基于液动力的水压插装阀阀口优化仿真研究  

Flow force reduction in large flow cartridge valve by optimizing geometric parameters of orifice

作　　者：韩明兴[1] 刘银水[1] 吴德发[1] 谈怀江[1] Han Mingxing ,Liu Yinshui, Wu Defa ,Tan Huaijiang(School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Chin)

机构地区：[1]华中科技大学机械科学与工程学院

出　　处：《华中科技大学学报（自然科学版）》2018年第3期65-68,74,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51575200)

摘　　要：针对压射系统所存在的快慢压射两种不同工况的特点,提出了一种具有双U型阀口的大流量水压比例插装阀结构,对这种双U型阀口的结构参数进行了优化仿真研究.首先建立了流体计算域的3D仿真模型,确定了阀口主要优化参数,并采用ANSYS/FLUENT仿真软件详细研究了阀口参数对液动力的影响,通过选取最佳阀口结构参数来改善阀口流场特性并最终减小液动力.最后进行了压射系统的压射过程仿真,动态仿真结果表明：通过优化阀口结构参数减小了液动力,同时提高了大流量水压比例插装阀动态响应性能,缩短了慢快压射的转换时间,改善了压射系统的压射性能.A numerical simulation method was applied to obtain the visualization of the internal flow and achieve a better understanding of the flow field in the valve with double-U-grooves.The main influential geometry parameters of the metering edge were defined and the 3 D-dimensional computational models of the fluid computational domains were established.Then effects of various parameters on the axial flow forces were studied in detail by using the commercial software ANSYS/FLUENT.The simulation results indicate that the maximal axial flow forces can be reduced by optimizing the geometry parameters of the valve poppet.Finally,a simulation study on the injection system was carried out by using AMESim.The simulation results show that orifice optimization can improve the injection performance.

关 键 词：水液压 比例插装阀 液动力 阀口优化 压射系统 双U阀口 

分 类 号：TH137.52[机械工程—机械制造及自动化]