A box-type combined power transformer

Abstract

The application discloses a box type combined power transformer and relates to the technical field of power transformers. The box type combined power transformer comprises a box body. A combined transformer is fixedly installed on the inner wall of the box body. The box body is used for placing and protecting the combined transformer. A radiator is fixedly installed on the top of the box body. A top plate is fixedly installed on the top of the box body and used for protecting the radiator. The radiator is used for radiating the inner wall of the box body. The combined transformer is fixedly installed on the inner wall of the box body. Rainwater automatically flows through the radiator pipe and enhances heat dissipation, so that the temperature inside the box body can be effectively reduced, the heat dissipation effect of the combined transformer is improved, the risk of combined transformer failure caused by overheating is reduced, and thus the reliability and service life of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of power transformer technology, specifically to a box-type combined power transformer. Background Technology

[0002] As a complete set of power distribution equipment, the box-type transformer is an organic combination of transformer, high-voltage control equipment, and low-voltage control equipment.

[0003] Patent publication number CN111739712B relates to the field of power transformer technology, including a box-type transformer body. The inner wall of the box-type transformer body is fixedly connected with galvanized plates, and a transformer chamber is located between two galvanized plates. A high-voltage chamber is located on the left side of the transformer chamber, and a low-voltage chamber is located on the right side. This patent utilizes an exhaust fan, a suction pipe, and a guide plate to effectively expel heat from inside the box-type transformer body. Then, through the cooperation of a cooler, an air inlet pipe, an air pump, a blowing pipe, and the guide plate, cool air is blown into the interior of the box-type transformer body, effectively cooling its interior. The use of a cooling fan accelerates the flow of cool air inside the box-type transformer body, thereby improving the heat dissipation effect and extending the service life of the box-type transformer body.

[0004] The aforementioned patent can accelerate the flow of cold air inside the box-type transformer body, thereby improving the heat dissipation effect of the box-type transformer body and extending its service life. However, when the external rainfall is too heavy, rainwater may enter the inner wall of the box through the heat dissipation holes. If rainwater enters the inner wall of the box, it will cause a short circuit in the electrical components inside the box, damaging the electrical components inside the box. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a box-type combined power transformer, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a box-type combined power transformer, comprising a box housing:

[0007] The enclosure has a modular transformer fixedly installed on its inner wall, and the enclosure is used to house and protect the modular transformer.

[0008] A top plate is fixedly installed on the top of the housing, and a radiator is provided on the top of the housing. The top plate is used to protect the radiator.

[0009] A radiator, used to dissipate heat from the inner wall of the housing;

[0010] The outer wall of the enclosure is also equipped with a heat dissipation device, which includes a water storage tank, a drain pipe, a heat dissipation pipe, a pressure plate, and a baffle. The water storage tank is fixedly installed on the outer wall of the enclosure, the drain pipe is fixedly installed on the side of the water storage tank away from the enclosure, the heat dissipation pipe is fixedly installed on the inner wall of the enclosure and is connected to the water storage tank, the pressure plate is slidably installed on the inner wall of the water storage tank, and the baffle is fixedly installed on the top of the pressure plate. By automatically allowing rainwater to flow through the heat dissipation pipe and enhancing heat dissipation, the internal temperature of the enclosure can be effectively reduced, the heat dissipation effect of the combined transformer can be improved, the risk of combined transformer failure caused by overheating can be reduced, thereby improving the reliability and service life of the equipment.

[0011] According to the above technical solution, the heat dissipation device further includes a rotating plate, a pressure rod, and a push rod. The push rod is fixedly installed at the bottom of the pressure plate and slides through the bottom of the water storage tank. The pressure rod is slidably installed on the side of the housing near the push rod, and the push rod is fixedly connected to the pressure rod. A heat dissipation hole is provided on the side of the housing near the pressure rod. The rotating plate is rotatably installed on the inner wall of the heat dissipation hole, and the pressure rod is rotatably connected to the rotating plate. When the rotating plate rotates downward, the opening of the heat dissipation hole will narrow, thereby effectively preventing external rainwater from entering the housing and protecting the housing and internal equipment from moisture or water damage. Especially for electrical equipment, water ingress may cause short circuits or damage. This design can effectively reduce this risk.

[0012] According to the above technical solution, a round hole is provided on the side of the baffle near the drain pipe. The shape of the round hole matches the shape of the drain pipe and the shape of the heat dissipation pipe. A spring is provided between the pressure plate and the water storage tank. The spring is provided so that the pressure plate can be driven back to its original position after the rainwater inside the water storage tank is discharged.

[0013] According to the above technical solution, the outer wall of the enclosure is further provided with a blocking device for preventing rainwater from contacting the radiator and a collection device for collecting impurities on the radiator surface. The blocking device includes a rotating plate, a locking rod, a locking groove, and a fixing plate. The rotating plate is rotatably mounted on the top of the enclosure. The locking rod is fixedly mounted on the side of the baffle near the rotating plate. The locking groove is fixedly mounted on the side of the rotating plate near the baffle. The locking rod contacts the inner wall of the locking groove. The fixing plate is fixedly mounted on the top of the enclosure. This mainly prevents rainwater from flowing directly into the radiator, protecting the radiator from rainwater and improving the stability and lifespan of the equipment. In addition, by increasing the height of the top of the enclosure, it may also effectively prevent water from flowing through the radiator into the enclosure and damaging the equipment inside the enclosure.

[0014] According to the above technical solution, the blocking device further includes a pressing plate, a sliding plate, a controller, a motor, a reciprocating screw, and a scraper. The pressing plate is fixedly installed on the side of the rotating plate away from the slot, and the sliding plate is slidably installed on the side of the fixed plate close to the pressing plate. The controller is located on the top of the housing, the motor is fixedly installed on the top of the housing, and the reciprocating screw is fixedly installed on the output end of the motor. A groove is formed on the surface of the reciprocating screw, and the scraper is slidably installed on the inner wall of the groove. Impurities and moisture in the air accumulate on the surface of the radiator over a long period of time, forming a dirt layer that affects the heat dissipation effect and performance of the radiator. The scraper can effectively remove these impurities, prevent the formation of a dirt layer, and ensure that the radiator can maintain optimal heat dissipation performance.

[0015] According to the above technical solution, the control terminal of the controller is electrically connected to the motor. A torsion spring is provided between the rotating plate and the housing. The torsion spring is provided to drive the rotating plate to rotate after the limit of the rotating plate is released. A second spring is provided between the sliding plate and the fixed plate. The second spring is provided to drive the sliding plate to return to its original position when the rotating plate returns to its original position.

[0016] According to the above technical solution, the collection device includes a storage frame, a fixed scraper, and a drawer. The storage frame is fixedly installed on the top of the housing, the fixed scraper is fixedly installed on the top of the storage frame, and the drawer is slidably installed on the inner wall of the storage frame. The side of the fixed scraper that is close to the scraper is set as an inclined surface, which scrapes off the impurities on the surface of the scraper so that the impurities on the surface of the scraper fall into the drawer for collection. This prevents the scraper from moving the impurities on the surface of the scraper back to their original position when it resets. This can prevent the impurities from being brought back to the surface of the radiator due to inertia or other reasons when resetting. This ensures that the surface of the radiator can be kept clean for a long time and avoids the heat dissipation effect from the re-accumulation of dirt.

[0017] According to the above technical solution, the collection device further includes a rotating pressure rod, a sliding rod, a sliding pressure plate, a rotating pressure plate, and a compaction plate. The rotating pressure rod is fixedly installed at the end of the reciprocating screw away from the motor. The sliding rod is slidably installed on the inner wall of the storage frame. A square groove is opened on the side of the drawer near the sliding rod. The shape of the sliding rod matches the square groove. The sliding pressure plate is slidably installed on the inner wall of the drawer. The rotating pressure plate is rotatably installed on the inner wall of the drawer. The compaction plate is slidably installed on the inner wall of the drawer. By squeezing, some moisture in the impurities can be removed, making the impurities more compact and solid. In this way, the impurities will not be dispersed again due to the influence of external airflow after drying, avoiding the impurities from re-adhering to the surface of the radiator and affecting its heat dissipation effect. This can greatly reduce the risk of secondary pollution and ensure that the surface of the radiator remains clean for a long time.

[0018] According to the above technical solution, a No. 3 spring is provided between the sliding rod and the storage frame. The No. 3 spring is provided to drive the sliding rod to reset after the rotating pressure rod loses contact with the sliding rod. A No. 4 spring is provided between the sliding pressure plate and the drawer. The No. 4 spring is provided to drive the sliding pressure plate to reset after the sliding rod releases contact with the sliding pressure plate. The side of the sliding rod and the sliding pressure plate that is close to each other is set as an inclined surface. The inclined surface of the sliding rod and the sliding pressure plate is provided to facilitate the sliding rod to push the sliding pressure plate to move. A No. 2 torsion spring is provided between the rotating pressure plate and the drawer. The No. 2 torsion spring is provided to drive the rotating pressure plate back to its original position when the sliding pressure plate resets and releases its pressure on the rotating pressure plate. A No. 5 spring is provided between the compaction plate and the inner wall of the drawer. The No. 5 spring is provided to drive the compaction plate to reset when the rotating pressure plate resets and releases its push on the compaction plate.

[0019] This invention provides a box-type combined power transformer. It has the following advantages:

[0020] (1) In this invention, the downward rotation of the rotating plate will reduce the opening of the heat dissipation hole, thereby effectively preventing external rainwater from entering the cabinet and protecting the cabinet and internal equipment from moisture or water damage. In particular, for electrical equipment, water may cause short circuits or damage. This design can effectively reduce this risk.

[0021] (2) In this invention, the rotation of the rotating plate increases the height of the top of the box, which prevents rainwater inside the water tank from spreading towards the radiator and also prevents rainwater from being blown by the wind and spreading towards the radiator. The main effect is to prevent rainwater from flowing directly into the radiator, protect the radiator from the influence of rainwater, and improve the stability and life of the equipment. In addition, by increasing the height of the top of the box, water flow can also be prevented from flowing directly into the box through the radiator and causing damage to the internal equipment.

[0022] (3) In this invention, the reciprocating screw rotation will drive the scraper to move away from the motor. The scraper will scrape and clean the impurities on the surface of the radiator, preventing impurities in the air from adhering to the radiator surface due to excessive humidity during rainy weather. The long-term accumulation of impurities and moisture in the air on the radiator surface will form a dirt layer, affecting the heat dissipation effect and performance of the radiator. The scraper can effectively remove these impurities, prevent the formation of a dirt layer, and ensure that the radiator can maintain the best heat dissipation performance.

[0023] (4) In this invention, the impurities on the surface of the scraper are scraped off and fall into the drawer for collection, so as to prevent the impurities on the surface of the scraper from moving back to their original position when the scraper is reset. This can prevent the impurities from being brought back to the surface of the radiator due to inertia or other reasons when the radiator is reset, which ensures that the surface of the radiator can be kept clean for a long time and avoids the heat dissipation effect from the re-accumulation of dirt.

[0024] (5) In this invention, rotating the pressure plate will push the compaction plate to slide away from the sliding rod, and the compaction plate will squeeze the impurities that fall into the drawer. By squeezing, some of the moisture in the impurities can be removed, making the impurities more compact and solid. In this way, the impurities will not be dispersed again due to the influence of external airflow after drying, and the impurities will not re-attach to the surface of the radiator, affecting its heat dissipation effect. This can greatly reduce the risk of secondary pollution and ensure that the surface of the radiator remains clean for a long time. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram showing the position and structure of the housing and combined transformer of the present invention;

[0027] Figure 3 This is a schematic diagram of the position structure of the rotating plate and pressure bar of the present invention;

[0028] Figure 4 This is a schematic diagram of the rotating plate and slot position structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the position structure of the reciprocating lead screw and scraper plate of the present invention;

[0030] Figure 6 This is a schematic diagram of the storage frame and fixed scraper position structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the position structure of the rotating pressure plate and the compaction plate of the present invention.

[0032] In the diagram: 1. Box body; 2. Top plate; 3. Water storage tank; 4. Radiator; 5. Combined transformer; 6. Drain pipe; 7. Rotating plate; 8. Pressure rod; 9. Push rod; 10. Heat dissipation pipe; 11. Pressure plate; 12. Baffle; 21. Rotating plate; 22. Locking rod; 23. Locking slot; 24. Fixing plate; 25. Pressing plate; 26. Sliding plate; 27. Controller; 28. Motor; 29. ​​Reciprocating screw; 291. Scraper; 31. Storage frame; 32. Fixed scraper; 33. Rotating pressure rod; 34. Sliding rod; 35. Drawer box; 36. Sliding pressure plate; 37. Rotating pressure plate; 38. Compacting plate. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1-7 One embodiment of the present invention is: a box-type combined power transformer, including a box 1:

[0035] Box 1, with a combined transformer 5 fixedly installed on the inner wall of box 1, box 1 is used to house and protect the combined transformer 5;

[0036] Top plate 2 is fixedly installed on the top of the box 1. A radiator 4 is provided on the top of the box 1. The top plate 2 is used to protect the radiator 4.

[0037] Radiator 4 is used to dissipate heat from the inner wall of the housing 1.

[0038] The outer wall of the enclosure 1 is also equipped with a heat dissipation device, which includes a water storage tank 3, a drain pipe 6, a heat dissipation pipe 10, a pressure plate 11, and a baffle 12. The water storage tank 3 is fixedly installed on the outer wall of the enclosure 1, the drain pipe 6 is fixedly installed on the side of the water storage tank 3 away from the enclosure 1, the heat dissipation pipe 10 is fixedly installed on the inner wall of the enclosure 1 and is connected to the water storage tank 3, the pressure plate 11 is slidably installed on the inner wall of the water storage tank 3, and the baffle 12 is fixedly installed on the top of the pressure plate 11. By automatically allowing rainwater to flow through the heat dissipation pipe 10 and enhancing heat dissipation, the internal temperature of the enclosure 1 can be effectively reduced, the heat dissipation effect of the combined transformer 5 can be improved, the risk of failure of the combined transformer 5 due to overheating can be reduced, thereby improving the reliability and service life of the equipment.

[0039] The heat dissipation device also includes a rotating plate 7, a pressure rod 8, and a push rod 9. The push rod 9 is fixedly installed at the bottom of the pressure plate 11 and slides through the bottom of the water storage tank 3. The pressure rod 8 is slidably installed on the side of the housing 1 near the push rod 9 and is fixedly connected to the pressure rod 8. A heat dissipation hole is provided on the side of the housing 1 near the pressure rod 8. The rotating plate 7 is rotatably installed on the inner wall of the heat dissipation hole. The pressure rod 8 is rotatably connected to the rotating plate 7. Rotating the rotating plate 7 downward will reduce the opening of the heat dissipation hole, thereby effectively preventing rainwater from entering the housing 1 and protecting the housing 1 and the internal equipment from moisture or water damage. Especially for electrical equipment, water ingress may cause short circuits or damage. This design can effectively reduce this risk.

[0040] A round hole is provided on the side of the baffle 12 near the drain pipe 6. The shape of the round hole matches the shape of the drain pipe 6 and the shape of the round hole matches the shape of the heat dissipation pipe 10. A spring is provided between the pressure plate 11 and the water storage tank 3. The spring is provided so that the pressure plate 11 can be driven back to its original position after the rainwater inside the water storage tank 3 is discharged.

[0041] In this embodiment, during operation: the combined transformer 5 generates a large amount of heat, which is stored inside the housing 1. When the heat inside the housing 1 becomes excessive, the radiator 4 cools the interior of the housing 1. When it begins to rain, the top plate 2 blocks the rainwater to prevent it from affecting the radiator 4. The rainwater slides down the top plate 2 into the water storage tank 3 and is discharged through the drain pipe 6. When the collection rate of the water in the water storage tank 3 exceeds the discharge rate, the rainwater accumulates inside. When too much rainwater is stored, the rainwater in the water storage tank 3 pushes the pressure plate 11 downwards. As the pressure plate 11 slides downwards, it pushes the push rod 9 downwards. The downward movement of the push rod 9 pushes the pressure rod 8 downwards, which in turn causes the rotating plate 7 to rotate downwards. The downward rotation of the rotating plate 7 reduces the opening of the heat dissipation holes, effectively preventing rainwater from entering the housing 1 and protecting the housing. The enclosure 1 and its internal equipment are protected from moisture or water damage. In particular, for electrical equipment, moisture ingress can lead to short circuits or damage. This design effectively reduces this risk. When the pressure plate 11 slides down, it moves the baffle 12. The movement of the baffle 12 moves the circular hole, which disconnects from the drain pipe 6, preventing rainwater from draining out. The downward movement of the circular hole also releases the seal on the heat dissipation pipe 10, allowing rainwater to flow through it. Since the heat dissipation pipe 10 is installed on the inner wall of the enclosure 1, rainwater will pass through the interior of the enclosure 1 when it is discharged from the heat dissipation pipe 10. This rainwater discharge enhances the heat dissipation inside the enclosure 1. By automatically flowing rainwater through the heat dissipation pipe 10 and enhancing heat dissipation, the temperature inside the enclosure 1 can be effectively reduced, improving the heat dissipation effect of the combined transformer 5 and reducing the risk of failure of the combined transformer 5 due to overheating, thereby improving the reliability and service life of the equipment.

[0042] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the outer wall of the housing 1 is further provided with a blocking device for preventing rainwater from contacting the radiator 4 and a collection device for collecting impurities on the surface of the radiator 4. The blocking device includes a rotating plate 21, a locking rod 22, a locking groove 23, and a fixing plate 24. The rotating plate 21 is rotatably mounted on the top of the housing 1, the locking rod 22 is fixedly mounted on the side of the baffle 12 near the rotating plate 21, the locking groove 23 is fixedly mounted on the side of the rotating plate 21 near the baffle 12, the locking rod 22 contacts the inner wall of the locking groove 23, and the fixing plate 24 is fixedly mounted on the top of the housing 1. This is mainly to prevent rainwater from flowing directly into the radiator 4, protecting the radiator 4 from the influence of rainwater, and improving the stability and lifespan of the equipment. In addition, by increasing the height of the top of the housing 1, it is also possible to effectively prevent water from flowing through the radiator 4 into the housing 1 and causing damage to the equipment inside the housing 1.

[0043] The blocking device also includes a pressure plate 25, a sliding plate 26, a controller 27, a motor 28, a reciprocating screw 29, and a scraper 291. The pressure plate 25 is fixedly installed on the side of the rotating plate 21 away from the slot 23. The sliding plate 26 is slidably installed on the side of the fixed plate 24 near the pressure plate 25. The controller 27 is located on the top of the housing 1. The motor 28 is fixedly installed on the top of the housing 1. The reciprocating screw 29 is fixedly installed on the output end of the motor 28. A groove is opened on the surface of the reciprocating screw 29. The scraper 291 is slidably installed on the inner wall of the groove. Impurities and moisture in the air accumulate on the surface of the radiator 4 over a long period of time, forming a dirt layer that affects the heat dissipation effect and performance of the radiator 4. The scraper 291 can effectively remove these impurities, prevent the formation of a dirt layer, and ensure that the radiator 4 can maintain the best heat dissipation performance.

[0044] The control terminal of the controller 27 is electrically connected to the motor 28. A torsion spring is provided between the rotating plate 21 and the housing 1. The torsion spring is provided to drive the rotating plate 21 to rotate after the limit of the rotating plate 21 is released. A second spring is provided between the sliding plate 26 and the fixed plate 24. The second spring is provided to drive the sliding plate 26 to return to its original position when the rotating plate 21 returns to its original position.

[0045] The collection device includes a storage frame 31, a fixed scraper 32, and a drawer 35. The storage frame 31 is fixedly installed on the top of the housing 1, the fixed scraper 32 is fixedly installed on the top of the storage frame 31, and the drawer 35 is slidably installed on the inner wall of the storage frame 31. The side of the fixed scraper 32 that is close to the scraper 291 is set as an inclined surface to scrape off the impurities on the surface of the scraper 291 and make them fall into the drawer 35 for collection. This prevents the scraper 291 from moving the impurities on its surface back to their original position when it is reset. This can prevent the impurities from being brought back to the surface of the radiator 4 due to inertia or other reasons when it is reset. This ensures that the surface of the radiator 4 can be kept clean for a long time and avoids the heat dissipation effect from the re-accumulation of dirt.

[0046] The collection device also includes a rotating pressure rod 33, a sliding rod 34, a sliding pressure plate 36, a rotating pressure plate 37, and a compaction plate 38. The rotating pressure rod 33 is fixedly installed at the end of the reciprocating screw 29 away from the motor 28. The sliding rod 34 is slidably installed on the inner wall of the storage frame 31. A square groove is opened on the side of the drawer 35 near the sliding rod 34, and the shape of the sliding rod 34 matches the square groove. The sliding pressure plate 36 is slidably installed on the inner wall of the drawer 35. The rotating pressure plate 37 is rotatably installed on the inner wall of the drawer 35. The compaction plate 38 is slidably installed on the inner wall of the drawer 35. By squeezing, some of the moisture in the impurities can be removed, making the impurities more compact and solid. In this way, the impurities will not be dispersed again due to the influence of external airflow after drying, and the impurities will not re-adhere to the surface of the radiator 4, affecting its heat dissipation effect. This can greatly reduce the risk of secondary pollution and ensure that the surface of the radiator 4 remains clean for a long time.

[0047] A third spring is provided between the sliding rod 34 and the storage frame 31. The third spring is provided to drive the sliding rod 34 to reset after the rotating pressure rod 33 loses contact with the sliding rod 34. A fourth spring is provided between the sliding pressure plate 36 and the drawer 35. The fourth spring is provided to drive the sliding pressure plate 36 to reset after the sliding rod 34 releases contact with the sliding pressure plate 36. The side of the sliding rod 34 and the sliding pressure plate 36 that are close to each other is set as an inclined surface. The inclined surface of the sliding rod 34 and the sliding pressure plate 36 is provided to facilitate the sliding rod 34 to push the sliding pressure plate 36 to move. A second torsion spring is provided between the rotating pressure plate 37 and the drawer 35. The second torsion spring is provided to drive the rotating pressure plate 37 back to its original position when the sliding pressure plate 36 resets and releases its pressure on the rotating pressure plate 37. A fifth spring is provided between the compaction plate 38 and the inner wall of the drawer 35. The fifth spring is provided to drive the compaction plate 38 to reset when the rotating pressure plate 37 resets and releases its pressure on the compaction plate 38.

[0048] In this embodiment, when the pressure plate 11 slides downward, it drives the locking rod 22 to move. As the locking rod 22 moves downward, it loses contact with the inner wall of the slot 23, thus releasing the locking rod 22's restriction on the slot 23. This release of the slot 23's restriction also releases the restriction on the rotating plate 21. The release of the rotating plate 21's restriction causes the first torsion spring to rotate the rotating plate 21 away from the water storage tank 3. The rotation of the rotating plate 21 increases the height of the top of the housing 1, preventing rainwater inside the water storage tank 3 from spreading towards the radiator 4, and also preventing external rainwater from being blown by the wind towards the radiator 4. The main effect is to prevent rainwater from directly flowing into the radiator 4, protecting the radiator 4 from rainwater and improving the stability and lifespan of the equipment. Furthermore, by increasing the height of the top of the housing 1, it also effectively prevents water from flowing into the housing 1 through the radiator 4, thus protecting the interior of the housing 1. Damage to the equipment will be caused by the rotation of the rotating plate 21, which will drive the pressure plate 25 to move. The movement of the pressure plate 25 will push the sliding plate 26 to slide downward. The downward movement of the sliding plate 26 will press the control terminal of the controller 27. The pressurization of the control terminal of the controller 27 will start the motor 28. The start of the motor 28 will drive the reciprocating screw 29 to rotate. The rotation of the reciprocating screw 29 will drive the scraper plate 291 to move away from the motor 28. The scraper plate 291 will scrape and clean the impurities on the surface of the radiator 4. This will prevent impurities in the air from adhering to the surface of the radiator 4 due to excessive humidity in rainy weather. The long-term accumulation of impurities and moisture in the air on the surface of the radiator 4 will form a dirt layer, which will affect the heat dissipation effect and performance of the radiator 4. The scraper plate 291 can effectively remove these impurities, prevent the formation of a dirt layer, and ensure that the radiator 4 can maintain the best heat dissipation performance.

[0049] When the scraper 291 moves away from the motor 28 to clean impurities on the surface of the radiator 4, it comes into contact with the inclined surface of the fixed scraper 32. The fixed scraper 32 then scrapes the inclined surface of the scraper 291, removing impurities from the surface of the scraper 291 and causing them to fall into the collection box 35. This prevents the scraper 291 from moving impurities back to their original position when it resets, thus avoiding the impurities being carried back to the surface of the radiator 4 due to inertia or other reasons. This ensures that the surface of the radiator 4 remains clean for a long time, preventing the heat dissipation effect from being affected by the re-accumulation of dirt. When the reciprocating screw 29 rotates, it drives the rotating pressure rod 33 to rotate. The rotating pressure rod 33 comes into contact with the inclined surface of the sliding rod 34, which then pushes the sliding rod 34 to slide closer to the sliding pressure plate 36. The sliding rod 34 then comes into contact with the inclined surface of the sliding pressure plate 36. The sliding rod 34 will push the sliding pressure plate 36 to slide downwards. The sliding pressure plate 36 will press the rotating pressure plate 37 to rotate away from the sliding rod 34. The rotating pressure plate 37 will push the compaction plate 38 to slide away from the sliding rod 34. The compaction plate 38 will then squeeze the impurities that fall into the drawer 35. Because the impurities contain a lot of moisture, they can be compacted and shaped by squeezing. This prevents the impurities from being blown away from the drawer 35 and adhering to the surface of the radiator 4 after drying due to the influence of external airflow. By squeezing, some of the moisture in the impurities can be removed, making the impurities more compact and solid. This way, the impurities will not be dispersed again due to the influence of external airflow after drying, and the impurities will not re-adhere to the surface of the radiator 4, affecting its heat dissipation effect. This can greatly reduce the risk of secondary pollution and ensure that the surface of the radiator 4 remains clean for a long time.

[0050] 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 box type combined power transformer, comprising a box (1), characterized in that: the box (1) is internally provided with a combined transformer (5) fixedly installed on the inner wall of the box (1) for placing and protecting the combined transformer (5); a top plate (2) is fixedly installed on the top of the box (1), and the top of the box (1) is provided with a radiator (4), and the top plate (2) is used for protecting the radiator (4); the radiator (4) is used for radiating the inner wall of the box (1); the outer wall of the box (1) is further provided with a heat dissipation device, the heat dissipation device comprises a water storage tank (3), a drain pipe (6), a heat dissipation pipe (10), a pressing plate (11) and a baffle (12), the water storage tank (3) is fixedly installed on the outer wall of the box (1), the drain pipe (6) is fixedly installed on the side of the water storage tank (3) away from the box (1), the heat dissipation pipe (10) is fixedly installed on the inner wall of the box (1), the heat dissipation pipe (10) is in communication with the water storage tank (3), the pressing plate (11) is slidingly installed on the inner wall of the water storage tank (3), and the baffle (12) is fixedly installed on the top of the pressing plate (11); wherein the outer wall of the box (1) is further provided with a blocking device for blocking rainwater from contacting the radiator (4) and a collecting device for collecting impurities on the surface of the radiator (4); the blocking device comprises a rotating plate (21), a clamping rod (22), a clamping groove (23) and a fixed plate (24), the rotating plate (21) is rotatably installed on the top of the box (1), the clamping rod (22) is fixedly installed on the side of the baffle (12) close to the rotating plate (21), the clamping groove (23) is fixedly installed on the side of the rotating plate (21) close to the baffle (12), the clamping rod (22) is in contact with the inner wall of the clamping groove (23), and the fixed plate (24) is fixedly installed on the top of the box (1); the blocking device further comprises a pressing plate (25), a sliding plate (26), a controller (27), a motor (28), a reciprocating wire rod (29) and a scraping plate (291), the pressing plate (25) is fixedly installed on the side of the rotating plate (21) away from the clamping groove (23), the sliding plate (26) is slidingly installed on the side of the fixed plate (24) close to the pressing plate (25), the controller (27) is arranged on the top of the box (1), the motor (28) is fixedly installed on the top of the box (1), the reciprocating wire rod (29) is fixedly installed on the output end of the motor (28), the reciprocating wire rod (29) is provided with a sliding groove on the surface thereof, and the scraping plate (291) is slidingly installed on the inner wall of the sliding groove.

2. A box-type assembled power transformer according to claim 1, characterized in that: The heat dissipation device further includes a rotating plate (7), a pressing rod (8) and a push rod (9), the push rod (9) is fixedly installed at the bottom of the pressing plate (11), the push rod (9) is slidably penetrated through the bottom of the water storage tank (3), the pressing rod (8) is slidably installed at one side of the box (1) close to the push rod (9), the push rod (9) is fixedly connected with the pressing rod (8), one side of the box (1) close to the pressing rod (8) is provided with a heat dissipation hole, the rotating plate (7) is rotatably installed on the inner wall of the heat dissipation hole, and the pressing rod (8) is rotatably connected with the rotating plate (7).

3. A box-type assembled power transformer according to claim 2, characterized in that: The baffle (12) is provided with a circular hole at one side close to the drain pipe (6), the shape of the circular hole is matched with the shape of the drain pipe (6), the shape of the circular hole is matched with the shape of the heat dissipation pipe (10), and a spring is arranged between the pressing plate (11) and the water storage tank (3).

4. A box-type combined power transformer according to claim 3, characterized in that: The control end of the controller (27) is electrically connected with the motor (28), a torsional spring is arranged between the rotating plate (21) and the box (1), and a spring is arranged between the sliding plate (26) and the fixed plate (24).

5. A box-type combined electrical transformer according to claim 4, characterized in that: The collecting device includes a storage frame (31), a fixed scraper (32) and a suction box (35), the storage frame (31) is fixedly installed at the top of the box (1), the fixed scraper (32) is fixedly installed at the top of the storage frame (31), the suction box (35) is slidably installed on the inner wall of the storage frame (31), and one side of the fixed scraper (32) and the scraping plate (291) close to each other is provided as an inclined surface.

6. A box-type assembled power transformer according to claim 5, characterized in that: The collecting device further includes a rotating pressing rod (33), a sliding rod (34), a sliding pressing plate (36), a rotating pressing plate (37) and a compacting plate (38), the rotating pressing rod (33) is fixedly installed at one end of the reciprocating wire rod (29) away from the motor (28), the sliding rod (34) is slidably installed on the inner wall of the storage frame (31), the suction box (35) is provided with a square groove at one side close to the sliding rod (34), the shape of the sliding rod (34) is matched with the shape of the square groove, the sliding pressing plate (36) is slidably installed on the inner wall of the suction box (35), the rotating pressing plate (37) is rotatably installed on the inner wall of the suction box (35), and the compacting plate (38) is slidably installed on the inner wall of the suction box (35).

7. A box-type assembled power transformer according to claim 6, characterized in that: A spring is arranged between the sliding rod (34) and the storage frame (31), a spring is arranged between the sliding pressing plate (36) and the suction box (35), one side of the sliding rod (34) and the sliding pressing plate (36) close to each other is provided as an inclined surface, a torsional spring is arranged between the rotating pressing plate (37) and the suction box (35), and a spring is arranged between the compacting plate (38) and the inner wall of the suction box (35).

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