Leakage Model of Metal Static Seal with Two Rough Surfaces Based on the Theory of Porous Medium

被引：0
|
作者：
Cui Y. [1 ]
Yu Y. [1 ]
Zhang H. [1 ]
Zhong J. [2 ]
机构：
[1] Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian
[2] Merchant Marine College, Shanghai Maritime University, Shanghai
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2022年 / 58卷 / 21期
关键词：
leakage model; metal static seal; porous medium; rough surface; three-dimensional percolation grid model;
D O I：
10.3901/JME.2022.21.215
中图分类号：
学科分类号：
摘要：
The micro-geometric topography of the rough surface is an important factor affecting the leakage characteristics of static seals. According to the point cloud data of the rough surface, the rough surface is discretized, and the sealing interface consist of two rough surfaces is equivalent to a three-dimensional percolation grid model. The porosity and permeability of the sealing interface are calculated based on the theory of porous medium, and then the leak model of the sealing interface is proposed. Furthermore, a test rig for measuring the leakage rate of metal static seal is set up, the leakage model is proved to be reasonable and correct by sealing experiment. The influences of the direction of the surface texture, the fluctuation frequency of the rough surface and the sealing material on the leak rate are studied. The numerical simulation shows that the sealing interface consisted of anisotropic surfaces has best sealing performance; the fluctuation frequency of the surface is positively correlated with the sealing performance; materials with low hardness are easy to achieve effective sealing; in the case of a high contact load, the effect of surface topography on the leak rate is negligible. © 2022 Editorial Office of Chinese Journal of Mechanical Engineering. All rights reserved.
引用
收藏
页码：215 / 224
页数：9
相关论文
共 18 条
  • [1] HU Songtao, HUANG Weifeng, SHI Xi, Et al., Review on mechanical seals using a bi-Gaussian stratified surface theory, Journal of Mechanical Engineering, 55, 1, pp. 91-105, (2019)
  • [2] WANG Yuming, YANG Huixia, JIANG Nan, Fluid seals technique[J], Hydraulics Pneumatics & Seals, 3, pp. 1-5, (2004)
  • [3] PERSSON B N J，, ALBOHR O, Et al., Contact area between a viscoelastic solid and a hard，randomly rough，substrate[J], The Journal of Chemical Physics, 120, pp. 8779-8793, (2004)
  • [4] PERSSON B N J，, PRODANO N, KRICK B A, Et al., Elastic contact mechanics：Percolation of the contact area and fluid squeeze-out[J], The European Physical Journal E, 35, pp. 1-17, (2012)
  • [5] MAYER E., Mechanical seals 3rd[M], (1977)
  • [6] PERSSON B N J，, YAN C., Theory of the leak-rate of seals[J], Journal of Physics，Condensed Matter, 20, (2008)
  • [7] LORENZ B, PERSSON B N J., Leak rate of seals：Effective-medium theory and comparison with experiment[J], Eur. Phys. J. E. Soft Matter, 31, pp. 159-167, (2010)
  • [8] BOTTIGLIONE F, CARBONE G, MANTRIOTA G., Fluid leakage in seals ： An approach based on percolation theory[J], Tribology International, 42, pp. 731-737, (2009)
  • [9] Jianjun SUN, Chenbo MA, Jianhua LU, Et al., A leakage channel model for sealing interface of mechanical face seals based on percolation theory[J], Tribology International, 118, pp. 108-119, (2018)
  • [10] Xingya NI, Chenbo MA, SUN Jianjun, Et al., A leakage model of contact mechanical seals based on the fractal theory of porous medium[J], Coatings, 11, 1, (2020)
12