Sealing size relationship of air separation centrifugal medium-pressure liquid oxygen pumps
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Point A is the pressure of the sealed air source. Point b is the pressure inside the seal. c is the pressure discharged from the sealed outlet. Is the relationship among the three A greater than B greater than C? What is the reason?
This is a general gas seal system for setting dynamic sealing points; using the mixed gas as a reference point, a pressure lower than that of the leaking gas is created to suppress leakage； Less than the sealing air source pressure. It must not be greater than the leakage pressure; otherwise, it will enter the sealed medium system and cause contamination of the medium. Its function is to use the pressure of the mixture to suppress the amount of leaking medium; absolute balance is not possible, and maintaining a leakage level as close to zero as possible is the best outcome. The suppression pressure within the mixture chamber is controlled by releasing or recovering the mixture gas. For reference.
This shows the pressure levels at three different points in a circuit; due to flow losses, these levels definitely decrease over time