Dry-type transformer

Abstract

The dry-type transformer comprises a transformer box body, a transformer main body is installed in the transformer box body, ventilation openings are formed in the positions, close to the top, of the two end walls of the transformer box body, and ventilation fans are fixedly installed on the inner sides of the ventilation openings; air outlets are formed in the positions, close to the bottom, of the two end walls of the transformer box body, and filter screens are installed on the inner sides of the air outlets, the waterproof mechanism and the detection structure are arranged, when a detection head in the detection structure detects that the water level rises, an electric telescopic rod drives a waterproof frame to move upwards, and the height of the transformer box body is adjusted; and accumulated water is prevented from entering the transformer box body, damage to internal components is avoided, when a detection head in the detection structure is damaged, automatic replacement of the detection head is completed under cooperative use of a second electric telescopic device, a first driving motor, a second driving motor, a first positioning cylinder and a second positioning cylinder, and operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a dry-type transformer. BACKGROUND

[0002] As a key device in the power system, power transformers undertake the key task of voltage transformation, power transmission and distribution. Currently, dry-type transformers have become the core equipment for power conversion and distribution in many places with strict safety and environmental requirements, such as high-rise buildings, hospitals, data centers, and mines, due to their oil-free, fire and explosion prevention, and convenient maintenance, and play a crucial role.

[0003] Some existing power transformers are usually installed inside the transformer box during use. It is not convenient to move and adjust the transformer body during installation, making the installation operation more difficult. Moreover, the existing power transformers cannot adjust the size of the ventilation opening and the air outlet according to the indoor and outdoor environmental conditions, so that rainwater can easily enter the transformer box through the ventilation opening when it rains. When the internal temperature is too high, the internal heat is difficult to discharge from the air outlet. When there is too much water, it will cause water to enter the transformer box, which can easily cause damage to the internal mechanism. SUMMARY

[0004] In order to solve the problems raised in the background art, the present application provides a dry-type transformer.

[0005] The dry-type transformer provided by the present application adopts the following technical scheme: A dry-type transformer, comprising a transformer box, wherein the inside of the transformer box is installed with a transformer body, both ends of the transformer box near the top position are provided with ventilation openings, the inside of the ventilation openings is fixedly installed with ventilation fans, both ends of the transformer box near the bottom position are provided with air outlets, the inside of the air outlets is installed with filter screens, the bottom of the transformer box is provided with a waterproof mechanism, the inside of the transformer box is provided with a moving mechanism for facilitating the installation and removal of the transformer body, the inside of the transformer box is also provided with a fixing structure for fixing the transformer body, both ends of the transformer box at the ventilation openings are provided with filter mechanisms, the filter mechanisms are provided with rain shielding structures for shielding the ventilation openings, and both end side walls of the transformer box at the air outlets are provided with flow guiding structures. The waterproof mechanism includes a waterproof frame installed at the bottom of the transformer housing. The waterproof frame is mounted on top of a base. Symmetrical L-shaped support frames are installed at both ends of the waterproof frame on the top of the base. An electric telescopic rod is installed on the top of the L-shaped support frame. One end of the electric telescopic rod passes through a through hole in the L-shaped support frame and is connected to a connecting seat at both ends of the waterproof frame. A detection structure is also installed at one end of the waterproof frame. The detection mechanism includes a mounting frame installed at one end of the waterproof frame. A detection head is installed on a first L-shaped block at the bottom of the mounting frame. The detection head is threaded to the first L-shaped block. A second electric push rod is installed on a second L-shaped block at the top of the mounting frame. One end of the second electric push rod is connected to a support plate. A first drive motor is installed on the support plate. The output end of the first drive motor is connected to the mounting plate. Symmetrical second drive motors are installed at the bottom of the mounting plate. The output end of one of the second drive motors is connected to a first positioning cylinder, and the output end of the other second drive motor is connected to a second positioning cylinder. Clamping blocks are installed inside the first and second positioning cylinders.

[0006] Preferably, the moving mechanism includes two symmetrical guide rails installed on the bottom surface of the transformer housing. Symmetrical moving frames are slidably mounted on the top of the two guide rails. The top of the moving frames is fixedly connected to the bottom of the transformer body. Symmetrical guide wheels are provided at the bottom of the moving frames near the two end edges. The guide wheels slide inside the guide rails. Symmetrical cleaning brushes are also provided at both ends of the moving frames. One end of the cleaning brush is in contact with the inner bottom surface of the guide rail. A buffer assembly is also provided inside the guide rail at one end of the inner wall. The buffer assembly includes a damper installed on the inner wall of one end of the guide rail. A buffer spring is ringed on the damper. A stop block is connected to the other end of the damper. One side of the stop block is in contact with one end of the moving frame.

[0007] Preferably, the fixing structure includes two symmetrical L-shaped rack plates installed inside the transformer housing. The two L-shaped rack plates are slidably installed in symmetrical mounting frames provided on the bottom surface of the transformer housing. Gears mesh between the L-shaped rack plates, and the gears are rotatably mounted on a fixing rod provided on the bottom surface of the transformer housing. A connecting block is provided on one side wall of one of the L-shaped rack plates, and a first electric push rod is connected to one side of the connecting block. A connecting plate is also connected to one end of the L-shaped rack plate, and several fixing rods are fixedly installed on one side of the connecting plate. One end of the fixing rod passes through a fixing hole on the symmetrical L-shaped fixing plate provided at the bottom of the transformer body, and the other end of the fixing rod also passes through a limiting hole opened on one side wall of the guide rail.

[0008] Preferably, the filtering mechanism includes a fixed frame installed on the side walls at both ends of the transformer housing at the ventilation openings. One end of the fixed frame has an opening, and a filter frame is slidably installed inside the fixed frame. The top of the filter frame has two through slots, and a first filter plate and a second filter plate are slidably installed in the through slots. An L-shaped fixing block is provided at the bottom of the fixed frame near one edge. A pull rod is installed in a through hole at one end of the L-shaped fixing block. One end of the pull rod is connected to a fixing post, and the bottom of the fixing post is connected to a spring. The other end of the spring is connected to the L-shaped fixing block, and the other end of the fixing post passes through the through hole at the bottom of the fixed frame and into a limiting hole at the bottom of the filter frame.

[0009] Preferably, the rainproof structure includes two symmetrical support blocks installed on the top of the fixed frame. A rotating shaft is rotatably installed in the shaft holes opened in the side walls of the two support blocks. A rotating seat is fixedly installed on the rotating shaft between the two support blocks. One end of the rotating seat is connected to a rainproof plate. One end of the rotating shaft is also connected to a transmission component that drives the rainproof plate to rotate and adjust the angle.

[0010] Preferably, the transmission assembly includes a worm gear fixedly installed at one end of a rotating shaft, a worm adapted to be installed at the bottom of the worm gear, the worm being rotatably installed between shaft holes in a mounting base located on the back of the transformer housing near both ends, a second gear being installed on the worm at its middle section, a servo motor being fixedly installed on a motor base located on the back of the transformer housing at the bottom of the worm, a first gear being installed on the output shaft of the servo motor, the first gear meshing with the second gear, and two connecting wires being provided on the servo motor, one end of which is connected to a rain sensor located on the top of the transformer housing, and the other end of which passes through the interior of the transformer housing and is connected to a temperature sensor fixedly installed on the inner wall.

[0011] Preferably, the flow guiding structure includes a U-shaped frame installed at the air outlets on both end walls of the transformer housing. Several shafts are rotatably installed in the shaft holes on the inner wall of the U-shaped frame. A flow guiding plate is fixedly installed on the shaft. One end of the shaft passes through the shaft hole and is connected to a transmission gear. A mounting block is also provided at the top of one end of the U-shaped frame. An electric cylinder is installed on the top of the mounting block. One end of the electric cylinder is connected to a transmission rack. A limit block is provided on one side of the transmission rack. The transmission rack also meshes with the transmission gear.

[0012] In summary, the present invention has the following beneficial technical effects: 1. This invention includes a waterproof mechanism and a detection structure. When the detection head in the detection structure detects a rise in water level, the electric telescopic rod in the waterproof mechanism moves the waterproof frame upward to adjust the height of the transformer tank, preventing water from entering the transformer tank and avoiding damage to internal components. When the detection head in the detection structure is damaged, the detection head can be automatically replaced by the cooperation of the second electric telescopic rod, the first drive motor, the second drive motor, the first positioning cylinder, and the second positioning cylinder in the detection structure, making the operation more convenient. 2. This invention features a moving mechanism and a fixed structure. When installing the transformer body, the moving mechanism uses the guide wheels at the bottom of the moving frame to slide the transformer body along the guide rail. Combined with the electric push rod in the fixed structure, the two L-shaped rack plates move to both sides, causing the fixed insertion rod to pass through the fixed holes on the L-shaped fixed plate at the bottom of the moving frame and into the limiting holes on one side wall of the guide rail, thereby fixing the moving frame and ensuring the transformer body remains stable on the guide rail. Similarly, the first electric push rod drives the L-shaped rack plates to move towards each other, causing the fixed insertion rod to disengage from the fixed holes on the L-shaped fixed plate and the limiting holes on one side wall of the guide rail, making it easier for workers to install and disassemble the transformer body. 3. This invention incorporates a rain-blocking structure and a flow-guiding structure. When the rain sensor detects rain, the servo motor in the rain-blocking structure activates, causing the rain-blocking plate to rotate inward to a suitable angle, preventing rainwater from entering the transformer housing through the vents. Simultaneously, the electric cylinder in the flow-guiding structure adjusts the flow-guiding plate inward, reducing the air outlet and preventing rainwater from entering the transformer housing. When the temperature sensor inside the transformer housing detects excessively high internal temperatures, the servo motor activates, causing the rain-blocking plate to rotate outward to a suitable angle, thereby increasing the ventilation area and improving heat dissipation. Again, the electric cylinder in the flow-guiding structure adjusts the flow-guiding plate outward, increasing the air outlet and further enhancing heat dissipation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a dry-type transformer housing according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the transformer housing in an embodiment of the present invention; Figure 3 This is a schematic diagram of the bottom structure of the power transformer body in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the guide rail in an embodiment of the present invention; Figure 5 This is a schematic diagram of the rear structure of the transformer housing in an embodiment of the present invention; Figure 6 This is a schematic diagram showing the internal structure of the fixed frame in an embodiment of the present invention. Figure 7 This is a schematic diagram of the side structure of the flow guiding structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a dry-type transformer according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the waterproof frame structure in an embodiment of the present invention; Figure 10 This is an enlarged schematic diagram of the detection mechanism structure in an embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 1. Transformer housing; 2. Transformer body; 3. Guide rail; 4. Moving frame; 5. Guide wheel; 6. Cleaning brush; 7. Damper; 8. Buffer spring; 9. Stop block; 10. L-shaped rack plate; 11. Mounting frame; 12. First electric push rod; 13. Connecting plate; 14. Fixed rod; 15. L-shaped fixing plate; 16. Fixing hole; 17. Fixing frame; 18. Filter frame; 19. First filter plate; 20. Second filter plate; 21. L-shaped fixing block; 22. Pull rod; 23. Fixing column; 24. Support block; 25. Rotating shaft; 26. Rotating seat; 27. Rain shield. 28. Worm gear; 29. ​​Servo motor; 30. First gear; 31. Worm; 32. Second gear; 33. Raindrop sensor; 34. U-shaped frame; 35. Shaft; 36. Guide plate; 37. Transmission gear; 38. Electric cylinder; 39. Transmission rack; 40. Waterproof frame; 41. Base; 42. L-shaped support frame; 43. Electric telescopic rod; 44. Connecting seat; 45. Mounting bracket; 46. Detection head; 47. Second electric push rod; 48. Support plate; 49. First drive motor; 50. Mounting plate; 51. Second drive motor; 52. First positioning cylinder; 53. Second positioning cylinder. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1 —10. The present invention will be described in further detail.

[0016] This invention discloses a dry-type transformer, including a transformer housing 1, a transformer body 2 installed inside the transformer housing 1, ventilation openings near the top at both ends of the transformer housing 1, ventilation fans fixedly installed inside the ventilation openings, air outlets near the bottom at both ends of the transformer housing 1, filters installed inside the air outlets, a waterproof mechanism at the bottom of the transformer housing 1, a moving mechanism for easy installation and disassembly of the transformer body 2 inside the transformer housing 1, a fixing structure for fixing the transformer body 2 inside the transformer housing 1, a filter mechanism at both ends of the transformer housing 1 near the ventilation openings, a rainproof structure for shielding the ventilation openings in the filter mechanism, and a flow guiding structure at both ends of the transformer housing 1 near the air outlets. refer to Figure 8 ,Figure 9 and Figure 10 The waterproofing mechanism includes a waterproof frame 40 installed at the bottom of the transformer housing 1. The waterproof frame 40 is mounted on top of the base 41. Symmetrical L-shaped support frames 42 are installed on the top of the base 41 at both ends of the waterproof frame 40. An electric telescopic rod 43 is installed on the top of the L-shaped support frame 42. One end of the electric telescopic rod 43 passes through a through hole on the L-shaped support frame 42 and is connected to a connecting seat 44 provided at both ends of the waterproof frame 40. A detection structure is also installed at one end of the waterproof frame 40. The detection mechanism includes a mounting frame 45 installed at one end of the waterproof frame 40. A detection head 46 is mounted on the first L-shaped block at the bottom, and the detection head 46 is threaded onto the first L-shaped block. A second electric push rod 47 is mounted on the second L-shaped block at the top of the mounting bracket 45. One end of the second electric push rod 47 is connected to a support plate 48. A first drive motor 49 is mounted on the support plate 48. The output end of the first drive motor 49 is connected to a mounting plate 50. Symmetrical second drive motors 51 are mounted on the bottom of the mounting plate 50. The output end of one of the second drive motors 51 is connected to a first positioning cylinder 52, and the other second drive motor 51... The output end is connected to a second positioning cylinder 53. Clamping blocks are installed inside both the first positioning cylinder 52 and the second positioning cylinder 53. More specifically, when the detection head 46 in the detection mechanism detects a rise in water level, the electric telescopic rod 43 on the L-shaped support frame 42 drives the connecting seats 44 at both ends of the waterproof frame 40 to move upwards, causing the waterproof frame 40 to move the transformer housing 1 upwards to adjust its height and prevent rainwater from entering the transformer housing 1. When the detection head 46 is damaged, the second electric push rod 47 drives the support plate 48 to move downwards, causing the bottom of the mounting plate 50 to be positioned... The first positioning cylinder 52 covers the detection head 46. The clamping block inside the first positioning cylinder 52 clamps the detection head 46. The second drive motor 51 drives the first positioning cylinder 52 to rotate. Combined with the second electric push rod 47, the detection head 46 is removed. Then, the first drive motor 49 drives the mounting plate 50 to rotate, so that the second positioning cylinder 53 moves to the appropriate position. The second electric push rod 47 works, combined with another second drive motor 51, so that the second positioning cylinder 53 installs the detection head 46, thereby realizing the automatic replacement of the detection head 46 and making the operation more convenient.

[0017] refer to Figure 2 , Figure 3 and Figure 4The moving mechanism includes two symmetrical guide rails 3 installed on the bottom surface of the transformer housing 1. Symmetrical moving frames 4 are slidably mounted on the top of the two guide rails 3. The top of the moving frames 4 is fixedly connected to the bottom of the transformer body 2. Symmetrical guide wheels 5 are provided near the two end edges of the bottom of the moving frames 4, sliding within the guide rails 3. Symmetrical cleaning brushes 6 are also provided at both ends of the moving frames 4, with one end of each brush fitting against the bottom surface of the guide rail 3. A buffer assembly is also provided inside the guide rail 3 at one end of its inner wall. The buffer assembly includes a damper 7 installed on the inner wall of one end of the guide rail 3, with a buffer spring 8 looped around the damper 7. A stop block 9 is connected to the other end of the damper 7, with one side of the stop block 9 fitting against one end of the moving frame 4. The fixing structure includes components installed on the transformer housing 1. Inside the transformer housing 1, there are two symmetrical L-shaped rack plates 10. These two L-shaped rack plates 10 are slidably mounted within symmetrical mounting frames 11 on the bottom surface of the transformer housing 1. Gears mesh between the L-shaped rack plates 10, and these gears are rotatably mounted on a fixed rod on the bottom surface of the transformer housing 1. One end of one L-shaped rack plate 10 has a connecting block on its side wall, and a first electric push rod 12 is connected to one side of the connecting block. A connecting plate 13 is also connected to one end of the L-shaped rack plate 10. Several fixing rods 14 are fixedly mounted on one side of the connecting plate 13. One end of each fixing rod 14 passes through a fixing hole 16 on a symmetrical L-shaped fixing plate 15 at the bottom of the transformer body 2, and the other end of each fixing rod 14 also passes through a limiting hole on one side wall of the guide rail 3. The description of the body is as follows: When installing the transformer body 2, by moving the transformer body 2, the bottom movable frame 4 slides along the guide rail 3 to one end under the action of the guide wheel 5. During the sliding process, one end of the movable frame 4 will be in contact with the stop block 9 connected to the damper 7 connected to the inner wall of one end of the guide rail 3. Under the action of the damper 7 and the buffer spring 8, the stop block 9 can absorb the impact force generated when the movable frame 4 moves, avoiding damage to the guide rail 3 or the movable frame 4. At the same time, the cleaning brushes 6 set at both ends of the movable frame 4 can prevent dust from entering the guide rail 3. Then, the first electric push rod 12 is driven to drive one of the L-shaped rack plates 10 to slide along the mounting frame 11, and drive the gear to rotate along the fixed rod, so that the gear rotation drives the other L-shaped rack plate 10 to slide along the mounting frame 11. The movement causes the two L-shaped rack plates 10 to move to both sides, and drives the fixing rod 14 on one side of the connecting plate 13 to pass through the fixing hole 16 on the L-shaped fixing plate 15 at the bottom of the moving frame 4, and into the limiting hole on one side wall of the guide rail 3, thereby fixing the moving frame 4 and keeping the transformer body 2 stable. When the transformer body 2 is disassembled, the first electric push rod 12 drives the two L-shaped rack plates 10 to move towards each other, causing the fixing rod 14 to disengage from the guide rail 3 and the L-shaped fixing plate 15, moving the transformer body 2. Under the action of the guide wheel 5, the transformer body 2 slides out along the guide rail 3. The cleaning brushes 6 set at both ends of the moving frame 4 can clean the guide rail 3, making it easier for workers to install and disassemble the transformer body 2.

[0018] refer to Figure 6 The filtration mechanism includes a fixed frame 17 installed on the side walls at both ends of the transformer housing 1 at the ventilation openings. One end of the fixed frame 17 has an opening. A filter frame 18 is slidably installed inside the fixed frame 17. Two through slots are opened at the top of the filter frame 18, and a first filter plate 19 and a second filter plate 20 are slidably installed within these slots. An L-shaped fixing block 21 is provided at the bottom of the fixed frame 17 near one edge. A pull rod 22 is installed in a through hole at one end of the L-shaped fixing block 21. One end of the pull rod 22 is connected to a fixing post 23. A spring is connected to the bottom of the fixing post 23, and the other end of the spring is connected to the L-shaped fixing block 21. The other end of the fixing post 23 passes through the through hole at the bottom of the fixed frame 17 and into a limiting hole at the bottom of the filter frame 18. More specifically, by installing a filter frame 18 inside the fixed frame 17, the filter frame 18 is equipped with a first filter plate 19 and a second filter plate 20. The first filter plate 19 can filter dust and leaves in the outside air, and the second filter plate 20 can effectively filter particulate pollutants in the air, thereby reducing the amount of pollutants entering the transformer. At the same time, by pulling the pull rod 22, the fixed column 23 connected to one end moves downward and compresses the spring, causing the fixed column 23 to disengage from the limiting hole at the bottom of the filter frame 18. By pulling the handle at one end of the filter frame 18, it can be moved out along the opening at one end of the fixed frame 17, making it convenient for staff to replace or clean the first filter plate 19 and the second filter plate 20 installed inside the filter frame 18.

[0019] refer to Figure 5 and Figure 6The rainproof structure includes two symmetrical support blocks 24 mounted on the top of the fixed frame 17. A rotating shaft 25 is rotatably mounted in the shaft holes opened on the side walls of the two support blocks 24. A rotating seat 26 is fixedly mounted on the rotating shaft 25 between the two support blocks 24. One end of the rotating seat 26 is connected to a rainproof plate 27. Another end of the rotating shaft 25 is connected to a transmission assembly that drives the rainproof plate 27 to rotate and adjust its angle. The transmission assembly includes a worm gear 28 fixedly mounted on one end of the rotating shaft 25. A worm 31 is fitted to the bottom of the worm gear 28. A worm gear 31 is rotatably mounted between shaft holes in mounting bases located near the edges of both ends on the back of the transformer housing 1. A second gear 32 is mounted on the middle section of the worm gear 31. A servo motor 29 is fixedly mounted on a motor base located at the bottom of the worm gear 31 on the back of the transformer housing 1. A first gear 30 is mounted on the output shaft of the servo motor 29, and the first gear 30 meshes with the second gear 32. The servo motor 29 also has two connecting wires, one of which is connected to a raindrop-shaped mounting base on the top of the transformer housing 1. The sensor 33 is connected to another wire, the other end of which passes through the inside of the transformer housing 1 and is connected to a temperature sensor fixedly installed on the inner wall. More specifically, when the rain sensor 33 detects rain, the servo motor 29 operates, and the first gear 30 installed on the output shaft drives the second gear 32 installed on the worm 31 to rotate, causing the worm 31 to rotate along the shaft hole on the mounting base on the back of the transformer housing 1. At the same time, it meshes with the worm wheel 28 installed at one end of the rotating shaft 25, causing the rotating shaft 25 to rotate along the shaft holes on the two symmetrical support blocks 24 at the top of the fixed frame 17, and driving the rotating seat 26 to rotate. This causes the rain shield 27 connected to one end of the rotating seat 26 to rotate inward to adjust to a suitable angle position, thereby preventing rainwater from entering the inside of the transformer housing 1 through the vent. Similarly, when the temperature sensor installed inside the transformer housing 1 detects that the internal temperature is too high, the servo motor 29 operates, causing the rain shield 27 to rotate outward to adjust to a suitable angle position, thereby increasing the ventilation area and improving the heat dissipation effect.

[0020] refer to Figure 7The airflow guiding structure includes a U-shaped frame 34 installed at the air outlets on both end walls of the transformer housing 1. Several shafts 35 are rotatably installed in the shaft holes on the inner wall of the U-shaped frame 34. A guide plate 36 is fixedly installed on the shafts 35. One end of the shaft 35 passes through the shaft hole and is connected to a transmission gear 37. A mounting block is also provided at the top of one end of the U-shaped frame 34. An electric cylinder 38 is installed on the top of the mounting block. One end of the electric cylinder 38 is connected to a transmission rack 39. A limit block is provided on one side of the transmission rack 39. The transmission rack 39 also meshes with the transmission gear 37. More specifically, by driving the electric cylinder 38, the transmission rack 39 connected to one end moves up and down. The transmission rack 39 drives the transmission gear 37 installed at one end of the shaft 35 to rotate. This rotation of the shaft 35 drives the guide plate 36 to rotate and adjust the angle. This allows the air outlet to be increased to improve the heat dissipation effect when the internal temperature of the transformer housing 1 is too high, and also allows the air outlet to be reduced to prevent rainwater from entering the inside of the transformer housing 1.

[0021] The implementation principle of a dry-type transformer according to an embodiment of the present invention is as follows: The transformer body 2 is moved and slides along the guide rail 3 to one end under the action of the guide wheel 5. During the sliding process, the damper 7 and the buffer spring 8 absorb the impact force generated during movement, preventing damage to the guide rail 3 or the moving frame 4. At this time, the first electric push rod 12 is driven by the gears to move the two L-shaped rack plates 10 to both sides, and drives the fixing rod 14 to pass through the fixing hole 16 on the L-shaped fixing plate 15 and into the limiting hole on one side wall of the guide rail 3, thereby fixing the moving frame 4. When the rain sensor 33 senses rain, the servo motor 29 works, the first gear 30 drives the second gear 32 to rotate, and the worm gear 31 moves along the guide rail 3. The rotating shaft 25 rotates within the shaft hole on the mounting base and simultaneously meshes with the worm gear 28, causing the rotating shaft 25 to rotate along the shaft hole on the support block 24. This also causes the rain shield 27 connected to one end of the rotating base 26 to rotate inwards to adjust to a suitable angle, thus preventing rainwater from entering the transformer housing 1 through the vent. Similarly, when the temperature sensor inside the transformer housing 1 detects excessively high internal temperature, the servo motor 29 operates, causing the rain shield 27 to rotate outwards to adjust to a suitable angle, thereby increasing the ventilation area and improving heat dissipation. When the internal temperature is too high, the drive electric cylinder 38 drives the transmission rack 39 to move upwards, which in turn drives the transmission gear 37 to rotate, causing the guide plate 36 to rotate. Adjusting the angle increases the air outlet and improves heat dissipation. Similarly, during rain, driving the electric cylinder 38 causes the guide plate 36 to rotate and reduce the air outlet, preventing rainwater from entering the transformer housing 1. When disassembling the filter frame 18 inside the vent, pulling the pull rod 22 causes the fixing column 23 to disengage from the limiting hole at the bottom of the filter frame 18. By pulling the handle at one end of the filter frame 18, it can be moved out along the opening at one end of the fixing frame 17, making it convenient for staff to replace or clean the first filter plate 19 and the second filter plate 20 inside the filter frame 18. When the detection head 46 detects a rise in the water level, the electric telescopic rod 43 causes the connecting seats 44 at both ends of the waterproof frame 40 to move upward, causing the waterproof frame 40 to move the transformer housing. 1. Adjust the height upwards to prevent rainwater from entering the transformer housing 1 and causing damage to internal components. When the detection head 46 is damaged, the second electric push rod 47 operates, causing the first positioning cylinder 52 to cover the detection head 46. The clamping block inside the first positioning cylinder 52 clamps the detection head 46. The second drive motor 51 operates to drive the first positioning cylinder 52 to rotate, and in conjunction with the second electric push rod 47, the detection head 46 is removed. Then, the first drive motor 49 operates, causing the second positioning cylinder 53 to move to the appropriate position. The second electric push rod 47 operates, and in conjunction with another second drive motor 51, the second positioning cylinder 53 installs the detection head 46, thereby realizing the automatic replacement of the detection head 46 and making the operation more convenient.

[0022] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dry-type transformer, comprising a transformer housing (1), wherein a transformer body (2) is installed inside the transformer housing (1), ventilation openings are provided at both ends of the transformer housing (1) near the top, ventilation fans are fixedly installed inside the ventilation openings, and air outlets are provided at both ends of the transformer housing (1) near the bottom, with filters installed inside the air outlets, characterized in that: The bottom of the transformer housing (1) is provided with a waterproof mechanism. The inside of the transformer housing (1) is provided with a moving mechanism that facilitates the installation and disassembly of the transformer body (2). The inside of the transformer housing (1) is also provided with a fixing structure for fixing the transformer body (2). The two ends of the transformer housing (1) are provided with a filter mechanism at the ventilation opening. The filter mechanism is provided with a rainproof structure to cover the ventilation opening. The two side walls of the transformer housing (1) are provided with a flow guiding structure at the air outlet. The waterproof mechanism includes a waterproof frame (40) installed at the bottom of the transformer housing (1). The waterproof frame (40) is installed on the top of the base (41). Symmetrical L-shaped support frames (42) are installed at the two ends of the waterproof frame (40) on the top of the base (41). An electric telescopic rod (43) is installed on the top of the L-shaped support frame (42). One end of the electric telescopic rod (43) passes through the through hole on the L-shaped support frame (42) and is connected to the connecting seats (44) provided at both ends of the waterproof frame (40). A detection structure is also installed at one end of the waterproof frame (40). The detection mechanism includes a mounting frame (45) installed at one end of the waterproof frame (40). A detection head (46) is installed on the first L-shaped block provided at the bottom of the mounting frame (45). The detection head (46) is threadedly installed between the detection head (46) and the first L-shaped block. A second electric push rod (47) is installed on the second L-shaped block at the top of the mounting bracket (45). One end of the second electric push rod (47) is connected to a support plate (48). A first drive motor (49) is installed on the support plate (48). The output end of the first drive motor (49) is connected to a mounting plate (50). Symmetrical second drive motors (51) are installed at the bottom of the mounting plate (50). The output end of one of the second drive motors (51) is connected to a first positioning cylinder (52), and the output end of the other second drive motor (51) is connected to a second positioning cylinder (53). Clamping blocks are installed inside the first positioning cylinder (52) and the second positioning cylinder (53).

2. A dry-type transformer according to claim 1, characterized in that: The moving mechanism includes two symmetrical guide rails (3) installed on the bottom surface of the transformer housing (1). A symmetrical moving frame (4) is slidably installed on the top of the two guide rails (3). The top of the moving frame (4) is fixedly connected to the bottom of the transformer body (2). A symmetrical guide wheel (5) is provided near the two ends of the bottom of the moving frame (4). The guide wheel (5) slides in the guide rail (3). A symmetrical cleaning brush (6) is also provided at both ends of the moving frame (4). One end of the cleaning brush (6) is in contact with the bottom surface of the guide rail (3). A buffer assembly is also provided inside the guide rail (3) at one end of the inner wall. The buffer assembly includes a damper (7) installed on the inner wall of one end of the guide rail (3). A buffer spring (8) is ringed on the damper (7). A stop block (9) is connected to the other end of the damper (7). One side of the stop block (9) is in contact with one end of the moving frame (4).

3. A dry-type transformer according to claim 1, characterized in that: The fixing structure includes two symmetrical L-shaped rack plates (10) installed inside the transformer housing (1). The two L-shaped rack plates (10) are slidably installed in a symmetrical mounting frame (11) set on the bottom surface of the transformer housing (1). Gears mesh between the L-shaped rack plates (10). The gears are rotatably installed on a fixing rod set on the bottom surface of the transformer housing (1). A connecting block is set on one side wall of one of the L-shaped rack plates (10). A first electric push rod (12) is connected to one side of the connecting block. A connecting plate (13) is also connected to one end of the L-shaped rack plate (10). Several fixing rods (14) are fixedly installed on one side of the connecting plate (13). One end of the fixing rod (14) passes through a fixing hole (16) on a symmetrical L-shaped fixing plate (15) set at the bottom of the transformer body (2). One end of the fixing rod (14) also passes into a limiting hole opened on one side wall of the guide rail (3).

4. A dry-type transformer according to claim 1, characterized in that: The filtering mechanism includes a fixed frame (17) installed on the side walls of both ends of the transformer housing (1) at the ventilation openings. One end of the fixed frame (17) has an opening. A filter frame (18) is slidably installed inside the fixed frame (17). Two through slots are opened on the top of the filter frame (18). A first filter plate (19) and a second filter plate (20) are slidably installed in the through slots. An L-shaped fixing block (21) is provided at the bottom of the fixed frame (17) near one edge. A pull rod (22) is installed in the through hole opened at one end of the L-shaped fixing block (21). One end of the pull rod (22) is connected to a fixing post (23). A spring is connected to the bottom of the fixing post (23). The other end of the spring is connected to the L-shaped fixing block (21). The other end of the fixing post (23) passes through the through hole opened at the bottom of the fixed frame (17) and enters the limiting hole opened at the bottom of the filter frame (18).

5. A dry-type transformer according to claim 1, characterized in that: The rainproof structure includes two symmetrical support blocks (24) installed on the top of the fixed frame (17). A rotating shaft (25) is rotatably installed in the shaft hole opened on the side wall of the two support blocks (24). A rotating seat (26) is fixedly installed on the rotating shaft (25) between the two support blocks (24). One end of the rotating seat (26) is connected to a rainproof plate (27). One end of the rotating shaft (25) is also connected to a transmission component that drives the rainproof plate (27) to rotate and adjust the angle.

6. A dry-type transformer according to claim 5, characterized in that: The transmission assembly includes a worm gear (28) fixedly installed at one end of a rotating shaft (25). A worm (31) is fitted to the bottom of the worm gear (28). The worm (31) is rotatably installed between shaft holes on a mounting base located near the two ends of the back of the transformer housing (1). A second gear (32) is installed on the worm (31) at the middle section. A servo motor (29) is fixedly installed on a motor base located at the bottom of the worm (31) on the back of the transformer housing (1). A first gear (30) is installed on the output shaft of the servo motor (29). The first gear (30) meshes with the second gear (32). The servo motor (29) is also provided with two connecting wires. The other end of one connecting wire is connected to a rain sensor (33) located on the top of the transformer housing (1). The other end of the other connecting wire passes into the interior of the transformer housing (1) and is connected to a temperature sensor fixedly installed on the inner wall.

7. A dry-type transformer according to claim 1, characterized in that: The flow guiding structure includes a U-shaped frame (34) installed at the air outlets on both ends of the transformer housing (1). Several shafts (35) are rotatably installed in the shaft holes on the inner wall of the U-shaped frame (34). A flow guide plate (36) is fixedly installed on the shaft (35). One end of the shaft (35) passes through the shaft hole and is connected to a transmission gear (37). A mounting block is also provided at the top of one end of the U-shaped frame (34). An electric cylinder (38) is installed on the top of the mounting block. A transmission rack (39) is connected to one end of the electric cylinder (38). A limit block is provided on one side of the transmission rack (39). The transmission rack (39) also meshes with the transmission gear (37).

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