A high heat dissipation dry-type transformer

Abstract

This invention relates to the field of transformer technology, specifically to a high-heat-dissipation dry-type transformer, comprising a base, several windings disposed at the top of the base, and an upper frame fixed to the top of the windings. Through the coordinated design of the air guide shroud, exhaust shroud, and air guide assembly, the airflow output from the bottom cooling fan can be guided and homogenized, allowing the cooling gas to form a complete circumferential airflow field along the outer surface of the windings. This eliminates the airflow blind spots of traditional heat dissipation, allowing the cold air to make all-round, dead-angle-free contact with the outer wall of the windings, thereby completely removing the heat from the outer wall of the windings and achieving sufficient and uniform heat dissipation of the windings. This solves the core problem of insufficient heat dissipation in transformer manufacturing, improves the heat exchange efficiency of transformer products, and ensures the long-term stable operation of the transformer. At the same time, when the transformer as a whole does not require air guide assembly for heat dissipation, the openings of the air guide shroud and exhaust shroud can be automatically closed to prevent impurities or insects from entering the interior of the air guide duct.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a high-heat-dissipation dry-type transformer. Background Technology

[0002] In the transformer manufacturing process, dry-type transformers are widely used in local lighting, high-rise buildings, airports and other places because their core and windings are not immersed in insulating oil. Their heat dissipation performance directly determines the service life and safety stability of the transformer products.

[0003] In existing transformer manufacturing, the cooling methods for dry-type transformers are divided into natural air cooling and forced air cooling. Forced air cooling involves installing cooling fans on the front and rear sides below the windings and using these fans to directly blow away the heat from the outer walls of the windings, thereby accelerating the airflow outside the windings and achieving heat dissipation.

[0004] However, this type of transformer has obvious design flaws: the cooling fans at the bottom of existing dry-type transformers are mainly located on the front and rear sides below the windings. The cold air blown by them can only cover the front and rear areas of the outer wall of the windings. Due to the limited installation position, the outer walls on the left and right sides of the windings are in the range not reached by the airflow, which means that the cold air cannot make full contact with the outer wall of the windings. This means that the heat of the outer wall of the windings cannot be completely removed, resulting in insufficient and uneven heat dissipation of the windings, which ultimately affects the heat dissipation effect and makes it impossible to achieve efficient heat dissipation. Summary of the Invention

[0005] The purpose of this invention is to provide a high-heat-dissipation dry-type transformer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-heat-dissipation dry-type transformer, comprising a base, a plurality of windings disposed at the top of the base, and an upper frame fixed to the top of the plurality of windings. Temperature sensors are fixedly installed inside the upper frame on the side near the plurality of windings. A cooling fan is disposed at the bottom of each winding, and the bottom of the cooling fan is fixedly installed outside the top of the base. A fixed plate is fixedly installed at the bottom of each winding. Support frames are fixedly installed at both edges of the fixed plate, and the bottoms of the support frames are fixedly installed outside the top of the base. An air guide assembly is disposed at the bottom edge of each winding, and a cleaning assembly is disposed outside each winding. The air guide assembly includes a plurality of air guide pipes, an electric telescopic rod, and a ring frame. The plurality of air guide pipes are fixedly installed at equal angles around the outer edge of the fixed plate. The electric telescopic rod is fixedly installed at the bottom center of the fixed plate, and a ring frame is fixedly installed at the bottom of the output end of the electric telescopic rod. A spraying assembly is disposed inside one side of each air guide pipe.

[0007] Furthermore, several of the air guide pipes are L-shaped, and an air guide cover is fixedly installed through one end of each air guide pipe near the electric telescopic rod. A first rotating shaft and a second rotating shaft are symmetrically and rotatably installed inside the side of the air guide cover away from the air guide pipe. A small gear is fixedly installed on the outside of one end of the first rotating shaft, and a large gear is fixedly installed on the outside of one end of the second rotating shaft. The small gear and the large gear are meshed and connected.

[0008] Furthermore, a rack is longitudinally meshed on one side of the large gear, one end of the rack is fixedly installed on the outside of one side of the ring frame, and two first rotating plates are symmetrically arranged on the outside of one side of the air guide shroud. One end of the two first rotating plates is fixedly installed on one side of the first rotating shaft and the second rotating shaft, respectively, and a first elastic connecting belt is fixedly installed between the inner walls on both sides of the two first rotating plates.

[0009] Furthermore, an exhaust hood is fixedly installed through the top of each of the air ducts. Two rotating rods are symmetrically installed through the inside of the exhaust hood on the side away from the air duct. Two second rotating plates are symmetrically arranged on the outside of one side of the exhaust hood. One end of each of the two second rotating plates is fixedly installed outside a rotating rod on the corresponding side. A second elastic connecting strip is fixedly installed between the inner walls of the two sides of the two second rotating plates.

[0010] Furthermore, a fixed base is fixedly installed on the outside of one end of each of the two rotating rods, and a tension spring is fixedly connected between the two fixed bases.

[0011] Furthermore, the cleaning assembly includes a fixed frame and a reciprocating screw. The fixed frame is fixedly installed on the outside of the top side of the base near the fixed plate. The reciprocating screw is longitudinally rotatably installed on the outside of the bottom side of the upper frame. The bottom end of the reciprocating screw is rotatably installed inside the fixed frame on one side. A second engagement plate is fixedly installed on the bottom end of the reciprocating screw.

[0012] Furthermore, a first sprocket is fixedly installed at the top of the output shaft of the refrigeration fan, a positioning frame is fixedly installed on the side of the refrigeration fan housing near the positioning frame, a hollow rod is rotatably engaged and penetrated inside the positioning frame near the reciprocating lead screw, the hollow rod and the reciprocating lead screw are longitudinally coaxial, a second sprocket is fixedly installed through and through one side of the hollow rod, a chain is sleeved between the first sprocket and the second sprocket for transmission connection, a moving rod is slidably installed longitudinally through the interior of the hollow rod, a support frame is rotatably engaged and penetrated at the top of the moving rod, and one end of the support frame is fixedly installed on the outside of one side of the ring frame.

[0013] Furthermore, a first engagement disc is fixedly installed at the top of the moving rod, and a wiping ring is threadedly connected to the outside of one side of the reciprocating screw. The wiping ring is threadedly fitted to the outside of the winding on the corresponding side. A guide rod is slidably connected longitudinally through the inside of the wiping ring on the side away from the reciprocating screw. The two ends of the guide rod are respectively fixedly installed on one side of the base and the upper frame.

[0014] Furthermore, the spraying assembly includes an annular nozzle pipe and an abutment block. The annular nozzle pipe is fixedly installed inside one side of the corresponding air guide pipe. The abutment block is rotatably engaged and installed outside the bottom side of the moving rod. An auxiliary rod is slidably installed inside one side of the abutment block. The top end of the auxiliary rod is fixedly installed outside the bottom side of the positioning frame.

[0015] Furthermore, a fixed guide tube is fixedly installed inside one side of the positioning frame, and a pressing valve is fixedly installed through the side of the fixed guide tube near the contact block. The pressing end of the pressing valve is located on the side facing the top of the contact block, and the output end of the fixed guide tube is fixedly installed through the side of the annular nozzle pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the coordinated design of the air guide hood, exhaust hood, and air guide components, the airflow output from the bottom cooling fan can be guided and homogenized, so that the cooling gas forms a complete circumferential airflow field along the outer surface of the winding. This eliminates the airflow blind spots of traditional heat dissipation, allowing the cold air to make all-round, dead-angle-free contact with the outer wall of the winding, significantly improving the integrity of heat exchange. This allows the heat from the outer wall of the winding to be completely removed, achieving sufficient and uniform heat dissipation of the winding. This solves the core problem of insufficient heat dissipation in transformer manufacturing, improves the heat exchange efficiency of transformer products, and ensures the long-term stable operation of the transformer. At the same time, through the setting of the circular frame, the first rotating plate, and the second rotating plate, the openings of the air guide hood and exhaust hood can be automatically closed when the overall air guide components are not needed for heat dissipation. This prevents impurities or insects from entering the interior of the air guide pipe and causing blockage, significantly extending the fault-free operation cycle of the equipment and providing a solid guarantee for the continuous and efficient operation of the transformer.

[0018] 2. When the air guide component is running, it triggers the cleaning component and the spraying component to operate synchronously. The cleaning component reciprocates to wipe and clean the outer wall of the winding, effectively removing the dust layer accumulated on the surface and allowing the metal surface of the winding to directly contact the airflow, significantly improving the heat exchange rate. At the same time, the spraying component fills the interior of the air guide with highly inert gas, which mixes with the passing gas. The addition of inert gas improves the thermal conductivity of the mixed airflow, enhances the convective heat transfer effect, and forms a thinner airflow boundary layer on the winding surface, accelerating heat transfer and thus improving the overall heat dissipation effect, achieving efficient heat dissipation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the mounting frame and guide rod of the present invention;

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a bottom-view three-dimensional structural diagram of the electric telescopic rod and the circular frame of the present invention;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0024] Figure 6 This is a three-dimensional structural diagram of the air duct and exhaust hood of the present invention;

[0025] Figure 7 for Figure 6 Enlarged structural diagram at point C;

[0026] Figure 8 for Figure 6 Enlarged structural diagram at point D;

[0027] Figure 9 A schematic diagram illustrating how the air duct guides the gas blown out of the refrigeration fan to the outer circumference of the winding.

[0028] Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram of the fixing frame and reciprocating lead screw of the present invention;

[0029] Figure 11 for Figure 10 Enlarged structural diagram at point E;

[0030] Figure 12 This is a partial cross-sectional three-dimensional structural schematic diagram of the refrigeration fan and positioning frame of the present invention;

[0031] Figure 13 for Figure 12 Enlarged structural diagram at point F;

[0032] Figure 14 for Figure 12 Enlarged structural diagram at point G in the middle.

[0033] The components represented by each number in the attached diagram are listed below: 1. Base; 2. Upper frame; 3. Winding; 4. Fixing plate; 5. Support frame; 6. Refrigeration fan; 7. Air duct; 8. Electric telescopic rod; 9. Ring frame; 10. Air guide cover; 11. Exhaust cover; 12. First rotating shaft; 13. Pinion; 14. Second rotating shaft; 15. Large gear; 16. Rack; 17. First rotating plate; 18. First elastic connecting belt; 19. Rotating rod; 20. Second rotating plate; 2 1. Second elastic connecting belt; 22. Fixed seat; 23. Tension spring; 24. First sprocket; 25. Fixed frame; 26. Reciprocating screw; 27. Positioning frame; 28. Hollow rod; 29. ​​Second sprocket; 30. Chain; 31. Moving rod; 32. Support frame; 33. First engagement plate; 34. Second engagement plate; 35. Wiping ring; 36. Guide rod; 37. Annular nozzle pipe; 38. Abutment block; 39. Auxiliary rod; 40. Fixed guide tube; 41. Press valve. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1 - Figure 9 A high-heat-dissipation dry-type transformer includes a base 1, several windings 3 disposed at the top of the base 1, and an upper frame 2 fixed to the top of the windings 3. Temperature sensors are fixedly installed inside the upper frame 2 on the side near the windings 3. A cooling fan 6 is disposed at the bottom of each winding 3. The bottom of the cooling fan 6 is fixedly installed on the outside of the top of the base 1. A fixed plate 4 is fixedly installed at the bottom of each winding 3. Support frames 5 are fixedly installed on both sides of the fixed plate 4. The bottom of the support frames 5 is fixedly installed on the outside of the top of the base 1. An air guide assembly is disposed at the bottom edge of each winding 3. The air guide assembly includes several air guide pipes 7, an electric telescopic rod 8, and a ring frame 9. The several air guide pipes 7 are fixedly installed at equal angles around the outer edge of the fixed plate 4. The electric telescopic rod 8 is fixedly installed in the middle of the bottom of the fixed plate 4. The ring frame 9 is fixedly installed at the bottom of the output end of the electric telescopic rod 8.

[0036] All air ducts 7 are L-shaped. Each air duct 7 has an air guide cover 10 fixedly installed at one end near the electric telescopic rod 8. The air guide cover 10 has a first rotating shaft 12 and a second rotating shaft 14 symmetrically installed inside the side away from the air duct 7. A small gear 13 is fixedly installed on the outside of one end of the first rotating shaft 12, and a large gear 15 is fixedly installed on the outside of one end of the second rotating shaft 14. The small gear 13 and the large gear 15 are meshed and connected.

[0037] A rack 16 is longitudinally meshed on one side of the large gear 15. One end of the rack 16 is fixedly installed on the outside of one side of the ring frame 9. Two first rotating plates 17 are symmetrically arranged on the outside of one side of the air guide shroud 10. One end of the two first rotating plates 17 is fixedly installed on one side of the first rotating shaft 12 and the second rotating shaft 14, respectively. A first elastic connecting strip 18 is fixedly installed between the inner walls on both sides of the two first rotating plates 17.

[0038] Each air duct 7 has an exhaust hood 11 fixedly installed at its top end. Two rotating rods 19 are symmetrically installed inside the exhaust hood 11 on the side away from the air duct 7. Two second rotating plates 20 are symmetrically arranged on the outside of one side of the exhaust hood 11. One end of each of the two second rotating plates 20 is fixedly installed outside a rotating rod 19 on the corresponding side. A second elastic connecting strip 21 is fixedly installed between the inner walls of the two sides of the two second rotating plates 20.

[0039] Each of the two rotating rods 19 has a fixed base 22 fixedly installed on one end of its exterior, and a tension spring 23 is fixedly connected between the two fixed bases 22.

[0040] In this embodiment, when the transformer is operating normally and the temperature of winding 3 is within a safe range, the air guide assembly remains initially closed. At this time, the electric telescopic rod 8 is in the retracted state, and the cooling fan 6 maintains basic air supply. However, because the air guide cover 10 is closed, the airflow only flows naturally between the base 1 and the fixed plate 4 and does not enter the interior of the air guide duct 7.

[0041] In practical applications of transformer manufacturing, when the operating temperature of winding 3 exceeds a set threshold, the temperature sensor inside the upper frame 2 sends a signal. After receiving the signal, the electric telescopic rod 8 retracts its output end, driving the circular frame 9 to move upward longitudinally. The circular frame 9 drives the rack 16 on one side to move upward synchronously. The rack 16 meshes with the large gear 15, causing the large gear 15 to drive the second rotating shaft 14 to rotate at a certain angle. At the same time, the large gear 15 drives the meshing small gear 13 to rotate. The small gear 13 drives the first rotating shaft 12 to rotate synchronously at a certain angle. The opposite rotation of the first rotating shaft 12 and the second rotating shaft 14 causes the two first rotating plates 17 to overcome the tension of the first elastic connecting belt 18 and unfold. The air inlet of the air guide shroud 10 is fully opened. At this time, the airflow blown out by the cooling fan 6 enters the air guide pipe 7 through the opened air guide shroud 10. The airflow forms pressure in the pipe, pushing the first air inlet at the exhaust shroud 11. The second rotating plate 20, when subjected to force, drives the rotating rod 19 to rotate, stretching the tension spring 23. The air outlet of the exhaust hood 11 opens as the second rotating plate 20 unfolds. At this time, the airflow from the cooling fan 6 enters the L-shaped air duct 7 through the air guide hood 10. Because the air guide duct 7 is fixed at an equal angle around the edge of the fixed plate 4, the airflow is guided to the periphery of the winding 3. After the airflow is blown out from the air outlet of the exhaust hood 11, it forms a circumferentially covered airflow field along the outer surface of the winding 3, thereby eliminating the airflow blind zone of traditional heat dissipation. This allows the cold air to make all-round, dead-angle-free contact with the outer wall of the winding 3, significantly improving the integrity of heat exchange. As a result, the heat on the outer wall of the winding 3 can be completely removed, achieving sufficient and uniform heat dissipation of the winding 3. This solves the core problem of insufficient heat dissipation in transformer manufacturing, improves the heat exchange efficiency of transformer products, and ensures the long-term stable operation of the transformer.

[0042] It should also be noted that when the temperature of winding 3 drops to a safe range, the temperature sensor sends a stop signal, the electric telescopic rod 8 extends out of the output end, the ring frame 9 drives the rack 16 to reset downwards, the rack 16 drives the large gear 15 and the small gear 13 to rotate in the opposite direction, the first rotating plate 17 closes under the action of the retraction force of the first elastic connecting belt 18, the air inlet of the air guide shroud 10 is closed, the air pressure in the air guide pipe 7 disappears, the tension spring 23 contracts and drives the rotating rod 19 to reset, the second rotating plate 20 closes the exhaust shroud 11 under the action of the second elastic connecting belt 21, so that the entire air guide assembly returns to the initial closed state, the inside of the air guide pipe 7 is isolated from the outside, avoiding dust, insects and other impurities from entering the pipe and causing blockage, significantly extending the fault-free operation cycle of the equipment, and providing a solid guarantee for the continuous and efficient operation of the transformer.

[0043] Example 2: Please refer to Figure 10 - Figure 14 This embodiment further illustrates that, for example, each winding 3 is provided with a cleaning component on its exterior; and each air duct 7 is provided with a spraying component on one side of its interior.

[0044] The cleaning assembly includes a fixed frame 25 and a reciprocating screw 26. The fixed frame 25 is fixedly installed on the outside of the top side of the base 1 near the fixed plate 4. The reciprocating screw 26 is longitudinally rotatably installed on the outside of the bottom side of the upper frame 2. The bottom end of the reciprocating screw 26 is rotatably installed inside the fixed frame 25. A second engagement plate 34 is fixedly installed on the bottom end of the reciprocating screw 26.

[0045] A first sprocket 24 is fixedly installed at the top of the output shaft of the refrigeration fan 6. A positioning frame 27 is fixedly installed on the side of the outer shell of the refrigeration fan 6 near the positioning frame 27. A hollow rod 28 is rotatably engaged and installed through the side of the positioning frame 27 near the reciprocating screw 26. The hollow rod 28 and the reciprocating screw 26 are longitudinally coaxial. A second sprocket 29 is fixedly installed through the outside of one side of the hollow rod 28. A chain 30 is sleeved between the first sprocket 24 and the second sprocket 29 for transmission connection. A moving rod 31 is slidably installed longitudinally through the inside of the hollow rod 28. A support frame 32 is rotatably engaged and installed through the top of the moving rod 31. One end of the support frame 32 is fixedly installed on the outside of one side of the ring frame 9.

[0046] The top of the moving rod 31 is fixedly installed with a first engagement plate 33. A wiping ring 35 is threadedly connected to the outside of one side of the reciprocating screw 26. The wiping ring 35 is threadedly fitted to the outside of the winding 3 on the corresponding side. A guide rod 36 is slidably connected longitudinally through the inside of the wiping ring 35 away from the reciprocating screw 26. The two ends of the guide rod 36 are fixedly installed on one side of the base 1 and the upper frame 2, respectively.

[0047] The spraying assembly includes an annular nozzle pipe 37 and a contact block 38. The annular nozzle pipe 37 is fixedly installed inside one side of the corresponding air guide pipe 7. The contact block 38 is rotatably engaged and installed outside the bottom side of the moving rod 31. An auxiliary rod 39 is slidably installed inside one side of the contact block 38. The top end of the auxiliary rod 39 is fixedly installed outside the bottom side of the positioning frame 27.

[0048] A fixed guide tube 40 is fixedly installed inside one side of the positioning frame 27. A pressing valve 41 is fixedly installed inside the fixed guide tube 40 near the contact block 38. The pressing end of the pressing valve 41 is located on the side facing the top of the contact block 38. The output end of the fixed guide tube 40 is fixedly installed inside one side of the annular nozzle pipe 37.

[0049] In this embodiment, when the temperature of winding 3 exceeds the threshold, the temperature sensor triggers the start of the air guide assembly, and at the same time, the cleaning assembly and the spraying assembly operate synchronously:

[0050] The electric telescopic rod 8 retracts, causing the circular frame 9 to move upward. As the circular frame 9 moves upward, it causes the support frame 32 to move synchronously. The support frame 32 then pushes the moving rod 31 upward along the interior of the hollow rod 28, causing the first engagement disc 33 at the top of the moving rod 31 to precisely engage with the second engagement disc 34 at the bottom of the reciprocating screw 26. At this time, the power generated by the refrigeration fan 6 is transmitted through the first sprocket 24 and chain 30 to the second sprocket 29, driving the hollow rod 28 to rotate, thus causing the moving rod inside the hollow rod 28 to... 31 rotates synchronously, thereby driving the first engagement disc 33 to rotate synchronously. Through the meshing of the first engagement disc 33 and the second engagement disc 34, the reciprocating screw 26 is driven to rotate between the fixed frame 25 and the upper frame 2. The rotation of the reciprocating screw 26 causes the threaded wiping ring 35 to make longitudinal reciprocating motion along the guide rod 36, which is in contact with the outer wall of the winding 3 to clean the dust. This can efficiently remove the dust layer accumulated on the surface, allowing the metal surface of the winding 3 to directly contact the airflow, which significantly improves the heat exchange rate.

[0051] At the same time, when the moving rod 31 rises, it drives the contact block 38 to move upward along the auxiliary rod 39, contacting the pressing valve 41 below the positioning frame 27, so that the fixed conduit 40 is connected to the external inert gas tank. By adjusting the control valve on the inert gas tank, the gas flow rate is controlled, so that the high inert gas is quantitatively delivered to the inside of the annular nozzle pipe 37 through the fixed conduit 40. The high inert gas is evenly sprayed into the air duct 7 through the nozzle of the annular nozzle pipe 37, so that the injected high inert gas is fully mixed with the airflow sent by the cooling fan 6. The addition of inert gas can improve the thermal conductivity of the mixed airflow, enhance the convective heat transfer effect, and the airflow boundary layer formed on the surface of the winding 3 is thinner, accelerating heat transfer, thereby improving the overall heat dissipation effect and achieving efficient heat dissipation.

[0052] It should also be noted that when the temperature of winding 3 drops to a safe range and the temperature sensor sends a stop signal, the output end of the electric telescopic rod 8 extends, the ring frame 9 drives the moving rod 31 to move down, the first engagement plate 33 separates from the second engagement plate 34, the reciprocating screw 26 stops rotating, the wiping ring 35 stops cleaning and resets, the moving rod 31 moves down to make the contact block 38 disengage from the pressing valve 41, the valve automatically closes, cuts off the inert gas supply to avoid gas waste, all components return to their initial positions, waiting for the next start signal, and the overall operation is orderly and stable.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-heat-dissipation dry-type transformer, comprising a base (1), a plurality of windings (3) disposed on the top of the base (1), and an upper frame (2) fixed to the top of the plurality of windings (3), characterized in that: Temperature sensors are fixedly installed inside the upper frame (2) on the side near several windings (3). A cooling fan (6) is provided at the bottom of each winding (3). The bottom of the cooling fan (6) is fixedly installed on the outside of the top of the base (1). A fixing plate (4) is fixedly installed at the bottom of each winding (3). A support frame (5) is fixedly installed on both sides of the fixing plate (4). The bottom of the support frame (5) is fixedly installed on the outside of the top of the base (1). An air guide component is provided at the bottom edge of each winding (3). A cleaning component is provided on the outside of each winding (3). The air guiding assembly includes several air guiding pipes (7), an electric telescopic rod (8), and a ring frame (9). Several air guiding pipes (7) are fixedly installed around the outer edge of the fixed plate (4) at equal angles. The electric telescopic rod (8) is fixedly installed at the bottom center of the fixed plate (4). The bottom of the output end of the electric telescopic rod (8) is fixedly installed with a ring frame (9). A spraying component is provided inside one side of each air guiding pipe (7). Several of the air guide pipes (7) are L-shaped. Each air guide pipe (7) has an air guide cover (10) fixedly installed at one end near the electric telescopic rod (8). The air guide cover (10) has a first rotating shaft (12) and a second rotating shaft (14) symmetrically rotated and installed on the side away from the air guide pipe (7). A small gear (13) is fixedly installed on the outside of one end of the first rotating shaft (12), and a large gear (15) is fixedly installed on the outside of one end of the second rotating shaft (14). The small gear (13) and the large gear (15) are meshed and connected. A rack (16) is longitudinally meshed on one side of the large gear (15). One end of the rack (16) is fixedly installed on the outside of one side of the ring frame (9). Two first rotating plates (17) are symmetrically arranged on the outside of one side of the air guide shroud (10). One end of the two first rotating plates (17) is fixedly installed on one side of the first rotating shaft (12) and the second rotating shaft (14), respectively. A first elastic connecting strip (18) is fixedly installed between the inner walls on both sides of the two first rotating plates (17). Each of the air ducts (7) has an exhaust hood (11) fixedly installed at its top end. Two rotating rods (19) are symmetrically installed inside the exhaust hood (11) on the side away from the air duct (7). Two second rotating plates (20) are symmetrically arranged on the outside of one side of the exhaust hood (11). One end of each of the two second rotating plates (20) is fixedly installed outside a rotating rod (19) on the corresponding side. A second elastic connecting strip (21) is fixedly installed between the inner walls of the two sides of the two second rotating plates (20).

2. The high heat dissipation dry-type transformer according to claim 1, characterized in that: Each of the two rotating rods (19) has a fixed seat (22) fixedly installed on one end of each rod, and a tension spring (23) is fixedly connected between the two fixed seats (22).

3. A high-heat-dissipation dry-type transformer according to claim 1, characterized in that: The cleaning assembly includes a fixed frame (25) and a reciprocating screw (26). The fixed frame (25) is fixedly installed on the outside of the top side of the base (1) near the fixed plate (4). The reciprocating screw (26) is longitudinally rotatably installed on the outside of the bottom side of the upper frame (2). The bottom end of the reciprocating screw (26) is rotatably installed inside the fixed frame (25). The bottom end of the reciprocating screw (26) is fixedly installed with a second engagement plate (34).

4. A high-heat-dissipation dry-type transformer according to claim 3, characterized in that: The output shaft of the refrigeration fan (6) is fixedly mounted with a first sprocket (24). The refrigeration fan (6) is fixedly mounted with a positioning frame (27) on the side of its outer shell near the positioning frame (27). The positioning frame (27) is rotatably engaged with a hollow rod (28) on the side of its inner shell near the reciprocating screw (26). The hollow rod (28) and the reciprocating screw (26) are longitudinally coaxial. The hollow rod (28) is fixedly mounted with a second sprocket (29) on the outer side of its inner shell. A chain (30) is sleeved between the first sprocket (24) and the second sprocket (29). A moving rod (31) is slidably mounted longitudinally inside the hollow rod (28). The top of the moving rod (31) is rotatably engaged with a support frame (32). One end of the support frame (32) is fixedly mounted on the outer side of the ring frame (9).

5. A high-heat-dissipation dry-type transformer according to claim 4, characterized in that: The top of the moving rod (31) is fixedly installed with a first engagement plate (33). A wiping ring (35) is threadedly connected to the outside of one side of the reciprocating screw (26). The wiping ring (35) is threadedly fitted to the outside of the winding (3) on the corresponding side. A guide rod (36) is longitudinally slidably connected to the inside of the wiping ring (35) away from the reciprocating screw (26). The two ends of the guide rod (36) are fixedly installed on one side of the base (1) and the upper frame (2), respectively.

6. A high-heat-dissipation dry-type transformer according to claim 4, characterized in that: The spraying assembly includes an annular nozzle pipe (37) and a contact block (38). The annular nozzle pipe (37) is fixedly installed inside one side of the corresponding air guide pipe (7). The contact block (38) is rotatably engaged and installed outside the bottom side of the moving rod (31). An auxiliary rod (39) is slidably installed inside one side of the contact block (38). The top end of the auxiliary rod (39) is fixedly installed outside the bottom side of the positioning frame (27).

7. A high-heat-dissipation dry-type transformer according to claim 6, characterized in that: A fixed conduit (40) is fixedly installed inside one side of the positioning frame (27). A pressing valve (41) is fixedly installed inside the fixed conduit (40) on the side near the contact block (38). The pressing end of the pressing valve (41) is located on the top side facing the contact block (38). The output end of the fixed conduit (40) is fixedly installed inside one side of the annular nozzle pipe (37).

Images