A question about a compressor?
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Can the first and second reverse strokes of a reciprocating compressor change the compression ratio? Can the clearance adjustment of a reciprocating compressor change its compression ratio? One of my junior colleagues asked why the inlet of the compressor is on top while the outlet is at the bottom Can’t the two of them swap places?
It’s been a long time since I graduated, and I’ve completely forgotten what the compression ratio means. It seems to refer to the ratio of the absolute pressure of the compressor’s exhaust gas to that of its intake air. Question 1: I’m confused too. By definition, changing the opening degree of the return valve alters the outlet pressure; since the inlet pressure remains unchanged, the compression ratio should also change. Question 2: If the exhaust pressure is low, the compression ratio must have decreased. Question 3: The outlet valve is located at the bottom, allowing foreign objects (such as liquid droplets and piston ring debris) to be discharged from the compressor. This post was last edited by superblade on 2009-2-27 12:58.]
Agree with what was said on the 2nd floor! I can only give you 2 points (maximum permission)
Reversing 1 and 2, or reversing 2 and 1, essentially changes the outlet and inlet pressures and reduces the compression ratio. Adjusting the clearance in reciprocating compressors actually alters the compressor’s flow rate rather than its compression ratio. In the vast majority of compressors, the inlet valve is located at the top while the outlet valve is at the bottom; this arrangement is intended to prevent liquid slugging by ensuring that any condensed liquid is carried out due to gravity. In my case as well, the inlet and outlet valves are arranged horizontally; there is no condensed liquid, nor is there any oil in the piston cylinders, so it doesn’t matter