Design of the toroidal field coil preloading system on HL-2M tokamak

doi:10.16568/j.0254-6086.2021s1025

Abstract

Abstract: According to the detachable toroidal field (TF) coil structure of HL-2M tokamak, horizontal
preloading mechanism is adopted to preload the TF coil at the upper and lower ends of the "D" shaped coil. When
the TF coil carries large current and endures large electromagnetic force, the preload and prestress of TF coil
connecting bolts can ensure that the connection surface does not separate. Due to the requirements of
synchronization and consistency, the system adopts hydraulic synchronous lifting mechanism, and uses pressure
sensor to monitor the preload value in real time. The system ensures the safety of TF coil in the whole discharge
experiment stage and provides the overall safety of HL-2M tokamak.

Key words: Toroidal field coil, Hydraulic preloading, Pressure sensor, Support structure, HL-2M tokamak

摘要： 针对 HL-2M 装置可拆卸的环向场(TF)线圈结构，在“D”形 TF 线圈外侧上、下两端分别采用水平的预紧机构对 TF 线圈实施预紧，使 TF 线圈在大电流承受较大电磁力的情况下，与 TF 线圈连接螺栓的预应力一起保证连接面不发生分离。由于同步性和一致性的要求，该系统采用液压同步顶升机构，并且采用压力传感器实时检测该预应力值，保证 TF 线圈在整个放电实验阶段的安全，为 HL-2M 装置整体的安全提供保障。

关键词: 环向场线圈；液压预紧；压力传感器；HL-2M 主机支撑结构

CLC Number:

TL62+2

LIN Tao, LIU De-quan, CAI Li-jun, LI Qiang, QIAO Tao . Design of the toroidal field coil preloading system on HL-2M tokamak[J]. Nuclear Fusion and Plasma Physics, 2021, 41(s1): 415-419.

林涛, 刘德权, 蔡立君, 李强, 乔涛. HL-2M 环向场线圈预紧系统设计[J]. 核聚变与等离子体物理, 2021, 41(s1): 415-419.

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Design of the toroidal field coil preloading system on HL-2M tokamak

HL-2M 环向场线圈预紧系统设计

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