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气冷电流引线被广泛的应用于许多大型超导磁体及其它一些超导装置中.由于引线实际制作过程中的差异或者超导装置本身的一些问题,正负两个引线之间或者同一引线的不同流道之间都存在着冷却气流分配上的不均衡.超导装置中除电流引线外的其他低温热源也可能使流经引线的冷却气流处于非正常状态.所有这些都会使电流引线的实际工作状况偏离最优化设计.本文用数值模拟的方法对非最优化冷却气流条件下的电流引线运行状况进行了研究,分析了冷却气流偏离最优化程度与引线实际运行参数之间的影响关系.
Air-cooled current leads are widely used in many large superconducting magnets and some other superconducting devices.Due to differences in the actual manufacturing process of the leads or some problems with the superconducting device itself, the positive and negative leads between two leads or the same lead There is an imbalance in the cooling airflow distribution between the different flow paths. Other low temperature heat sources in the superconducting device other than the current lead may also cause the cooling airflow through the lead to be in an abnormal state, all of which will make the actual The working conditions deviate from the optimal design.In this paper, the current lead operating conditions under the non-optimal cooling airflow are studied by numerical simulation, and the relationship between the optimal deviation of the cooling airflow and the actual operating parameters of the lead is analyzed.