Hydraulics & Pneumatics - Hydraulics & Pneumatics is the leading international technical resource for fluid power http://hydraulicspneumatics.com/rss.xml en A BIG Troubleshooting Secret: Principles Before Methods http://hydraulicspneumatics.com/blog/big-troubleshooting-secret-principles-methods <div class="node-body blog-body"><p>Ralph Waldo Emerson once said:<br /> <br /> <em>&quot;As to methods there may be a million and then some, but principles are few. The man who grasps principles can successfully select his own methods. The man who tries methods, ignoring principles, is sure to have trouble.&quot;</em><br /> <br /> It&#39;s a pretty astute observation from a poet. That principles are far more important--and powerful, than methods. And when you consider that a lot of troubleshooting is conducted by trial of method, while principles are ignored, it&#39;s not too surprising that the path is often long and torturous, with missteps along the way.<br /> <br /> This story from Simon Aguis, a <a href="http://www.hydraulicsupermarket.com/pro-club.html">Hydraulics Pro Club</a> member from Malta, is a good illustration of what happens when principles are ignored, and when they are followed:<br /> <br /> &quot;My 12 year old son and I have been involved in karting for the last 14 months, mostly as enthusiasts, just racing for pleasure on Sunday mornings.<br /> <br /> About a month ago, a guy at the track experienced starting and sudden stopping issues on his kid&#39;s 2-stroke kart engine. It seemed that no one could locate the cause of this intermittent problem. It had been persisting for 3 consecutive weekends and even those known at the track as the &#39;Professionals&#39; in the field could not solve it. Electronic ignitions, the coil, and all sorts of other possibilities were offered up as the cause.<br /> <br /> After several attempts resulted in a fail, I got the opportunity to troubleshoot the problem. Since I&#39;m a novice in this field, and even though this wasn&#39;t a hydraulics problem, I decided to follow <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=thth"><strong>The Hydraulic Troubleshooting Handbook</strong></a>, step by step.<br /> <br /> So first I applied Troubleshooting Principle (TP) #3, Check the Easy Things First. Logically, the easiest thing to check was the spark. So I asked if this had been done and was assured that the spark was OK, that several spark plugs had been tried, and that it would be useless to check it again.<br /> <br /> So I moved on to apply TP#5, Never Take Anybody Else&#39;s Word For It, in conjunction with TP#4, Make Sure You Do Actually Check It. After removing the spark plug and cranking the engine, spark resulted OK but it didn&#39;t glow as it should. So I checked for any defective earth connections, and they were all good.<br /> <br /> The next logical and easy thing to check was the spark plug cap. A deep look inside the cap with a torch, where the brass connector sits, showed a partial breakdown issue. I asked for any spare, but none was available. So I connected the high tension lead to the spark plug directly with the aid of a piece of tape. Started the kart and off it went. After several laps around the track it was clear the problem was solved.<br /> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;<br /> It was unbelievable to me that a simple spark plug cap issue, that no one had managed to locate, was the culprit. But thanks to your <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=thth">Troubleshooting Handbook</a> I now stand &#39;10 feet tall&#39; in the pits and am the go-to guy when problems arise.<br /> <br /> Which means I now have a different problem - of limited karting attention time for my son, something for which I don&#39;t think you can help. Other than to follow TP#10, Backing Out, and return <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=thth"><strong>The Hydraulic Troubleshooting Handbook</strong></a> to sender. No way, FORGET IT mate, that&#39;s mine!&quot;<br /> <br /> Like Emerson said, there&#39;s probably a million troubleshooting methods. So if you insist on troubleshooting by method, without proper attention to the underlying principles, you&#39;re going to have a rough time.<br /> <br /> <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=thth"><strong>The Hydraulic Troubleshooting Handbook</strong></a> outlines just 12 PRINCIPLES. And as the above story proves, nearly all of them apply when troubleshooting ANY system. Doesn&#39;t matter whether it&#39;s hydraulic, pneumatic, mechanical, electronic or even biological. The methods may vary, sure. But the troubleshooting <strong>principles</strong> are the SAME.<br /> <br /> <strong>Bottom line</strong>: troubleshooting by method while ignoring principles can result in costly mistakes. And to discover six other costly mistakes you want to be sure to avoid with your hydraulic equipment, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</strong></a>.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/big-troubleshooting-secret-principles-methods#comments Hydraulics At Work Tue, 21 Apr 2015 00:33:00 +0000 32151 at http://hydraulicspneumatics.com First Annual Michigan NFPA Fluid Power Challenge is a Success http://hydraulicspneumatics.com/news/first-annual-michigan-nfpa-fluid-power-challenge-success <div class="field-byline"> Cathy Meyer, Master Pneumatic </div> <div class="node-body article-body"><p>On March 26<sup>th</sup> the NFPA, Macomb Community College, Master Pneumatic and many other sponsors hosted 163 middle school students at the first annual Michigan Fluid Power Challenge. The Challenge began 6 weeks ago with a Workshop Day where teams&nbsp; learned some basics of fluid power by constructing from balsa wood, cardboard and syringes a pneumatic lifter mechanism.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/getting-hands-experience-nfpa-fluid-power-challenge#slide-0-field_images-32131 ">Getting Hands-On Experience at the NFPA Fluid Power Challenge</a></p> <p><a href="http://hydraulicspneumatics.com/blog/8th-grade-students-have-fun-nfpa-fluid-power-challenge">8th Grade Students have Fun with NFPA Fluid Power Challenge</a></p> <p><a href="http://hydraulicspneumatics.com/blog/learn-playing-fischertechnik-pneumatic-kits">Learn by Playing with Fischertechnik Pneumatic Kits</a></p> </div> <p>During the next six weeks they worked in the classroom to build two more mechanisms, a rotator and a clamp, then designed their own fluid power device to prototype. Teams came together again on Challenge Day to reconstruct their prototype and compete in a timed event to pick up a weighted object placing it into a destination area. The teams were scored in a number of areas including portfolios with drawings, design, teamwork and total points.</p> <p>This first event was an enormous success. Teachers commented on the appropriateness of the Fluid Power Challenge to their STEM requirements for the classroom. They asked to &ldquo;Sign us up for next year&rdquo;! The volunteers and judges were equally impressed also asking to be included next year.</p> <p>For further information or to hold your own event visit NFPA Fluid Power Challenge at:<a href="http://www.nfpafoundation.org/fpchallenge/index.aspx"><u>http://www.nfpafoundation.org/fpchallenge/index.aspx</u></a></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/first-annual-michigan-nfpa-fluid-power-challenge-success#comments News Mon, 20 Apr 2015 20:27:00 +0000 32141 at http://hydraulicspneumatics.com Getting Hands-On Experience at the NFPA Fluid Power Challenge http://hydraulicspneumatics.com/news/getting-hands-experience-nfpa-fluid-power-challenge <div class="field-byline"> Staff </div> <div class="node-body gallery-body"><p>On March 26<sup>th</sup> the NFPA, Macomb Community College, Master Pneumatic and many other sponsors hosted 163 middle school students at the first annual <a href="http://hydraulicspneumatics.com/news/first-annual-michigan-nfpa-fluid-power-challenge-success">Michigan Fluid Power Challenge</a>. The Challenge began 6 weeks ago with a Workshop Day where teams&nbsp; learned some basics of fluid power by constructing from balsa wood, cardboard and syringes a pneumatic lifter mechanism.</p> <p>For further information or to hold your own event visit <a href="http://www.nfpafoundation.org/fpchallenge/index.aspx" target="_blank">NFPA Fluid Power Challenge</a>.</p> <p>&nbsp;</p> </div> <div class="field-interstitial-ads-frequency"> <span>Interstitial Ads Frequency:&nbsp;</span> -1 </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/getting-hands-experience-nfpa-fluid-power-challenge#comments News Mon, 20 Apr 2015 17:11:00 +0000 32131 at http://hydraulicspneumatics.com New Flint Hydraulics Website Provides Easy Navigation for Users http://hydraulicspneumatics.com/news/new-flint-hydraulics-website-provides-easy-navigation-users <div class="node-body article-body"><p>Flint Hydraulics, Inc., distributer of original and replacement hydraulic pumps, motors, valves and other parts, announces the launch of its new website, <a href="http://www.flinthyd.com/"><u>www.flinthyd.com</u></a>, with a modern design and streamlined navigation.</p> <p>With a database of more than 30,000 hydraulic units and parts, the site provides clear pictures in a customer-oriented format. From the homepage, customers can choose their application, whether it be heavy industrial equipment, distribution and repair facilities, or hydraulic engineering and designing. This organization makes it easy for users to find the right information and products for their application. The homepage also features links to request a quote or contact the company, and drop-down menus for more in-depth information about Flint Hydraulics and its broad range of products.</p> <p>Flint Hydraulics provides all users with both mobile and desktop versions of the site, without any loss of content or function. Steve Latza, Chief Operating Officer for Flint Hydraulics guarantees that the site will accommodate the needs of all customers, with information &ldquo;literally at their fingertips when they need it, whether they are a large corporation or a small town shop.&rdquo;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/new-flint-hydraulics-website-provides-easy-navigation-users#comments News Mon, 20 Apr 2015 16:48:00 +0000 32121 at http://hydraulicspneumatics.com Hydraulics? What’s Your Pleasure? http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulics-what-s-your-pleasure <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/alan.jpg" style="width: 130px; height: 150px; float: left;" title="Alan Hitchcox, Editor, Hydraulics &amp; Pneumatics" />What machine would you say most exemplifies the benefits of hydraulics? Hydraulics is probably best known for its raw power, so maybe it would be a shredder machine. These monsters can chew up anything you throw at them within seconds&mdash;refrigerators, heavy-equipment tires, hardened-steel frames, you name it.</p> <p>How about a bucket-wheel excavator? Talk about power, these machines can excavate more than 10,000 yards of earth per hour. Drive one of these behemoths down your street, and you&rsquo;ll leave 20-ft wide swath 8 ft deep.</p> <p>Then again, I&rsquo;ve favored tunnel boring machines ever since I first learned about them. Tunnel boring machines can chew holes more than 22 ft in diameter through mountains, under lakes and rivers, and deep underground.</p> <p>But, today, I think I&rsquo;ll choose a conveyor. Conveyors can be extremely powerful, but you generally don&rsquo;t associate them with hydraulics. Most conveyors are powered by an electric motor, a chain or belt drive, and a gearbox to reduce speed and increase torque. That&rsquo;s the nature of electric motors&mdash;they rotate at high speed, and they&rsquo;re big and heavy.</p> <p>Hydraulic motors, on the other hand, are a fraction of the size and weight of an electric motor of equivalent power rating. Hydraulic motors can also transmit low-speed, high-torque power without using chain, belt, and gear drives. These are all clear benefits for hydraulics, but what puts hydraulic motors over the top in conveyors is that they can take up almost zero space.</p> <p>Our cover story describes conveyors inside the Northern Eagle, a giant fishing boat that transforms tons of fresh-caught fish into tons of frozen fillets. The Northern Eagle can process more than 50,000 fish per hour and relies on hundreds of feet of conveyors in cramped quarters below deck that undergo frequent washdown&mdash;not a hospitable environment for electric motors and speed reduction drives.</p> <p>Hydraulic motors, on the other hand, are located completely inside the head pulleys of conveyors. This means the head pulleys have no external drives, so they are essentially the same size as the conveyors&rsquo; idler pulleys. In fact, if it wasn&rsquo;t for the pair of hydraulic hoses connected to the pulleys, you&rsquo;d probably be hard pressed to see what powers the conveyors.</p> <p>Read more about this impressive boat and the motorized pulleys in &ldquo;<a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/floating-fish-factory" target="_blank">A Floating Fish Factory</a>.&rdquo;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulics-what-s-your-pleasure#comments Marine & Offshore Hydraulic Pumps & Motors Fri, 17 Apr 2015 20:16:00 +0000 32101 at http://hydraulicspneumatics.com New Catalog Covers Vehicle Air Valves, Controls http://hydraulicspneumatics.com/pneumatic-valves/new-catalog-covers-vehicle-air-valves-controls <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/DEL-Hydraulics.jpg" style="width: 350px; height: 444px; float: left;" /></p> <p>DEL Hydraulics, Buffalo, N.Y., recently released a 28-page catalog describing pneumatic components for controlling hoists, power takeoffs, dump pumps, plows, and other functions on work trucks. The components can be used for direct control of pneumatic functions or air-pilot control of hydraulic valves.</p> <p>Highlighted products include stackable directional valves with feathering control in both directions; a PTO Saver Valve that automatically disengages a vehicle&rsquo;s PTO when spring parking brakes are released; bankable 4-way metering valves with LED backlit control knobs for easy function identification in the dark; and pneumatic feathering joysticks with 360&deg; operation.</p> <p>The publication also provides installation instructions, drawings, and descriptive photos, in addition to descriptions of assembly combinations and accessories. For more information, call (716) 853-7996 or visit <a href="http://www.edl.us.com" target="_blank">www.edl.us.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/pneumatic-valves/new-catalog-covers-vehicle-air-valves-controls#comments Controls & Instrumentation Rail, Truck & Bus Pneumatic Valves Fri, 17 Apr 2015 19:42:00 +0000 32091 at http://hydraulicspneumatics.com More Hydraulic Hybrids on the Horizon http://hydraulicspneumatics.com/rail-truck-bus/more-hydraulic-hybrids-horizon <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/more-hydraulic-hybrids-horizon">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Lightning Hybrids, developer and manufacturer of hydraulic hybrid systems for medium- and heavy-duty trucks and buses, announced an agreement with Kiessling Transit to supply 35 hydraulic hybrid systems. The sale marks Lightning Hybrids&rsquo; largest order to date. Lightning Hybrids&rsquo; system has shown improvements of 30% in fuel efficiency and significantly reduced nitrogen-oxide (NOx) emissions during a year-long pilot program with Kiessling Transit Inc., Norfolk, Mass.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-drives-move">Hydraulic Drives on the Move</a></p> <p><a href=" http://hydraulicspneumatics.com/news/forklift-trucks-reap-benefits-hybrid-hydraulics">Forklift Trucks Reap Benefits of Hybrid Hydraulics</a></p> <p><a href=" http:/hydraulicspneumatics.com/waste-management/ohio-town-welcomes-first-hydraulic-hybrid-garbage-trucks">Ohio Town Welcomes First Hydraulic Hybrid Garbage Trucks</a></p> </div> <p>Kiessling&rsquo;s fleet of new 2015 and 2016 Ford E450 chassis and Elkhart Coach bodies will incorporate the Lightning Hybrids parallel hybrid system installed prior to delivery this summer. The technology applies a hydraulic system to the driveline of a vehicle to regenerate braking energy. Hydraulic pumps and a lightweight accumulator store braking energy and use the stored energy to power the wheels. &nbsp;Application of this technology will result in improved emissions, less fuel use, longer brake life, better low-end torque, and lower maintenance and operational costs.</p> <p>&ldquo;This partnership with Kiessling Transit is a significant milestone for Lightning Hybrids, and a testament to the success and benefits of our system in providing a cost-effective and elegant solution for large fleets,&rdquo; said Tim Reeser, president and co-founder of Lightning Hybrids. &ldquo;Kiessling Transit is an innovative, early adopter and was one of the first customers to trial our technology for over a year. Their positive experience and attractive results during the pilot program lead to this substantial follow-on order. This program will demonstrate that it&rsquo;s possible today to make existing fleet vehicles significantly cleaner and more efficient with a high-tech, computer-controlled system built on proven and sustainable hydraulic technology.&rdquo;</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Kiessling-bus-picture.jpg" style="width: 595px; height: 354px;" title="More than 35 new transport vans will hit the road later this year, using hybrid hydraulic drives to cut fuel consumption and emissions up to 30%, as well as extend brake life and reduce maintenance costs. " /></p> <p><strong>Technology behind the benefits</strong></p> <p>The Lightning Hybrids system does not use any batteries. Instead, it safely and efficiently stores energy mechanically in composite hydraulic accumulators, which are a fraction of the cost and weight of batteries. The system can be installed on new vehicles or retrofitted on vehicles already in service.</p> <p>Reeser explained, &ldquo;Hydraulic hybrids, like all hybrid drivetrains, use regenerative braking, which saves energy from stopping the vehicle and uses it to move the vehicle forward. So a start-stop drive cycle is necessary to see gains from using a hybrid. For the Lighting Hybrids hydraulic system the &lsquo;sweet spot&rsquo; in terms of efficiency is six to eight stops a mile, whether planned or due to traffic. This gives enough speed between each stop to save enough energy to accelerate the vehicle to the next stop.&rdquo;</p> <p><strong>Launching the hybrid fleet </strong></p> <p>Kiessling Transit purchased a pilot vehicle equipped with the hybrid system through Lightning Hybrids&rsquo; Boston-based dealer, National Fleet Hybrids, in 2013. The pilot vehicle&rsquo;s fuel consumption was closely monitored during the pilot program. The results, logged through Lightning Hybrids&rsquo; telematics systems and confirmed through Kiessling&rsquo;s fuel logs, revealed a significant improvement in fuel economy and emissions. Driver feedback also confirmed vehicle performance benefits. Kiessling Transit will use the hybrid vehicles to transport primarily urban- area residents with disabilities.</p> <p>Kiessling Transit Inc has been providing special needs transportation to the Massachusetts community since 1970. The company currently contracts with regional transit authorities, state agencies, and local municipalities to transport passengers throughout Massachusetts. Daily trips to and from residences, work sites, schools, medical appointments, and social events are provided for ambulatory and non-ambulatory customers with a wide range of disabilities.</p> <p>When put in service, the buses will provide an immediate positive impact on the environment due to the reduced emissions of the system. For example, vehicles with Lightning Hybrids&rsquo; technology produce half of the NOx emissions and 30% less CO<sub>2</sub> emissions than vehicles without the company&rsquo;s system. In addition to these emissions reductions, the Kiessling fleet will benefit from decreased fuel use, longer brake life, better low-end torque, and lower maintenance and operational costs.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/more-hydraulic-hybrids-horizon">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>&ldquo;We are pleased with the results of the pilot program, which proved a fuel economy gain of around 30% all year, and we look forward to seeing the positive results continue on a much larger scale,&rdquo; said Roger Kiessling, chief operations officer, Kiessling Transit. &ldquo;Our company is focused on providing the most efficient, reliable, environmentally friendly transportation to the areas we serve, and the Lightning Hybrids system supports this goal.&rdquo;</p> <p>For more information, visit Lightning Hybrids at <a href="http://www.lightninghybrids.com" target="_blank">www.lightninghybrids.com</a>, or Kiessling Transport&rsquo;s website at <a href="http://www.kiesslingtransit.com" target="_blank">www.kiesslingtransit.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/rail-truck-bus/more-hydraulic-hybrids-horizon#comments Accumulators Rail, Truck & Bus Fri, 17 Apr 2015 19:00:00 +0000 32071 at http://hydraulicspneumatics.com Troubleshooting Challenge: Elephant House Doors Open on Their Own http://hydraulicspneumatics.com/maintenance/troubleshooting-challenge-elephant-house-doors-open-their-own <div class="node-body article-body"><p>St. Louis Zoo officials asked <a href="http://valtechydraulics.com/" target="_blank">Valtec Hydraulics Inc.</a>, St. Louis, to design a preventive maintenance program for hydraulic system in the zoo&rsquo;s elephant house. The Zoo did not have an accurate schematic after changes had been made to the hydraulic system over the years. The existing schematic showed flow-control valves in the lines to and from a cylinder, but the valves had been replaced with Sun counterbalance valves. Directional-control valves were shown as blocked center, three-position valves, but had been replaced with motor spools &mdash; A and B to tank with P-blocked valves.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-keeps-losing-its-prime">Troubleshooting Challenge: Pump Keeps Losing Its Prime</a></p> <p><a href=" http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-housing-cracking">Troubleshooting Challenge: Pump-housing Cracking</a></p> <p><a href=" http://hydraulicspneumatics.com/cylinders-actuators/troubleshooting-challenge-speed-control-causing-unwanted-jolt-and-pressure-spike">Troubleshooting Challenge: Speed Control Causing Unwanted Jolt and Pressure Spike</a></p> </div> <p>Several control stations in different locations were also added over the years. In some areas, shuttle valves in the A and B cylinder lines were installed to let multiple valves control the same cylinder. Several manifolds were also added&mdash;from a single sub-plate to eight bank units. A second hydraulic power unit was installed the previous year and tied into the central system. The power units could all be isolated with shutoff valves.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/2015.04-Troubleshooting.png" style="width: 595px; height: 692px;" /></p> <p>More than 36 cylinder/valve/gate assemblies were plumbed using 1-in. stainless steel tubing. Most of the tubing was elevated overhead. The system also had five inline pressure filters and one return filter. The entire hydraulic system contains nearly 1,000 gal of fluid &mdash; in this case, a 10-weight vegetable base hydraulic fluid.</p> <p>A problem occurred after Valtec changed all five pressure filters during normal scheduled service. A mechanic ran one door at the end of the circuit to bleed air from the pressure line. Everything seemed to run fine, so the maintenance team packed up and left.</p> <p>An elephant trainer later went to open three doors at roughly the same time. The entire barn came alive. After studying a video, they saw eight hydraulic functions moving on their own. Some doors opened and some closed, and an elephant restraining device had lifted up. The cylinders seemed to move at random. Luckily, no one was injured. Valtec&rsquo;s technicians believed air caused a pressure surge in the return line, which had a straight path to each cylinder.</p> <p>Valtec believed they had stumbled onto a problem that existed for a long time and needed to be resolved. They were told, &ldquo;We don&rsquo;t want elephants roaming the building without our knowledge.&rdquo;</p> <p>Any idea what caused the problem and what was done to fix it?</p> <p><strong>Find the Solution</strong></p> <p>Think you know the answer to this month&rsquo;s problem?</p> <p>Submit your solution by emailing Mindy Timmer at <a href="mailto:timmer@cfc-solar.com">timmer@cfc-solar.com</a>. All correct solutions submitted by May 1, 2015, will be entered into a random drawing for a $50 gift card. The winner will be notified, and his or her name will be printed in a future issue. Only one gift card will be awarded to any participant within a calendar year.</p> <p><strong>Solution to Last Month&#39;s Problem:</strong></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-keeps-losing-its-prime" target="_blank"><em>Pump keeps losing its prime</em></a></p> <p>The first problem was installing the flapper-type check valve in an intake line to resolve the air entry problem. The second obvious problem was the failure caused by the system pressure causing the pump to rotate in the opposite direction pressurizing the intake line. I found that disconnecting the air bleed valve and capping the lines solved to problem.</p> <p>When I took over managing a large HPU fabrication shop years ago, customers complained about this same problem on several of our new units. I found our assembly mechanics thought an air bleed valve did not need to return below the fluid level. The trouble is, an air bleed valve is normally open until oil passes through it, causing it to close and stay closed as long as system pressure is present.&nbsp; When all pressure is lost, the valve can open to atmosphere, which allows air to enter the system. The result is loss of prime.</p> <p>We called the supplier, and he assured us the HPU had a standpipe. We used a mirror to look down the removed filler-breather hole and determined it had come loose, allowing air to enter the system.&nbsp;</p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/maintenance/troubleshooting-challenge-elephant-house-doors-open-their-own#comments Maintenance Entertainment Cylinders & Actuators Hydraulic Valves Fri, 17 Apr 2015 18:10:00 +0000 32061 at http://hydraulicspneumatics.com Hydraulic Fluids Meet Tighter Requirements for Marine Vessels http://hydraulicspneumatics.com/hydraulic-fluids/hydraulic-fluids-meet-tighter-requirements-marine-vessels <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Main-pic.gif" style="width: 595px; height: 393px;" /></p> <p>The new EPA Vessel General Permit (VGP) requires lubricants to be environmentally acceptable should leaks, spills or other discharges occur. To serve these requirements, Chevron Products Co., San Ramon, Calif., recently introduced Clarity Synthetic EA (environmentally acceptable) hydraulic and gear oils, which provide lubrication and thermodynamic properties and seal compatibility for hydraulic equipment and industrial gearing.</p> <p>Clarity oils are high viscosity index (VI) synthetic lubricants that help address ISO 15380 HEPR, DIN, Denison and Eaton-Vickers recommendations for hydraulic systems. Chevron offers three grades of Clarity synthetic EA hydraulic oils: ISO 46, ISO 68, and ISO 100. The ISO 68 and 100 grades are recommended for marine stern tube usage.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Inset-pic.gif" style="width: 595px; height: 482px;" title="Chevron introduced three grades of Clarity synthetic environmentally acceptable hydraulic fluids to meet EPA mandates for hydraulic and other fluids used under a vessel’s water line." /></p> <p>Typical applications include stern tubes, thrusters, controllable pitch propellers, stabilizers, rudder bearings, and other mechanical equipment subject to immersion. These products may be used in other hydraulic and gear applications requiring high performance lubricants. The oils&rsquo; high viscosity index provides stable viscosity over a wide range of temperatures.</p> <p>&nbsp;&ldquo;Environmental compliance is a major concern for companies in the marine, agriculture, and construction markets,&rdquo; commented Jim Gambill, Chevron&rsquo;s Manager&mdash;Americas Marketing. &ldquo;The goal is to meet these regulatory and environmental requirements without sacrificing equipment durability. Clarity Synthetic EA hydraulic and gear oils biodegrade by more than 60% within 28 days.&rdquo;</p> <p><strong>Vessel General Permit scope</strong></p> <p>Under the revised VGP, all vessels entering or operating in U.S. waters must use EA lubricants in all oil-to-sea interfaces. This includes any application that is under the vessel&rsquo;s water line, plus applications such as mooring lines where lubricants may be exposed over water. A lubricant is characterized as an EA lubricant if it meets applicable criteria for biodegradability, toxicity to aquatic organisms and is not bioaccumulative.</p> <p>For information on Clarity hydraulic fluids, visit <a href="http://www.chevronlubricants.com" target="_blank">www.chevronlubricants.com</a> and enter clarity into the search box.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-fluids/hydraulic-fluids-meet-tighter-requirements-marine-vessels#comments Marine & Offshore Hydraulic Fluids Fri, 17 Apr 2015 16:37:00 +0000 32051 at http://hydraulicspneumatics.com Check Fluid Temperature…From Your Smartphone http://hydraulicspneumatics.com/hydraulic-fluids/check-fluid-temperature-your-smartphone <div class="node-body article-body"><p>Hydraulic technicians today are more safety-conscious than ever. Don&rsquo;t use your hands to seek out fluid leaks, and don&rsquo;t touch pipes or tubing to see if they&rsquo;re hot. Hot hydraulic lines can be evidence of something wrong in a system. Most portable diagnostic instruments contain thermometers, but an even more portable and quicker way to obtain temperature readings may be the latest addition to Parker Hannifin&rsquo;s SensoNODE family of wireless diagnostic products.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/SensoNODE-Clamp.gif" style="width: 595px; height: 372px;" title="Parker’s SensoNODE clamp doesn’t just provide a quick and convenient way to take the temperature of your hydraulic system, it can record high and low values and other historical data over time in conjunction with your wireless device and the SensoNODE mobile app." /></p> <p>Parker&rsquo;s Quick Coupling div., Minneapolis, recently introduced a temperature-sensing clamp. About 5&frac14;-in. long by 3-in. wide, the nylon clamp quickly attaches to pipe or tubing tubing. Once the clamp is n place, two stainless steel pads contact the conduit, and the clamp&rsquo;s blue-capped sensor uses Bluetooth Smart1 technology to transmit temperature readings directly to mobile device. No wiring or external power supply is needed because the sensor operates on a CR2450 battery and is engineered for extended battery life. A button on the clamp handle turns the sensor on and off, and an LED indicates its status.</p> <p><em><strong>Check out a video on the SensoNODE&nbsp;Wireless Sensors, courtesy of Engineering TV, below:</strong></em></p> <p><iframe frameborder="0" height="366" scrolling="no" src="http://www.engineeringtv.com/video/SensoNODE-Low-Energy-Wireless-M/player?layout=&amp;read_more=1" width="595"></iframe></p> <p>The sensor reads temperatures from -40&deg; to 257&deg;F with &plusmn;5.0% accuracy, a resolution of 2&deg;F, and with a scan-and-transmit rate of 2 sec. Users can define measurement units in &deg;C or &deg;F and define alert thresholds.</p> <p>A SensoNODE Mobile app can be downloaded for free from Apple&rsquo;s App Store for mobile devices with iOS 7 or later. The app&rsquo;s familiar navigation with pinch-and-zoom functionality provides real-time information, including current values, minimum/maximum indicators, and historical sensor information. An auto-recognition feature lets users quickly locate and connect as many as five sensors at the same time.</p> <p>For more information, call (763) 544-7781, or visit <a href="http://solutions.parker.com/wirelessmonitoring" target="_blank">http://solutions.parker.com/wirelessmonitoring</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-fluids/check-fluid-temperature-your-smartphone#comments Controls & Instrumentation Hydraulic Fluids Fri, 17 Apr 2015 15:58:00 +0000 32041 at http://hydraulicspneumatics.com Bluetooth Comes to Cartridge Valves http://hydraulicspneumatics.com/hydraulic-valves/bluetooth-comes-cartridge-valves <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Sun-valve_0.jpg" style="width: 115px; height: 335px; float: left;" title="Wireless technology from Sun Hydraulics lets users setup and calibrate the company’s proportional cartridge valves without wires by using only on a phone already in your pocket. " />Sun Hydraulics Corp. introduced a new way to configure embedded amplifiers without using a PC or wired connections. The new version of Sun&rsquo;s Embedded Amplifier series can be configured via an iOS or Android app using Bluetooth for quick, easy, reliable wireless calibration.</p> <p>&ldquo;This Bluetooth embedded amplifier represents a major advance in the fluid power industry,&rdquo; said Allen Carlson, President and CEO at Sun Hydraulics, Sarasota, Fla. &ldquo;Wireless configuration from a smart device maintains noise-emission compliance and is going to find its way into a broad range of applications where cost, reliability, and ease of use are critical.&rdquo;</p> <p>This development in cartridge valves means that technicians can now be in within 30 ft of as machine to observe its operation but remain untethered&mdash;and, therefore, safe&mdash;when setting up and calibrating machine operation. Setup is via a Sun Hydraulics app, AmpSet Blue, designed for the iOS and Android operating systems and available for free from Apple&rsquo;s App Store and for Android from Sun&rsquo;s website.</p> <p>AmpSet Blue lets users locate and pair with the selected amplifier using their smart device and adjust all parameters of the proportional controller through several simple screens. &nbsp;Users can name each device and save, store, recall, and share settings for future use.</p> <p>Configuring without wires means relying only on a phone that&rsquo;s already in your pocket. The technology should prove especially beneficial for multi-valve systems and hard-to-reach or dangerous environments, where the app can pair with the Bluetooth embedded amplifier from as far away as 30 ft away. It eliminates the need to carry a separate programmer or laptop and special cables into a hazardous environment.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Sun-phone.gif" style="width: 595px; height: 648px;" title="The AmpSet Blue app for iOS and Android phones lets users configure proportional cartridge valves from Sun Hydraulics. The free app can be download for iOS from Apple’s App store or from Androir from sun’s website." /></p> <p>Password protection prevents unauthorized access to the amplifiers. Added safety os provided by a &ldquo;connection time-out&rdquo; feature, which is activated by a period of non-use to prevent the user from leaving the application open and paired.</p> <p>The controller is CE and RoHS compliant, sealed to IP69K, encapsulated for harsh environmental usage, and has enhanced diagnostic LEDs that give real-time operational status.</p> <p>For more information, call (941) 362-1200 or visit <a href="http://www.sunhydraulics.com/bluetooth" target="_blank">www.sunhydraulics.com/bluetooth</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-valves/bluetooth-comes-cartridge-valves#comments Hydraulic Valves Fri, 17 Apr 2015 15:08:00 +0000 32031 at http://hydraulicspneumatics.com Hydraulics Zips Along Golden Gate Bridge http://hydraulicspneumatics.com/construction/hydraulics-zips-along-golden-gate-bridge <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/GGB-Lookout%20Park.jpg" style="width: 350px; height: 196px; float: right; margin-left: 4px; margin-right: 4px;" />The <a href="http://goldengatebridge.org/" target="_blank">Golden Gate Bridg</a>e is one of the great icons of America, but rush-hour traffic has been a nightmare for decades. Officials have wrestled with many different potential solutions to traffic congestion, but none were implemented because Northern Californians are unwilling to see the beauty of their historic landmark desecrated. Even if a solution could be agreed upon, costs would likely be prohibitively expensive. Another concern has been safety. Previous barriers&nbsp; occasionally were less effective at separating opposing lanes than conventional concrete barriers are. But conventional barriers take up substantial space, which would restrict traffic flow even more.</p> <p>That all changed earlier this year. Officials installed a continuous median of high-density concrete barriers to separate northbound traffic some southbound. That sounds pretty simple, but what makes this solution so innovative is that the barriers are shifted laterally about 11 ft to increase the number of inbound or outbound lanes during&nbsp; morning and afternoon rush hours.</p> <h3><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/920x920R.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/920x920R.jpg" style="width: 300px; height: 207px; float: left; margin-left: 4px; margin-right: 4px;" title="The Road Zipper gently repositions median barriers to improve traffic flow and safety. Click on image for larger view." /></a>Smooth moves</h3> <p>The 11,500-ft median is composed of 3,500 individual barriers linked together through steel hinges at each end and have a molded-in T flange at the top. Each barrier unit weighs 1,500 lb and is tested to withstand impact equivalent to a 4,400-lb truck moving at 62-mph. The key element, though, is a bus-sized vehicle called the Road Zipper. Manufactured by Barrier Systems Inc., the Road Zipper straddles the median as it travels from one end of the bridge to the other and repositions the barriers laterally the width of one lane. (Barrier systems also makes Road Zippers that can move barriers laterally two lanes&mdash;up to 254 ft&mdash;in a single pass)</p> <p>As the road Zipper travels over the median, a series of rollers move under each barrier, lift it, move it laterally, then gently set it back down. From afar, the motion looks a lot like a zipper in action. From above, the left side of the vehicle drives over the line of barriers, which emerge from the back of the vehicle on the right side.&nbsp; The result is less congested and safer rush-hour traffic.</p> <p><em><a href="https://www.youtube.com/watch?v=qVDj9XZlWuY" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Screen%20Shot%202015-04-17%20at%204.10.35%20PM.png" style="width: 222px; height: 125px; float: right; margin-left: 4px; margin-right: 4px;" title="Click on the image to watch a short video of the Road Zipper in action." /></a></em>Heavy loads, precise positioning, and unpredictable conditions are the norm, so hydraulics is intimately involved in the operation of the Road Zipper. Powered by a 112-kW diesel engine&nbsp; driving a closed-loop hydrostatic transmission (HST), the Road Zipper is 15.1-m long, 4.42-m wide, and weighs 19,300 kg. Two-wheel drive is standard, with four-wheel drive optional. The HST produces a top speed of 32 km/hr in its high range, but normally runs at 0.6 to 0.8 km/hr when working.</p> <p>Hydraulics for work functions is powered by a pressure-compensated piston pump capable of delivering up to 72 lpm of fluid at pressure to 172 bar. Work functions include cylinders for elevation and side-positioning control of the barrier movement sections. The pump also supplies power steering for all four wheels, when needed. The Road Zipper has a 22.8-m turning turning radius with front-wheel steer. When tight maneuvering is needed, though, it can be shifted to 4-wheel steer, which cuts the turning radius to only 11.4 m.</p> <h3><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/920x920-1.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/920x920-1.jpg" style="width: 300px; height: 421px; margin-left: 4px; margin-right: 4px; float: left;" title="A hydraulic capstan drive helps keep barriers evenly spaced, despite hils and curves, which tend to space barriers too close together or too far apart." /></a>Capstan counteracts gravity</h3> <p>During the normal operation, gravity can cause the barriers to migrate backward or forward from inclines and declines in the road surface. For example, barriers will tend to migrate down a hill or resist angular repositioning around a curve. This movement results from gravity and rolling resistance within the machine as the barrier passes through the series of rollers. Spring forces in the hinge assemblies between each barrier can also contribute for positioning error.</p> <p>A capstan drive works to counteract these tendencies. The capstan drive consists of a hydraulic motor, two pumps, two rubber capstan wheels mounted under the machine, and controls. Without the capstan drive, barriers would tend to be spaced too far apart on hills and curves and too close together in valleys and curves. The result would be excessive tensile or compressive stress on the hinges. The capstan compensates&nbsp; for irregularities to maintain the wall in a neutral, stable position.</p> <p><em>The Road Zipper and Road Zipper System (which includes the interlocked median barriers) are manufactured by Barrier Systems Corp., a d division of Lindsay Transportation Solutions, Rio Vista, Calif. For more information, visit <strong><a href="http://www.barriersystemsinc.com" target="_blank">www.barriersystemsinc.com</a></strong>.</em></p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/construction/hydraulics-zips-along-golden-gate-bridge#comments Construction News Fri, 17 Apr 2015 14:18:00 +0000 32021 at http://hydraulicspneumatics.com Big Rigs Walk the Walk http://hydraulicspneumatics.com/marine-offshore/big-rigs-walk-walk <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/big-rigs-walk-walk-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Conventional land-based drilling rigs comprise up to 40 trucks of equipment. Costs can reach $950,000 to take down and set up again in a different location (slot) no matter how close it is. When several wells must to be drilled close by each other, the cost per well can be cut dramatically by moving the drilling rig from slot to slot. Walking rigs were developed for this reason. They can move up to 150 ft at up to 100 ft/hr, rotated, and located over a series of wells as required.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Rota-Engrg-Lead.gif" style="width: 595px; height: 446px;" title="A series of hydraulic rams lifts and moves land-based rigs from one location to another, saving time and money over dismantling and reinstalling each rig." /></p> <p>Walking rigs lift the drilling section of the rig and make it mobile. Weighing up to 500,000 lb, and fully laden with racked drill pipe, the rig&rsquo;s movement has to be carefully monitored and controlled. With sometimes as many as 14 hydraulic cylinders controlling different aspects of the movement, the cylinders&rsquo; electronic feedback control system leaves no room for compromise. The cylinders used in the rigs are actually rams&mdash;the rod diameter is the same as the piston diameter. By their design, rams are single acting, so fluid pressure extends the cylinder&rsquo;s rod, and weight of the rig retracts it.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/200/TechZone/Cylinders/Article/False/86048/TechZone-Cylinders">Moving millions with hydraulics</a></p> <p><a href=" http://hydraulicspneumatics.com/controls-amp-instrumentation/linear-displacement-transducer-isn-t-limited-stroke">Linear displacement transducer isn&rsquo;t limited by stroke </a></p> <p><a href=" http://hydraulicspneumatics.com/news/networking-learning-and-sharing-opportunities-abound-offshore-technology-conference">Networking, Learning, and Sharing Opportunities Abound at the Offshore Technology Conference</a></p> </div> <p><strong>Standing tall and well balanced</strong></p> <p>Spindletop Production Tools, Gainesville, Texas, designs and builds walking rigs that are fully automatic, requiring no personnel on the rig as it moves. Using an electronic leveling system, the rig is kept level within 0.2 degrees when walking. A programmable logic controller reads an electronic level signal and automatically adjusts stroke of the rams. Position feedback from each ram is produced by linear displacement transducers (LDTs) designed and manufactured by <a href="http://www.rota-eng.com" target="_blank">Rota Engineering Ltd</a>. Rota Engineering also makes electrical cabling systems, which allow rapid connection and disconnection of the rig from ancillary services when the rig is to be walked.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Rota-Engrg-Closeup.gif" style="width: 595px; height: 446px;" title="This closeup view shows hydraulic rams mounted alongside jacks that lift rigs prior to moving them. Integral position transducers and level sensors keep the rigs within level 0.2 degrees." /></p> <p>Rota&rsquo;s LDTs give accurate and repeatable position feedback and can be fully imbedded in the rams, with just the electrical connection visible. All electronics are imbedded in the transducer within the ram. Stroke of the lifting rams is closely and continuously monitored to ensure safety by keeping the rig level. The rams stroke up to 9 ft moving at 4 ft/min, with typical pressures to 2,500 psi.</p> <p>Mark J. Flusche, P. E., petroleum engineer at Spindletop, explained, &ldquo;Because our rigs are fully automatic, alignment about the wellbore is critical. We use the Rota position sensors in the hydraulic cylinders to adjust the rig for settling during operations. The sensors allow us to make known precise adjustments.&rdquo;</p> <p>Because of the likelihood of explosive gases, the monitoring instruments must meet minimum requirements for a Zone 1 rating, where a hazardous atmosphere is likely in normal operation. Rota Engineering supplied intrinsically safe LDTs, which qualify for use in Zone 0, where a hazardous area is continuously present.</p> <p>In the drawing shown, a magnet is held and moved by a piston to produce a 4- to 20-mA signal indicative of the ram &lsquo;s stroke position. Rota&rsquo;s LDTs are absolute devices, so if the electrical supply to the transducer is interrupted, the sensor reads where the ram is the instant power returns, even if the ram had moved during the interruption.</p> <p>The sheer size of the machinery and the physical working conditions require sensors that are unaffected by vibration or shock. Rota sensors have been independently tested by Wylie Labs, subjecting the sensor to 111G sine dwell without failure. Flusche added, &ldquo;We prefer Rota sensors over others because the Rota sensors are far more robust and hold up well in the oilfield environment. Also, they are intrinsically safe and well shielded from noise caused by large ac motors and variable frequency drives.</p> <p><strong>Quick, reliable connections</strong></p> <p>Rapid access to the hydraulic ram and its mounting is accommodated by fitting the sensors with Rota&rsquo;s quick-acting electrical coupling. The coupling is constructed of 316 stainless steel and is designed with interlocks that prevent producing a spark during connection or disconnection. The connectors used are IP-68 rated and can be submerged to 328 ft for 1 hr without leaking. Even when open, they maintain an IP-67 rating.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Rota-Engrg-Cutaway.gif" style="width: 595px; height: 432px;" title="This cutaway view shows the compact Rota Engineering sensor installed in a hydraulic ram. The connector is sealed from the environment and prevents sparking while allowing quick coupling and decoupling." /></p> <p>Rota designed the entire interconnection system, from junction boxes to the quick-acting connectors. Designing the entire interconnection system means that only the correct connectors mate together, which maximizes speed and reliability when working on equipment. The systems are typically used in hazardous land-based and offshore equipment but can also benefit marine environments and other locations where sealing and isolation of electrical signals is critical.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/big-rigs-walk-walk-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Submitted by Domhnull McLennan, of Rota Engineering Ltd., Bury, England. For more information, contact Rota Engineering in the US at (260) 749-9631, go to <a href="http://www.rota-eng.com" target="_blank">www.rota-eng.com</a>, or visit them at the Offshore Technology Conference booth 2641.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/marine-offshore/big-rigs-walk-walk#comments Marine & Offshore Thu, 16 Apr 2015 20:47:00 +0000 32001 at http://hydraulicspneumatics.com Controllers Feature SD Card Data Logging http://hydraulicspneumatics.com/controls-instrumentation/controllers-feature-sd-card-data-logging <div class="field-byline"> Staff </div> <div class="node-body article-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Divelpiss-J1939_web.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Divelpiss-J1939_web.jpg" style="width: 222px; height: 295px; float: left; margin-left: 1px; margin-right: 1px;" /></a></p> <p><a href="http://www.divelbiss.com/Products/CatFamDetails.asp?ProdCatID=4&amp;ProdFamID=10" target="_blank">EZ Ladder Toolkit</a> and <a href="http://www.divelbiss.com/Products/CatFamDetails.asp?ProdCatID=2&amp;ProdFamID=1" target="_blank">P-Series PLC on a Chip</a>-based controllers now feature integrated J1939/NMEA2000 connectivity and SD card data logging. As a result, customizable J1939 and NMEA2000 messages, Parameter Group Numbers (PGNs), and Suspect Parameter Numbers (SPNs), make the devices suitable with Tier IV diesel engines or marine equipment. In addition to a user-selectable bit-rate, address claim functionality is now fully supported with a user-defined name field. Standard function blocks allow users to easily map specific SPN values to program variables. Data is easily logged to an SD card in either binary or ASCII format.</p> <p><strong><a href="http://www.divelbiss.com" target="_blank">Divelbiss Corp.</a></strong>, (800) 245-2327</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/controllers-feature-sd-card-data-logging#comments Products Controls & Instrumentation Thu, 16 Apr 2015 20:25:00 +0000 31991 at http://hydraulicspneumatics.com Bladder Accumulators Shed the Weight http://hydraulicspneumatics.com/accumulators/bladder-accumulators-shed-weight <div class="field-byline"> Staff </div> <div class="node-body article-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Steelhead1_0.png"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Steelhead1_0.png" style="width: 250px; height: 318px; float: right; margin-left: 4px; margin-right: 4px;" /></a>Bladder accumulators are constructed of a composite fiber shell over an aluminum liner, making them approximately one fourth the weight of steel accumulators. They come in seven standard sizes from 5 gal (19 l) to 30 gal (113 l), all with maximum operating pressure rating of 6,000 psi (414 bar). The lighter weight reduces shipping cost and reduces vehicle weight in mobile applications. Installation cost is also reduced by eliminating the need for heavy lifting equipment in many applications.</p> <p><strong><a href="http://steelheadcomposites.com" target="_blank">Steelhead Composites</a></strong>, (720) 524-3360<br /> OTC Booth 2001</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/accumulators/bladder-accumulators-shed-weight#comments Accumulators Products Thu, 16 Apr 2015 20:03:00 +0000 31981 at http://hydraulicspneumatics.com Fluid Lab in a Suitcase http://hydraulicspneumatics.com/hydraulic-filters/fluid-lab-suitcase <div class="field-byline"> Justin Bitner </div> <div class="node-body article-body"><p>The best way to maintain a hydraulic system is to make fluid change/filtration decisions based on actual fluid condition, rather than time-in-service or other arbitrary measures. Using a &ldquo;laboratory-in a-suitcase,&rdquo; such as the OCM 01 Condition Monitoring System from Eaton&rsquo;s Internormen Product Line, in the field helps facilitate that process.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Hydraulic%20Filtration-Sidebar.gif" style="width: 595px; height: 447px;" title="Portable contamination assessment instruments, such as this OCM 01 condition monitoring system, provide instant indication of a hydraulic system’s fluid cleanliness. " /></p> <p>It&rsquo;s flexible enough to work in either suction or pressure mode, and can handle traditional bottle samples. The compact machine can measure:</p> <p>&bull; Contamination classes according to ISO 4406:99, SAE AS 4059, NAS 1638 protocols</p> <p>&bull; Dynamic viscosity in MPa-s</p> <p>&bull; Temperature in &deg;C and &deg;F</p> <p>&bull; Water saturation in % and for certain fluids, the theoretical absolute water content in ppm</p> <p>&bull; Relative dielectricity</p> <p>Users get simultaneous instant readings of particulate contamination and fluid aging with a single measurement using calibrated in-line sensors. The system&rsquo;s color LCD display and software guide an operator through the calibration and test procedure. It also features integral data-storage capabilities, the ability to write to USB flash drives, and communication with other customer systems via LabVIEW-based software and an RS-232 interface.</p> <p>In practice, the system suited for documenting the condition of any new system, any system that has been opened to the atmosphere for maintenance, or immediately after fluid replacement, to provide a baseline that&rsquo;s used to compare with future readings. Then, the system is periodically re-tested according to a schedule based on operating experience and the cleanliness recommendations of various component manufacturers.</p> <p>It&rsquo;s worth noting that condition monitoring is an important tool for extending the life of equipment other than hydraulic systems. Eaton&rsquo;s Internormen OCM 01, for example, can be used to test foamed oils in the lubrication systems of large gearboxes typically found in wind-power nacelles, ships, and steel works.</p> <p>Justin Bitner is Product Specialist at Eaton Corp., Filtration Div., Tinton Falls, N. J. For more information, call (732) 212-4700, or visit <a href="http://eaton.com/filtration" target="_blank">eaton.com/filtration</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-filters/fluid-lab-suitcase#comments Hydraulic Filters Hydraulic Fluids Thu, 16 Apr 2015 19:09:00 +0000 31961 at http://hydraulicspneumatics.com Fine Filtration Foils Hydraulic-System Failures http://hydraulicspneumatics.com/hydraulic-filters/fine-filtration-foils-hydraulic-system-failures <div class="field-byline"> Justin Bitner </div> <div class="field-deck"> In addition to the system downtime due to damage caused by contaminated fluids, costs can pile up when components need replacement. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/fine-filtration-foils-hydraulic-system-failures-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Contamination is the deadly enemy of hydraulics. In fact, more than 80% of all hydraulic failures can be traced directly to contaminated fluids, and that includes failures in hoses and fittings as well as pumps and valves.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/blog/right-way-do-offline-filtration-hydraulic-systems">The RIGHT Way To Do Offline Filtration On Hydraulic Systems</a></p> <p><a href=" http://hydraulicspneumatics.com/blog/hydraulic-oil-contamination-how-its-cure-can-be-worse-disease">Hydraulic Oil Contamination: How Its &#39;Cure&#39; Can Be Worse Than The Disease</a></p> <p><a href=" http:/hydraulicspneumatics.com/200/TechZone/HydraulicFilter/Article/False/87461/TechZone-HydraulicFilter">Keeping a handle on mobile and industrial hydraulic filtration</a></p> </div> <p>The relationship between fluid contamination and component life is so consistent that hydraulic and filtration OEMs actually publish charts that can be used to predict the consequences of inadequate filtration, as shown in the table. Furthermore, as operating pressures rise and component tolerances tighten in the search for ever-greater efficiency, the potential exists for contaminant particles to cause even more damage to a hydraulic system.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Hydraulic%20Filtration-Lead.gif" style="width: 595px; height: 397px;" title="Is this fluid clean? Most contamination particles in hydraulic fluid are too small to be seen by the naked eye, which is why contamination-monitoring instruments are important for maintaining high system reliability. " /></p> <p>While users of industrial hydraulic systems have dealt with this issue for some time, it has only recently come to the fore in the mobile world, where spin-on filters and time-based fluid maintenance are still commonly found. Neither of those technologies, however, is sufficient to protect today&rsquo;s high-pressure, high-performance mobile hydraulic systems.</p> <p><strong>Quantifying contamination</strong></p> <p>What industrial hydraulic systems need is absolute filtration, which is defined by a performance rating known as the Beta ratio produced by the Multi-Pass Filter Performance Beta Test (ISO 16889). Test results are reported as a Beta ratio of the number of particles greater than a designated size upstream of the test filter compared with the number of same-sized particles downstream.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/RecFluidClean-TABLE.gif" style="width: 595px; height: 1594px;" /></p> <p>Modern hydraulic systems require filtration with a Beta ratio of 200 (99.5% of contaminant particles removed) or 1000 (99.9% of contaminant particles removed) to realize maximum service life. But, the Beta ratio is only the beginning of the cleanliness story.</p> <p>A filter&rsquo;s dirt-holding capacity, pressure-drop characteristics, and Beta-ratio stability are also critically important. Beta-ratio stability is the ability of a filter element to perform well in today&rsquo;s dynamic hydraulic systems, not just in a laboratory. In practical terms, this means a cartridge-type filter is nearly always the best choice.</p> <p>Today&rsquo;s best filter cartridges use multiple layers of synthetic media to maximize performance in all areas. Each filter layer provides a certain function that can support filtration performance, dirt-holding capacity, or beta stability.&nbsp;&nbsp;&nbsp;</p> <p>Cartridge-type filters also help drastically reduce the fluid loss that occurs each time a spin-on type of filter is changed, resulting in a positive impact on economics as well as the environmental. Considered together with the extended component life that can be expected from a properly protected system, these factors easily offset the slightly higher cost of the cartridge-type filter.</p> <p>Cartridge filters are the standard in industrial hydraulic applications. They&rsquo;re also seeing wider adoption in the mobile environment, which also faces rising operating pressures and greater component sophistication.</p> <p><strong>Mobile Challenges and Solutions</strong></p> <p>Space is always a major consideration in mobile equipment, and the extra components involved in Tier 4-compliant diesel after-treatment systems make this issue more critical than ever. One successful approach for minimizing the filtration footprint is to use tank-top filters integrated into the hydraulic reservoir. Filter OEMs have developed a number of successful designs for this application, and some reservoir manufacturers now offer pre-installed versions as standard equipment. This trend is sure to accelerate in light of tightening global emission requirements.</p> <p>Cold-start issues also are unique to the mobile environment. Hydraulic fluids thicken at low temperatures, which will increase the pressure drop across the filter element. Performance degrades until the fluid reaches operating temperature. This phenomenon is most often equated with the operator&rsquo;s comment that says &ldquo;I started up and hit the lever, but nothing happened.&rdquo;</p> <p>Installing a larger filter is one solution, but it adds cost and bulk to the system. Another common workaround involves simply bypassing the filter via a pressure relief valve until the fluid comes up to temperature. The downside of that approach, though, is it sends contamination directly downstream.&nbsp; A more practical approach uses a bypass valve, but returns the unfiltered fluid to the reservoir instead of letting it circulate through the system.</p> <p><strong>Achieving Realistic Goals </strong></p> <p>With today&rsquo;s filtration technology, an attainable goal for mobile equipment is to reduce fluid contamination to the point whereby it no longer contributes to the failure of any system component during the component&rsquo;s reasonably expected lifetime. To get there, a target cleanliness level must first be set, one that considers a system&rsquo;s specific operational needs.</p> <p>Cleanliness is a very specific quantitative value arrived at using a laboratory particle counting procedure defined by the ISO 4406:99 standard. While it&rsquo;s too complex to include here, the important output is a cleanliness code consisting of three numbers, e.g. 17/14/12, that represent the number of particles of a specific size found in the oil sample.</p> <p>The aforementioned contamination/component failure charts are based on cleanliness levels applied to the most contamination-sensitive system components. Fluid-power professionals should use these guidelines to help define target cleanliness levels for particular hydraulic systems.</p> <p>After defining those levels, the only way to measure success is to monitor fluid conditions systematically. Traditionally, samples are sent to a lab for analysis, but that isn&rsquo;t always easy to accomplish with mobile equipment. Fortunately, Eaton and some other filtration suppliers now offer portable &ldquo;Lab-In-A-Suitcase&rdquo; solutions that can be used to monitor fluid cleanliness in the field <em>(see &ldquo;<a href="http://hydraulicspneumatics.com/hydraulic-filters/fluid-lab-suitcase" target="_blank">Fluid Lab in a Suitcase</a>&rdquo;)</em>.</p> <p>Contamination sources for mobile equipment is a topic worthy of a whole series of articles, but the key point is: Never assume that the fluid going into your system is clean unless you are filtering it as it&rsquo;s being put into the reservoir. A cartridge filter is one of the most cost-effective tools available for hydraulic system maintenance, and will pay for itself many times over by extending the life of expensive components.</p> <p><strong>Building a Strategy</strong></p> <p>A well-planned and consistently applied filtration strategy built around modern cartridge filtration systems and systematic fluid monitoring will extend the life of critical hydraulic components and improve the productivity and uptime availability of mobile equipment. It will also extend the life of hydraulic fluids and reduce the cost of proper disposal of used fluids and filter elements.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/fine-filtration-foils-hydraulic-system-failures-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Ignoring the need for fine filtration will lead to damaging effects in your systems&hellip; and your bottom line. The solutions exist&mdash;it&rsquo;s time to put them to work.</p> <p><em>Justin Bitner is Product Specialist at Eaton Corp., Filtration Div., Tinton Falls, N. J. For more information, call (732) 212-4700, or visit <a href="http://eaton.com/filtration" target="_blank">eaton.com/filtration</a>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-filters/fine-filtration-foils-hydraulic-system-failures#comments Hydraulic Filters Hydraulic Fluids Rail, Truck & Bus Thu, 16 Apr 2015 15:55:00 +0000 31951 at http://hydraulicspneumatics.com Closing the Loop on Pneumatic Drive Control http://hydraulicspneumatics.com/controls-instrumentation/closing-loop-pneumatic-drive-control <div class="node-body article-body"><p>Pneumatics holds many advantages of other power-transmission technologies used in factory automation. These include speed, repeatability, safety, reliability, cleanliness, low potential for heat buildup, and relatively high power density. However, pneumatics is often overlooked for applications requiring closed-loop position control.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/pneumatic-valves/positioning-air">Positioning with Air</a></p> <p><a href=" http://hydraulicspneumatics.com/controls-amp-instrumentation/electronic-controls-deliver-precise-pneumatic-motion">Electronic Controls Deliver Precise Pneumatic Motion</a></p> <p><a href=" http://hydraulicspneumatics.com/controls-amp-instrumentation/servopneumatic-control-simplifies-linear-positioning">Servopneumatic control simplifies linear positioning</a></p> </div> <p>Although pneumatics is usually called on for its rapid, pick-and-place capabilities, advances in software, electronic control, and valve design may start giving other technologies a run for their money. A case in point is the S2 servopneumatic proportional control system, from Enfield Technologies, Shelton, Conn.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Enfield-S2-025-U-04.gif" style="width: 350px; height: 256px; float: left;" title="Enfield’s S2 servopneumatic proportional system mains control of controls heavy loads at high speeds while positioning a cylinder anywhere along its stroke. " /></p> <p>Enfield&rsquo;s S2 Proportional Control System is intended for applications requiring high speed and high force control simultaneously for positioning a cylinder anywhere along its stroke. Speeds up to 2.0 m/sec can be achieved while decelerating the cylinder to a smooth, controlled stop. Doing so prevents premature cylinder wear and damage.</p> <p>The system can maintain control of masses exceeding 50+ kg masses at speeds to 0.5 m/sec (20 in./sec) by choosing an appropriate operating pressure and cylinder bore. The accompanying table shows maximum controllable speeds for six different loads and four different cylinder bores. Values in the table are based on test results from typical setup: a 250-mm (10-in.) stroke guided horizontal cylinder with 5.5 bar (80 psi) inlet pressure. Changes in moving mass, cylinder orientation or other system parameters will impact maximum speed.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Cylinder-Speed-Table.gif" style="width: 595px; height: 214px;" title="The table shows maximum controllable speed using four different cylinder bores and size different load. Values are for general guidance only." /></p> <p><em>For more information, call (203) 375-3100 or visit <a href="http://enfieldtech.com" target="_blank">http://enfieldtech.com</a>. </em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/closing-loop-pneumatic-drive-control#comments Controls & Instrumentation Cylinders & Actuators Thu, 16 Apr 2015 15:25:00 +0000 31941 at http://hydraulicspneumatics.com E-Commerce Website Lends a Hand to Oil Cooler Distribution http://hydraulicspneumatics.com/news/e-commerce-website-lends-hand-oil-cooler-distribution <div class="field-deck"> E-commerce website facilitates the selection and purchase of oil coolers. </div> <div class="node-body article-body"><p>Thermal Transfer Products (TTP), an API heat transfer company, is introducing its new oil cooler E-commerce website to maintenance, repair, and operations (MRO) personnel, along with identical partner branded &ldquo;faux&rdquo; site participation for subscribing distributors. The site features four easy methods for selecting and sizing oil coolers suited to specific hydraulic applications:</p> <p>&bull; A TTP shopping catalog using TTP part numbers<br /> &bull; Finding a brand interchange to a TTP oil cooler<br /> &bull; X Selector software for selecting a heat exchanger<br /> &bull; ModelSmith, an additional tool for choosing an air cooler</p> <p>The catalog products list is organized according to size, application, cooler type, and cooling media. Each model is hyperlinked to its page in the catalog. From the catalog, the user can view list pricing, features, benefits, and options before selecting a product for the shopping cart and checking out. Users can also view the models and check on the starting price by submitting a known TTP part number.</p> <p>A crossover/interchange method compares a cooler manufactured by another company to the replacement product offered by TTP. The user enters the name of the manufacturer and the TTP part number in order to compare prices and features of the products and to see if TTP can replace a current model.</p> <p>X Selector software allows users to enter their specific oil-cooler requirements, including performance, material, weight, size, coolant, and price factor. The software makes it possible to perform heat-transfer sizing and analysis on shell and tube coolers as well as forced-air coolers. Users can change heat load inputs and vary results for their application. They can also print a quote sheet with relevant sizing and analysis data, or a spec sheet for each series by model to be attached to a quote. Users can request X Selector software from a TTP X Selector web page, and an email link will be sent to the user for downloading the software.</p> <p>ModelSmith lets users enter key options, such as number of passes, motor options, relief bypass type, connections, process fluid, and core orientation. ModelSmith will then produce matching products for the industrial requirements.</p> <p><strong>Close ties to distributors</strong></p> <p>Subscriptions for &ldquo;faux&rdquo; websites on the e-commerce site are available to partner distributors. Benefits of a faux site include qualified leads to promote purchase of additional components, such as hose, fittings, and power units. An extension of ttpoilcoolerstor.com, faux sites will include the distributor&rsquo;s brand and TTP oil cooler products displayed by the user&rsquo;s browser as search results. Faux sites contain links to partner-owned homepages, but follow TTP&rsquo;s Oil Cooler Store design. They are 100% turnkey managed by TTP, so the subscriber has no maintenance or order fulfillment involvement. TTP is responsible for managing order confirmation, processing, fulfillment, and all questions and concerns related to the order. Purchasers select the state for shipping, and the respective distributors will show up in the search results.</p> <p>For more information, visit <a href="http://www.ttpoilcoolerstore.com" target="_blank">ttpoilcoolerstore.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/e-commerce-website-lends-hand-oil-cooler-distribution#comments News Wed, 15 Apr 2015 19:08:00 +0000 31931 at http://hydraulicspneumatics.com Fluid Power Conference Targets Smart Industrial Applications http://hydraulicspneumatics.com/events/fluid-power-conference-targets-smart-industrial-applications <div class="field-deck"> Calling for Research Papers for the 10th International Fluid Power Conference! </div> <div class="node-body article-body"><p>The 10<sup>th</sup> International Fluid Power Conference (IFK) will take place March 8 to 10, 2016, at the Technical University of Dresden&rsquo;s Institute of Fluid Power, Dresden, Germany. The theme of the conference, presented in English, is &ldquo;Smart Fluid Power,&rdquo; addressing the growing industry trend of integrating fluid-mechatronic systems into intelligent designs.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/networking-learning-and-sharing-opportunities-abound-offshore-technology-conference ">Networking, Learning, and Sharing Opportunities Abound at the Offshore Technology Conference</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hannover-fair-2015-integrated-industry ">Hannover Fair 2015: An Integrated Industry </a></p> <p><a href="http://hydraulicspneumatics.com/blog/learn-playing-fischertechnik-pneumatic-kits">Learn by Playing with Fischertechnik Pneumatic Kits</a></p> </div> <p>The main conference topics are System Applications, Smart Integration, and Components and Fundamentals. Subtopics include mobile and transportation applications, industrial applications, pneumatic systems, system integration and safety, thermal behavior of fluid-power systems, actuators and sensors, and hydraulic and pneumatic components.</p> <p>Presentations on the first day will focus on methodology and fundamental research. Presentations over the next two days will cover applications and technology that integrate the latest innovations in fluid power. Meanwhile, attendees to the exhibition can network with manufacturers and obtain product information and meet manufacturers. Excursions to regional companies will follow the conference.</p> <p>IFK is accepting abstracts of research papers until May 31, 2015. Abstracts can be submitted using an interactive form or a template in Microsoft Word on the event&rsquo;s website. For more information, call Dominik Krahl, at +49 351-463 31964, email <a href="mailto:papers@ifk2016.com">papers@ifk2016.com</a>, or visit <a href="http://www.ifk2016.com" title="www.ifk2016.com">www.ifk2016.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/events/fluid-power-conference-targets-smart-industrial-applications#comments News Events Wed, 15 Apr 2015 18:40:00 +0000 31921 at http://hydraulicspneumatics.com Networking, Learning, and Sharing Opportunities Abound at the Offshore Technology Conference http://hydraulicspneumatics.com/news/networking-learning-and-sharing-opportunities-abound-offshore-technology-conference <div class="field-deck"> Feeling the Energy at OTC </div> <div class="node-body article-body"><p>The 2015 Offshore Technology Conference (OTC; <a href="http://www.otcnet.org/" target="_blank">www.otcnet.org</a>) will take place May 4-7 at NRG Park in Houston. At the conference, attendees can learn about the newest offshore technologies and meet new contacts in the offshore energy industry. This annual conference is one of the leading events for the development of offshore resources in the fields of drilling, exploration, production, and environmental protection. OTC attracts approximately 100,000 attendees from more than 120 countries, and has over 2,500 exhibitors, including a large number of fluid-power providers.</p> <p>The Annual OTC dinner will be held on May 3, from 5-10 p.m. in NRG Stadium as a networking opportunity to meet industry leaders and colleagues from around the world. Tickets are sold separately and proceeds will go to the IPAA/PESA Energy Education Center, for the benefit of the Energy Institute High School.</p> <p>The &ldquo;Next Wave&rdquo; program begins the conference on May 4 at 9 a.m. The program aims to prepare young professionals for the growing and changing global industry. Speakers with technological, operational, academic, and political backgrounds will discuss their experiences and consider the political aspects of the energy industry.</p> <p>The first day will also showcase University R&amp;D from 9 a.m. until 5 p.m., hosting six universities from across the United States that will share their R&amp;D projects relevant to offshore technology. From 4-5 p.m., a Spotlight on New Technology presentation will name the most innovative OTC exhibitors and showcase the latest advancements. The last event on May 4 is the Women in the Industry Sharing Experiences (WISE) event taking place from 4-6 p.m. This Networking Event will address the lack of gender diversity in the energy industry and is geared toward individuals that are interested in understanding the concerns and interests of the female workforce.</p> <p>Other university R&amp;D showcases will occur on the following days from 9 a.m. until 5 p.m. and on the last day from 9 a.m. and 2 p.m. The networking events on May 5-6 are &ldquo;Pursuing Opportunities in the Brazilian Market&rdquo; and &ldquo;Subsurface Integration: Where Engineering and Geoscience Meet.&rdquo;</p> <p>Other fun events are the complimentary OTC appreciation concert and the Houston Astros vs. Texas Rangers ballgame at Minute Maid Park on May 5.</p> <p>This year, a new program called &ldquo;d5: The Next Big Thing&rdquo; will take place at the University of Houston on the day after OTC (May 8) between 7 a.m. and 4:30 p.m. A distinguished lineup of innovative leaders will speak about business, technology, the environment, and offshore resources, in the hopes of provoking ideas for connections and solutions in the offshore energy industry. Tickets are sold separately.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/networking-learning-and-sharing-opportunities-abound-offshore-technology-conference#comments News Events Wed, 15 Apr 2015 18:16:00 +0000 31911 at http://hydraulicspneumatics.com <p>Nearly 100,000 attendees from more than 120 countries will descend on Houston&rsquo;s NRG Park for the Offshore Technology Conference.</p> Continuous Contamination Monitoring http://hydraulicspneumatics.com/hydraulic-fluids/continuous-contamination-monitoring <div class="field-deck"> Sponsored by MP Filtri </div> <div class="node-body article-body"><p style="padding-right: 8px; padding-left: 8px; font-size: 14px; line-height: normal; font-family: Helvetica, Arial, sans-serif;"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/04/MP-USA-logo180.jpg" style="width: 180px; height: 128px; float: right;" />How can do I know how much contamination is in a system? How can I determine if a new or existing machine meets a target ISO code? How do I keep &ldquo;built-in&rdquo; contamination from putting the reliability of our new machines into question?</p> <p style="padding-right: 8px; padding-left: 8px; font-size: 14px; line-height: normal; font-family: Helvetica, Arial, sans-serif;">Download&nbsp;<em style="font-size: 14px;"><strong style="font-size: 14px;">Continuous Contamination Monitoring</strong></em>&nbsp;to get the answers to these questions and more</p> <p>&nbsp;</p> <p><br /> <script> document.write('<iframe style="height: 900px; width: 100%" frameBorder="0" src="http://pages.hydraulicspneumatics.com/HP_Digital_MPFiltri_ContaminationMonitor_WP_JR_040915?partnerref=' + getParameterByName("partnerref") + "&elq=" + getParameterByName("elq")+'" frameborder="0"></iframe>'); function getParameterByName(name) { var match = RegExp('[?&]' + name + '=([^&]*)') .exec(window.location.search); if(match == null) return ""; return match && decodeURIComponent(match[1].replace(/\+/g, ' ')); } </script></p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-fluids/continuous-contamination-monitoring#comments Design FAQs Hydraulic Fluids Wed, 15 Apr 2015 15:32:00 +0000 31791 at http://hydraulicspneumatics.com The Hydraulic Maintenance Dilemma: Not Deciding Has Consequences http://hydraulicspneumatics.com/blog/hydraulic-maintenance-dilemma-not-deciding-has-consequences <div class="node-body blog-body"><p>A hungry donkey enters a barn in search of hay. Much to his delight he discovers two identical haystacks, each on the opposite side of the barn. The donkey stands in the middle of the barn between the two piles of hay, not knowing which one to choose. Hours go by, and then days, but he still can&#39;t make up his mind. Unable to decide, the donkey starves to death.<br /> <br /> This short parable comes from the French logician and philosopher Jean Buridan&#39;s commentaries on Aristotle&#39;s Theory of Action, and so the story is known as &#39;Buridan&#39;s Ass&#39;.<br /> <br /> When he constructed this story, Buridan presumably chose a donkey because they&#39;re not renowned for their intelligence. But having grown up on a farm, I can&#39;t imagine any hungry animal dithering in such a way. Not even a donkey.<br /> <br /> Regardless, how smart donkeys really are is unimportant to the moral of the story, which is: not deciding has consequences. And options can be a blessing as well a curse. Had the donkey found only one haystack inside the barn, there&#39;d have been no decision to make and he would not have starved to death.<br /> <br /> But life is not that simple. Back in 1941, the philosopher Eric Fromm wrote a book called Escape From Freedom. In it he said that in a modern democracy people are beset not by a lack of options, but by a dizzying abundance of them. This is even more true today. Figuratively speaking, we&#39;re all Buridan&#39;s Ass, completely surrounded by haystacks. The options may be nice to have, but not deciding has consequences.<br /> <br /> This of course applies on all levels of life, both personal and professional. In the hydraulics biz, our main focus here, there are always decisions waiting to be made. What type of oil to use (lots of haystacks to choose from there). A planned change-out to call. Which proactive maintenance tasks to do on what machines and when. A component to be declared faulty and so on.<br /> <br /> Often such decisions must be made in the absence of perfect information, or worse, in the presence of conflicting information. An example that comes to mind is the installation of suction strainers on hydraulic pump inlet lines.<br /> <br /> As you may already be aware, I&#39;m a loud and enthusiastic advocate of not installing suction strainers, and in the majority of applications, removing and discarding them when they are installed. As a result, I&#39;m always interested in any new information on this issue, especially if it&#39;s anything &#39;official&#39; from a hydraulic pump manufacturer.<br /> <br /> On this note, recently brought to my attention was the data sheet for Nachi PVS series variable volume piston pumps, in which Nachi, under the heading Management of Hydraulic Operating Fluid on page P-2, recommends the installation of a suction strainer: <em>&quot;Provide a suction strainer with a filtering grade of about 100&micro;m (150 mesh).&quot;</em><br /> <br /> The people at Nachi obviously haven&#39;t read my books <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=isthsp"><strong>Insider Secrets to Hydraulics</strong></a> and <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=phfsp"><strong>Preventing Hydraulic Failures</strong></a>! Although to be fair, neither has been translated into Japanese at this point in time. Seriously though, to the best of my knowledge, Nachi is in a very small minority of pump manufacturers who actually recommend the use of a suction strainer.<br /> <br /> Contrast Nachi&#39;s recommendation, with Bosch Rexroth&#39;s. The data sheet for their SV-20 &amp; SV-25 series variable vane pumps, on page 2 states: <em>&quot;Bosch Rexroth does not recommend the use of inlet suction strainers.&quot;</em><br /> <br /> That&#39;s one pump manufacturer for and one against. Here&#39;s another, Eaton-Vickers, sitting on the fence:<br /> <br /> <em>&quot;[Reservoir] outlet line strainers, also called [pump] inlet filters or inlet screens are very common. This may be more traditional than functional... They are intended to keep larger solid contaminants from entering the hydraulic system. A drawback is that they are quite inaccessible for service and cleaning. If they become restricted due to excess contamination, they can cause cavitation and damage to system pumps. A more current approach is to ensure clean fluid is maintained in the reservoir, precluding the need for an outlet line strainer.&quot;</em><br /> <br /> This piece of prose may well have been written by one of their in-house attorneys. It seems this pump manufacturer wants you to make up your own mind. But at least it acknowledges that the tradition of always installing a suction strainer is outdated.<br /> <br /> Then there&#39;s this from page 31 of the <em>Contamination Control Program</em> manual by Stauff, a company that does not manufacture pumps, but does make suction strainers:<br /> <br /> <em>&quot;WARNING: It is advisable to check with the pump manufacturer before any type of filter is fitted to the pump inlet line... In general, suction strainers do not contribute to system cleanliness. The difficulty associated with changing strainers, and knowing if and when they are clogged [may result in pump damage].&quot;</em><br /> <br /> So if you take Stauff&#39;s advice and check with the pump manufacturer, one says &#39;yes&#39;, another says &#39;no&#39; and a third says &#39;you decide&#39;. As is the case with a myriad of other equipment maintenance decisions, this one is your call. And it&#39;s a call YOU have to make, one way or the other. Because installing a suction strainer purely out of tradition can be a costly mistake. And to discover six other costly mistakes you want to be sure to avoid with your hydraulic equipment, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</strong></a>.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/hydraulic-maintenance-dilemma-not-deciding-has-consequences#comments Hydraulics At Work Wed, 15 Apr 2015 00:32:00 +0000 31901 at http://hydraulicspneumatics.com Positioning with Air http://hydraulicspneumatics.com/pneumatic-valves/positioning-air <div class="field-byline"> Steve Vincent and John Bridges </div> <div class="field-deck"> Electropneumatic-positioning systems bring extreme accuracy to high-speed automation. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/positioning-air-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>When programming and executing high-speed automation, accuracy in motion sequences&mdash;particularly endpoint accuracy&mdash;is crucial to manufacturing speed, throughput, and quality. Every movement within a motion sequence must be precise; not only in its positioning, but also in its timing.</p> <p>Electromechanical positioning is the most common way to accomplish this task in automation systems. In electromechanical systems, linear devices (e.g., profiled rails, ball screws, and linear modules driven by electric motors) lift, move, and place components. These systems can provide excellent positioning accuracy. However, some inherent drawbacks may, in time, increase overall manufacturing costs and affect productivity.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/controls-amp-instrumentation/servopneumatic-control-simplifies-linear-positioning">Servopneumatic control simplifies linear positioning</a></p> <p><a href=" http:/hydraulicspneumatics.com/200/TechZone/PneumaticValves/Article/False/86502/TechZone-PneumaticValves">Boosting engine performance with electropneumatics</a></p> <p><a href=" http://hydraulicspneumatics.com/pneumatic-valves/kjell-lyngstad-outlines-aventics-future">Kjell Lyngstad outlines Aventics&rsquo; future</a></p> </div> <p>An alternative to electromechanical positioning that&rsquo;s gaining popularity is electropneumatic positioning. Electropneumatic systems use electrically operated valves to control air flow or pressure to move an actuator to the required location.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/fig1.gif" style="width: 595px; height: 477px;" title="Typical components of an EPPS system include a pneumatic cylinder, ED02 electropneumatic pressure regulators, an EPPC position controller, and an SM6-AL sensor. It uses direct-acting proportional pressure control to enhance positioning accuracy and system efficiency." /></p> <p>In many cases, numerous advantages are associated with pneumatic positioning, including greater productivity, better repairability, and lower total cost of ownership. Pneumatic actuation systems also provide engineers with a number of implementation options, letting them select the best design for a given task.</p> <h3><strong>Electromechanical vs. pneumatic</strong></h3> <p>Accurate positioning refers not only to an actuator&rsquo;s endpoint accuracy, but also to the accuracy of its position at any selected point along a path of motion. Although endpoint accuracy is important, positioning control throughout a motion sequence is often the desired goal. A positioning system should be able to find and maintain the required position anywhere along its stroke length.</p> <p>With the advent of high-speed production systems across many industries, automation engineers now focus more than ever on finding cost-effective, energy-efficient positioning-control technologies that improve accuracy. Electromechanical positioning can meet these requirements. However, over the long term, certain aspects of electromechanical technology can lead to higher costs and cause production problems.</p> <p>For example, electromechanical-positioning systems can heat up and undergo temperature-related changes as well as wear and tear. That, in turn, requires significant downtime to cool. In fact, lower-cost systems often are only capable of 50% duty cycles, spending as much time off as they spend working. Pneumatic-positioning systems, on the other hand, do not include mechanical parts that can overheat. This permits a 100% duty cycle with components that stay cool and can work around the clock.</p> <p>Also, pneumatic-positioning systems are often more energy-efficient. For instance, electromechanical systems consume electricity simply to hold a position. And without power, electromechanical systems reset themselves, losing any previous work leading up to a power outage. Productivity suffers as a result.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/fig2.gif" style="width: 595px; height: 380px;" title="Typical pneumatic cylinders used in an EPPS application include both piston-rod and rodless versions. " /></p> <p>Pneumatics doesn&rsquo;t have this problem. When designs use pneumatic flow control, a valve in the center position blocks airflow in either direction and the cylinder piston automatically stays put. In the event of power loss to a production system or plant, it&rsquo;s much easier to restart the operation with pneumatic-positioning systems. Proportional pressure control and normally closed valves provide the same benefits when power is lost.</p> <p>In addition, pneumatic components are relatively easy and economical to repair. When pneumatic cylinders break or wear out, they can be repaired or replaced at a low cost. On the other hand, when an electromechanical system has issues, it typically requires an expensive new electric drive.</p> <p>These advantages, combined with the inherent low-maintenance nature of pneumatic devices, create a significantly lower true cost of ownership versus an electromechanical setup. In fact, the cabling alone on an electromechanical device can cost more than an entire pneumatic system.</p> <h3><strong>Pneumatic positioning</strong></h3> <p>Pneumatic-powered actuation provides a proven method for accurate and reliable positioning. Most pneumatic-positioning systems, which combine control valves, cylinders, and simple sensors, rely on directional flow control to control positioning. Such a system monitors piston position feedback and decides the direction air needs to flow to achieve the desired position. Shifting a valve and allowing compressed air flow into the proper cylinder port extends the actuator to the required position. Reversing the valve retracts the cylinder in the opposite direction.</p> <p>This type of system provides a broad range of directional flow control, translating to precise, incremental positioning control. The valves for such a system are selected based on the bore and stroke of the pneumatic actuator. In general, control of air flow can range from 0 to 1000 lpm.</p> <p>Still, some drawbacks hinder the use of pneumatic flow control for positioning. The most common concern is associated with a basic limitation of pneumatics: Such systems cannot be perfectly sealed, and an incremental or intermittent loss of air and pressure is unavoidable.</p> <p>With directional flow control, minor leaks cause the pneumatic cylinder piston to move slightly. The positioning system&rsquo;s controller receives motion feedback from the sensor, and the controller responds by slightly adjusting flow to compensate for piston movement. This slight but constant back-and-forth motion, known as <em>dithering</em>, negatively affects system accuracy and functionality.</p> <h3><strong>Proportional pressure positioning</strong></h3> <p>Responding to concerns about positioning accuracy and dithering, engineers at <a href="http://www.aventics.com/us" target="_blank">AVENTICS</a> developed a system that relies on direct-acting proportional control of air pressure&mdash;rather than directional flow control&mdash;to improve the precision of pneumatic-positioning systems.</p> <p>The cost-effective design integrates control electronics with a range of standard pneumatic valves, cylinders, and actuators. But it differs from directional flow-control setups in that it uses direct-acting proportional pressure regulators to constantly monitor and adjust pneumatic pressure. That, in turn, permits precise control of cylinder positioning.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Fig3-AutoW-Air-EPPS-circuit.png" style="width: 595px; height: 541px;" title="The schematic shows a typical EPPS system using a rod-type pneumatic cylinder." /></p> <p>The electropneumatic positioning system (EPPS) uses two proportional pressure regulators mounted on the pneumatic cylinder, one on either side of the cylinder piston. One side maintains a constant pressure using the first proportional pressure regulator (E/P valve), while the second E/P valve controls pressure on the opposite side.</p> <p>The unit&rsquo;s electropneumatic positioning controller (EPPC) receives data from, and sends analog pressure command signals to, the proportional pressure regulators. The controller compares the pressure ratio of one side to the other. A proportional-integral-derivative (PID) loop delivers an analog output to the second proportional pressure regulator to adjust the pressure as needed. Greater pressure on the second side means the piston will move forward, and vice versa.</p> <p>The main advantage of this method is enhanced accuracy. Proportional pressure regulators constantly and precisely control the pressure, eliminating effects of dithering. The direct-acting pneumatic pressure regulators can control pressure within 0.10 psi, and the EPPS system can use any of the company&rsquo;s pneumatic actuators. As a result, system designers have much more flexibility.</p> <p>Note that every actuator has different physical characteristics. Therefore, it&rsquo;s difficult to make a broad statement regarding positional accuracy. However, with a properly selected actuator and optimized tuning of the controller, &plusmn;1-mm positioning accuracy is certainly possible. This is better than traditional flow-controlled pneumatic positioning.</p> <p><strong>Economical precision</strong></p> <p>While electromechanical and flow-based electropneumatic systems offer effective positioning capabilities, direct proportional pneumatic-control systems such as the EPPS maintain a number of inherent advantages.</p> <p>The EPPS is designed to economically deliver the benefits of pneumatic positioning to a broad range of automation applications. The system uses standard, off-the-shelf components that are easy to integrate, and they can be quickly replaced when needed. The EPPS integrates an AVENTICS SM6-AL (Hall Effect) sensor, and does not require the cylinder piston rod to be gundrilled as in traditional pneumatic systems. By eliminating gundrilling, standard cylinders can be used, thus reducing cost and delivery time.</p> <p>Although it relies on electronic controls, the EPPS does not require complex programming. A user simply inputs an analog position command, saving time and resources. Standard analog command for stroke set-point is 0 to 10 V dc or 4 to 20 mA.</p> <p>In general, electropneumatic systems are more durable than electromechanical systems because they do not require electric motors or drives at the actuator. As a result, they can withstand harsh conditions such as temperature extremes, dusty conditions, and wet and dirty environments.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/positioning-air-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Finally, the EPPS improves positioning accuracy compared to conventional pneumatic positioning, and it eliminates drawbacks like the dithering associated with flow-based pneumatic positioners. For many automation applications requiring proven performance, high throughput, and ultraprecise positioning accuracy and control, the EPPS offers a viable alternative to electromechanical and flow-based positioning systems.</p> <p><em>Steve Vincent is Product Manager and John Bridges is Marketing Manager for AVENTICS Corp., Lexington, Ky.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/pneumatic-valves/positioning-air#comments Cylinders & Actuators Pneumatic Valves Tue, 14 Apr 2015 15:45:00 +0000 31881 at http://hydraulicspneumatics.com Software Helps Develop Subsea Systems (.PDF Download) http://hydraulicspneumatics.com/datasheet/software-helps-develop-subsea-systems-pdf-download <div class="node-body datasheet-body"><p>Deep-sea drilling operations often require hydraulic power at the seabed to actuate emergency blowout prevention (BOP) valves or other flow controls. Sometimes, large pre-charged accumulator arrays can be installed...</p> <p><strong>Register or sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.</strong></p> <div class="gatedLogin well"> <div class="contentPadding clearfix"> <h2>Register for Complete Access (Valid Email Required)</h2> <p><p><img src="http://hydraulicspneumatics.com/site-files/hydraulicspneumatics.com/files/uploads/2015/03/HP-Calculate-w-Air.jpg" />By registering on Hydraulics &amp; Pneumatics now, you&#39;ll not only gain access to , you&#39;ll also receive a complimentary copy of <em>Hydraulics &amp; Pneumatics&#39; Measure with Air </em>wallcharts.</p> </p> <div class="gatedLoginButtons gated-register-button"> <div class="button-region"> <a href="/penton_ur/nojs/user/register?source=gated&nid=31851&regmode=1" class="ctools-use-modal btn btn-branded btn-wide ctools-modal-register" title="Register at this site.">Register</a> </div> <div class="loginLinkText"> Already registered? <a href="/penton_ur/nojs/login" class="ctools-use-modal ctools-modal-log_in" title="">Log In</a> here. </div> </div> </div> </div> </div> <div class="og_rss_groups"></div> Gold Tue, 14 Apr 2015 14:11:00 +0000 31851 at http://hydraulicspneumatics.com Hydraulic-Electric Analogies—Power Sources, Part 1 http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-1 <div class="field-deck"> The analogous nature of hydraulics and their electrical counterparts becomes even more evident when examining motors and power conversion. </div> <div class="node-body article-body"><p>Hydraulic pumps and motors, and electrical generators and motors, have been introduced in earlier discussion, but they all deserve more attention regarding their remarkable similarities as well as their differences. In short, appreciating their analogies requires further discussion. In some ways, it&rsquo;s uncanny how similar hydraulic pumps and motors are similar to electrical generators and motors. Yet, aside from the obvious differences in their relative powering media, they differ significantly in other ways.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/hydraulic-electric-analogies-power-sources-part-1-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p><strong>Power Converters</strong></p> <p>Power converters are the devices (e.g., generators and alternators) that change mechanical power into electrical power or convert it electrical power to mechanical, as in the case of electric motors. Similarly, pumps convert their mechanical input power into hydraulic output power, and hydraulic motors convert hydraulic power to the mechanical domain. Generators and alternators are analogous to hydraulic Likewise, linear motors and rotary solenoids are analogous to hydraulic cylinders and rotary actuators, respectively.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/reservoirs-accessories/hydraulic-electric-analogies-reservoirs-and-grounds">Hydraulic-Electric Analogies: Reservoirs and Grounds</a></p> <p><a href=" http://hydraulicspneumatics.com/accumulators/hydraulic-electric-analogies-capacitors-and-accumulators-part-3">Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 3</a></p> <p><a href=" http://hydraulicspneumatics.com/accumulators/hydraulic-electric-analogies-capacitors-and-accumulators-part-2">Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 2</a></p> <p><a href=" http://hydraulicspneumatics.com/accumulators/hydraulic-electric-analogies-capacitors-and-accumulators-part-1">Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 1</a></p> <p><a href=" http://hydraulicspneumatics.com/other-technologies/hydraulic-electric-analogies-part-7-variable-electrical-transformers">Hydraulic-Electric Analogies &mdash; Part 7: Variable Electrical Transformers</a></p> </div> <p>The foremost, yet often-forgotten, advantage of hydraulic machinery is how easy it is to achieve linear motion, using a device as simple as a cylinder. In kind, the often-forgotten advantage of electrical machinery is the ease in achieving rotary motion. Virtually no machine is simpler, at least in principle, than an induction motor. Like the hydraulic cylinder, the induction motor has only one moving part. In fact, the perfect analogy to the hydraulic cylinder would be the induction motor, were it not for their differences in output motion, i.e., linear versus rotary motion.</p> <p>A hydraulic rotary actuator with its single moving part might be a more perfect analogy to the induction motor, except for the former&rsquo;s inability to provide unlimited rotational angular motion. Indeed, the rotary actuator provides rotational output, and does so with only a single moving part, at least in one of its incarnations. In contrast, achieving linear output motion with electrical machines requires rotary-to-translational motion, such as lead and ball screws, which have reliability and loading limitations.</p> <p>On the other hand, high-pressure hydraulic pumps, notably piston types, are complex machines with many inner parts that must be manufactured to very exacting tolerances. Nonetheless, piston pumps and motors have advanced significantly, offering proven reliability in spite of their construction and design intricacies. Many of these issues will be covered in future articles, starting with details on electrical power-conversion machinery.</p> <p><strong>Electrical Power Conversion</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/1.png" style="width: 300px; height: 291px; float: left;" title="1. Essential ferromagnetic parts of a two-pole, two-phase synchronous motor include a permanent magnet." /></p> <p>This discussion begins with the principle parts of an alternating-current synchronous motor. Alternating-current machines are simpler than direct-current machines. Figure 1 shows the essential ferromagnetic parts of a two-pole, two-phase, synchronous motor. It consists of a permanent magnet, comprising the rotor, mounted on a central shaft to enable rotation. Surrounding the magnet are four stator pieces that will form the ferromagnetic cores of two stationary-voltage and/or current-activated electromagnets. Two opposing core pieces form one phase as well as forming one of the two electromagnets. Therefore, there are two stator pieces for one phase and two stator pieces for the other. Later, the article will show that there are four different magnetic poles, and yet it&rsquo;s still only a two-pole machine.</p> <p>Progressively and electrically exciting each individual magnetic core (electrical exciting coils are added) sequentially will show that the rotor can be magnetically attracted to the excited core and, thus, cause rotation. Figure 2 shows the added coils that form the two separate electromagnets. Batteries are used to illustrate the motor&rsquo;s operation, and later, ac will be used to excite the coils.<br /> <img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/2.png" style="width: 595px; height: 598px;" title="2. Even though this is an ac motor, this design adds coils to provide excitation to each of the stationary pole pieces, as well as discharge coefficient batteries. " /></p> <p>Note first that the switch <em>S2</em>, which is closed, supplies dc current to the vertical magnets, Furthermore, the current that enters the upper coil passes via a jumper wire and enters the lower coil, which is wound so that their respective magnetic fields are in the same direction to one another. The right-hand rule and nature of the windings tell us that the upper parts of both stator pieces are north magnetic poles and their bottoms are south magnetic poles. Consequently, the rotor&rsquo;s north magnetic pole is attracted to the south side of the upper stator piece, while its south pole is attracted to the north side of the bottom coil. This is an enhancing situation, meaning that the two stator magnets are both acting to keep the rotor in the electrical position shown.</p> <p>In addition, note that <em>S1</em> is open, which means no current is delivered to its coils. Thus, the coils contribute nothing to the positioning of the rotor. Their stator pieces are shown with no magnetic poles.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/3.png" style="width: 595px; height: 583px;" title="3. Opening of S2 and closing of S1 energizes the horizontal coils, and the rotor moves to the 9 o’clock position. " /></p> <p>In Figure 3, <em>S2</em> has been opened, which de-energizes the vertical coils while <em>S1</em> is closed and excites the horizontal coils. With no vertical magnetic field in the presence of a horizontal field, the rotor naturally snaps into the 9 o&rsquo;clock position as shown.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/4.png" style="width: 595px; height: 586px;" title="4. The progression of events in this setup is to open S1, de-energizing the horizontal coils while re-energizing S2, and reversing the battery’s polarity for the vertical coils. This reverses the magnetic poles of the vertical stator pieces." /></p> <p>This general process continues in Figure 4. Here the switch, <em>S1</em>, was opened, cutting current to the vertical coils. At the same time, the battery for the vertical coils has its polarity reversed and switch, <em>S2</em>, is closed. The current through the vertical coils will be reversed, which in turn reverses the magnetic polarities. At first glance, Figure 4 may appear the same as Figure 2. However, a closer look reveals that all of the poles are reversed along the vertical axis. The rotor now has turned a total of 180&deg;.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/5.png" style="width: 595px; height: 572px;" title="5. When the battery for the horizontal is reversed, S1 is again closed and S2 is opened. Subsequently, the horizontal coil polarities reverse and the rotor turns to the 270° position." /></p> <p>One additional step in this progression will turn the rotor another 90&deg; <em>(Fig. 5)</em>. Again, after only a quick glance, Figures 3 and 5 may seem to be the same; however, the magnetic polarities are reversed as in the earlier case. By properly sequencing the opening and closing of the switches and changing the battery polarities, the rotor can be made to progress through one complete revolution. The next logical step is to return to the starting conditions shown in Figure 2, enabling the motor to rotate continuously. It just requires the proper switching action.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/6.png" style="width: 595px; height: 493px;" title="6. Shown is a sequential timing diagram for the two-pole, two-phase, synchronous motor. " /></p> <p>A sequential timing diagram keeps track of events that must follow in a specific order. Figure 6 provides a diagram of the events described above. It&rsquo;s important to be aware that the current, <em>I<sub>A</sub></em>, is controlled by <em>S1</em> and <em>I<sub>B</sub></em> is controlled by <em>S2</em>. Notice how the graph indicates the switching of the batteries by showing a positive value for <em>I<sub>A</sub></em> in the 0&deg; interval, but a negative value in the 180&deg; interval. We can see in the current that this is really a two-pole machine because the currents require 360&deg; of shaft (rotor) rotation to get through one complete mechanical cycle. Also, bear in mind that the terms &ldquo;open&rdquo; and &ldquo;closed&rdquo; are used in the electrical context&mdash;closed is conducting, open is blocked.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/hydraulic-electric-analogies-power-sources-part-1-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-1#comments Cylinders & Actuators Hydraulic Pumps & Motors Tue, 14 Apr 2015 13:56:00 +0000 31861 at http://hydraulicspneumatics.com Hydraulic cartridge valves http://hydraulicspneumatics.com/200/TechZone/PneumaticValves/Article/False/13931/TechZone-PneumaticValves <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/cartridgevalves.gif" style="width: 250px; height: 150px; float: right; margin-left: 4px; margin-right: 4px;" />Cartridge valves control pressure, flow, and direction in sizes from 2 to 4 in. for flows to 5,000 gpm. Pressure rating is 6,000 psi. Compact design fits standard DIN 24342 cavity. Options include various mounting patterns for&nbsp; pilot valve; special materials; internally or externally piloted and drained. Can be designed with closing feature if power is lost.</p> <p><b>Olmsted Products, </b>(231) 929-1660, <strong><a href="http://www.olmstedproducts.com" target="_blank">www.olmstedproducts.com</a></strong></p> <p><img src="/site-files/hydraulicspneumatics.com/files/archive/www.hydraulicspneumatics.com/200/TechZone/PneumaticValves/Article/False/13931/image.gif" /></p> </div> <div class="og_rss_groups"></div> Hydraulic Valves Tue, 14 Apr 2015 13:52:00 +0000 5152 at http://hydraulicspneumatics.com Software Helps Develop Subsea Systems http://hydraulicspneumatics.com/other-technologies/software-helps-develop-subsea-systems <div class="field-byline"> Claude Ginsburg and Daniel Thomas </div> <div class="field-deck"> Modeling and simulation software not only can verify operating parameters of subsea hydraulic systems, but may also reveal opportunities for cost reductions. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/software-helps-develop-subsea-systems-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Deep-sea drilling operations often require hydraulic power at the seabed to actuate emergency blowout prevention (BOP) valves or other flow controls. Sometimes, large pre-charged accumulator arrays can be installed close to valves to provide a quick source of hydraulic power. However, in one recent study of an application, a downhole valve was located 2,000 ft. below its hydraulic power source. Some of the questions for the system designer that arose were:</p> <ul> <li>How long will it take to charge the accumulators?</li> <li>What will be the charging equipment requirements?</li> <li>How does hose compliance affect the response time and fluid volume required?</li> <li>Will there be any issues with water hammer transients?</li> <li>How do temperature changes affect the response at operating depths?</li> </ul> <p><img alt="Fig. 1" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Software_Fig1.jpg" style="width: 595px; height: 456px;" title="1. The function a 10-gpm pump, reservoir, valves, hoses, and controls of the BOP pump charging unit and power pod are simulated using Easy5 software. The charging unit is located on a drilling platform, 2 mi away from the power pod, which is submerged 7,000 ft. " /></p> <p>Hydraulic systems are often highly non-linear in nature; consequently, the relationships between pressure, temperature, flow, and motion are complex. For critical systems such as BOP valves, careful design mandates the use of software simulation to accurately predict the system performance and explore how the designs respond to different scenarios. For this project, Easy5 software was chosen as the modeling tool.</p> <h3>Summary of the Software</h3> <p>Easy5 engineering software is used to simulate dynamic systems characterized by differential, difference, differential algebraic, and algebraic equations. This spans a broad range of applications, such as mechanical, electrical, hydraulic, pneumatic, thermal, gas dynamics, powertrain, vehicle dynamics, digital/analog control systems, and more. Models in Easy5 are assembled on-screen from application-specific libraries of components (such as pipes, valves, actuators, fuel cells, and gears) and from general-purpose modeling blocks (e.g., summers, dividers, lead-lag filters, and integrators).&nbsp; The advanced application libraries available from MSC include:</p> <p><strong>Thermal hydraulic</strong>&mdash;Pipes, orifices, hydraulic valves, pumps, actuators, heat exchangers, and reservoirs are provided for modeling a wide range of hydraulic components.&nbsp;&nbsp; This library has been widely applied in the aerospace, off-road vehicle, and heavy machinery industries, as well as in oil and gas exploration. A compressible fluid formulation is used throughout the library, enabling accurate prediction of transient performance.&nbsp;</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/controls-instrumentation/electronic-controls-elicit-smoother-punching">Electronic Controls Elicit Smoother Punching.</a></p> <p><a href="http://hydraulicspneumatics.com/blog/do-you-still-dabble-qbasic">Do You Still Dabble in QBASIC?</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/gentlemen-stop-your-engines">Gentlemen, Stop Your Engines!</a></p> </div> <p><strong>Gas Dynamics</strong> (including pneumatics)&mdash;Pipes, orifices, pneumatic valves, compressors, and heat exchangers are included.&nbsp; Gases may be treated as ideal if appropriate, or a range of non-ideal gas models is available.</p> <p><strong>Electric systems</strong>&mdash;Contains AC and DC machines, power components, and basic circuit elements for analysis of electrical actuation, power electronics, and power transmission.</p> <p>Other application libraries are also available for modeling aerospace guidance systems, vehicle powertrains, internal combustion engines, and fuel cells. Interdisciplinary systems can readily be simulated. For example, Easy5&rsquo;s Thermal Hydraulics and Electric Systems libraries can be used together to analyze an electrically-actuated hydraulic system.</p> <h3>Modeling and Analyzing the System</h3> <p>A charging module consisting of a high-pressure, 10-gpm pump, reservoir, and associated valves and controls was located on a drilling platform in the North Sea. Standard 10,000 psi, 1-in. hoses connected the charge module to a BOP power pod located 2 miles away and 7,000 ft. below sea level. The completed borehole, located near the BOP pod, had a gate control valve placed 2,000 ft. deeper, to a depth of 9,000 ft.</p> <p><img alt="Fig. 2" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Software_Fig2.jpg" style="width: 595px; height: 438px;" title="2. Easy5 simulation of the valve actuation system shows valve trip signal to the fluid power pod and accumulator, with BOP gate forces 2,000 feet below. " /></p> <p>Many elements of a standard ISO engineering hydraulic schematic correspond to components available in the Easy5 libraries. Icons representing the components are dragged-and-dropped onto the computer display and placed similarly to those in a schematic drawing.</p> <p>Data connections, often representing instantaneous values of flow, pressure, signal level, and fluid properties, are established by clicking first on the upstream and then the downstream component. The designer generally is not concerned with what quantities need to be communicated because Easy5 automatically makes the correct data connections.</p> <p>The software model was divided into two segments: the charging portion and the valve actuation system, depicted in <em>Figs. 1 and 2</em>, respectively. Both schematics include software components from the Easy5 Thermal/Hydraulics Library that model the physics of the reservoirs, hoses, pipes, pumps, valves, orifices, actuators, and other components found in hydraulic systems.&nbsp; The data connections are represented on the drawings by lines; actual fluid conduits, such as pipes, have their own icons.</p> <p><img alt="Fig. 3" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Software-fig-3.jpg" style="width: 595px; height: 595px;" title="3. Simulation results from Fig. 1 show that more than 200 gal of fluid are required to pressurize the accumulators, pre-charged with nitrogen to 3,000 psia. " /></p> <p>The bulk modulus of the fluid (ethylene glycol/water/miscible oil) was also taken into consideration. Depth effects and instantaneous pressure, temperature, and heat transfer changes all contributed to the simulated response. The accumulators are represented by components from the Easy5 Pneumatics Library, which use real-gas equations of state. Both model segments assumed that hoses and other components were initially filled with fluid at the ambient pressure and temperature.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/software-helps-develop-subsea-systems-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <h2>Operation Sequences</h2> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/software-helps-develop-subsea-systems-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>In the charging sequence, fluid at 55&deg; F is pumped into the system until the pressure in the accumulators reaches 8,000 psia. At that point, the supply valve isolates the accumulators, the surface pump shuts down. The simulation results, shown in <em>Fig. 3</em>, point out that it requires more than 200 gal of fluid at atmospheric pressure and temperature to pressurize the accumulators (pre-charged with nitrogen to 3,000 psia) with 40 gal of fluid at 8,000 psia.</p> <p>Some of this extra fluid is consumed in the expansion of the hoses as they pressurize, and some is due to the increasing density with pressure and the decreasing temperature with depth, as the seabed ambient temperature is not much above freezing. As the fluid reaches design pressure at the accumulators in about 20 min, the controls shut the supply valve; the pressure then drops as the fluid cools. This action restarts the filling cycle until the pressure finally stabilizes in 30 min.</p> <p><img alt="Fig. 4" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Software-fig-4.jpg" style="width: 595px; height: 509px;" title="4. Simulation results of the closing sequence show ½ sec for the valve to close the 10-in. borehole. A significant pressure overshoot (circled) of 1,000 psi occurs from a water-hammer transient between the fluid supply and the control valve." /></p> <p>To achieve the required pressure, the threshold on the supply valve must be set somewhat higher than the required pressure and the gain adjusted to avoid repeated cycling of the pump. This is accomplished by running the simulation and changing the parameters until requirements are met. Data from the simulation showed that the pump required up to 43 hp during the charge cycle.</p> <p>Investigating the gate valve closure in the borehole required a second model, depicted in <em>Fig. 2</em>. A sensor near the valve location determines when the valve should close. An affirmative signal opens the BOP pod main valve at the accumulators and sends high-pressure fluid through a 2,000-ft, 1 in. hose and down 9,000-ft. to the valve. An actuator then closes the gate valve to seal the borehole. The forces that must be overcome to close the gate are variable. In this model, the roughly 2,000-lb. force was represented with both coulomb friction (opposing the motion) and a spring. The small amount of fluid used to operate the valve is exhausted to ambient through a check valve.</p> <p>Simulations of the closing sequence, with results shown in <em>Fig. 4</em>, reveal that it only takes about &frac12; sec for the valve to close the 10-in. borehole. However, a significant pressure overshoot (circled in the figure) of 1,000 psi occurs from a water-hammer transient between the fluid supply and the control valve. Reducing the supply valve opening diameter did not significantly impact the overshoot. Placing an accumulator near the control valve would reduce the effect, but space considerations eliminated this option. Fortunately, parametric studies with the model showed that reducing the ID of the hose from 1 in. to &frac12; in. significantly mitigates the transient maximum pressure (the red curve in <em>Fig. 4</em>). It takes longer to close the gate valve with the reduced flow rate, but this was tolerable. As a side benefit, the smaller diameter hose was a significant cost saving. The simulation time on a standard laptop required only a few minutes for each case, so several design experiments could be run economically.</p> <h3>Reviewing Benefits</h3> <p>A simulation tool such as Easy5 gives designers a significant edge when faced with challenging fluid power control issues. The ability to rapidly prototype a system and run parametric studies is only one aspect. Customized, reusable software libraries can be built to capture the proprietary knowledge of experienced engineers and make it available to other designers. Existing systems can be modeled&mdash;and problems isolated and identified&mdash;without resorting to physical testing.</p> <p><em>Claude Ginsburg and Daniel Thomas are senior development engineers at <a href="http://www.mscsoftware.com/product.easy5" target="_blank">MSC Software Corp.</a>, Newport Beach, Calif. For more information, call (714) 540-8900.</em></p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/software-helps-develop-subsea-systems-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table></div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/other-technologies/software-helps-develop-subsea-systems#comments Other Technologies Tue, 14 Apr 2015 13:50:00 +0000 31841 at http://hydraulicspneumatics.com A Floating Fish Factory http://hydraulicspneumatics.com/hydraulic-pumps-motors/floating-fish-factory <div class="field-deck"> The Northern Eagle trawls for fish in the Bering Sea and produces packaged, fast-frozen fish filets, ready for cooking. And of course, hydraulics holds an important role in highly productive operations. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/floating-fish-factory-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>American Seafoods Co., Seattle, is the largest supplier of pollock in the world. Mature pollock can grow to 3-ft. long and weigh more than 40 lb., but average 1 to 2-ft. long and weigh &frac12; to 2 lb. The Alaskan variety is widely used in fish sandwiches offered by major fast-food companies, primarily because of its mild taste. And far off the coast of Alaska is where you&rsquo;ll most likely find the Northern Eagle cruising the cold, deep waters of the Bering Sea for pollock.</p> <p><img alt="Fig. 1" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Lead-1.jpg" style="width: 595px; height: 418px;" title="The Northern Eagle departs Seattle for a journey to the Bering Sea in search of Alaskan Pollock. " /></p> <p>At 104-m long and 15-m wide, the Northern Eagle is the largest ship in American Seafoods&rsquo; fleet. It is also among the most modern trawler in North America. It has a crew of 140, with 90 working below deck to process as many as 54,000 fish per hour into 160 tons of finished frozen product per day.</p> <h3>Point-of-Catch Processing</h3> <p>Nearly two-thirds of the space below Northern Eagle&rsquo;s main deck is occupied by fish-processing machinery. This includes six processing lines containing 650 meters of conveyors. Each processing line de-heads, guts, fillets, and skins up to 150 fish per minute. The processing lines transform the fish into fillets. After they undergo final inspection, the fillets are packaged and quick-frozen to &ndash;40&deg;.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/hydraulics-through-centuries">Hydraulics through the Centuries</a></p> <p><a href="http://hydraulicspneumatics.com/marine-offshore/noteworthy-keynote-international-workboat-show">A Noteworthy Keynote at the International WorkBoat Show</a></p> <p><a href="http://hydraulicspneumatics.com/marine-offshore/workboat-show-chugs-nola">WorkBoat Show Chugs into NOLA</a></p> </div> <p>Two major challenges faced the designers of the processing line. First, all the processing equipment undergoes frequent washdown from high-velocity jets of seawater. This could threaten reliability and productivity if electric motors were used to drive conveyors unless expensive and bulky enclosures were installed. Plus, the ship itself serves as a ground to Mother Earth, leaving no room for compromise for keeping water out of electric motors.</p> <p>The other major challenge was space. The six conveyor lines in the Northern Eagle run essentially parallel down the length of the ship. Walkways are needed to give crewmembers access to the conveyors and to let them walk from one processing station to another. However, conventional conveyor drives are perpendicular to the motion of the conveyor. Therefore, the motors and gearboxes protrude from the side of the conveyor, which would impede the mobility of crewmembers. Even if parallel-shaft drives were used by mounting them under the conveyor, they would be bulky, have limited access for maintenance, and still hold potential risks inherent to electric motors.&nbsp;</p> <h3>Space Reduction from Hydraulics</h3> <p>A general overview of the Northern Eagle&rsquo;s below-deck is shown in the 3-D cutaway. As can be seen, only narrow passageways can be provided between the six conveyor lines. This is where the innovative use of hydraulics becomes an essential element of the design. Instead of using electromechanical drives, designers chose to use Tech-Roll hydraulically powered conveyor pulleys.</p> <p><img alt="Fig. 2" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Ship%20cutaway_0.jpg" style="width: 595px; height: 328px;" title="Cutaway graphic shows the below-deck features of the Northern Eagle, with processing and freezer storage taking up most of the space. " /></p> <p>Manufactured by Tech-Roll Inc., Blaine, Wash., the motorized pulleys place a hydraulic motor inside the conveyor drive pulley. Doing this takes advantage of otherwise unused space inside the pulley and isolates the motor from the ambient environment. This is especially important for conveyors used in food processing applications, where components must be shielded from caustic washdown solutions.</p> <p>As with any hydraulic motor, the pulley can operate in wet atmospheres where electrical power could pose a hazard. The motor also produces full torque at startup and at all drive speeds. Speed, direction, and torque all can be easily controlled using standard hydraulic valves.</p> <p>The Tech-Roll consists of two main parts: a cylindrical shell and the hydraulic motor itself. The shell is closed at one end and fitted with a pillow block bearing. The other end is open, with the hydraulic motor rigidly mounted to a shaft and an end plate with a bearing assembly. The end plate turns around the shaft. The motor is inserted into the open end of the shell, and the motor&rsquo;s splined shaft mates to a fixed flange inside the shell. The end plate with the bearing assembly closes the open end of the shell.</p> <p><img alt="Fig. 3" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Pulley.jpg" style="width: 595px; height: 321px;" title="Packaged pollock fillets are about to exit a production line and transferred to freezer storage, visible in the background." /></p> <p>The shell rotates around the motor-mount shaft, which is fixed relative to the rotation of the shell. Hydraulic fluid enters and exits the motor through passageways in the shaft. To simplify installation, the fixed shaft is supplied with a manifold housed in a standard flange or pillow block bearing housing.</p> <p>The hydraulic motor is factory-aligned inside the shell, which prevents any side load, which can occur with conventional drives.</p> <p>The weight of the Tech-Roll is centered within the conveyor frame, eliminating distorted structures resulting from heavy side loads. Other than the roller itself, the Tech-Roll has no external moving parts, so safety guards and enclosures do not have to be installed and maintained.</p> <p>Hydraulic motors offer additional advantages inherent to their operation. They do not give off substantial heat, which is especially important for conveyors operating in temperature-controlled environments. Hydraulic motors do not need breakers or other overload protection because excessive load torque simply stalls the motor. The hydraulic system&rsquo;s relief valve is all that&rsquo;s needed, or a torque-limiting valve can be used instead for tension-control and similar applications. Furthermore, much of an electric motor&rsquo;s noise comes from its cooling fan. Because they do not need a cooling fan, hydraulic motors also run quieter&nbsp;than their electric counterparts.</p> <h3>The Need for Speed</h3> <p>The hydraulically powered conveyors on board the Northern Eagle do not necessarily all run at the same speed. Rather, speed is regulated manually through a flow-control valve to match conveyor speed to the pace of the crew working on the particular production line. System pressure maxes out at 1,200 psi, depending on the conveyor speed and the load it is carrying. The conveyors are powered by seven 60-hp hydraulic power units&mdash;one for each line, plus a standby unit.</p> <p>For more information on the Tech-Roll hydraulic motorized pulley, call (888) 946-3929 or <a href="http://www.tech-roll.com" target="_blank">visit the firm&#39;s website</a>.&nbsp;Go to <a href="http://American Seafoods Co" target="_blank">the&nbsp;American Seafoods Co. site</a> for more information about American Seafoods Co. and its fleet. The online version of this article includes an image gallery and a video produced by the Discovery Channel, describing the operation and capabilities of the Northern Eagle.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/floating-fish-factory-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/floating-fish-factory#comments Hydraulic Pumps & Motors Tue, 14 Apr 2015 13:35:00 +0000 31801 at http://hydraulicspneumatics.com A Floating Fish Factory (.PDF Download) http://hydraulicspneumatics.com/datasheet/floating-fish-factory-pdf-download <div class="node-body datasheet-body"><p>American Seafoods Co., Seattle, is the largest supplier of pollock in the world. Mature pollock can grow to 3-ft. long and weigh more than 40 lb., but average 1 to 2-ft. long and weigh &frac12; to 2 lb. The Alaskan variety is widely used...</p> <p><strong>Register or sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.</strong></p> <div class="gatedLogin well"> <div class="contentPadding clearfix"> <h2>Register for Complete Access (Valid Email Required)</h2> <p><p><img src="http://hydraulicspneumatics.com/site-files/hydraulicspneumatics.com/files/uploads/2015/03/HP-Calculate-w-Air.jpg" />By registering on Hydraulics &amp; Pneumatics now, you&#39;ll not only gain access to , you&#39;ll also receive a complimentary copy of <em>Hydraulics &amp; Pneumatics&#39; Measure with Air </em>wallcharts.</p> </p> <div class="gatedLoginButtons gated-register-button"> <div class="button-region"> <a href="/penton_ur/nojs/user/register?source=gated&nid=31831&regmode=1" class="ctools-use-modal btn btn-branded btn-wide ctools-modal-register" title="Register at this site.">Register</a> </div> <div class="loginLinkText"> Already registered? <a href="/penton_ur/nojs/login" class="ctools-use-modal ctools-modal-log_in" title="">Log In</a> here. </div> </div> </div> </div> </div> <div class="og_rss_groups"></div> Gold Tue, 14 Apr 2015 13:31:00 +0000 31831 at http://hydraulicspneumatics.com