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Heat-resistant self-sticking transposed conductor for transformers and manufacturing method thereof

A transposition wire, transformer technology, applied in the direction of transformer/inductor coil/winding/connection, cable/conductor manufacturing, conductor, etc., can solve the problem of affecting the safety and service life of transformer operation, the bond strength of self-adhesive transposition wire weakening, transformer winding distortion and other problems, to improve short-circuit resistance, improve mechanical strength, and prolong service life

Active Publication Date: 2014-12-24
WUXI TOLY ELECTRIC WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a specific environment, the working temperature of the power transformer winding may be above 100°C for a long time, or even locally reach 120°C. Under the action of impact, the transformer winding may have mechanical damage such as distortion and deformation, which will affect the safety and service life of the transformer.

Method used

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  • Heat-resistant self-sticking transposed conductor for transformers and manufacturing method thereof
  • Heat-resistant self-sticking transposed conductor for transformers and manufacturing method thereof
  • Heat-resistant self-sticking transposed conductor for transformers and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of heat-resistant self-adhesive transposition wire for transformer of the present invention comprises the following steps:

[0028] a. Take the cross-section of the already produced rectangular conductor with rounded corners, the size is 1.40mm×6.07mm, use a concave fixed paint mold to coat the surface of the conductor with primer, and then enter the vertical enamelled oven for baking Curing, the inlet temperature of the vertical enamelling oven is controlled at 130°C-135°C, the temperature of the lower layer is controlled at 235°C-240°C, the temperature of the middle layer is controlled at 350°C-370°C, and the temperature of the upper layer is controlled at 390°C-400°C. The speed is controlled at 10m / min, the primer is solidified to form a primer film with a thickness of 0.09mm, and the indentation of the primer film is 0.010mm, and a heat-resistant self-adhesive enamelled flat wire semi-finished product is obtained;

[0029] b. Use the Hal...

Embodiment 2

[0038] A kind of preparation method of heat-resistant self-adhesive transposition wire for transformer of the present invention comprises the following steps:

[0039] a. Take the cross-section of the already produced rectangular conductor with rounded corners, the size is 1.22mm×5.04mm, use a concave fixed paint mold to coat the surface of the conductor with primer, and then enter the vertical enamelled oven for baking Curing, the inlet temperature of the vertical enamelling oven is controlled at 120°C-125°C, the temperature of the lower layer is controlled at 220°C-230°C, the temperature of the middle layer is controlled at 300°C-310°C, and the temperature of the upper layer is controlled at 380°C-390°C. The speed is controlled at 10.5m / min, the primer is cured to form a primer film with a thickness of 0.08mm, and the indentation of the primer film is 0.010mm, and a heat-resistant self-adhesive enamelled flat wire semi-finished product is obtained;

[0040] b. Use the Half p...

Embodiment 3

[0049] A kind of preparation method of heat-resistant self-adhesive transposition wire for transformer of the present invention comprises the following steps:

[0050] a. Take the cross-section of the already produced rectangular conductor with rounded corners, the size is 2.67mm×12.02mm, use a concave fixed paint mold to coat the surface of the conductor with primer, and then enter the vertical enamelled oven for baking Curing, the inlet temperature of the vertical enamelling oven is controlled at 215°C-220°C, the temperature of the lower layer is controlled at 305°C-310°C, the temperature of the middle layer is controlled at 410°C-420°C, and the temperature of the upper layer is controlled at 440°C-450°C. The speed is controlled at 13m / min, the primer is cured to form a primer film with a thickness of 0.012mm, and the indentation of the primer film is 0.015mm, and a heat-resistant self-adhesive enamelled flat wire semi-finished product is obtained;

[0051] b. Use the Half p...

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Abstract

The invention discloses a heat-resistant self-sticking transposed wire for transformers and a manufacturing method thereof. Two rows of heat-resistant self-sticking enameled flat wires, having mutually contacted wide faces, are arranged within an outer insulating layer. Middle lining paper is arranged between the two rows of heat-resistant self-sticking enameled flat wires in such a manner that the middle lining paper is transposed in a same direction above and below the two rows of heat-resistant self-sticking enameled flat wires along their narrow faces. Each heat-resistant self-sticking enameled flat wire comprises a rectangular conductor, the cross section of the rectangular conductor is rounded, the outside of the rectangular conductor is coated with a primer film, and the outside of the primer film is coated with a finish film. From view of the cross section of the heat-resistant self-sticking enameled flat wires, the wide side of each primer film is concavely arced, and the outline of each finish film is a rectangle rounded. The heat-resistant self-sticking transposed wire has the advantages that mechanical strength of the transformer windings under high temperature can be effectively improved, short circuit resistance of the transformer windings is improved, and the service lives of the transformer windings are prolonged.

Description

technical field [0001] The invention discloses a heat-resistant self-adhesive transposition wire for a transformer. The invention also discloses a preparation method for a heat-resistant self-adhesive transposition wire for a transformer, specifically for heat-resistant self-adhesive transposition of a transformer wire. Background technique [0002] At present, with the continuous increase of transformer capacity and the continuous improvement of system stability requirements, higher requirements are put forward for the short-circuit resistance capability of transformer equipment. The use of self-adhesive transposed wires can effectively meet this performance requirement of transformers. The so-called self-adhesive transposition wire is to coat a suitable bonding layer on the surface of a single enamelled flat wire. After the coil is dried under constant pressure, the respective enameled flat wires can be firmly bonded together to form a Rigid body as a whole, thereby great...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/18H01B7/40H01B13/00H01F27/28
Inventor 陆炳兴陈浩菊张欢
Owner WUXI TOLY ELECTRIC WORKS
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