Low-noise dry-type transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a low-noise dry-type transformer which comprises a transformer shell, a dry-type transformer body is fixedly arranged at the center of the inner bottom face of the transformer shell, and an extension plate is fixedly arranged at an air inlet in one side of the transformer shell. A first dustproof net is fixedly arranged at the end, away from the transformer shell, of the extension plate, and a breathable mute cotton plate is fixedly arranged in the side, close to the transformer shell, of the extension plate. Inner threaded pipes are arranged on the two sides of the center of the upper end of the interior of the transformer shell correspondingly, the opposite ends of the two inner threaded pipes are sleeved with silencing columns in a threaded mode correspondingly, and second dustproof nets are fixedly arranged at the ends, close to the inner sides, of the two inner threaded pipes correspondingly. And heat dissipation fans are fixedly arranged at the centers of the interiors of the two internal threaded pipes through a plurality of connecting rods. According to the utility model, the device has multiple mute effects, does not produce large noise while dissipating heat, and is more environment-friendly to use.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a low-noise dry-type transformer. Background Art

[0002] A dry-type transformer is a transformer that does not use liquid insulating agents, but uses solid insulating materials to isolate and cool electrical components. Compared with traditional liquid insulating agents such as oil for insulation and heat dissipation, dry-type transformers use air or solid insulating materials to achieve the same function. The insulation and heat dissipation mechanism of dry-type transformers uses solid materials instead of traditional liquid insulating agents. The insulating material is usually a material with good insulation properties such as dry cardboard, epoxy resin or polyester film. At the same time, dry-type transformers use natural cooling or fan cooling systems to dissipate heat instead of cooling through oil circulation or coolers. Dry-type transformers have some advantages over oil-immersed transformers. First, since no liquid insulating agent is used, dry-type transformers are safer and will not cause safety hazards due to problems such as liquid leakage or fire explosion. Secondly, dry-type transformers are more environmentally friendly, will not pollute the environment, and are easier to recycle and dispose of. In addition, dry-type transformers are also simpler in operation and maintenance.

[0003] However, the existing dry-type transformers often make some noise when in operation. In addition, if the heat is dissipated by a fan, the noise will be even louder, so that the noise of the dry-type transformer in operation affects the outside world. Therefore, those skilled in the art provide a low-noise dry-type transformer to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a low-noise dry-type transformer. The device has multiple quieting effects and will not produce loud noise while dissipating heat, making it more environmentally friendly to use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-noise dry-type transformer, comprising a transformer shell, a dry-type transformer body is fixedly arranged at the center of the inner bottom surface of the transformer shell, an extension plate is fixedly arranged at an air inlet on one side of the transformer shell, a No. 1 dustproof net is fixedly arranged at one end of the extension plate away from the transformer shell, and a breathable and silent cotton plate is fixedly arranged inside the extension plate close to the transformer shell;

[0007] Internally threaded tubes are provided on both sides of the center of the upper end of the transformer housing, and silencer columns are threadedly sleeved on opposite ends of the two internally threaded tubes, and a No. 2 dust screen is fixedly provided on the inner ends of the two internally threaded tubes, and a heat dissipation fan is fixedly provided at the center of the two internally threaded tubes through a plurality of connecting rods;

[0008] The transformer housing comprises a sound insulation layer, both outer sides of the sound insulation layer are provided with aluminum alloy layers, both outer sides of the two aluminum alloy layers are provided with sound absorption layers, and both outer sides of the two sound absorption layers are provided with fire retardant layers;

[0009] Through the above technical solution, the device has multiple silent functions, and will not produce loud noise while dissipating heat, making it more environmentally friendly to use.

[0010] Furthermore, a plurality of silencer holes are provided on the surface of the silencer column, and the silencer column is arranged in a cylindrical shape, with a smaller diameter at one end and a larger diameter at the other end;

[0011] Through the above technical solution, a plurality of partitions and linings are arranged inside the silencer column, and the partitions and linings are both made of sound-absorbing cotton material.

[0012] Furthermore, the dry-type transformer body is composed of an iron core, a winding, an insulating material and a terminal block;

[0013] Through the above technical solution, it is the main working original.

[0014] Further, the sound insulation layer is made of sound insulation foam material;

[0015] Through the above technical scheme, a material for sound absorption and sound insulation is generally made of polyurethane or polyester foam material. Its surface generally has a porous structure that can absorb and dissipate sound wave energy, thereby reducing the propagation and reflection of noise.

[0016] Further, the sound absorbing layer is made of surface density board material;

[0017] Through the above technical solution, the surface density board can provide sound absorption effect to a certain extent. The sound absorption effect of the surface density board mainly depends on the shape and texture of its surface, as well as the density of the board itself. The surface density board usually has a smooth and uniform density surface, which makes it better for absorbing high-frequency sound waves.

[0018] Furthermore, the fire retardant layer is made of silicate coating;

[0019] Through the above technical solution, a healthy and environmentally friendly coating is obtained, which is mainly composed of silicate, potassium silicate inorganic substances and water components. Silicate coating has good air permeability, durability and fire resistance, and can effectively prevent the wall from mold, cracking and falling off, achieving the dual effects of beautiful decoration and environmental protection.

[0020] The utility model has the following beneficial effects:

[0021] The utility model proposes a low-noise dry-type transformer. The transformer shell of the dry-type transformer provided by the utility model has certain sound insulation and sound absorption functions. In the process, the air inlet end is silenced by a breathable silent cotton board, and the air outlet end can achieve heat dissipation and exhaust through an internal threaded pipe. The dry-type transformer body and the heat dissipation fan are both located inside the transformer shell. The sound at the air outlet end of the internal threaded pipe can be exhausted and silenced through a silencer column. The whole device will not make a loud noise when used, and is quieter and more environmentally friendly to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the shaft side of a low-noise dry-type transformer proposed by the utility model;

[0023] Figure 2 It is a side cross-sectional schematic diagram of the transformer housing of the utility model;

[0024] Figure 3 It is a front cross-sectional schematic diagram of the utility model;

[0025] Figure 4 This is a schematic diagram of the transformer casing structure of the utility model.

[0026] Legend:

[0027] 1. Transformer casing; 2. Silencer column; 3. Extension plate; 4. No. 1 dust screen; 5. Dry-type transformer body; 6. Breathable and silent cotton board; 7. Internally threaded pipe; 8. No. 2 dust screen; 9. Connecting rod; 10. Cooling fan; 101. Sound insulation layer; 102. Aluminum alloy layer; 103. Sound absorption layer; 104. Fire retardant layer. DETAILED DESCRIPTION

[0028] 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.

[0029] Example

[0030] Reference Figure 1-4 The utility model provides an embodiment: a low-noise dry-type transformer, comprising a transformer housing 1, a dry-type transformer body 5 is fixedly arranged at the center of the inner bottom surface of the transformer housing 1, an extension plate 3 is fixedly arranged at the air inlet on one side of the transformer housing 1, a No. 1 dustproof net 4 is fixedly arranged at the end of the extension plate 3 away from the transformer housing 1, and a breathable and silent cotton board 6 is fixedly arranged inside the extension plate 3 close to the transformer housing 1. The breathable and silent cotton board 6 is made of a highly breathable polyester fiber cotton board material, which will not affect the air intake while absorbing sound;

[0031] Internally threaded tubes 7 are provided on both sides of the center of the upper end of the transformer housing 1. The opposite ends of the two internally threaded tubes 7 are threadedly sleeved with silencer columns 2. The silencer columns 2 are installed by means of threads, which is very convenient for disassembly. The inner ends of the two internally threaded tubes 7 are fixedly provided with No. 2 dust screens 8. The centers of the two internally threaded tubes 7 are fixedly provided with heat dissipation fans 10 through multiple connecting rods 9;

[0032] The transformer housing 1 includes a sound insulation layer 101, aluminum alloy layers 102 are arranged on both outer sides of the sound insulation layer 101, sound absorption layers 103 are arranged on the outer sides of the two aluminum alloy layers 102, and fire retardant layers 104 are arranged on the outer sides of the two sound absorption layers 103. The device has multiple silent functions, and will not produce large noise while dissipating heat, and is more environmentally friendly to use.

[0033] The surface of the muffler column 2 is provided with a plurality of muffler holes. The muffler column 2 is set to a cylindrical shape, and one end has a smaller diameter and the other end has a larger diameter. The muffler column 2 is provided with a plurality of partitions and liners, and the partitions and liners are made of sound-absorbing cotton materials. The dry-type transformer body 5 is composed of an iron core, a winding, an insulating material and a terminal block, and is the main working element. The sound insulation layer 101 is made of a sound insulation foam material, which is a material for sound absorption and sound insulation, and is usually made of polyurethane or polyester foam material. Its surface usually has a porous structure, which can absorb and dissipate sound wave energy, thereby reducing the propagation and reflection of noise. The sound absorption layer 103 is made of a surface density board material, and the surface density board can provide a sound absorption effect to a certain extent. The sound absorption effect of the surface density board is mainly due to the shape and texture of its surface, as well as the density of the board itself. The surface density board usually has a smooth and uniformly dense surface, which makes it better for absorbing high-frequency sound waves. The fire retardant layer 104 is made of a silicate coating, which is a healthy and environmentally friendly coating, mainly composed of silicate, potassium silicate inorganic substances and water components. Silicate paint has excellent air permeability, durability and fire resistance, and can effectively prevent the wall from mold, cracking and falling off, achieving the dual effects of beautiful decoration and environmental protection.

[0034] Working principle: When working, the dry-type transformer body 5 will make a certain sound, and the heat dissipation fan 10 will also make a certain sound. The sound will be isolated by the transformer casing 1, and the external gas will enter through the breathable silent cotton board 6 and flow out of the silencer column 2. The sound will also be silenced by the silencer column 2. In multiple silencing situations, the sound of the equipment working is shielded, and will not cause sound pollution to the outside world, making it more green and environmentally friendly to use.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can 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 should be included in the protection scope of the present invention.

Claims

1. A low-noise dry-type transformer, comprising a transformer housing (1), characterized in that: A dry-type transformer body (5) is fixedly arranged at the center of the inner bottom surface of the transformer housing (1); an extension plate (3) is fixedly arranged at the air inlet on one side of the transformer housing (1); a No. 1 dust screen (4) is fixedly arranged at one end of the extension plate (3) away from the transformer housing (1); and a breathable and silent cotton plate (6) is fixedly arranged inside the extension plate (3) on a side close to the transformer housing (1); Internally threaded tubes (7) are provided on both sides of the center of the upper end of the transformer housing (1); silencer columns (2) are threadedly sleeved on opposite ends of the two internally threaded tubes (7); a second dust screen (8) is fixedly provided on the inner ends of the two internally threaded tubes (7); and a heat dissipation fan (10) is fixedly provided at the center of the two internally threaded tubes (7) via a plurality of connecting rods (9); The transformer housing (1) comprises a sound insulation layer (101), aluminum alloy layers (102) are provided on both outer sides of the sound insulation layer (101), sound absorption layers (103) are provided on the outer sides of the two aluminum alloy layers (102), and fire retardant layers (104) are provided on the outer sides of the two sound absorption layers (103).

2. A low-noise dry-type transformer according to claim 1, characterized in that: A plurality of silencer holes are provided on the surface of the silencer column (2); the silencer column (2) is arranged in a cylindrical shape, with one end having a smaller diameter and the other end having a larger diameter.

3. A low-noise dry-type transformer according to claim 1, characterized in that: The dry-type transformer body (5) is composed of an iron core, a winding, an insulating material and a connection terminal.

4. A low-noise dry-type transformer according to claim 1, characterized in that: The sound insulation layer (101) is made of sound insulation foam material.

5. A low noise dry-type transformer according to claim 1, characterized in that: The sound absorbing layer (103) is made of surface density board material.

6. A low noise dry-type transformer according to claim 1, characterized in that: The fireproof and flame-retardant layer (104) is made of silicate paint.

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