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低温液体储运具有效率高、供气质量好、压力稳定、供气简便及使用安全的特点。液氦供气杜瓦不仅具有常规杜瓦的要求，而且气压可控。本文主要论述了１０００Ｌ液氦供气杜瓦的工作原理和结构设计，及主要研制工艺和试验情况，介绍了液氦供气系统的特点。产品于１９９７年９月投入正常使用，全部性能指标达到设计要求，液氦日蒸发率为０９％。
Cryogenic liquid storage and transportation with high efficiency, gas supply, pressure stability, gas supply is simple and safe to use. Liquid helium supply Dewar not only has the requirements of conventional Dewar, and the pressure control. This paper mainly discusses the working principle and structure design of 1000L liquid helium gas supply dewar, as well as the main research and experimental conditions, and introduces the characteristics of liquid helium gas supply system. Products put into normal use in September 1997, all the performance indicators meet the design requirements, liquid helium daily evaporation rate of 0 9%.