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Study on the hydrodynamic performance of two typical groove liquid film seals considering cavitation

Xiao-Ying Li (College of New Energy, China University of Petroleum (East China), Qingdao, China)
Zhen-Tao Li (School of Intelligent Manufacturing and Control Engineering, Shandong Institute of Petroleum and Chemical Technology, Dongying, China, and)
Mu-Ming Hao (College of New Energy, China University of Petroleum (East China), Qingdao, China)
Qing-Yang Wang (College of New Energy, China University of Petroleum (East China), Qingdao, China)
Zeng-Li Wang (College of New Energy, China University of Petroleum (East China), Qingdao, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 22 March 2023

Issue publication date: 4 April 2023

110

Abstract

Purpose

The purpose of this paper is to investigate the hydrodynamic performance of liquid film seals with oblique grooves (OGs) and spiral grooves (SGs), considering cavitation, compare and analyze the differences between them.

Design/methodology/approach

Considering cavitation effect, the incompressible steady-state Reynolds equation was solved to obtain the sealing performance parameters of the liquid film seal with oblique groove and spiral groove.

Findings

The hydrodynamic performance of oblique groove seal (OGS) and spiral groove seal (SGS) shows a similar trend with the change of operating parameters. When the groove angle is less than 20°, the load-carrying capacity of SGS is better than that of OGS, while when the groove angle continues to increase, the hydrodynamic performance of OGS is slightly better than that of SGS, and more suitable for use under small differential pressure and high speed.

Originality/value

The hydrodynamic characteristics of liquid film seals with oblique grooves and spiral grooves considering cavitation effect were studied, which provides a theoretical reference for the application of oblique groove seal.

Keywords

Acknowledgements

This work was supported by the National Key R&D Program of China (NO. 2020YFB2010002) and the National Natural Science Foundation of China (NO. 51975585).

Citation

Li, X.-Y., Li, Z.-T., Hao, M.-M., Wang, Q.-Y. and Wang, Z.-L. (2023), "Study on the hydrodynamic performance of two typical groove liquid film seals considering cavitation", Industrial Lubrication and Tribology, Vol. 75 No. 3, pp. 315-324. https://doi.org/10.1108/ILT-11-2022-0332

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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