Centrifugal Pumps

What are the benefits of a Centrifugal Pump?

Centrifugal pumps are rotodynamic pumps that make use of a revolving impeller to add to the force and pressure of a fluid. Centrifugal pumps are frequently used to budge liquids all the way through a piping system. The fluid enters the pumps and into the impeller all along or next to the revolving axis and the speed is increased by the impeller. The centrifugal motion forces the liquid to flow radially leading to the exterior to a diffuser or volute chamber (casing). It is from here that the liquid leaves the centrifugal pumps doing all the way down the piping system. Centrifugal pumps are in general used for huge discharges in the course of the smaller heads.

How do centrifugal pumps work?

There are basically two kinds of centrifugal pumps and each works in its own exclusive kind of a way.

  • Single Stage Radial Flow Centrifugal Pumps
  • Multistage Centrifugal Pumps

Single Stage Radial Flow Centrifugal Pumps: Centrifugal pumps work by the exchange of the rotating kinetic energy, characteristically starting at an electric motor or turbine, to an augmented inert fluid pressure. The entire action involved in these kinds of pumps is described by Bernoulli’s principle. The rotary motion of the pumps’ impeller gives rise to kinetic energy in the liquid as it is strained in of the centre of the impeller eye in the centrifugal pumps, being forced outward via the impeller vanes to the edge.

As the fluid in the centrifugal pumps come out of the impeller, the liquid kinetic energy and the velocity in it is transformed to static pressure resulting from the change in the area of the liquid experiencing in the volute section of the pumps. The typical volute shape of the pumps’ casing and the diffuser vanes are responsible for the energy conversion in the centrifugal chamber. This results in amplified pressure on the downstream side of the pump, causing the flow centrifugal chamber.

Types of Centrifugal Pump

Centrifugal pump with multi stage: Pumps of this variety include two or more impellers are called a multistage centrifugal pump. Centrifugal impellers may be built up on the very same shaft or on dissimilar shafts.

Pumps of this kind create an advanced pressure discharging a larger quality of liquid. Pumps with high heads have connected series of impellers. Pumps where higher centrifugal pressure head is to be created, the impellers have to be mounted on same shaft resulting in larger discharge of liquid.

Centrifugal pump that is large is in general more efficient than the medium sized one. But regular testing is required to keep up the centrifugal speed for better performance. Hence the pump needs to be cautiously designed, set up and observed, so that it doesn’t become inefficient by any chance, this way even the excess loss of energy can be prohibited thereby determining on the element of efficiency.