Differences between the air valves when the compressor is operating at no load and at 50% load
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Dear teachers~, when the compressor in our unit operates at 50% load, only the valves located near the crankshaft end move; the valves on the other end do not function. Is the state of these non-functional valves the same as that of the valves when the compressor is not under load? The equipment supervisor said that the idling time without any load should not be too long, as it could damage the air valves Why?
What kind of compressor is it? Piston reciprocating? Centrifugal? Electric drive? Gas-powered?
Could you be more specific? . . . . . .
In the case of reciprocating compressors, at 50% load, no work is done on the cover side, and the intake valve is forced open, which is the same as at 0% load.
For the first question, it’s the same. For the second question, I believe it has little impact on inspiration; however, under no-load conditions, the intake valve spring remains in a compressed state, which affects the spring’s lifespan and reduces the life span of the valve as well
50% operation at the axial long period is no problem. If the cover’s measuring period is pushed open by the unloading device, it will cause deformation of the valve disc and spring, affecting the operating cycle of the gas valve.
The cover-side unloader remains in an open state for an extended period, which affects the service life of its air valve. It is recommended to alternate between using it from the cover side and the shaft side on a regular basis, keeping the load constant; this helps with the maintenance of the air valve. If the machine runs under no load for a long time, it can cause significant damage to the air valves.
There’s not enough knowledge here~ I didn’t know there were so many types~ It’s a compressor with reciprocating multi-stage compression
The method used to adjust the air volume in the machine you are using must be clearance air volume adjustment. At loads below 50%, the remote air valves remain closed. The pressure of the compressed intake gas is not high enough to reach the pressure in the outlet pipeline, so the outlet valve does not open. During inhalation, the pressure inside the cylinder cannot drop below the intake pressure, and therefore the inlet valve also does not open.