带有V形槽的支架换向阀工作性能分析
Coal Mine Machinery(2019)
Abstract
为主动调控液压支架换向阀开启过程中阀口过流面积变化梯度,提出在该阀阀芯凸肩上增加V形槽的结构改进设计方案,得出了阀芯带有V形槽的阀口等效节流面积计算方法,借助AMESim软件搭建了液压仿真模型,并与现有换向阀工作性能进行了对比研究.仿真结果表明:阀芯带有V形槽的换向阀改进方案可实现阀口开启过程中过流面积、过流流量及阀口压力的分段变梯度增大,避免现有开关型换向阀的过流流量与阀口压力跃升现象.
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