Connector between high-temperature superconductive magnet double-cake coils and its welding method

A double-cake coil, high-temperature superconducting technology, applied in superconducting magnets/coils, magnetic objects, electrical components, etc., can solve the problems of welding point damage, difficult temperature control, large difference in joint resistance, and reduce operating costs. , the effect of improving stability

Inactive Publication Date: 2007-11-21
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

The overlapping method is to weld the taps of the superconducting tapes of two adjacent double-cake coils together with solder along the winding direction; this method has a simple structure, but there is a certain axial gap between the two double-cake coils. Span, the two overlapping taps are easy to sprain; directly soldering with a soldering iron, the temperature cannot be controlled, and overheating will easily cause damage to the soldering point; the uniformity of the solder layer is difficult to control, and it is easy to weld; the above factors cause the joint resistance to be too large
The transition metal method is to solder the super

Method used

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  • Connector between high-temperature superconductive magnet double-cake coils and its welding method
  • Connector between high-temperature superconductive magnet double-cake coils and its welding method
  • Connector between high-temperature superconductive magnet double-cake coils and its welding method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] The present invention is mainly composed of a concave substrate 1, a NbTi bridge 7, a convex cover 8 and the like. As shown in Figure 1, the concave substrate 1 is fixed on the magnet, which is the joint body, the NbTi bridge 7 is embedded in the concave grooves C1 and C2 on the substrate 1, and the convex beam 9 of the convex cover 8 is snapped into the substrate 1 Press and fix the NbTi bridge 7 in the concave grooves C1 and C2 on the top. Concave substrate 1 is about 10-25cm long, is twice of the lap welding length of common superconducting tape, and is an arc-shaped body processed by low-resistivity metals such as red copper, and is the main part of the present invention. The width of the concave groove C1, C2 is slightly wider than the width of the high temperature superconducting tape 11 and 12 used by the double cake coil D1, D2,...

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Abstract

This is a tie-in of double pie loop for high temperature super conducting magnet and its jointing method. The tie-in composes a concave base, NbTi bridge and a convex cover. The concave base is the matrix of the tie-in and made by metal like copper of low resistivity, of a shape in arc and radial section in rectangle and is fixed to a magnet. The NbTi bridge is embedded in the groves[C1, C2] on the base, and the convex beam on the convex cover is also embedded in the groves to fix the NbTi bridge.

Description

technical field [0001] The invention relates to a joint between double cake coils in a high temperature superconducting magnet and a welding method thereof, in particular to a joint between double cake coils of a high temperature superconducting magnet working in a liquid helium temperature zone and a welding method thereof. Background technique [0002] High-temperature superconducting magnets have the advantages of high stability, high current density and high critical magnetic field that cannot be achieved by low-temperature superconductors in the liquid helium temperature region. They have broad prospects in applications such as nuclear magnetic resonance imaging, strong magnetic fields, and energy storage. [0003] Conductors that can be used to wind high-temperature superconducting magnets include bismuth-based silver-coated strips (Bi-2223 / Ag) that have been commercially produced and YBCO-coated high-temperature superconducting strips that are currently being developed...

Claims

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Application Information

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IPC IPC(8): H01F6/06
Inventor 张京业王子凯张东张丰元戴少涛肖立业林良真
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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