2D电液比例换向阀阀芯卡紧力分析

中国机械工程 ›› 2015, Vol. 26 ›› Issue (15): 1995-1999.

2D电液比例换向阀阀芯卡紧力分析

刘国文1,2;阮健1;李胜1;孟彬1;左希庆1,2

1.浙江工业大学特种装备制造与先进加工技术教育部重点实验室，杭州，310014
2.湖州职业技术学院，湖州，313000

出版日期:2015-08-10 发布日期:2015-08-04
基金资助:
国家自然科学基金资助项目（51375445）；国际科技合作专项资助项目（2011DFA72690）；浙江省自然科学基金资助项目（LZ13E050002）；湖州市科技局基金资助项目（2013YZ10）

Analysis of Spool Cliping Force for 2D Electro-hydraulic Proportional Directional Valve

Liu Guowen1,2;Ruan Jian1;Li Sheng1;Meng Bin1;Zuo Xiqing1,2

1.Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education，Zhejiang University of Technology,Hangzhou,310014
2.Huzhou Vocational & Technical College,Huzhou,Zhejiang,313000

Online:2015-08-10 Published:2015-08-04
Supported by:
National Natural Science Foundation of China（No. 51375445）;International S&T Cooperation Program of China( No. LZ13E050002); Zhejiang Provincial Natural Science Foundation of China（No. LZ13E050002）

摘要/Abstract

摘要：

针对2D电液比例换向阀阀芯卡滞现象，应用缝隙流动原理，对2D阀芯有无偏心情况下的径向卡紧力进行系统理论分析，得到2D阀芯液压卡紧力计算方法；运用MATLAB软件进行数值计算，得出2D阀芯径向卡紧力与偏心量和高低压孔夹角间的关系；根据2D阀特性，提出2D电液比例换向阀阀芯改进措施，应用Fluent 软件对阀芯表面的流场进行CFD仿真分析，比较了改进前后的流速矢量和压力分布情况，验证了改进措施的正确性。改进后的2D电液比例换向阀在中高压实验中无“卡滞”现象出现，实现了高压大流量的比例控制。

关键词: 2D, 电液比例换向阀, 卡滞, 径向力, 缝隙流动

Abstract:

To solve clamping malfunction of the spool which was caused in the 2D electro-hydraulic proportional valve under high pressure situation, applicating the theory of gap flow, the radial force of 2D valve under eccentric and non-eccentric situations was systematically analyzed and a computational formula of 2D valve clamping force was deduced.Using software MATLAB the analysis result was calculated to get the relationship between 2D valve clamping force and the eccentricity with the angle between the high pressure and low pressure holes. Based on the 2D valve's property, the improvement measures of solving spool clamping malfunction were put forward, The flow field of the spool surface was CFD simulated and analysed by using Fluent software. Based on the velocity vector and pressure distribution of the spool, the improvement measure of solving spool clamping malfunction is proved correct. The design philosophy of 2D electro-hydraulic proportional valve is improved, high pressure and large flow proportional control is achieved in improved 2D electro-hydraulic proportional valve.

Key words: , 2D；electro-hydraulic proportional valve；clamping；radial force；gap flow

中图分类号:

TH137

刘国文, 阮健, 李胜, 孟彬, 左希庆, . 2D电液比例换向阀阀芯卡紧力分析[J]. 中国机械工程, 2015, 26(15): 1995-1999.

Liu Guowen, Ruan Jian, Li Sheng, Meng Bin, Zuo Xiqing, . Analysis of Spool Cliping Force for 2D Electro-hydraulic Proportional Directional Valve[J]. China Mechanical Engineering, 2015, 26(15): 1995-1999.

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