CN2888614Y

CN2888614Y - Epoxy-resin filled dry transformer coil

Info

Publication number: CN2888614Y
Application number: CNU2006200720287U
Authority: CN
Inventors: 蒋忠金; 王恬平; 许叶平
Original assignee: JIANGSU HUAPENG TRANSFORMER CO Ltd
Current assignee: JIANGSU HUAPENG TRANSFORMER CO Ltd
Priority date: 2006-03-31
Filing date: 2006-03-31
Publication date: 2007-04-11
Anticipated expiration: 2016-03-31

Abstract

The utility model relates an epoxy pouring dry type transformer coil, which is made by winding coils on mould. An innermost layer conductor of every adjacent two pairs of the coil is wound from middle connecting part of two coils to both sides, a second layer conductor is wound from end point on both sides to the middle, a third layer conductor is wound from two middle end points to both sides, a fourth layer of conductor is wound from end point on both sides to the middle. Each layer of conductor is wound repeatedly with the same procedures as per specified number of layers and number of turns. The outer end lines of the coil comprises an incoming line end and a tap terminal, a tap for voltage regulating is arranged on tap terminal. The utility model has the advantages of excellent electrical performance, simple winding process, few winding man-hours, high axial fill rate of coil and little consumption of transformer materials.

Description

The epoxy cast dry transformer coil

Affiliated technical field

The utility model relates to a kind of epoxy cast dry transformer coil, belongs to the power transmission and transforming equipment technical field.

Background technology

The epoxy cast dry transformer coil is that coiling 2 constitutes on mould 1 as shown in Figure 1 at present.1., coil 2 segmentations are many there is following point in its coil winding method:, this reduces coil 2 axial utilances, needs coiling many man-hour.2., connect with lateral conductor 3 between every section coil 2, this coupling method can cause packed layer unreal, coil 2 cast backs are local produce pure resin may be poor, and the hidden danger of cracking is arranged.3., each tap terminals 5 and the tap 6 that is used for the pressure regulation tap draw from coil 2 internal layers, the tap 6 of drawing concentrates between interlude, if the big quantity of wire gauge for a long time, intractable on the technology very easily causes the turn-to-turn between the branch wiring.

Summary of the invention

The purpose of this utility model is that to design a kind of electric property at the problem that above-mentioned technology exists strong, and technique for coiling is simple, and coiling is few man-hour, and coil axes is to the filling rate height, the epoxy cast dry transformer coil that the transformer raw materials consumption is few.

The technical solution of the utility model is: a kind of epoxy cast dry transformer coil, it is that coiling 2 constitutes on mould 1.Each section coil is sequence arrangement from left to right.The innermost layer one circle lead of the two sections coils in the left side constitutes to the both sides winding from the middle linking part of two coils, second layer lead is made of to middle winding the both sides end points, winding constitutes the 3rd layer conductor to both sides by middle two-end-point, the 4th layer conductor is made of to middle winding the both sides end points, according to said method repeatedly each layer conductor of coiling up to coiling to the regulation the number of plies and the number of turn.The outer end end line A and the A ' of these two sections coils are respectively end of incoming cables and tap terminals.Establish the tap of pressure regulation tap at the tap terminals place.Each coil on above-mentioned two coils the right is a pair of with two coils all.Equal and the above-mentioned two sections coils of the tap of the winding method of every pair of coil and tap terminals thereof, pressure regulation tap are identical.The outer end end line X that rightmost is one section is a finish lead.

Every pair of coil reaches when each links to coil without lateral conductor at the hop count that the continuous winding method of internal layer can reduce required coil in the technical solution of the utility model.The tap of each tap terminals and pressure regulation tap is all drawn at each section coil skin.It is strong that the utility model makes this coil have electric property, and technique for coiling is simple, and coiling is few man-hour, and coil axes is to the filling rate height, the advantage that the transformer raw materials consumption is few.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of traditional epoxy cast dry transformer coil.

Fig. 2 is a structural representation of the present utility model.

Among the figure: 1, mould, 2, coil, 3, lateral conductor, 4, the end of incoming cables, 5, tap terminals, 6, the tap of pressure regulation tap, 7, middle linking part, 8, leading-out terminal.

Embodiment

Embodiment is as follows: shown in Figure 2 is the structural representation of the epoxy cast dry transformer coil of 10KV.It is that coiling 2 constitutes on mould 1.Its coil 1 from left to right is divided into four sections of L1, L2, L3, L4.The innermost layer one circle lead of the left side two sections coil L1, L2 all constitutes to the both sides coiling from the middle linking part 6 of two coils 2, second layer lead is made of to middle coiling the both sides end points, coiling constitutes the 3rd layer conductor to both sides by middle two-end-point, the 4th layer conductor is made of to middle coiling the both sides end points, according to said method repeatedly each layer conductor of coiling up to the regulation the number of plies and the number of turn.The outer end end line A and the A ' of these two sections coils 2 are respectively end of incoming cables 4 and tap terminals 5.Outwards leading-out end line (3,5) is the tap 6 of pressure regulation tap on the outer coil of L2 section.Two sections coil L3 in the right and L4 the two sections coil L1 of the winding method and the left side of lead and the winding method of L2 identical.The not end end line X of L4 section is a finish lead 8.The not end end line X ' of L3 section is a coil tap terminals 5.Outwards leading-out end line (4,6) is the tap 6 of pressure regulation tap on the outer coil 2 of L3 section.

Claims

A kind of epoxy cast dry transformer coil, it is that coiling constitutes on mould, it is characterized in that: each section coil is sequence arrangement from left to right, the innermost layer one circle lead of the two sections coils in the left side constitutes to the both sides coiling from the middle linking part of two coils, second layer lead is made of to middle coiling the both sides end points, coiling constitutes the 3rd layer conductor to both sides by middle two-end-point, the 4th layer conductor is made of to middle coiling the both sides end points, according to said method repeatedly each layer conductor of winding up to winding to the regulation the number of plies and the number of turn, the outer end end line A and the A ' of these two sections coils are respectively end of incoming cables and tap terminals, establish the tap of pressure regulation tap at the tap terminals place; Each coil on above-mentioned two coils the right is a pair of with two coils all, and the equal and above-mentioned two sections coils of the tap of the winding method of every pair of coil and tap terminals thereof, pressure regulation tap are identical, and the outer end end line X that rightmost is a section is a finish lead.