It can also be used to pump a slurry of sand and water or other gritty solutions. A turbinedriven pump is a centrifugal pump driven by a turbine see type of pump. Low level monitoring of lube oil reservoir for turbine driven pumps customer refinery located in north america challenge this refinery was having problems with its turbine driven pumps. Reason for using turbo driven is law of conservation of energy ie energy can be neither be created nor b. The function of a pat is comparable to that of any turbine, to convert kinetic and pressure energy of the fluid into mechanical energy of the runner. Steam driven boiler feed pumps for lakvijaya power station, sri lanka by b. A performance prediction method for pumps as turbines pat. The real values of critical speeds should be measured at. Bfp is a pump which is used to supply water feed water from deaerator to boiler drum. The final report should contain a complete specification of.
Turbine pump pump 2 fan selectable fan fan blades fan blades 2 triple fan blades axial flow fan turbine driver doubleflow turbine motor driven turbine ejector spray motor iso screw pump iso reciprocating piston pump iso positive displacement pump iso progressive pump. Nuclear servicesengineering services auxiliary feedwater. At times during operation, the pump bearings were running hot and damage was being caused to the primary and secondary pump seals. An alternative to the traditional cylinder pump is the airlift pump. The heat rate gain on turbine drive has also been considered in their study. Turbine type lineshaft pumps here refer only to diffusertype centrifugal pumps lineshaft driven. Vertical turbine pumps are often staged that is, designed with more than one impeller. Hayward tyler combines its 40 years of experience in engineering and delivering pumps for nuclear applications with coffins 90 years of development of steam turbine driven pumps. The total shaft output of the pump turbine amounts to 127 kw. They are also referred to as vortex, periphery, or regenerative pumps. Pick pumps to operate efficiently operate at conditions. In hydraulic turbine driven pump systems, a downhole hydraulic turbine receives its energy by means of a fluid, usually oil or treated water. Energy efficiency considerations in pumps and pump stations. With motor driven units be sure the voltage and frequency on the motor.
Abstract the wide use in power plants of feed water pumps leads to turbines replacing electric motors. Pdf turbine driven pump cfd modelling and simulation a. Avoidance of problems reflects true application engineering, as well as proper design. Turbine driven pumps have to be above ground while the pump is submerged. The compressor stations will be designed for a flow capacity of fifty million standard cubic feet. To complete an engineering design for the proposed system. Automatic startup of steam turbine driven lube oil pump. This service generally calls for a backpressure noncondensing steam turbine. Redundancy is provided by utilizing two pumping systems, two different sources of power for the pumps, and two sources of water supply to the pumps. Turbine pumps are special types of centrifugal pumps which use turbine like impellers with radially oriented teeth to move fluid. Hydraulic turbine driven submersible pumps hsps offer a simple and robust solution for well or seabed boosting.
Therefore, the turbine drive may become more feasible as larger u. Above 600 rpm rotor relative vibrations should be monitored. The bai hassan project involves the installation of three 3 solar gas turbine driven dual tandem centrifugal gas compressors at three 3 new gas compressor stations, ab4, ab5 and ab6 near the bai hassan oil field in iraq. Turbine pumps dwt deep well turbine borehole pumps quick view.
This case history describes the analysis of one such event, when a pump destruction and subsequent fire were caused by a failure of the turbine speed control and. This technology makes it feasible for cities, farmers, resort managers, industrial plants and building managers to consider hydro turbines in their plant power needs. Both feed water pumps are driven by the short and light weight curtis wheel steam turbine 1, 2. The major components of the afw system are cst 12, two turbine driven afw pumps, one motor driven afw pump, eight afw blocking valves, four afw flow. Steam turbinedriven centrifugal pumps fire engineering. Wanasinghe approved main kth supervisor and examiner prof. However, one question arise during our hazop, that the event of maintenance of the steam turbine driven pump, the motor driven pump will be online. Vt pumps dont need priming as their impellers stay submerged in water ate all times. This turbine pump set can be retrofitted or can completely replace existing turbine driven pump sets in nuclear power plants worldwide. Introduction pumps and turbines appear many places in hydraulics and other civil and environmental engineering applications. Consider a fan blade driven at constant angular velocity by the. Abstract the wide use in power plants of feed water pumps leads to turbines. Performance analysis of a wind turbine driven swash plate pump for large scale offshore applications. Master of science thesis egi 2010 steam driven boiler feed pumps for lakvijaya power station, sri lanka b.
A pump as turbine or pat, otherwise known as a pump in reverse, is an unconventional type of reaction water turbine, which behaves in a similar manner to that of a francis turbine. This report documents an analysis of the performance of safetyrelated turbine driven pump assemblies turbine driver, pump, and governor subcomponents used in the pressurized water reactor pwr auxiliary feedwater afw system and in the boiling water reactor bwr reactor core isolation cooling rcic and high pressure. Economic comparison of steam turbine drives with electric. John yao tsou yu,, thesis submitted graduatt faculty of the. Refinery improves operation of critical turbine pumps with. An economic analysis of a turbinedriven feed water pump. The modular construction assures complete flexibility in selecting a pump.
Reverserunning centrifugal pumps also called pumps as turbines or pat are a solution for generating and recovering power in small and. They are commonly commercialized as composite pump and. Consider steam turbine drives for rotating equipment steam turbines are well suited as prime movers for driving boiler feedwater pumps, forced or induceddraft fans, blowers, air compressors, and other rotating equipment. The hsp was specifically designed to provide maximum. The flow rate of variable stroke windpump can be increased two times, compared to fixed stroke windpumps at the same wind speed. What is the difference between a submersible turbine pump and a submersible pump.
Consider steam turbine drives for rotating equipment. Design of a pump microhydro system design of a pumpasturbine. This article will discuss the basic causes of thrust, how thrust can be. This compact package lends itself to quick steam turbines for industrial applications ge power systems ger3706d 2 20 mw 335 mw 260 mw up to 16,000 rpm 335 mw direct drive stg geared stg feed pump drives mechanical drive units. Pump as turbine technology and a mechanical connection between the turbine and currently installed pumps. City water works plants recently constructed show a decided drift towards the steam turbine driven centrifugal pump. Feed water pumps take water suction from the highest point in the engine room, from the deaerator which acts as.
The turbines are designed for stand pipe, sprinkler, chemical mitigation and hydrant systems. Each additional impeller increases the amount of head the pump can produce while the flow remains unchanged. Important this instruction book should be used as a guide only as pump installation should only be carried out by quali ed and experienced. The turbine may be used to drive a pump, a generator, or other powerrequiring device. In thermodynamic efficiency alone, the steam turbine and centrifugal pump. When a turbine uses hydraulic pressure, the pump produces hydraulic pressure, so why use the word turbine in turbine pump when this produces hydraulic pressure. Literature curves videos turbine pumps vit short set lineshaft turbine pumps quick view. It includes flow cycle, interlock and protection of tdbfp, oil system for tdbfp sealing cooling arrangement.
Small video on turbine driven boiler feed water pump. Turbine pumps xylem applied water systems united states. The primary purpose of this work is to design and investigate the optimum performance of a turbine driven centrifugal pump for small scale irrigation using computational fluid dynamics modelling. In its most basic form this pump has no moving parts, other than an air compressor driven by the windmill. Turbine overspeed can easily destroy the driven equipment. For example, if a singlestage turbine one with only one impeller is designed to produce 1,000 gallons per minute gpm at 100 feet total.
Determine the engineering design parameters of the selected configuration. Pdf the primary purpose of this work is to design and investigate the optimum performance of a turbine driven centrifugal pump for small. Fundamentals of fluid mechanics chapter 12 pumps and turbines. These pumps combine the high discharge pressures of positive displacement or multistage. Then after maintenance, the steam turbine driven pump will be the standby pump. From the information that you provided, it would appear that the turbine driven pumps are operating at a lower speed than the motor driven pumps. Turbine pumps are centrifugal in nature but have some characteristics of positive. Both feed water pumps are driven by the short and light weight. The armstrong vertical turbine vt fire pumps are the only pump type allowed to draw water from belowgrade sources. The system is categorized as seismic class i and is designed to. Most nuclear electric generating units in the united states use turbine driven pumps in a safety related function as a driving force to supply cooling water to selected equipment reactor vessels or. Ac fire pump offers vertical turbine fire pumps with spacesaving designs. Unlike centrifugal designs, vertical turbine fire pumps can be used with water supply levels that are below the pump suction.
Westinghouse and clydeunion pumps are working together to customize their existing, proven twl turbine pump set in order to extend sbo coping duration beyond current capabilities. The pump is the device which does the work on the fluid in order to get it to a higher energy or entropy state. Pumps use mechanical energy to transfer these fluids. Ger3706d steam turbines for industrial applications.
Windpoered water pumping systems for livestock watering. Pdf performance analysis of a wind turbine driven swash. For a turbine with a turbine driven boiler feed pump exhausting to the main condenser, the bfptboiler feed pump turbine will operate at an exhaust pressure 0. Pump and turbine mode curves of various ksb centrifugal pumps. The pumps are used in industrial and commercial applications where low. An example is the pump turbine operating in the waste water system of a german paper mill. Consider steam turbine drives for rotating equipment energy.
Bfpt expansion efficiencies will vary with load as follows. Turbine pumps description dayton close coupled turbine pumps are designed to handle liquids with entrained air, producing pressures up to 170 psi without vapor locking. Hga greater than the exhaust pressure of the main turbine. What is the difference between a turbine and a pump. Download the pdf version of regenerative turbine pump little pump big head. The main lube oil pump is a steam turbine driven and an auxiliary pump that is motor driven. Install a pressure gauge on the pumps discharge, observe the manufacturers pressure limits and youll increase the pumps life. The airlift pump is a type of deepwell pump, sometimes used to remove water from mines. Design of a pump asturbine microhydro system for an. Do not restrict or shut o the discharge of the pump. Pump and turbine theory energy and power pump selection pump pipe networks use of pipe network analysis program epanet2. A piston pump has a very light suction phase, but the upstroke is heavy and puts a big backtorque on a starting rotor when the crank is horizontal and ascending. Energy efficiency considerations in pumps and pump stations jeff foray, p. One the threshold is exceeded, automatic trip of turbine takes place.
717 937 427 606 26 974 1138 1420 1502 129 454 591 1283 153 709 335 51 1220 261 529 903 455 495 690 1286 502 598 891 97 894