Liquid ring vacuum pump
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This post was last edited by 卐卍 on 2016-12-17 at 14:54. What happens if the inlet valve is closed for an extended period of time while a liquid ring vacuum pump is operating normally?
The same is true for centrifugal pumps when the inlet valve is not opened for an extended period of time.
Shouldn’t there be a difference here? It seems that the inlet valve cannot be closed while the centrifugal pump is running ； When the suction pressure at the inlet of a liquid ring pump is reduced to its limit, does it mean the pump is running idle, and has this no effect on the pump?
As the vacuum level continues to drop, the temperature of the equipment increases. 1. The circulating liquid may liquefy, leading to cavitation； 2. The rotor expands due to heat, which can cause friction with the pump body and lead to the pump stopping operation.
There are no problems in short periods of time; however, the temperature of the liquid rises over longer periods