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The influence of 3-DOF film thickness disturbance on transient performance of typical spiral groove dry gas seals

Yuan Chen (College of Mechanical and Electrical Engineering, China JiLiang University, Hangzhou, China)
Hao Shang (College of Mechanical and Electrical Engineering, China JiLiang University, Hangzhou, China)
Xiaolu Li (College of Mechanical and Electrical Engineering, China JiLiang University, Hangzhou, China)
Yuntang Li (College of Mechanical and Electrical Engineering, China JiLiang University, Hangzhou, China)
Bingqing Wang (College of Quality and Safety Engineering, China Jiliang University, Hangzhou, China)
Xudong Peng (College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 30 November 2021

Issue publication date: 21 January 2022

125

Abstract

Purpose

The purpose of this paper is to investigate the influence rule and mechanism of three degrees of freedom film thickness disturbance on the transient performance of spiral groove, upstream pumping spiral groove dry gas seal (UP-SDGS) and double-row spiral groove dry gas seal (DR-SDGS).

Design/methodology/approach

The transient performance of spiral groove, UP-SDGS and DR-SDGS are obtained by solving the transient Reynolds equation under different axial and angular disturbance coefficients. The transient and steady performance of the above-mentioned DGSs are compared and analyzed.

Findings

The film thickness disturbance has a remarkable impact on the sealing performance of DGS with different structures and the calculation deviations of the leakage rate of the UP-DGS will increase significantly if the film thickness disturbance is ignored. The axial and angular disturbance jointly affect the film thickness distribution of DGS, but there is no significant interaction between them on the transient sealing performance.

Originality/value

The influence mechanism of axial disturbance and angular disturbance on the transient performance of typical SDGSs behavior has been explained by theory. Considering small and large disturbance, the interaction between axial disturbance and angular disturbance on the transient performance have been studied.

Keywords

Acknowledgements

The research work is supported by the National Natural Science Foundation of China (51905513, 52005470), and the Postdoctoral Science Foundation of Zhejiang Province, China (ZJ2020084). The Fundamental Research Funds for the Provincial Universities of Zhejiang (2021YW07).

Citation

Chen, Y., Shang, H., Li, X., Li, Y., Wang, B. and Peng, X. (2022), "The influence of 3-DOF film thickness disturbance on transient performance of typical spiral groove dry gas seals", Industrial Lubrication and Tribology, Vol. 74 No. 1, pp. 45-55. https://doi.org/10.1108/ILT-06-2021-0234

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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