振动环境下插装阀选型优化方法研究

隧道掘进机在强振动环境下工作,由振动状态下的插装阀仿真模型分析可知,传统选型方法选择的插装阀在强振动条件下可能出现性能失效等问题,因此需对振动环境下的插装阀选型及优化方法进行研究。一种振动环境下选型方法的基本原理是控制插装阀阀芯偏移量均值不大于5%倍阀芯开启度均值。对于可能出现性能失效的插装阀可以采用正交实验法对其结构参数进行优化设计,实例显示优化后的正常工作区域较优化前扩大了12%;一种简易优化法也可以被采用,即在保证阀口流量的前提下增加弹簧刚度。

Research on selection and optimization method of cartridge valve under vibration environment

According to the characteristics of that tunnel boring machine works in the strong vibration environment,the simulation model of cartridge valve in vibration condition was established,and the simulation results show that cartridge valve chosen by traditional way might become invalid under vibration environment,therefore a kind of selection and optimization method was proposed to ensure the stability of flow rate. The fundamental principle of this method is that the mean value of spool offsets should be set less than 5% mean of valve opening height. Orthogonal experimental method can be used to optimize structure parameters for some poor working cartridge valve,and the example shows that the working area has been increased by 12% than before optimization.Meanwhile,a simple optimization method can also be utilized,in which the spring stiffness can be increased in the premise of ensuring the flow.