CN211828393U

CN211828393U - Embedded heat dissipation device of dry-type transformer

Info

Publication number: CN211828393U
Application number: CN201922425836.7U
Authority: CN
Inventors: 宋国华; 崔荣华; 刘立军; 袁宏均
Original assignee: Jiangsu Huandong Electric Co ltd
Current assignee: Jiangsu Huandong Electric Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-10-30
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an embedded heat abstractor of dry-type transformer, including dry-type transformer, the inside transformer core that sets up of dry-type transformer, there are a plurality of rectangular holes that are used for the radiating on the iron core outer packaging epoxy of dry-type transformer, still include the heat abstractor body, the heat abstractor body includes the shell body, the shell body is copper aluminium alloy integral type shell, in this internal embedding dry-type transformer rectangular hole of heat abstractor, shell body upper portion is a pipe, is fixed with a fan in the pipe, be stained with one deck heat conduction silica gel on the face of rectangular pipe and pipe contact. The utility model has novel structure design, and enhances the utilization of the heat dissipation holes on the transformer iron core based on the existing mainstream heat dissipation; due to small volume, the radiator can be matched with other radiating devices without influencing other radiating devices, so that the radiating effect is further improved; the structure of the device is simple and practical, the device is easy to produce, install and maintain, and the production and maintenance cost is greatly reduced.

Description

Embedded heat dissipation device of dry-type transformer

Technical Field

The utility model relates to a dry-type transformer heat dissipation technical field specifically is an embedded heat abstractor of dry-type transformer.

Background

The traditional transformer can produce a large amount of heats in the operation process, if these heats can not in time dispel then can lead to the temperature of transformer to exceed the insulating system temperature of transformer design, and then accelerates transformer insulation material's ageing, makes the transformer damage even, shortens the life of transformer, therefore the application of heat abstractor in the transformer is general. At present, some transformers (such as dry-type transformers) usually adopt a heat dissipation mode that air around the transformer is blown by installing a high-power fan, and heat exchange around the transformer is realized through air flow.

Since the dry-type transformer can be deep into the load center, rapid development has been achieved in recent years, and the requirement of users for safety and reliability is higher and higher. From the research on the influence of the cooling mode and the cooling structure on the flow field and the temperature field of the non-encapsulated dry-type transformer (article number: 1001-8425 (2010) 02-0019-05), it can be known that the hot-spot temperature rise position of the high-voltage winding or the low-voltage winding is located at the middle upper part of the winding model, but not at the outlet, due to the influence of the port effect. The air flows in an air channel formed between the high-voltage winding and the low-voltage winding, and due to the influence of the bottom fan and the top fan, the temperature of the heated air rises, the volume of the heated air expands, and the heated air flows upwards along the air channel. At present, the dry type transformer has two cooling modes of air self-cooling and forced air cooling. The forced air cooling mode is divided into the following modes according to different installation forms of the fan: bottom blowing, top pumping and bottom blowing top pumping. However, the fan needs to occupy the space of the electric room, and the power is large, so that the requirements of energy conservation, environmental protection and economy are not met, and therefore, it is necessary to design a transformer heat dissipation device capable of solving the problems.

One of the prior art solutions is generally a natural heat dissipation technology relying on a heat conducting member, which has poor heat dissipation effect, and therefore, needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an embedded heat abstractor of dry-type transformer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an embedded heat abstractor of dry-type transformer, includes dry-type transformer, the inside transformer core that sets up of dry-type transformer, there are a plurality of square slot holes that are used for the radiating on the transformer core outer packaging epoxy of dry-type transformer, still include the heat abstractor body, the heat abstractor body includes the shell body, the shell body is copper aluminium alloy integral type shell, in the embedded dry-type transformer of heat abstractor body, shell body upper portion is a pipe, pipe size and iron core size rather than last louvre size phase-match are fixed with a fan in the pipe for thermal derivation.

Preferably, a metal dust screen is arranged above the circular tube; the transformer heat dissipation device comprises a heat dissipation device body, wherein a layer of heat conduction silica gel is adhered to the surface, in contact with a round pipe, of a rectangular pipe, the lower portion of the heat dissipation device body is a rectangular pipe which is slightly smaller than the size of a heat dissipation hole of the transformer, and the rectangular pipe is inserted into the heat dissipation hole.

Preferably, the thickness of the heat-conducting silica gel is 1mm-2 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has novel structure design, and enhances the utilization of the heat dissipation holes on the transformer iron core based on the existing mainstream heat dissipation; due to small volume, the radiator can be matched with other radiating devices without influencing other radiating devices, so that the radiating efficiency is further improved; the structure is simple and practical, the production, installation and maintenance are easy, the production and maintenance cost is greatly reduced, and the practicability and the high cost performance are integrated.

Drawings

Fig. 1 is the utility model discloses the louvre schematic diagram of dry-type transformer and transformer self.

FIG. 2 is a schematic diagram of the transformer core and the heat dissipation holes of the transformer according to the present invention;

fig. 3 is a schematic view of the structure of the heat dissipation device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an embedded heat abstractor of dry-type transformer, includes dry-type transformer 1, the inside transformer core 3 that sets up of dry-type transformer, there are a plurality of square slot holes that are used for the heat dissipation on the 3 outer encapsulation epoxy of transformer core of dry-type transformer 1, still include the heat abstractor body, the heat abstractor body includes shell body 7, shell body 7 is copper aluminium alloy integral type shell, in this internal embedding dry-type transformer 1 of heat abstractor, shell body 7 top is a pipe, 2 size phase-matchs of pipe size and 3 sizes of iron core and last louvre are fixed with a fan 4 in the pipe for thermal derivation.

In the utility model, a metal dust screen 6 is arranged above the round tube; reducing heat build-up by reducing dust fall; a layer of heat-conducting silica gel 5 is adhered to the surface of the rectangular pipe, which is in contact with the circular pipe, in the middle of the heat dissipation device body, and the thickness of the heat-conducting silica gel 5 is 1mm-2 mm; the existence of heat conduction silica gel 5 can weaken the device during operation because the noise that vibrations produced, further promotes the leakproofness between rectangle pipe and louvre 2 simultaneously heat abstractor body lower part is the rectangle pipe that is a little bit less than transformer self louvre 2 sizes, rectangle pipe inserts in louvre 2.

The invention inserts the cuboid tube with the fan 4 into the heat dissipation hole 2 of the transformer, when in work, the heat can be pumped out of the transformer through the pipeline and exhausted outside the transformer, and the utilization rate of the air flow is greatly improved due to the excellent sealing property, thereby achieving the excellent heat dissipation effect.

In summary, the utility model has novel structure design, and enhances the utilization of the heat dissipation holes on the transformer iron core based on the existing mainstream heat dissipation; due to small volume, the radiator can be matched with other radiating devices without influencing other radiating devices, so that the radiating efficiency is further improved; the structure is simple and practical, the production, installation and maintenance are easy, the production and maintenance cost is greatly reduced, and the practicability and the high cost performance are integrated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an embedded heat abstractor of dry-type transformer, includes dry-type transformer (1), its characterized in that: inside transformer core (3) that sets up of dry-type transformer, there are a plurality of square slot holes that are used for the heat dissipation on the transformer core (3) outer packaging epoxy of dry-type transformer (1), still include the heat abstractor body, the heat abstractor body includes shell body (7), shell body (7) are copper aluminium alloy integral type shell, in this internal embedding dry-type transformer (1) of heat abstractor, shell body (7) top is a pipe, the pipe size and iron core (3) size and louvre (2) size phase-match above that are fixed with a fan (4) in the pipe for thermal derivation.

2. The embedded heat dissipation device of a dry-type transformer as recited in claim 1, wherein: a metal dust screen (6) is arranged above the circular tube; the heat dissipation device comprises a heat dissipation device body, wherein the middle part of the heat dissipation device body is adhered with a layer of heat conduction silica gel (5) on the surface, in contact with a round pipe, of a rectangular pipe, the lower part of the heat dissipation device body is the rectangular pipe which is slightly smaller than the size of a heat dissipation hole (2) of a transformer, and the rectangular pipe is inserted into the heat dissipation hole (2).

3. The embedded heat dissipation device of a dry-type transformer as recited in claim 2, wherein: the thickness of the heat-conducting silica gel (5) is 1mm-2 mm.