Transformer heat dissipation device

Abstract

The invention belongs to the technical field of transformers, and particularly relates to a transformer heat dissipation device which comprises a cabinet. A cabinet door is mounted on the cabinet; a transformer body is arranged in the cabinet; a mounting frame is mounted at the bottom of the transformer body, and the mounting frame is fixedly mounted in the cabinet; air inlets are formed in the three side surfaces, except the cabinet door, of the cabinet; filter screens are mounted in the three air inlets; an exhaust fan is mounted on the side wall of the cabinet above the transformer body, and the exhaust fan is used for exhausting gas in the cabinet; a heat dissipation mechanism is mounted on the outer ring of the transformer body, and the heat dissipation mechanism is used for dissipating heat of the transformer body; and by arranging the heat dissipation mechanism, heat dissipation can be conducted on the transformer body more comprehensively, and the situation that heat dissipation of the transformer body is not uniform is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, in particular to a transformer heat dissipation device. Background Art

[0002] A transformer is an important electrical device that uses the principle of electromagnetic induction to achieve electrical energy conversion and transmission. Its core operating mechanism is as follows: when the primary winding is connected to an AC power source, an alternating current flows through the winding, generating an alternating magnetic field. This magnetic field is transmitted through the iron core to the secondary winding, inducing an electromotive force in the secondary winding, achieving voltage conversion and electrical energy transmission. A transformer is primarily composed of an iron core, windings, and insulating materials. The iron core acts as a magnetic conductor, providing a path for electromagnetic induction. The windings are key components for electrical energy conversion and transmission and are divided into primary and secondary windings. The insulating material isolates conductors of different potentials, ensuring safe operation of the transformer.

[0003] With the continuous development of modern power systems, box-type transformers have gained widespread application in urban power grid transformation, industrial power supply, and residential power distribution due to their advantages such as small footprint, easy installation, and flexible configuration. However, during operation, box-type transformers generate a large amount of heat in their windings and core. If this heat cannot be dissipated promptly and effectively, the internal temperature of the transformer will continue to rise. Excessive temperatures not only accelerate the aging of the transformer's insulation material, degrading its insulation performance and shortening the transformer's service life, but can also cause electrical failures, impacting the safe and stable operation of the power system.

[0004] Air cooling is one method of dissipating heat from transformers. By installing a fan in the enclosure, forced air flows to remove heat generated by the transformer. Compared to natural cooling, air cooling significantly improves heat dissipation, allowing the transformer to withstand greater loads within the same volume.

[0005] However, when using air cooling to dissipate heat from the transformer, since the positions of the fan and the air inlet are fixed, the air entering the cabinet can only dissipate heat near the fan of the transformer and cannot dissipate heat throughout the transformer, resulting in uneven heat dissipation. Summary of the Invention

[0006] In order to make up for the shortcomings of the existing technology and solve the above technical problems, the present invention proposes a transformer heat dissipation device. By providing a heat dissipation mechanism, the transformer body can be dissipated more comprehensively to avoid uneven heat dissipation of the transformer body. The specific structure is as follows;

[0007] A transformer heat dissipation device includes a cabinet; a cabinet door is installed on the cabinet; a transformer body is arranged in the cabinet;

[0008] A mounting bracket is installed at the bottom of the transformer body, and the mounting bracket is fixedly installed in the cabinet;

[0009] The cabinet is provided with air inlets on three sides except the cabinet door; and filters are installed in the three air inlets;

[0010] An exhaust fan is installed on the side wall of the cabinet above the transformer body, and the exhaust fan is used to extract the gas in the cabinet;

[0011] The outer ring of the transformer body is equipped with a heat dissipation mechanism, and the heat dissipation mechanism is used to dissipate heat from the transformer body.

[0012] Preferably, the heat dissipation mechanism includes an annular bin;

[0013] The annular bin is fixedly installed in the cabinet, and the transformer body is located in the middle of the annular bin; the top of the annular bin is an open design;

[0014] The annular bin is rotatably connected to an annular plate at the top opening, and the inner ring of the annular plate extends downward and fits with the inner ring of the annular bin;

[0015] The inner surface of the annular plate is provided with evenly arranged tooth grooves; a motor is installed at the bottom of the cabinet; a gear is installed on the motor, and the gear is meshed with the tooth grooves provided on the inner surface of the annular plate;

[0016] Three air ducts are installed on the outer ring surface of the annular bin, and the sides of the air ducts away from the annular bin are connected to the air inlets respectively;

[0017] A fan is installed in each of the air ducts, and the fan is used to extract external gas; an air inlet slot is opened on the side of the annular warehouse close to the air duct, and the air inlet slot is connected to the air duct;

[0018] The top of the annular plate is provided with evenly arranged air outlets, and the air outlets are communicated with the inner space of the annular bin.

[0019] Preferably, the top of the annular plate is fixedly connected with evenly arranged air outlet tubes;

[0020] The top of the air outlet is closed; the air outlet is connected to the air outlet;

[0021] The air outlet tube is provided with evenly arranged spray holes on one side facing the transformer body, and the spray holes are inclined toward the transformer body.

[0022] Preferably, three compartments are fixedly connected in the annular compartment;

[0023] The three air inlet slots are respectively located in the three compartments and are connected to the compartments; a U-shaped tube is installed at the bottom of the compartment, and the U-shaped tube passes through the annular compartment and the bottom of the cabinet and is buried in the soil layer;

[0024] The U-shaped tube is provided with two openings, one of which is located in the compartment and the other is located in the annular compartment outside the compartment; the two openings of the U-shaped tube are flush with the bottom surface of the compartment inner cavity.

[0025] Preferably, a top plate is slidably connected to the compartment, and the top plate is in contact with the inner surface of the compartment;

[0026] A connecting groove is provided on the side wall of the compartment above the top plate, and the space above the top plate is connected to the space in the annular compartment through the connecting groove;

[0027] An electric telescopic rod is installed at the bottom of the compartment, and the extension rod of the electric telescopic rod extends to one side of the top plate and is fixedly connected to the top plate.

[0028] Preferably, a long tube is provided under each of the U-shaped tubes, and the long tubes are buried in the soil layer;

[0029] The U-shaped tubes all extend into the long cylinder; a conduit is installed on each of the long cylinders, and the other side of the conduit extends into the interior of the cabinet and is located on the bottom plate at the bottom of the cabinet, and coolant can be added to the long cylinder through the conduit.

[0030] Preferably,

[0031] A stirring plate is fixedly connected to the outer ring surface of each air outlet tube.

[0032] Preferably, a sealing layer is provided on one side of the annular plate rotating at the opening of the annular bin.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1. The transformer heat dissipation device described in the present invention first draws gas into the annular bin and then controls the annular plate to rotate along the annular bin. Therefore, the gas in the annular bin will be discharged through the nozzle holes on the air outlet duct. At the same time, the air outlet duct can be made to blow air while rotating along the transformer body, so that the transformer body can be cooled more comprehensively. At the same time, since the air outlet duct has a certain height, the ejected gas can act on positions at different heights of the transformer body, so that the transformer body can be cooled more comprehensively, thereby avoiding the existing method of only cooling a local position of the transformer body, resulting in uneven heat dissipation of the transformer body.

[0035] 2. The transformer heat dissipation device described in the present invention, when the transformer body is used in summer, by introducing gas into a U-shaped tube of coolant, the coolant will absorb the heat of the passing gas, and the coolant itself will exchange heat with the surrounding soil, so that the passing gas can be continuously dissipated. When the dissipated gas is sprayed on the transformer body, the heat dissipation effect of the transformer body can be improved. When the transformer body is used in summer, the extracted gas can be dissipated, thereby avoiding the situation where the gas entering the cabinet is still hot due to a certain temperature of the outside world, thereby reducing the heat dissipation effect of the transformer body, causing the transformer body to be in a high-temperature working state for a long time, and being prone to damage.

[0036] 3. The transformer heat dissipation device described in the present invention, when the transformer body is used in winter, if there is no need to use coolant to cool the gas, the electric telescopic rod can be controlled to retract, and the retracted electric telescopic rod will pull the top plate to gradually slide downward in the partition, and the downward sliding top plate will gradually pass through the air inlet slot. When the bottom end face of the top plate is in contact with the bottom end face of the partition, the top plate is located below the air inlet slot, and the air inlet slot is connected to the space above the top plate, and at the same time, the top plate will seal the opening of the U-shaped tube in the partition, so when the gas is extracted again, the gas will enter the space above the top plate through the air inlet slot, and then the gas will enter the annular bin through the connecting slot, and the gas entering the annular bin will act on the transformer body through the air outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings.

[0038] Figure 1 It is a perspective view of the present invention as a whole;

[0039] Figure 2 It is the internal structure diagram of the cabinet of the present invention;

[0040] Figure 3 This invention Figure 2 A partial enlarged view of the middle part;

[0041] Figure 4 This is a diagram showing the separation structure of the heat dissipation mechanism and the transformer body in the present invention;

[0042] Figure 5 This invention Figure 4 A partial enlarged view of point B in the middle;

[0043] Figure 6 is a top view of the cabinet of the present invention;

[0044] Figure 7 This invention Figure 6 A partial enlarged view of the middle CC;

[0045] Figure 8 This invention Figure 7 A partial enlarged view of point D in the middle;

[0046] Figure 9 This invention Figure 7 A partial enlarged view of point E in the middle.

[0047] In the figure: 1. Cabinet; 11. Transformer body; 12. Mounting frame; 13. Air inlet; 14. Filter; 15. Exhaust fan; 16. Motor; 17. Gear; 2. Annular bin; 21. Annular plate; 22. Tooth groove; 23. Air duct; 24. Fan; 25. Air inlet slot; 26. Air outlet; 3. Air outlet tube; 31. Spray hole; 32. Stirring plate; 4. Partition; 41. U-shaped tube; 42. Top plate; 43. Connecting slot; 44. Electric telescopic rod; 45. Long tube; 46. Conduit. DETAILED DESCRIPTION

[0048] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0049] Example 1:

[0050] like Figures 1 to 9 As shown, a transformer heat dissipation device according to the present invention includes a cabinet 1; a cabinet door is installed on the cabinet 1; a transformer body 11 is arranged in the cabinet 1;

[0051] A mounting bracket 12 is installed at the bottom of the transformer body 11, and the mounting bracket 12 is fixedly installed in the cabinet 1;

[0052] The cabinet 1 is provided with air inlets 13 on three sides except the cabinet door; filters 14 are installed in the three air inlets 13;

[0053] An exhaust fan 15 is installed on the side wall of the cabinet 1 above the transformer body 11, and the exhaust fan 15 is used to extract the gas in the cabinet 1;

[0054] The outer ring of the transformer body 11 is provided with a heat dissipation mechanism, and the heat dissipation mechanism is used to dissipate heat from the transformer body 11;

[0055] In this embodiment, the heat dissipation mechanism includes an annular chamber 2;

[0056] The annular bin 2 is fixedly installed in the cabinet 1, and the transformer body 11 is located in the middle of the annular bin 2; the top of the annular bin 2 is an open design;

[0057] The annular plate 21 is rotatably connected to the top opening of the annular bin 2, and the inner circle of the annular plate 21 extends downward and fits with the inner circle of the annular bin 2;

[0058] The inner surface of the annular plate 21 is provided with evenly arranged tooth grooves 22; a motor 16 is installed at the bottom of the cabinet 1; a gear 17 is installed on the motor 16, and the gear 17 is engaged with the tooth grooves 22 provided on the inner surface of the annular plate 21;

[0059] Three air ducts 23 are installed on the outer surface of the annular bin 2, and the sides of the air ducts 23 away from the annular bin 2 are connected to the air inlet 13 respectively;

[0060] A fan 24 is installed in each of the air ducts 23, and the fan 24 is used to extract external gas; an air inlet slot 25 is opened on one side of the annular warehouse 2 close to the air duct 23, and the air inlet slot 25 is connected to the air duct 23;

[0061] The top of the annular plate 21 is provided with evenly arranged air outlets 26, and the air outlets 26 are connected to the inner space of the annular bin 2;

[0062] In this embodiment, the top of the annular plate 21 is fixedly connected with evenly arranged air outlet tubes 3;

[0063] The top of the air outlet 3 is closed; the air outlet 3 is connected to the air outlet 26;

[0064] The air outlet 3 is provided with evenly arranged spray holes 31 on one side facing the transformer body 11, and the spray holes 31 are inclined toward the transformer body 11;

[0065] Specifically, when the transformer body 11 is cooled, the exhaust fan 15 and the blower 24 are first controlled to work. When the blower 24 is working, the external air is drawn into the air duct 23 through the air inlet 13. The air entering the air duct 23 will first pass through the filter 14 provided in the air inlet 13. The filter 14 will filter the air entering the air duct 23 to prevent external debris from entering the air duct 23. After the air enters the air duct 23, it will enter the annular bin 2 through the air inlet slot 25. Since the top of the annular bin 2 is rotatably connected to the annular plate 21, the gas entering the annular bin 2 will first be stored in the annular bin 2. When the gas in the annular bin 2 gradually increases, the gas will be discharged through the air outlet 26, thereby dissipating heat to the outer ring of the transformer body 11.

[0066] More specifically, since the tooth grooves 22 provided on the inner ring of the annular plate 21 mesh with the gear 17, when the transformer body 11 is cooling, the motor 16 is controlled to rotate, and the rotating motor 16 drives the gear 17 to rotate. At the same time, the gear 17 drives the annular plate 21 to rotate. The rotating annular plate 21 rotates along the annular bin 2. At the same time, the air outlet 26 provided on the annular plate 21 rotates along with the annular plate 21. Therefore, the gas flowing out of the air outlet 26 also rotates along the transformer body 11, thereby blowing the outer ring of the transformer body 11, thereby removing the heat from the transformer body 11.

[0067] Furthermore, since the air outlet 3 fixedly connected to the annular plate 21 is connected to the air outlet 26, the gas flowing out of the air outlet 26 will enter the air outlet 3. Since the air outlet 3 is provided with uniformly arranged spray holes 31, the gas will be sprayed out from each spray hole 31 and act on the surface of the transformer body 11, thereby dissipating heat from the surface of the transformer body 11. At the same time, since the air outlet 3 has a certain height, the gas sprayed from the multiple spray holes 31 can act on positions at different heights of the transformer body 11. At the same time, the air outlet 3 rotates cyclically with the annular plate 21, so that the air outlet 3 can blow air while rotating along the transformer body 11, thereby dissipating heat from the transformer body 11 more comprehensively. After the gas passes through the transformer body 11, it will absorb the heat from the transformer body 11. When the exhaust fan 15 is working, the gas that has absorbed heat can be discharged, so that the gas circulates in the cabinet 1 to dissipate heat from the transformer body 11.

[0068] Furthermore, by first drawing the gas into the annular bin 2 and then controlling the annular plate 21 to rotate along the annular bin 2, the gas in the annular bin 2 will be discharged through the nozzle 31 on the air outlet 3. At the same time, the air outlet 3 can be made to blow air while rotating along the transformer body 11, so that the transformer body 11 can be cooled more comprehensively. At the same time, since the air outlet 3 has a certain height, the ejected gas can act on positions at different heights of the transformer body 11, so that the transformer body 11 can be cooled more comprehensively, thereby avoiding the existing situation where only local positions of the transformer body 11 can be cooled, resulting in uneven cooling of the transformer body 11.

[0069] Example 2:

[0070] Three partition chambers 4 are fixedly connected in the annular chamber 2;

[0071] The three air inlet slots 25 are respectively located in the three compartments 4 and are connected to the compartments 4; a U-shaped tube 41 is installed at the bottom of the compartment 4, and the U-shaped tube 41 passes through the annular compartment 2 and the bottom of the cabinet 1 and is buried in the soil layer;

[0072] The U-shaped tube 41 is provided with two openings, one of which is located inside the compartment 4 and the other is located inside the annular compartment 2 outside the compartment 4; both openings of the U-shaped tube 41 are flush with the bottom surface of the inner cavity of the compartment 4;

[0073] In this embodiment, a top plate 42 is slidably connected to the compartment 4, and the top plate 42 is in contact with the inner surface of the compartment 4;

[0074] A connecting groove 43 is provided on the side wall of the compartment 4 above the top plate 42, and the space above the top plate 42 is connected to the space in the annular compartment 2 through the connecting groove 43;

[0075] An electric telescopic rod 44 is installed at the bottom of the compartment 4, and the extension rod of the electric telescopic rod 44 extends to one side of the top plate 42 and is fixed to the top plate 42;

[0076] In this embodiment, a long tube 45 is provided below each of the U-shaped tubes 41, and the long tubes 45 are buried in the soil layer;

[0077] The U-shaped tubes 41 extend into the long tubes 45; a conduit 46 is installed on each of the long tubes 45, and the other side of the conduit 46 extends into the interior of the cabinet 1 and is located on the bottom plate of the cabinet 1, and coolant can be added to the long tubes 45 through the conduit 46;

[0078] Specifically, since the air inlet slot 25 is located in the compartment 4, when the fan 24 extracts gas, the gas will first enter the compartment 4. Since a top plate 42 slides on the top of the compartment 4, it can prevent the gas from flowing upward. When the gas gradually fills the compartment 4, the gas will enter the U-shaped tube 41 from the opening of the U-shaped tube 41, and then the gas will flow along the U-shaped tube 41. Since the U-shaped tube 41 is buried underground and the temperature underground is lower than the temperature of the surface, when the gas flows in the U-shaped tube 41, it will exchange heat with the soil, thereby reducing the temperature of the gas. When the gas flows out from another opening of the U-shaped tube 41, the gas will enter the annular compartment 2, and then the gas will be sprayed onto the transformer body 11 through the nozzle 31 on the air outlet tube 3, thereby dissipating heat from the transformer body 11.

[0079] More specifically, since the U-shaped tube 41 partially extends into the long tube 45 filled with coolant, the coolant in the long tube 45 can continuously exchange heat with the surrounding soil, thereby keeping the coolant at a lower temperature. When the gas passes through the U-shaped tube 41, the coolant has a lower temperature and a higher specific heat capacity, so it can absorb the heat of the gas in the U-shaped tube 41. At the same time, since the coolant is located in the soil layer, it can continuously exchange heat with the surrounding soil, thereby ensuring that the coolant is at a lower temperature. After the gas passes through the U-shaped tube 41 and the long tube 45, the temperature of the gas can be further reduced. Since the conduit 46 fixed to the long tube 45 extends into the interior of the cabinet 1, the coolant can be added to the long tube 45 through the conduit 46.

[0080] During this process, when the transformer body 11 is used in the summer, by introducing the gas into the U-shaped tube 41 of the coolant, the coolant absorbs the heat of the passing gas, and the coolant itself performs heat exchange with the surrounding soil, thereby continuously dissipating heat to the passing gas. When the dissipated gas is sprayed on the transformer body 11, the heat dissipation effect of the transformer body 11 can be improved. When the transformer body 11 is used in the summer, the extracted gas can be dissipated, thereby avoiding the situation where the gas entering the cabinet 1 is still hot due to a certain temperature of the outside world, thereby reducing the heat dissipation effect of the transformer body 11, causing the transformer body 11 to be in a high-temperature working state for a long time, which is prone to damage.

[0081] Furthermore, when the transformer body 11 is used in winter, if there is no need to use coolant to cool the gas, the electric telescopic rod 44 can be controlled to retract. The retracted electric telescopic rod 44 will pull the top plate 42 to gradually slide downward in the partition 4, and the downward sliding top plate 42 will gradually pass through the air inlet groove 25. When the bottom end face of the top plate 42 is in contact with the bottom end face of the partition 4, the top plate 42 is located below the air inlet groove 25, and the air inlet groove 25 will be connected to the space above the top plate 42. At the same time, the top plate 42 will block the opening of the U-shaped tube 41 in the partition 4. Therefore, when the gas is extracted again, the gas will enter the space above the top plate 42 through the air inlet groove 25, and then the gas will enter the annular bin 2 through the connecting groove 43. The gas entering the annular bin 2 will act on the transformer body 11 through the air outlet tube 3.

[0082] Example 3:

[0083] Each of the air outlet tubes 3 is fixedly connected to a stirring plate 32 on its outer surface;

[0084] In this embodiment, a sealing layer is provided on one side of the annular plate 21 rotating at the opening of the annular bin 2;

[0085] Specifically, since the outer ring surface of the air outlet 3 is fixedly connected with the stirring plate 32, when the air outlet 3 rotates, the stirring plate 32 will be driven to rotate, and the rotating stirring plate 32 will stir the airflow, and the stirred airflow will flow along the transformer body 11, so that the gas can be more fully in contact with the transformer body 11, thereby fully dissipating heat from the transformer body 11;

[0086] More specifically, since a sealing layer is installed on one side of the annular plate 21 at the opening of the annular chamber 2 when the annular plate 21 rotates, gas can be prevented from flowing out of the gap between the annular plate 21 and the opening of the annular chamber 2 .

[0087] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0088] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer heat dissipation device, characterized in that: The invention comprises a cabinet (1); a cabinet door is installed on the cabinet (1); a transformer body (11) is arranged in the cabinet (1); A mounting frame (12) is installed at the bottom of the transformer body (11), and the mounting frame (12) is fixedly installed in the cabinet (1); The cabinet (1) is provided with air inlets (13) on three sides except the cabinet door; and filters (14) are installed in the three air inlets (13); An exhaust fan (15) is installed on the side wall of the cabinet (1) above the transformer body (11), and the exhaust fan (15) is used to extract gas from the cabinet (1); The outer ring of the transformer body (11) is provided with a heat dissipation mechanism, and the heat dissipation mechanism is used to dissipate heat from the transformer body (11).

2. A transformer heat dissipation device according to claim 1, characterized in that: The heat dissipation mechanism comprises an annular bin (2); The annular bin (2) is fixedly installed in the cabinet (1), and the transformer body (11) is located in the middle of the annular bin (2); the top of the annular bin (2) is of open design; The annular bin (2) is rotatably connected to the top opening of the annular bin (2), and the inner ring of the annular plate (21) extends downward and fits with the inner ring of the annular bin (2); The inner surface of the annular plate (21) is provided with tooth grooves (22) arranged evenly; a motor (16) is installed at the bottom of the cabinet (1); a gear (17) is installed on the motor (16), and the gear (17) is meshed with the tooth grooves (22) provided on the inner surface of the annular plate (21); Three air ducts (23) are installed on the outer surface of the annular bin (2), and the sides of the air ducts (23) away from the annular bin (2) are respectively connected to the air inlets (13); A fan (24) is installed in each of the air ducts (23), and the fan (24) is used to extract external gas; an air inlet groove (25) is opened on one side of the annular warehouse (2) close to the air duct (23), and the air inlet groove (25) is connected to the air duct (23); The top of the annular plate (21) is provided with evenly arranged air outlets (26), and the air outlets (26) are communicated with the internal space of the annular bin (2).

3. The transformer heat dissipation device according to claim 2, characterized in that: The top of the annular plate (21) is fixedly connected with evenly arranged air outlet tubes (3); The top of the air outlet duct (3) is closed; the air outlet duct (3) is connected to the air outlet (26); The air outlet cylinder (3) is provided with evenly arranged spray holes (31) on one side facing the transformer body (11), and the spray holes (31) are inclined toward the transformer body (11).

4. A transformer heat dissipation device according to claim 3, characterized in that: Three partition chambers (4) are fixedly connected in the annular chamber (2); The three air inlet slots (25) are respectively located in the three compartments (4) and are in communication with the compartments (4); a U-shaped tube (41) is installed at the bottom of the compartment (4), and the U-shaped tube (41) passes through the annular compartment (2) and the bottom of the cabinet (1) and is buried in the soil layer; The U-shaped tube (41) is provided with two openings, one of which is located in the compartment (4) and the other is located in the annular compartment (2) outside the compartment (4); both openings of the U-shaped tube (41) are flush with the bottom surface of the inner cavity of the compartment (4).

5. The transformer heat dissipation device according to claim 4, characterized in that: A top plate (42) is slidably connected to the compartment (4), and the top plate (42) is in contact with the inner surface of the compartment (4); A communication groove (43) is provided on the side wall of the partition chamber (4) above the top plate (42), and the space above the top plate (42) is connected to the space in the annular chamber (2) through the communication groove (43); An electric telescopic rod (44) is installed at the bottom of the compartment (4), and the extension rod of the electric telescopic rod (44) extends to one side of the top plate (42) and is fixedly connected to the top plate (42).

6. The transformer heat dissipation device according to claim 5, characterized in that: A long tube (45) is provided below each of the U-shaped tubes (41), and the long tubes (45) are buried in the soil layer; The U-shaped tubes (41) extend into the long cylinder (45); a conduit (46) is installed on each of the long cylinders (45), and the other side of the conduit (46) extends into the interior of the cabinet (1) and is located on the bottom plate of the cabinet (1), and coolant can be added into the long cylinder (45) through the conduit (46).

7. The transformer heat dissipation device according to claim 6, characterized in that: A stirring plate (32) is fixedly connected to the outer ring surface of each air outlet tube (3).

8. The transformer heat dissipation device according to claim 7, characterized in that: A sealing layer is provided on one side of the annular plate (21) rotating at the opening of the annular bin (2).

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