Regulation Mechanism of Screw Preloading in Hydrostatic Mechanical Face Seals

被引：0
|
作者：
He Q. [1 ]
Wang H. [2 ,3 ]
Huang W. [1 ]
Liu Y. [1 ]
Liu X. [1 ]
Li Y. [1 ]
Wang Y. [1 ]
机构：
[1] Department of Mechanical Engineering, Tsinghua University, Beijing
[2] Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing
[3] Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Tsinghua University, Beijing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 03期
关键词：
Hydrostatic mechanical seal; Multi-body contact; Screw preloading; TFSI model;
D O I：
10.3901/JME.2020.03.137
中图分类号：
学科分类号：
摘要：
The preloading is an important design parameter in hydrostatic mechanical face seals. Considering the multi-body contact relationship between the sealing components and the influence of the O-ring secondary seal, a thermal fluid-solid interaction (TFSI) model for hydrostatic mechanical face seal is finally developed. According to the change of contact relationship between the seal ring and the support ring, the regulation mechanism of the preloading on the sealing performance is analyzed. The results show that the preloading of the screw has a significant effect on the sealing performance. The leakage rate increase as the preloading increases, and this change law is affected by the contact status between the seal ring and its support. Moreover, it is found that the stationary ring and the rotating ring play different roles in sealing, because the size and boundary conditions of the supporting rings are different. © 2020 Journal of Mechanical Engineering.
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页码：137 / 143
页数：6
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