Centrifugal Pump Flow Diagram

The rotational energy typically comes from an engine or electric motor.

Centrifugal pump flow diagram. During a bench test the pump is operated at constant speed and the values q and h are determined for the various operating points. The centrifugal pump definition is a pump which can be used for handling huge amount of liquids to provide extremely high flow rates and they have the capability to regulate their flow of liquid rates over a wide range. The shaft passes through the pump casing and out through the stuffing box portion of the casing through which the shaft extends and where seal or packing is placed. For every pressure the pump will only deliver one specific flow rate.

Centrifugal pump is a hydraulic machine which converts mechanical energy into hydraulic energy i e. The relation given above is also applicable when the flow becomes greater than the normal flow. When a centrifugal pump is operating at a constant angular velocity an increase in the system head back pressure on the flowing. Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow.

The impeller is fastened to the shaft. Pressure energy by the use of centrifugal force acting on the fluid. This relationship also called pump performance is illustrated by curves. The momentum produces an increase in pressure or flow at the pump outlet.

Therefore to control the flow of a centrifugal pump simply set the output pressure to the point on the p v diagram that allows the pump to deliver the desired flow rate. Generally these pumps are designed for liquids which have a comparatively low viscosity that transfers like light oil otherwise water. The diagram shows the main parts of the centrifugal pump. What is centrifugal pump.

In centrifugal pumps the delivery head h depends on the flow rate q. Centrifugal pumps are made up of two primary components. The output pressure of the pump is set using a back pressure regulator. The rotating impeller generates velocity and the casing converts velocity into flow.

An impeller and a casing. They are a sub class of dynamic axisymmetric work absorbing turbomachinery. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller. A centrifugal pump is a machine that uses rotation to impart velocity to a liquid it then converts that velocity into flow.

The maximum pump head of a centrifugal pump is mainly determined by the outside diameter of the pump s impeller and the shaft angular velocity speed of the rotating shaft the head will also change as the volumetric flow rate through the pump is increased. In order to develop greater heads or to discharge a high rate a multistage pump is used. On the other hand centrifugal pumps impart momentum to the fluid by rotating impellers that are immersed in the fluid.