Cavitation in cryopumps
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If cavitation occurs in a nitrogen pump with internal compression, what should be the first measure to take? Why adjust it this way? Thank you all
Turn on the drain vent; as long as liquid is visible in the drain, that’s fine. If cavitation is severe, stop the pump and pre-cool it again
What is the best method of adjustment to enable the pump to operate quickly and normally without stopping it? Is turning on the reflux the best method?
“What is the best method of adjustment to enable the pump to operate quickly and normally without stopping it? Is turning on the reflux the best method? It should be.
When setting up a reflux system, it’s necessary to consider compliance with subsequent requirements
The pump is already suffering from cavitation; it can no longer function properly. How can we consider its performance under future operating conditions in such a situation?
To be honest, it’s basically very difficult for nitrogen pumps to suffer from cavitation – the pressure is only 0.5 MPa! If cavitation does occur, switch to the backup pump for operation; after the main pump has been properly degassed, try applying load again. If that still doesn’t work, consider whether the inlet filter is clogged, which may be causing insufficient suction volume!
It depends on the cause; the right solution must be found. I’ve encountered situations where subsequent processing units misused nitrogen, causing cavitation in the pumps. The key is to ensure there is a backup supply of gas – prioritize setting up this backup first. Safety comes first, along with maintaining production