Reciprocating compressor issues
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Why is the outlet pressure of a reciprocating compressor controlled through the inlet valve?
This is the difference between turbine machinery and positive-displacement machinery.
Could you explain it in more detail (the principle of this control)?
Could you explain it in more detail (the principle of this control)?
The same amount of gas enters a reciprocating compressor as exits it; therefore, an inlet valve is used to control the outlet pressure. . A reciprocating compressor is a positive-displacement machine, and that is why it is adjusted in this way
Insufficient air intake can reduce the outlet pressure.
Reply to 5# innnosense: Don’t turbo compressors output the same amount of gas as they take in? I’m sorry, I don’t quite understand
Can the inlet pressure determine the outlet pressure? The outlet pressure depends on the back pressure, right (as long as the compressor’s capacity permits it); it is the inlet pressure that controls the flow rate.
I agree with what was said on floor 8: for reciprocating compressors, the exhaust pressure depends on the back pressure. Under the same conditions, a decrease in inlet pressure results in a decrease in exhaust volume, while an increase in inlet pressure leads to an increase in exhaust volume.
The outlet pressure is determined by the system backpressure; the inlet valve is used primarily to regulate the compressor flow rate, not to control the outlet pressure!
Reply to 10# zhaojiong1999: Then why does the compressor stop operating with an overload alarm when the inlet of the compressor is enlarged?