Page 64 - 《摩擦学学报》2020年第3期

第 40 卷 第 3 期 摩 擦 学 学 报 Vol 40 No 3
2020 年 5 月 Tribology May, 2020

DOI: 10.16078/j.tribology.2019212

PEEK旋转密封环密封性能仿真和试验研究

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秦自臻 , 周 平 , 张 斌 , 李洪武 , 张 鹤 , 郭东明 1
(1. 大连理工大学 精密与特种加工教育部重点实验室，辽宁 大连 116024;
2. 中国兵器工业集团 第五三研究所，山东 济南 250031;
3. 中国北方车辆研究所 车辆传动重点实验室，北京 100072)
摘 要: 为研究低刚度胀圈型旋转密封环的接触状态和密封性能，以聚醚醚酮(PEEK)材料的无槽环和V形槽环两种
密封环为研究对象，基于COMSOL有限元软件建立了旋转密封流固耦合模型，对密封状态进行了模拟分析，并在试
验台上测试了密封环的摩擦转矩和漏率. 仿真结果表明：在载荷作用下，密封环的变形显著影响密封面接触压力和
流体压力分布. 试验结果表明：由于槽区流体的静压承载作用，V形槽环的摩擦转矩比无槽环小40%左右，但由于端
面开槽减小了局部径向密封宽度，V形槽环漏率比无槽环大10%左右. 另外，两种环的摩擦转矩随转速增加均没有
下降趋势，说明在试验条件下密封面动压减摩效果不显著. 研究结果有助于进一步认识胀圈型旋转密封环的密封机
理，指导新型密封环的设计.
关键词: 旋转密封; 流固耦合; 聚醚醚酮; 摩擦转矩; 漏率
中图分类号: TH117.2 文献标志码: A 文章编号: 1004-0595(2020)03–0330–09

Simulation and Experimental Study on Sealing Performance

of PEEK Rotary Seal Ring

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QIN Zizhen , ZHOU Ping , ZHANG Bin , LI Hongwu , ZHANG He , GUO Dongming 1
(1. Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian
University of Technology, Liaoning Dalian 116024, China
2. Institute 53, China North Industries Group Corporation, Shandong Jinan 250031, China
3. Science and Technology on Vehicle Transmission Laboratory, China North Vehicle
Research Institute, Beijing 100072, China)
Abstract: In order to study on contact state and sealing performance of low-stiffness expanding rotary seal ring, two
kinds of seal rings, untextured ring and V-shape grooved ring, were investigated. A fluid-structure coupling model for
the rotary seal rings was developed, based on the finite element analysis software COMSOL, and the sealing state was
analyzed. Also, friction torque and leak rate of the seal rings were tested on a test rig. Simulated results showed that，
under external loads, the deformation of PEEK seal rings significantly influenced the distribution of contact and fluid
pressure on the sealing faces. Experimental results showed that, due to hydrostatic load carrying in grooved area, the
friction torque of V-shape grooved ring was about 40% lower than that of untextured ring, whereas the leak rate was
10% more owing to the reduction of local radial sealing width. The friction torque of neither rings decreased with
rotational speed, indicating no obvious hydrodynamic friction reduction on the end face of the seal rings under test
conditions. The research results provided further understanding of the sealing mechanism of the expanding rotary seal
ring and guide the design of new seal rings.
Key words: rotary seal; fluid-structure coupling; PEEK; friction torque; leak rate

Received 1 November 2019, revised 28 December 2019, accepted 30 December 2019, available online 28 May 2020.
*Corresponding author. E-mail: pzhou@dlut.edu.cn, Tel: +86-411-84707430.
The project was supported by NSFC science foundation for innovative research groups(51621064) and the National Natural Science
Foundation of China (51875078, 51605079).
国家自然科学基金创新研究群体科学基金(51621064)和国家自然科学基金面上项目(51875078，51605079)资助.