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What Are The Hazards Of Centrifugal Pump Cavitation?

Jul 18, 2017

1, small size, low noise, light weight.

2, multi-stage centrifugal pump are generally used vertical structure, which will greatly reduce the area, and the pump center of gravity in the pump feet, running very smooth, small vibration, good quality, can be used very Long time.

3, can be installed in any part of the pipeline does not need to change the structure of the pipeline, very convenient, if you want to use in the outdoor only need to add a rain cover on the line, unlike the traditional pump also need to build a pump room, And laborious.

4, multi-stage centrifugal pump with high efficiency, and do not need other energy support, is an efficient and energy-efficient machinery and equipment.

5, multi-stage centrifugal pump with a highly efficient energy-saving hydraulic model, with high efficiency and energy saving, wide range of performance, safe and stable operation, low noise, long life, easy installation and maintenance advantages; but at work it has some limitations, The pressure is not more than 0.6MPa, for the delivery temperature of -20 ℃ -105 ℃.

6, can change the pump material, sealed form to achieve the oil, hot water, corrosive media transport.

Has the following hazards:

① centrifugal pump performance decline. Pump flow, indenter and efficiency are reduced. If a large number of bubbles are generated, a gas barrier may occur, forcing the centrifugal pump to stop working.

② produce noise and vibration, affecting the normal working environment of the pump.

③ pump shell and impeller material damage, reducing the pump life.

The reason for the cavitation is that the static pressure near the impeller is lower than a certain value. And cause the static pressure is too low for many reasons, such as the pump installation height exceeds the allowable value, pumping liquid temperature is too high, the suction pipe local resistance is too large and so on. To avoid cavitation, the pressure near the impeller inlet should be managed to be lower than the saturated vapor pressure of the liquid at the delivery temperature. Usually, according to the anti-cavitation performance of the pump, reasonably determine the installation height of the pump is an effective measure to prevent cavitation.