CN109148074B - 一种圆柱形子电缆搭接超导接头 - Google Patents

一种圆柱形子电缆搭接超导接头 Download PDF

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CN109148074B
CN109148074B CN201810843776.8A CN201810843776A CN109148074B CN 109148074 B CN109148074 B CN 109148074B CN 201810843776 A CN201810843776 A CN 201810843776A CN 109148074 B CN109148074 B CN 109148074B
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荣建
杨皓君
陆坤
黄雄一
温新杰
宋云涛
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Hefei Institutes of Physical Science of CAS
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    • H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
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    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
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Abstract

本发明公开了一种圆柱形子电缆搭接超导接头，包括接头不锈钢铠甲、不锈钢压力板、左母线子电缆、右母线子电缆、铜搭接板、不锈钢支撑和铟层，所述接头中搭接的子电缆由不锈钢支撑提供支撑，所述左母线子电缆依次嵌入不锈钢支撑的凹槽中，然后所述镀有铟层的铜搭接板嵌入凹槽中，再之后所述右母线子电缆不锈钢支撑的凹槽中，将不锈钢压力板和不锈钢支撑焊接，所述接头最外侧为不锈钢铠甲，本发明电阻小，交流损耗较低，且所需材料较少，冷却性能好。

Description

一种圆柱形子电缆搭接超导接头
技术领域
本发明涉及超导磁体设备技术领域，尤其涉及一种圆柱形子电缆搭接超导接头。
背景技术
托卡马克的馈线系统用于供应超临界氦和超导磁体的电流，装置中超导体每个馈线中的母线用于导电，并且每个母线被分成不同的部分通过超导接头连接。但是现有的超导接头为双盒搭接接头，其电阻大，交流损耗过高，且需要外部冷却剂通道，冷却性能没有达到很好的效果；且方形的接头使安装的绝缘体不易达到张力均匀，使装置在实验工作的过程中达不到一个很好的实验工作效果。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种圆柱形子电缆搭接超导接头。
本发明是通过以下技术方案实现的：
一种圆柱形子电缆搭接超导接头，包括有圆筒形的不锈钢铠甲，在不锈钢铠甲的左右端分别连接有母线铠甲，在不锈钢铠甲的内部两端分别设有不锈钢支撑，所述的不锈钢支撑的中心开有通孔，四周呈圆周排列等距开设有多个凹槽，将左侧母线和右侧母线分别从两端的母线铠甲伸入到不锈钢铠甲中内部，将左侧母线和右侧母线的前端分别退扭绞得到多根左母线子电缆、右母线子电缆和两根中心铜芯，不锈钢支撑上的凹槽的数量分别与左母线子电缆、右母线子电缆的数量相同，将两根中心铜芯分别从两个不锈钢支撑的中心的通孔内穿进不锈钢铠甲内并通过压力压接，将多根左母线子电缆分别依次嵌入到左侧的不锈钢支撑的凹槽和右侧的不锈钢支撑的凹槽内，将多根右母线子电缆分别依次嵌入到右侧的不锈钢支撑的凹槽和左侧的不锈钢支撑的凹槽内，在每个凹槽内均嵌入有两侧渡有铟层的铜搭接板，将位于同一凹槽内的左母线子电缆和右母线子电缆分别通过压力压接在铜搭接板的两侧，在每个不锈钢支撑的凹槽内均嵌入有不锈钢压力板。
所述的左母线子电缆、铜搭接板、右母线子电缆以及两根中心铜芯均是通过100吨的压力在室温下压接连接的。
所述的两个不锈钢支撑分别位于不锈钢铠甲的两端与母线铠甲的连接位置处，两个不锈钢支撑分别与两个母线铠甲焊接连接。
所述的不锈钢压力板为搭接的子电缆提供连接所需压力。
所述左母线子电缆与右母线子电缆在不锈钢铠甲内部的搭接长度为300mm，所述左母线子电缆与右母线子电缆的搭接长度比扭绞节距长250mm。
本发明的优点是：1、本发明比现有的双盒搭接接头具有更小的电阻和更低的交流损耗。
2、本发明的长度为300mm，双盒搭接接头长度为450mm,更加节约空间，节省材料。
3、本发明为圆柱形，在绝缘层包裹时，使得张力绝缘子比双盒搭接接头中的绝缘子更均匀。
4、在本发明中，超级流体氦冷却剂流过子电缆和铜芯芯孔的束空隙而没有外部冷却管，这使得子电缆搭接接头的冷却性能优于双盒搭接接头。
附图说明
图1为本发明的结构示意图。
图2为本发明的不锈钢支撑内剖视图。
图3为本发明不锈钢支撑结构示意图。
图4为左母线子电缆、铜搭接板、左母线子电缆之间的位置结构图。
具体实施方式
如图1、2、3、4所示，一种圆柱形子电缆搭接超导接头，包括有圆筒形的不锈钢铠甲1，在不锈钢铠甲1的左右端分别连接有母线铠甲2，在不锈钢铠甲1的内部两端分别设有不锈钢支撑3，所述的不锈钢支撑3的中心开有通孔4，四周呈圆周排列等距开设有多个凹槽5，将左侧母线6和右侧母线7分别从两端的母线铠甲2伸入到不锈钢铠甲1中内部，将左侧母线6和右侧母线7的前端分别退扭绞得到多根左母线子电缆8、右母线子电缆9和两根中心铜芯10，不锈钢支撑3上的凹槽的数量分别与左母线子电缆8、右母线子电缆9的数量相同，将两根中心铜芯10分别从两个不锈钢支撑3的中心的通孔4内穿进不锈钢铠甲1内并通过压力压接，将多根左母线子电缆8分别依次嵌入到左侧的不锈钢支撑3的凹槽和右侧的不锈钢支撑3的凹槽内，将多根右母线子电缆9分别依次嵌入到右侧的不锈钢支撑的凹槽和左侧的不锈钢支撑的凹槽内，在每个凹槽5内均嵌入有两侧渡有铟层11的铜搭接板12，将位于同一凹槽5内的左母线子电缆8和右母线子电缆9分别通过压力压接在铜搭接板12的两侧。
所述的左母线子电缆8、铜搭接板12、右母线子电缆9以及两根中心铜芯10均是通过100吨的压力在室温下压接连接的。
在每个不锈钢支撑3的凹槽内均嵌入有不锈钢压力板13。
所述的两个不锈钢支撑3分别位于不锈钢铠甲1的两端与母线铠甲2的连接位置处，两个不锈钢支撑3分别与两个母线铠甲2焊接连接。
超导接头总长度为400mm，在反向电镀过程中去除左母线子电缆8与右母线子电缆9外层股线上的镍，在铜搭接板12的两侧镀上约0.2毫米的铟层11，镀上铟层11之后，铟层11表面的氧化物和附加通道被去除，以减少左母线子电缆8右母线子电缆9和铜搭接板12之间的接触电阻；在该发明中，超级流体氦冷却剂通过搭接的子电缆和铜芯的束空隙流通而没有使用外部冷却管，这使得该发明的冷却性能优于现有的双盒搭接接头。已知当测试双盒搭接接头时，该发明使得绝缘子的张力更均匀，因此圆柱形子电缆搭接接头具有比双盒搭接接头更均匀的张力绝缘子。

Claims (1)

1.一种圆柱形子电缆搭接超导接头，其特征在于：包括有圆筒形的不锈钢铠甲，在不锈钢铠甲的左右端分别连接有母线铠甲，在不锈钢铠甲的内部两端分别设有不锈钢支撑，所述的不锈钢支撑的中心开有通孔，四周呈圆周排列等距开设有多个凹槽，将左侧母线和右侧母线分别从两端的母线铠甲伸入到不锈钢铠甲中内部，将左侧母线和右侧母线的前端分别退扭绞得到多根左母线子电缆、右母线子电缆和两根中心铜芯，不锈钢支撑上的凹槽的数量分别与左母线子电缆、右母线子电缆的数量相同，将两根中心铜芯分别从两个不锈钢支撑的中心的通孔内穿进不锈钢铠甲内并通过压力压接，将多根左母线子电缆分别依次嵌入到左侧的不锈钢支撑的凹槽和右侧的不锈钢支撑的凹槽内，将多根右母线子电缆分别依次嵌入到右侧的不锈钢支撑的凹槽和左侧的不锈钢支撑的凹槽内，在每个凹槽内均嵌入有两侧渡有铟层的铜搭接板，将位于同一凹槽内的左母线子电缆和右母线子电缆分别通过压力压接在铜搭接板的两侧，在每个不锈钢支撑的凹槽内均嵌入有不锈钢压力板；
所述的两个不锈钢支撑分别位于不锈钢铠甲的两端与母线铠甲的连接位置处，两个不锈钢支撑分别与两个母线铠甲焊接连接。
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CN110401046B (zh) * 2019-07-16 2020-10-16 中国科学院合肥物质科学研究院 降低cicc超导导体接头盒内超导缆交流损耗的方法
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