| 摘要: |
| 低温系统是该试验装置的一个主要分系统,采用增压过冷液氮冷却高温超导电缆及其电流引线,是国内首次采用过冷液氮循环冷却高温超导电缆的低温系统.低温系统包括两大部分:过冷液氮循环部分和制冷部分.在过冷液氮循环部分,以低温泵的扬程作为循环流动动力,液氮通过与制冷部分的热交换,获取冷量,被输送到高温超导电缆低温容器和终端,液氮通过与电缆的换热释放其冷量,最后回到气液分离器,进入下一个循环过程.制冷部分采用液氮减压降温获取冷量,其最大制冷量3.3kW,液氮消耗72 L/h. |
| 关键词: 热工学 低温系统 实验研究 高温超导电缆 过冷液氮 |
| DOI： |
| 修订日期：2004-04-23
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| 基金项目:国家高技术研究发展计划(863计划) |
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| Cryogenic System of the 10m-10.5kV/1.5kA Three-phase High Temperature Superconducting Cable Plant |
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| Abstract: |
| one of the main sub-systems of the experimental device, a cryogenic system uses the sub-cooled liquid nitrogen (LN 2) pressurized to cool the HTS cable and its terminations. This cryogenic system has the sub-cooled LN 2 cycle part and the refrigeration part. The former applies a cryogenic pump to force LN 2 through a heat exchanger in the sub-cooler, the three-phase HTS cable cryostats, and a LN 2 gas-liquid separator. The latter is designed for getting the cooling capacity by decompressing LN 2 to sub-atmosphere, and its maximum cooling capacity is about 3.3 kW and the LN 2 consumed is 72 L/h. |
| Key words: Pyrology,cryogenic system,experimental research,HTS cable,sub-cooled LN 2 |
