Low-loss 220KV transformer

Abstract

The invention discloses a low-loss 220KV transformer, and belongs to the technical field of low-loss transformers. The top of a coil body is electrically connected with a connecting frame; a separation shell is arranged in the device body and divides the interior of the device body into two areas, an air outlet net is arranged on the outer side of the separation shell, an air inlet mechanism and an air outlet mechanism are arranged in the separation shell, the air inlet mechanism comprises turbine blades, an air inlet valve is arranged at the bottoms of the turbine blades, and the air outlet mechanism comprises a device shell. And two sets of rotating shafts are arranged in the device shell, fifth bevel gears are arranged on the outer sides of the rotating shafts, two sets of sixth bevel gears are engaged with the tops of the fifth bevel gears, and the sixth bevel gears penetrate through the device shell to be connected with air outlet fan blades. By arranging the air inlet mechanism and the air outlet mechanism in the partition shell, wind power can be blown out from the left side and the right side of the partition shell to cool the coil body and other equipment in the coil body, so that heat can be better dissipated when the transformer runs, and the effect of reducing loss is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-loss transformers, and specifically to a 220-kilovolt low-loss transformer. Background Technique

[0002] A low-loss transformer is a type of transformer that significantly reduces energy loss during operation compared to traditional transformers. Low loss is achieved through improved design, selection of high-quality materials, optimization of manufacturing processes, or reasonable operation and maintenance. However, existing low-loss transformers have some deficiencies, such as: A low-loss high-impedance power transformer with application number CN202411341579.8 can ensure separate heat dissipation for the main body of the power transformer and the reactor, and also facilitate the maintenance of the main body of the power transformer and the reactor. However, during actual use, it is difficult to dissipate heat from the iron core and other equipment inside the transformer, which may cause the temperature of the iron core and other equipment inside the equipment to not dissipate, and may lead to a situation where the loss of the transformer is difficult to reduce due to internal heat problems.

[0003] Therefore, we propose a 220-kilovolt low-loss transformer to solve the problems raised above. Summary of the Invention

[0004] The purpose of the present invention is to provide a 220-kilovolt low-loss transformer to solve the problem that most low-loss transformers on the current market are difficult to dissipate heat from the iron core and other equipment inside the transformer, which may cause the temperature of the iron core and other equipment inside the equipment to not dissipate, and may lead to a situation where the loss of the transformer is difficult to reduce due to internal heat problems as proposed in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A 220-kilovolt low-loss transformer, including a device main body and a coil body arranged inside the device main body. The top of the coil body is electrically connected to a connecting frame, and a base is provided at the bottom of the device main body; A partition shell is arranged inside the device main body to divide the inside of the device main body into two regions. An air outlet net is provided on the outside of the partition shell, and an air intake mechanism and an air outlet mechanism are arranged inside the partition shell. The air intake mechanism includes a turbine fan blade, and an air intake valve is provided at the bottom of the turbine fan blade. The air outlet mechanism includes a device shell. Two rotating shafts are arranged inside the device shell, and a fifth bevel gear is arranged on the outside of the rotating shaft. Two sixth bevel gears are meshed at the top of the fifth bevel gear, and the sixth bevel gears pass through the device shell to connect to an air outlet fan blade, and the air outlet fan blade is located inside the air outlet net. The partition shell can drive the air intake mechanism and the air outlet mechanism to operate synchronously.

[0006] By arranging a partition shell inside the device body to divide the internal area into two groups, excessive iron cores can be avoided from piling up, heat increase can be prevented, and by arranging an air intake mechanism and an air outlet mechanism inside the partition shell, wind can be blown out from both the left and right sides of the partition shell to cool the coil body and other internal devices, so that when the transformer is operating, heat can be dissipated better, achieving the effect of reducing losses.

[0007] As a preferred technical solution of the present invention, a driving mechanism is arranged inside the partition shell, and the driving mechanism includes a driving motor, and a driving shaft is arranged at the front end of the driving motor. A first bevel gear is arranged outside the driving shaft, and a second bevel gear is engaged at the bottom of the first bevel gear, and the bottom of the second bevel gear is fixedly connected to a turbine fan blade; A third bevel gear is arranged outside the driving shaft, and a fourth bevel gear is engaged at the bottom of the third bevel gear, and the bottom of the fourth bevel gear is fixedly connected to a rotating shaft.

[0008] Adopting the above technical solution can make the driving mechanism more stable when driving the air outlet mechanism and the air intake mechanism to operate synchronously, thereby increasing the stability of the device during operation.

[0009] As a preferred technical solution of the present invention, the bottom of the turbine fan blade is rotatably connected to an air intake valve, a filter block is arranged outside the air intake valve, and the air intake valve is fixedly connected to a base.

[0010] Adopting the above technical solution can enable the air intake valve to filter the gas through the filter block when transmitting gas into the partition shell, thereby avoiding excessive dust from entering the device body and increasing the protection of the device during heat dissipation.

[0011] As a preferred technical solution of the present invention, the top of the air intake valve is connected to the partition shell through a pipeline, and a first sprocket is arranged at the bottom of each of the two second bevel gears, and a chain is engaged outside the first sprocket. A second sprocket is engaged outside the chain, and the bottom of the second sprocket is connected to a reciprocating threaded shaft, and a threaded sleeve is arranged outside the reciprocating threaded shaft. A cleaning brush is connected outside the threaded sleeve, and the surface of the cleaning brush is attached to the air outlet net, and the surface of the cleaning brush has adhesiveness.

[0012] Adopting the above technical solution can enable the air outlet net to clean and adsorb the dust on its surface through the cleaning brush when discharging air, so that when cleaning the dust inside the device, it can be more convenient.

[0013] As a preferred technical solution of the present invention, a sliding rod is slidably connected to the front end of the cleaning brush, and protective shells are arranged outside both the reciprocating threaded shaft and the sliding rod. An adsorption groove is arranged at the bottom of the reciprocating threaded shaft, an adhesive layer is arranged inside the adsorption groove, and the surface of the cleaning brush can be attached to the adhesive layer arranged inside the adsorption groove, and the adhesiveness of the adhesive layer is greater than the adhesiveness of the cleaning brush.

[0014] Adopting the above technical solution can enable the cleaning brush to adsorb the dust on its surface through the adsorption groove during the process of moving up and down back and forth, thereby preventing the surface of the cleaning brush from being covered with dust in a short time and increasing the efficiency of the equipment when cleaning dust.

[0015] As a preferred technical solution of the present invention, the adsorption groove is fixedly connected to the inside of the device main body, and a fixing mechanism for fixing the coil body is provided inside the device main body. The fixing mechanism includes two groups of fixing shells. A guide vane is provided in the middle of the fixing shell, and the two groups of fixing shells are connected by a connecting damper. A fixing seat is provided at the bottom of the fixing shell. The fixing shell transmits the wind force to the inside of the coil body through the guide vane for heat dissipation.

[0016] Adopting the above technical solution can make it more convenient to fix the coil body inside the device main body. And through the setting of the guide vane, the guide vane can divert the wind force brought by the air outlet net to the inside of the coil body, thereby avoiding the problem of heat accumulation inside the coil body and increasing the heat dissipation efficiency of the equipment.

[0017] As a preferred technical solution of the present invention, the fixing seat is fixedly connected to the inside of the device main body by bolts, and a ventilation mechanism is provided on each of the left and right sides of the device main body. The ventilation mechanism includes a rain shelter, and a rain baffle is provided inside the rain shelter.

[0018] Adopting the above technical solution can enable the rain shelter to protect the openings on the left and right sides of the device main body, thereby increasing the protection and rainproof performance of the equipment.

[0019] As a preferred technical solution of the present invention, a connecting shaft is provided on the outside of the rain baffle, and the outside of the rain baffle is rotatably connected to the rain shelter through the connecting shaft. A fitting pad is provided at the bottom of the rain baffle. The fitting pad is a kind of sealing pad. When the rain baffle freely falls, the fitting surface of the fitting pad will overlap and seal with the outside of the bottom rain baffle.

[0020] Adopting the above technical solution can enable the air flow inside the device main body to be too strong, and the air flow can blow up the rain baffle, so that the rain baffle can rotate around the connecting shaft as the center to open a gap for heat dissipation. When there is no strong air flow inside the device main body, the rain baffles will overlap each other, so that the fitting pad at the bottom of the rain baffle overlaps with the surface of the bottom rain baffle to form a seal, increasing the sealing and air outlet performance of the equipment.

[0021] As a preferred technical solution of the present invention, the rain shelter is fixedly connected to the outside of the device body, and a set of heat dissipation fins are provided on each of the front and rear sides of the device body. The heat dissipation fins are composed of heat-conducting materials. When the shells at both ends of the front end of the device body generate heat, the heat dissipation fins will absorb the heat and transfer it to the outside for heat dissipation. A temperature sensor is provided inside the device body, and the temperature sensor transmits information through a remote device.

[0022] Adopting the above technical solution can enable the air flow inside the device to transfer heat to the heat dissipation fins through the device body when flowing, so that the heat dissipation fins absorb and release the heat for heat dissipation, increasing the heat dissipation efficiency of the device.

[0023] Compared with the prior art, the beneficial effects of the present invention are: by arranging a partition shell inside the device body to divide the internal area into two groups, it can avoid excessive accumulation of iron cores, prevent heat increase, and by arranging an air intake mechanism and an air outlet mechanism inside the partition shell, it can make the wind blow out from both sides of the partition shell to cool the coil body and other internal devices, so that when the transformer is running, the heat can be better dissipated to achieve the effect of reducing losses; Furthermore, through the arrangement of the reciprocating threaded shaft and the cleaning brush, when the air outlet net discharges air, the cleaning brush can clean and adsorb the dust on its surface, making it more convenient to clean the dust inside the device. Even further, through the arrangement of the rain shield and the rain shelter, when the air flow inside the device body is too strong, the air flow can blow up the rain shield, so that the rain shield can rotate around the connecting shaft as the center to open a gap for heat dissipation. When there is no strong air flow inside the device body, the rain shields will overlap each other, so that the fitting pad at the bottom of the rain shield overlaps with the surface of the bottom rain shield to form a seal, increasing the airtightness and air exhaust performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front elevation structural schematic diagram of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the front cross-section of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the side cross-section of the present invention; Figure 4 It is a three-dimensional side structural schematic diagram of the partition shell of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the partition shell of the present invention; Figure 6 It is a cross-sectional elevation structural schematic diagram of the partition shell of the present invention; Figure 7Schematic three-dimensional structure diagram of the turbine blade of the present invention; Figure 8 Schematic three-dimensional structure diagram of the air outlet blade of the present invention; Figure 9 For the present invention Figure 8 Enlarged structure diagram at location A of Figure 10 Schematic three-dimensional structure diagram of the cleaning mechanism of the present invention; Figure 11 For the present invention Figure 10 Enlarged structure diagram at location B of Figure 12 Schematic three-dimensional structure diagram of the fixed shell of the present invention; Figure 13 Schematic three-dimensional structure diagram of the rain shield of the present invention; Figure 14 Schematic three-dimensional structure diagram of the enlarged parts of the rain shield of the present invention.

[0025] In the figure: 1, device main body; 2, connecting frame; 3, base; 4, coil body; 5, partition shell; 6, drive motor; 7, drive shaft; 8, first bevel gear; 9, second bevel gear; 10, turbine blade; 11, intake valve; 12, device shell; 13, third bevel gear; 14, fourth bevel gear; 15, rotating shaft; 16, fifth bevel gear; 17, sixth bevel gear; 18, air outlet blade; 19, first sprocket; 20, chain; 21, second sprocket; 22, reciprocating threaded shaft; 23, threaded sleeve; 24, cleaning brush; 25, air outlet net; 26, adsorption groove; 27, fixed shell; 28, guide vane; 29, connection damping; 30, rain shelter; 31, rain shield; 32, connecting shaft; 33, fitting pad; 34, heat dissipation fin; 35, sliding rod; 36, fixed seat; 37, temperature sensor. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 the embodiments.

[0027] Please refer to Figures 1-14 , the present invention provides a technical solution: a 220 kV transformer with low loss, including a device main body 1 and a coil body 4 arranged inside the device main body 1. The top of the coil body 4 is electrically connected to a connecting frame 2, and a base 3 is provided at the bottom of the device main body 1; Inside the device main body 1, there is a partition shell 5 that divides the interior of the device main body 1 into two regions. An air outlet net 25 is provided outside the partition shell 5. Inside the partition shell 5, there is an air intake mechanism and an air outlet mechanism. The air intake mechanism includes a turbine fan blade 10, and an air intake valve 11 is provided at the bottom of the turbine fan blade 10. The air outlet mechanism includes a device shell 12. Inside the device shell 12, there are two groups of rotating shafts 15. A fifth bevel gear 16 is provided outside the rotating shaft 15. Two groups of sixth bevel gears 17 are engaged at the top of the fifth bevel gear 16. The sixth bevel gear 17 passes through the device shell 12 and is connected to an air outlet fan blade 18. The air outlet fan blade 18 is located inside the air outlet net 25. The partition shell 5 can drive the air intake mechanism and the air outlet mechanism to operate synchronously; Install the partition shell 5 inside the device main body 1 to form two regions. Then install the coil body 4 and other transformer parts in the two regions inside the device main body 1, so that the device main body 1 forms a complete transformer. When the circuit is connected to this device, it can be connected through the bracket provided at the top of the connecting frame 2. And when this device is dissipating heat, the air intake mechanism and the air outlet mechanism inside the partition shell 5 can be started to operate. The turbine fan blade 10 transmits gas to the inside of the partition shell 5 through the air intake valve 11. Then the rotating shaft 15 drives the fifth bevel gear 16 to rotate, and the fifth bevel gear 16 drives two groups of sixth bevel gears 17 to rotate. Thus, the sixth bevel gear 17 drives the air outlet fan blade 18 to rotate, so that the air flow inside the partition shell 5 is blown towards the air outlet net 25 under the guidance of the air outlet fan blade 18, so that the air flow is released from the left and right sides of the partition shell 5 to dissipate heat from the two regions inside the device main body 1; Inside the partition shell 5, there is a driving mechanism. The driving mechanism includes a driving motor 6. A driving shaft 7 is provided at the front end of the driving motor 6. A first bevel gear 8 is provided outside the driving shaft 7. A second bevel gear 9 is engaged at the bottom of the first bevel gear 8. The bottom of the second bevel gear 9 is fixedly connected to the turbine fan blade 10; A third bevel gear 13 is provided outside the driving shaft 7. A fourth bevel gear 14 is engaged at the bottom of the third bevel gear 13. The bottom of the fourth bevel gear 14 is fixedly connected to the rotating shaft 15; The bottom of the turbine fan blade 10 is rotatably connected to the air intake valve 11. A filter block is provided outside the air intake valve 11. The air intake valve 11 is fixedly connected to the base 3; The top of the air intake valve 11 is connected to the partition shell 5 through a pipeline. A first sprocket 19 is provided at the bottom of each of the two groups of second bevel gears 9. A chain 20 is engaged outside the first sprocket 19. A second sprocket 21 is engaged outside the chain 20. A reciprocating threaded shaft 22 is connected to the bottom of the second sprocket 21. A threaded sleeve 23 is provided outside the reciprocating threaded shaft 22. A cleaning brush 24 is connected to the outside of the threaded sleeve 23. The surface of the cleaning brush 24 is attached to the air outlet net 25; The front end of the cleaning brush 24 is slidably connected to a sliding rod 35, and protective shells are provided on the outer sides of both the reciprocating threaded shaft 22 and the sliding rod 35. Moreover, an adsorption groove 26 is provided at the bottom of the reciprocating threaded shaft 22. An adhesive layer is provided inside the adsorption groove 26, and the surface of the cleaning brush 24 can be attached to the adhesive layer provided inside the adsorption groove 26; The adsorption groove 26 is fixedly connected to the inside of the device main body 1, and a fixing mechanism for fixing the coil body 4 is provided inside the device main body 1. The fixing mechanism includes two fixing shells 27. A flow guiding piece 28 is provided in the middle of the fixing shell 27, and the two fixing shells 27 are connected by a connecting damper 29. Moreover, a fixing seat 36 is provided at the bottom of the fixing shell 27. The fixing shell 27 transmits wind power to the inside of the coil body 4 through the flow guiding piece 28 for heat dissipation; The fixing seat 36 is fixedly connected to the inside of the device main body 1 by bolts, and a ventilation mechanism is provided on each of the left and right sides of the device main body 1. The ventilation mechanism includes a rain shelter 30, and a rain blocking piece 31 is provided inside the rain shelter 30; A connecting shaft 32 is provided on the outer side of the rain blocking piece 31, and the outer side of the rain blocking piece 31 is rotatably connected to the rain shelter 30 through the connecting shaft 32. Moreover, a fitting pad 33 is provided at the bottom of the rain blocking piece 31. The fitting pad 33 is a kind of sealing pad. When the rain blocking piece 31 freely falls, the fitting surface of the fitting pad 33 will overlap and seal with the outer side of the bottom rain blocking piece 31; The rain shelter 30 is fixedly connected to the outer side of the device main body 1, and a group of heat dissipation fins 34 are provided on each of the front and rear sides of the device main body 1. The heat dissipation fins 34 are composed of heat conductive materials. When the front ends of the two sides of the device main body 1 generate heat, the heat dissipation fins 34 will absorb the heat and transmit it to the outside for heat dissipation. A temperature sensor 37 is provided inside the device main body 1, and the temperature sensor 37 performs information transmission work through a remote device.

[0028] Working principle: When using this 220 kV transformer with low loss, first connect the device to an external power supply, then install the partition shell 5 inside the device main body 1 to form two areas. Subsequently, install the coil body 4 and other transformer parts in the two areas inside the device main body 1, so that the device main body 1 forms a complete transformer. When the circuit is connected to this device, it can be connected through the bracket provided at the top of the connecting frame 2. Moreover, when this device is dissipating heat, the intake mechanism and the exhaust mechanism inside the partition shell 5 can be started to operate, so that the turbine fan blade 10 transmits gas to the inside of the partition shell 5 through the intake valve 11. Subsequently, the rotating shaft 15 drives the fifth bevel gear 16 to rotate, and the fifth bevel gear 16 drives two groups of sixth bevel gears 17 to rotate, so that the sixth bevel gear 17 drives the exhaust fan blade 18 to rotate. Thus, the air flow inside the partition shell 5 is blown towards the exhaust net 25 under the guidance of the exhaust fan blade 18, so that the air flows are released from the left and right sides of the partition shell 5 to dissipate heat from the two areas inside the device main body 1; When the separation shell 5 drives the intake mechanism and the exhaust mechanism to operate, the drive motor 6 in the drive mechanism can drive the drive shaft 7 to rotate, so that the drive shaft 7 drives the first bevel gear 8 and the third bevel gear 13 to operate, so that the first bevel gear 8 drives the second bevel gear 9 to rotate, so that the second bevel gear 9 drives the turbine fan blade 10 to operate. At the same time, the third bevel gear 13 also drives the fourth bevel gear 14 to rotate, so that the fourth bevel gear 14 drives the rotating shaft 15 to rotate, so that the exhaust fan blade 18 operates; When the second bevel gear 9 is operating, the first sprocket 19 at the bottom will also rotate accordingly, so that the first sprocket 19 drives the second sprocket 21 to rotate through the chain 20, enabling the second sprocket 21 to drive the reciprocating threaded shaft 22 to rotate, so that the reciprocating threaded shaft 22 drives the threaded sleeve 23 to move up and down, so that the threaded sleeve 23 drives the cleaning brush 24 to move up and down, so that the cleaning brush 24 adsorbs the dust on the surface of the air outlet net 25. Subsequently, when the cleaning brush 24 descends to the adsorption groove 26, the adsorption groove 26 will also adsorb the dust on the surface of the cleaning brush 24, so that the cleaning brush 24 will not have too much dust during short-term use; When the device main body 1 fixes other transformer devices such as the fixed coil body 4, it can be fixed through the fixed shell 27. When the air flow passes through the outside of the fixed shell 27, the guide vanes 28 on the outside of the fixed shell 27 will transmit the gas to the inside of the coil body 4 or other devices, so that heat accumulation will not occur inside the coil body 4 or other devices. And through the setting of the heat dissipation fins 34, when the heat inside the device main body 1 is driven by the air flow, the heat of the device main body 1 shell will be transmitted to the heat dissipation fins 34, so that the heat dissipation fins 34 dissipate heat outward, making the device more convenient for heat dissipation; When the device main body 1 discharges the internal gas, due to the too strong internal air flow, the rain shield 31 will rotate outward along the connecting shaft 32, thus opening the gap at the rain shelter 30, so that the internal air flow of the device main body 1 is discharged through the rain shelter 30. When the internal air flow of the device main body 1 is too small, the rain shield 31 will only open a very small gap or not open the gap, thus avoiding rainwater entering the device main body 1 due to too large a gap in rainy weather. When the rain shields 31 are overlapped and sealed, the fitting pads 33 at the bottom of the rain shield 31 will fit with the outside of the bottom rain shield 31, so that multiple rain shields 31 form a sealed state to block the gap. When observing the temperature inside the device main body 1, the temperature sensor 37 can be connected to the remote device to observe the temperature inside the device main body 1.

[0029] Thus, a series of work is completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in all respects, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A 220 kV transformer with low loss, comprising a device main body (1) and a coil main body (4) arranged inside the device main body (1). The top of the coil main body (4) is electrically connected to a connecting frame (2), and a base (3) is provided at the bottom of the device main body (1). It is characterized in that: A partition shell (5) is arranged inside the device main body (1) to divide the inside of the device main body (1) into two regions. An air outlet net (25) is arranged outside the partition shell (5). An air intake mechanism and an air outlet mechanism are arranged inside the partition shell (5). The air intake mechanism includes a turbine fan blade (10), and an air intake valve (11) is arranged at the bottom of the turbine fan blade (10). The air outlet mechanism includes a device shell (12). Two groups of rotating shafts (15) are arranged inside the device shell (12). A fifth bevel gear (16) is arranged outside the rotating shaft (15). Two groups of sixth bevel gears (17) are meshed at the top of the fifth bevel gear (16). The sixth bevel gear (17) passes through the device shell (12) to connect an air outlet fan blade (18). The air outlet fan blade (18) is located inside the air outlet net (25). The partition shell (5) can drive the air intake mechanism and the air outlet mechanism to operate synchronously.

2. A 220 kV transformer with low losses according to claim 1, characterized in that, A driving mechanism is arranged inside the partition shell (5). The driving mechanism includes a driving motor (6). A driving shaft (7) is arranged at the front end of the driving motor (6). A first bevel gear (8) is arranged outside the driving shaft (7). A second bevel gear (9) is meshed at the bottom of the first bevel gear (8). The bottom of the second bevel gear (9) is fixedly connected to the turbine fan blade (10). A third bevel gear (13) is arranged outside the driving shaft (7). A fourth bevel gear (14) is meshed at the bottom of the third bevel gear (13). The bottom of the fourth bevel gear (14) is fixedly connected to the rotating shaft (15).

3. A low-loss 220 kV transformer according to claim 2, characterized in that, The bottom of the turbine fan blade (10) is rotatably connected to the air intake valve (11). A filter block is arranged outside the air intake valve (11). The air intake valve (11) is fixedly connected to the base (3).

4. A 220 kV transformer with low losses according to claim 3, characterized in that, The top of the air intake valve (11) is connected to the partition shell (5) through a pipeline. A first sprocket (19) is arranged at the bottom of each of the two groups of second bevel gears (9). A chain (20) is meshed outside the first sprocket (19). A second sprocket (21) is meshed outside the chain (20). A reciprocating threaded shaft (22) is connected to the bottom of the second sprocket (21). A threaded sleeve (23) is arranged outside the reciprocating threaded shaft (22). A cleaning brush (24) is connected to the outside of the threaded sleeve (23). The surface of the cleaning brush (24) is attached to the air outlet net (25).

5. A low-loss 220 kV transformer according to claim 4, characterized in that, A sliding rod (35) is slidably connected to the front end of the cleaning brush (24). Protective shells are arranged outside the reciprocating threaded shaft (22) and the sliding rod (35). An adsorption groove (26) is arranged at the bottom of the reciprocating threaded shaft (22). An adhesive layer is arranged inside the adsorption groove (26). The surface of the cleaning brush (24) can be attached to the adhesive layer arranged inside the adsorption groove (26).

6. A low-loss 220 kV transformer according to claim 5, characterized in that, The adsorption tank (26) is fixedly connected to the inside of the device main body (1), and a fixing mechanism is provided inside the device main body (1) to fix the coil body (4). The fixing mechanism includes two fixing shells (27). A flow guide piece (28) is provided in the middle of the fixing shell (27). The two fixing shells (27) are connected by a connecting damper (29). A fixing seat (36) is provided at the bottom of the fixing shell (27). The fixing shell (27) transmits wind power to the inside of the coil body (4) through the flow guide piece (28) for heat dissipation.

7. A low-loss 220 kV transformer according to claim 6, characterized in that, The fixing seat (36) is fixedly connected to the inside of the device main body (1) by bolts. A ventilation mechanism is provided on each of the left and right sides of the device main body (1). The ventilation mechanism includes a rain shelter (30). A rain shield (31) is provided inside the rain shelter (30).

8. A low-loss 220 kV transformer according to claim 7, characterized in that, A connecting shaft (32) is provided on the outer side of the rain shield (31). The outer side of the rain shield (31) is rotatably connected to the rain shelter (30) through the connecting shaft (32). A fitting pad (33) is provided at the bottom of the rain shield (31). The fitting pad (33) is a kind of sealing pad. When the rain shield (31) falls freely, the fitting surface of the fitting pad (33) will overlap and seal with the outer side of the bottom rain shield (31).

9. A low-loss 220 kV transformer according to claim 8, characterized in that, The rain shelter (30) is fixedly connected to the outside of the device main body (1). A set of heat dissipation fins (34) is provided on each of the front and rear sides of the device main body (1). The heat dissipation fins (34) are composed of heat-conducting materials. When the shells at both ends of the front end of the device main body (1) generate heat, the heat dissipation fins (34) will absorb the heat and transmit it to the outside for heat dissipation. A temperature sensor (37) is provided inside the device main body (1).

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