Problems with liquefied gas pumps
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If the outlet flow rate of the liquefied gas pump is low, will it affect the service life of the dry gas seal?
If the outlet flow rate of the liquefied gas pump is too low, it should be set at the minimum flow rate
It will not affect the lifespan of the seal, because as long as there is pressure at the outlet, liquefied gas will flow into the seal cooling chamber, thereby cooling the seal. Low flow rate isn’t a problem; what’s concerning is the lack of pressure at the outlet!
What type of liquefied gas pump is the poster using, one with blades or a screw type?
What causes insufficient outlet pressure? :L:L This is exactly what I’m facing right now
The seal used by the poster is a dry gas seal. The dry gas seal is not greatly affected by the medium. In the case of a series-connected dry gas seal, the inner seal is related to the pressure of the medium, while the outer layer is the dry gas seal; the pressure of the dry gas used in this seal is slightly lower than the pressure of the medium. As long as the outlet pressure is greater than the inlet pressure, a flushing cycle occurs; it has an impact, but I believe it’s not significant. Double-end dry gas seals do not require a flushing medium; too low a pressure of this medium can allow gas to enter it, resulting in vacuum conditions that damage the seal. That’s all.