Air compressor inlet pressure difference
Thread Content
The interlock logic of the air compressors in our factory includes an inlet pressure differential for the compressors. What exactly is this pressure differential – the difference between which two pressures? Thank you
It should be the pressure difference before and after the imported filter. If the pressure difference is too high, it will remind you to replace or clean the filter
The pressure difference or pressure ratio of the inlet filter; if the filter’s pressure difference is high, the filter element should be replaced or cleaned. The pressure ratio may be one inlet stage and three outlet stages; it is possible to determine whether surge will occur based on the value of the pressure ratio
Reply to 3# lizhenpeng: There are two points A and B for this pressure difference; one is interlocked with the anti-stall valve, and the other is interlocked with the reverse flow reset mechanism
The exhaust valve of the air compressor also has two solenoids – why are there two? What are their respective functions? Thank you
Reply to 2# niumowang: I don’t think it’s the pressure difference of the imported filter
What was said on the second floor is correct – it reminds you to replace the filter element. Go back to the fifth floor; you’ll know once you check the circuit diagram of the valve. I don’t understand electrical things, so I can’t explain it.
Friend, what is reverse flow reset? Learn about it.*
Reply to 4# li*aoliang616: I also want to learn what \"countercurrent reset interlock\" means. Please feel free to give me some guidance and help answer this question
Reply to 4# li*aoliang616: This differential pressure is the pressure difference between the inlet pipeline and the area in front of the inlet vanes. This pressure difference is used to calculate the flow rate of the air compressor, thereby providing protection against surge and backflow. I also suspect that you are using an axial flow compressor, as it seems that only axial flow compressors make use of this for backflow prevention.
Our compressors are Mann centrifugal compressors, not axial flow ones. I’m not sure exactly which pressure difference this is; it’s not clear from the flow diagram whether it’s the pressure difference before and after the guide vanes