Transformer heat dissipation structure

Abstract

The utility model discloses a transformer heat dissipation structure, include: transformer casing, side wall is equipped with the convex part, and the convex part has the first end face and four side surfaces of being located in the first end face periphery side, top heat dissipation board is pasted with the side surface of top, two side heat dissipation boards are pasted with two opposite side surfaces respectively, end heat dissipation board is pasted with the first end face, and end heat dissipation board corresponds the side of top heat dissipation board and side heat dissipation board and is equipped with first elastic press strip and second elastic press strip respectively, to press the top heat dissipation board and side heat dissipation board of corresponding respectively, make top heat dissipation board and side heat dissipation board and corresponding side surface close, and end heat dissipation board is fixedly connected with transformer casing. The utility model utilizes first elastic press strip and press the top heat dissipation board, make top heat dissipation board and corresponding side surface close, utilize second elastic press strip and press the side heat dissipation board, make side heat dissipation board and corresponding side surface close, avoid the close not closely between metal parts and lead to the low heat conduction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of transformer heat dissipation technology, and in particular, to a transformer heat dissipation structure. Background Technology

[0002] A transformer is a type of electrical equipment primarily used to transform voltage levels in a power system. The basic working principle of a transformer is to utilize electromagnetic induction to increase or decrease voltage by changing the turns ratio of the coils.

[0003] Transformers generate heat during operation, which needs to be dissipated to prevent heat buildup. For example, oil-immersed transformers rely on oil as a cooling medium. They typically consist of a transformer body and an oil tank, employing three cooling methods: oil-immersed self-cooling, oil-immersed air-cooling, and forced oil circulation. Oil-immersed transformers are characterized by strong heat dissipation performance, low manufacturing and maintenance costs, and convenient recycling, making them suitable for outdoor and relatively harsh environments, such as waterproof locations, pole mounting, and outdoor applications. Sometimes, to increase the casing volume and heat dissipation area, an outward-expanding protrusion is added to the side of the transformer casing, and a heat dissipation component is installed on the surface of this protrusion. For example, an outward-expanding oil tank is located on the side wall of the oil-immersed transformer casing, increasing the internal volume and expanding the heat dissipation area. However, due to manufacturing errors and assembly requirements, it is often difficult to ensure that the heat dissipation component makes tight contact with the surface of the protrusion, resulting in a misalignment between metal parts, reducing heat conduction efficiency and heat dissipation effect. Furthermore, if each plate is installed individually, each plate requires fasteners to be fixed to the protrusion, leading to a large number of fasteners and a cumbersome installation process. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a transformer heat dissipation structure that can reduce the number of fastener installation steps and ensure that the heat dissipation structure fits tightly with the protrusions of the transformer housing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A transformer heat dissipation structure includes: a transformer housing with a protrusion on its side wall, the protrusion having a first end face and four side surfaces surrounding the first end face; a top heat dissipation plate, which is attached to the top side surface and has first heat dissipation fins arranged at intervals on its outer surface; two side heat dissipation plates, which are respectively attached to two opposite side surfaces and have second heat dissipation fins arranged at intervals on their outer surfaces; and an end heat dissipation plate, which is attached to the first end face and has third heat dissipation fins arranged at intervals on its outer surface. The end heat dissipation plate has a first elastic pressure strip and a second elastic pressure strip on the side edges corresponding to the top heat dissipation plate and the side heat dissipation plate, respectively, to press the corresponding top heat dissipation plate and the side heat dissipation plate tightly against the corresponding side surfaces. The end heat dissipation plate is fixedly connected to the transformer housing.

[0007] Furthermore, the end heat sink is provided with connecting corner strips extending toward the transformer housing at its four corners, and the connecting corner strips are located on the outside of the protrusion; a connecting plate is provided at the end of the connecting corner strip facing the transformer housing, and the connecting plate and the transformer housing are provided with corresponding holes for connection and fixation by fasteners.

[0008] Furthermore, the top heat sink and the side heat sink are located between two connecting corner strips on the corresponding sides to limit the position of the top heat sink and the side heat sink.

[0009] Furthermore, the protrusion is provided on at least one of the left and right sides of the transformer housing, the first heat dissipation fins are arranged in the front-back direction, and the second heat dissipation fins are arranged in the left-right direction.

[0010] Furthermore, a heat dissipation gap is formed between two adjacent first heat dissipation fins, and the first elastic pressure strip is embedded in the heat dissipation gap to press the top heat dissipation plate.

[0011] Furthermore, multiple first elastic pressure strips are arranged in the front-to-back direction to press the top heat sink at multiple locations.

[0012] Furthermore, the second heat dissipation fin extends in the vertical direction, and the second heat dissipation fin has a notch that extends in the horizontal direction. The second elastic pressure strip is inserted into the notch to press the side heat dissipation plate.

[0013] Furthermore, the notch and the second elastic pressure strip are arranged in multiple sets along the vertical direction to press the side heat sink at multiple locations.

[0014] Furthermore, the outer ends of both the first and second elastic strips curve outwards.

[0015] Furthermore, a bottom heat sink is connected to the bottom of the end heat sink, the bottom heat sink is in contact with the side surface of the bottom, and the outer surface of the bottom heat sink is provided with a fourth heat sink fin that is spaced apart.

[0016] This utility model has the following beneficial effects:

[0017] The protrusions increase the internal volume of the transformer housing and the heat dissipation area. Heat dissipation is achieved by having the top, side, and end heat dissipation plates adhere to the surface of the protrusions. A first elastic strip presses the top heat dissipation plate firmly against its corresponding side surface, and a second elastic strip presses the side heat dissipation plate firmly against its corresponding side surface, preventing poor heat transfer efficiency caused by loose metal contact. Furthermore, fasteners are not required to secure the top and side heat dissipation plates, reducing fastener installation steps and ensuring a tight fit between each heat dissipation plate and the protrusions on the transformer housing, thus guaranteeing effective heat dissipation.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, 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 undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the decomposed state structure;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the top heat sink, side heat sink, and end heat sink;

[0023] Figure 4 yes Figure 3 A schematic diagram of the decomposed state structure;

[0024] Figure 5 This is a schematic diagram of the end heat sink structure;

[0025] Figure 6 This is a partial sectional view of the mounting structure of the top heat sink.

[0026] Figure 7 This is a partial sectional view of the installation structure of the side heat sink.

[0027] Legend:

[0028] Transformer housing 100, protrusion 110, first end face 111, side surface 112, heat dissipation auxiliary plate 120;

[0029] Top heat sink 200, first heat sink 210, heat dissipation gap 211;

[0030] Side heat sink 300, second heat sink 310, notch 311;

[0031] The heat sink 400, the third heat sink 410, the first elastic pressure strip 420, the second elastic pressure strip 430, the connecting corner strip 440, the connecting plate 450, the bottom heat sink 460, and the fourth heat sink 461. Detailed Implementation

[0032] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Please refer to Figure 1 and Figure 2 A preferred embodiment of the present invention provides a transformer heat dissipation structure, including a transformer housing 100, a top heat dissipation plate 200, a side heat dissipation plate 300, and an end heat dissipation plate 400.

[0037] The transformer housing 100 has a protrusion 110 on its side wall. The protrusion 110 has a first end face 111 and four side surfaces 112 disposed around the first end face 111. The first end face 111 is away from the transformer housing 100. The top heat sink 200 is in contact with the top side surface 112. The outer surface of the top heat sink 200 is provided with first heat sink fins 210 arranged at intervals, thereby increasing the heat dissipation area.

[0038] Two side heat sinks 300 are provided, and the side heat sinks 300 are respectively attached to two opposite side surfaces 112, such as... Figure 1 and Figure 2 As shown, two side heat sinks 300 are provided at intervals, and the two side heat sinks 300 are respectively attached to the front and rear side surfaces 112; the outer surface of the side heat sink 300 is provided with second heat dissipation fins 310 arranged at intervals, thereby increasing the heat dissipation area.

[0039] The end heat sink 400 is attached to the first end face 111. The outer surface of the end heat sink 400 is provided with spaced-apart third heat sink fins 410 to increase the heat dissipation area. The end heat sink 400 has a first elastic strip 420 and a second elastic strip 430 on the sides corresponding to the top heat sink 200 and the side heat sink 300, respectively, to press the corresponding top heat sink 200 and side heat sink 300 tightly against their respective side surfaces 112. 00 is fixedly connected to the transformer housing 100; specifically, the end heat sink 400 is provided with a first elastic pressure strip 420 on the top side of the top heat sink 200, the first elastic pressure strip 420 presses the top heat sink 200 so that the top heat sink 200 is in close contact with the top side surface 112; the end heat sink 400 is provided with a second elastic pressure strip 430 on the front and rear sides of the side heat sink 300, the second elastic pressure strip 430 presses the side heat sink 300 so that the side heat sink 300 is in close contact with the front and rear side surfaces 112.

[0040] This utility model provides a transformer heat dissipation structure. The protrusion 110 increases the internal volume of the transformer housing 100 and the heat dissipation area. Heat dissipation is achieved by having the top heat dissipation plate 200, side heat dissipation plate 300, and end heat dissipation plate 400 adhere to the surface of the protrusion 110. A first elastic pressure strip 420 presses the top heat dissipation plate 200 tightly against the corresponding side surface 112, and a second elastic pressure strip 430 presses the side heat dissipation plate 300 tightly against the corresponding side surface 112, preventing poor heat conduction efficiency due to loose metal contact. Furthermore, the first and second elastic pressure strips 420 and 430 eliminate the need for fasteners to fix the top heat dissipation plate 200 and side heat dissipation plate 300, reducing fastener installation steps and ensuring a tight fit between the heat dissipation plates and the protrusion of the transformer housing, thus guaranteeing effective heat dissipation.

[0041] Reference Figure 1 and Figure 3 In some embodiments of this utility model, the end heat sink 400 is provided with connecting corner strips 440 extending toward the transformer housing 100 at its four corners. The connecting corner strips 440 are located on the outside of the protrusion 110. The end of the connecting corner strip 440 facing the transformer housing 100 is provided with a connecting plate 450. The connecting plate 450 and the transformer housing 100 are provided with corresponding holes for connection and fixation by fasteners, thereby realizing the connection and fixation between the end heat sink 400 and the transformer housing 100. The fasteners can be screws.

[0042] Reference Figure 1 and Figure 3 In some embodiments of this utility model, the top heat sink 200 and the side heat sink 300 are located between two connecting corner strips 440 on corresponding sides to limit the position of the top heat sink 200 and the side heat sink 300. That is, the top heat sink 200 is located between two connecting corner strips 440 on the top side, and the side heat sink 300 is located between two connecting corner strips 440 on the front or rear side. This limits the position of the top heat sink 200 in the front-rear direction and the side heat sink 300 in the up-down direction. This ensures that the top heat sink 200 and the side heat sink 300 are not only pressed together but also limited by the connecting corner strips 440, making the installation of the top heat sink 200 and the side heat sink 300 more stable and eliminating the need for fasteners to fix both the top heat sink 200 and the side heat sink 300. Specifically, the connecting corner strip 440 has an L-shaped cross-section.

[0043] In some embodiments of this utility model, the protrusion 110 is provided on at least one of the left and right sides of the transformer housing 100, as shown in the figure. Figure 1 and Figure 2 In this embodiment, the transformer housing 100 has protrusions 110 on both the left and right sides, and heat dissipation auxiliary plates 120 are installed on the front and rear sides of the transformer housing 100 by fasteners. The first heat dissipation fins 210 are arranged in the front-back direction, and the second heat dissipation fins 310 are arranged in the left-right direction.

[0044] Reference Figures 3 to 5 In a further embodiment of this utility model, a heat dissipation gap 211 is formed between two adjacent first heat dissipation fins 210. The first elastic pressure strip 420 is embedded in the heat dissipation gap 211 to press the top heat dissipation plate 200. Thus, the heat dissipation gap 211 formed by the spaced first heat dissipation fins 210 is used to embed the first elastic pressure strip 420, allowing the first elastic pressure strip 420 to extend above the top heat dissipation plate 200. The heat dissipation gap 211 avoids structural interference, and the first elastic pressure strip 420 embedded in the heat dissipation gap 211 also has a certain limiting and positioning effect on the top heat dissipation plate 200.

[0045] In a further embodiment of the present invention, a plurality of first elastic pressure strips 420 are arranged in the front-to-back direction to press the top heat sink 200 at multiple positions, thereby improving the pressing effect on the top heat sink 200 and making the top heat sink 200 more fully and tightly attached to the top side surface 112.

[0046] Reference Figures 3 to 5 In a further embodiment of this utility model, the second heat dissipation fin 310 extends in the vertical direction, allowing hot air to be smoothly discharged upward through the vertical channels between the second heat dissipation fins 310. The second heat dissipation fin 310 is provided with a notch 311 extending in the left-right direction. The second elastic pressure strip 430 is embedded in the notch 311 to press the side heat dissipation plate 300, so that the second elastic pressure strip 430 can extend to the side of the side heat dissipation plate 300 through the notch 311, thereby pressing the side heat dissipation plate 300. The notch 311 can effectively reduce structural interference, and the second elastic pressure strip 430 embedded in the notch 311 also has a certain limiting and positioning effect on the side heat dissipation plate 300.

[0047] In a further embodiment of the present invention, the notch 311 and the second elastic pressure strip 430 are arranged in multiple sets along the vertical direction to press the side heat sink 300 at multiple positions, thereby improving the pressing effect on the side heat sink 300 and making the side heat sink 300 more fully adhere to the side surface 112.

[0048] Reference Figures 6 to 7 In a further embodiment of this utility model, the outer ends of both the first elastic strip 420 and the second elastic strip 430 are curved outwards, thereby embedding the first elastic strip 420 and the second elastic strip 430 into the heat dissipation gap 211 and the notch 311, avoiding structural interference between the end top heat dissipation plate 200 and the side heat dissipation plate 300. The first elastic strip 420 and the second elastic strip 430 are made of metal material and have a certain elastic deformation capability, such as being made of aluminum or copper. The first elastic strip 420 and the second elastic strip 430 arch inward in the middle. One end of the first elastic strip 420 and the second elastic strip 430 are fixedly connected to the end heat sink 400, and the other end is suspended and raised, so that the outer ends of the first elastic strip 420 and the second elastic strip 430 can be elastically deformed. When the first elastic strip 420 is inserted into the heat sink gap 211 and the second elastic strip 430 is inserted into the notch 311, the first elastic strip 420 and the second elastic strip 430 will deform outward and have an inward elastic force, thereby pressing the top heat sink 200 and the side heat sink 300.

[0049] Reference Figures 3 to 5In a further embodiment of this utility model, the bottom of the end heat sink 400 is connected to the bottom heat sink 460, the bottom heat sink 460 is in contact with the side surface 112 of the bottom, and the outer surface of the bottom heat sink 460 is provided with fourth heat sink fins 461 arranged at intervals, thereby increasing the heat dissipation area and ensuring the heat dissipation effect.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transformer heat dissipation structure, characterized in that, include: The transformer housing (100) has a protrusion (110) on its side wall. The protrusion (110) has a first end face (111) and four side surfaces (112) on the periphery of the first end face (111). The top heat sink (200) is in contact with the side surface (112) at the top, and the outer surface is provided with first heat sink fins (210) arranged at intervals; Two side heat dissipation plates (300) are respectively attached to two opposite side surfaces (112), and the outer surface is provided with second heat dissipation fins (310) arranged at intervals; The end heat sink (400) is attached to the first end face (111), and the outer surface is provided with third heat sink fins (410) arranged at intervals. The end heat sink (400) is provided with a first elastic pressure strip (420) and a second elastic pressure strip (430) on the side of the top heat sink (200) and the side heat sink (300) respectively, so as to press the corresponding top heat sink (200) and the side heat sink (300) tightly, so that the top heat sink (200) and the side heat sink (300) are in close contact with the corresponding side surface (112). The end heat sink (400) is fixedly connected to the transformer housing (100).

2. The transformer heat dissipation structure according to claim 1, characterized in that, The end heat sink (400) has connecting corner strips (440) extending toward the transformer housing (100) at its four corners. The connecting corner strips (440) are located on the outside of the protrusion (110). The end of the connecting corner strip (440) facing the transformer housing (100) is provided with a connecting plate (450). The connecting plate (450) and the transformer housing (100) are provided with corresponding holes for connection and fixation by fasteners.

3. The transformer heat dissipation structure according to claim 2, characterized in that, The top heat sink (200) and the side heat sink (300) are located between two connecting corner strips (440) on the corresponding sides to limit the position of the top heat sink (200) and the side heat sink (300).

4. The transformer heat dissipation structure according to claim 1, characterized in that, The protrusion (110) is provided on at least one of the left and right sides of the transformer housing (100), the first heat dissipation fins (210) are arranged in the front-back direction, and the second heat dissipation fins (310) are arranged in the left-right direction.

5. The transformer heat dissipation structure according to claim 4, characterized in that, A heat dissipation gap (211) is formed between two adjacent first heat dissipation fins (210), and the first elastic pressure strip (420) is embedded in the heat dissipation gap (211) to press the top heat dissipation plate (200).

6. The transformer heat dissipation structure according to claim 4, characterized in that, The first elastic pressure strip (420) is arranged in multiple ways along the front-back direction to press the top heat sink (200) at multiple positions.

7. The transformer heat dissipation structure according to claim 4, characterized in that, The second heat dissipation fin (310) extends in the vertical direction and has a notch (311) that extends in the horizontal direction. The second elastic pressure strip (430) is inserted into the notch (311) to press the side heat dissipation plate (300).

8. The transformer heat dissipation structure according to claim 7, characterized in that, The notch (311) and the second elastic pressure strip (430) are arranged in multiple sets along the vertical direction to press the side heat sink (300) at multiple locations.

9. The transformer heat dissipation structure according to any one of claims 1 to 8, characterized in that, The outer ends of both the first elastic strip (420) and the second elastic strip (430) are raised outwards.

10. The transformer heat dissipation structure according to any one of claims 1 to 8, characterized in that, The bottom of the end heat sink (400) is connected to the bottom heat sink (460), the bottom heat sink (460) is in contact with the side surface (112) of the bottom, and the outer surface of the bottom heat sink (460) is provided with a fourth heat dissipation fin (461) spaced apart.

Images