The gas permeability of solid material is one of the important factors affecting pressure change properties of seal products. In this article, the pressure change analysis based on gas permeation and material outgassing principle of the seal cavity for satellite in-orbit is carried out. Through establishing the pressure change model of the seal cavity, analyzing the gas permeation of the encapsulating material, testing the material outgassing characteristics of the transformer body, this paper obtained the pressure change trend of the transformer sealing cavity during its time in-orbit and predicted the time required for it to escape from the lower pressure discharge region. Furthermore, a comparison of the pressure change time was made between the transformer seal cavity with in-orbit failure and ground simulation analysis of the same design, which shows good agreement. The analysis results can provide guidance for determination of the next power on time of the transformer and be used as a reference for decision makers.

中文翻译：

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基于密封腔气体渗透分析的变压器在轨通电时间预测

固体材料的透气性是影响密封产品压力变化性能的重要因素之一。本文基于卫星在轨密封腔的气体渗透和材料放气原理，进行了压力变化分析。通过建立密封腔的压力变化模型，分析包封材料的气体渗透，测试变压器本体的材料脱气特性，得出了变压器密封腔在运行过程中的压力变化趋势，并进行了预测。从低压排放区域逸出所需的时间。此外，比较了具有在轨失效的变压器密封腔和相同设计的地面仿真分析之间的压力变化时间，显示出良好的协议。分析结果可为确定变压器的下一次通电时间提供指导，并为决策者提供参考。