Heat-resistant self-adhesive transposition wire for transformer and preparation 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: 2016-08-31
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-adhesive transposition wire for transformer and preparation method thereof
  • Heat-resistant self-adhesive transposition wire for transformer and preparation method thereof
  • Heat-resistant self-adhesive transposition wire for transformer and preparation 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-adhesive transposition wire for a transformer and a preparation method thereof. Two rows of heat-resistant self-adhesive enamelled flat wires whose wide surfaces are in contact with each other are arranged in an outer insulating layer. The top and bottom of the flat-coated wire are transposed in the same direction along the narrow surface, and an intermediate liner is provided between two rows of heat-resistant self-adhesive enamelled flat wire; the heat-resistant self-adhesive enameled flat wire includes a cross-section of A rectangular conductor with rounded corners, coated with a primer film on the outside of the conductor, and a topcoat film on the outside of the primer film; on the cross-section of the enamelled flat wire, the broad side of the primer film is arc-shaped The shape is concave, and the outer contour of the topcoat film is a rectangle with rounded corners. The heat-resistant self-adhesive transposition wire provided by the invention can effectively improve the mechanical strength of the transformer winding at high temperature, improve its short-circuit resistance capability, and prolong its service life.

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 Patents(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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