This was the basis for the api standard 610, sixth and seventh editions, proscribing their use since january, 1981. The overhung impeller segment led the market in 2016. This pump is always of an overhung type and typically has lower npshr because the liquid feeds directly into the impeller eye. Flowserve overhung pumps comply either with iso, asme or api standards. The impeller is mounted on the end of a shaft which is overhung from its bearing supports. The design features include an internal volute casing and a backtoback impeller configuration, simplifying maintenance, reducing downtime and guaranteeing pump reliability. Keeping water and moisture out of overhung pumps is a problem. Overhung impeller pumps are widely used in various applications including residential, commercial buildings, and industrial settings for light applications. Other literature on centrifugal pumps rp downloads center. Centrifugal pumps for petroleum, petrochemical and natural. Permits the removal of hydraulic motors for servicing. Gri pumps a gormanrupp company magnetically coupled centrifugal pump brushless dc motor, the intg1 series magnetically coupled centrifugal pumps incorporate the components into a compact, lightweight design, eliminating motor bearings and leaving the impeller assembly as the only moving part.
Safety and reliability we provide engineered solutions with true conformance to the latest api specifications including the stringent emissions containment per api 682. Download fulltext pdf a full spectrum analysis methodology applied to an anisotropic overhung rotor article pdf available january 2016 with 155 reads. The pump is designed for a specific flow and pressure at a specific rpm. Installation operation and maintenance manual iom hydraulic coverage. Api 610 11th edition iso 709 2nd edition api oh2 overhung, single stage, radially split. The impeller is mounted on the end of a shaft which is.
Pumpout vanes on the rear shroud also reduce thrust. In order to obtain the desired component life it is necessary to properly size the ola for the application. The crp line of process pumps features 33 hydraulic combinations and is. We appreciate the opportunity to provide you with this assessment.
Below are excerpts from the paper titled, centrifugal compressor applicationsupstream and midstream presented by peter c. A centrifugal pump whose impeller is mounted on the end of a shaft that overhangs its bearings explanation of overhung impeller pump. Components of centrifugal compressors in oil and gas. The hpx pump is the workhorse of the oil and gas and hydrocarbon processing industries, boasting unequaled versatility, reliability and safety. This pump can either be an overhung type or betweenbearing type but is always a radially split case pump. Standard for the installation of stationary pumps for fire. Centrifugal pumps single stage overhung oh1 single stage.
Fewer parts promote long life, quiet operation, and low power consumption. As in overhung centreline mounted pump only the foot of the pump remain in contact with the base plate and the rest of the portion of the pump is hung in the air. Overhung, endsuction process pump flowserve corporation. Wr300 allows the pump user to increase pump efficiency by running tighter wear ring clearances while decreasing potential. The purpose of this article is to give you a explanation about the pump configurations within the api 610. Basics concepts of operation, maintenance, and troubleshooting, part i. The sce is a heavyduty, single stage, overhung process pump, designed and built in accordance with the latest edition of api 610 oh2. The decision has to be made about how to mount the rotor in the balancing machine. Single stage overhung oh2 horizontal process pump single stage. Horizontal overhung centrifugal pumps, single stage, in. For applications in confined spaces, the ohv provides much of the ohh hydraulic coverage. Pump models are divided into five sections, beginning with overhung pumps and continuing through specialty designs. Sulzer ohv overhung vertical inline pumps sulzer ohv inline pumps are designed for pumping applications covering a wide variety of produced or process fluids such as produced water booster, crude oil booster, propane transfer, reflux, or gas oil. Numerous sizes, hydraulics and material combinations are particularly well suited for.
Water pump gasket kit 7528 water pump gasket kit 7527 water pump gasket kit 7524 water pump gasket kit 7523. Swp selfpriming pump brochure en 5 10 15 20 25 30 50 100 we are a worldwide company dedicated to the design, manufacture, sales and service of pumping technology. This is accomplished by the use of a canned motor or a magnetic coupling. These vanes pump the high pressure liquid back into the main flow, reducing the pressure acting on the back shroud. Its purpose is to convert energy of a prime mover a electric motor or turbine first. Overhung pumps cpxv iso and api chemical sump pump.
Petrochemical, coal, fiber, pulp and paper, food and beverage, pharmaceutical fats and other applications. Centrifugal pumps for petroleum, petrochemical and natural gas industries 1 scope this international standard specifies requirements for centrifugal pumps, including pumps running in reverse as hydraulic power recovery turbines, for use in petroleum, petrochemical and gas industry process services. Pdf a full spectrum analysis methodology applied to an. As the pump performs its duty over time, and fluid passes through the pump, erosion and abrasive action will cause the close tolerance parts to wear. Rotorstator rubbing contact in an overhung rotordynamic system. Goulds model 3700 api 610 oh2 iso 709 centerlined mounted process pump designed for optimum reliability. Split flow pumps api standard 610 and overhung pumps. Overhung load kg lda overhung load capacity 100 500 1500 2000 2500 2800 a. This enables the pump to start dry and reprime itself without manually adding water. One solution is to fabricate a mandrel to balance the fan blade between the machine. Each pump is identified by its formal designation and accompanied by a fullcolor cutaway illustration. The erpn pump is of horizontal, end suctiontop discharge, overhung centerline mounted.
Truflo now offers low flow and high flow sizes in our dap series horizontal overhung pump ansi b73. L10 life 3000 hrs f 600 500 400 300 200 100 with reference to load at shaft location c b a mount holes 4 places 38 unc 15mm deep 03827 2. Shaft rotates in grease lubricated anti friction bearings. These parts may be piston rings, reciprocating rod seals, a flexing. Overhung pumps single and twostage betweenbearing pumps. Reduces premature motor or pump failure due to overhung loads axial and radial on your motor or pump shaft. Explanation about the pump configurations within the api. The design is based on the double casing bb5 pump design and complies with api 610.
The diagram shows the main parts of the centrifugal pump. For a rotor system with bearings and stepdiameter shaft in the oxygen pump of an engine, the contact. Centrifugal compressors are used in a large number of different compression applications in oil and gas. Different configurations guarantee reliable and efficient pumping processes.
Pump data sheets specify required drive speed usually 1500 rpm 50 hz or 18001200 60 hz corresponding to the common standard speeds of a threephase induction motor. More than 17,000 oh units are installed worldwide for various applications in the petroleum, petrochemical and natural gas industries. The api is an abbreviation for american petroleum institute. Pump data sheets must be checked at this point to confirm that proper pump case material design, bearings, seals, and pump flushing arrangements are provided as specified.
Rasmussen and rainer kurz at the 44th turbomachinery and 31st pump symposia houston, texas in september 2015. The symbols shown at right are used to identify each pumps. Hydraulic pumpmotor division hydraulic flow is developed as the pump rotating group is driven by a prime mover hydraulic pump basics fluid is forced out of pump at the pump outlet a partial vacuum is created at the pump inlet and atmospheric pressure forces fluid into pump from the reservoir. Terex ts24d overhung scraper parts book pdf contains help for troubleshooting and will support you how to fix your problems immediately. Non coupling side axial bearing placement procedure. Overhung impeller pump article about overhung impeller. No other pump company in the world has the depth or breadth of expertise in the successful application of preengineered, engineered and special purpose pumps and. Manufacturer of overhung pumps cpxv iso and api chemical sump pump, polychem vgrp engineered polymer overhung sump pump, ds overhung industrial process pump and fline end suction multistage industrial process pumps offered by flow serve india controls private limited, coimbatore, tamil nadu. First of all it was evaluated that there should be no extra vibration on the other overhung parts of the pump and then. For chemical industry, industrial, general service, power plants and other applications. Review different pump types commonly used understand the difference between centrifugal pumps and positive displacement pumps understand the working principle of the tuthill. Updates on replacement brass oil rings in overhung pumps with alternate material jjpellin mechanical 6 nov 14 12.
Perfect for all diy persons your doityourself specialist for service manuals, workshop manuals, factory manuals, owner manuals, spare parts catalog and user manuals. Maximum service life is achieved in clean, lubricated andor moist environments. Noncoupling side axial bearing placement procedure. The pump selector will guide you step by step to the find the pump that meets your requirements. Centrifugal pump market report by stage, end user, and. It is common knowledge that twostage overhung pumps have a tarnished reputation for reliability. Using seals using flinger rings is usually the most effective way to protect bearings from moisture. The fan blade may be received mounted on the shaft, or without any shaft. A pump is a device for lifting, transferring, or moving fluids by suction or pressure from one position to another. The operating manual of any centrifugal pump often starts with a general.
Overhung, endsuction process pump iso 709api 610 oh2 experience in motion pump supplier to the world flowserve is the driving force in the global industrial pump marketplace. The report segments the centrifugal pump market, on the basis of type, into overhung impeller, vertically suspended, and between bearings. The result is a safe and rugged overhung api process pump designed for a 20year life. The centrifugal pump is a type of pump that uses the kinetic energy of a rotating impeller to impart motion to the fluid, see.
Centrifugal pumps single stage overhung oh1 horizontal process pump. A centrifugal pump is one of the simplest pieces of equipment in any process plant. Itt goulds pumps is among the most widely recognized and respected brands in the. Applicable engineering standards are listed along with performance characteristics and key features. Updates on replacement brass oil rings in overhung pumps.