不同温度下负流量泵结构参数对出口压力脉动的影响分析OA

As a key driving component in hydraulic systems,the dynamic performance of negative flow pumps directly influences the steady-state and response characteristics of the system.To improve system performance,it is essential to study the influence of internal structural parameters on the outlet pressure pulsation rate.An AMESim simulation model is established based on the operating principle of a negative flow pump.Model validation shows that the maximum relative errors between simulated and experimental values for the front and rear pump pressures are 9.35%and 9.12%,respectively,both within the 10%acceptable threshold.The influence of the control valve and variable mechanism on the outlet pressure pulsation rate at different temperatures is analyzed.The results indicate that the outlet pressure pulsation rate is negatively correlated with the left-side distance of the servo valve orifice and the orifice diameter.However,the outlet pressure pulsation rate is positively correlated with the power valve spool diameter,spool outer diameter,lug diameter,and slot diameter of the swing arm.The results provide a theoretical basis for optimizing the design of the control valve and variable mechanism in negative flow pumps.