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探月工程(三期)项目提出了在月面进行至少2 m深度的钻取采样任务,前期需要在地面进行模拟月面钻进过程热特性的研究,为此本文发明了一套月面真空环境模拟装置。根据模拟月壤钻进试验的要求,设计了一种可从底部抽气的三段式可多次拆装的真空罐结构。考虑到模拟月壤的颗粒大小和快速抽真空的要求,设计了一种筛网状具有多层过滤结构的月壤筒。根据在真空度不变的条件下可进行连续多次钻进试验的要求,设计了可从外部操作的具有缺齿结构的月壤筒转动机构。由真空度要求和可耐粉尘的特性要求,选取了三级扩散泵组。实验表明,在不放置模拟月壤的情况下,本环境模拟装置中的真空度可达10请下载后查看，本文暂不支持在线获取查看简介。(-1)Pa,在放置模拟月壤的情况下,真空度可达7 Pa,能够满足模拟月面钻进过程热特性试验的要求。此外,通过测量抽真空过程中真空度随时间的变化情况还得出了模拟月壤出气量曲线,对模拟月壤真空系统的实验应用具有重要价值。
The lunar exploration project (phase III) proposed to drill at least 2 m depth on the lunar surface, and the thermal characteristics of the lunar surface drilling process must be studied at the early stage. Therefore, a lunar surface vacuum Environmental simulation device. According to the requirements of simulated lunar drilling test, a three-stage vacuum tank structure which can be disassembled and disassembled from the bottom was designed. Considering the particle size of simulated lunar soil and the requirement of rapid vacuum evacuation, we design a silt-shaped moon-shaped cylinder with multi-layer filtration structure. According to the requirement of continuous drilling test under the condition of constant vacuum, a rotator mechanism with moon-tooth structure can be designed which can be externally operated. By the degree of vacuum requirements and dust-resistant characteristics of the request, selected three diffusion pump group. Experiments show that in the case of simulated lunar soil is not placed, the vacuum in the environment simulation device up to 10 Please download and view, this article does not support online access View profile. (-1) Pa. Under the conditions of simulated lunar soil, the vacuum degree can reach 7 Pa, which can meet the requirements of the thermal characteristics test of the simulated lunar surface drilling process. In addition, the curve of the monthly lunar air outflow was obtained by measuring the change of vacuum degree with time in the process of evacuation, which is of great value for the experimental application of the simulated lunar vacuum system.