Multistage centrifugal pump impeller is agitated by rotation of the centrifugal force generated pressure fluid , transmission fluid . In the selection of multi- stage centrifugal pumps , the use and performance of the pump to determine and select the pump . This choice must first select a pump from the beginning of the type and form , then choose what principles pump it? On what basis is it?
First, the pump selection principle
A multi -stage centrifugal pump with a high speed, small size, light weight, high efficiency , large flow , simple structure, no pulse infusion , stable performance, easy operation and maintenance and convenient.
2 , so that the performance of the selected pump type and meet the requirements of the device flow, head, pressure, temperature, flow cavitation , suction and other process parameters.
3 , the mechanical aspects of high reliability, low noise , small vibration
4 , the economy should be taken into account the total cost of the minimum equipment costs, operating costs, maintenance costs and management fees .
Therefore, except in the following circumstances, the choice should be as multi- stage centrifugal pumps :
1, there are measurement requirements , the selection of metering pumps
2 , head demanding, traffic is very small and not suitable for low flow high head multi- stage centrifugal pumps can be used , the choice of reciprocating pumps can also be used as pump cavitation vortex less demanding .