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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Scroll Pump Dust Tolerance Test for Martian Atmospheric Acquisition
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Scroll Pump Dust Tolerance Test for Martian Atmospheric Acquisition

机译：火星大气采集用涡旋泵耐尘性试验

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The ability to generate oxygen on the Martian surface will be essential to establishing a human presence on Mars. Flow generating devices such as pumps, compressors, and blowers will be crucial components in Martian atmospheric acquisition and processing systems that need to work reliably during the mission duration. A concern with the reliability of the system is its ability to continue to perform nominally when Martian dust, if it bypasses the inlet filter, enters into the system. A series of tests were conducted to simulate the ingestion of Martian dust on a small scroll pump, similar to the one used on the MOXIE payload. The inlet of the pump was connected to a large volume closed-loop pipe system, known as the Mars atmospheric flow loop, containing pure CO_2 gas at a Martian pressure of 7 torr. A length of stainless steel tubing was extended from the inlet port of the scroll pump, which was mounted outside the flow loop, to the inside volume of the flow loop using a feed-through compression fitting. A steady low-speed flow was generated inside the flow loop to continuously disperse and transport the dust toward the inlet tubing. JSC-Mars 1 Martian simulant was used to challenge the pump. Pump performance parameters such as flow rate, pump speed, pressure, and temperature were monitored during these tests. Samples of the dust entering the pump inlet were taken prior to the exposure tests, using an inline filter element to determine the rate of dust ingestion into the internal components of the pump. After two tests with exposure times of one hour, the data indicated that small changes in pump performance took place under high rates of dust exposure.
机译：在火星表面产生氧气的能力对于在火星上建立人类存在至关重要。泵、压缩机和鼓风机等流量产生装置将是火星大气采集和处理系统的关键部件，这些系统需要在任务期间可靠工作。对系统可靠性的一个担忧是，当火星尘埃绕过入口过滤器进入系统时，系统是否能够继续正常运行。进行了一系列试验，模拟在小型涡旋泵上吸入火星灰尘的情况，类似于在莫西有效载荷上使用的涡旋泵。泵的入口连接到一个大容量的闭环管道系统，称为火星大气流动回路，其中含有火星压力为7托的纯CO_2气体。使用直通式压缩配件，将一段不锈钢管从安装在流量回路外部的涡旋泵进口延伸至流量回路的内部容积。流动回路内产生稳定的低速流，以持续分散灰尘并将其输送至入口管道。JSC火星1号火星模拟物被用来挑战该泵。在这些测试期间，监测了泵的性能参数，如流速、泵速、压力和温度。在进行暴露试验之前，对进入泵入口的灰尘进行取样，使用在线过滤器元件确定吸入泵内部部件的灰尘速率。经过两次暴露时间为1小时的试验后，数据表明，在高粉尘暴露率下，泵的性能发生了微小变化。

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