Transformer heat dissipation assembly

Abstract

The utility model provides a transformer heat dissipation assembly which comprises an oil tank, heat dissipation fins and a connecting piece, two connecting pipes are arranged on the upper portion and the lower portion of the side face of the oil tank, the heat dissipation fins are fixedly arranged on the connecting pipes and communicated with the connecting pipes, the connecting piece is fixedly arranged between the connecting pipes and the heat dissipation fins, and flanges are arranged on the heat dissipation fins and the connecting pipes respectively. The two flanges are fastened through a fastener, a first lining and a second lining are arranged on the two flanges respectively, and the connecting piece is arranged in the first lining and the second lining. According to the transformer heat dissipation assembly, through matched arrangement of the connecting pieces, the heat dissipation pieces and the oil tank, the sealing performance between the oil tank and the heat dissipation pieces can be improved, oil leakage is avoided, through arrangement of the flanges, it is guaranteed that the heat dissipation pieces can be disassembled and assembled, the heat dissipation pieces and the oil tank can be cleaned conveniently, and the heat dissipation efficiency is improved. Through the cooperative arrangement of the first lining and the second lining, installation of the cooling fins is facilitated, the installation efficiency is improved, and through the arrangement of the compensation part, it is ensured that the sealing sleeve can always generate the sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer heat dissipation component. Background Art

[0002] Oil-immersed transformers use oil as the main insulation means of the transformer and rely on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation, etc. Generally, the transformer oil in the oil tank circulates between the heat sink and the oil tank to reduce the transformer oil temperature, and the heat is removed by natural convection of the oil.

[0003] The existing heat sink is directly welded to the oil tank. Since the transformer oil will produce solid waste after long-term use, the heat sink is directly welded on the oil tank and its connection gap is small, which is easy to cause blockage during circulation, thereby affecting the heat dissipation of the transformer. Some heat sinks and oil tanks are fixed by bolts, and the heat sink and the oil tank are connected by a sealing gasket. Since the transformer oil circulates in the heat sink, the heat sink is heavier, and the gap at the connection is enlarged over a long period of time, thereby affecting the function of the sealing gasket and causing oil leakage. Utility Model Content

[0004] The utility model aims to provide a transformer heat dissipation component to solve the problem that the existing oil tank and the heat sink are easily blocked or leak oil.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A transformer heat dissipation component, comprising:

[0007] An oil tank, wherein two connecting pipes are arranged on the upper and lower sides of the oil tank; a heat sink is fixedly arranged on the connecting pipe and is connected to the connecting pipe; a connecting piece is fixedly arranged between the connecting pipe and the heat sink; flanges are respectively arranged on the heat sink and the connecting pipe, and the two flanges are fastened by fasteners, and a first bushing and a second bushing are respectively arranged on the two flanges, and the connecting piece is arranged in the first bushing and the second bushing.

[0008] Furthermore, the heat sink includes a support tube connected to the connecting tube and an external fin connected to the support tube. Two support tubes are arranged above and below the external fins, and the flange is fixedly arranged on the support tube.

[0009] Furthermore, the diameter of the first bushing is smaller than the diameter of the second bushing, and the first bushing is inserted into the second bushing.

[0010] Furthermore, the connecting member includes a sealing sleeve abutting against the second bushing, a top block abutting against the sealing sleeve, and a compensation portion abutting against the top block, the compensation portion is arranged in the first bushing, and the diameters of the top block and the sealing sleeve are equal to the inner diameter of the second bushing.

[0011] Furthermore, the compensation portion includes a pressure plate abutting against the first bushing, a spring supported between the pressure plate and the top block, and a special-shaped sleeve arranged between the pressure plate and the top block, and the middle part of the special-shaped sleeve abuts against the inner wall of the second bushing.

[0012] Furthermore, the top block and the pressure plate are provided with through holes which are concentric with the connecting pipe.

[0013] Furthermore, the middle portion of the special-shaped sleeve is configured to be an arc convex outward.

[0014] Furthermore, the sealing sleeve and the top block are respectively provided with grooves, and the two grooves are meshed with each other.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The transformer heat dissipation assembly described in the utility model can improve the sealing between the oil tank and the heat sink through the coordinated arrangement of the connecting piece, the heat sink and the oil tank, thereby avoiding oil leakage outward. The arrangement of the flange ensures that the heat sink can be disassembled and assembled, and the cleaning of the heat sink and the oil tank is convenient. The coordinated arrangement of the first bushing and the second bushing facilitates the installation of the heat sink and improves the installation efficiency. The arrangement of the compensation part ensures that the sealing sleeve can always produce a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the transformer heat dissipation assembly according to an embodiment of the utility model;

[0019] Figure 2 This is an exploded schematic diagram of the heat sink and the connecting pipe according to an embodiment of the utility model;

[0020] Figure 3 This is an exploded schematic diagram of the connecting member and the second bushing according to an embodiment of the utility model;

[0021] Figure 4 This is an exploded schematic diagram of the connecting member according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the compensation part described in the embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Fuel tank; 2. Pipe connection;

[0025] 3. heat sink; 301. support tube; 302. external fin;

[0026] 4. Connecting piece; 401. Sealing sleeve; 402. Top block; 403. Compensating part; 4031. Pressing plate; 4032. Spring; 4033. Special-shaped sleeve;

[0027] 404, through hole; 405, groove;

[0028] 5. Flange; 6. Fastener; 7. First bushing; 8. Second bushing. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] This embodiment relates to a transformer heat dissipation component, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes an oil tank 1, a heat sink 3, and a connecting piece 4.

[0034] Among them, two connecting pipes 2 are arranged on the upper and lower sides of the oil tank 1, the heat sink 3 is fixedly arranged on the connecting pipe 2 and is connected to the connecting pipe 2, the connecting piece 4 is fixedly arranged between the connecting pipe 2 and the heat sink 3, the heat sink 3 and the connecting pipe 2 are respectively provided with flanges 5, the two flanges 5 are fastened by fasteners 6, the two flanges 5 are respectively provided with a first bushing 7 and a second bushing 8, and the connecting piece 4 is arranged in the first bushing 7 and the second bushing 8.

[0035] It is worth mentioning that, according to actual conditions, multiple groups of heat sinks 3 can be arranged on the oil tank 1, and each heat sink is connected to the upper and lower pipes 2, so that the transformer oil in the oil tank 1 flows from the upper pipe 2 into the heat sink 3, and then flows into the oil tank 1 from the lower pipe 2 for circulating heat dissipation. That is to say, multiple pipes 2 matching the heat sink 3 are arranged on the oil tank 1, and the connector 4 is installed between the pipe 2 and the heat sink 3 to seal the heat sink 3 and the pipe 2. The flange 5 on the heat sink 3 is butt-jointed with the flange 5 on the pipe 2, and then the two flanges 5 are fastened by the fastener 6. The fastener 6 can be a bolt and nut. The bolt is inserted into the two flanges 5, and the nut is screwed on the bolt to tighten the two flanges 5. The fastener 6 can also clamp the connector 4 between the two flanges 5. The first bushing 7 and the second bushing 8 are located at the center of the two flanges 5. Such an arrangement facilitates the installation of the heat sink 3 and can also protect the connector 4.

[0036] Based on the above overall introduction, an exemplary structure of the transformer heat dissipation assembly of this embodiment is as follows: Figure 2 As shown, the heat sink 3 includes a support tube 301 connected to the pipe 2 and an outer fin 302 connected to the support tube 301. The support tube 301 is provided with two fins above and below the outer fin 302. The flange 5 is fixedly provided on the support tube 301. The diameter of the first bushing 7 is smaller than the diameter of the second bushing 8. The first bushing 7 is inserted into the second bushing 8.

[0037] It should be noted that one of the flanges 5 is installed on the support tube 301, and the other flange 5 is installed on the connecting pipe 2, that is, the upper and lower support tubes 301 are connected to the upper and lower connecting pipes 2, and multiple external fins 302 are arranged on the support tube 301, so as to improve the heat dissipation efficiency. The transformer oil flows from the upper support tube 301 into the external fins 302 for heat dissipation, and then flows from the external fins 302 into the lower support tube 301, so as to realize circulating heat dissipation. The outer diameter of the first bushing 7 is in contact with the inner diameter of the second bushing 8, and the first bushing 7 is slidably arranged in the second bushing 8. Such an arrangement can facilitate the installation of the two flanges 5 and avoid adjusting the position. It only needs to insert the first bushing 7 into the second bushing 8 to align the position, which is convenient for the installation of the fastener 6.

[0038] As a preferred embodiment, Figure 3 and Figure 4As shown, in this embodiment, the connecting member 4 includes a sealing sleeve 401 abutting against the second bushing 8, a top block 402 abutting against the sealing sleeve 401, and a compensation portion 403 abutting against the top block 402, the compensation portion 403 is arranged in the first bushing 7, and the diameters of the top block 402 and the sealing sleeve 401 are equal to the inner diameter of the second bushing 8.

[0039] It should be noted that the sealing sleeve 401 abuts against the flange 5 on the connecting pipe 2, the top block 402 is used to support the sealing sleeve 401, and the top block 402 and the sealing sleeve 401 are located in the second bushing 8, ensuring that the sealing sleeve 401 can seal between the flange 5 and the top block 402, and the transformer oil flows from the top block 402 into the support tube 301, one end of the compensation part 403 is used to support the top block 402, and the other end abuts against the flange 5 on the support tube 301. Since the two flanges 5 are tightened by the fastener 6, the compensation part 403 is subjected to force at this time, ensuring that the top block 402 always supports the sealing sleeve 401 and abuts against the flange 5 on the connecting pipe 2, the diameter of the sealing sleeve 401 is the same as the inner diameter of the second bushing 8, ensuring that the sealing sleeve 401 can seal the connecting pipe 2.

[0040] As a preferred embodiment, Figure 5 As shown, in this embodiment, the compensation portion 403 includes a pressure plate 4031 abutting against the first bushing 7, a spring 4032 supported between the pressure plate 4031 and the top block 402, and a special-shaped sleeve 4033 arranged between the pressure plate 4031 and the top block 402, and the middle part of the special-shaped sleeve 4033 abuts against the inner wall of the second bushing 8.

[0041] It should be noted that the pressure plate 4031 abuts against the flange 5 on the support tube 301 and is located in the first bushing 7. When the fastener 6 tightens the two flanges 5, the support tube 301 pushes the pressure plate 4031 to move toward the end close to the connecting pipe 2. At this time, the spring 4032 is subjected to force, and the spring 4032 pushes the top block 402 and the sealing sleeve 401 to abut, so that the sealing sleeve 401 seals the second bushing 8. Due to the setting of the spring 4032, no matter whether the distance between the two flanges 5 increases or decreases, the sealing sleeve 401 always ensures the sealing state in the second bushing 8. The pressure plate 4031 and the first bushing 7 are also provided with a sealing sleeve 401, and the installation method thereof is the same as the installation method of the top block 402 and the sealing sleeve 401, so it is not repeated. When the spring 4032 is compressed, the special-shaped sleeve 4033 is deformed, thereby abutting against the inner wall of the second bushing 8, thereby achieving sealing. Such a setting can improve the sealing between the support tube 301 and the connecting pipe 2.

[0042] As a preferred embodiment, Figure 5As shown, the top block 402 and the pressure plate 4031 of this embodiment are provided with a through hole 404 concentric with the pipe 2. The middle part of the special-shaped sleeve 4033 is set to be an arc convex outward. The sealing sleeve 401 and the top block 402 are respectively provided with grooves 405, and the two grooves 405 are meshed with each other.

[0043] Specifically, the size of the through hole 404 is the same as the inner diameter of the support tube 301 and the connecting pipe 2, ensuring that when the connecting piece 4 seals the support tube 301 and the connecting pipe 2, the transformer oil can flow through the through hole 404, and the purpose of the special-shaped sleeve 4033 protruding outward is that when the distance between the pressure plate 4031 and the top block 402 becomes smaller, the special-shaped sleeve 4033 can be deformed outward, thereby improving the sealing between the special-shaped sleeve 4033 and the second bushing 8, the groove 405 opened in the sealing sleeve 401 is located on the side of the through hole 404, and the groove 405 opened in the top block 402 is located on the outer circle, so that it is ensured that the two grooves 405 can mesh, and the purpose of the meshing is to ensure that the flange 5 and the second bushing 8 can be sealed when the top block 402 and the sealing sleeve 401 abut.

[0044] The transformer heat dissipation assembly in this embodiment can improve the sealing between the oil tank 1 and the heat sink 3 through the coordinated arrangement of the connector 4, the heat sink 3 and the oil tank 1, thereby avoiding oil leakage. The arrangement of the flange 5 ensures that the heat sink 3 can be disassembled and assembled, and the cleaning of the heat sink 3 and the oil tank 1 is convenient. The coordinated arrangement of the first bushing 7 and the second bushing 8 facilitates the installation of the heat sink 3 and improves the installation efficiency. The arrangement of the compensation portion 403 ensures that the sealing sleeve 401 can always produce a sealing effect.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 transformer heat dissipation component, characterized in that: include: An oil tank (1), wherein two connecting pipes (2) are arranged on the upper and lower sides of the oil tank (1); A heat sink (3) is fixedly arranged on the connecting pipe (2) and is connected to the connecting pipe (2); A connecting member (4) fixedly arranged between the connecting pipe (2) and the heat sink (3); Flanges (5) are respectively provided on the heat sink (3) and the connecting pipe (2); the two flanges (5) are fastened by fasteners (6); a first bushing (7) and a second bushing (8) are respectively provided on the two flanges (5); and the connecting member (4) is arranged in the first bushing (7) and the second bushing (8).

2. The transformer heat dissipation assembly according to claim 1, characterized in that: The heat sink (3) comprises a support tube (301) connected to the connecting tube (2) and an external fin (302) connected to the support tube (301); two support tubes (301) are arranged above and below the external fin (302); and the flange (5) is fixedly arranged on the support tube (301).

3. The transformer heat dissipation assembly according to claim 2, characterized in that: The diameter of the first bushing (7) is smaller than the diameter of the second bushing (8), and the first bushing (7) is inserted into the second bushing (8).

4. The transformer heat dissipation assembly according to claim 3, characterized in that: The connecting member (4) comprises a sealing sleeve (401) abutting against the second bushing (8), a top block (402) abutting against the sealing sleeve (401), and a compensating portion (403) abutting against the top block (402); the compensating portion (403) is arranged in the first bushing (7); the diameters of the top block (402) and the sealing sleeve (401) are equal to the inner diameter of the second bushing (8).

5. The transformer heat dissipation assembly according to claim 4, characterized in that: The compensating portion (403) comprises a pressing plate (4031) abutting against the first bushing (7), a spring (4032) supported between the pressing plate (4031) and the top block (402), and a special-shaped sleeve (4033) arranged between the pressing plate (4031) and the top block (402), wherein the middle portion of the special-shaped sleeve (4033) abuts against the inner wall of the second bushing (8).

6. The transformer heat dissipation assembly according to claim 5, characterized in that: The top block (402) and the pressure plate (4031) are provided with a through hole (404) which is concentric with the connecting pipe (2).

7. The transformer heat dissipation assembly according to claim 5, characterized in that: The middle portion of the special-shaped sleeve (4033) is arranged in an arc shape that bulges outwards.

8. The transformer heat dissipation assembly according to claim 4, characterized in that: The sealing sleeve (401) and the top block (402) are respectively provided with grooves (405), and the two grooves (405) are meshed with each other.

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