高温超导电缆室温及液氮温度机械拉伸性能研究  

Mechanical Extension Property of High-Temperature Superconducting Cable at Room Temperature and 77 K

作　　者：黄逸佳 郑健 陈志越 Huang Yijia;Zheng Jian;Chen Zhiyue(Shanghai Electric Cable Research Institute Co.,Ltd,Shanghai 200093,China;State Grid Shanghai Municipal Electric Power Company,Shanghai 200122,China)

机构地区：[1]上海电缆研究所有限公司,上海200093 [2]国网上海市电力公司,上海200122

出　　处：《稀有金属材料与工程》2020年第11期3870-3874,共5页Rare Metal Materials and Engineering

基　　金：国家电网公司科技项目(520940180014)。

摘　　要：为研究高温超导电缆室温及液氮温度下的机械拉伸性能,分别对10m短段高温超导电缆和10m短段铜衬芯在室温及液氮温度(T=77 K)下的受力拉伸性能进行了实验研究。通过测试分别得到了两者在室温和T=77 K的应力应变曲线,并根据应力应变关系得到了两者在相应温度下的杨氏模量。同时,还针对10 m短段单芯高温超导电缆及10 m短段铜衬芯在受力情况下的降温收缩情况进行了研究,并得到了在负载为2000 kg的情况下,两者从室温将至液氮温度时的收缩变化量及收缩率,为后续电缆敷设施工的裕度选择提供一定的参考依据。In order to investigate the mechanical extension property of high-temperature superconducting(HTS)cable at room temperature and 77 K,the mechanical extension properties were studied of 10 m HTS cable and 10 m copper core at room temperature and 77 K.The stress-stain curves and Young’s modulus of the samples at corresponding temperature were obtained by experiments.Meanwhile,the contraction of 10 m HTS cable and 10 m copper core was investigated in a cooling process from room temperature to 77 K with tensile load of 2000 kg.The experimental results could provide references to the determination of margin of cable-laying.

关 键 词：高温超导电缆 机械拉伸性能 应力应变关系 杨氏模量 收缩率 

分 类 号：TM249.7[一般工业技术—材料科学与工程]