Abstract: This paper expounds the impact mechanism of the throttling effect of suction valve in reciprocating compressor on the suction valve power consumption and obtains the simple calculation method of the temperature coefficient in reciprocating compressor suction. The valve throttling is simulated by using flow simulation module in SolidWorks and the accuracy of simple calculation method of the temperature coefficient is verified. It is found through analysis that the temperature coefficient is related to the power loss in compressor valve only when the characteristic parameters of the compressor are determined. This founding provides a basis for the correction of suction flowrate when compressor is designed. The paper also puts forward some measures to improve compressor suction flowrate and ensures that the compressor works steadily in high suction efficiency for a long period. Meanwhile, this paper points out that when the working fluid contains more impurities, good anti-blocking valve should be preferentially used.

Key words: reciprocating compressor, valve throttling, temperature coefficient, suction valve power consumption, inspiration capacity, CFD calculation