密封表面微结构特征对流电阻和接触面之间的泄漏的影响
Przemysław Jaszak1, Anna Piwowar1, Marcin Bieganowski1
1Faculty of Mechanical and Power Engineering, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
Materials (Basel, Switzerland)
|October 16, 2025
概括
这项研究表明,微结构封装显著减少静态密封的泄漏. 这些受特斯拉门启发的工程表面提高了密封性能,特别是在较低的压力下.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 静态密封,如密封,是防止各种机械系统中流体泄漏的关键组件.
- 传统的密封设计往往面临着在低紧压力下实现最佳密封的限制.
- 表面微结构为增强密封能力提供了一种新的方法.
研究的目的:
- 为了研究静态密封的密封性能与几何设计的表面微观结构.
- 用数值和实验方法评估微观结构几何学对泄漏率的影响.
- 了解负责改善密封的潜在机制.
主要方法:
- 计算流体动力学 (CFD) 模拟被用于模拟微结构间隙内的流体流量和压力分布.
- 进行了参数研究,以评估关键几何参数 (间隙宽度,包装密度,高度) 对泄漏的影响.
- 实验测试使用结构化和准光滑封装进行,以验证模拟结果并评估现实世界的性能.
主要成果:
- 差价合约模拟表明,随着微观结构的引入,泄漏率显著降低.
- 减少泄漏的最有影响力的几何参数被确定为间隙宽度,包装密度和微型突出高度.
- 实验结果证实,结构的密封性能优于准光滑,特别是在较低的接触压力下.
结论:
- 受到特斯拉门的启发,表面微观结构有效地提高了静态密封的密封性能.
- 改善的密度归因于局部接触压力强化和微型突出引起的流动效应.
- 这项技术提供了一种有前途的方法,可以改善侧边螺栓接头的密封性,即使在较低的紧固负载下.
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