Compressor stage 1 and stage 3 cylinder return lines
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I saw a three-stage compressor, and both the outlet of one of its cylinders as well as the outlet of the third cylinder have pipelines leading to a return inlet buffer tank; there are control valves on these pipelines. What is the function of these two pipelines?
It should be a return line to prevent compressor surge!
The so-called return line replenishes the pressure of the process gas at the inlet, preventing high pressure and compressor surge. Additionally, it prevents overheating at the outlet due to an excessive compression ratio.
Prevent low inlet pressure and compressor surge. Sorry, that was a mistake~
Are there any other gas sources at the second-stage inlet? Three returns and one should be used to adjust the compressor load, that is, to control the outlet flow rate. One-to-one and two-to-two are used to adjust the compression ratio.
The Wangfu compressor does not suffer from surge problems; it allows for adjustment of the compressor flow rate, as well as the pressure and temperature at various stages
Section 2 has no other air source; sections 1 and 3 both return to the inlet buffer tank of section 1
What is the model of the press? How many cylinders are there per stage? Is it intended to balance the crankshaft forces?
Adjust the flow between stages to prevent inter-stage surge.