1. When the cavitation liquid is at a certain temperature, when the pressure is reduced to the vaporization pressure at this temperature, the liquid will produce vapor bubbles. This phenomenon of generating bubbles is called cavitation.
2. Cavitation collapses the bubbles produced during cavitation, and when they flow to a high pressure, their volume decreases and collapses. This phenomenon of bubbles disappearing in the liquid due to pressure rise is called cavitation collapse.
3. Causes and hazards of cavitation. When the shock absorber is in operation, if for some reason, the absolute pressure of the pumped liquid drops to the vaporization pressure of the liquid at the current temperature, the liquid will be there. It starts to vaporize, produces a lot of steam, and forms bubbles. When the liquid containing a lot of bubbles passes through the high-pressure zone in the impeller, the high-pressure liquid around the bubbles causes the bubbles to shrink sharply and even burst. While the bubbles are condensed and ruptured, the liquid particles fill the cavities at a very high speed, generating a strong water hammer at this moment, and hitting the metal surface with a high impact frequency. The impact stress can reach hundreds to thousands of atmospheres. , The impact frequency can reach tens of thousands of times per second, and the wall thickness will be broken down in severe cases.
4. The cavitation process produces bubbles in the shock absorber and the bursting of bubbles causes damage to the flow-through components is the cavitation process in the shock absorber.