超导磁体预冷回热组件设计与动态模拟  

Design and dynamic simulation of precooling and reheating components for superconducting magnet

作　　者：王吴凡 李俊杰[1,2] 倪东升[1,2,3] 程月 Wang Wufan;Li Junjie;Ni Dongsheng;Cheng Yue(High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]中国科学院合肥物质科学研究院强磁场科学中心,合肥230031 [2]中国科学技术大学,合肥230026 [3]中国科学院近代物理研究所,兰州730000

出　　处：《低温与超导》2023年第6期26-34,共9页Cryogenics and Superconductivity

基　　金：中国科学院合肥研究院院长基金(No.YZJJ2021QN29)资助。

摘　　要：为满足强流重离子加速器装置(HIAF)中各类超导磁体300~80 K的预冷需求,设计一套液氮为冷源、氦气为循环介质的预冷回热组件。采用Aspen HYSYS对预冷回热组件300~80 K降温过程进行动态模拟,分析了组件模式切换时三种典型工况下系统的瞬态热工水力特性。结果表明预冷回热组件在最大流量30 g/s时可实现温度300~80 K连续可调,调节精度优于±3 K,可为HIAF各类磁体测试提供稳定可靠的冷源。In order to meet the precooling requirements of various superconducting magnets in the Intensive Heavy Ion Ac⁃celerator Facility(HIAF)at 300 K to 80 K,a set of precooling and reheating components with liquid nitrogen as the cold source and helium as the circulating medium was designed.Aspen HYSYS was used to dynamically simulate the 300 to 80 K cooling process of pre-cooling and heating components,and the transient thermal-hydraulic characteristics of the system under three typical working conditions when the component mode was switched were analyzed.The results show that the pre-cooling and re⁃heating components can realize continuous adjustment of temperature from 300 to 80 K when the maximum flow rate is 30 g/s,and the adjustment accuracy is better than±3 K,which can provide a stable and reliable cold source for HIAF various magnet tests.

关 键 词：超导磁体 预冷 氦气 动态模拟 

分 类 号：TB65[一般工业技术—制冷工程]