The damage of water pump cavitation

The damage of water pump cavitation

The cavitation of water pump is a kind of complicated physics, chemical phenomenon, the occurrence and development of cavitation, can cause the following damage to the pump.

(1) Water pump performance deterioration

In the process of produce cavitation, because the water contains a lot of bubble, destroy the rule of the normal flow of the water, changing the flow area and flow direction of the flow passage, and energy exchange between the impeller and the flow stability is destroyed, energy loss increased.

(2) The flow component is damaged by the denudation

When the bubble is after the water flow to high, due to the increased water pressure of bubble around, make bubble burst quickly, the water flow around the bubble particle high ground to the center of bubble shock, water particle smashed into each other, have strong water hammer.

(3) Generate noise and vibration

In the process of continuous formation and collapse of the bubble, a strong pulse pressure can be generated in the pump due to the impact of the particles in the flow and the impact of the surface of the overflow parts.As a result, the pump produces a high frequency of noise and vibration when cavitation occurs.Vibration can damage the parts and seats of the unit.In particular, the frequency of cavitation vibration is close to the frequency of vibration of the unit, which can lead to resonance phenomenon and even serious consequences.