The company has two Sichuan Jinxing reciprocating compressors, one in use and one as a backup.
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The company has two Sichuan Jinxing reciprocating compressors, one in use and one as a backup. Under the same conditions, the inlet pressure of one of them was 0.17 Mpa higher than the normal value, while that of another unit was slightly lower. There were suspicions of leaks in the primary intake and exhaust valves, but everything was normal after they were disassembled. The valve that returns from the second stage to the first stage is also working properly. Please, experts, analyze whether the problem has been solved. Additionally, when checking the air valve, a small groove was found on the pressure cover of the first-stage air valve; could this have any impact?
fenghaoaafusou, what is the power rating of your compressors?
A high intake pressure at stage 1 and a low exhaust pressure indicate a slight leak in the intake valve of stage 1; check whether there is anything wrong with the valve disc. Also, what are the intake and exhaust pressures? Check the intake temperature; it should be higher than that of the other unit, which can also indicate a leak in the intake valve.
The piston machine of the poster should be a two-stage compression type, is it a D or M type compressor? Venus’s Z-type machines generally do not produce 2Z. If there is a leak, there should be a noticeable change in temperature; it is necessary to check the intake valve cover. It would be best to have pictures for everyone to see. I cannot answer your question about the air valve cover without knowing the specifics of the situation on site.
As a supplement, it is best to use pure water for testing valve plates (coal oil was used before); it is very difficult to detect slight leaks with the naked eye. When such a phenomenon occurs, it is best to run all relevant tests. Generally, those with large differences are easier to identify, while those with small differences are harder to detect.
Small machine, less than 200 kW – what’s the pressure?
Low exhaust pressure may be due to a leak between the piston and the cylinder wall; check whether the intake temperature is the same Check between the filter and the primary inlet