High-efficiency heat-dissipation moisture-proof device for power transformer

Abstract

The invention discloses an efficient heat dissipation and moisture-proof device for a power transformer, and belongs to the field of power equipment. The moisture-proof device comprises a power transformer body and heat dissipation structures symmetrically arranged on the two sides of the power transformer body; moisture-proof structures are arranged at the bottoms of the two sides of the power transformer body, and each moisture-proof structure comprises an air collection frame plate fixedly arranged on the power transformer body and an arc-shaped air guide pipe fixedly connected to the lower end of the air collection frame plate; the damp-proof structure further comprises an air catching cover which is fixedly connected to one end of the air collecting frame plate and corresponds to the heat dissipation structure. The lower end of the power transformer is blown and heated through the damp-proof structure, water drops are effectively prevented from being adsorbed to the lower end of the transformer for a long time, and the corrosion phenomenon caused by damp is reduced. And hot air generated in the heat dissipation process is used for heating the lower end of the power transformer, heat energy recycling is achieved, the overall energy efficiency of the device is improved, and the lower end of the power transformer is prevented from being affected with damp.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a highly efficient heat dissipation and moisture-proof device for a power transformer. Background Art

[0002] As a vital equipment in the power system, the transformer generally has a conversion efficiency of more than 99%, but it is inevitable that certain losses will occur during the energy conversion process, including copper loss, core loss, hysteresis loss and eddy current loss. These losses will be converted into heat energy when the transformer is working, causing the internal temperature of the transformer to rise. In order to maintain the transformer within a suitable operating temperature range, a variety of cooling methods are widely used. Among them, oil natural air cooling is a common and effective heat dissipation method.

[0003] The oil natural air cooling system is usually achieved by installing a radiator on the transformer. The radiator consists of a hollow fin plate and an inlet pipe and an outlet pipe fixedly installed at the upper and lower ends of the hollow fin plate respectively. The inlet pipe is connected to the top of the transformer, while the outlet pipe is connected to the bottom of the transformer. When the transformer is running, the heat generated will cause the transformer oil to expand and rise to the upper part of the main oil tank. Subsequently, the hot oil flows into the radiator through the inlet pipe, dissipates heat in the hollow fin plate and gradually cools down. The cooled oil then flows back to the main oil tank through the outlet pipe, forming a continuous circulation process, thereby achieving effective heat dissipation of the transformer.

[0004] However, in the field environment of the south, this oil-free air cooling system faces some special challenges. Due to the high humidity in the south, the sides and top of the power transformer are often in a relatively dry state due to the sunlight and self-heating. However, the lower end of the power transformer is in a cool state because it is not exposed to direct sunlight, which easily leads to a layer of water mist adsorbed on the lower surface. Long-term exposure to humidity may not only accelerate the corrosion and oxidation of the transformer casing, but also have an adverse effect on the electrical performance and insulation performance of the transformer.

[0005] Therefore, the present application provides a high-efficiency heat dissipation and moisture-proof device for a power transformer to solve the above-mentioned problems. Summary of the invention

[0006] The present application provides a highly efficient heat dissipation and moisture-proof device for power transformers, aiming to solve the problem that the lower end of the existing power transformer is in a cool state due to lack of direct sunlight, which easily leads to a layer of water mist adsorbed on the surface of the lower end. Long-term exposure to moisture may accelerate the corrosion and oxidation of the transformer shell.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an efficient heat dissipation and moisture-proof device for a power transformer, comprising a power transformer body and a heat dissipation structure symmetrically arranged on both sides of the power transformer body; The bottom of both sides of the power transformer body is provided with a moisture-proof structure for recycling the hot air discharged from the heat dissipation structure. The moisture-proof structure includes a wind collecting frame fixedly arranged on the power transformer body and an arc-shaped air duct fixedly connected to the lower end of the wind collecting frame, and the end of the arc-shaped air duct away from the wind collecting frame corresponds to the lower end of the power transformer body; the moisture-proof structure also includes a wind catcher fixedly connected to one end of the wind collecting frame and corresponding to the heat dissipation structure for capturing the hot air discharged from the heat dissipation structure. In the process of heat dissipation of the power transformer body, the hot air discharged from the heat dissipation structure is captured by the wind catcher located on one side of the heat dissipation structure, and the hot air enters the interior of the wind collecting frame through the wind catcher, and then is discharged to the lower end of the power transformer body through the arc-shaped air duct. Since the air outlet end of the arc-shaped air duct is in an arc shape, the hot air discharged from the arc-shaped air duct hits the lower end of the power transformer body along the arc track, sweeps the lower end of the power transformer body, increases the temperature of the lower end of the power transformer body, and improves the moisture-proof effect of the power transformer body.

[0008] Preferably, in order to facilitate the installation of the moisture-proof structure: the bottoms of both sides of the power transformer body are symmetrically fixedly connected with internal threaded sleeves, the side of the wind collecting frame plate close to the power transformer body is symmetrically fixedly connected with a hole plate corresponding to the internal threaded sleeve, and the hole plate is movably plugged with a bolt threadedly plugged with the internal threaded sleeve. Through the threaded connection between the internal threaded sleeve and the bolt, the moisture-proof structure can be easily and quickly installed on the power transformer body without complicated installation steps and tools, greatly improving the installation efficiency.

[0009] Preferably, the air collecting frame plate and the arc-shaped air guiding duct are integrally formed. The integrally formed air collecting frame plate and the arc-shaped air guiding duct form an integral structure, which greatly improves the stability and durability of the structure.

[0010] Preferably, in order to speed up the flow of hot air from the air collecting frame to the arc-shaped air duct, the air inlet port of the air collecting frame is larger than the air outlet port of the arc-shaped air duct. The tapered pipe design makes the hot air flow faster due to the gradually decreasing pipe cross section during the flow process.

[0011] Preferably, in order to facilitate the hot air in the wind catcher to enter the wind collecting frame, the wind catcher is in a conical shape, that is, a structure with a large top and a small bottom. The design of the conical wind catcher makes the hot air be affected by the gradually decreasing pipe cross section during the flow process, and the flow speed is accelerated.

[0012] Preferably, in order to prevent the hot air entering the wind catching hood from moving out of the wind catching hood along the inner wall of the wind catching hood: a U-shaped wind shield is fixedly connected to the inside of the wind catching hood corresponding to its port, and an air guide groove is formed between the U-shaped wind shield and the wind catching hood. The design of the U-shaped wind shield reduces the discharge of hot air in the wind catching hood and improves the utilization efficiency of hot air.

[0013] Preferably, in order to facilitate the hot air in the air guide groove to be introduced into the air collecting frame plate: a plurality of inclined plates are fixedly connected to the inside of the air guide groove in the vertical direction, and the upper ends of the inclined plates are inclined toward the direction of the U-shaped wind shield. The design of the inclined plates enables the hot air discharged from the heat dissipation structure to hit the inclined plates and move obliquely downward along the inclined plates after entering the wind catcher, thereby accelerating the speed at which the hot air in the air guide groove moves downward, and further improving the utilization efficiency of the hot air.

[0014] Preferably, the heat dissipation structure comprises a liquid inlet pipe and a liquid outlet pipe respectively fixedly mounted on the top and bottom of the power transformer body and connected to the inside thereof, a plurality of hollow fin plates are fixedly connected side by side between the liquid inlet pipe and the liquid outlet pipe, a fan is fixedly mounted on the power transformer body corresponding to the side of the heat dissipation structure away from the wind catcher, and the fan is installed at an angle, that is, the gap between the top of the fan and the hollow fin plate is smaller than the gap between the bottom of the fan and the hollow fin plate. The heat dissipation effect of the power transformer body can be improved by the heat dissipation structure; the fan can blow air to the heat dissipation structure to accelerate the discharge of hot air between adjacent hollow fin plates.

[0015] Preferably, in order to further increase the flow rate of hot air between adjacent hollow fin plates: an impeller corresponding to the fan is rotatably arranged between adjacent hollow fin plates, and a bearing is arranged between the shaft of the impeller and the hollow fin plates. By adding an impeller between adjacent hollow fin plates, when the fan blows the hot air obliquely downward, the impeller is driven by the wind to rotate, further accelerating the flow rate of hot air between the hollow fin plates.

[0016] Preferably, in order to facilitate the control of the start of the fan: a controller connected to the fan is fixedly installed on the power transformer body, and a liquid level sensor connected to the controller is fixedly arranged inside the liquid inlet pipe. Through the combination of the liquid level sensor and the controller, precise control of the start of the fan is achieved. The intelligent control system ensures that the fan is started in time when needed, speeds up the flow rate of hot air between the hollow fin plates, and improves the heat dissipation efficiency.

[0017] The present application uses a moisture-proof structure to purge and heat the lower end of the power transformer, effectively preventing water droplets from being adsorbed on the lower end of the transformer for a long time and reducing corrosion caused by moisture. The hot air generated during the heat dissipation process is used to heat the lower end of the power transformer, which not only realizes the recycling of heat energy, but also improves the overall energy efficiency of the device and prevents the lower end of the power transformer from getting damp. Through the synergistic effect of the heat dissipation structure and the moisture-proof structure, not only the heat dissipation efficiency of the transformer is improved, but also the stable operation of the transformer in harsh environments is ensured.

[0018] The present application uses the design of the inclined plate to allow the hot air discharged from the heat dissipation structure to hit the inclined plate and move diagonally downward along the inclined plate after entering the wind catcher, thereby accelerating the speed at which the hot air in the air guide groove moves downward, further improving the utilization efficiency of the hot air. The setting of the inclined plate can also effectively prevent the hot air entering the air guide groove from flowing upward, ensuring that the hot air can smoothly enter the air collecting frame.

[0019] The present application can improve the heat dissipation effect of the power transformer body through the heat dissipation structure; the fan can blow air to the heat dissipation structure to accelerate the discharge of hot air between adjacent hollow fin plates; at the same time, the fan can make the hot air flow in the direction of the wind catcher, thereby improving the capture of hot air by the wind catcher.

[0020] The present application can improve the heat dissipation effect of the power transformer body through the heat dissipation structure; the fan can blow air to the heat dissipation structure to accelerate the discharge of hot air between adjacent hollow fin plates; at the same time, the fan can make the hot air flow in the direction of the wind catcher, thereby improving the capture of hot air by the wind catcher.

[0021] The present application adds an impeller between adjacent hollow fin plates. When the fan blows the hot air obliquely downward, the impeller is driven by the wind to rotate, further accelerating the flow rate of the hot air between the hollow fin plates. The rotation of the impeller not only accelerates the flow rate of the hot air, but also promotes the heat exchange between the hot air and the hollow fin plates, so that the heat dissipation efficiency is significantly improved.

[0022] This application realizes precise control of fan startup through the combination of liquid level sensor and controller. The intelligent control system ensures that the fan is started in time when needed, speeds up the flow rate of hot air between the hollow fin plates, and improves the heat dissipation efficiency. By precisely controlling the start and stop of the fan, the ineffective rotation of the fan when heat dissipation is not required is avoided, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a highly efficient heat dissipation and moisture-proof device for a power transformer; Figure 2 for Figure 1 Schematic diagram of the other side of the structure; Figure 3 for Figure 2 The enlarged structural diagram at A in the middle; Figure 4 for Figure 2 The main view of the structure in; Figure 5 for Figure 2 Schematic diagram of the corresponding heat dissipation structure and moisture-proof structure; Figure 6 It is a structural schematic diagram of the moisture-proof structure; Figure 7 for Figure 6 Structural cross-sectional view in ; Figure 8 is a schematic diagram of the heat dissipation structure; Fig. 9 for Figure 8 Schematic diagram of the structure inside the liquid inlet pipe.

[0024] In the figure: 1. Power transformer body; 11. Internal threaded sleeve; 2. Heat dissipation structure; 21. Liquid inlet pipe; 22. Liquid outlet pipe; 23. Hollow fin plate; 231. Impeller; 24. Fan; 3. Moisture-proof structure; 31. Wind collecting frame plate; 311. Orifice plate; 312. Bolt; 32. Arc air duct; 33. Wind catcher; 331. U-shaped wind shield; 332. Air guide slot; 333. Inclined plate; 4. Controller; 41. Liquid level sensor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] This embodiment provides a high-efficiency heat dissipation and moisture-proof device for a power transformer, such as Figure 1-9 As shown, the moisture-proof device comprises a power transformer body 1 and a heat dissipation structure 2 symmetrically arranged on both sides of the power transformer body 1; The bottom of both sides of the power transformer body 1 is provided with a moisture-proof structure 3 for recycling the hot air discharged from the heat dissipation structure 2. The moisture-proof structure 3 includes a wind collecting frame 31 fixedly arranged on the power transformer body 1 and an arc-shaped air duct 32 fixedly connected to the lower end of the wind collecting frame 31. The end of the arc-shaped air duct 32 away from the wind collecting frame 31 corresponds to the lower end of the power transformer body 1. The moisture-proof structure 3 also includes a wind catching cover 33 fixedly connected to one end of the wind collecting frame 31 and corresponding to the heat dissipation structure 2 for capturing the hot air discharged from the heat dissipation structure 2. The moisture-proof structure 3 is used to purge and heat the lower end of the power transformer, effectively preventing water droplets from being adsorbed on the lower end of the transformer for a long time, and reducing corrosion caused by moisture. The hot air generated during the heat dissipation process is used to heat the lower end of the power transformer, which not only realizes the recycling of heat energy, but also improves the overall energy efficiency of the device and prevents the lower end of the power transformer from being damp. Through the synergistic effect of the heat dissipation structure 2 and the moisture-proof structure 3, not only the heat dissipation efficiency of the transformer is improved, but also the stable operation of the transformer in harsh environments is ensured. In the process of heat dissipation of the power transformer body 1, the hot air discharged from the heat dissipation structure 2 is captured by the wind catcher 33 located on one side of the heat dissipation structure 2, and the hot air enters the interior of the wind collecting frame plate 31 through the wind catcher 33, and then is discharged to the lower end of the power transformer body 1 through the arc-shaped air duct 32. Since the air outlet end of the arc-shaped air duct 32 is in an arc shape, the hot air discharged from the arc-shaped air duct 32 hits the lower end of the power transformer body 1 along the arc trajectory, sweeping the lower end of the power transformer body 1, increasing the temperature of the lower end of the power transformer body 1, and improving the moisture-proof effect of the power transformer body 1.

[0027] Specifically, in order to facilitate the installation of the moisture-proof structure 3: the bottom of both sides of the power transformer body 1 are symmetrically fixedly connected with an internal threaded sleeve 11, and the side of the wind collecting frame plate 31 close to the power transformer body 1 is symmetrically fixedly connected with a hole plate 311 corresponding to the internal threaded sleeve 11, and the hole plate 311 is movably plugged with a bolt 312 threadedly plugged with the internal threaded sleeve 11. Through the threaded connection between the internal threaded sleeve 11 and the bolt 312, the moisture-proof structure 3 can be easily and quickly installed on the power transformer body 1, without the need for complicated installation steps and tools, greatly improving the installation efficiency. The threaded connection design is not only convenient for installation, but also for subsequent maintenance and replacement. When the moisture-proof structure 3 fails or needs maintenance, the staff only needs to unscrew the bolt 312 to easily disassemble the moisture-proof structure 3, reducing maintenance costs and time costs.

[0028] Furthermore, the wind collecting frame plate 31 and the arc-shaped air duct 32 are integrally formed. The integrally formed wind collecting frame plate 31 and the arc-shaped air duct 32 form an integral structure, which greatly improves the stability and durability of the structure. The integrally formed moisture-proof structure 3 can better capture and recycle the hot air generated during the heat dissipation process, and guide it to the lower end of the power transformer body 1 for blowing and heating. The moisture-proof effect is enhanced, and the corrosion caused by water droplets adsorbed on the lower end of the transformer for a long time is effectively prevented.

[0029] Furthermore, in order to speed up the flow rate of hot air from the air collecting frame 31 to the arc-shaped air duct 32: the air inlet port of the air collecting frame 31 is larger than the air outlet port of the arc-shaped air duct 32. The conical tube design makes the hot air be affected by the gradually decreasing pipe cross-section during the flow process, and the flow rate is accelerated. This change not only improves the utilization efficiency of the hot air, but also enhances the purging effect of the hot air on the lower end of the power transformer body 1. The accelerated hot air flow rate means that the hot air can reach the lower end of the power transformer body 1 faster, and the lower end can be purged and heated more efficiently. This change further improves the moisture-proof effect and effectively prevents the corrosion caused by water droplets adsorbed on the lower end of the transformer for a long time.

[0030] In order to facilitate the hot air in the wind catcher 33 to enter the wind collecting frame 31: the wind catcher 33 is in a conical shape, that is, a large upper part and a small lower part. The design of the conical wind catcher 33 makes the hot air be affected by the gradually decreasing pipe cross-section during the flow process, and the flow rate is accelerated. The accelerated hot air flow rate means that the hot air can pass through the wind collecting frame 31 and enter the arc-shaped air duct 32 more quickly, thereby more efficiently blowing and heating the lower end of the power transformer body 1. Due to the accelerated hot air flow rate and the improved heat dissipation efficiency, the temperature of the lower end of the power transformer body 1 is increased more quickly, thereby effectively preventing the corrosion caused by water droplets adsorbed on the lower end of the transformer for a long time. This change further enhances the moisture-proof effect.

[0031] In order to prevent the hot air entering the wind catching hood 33 from moving out of the wind catching hood 33 along the inner wall of the wind catching hood 33: a U-shaped wind shield 331 is fixedly connected to the inside of the wind catching hood 33 corresponding to its port, and a wind guide groove 332 is formed between the U-shaped wind shield 331 and the wind catching hood 33. The design of the U-shaped wind shield 331 reduces the discharge of hot air in the wind catching hood 33 and improves the utilization efficiency of the hot air. The conical design of the wind guide groove 332 makes the hot air be affected by the gradually decreasing pipe cross-section during the flow process, and the flow rate is accelerated. Due to the accelerated hot air flow rate and the improved hot air blocking effect, the temperature at the lower end of the power transformer body 1 is increased more quickly, thereby improving the heat dissipation efficiency and ensuring the stable operation of the transformer. The accelerated hot air flow rate and higher temperature effectively prevent the corrosion caused by water droplets adsorbed on the lower end of the transformer for a long time, and further enhance the moisture-proof effect.

[0032] In order to facilitate the introduction of the hot air in the air guide groove 332 into the wind collecting frame 31: the interior of the air guide groove 332 is fixedly connected with a plurality of inclined plates 333 in the vertical direction, and the upper end of the inclined plate 333 is inclined toward the direction of the U-shaped wind shield 331. The design of the inclined plate 333 enables the hot air discharged from the heat dissipation structure 2 to hit the inclined plate 333 and move obliquely downward along the inclined plate 333 after entering the wind catcher 33, thereby accelerating the speed of the hot air in the air guide groove 332 moving downward, and further improving the utilization efficiency of the hot air. The setting of the inclined plate 333 can also effectively prevent the hot air entering the air guide groove 332 from flowing upward, ensuring that the hot air can smoothly enter the wind collecting frame 31. In the process of heat dissipation of the power transformer body 1, the heat dissipation structure 2 starts to work and dissipates the heat generated by the transformer into the surrounding environment. At this time, the conical wind catcher 33 captures the hot air discharged from the heat dissipation structure 2. After the hot air enters the wind catching hood 33, it is blocked by the U-shaped wind shield 331 and cannot flow along the inner wall of the wind catching hood 33 and be discharged outside the wind catching hood 33. At the same time, the hot air is accelerated by the conical design of the air guide groove 332 and the guidance of the inclined plate 333, and smoothly enters the interior of the wind collecting frame 31. The design of the inclined plate 333 enables the hot air to move obliquely downward along the inclined plate 333 after hitting the inclined plate 333, further accelerating the speed of the hot air moving downward and preventing the hot air from flowing upward. The accelerated hot air passes through the conical tube structure composed of the wind collecting frame 31 and the arc-shaped air guide pipe 32, further accelerating the flow rate and being discharged to the lower end of the power transformer body 1, and the lower end is efficiently purged and heated. At the same time, the threaded connection mode of the internal threaded sleeve 11 and the bolt 312 ensures that the moisture-proof structure 3 can be firmly installed on the power transformer body 1, avoiding hot air leakage or safety hazards caused by loose connection.

[0033] Specifically, the heat dissipation structure 2 includes a liquid inlet pipe 21 and a liquid outlet pipe 22 respectively fixedly mounted on the top and bottom of the power transformer body 1 and connected to the inside thereof, a plurality of hollow fin plates 23 are fixedly connected side by side between the liquid inlet pipe 21 and the liquid outlet pipe 22, a fan 24 is fixedly mounted on the power transformer body 1 corresponding to the side of the heat dissipation structure 2 away from the wind catcher 33, and the fan 24 is installed obliquely, that is, the gap between the top of the fan 24 and the hollow fin plate 23 is smaller than the gap between the bottom of the fan 24 and the hollow fin plate 23. The heat dissipation effect of the power transformer body 1 can be improved by the heat dissipation structure 2; the fan 24 can blow air to the heat dissipation structure 2 to accelerate the discharge of hot air between adjacent hollow fin plates 23; and the fan 24 can make the hot air flow in the direction of the wind catcher 33 to improve the capture of hot air by the wind catcher 33. When the transformer is in a loaded state, the transformer will generate a large amount of heat. According to the law of heat transfer, the volume of the heated oil increases and rises to the upper part of the main oil tank. Then the heated oil enters the hollow fin plate 23 through the liquid inlet pipe 21. Finally, the hot oil dissipates heat through the hollow fin plate 23 and cools down. The cooled oil returns to the main oil tank through the liquid outlet pipe 22. This cycle is repeated continuously to achieve natural air cooling of the oil. In the process of heat dissipation, the hot air between adjacent hollow fin plates 23 is swept obliquely downward by the fan 24, so as to accelerate the flow rate of the hot air between adjacent hollow fin plates 23, improve the heat dissipation effect of the hollow fin plate 23 on the oil, and accelerate the natural cooling of the oil; at the same time, it can also make the purged hot air collide with the inclined plate 333, increase the flow rate of the hot air inside the wind catching hood 33, and accelerate the hot air to flow to the wind collecting frame plate 31. The invention of the specification is expanded in detail, and the beneficial effect is that the working principle is, Furthermore, in order to further increase the flow rate of hot air between adjacent hollow fin plates 23: an impeller 231 corresponding to the fan 24 is rotatably arranged between adjacent hollow fin plates 23, and a bearing is arranged between the shaft of the impeller 231 and the hollow fin plates 23. By adding an impeller 231 between adjacent hollow fin plates 23, when the fan 24 blows the hot air obliquely downward, the impeller 231 is driven by the wind to rotate, further accelerating the flow rate of the hot air between the hollow fin plates 23. The rotation of the impeller 231 not only accelerates the flow rate of the hot air, but also promotes the heat exchange between the hot air and the hollow fin plates 23, so that the heat dissipation efficiency is significantly improved.

[0034] In order to facilitate the control of the start of the fan 24: a controller 4 connected to the fan 24 is fixedly installed on the power transformer body 1, and a liquid level sensor 41 connected to the controller 4 is fixedly arranged inside the liquid inlet pipe 21. Through the combination of the liquid level sensor 41 and the controller 4, the precise control of the start of the fan 24 is achieved. When the oil flows in the liquid inlet pipe 21, the fan 24 automatically starts to dissipate heat; when the oil stops flowing, the fan 24 automatically stops rotating, thereby avoiding unnecessary energy consumption. The intelligent control system ensures that the fan 24 is started in time when needed, speeds up the flow rate of hot air between the hollow fin plates 23, and improves the heat dissipation efficiency. By accurately controlling the start and stop of the fan 24, the ineffective rotation of the fan 24 when heat dissipation is not required is avoided, thereby reducing energy consumption. When the power transformer body 1 is dissipating heat, when the liquid level sensor 41 detects that the oil flows inside the liquid inlet pipe 21, it transmits a signal to the controller 4, and the controller 4 starts the fan 24 to dissipate heat from the hollow fin plates 23. When the liquid level sensor 41 detects that the oil does not flow in the liquid inlet pipe 21 , the controller 4 stops the rotation of the fan 24 .

[0035] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A high-efficiency heat dissipation and moisture-proof device for a power transformer, comprising a power transformer body (1) and a heat dissipation structure (2) symmetrically arranged on both sides of the power transformer body (1); Features: The bottom of both sides of the power transformer body (1) is provided with a moisture-proof structure (3) for recycling hot air discharged from the heat dissipation structure (2), the moisture-proof structure (3) comprising an air collecting frame (31) fixedly arranged on the power transformer body (1) and an arc-shaped air guide pipe (32) fixedly connected to the lower end of the air collecting frame (31), the end of the arc-shaped air guide pipe (32) away from the air collecting frame (31) corresponding to the lower end of the power transformer body (1); the moisture-proof structure (3) also comprises an air catcher (33) fixedly connected to one end of the air collecting frame (31) and corresponding to the heat dissipation structure (2) for capturing hot air discharged from the heat dissipation structure (2).

2. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 1 is characterized in that: Internally threaded sleeves (11) are symmetrically fixedly connected to the bottoms of both sides of the power transformer body (1); a hole plate (311) corresponding to the internally threaded sleeve (11) is symmetrically fixedly connected to one side of the wind collecting frame plate (31) close to the power transformer body (1); and a bolt (312) threadably connected to the internally threaded sleeve (11) is movably inserted on the hole plate (311).

3. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 1 is characterized in that: The air collecting frame plate (31) and the arc-shaped air guide pipe (32) are integrally formed.

4. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 3 is characterized in that: The air inlet port of the air collecting frame plate (31) is larger than the air outlet port of the arc-shaped air guide pipe (32).

5. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 1 is characterized in that: The wind catching cover (33) is in a cone shape, i.e., a structure that is larger at the top and smaller at the bottom.

6. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 1, characterized in that: A U-shaped wind shield (331) is fixedly connected to the interior of the wind catching cover (33) at a position corresponding to the port thereof, and a wind guide groove (332) is formed between the U-shaped wind shield (331) and the wind catching cover (33).

7. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 6, characterized in that: A plurality of inclined plates (333) are fixedly connected to the interior of the air guide groove (332) in a vertical direction, and the upper ends of the inclined plates (333) are inclined in the direction of the U-shaped wind shielding plate (331).

8. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 1 is characterized in that: The heat dissipation structure (2) comprises a liquid inlet pipe (21) and a liquid outlet pipe (22) respectively fixedly mounted on the top and bottom of the power transformer body (1) and connected to the interior thereof; a plurality of hollow fin plates (23) are fixedly connected side by side between the liquid inlet pipe (21) and the liquid outlet pipe (22); a fan (24) is fixedly mounted on the power transformer body (1) on a side of the heat dissipation structure (2) away from the wind catcher (33); the fan (24) is installed at an angle, i.e., a gap between the top of the fan (24) and the hollow fin plate (23) is smaller than a gap between the bottom of the fan (24) and the hollow fin plate (23).

9. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 8, characterized in that: An impeller (231) corresponding to the fan (24) is rotatably arranged between adjacent hollow fin plates (23), and a bearing is arranged between a shaft of the impeller (231) and the hollow fin plates (23).

10. The high-efficiency heat dissipation and moisture-proof device for power transformer according to claim 8, characterized in that: A controller (4) connected to the fan (24) is fixedly mounted on the power transformer body (1), and a liquid level sensor (41) connected to the controller (4) is fixedly arranged inside the liquid inlet pipe (21).

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