A transformer cooling device for a substation

Abstract

This utility model provides a transformer cooling device for a substation, comprising: a transformer assembly; a coolant tank disposed on and connected to the transformer assembly; a self-cooling circulating radiator disposed on one side of the transformer assembly and connected to the transformer assembly, for receiving coolant to dissipate heat from the transformer assembly; and a fan disposed on one side of the self-cooling circulating radiator, with the projection of the self-cooling circulating radiator toward the grounding end covering the fan, and the fan outputting air energy to the self-cooling circulating radiator. The technical problem solved by this utility model is that in related technologies, the heat dissipation of transformers in substations mainly relies on the temperature of the natural environment and lacks an independent cooling device, which makes it impossible for transformers to effectively dissipate heat in high-temperature natural environments or under heavy system loads.

Description

Technical Field

[0001] This utility model relates to the field of substation technology, and more specifically, to a transformer cooling device for a substation. Background Technology

[0002] As the power system develops towards intelligence and high load capacity, and the scale of new energy grid connection continues to expand, the operational stability of substations, as the core hub for power transmission and voltage transformation, directly determines the reliability of power supply.

[0003] Transformers are the core equipment of substations. They mainly convert electrical energy through electromagnetic induction between the internal magnetic core and windings. During operation, the magnetic hysteresis loss of the magnetic core and the copper loss of the windings continuously generate a large amount of heat.

[0004] However, there is at least one problem with the relevant technology: the heat dissipation of transformers in substations mainly relies on the temperature of the natural environment and lacks an independent cooling device. This makes it impossible for transformers to effectively dissipate heat in high-temperature natural environments or when the system load is high. Utility Model Content

[0005] The technical problem solved by this utility model is that in related technologies, the heat dissipation of transformers in substations mainly relies on the temperature of the natural environment and lacks an independent cooling device. This makes it impossible for transformers to effectively dissipate heat in high-temperature natural environments or when the system load is high.

[0006] To address the aforementioned problems, this utility model provides a transformer cooling device for a substation, comprising: a transformer assembly; a coolant tank disposed on and connected to the transformer assembly; a self-cooling circulating radiator disposed on one side of the transformer assembly and connected to the transformer assembly, for receiving coolant to dissipate heat from the transformer assembly; and a fan disposed on one side of the self-cooling circulating radiator, with the projection of the self-cooling circulating radiator toward the grounding end covering the fan, and the fan outputting wind energy to the self-cooling circulating radiator.

[0007] Compared with existing technologies, the technical effects achieved by this solution are as follows: Compared with related technologies that lack autonomous cooling devices, this invention forms an active coolant circulation path by setting up a coolant tank, a self-cooling circulation radiator, and transformer components. Utilizing the density change of the coolant after heating, it achieves heat transfer from transformer heat generation to coolant transfer to the radiator for cooling, thereby improving the self-heating capacity of the transformer components. Furthermore, by setting up a fan to output air energy to the self-cooling circulation radiator, and ensuring the radiator's projection covers the fan to guarantee full air energy utilization, the forced self-cooling circulation accelerates heat exchange between the radiator and the air. In high-temperature environments or when the transformer is under high load, this significantly improves heat dissipation efficiency and prevents self-cooling circulation failure. Finally, through the synergy of autonomous coolant circulation and forced air cooling by the fan, a multi-dimensional autonomous heat dissipation mechanism is constructed, covering the heat dissipation needs of different operating conditions and ensuring stable transformer operation.

[0008] In one embodiment of this utility model, the self-cooling circulation radiator includes: a heat dissipation group, which is located on one side of the transformer assembly and is connected to the transformer assembly.

[0009] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the heat dissipation unit is directly connected to the transformer assembly, which shortens the coolant transmission path, reduces heat loss, enhances the immediacy of heat exchange, and further ensures heat dissipation efficiency.

[0010] In one embodiment of this utility model, there are multiple heat dissipation groups, which are arranged along the length of the transformer assembly.

[0011] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: multiple heat dissipation groups are arranged along the length of the transformer assembly, which not only expands the total heat dissipation area of ​​the radiator, allowing it to accommodate more coolant and dissipate heat simultaneously, significantly improving the heat dissipation per unit time; but also makes the heat dissipation area more compatible with the heat generation area distributed along the length of the transformer, achieving uniform heat dissipation of the transformer and avoiding local overheating.

[0012] In one embodiment of this utility model, the heat dissipation assembly includes: multiple heat dissipation fins, which are arranged along the length of the transformer assembly, and an air passage is formed between two adjacent heat dissipation fins; the projection of the air passage covers the fan.

[0013] Compared with existing technologies, the technical effects achieved by this solution are as follows: the heat dissipation fins increase the contact area between the heat sink and the air, enhancing the natural convection heat dissipation capability; at the same time, the airflow channel formed by adjacent fins projects and covers the fan, ensuring that the airflow generated by the fan directly passes through all airflow channels, providing an efficient heat exchange interface for air cooling and self-cooling, forcing airflow to flow quickly across the fin surface, maximizing the synergistic effect of air cooling and fin heat exchange, and further improving heat dissipation efficiency.

[0014] In one embodiment of this utility model, the self-cooling circulation radiator further includes: an inlet pipe and a return pipe; the inlet pipe is connected in series with multiple heat dissipation fins; and the return pipe is connected in series with multiple heat dissipation fins.

[0015] Compared with existing technologies, the technical effects achieved by this solution are as follows: by setting up inlet and outlet water pipes and connecting the circulation paths of all heat dissipation fins in a single heat dissipation group in series, the coolant can flow through each fin sequentially, realizing multi-fin relay heat dissipation, allowing the coolant to gradually cool down during flow, and increasing the heat dissipation depth of a single cycle; moreover, the series structure simplifies the pipeline layout, facilitates centralized control of the coolant and transmission of circulation power, and ensures circulation stability.

[0016] In one embodiment of this utility model, a circulation path is provided inside the heat dissipation fins; one end of the water inlet pipe is connected to the circulation path, and the other end is connected to the water inlet of the transformer assembly; one end of the water return pipe is connected to the circulation path, and the other end is connected to the water return of the transformer assembly.

[0017] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the specific path of coolant circulation is clearly defined as transformer assembly, inlet pipe, internal circulation path of heat dissipation fins, return pipe to transformer assembly, ensuring that coolant flows continuously and stably between transformer and radiator, and achieving continuous heat dissipation.

[0018] In one embodiment of this utility model, the transformer assembly includes: a housing, the housing having a receiving space, a coolant tank connected to the receiving space; a water inlet and a water outlet located on the housing and connected to the receiving space; a magnetic core winding located in the receiving space; the receiving space, the water inlet, the water inlet pipe, the circulation path, the water outlet pipe, and the water outlet together constitute a coolant circulation loop.

[0019] Compared with existing technologies, the technical effects achieved by this solution are as follows: the housing space of the transformer assembly provides a place for storage and initial heat exchange of the coolant; the heat generated by the magnetic core winding can be directly transferred to the internal coolant, realizing efficient short-distance heat transfer from generation to absorption; at the same time, the closed-loop coordination of the coolant circulation loop allows the coolant to circulate around the magnetic core winding, precisely removing the heat from the core components; the coolant tank can also replenish the coolant or stabilize the pressure, ensuring long-term circulation and achieving efficient heat dissipation from the source inside the transformer.

[0020] In one embodiment of this utility model, the heat dissipation assembly further includes: a connecting rib, which is disposed on one side of the heat dissipation fins and connects to multiple heat dissipation fins.

[0021] Compared with existing technologies, the technical effects achieved by this solution are as follows: the connecting ribs connect multiple heat dissipation fins into a whole, enhancing the structural strength and stability of the heat dissipation assembly, preventing the fins from deforming or misaligning due to coolant impact or fan wind force, and ensuring long-term operational reliability; moreover, the layout of the connecting ribs does not affect the heat dissipation area and airflow channel of the fins, strengthening the structure without sacrificing heat dissipation performance.

[0022] In one embodiment of this utility model, the self-cooling circulation radiator further includes: a spray water pipeline, which is disposed on the heat dissipation fins; a spray head, which is disposed on the spray water pipeline and is disposed corresponding to the heat dissipation fins; the spray water pipeline and the spray head cooperate to form a spray cooling zone, and the heat dissipation fins are located in the spray cooling zone.

[0023] Compared with existing technologies, the technical effects achieved by this solution are as follows: the spray water pipeline and the spray head form a spray cooling zone, and the heat dissipation capacity is further enhanced by the latent heat of vaporization of water through water spraying the heat dissipation fins, realizing triple heat dissipation of air cooling, self-cooling and water cooling; and the spray head is set to correspond to the heat dissipation fins, so that water is sprayed precisely on the fin surface, maximizing the contact area between water and fins, improving water cooling heat exchange efficiency, and further ensuring heat dissipation safety under extreme working conditions.

[0024] In one embodiment of this utility model, it further includes: a cooling control box, which is located on one side of the transformer assembly and electrically connected to the self-cooling circulation radiator and the fan.

[0025] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the cooling control box can intelligently monitor the transformer temperature parameters and automatically control the fan speed, spray system switch, etc., to achieve heat dissipation on demand.

[0026] By adopting the technical solution of this utility model, the following technical effects can be achieved: (1) This utility model forms an active coolant circulation path by setting up a coolant tank, a self-cooling circulation radiator and a transformer assembly. It utilizes the density change of the coolant after it is heated to realize the heat transfer of the transformer generating heat and the coolant being transferred to the radiator for cooling, thereby improving the self-heating capacity of the transformer assembly. On this basis, by setting up a fan to output wind energy to the self-cooling circulation radiator, and the projection of the self-cooling circulation radiator covering the fan to ensure that the wind energy is fully utilized, the self-cooling circulation is forced to accelerate the heat exchange between the radiator and the air. In high-temperature environments or when the transformer generates heat under high load, the heat dissipation efficiency is greatly improved, and the self-cooling circulation heat dissipation failure is avoided. Finally, through the synergy of the self-circulation of coolant and the forced air cooling of the fan, a multi-dimensional self-heating mechanism is constructed to cover the heat dissipation needs of different working conditions and ensure the stable operation of the transformer. (2) In this utility model, multiple heat dissipation groups are arranged along the length of the transformer assembly, which not only expands the total heat dissipation area of ​​the radiator, can accommodate more coolant and dissipate heat at the same time, and significantly improves the heat dissipation per unit time; but also makes the heat dissipation area more matched with the heat generation area distributed along the length of the transformer, so as to achieve uniform heat dissipation of the transformer and avoid local overheating. (3) This utility model forms a spray cooling zone through the spray water pipeline and the spray head. The heat dissipation fins are sprayed with water to further enhance the heat dissipation capacity by utilizing the latent heat of vaporization of water, thus achieving triple heat dissipation of air cooling, self-cooling and water cooling. The spray head is set to correspond to the heat dissipation fins so that the water is accurately sprayed on the surface of the fins, maximizing the contact area between the water and the fins, improving the water cooling heat exchange efficiency, and further ensuring the heat dissipation safety under extreme working conditions. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 A schematic diagram of the structure of a transformer cooling device for a substation provided in this embodiment of the present utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 The diagram shows the structure of the transformer cooling device from a first-view perspective. Figure 4 for Figure 3 A cross-sectional view along the BB direction; Figure 5 for Figure 4 A magnified view of a section at point C; Figure 6 for Figure 4 A magnified view of a section at point D.

[0028] Explanation of reference numerals in the attached figures: 100. Transformer cooling device; 10. Transformer assembly; 11. Housing; 111. Housing space; 12. Magnetic core winding; 13. Grounding terminal; 20. Coolant tank; 30. Self-cooling circulation radiator; 31. Heat dissipation group; 311. Heat dissipation fins; 312. Air passage; 313. Circulation path; 32. Water inlet pipe; 33. Water return pipe; 34. Connecting ribs; 35. Spray water pipe; 36. Spray head; 37. Coolant circulation loop; 40. Fan; 50. Cooling control box. Detailed Implementation

[0029] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] See Figure 1 , Figure 1 This is a structural schematic diagram of a transformer cooling device for a substation, provided as an embodiment of the present invention; combined with Figures 2 to 6 Specifically, the transformer cooling device 100 includes: a transformer assembly 10, a coolant tank 20, a self-cooling circulation radiator 30, and a fan 40; the coolant tank 20 is located on the transformer assembly 10 and is connected to the transformer assembly 10; the self-cooling circulation radiator 30 is located on one side of the transformer assembly 10 and is connected to the transformer assembly 10, and is used to receive coolant to dissipate heat from the transformer assembly 10; the fan 40 is located on one side of the self-cooling circulation radiator 30, and the projection of the self-cooling circulation radiator 30 onto the grounding terminal 13 covers the fan 40, and the fan 40 outputs air energy to the self-cooling circulation radiator 30.

[0033] Furthermore, grounding terminal 13 is defined as the ground on which transformer assembly 10 is installed.

[0034] Furthermore, the self-cooling radiator 30 is fixed to one side of the transformer assembly 10 by a bracket.

[0035] Preferably, the coolant tank 20 is installed on the top of the transformer assembly 10, that is, on the side of the transformer assembly 10 away from the grounding terminal 13.

[0036] In accordance with the specific operating method, the coolant tank 20 is connected to the transformer assembly 10, thus the transformer assembly 10 is filled with coolant. When the transformer assembly 10 is working, it generates a large amount of heat, which is absorbed by the coolant. After absorbing heat, the density of the coolant decreases, causing it to flow upward within the transformer assembly 10 and then enter the self-cooling circulation radiator 30. The self-cooling circulation radiator 30 exchanges heat with the outside air through its own structure, thereby cooling the coolant. The cooled coolant then flows back into the transformer assembly 10 from the self-cooling circulation radiator, thus forming a closed coolant circulation loop 37. Furthermore, by installing a fan 40 below the self-cooling circulation radiator 30, the fan 40 outputs air energy to the self-cooling circulation radiator 30 during operation, forcibly accelerating the airflow on the surface of the self-cooling circulation radiator 30, further enhancing the heat exchange efficiency of the coolant in the self-cooling circulation radiator 30, thereby achieving forced air cooling.

[0037] For further information, please refer to [link / reference]. Figure 2 and Figure 3 The self-cooling circulation radiator 30 includes a heat dissipation group 31, which is located on one side of the transformer assembly 10 and is connected to the transformer assembly 10.

[0038] Specifically, the heat dissipation group 31 in the self-cooling circulation radiator 30 is installed on the transformer assembly 10 and communicates with the inside of the transformer assembly 10 so that the coolant flows from the transformer assembly 10 to the self-cooling circulation radiator 30. In addition, by designing the heat dissipation group 31 in a modular manner, the number or specifications of the heat dissipation group 31 can be flexibly adjusted according to the heat generation of the transformer assembly 10 to improve the adaptability of the self-cooling circulation radiator 30.

[0039] For further information, please refer to [link / reference]. Figure 2 and Figure 3 Multiple heat dissipation groups 31 are arranged along the length of the transformer assembly 10.

[0040] Optionally, there may be multiple heat dissipation assemblies 31, arranged around the transformer assembly 10.

[0041] Specifically, multiple heat dissipation groups 31 are set and arranged along the length of the transformer assembly 10, so that the heat dissipation provided by the heat dissipation group 31 can evenly cover the heat-generating area of ​​the transformer and achieve balanced heat dissipation.

[0042] For further information, please refer to [link / reference]. Figure 2 and Figure 4 The heat dissipation group 31 includes: multiple heat dissipation fins 311, which are arranged along the length of the transformer assembly 10, and an air passage 312 is formed between two adjacent heat dissipation fins 311; the projection of the air passage 312 covers the fan 40.

[0043] Specifically, the heat dissipation fins 311 are vertically arranged along the height of the transformer assembly 10. Multiple heat dissipation fins 311 are then arranged along the length of the transformer assembly 10 to form a heat dissipation group 31. Therefore, a gap exists between adjacent heat dissipation fins 311 arranged along the length of the transformer assembly 10, forming an airflow channel 312. Since the fan 40 is located below the heat dissipation group 31, its outlet faces the airflow channel 312. Therefore, the airflow from the fan 40 to the heat dissipation fins 311 passes through the airflow channel 312, increasing the airflow velocity between adjacent heat dissipation fins 311 and further accelerating the heat dissipation efficiency of the heat dissipation fins 311.

[0044] For further information, please refer to [link / reference]. Figure 4 The self-cooling circulation radiator 30 also includes: an inlet pipe 32 and a return pipe 33; the inlet pipe 32 is connected in series with multiple heat dissipation fins 311; the return pipe 33 is connected in series with multiple heat dissipation fins 311.

[0045] Preferably, the water inlet pipe 32 is located on the side of the heat dissipation fins 311 away from the grounding terminal 13.

[0046] Preferably, the return water pipe 33 is located on the side of the heat dissipation fin 311 near the grounding terminal 13.

[0047] Specifically, multiple heat dissipation fins 311 form a heat dissipation group 31. Therefore, each heat dissipation group 31 needs to be equipped with an inlet pipe 32 and a return pipe 33 that are connected to the heat dissipation fins 311. The inlet pipe 32 and the return pipe 33 are arranged opposite to each other on the heat dissipation fins 311. The density change of the coolant after absorbing heat and heating up is utilized. The inlet pipe 32 is located above the heat dissipation fins 311, and the return pipe 33 is located below the heat dissipation fins 311. The inlet pipe 32 is connected in series with the upper part of all the heat dissipation fins 311 in the heat dissipation group 31 to guide the coolant after absorbing heat and heating up into the heat dissipation fins 311. Similarly, the return pipe 33 is connected in series with the lower part of all the heat dissipation fins 311 so that the coolant after releasing heat can re-enter the transformer assembly 10.

[0048] For further information, please refer to [link / reference]. Figure 5 and Figure 6 The heat dissipation fins 311 are provided with a circulation path 313; one end of the water inlet pipe 32 is connected to the circulation path 313 and the other end is connected to the water inlet of the transformer assembly 10; one end of the water return pipe 33 is connected to the circulation path 313 and the other end is connected to the water return of the transformer assembly 10.

[0049] Specifically, each heat sink 311 has a circulation path 313 inside. One end of the water inlet pipe 32 is connected to the circulation path 313 above the heat sink 311, and the other end is connected to the water inlet of the high-temperature zone at the top of the transformer assembly 10. One end of the return water pipe 33 is connected to the circulation path 313 below the heat sink 311, and the other end is connected to the return water inlet at the bottom of the transformer assembly 10. This allows the coolant that has absorbed heat to enter the water inlet pipe 32 through the water inlet, and then enter the circulation path 313 along the water inlet pipe 32. After being heated in the circulation path 313, the coolant is returned to the transformer assembly 10 through the return water pipe 33 and the return water inlet at the bottom of the heat sink 311.

[0050] For further information, please refer to [link / reference]. Figure 4 The transformer assembly 10 includes: a housing 11 and a magnetic core winding 12; the housing 11 is provided with a receiving space 111, and the coolant tank 20 is connected to the receiving space 111; the water inlet and the water outlet are provided in the housing 11 and are connected to the receiving space 111; the magnetic core winding 12 is provided in the receiving space 111; the receiving space 111, the water inlet, the water inlet pipe 32, the circulation flow path 313, the water outlet pipe 33, and the water outlet together form a coolant circulation loop 37.

[0051] Specifically, the transformer assembly 10 includes a housing 11, which forms an internal space 111 for filling coolant and installing the magnetic core winding 12. The coolant tank 20 is connected to the space 111, with both the inlet and outlet located on the housing 11 and connected to the space 111. Thus, the space 111, the outlet, the inlet pipe, and the circulation path 313, return pipe 33, and return port within the heat dissipation fins 311 of the single heat dissipation unit 31 work together to form a coolant circulation path 313 driven by the thermosiphon effect. The space 111 within the housing 11 provides a place for the coolant to be stored and undergo preliminary heat exchange. The heat generated by the magnetic core winding 12 can be directly transferred to the coolant, achieving a short-distance transfer from heat generation to heat absorption. The coolant flows out from the inlet at the top of the housing 11, is cooled in the heat dissipation fins 311 through the inlet pipe 32, and then returns to the housing 11 through the return pipe 33 and the return port, completing the continuous heat transfer.

[0052] For further information, please refer to [link / reference]. Figure 2 The heat dissipation assembly 31 also includes a connecting rib 34, which is located on one side of the heat dissipation fins 311 and connects multiple heat dissipation fins 311.

[0053] Specifically, the connecting ribs 34 are set on the side of the heat dissipation fins 311 to connect multiple heat dissipation fins 311 into a whole, so as to avoid the heat dissipation fins 311 being deformed or misaligned due to coolant impact or wind force of the fan 40, and to ensure long-term operational reliability. Furthermore, the layout of the connecting ribs 34 on the side of the heat dissipation fins 311 does not affect the heat dissipation area of ​​the fins and the ventilation of the air passage 312, strengthening the structure without sacrificing heat dissipation performance.

[0054] For further information, please refer to [link / reference]. Figure 2 The self-cooling circulation radiator 30 also includes: a spray water pipe 35 and a spray head 36; the spray water pipe 35 is disposed on the heat dissipation fins 311; the spray head 36 is disposed on the spray water pipe 35 and is disposed corresponding to the heat dissipation fins 311; the spray water pipe 35 and the spray head 36 cooperate to form a spray cooling zone, and the heat dissipation fins 311 are located in the spray cooling zone.

[0055] Specifically, the spray water pipe 35 is mounted on the heat dissipation fins 311, and multiple spray heads 36 are spaced apart on the spray water pipe 35, with each spray head 36 spraying towards the heat dissipation fins 311. Therefore, the spray water pipe 35 and the spray heads 36 work together to form a spray cooling zone, and any heat dissipation unit 31 is located in the spray cooling zone. Under high-temperature conditions, cooling water is sprayed onto the heat dissipation fins 311 through the spray heads 36, and the heat dissipation is enhanced by the heat absorption of water. Combined with the air cooling of the fan 40 and the self-cooling of the self-cooling circulation radiator 30 mentioned above, a triple synergy is formed, further enhancing the cooling effect of the self-cooling circulation radiator 30.

[0056] For further information, please refer to [link / reference]. Figure 1 The transformer cooling device 100 also includes a cooling control box 50, which is located on one side of the transformer assembly 10 and is electrically connected to the self-cooling circulation radiator 30 and the fan 40.

[0057] Specifically, the cooling control box 50 is located on one side of the transformer assembly 10, and contains a controller, a temperature sensor, and a power control module. The cooling control box 50 is electrically connected to the self-cooling circulation radiator 30 and the fan 40 via cables. By monitoring the transformer temperature in real time, the cooling control box 50 can automatically control the start, stop, and speed of the fan 40, and even control the on / off of the spray system, achieving intelligent and energy-efficient heat dissipation management.

[0058] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A transformer cooling device for a substation, characterized in that, include: Transformer assembly (10); Coolant tank (20), the coolant tank (20) is disposed on the transformer assembly (10) and is connected to the transformer assembly (10); A self-cooling circulating radiator (30) is provided on one side of the transformer assembly (10) and is connected to the transformer assembly (10) for receiving coolant to dissipate heat from the transformer assembly (10). A fan (40) is located on one side of the self-cooling circulation radiator (30), and the projection of the self-cooling circulation radiator (30) toward the grounding end (13) covers the fan (40), and the fan (40) outputs wind energy to the self-cooling circulation radiator (30).

2. The transformer cooling device according to claim 1, characterized in that, The self-cooling circulation radiator (30) includes: Heat dissipation group (31) is located on one side of the transformer assembly (10) and is connected to the transformer assembly (10).

3. The transformer cooling device according to claim 2, characterized in that, There are multiple heat dissipation groups (31), which are arranged along the length of the transformer assembly (10).

4. The transformer cooling device according to claim 2 or 3, characterized in that, The heat dissipation assembly (31) includes: Multiple heat dissipation fins (311) are arranged along the length of the transformer assembly (10), and an air passage (312) is formed between two adjacent heat dissipation fins (311). The projection of the air passage (312) covers the fan (40).

5. The transformer cooling device according to claim 4, characterized in that, The self-cooling circulation radiator (30) also includes: an inlet pipe (32) and a return pipe (33). The water inlet pipe (32) is connected in series with multiple heat dissipation fins (311). The return water pipe (33) is connected in series with multiple heat dissipation fins (311).

6. The transformer cooling device according to claim 5, characterized in that, The heat dissipation fins (311) are provided with a circulation path (313). One end of the water inlet pipe (32) is connected to the circulation path (313), and the other end is connected to the water inlet of the transformer assembly (10); One end of the return water pipe (33) is connected to the circulation flow path (313), and the other end is connected to the return water port of the transformer assembly (10).

7. The transformer cooling device according to claim 6, characterized in that, The transformer assembly (10) includes: The housing (11) has a receiving space (111), and the coolant tank (20) is connected to the receiving space (111); The water inlet and the water outlet are located on the shell (11) and communicate with the accommodating space (111); A magnetic core winding (12) is provided in the receiving space (111). The accommodating space (111), the water inlet, the water inlet pipe (32), the circulation path (313), the return water pipe (33), and the return water inlet together form a coolant circulation loop (37).

8. The transformer cooling device according to claim 4, characterized in that, The heat dissipation assembly (31) also includes: A connecting rib (34) is provided on one side of the heat dissipation fins (311) and connects multiple heat dissipation fins (311).

9. The transformer cooling device according to any one of claims 5 to 7, characterized in that, The self-cooling circulation radiator (30) also includes: Spray water pipe (35), the spray water pipe (35) is provided on the heat dissipation fin (311). Spray head (36), the spray head (36) is provided on the spray water pipe (35) and is provided corresponding to the heat dissipation fins (311); The spray water pipe (35) and the spray head (36) work together to form a spray cooling zone, and the heat dissipation fins (311) are located in the spray cooling zone.

10. The transformer cooling device according to claim 1, characterized in that, Also includes: Cooling control box (50) is located on one side of the transformer assembly (10) and is electrically connected to the self-cooling circulation radiator (30) and the fan (40).

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