A low-loss 220 kV transformer

Abstract

The present invention discloses a low-loss 220 kV transformer, in the technical field of low-loss transformers, wherein the top of the coil body is electrically connected to the connecting frame; a partition shell is provided inside the device body to divide the inside of the device body into two areas, and an air outlet net is provided on the outside of the partition shell, and an air intake mechanism and an air outlet mechanism are provided inside the partition shell, the air intake mechanism includes turbine blades, and an air intake valve is provided at the bottom of the turbine blades, and the air outlet mechanism includes a device shell, two sets of rotating shafts are provided inside the device shell, and a fifth bevel gear is provided on the outside of the rotating shaft, and two sets of sixth bevel gears are engaged with the top of the fifth bevel gear, and the sixth bevel gear passes through the device shell to connect to the air outlet blades. By arranging the air intake mechanism and the air outlet mechanism inside the partition shell, wind can be blown out from the left and right sides of the partition shell to cool the coil body and other internal equipment, so that heat can be better dissipated when the transformer is running, thereby achieving the effect of reducing losses.

Description

Technical Field

[0001] The present invention relates to the technical field of low-loss transformers, and in particular to a low-loss 220 kV transformer. Background Art

[0002] Low-loss transformers are 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, optimized manufacturing processes, or reasonable operation and maintenance. However, existing low-loss transformers have some shortcomings, such as:

[0003] Application number: CN202411341579.8 is a low-loss, high-impedance power transformer. The device ensures that the power transformer body and the reactor are cooled separately while also facilitating maintenance work on the power transformer body and the reactor. However, in actual use, the device 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 device to be unable to dissipate, which may make it difficult to reduce the loss of the transformer due to internal heat problems.

[0004] Therefore, we proposed a low-loss 220 kV transformer to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a low-loss 220 kV transformer to solve the problem raised in the above background technology that most low-loss transformers on the 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 be unable to dissipate, and thus may cause the loss of the transformer to be difficult to reduce due to internal heat problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-loss 220 kV transformer, comprising a device body and a coil body disposed within the device body, wherein the top of the coil body is electrically connected to a connecting frame, and a base is disposed at the bottom of the device body;

[0007] A partition shell is provided inside the device body to divide the inside of the device body into two areas, and an air outlet net is provided on the outside of the partition shell, and an air intake mechanism and an air outlet mechanism are provided inside the partition shell, the air intake mechanism includes turbine blades, and an air intake valve is provided at the bottom of the turbine blades, and the air outlet mechanism includes a device shell, two sets of rotating shafts are provided inside the device shell, and a fifth bevel gear is provided on the outside of the rotating shaft, and two sets of sixth bevel gears are engaged with the top of the fifth bevel gear, and the sixth bevel gear passes through the device shell to connect the air outlet blades, and the air outlet blades are located on the inside of the air outlet net, and the partition shell can drive the air intake mechanism and the air outlet mechanism to operate synchronously.

[0008] By setting a partition shell inside the main body of the device to divide the internal area into two groups, excessive iron core accumulation can be avoided and heat increase can be prevented. By setting an air intake mechanism and an air outlet mechanism inside the partition shell, wind can be blown out from the left and right sides of the partition shell to cool the coil body and other internal equipment, so that the heat can be better dissipated when the transformer is running, thereby achieving the effect of reducing losses.

[0009] As a preferred technical solution of the present invention, a drive mechanism is provided inside the partition shell, and the drive mechanism includes a drive motor, and a drive shaft is provided at the front end of the drive motor, a first bevel gear is provided on the outside of the drive shaft, and a second bevel gear is meshed with the bottom of the first bevel gear, and the bottom of the second bevel gear is fixedly connected to the turbine blade;

[0010] A third bevel gear is provided on the outside of the driving shaft, and a fourth bevel gear is meshed at the bottom of the third bevel gear, and the bottom of the fourth bevel gear is fixedly connected to the rotating shaft.

[0011] The adoption of 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.

[0012] As a preferred technical solution of the present invention, the bottom of the turbine blade is rotationally connected to the intake valve, a filter block is provided on the outside of the intake valve, and the intake valve is fixedly connected to the base.

[0013] The above technical solution enables the air intake valve to filter the air through the filter block when transmitting the air to the interior of the separation shell, thereby preventing excessive dust from entering the device body and increasing the protection of the device during heat dissipation.

[0014] As a preferred technical solution of the present invention, the top of the intake valve is connected to the partition shell pipe, and a first sprocket is provided at the bottom of each of the two groups of second bevel gears, and a chain is engaged with the outside of the first sprocket, and a second sprocket is engaged with the outside of the chain, and a reciprocating threaded shaft is connected to the bottom of the second sprocket, and a threaded sleeve is provided on the outside of the reciprocating threaded shaft, a cleaning brush is connected to the outside of the threaded sleeve, and the surface of the cleaning brush is in contact with the air outlet net, and the surface of the cleaning brush is sticky.

[0015] The adoption of the above technical solution enables the dust on the surface of the air outlet net to be cleaned and adsorbed by a cleaning brush when the air is being discharged, thereby making it more convenient to clean the dust inside the device.

[0016] As a preferred technical solution of the present invention, the front end of the cleaning brush is slidably connected to a sliding rod, and protective shells are provided on the outside of the reciprocating threaded shaft and the sliding rod, and an adsorption groove is provided at the bottom of the reciprocating threaded shaft, and an adhesive layer is provided inside the adsorption groove, and the surface of the cleaning brush can be fitted with the adhesive layer provided inside the adsorption groove, and the viscosity of the adhesive layer is greater than that of the cleaning brush.

[0017] The above technical solution enables the cleaning brush to absorb dust on its surface through the adsorption groove during the process of lifting and lowering back and forth, thereby avoiding the cleaning brush being full of dust on its surface in a short period of time and increasing the efficiency of the equipment in cleaning.

[0018] As a preferred technical solution of the present invention, the adsorption groove is fixedly connected to the inside of the device body, and a fixing mechanism is provided inside the device body to fix the coil body, and the fixing mechanism includes two groups of fixed shells, a guide plate is provided in the middle of the fixed shell, and the two groups of fixed shells are connected by connecting damping, and a fixing seat is provided at the bottom of the fixed shell, and the fixed shell transmits wind force to the inside of the coil body through the guide plate for heat dissipation.

[0019] The adoption of the above technical solution can make it more convenient to fix the coil body inside the device body, and through the setting of the guide plate, the guide plate can guide the wind brought by the air outlet network 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.

[0020] As a preferred technical solution of the present invention, the fixing seat is fixedly connected to the inside of the device body by bolts, and a group of ventilation mechanisms are respectively provided on the left and right sides of the device body, and the ventilation mechanism includes a rainproof canopy, and a rain shield is provided inside the rainproof canopy.

[0021] The adoption of the above technical solution enables the rainproof shed to protect the openings on the left and right sides of the device body, thereby increasing the protectiveness and rainproof performance of the equipment.

[0022] As a preferred technical solution of the present invention, a connecting shaft is provided on the outside of the rain shield, and the outside of the rain shield is rotatably connected to the rainproof awning through the connecting shaft, and a fitting pad is provided on the bottom of the rain shield, which is a kind of sealing pad, and when the rain shield is freely falling, the fitting surface of the fitting pad will overlap and seal with the outside of the rain shield at the bottom.

[0023] The above technical solution can make it possible for the airflow inside the main body of the device to blow up the rain shield when the airflow inside the main body of the device is too strong, so that the rain shield can rotate along the connecting axis as the center of the circle to open a gap for heat dissipation, and when there is no strong airflow inside the main body of the device, the rain shields will overlap with each other, so that the bonding pad at the bottom of the rain shield overlaps with the surface of the rain shield at the bottom to form a seal, thereby increasing the sealing and air venting properties of the device.

[0024] As a preferred technical solution of the present invention, the rainproof canopy is fixedly connected to the outside of the device body, and a group of heat dissipation fins are respectively provided on the front and rear sides of the device body, and the heat dissipation fins are made of heat-conductive material, and when the shells at both ends of the front end of the device body are heated, the heat dissipation fins will absorb the heat and transfer it to the outside for heat dissipation, and a temperature sensor is provided inside the device body, and the temperature sensor transmits information through a remote device.

[0025] The above technical solution enables the air flow inside the device to transfer heat through the device body to the heat sink fins when it flows, so that the heat sink fins absorb the heat and dissipate it externally, thereby increasing the efficiency of the device in heat dissipation.

[0026] Compared with the prior art, the present invention has the following advantages: by providing a partition shell inside the device body to divide the internal area into two groups, it is possible to avoid excessive iron core accumulation and prevent heat increase; and by providing an air intake mechanism and an air outlet mechanism inside the partition shell, it is possible to blow air from the left and right sides of the partition shell to cool the coil body and other internal equipment, thereby enabling the heat to be better dissipated during operation of the transformer, thereby achieving the effect of reducing losses;

[0027] Furthermore, by providing the reciprocating threaded shaft and the cleaning brush, the dust on the surface of the air outlet net can be cleaned and adsorbed by the cleaning brush when the air outlet net is discharging, thereby making it more convenient to clean the dust inside the device.

[0028] Furthermore, by providing the rain shield and the rainproof canopy, when the airflow inside the main body of the device is too strong, the airflow can blow up the rain shield, so that the rain shield can rotate along the connecting axis as the center to open a gap for heat dissipation, and when there is no strong airflow inside the main body of the device, the rain shields will overlap with 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, thereby increasing the sealing and air venting properties of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the front elevation structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the front cross section of the present invention;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the side cross-section of the present invention;

[0032] Figure 4 It is a schematic side perspective structural diagram of the partition shell of the present invention;

[0033] Figure 5Schematic diagram of the three-dimensional structure of the partition shell of the present invention;

[0034] Figure 6 It is a schematic diagram of the cross-sectional elevation structure of the partition shell of the present invention;

[0035] Figure 7 Schematic diagram of the three-dimensional structure of the turbine blade of the present invention;

[0036] Figure 8 Schematic diagram of the three-dimensional structure of the air outlet fan blade of the present invention;

[0037] Figure 9 For the present invention Figure 8 A schematic diagram of the enlarged structure at point A;

[0038] Figure 10 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention;

[0039] Figure 11 For the present invention Figure 10 A schematic diagram of the enlarged structure at point B;

[0040] Figure 12 is a schematic diagram of the three-dimensional structure of the fixed shell of the present invention;

[0041] Figure 13 Schematic diagram of the three-dimensional structure of the rain shield of the present invention;

[0042] Figure 14 It is a schematic diagram of the enlarged three-dimensional structure of the parts of the rain shield of the present invention.

[0043] In the figure: 1. Device 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. Inlet valve; 12. Device shell; 13. Third bevel gear; 14. Fourth bevel gear; 15. Rotating shaft; 16. Fifth bevel gear; 17. Sixth bevel gear; 18. Exhaust fan blade; 19. First sprocket; 20. Chain; 21. Second sprocket; 22. Reciprocating threaded shaft; 23. Threaded sleeve; 24. Cleaning brush; 25. Exhaust net; 26. Adsorption groove; 27. Fixed shell; 28. Guide vane; 29. ​​Connection damper; 30. Rainproof shed; 31. Rain shield; 32. Connecting shaft; 33. Fitting pad; 34. Heat dissipation fin; 35. Sliding rod; 36. Fixed seat; 37. Temperature sensor. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] See also Figures 1-14 The present invention provides a technical solution: a low-loss 220 kV transformer, comprising a device body 1 and a coil body 4 disposed inside the device body 1, wherein 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 body 1;

[0046] A partition shell 5 is provided inside the device body 1 to divide the inside of the device body 1 into two areas, and an air outlet net 25 is provided on the outside of the partition shell 5, and an air intake mechanism and an air outlet mechanism are provided inside the partition shell 5, the air intake mechanism includes a turbine blade 10, and an air intake valve 11 is provided at the bottom of the turbine blade 10, and the air outlet mechanism includes a device shell 12, two sets of rotating shafts 15 are provided inside the device shell 12, and a fifth bevel gear 16 is provided on the outside of the rotating shaft 15, and two sets of sixth bevel gears 17 are meshed with the top of the fifth bevel gear 16, and the sixth bevel gear 17 passes through the device shell 12 to connect to the air outlet blade 18, and the air outlet 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;

[0047] The partition shell 5 is installed inside the device body 1 to form two areas, and then the coil body 4 and other transformer parts are installed in the two areas inside the device body 1, so that the device body 1 forms a complete transformer. When the circuit is connected to the device, it can be connected through the bracket provided on the top of the connecting frame 2, and when the device is dissipating heat, the air intake mechanism and the air outlet mechanism inside the partition shell 5 can be started to operate, so that the turbine fan blades 10 transmit the gas to the inside of the partition shell 5 through the air intake valve 11, and then the rotating shaft 15 drives the fifth bevel gear 16 to rotate, and the fifth bevel gear 16 drives the two sets of sixth bevel gears 17 to rotate, so that the sixth bevel gear 17 drives the air outlet blades 18 to rotate, so that the air flow inside the partition shell 5 is blown to the air outlet net 25 under the guidance of the air outlet blades 18, so that the air flow is released on the left and right sides of the partition shell 5 to dissipate heat for the two areas inside the device body 1;

[0048] A drive mechanism is provided inside the partition shell 5, and the drive mechanism includes a drive motor 6, and a drive shaft 7 is provided at the front end of the drive motor 6. A first bevel gear 8 is provided on the outside of the drive shaft 7, and a second bevel gear 9 is engaged with the bottom of the first bevel gear 8, and the bottom of the second bevel gear 9 is fixedly connected to the turbine blade 10; a third bevel gear 13 is provided on the outside of the drive shaft 7, and a fourth bevel gear 14 is engaged with the bottom of the third bevel gear 13, and the bottom of the fourth bevel gear 14 is fixedly connected to the rotating shaft 15;

[0049] The bottom of the turbine blade 10 is rotatably connected to the air intake valve 11, and a filter block is provided on the outside of the air intake valve 11, and the air intake valve 11 is fixedly connected to the base 3;

[0050] The top of the intake valve 11 is connected to the pipe of the partition shell 5, and the bottom of each of the two sets of second bevel gears 9 is provided with a first sprocket 19, and the outer side of the first sprocket 19 is meshed with a chain 20, and the outer side of the chain 20 is meshed with a second sprocket 21, and the bottom of the second sprocket 21 is connected to a reciprocating threaded shaft 22, and the outer side of the reciprocating threaded shaft 22 is provided with a threaded sleeve 23, and the outer side of the threaded sleeve 23 is connected to a cleaning brush 24, and the surface of the cleaning brush 24 is in contact with the air outlet net 25;

[0051] The front end of the cleaning brush 24 is slidably connected to a sliding rod 35, and a protective shell is provided on the outside of the reciprocating threaded shaft 22 and the sliding rod 35. The bottom of the reciprocating threaded shaft 22 is provided with an adsorption groove 26, and an adhesive layer is provided inside the adsorption groove 26. The surface of the cleaning brush 24 can be bonded to the adhesive layer provided inside the adsorption groove 26.

[0052] The adsorption groove 26 is fixedly connected to the inside of the device body 1, and a fixing mechanism is provided inside the device body 1 to fix the coil body 4. The fixing mechanism includes two sets of fixed shells 27, and a guide vane 28 is provided in the middle of the fixed shell 27. The two sets of fixed shells 27 are connected by a connecting damper 29, and a fixing seat 36 is provided at the bottom of the fixed shell 27. The fixed shell 27 transmits wind power to the inside of the coil body 4 through the guide vane 28 for heat dissipation.

[0053] The fixing seat 36 is fixedly connected to the inside of the device body 1 by bolts, and a set of ventilation mechanisms are provided on the left and right sides of the device body 1, and the ventilation mechanisms include a rainproof canopy 30, and a rain shield 31 is provided inside the rainproof canopy 30;

[0054] A connecting shaft 32 is provided on the outside of the rain shield 31, and the outside of the rain shield 31 is rotatably connected to the rainproof canopy 30 via the connecting shaft 32. A fitting pad 33 is provided at the bottom of the rain shield 31. The fitting pad 33 is a type of sealing pad. When the rain shield 31 is in free fall, the fitting surface of the fitting pad 33 will overlap and seal the outside of the rain shield 31 at the bottom.

[0055] The rainproof canopy 30 is fixedly connected to the outside of the device body 1, and a group of heat dissipation fins 34 are respectively provided on the front and rear sides of the device body 1. The heat dissipation fins 34 are made of heat-conducting material. When the shells at both ends of the front end of the device body 1 are heated, the heat dissipation fins 34 will absorb the heat and transfer it to the outside for heat dissipation. A temperature sensor 37 is provided inside the device body 1, and the temperature sensor 37 transmits information through a remote device.

[0056] Working principle: When using the low-loss 220 kV transformer, first connect the device to an external power source, then install the partition shell 5 inside the device body 1 to form two areas, and then install the coil body 4 and other transformer parts in the two areas inside the device body 1, so that the device body 1 forms a complete transformer. When the circuit is connected to the device, it can be connected through the bracket provided on the top of the connecting frame 2, and when the device is dissipating heat, the air intake mechanism and the air outlet mechanism inside the partition shell 5 can be started to operate, so that the turbine blades 10 transmit the gas to the inside of the partition shell 5 through the air intake valve 11, and then the rotating shaft 15 drives the fifth bevel gear 16 to rotate, and the fifth bevel gear 16 drives the two sets of sixth bevel gears 17 to rotate, so that the sixth bevel gear 17 drives the outlet fan blades 18 to rotate, so that the air flow inside the partition shell 5 is blown to the outlet net 25 under the guidance of the outlet fan blades 18, so that the left and right sides of the partition shell 5 release air flow to dissipate heat in the two areas inside the device body 1;

[0057] When the partition shell 5 drives the air intake mechanism and the air outlet 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 blades 10 to operate, and 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 blades 18 operate;

[0058] When the second bevel gear 9 is running, the first sprocket 19 at the bottom will also rotate, so that the first sprocket 19 drives the second sprocket 21 to rotate through the chain 20, which can make the second sprocket 21 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 absorbs the dust on the surface of the air outlet net 25, and then when the cleaning brush 24 descends to the adsorption groove 26, the adsorption groove 26 also absorbs the dust on the surface of the cleaning brush 24, so that the cleaning brush 24 will not be too dusty when used for a short time;

[0059] When fixing the coil body 4 or other transformer equipment, the device body 1 can be fixed by the fixing shell 27. When the airflow passes through the outside of the fixing shell 27, the guide plate 28 on the outside of the fixing shell 27 will transfer the gas to the inside of the coil body 4 or other equipment, so that heat accumulation will not occur inside the coil body 4 or other equipment. In addition, by setting the heat dissipation fins 34, the heat inside the device body 1 can be driven by the airflow to flow, and the outer shell of the device body 1 will transfer the heat to the heat dissipation fins 34, so that the heat dissipation fins 34 can dissipate heat outward, which can make the device more convenient when dissipating heat.

[0060] When the device body 1 is discharging the internal gas, the internal airflow is too strong, which will cause the rain shield 31 to rotate outward along the connecting shaft 32, thereby opening the gap at the rainproof canopy 30, so that the airflow inside the device body 1 is discharged through the rainproof canopy 30. When the airflow inside the device body 1 is too small, the rain shield 31 will only open a very small gap or no gap, thereby preventing rainwater from entering the device body 1 due to a large gap in rainy weather. When the rain shield 31 is overlapped and sealed, the bonding pad 33 at the bottom of the rain shield 31 will fit with the outer side of the bottom rain shield 31, so that multiple groups of rain shields 31 form a sealed state to block the gap. When observing the temperature inside the device body 1, a remote device can be connected through the temperature sensor 37 to observe the temperature inside the device body 1.

[0061] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A low-loss 220 kV transformer, comprising a device body (1), a coil body (4) arranged inside the device body (1), the top of the coil body (4) being electrically connected to a connecting frame (2), and a base (3) being provided at the bottom of the device body (1); Its characteristics are: The device body (1) is provided with a partition shell (5) inside to divide the inside of the device body (1) into two areas, and an air outlet net (25) is provided outside the partition shell (5), and an air intake mechanism and an air outlet mechanism are provided inside the partition shell (5), the air intake mechanism includes a turbine blade (10), and an air intake valve (11) is provided at the bottom of the turbine blade (10), and the air outlet mechanism includes a device shell (12), two sets of rotating shafts (15) are provided inside the device shell (12), and a fifth bevel gear (16) is provided outside the rotating shaft (15), and two sets of sixth bevel gears (17) are meshed at the top of the fifth bevel gear (16). , and the sixth bevel gear (17) passes through the device shell (12) and is connected to the air outlet fan blade (18), and the air outlet fan blade (18) is located inside the air outlet net (25), and the partition shell (5) can drive the air intake mechanism and the air outlet mechanism to operate synchronously; a driving mechanism is provided inside the partition shell (5), and the driving mechanism includes a driving motor (6), and a driving shaft (7) is provided at the front end of the driving motor (6), and a first bevel gear (8) is provided on the outside of the driving shaft (7), and the bottom of the first bevel gear (8) is meshed with a second bevel gear (9), and the bottom of the second bevel gear (9) is fixedly connected to the turbine fan blade (10); The outside of the drive shaft (7) is provided with a third bevel gear (13), and the bottom of the third bevel gear (13) is meshed with a fourth bevel gear (14), and the bottom of the fourth bevel gear (14) is fixedly connected to the rotating shaft (15); the bottom of the turbine blade (10) is rotatably connected to the intake valve (11), and a filter block is provided on the outside of the intake valve (11), and the intake valve (11) is fixedly connected to the base (3); the top of the intake valve (11) is connected to the pipeline of the partition shell (5), and The bottom of each of the two sets of second bevel gears (9) is provided with a first sprocket (19), and a chain (20) is meshed on the outside of the first sprocket (19), and a second sprocket (21) is meshed on the outside of the chain (20), and a reciprocating threaded shaft (22) is connected to the bottom of the second sprocket (21), and a threaded sleeve (23) is provided on the outside of the reciprocating threaded shaft (22), and a cleaning brush (24) is connected to the outside of the threaded sleeve (23), and the surface of the cleaning brush (24) is in contact with the air outlet net (25).

2. A low-loss 220 kV transformer according to claim 1, characterized in that: The front end of the cleaning brush (24) is slidably connected to a sliding rod (35), and protective shells are provided on the outside of the reciprocating threaded shaft (22) and the sliding rod (35), and an adsorption groove (26) is provided at the bottom of the reciprocating threaded shaft (22), and an adhesive layer is provided inside the adsorption groove (26), and the surface of the cleaning brush (24) can be bonded to the adhesive layer provided inside the adsorption groove (26).

3. A low-loss 220 kV transformer according to claim 2, characterized in that: The adsorption groove (26) is fixedly connected to the inside of the device body (1), and a fixing mechanism is provided inside the device body (1) to fix the coil body (4), and the fixing mechanism includes two groups of fixed shells (27), a guide plate (28) is provided in the middle of the fixed shell (27), and the two groups of fixed shells (27) are connected by a connecting damper (29), and a fixing seat (36) is provided at the bottom of the fixed shell (27), and the fixed shell (27) transmits wind power to the inside of the coil body (4) through the guide plate (28) for heat dissipation.

4. A low-loss 220 kV transformer according to claim 3, characterized in that: The fixing seat (36) is fixedly connected to the inside of the device body (1) by bolts, and a set of ventilation mechanisms is provided on the left and right sides of the device body (1), and the ventilation mechanisms include a rainproof shed (30), and a rain shield (31) is provided inside the rainproof shed (30).

5. A low-loss 220 kV transformer according to claim 4, characterized in that: The outer side of the rain shield (31) is provided with a connecting shaft (32), and the outer side of the rain shield (31) is rotatably connected to the rainproof awning (30) through the connecting shaft (32), and a fitting pad (33) is provided at the bottom of the rain shield (31). The fitting pad (33) is a kind of sealing pad, and when the rain shield (31) is in free fall, the fitting surface of the fitting pad (33) will overlap and seal with the outer side of the bottom rain shield (31).

6. A low-loss 220 kV transformer according to claim 5, characterized in that: The outer side of the rainproof canopy (30) device body (1) is sealed and fixedly connected, and a group of heat dissipation fins (34) are respectively provided on the front and rear sides of the device body (1), and the heat dissipation fins (34) are made of heat-conducting material. When the shells at both ends of the front end of the device body (1) are heated, the heat dissipation fins (34) absorb the heat and transfer it to the outside for heat dissipation. A temperature sensor (37) is provided inside the device body (1).

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