Hydraulic Characteristics of ITER TF Insert Coil

K. Hamada, K. Kawano, K. Matsui, T. Kato, M. Sugimoto, E. Hara, K. Okuno, S. Egorov, I. Rodin, V. Sytnikov, Y. Takahashi
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引用次数: 2

Abstract

The Central Solenoid (CS) model coil program was established in 1992 as one of projects for the Engineering Design Activities of the International Thermonuclear Experimental Reactor (ITER) and has been an ongoing activity ever since. A CS model coil and a Toroidal Field (TF) Insert have been developed and tested successfully. The TF insert is comprised of a cable-in-conduit conductor that consists of 1, 152 superconducting strands bundled on a central cooling channel. An experiment was conducted to investigate the pressure drop performance of the TF insert. There were two purposes for the investigation: one to verify pressure drop prediction using correlations proposed by various researchers, and other to investigate the behavior of the pressure drop under electromagnetic forces. The pressure drop of the TF insert decreased by approximately 12% during current-carrying operation of 46kA at 13T. After several current-carrying operations, the friction factor of the TF insert finally reached a value that was approximately 10% lower than that of original state and was not recovered even without current. It is believed that the cable cross-section inside the conductor jacket became deformed due to electromagnetic force and a new flow path in the jacket was generated.
ITER TF插入线圈的水力特性
中央螺线管(CS)模型线圈项目成立于1992年,是国际热核实验反应堆(ITER)工程设计活动的项目之一,并一直在进行中。研制成功了CS模型线圈和环形场(TF)插片。TF插入件由电缆导管导体组成,该导体由1152根超导股束组成,束在中央冷却通道上。通过实验研究了TF插片的压降性能。这项研究有两个目的:一个是利用不同研究人员提出的相关性来验证压降预测,另一个是研究电磁力作用下压降的行为。在13T的46kA载流工作期间,TF插入片的压降下降了约12%。经过多次载流操作后,TF插入片的摩擦因数最终达到比原始状态低约10%的值,即使没有电流也无法恢复。认为导体护套内的电缆截面在电磁力作用下发生变形,在护套内产生了新的流道。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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