液压与气动2023，Vol.47Issue(12)：55-60,6.DOI:10.11832/j.issn.1000-4858.2023.12.008
液压伺服滑阀阀口小开度冲蚀特性
Orifice Erosion Characteristic of Hydraulic Servo Spool Valve Under Small Opening
摘要
Abstract
Hydraulic servo spool valve was susceptible to performance degradation due to erosion by solid particles in oil.On the basis of measuring the micro-topography of the working edges,a particle movement visualization model of valve orifice under small opening was established.The particle movement trajectory of the valve orifice was studied and the variation law of the erosion rate of the working edges with the liquid flow direction was simulated and analyzed.The results showed that there were microscopic notch morphology with chipping on the working edge of the valve orifice erosion,and the high-speed collision and scraping with the working edge during the movement of particles were the main forms of orifice erosion.The mean erosion rate and variance were about 1 and 0.8 times higher than those in the backflow area,respectively.关键词
液压伺服滑阀/阀口冲蚀/微观形貌/颗粒运动/液流方向Key words
hydraulic servo spool valve/orifice erosion/microscopic morphology/particle movement/flow direction分类
机械制造引用本文复制引用
刘新强,刘飞,冀宏,王聪,林广..液压伺服滑阀阀口小开度冲蚀特性[J].液压与气动,2023,47(12):55-60,6.基金项目
国家自然科学基金(52005234) （52005234）
流体动力基础件与机电系统全国重点实验室开放基金(GZKF-202215) （GZKF-202215）
