A wind-cooled power distribution box transformer

Abstract

The present invention discloses a wind-cooled power generation box transformer, which relates to the technical field of electrical equipment and includes a transformer mechanism. An outer shell mechanism is installed on the top of the transformer mechanism. During the wind-cooling process, the intake and exhaust operate independently. After the driving mechanism provides driving force for the self-cleaning mechanism used for filtration inside, the positions of the four filter plates inside can be adjusted. As a result, the filter plate adhered with external air impurities will rotate to the position below the exhaust fan, while the filter plate adhered with internal air impurities will rotate to the position of the air supply port. Under the action of a special air flow path, after the filter plate adhered with a large amount of external air impurities rotates, under the action of the exhaust air flow, the impurities will be directly blown back to the outside, thereby greatly increasing the cleaning interval of the filter plate, solving the defect of the external placement of the power generation box transformer, and thus forming a greater advantage in terms of economy.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly to a wind-cooled power box transformer for a wind power generator. Background Art

[0002] With the continuous growth of the global demand for clean energy, wind power generation, as a renewable and pollution-free energy form, has developed rapidly. In a wind power generation system, a box transformer plays a crucial role. It steps up the electric energy generated by a wind turbine and transmits it to the power grid.

[0003] In the prior art, as disclosed in Chinese Patent No.: CN111613988A, there is a wind-cooled power box transformer for a wind power generator, which includes a box body, a fixing plate, a fixing rod, a transformer, a high-voltage cabinet, a low-voltage cabinet, and a wind-cooling component; the box body includes a bottom plate, a top plate, a first side plate, and a second side plate; the first side plate and the second side plate are both connected between the bottom plate and the top plate; the first side plate and the second side plate isolate the box body into a transformer chamber, a high-voltage chamber, and a low-voltage chamber; the high-voltage cabinet is arranged in the high-voltage chamber; the low-voltage cabinet is arranged in the low-voltage chamber; the transformer is arranged in the transformer chamber; compared with the traditional way of using a exhaust fan for wind cooling, the wind-cooled power box transformer for a wind power generator proposed by the present invention has a better heat dissipation and cooling effect by adding relevant structures for atomization evaporation cooling, so that the temperature of the air inhaled into the transformer box body is lower.

[0004] Although the relevant structure of the above patent cools down by atomization evaporation, the temperature of the air inhaled into the transformer box is lower, and it has a better heat dissipation and cooling effect. However, in actual use, wind power box transformers are mainly divided into those installed inside and outside the wind turbine tower. The built-in method can occupy less land, and the infrastructure cost is lower than that of the external installation. The operating environment is cleaner than the external method. However, the internal space of the tower greatly restricts the size and performance of the transformer. Moreover, the transformer body and high and low voltage switch cabinets need to be arranged in layers, which not only increases the installation cost and difficulty, but also the later maintenance difficulty increases exponentially compared with the external method. The external method is not restricted by space. The transformer body and high and low voltage switch cabinets can be arranged in a shell, the structure is simpler and the appearance is not restricted. It can greatly improve the transformer performance on the premise of effectively controlling the cost, and it is convenient for manufacturing, transportation, hoisting, on-site installation and future maintenance. And the cooling method adopts AN / AF, the cooling method is simple, efficient and low-cost. Although the external installation of the wind power box transformer in wind power generation can effectively control the costs in all aspects and has a higher convenience of use, the locations of wind power generation are very remote and far from each other. When the natural cooling / forced air cooling heat dissipation method of the external wind power box transformer is used in an outdoor environment with a poor environment, the cleaning cycle of the filter plate in the box will be shorter. In the case of remote locations, large land occupation due to the long distance between box transformers, manual cleaning and replacement of the filter plate will consume a lot of time and labor costs, increasing the overall cost of the external wind power box transformer. Economically, it is difficult to form a great advantage.

[0005] Therefore, we propose a wind power box transformer with air-cooled heat dissipation to solve the problems raised in the above background technology. Summary of the Invention

[0006] The purpose of the present invention is to provide a wind power box transformer with air-cooled heat dissipation to solve the problem that the external wind power box transformer with many advantages in the above background technology needs to consume a lot of time and labor costs due to the filter plate problem and it is difficult to form a great advantage economically.

[0007] To achieve the above object, the present invention provides the following technical solutions: A wind-cooled power box transformer, comprising a transformer mechanism, on the top of the transformer mechanism is installed a housing mechanism, inside the housing mechanism near the center position is provided a flow splitting component, outside the flow splitting component is provided a self-cleaning mechanism, on the top of the housing mechanism is provided a driving mechanism, inside the housing mechanism near the front side position is provided a dust cleaning mechanism. The flow splitting component includes a circular shell, on the outer surface of the circular shell near the left side are respectively opened a first air inlet and a second air inlet, on the outer surface of the circular shell near the outer side are respectively opened a first air extraction port and a second air extraction port. The self-cleaning mechanism includes an annular shell, inside the annular shell near the left side are opened two air supply channels, inside the annular shell near the right side are opened two air exchange channels, on the outer surface of the annular shell at the outer sides of the air supply channels and the air exchange channels are connected with filter plates respectively.

[0008] Preferably, the transformer mechanism includes a sealed housing, on the inner bottom of the sealed housing is installed a transformer body, on one inner wall of the sealed housing is installed an air exchange shell, on the other inner wall of the sealed housing is installed an air supply shell. On the opposite side outer surfaces of the air exchange shell and the air supply shell are respectively opened a plurality of exhaust grooves, on the opposite side outer surfaces of the air exchange shell and the air supply shell near the top position are respectively fixedly communicated with an air exchange pipe and an air supply pipe.

[0009] Preferably, the housing mechanism includes a bottom shell, the bottom shell is fixedly connected to the top of the sealed housing, at the positions of two front side corners near the bottom of the bottom shell are respectively opened an air exchange opening and an air supply opening. The top of the air exchange pipe and the position of the bottom shell bottom outside the air exchange opening are fixedly connected, the top of the air supply pipe and the position of the bottom shell bottom outside the air supply opening are fixedly connected.

[0010] Preferably, on the top of the bottom shell is fixedly installed a top cover, on the inner walls of the four sides of the bottom shell near the center are all fixedly connected with partition blocks. The annular shell is rotatably connected to the inner bottom of the bottom shell and on the outer surface are equidistantly fixedly connected with four extension blocks, the outer surfaces of the extension blocks and the outer surfaces of the partition blocks are slidably fitted, and an opening is opened on the front surface of the bottom shell.

[0011] Preferably, on the top of the top cover is fixedly connected with a motor bracket, at one corner position near the rear side on the top of the top cover is installed an air supply fan, at the other corner position near the rear side on the top of the top cover is installed an exhaust fan.

[0012] Preferably, the circular shell is fixedly connected to the center of the inner bottom of the bottom shell, and the outer surface of the circular shell is slidably fitted with the inner wall of the inner ring groove. The first air inlet and the second air inlet are communicated, the first air extraction port and the second air extraction port are communicated, the first air inlet and the second air inlet are respectively communicated with two air supply channels, and the first air extraction port and the second air extraction port are respectively communicated with two air exchange channels.

[0013] Preferably, the driving mechanism includes a stepping motor. The stepping motor is fixedly installed on the top of the motor frame, and the output end thereof rotates through the motor frame and the top of the top cover and extends below the top cover. The output end of the stepping motor is fixedly connected with a driving gear. An internal gear is fixedly connected to the top of the annular shell near the edge. The driving gear is meshed with the internal gear, and the number of teeth of the internal gear is greater than that of the driving gear.

[0014] Preferably, the dust cleaning mechanism includes a first roller, a second roller and a U-shaped shell. The first roller and the second roller are both rotatably connected to the position near the front side of the inner bottom of the bottom shell. The second roller is located outside the opening. A second transmission belt is drivingly connected between the outer surfaces of the first roller and the second roller. Multiple groups of nylon brushes are arranged on the outer surface of the second transmission belt.

[0015] Preferably, the U-shaped shell is fixedly connected to the position on the front surface of the bottom shell outside the opening. A brush plate is fixedly connected to the inner wall of one side of the U-shaped shell. The brush plate cooperates with the nylon brush. A large belt pulley is fixedly connected to the outer surface of the output end of the stepping motor above the top cover. A first transmission belt is sleeved on the outer surface of the large belt pulley. A small belt pulley is arranged at the position near the front side of the inner wall of the first transmission belt. A connecting shaft is fixedly connected to the center of the bottom of the small belt pulley. The bottom end of the connecting shaft rotates through the top of the top cover and is fixedly connected to the top end of the second roller.

[0016] Preferably, a ladder is fixedly installed on the outer surface of one side of the sealed housing. Top frames are fixedly connected to the positions near the four corners of the top of the sealed housing. A ceiling is fixedly connected between the tops of the four top frames. The ceiling is located above the bottom shell, and the top of the ceiling is designed to be reduced.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. When the present invention is in use, during the air-cooling heat dissipation process, the intake and exhaust operate independently. After providing driving force to the self-cleaning mechanism for internal filtration through the driving mechanism, the positions of the four internal filter plates can be adjusted. As a result, the filter plate adhered with external air impurities will rotate to the position below the exhaust fan, and the filter plate adhered with internal air impurities will rotate to the position of the air supply port. Under the action of a special air flow path, after the filter plate adhered with a large amount of external air impurities rotates, under the action of the exhaust air flow, the impurities will be directly blown back to the outside, thus greatly increasing the cleaning interval of the filter plate, solving the defect of the external placement of the wind power box transformer, and thus forming a greater advantage in terms of economy.

[0019] 2. When the present invention is in use, the overall structural design enables the air to enter from the left and exit from the right inside the sealed housing, thus forming a clear air flow and being able to quickly pass through the transformer body, thereby taking away heat, avoiding local heat accumulation, effectively improving the air-cooling heat dissipation effect. And when the external gas enters, the impurities in it will be effectively blocked by the filter plate, preventing dust from entering the sealed housing and adhering to the surface of the transformer body, causing heat to be difficult to discharge and resulting in failures, ensuring the stability of the transformer body during operation, and the overall use effect is good.

[0020] 3. When the present invention is in use, during the rotation of the filter plate adhered with internal air impurities, the large pulley following the driving end of the stepping motor will synchronously drive the small pulley to rotate at high speed through the first transmission belt. The small pulley will drive the first roller to rotate rapidly through the connecting shaft. At this time, the rapidly rotating first roller and the second roller will drive the second transmission belt to operate rapidly. During the operation, the nylon brush on the surface will clean the internal air impurities adhered to the filter plate. And during the rotation of the second transmission belt, the nylon brush and the brush plate are staggered up and down, and the impurities adhered to the surface will be scraped off by the brush plate and retained in the area of the U-shaped housing, thus ensuring that the air quality inside the sealed housing is not affected after the position of the filter plate adhered with internal air impurities is changed, ensuring that the transformer body can effectively exert its performance, with good practicability. And the special design of this box-type transformer makes the content of internal air impurities relatively low, and it only needs to remove the U-shaped housing twice a year to remove the internal air impurities, with high practicability.

[0021] 4. When the present invention is in use, by designing a top frame on the top of the sealed housing to support the ceiling, it plays a role in rain protection, which can effectively prevent damage to the air supply fan and the exhaust fan in rainy weather and improve the service life. And by designing a ladder outside the sealed housing, it is convenient for maintenance personnel to climb to the top of the sealed housing to check and maintain the air supply fan, exhaust fan and stepping motor exposed outside, with a simple and reasonable structure and reduced maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional view of a wind power box transformer with air-cooling heat dissipation according to the present invention;

[0023] Figure 2 Cross-sectional view of a wind-cooled transformer for a wind power box according to the present invention;

[0024] Figure 3 Schematic structural diagram of the transformer mechanism of a wind-cooled transformer for a wind power box according to the present invention;

[0025] Figure 4 Schematic structural diagram of the housing mechanism of a wind-cooled transformer for a wind power box according to the present invention;

[0026] Figure 5 Partial cross-sectional view of a wind-cooled transformer for a wind power box according to the present invention;

[0027] Figure 6 Schematic structural diagram of the shunt component of a wind-cooled transformer for a wind power box according to the present invention;

[0028] Figure 7 Schematic structural diagram of the self-cleaning mechanism of a wind-cooled transformer for a wind power box according to the present invention;

[0029] Figure 8 Schematic structural diagram of the driving mechanism of a wind-cooled transformer for a wind power box according to the present invention;

[0030] Figure 9 Schematic structural diagram of the dust cleaning mechanism of a wind-cooled transformer for a wind power box according to the present invention.

[0031] In the figure: 1. Transformer mechanism; 101. Sealed housing; 102. Transformer body; 103. Ventilation housing; 104. Air supply housing; 105. Ventilation pipe; 106. Air supply pipe; 107. Ladder; 108. Top frame; 109. Ceiling; 2. Housing mechanism; 201. Bottom shell; 202. Opening; 203. Partition block; 204. Top cover; 205. Motor frame; 206. Air supply fan; 207. Exhaust fan; 208. Ventilation opening; 209. Air supply opening; 3. Shunt component; 301. Circular housing; 302. First air inlet; 303. Second air inlet; 304. First air extraction port; 305. Second air extraction port; 4. Self-cleaning mechanism; 401. Ring-shaped housing; 402. Extension block; 403. Inner ring groove; 404. Ventilation channel; 405. Air supply channel; 406. Filter plate; 407. Internal gear; 5. Driving mechanism; 501. Stepper motor; 502. Large belt pulley; 503. Driving gear; 504. First transmission belt; 505. Small belt pulley; 506. Connecting shaft; 6. Dust cleaning mechanism; 601. First roller; 602. Second roller; 603. Second transmission belt; 604. Nylon brush; 605. U-shaped housing; 606. Brush plate. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1-9As shown in the figure, the present invention provides a technical solution: an air-cooled wind power box transformer, which includes a transformer mechanism 1. A housing mechanism 2 is installed on the top of the transformer mechanism 1. A flow splitting component 3 is arranged near the center inside the housing mechanism 2. A self-cleaning mechanism 4 is arranged outside the flow splitting component 3. A driving mechanism 5 is arranged on the top of the housing mechanism 2. A dust cleaning mechanism 6 is arranged near the front side inside the housing mechanism 2. The flow splitting component 3 includes a circular shell 301. A first air inlet 302 and a second air inlet 303 are respectively opened on the outer surface of the circular shell 301 near the left side. A first air extraction port 304 and a second air extraction port 305 are respectively opened on the outer surface of the circular shell 301 near the outer side. The self-cleaning mechanism 4 includes an annular shell 401. Two air supply channels 405 are opened near the left side inside the annular shell 401. Two air exchange channels 404 are opened near the right side inside the annular shell 401. Filter plates 406 are connected to the outer surface of the annular shell 401 at positions outside the air supply channels 405 and the air exchange channels 404. The transformer mechanism 1 includes a sealed housing 101. A transformer body 102 is installed on the inner bottom of the sealed housing 101. An air exchange shell 103 is installed on the inner wall of one side of the sealed housing 101. An air supply shell 104 is installed on the inner wall of the other side of the sealed housing 101. A plurality of exhaust grooves are opened on the opposite outer surfaces of the air exchange shell 103 and the air supply shell 104. An air exchange pipe 105 and an air supply pipe 106 are respectively fixedly communicated with the opposite outer surfaces of the air exchange shell 103 and the air supply shell 104 near the top. The housing mechanism 2 includes a bottom shell 201. The bottom shell 201 is fixedly connected to the top of the sealed housing 101. An air exchange port 208 and an air supply port 209 are respectively opened at two corners near the front side of the bottom of the bottom shell 201. The top of the air exchange pipe 105 is fixedly connected to the position outside the air exchange port 208 at the bottom of the bottom shell 201. The top of the air supply pipe 106 is fixedly connected to the position outside the air supply port 209 at the bottom of the bottom shell 201. A top cover 204 is fixedly installed on the top of the bottom shell 201. Partition blocks 203 are fixedly connected to the inner walls of the four sides of the bottom shell 201 near the center. The annular shell 401 is rotatably connected to the inner bottom of the bottom shell 201 and four extension blocks 402 are fixedly connected to the outer surface at equal intervals. The outer surface of the extension blocks 402 is slidably attached to the outer surface of the partition blocks 203. An opening 202 is opened on the front surface of the bottom shell 201. A motor bracket 205 is fixedly connected to the top of the top cover 204. An air supply fan 206 is installed at one corner near the rear side of the top of the top cover 204. An exhaust fan 207 is installed at the other corner near the rear side of the top of the top cover 204. The circular shell 301 is fixedly connected to the center of the inner bottom of the bottom shell 201, and the outer surface of the circular shell 301 is slidably attached to the inner wall of the inner ring groove 403. The first air inlet 302 and the second air inlet 303 are in a communicating setting. The first air extraction port 304 and the second air extraction port 305 are in a communicating setting. The first air inlet 302 and the second air inlet 303 are respectively connected to the two air supply channels 405.The first air extraction port 304 and the second air extraction port 305 are respectively communicated with two air exchange channels 404. The driving mechanism 5 includes a stepping motor 501. The stepping motor 501 is fixedly installed on the top of the motor frame 205, and the output end thereof rotatably penetrates through the top of the motor frame 205 and the top cover 204 and extends below the top cover 204. The output end of the stepping motor 501 is fixedly connected with a driving gear 503. An internal gear 407 is fixedly connected to the top of the annular shell 401 near the edge. The driving gear 503 is meshed with the internal gear 407, and the number of teeth of the internal gear 407 is greater than that of the driving gear 503.,

[0034] In this embodiment, when this wind power box transformer is used in cooperation with a wind turbine generator, the building high platform can install this device outside the tower barrel for use. When this device needs to dissipate heat, start the air supply fan 206 and the exhaust fan 207. After the air supply fan 206 is started, it will extract the ambient normal temperature air and convey it downward. Since the interior of the bottom shell 201 is divided into five regions by the expansion block 402, the partition block 203, and the annular shell 401, corresponding to the air supply fan 206, the exhaust fan 207, the air supply port 209, the ventilation port 208, and the annular shell 401 respectively. At this time, the normal temperature air will enter below the air supply fan 206, and then pass through the filter plate 406 and the air supply channel 405 at the corresponding positions in sequence, and then enter from the first air inlet 302 of the circular shell 301, discharge from the second air inlet 303, and then pass through the air supply channel 405 and the filter plate 406 at the corresponding positions again, and then be discharged into the air supply shell 104 from the air supply port 209 and the air supply pipe 106. Finally, the normal temperature air is sent into the left side position inside the sealed housing 101 through the exhaust slots on the surface of the air supply shell 104. After the exhaust fan 207 is started, the exhaust slots on the surface of the ventilation shell 103 on the right side inside the sealed housing 101 will generate suction and draw in the high-temperature gas generated during the operation of the transformer body 102. Then, the high-temperature gas will enter the corresponding area inside the bottom shell 201 through the ventilation pipe 105 and the ventilation port 208. Subsequently, the high-temperature gas will pass through the filter plate 406 and the ventilation channel 404 at the corresponding positions, and then enter from the first air extraction port 304 of the circular shell 301, discharge from the second air extraction port 305, and then enter the corresponding position of the bottom shell 201 through the ventilation channel 404 and the filter plate 406 at the corresponding positions, and then be discharged to the outside from the position of the exhaust fan 207. This design enables the air to enter from the left and exit from the right inside the sealed housing 101, thus forming a clear air flow and being able to quickly pass through the transformer body 102, thereby taking away the heat, avoiding local heat accumulation, effectively improving the air-cooled heat dissipation effect. And when the outside gas enters, the impurities in it will be effectively blocked by the filter plate 406, preventing dust from entering the sealed housing 101 and adhering to the surface of the transformer body 102, causing heat to be difficult to discharge and resulting in failures, ensuring the stability of the transformer body 102 during operation. The overall use effect is good. During the air-cooled heat dissipation process of the transformer body 102 inside the sealed housing 101, due to the special air flow path design, the impurities in the outside air will adhere to the filter plate 406 below the air supply fan 206, and a small amount of impurities in the internal gas will adhere to the filter plate 406 corresponding to the ventilation port 208. According to the timing module in the internal controller, start the stepping motor 501 at regular intervals. The stepping motor 501 will drive the driving gear 503 to rotate. When the driving gear 503 rotates, it will drive the annular shell 401 to rotate 90° in cooperation with the internal gear 407. As a result, the filter plate 406 with the impurities of the outside air adhered to it will rotate to the position below the exhaust fan 207, and the filter plate 406 with the impurities of the internal air adhered to it will rotate to the position of the air supply port 209. Under the action of the special air flow path,After the filter plate 406 adhered with a large amount of external air impurities rotates, under the action of the exhaust air flow, the impurities will be directly blown back to the outside world.

[0035] Embodiment 2: As Figures 1-8 shown, the dust cleaning mechanism 6 includes a first rotating roller 601, a second rotating roller 602 and a U-shaped shell 605. The first rotating roller 601 and the second rotating roller 602 are both rotatably connected to the inner bottom of the bottom shell 201 near the front side. The second rotating roller 602 is located outside the opening 202. A second transmission belt 603 is drivingly connected between the outer surfaces of the first rotating roller 601 and the second rotating roller 602. A plurality of nylon brushes 604 are arranged on the outer surface of the second transmission belt 603. The U-shaped shell 605 is fixedly connected to the front surface of the bottom shell 201 at a position outside the opening 202. A brush plate 606 is fixedly connected to the inner wall of one side of the U-shaped shell 605. The brush plate 606 cooperates with the nylon brush 604. A large pulley 502 is fixedly connected to the outer surface of the output end of the stepping motor 501 above the top cover 204. A first transmission belt 504 is sleeved on the outer surface of the large pulley 502. A small pulley 505 is arranged on the inner surface of the first transmission belt 504 near the front side. A connecting shaft 506 is fixedly connected to the center of the bottom of the small pulley 505. The bottom end of the connecting shaft 506 rotatably penetrates through the top of the top cover 204 and is fixedly connected to the top end of the second rotating roller 602.

[0036] In this embodiment, during use, when the filter plate 406 adhered with internal air impurities rotates, the large pulley 502 following the rotation of the driving end of the stepping motor 501 will synchronously drive the small pulley 505 to rotate at a high speed through the first transmission belt 504. And since the diameter of the large pulley 502 is larger than that of the small pulley 505, and the number of teeth of the driving gear 503 is less than the number of teeth of the internal gear 407, when the annular shell 401 drives the filter plate 406 to rotate slowly, the small pulley 505 will drive the first rotating roller 601 to rotate rapidly through the connecting shaft 506. At this time, the rapidly rotating first rotating roller 601 and the second rotating roller 602 will drive the second transmission belt 603 to rotate rapidly. During the rotation process, the nylon brush 604 on the surface will clean the internal air impurities adhered to the filter plate 406. And during the rotation of the second transmission belt 603, the nylon brush 604 and the brush plate 606 are staggered up and down, and the impurities adhered to the surface will be scraped off by the brush plate 606 and stay in the area of the U-shaped shell 605, thereby ensuring that the quality of the air inside the sealed housing 101 is not affected after the position of the filter plate 406 adhered with internal air impurities is changed, ensuring that the transformer body 102 can effectively exert its performance, with good practicability. And the special design of this box-type transformer makes the content of internal air impurities relatively low. It only needs to remove the U-shaped shell 605 twice a year to remove the internal air impurities, with high practicability.

[0037] Embodiment 3: As Figures 1-4 and Figure 6As shown, a ladder 107 is fixedly installed on the outer surface of one side of the sealed housing 101. Top frames 108 are fixedly connected to the positions near the four corners at the top of the sealed housing 101. A ceiling 109 is fixedly connected between the tops of the four top frames 108. The ceiling 109 is located above the bottom case 201 and the top of the ceiling 109 is designed to be reduced.

[0038] In this embodiment, during use, by designing the top frame 108 at the top of the sealed housing 101 to support the ceiling 109, it plays a role in shielding rain, which can effectively prevent damage to the air supply fan 206 and the exhaust fan 207 in rainy weather and improve the service life. And by designing the ladder 107 outside the sealed housing 101, it is convenient for maintenance personnel to climb to the top of the sealed housing 101 to inspect and maintain the air supply fan 206, the exhaust fan 207 and the stepping motor 501 exposed outside. The structure is simple and reasonable, reducing the maintenance difficulty.

[0039] The effects and working principle achieved by the entire mechanism are as follows: When this wind power box transformer is used in conjunction with a wind turbine generator, the building high platform can install this device outside the tower barrel for use. When this device needs to dissipate heat, start the air supply fan 206 and the exhaust fan 207. After the air supply fan 206 starts, it will draw out the ambient normal-temperature air and convey it downward. Since the interior of the bottom shell 201 is divided into five regions by the expansion block 402, the partition block 203, and the annular shell 401, corresponding to the air supply fan 206, the exhaust fan 207, the air supply port 209, the air exchange port 208, and the annular shell 401 respectively. At this time, the normal-temperature air will enter below the air supply fan 206, and then successively pass through the filter plate 406 and the air supply channel 405 at the corresponding positions, and then enter from the first air inlet 302 of the circular shell 301 and discharge from the second air inlet 303, and then pass through the air supply channel 405 and the filter plate 406 at the corresponding positions again and be discharged into the air supply shell 104 from the air supply port 209 and the air supply pipe 106. Finally, the normal-temperature air is sent into the left side position inside the sealed housing 101 through the exhaust groove on the surface of the air supply shell 104. After the exhaust fan 207 starts, the exhaust groove on the surface of the air exchange housing 103 on the right side inside the sealed housing 101 will generate suction and draw in the high-temperature gas generated during the operation of the transformer body 102. Then, the high-temperature gas will enter the corresponding area inside the bottom shell 201 through the air exchange pipe 105 and the air exchange port 208. Subsequently, the high-temperature gas will pass through the filter plate 406 and the air exchange channel 404 at the corresponding positions, and then enter from the first air extraction port 304 of the circular shell 301 and discharge from the second air extraction port 305, and then enter the corresponding position of the bottom shell 201 through the air exchange channel 404 and the filter plate 406 at the corresponding positions and be discharged to the outside from the position of the exhaust fan 207. This design enables the air to enter from the left and exit from the right inside the sealed housing 101, thus forming a clear air flow and being able to quickly pass through the transformer body 102, thereby taking away heat, avoiding local heat accumulation, effectively improving the air-cooled heat dissipation effect. And when the outside gas enters, the impurities in it will be effectively blocked by the filter plate 406, preventing dust from entering the sealed housing 101 and adhering to the surface of the transformer body 102, resulting in difficult heat dissipation and causing failures, ensuring the stability of the transformer body 102 during operation. The overall use effect is good. During the air-cooled heat dissipation process of the transformer body 102 inside the sealed housing 101, due to the special air flow path design, the impurities in the outside air will adhere to the filter plate 406 below the air supply fan 206, and a small amount of impurities in the internal gas will adhere to the filter plate 406 corresponding to the air exchange port 208. According to the timing module in the internal controller, start the stepping motor 501 at regular intervals. The stepping motor 501 will drive the driving gear 503 to rotate. When the driving gear 503 rotates, it will drive the annular shell 401 to rotate 90° in cooperation with the internal gear 407. As a result, the filter plate 406 adhered with the impurities in the outside air will rotate to the position below the exhaust fan 207, and the filter plate 406 adhered with the impurities in the internal air will rotate to the position of the air supply port 209.Under the action of a special air flow path, after the filter plate 406 adhered with a large amount of external air impurities rotates, under the action of the exhaust air flow, the impurities will be directly blown back to the outside world.

[0040] During the rotation of the filter plate 406 adhered with internal air impurities, the large pulley 502 following the driving end of the stepping motor 501 will synchronously drive the small pulley 505 to rotate at high speed through the first transmission belt 504. And because the diameter of the large pulley 502 is larger than that of the small pulley 505, and the number of teeth of the driving gear 503 is less than the number of teeth of the internal gear 407, when the annular shell 401 drives the filter plate 406 to rotate slowly, the small pulley 505 will drive the first roller 601 to rotate rapidly through the connecting shaft 506. At this time, the rapidly rotating first roller 601 and the second roller 602 will drive the second transmission belt 603 to rotate rapidly. During the rotation process, the surface nylon brush 604 will clean the internal air impurities adhered to the filter plate 406. And during the rotation of the second transmission belt 603, the nylon brush 604 and the brush plate 606 are staggered up and down, and the impurities adhered to the surface will be scraped off by the brush plate 606 and stay in the area of the U-shaped shell 605, thus ensuring that the position change of the filter plate 406 adhered with internal air impurities does not affect the air quality inside the sealed housing 101, ensuring that the transformer body 102 can effectively exert its performance, with good practicability. And the special design of this box-type transformer makes the content of internal air impurities relatively low, and only needs to remove the U-shaped shell 605 twice a year to remove the internal air impurities, with high practicability.

[0041] Moreover, by designing a top frame 108 on the top of the sealed housing 101 to support the ceiling 109, it plays a role in rain shielding, which can effectively avoid damage to the air supply fan 206 and the exhaust fan 207 in rainy weather and improve the service life. And by designing a ladder 107 outside the sealed housing 101, it is convenient for maintenance personnel to climb to the top of the sealed housing 101 to check and maintain the air supply fan 206, the exhaust fan 207 and the stepping motor 501 exposed outside. The structure is simple and reasonable, reducing the maintenance difficulty.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wind turbine box transformer with air cooling and heat dissipation, comprising a transformer mechanism (1), characterized in that: A shell mechanism (2) is installed on the top of the transformer mechanism (1); a shunt assembly (3) is arranged near the center of the shell mechanism (2); a self-cleaning mechanism (4) is arranged on the outside of the shunt assembly (3); a driving mechanism (5) is arranged on the top of the shell mechanism (2); and a dust cleaning mechanism (6) is arranged near the front of the shell mechanism (2); The flow splitter assembly (3) comprises a circular shell (301), the outer surface of the circular shell (301) being provided with a first air inlet (302) and a second air inlet (303) at positions close to the left side, and the outer surface of the circular shell (301) being provided with a first air extraction port (304) and a second air extraction port (305) at positions close to the outside. The self-cleaning mechanism (4) comprises an annular shell (401), two air supply channels (405) are provided at positions near the left side of the annular shell (401), two ventilation channels (404) are provided at positions near the right side of the annular shell (401), and filter plates (406) are connected to positions on the outer side of the air supply channels (405) and the ventilation channels (404) on the outer surface of the annular shell (401); The driving mechanism (5) comprises a stepper motor (501), the stepper motor (501) being fixedly mounted on the top of the motor frame (205), and the output end of the stepper motor (501) rotatingly passes through the motor frame (205) and the top of the top cover (204) and extends to the bottom of the top cover (204), the output end of the stepper motor (501) being fixedly connected to a driving gear (503), the top of the annular shell (401) being fixedly connected to an internal gear (407) near the edge, the driving gear (503) and the internal gear (407) being meshedly connected, and the number of teeth of the internal gear (407) being greater than the number of teeth of the driving gear (503); The dust cleaning mechanism (6) comprises a first rotating roller (601), a second rotating roller (602) and a U-shaped shell (605); the first rotating roller (601) and the second rotating roller (602) are both rotatably connected to the inner bottom of the bottom shell (201) near the front side; the second rotating roller (602) is located outside the opening (202); a second transmission belt (603) is transmission-connected between the outer surfaces of the first rotating roller (601) and the second rotating roller (602); and a plurality of groups of nylon brushes (604) are arranged on the outer surface of the second transmission belt (603); The circular shell (301) is fixedly connected to the center of the inner bottom of the bottom shell (201), and the outer surface of the circular shell (301) and the inner surface wall of the inner ring groove (403) are slidably fitted, the first air inlet (302) and the second air inlet (303) are connected, the first air extraction port (304) and the second air extraction port (305) are connected, the first air inlet (302) and the second air inlet (303) are respectively connected to the two air supply channels (405), and the first air extraction port (304) and the second air extraction port (305) are respectively connected to the two ventilation channels (404).

2. The wind turbine box transformer with air cooling and heat dissipation according to claim 1 is characterized in that: The transformer mechanism (1) comprises a sealed housing (101), a transformer body (102) is mounted on the inner bottom of the sealed housing (101), a ventilation shell (103) is mounted on the inner surface wall of one side of the sealed housing (101), and an air supply shell (104) is mounted on the inner surface wall of the other side of the sealed housing (101), a plurality of exhaust grooves are provided on the outer surfaces of the opposite sides of the ventilation shell (103) and the air supply shell (104), and a ventilation pipe (105) and an air supply pipe (106) are fixedly connected to the outer surfaces of the opposite sides of the ventilation shell (103) and the air supply shell (104) at positions close to the top.

3. The wind power box transformer with air cooling and heat dissipation according to claim 2 is characterized in that: The housing mechanism (2) comprises a bottom housing (201), the bottom housing (201) being fixedly connected to the top of the sealed housing (101), a ventilation port (208) and an air supply port (209) being respectively provided at the bottom of the bottom housing (201) near two front corners, the top of the ventilation pipe (105) being fixedly connected to the bottom of the bottom housing (201) at a position outside the ventilation port (208), and the top of the air supply pipe (106) being fixedly connected to the bottom of the bottom housing (201) at a position outside the air supply port (209).

4. The wind power box transformer with air cooling and heat dissipation according to claim 3 is characterized in that: A top cover (204) is fixedly mounted on the top of the bottom shell (201); partition blocks (203) are fixedly connected to the inner surface walls of the four sides of the bottom shell (201) near the center; the annular shell (401) is rotatably connected to the inner bottom of the bottom shell (201) and has four expansion blocks (402) fixedly connected to the outer surface at equal intervals; the outer surface of the expansion block (402) is slidably fitted with the outer surface of the partition block (203); and an opening (202) is provided on the front surface of the bottom shell (201).

5. The wind power box transformer with air cooling and heat dissipation according to claim 4 is characterized in that: The top of the top cover (204) is fixedly connected to a motor frame (205), an air supply fan (206) is installed at a position of the top of the top cover (204) near one of the rear corners, and an exhaust fan (207) is installed at a position of the top of the top cover (204) near another rear corner.

6. The wind power box transformer with air cooling and heat dissipation according to claim 5 is characterized in that: The U-shaped shell (605) is fixedly connected to the front surface of the bottom shell (201) at a position outside the opening (202); a brush plate (606) is fixedly connected to the inner surface wall of one side of the U-shaped shell (605); the brush plate (606) cooperates with the nylon brush (604); a large pulley (502) is fixedly connected to the outer surface of the output end of the stepper motor (501) at a position above the top cover (204); a first transmission belt (504) is sleeved on the outer surface of the large pulley (502); a small pulley (505) is provided on the inner surface wall of the first transmission belt (504) near the front side; a connecting shaft (506) is fixedly connected to the center of the bottom of the small pulley (505); the bottom end of the connecting shaft (506) rotates through the top of the top cover (204) and is fixedly connected to the top of the second roller (602).

7. The wind power box transformer with air cooling and heat dissipation according to claim 6 is characterized in that: A ladder (107) is fixedly mounted on the outer surface of one side of the sealed housing (101); top frames (108) are fixedly connected to the top of the sealed housing (101) near four corners; a ceiling (109) is fixedly connected between the tops of the four top frames (108); the ceiling (109) is located above the bottom housing (201) and the top of the ceiling (109) is of a reduced design.

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