| 摘要: |
| 中心螺线管线圈（Central Solenoid, CS）作为中国聚变工程实验堆CFETR装置的核心部件之一，是由内Nb3Sn线圈，外Nb3Sn线圈以及NbTi线圈构成，采用4.5K超临界氦迫流冷却，迫流氦在管内电缆导体(Cable-in-Conduit Conductor, CICC) 中流动会受摩擦力影响产生压力损失和能量损耗，从而影响线圈的正常工作。本文介绍了在室温下采用氮气进行压降-流量测试实验，使用Katheder经验公式进行理论压降计算，计算结果与测量值进行对比，从对比结果来看，误差与流量成正相关；分析了该CICC内的摩擦特性，并拟合出相应的经验公式。 |
| 关键词: CS模型线圈 CICC导体 压降测试 摩擦系数 |
| DOI： |
| 投稿时间：2024-09-05修订日期：2024-10-25 |
| 基金项目: |
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| CFETR CS Model Coil Conductor Pressure Drop Test and Research |
|
leijia1, liuhuajun2, zhangshuchuan1, guoliang2
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| (1.Anhui University of Science and Technology;2.Hefei Institutes of Physical Seience, Chinese Academy of Sciences) |
| Abstract: |
| The Central Solenoid (CS) is one of the core components of the Chinese Fusion Engineering Test Reactor (CFETR), composed of inner Nb3Sn coils, outer Nb3Sn coils, and NbTi coils. It utilizes a 4.5K supercritical helium forced flow cooling system. The forced helium flow within the Cable-in-Conduit Conductor (CICC) is subject to frictional forces that lead to pressure drop and energy loss, which in turn can affect the normal operation of the coil. This article introduces a pressure drop-flow rate test experiment conducted at room temperature using nitrogen gas, and employs the Katheder empirical formula to calculate theoretical pressure drops. The calculated results are compared with the measured values, and the comparison indicates that the error is positively correlated with the flow rate. The relationship between the pressure drop and flow rate in different flow paths within the tube reflects that the flow resistance in each flow path is relatively uniform. |
| Key words: CS model coil CICC conductor Pressure drop test friction coefficient |