摘要
目的研究温度-湿度-高度环境对航天火工装置密封性能的影响机理。方法调研"温度-湿度-高度"环境的由来,对比不同标准中试验方法的差异,分析其作用过程,并分析两起因温度-湿度-高度环境导致的火工装置失效案例的故障原因及机理。结果由于低温、低压与高温、高湿多次相互转化的过程,装置表面的冷凝水因"负压"特性被"压"入装置内部,形成积留水。多次循环后,内部积留水情况越发严重。故障案例表明,温度-湿度-高度环境,容易造成装置密封失效,进而造成工作失效。结论航天火工装置需要采取有效的密封措施,并按照标准要求进行温度-湿度-高度考核,以检验装置的密封性能,并确保装置的贮存寿命。
The sealing failures in the temperature-humidity-altitude environment has occurred in explosive devices. Therefore, this paper studied the mechanism of temperature-humidity-altitude environment on the sealing performance of aerospace explosive devices. The origin of temperature-humidity-altitude environment was investigated, the differences of test methods in different standards were compared, and the failure causes and mechanisms of two cases of explosive device failure caused by temperature-humidity-altitude environment were analyzed. Due to the process of mutual transformation between low temperature & low pressure and high temperature & high humidity for many times, the condensate water on the surface was “pressed”into the interior of device because of the “negative pressure” characteristic, forming the accumulated water. After multiple cycles, the internal accumulated water became more serious. The fault case shows that the temperature-humidity-altitude environment, which tends to cause the sealing failure of the device, and in turn causes the operational failure. Therefore, it is necessary to take effective sealing measures for aerospace explosive devices and conduct temperature-humidity-height assessment according to the standard requirements to test the sealing performance of the devices and ensure the storage life of the devices.
作者
唐科
汪锐琼
曲展龙
陈楷
赵宇辉
TANG Ke;WANG Rui-qiong;QU Zhan-long;CHEN Kai;ZHAO Yu-hui(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)
出处
《装备环境工程》
CAS
2022年第2期7-13,共7页
Equipment Environmental Engineering
基金
国家自然科学基金联合基金(U1737214)
装备发展部共用技术(41419110206)。
关键词
航天火工装置
温度-湿度-高度
密封失效
药剂受潮
贮存寿命
密封改进
aerospace explosive devices
temperature-humidity-altitude
seal failure
explosive material damp
storage life
seal improvement
