Performance study of arc groove dry gas seal based on orderly micro-structure

Qiong HU; Yan WANG; Rong DAI; Jianjun SUN; Xiaoqing ZHENG

doi:10.11949/j.issn.0438-1157.20180820

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Performance study of arc groove dry gas seal based on orderly micro-structure

Surface and interface engineering | 更新时间：2026-07-24

- Performance study of arc groove dry gas seal based on orderly micro-structure
- CIESC Journal Vol. 70, Issue 3, Pages: 1006-1015(2019)
- 作者机构：
  
  1.淮海工学院机械工程学院，江苏连云港 222005
  2.南京林业大学机械电子工程学院，江苏南京 210037
  3.南京天一航空科技有限公司，江苏南京210012
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180820
  CLC： TH 117
- Received：18 July 2018，
  
  Revised：2018-11-26，
  
  Online First：24 July 2026，
  
  Published：05 March 2019
- 稿件说明：
移动端阅览
胡琼, 王衍, 戴嵘, 孙见君, 郑小清. 基于有序微造型的圆弧线槽干气密封性能分析[J]. 化工学报, 2019, 70(3): 1006-1015

HU Qiong, WANG Yan, DAI Rong, SUN Jianjun, ZHENG Xiaoqing. Performance study of arc groove dry gas seal based on orderly micro-structure[J]. CIESC Journal, 2019, 70(3): 1006-1015
胡琼, 王衍, 戴嵘, 孙见君, 郑小清. 基于有序微造型的圆弧线槽干气密封性能分析[J]. 化工学报, 2019, 70(3): 1006-1015 DOI： 10.11949/j.issn.0438-1157.20180820.

HU Qiong, WANG Yan, DAI Rong, SUN Jianjun, ZHENG Xiaoqing. Performance study of arc groove dry gas seal based on orderly micro-structure[J]. CIESC Journal, 2019, 70(3): 1006-1015 DOI： 10.11949/j.issn.0438-1157.20180820.

摘要

基于激光技术的干气密封开槽方法，提出在圆弧线槽干气密封（A-DGS）槽底开设粗糙度量级的有序微造型，以提高开槽效率、降低成本。采用有限体积法对无微造型圆弧线槽干气密封进行仿真分析，通过与现有文献对比验证了仿真方法的正确性；对微造型结构进行分析和筛选，获得偏移迎风侧与偏移背风侧结构对密封性能影响基本无差，本研究基于偏移背风侧微造型结构进行深入研究；与无微造型圆弧线槽进行对比，分析了不同几何参数和工况参数下的开启力和泄漏量变化情况；最后对各参数的影响程度进行对比分析。结果表明：同工况下，具微造型圆弧线槽干气密封（MA-DGS）的开启力较A-DGS有一定提升，在低速高压及小槽深时提升效果最好；微造型深度和微造型宽间比对干气密封开启力的影响在给定情况下甚于膜厚与转速的影响；密封端面槽型结构优化参数不受槽底微造型设计的影响；基于Taguchi实验设计方法，可以便捷准确地获得不同影响因子的影响程度，帮助工程设计。

Abstract

Based on the dry gas sealing and grooving method of laser technology

it is proposed to establish an orderly micro-shape of roughness level at the bottom of the circular arc groove dry gas seal (A-DGS) to improve the grooving efficiency and reduce the cost. Simulation based on the finite volume method was validated by comparing with other researches. After analyzing and filtering

it can be known there is little difference of seal performance between the windward micro-structure and leeward micro-structure

and then the opening force and leakage with different geometry and operation parameters of A-DGS based on the leeward-structure was studied

and the influence degree of all parameters was finally obtained and analyzed by a design of experiment based on Taguchi approach. The results show that the opening force is improved by orderly micro-structure

especially under low speed

high pressure and small groove depth conditions. Under given conditions

the influence of ratio of micro-structure depth and width on the opening force is greater than the film thickness and speed. The optimal parameters of arc groove structure are not affected by the micro-structure design. Based on Taguchi approach

the influence degree of different impact factors could be easily and accurately obtained

which is helpful for engineering design.

关键词

Keywords

references

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