CN220252991U

CN220252991U - Air-cooled transformer

Info

Publication number: CN220252991U
Application number: CN202321920678.2U
Authority: CN
Inventors: 聂青军; 聂亚林; 张雅茹
Original assignee: Shijiazhuang Tianya Electric Co ltd
Current assignee: Shijiazhuang Tianya Electric Co ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2023-12-26
Anticipated expiration: 2033-07-20

Abstract

The application relates to the technical field of transformers, in particular to a transformer for radiating heat in an air cooling mode; the application provides an air-cooled transformer, which comprises a base for supporting a foundation, wherein a plurality of coils are uniformly arranged on the upper part of the base along the length direction of the base, iron cores wound by the coils are arranged inside the coils, a bearing component for improving the gap between the base and the coils is additionally arranged between the base and the coils, and a heat dissipation component for improving the air flow rate is arranged on the side part of the bearing component; because the bearing component and the radiating component are designed for the transformer, the radiating capacity of the transformer can be effectively increased by improving the air flow rate, and the problem that the radiating operation of the transformer cannot be successfully completed by only relying on the radiating mode of natural air cooling when the radiating capacity is increased after the power of the transformer is improved due to the fact that the dry type transformer in the prior art mainly adopts the air cooling radiating mode of natural air convection is solved.

Description

Air-cooled transformer

Technical Field

The application relates to the technical field of transformers, in particular to a transformer for radiating heat in an air cooling mode.

Background

The transformer is basic equipment for power transmission and distribution, and is widely applied to the fields of industry, agriculture, traffic, urban communities and the like; the transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core (magnetic core);

in the prior art, a large amount of heat is generated in the using process of the transformer, therefore, the transformer adopts different cooling modes according to different types, the dry type transformer adopts an air cooling heat dissipation mode more commonly, when the temperature of the transformer rises above the temperature of the surrounding air of the transformer, hot air escapes and is replaced by cold air by means of the convection process of natural air, so that the air cooling heat dissipation operation of the dry type transformer is realized, however, when the power of the transformer is more than 3MVA (megavolt amperes), the air cooling heat dissipation mode of natural air convection is adopted, and the heat generated by the transformer cannot be satisfied.

Disclosure of Invention

The problem to be solved by the application is that the existing dry-type transformer mainly adopts an air cooling heat dissipation mode of natural air convection, however, when the heat dissipation capacity is increased after the power of the transformer is improved, the heat dissipation operation of the transformer cannot be successfully completed only by means of the heat dissipation mode of natural air cooling.

For solving above-mentioned technical problem, this application provides an air-cooled transformer, including the base that is used for playing basic supporting role, the upper portion of base evenly is provided with a plurality of coils along its length direction, and the inside of coil has been arranged by its winding iron core, has set up the bearing subassembly that is used for improving the clearance between base and the coil, and the lateral part of bearing subassembly then is provided with the radiator unit that is used for improving the air velocity of flow.

Because the bearing component and the radiating component are designed for the transformer, the radiating capacity of the transformer can be effectively increased by improving the air flow rate, and the problem that the radiating operation of the transformer cannot be successfully completed by only relying on the radiating mode of natural air cooling when the radiating capacity is increased after the power of the transformer is improved due to the fact that the dry type transformer in the prior art mainly adopts the air cooling radiating mode of natural air convection is solved.

Drawings

Fig. 1 is a right side structural schematic diagram of the embodiment.

Fig. 2 is a left side schematic view of the embodiment.

Fig. 3 is a schematic perspective view of a heat dissipating assembly.

Fig. 4 is a schematic side view of a heat dissipating assembly.

Fig. 5 is a schematic diagram of the structure of the coil and the core.

Fig. 6 is a schematic diagram of a hierarchical structure of a coil.

Fig. 7 is a schematic view of a hierarchical structure of the core.

In the figure: 1. a support assembly; 2. a coil; 3. a support plate; 4. a heat dissipation assembly; 5. a base; 6. an iron core; 7. a blower; 8. a bracket; 9. a clamping piece; 10. a support block; 11. a low pressure ring; 12. a high pressure ring; 13. a middle pressing ring; 14. a vent hole; 15. a screw; 16. a ventilation channel.

Description of the embodiments

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Examples

The present application relates to an air-cooled transformer, as shown in fig. 1 to 7, which includes a base 5 for supporting a base, a plurality of coils 2 are uniformly provided at an upper portion of the base 5 along a length direction thereof, iron cores 6 wound around the coils 2 are disposed inside the coils 2, and thus, a supporting member 1 for increasing a gap between the base 5 and the coils 2 is additionally provided between the base 5 and the coils 2 in order to enhance a heat dissipation performance of the transformer, and a heat dissipation member 4 for increasing an air flow rate is provided at a side portion of the supporting member 1.

The supporting component 1 comprises a clamping piece 9 and supporting blocks 10, the clamping piece 9 is symmetrically arranged on two sides of the iron core 6 along the length direction of the base 5 and is used for supporting the coil 2, and the clamping piece 9 is a metal component, so that an auxiliary supporting effect of the coil 2 is guaranteed, and the supporting blocks 10 with an insulating function are additionally arranged on the top of the clamping piece 9, so that the coil 2 can be supported under the auxiliary supporting of the clamping piece 9 and the supporting blocks 10, and good insulating function can be kept.

The heat dissipation assembly 4 comprises a fan 7 and a bracket 8, wherein the fan 7 is arranged on the outer side of the clamping piece 9 and is used for carrying out air supply operation on the coil 2, so that the coil 2 can be subjected to air supply operation along the inclined direction under the action of an air source provided by the fan 7, and the fan 7 is arranged on the outer side of the clamping piece 9 (the iron core 6 is arranged in the clamping piece 9 and does not have the condition of installing the fan 7), so that the fan 7 cannot effectively send the air source into the coil 2 no matter in a horizontal or vertical arrangement mode, therefore, in order to improve the effective air supply amount of the fan 7, the bracket 8 fixedly connected with the base 5 is additionally arranged at the bottom of the fan 7, the bracket 8 is obliquely arranged, the inclined angle is 125-145 degrees, so that the fan 7 can carry out air supply operation on the coil 2 along the inclined direction, the air quantity entering the coil 2 is increased, the heat generated by the coil 2 can be rapidly taken away, and the heat dissipation performance of the coil 2 is improved.

The coil 2 is divided into a low-voltage coil 11, a high-voltage coil 12 and a medium-voltage coil 13 according to different voltages, the low-voltage coil 11 is arranged on the outer layer of the coil 2, the medium-voltage coil 13 is arranged on the inner layer of the coil 2, the high-voltage coil 12 is arranged between the low-voltage coil 11 and the medium-voltage coil 13, and in order to further improve ventilation and heat dissipation performance of the coil 2, ventilation holes 14 are uniformly formed in the circumferential directions of the low-voltage coil 11 and the high-voltage coil 12, the ventilation holes 14 can be circular or square, preferably arc-shaped, so that a wind source from the fan 7 can pass through along the ventilation holes 14, and then heat accumulated inside the coil 2 can be smoothly taken away.

In order to be able to increase the stability of the coil 2, a support element 1 is therefore also added to the top of the coil 2, so that a good and stable support of the coil 2 and the iron core 6 is achieved by the support element 1 being arranged symmetrically up and down.

If necessary, in order to improve the heat dissipation performance of the iron core 6, a ventilation channel 16 may be left in the middle position of the iron core 6, so as to divide the iron core 6 into a left part and a right part, and the iron core 6 is connected and supported in the transverse direction (i.e. the left-right direction) by a screw 15, so that the wind source from the fan 7 can also pass through the ventilation channel 16, thereby taking away the heat accumulated in the iron core 6.

And the bottom and the side of the coil 2 can be additionally provided with a support plate 3 for simple shielding and protection.

During the use, can be through carrying out the blast operation to the bottom of coil 2 and iron core 6 with the help of bracket 8 and the fan 7 that inclines to make the wind regime get into along the ventilation hole 14 on high-pressure ring 12, low-pressure ring 11 upper portion, thereby take away the inside heat that produces of coil 2, and a part wind regime still can blow through along the ventilation channel 16 of iron core 6, thereby also can take away the inside heat that gathers of iron core 6, thereby make the transformer can realize abundant forced air cooling heat dissipation, at the folder 9 and the riding shoe 10 with the help of symmetrical arrangement, can play good supporting role to coil 2 and iron core 6, can guarantee effective insulating effect again, make the transformer can safe and stable operation.

It will be understood that the present application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the spirit and scope thereof. Therefore, it is intended that the present application not be limited to the particular embodiments disclosed, but that the present application include all embodiments falling within the scope of the appended claims.

Claims

1. An air-cooled transformer comprising a base (5) for supporting a foundation, characterized in that: the upper portion of base (5) evenly is provided with a plurality of coils (2) along its length direction, and the inside of coil (2) is arranged by its wound iron core (6), is provided with between base (5) and coil (2) and is used for improving bearing subassembly (1) in clearance between base (5) and coil (2), and the lateral part of bearing subassembly (1) is then provided with radiator unit (4) that are used for improving the air velocity of flow.

2. An air-cooled transformer as claimed in claim 1, wherein: the support assembly (1) comprises clamping pieces (9), and the clamping pieces (9) are symmetrically arranged on two sides of the iron core (6) along the length direction of the base (5) and used for supporting the coil (2).

3. An air-cooled transformer according to claim 2, characterized in that: the top of the clamping piece (9) is provided with a supporting block (10) which can assist in supporting and has an insulating effect.

4. An air-cooled transformer as claimed in claim 1, wherein: the heat dissipation assembly (4) comprises a fan (7), and the fan (7) is arranged on the outer side of the clamping piece (9) and is used for carrying out air supply operation on the coil (2).

5. An air-cooled transformer as set forth in claim 4, wherein: the bottom of the fan (7) is provided with a bracket (8) which is fixedly connected with the base (5) and is obliquely arranged.

6. An air-cooled transformer as set forth in claim 5, wherein: the inclination angle of the bracket (8) is 125-145 degrees.

7. An air-cooled transformer as claimed in claim 1, wherein: the coil (2) is divided into a low-voltage ring (11), a high-voltage ring (12) and a medium-voltage ring (13), wherein the low-voltage ring (11) is arranged on the outer layer of the coil (2), the medium-voltage ring (13) is arranged on the inner layer of the coil (2), and the high-voltage ring (12) is arranged between the low-voltage ring (11) and the medium-voltage ring (13).

8. An air-cooled transformer according to claim 7, wherein: the low-pressure ring (11) and the high-pressure ring (12) are uniformly provided with ventilation holes (14) in the circumferential direction.

9. An air-cooled transformer as claimed in claim 1, wherein: the top of the coil (2) is also provided with a support member (1).

10. An air-cooled transformer as claimed in claim 1, wherein: a ventilation channel (16) for dividing the iron core (6) into a left part and a right part is reserved in the middle of the iron core (6), and the left part and the right part of the iron core (6) are connected and supported through a screw rod (15).