Research of turn to turn insulation for HL-2M toroidal field coils

doi:10.16568/j.0254-6086.201802007

Abstract

Abstract:

HL-2M tokamak adopts the demountable toroidal field coils (TFCs) structure in order to assemble the vacuum vessel chamber and poloidal field coils (PFCs) integrally. TFCs are subjected to high shear force, which require high electrical performance and adhesive strength between the inter turn insulation and the copper plate. Baking and curing impregnated glass cloth and epoxy glass cloth under different pressure, then adhesive properties have been researched by shear tests. The results show that there are some differences in the adhesive properties between the turn to turn insulation and the copper plate under different structural combinations and different pressures. Appropriate structural combination and pressure of hot baking and curing were selected for TFCs.

Key words: HL-2M tokamak, Toroidal field coils, Coil insulation, Adhesive strength

摘要：

为研究HL-2M装置环向场线圈的匝间的绝缘，利用拉伸剪切试验研究了浸胶玻璃毡布和环氧玻璃坯布在不同的压力作用下热烘焙固化后与铜板的粘接性能。结果表明，在不同结构组合和不同压力下，热烘焙固化后的匝间绝缘与铜板的粘接性能存在一定差异。HL-2M装置环向场线圈的匝间绝缘选取了浸胶玻璃毡布和环氧玻璃坯布间隔组合的结构，在8MPa压力下进行热烘焙固化，绝缘层与铜板的静态粘接强度达到24MPa，动态疲劳粘接强度与剪切试验循环次数有关。

关键词: HL-2M tokamak, Toroidal field coils, Coil insulation, Adhesive strength

CLC Number:

TL62+2

QIU Yin, LI Guang-sheng, ZHOU Hui, SHAN Ya-nong, YANG Qing-wei. Research of turn to turn insulation for HL-2M toroidal field coils[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(2): 163-169.

邱银，李广生，邹晖，单亚农，杨青巍. HL-2M 装置环向场线圈匝间绝缘工艺研究[J]. 核聚变与等离子体物理, 2018, 2(2): 163-169.

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Research of turn to turn insulation for HL-2M toroidal field coils

HL-2M 装置环向场线圈匝间绝缘工艺研究

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