Vibration in a Multistage Centrifugal Pump under Varied Conditions

Table 1

Position of each monitoring point.

Channel number	Position
CH1	Pump inlet pipe
CH2	Inlet of the first-stage impeller
CH3	Outlet of the first-stage impeller outlet
CH4	Outlet of the second-stage impeller outlet
CH5	Outlet of the third-stage impeller outlet
CH6	Outlet of the fourth-stage impeller outlet
CH7	Pump outlet cavity
CH8	Pump outlet pipe