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液氦温区大型低温制冷系统是指制冷温度在4.5K温区范围,制冷量几百乃至万瓦以上,集流程优化与控制技术、气体轴承透平膨胀机技术、氦压缩机及高效滤油技术、复杂低温系统的集成调控技术为一体的低温制冷系统,可为国家航空航天、大科学装置等高科技领域提供重要的战略支撑。在国家财政部重大科研装备研制项目“液氦到超流氦温区大型低温制冷系统研制”的支持下,中科院理化所自2015年开始研制250W@4.5K低温制冷机,2016年进入关键设备全面研制及
Large-scale low-temperature liquid helium temperature refrigeration system is the temperature range in the 4.5K temperature range, cooling capacity of hundreds or even more than 10,000 watts, set flow optimization and control technology, gas turbine bearing expander technology, helium compressor and efficient oil filter Technology, integrated control of complex cryogenic system as one of the low-temperature refrigeration system for the national aerospace, large scientific installations and other high-tech fields provide an important strategic support. Under the support of the State Ministry of Science and Technology for research and development of major scientific research equipment and the development of a large cryogenic refrigeration system for liquid helium to superfluid helium temperature zone, the Institute of Physics and Chemistry of Chinese Academy of Sciences started to develop 250W@4.5K cryogenic refrigerator from 2015 and entered the key in 2016 Equipment fully developed and