The influence of different structural parameters on lift off speed of spring groove gas seal

被引：1

作者：

Zhang, Weizheng ^{[1
,2
]}

Xu, Lishan ^{[1
]}

Sun, Yueyue ^{[1
]}

Ren, Yanan ^{[1
]}

Ding, Xuexing ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou, Peoples R China

[2] Lanzhou Univ Technol, Wenzhou Pump & Valve Engn Res Inst, Wenzhou, Peoples R China

来源：

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING | 2023年 / 45卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Gas seal; Lift-off rotational speed; Structural parameters; Starting process; Spiral groove; MECHANICAL SEAL;

D O I：

10.1007/s40430-023-04368-7

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The lift-off behaviour of the starting process is essential for reducing friction and abrasion as well as improving the reliability and lifetime of spiral groove dry gas seals. The theoretical calculation is based on the method of the compressible Reynolds equation, and it is verified with the experimental results of the sealing ring radial direction and the face leakage rate. Furthermore, based on the relationship between the structural parameters of the spiral groove and the lift-off rotational speed: the increase of groove number and groove depth and decrease of the spiral angle leads to a lower lift-off rotational speed. The effect of structural parameters on the lift-off rotational speed presents the following trend: groove number > spiral angle > groove depth. These results illustrate the potential of the theoretical model for predicting the lift-off behaviour of spiral groove dry gas seals and help in the design and optimization of dry gas seals in the future.

引用

页数：11

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