Transformer noise reduction structure

Abstract

The utility model relates to the technical field of transformer noise reduction, in particular to a transformer noise reduction structure which comprises a transformer box body, a heat dissipation pipe, a high-voltage porcelain sleeve, a low-voltage porcelain sleeve, an iron core and a three-phase winding. The three-phase winding is arranged in the transformer box body, the periphery of the interior of the transformer box body is fixedly connected with sound absorption foam, the heat dissipation pipe penetrates through the heat dissipation fins, and the surface of the three-phase winding is wound with a sound insulation plastic protection cover. According to the transformer, four sound insulation is achieved in total through the cooling fins of the external honeycomb sound receiving structure and the sound insulation plastic protection cover wrapping the three-phase winding, noise generated during operation of the transformer can be effectively reduced, the cushioning and sound insulation gaskets are arranged between the iron core and the strip-shaped clamping pieces, and the damping cushioning device is arranged on the base. And the unique cushioning structure ensures that the vibration generated in the working process can be absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer noise reduction, in particular to a transformer noise reduction structure. Background Art

[0002] In recent years, with the improvement of people's living standards, residents' electricity consumption has increased rapidly, leading to an increase in transformers in residential areas. At present, transformers are basically located next to residential houses or inside buildings. In addition, large and medium-sized transformers are increasingly used in residential areas or public places. Power transformers are one of the most complex and core electrical equipment in the power system structure. With the increase of voltage level and transformer capacity, the noise of transformers is getting louder and louder. This noise not only pollutes the living environment, but also affects the service life of the transformer. Noise reduction during normal operation of the transformer is an issue of concern. In view of the multiple pressures of energy conservation, environmental protection, social economy, etc., how to design and produce low-vibration and low-noise power transformers to achieve vibration and noise reduction has become a research focus of manufacturers and the State Grid, and is a key practical problem that needs to be solved urgently. In view of this, a transformer noise reduction structure is provided. Utility Model Content

[0003] The main purpose of the present invention is to provide a transformer noise reduction structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a transformer noise reduction structure is provided, including a transformer box, a heat dissipation pipe, a high-voltage porcelain bushing, a low-voltage porcelain bushing, an iron core and a three-phase winding. The front, back, left, right, upper and lower surfaces of the transformer box are fixedly connected with honeycomb sound-absorbing heat sinks. Sound-absorbing foam is fixedly connected to the four sides of the inside of the transformer box. The heat dissipation pipe passes through the heat sink. The surface of the three-phase winding is wrapped with a sound-insulating plastic protective cover. The inside of the sound-insulating plastic protective cover is a honeycomb hollow structure, and an uneven sound-absorbing fluff layer is attached to its inner surface.

[0005] As an optimal technical solution of the present invention: a plurality of heat dissipation pipes are fixedly connected to the front, back, left and right surfaces of the transformer box, and the heat dissipation pipes are elliptical.

[0006] As an optimal technical solution of the present invention: the iron core is fixedly connected to the transformer box by a strip clamp, the iron core has two rectangular openings, the three-phase winding is wound on the iron core, and a shock-absorbing and sound-isolating gasket is provided between the strip clamp and the iron core.

[0007] As an optimal technical solution of the present invention: the high-voltage porcelain bushing and the low-voltage porcelain bushing are symmetrically fixedly connected to the upper part of the transformer box, wherein there are three high-voltage porcelain bushings and three low-voltage porcelain bushings respectively, and the lower ends of the high-voltage porcelain bushing and the low-voltage porcelain bushing are fixedly connected to the three-phase winding through the high-voltage outlet terminal and the low-voltage outlet terminal respectively.

[0008] As a preferred technical solution of the present invention: a plurality of legs are fixedly connected to the lower end of the transformer box, and the legs are arranged in the middle of the damping buffer fixedly connected to the base.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. In this transformer noise reduction structure, sound-absorbing foam is set inside the box, the iron core is equipped with a shock-absorbing sound-isolating gasket, the external heat sink with a honeycomb sound-absorbing structure and the sound-isolating plastic protective cover wrapped around the three-phase winding have four layers of sound insulation, which can effectively reduce the noise generated during the operation of the transformer.

[0011] 2. In this transformer noise reduction structure, a shock-absorbing and sound-isolating gasket is provided between the iron core and the strip clamp, and a damping shock absorber is provided at its base. The unique shock-absorbing structure ensures that the vibration generated during operation can be absorbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the transformer noise reduction structure in a preferred embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the transformer components in the preferred embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of a transformer box in a preferred embodiment of the present utility model;

[0015] Figure 4 This is a schematic diagram of a base and a damping shock absorber in a preferred embodiment of the present utility model;

[0016] Figure 5 This is a partial enlarged view of the area between the strip clamp and the core in a preferred embodiment of the present utility model;

[0017] Figure 6 This is a schematic diagram of a soundproof plastic protective cover in a preferred embodiment of the present utility model;

[0018] Figure 7 This is a partial enlarged view of the sound insulation plastic protective cover in the preferred embodiment of the present utility model.

[0019] Illustrations: 1. Transformer box; 2. Heat dissipation pipe; 3. Honeycomb sound-absorbing heat sink; 4. Heat sink; 5. High-voltage porcelain bushing; 511. High-voltage outlet terminal; 6. Low-voltage porcelain bushing; 611. Low-voltage outlet terminal; 7. Strip clamp; 711. Shock-absorbing and sound-isolating gasket; 8. Iron core; 9. Three-phase winding; 10. Sound-insulating plastic protective cover; 1001. Honeycomb silencer hole; 1002. Thorn-shaped protrusion; 11. Sound-absorbing foam; 12. Base; 1201. Damping shock absorber; 13. Support leg. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-Figure 7 As shown, the purpose of this embodiment is to provide a transformer noise reduction structure, including a transformer box 1, a heat dissipation pipe 2, a high-voltage porcelain bushing 5, a low-voltage porcelain bushing 6, an iron core 8 and a three-phase winding 9. The front, back, left, right, upper and lower surfaces of the transformer box 1 are fixedly connected with honeycomb sound-absorbing heat sinks 3, and the four sides of the interior of the transformer box 1 are fixedly connected with sound-absorbing foam 11. The heat dissipation pipe 2 is fixed on the transformer box 1 and passes through the heat sink 4. The three-phase winding 9 is arranged inside the transformer box 1 and is wrapped with a sound-insulating plastic protective cover 10 on the surface. The sound-insulating plastic protective cover 10 has a honeycomb hollow structure, and its inner surface is attached with uneven honeycomb silencer holes 1001.

[0022] A plurality of heat dissipation tubes 2 are fixedly connected to the front, back, left and right surfaces of the transformer box 1 , and the heat dissipation tubes 2 are elliptical in shape.

[0023] The iron core 8 is fixedly connected to the transformer box 1 by a strip clamp 7. The iron core 8 has two rectangular openings. The three-phase winding 9 is wound on the iron core 8. A shock-absorbing and sound-isolating gasket 711 is provided between the strip clamp 7 and the iron core 8.

[0024] The high-voltage porcelain bushing 5 and the low-voltage porcelain bushing 6 are symmetrically fixedly connected to the upper part of the transformer box 1, wherein there are three high-voltage porcelain bushings 5 ​​and three low-voltage porcelain bushings 6. The lower ends of the high-voltage porcelain bushing 5 and the low-voltage porcelain bushing 6 are fixedly connected to the three-phase winding 9 through the high-voltage outlet terminal 511 and the low-voltage outlet terminal 611 respectively.

[0025] A plurality of legs 13 are fixedly connected to the lower end of the transformer box 1 , and the legs 13 are mounted in the middle of the damping buffer 1201 on the base 12 .

[0026] The transformer box 1 is fixedly connected to the surrounding areas with sound-absorbing foam 11, and the front, back, left, right, top and bottom surfaces of the transformer box 1 are fixedly connected with honeycomb sound-absorbing heat sinks 3. In this way, when the transformer is working, the transformer box will effectively absorb the noise emitted. The heat dissipation pipe 2 passes through the heat sink 4. The heat dissipation pipe 2 is elliptical, which makes the heat dissipation effect better. The high-voltage porcelain bushing 5 and the low-voltage porcelain bushing 6 are symmetrically fixedly connected to the upper part of the transformer box 1. There are three high-voltage porcelain bushings 5 ​​and three low-voltage porcelain bushings 6. The lower ends of the high-voltage porcelain bushing 5 and the low-voltage porcelain bushing 6 are fixedly connected to the three-phase winding 9 through the high-voltage outlet head 511 and the low-voltage outlet head 611 respectively. The iron core 8 is fixed by the strip clamp 7 It is fixedly connected to the transformer box 1, and the iron core 8 has two rectangular openings. The three-phase winding 9 is wound on the iron core 8. A shock-absorbing and sound-insulating gasket 711 is provided between the strip clamp 7 and the iron core 8. Whenever the transformer is working, the iron core 8 inside it will vibrate. At this time, the vibration of the iron core 8 will be absorbed by the shock-absorbing and sound-insulating gasket 711, effectively reducing the generation of noise. A sound-insulating plastic protective cover 10 is wrapped around the surface of the three-phase winding 9. The interior of the sound-insulating plastic protective cover 10 is provided with densely arranged honeycomb silencer holes 1001. The inner wall of each honeycomb silencer hole 1001 is distributed with irregularly arranged thorn-shaped protrusions 1002, and the surface of each thorn-shaped protrusion 1002 is provided with sound-absorbing fluff.

[0027] The densely packed honeycomb silencer holes 1001 are an excellent acoustic design. Their regular hexagonal arrangement helps disperse and absorb sound waves, reducing sound reflection and resonance. The presence of the fuzz greatly increases the roughness and surface area of ​​the material surface, helping to capture and disperse more sound wave energy. When sound waves come into contact with these fuzz, they will be reflected and scattered multiple times, thereby reducing the reflection intensity of the sound. This can also effectively reduce the electromagnetic noise generated when the transformer is working.

[0028] The lower end of the transformer box 1 is fixedly connected to a plurality of legs 13, and the legs 13 are mounted in the middle of the damping shock absorber 1201 fixedly connected to the base 12. Such a structure ensures that the vibration generated during operation can be absorbed and the noise generation can be reduced.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A transformer noise reduction structure, comprising a transformer box (1), a heat dissipation pipe (2), a high-voltage porcelain bushing (5), a low-voltage porcelain bushing (6), an iron core (8) and a three-phase winding (9), characterized in that: Honeycomb sound-absorbing heat sinks (3) are fixedly connected to the front, back, left, right, top and bottom surfaces of the transformer box (1); sound-absorbing foam (11) is fixedly connected to the four sides of the interior of the transformer box (1); the heat pipe (2) passes through the heat sink (4); a sound-insulating plastic protective cover (10) is wound around the surface of the three-phase winding (9); the sound-insulating plastic protective cover (10) has a honeycomb hollow structure, and its inner surface is attached with uneven honeycomb sound-absorbing holes (1001).

2. The transformer noise reduction structure according to claim 1, characterized in that: A plurality of heat dissipation pipes (2) are fixedly connected to the front, rear, left and right surfaces of the transformer box (1), and the heat dissipation pipes (2) are elliptical.

3. The transformer noise reduction structure according to claim 1, characterized in that: The iron core (8) is fixedly connected to the transformer box (1) by a strip clamp (7), the iron core (8) is provided with two rectangular openings, the three-phase winding (9) is wound on the iron core (8), and a shock-absorbing and sound-isolating gasket (711) is provided between the strip clamp (7) and the iron core (8).

4. The transformer noise reduction structure according to claim 1, characterized in that: The high-voltage porcelain bushing (5) and the low-voltage porcelain bushing (6) are symmetrically fixedly connected to the upper part of the transformer box (1), wherein there are three high-voltage porcelain bushings (5) and three low-voltage porcelain bushings (6), and the lower ends of the high-voltage porcelain bushing (5) and the low-voltage porcelain bushing (6) are fixedly connected to the three-phase winding (9) through the high-voltage outlet terminal (511) and the low-voltage outlet terminal (611), respectively.

5. The transformer noise reduction structure according to claim 1, characterized in that: A plurality of legs (13) are fixedly connected to the lower end of the transformer box (1), and the legs (13) are mounted in the middle of a damping buffer (1201) fixedly connected to the base (12).

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