小型液氮零蒸发系统运行特性研究  

Operating Characteristics Study on Small Liquid Nitrogen Zero Boil-off System

作　　者：张洋洋[1,2] 赵雅楠[1] 闫涛[1] 洪国同[1] 李洋 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国科学院大学,北京100049 [3]国网山东禹城市供电公司,251200

出　　处：《工程热物理学报》2015年第12期2543-2546,共4页Journal of Engineering Thermophysics

摘　　要：本文介绍的小型液氮零蒸发系统主要由脉冲管制冷机、低温热虹吸管和小型液氮杜瓦等部件组成。其既可以用于低温液体的长期无损存储,也可以作为一种稳定可靠的复合式低温冷源;具有超长寿命、温度均匀稳定、无需补液以及隔离振动和电磁干扰等优点。文中简要介绍了该套小型零蒸发系统的结构设计与热设计,重点对该系统的运行特性进行了初步分析和实验研究,包括启动过程、运行动态、稳态平衡以及变工况运行等,掌握了低温液体零蒸发系统的运行规律。The small liquid nitrogen Zero boil-off（ZBO） system mainly consists by a pulse tube cryocooler,a thermosyphon and a liquid nitrogen Dewar.It can be used for long-term lossless storage of cryogenic liquids,and also as a reliable integrated cooling source,with advantages of long lifetime,temperature uniformity and stability,while isolate vibration and electromagnetic interference.The structure and thermal design of the ZBO system is briefly introduced,then with a preliminary analysis and a complete experimental study on the operating characteristics of the system,including the process of startup,dynamics running,homeostasis and the dynamic changes.Eventually the operating characteristics of the cryogenic liquids ZBO system are known.

关 键 词：零蒸发系统 脉冲管制冷机 热设计 无损存储 

分 类 号：TB658[一般工业技术—制冷工程]