CN104157417A - High-voltage winding for epoxy cast amorphous alloy dry-type transformer - Google Patents

Abstract

The invention discloses a high-voltage winding for an epoxy cast amorphous alloy dry-type transformer. The high-voltage winding is wound on a winding winding mold. There is an air passage structure between the layers, and the inner layer and the outer layer include a glass mesh cloth layer, several wire layers and a glass mesh cloth layer in sequence from the inside to the outside, and wires are arranged between adjacent wire layers. Interlayer insulating DMD layer. The high-voltage winding of the present invention is provided with an air passage structure, which greatly improves the heat dissipation efficiency of the high-voltage winding itself, reduces production costs, and reduces investment costs.

Description

A high-voltage winding for an epoxy cast amorphous alloy dry-type transformer

technical field

The invention relates to a high-voltage winding for a transformer, in particular to a high-voltage winding for an epoxy cast amorphous alloy dry-type transformer.

Background technique

With the promotion and implementation of national energy-saving and people-benefiting policies, the demand for amorphous alloy transformers will develop rapidly. Considering the development of the first 10kV amorphous alloy dry-type transformer in China, amorphous dry-type transformers have gradually been recognized by users. The current market demand Growing.

However, the high price and low production efficiency of amorphous alloy dry-type transformers have become important reasons for the greatly increased investment costs.

As one of the core components of the epoxy cast amorphous alloy dry-type transformer, the high-voltage winding has the defects of high winding temperature rise and high production cost in actual production.

Contents of the invention

The object of the present invention is to provide a high-voltage winding for an epoxy cast amorphous alloy dry-type transformer in order to solve the above problems.

The purpose of the present invention is achieved like this:

A high-voltage winding for an epoxy cast amorphous alloy dry-type transformer of the present invention, the high-voltage winding is wound on a winding winding mold, the high-voltage winding includes an inner layer and an outer layer, and the inner layer and the outer layer There is an air passage structure between them, and the inner layer and the outer layer include a glass mesh cloth layer, several wire layers and a glass mesh cloth layer in sequence from the inside to the outside, and a wire layer is arranged between adjacent wire layers between insulating DMD layers.

In the above-mentioned high-voltage winding for an epoxy-cast amorphous alloy dry-type transformer, the air passage structure includes several holes extending along the height direction of the high-voltage winding.

The above-mentioned high-voltage winding for an epoxy-cast amorphous alloy dry-type transformer, wherein the cross-section of the high-voltage winding has a square ring or elliptical ring structure.

The high-voltage winding of the present invention is provided with an air passage structure, which increases the heat dissipation surface and the heat dissipation air passage, increases the heat dissipation efficiency of the high-voltage winding itself, reduces the temperature rise of the high-voltage winding, and greatly improves the temperature rise margin , can reduce the high-voltage winding copper wire gauge, reduce the amount of wire, and reduce the cost.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a partial enlarged view of A in Fig. 1 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Fig. 1, the high-voltage winding for the epoxy casting type amorphous alloy dry-type transformer of the present invention is shown in the figure, this high-voltage winding is wound on the winding winding mold 4, and the high-voltage winding of the present invention includes an inner layer 1 and an outer layer 2. An air channel structure 3 is provided between the inner layer 1 and the outer layer 2, and the air channel structure 3 includes several holes extending along the height direction of the high voltage winding.

As shown in Figure 2, the inner layer 1 and the outer layer 2 are similar in structure, and they all include a glass mesh cloth layer 21, a number of wire layers 22 and a glass mesh cloth layer 21 from the inside to the outside, and the adjacent wire layers 22 Interlayer insulating DMD layer 23 is provided between them.

The cross-section of the high-voltage winding of the present invention is in the form of a square ring or an elliptical ring structure.

The air passage structure 3 in the present invention increases the heat dissipation surface and the heat dissipation air passage, increases the heat dissipation efficiency of the high voltage winding itself, reduces the temperature rise of the high voltage winding, and can reduce the high voltage winding when the temperature rise margin is greatly improved Copper Wire Gauge

The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent The technical solutions should also belong to the category of the present invention and should be defined by each claim.

Claims (3)

1. an epoxy pouring type amorphous alloy dry-type transformer high pressure winding, described high pressure winding is set around on coil-winding die, it is characterized in that, described high pressure winding comprises internal layer and skin, between described internal layer and skin, be provided with air passage structure, described internal layer and skin all comprise glass grid layer of cloth, some conductor layers and glass grid layer of cloth from the inside to the outside successively, and between adjacent conductor layer, are provided with wire layer insulation DMD layer.

2. a kind of epoxy pouring type amorphous alloy dry-type transformer high pressure winding as claimed in claim 1, is characterized in that, described air passage structure comprises that several extend the duct arranging along described high pressure winding short transverse.

3. a kind of epoxy pouring type amorphous alloy dry-type transformer high pressure winding as claimed in claim 1, is characterized in that, the cross section of described high pressure winding is square and encircles or elliptical ring structure.