贮箱法兰O形环密封特性研究
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1.航天材料及工艺研究所,北京 100076;2.四川航天烽火伺服控制技术有限公司,成都 611130

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TH136

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Research on Sealing Characteristics of Tank Flange O-ring
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Affiliation:

1.Aerospace Research Institute of Material & Processing Technology,Beijing 100076;2.Sichuan Aerospace Fenghuo Servo Control Technology Corporation,Chengdu 611130

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    摘要:

    利用ABAQUS有限元分析软件,对某航天器贮箱容器GH4169合金O形密封环(简称O形环)进行了有限元分析,探讨了O形环不同压缩率、尺寸、涂层因素对O形环回弹及密封性能的影响。结果表明:压缩率是O形环回弹特性的重要影响因素,不同压缩率下O形环回弹量和回弹率有较大差别;O形环结构尺寸(外径、壁厚)对接触应力等接触性能影响较大;增加涂层有助于提高接触面宽度,但接触应力会有所降低。因此,法兰密封设计中密封环的选取需要综合考虑压缩量、结构尺寸、涂层等影响因素。

    Abstract:

    The finite element analysis of GH4169 alloy O-ring for a tank container of spacecraft was carried out by ABAQUS software, and the effects of different compression ratios, sizes, coating factors on the resilience and sealing performance of O-ring were discussed. The results show that the compression ratio is an important factor affecting the resilience characteristics, and the resilience amounts and resilience rates of the O-ring are quite different under different compression ratios. The contact performance such as contact stress is greatly influenced by the O-ring structure sizes (outer diameter, wall thickness). The coating helps to increase the width of the contact surface, but the contact stress will decrease. Therefore, the selection of the sealing ring needs to comprehensively take the compression, the structure size, the coating and other factors into consideration in the flange sealing design.

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引用本文

赵鸿敬,朱江.贮箱法兰O形环密封特性研究[J].宇航材料工艺,2025,55(1):120-124.

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历史
  • 收稿日期:2022-06-22
  • 最后修改日期:2022-08-09
  • 录用日期:2022-08-10
  • 在线发布日期: 2025-03-04
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