Research on thermal-mechanical coupling characteristics of self-impact seal and design of cooling structure

WANG Yan; SHEN Doudou; CHEN Miaomiao; LI Decai; NIU Shuoshuo; WANG Yutong; ZHANG Nannan; GONG Xinyu

doi:10.11949/0438-1157.2026267

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Research on thermal-mechanical coupling characteristics of self-impact seal and design of cooling structure

更新时间：2026-05-08

- Research on thermal-mechanical coupling characteristics of self-impact seal and design of cooling structure
- CIESC Journal (2026)
- 作者机构：
  
  1.江苏海洋大学机械工程学院，江苏连云港 222005
  2.宁波方力密封件有限公司，浙江宁波 315191
  3.清华大学高端装备界面科学与技术全国重点实验室，北京 100084
  4.江苏中科能源动力研究中心，江苏连云港 222042
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.2026267
  CLC： TH117
- Received：28 February 2026，
  
  Revised：2026-05-07，
  
  Accepted：08 May 2026，
- 稿件说明：
移动端阅览
WANG Yan, SHEN Doudou, CHEN Miaomiao, et al. Research on thermal-mechanical coupling characteristics of self-impact seal and design of cooling structure[J/OL]. CIESC Journal, 2026.
DOI：

WANG Yan, SHEN Doudou, CHEN Miaomiao, et al. Research on thermal-mechanical coupling characteristics of self-impact seal and design of cooling structure[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.2026267.

摘要

针对自冲击密封在高速、高压极端工况下，因热、力载荷引起的温度分布不均以及密封结构变形问题，系统分析自冲击密封热-力耦合特性，并设计一种新型密封静环侧冷却结构。通过建立热-流-固耦合模型，并利用ANSYS Workbench进行数值仿真，探究密封环在不同转速和入口压力下的温度分布与变形规律，对比分析冷却前后最高温度与最大变形量。结果表明：转速是影响温度分布的主导因素，高温区域随转速升高由低压出口侧转移至动环最大向径处；热力耦合总变形随转速升高显著增大，其中力变形占比随转速增加而上升，但热变形始终占据主导；入口压力对温度分布与变形量的影响较小。所设计的冷却结构降温与抑制变形效果显著，可使密封环局部最高温度降低56.6%，最大变形量减少14.7%，满足自冲击密封的温度性能设计需求。该研究为自冲击密封的热管理设计提供理论依据与工程参考，有助于提升密封系统的热稳定性与运行可靠性。

Abstract

To address the issues of uneven temperature distribution and structural deformation in self-impact seals under extreme high-speed

high-pressure conditions caused by thermal and mechanical loads

this study systematically analyzes their thermal-mechanical coupling characteristics and designs a novel cooling structure for the stationary ring side of the seal. By establishing a thermal-fluid-solid coupled model and conducting numerical simulations using ANSYS Workbench

the temperature distribution and deformation patterns of the seal ring under varying rotational speeds and inlet pressures were investigated. Comparative analysis was performed on the maximum temperature and deformation before and after cooling. The results indicate that rotational speed is the dominant factor affecting temperature distribution; as speed increases

the high-temperature zone shifts from the low-pressure outlet side to the point of maximum radial displacement of the rotating ring. The total thermo-mechanical deformation increases significantly with rising speed

with the proportion of mechanical deformation rising as speed increases

though thermal deformation remains dominant. Inlet pressure has a minor effect on temperature distribution and deformation. The designed cooling structure demonstrated significant effectiveness in reducing temperature and suppressing deformation

lowering the local maximum temperature of the sealing ring by 56.6% and reducing the maximum deformation by 14.7%

thereby meeting the thermal performance design requirements for self-impact seals. This research provides theoretical foundations and engineering references for thermal management design in self-impact seals

contributing to enhanced thermal stability and operational reliability of sealing systems.

关键词

Keywords

references

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