面向外场1.2 m口径低温面源黑体温控系统设计与实现  

Design and Implementation of Refrigeration System for 1.2 m Diameter Low Temperature Extended Area Blackbody

作　　者：李准[1] 李强 郝小鹏[1] 谢臣瑜 LI Zhun;LI Qiang;HAO Xiaopeng;XIE Chengyu(National Institute of Metrology,Beijing 102200,China)

机构地区：[1]中国计量科学研究院,北京102200

出　　处：《真空与低温》2021年第4期340-345,共6页Vacuum and Cryogenics

基　　金：中国计量科学研究院基金(2019002)。

摘　　要：为满足外场大口径红外测量设备的辐射定标要求,研制了一套直径为1.2 m的大尺寸低温面源黑体系统。该系统主要由低温制冷机组和辐射体两部分组成。通过对系统降温和升温过程的热负荷计算,确定了需要的冷热量;同时配套了精密温度调控系统,制定了黑体温度均匀性保证措施;为测试系统的温度稳定性和均匀性,搭建了测试装置。试验证明,系统的温度稳定性达到±0.20 K,温度均匀性达到±0.60 K,满足设计和实际使用要求。To meet the demand of radiation calibration for large diameter infrared measurement equipment,a low temperature point source blackbody system which diameter is 1.2 m is developed.The system consists of refrigeration unit and radiator two parts.Through the thermal load calculation to cool and heat system,cold and heat required is determined.At the same time,the temperature control system to ensure temperature uniformity are introduced.In order to test the temperature stability and uniformity of the system,a test device is built.The experimental results show that the temperature stability of the system reaches±0.20 K,temperature uniformity reaches±0.60 K,which can meet the design and practical requirements.

关 键 词：制冷系统 面源黑体系统 负荷计算 温控系统 温度稳定性 

分 类 号：TB657[一般工业技术—制冷工程]