The influence of spiral angle on lift-off speed of face gas seal under start-up

doi:10.1007/s42452-019-1103-2

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	The influence of spiral angle on lift-off speed of face gas seal under start-up
	Lu, Junjie 1; Ding, Xuexing 2; Zhang, Wei 1
刊名	SN Applied Sciences
	2019-09-01
卷号	1 期号:9
关键词	Gases Rotating machinery Speed Experimental test Gas film thickness Hydrodynamic lubrication Mixed lubrication Rotational speed Slip-flow effects Start-up process Theoretical modeling
ISSN号	2523-3963
DOI	10.1007/s42452-019-1103-2
英文摘要	The lift-off rotating speed of dry gas seal (SG-DGS) is investigated by conducting an experimental test, and using a theoretical model based on the slip-flow effect. The experimental results show that the mixed lubrication regime is transferred to the hydrodynamic lubrication regime at a smaller lift-off rotational speed for a lower spiral angle. On the other hands, the theoretical procedure is implemented to calculate the gas film opening force and the lift-off rotational speed is determined by the minimum contact gas film thickness. The theoretical results show that the smaller spiral angle can offer the greater gas film force and lower lift-off speed. Meanwhile, the experimental data verify the theoretical results well. It can be demonstrated that the spiral angle has a strong effect on the lift-off rotating speed and the theoretical model can calculate the lift-off rotational speed of SG-DGS during start-up process. © 2019, Springer Nature Switzerland AG.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	Springer Nature
WOS记录号	WOS:000486959300024
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150526]
专题	石油化工学院
作者单位	1.Zhejiang University Ningbo Institute of Technology, Ningbo, China; 2.College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Lu, Junjie,Ding, Xuexing,Zhang, Wei. The influence of spiral angle on lift-off speed of face gas seal under start-up[J]. SN Applied Sciences,2019,1(9).
APA	Lu, Junjie,Ding, Xuexing,&Zhang, Wei.(2019).The influence of spiral angle on lift-off speed of face gas seal under start-up.SN Applied Sciences,1(9).
MLA	Lu, Junjie,et al."The influence of spiral angle on lift-off speed of face gas seal under start-up".SN Applied Sciences 1.9(2019).