Liquid nitrogen pump
Thread Content
Atmospheric pressure liquid nitrogen storage tank, with a pump used to pump the liquid nitrogen into the vaporizer for vaporization. Is it necessary to have a gas line from the liquid nitrogen storage tank to the inlet pipe of the liquid nitrogen pump? I saw someone draw a return line connected to the pump outlet and leading to the storage tank; it’s really confusing! Is there anyone skilled enough to answer this!
If you first figure out why reflux is needed, the problem will be easily solved – namely, whether to use reflux or not. Waiting for your answer.
Overpressure at the pump outlet due to backflow is difficult to address; although there is a safety valve, it still doesn’t solve the problem very well
I think it should be an outlet reflux; is the inlet reflux there to balance the pressure?
I’ve seen devices equipped with balance tubes, with the gas phase connected to the tank’s gas phase; since there’s no diagram of this device, I’m not sure