Analysis and Optimization of Abnormal Leakage of Direct-Acting Relief Valve in Hydraulic Vibration Test Bench
Aiming at the abnormal leakage of direct-acting relief valve caused by vibration during the test of the vibration test bench,the mathematical model of the valve core opening under the vibration environment is established,and MATLAB and the control variable method are combined to analyze the effect of vibration and component structure parameters on the leakage.The law of influence.On the basis of studying various influencing factors,with the minimum leakage as the objective function,the ge-netic algorithm is used to optimize the influencing factors of the abnormal leakage of the overflow valve,so as to obtain a test bench with higher stability.The optimization results show that after optimization within the range of changes in various factors,the vibration frequency,amplitude,and mass are reduced by 35.25%,30.7%,and 18.75%;the spring stiffness and viscous damp-ing coefficient of the relief valve are increased by 28.59% and30.85% respectively,which can make the amount of abnormal leak-age is reduced by 96.98%;the obtained results provide an important theoretical basis for the design of the vibration test bench and the optimization of the overflow valve structure.
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