辽宁石油化工大学学报 ›› 2024, Vol. 44 ›› Issue (3): 70-79.DOI: 10.12422/j.issn.1672-6952.2024.03.010

• 机械工程 • 上一篇    下一篇

横纵有序微纹理设计的干气密封T型槽微纹理变量分析

王竞墨(), 吴仁德(), 穆长生, 崔文姝, 丁赫艺, 孙宏伟   

  1. 中国石油辽宁丹东销售分公司,辽宁 丹东 118000
  • 收稿日期:2023-09-14 修回日期:2023-10-19 出版日期:2024-06-25 发布日期:2024-06-17
  • 通讯作者: 吴仁德
  • 作者简介:王竞墨(1995-),男,硕士,从事流体动密封方面的研究;E-mail:871957056@qq.com
  • 基金资助:
    甘肃省优秀研究生“创新之星”项目(2022CXZX-419)

Analysis of Microtexture Variables in T-shaped Grooves of Dry Gas Seals with Horizontal and Vertical Ordered Microtexture Design

Jingmo WANG(), Rende WU(), Changsheng MU, Wenshu CUI, Heyi DING, Hongwei SUN   

  1. PetroChina Liaoning Dandong Marketing Company,Dandong Liaoning 118000,China
  • Received:2023-09-14 Revised:2023-10-19 Published:2024-06-25 Online:2024-06-17
  • Contact: Rende WU

摘要:

为探究有序微纹理设计对干气密封T型槽动压效果的影响,基于气膜润滑原理,采用有限差分法,研究了微纹理排列间距、微纹理长度、T型槽基底长宽增幅、微纹理梯度倾斜角度等有序微纹理变量对密封参数的影响,并对四种微纹理的设计变量进行了对比。结果表明,T型槽的微纹理变量与T型槽的结构参数一样能改变槽的动压效应,但不改变干气密封槽型的动力学规律; 微纹理变量对干气密封T型槽开启力的影响按微纹理梯度倾斜角度>微纹理排列间距>微纹理长宽>T型槽基底长宽增幅的顺序减小;对泄漏量的影响按微纹理长宽>微纹理排列间距>T型槽基底长宽增幅>微纹理梯度倾斜角度的顺序减小。研究结果对双向旋转式端面气膜密封的优化和设计具有一定的借鉴作用。

关键词: 干气密封, 双向旋转式T型槽, 有限差分法, 有序微纹理设计, 密封性能

Abstract:

To investigate the influence of ordered micro texture design on the dynamic pressure effect of dry gas seal T‐groove, based on the principle of gas film lubrication, finite difference method was used to study the effects of ordered micro texture variables such as micro texture arrangement spacing, micro texture length, T‐shaped groove base length and width, and micro texture gradient inclination angle on sealing parameters. The design variables of four types of micro textures were compared. The results show that the micro texture of the T‐shaped groove can change the dynamic pressure effect of the groove itself, just like the structural parameters of the T‐shaped groove, but it does not change the dynamic law of the dry gas seal groove itself. The influence of microtexture variables on the opening force of T-shaped grooves in dry gas seals: microtexture gradient inclination angle>microtexture arrangement spacing>microtexture length and width>T-shaped groove base length and width amplification; The impact on leakage rate: microtexture length and width>microtexture arrangement spacing>T-shaped groove base length and width amplification>microtexture gradient inclination angle. The research results have certain reference value for the optimization and design of bi‐directional rotating end face gas film seals.

Key words: Dry gas seal, Bidirectional rotating T-shaped groove, Finite difference method, Ordered micro texture design, Sealing performance

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引用本文

王竞墨, 吴仁德, 穆长生, 崔文姝, 丁赫艺, 孙宏伟. 横纵有序微纹理设计的干气密封T型槽微纹理变量分析[J]. 辽宁石油化工大学学报, 2024, 44(3): 70-79.

Jingmo WANG, Rende WU, Changsheng MU, Wenshu CUI, Heyi DING, Hongwei SUN. Analysis of Microtexture Variables in T-shaped Grooves of Dry Gas Seals with Horizontal and Vertical Ordered Microtexture Design[J]. Journal of Liaoning Petrochemical University, 2024, 44(3): 70-79.

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               https://journal.lnpu.edu.cn/CN/Y2024/V44/I3/70