China Aerospace News Network recently Institute of Space Medicine, Institute of Space and Fifth Committee assembly and environmental engineering commitment to the development of extravehicular spacesuit experimental cabin high vacuum cryogenic pump project carried out acceptance, experts and leaders listened attentively to the technical staff on low temperature Pump summary report and unanimously adopted the acceptance of the cryogenic pump, the acceptance group fully affirmed the technical team's storming battle results, and the development of the Ministry of the cryogenic pump performance indicators spoke highly of. As the spacecraft environment simulation equipment needs to be clean and oil-free, large-diameter cryogenic pumps are the best choice for a variety of gases, especially those requiring a large pumping speed of oxygen. Originally imported pumps were used. However, as the United States, Japan and other countries Have embargoed this equipment, which requires taking the road of independent research and development. After receiving the task, technicians first completed the review and design work by absorbing, summarizing, comparing, innovating and theoretically verifying, and then successfully completed the development of the test system and repeated comparison and verification tests of various test methods. Then, the pump Body installation, coupling and cryogenic pump performance parameters test, the results show that all aspects of excellent performance. After 507 space shuttle service laboratories cabin intermodal system, the cryogenic pump is operating normally. The results show that the performance indexes of 4 "Shenzhou" brand cryogenic pumps all meet the design requirements and the performance indexes reach the same level of the same caliber pumps in developed countries. The development of the cryogenic pump broke the blockade of the technologies of the United States, Japan and other countries in obtaining the vacuum pumping technology of large pumping speed in China. For the first time in China, it developed the large-caliber high-precision cryogenic pump performance testing equipment combining the flow method and the flow guiding method. Domestic Large-caliber Cryogenic Pump Performance Test Method. The new design, first adopted, greatly increased the pumping speed of cryogenic pumps. The development of heavy arduous tasks, Space and Fifth Hospital General Assembly and Environmental Engineering Department to overcome the difficulties, under the leadership of the Ministry, the brothers unit coordinated with the completion of the development of four cryogenic pumps on schedule. During the research and development, research personnel live in the field for a long time to ensure that the task is completed. The concerted efforts of the researchers made the project a success. ice cream cone machine, waffle cone maker, automatic sugar cone making machine Hommy Enterprise (Xinhui) Co. Ltd. , https://www.hommymachine.com
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