基于G-M制冷机的超宽温区高低温系统研制  

The Development of a Super-wide Temperature Range High and Low Temperature System Based on the G-M Refrigerator

作　　者：乔珂 李艳锋 许志勇 胡咸军 QIAO Ke;LI Yanfeng;XU Zhiyong;HU Xianjun(Jiangsu Key Laboratory of Cryogenic Technology and Application,CSSC Pride(Nanjing)Cryogenic Technology Co.,LTD,Nanning 211100,China)

机构地区：[1]江苏省超低温技术及应用重点实验室,中船鹏力(南京)超低温技术有限公司,江苏南京211100

出　　处：《大学物理实验》2025年第2期92-96,共5页Physical Experiment of College

摘　　要：针对目前物理、材料等领域对于高低温连续可控、可调温度环境的原位测试需求,以G-M制冷机为冷源,设计了一种被动式可变热阻结构,本结构在低温下具有较高导热系数、高温下具有较低导热系数,可以实现样品温度在6.2~800 K大温区范围内可控、可调,且不会对G-M制冷机正常运行造成影响。本系统结构简单、运行稳定可靠,且高低温模拟和试验验证结果吻合较好。In response to the current demand for in-situ testing in the fields of physics and materials for a continuously controllable and adjustable temperature environment at both high and low temperatures,a passive variable thermal resistance structure was designed with a G-M cryocooler as the cold source.This structure has a high thermal conductivity at low temperatures and a low thermal conductivity at high temperatures,enabling the sample temperature to be controlled and adjusted within a wide range of 6.2~800 K without affecting the normal operation of the G-M cryocooler.The system is simple in structure,stable and reliable in operation,and the simulation and experimental verification results at both high and low temperatures are in good agreement.

关 键 词：GM制冷机 可变热阻 宽温区 高低温 

分 类 号：TH452[机械工程—机械制造及自动化]