Boiler feed pump and the difference between ordinary pumps
Pump Cavitation: When the liquid in the pump runner flows to a pressure equal to or lower than the corresponding vapor pressure, the liquid will vaporize to produce a large number of bubbles. When the bubble flows to the high pressure zone, it quickly condenses under high pressure
The pulsating force is accompanied by severe noise and severe vibrations.
When the pump is in the process of cavitation, from the pump inlet (low pressure area) to the outlet (high pressure area), a large number of bubbles will continue to produce, develop, coagulate, rupture caused by repeated high-speed impact and great
Rupture, the flow surface material to form a great, repeated impact, resulting in fatigue erosion or erosion, that is, pump cavitation.
Boiler feed pump must be high head (ie high pressure pump) pressure can not be less than 1.5 times the rated pressure of the boiler. Flow is not too much, not less than the rated evaporation of the boiler on the line. Water temperature as long as the pump within the scope of the pump flow and
