Introduction to the suction height and cavitation phenomenon of centrifugal pump

The cavitation phenomenon of centrifugal pumps often intensifies with the increase of the suction height of the pump, the decrease of atmospheric pressure, the increase of the temperature of the conveyed liquid, and the increase of the pump speed. The higher the vacuum height allowed, the better the cavitation performance of the centrifugal pump. If two centrifugal pumps with the same suction height are used, the higher the pump speed, the better the cavitation performance. Improving the cavitation performance of pumps is one of the important issues for the production and departmental work of pumps. Especially at present, various sectors of the national economy require higher pump head. To increase the head of the pump, it is necessary to increase the pump speed, which can reduce the number of stages, volume, and weight of the pump, thereby improving the technical and economic indicators of the pump. Therefore, studying the cavitation problem of centrifugal pumps and improving their cavitation performance is of great significance