(1) Steaming phenomenon

At a certain temperature, the pressure of the pump in the import of the pump is lower than the vaporization pressure (ie saturated vapor pressure) at the temperature at the temperature of the pump. , The foam is ruptured, and the surrounding liquid quickly fills the original steam foam empty acupoint to produce hydraulic impact. The production, development and rupture of this type of steam bubbles are called steam erosion.

(2) The parts of the occurrence of steam erosion and the destruction part of the corrosion

The part where the occurrence of steam is located at the impeller inlet, or the liquid is flowing at a high speed. The corrosive part is often located at the impeller exit or the exit of the water room.

(3) Steaming harmfulness

① When the foam is ruptured, the liquid mass point impacts each other, generates noise and unit vibration of 600 to 25000Hz, and the two incentives can cause the pump to cause a strong vibration, that is, the steam erosion resonance phenomenon.

② Estimulation and corrosion destruction of overcurrent parts.

③ The performance of the pump suddenly decreased.