TWM488735U - Low noise apparatus for transformer - Google Patents

Description

Transformer low noise device

The present invention relates to a low noise device for a transformer, and more particularly to a low noise device surrounding a casing of a transformer surrounded by a damped vibrating plate and a sound absorbing material.

According to the general purpose of the UHV transformer for power transmission and distribution, the outer casing is generally set as a rectangular hollow closed casing to be placed on the ground, the core and the winding are preset inside the casing, and the transformer oil (insulating oil) is filled with Works with the cooling system.

In the manufacturing process of the conventional transformer, the casing must be subjected to a vacuuming process, and in order to improve the structural strength of the casing, the reinforcing plate body continuously protruding outward is welded to the outer periphery of the lower portion of the casing. When the transformer is in operation, its core and winding will generate noise during the operation, and the upper and lower reinforcing plates are separated by about 120 cm and 210 cm on the ground, which is above the waist of the person on the ground and below the head. The location, therefore, the noise transmitted from the middle section of the transformer seriously affects the surrounding environment and personnel, which is really troublesome for manufacturers and power companies, but it is too helpless to overcome the problem.

The creator of this case has been unable to improve the noise transmitted from the middle section of the transformer casing. Therefore, it is aimed at the crux of the problem and began to seek improvement and make up for it. In order to seek a reasonable solution, after numerous studies. Analysis, design, and finally complete the transformer low noise device of this creation.

The main purpose and function of this creation is that the transformer is arranged around the middle of the middle of the casing with a damper vibration plate, and the sound-absorbing material fixing seat and its sound absorbing material are designed to reduce the resonance noise transmitted by the transformer from the casing. To avoid interference with the surrounding environment and personnel, and to facilitate the production and installation, and reduce costs.

In order to achieve the above, the low noise device is disposed between two opposite reinforcing convex frames on the outer side of the casing of the transformer; the low noise device comprises a damper vibration plate disposed on the outer side of the casing, and the opposite edge edges thereof are divided. Do not connect to the opposite reinforcing convex frame to form a closed space between the inner side of the damping vibration plate and the outer side of the casing; a sound absorbing material fixing seat is arranged along the inner side of the damping vibration plate, and one side of the sound absorbing material fixing seat is fixed to the damping vibration The inner side of the board is separated from the outer side of the casing, and the sound absorbing material fixing seat is provided with a sound absorbing material, so that the sound absorbing material is spaced apart from the outer side of the casing of the transformer.

In a preferred embodiment, the damper vibration plate, the sound absorbing material fixing base, the sound absorbing material and the two opposite reinforcing convex frames are laterally disposed around the outer circumference of the casing, and the two ends of the sound absorbing material fixing seat and the opposite reinforcing convex frame are spaced apart from each other.

In a preferred embodiment, the damper plate has a thickness of less than 3 mm. Further, a resin damping layer is disposed on each of the inner side and the outer side of the damper vibration plate.

In a preferred embodiment, the damper plate is formed by sequentially connecting a plurality of rectangular plates, and a rectangular sound absorbing material fixing seat is disposed on each of the plurality of plates, and each of the plates is provided with upper and lower opposite end edges and two opposite side edges. Do not exceed the outer circumference of the sound absorbing material holder.

Further, each plate of the damper vibration plate is set as a vibration-damping metal plate, and the upper and lower opposite edges of each plate are respectively welded and connected to the opposite reinforcing convex frame, and the two side edges of each plate are welded and connected in sequence.

In a preferred embodiment, the plurality of sound absorbing material fixing seats are internally provided with a plurality of crosses The partition plate is divided into a plurality of accommodating spaces to provide a sound absorbing material of a relative shape.

Further, a cover plate for allowing noise to pass through is disposed on the other side of the plurality of sound absorbing material fixing seats to block the positioning of the sound absorbing materials. Further, a plurality of weighted bumps are disposed on the other side of the plurality of sound absorbing material fixing seats.

1‧‧‧Transformer

11‧‧‧Shell

12‧‧‧Reinforced convex frame

13‧‧‧Confined space

14‧‧‧Reinforced convex frame

15‧‧‧Insulating oil

2‧‧‧damper plate

21‧‧‧ plates

22‧‧‧ edge

23‧‧‧ side edge

24‧‧‧ edge

25‧‧‧ side edge

26‧‧‧Connecting Department

27‧‧‧ resin damping layer

3‧‧‧Acoustic material holder

31‧‧‧ side panels

32‧‧‧Baffle

33‧‧‧ accommodating space

34‧‧‧weight bumps

35‧‧‧Cards

4‧‧‧ Sound absorbing materials

5‧‧‧ Cover

The first figure is a perspective view of the low-noise device of the preferred embodiment of the present invention installed on the outer circumference of the transformer; the second figure is a structural view of the middle section of the transformer along the transverse cross-section, and the low-noise device is displayed; Figure 1 is a structural view of the middle section of the transformer along a longitudinal section, and shows a low noise device unit; the fourth figure is a perspective view of the low noise device unit type of the preferred embodiment of the present invention; the fifth figure is a fourth figure low noise device The enlarged view of the unit type along the transverse cross section; the sixth figure is the perspective view of the fourth type of low noise device unit type plate and the sound absorbing material fixing seat; the seventh picture is the sixth picture of the sound absorbing material fixing seat filled with sound absorbing material A perspective view of the inner and outer resin damping layers is added.

For the purpose of achieving the above objectives, the technical means and its efficacy, the following is a description of the possible embodiments, and the following diagrams are explained as follows: First, please refer to the first to fourth figures, the low noise device of the present invention is mainly Applicable to UHV transformers for power transmission and distribution. As shown in the figure, the outer casing of the transformer 1 is also roughly arranged as a rectangular closed casing 11 for being placed on the ground, in the casing 11 The upper and lower sections of the outer circumference are respectively welded with reinforcing convex frames 12 and 14 which are continuously laterally surrounded, and the inside of the casing 11 is fixed with an associated core and winding, and is filled with the relevant insulating oil 15 (refer to the third figure). The low-noise device of the present invention is disposed between the reinforcing convex frames 12 and 14 disposed on the outer circumference of the casing 11 of the transformer 1 in the upper and lower directions or in the outer plurality of in-line, so as to reduce the resonance noise transmitted from the transformer 1 by the casing 11.

In the preferred embodiment shown in the first to seventh embodiments, the present low noise device includes a damper plate 2 laterally surrounding the outer circumference or the outer side of the casing 11 of the transformer 1, the upper and lower opposite ends 22, 24 are respectively connected to the opposite reinforcing convex frames 12, 14 to form a sealed space 13 between the inner circumference or the inner side of the damper vibration plate 2 and the outer circumference or the outer side of the casing 11; along the inner circumferential direction or the inner side of the damper vibration plate 2 Or a plurality of sound absorbing material fixing bases 3 are continuously disposed, and one side fitting side plate 31 of each sound absorbing material fixing base 3 is fixed to the inner side of the damper vibration plate 2, and the other side thereof is spaced apart from the outer side of the casing 11, and the upper and lower ends thereof And the relative reinforcing convex frames 12 and 14 are spaced apart from each other, and the sound absorbing material fixing base 3 is internally provided with the sound absorbing material 4 so as to be spaced apart from the outer circumference or the outer side of the casing 11 of the transformer 1, and the inner side and the outer side of the damper vibration plate 2 can be respectively provided. There is a resin damping layer 27 (see the seventh figure) to enhance the damping effect. Continuing with the description of the combined structural design of the low-noise device, as shown in the first to seventh figures, the damper plate 2 is formed by sequentially connecting a plurality of rectangular plates 21, and each of the plates 21 of the damper plate 2 can be set. For the vibration-damping metal plate, for example, a steel plate having a thickness of 3 mm (including the following) may be used, and a rectangular sound-absorbing material fixing base 3 is respectively welded on the inner side of the plurality of plates 21 to form a unit type, and the upper and lower ends of each of the plates 21 are opposite. The edges 22, 24 and the opposite side edges 23, 25 respectively extend beyond the outer periphery of the sound absorbing material fixing base 3, and the upper and lower opposite end edges 22, 24 of the respective plate pieces 21 are welded to the opposite reinforcing convex frames 12, 14 respectively to form a connecting portion 26. (see the third picture), and the boards The side edges 23, 25 of the sheet 21 are welded in series to form a sealed space 13 between the inner circumference of the damper diaphragm 2 and the outer circumference of the casing 11.

Further, the damper vibrating plate 2 has a plurality of unit type sheets 21, and a plurality of partition plates 32 are disposed in the respective cross portions of the sound absorbing material fixing bases 3 to be divided into a plurality of accommodating spaces 33 (refer to the sixth drawing) for respectively The sound absorbing material 4 having a relatively shaped shape is filled. In a preferred embodiment, the other side of each of the sound absorbing material holders 3 may be provided with a cover 5 or a sound absorbing panel (see FIGS. 2 to 5) for allowing noise to pass through to block the respective sound absorbing materials. The opposite side of 4. Further, a plurality of weight protrusions 34 may be disposed on the other side of each of the sound absorbing material fixing bases 3, and the cover plate 5 is positioned by the engaging portion 35.

When the transformer 1 is in actual operation, as shown in the first, second and third figures, the damper plate 2, the sound absorbing material holder 3 and the sound absorbing material 4 of the low noise device are arranged around the outer circumference of the casing 11 provided on the transformer 1. Between the reinforcing convex frames 12 and 14, a sealed space 13 is formed between the inner circumference of the damper vibration plate 2 and the outer circumference of the casing 11, and the plurality of sound absorbing material fixing bases 3 are arranged along the inner circumferential direction of the damper vibration plate 2, A sound absorbing material 4 is disposed inside each of the sound absorbing material fixing bases 3 so as to be spaced apart from the outer periphery of the casing 11 of the transformer 1. As shown in the drawing, each of the sound absorbing material fixing bases 3 and the internal cross-aligning partitions 32 themselves are preset in nature. The frequency is to avoid the resonance frequency of the transformer 1, and then to fill the relative shape of the sound absorbing material 4 to absorb the noise transmitted by the transformer 1 through the casing 11, and at the same time, the damper plate 2 can be adapted to the casing 11 of the transformer 1 and The vibration of the reinforcing convex frames 12, 14 is such that the respective plates 21 are buffered by the deformation of both ends and both sides, and the weight bumps 34 of the respective sound absorbing material fixing seats 3 can increase the mass to resist the vibration by the inertia. It can be seen that the low noise device of the present invention uses the damper plate 2 to be fixed with the sound absorbing material. The design of the seat 3 and its sound absorbing material 4 can jointly reduce the resonance noise transmitted by the transformer 11 from the casing 11, avoid interference with the surrounding environment and personnel, and facilitate the fabrication and assembly installation, thereby reducing the cost.

The above embodiments are only used to facilitate the description of the present invention, and are not intended to be limiting, and all kinds of simple changes and modifications that can be made by those skilled in the art without departing from the spirit of the present invention should still be included in the following patent applications. In the scope.

2‧‧‧damper plate

21‧‧‧ plates

23‧‧‧ side edge

25‧‧‧ side edge

3‧‧‧Acoustic material holder

31‧‧‧ side panels

32‧‧‧Baffle

34‧‧‧weight bumps

35‧‧‧Cards

4‧‧‧ Sound absorbing materials

5‧‧‧ Cover

Claims (9)

A transformer low-noise device is disposed between two opposite reinforcing convex frames on the outer side of the casing of the transformer; the low-noise device comprises a damper vibration plate disposed apart from the outer side of the casing, and the opposite edges of the transformer are respectively connected to the relative reinforcing a convex frame for forming a sealed space between the inner side of the damper vibration plate and the outer side of the casing; a sound absorbing material fixing seat is disposed along the inner side of the damper vibration plate, and one side of the sound absorbing material fixing seat is fixed to the inner side of the damper vibration plate, The other side is spaced apart from the outer side of the casing, and the sound absorbing material fixing seat is provided with a sound absorbing material inside, so that the sound absorbing material is spaced apart from the outer side of the casing of the transformer. The transformer low noise device according to claim 1, wherein the damper plate, the sound absorbing material fixing seat, the sound absorbing material and the two opposite reinforcing convex frames are laterally disposed around the outer periphery of the casing, and the sound absorbing material fixing seat is provided at both ends. The opposite reinforcing convex frames are spaced apart from each other. The transformer low noise device according to claim 1, wherein the damping vibration plate has a thickness of less than 3 mm. The transformer low noise device according to claim 3, wherein the damping vibration plate is provided with a resin damping layer on the inner side and the outer side. The transformer low-noise device according to the second or third aspect of the invention, wherein the damper vibrating plate is formed by sequentially connecting a plurality of rectangular plates, and a rectangular sound absorbing material fixing seat is disposed on each of the plurality of plates, each plate The upper and lower opposite end edges and the opposite side edges are respectively disposed beyond the outer periphery of the sound absorbing material fixing seat. The low-noise device of the transformer of claim 5, wherein each of the plates of the damper plate is set as a vibration-damping metal plate, and the upper and lower opposite edges of each plate are respectively welded to the opposite reinforcing convex frame, and each The two sides of the plate are welded in sequence. The transformer low noise device according to claim 5, wherein the plurality of sound absorbing material fixing seats are internally provided with a plurality of partitions at opposite sides thereof to be divided into a plurality of accommodating spaces for respectively providing sound absorbing materials of opposite shapes. The transformer low noise device according to claim 7, wherein the other side of the plurality of sound absorbing material fixing seats is provided with a cover plate for allowing noise to pass through to block the positioning of the sound absorbing materials. The transformer low noise device according to claim 7, wherein the other side of the plurality of sound absorbing material fixing seats are provided with a plurality of weighted bumps.