预冷波纹管自调式节流制冷器启动时间的实验研究  

EXPERIMENTAL STUDY ON COOL-DOWN TIME OF SELF-REGULATED JOULETHOMSON COOLER WITH PRECOOLER

作　　者：李家鹏[1] 夏丽昆 赵江来 陈晓燕 赵森 周建[1] 刘春[1] 刘昆[1] LI Jia-peng;XIA Li-kun;ZHAO Jiang-lai;CHEN Xiao-yan;ZHAO Sen;ZHOU Jian;LIU Chun;LIU Kun(Kunming Institute of Physics,Kunming 650223;Military Commissary Department Garrisoned in Kunming of Chongqing Commissary Bureau,Kunming 650223,China))

机构地区：[1]昆明物理研究所,昆明650223 [2]重庆军代局驻昆明地区军代室,昆明650223

出　　处：《真空与低温》2018年第1期31-35,共5页Vacuum and Cryogenics

摘　　要：与斯特林制冷机相比,微型节流制冷器以体积小、质量轻、启动快、高可靠性、成本低、无运动部件等优点,在红外制导武器系统中得到广泛应用。为了优化制冷器的启动时间和耗气量,设计了一种带有预冷级波纹管自调式快速节流制冷器。通过实验对比,该制冷器的启动时间比单级自调式节流制冷器快,耗气量比预冷级非自调式制冷器小。制冷器在常温下的启动时间为12 s@90 K、15 s@80 K,同时耗气量也得到了优化。Compared to the Stirling cooler,miniature Joule-Thomson cooler(J-T cooler)has the advantages of small size,light weight,short cool-down time,high reliability,low cost and the cold end without moving part,which is wildly applied in infrared seeker.In order to optimize cool-down time and gas consumption,designing a bellows self-regulated fast-cool-down J-T cooler with precooler.Compared to other kinds of J-T coolers by experiment,the J-T cooler with precooler cool down faster than the single self-regulated J-T cooler,and its’gas consumption is less than the non-self regulated J-T cooler with precooler.The cool down time of the J-T cooler with precooler is 12 s@90 K,15 s@80 K,and its’gas consumption is optimized.

关 键 词：预冷 波纹管 节流制冷器 启动时间 

分 类 号：TB65[一般工业技术—制冷工程]