How to detect inter-stage cross-ventilation
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This post was last edited by you*n*nyou on 2011-6-10 21:15. The discharge volume of the turbine compressor has decreased, the current is slightly higher, there is little change in the temperature after the cooler, and there is no change in vibration displacement. I suspect inter-stage air leakage; could those who have encountered this issue tell me what symptoms appear? .
Such issues rarely occur with modern equipment; it is recommended to check whether there is any air leakage in your pressure relief valve and anti-Pulse ation valve. The damage to the gas seal results in an increase in the intake temperature and exhaust temperature of the next stage. In severe cases, inter-stage pulsation occurs, producing abnormal noises. So my judgment is: air vent valve and anti-pulsation valve. (For reference)
As air leaks between stages, the exhaust temperature rises, while the pressure at the final stage decreases and the flow rate falls. In severe cases, the compressor gas seal is worn by the impeller; the thrust bearings will definitely be worn, resulting in increased vibration and changes in displacement. If the safety valves and vent valves do not leak. It is possible that the decrease in your gas volume and the increase in current are caused by higher air temperatures leading to greater air density. For reference only.
Check if there are any other reasons, as mentioned in Building 2#.
I have an identical unit there; the opening angles of the inlet vanes of the two units differ by 20%, and the air filters are located together, so it can’t be due to environmental factors. Kongtou is third-stage compression.
Inter-stage cross-ventilation can be determined by examining past and current inter-stage temperatures
Judgment is made by comparing the pressure differences at various levels with the normal operation data
By comparing the inlet and outlet pressures, pressure ratio, temperature, vibration, and shaft displacement at each stage, significant changes will occur if there is cross-flow between stages!