高场HTS导体测试平台氦低温系统流程分析  

Process analysis for helium cryogenic system of high magnetic field HTS conductor test facility

作　　者：蒋皓天 李俊杰[1,2] Jiang Haotian;Li Junjie(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)

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

出　　处：《低温与超导》2024年第4期24-30,共7页Cryogenics and Superconductivity

基　　金：国家重点研发计划项目(2022YFE03150104)资助。

摘　　要：为了提高高温超导导体进行性能测试时的稳定性和全面性,针对高场HTS(High-Temperature Superconducting)导体测试平台氦低温系统调控参数的复杂性,对低温系统中的部件进行工况分析,采用梯度下降法,通过MATLAB编程的方式实现了低温系统运行流程的模拟,设计了系统在不同测试温度下的最佳运行模式及流量等关键参数的调控方案。研究结果表明:在相同测试温度下,输入系统的氦气压力为5 bar时系统所需流量最小,随着测试温度升高,输入系统的氦流量先增大再减小。对低温系统最佳运行模式下各参数的分析可为进行超导导体性能测试实验时低温系统调控提供参考。In order to improve the stability and comprehensiveness of the performance test of HTS conductor,the working condition of the components in the cryogenic system was analyzed,gradient descent method was used to implement the running process of the cryogenic system by MATLAB programming,the optimal operating mode and the control scheme of key parameters such as flow rate at different test temperature were determined in view of the complexity of parameters of the high magnetic field HTS conductor test platform.The results show that at the same test temperature,the system requires the minimum flow when the initial helium pressure is 5 bar,and the helium flow increases and then decreases with the increase of test temperature.The analysis of each parameter in the optimal operation mode of the cryogenic system can provide a reference for the control of cryogenic system in the test experiment of superconducting performance.

关 键 词：超导测试 氦低温系统 流程分析 梯度下降法 

分 类 号：TB65[一般工业技术—制冷工程]