Centrifugal pump mainly used to be as power assistant equipment for circulating solids control of oilfield drill. Its function is provide drilling mud with a certain capacity and pressure for desander, desilter, mud mixing pump, etc. to ensure equipments can work effectively. We must clearly understand operation principle of centrifugal pump.
Principle of operation
Fluid is directed to the impeller eye and is forced into a circular movement by the rotation of the impeller vanes. As a result of this rotation, the impeller vanes transfer mechanical work to the fluid in the impeller channel, which is formed by the impeller vanes. The fluid is then pressed out of the impeller by means of centrifugal force and finally leaves the impeller channel with increased pressure and velocity. The velocity of fluid is also partly converted into pressure by the pump casing before it leaves the pump through the outlet.
The principle of the multi-stage centrifugal pump is the same as the conventional centrifugal pump. The pump consists, however, of several impellers (several stages) which increase the pressure from one stage to another but flow rate is unchanged. The multi-stage centrifugal pump operates as if several conventional centrifugal pumps are connected in series.
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