Regarding the startup/switchover operations of reciprocating compressors, is it allowed to rotate the shaft under pressure?
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As the title suggests: new hydrogen compressor with an inlet pressure of 2.6 MPa and an outlet pressure of 6.0 MPa. 1. Is it permissible to perform shaft turning while the compressor is under pressure? 2. What are the hazards of turning the shaft under pressure? When the air valve has no load, does it cause overpressure at the outlet, negative pressure that damages the cylinder body, overheating of the piston, or similar issues? 3. If turning the shaft under pressure is required, what do people do in that case? Does the outlet open across the line? Should the return line be left open? 4. How to prevent high voltage from leaking into low voltage during startup or switching? Such as from the outlet through the return line (cooler) to the inlet separation tank? Previously, we used mechanical and electric pressure-driven turning devices, and no accidents occurred, but is this really the safest method? Manager Discussion Group
I do this by releasing the pressure before shutting down the equipment; shutting it down while pressure is still present affects its service life