Noise reduction equipment for oil-immersed power transformer

Abstract

The utility model discloses noise reduction equipment for an oil-immersed power transformer, which is characterized in that an oil-immersed power transformer body is positioned on the inner side of a protective sound-proof cover, the protective sound-proof cover comprises an inner cover body, and a sound-proof layer, a first sound-absorbing layer and an outer cover body are sequentially adhered and fixed on the outer side of the inner cover body; the sound insulation layer comprises a sound insulation damping felt and a plurality of hollow sound absorption balls wrapped in the sound insulation damping felt, the first sound absorption layer comprises a damping layer, a wood board layer and a sound absorption sponge layer which are sequentially laminated, adhered and fixed from inside to outside, a heat dissipation cylinder is arranged on the rear side of the protective sound insulation cover, and the inner side of the heat dissipation cylinder is sequentially wrapped with a second sound absorption layer and a noise reduction pore plate. According to the noise reduction equipment for the oil-immersed power transformer, in order to solve the problem that noise generated in the operation process of an existing oil-immersed transformer greatly influences the outside, an oil-immersed power transformer body is placed on the inner side of a protective sound-proof cover, and the protective sound-proof cover comprises an inner cover body; a sound insulation layer, a first sound absorption layer and an outer cover body are sequentially adhered and fixed to the outer side of the inner cover body.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an oil-immersed power transformer noise reduction device. Background Art

[0002] Power transformers are necessary equipment for power transmission and distribution. Power transformers can be selected as oil-immersed transformers or dry-type transformers due to different application environments. Oil-immersed transformers are mainly installed on outdoor poles. The body (windings and cores) of the oil-immersed transformer are installed in an oil tank filled with transformer oil. The oil tank is welded with steel plates. The oil-immersed power transformer is a special type of transformer. Its structure includes an oil tank, a cover on the top of the oil tank, a terminal on the cover, an iron core in the oil tank, and a winding on the core. The oil tank contains oil. When the oil-immersed power transformer is in operation, the windings and the core The heat is first transferred to the oil, and the coils and windings are cooled by using the oil as a cooling medium. The application range of oil-immersed transformers is very wide. They can be used indoors or outdoors. Oil-immersed transformers will generate noise during operation. The noise generated by the transformer will not only cause environmental pollution, interfere with and affect people's lives, work and study, but also endanger human health, such as causing hearing loss, headaches, nightmares, memory loss, and affecting children's intellectual development. Therefore, an oil-immersed power transformer noise reduction device is proposed to reduce the impact of the noise generated by the oil-immersed transformer on the outside world. Utility Model Content

[0003] The utility model aims to provide a noise reduction device for an oil-immersed power transformer, so as to solve the problem that the noise generated during the operation of the existing oil-immersed transformer has a great impact on the outside world as mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil-immersed power transformer noise reduction device, comprising an oil-immersed power transformer body, the oil-immersed power transformer body being located inside a protective soundproof cover, the protective soundproof cover comprising an inner cover body, and a sound insulation layer, a first sound absorption layer and an outer cover body being sequentially bonded and fixed to the outside of the inner cover body, the sound insulation layer comprising a sound insulation damping felt and a plurality of hollow sound-absorbing balls wrapped in the sound insulation damping felt, the first sound absorption layer comprising a damping layer, a wooden board layer and a sound absorption sponge layer which are sequentially laminated and bonded from the inside to the outside, a heat dissipation tube being arranged on the rear side of the protective soundproof cover, and a second sound absorption layer and a noise reduction orifice plate being sequentially covered on the inside of the heat dissipation tube.

[0005] Preferably, a protective door is provided on one side of the protective soundproof cover, and a sound insulation layer and a first sound absorbing layer are also provided inside the protective door.

[0006] Through the technical solution, it is convenient to close the protective sound insulation cover.

[0007] Preferably, the protective soundproof cover is provided with a connection hole for use with the oil-immersed power transformer body.

[0008] Through the above technical solution: it is convenient to connect the oil-immersed power transformer body.

[0009] Preferably, a heat dissipation fan is installed inside the heat dissipation tube, and the heat dissipation fan is connected to the inner wall of the heat dissipation tube through a connecting rod.

[0010] Through the above technical solution, it is convenient to dissipate heat from the oil-immersed power transformer body.

[0011] Preferably, a noise reduction protection mesh cover is provided inside the air inlet of the heat dissipation cylinder, and the noise reduction protection mesh cover is made of foam metal sound-absorbing material.

[0012] Through the above technical solution: the noise generated by the heat sink is reduced.

[0013] Preferably, the second sound-absorbing layer can be made of sound-absorbing cotton.

[0014] Through the above technical solution: the noise reduction effect is improved.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the noise reduction device for the oil-immersed power transformer solves the problem that the noise generated during the operation of the existing oil-immersed transformer has a greater impact on the outside world. The oil-immersed power transformer body is placed inside the protective soundproof cover, the protective soundproof cover includes an inner cover body, and the outer side of the inner cover body is adhered and fixed with a sound insulation layer, a first sound absorption layer and an outer cover body in sequence. The sound insulation layer can isolate the noise generated by the oil-immersed transformer, and the first sound absorption layer can absorb the noise generated by the oil-immersed transformer, thereby reducing the impact of the noise generated by the oil-immersed transformer on the outside world. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front view cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the positional relationship between the sound insulation layer and the first sound absorbing layer of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first sound-absorbing layer of the utility model;

[0019] Figure 4 This is a schematic diagram of the position relationship of the heat dissipation tube of the utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the heat dissipation tube of the utility model;

[0021] Figure 6 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0022] In the figure: 1. Oil-immersed power transformer body; 2. Protective soundproof cover; 201. Inner cover; 202. Sound insulation layer; 2021. Sound insulation damping felt; 2022. Hollow sound-absorbing ball; 203. First sound-absorbing layer; 2031. Damping layer; 2032. Wooden board layer; 2033. Sound-absorbing sponge layer; 204. Outer cover; 3. Heat sink; 301. Second sound-absorbing layer; 302. Noise reduction perforated plate; 303. Heat dissipation fan; 304. Noise reduction protective mesh cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 The utility model provides a technical solution: an oil-immersed power transformer noise reduction device, according to Figure 1-3 As shown, the oil-immersed power transformer body 1 is located inside the protective soundproof cover 2.

[0025] Specifically, the protective soundproof cover 2 includes an inner cover body 201, and a sound insulation layer 202, a first sound absorption layer 203 and an outer cover body 204 are sequentially bonded and fixed to the outside of the inner cover body 201, the sound insulation layer 202 includes a sound insulation damping felt 2021 and a plurality of hollow sound absorbing balls 2022 wrapped in the sound insulation damping felt 2021, and the first sound absorption layer 203 includes a damping layer 2031, a wooden layer 2032 and a sound absorption sponge layer 2033 which are sequentially laminated and bonded from the inside to the outside.

[0026] In a further embodiment, a protective door is provided on one side of the protective soundproof cover 2, and a sound insulation layer 202 and a first sound absorbing layer 203 are also provided inside the protective door.

[0027] In a further embodiment, the protective soundproof cover 2 is provided with a connection hole for use with the oil-immersed power transformer body 1 .

[0028] In a further embodiment, the noise generated by the oil-immersed power transformer body 1 passes through the sound insulation layer 202, is absorbed and reflected by a plurality of hollow sound-absorbing balls 2022, and the sound is weakened, and the remaining sound passes through the sound insulation damping felt 2021.

[0029] Entering into the first sound absorbing layer 203, the damping layer 2031, the wood layer 2032 and the sound absorbing sponge layer 2033 can further absorb the noise, thereby reducing the impact of the noise on the outside.

[0030] according to Figure 4-6 As shown, a heat dissipation tube 3 is arranged at the rear side of the protective sound insulation cover 2, and the inner side of the heat dissipation tube 3 is covered with a second sound absorbing layer 301 and a noise reduction orifice plate 302 in sequence.

[0031] Specifically, a heat dissipation fan 303 is installed inside the heat dissipation tube 3, and the heat dissipation fan 303 is connected to the inner wall of the heat dissipation tube 3 through a connecting rod.

[0032] Specifically, a noise reduction protection mesh cover 304 is arranged inside the air inlet of the heat dissipation tube 3 .

[0033] In a further embodiment, the noise reduction protection mesh cover 304 is made of foam metal sound absorbing material.

[0034] In a further embodiment, the second sound absorbing layer 301 may be made of sound absorbing cotton.

[0035] When in use, the heat dissipation tube 3 is provided to facilitate the subsequent heat dissipation of the oil-immersed power transformer body 1. The second sound-absorbing layer 301 and the noise reduction orifice plate 302 are sequentially coated on the inner side of the heat dissipation tube 3 to absorb and isolate the noise generated inside the heat dissipation tube 3. At the same time, a noise reduction protective mesh cover 304 is provided inside the air inlet of the heat dissipation tube 3. The noise reduction protective mesh cover 304 prevents impurities such as leaves from entering the heat dissipation tube 3, and can also reduce the turbulence of the gas inside the heat dissipation tube 3, thereby effectively reducing the aerodynamic noise generated by the heat dissipation fan 303 in the heat dissipation tube 3.

[0036] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A noise reduction device for an oil-immersed power transformer, comprising an oil-immersed power transformer body (1), wherein the oil-immersed power transformer body (1) is located inside a protective soundproof cover (2), and is characterized in that: The protective soundproof cover (2) comprises an inner cover body (201), and a soundproof layer (202), a first sound-absorbing layer (203) and an outer cover body (204) are sequentially bonded and fixed to the outer side of the inner cover body (201); the soundproof layer (202) comprises a soundproof damping felt (2021) and a plurality of hollow sound-absorbing balls (2022) wrapped in the soundproof damping felt (2021); the first sound-absorbing layer (203) comprises a damping layer (2031), a wood layer (2032) and a sound-absorbing sponge layer (2033) which are bonded and fixed in layers from the inside to the outside; a heat dissipation tube (3) is arranged at the rear side of the protective soundproof cover (2), and the inner side of the heat dissipation tube (3) is sequentially coated with a second sound-absorbing layer (301) and a noise reduction orifice plate (302).

2. The oil-immersed power transformer noise reduction device according to claim 1, characterized in that: A protective door is provided on one side of the protective soundproof cover (2), and a sound insulation layer (202) and a first sound absorption layer (203) are also provided inside the protective door.

3. The oil-immersed power transformer noise reduction device according to claim 1, characterized in that: The protective soundproof cover (2) is provided with a connection hole for use with the oil-immersed power transformer body (1).

4. The oil-immersed power transformer noise reduction device according to claim 1, characterized in that: A heat dissipation fan (303) is installed inside the heat dissipation cylinder (3), and the heat dissipation fan (303) is connected to the inner wall of the heat dissipation cylinder (3) via a connecting rod.

5. The oil-immersed power transformer noise reduction device according to claim 1, characterized in that: A noise reduction protection mesh cover (304) is arranged inside the air inlet of the heat dissipation cylinder (3), and the noise reduction protection mesh cover (304) is made of foam metal sound-absorbing material.

6. The oil-immersed power transformer noise reduction device according to claim 1, characterized in that: The second sound-absorbing layer (301) can be made of sound-absorbing cotton.

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