Most people may not understand the “stage”of multistage centrifugal pump. Now i will share the meaning with you.
In multistage centrifugal pump,the “stage” is composed of impeller which with deflector (such as guide wheel annular or volute casing pump).
Multistage centrifugal stage is typically characterized by: a power transfer from the shaft to the carriage of the media. As long as there are no side effects of feed conditions or effective cavitation margin value. With these two values can be drawn level efficiency. Multistage centrifugal stage efficiency is by all strive to achieve the level of constant value as high as possible.
Multistage centrifugal pump to determine order of magnitude, to ensure that each stage (the impeller configuration) have the appropriate torque ratio. Here, to a single impeller, the most important thing is not multi-stage pump specific speed, but the speed which related to stage.
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