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

被引：0
作者：
Weizheng Zhang
Lishan Xu
Yueyue Sun
Yanan Ren
Xuexing Ding
机构：
[1] Lanzhou University of Technology,School of Petrochemical Engineering
[2] Wenzhou Pump and Valve Engineering Research Institute of Lanzhou University of Technology,undefined
来源：
Journal of the Brazilian Society of Mechanical Sciences and Engineering | 2023年 / 45卷
关键词：
Gas seal; Lift-off rotational speed; Structural parameters; Starting process; Spiral groove;
D O I：
暂无
中图分类号：
学科分类号：
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.
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