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

Mu Songsong; Cui Xiaoyu; Yin Wang; Huang Zheng; Jiang Zhenhua; Ding Lei; Liu Shaoshuai; Wu Yinong

doi:10.12465/j.issn.0253-4339.2025.01.071

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

更新时间：2025-01-23

- Flow Characteristics and Sound Power Transmission Characteristics of Bellows in Pulse Tube Cryocooler
- Journal of Refrigeration Vol. 46, Issue 1, Pages: 71-78(2025)
- 作者机构：
  
  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
- 作者简介：
  
  Liu Shaoshuai, male, associate researcher, Shanghai Institute of Technology and Physics of Chinese Academy of Sciences, 86-13167065771, E-mail: liushaoshuai@mail.sitp.ac.cn. Research fields: space cryogenic refrigerator.
- 基金信息：
  
  the National Natural Science Foundation of China(51806231)
- DOI：10.12465/j.issn.0253-4339.2025.01.071
  CLC： TB651;TB61⁺1
- Received：18 October 2023，
  
  Revised：22 November 2023，
  
  Accepted：2024-01-18，
  
  Published：16 February 2025
- 稿件说明：
移动端阅览
Mu Songsong, Cui Xiaoyu, Yin Wang, et al. Flow Characteristics and Sound Power Transmission Characteristics of Bellows in Pulse Tube Cryocooler[J]. Journal of refrigeration, 2025, 46(1): 71-78.
DOI：

Mu Songsong, Cui Xiaoyu, Yin Wang, et al. Flow Characteristics and Sound Power Transmission Characteristics of Bellows in Pulse Tube Cryocooler[J]. Journal of refrigeration, 2025, 46(1): 71-78. DOI： 10.12465/j.issn.0253-4339.2025.01.071.

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。

Abstract

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

Keywords

references

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