微造型阀芯摩擦副的动压承载及润滑特性

何涛; 喻曹丰; 王传礼; 邓海顺; 张辉

doi:10.13433/j.cnki.1003-8728.2016.1205

微造型阀芯摩擦副的动压承载及润滑特性

doi: 10.13433/j.cnki.1003-8728.2016.1205

1.
安徽理工大学机械工程学院, 安徽淮南 232001

基金项目:

国家自然科学基金项目（51675003、51205002）、流体动力与机电系统国家重点实验室开放基金项目（GZKF-201205）及安徽省科技计划项目（1301022074）资助

详细信息

作者简介:
何涛(1987-),博士研究生,研究方向为液压传动与控制,taoheaust@163.com

通讯作者:
王传礼(联系人),教授,博士生导师,chlwang@aust.edu.cn

计量
- 文章访问数: 194
- HTML全文浏览量: 20
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2015-03-25
- 刊出日期: 2017-01-05

Analyzing Hydrodynamic Bearing Capacity and Lubrication Characteristics of Micro-texture Valve Core Friction Pair

1.
School of Mechanical Engineering, Anhui University of Science and Technology, Anhui Huainan 232001, China

摘要

摘要: 以水液压滑阀的阀芯摩擦副为研究对象，通过在阀芯表面设计微造型结构以改善其动压承载和润滑性能。采用基于N-S方程的CFD方法分析微造型阀芯摩擦副的流场，得到微造型阀芯表面的压力分布曲线、承载力曲线以及摩擦力曲线，研究阀芯叠合量大于2.5 mm时，叠合量的大小对微造型阀芯摩擦副动压承载及润滑性能的影响。研究结果表明：光滑阀芯的表面无动压润滑效果，而微造型阀芯的表面可产生油膜动压支撑；且随着阀芯叠合量的减小，微造型阀芯表面的承载力值呈上升趋势，从而使阀芯和阀套间摩擦副的接触摩擦力减小。
- 阀芯 /
- 微造型 /
- 水液压 /
- 动压承载 /
- 润滑
Abstract: The paper studies the friction pair of water hydraulic slide valve core. In order to improve its hydrodynamic bearing capacity and lubrication characteristics, micro-textures are set up on its surface. The computational fluid dynamics method based on the Navier-Stokes equation is used to analyze the flow field of the micro-texture valve core friction pair. The core surface pressure distribution curves, pressure bearing and friction curves are obtained. The influence of valve core overlap length on the hydrodynamic bearing capacity and lubrication characteristics of the friction pair is analyzed under the condition that the overlap length is greater than 2.5 mm. The analysis results show that the smooth valve core does not produce hydrodynamic lubrication effect but that the micro-texture valve core surface produces oil film's dynamic pressure support. With the decrease of the core overlap length, the bearing capacity on the micro-texture core surface increases; thus the contact friction between the valve core and the sleeve decreases.
- valve core /
- micro-texture /
- hydrodynamics /
- hydrodynamic bearing capacity /
- lubrication

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参考文献(16)

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