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Turn-to-turn insulating layer of plate-type structure coil and preparation method of turn-to-turn insulating layer

A technology of inter-turn insulation and insulating layer, which is used in coil manufacturing, transformer/inductor coil/winding/connection, electromagnet, etc., to improve the uniform thickness of inter-turn insulation, stable and reliable electrical performance, and high bonding strength.

Pending Publication Date: 2022-04-01
SOUTHWESTERN INST OF PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional wrapping insulation technology cannot provide high enough insulation strength and structural strength in such a limited volume, and new technical solutions must be adopted

Method used

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  • Turn-to-turn insulating layer of plate-type structure coil and preparation method of turn-to-turn insulating layer
  • Turn-to-turn insulating layer of plate-type structure coil and preparation method of turn-to-turn insulating layer

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Utilize the inter-turn insulation layer of a plate structure coil provided by the present invention to prepare a 7-turn copper plate structure coil. The height of the entire part of the copper plate is more than 5 meters, the length of the upper and lower horizontal sections of the part is close to 2 meters, and the width of the straight section is 0.38 meters. . The thickness of the parts from left to right is progressively thicker, the leftmost end is about 11mm, and the rightmost end has a thickness of 50mm. The preparation method specifically includes the following steps:

[0045] Step A: Grinding the surface of the large-sized copper plate to a surface roughness of not less than 3.2;

[0046] Step B: Clean the surface of the copper plate with alcohol to ensure no scratches, no fingerprints and other stains;

[0047] Step C: Hang the cleaned one-turn copper plate into the die tooling;

[0048] Step D: Pave the inter-turn insulating layer on the copper plate. The ...

Embodiment 2

[0056] Utilize the turn-to-turn insulating layer of a plate structure coil provided by the present invention to prepare a 5-turn copper plate structure coil. The height of the entire part of the copper plate is more than 5 meters, the length of the upper and lower horizontal sections of the part is close to 2 meters, and the width of the straight section is 0.38 meters. . The thickness of the parts from left to right is progressively thicker, the leftmost end is about 11mm, and the rightmost end has a thickness of 50mm. The preparation method specifically includes the following steps:

[0057] Step A: Grinding the surface of the large-sized copper plate to a surface roughness of not less than 3.2;

[0058] Step B: Clean the surface of the copper plate with acetone to ensure no scratches, no fingerprints and other stains;

[0059] Step C: Hang the cleaned one-turn copper plate into the die tooling;

[0060] Step D: Pave the inter-turn insulating layer on the copper plate. Th...

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Abstract

The invention belongs to the field of electrical insulation, and particularly discloses a turn-to-turn insulating layer of a plate-type structure coil and a preparation method thereof.The turn-to-turn insulating layer comprises first-class insulating layers and second-class insulating layers, the first-class insulating layers are located between two turns of copper plates, and the adjacent surfaces of the two turns of copper plates are each connected with one first-class insulating layer in a combined mode; the second-class insulating layer is located between the two first-class insulating layers, and the second-class insulating layer is connected with the first-class insulating layers in a combined mode. The plate-type structure coil obtained through the preparation method can be used for the conditions that the peripheral space is extremely compact, and the requirements for the electrical performance and the mechanical performance of the insulating layer are high.

Description

technical field [0001] The invention belongs to the field of electrical insulation, and in particular relates to an inter-turn insulating layer of a plate structure coil and a preparation method thereof. Background technique [0002] A tokamak device is a fusion device that uses a magnetic field to confine plasma to achieve controlled nuclear fusion reactions. At its center is a circular vacuum chamber with coils wound around it. The coil is energized to generate a huge magnetic field, which is used to confine the plasma, and various auxiliary heating methods are used to make the plasma reach a high temperature and high pressure state, so as to achieve the purpose of nuclear fusion reaction. Coils are divided into conventional magnet coils and superconducting magnet coils. Conventional magnet coils are mainly made of copper and copper alloy materials as conductors. The turn-to-turn insulation thickness of the large-size plate-type toroidal field coil is small, and the wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/32H01F41/04H01F41/12H01F7/06G21B1/05
CPCY02E30/10
Inventor 邱银邹晖刘晓龙李广生单亚农李明
Owner SOUTHWESTERN INST OF PHYSICS