CN219575336U

CN219575336U - High-heat-dissipation dry-type transformer

Info

Publication number: CN219575336U
Application number: CN202320600953.6U
Authority: CN
Inventors: 郑晓品; 屠凯鹏
Original assignee: Zhejiang Qiaobang Power Technology Co ltd
Current assignee: Zhejiang Qiaobang Power Technology Co ltd
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-08-22
Anticipated expiration: 2033-03-20

Abstract

The utility model relates to a high-heat-dissipation dry-type transformer, which relates to the technical field of transformers and comprises a transformer body, wherein a heat-dissipation box body and a heat-dissipation box cover are arranged on the outer side surface of the transformer body, an installation cavity for the transformer body to be placed in is arranged on the upper side of the heat-dissipation box body, an air inlet and an air outlet are respectively formed in two opposite sides of the heat-dissipation box body, a filter plate is arranged on the outer side surface of the air inlet, and an exhaust fan is arranged on the inner edge of the air outlet; according to the utility model, through the arrangement of the exhaust fan and the filter plate, when the transformer body works, air with higher temperature in the heat dissipation box body is extracted through the exhaust fan, and air with lower temperature outside is introduced from the air inlet, so that circulation of air is formed, the overall temperature of the transformer body is reduced, and the heat dissipation performance of the transformer body is improved; meanwhile, through the arrangement of the filter plates, external small insects or small animals are prevented from entering the heat dissipation box body from the air inlet, and the protection performance of the heat dissipation box body is improved.

Description

High-heat-dissipation dry-type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a high-heat-dissipation dry-type transformer.

Background

The dry type transformer is a transformer with an iron core box winding not immersed in insulating oil, and is commonly used in environments such as high-rise buildings, airports, wharf CNC mechanical equipment and the like. The dry-type transformer has the advantages of strong short-circuit resistance, small maintenance workload, high operation efficiency, small volume, low noise and the like, and is commonly used in places with high performance requirements such as fire prevention, explosion prevention and the like.

In the related art, the dry type transformer mainly comprises an iron core formed by silicon steel sheets and coils cast by epoxy resin, an insulating cylinder is arranged between the high-voltage coils and the low-voltage coils to increase electrical insulation, the coils are supported and restrained by cushion blocks, and all fasteners for overlapping parts of the dry type transformer have anti-loosening performance.

Because the overall structure of the dry-type transformer is more precise, the temperature during use has strict control requirements, but because the components and parts inside the transformer body are assembled tightly, the efficiency of radiating the heat generated by the dry-type transformer to the outside is lower, the whole dry-type transformer can be overheated, and then faults are generated to stop working due to the overhigh overall temperature.

Disclosure of Invention

The utility model aims to provide a high-heat-dissipation dry-type transformer, which solves the problems that the dry-type transformer in the related art has poor heat dissipation performance, so that the whole temperature is increased and the dry-type transformer possibly fails.

The utility model provides a high-heat-dissipation dry-type transformer which adopts the following technical scheme:

the utility model provides a high heat dissipation dry-type transformer, includes the transformer body, the lateral surface of transformer body is equipped with heat dissipation box and heat dissipation case lid, the upside of heat dissipation box is provided with the installation cavity that supplies the transformer body to put into, air inlet and gas vent have been seted up respectively to the both sides that the heat dissipation box is relative, the filter is installed to the lateral surface of air inlet, the air exhauster is installed to the interior border of gas vent.

By adopting the technical scheme, when the transformer body works, the air with higher temperature inside the heat dissipation box body is pumped out through the exhaust fan, and meanwhile, the air with lower temperature outside enters from the air inlet, so that circulation of the air is formed, the overall temperature of the transformer body is reduced, and the heat dissipation performance of the transformer body is improved; meanwhile, through the arrangement of the filter plates, external small insects or small animals are prevented from entering the heat dissipation box body from the air inlet, and the protection performance of the heat dissipation box body is improved.

Optionally, the lateral surface of radiating box is provided with the limiting plate, set up on the limiting plate and supply the filter to insert and gliding spacing groove, the lateral surface of filter is equipped with realizes limiting plate and filter joint complex joint spare.

Through adopting above-mentioned technical scheme, in the equipment in-process of filter, through the setting of limiting plate and joint spare, insert the limiting groove inside with the filter along the length direction of limiting groove to realize through the joint spare that limiting plate and filter are both joint is fixed, when the needs clear up the filter, be convenient for take out the filter from the limiting groove inside clean.

Optionally, the joint spare includes pressure spring and arc lug, set up the standing groove that supplies pressure spring and arc lug to put into on the side that the filter is close to the spacing groove, set up the arc recess that supplies arc lug male on the inner wall of spacing groove.

Through adopting above-mentioned technical scheme, in the installation of filter and limiting plate, through the setting of pressure spring and arc lug, compression state's pressure spring extrusion arc lug makes it insert inside the arc recess that corresponds to this realizes the joint cooperation of filter and limiting plate, reduces the filter and appears not hard up or the possibility of shifting in the spacing inslot, improves the installation stability of filter at the spacing inslot portion.

Optionally, the lateral surface of heat dissipation box is equipped with the first weather shield that is located the filter upside.

Through adopting above-mentioned technical scheme, when raining, through the setting of first weather shield, the rainwater is through filter and air inlet entering into the possibility of heat dissipation box when raining, improves the waterproof performance of heat dissipation box.

Optionally, a second rain shield with an upward opening is arranged on the inner side wall, close to the filter plate, of the heat dissipation box body.

Through adopting above-mentioned technical scheme, be equipped with the ascending second weather shield of opening on the radiating box inside wall, when the rainwater is great, even there is a small amount of rainwater to enter into radiating box inside through the air inlet, also can shelter from by the second weather shield, and then refluence to the lateral surface of radiating box, further improves the waterproof performance of radiating box.

Optionally, the upper edge of the second weather shield is not lower than the lower edge of the first weather shield.

By adopting the technical scheme, as the upper side edge of the second rain baffle is not lower than the bottom side edge of the first rain baffle, the possibility that rainwater enters into the radiating box body from the air inlet is further reduced.

Optionally, filter cotton is installed on the inner wall of the heat dissipation box body, which is close to the filter plate.

Through adopting above-mentioned technical scheme, when strong wind weather, through the setting of filter pulp, avoid the dust or the steam of air to enter into the inside of heat dissipation box through the air inlet, further improve its waterproof dustproof performance.

Optionally, a protruding portion inserted into the air inlet is arranged on one side of the filter cotton, a plurality of positioning blocks are arranged on the filter cotton, and positioning grooves for embedding the positioning blocks are formed in the inner wall of the heat dissipation box body.

Through adopting above-mentioned technical scheme, at the assembly process of filter cotton, insert the air inlet inside with the bulge, then with the locating piece embedding on the filter cotton inside the constant head tank to this equipment that realizes the filter cotton reduces the filter cotton and dispels the heat the possibility of box inner wall natural separation, improves the stability of the equipment of filter cotton and heat dissipation box inner wall.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. through the arrangement of the exhaust fan and the filter plate, when the transformer body works, air with higher temperature inside the heat dissipation box body is pumped out through the exhaust fan, and meanwhile, air with lower temperature outside enters from the air inlet, so that circulation of air is formed, the overall temperature of the transformer body is reduced, and the heat dissipation performance of the transformer body is improved; meanwhile, through the arrangement of the filter plates, external small insects or small animals are prevented from entering the heat dissipation box body from the air inlet, and the protection performance of the heat dissipation box body is improved.

2. Through setting up of limiting plate and joint spare, insert the inside in-process of limiting groove along the length direction of limiting groove, compression state's pressure spring extrusion arc lug makes it insert inside the arc recess that corresponds, realizes that the joint of limiting plate and filter two is fixed, when needs clear up the filter, is convenient for take out the filter from the limiting groove inside and cleans.

3. Through the setting of filter cotton, install the filter cotton on the inner wall that the heat dissipation box is close to the filter, when strong wind weather to this prevents that the dust or the steam of air from entering into the inside of heat dissipation box through the air inlet, further improves its waterproof dustproof performance.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a radiator cover according to an embodiment of the present utility model when the radiator cover is opened;

FIG. 3 is a schematic cross-sectional view of a filter plate and filter cotton embodying an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a filter plate in combination with a clip according to an embodiment of the utility model;

fig. 5 is an enlarged schematic view of the portion a in fig. 4.

In the figure, 1, a transformer body; 2. a heat-dissipating box; 21. a mounting cavity; 22. an air inlet; 23. an exhaust port; 24. a limiting plate; 241. a limit groove; 242. an arc-shaped groove; 25. a first weather shield; 26. a second weather shield; 27. a positioning groove; 28. a fixing plate; 281. a waist-shaped hole; 3. a heat dissipating box cover; 4. an exhaust fan; 5. a filter plate; 51. a filter screen; 52. a clamping piece; 521. a pressure spring; 522. arc-shaped protruding blocks; 53. a placement groove; 6. filtering cotton; 61. a protruding portion; 62. and (5) positioning blocks.

Detailed Description

The present utility model will be described in further detail below with reference to the accompanying drawings.

Examples:

referring to fig. 1 and 2, a dry-type transformer with high heat dissipation performance comprises a transformer body 1, wherein a heat dissipation box cover 3 and a heat dissipation box body 2 are arranged on the outer side surface of the transformer body 1, the heat dissipation box cover 3 is hinged with one side of the upper side edge of the heat dissipation box body 2, and a mounting cavity 21 for placing the transformer body 1 is formed in the heat dissipation box body 2.

Referring to fig. 3, two opposite sides of the heat dissipation box 2 are respectively provided with a square air inlet 22 and a circular air outlet 23, the inner edge of the air outlet 23 is provided with an exhaust fan 4, air with higher temperature inside the heat dissipation box 2 is pumped out through the exhaust fan 4, and air with lower external temperature enters from the air inlet 22, so that circulation of air is formed, the overall temperature of the transformer body 1 is reduced, and the heat dissipation performance of the transformer body 1 is improved.

Referring to fig. 3 and 4, the outer side surface of the air inlet 22 is provided with a filter plate 5, a filter screen 51 is mounted in the middle of the filter plate 5, external small insects or animals are prevented from entering the heat dissipation box 2 through the filter plate 5, two limiting plates 24 are fixedly arranged on the outer side surface of the heat dissipation box 2 along the height direction, and limiting grooves 241 for the filter plate 5 to insert and slide are formed in opposite side surfaces of the two limiting plates 24.

Referring to fig. 4 and 5, a clamping piece 52 for realizing the clamping fit of the limiting plate 24 and the filter plate 5 is arranged on the outer side surface of the filter plate 5, wherein the clamping piece 52 comprises four groups of pressure springs 521 and corresponding arc-shaped protruding blocks 522, two placing grooves 53 for placing the pressure springs 521 and the arc-shaped protruding blocks 522 are respectively arranged on the two side surfaces of the filter plate 5, which are close to the limiting groove 241, and an arc-shaped groove 242 for inserting the arc-shaped protruding blocks 522 is arranged on the inner wall of the limiting groove 241; after the filter plate 5 is inserted into the limiting groove 241, the compressed pressure spring 521 extrudes the arc-shaped protruding block 522 to enable the arc-shaped protruding block 522 to be inserted into the corresponding arc-shaped groove 242, so that the clamping fit of the filter plate 5 and the limiting plate 24 is realized, and when the filter plate 5 needs to be cleaned, the filter plate 5 is conveniently taken out from the inside of the limiting groove 241 to be cleaned.

Referring to fig. 3, the outer side surface of the heat dissipation box 2 is fixedly provided with a first rain shield 25 which is positioned on the upper side of the filter plate 5 and is downward in opening, so that the possibility that rainwater enters the heat dissipation box 2 through the filter plate 5 and the air inlet 22 in rainy days is reduced; the second rain shield 26 with an upward opening is fixedly arranged on the inner side wall of the heat dissipation box body 2, which is close to the filter plate 5, and through the arrangement of the second rain shield 26, even a small amount of rainwater enters the heat dissipation box body 2 through the air inlet 22, the rainwater can be blocked by the second rain shield 26, so that the waterproof performance of the heat dissipation box is further improved. The upper edge of the second weather shield 26 is not lower than the lower edge of the first weather shield 25, further reducing the possibility of rainwater entering the inside of the radiator tank 2 from the air inlet 22, and ensuring the waterproof performance of the radiator tank 2 even in heavy rain.

Referring to fig. 3, a filter cotton 6 is installed on the inner wall of the heat radiation box 2 near the filter plate 5, and moisture of air is prevented from entering the inside of the heat radiation box 2 through the air inlet 22 by the filter cotton 6; the filter cotton 6 is provided with the protruding part 61 inserted into the air inlet 22 on one side, wherein the material of the protruding part 61 is the same as that of the filter cotton 6, and four positioning blocks 62 are arranged on the side surface of the filter cotton 6 close to the inner wall of the heat dissipation box 2, and the inner wall of the heat dissipation box 2 is provided with the positioning groove 27 for the positioning blocks 62 to be embedded, so that the assembly of the filter cotton 6 is realized, the possibility of natural separation of the filter cotton 6 and the inner wall of the heat dissipation box 2 is reduced, and the assembly stability of the filter cotton 6 and the inner wall of the heat dissipation box 2 is improved.

Referring to fig. 2, fixing plates 28 are fixedly connected to opposite edges of the bottom side of the heat dissipation case 2, and waist-shaped holes 281 are formed in the fixing plates 28, so that workers can fix the heat dissipation case 2 to a to-be-mounted surface through bolts.

The implementation principle of the embodiment of the utility model is as follows:

in the working process of the transformer body 1, the exhaust fan 4 is started simultaneously, the air with higher temperature inside the heat dissipation box body 2 is pumped out through the exhaust fan 4, and meanwhile, the air with lower external temperature sequentially passes through the filter plate 5, the air inlet 22 and the filter cotton 6 and enters into the heat dissipation box body 2, so that the circulation of air inside and outside the heat dissipation box body 2 is formed, and the overall temperature of the transformer body 1 in the working process is reduced. Therefore, circulation of air is formed, the overall temperature of the transformer body 1 is reduced, and the heat dissipation performance of the transformer body 1 is improved.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a high thermal diffusivity dry-type transformer, includes transformer body (1), its characterized in that, the lateral surface of transformer body (1) is equipped with heat dissipation box (2) and heat dissipation case lid (3), the upside of heat dissipation box (2) is provided with installation cavity (21) that supply transformer body (1) to put into, air inlet (22) and gas vent (23) have been seted up respectively to the both sides that heat dissipation box (2) are relative, filter (5) are installed to the lateral surface of air inlet (22), air exhauster (4) are installed at the interior border of gas vent (23).

2. The high-heat-dissipation dry-type transformer according to claim 1, wherein a limiting plate (24) is arranged on the outer side face of the heat dissipation box body (2), a limiting groove (241) for inserting and sliding the filter plate (5) is formed in the limiting plate (24), and a clamping piece (52) for realizing clamping fit of the limiting plate (24) and the filter plate (5) is arranged on the outer side face of the filter plate (5).

3. The high-heat-dissipation dry-type transformer according to claim 2, wherein the clamping piece (52) comprises a pressure spring (521) and an arc-shaped protruding block (522), a placing groove (53) for placing the pressure spring (521) and the arc-shaped protruding block (522) is formed in the side surface, close to the limiting groove (241), of the filter plate (5), and an arc-shaped groove (242) for inserting the arc-shaped protruding block (522) is formed in the inner wall of the limiting groove (241).

4. A high heat dissipating dry transformer according to claim 1, wherein the outer side of the heat dissipating case (2) is provided with a first weather shield (25) located on the upper side of the filter plate (5).

5. The high-heat-dissipation dry-type transformer according to claim 4, wherein a second rain shield (26) with an upward opening is arranged on the inner side wall of the heat dissipation box body (2) close to the filter plate (5).

6. A high heat dissipating dry transformer according to claim 5, wherein the upper edge of the second weather shield (26) is not lower than the lower edge of the first weather shield (25).

7. The high-heat-dissipation dry-type transformer according to claim 1, wherein the inner wall of the heat dissipation box body (2) close to the filter plate (5) is provided with filter cotton (6).

8. The high-heat-dissipation dry-type transformer according to claim 7, wherein a protruding portion (61) inserted into the air inlet (22) is arranged on one side of the filter cotton (6), a plurality of positioning blocks (62) are arranged on the filter cotton (6), and positioning grooves (27) for embedding the positioning blocks (62) are arranged on the inner wall of the heat dissipation box body (2).