基于微造型水压三用阀阀芯承载力研究
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摘要
以水压三用阀阀芯为研究对象,在阀芯表面设置微造型形貌。采用基于N-S方程的CFD方法分析微造型的动压润滑特性,分析微造型间隙、阀芯移动速度与微造型形貌等因素对阀芯表面承载力特性的影响。研究结果表明:在阀芯表面加工微造型能产生动压润滑效果;阀芯移动速度越大承载力越小;微造型上、下壁面承载力方向随着微造型间隙H_0增大而改变。
Taking the three-function valve core of water hydraulic as the research object, the microtexturing is processed on the surface of the valve core. The CFD method based on N-S equation is used to analyze the hydrodynamic lubrication characteristics of micro-texturing, and the influence of microtexturing clearance, valve core movement speed and micro-texturing morphology on the bearing capacity characteristics of the valve core. The results show that the micro-texturing of the surface of the valve core can produce dynamic pressure lubrication effect; the larger the moving speed of the valve core, the smaller the bearing capacity; the bearing capacity direction of upper and lower wall in microtexturing changes with the increases of micro-texturing clearance H_0.
Taking the three-function valve core of water hydraulic as the research object, the microtexturing is processed on the surface of the valve core. The CFD method based on N-S equation is used to analyze the hydrodynamic lubrication characteristics of micro-texturing, and the influence of microtexturing clearance, valve core movement speed and micro-texturing morphology on the bearing capacity characteristics of the valve core. The results show that the micro-texturing of the surface of the valve core can produce dynamic pressure lubrication effect; the larger the moving speed of the valve core, the smaller the bearing capacity; the bearing capacity direction of upper and lower wall in microtexturing changes with the increases of micro-texturing clearance H_0.
引文
[1]杨华勇,周华.水液压技术研究新进展[J].液压与气动,2013(2):1-6.
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[5]马丁,何涛,王传礼.不同微造型对水压安全阀阀芯润滑的影响[J].煤炭技术,2017,36(9):207-209.
[6]于海武,王晓雷,孙造,等.圆柱形微凹坑表面织构对流体动压润滑性能的影响[J].南京航空航天大学学报,2010,42(2):209-213.
[7]何涛,喻曹丰,王传礼,等.微造型阀芯摩擦副的动压承载及润滑特性[J].机械科学与技术,2016,35(12):1 829-1 833.
[2]刘银水,吴德发,李东林,等.海水液压技术在深海装备中的应用[J].机械工程学报,2014,50(2):28-35.
[3]何涛,邓海顺,王传礼,等.三用阀阀芯微造型的动压润滑性能[J].液压与气动,2015(3):15-18.
[4]杨华勇,周华.纯水液压传动技术的若干关键问题[J].机械工程学报,2002(S1):96-100.
[5]马丁,何涛,王传礼.不同微造型对水压安全阀阀芯润滑的影响[J].煤炭技术,2017,36(9):207-209.
[6]于海武,王晓雷,孙造,等.圆柱形微凹坑表面织构对流体动压润滑性能的影响[J].南京航空航天大学学报,2010,42(2):209-213.
[7]何涛,喻曹丰,王传礼,等.微造型阀芯摩擦副的动压承载及润滑特性[J].机械科学与技术,2016,35(12):1 829-1 833.