Centrifugal Pump Work Principle

XI'AN, China - July 16, 2013 - PRLog -- A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure of a fluid. Centrifugal pumps are commonly used to move liquids through a piping system. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from where it exits into the downstream piping system. Centrifugal pumps are used for large discharge through smaller heads.

How it works

Like most pumps, a centrifugal pumps converts mechanical energy from a motor to energy of a moving fluid; some of the energy goes into kinetic energy of fluid motion, and some into potential energy, represented by a fluid pressure or by lifting the fluid against gravity to a higher level.

The transfer of energy from the mechanical rotation of the impeller to the motion and pressure of the fluid is usually described in terms of centrifugal force, especially in older sources written before the modern concept of centrifugal force as a fictitious force in a rotating reference frame was well articulated. The concept of centrifugal force is not actually required to describe the action of the centrifugal pump. In the modern centrifugal pump, most of the energy conversion is due to the outward force that curved impeller blades impart on the fluid. Invariably, some of the energy also pushes the fluid into a circular motion, and this circular motion can also convey some energy and increase the pressure at the outlet.

Pumps for solids control

An oilfield solids control system needs many centrifugal pumps to sit on or in mud tanks. The types of centrifugal pumps used are sand pumps, submersible slurry pumps, shear pumps, and charging pumps. They are defined for their different functions, but their working principle is the same.

There is Centrifugal Pump (also called Sand Pump)、Shear Pump、Submersible Slurry Pump、Screw Pump(also called Feed Pump, Mono Pump) made in Kosun. Centrifugal pump is used for transferring drilling mud; as feeding pump for desander, desilter; as mixing pump for Jet Mud Mixer; as trip pump, and as supercharging pump for drilling mud pump. Shear Pump is used for transporting and shearing the pill for making new mud, and reduce the time of making new mud. Submersible Slurry Pump and Screw Pump are the pumps for feeding the centrifuge. The advantage of the Screw Pump is not crashing the bigger particles in the mud fluids，adjustable rotary speed and mechanical seal.