Research on transient dynamic behavior and stress of reciprocating compressor valve under air volume regulation

Abstract

By establishing the motion equation of the air valve under the condition of air volume adjustment, the motion law of the air valve in the process of expansion, compression, suction and exhaust of the reciprocating compressor under different loads is calculated, and the reciprocating compressor with stepless air volume adjustment is used. The compressor unit verifies the calculation results. The maximum stress of the valve plate under different loads is analyzed, and the results show that in the ideal state where the fork pressure disappears instantaneously, the adjustment method of the partial stroke pressure opening suction valve has a greater influence on the stress concentration of the valve plate than the normal condition; in the partial stroke pressure opening suction valve adjustment method, the free retraction speed and stress of the valve plate will increase as the compressor load decreases.