Gas leakage in piston compressors
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The company has an L-type piston compressor whose cylinder is equipped with a jacket for cooling. A problem has arisen: before starting the compressor, when the outlet valve is opened, the gas coming out flows into the compressor’s suction buffer tank, causing the pressure in that tank to rise significantly. It is initially suspected that there is a problem with the suction and exhaust valves; all of them were removed and checked for leaks, but no issues were found, nor was there any leakage in the water in the cylinder jacket. Now it is suspected that there might be a short circuit between the cylinder’s suction and exhaust channels, but since the jacket water separates these channels and there is no leakage in that water, it is unclear how the gas from the outlet can get into the suction buffer tank
Check the circuit valve for any issues.
The exhaust gas enters the inlet buffer tank – is there a return line?
Is there a check valve behind the outlet valve? The check valve does not close properly, allowing fluid to flow from the circuit into the inlet buffer tank
The circuit has been isolated with blind flanges; gas can only enter the suction buffer tank through the compressor. Blind flanges have been installed on the compressor’s circulation pipelines
Have you found out the reason? Share it.