CN201435232Y

CN201435232Y - Paper-free insulated self-adhered polyvinyl acetal enameled copper-silver alloy transposed semihard lead

Info

Publication number: CN201435232Y
Application number: CN 200920046273
Authority: CN
Inventors: 徐进法; 曹永义
Original assignee: Wuxi Xizhou Magnet Wires Co Ltd
Current assignee: Wuxi Xizhou Magnet Wires Co Ltd
Priority date: 2009-06-03
Filing date: 2009-06-03
Publication date: 2010-03-31
Anticipated expiration: 2019-06-03

Abstract

The utility model relates to a paper-free insulated self-adhered polyvinyl acetal enameled copper-silver alloy transposed semihard lead, which has small overall dimension, excellent electrical property, mechanical property and adhesive property, and comprises a transposed wire core. The outside of the transposed wire core is lapped with an insulated layer, and the transposed wire core comprises aplurality of enameled rectangular-section conductors which are transposed to form two lines and comprise copper-silver alloy conductors; and polyvinyl acetal paint is coated outside the copper-silveralloy conductors and self-adhered paint is coated outside the polyvinyl acetal paint. The paper-free insulated self-adhered polyvinyl acetal enameled copper-silver alloy transposed semihard lead is characterized in that the insulated layer is a polyester mesh belt.

Description

The paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead

(1) technical field

The utility model relates to power transformer transposed conductor technical field, is specially the paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead.

(2) background technology

The Kufil transposed conductor that present power transformer is used mainly is a paper insulation self-adhesion acetal paint copper-clad silver transposed semi-hard conductor, see Fig. 1, it is made of the outside lapped insulation paper 5 of transposition core, the core that wherein replaces is shaped by treated two row that replace into of several enamel-cover Kufil lenticular wires, and the Kufil lenticular wire is made by the Kufil conductor 2 outside acetal paint films 3 that apply; Its shortcoming be when the exterior insulation paper 5 wrapped numbers of plies many, wrapped closely the time, can produce local oil sac phenomenon, had a strong impact on the radiating effect of coil, also can cause coil press mounting not tight simultaneously, cause the Short Circuit withstand impact capacity to descend; And its exterior insulation paper is wrapped, and outermost layer 51 and innermost layer 53 are overlapping wrapped, and all the other 52 gaps, intermediate layer are wrapped, its complex structure, and the Transformer Winding space availability ratio is low.

(3) summary of the invention

At the problems referred to above, the utility model provides the paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead, and its overall dimension is little, has good electric property, mechanical performance, adhesive property.

Its technical scheme is such: it comprises the transposition core, described transposition core is outside wrapped by insulating barrier, described transposition core comprises several enameled sheet wires, described several enameled sheet wire replaces into two row, described enameled sheet wire comprises the Kufil conductor, described Kufil conductor is externally coated with acetal paint, and described acetal paint is externally coated with the self-adhesion lacquer, and it is characterized in that: described insulating barrier is the polyester guipure.

It is further characterized in that: described insulating barrier is wrapped to be that the single-layer polyester guipure is overlapping wrapped; Described polyester guipure is worked out by polyester rope and nylon fiber; The quantity of described enameled sheet wire is decided according to actual conditions.

Paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead of the present utility model, its metallic conductor adopts Kufil, and it has favorable conductive heat conduction, can improve the radiating effect of coil, reaches the purpose that improves the coil working temperature; It adopts the polyester guipure as insulating barrier, and it has good thermal contraction performance and mechanical strength, adopts this polyester guipure lapped insulation thickness little, and coiling is tight, has guaranteed the Short Circuit withstand impact property of coil.

(4) description of drawings

Fig. 1 is paper-insulating copper-silver alloy transposition semi-hard conducting wire wrapped by self-sticking ethylidene ether lacquer structural representation in the past;

Fig. 2 is the wrapped structural representation of paper-insulating copper-silver alloy transposition semi-hard conducting wire wrapped by self-sticking ethylidene ether lacquer insulating paper in the past;

Fig. 3 is the utility model paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard conductor structure schematic diagram;

Fig. 4 is the wrapped structural representation of the utility model paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard wire insulation.

(5) embodiment

See Fig. 3, Fig. 4, the utility model comprises the transposition core, the transposition core is outside wrapped by insulating barrier 1, the transposition core comprises several enameled sheet wires, several enameled sheet wires replace into two row, enameled sheet wire comprises Kufil conductor 2, and it is the self-adhesion enamelled coating that Kufil conductor 2 is externally coated with

acetal paint film

3,4; Wherein insulating barrier 1 is the polyester guipure; The quantity of enameled sheet wire is decided according to the wrapped situation of reality in the transposition core; Insulating barrier 1 is wrapped to be that the single-layer polyester guipure is overlapping wrapped.

In the paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead of the utility model structure, conductor is made by Kufil, adopt up-drawing method continuous casting, continuously extruded, drawing process production, improved the plasticity of metal, eliminated casting flaw, crystallization has again taken place, change the metal structure structure, the inner crystal grain of refinement, thereby the electric property and the mechanical performance of raising metal, silver content is controlled at 0.8～2 ‰; 20 ℃ of resistivity of Kufil conductor≤0.016903～0.017540 Ω mm ²/ m, yield strength R _P0.2〉=300N/mm ², and do not have significant change 80 ℃～150 ℃ long-play yield strengths; The utility model adopts the polyester guipure as insulating material, this polyester guipure adopts polyester rope and nylon fiber through working out, have good thermal contraction performance and mechanical strength, adopt this polyester guipure lapped insulation thickness little, coiling is tight, and overall dimension is little, the overall dimension basically identical, can effectively raise the winding space utilance with its coiling transformer coil, reduce volume of transformer; Coil with the paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead coiling of the utility model structure does not need through special heat treatment, only need carry out according to normal coil treatment process, do not need to increase any other production auxiliary equipment, saved the transformer manufacturing cost; The polyester guipure has the function of meeting thermal contraction in the running, fully transposed conductor is tied up firmly, has improved the impact resistance of coil, and coil is indeformable when guaranteeing sudden short circuit.

Claims

1, paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead, it comprises the transposition core, described transposition core is outside wrapped by insulating barrier, described transposition core comprises several enameled sheet wires, described several enameled sheet wire replaces into two row, and described enameled sheet wire comprises the Kufil conductor, and described Kufil conductor is externally coated with acetal paint, described acetal paint is externally coated with the self-adhesion lacquer, and it is characterized in that: described insulating barrier is the polyester guipure.

2, paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead according to claim 1 is characterized in that: described insulating barrier is wrapped to be that the single-layer polyester guipure is overlapping wrapped.

3, paperless insulation self-adhesive acetal enamelled copper-silver alloy transposed semihard lead according to claim 2 is characterized in that: described polyester guipure is worked out by polyester rope and nylon fiber.