大流量安全阀实验台液压系统设计与冲击加载模拟

Hydraulic system design of large flow safety valve experiment table and simulation of shock loading

为对大流量安全阀的性能进行分析和测试,设计了一种大流量安全阀的能器快速加载实验系统,并采用数值模拟方法研究液压系统的动态性能.采用AMESim搭建了实验台的液压系统模型,根据液压系统工作过程中的冲液阶段、加载阶段、测试阶段、卸荷阶段,对增压缸出口压力,安全阀流量、压力进行数值仿真分析,结果表明:增压缸出口的压力值为72.020 6 MPa时,安全阀开始工作,在冲击开始7 ms后,流量和压力在几次波动后趋于稳定,稳定后的流量为4 934.52 L/min.

In order to analyze and test the performance of large flow safety valve, a fast loading test system of high flow safety valve of energy accumulator was designed and the numerical simulation method was used to study the dynamic performance of hydraulic system. AMESim model was used to set up a test-bed model of hydraulic system. According to the hydraulic system during filling stage, the load phase, test phase, unloading stage, this paper carried out numerical simulation and analysis on the pressurized cylinder outlet pressure relief valve flow, and pressure. The results show that when pressurized cylinder outlet pressure is 72.020 6 MPa, safety valve starts to work. After shocking for 7ms, flow and pressure fluctuation tend to be stable, and the steady flow is 4 934.52 L/min.