Why is the exhaust pressure at stage 1 high when operating at 50% load with reciprocating compression?
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A reciprocating compressor operates with two stages of compression; after it is started, it runs at 50% load for about 3 minutes, which results in high exhaust pressure in the first stage and causes the safety valve on that stage to activate. Why is this? Can anyone help answer this?
It’s possible that there is a problem with the secondary intake valve.
This post was last edited by xj1983220 on 2015-8-24 20:55. The information you provided is incomplete! First, at 100% load, is the primary exhaust pressure high? If the exhaust pressure at stage 1 is also high under 100% load, it is most likely due to faulty or leaking inlet and exhaust valves at stage 2 ； If the exhaust pressure at 100% load is not high, then check whether the unloaders operate as designed at 50% load – whether the unloading is symmetrical, and whether unloading occurs simultaneously in both the first and second stages ； Check again to ensure that the connection of the air line for the unloader is correct. Note: It is preferable to provide the following information: 1. Whether it is during normal production or during debugging ； 2. Is it a sudden overpressure, or a gradual overpressure over time? ； 3. What is the medium being transported? 4. Changes in the various states of the unit before and after load adjustment.
There seems to be a problem with the primary exhaust valve, which needs to be checked.
What was said on the 3rd floor is correct! The analysis is comprehensive
First, check the secondary intake valve and the primary exhaust valve; the valves are the most likely culprits； Take another look; the secondary unloader isn’t in place, and it’s possible that this is the case even when no load is applied
The secondary intake is not sealing properly; the valve disc has been inspected and replaced or the valve seat has been cleaned, and verification is complete. :@:@:@:@:@:@
How is your load control managed? Is it controlled by the backflow rate or by the opening degree of the suction valve?
Check the sound and temperature of the primary exhaust valve and the secondary intake valve, and also verify whether the unloader operates properly
Is your loading method done by closing the bypass valve? Is that why the pressure near the air inlet remains excessively high????
It is the load applied through the load regulator, ranging from 0% to 50% to 90% to 100%