如果在离心泵的叶轮入口处由于液流局部速度过大而出现负大气压区,而且该负压区的压力低于被抽送液体的饱和蒸汽压时,液体就会产生蒸汽化。流体将汽泡带入高压区并在该区中破裂。汽泡破裂时会产生极高的局部压力峰值,从而有可能导致设备的损坏。在这种情况下,如果使用合适的检测仪器,就可以通 If the negative partial pressure zone appears at the inlet of the impeller of the centrifugal pump due to excessive flow velocity and the pressure in the negative pressure zone is lower than the saturated vapor pressure of the liquid being pumped, the liquid is vaporized. The fluid brings bubbles into the high pressure zone and breaks in this zone. Bubble rupture will have a very high local pressure peaks, which may result in equipment damage. In this case, if the use of suitable testing equipment, it can be passed