大冷量多级推移活塞型脉管制冷机  

Multistage displacer type pulse tube refrigerator with large cooling power

作　　者：杨斌 刘知非 朱绍伟[1] Yang Bin;Liu Zhifei;Zhu Shaowei(Institute of Refrigeration and Cryogenics,School of Mechanical Engineering,Tongji University,Shanghai 201804)

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《低温工程》2024年第3期87-92,共6页Cryogenics

基　　金：国家重点研发计划(No.2022YFB4002802);国家自然科学基金(No.52076151)。

摘　　要：使用阶梯推移活塞加惯性管的复合调相方式结合二者的调相优势,改善非最佳匹配尺寸下推移活塞脉管制冷机性能。对阶梯推移活塞加惯性管的复合调相方式的双级脉管制冷机进行了实验研究。在第二级采用复合调相结构时,在充气压力2 MPa,运行频率51 Hz时,得到了86.4 K/22.9K的无负荷温度,在1 251 W输入功时,第二级在34.7 K得到5 W的冷量,为推移活塞双级脉管制冷机的性能优化提供了参考。An experimental study of a two-stage pulse tube refrigerator was carried out by u-sing step piston and inertance tube as phase shifters,which can combine the advantages of two phase shifters to improve the performance of refrigerator with a non-optimal matching displacer.A no-load temperature of 86.4 K/22.9 K is achieved under charging pressure of 2 MPa and operat-ing frequency of 51 Hz and using hybrid phase shifters.It can provide 5 W cooling power at 34.7 K with 1251 W electric input power.It provides a reference for the performance optimization of the two-stage pulse tube refrigerator with hybrid phase shifters.

关 键 词：推移活塞 双级脉管制冷机 复合调相 

分 类 号：TB651[一般工业技术—制冷工程]