脉管制冷机波纹连管内交变流动及声功传输特性  

Flow Characteristics and Sound Power Transmission Characteristics of Bellows in Pulse Tube Cryocooler

作　　者：木松松 崔晓钰[1] 殷旺 黄政 蒋珍华[2,3] 丁磊 刘少帅[2,3] 吴亦农[2,3] Mu Songsong;Cui Xiaoyu;Yin Wang;Huang Zheng;Jiang Zhenhua;Ding Lei;Liu Shaoshuai;Wu Yinong(School of Energy and Power Engineering,University of Shanghai and Technology,Shanghai,200093,China;Shanghai Institute of Technology and Physics of Chinese Academy of Sciences,Shanghai,200083,China;University of Chinese Academy of Sciences,Beijing,100049,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]中国科学院上海技术物理研究所,上海200083 [3]中国科学院大学,北京100049

出　　处：《制冷学报》2025年第1期71-78,共8页Journal of Refrigeration

基　　金：国家自然科学基金(51806231)资助项目;中国科学院率先行动“引才计划”B类,中国科学院战略性先导科技专项(B类)(XDB35000000,XDB35040102)项目资助

摘　　要：压缩机出口连管作为声功传输部件,其声功损失直接影响脉管制冷机性能。柔性波纹管相比于传统刚性光滑管在应用中可以调整压缩机和冷指相对位置。为研究柔性波纹管对制冷机的影响,采用模拟仿真分析了刚性光滑管和柔性波纹管连管的流动特性,并通过实验验证了两种类型连管对整机性能的影响。模拟结果表明:与刚性光滑管相比,波纹管波纹处出现混合流,产生更多阻力损失;相同入口参数下,出口质量流与压力波幅值更低,声功损失更多。实验结果显示:相同制冷能力时,波纹管所需输入功更多,当制冷温度为37.5 K,制冷量为0.5 W时,波纹管和光滑管输入功分别为119 W和112 W;制冷量为3.0 W时,波纹管和光滑管输入功分别为279 W和259 W。A compressor outlet tube is a transmission component of sound power,and its sound power loss directly affects the performance of pulse tube cryocoolers.Flexible bellows can adjust the relative positions of compressors and cold fingers in applications compared with traditional rigid smooth tubes.This study analyzed the flow characteristics of two types of connected pipes by simulation,and the influence of different types of connected pipes on the performance of the entire machine was verified experimentally to determine the influence of flexible bellows on the cryocooler.The simulation results demonstrated that mixed flow appears at the ripple of the bellows,resulting in greater resistance loss,when compared with a rigid smooth pipe.Under the same inlet parameters,the outlet mass flow and pressure amplitude were lower,and the sound power loss was greater.The experimental results demonstrated that the input power required by the bellows was higher when the cooling capacity was the same.When the cooling temperature was 37.5 K and the cooling capacity was 0.5 Wthe input power of bellows and smooth tubes was 119 W and 112 W,respectively;when the cooling capacity was 3.0 W,the input power of bellows and smooth tubes was 279 W and 259 W,respectively.

关 键 词：脉管制冷机 柔性波纹管 流动特性 声功传输 

分 类 号：TB651[一般工业技术—制冷工程] TB611