CN103474217A

CN103474217A - Novel silicon rubber insulation dry-type power transformer

Info

Publication number: CN103474217A
Application number: CN2013104688270A
Authority: CN
Inventors: 薛建仁; 薛韬
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-09
Filing date: 2013-10-09
Publication date: 2013-12-25

Abstract

The invention provides a novel silicon rubber insulation dry-type power transformer which is composed of an iron core and a plurality of coils. Liquid-state silicone rubber vacuum pouring or vacuum impregnation is carried out on the coils, silicone rubber permeated between turns and between layers solidifies the coils into the whole structure, and the novel silicon rubber insulation dry-type power transformer is strong in overload and heat shock resistance capability, good in insulation performance, low in magnitude of partial discharge, good in heat dissipation performance, capable of preventing dust, moisture and vibration, and capable of being applied in the industry and on special occasions, such as the industry, ships, warships, subways and high-speed rails, with the higher requirement.

Description

The dry-type power transformer of new type silicone rubber insulation

Technical field:

The present invention relates to a kind of dry-type power transformer, belong to field of electrical equipment, particularly adopt the dry-type power transformer of silicone insulation.

Background technology:

Common dry-type power transformer has poured with epoxy resin and the non-dry-type transformer of sealing two kinds of insulation modes of insulating varnish dipping, a little less than the dry-type transformer capability of overload of poured with epoxy resin, heat-transfer capability is poor, the shortcomings such as partial discharge quantity increase that the aging meeting of epoxy resin causes; The non-shortcomings such as dry-type transformer preventing dust tidal range of sealing the insulating varnish dipping.

Summary of the invention:

The object of the invention is to: propose a kind of dry-type power transformer of new type silicone rubber insulation, this dry-type transformer can overcome the shortcoming that above-mentioned two class dry-type transformers exist well.

Realization of the present invention is: this transformer consists of unshakable in one's determination and a plurality of coils, and coil is enclosed within on the stem of installation coil unshakable in one's determination; Coil adopts fluid silicone rubber vacuum pouring or vacuum impregnation, and the silicon rubber of turn-to-turn and interlayer infiltration is cured as overall structure by coil, the silastic-layer that the coil surfaces externally and internally has cast or dipping to form.

In the present invention: the coil of vacuum impregnation moulding is many impregnate layer composite insulation structure, and its bottom is the insulating varnish impregnate layer, and top layer is the silicon rubber impregnate layer, and the silicon rubber on top layer is attached to insulating varnish impregnate layer surface.

In the present invention: the surface attachment unshakable in one's determination of transformer has the silicon rubber impregnate layer.

In the present invention: the coil of transformer be paper tinsel around or winding structure.

In the present invention: the iron core of transformer is plane laminated core structure.

In the present invention: the iron core of transformer is the three dimensional wound core structure.

In the present invention: the core material of transformer adopts non-crystalline material or silicon steel material.

The invention has the advantages that: have good insulation preformance, partial discharge quantity is low, and thermal diffusivity is good, dust and moisture, and noise is low, and the mechanical strength advantages of higher can be applied in the place of the specific (special) requirements such as industry and naval vessel, subway high ferro and nuclear power.

The accompanying drawing explanation

Fig. 1 is plane of the present invention laminated core structure embodiment schematic diagram;

Fig. 2 is three dimensional wound core structure embodiment schematic diagram of the present invention;

Fig. 1 is plane laminated core structure dry-type transformer horizontal sectional drawing, and coil is many impregnate layer structure; Fig. 2 is three dimensional wound core structure dry-type transformer horizontal sectional drawing, and coil is many impregnate layer structure.

Embodiment

Accompanying drawing, only with regard to many impregnate layer structure, discloses basic structure of the present invention without limitation, does not represent the whole of summary of the invention and claim, and below in conjunction with legend, the present invention will be further described.

In Fig. 1 and Fig. 2: 1 section that is plane laminated core or three dimensional wound core, 2 is surperficial silastic-layer unshakable in one's determination, the 3rd, low-voltage coil, the 4th, the low-voltage coil silastic-layer, the 5th, the silastic-layer of high-tension coil inwall, the 6th, high-tension coil, the 7th, the insulating varnish impregnate layer of high-tension coil, the 8th, the outer silastic-layer of high-tension coil, the 9th, the air flue between the transformer high-low-voltage coil; Many impregnate layer technique is under vacuum condition, and impregnated insulating paint, after the insulating varnish impregnate layer is solidified, floods silicon rubber again.

Claims

1. the dry-type power transformer of a silicon rubber insulation, this transformer consists of unshakable in one's determination and a plurality of coils, coil is enclosed within on the stem of installation coil unshakable in one's determination, its technical characteristics is: coil adopts fluid silicone rubber vacuum pouring or vacuum impregnation, the silicon rubber of turn-to-turn and interlayer infiltration is cured as overall structure by coil, the silastic-layer that the coil surfaces externally and internally has cast or dipping to form.

2. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the coil of vacuum impregnation moulding is many impregnate layer composite insulation structure, its bottom is the insulating varnish impregnate layer, top layer is the fluid silicone rubber impregnate layer, and the silicon rubber on top layer is attached to insulating varnish impregnate layer surface.

3. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the surface attachment unshakable in one's determination of transformer has the silicon rubber impregnate layer.

4. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the coil of transformer be paper tinsel around or winding structure.

5. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the iron core of transformer is plane laminated core structure.

6. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the iron core of transformer is the three dimensional wound core structure.

7. the dry-type power transformer of a silicon rubber insulation as claimed in claim 1: the core material of transformer adopts non-crystalline material or silicon steel material.