Centrifugal Pumps
Pumps are used to move liquids from one place to another by increasing the mechanical energy of the liquid. The energy can be used to raise the liquid to a higher elevation or to increase its velocity or pressure. In a centrifugal pump this is accomplished by rotating an impeller which creates centrifugal force that transfers energy to the liquid. This module focuses on pumping principles and operation guidelines for typical centrifugal pumps.
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Course Details
Learning Objectives
Describe how a centrifugal pump works Identify and describe typical centrifugal pump types Describe major centrifugal pump components Describe how to correctly start a centrifugal pump Describe cavitation Describe operation guidelines to maintain efficient operation of centrifugal pumps
Specs
Frequently Asked Questions
What are common centrifugal pump types?
What type of pump should I use?
What is head?
What is cavitation?
What causes cavitation?
What is best way to control flow from a centrifugal pump?
Sample Video Transcript
A centrifugal pump consists of a rotating impeller mounted on a shaft inside a stationary casing. An electric motor, or some other driver, is used to rotate the impeller at a high speed. As the impeller rotates, centrifugal force pushes liquid outward from the center, or eye, of the impeller. This increases the liquid velocity and creates a low pressure zone at the eye of the impeller, which allows more liquid to flow into the pump through the suction inlet. Vanes on the impeller help direct the liquid to the outer edge of the impeller and into a gradually expanding channel, called the volute which collects the liquid and directs it to the discharge port.
