What is the nitrogen pressure at the end of the operation for the PLAN72+75 dry gas seal?
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What exactly is the alarm pressure for 75? All this information seems unreliable
0.015-0.12MPa
The pressure of the 72+75 secondary nitrogen seal is controlled by 2 orifice plates. If a leak from the first stage enters the second stage, it’s equivalent to a stream of leaked fluid directly entering the second stage. This causes the pressure between the orifice plates to rise. When it reaches 0.12 MPa (which is our case), it indicates that there has been a certain degree of leakage at the first stage, and disassembly for repair is required.
Floor 4 is the correct answer; let’s give it support~~
After some discussion, it was decided to set the value at the N2 inlet to 0.2, while the values at the outlet should be set to 0.07 and 0.12; alarms will be triggered in case of leaks