Dry gas seal issues in centrifugal compressors
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The dry gas seals are connected in parallel at both ends; the flow rate of the main sealing gas is 0.04 standard cubic meters, and the pressure of the sealing gas is 0.4 Mpa. Why isn’t the exhaust pipe for the sealing gas releasing gas, but instead is it drawing air in? I hope experts can help analyze this issue. Thank you very much
Under normal circumstances, a certain amount of the sealing gas does leak into the system, that is, into the process gas, but in very small quantities. First of all, the first question is: are the amount and pressure of sealing gas used by you appropriate? It doesn’t seem very reliable
There are drawings available for the dry gas seals of the units, with all relevant parameters clearly indicated on them – including parameters related to the isolation gas, the primary and secondary seal gases, and the leakage gas. It’s worth studying these drawings carefully and comparing them with the actual conditions on site
Double-end dry gas seal? Vent pipe?