航空作动器的VL密封特性分析

doi:10.3785/j.issn.1008 973X.2015.09.019

浙江大学学报(工学版)

机械与能源工程

航空作动器的VL密封特性分析

欧阳小平1,薛志全1,彭超1,周清和2,杨华勇1

1. 浙江大学流体动力与机电系统国家重点实验室,浙江杭州 310027;
2. 航空机电系统综合航空科技重点实验室,江苏南京 211106

Performance analysis on VL seal in aircraft cylinder

OUYANG Xiao ping1, XUE Zhi quan1, PENG Chao1, ZHOU Qing he2, YANG Hua yong1

1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;
2. Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration, Nanjing 211106, China

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摘要：

为提高航空作动器的往复密封性能,对其新型密封结构进行特性分析.通过分析液压往复密封机理,指出接触压力分布对往复密封泄漏和摩擦的影响,并获得高性能密封的接触压力分布方法.对航空作动器新型密封VL密封结构进行仿真分析,获得4种流体压力下的接触压力分布,以此揭示流体压力建立过程中密封结构与接触压力分布的变化关系,并指出VL密封对高压流体的密封适应性,以及其结构对产生不同接触压力分布的特殊性规律.将VL密封与O形密封和斯特封进行性能对比,分别计算摩擦力与泄漏量,证明VL密封具有密封性能好、可靠性高的特点.

Abstract:

A new cylinder seal was investigated to improve the performance of reciprocating seal installed in the aircraft hydraulic cylinder. Firstly, the analysis of the working principle of general hydraulic reciprocating seal pointed out the effect of contact pressure distribution on seal leakage and friction, and the most suitable contact pressure distribution method was obtained. Secondly, the VL seal was modeled and simulated, and the contact pressure distributions at different fluid pressures were obtained to reveal the relationship between the construction and contact pressure distribution during the process of building fluid pressure. The adaption of the seal structure against high fluid pressure and the principle of the special pressure distribution of the VL seal were pointed out. Finally, comparison among the VL seal, O ring seal and step seal was carried out by analyzing their frictions and leakages, respectively. Results show that the VL seal has the best performance of leakage and liability．

出版日期: 2015-10-15

TH 137.51

基金资助:

国家“973”重点基础研究发展规划资助项目（2014CB046403）；浙江大学基本科研业务费专项资金资助项目(科研发展专项) (2013FZA4004)；国家自然科学基金资助项目（51275450）.

作者简介: 欧阳小平(1974-)，男，副教授，博士，从事流体传动与控制研究. ORCID: 0000 0002 2090 7123.E-mail: ouyangxp@zju.edu.cn

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引用本文:

欧阳小平,薛志全,彭超,周清和,杨华勇. 航空作动器的VL密封特性分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008 973X.2015.09.019.

OUYANG Xiao ping, XUE Zhi quan, PENG Chao, ZHOU Qing he, YANG Hua yong. Performance analysis on VL seal in aircraft cylinder. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008 973X.2015.09.019.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008 973X.2015.09.019 或 http://www.zjujournals.com/eng/CN/Y2015/V49/I9/1755

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