How to determine the leakage of air valves at each stage of a reciprocating compressor?
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bk14.jpg As the title suggests, how can one determine leaks in the air valves of various stages of a reciprocating compressor? (There are levels one, two, and three)
The intake valve is leaking; hot gas is circulating, and it’s extremely hot to the touch. The rest is analyzed based on the level of pressure. Draw a schematic diagram of the specific method, so that it is clear at a glance which valve is involved in case of abnormal pressure. But it’s not an absolute specification of which one; you still need to listen, use the listening stick. Gradually accumulating experience.
For internal operations, first check which level of pressure has changed; then work in conjunction with external operations to inspect the gas valves. If there is internal leakage in a gas valve, its temperature will rise. It is possible to compare several gas valves at the same time – those with higher temperatures are likely to have problems
First, the control panel is used to check whether the exhaust temperature and exhaust pressure at various levels are normal; if there is internal leakage in the valves, the exhaust temperature will increase； At the site, it is possible to listen to sounds using a listening rod (judgment based on experience is required).
Thermometers are installed at both the inlet and outlet of the compressor; the temperatures at the inlet, leakage point, and outlet are all high. A leakage at the outlet will cause its temperature to rise, allowing it to be determined which gas valve is leaking.