某双阀芯电液比例多路阀主阀进口节流流场及阀口压降特性研究

发布时间：2018-03-18 08:39

本文选题：双阀芯　切入点：电液比例多路阀　出处：《中国机械工程》2017年10期 　论文类型：期刊论文

【摘要】：以某系列双阀芯电液比例多路阀为研究对象,采用CFD流场仿真技术和PIV可视化测速技术对不同阀口开度和流量下的主阀沿进口流道、节流口、阀腔的流场进行了流体仿真和试验可视化研究。应用Fluent软件仿真研究了主阀进口节流流场分布并得出阀口压降特性;采用PIV试验研究的手段对流场分析结果加以验证,应用2D-PIV技术获得主阀腔内部一个截面上的流场分布,并通过相似理论计算得出阀口压降特性。CFD流场仿真和PIV试验结果表明:该双阀芯电液比例多路阀主阀出油环形腔内会形成较大旋涡,且阀口开度和流量对主阀进口节流内部流场结构和阀口压降特性有重要的影响。研究结果对定性分析双阀芯电液比例多路阀主阀内能量损失和噪声、主阀的结构和流道的设计以及优化具有重要实际意义,为CFD技术和PIV技术在双阀芯多路阀领域的应用研究提供了参考。
[Abstract]:Taking a series of double valve spool electro-hydraulic proportional multiway valve as the research object, the main valve with different opening and flow rate is throttled along the inlet by using CFD flow field simulation technology and PIV visualization velocity measurement technology. The flow field of the valve cavity is studied by fluid simulation and visualization test. The flow field distribution at the inlet of the main valve is simulated by Fluent software and the pressure drop characteristics of the valve outlet are obtained. The flow field analysis results of the PIV test are used to verify the flow field analysis. The flow field distribution on a section of the main valve cavity is obtained by using 2D-PIV technique. The simulation results of the pressure drop characteristics of the valve outlet and the PIV test show that a large swirl will be formed in the oil ring cavity of the main valve with the double spool electro-hydraulic proportional to that of the main valve. The opening and flow rate of the valve have an important influence on the internal flow field structure and the pressure drop characteristics of the main valve inlet throttle. The results of the study are useful for the qualitative analysis of the energy loss and noise in the main valve of the double valve core electro-hydraulic proportional multiway valve. The design and optimization of the main valve structure and flow channel are of great practical significance, which provides a reference for the application of CFD technology and PIV technology in the field of double-spool multi-way valve.
【作者单位】：先进制造成形技术及装备国家地方联合工程研究中心(燕山大学);燕山大学河北省重型机械流体动力传输与控制实验室;燕山大学机械工程学院;
【基金】：国家科技支撑计划资助项目(2014BAF02B00)
【分类号】：TH137.52

【相似文献】