CN207852455U - A dry type power transformer - Google Patents

Abstract

The utility model discloses a dry-type power transformer, which includes a coaxially arranged iron core, a low-voltage coil and a high-voltage coil, wherein the low-voltage coil is wound on the iron core, a first insulating layer is cast on the low-voltage coil, a plurality of superconducting heat pipes are arranged in the first insulating layer at intervals, the first insulating layer is connected to one end of the superconducting heat pipe through a heat sink, the high-voltage coil is wound on the first insulating layer, and a second insulating layer is cast on the high-voltage coil. The utility model arranges the superconducting heat pipe between the low-voltage coil and the high-voltage coil, so that the heat of the low-voltage coil and the high-voltage coil is quickly transferred to the heat sink for heat dissipation. This heat dissipation method has low cost and good heat dissipation effect, prolongs the service life of the transformer, and improves the stability performance and overload operation capability of the dry-type power transformer.

Description

A dry type power transformer

technical field

The utility model relates to the technical field of voltage stabilizers, in particular to a dry-type power transformer.

Background technique

Dry-type power transformer is a transformer with high electrical strength, mechanical strength and heat resistance. It is widely used in lighting of high-rise buildings, CNC machinery and equipment in airports and docks. The transformer will generate a lot of heat during use. The general cooling methods are divided into natural air cooling and forced air cooling. In the existing transformers, most of the high-voltage coils and low-voltage coils are integrated in the insulating layer. When the transformer occurs When a thermal fault occurs, the temperature of the winding rises rapidly, and the traditional cooling method cannot reduce the internal temperature of the transformer well, resulting in the aging of the insulation layer, greatly shortening the life of the transformer, and more seriously, causing the transformer to burn out or causing a serious fault in the power grid, which limits the transformer. Ability to operate at overload.

Contents of the invention

The purpose of this utility model is to provide a dry-type power transformer to solve the above problems.

The technical scheme that the utility model adopts for realizing the above object is:

A dry-type power transformer, which includes a coaxially arranged iron core, a low-voltage coil and a high-voltage coil, the low-voltage coil is wound on the iron core, a first insulating layer is poured on the low-voltage coil, and the first A number of superconducting heat pipes are arranged at intervals in the insulating layer, and the first insulating layer is connected to one end of the superconducting heat pipe through a heat sink. The high-voltage coil is wound on the first insulating layer, and the high-voltage coil is cast There is a second insulating layer.

Preferably, the other end of the superconducting heat pipe extends out of the first insulating layer.

Preferably, the superconducting heat pipe is a hollow pipe.

Preferably, the superconducting heat pipe is a round pipe or a square pipe.

Preferably, the iron core is an amorphous component.

Preferably, the thickness of the first insulating layer is greater than the thickness of the second insulating layer.

Preferably, the number of the superconducting heat pipes is eight.

Preferably, the first insulating layer and the second insulating layer are made of epoxy resin.

The beneficial effects of the utility model are: the utility model is simple and reasonable in structure and ingenious in design. By arranging the superconducting heat pipe between the low-voltage coil and the high-voltage coil, the heat of the low-voltage coil and the high-voltage coil is quickly transferred to the heat sink for heat dissipation. This heat dissipation method has low cost and good heat dissipation effect, prolongs the service life of the transformer, and improves the stability and overload operation ability of the dry-type power transformer.

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Embodiment: As shown in Figure 1, the utility model is a dry-type power transformer, which includes a coaxially arranged iron core 1, a low-voltage coil 2 and a high-voltage coil 3, and the low-voltage coil 2 is wound on the iron core 1 On the low-voltage coil 2, a first insulating layer 4 is poured, and a number of superconducting heat pipes 5 are arranged in the first insulating layer 4 at intervals. Between the first insulating layer 4 and one end of the superconducting heat pipe 5 The high voltage coil 3 is wound on the first insulating layer 4 through the heat sink connection, and the high voltage coil 3 is cast with a second insulating layer 6 .

In this embodiment, the other end of the superconducting heat pipe 5 extends out of the first insulating layer 4 .

In this embodiment, the superconducting heat pipe 5 is a hollow pipe.

In this embodiment, the superconducting heat pipe 5 is a round pipe or a square pipe.

In this embodiment, the iron core 1 is an amorphous component.

In this embodiment, the thickness of the first insulating layer 4 is greater than the thickness of the second insulating layer 6 .

In this embodiment, the number of the superconducting heat pipes 5 is eight.

In this embodiment, the first insulating layer 4 and the second insulating layer 6 are made of epoxy resin.

The utility model has a simple and reasonable structure and an ingenious design. By setting the superconducting heat pipe 5 between the low-voltage coil 2 and the high-voltage coil 3, the heat of the low-voltage coil 2 and the high-voltage coil 3 is quickly transferred to the heat sink for heat dissipation. This heat dissipation method The cost is low, the heat dissipation effect is good, the service life of the transformer is extended, and the stability and overload operation ability of the dry-type power transformer are improved.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any person familiar with the art, without departing from the scope of the technical solution of the present utility model, can use the method and technical content disclosed above to make many possible changes and modifications to the technical solution of the utility model, or modify it to an equivalent change Equivalent embodiment. Therefore, all equivalent changes made according to the shape, structure and principle of the utility model that do not deviate from the technical solution of the utility model should be covered within the protection scope of the utility model.

Claims (8)

1. a kind of dry-type power transformer, it is characterised in that：It includes iron core, low-voltage coil and the high-tension coil of coaxial arrangement, The low-voltage coil is wrapped on the iron core, has the first insulating layer in the low-voltage coil upper, in first insulating layer Spacing distance is provided with several super heat-conductive pipes, is connected by cooling fin between first insulating layer and the super heat-conductive pipe one end, The high-tension coil is wrapped on first insulating layer, has second insulating layer in the high-tension coil upper.

2. dry-type power transformer according to claim 1, which is characterized in that the super heat-conductive pipe other end extends described First insulating layer.

3. dry-type power transformer according to claim 1, which is characterized in that the super heat-conductive pipe is hollow tube.

4. dry-type power transformer according to claim 1, which is characterized in that the super heat-conductive pipe is pipe or rectangular tube.

5. dry-type power transformer according to claim 1, which is characterized in that the iron core is noncrystal component.

6. dry-type power transformer according to claim 1, which is characterized in that the thickness of first insulating layer is more than described The thickness of second insulating layer.

7. dry-type power transformer according to claim 1, which is characterized in that the quantity of the super heat-conductive pipe is eight.

8. dry-type power transformer according to claim 1, which is characterized in that first insulating layer, second insulating layer material Matter is epoxy resin.