Dry gas seal isolation gas
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What is the typical pressure level for the isolation gas in the dry gas seal of a compressor? What does it mean if this value increases?
Control the parameters in accordance with the operating procedures; since the devices have various uses, it is still necessary to follow the device manual as the standard for operation.
What was said on the 3rd floor makes sense; it’s related to the equipment, the process medium, and the inlet and outlet pressures
The isolation air pressure of centrifugal compressors is generally controlled at 0.02 MPa； Without any adjustments, the pressure changes in response to variations in the nitrogen system pressure; if the comb teeth are damaged, the pressure generally won’t be able to be maintained.
Isolation gas usually has flow rate and pressure indicated on the gas supply pipe; a high pressure indicates either high pressure in the external supply or a problem with the pressure regulator. The pressure in the sealed chamber cannot be measured
These pressure requirements are generally not high; the main purpose is to prevent lubricant vapor from entering the sealing chamber. We usually keep the pressure above 0.05 Mpa, thereby ensuring that nitrogen can enter and perform its function
Pressure before the gate valve > 0.4 Mpa, pressure after the gate valve > 0.02 Mpa