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generally, centrifugal pumps are high discharge, low pressure generating pumps. to increase the pressure generated it is setup in stages wherein pressure increases from one stage to an other.mostly seen in daily life applications such as pumps for water tankers. even emergency fire fighter vehicles use these type of pumps. these are called dynamic or non-positive displacement pumps.

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13y ago

Centrifugal pump is a kind of machinery used for pumping water through the centrifugal movement, which is composed of pump casing, impeller, shaft, pump frame and other components.

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Q: What is use of centrifugal pump?
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Why centrifugal pump is not called a positive displacement type of pump?

A positive displacement pump causes a fluid to move by trapping a fixed amount of it then forcing (displacing) that trapped volume into the discharge pipe. Centrifugal pumps impart pressure to the fluid, to cause a pressure differential and cause flow, but even if the outlet is sealed, the pump can continue to run because it hasn't trapped the fluid. When no flow is occurring, a centrifugal pump acts like a propeller spinning in the water. If flow is stopped on a line that a positive displacement pump is supplying flow to, the pump is forced to stop since the trapped fluid prevents it from moving any more fluid.


What causes radial thrust in a centrifugal pump?

When a centrifugal pump operates at its best efficiency point (BEP), the flow angles match with the impeller vane angles. At the BEP, the flow velocity in the volute is uniform around the volute (i.e., there is not acceleration of the fluid in the volute). Therefore, the pressure around the volute is uniform. The uniform pressure around the circumference results in a net zero radial force on the impeller (or the shaft). Note this is theoretical. In practice even at BEP, there is a small radial load because the pressure is not uniform. If the pump is operated away from the BEP, the flow velocities in the volute are non-uniform which results in a non-uniform pressure field and a net radial load (can be obtained by integrating the pressure around the circumference of the volute or the impeller).


What is the function of an eccentric pipe reducer in the suction side of a pump?

if we use concentric reducer at suction of pipe ,due to high turbulence flow of fluid ,some vapour pressure generate which generate bad effects on impeller of pump ,which decrease pump efficiency , so to avoid this problem the eccentric reducer's use in pump suction


What is the Use of Balancing line in Boiler feed pump?

Boiler feed pump's suction pressure be aprox. 15Kg/cm2 and discharge pressure be 180Kg/cm2. So the balancing line balance the pressure and protect the boiler feed pump. my quastion is that what is the working principal of balancing leak off


What is the NAICS Code for Fluid Power Pump and Motor Manufacturing?

NAICS 333996 applies to Fluid Power Pump and Motor Manufacturing.

Related questions

What is the use of centrifugal pump in the ship?

to pump out liquid or gas in higher quantity


Can someone use centrifugal pump as a blower?

no its highly impossible


What different between centrifugal pumps and multi pumps?

A centrifugal pump works by using centrifugal force. A multi pump is short for a multistage centrifugal pump with two or more impellers.


Is turbine pump is a centrifugal pump?

yes that is centrifugal pump because the turbine pump creates a vacuum pressure on pipe.


About centrifugal pump?

What about it?


What is volute centrifual pump?

The volute of a centrifugal pump is the tank that holds the liquid being pumped. The centrifugal pump is a type of pump that uses a swirling motion to pump liquid.


Why do you start the centrifugal pump with the discharge valve shut?

centrifugal pump should be fill with liquid to built discharge pressur.chemist.yasser.Naguib


If the outlet valve for both centrifugal and reciprocating pump is closed which pump is damage first and why?

The reciprocating pump is damaged first. The closed outlet has no bad affect to the centrifugal pump.


How does coolant circulate in the cooling system?

Generally thru the use of a belt driven centrifugal pump


What is the difference between volute centrifugal pump and turbine centrifugal pump?

voloute convord the pressure into volicity and the mixtur of propallere and impeller is called turbine pump


Why the centrifugal pump is called high discharge pump?

for a simple reason because it has high discharge than any other available pump. the centrifugal pump uses the centrifugal force to push out the fluid centrifugal force = (mass *velocity2)/radius. hence centrifugal force is directly proportional to the square of the velocity, in this case being the velocity of the fluid. power provided to pump proportional to the force exerted by the impeller.hence higher the power results in higher centrifugal force implying square of the velocity of the fluid. higher the velocity of the fluid higher the discharge of the pump.


Why is a centrifugal pumper equipped with a positive displacement pump in conjunction with the main pump?

Because the centrifugal pump cannot pump air due to its loose tolerances, the positive displacement pump is needed to create the vacuum.