A low-loss transformer

Abstract

The application discloses a low-loss transformer, comprising a transformer body, wherein a heat dissipation part is arranged on the transformer body, the heat dissipation part comprises a shell, a heat dissipation fan, a dust screen, a driving mechanism and a cleaning mechanism are arranged in the shell, the dust screen is a closed structure in the form of a conveyor belt, and the heat dissipation fan is arranged on the inner side of the dust screen. In the application, the heat dissipation fan, the dust screen and the driving mechanism are arranged, the dust screen is a closed structure in the form of a conveyor belt, the dust screen can be moved by the driving mechanism, the screen surfaces at different positions on the dust screen can filter dust, compared with a conventional fixedly-installed dust screen, the transformer can move the dust screen regularly, the screen surface part not blocked by dust can be moved to the air inlet side of the heat dissipation fan, so that the air supply amount of the heat dissipation fan is stable during long-term operation, and therefore the heat dissipation effect of the transformer is stable.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a low-loss transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer). Transformers can be classified according to their application: distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, electric furnace transformers, rectifier transformers, reactors, anti-interference transformers, lightning protection transformers, box-type transformer test transformers, angle transformers, high-current transformers, and excitation transformers. Transformers are fundamental equipment for power transmission and distribution, widely used in industry, agriculture, transportation, and urban communities.

[0003] When a transformer is running, the energy loss in the windings and core generates heat, causing the transformer to overheat. If this heat is not dissipated in time, the transformer's energy loss will increase, and it may even cause damage to the transformer's insulation, leading to power system failures. Therefore, most existing transformers are equipped with cooling devices, usually cooling fans. To reduce dust, dust filters are often installed on the cooling fans. However, during long-term operation, these dust filters may become clogged, reducing airflow and thus decreasing the transformer's heat dissipation performance. Summary of the Invention

[0004] The purpose of this invention is to provide a low-loss transformer in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-loss transformer includes a transformer body with a heat dissipation section. The heat dissipation section includes a housing, and inside the housing are a cooling fan, a dust filter, a drive mechanism, and a cleaning mechanism. The dust filter is a conveyor belt-shaped closed structure. The cooling fan is located inside the dust filter. Ventilation holes are provided on two opposite end faces of the housing. A flow guiding component is provided on the cooling fan. The drive mechanism includes a first drive component and two rotating components. A transmission component is provided at the output end of the first drive component. The rotating components include a drive shaft with multiple bushings fitted on it. A connecting plate is provided on the outer periphery of each bushing. An annular component is provided on the side of the connecting plate away from the bushing. The annular component is connected to the dust filter... The dust filter makes rolling contact; the transmission assembly includes a first rotating wheel and a second rotating wheel, which are connected by a transmission belt. The first rotating wheel is fixedly connected to the output end of the first driving component, and the second rotating wheel is fixedly connected to the drive shaft; the cleaning mechanism includes a cleaning brush and a vibration assembly. The cleaning brush is arranged along the length direction of the drive shaft and makes sliding contact with the dust filter; the vibration assembly includes a guide shaft, a limiting shaft, and a guide seat. The guide shaft and the limiting shaft both pass through the guide seat. The limiting shaft is slidably connected to the guide seat. The guide shaft is provided with a guide groove, and the guide seat is provided with a protrusion located in the guide groove; the flow guiding assembly includes a swing arm and a flow guiding plate. The swing arm is rotatably connected to the cooling fan, and the flow guiding plate is fixedly connected to the swing arm.

[0007] Preferably, the drive shaft is arranged vertically, and baffles are provided on both its upper and lower sides. The baffles are circular in structure. The dustproof net is located between two of the baffles. Multiple bushings are arranged at equal intervals along the length of the drive shaft. Multiple connecting plates are provided and are evenly arranged in a ring around the bushings. The bushings and the ring are coaxially arranged.

[0008] Preferably, the first driving member, the first rotating wheel, the second rotating wheel, and the transmission belt are all disposed on the top of the housing, and the outer diameter of the first rotating wheel is smaller than the outer diameter of the second rotating wheel.

[0009] Preferably, the cleaning brush has a strip-shaped structure, and the upper end of the cleaning brush is fixedly connected to the guide seat. The length of the cleaning brush is greater than the width of the dustproof net, and there is a 2-3mm gap between the dustproof net and the edge of the ventilation hole on the outer shell.

[0010] Preferably, the guide shaft and the limiting shaft are arranged in parallel, the guide shaft is fixedly connected to the output end of the first driving member, and the limiting shaft is fixedly connected to the outer shell.

[0011] Preferably, the guide groove has a spiral structure, and there are two guide grooves with opposite spiral directions and their ends connected to each other.

[0012] Preferably, a connecting seat is fixedly connected to the side of the cooling fan, a support shaft is fixedly connected to the lower end of the connecting seat, the support shaft is rotatably connected to the outer casing, and a connecting shaft is fixedly connected to the upper end of the connecting seat.

[0013] Preferably, a second driving component is provided inside the housing, the output end of the second driving component is connected to a drive shaft, the end of the drive shaft is fixedly connected to a worm, and the upper end of the connecting shaft is fixedly connected to a worm wheel, the worm wheel and the worm mesh with each other.

[0014] Preferably, the cooling fan is provided with swing arms on both the upper and lower sides, the air guide plate is located between the two swing arms, the bottom of the swing arm on the lower side of the cooling fan is fixedly connected with a guide bolt, the guide bolt is arranged in the vertical direction, a sliding groove is provided on the bottom surface inside the housing, the lower end of the guide bolt is located in the sliding groove, and the two are slidably connected.

[0015] Preferably, the outer casing is provided with an exhaust vent, and multiple guide plates are rotatably connected inside the exhaust vent.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. This application incorporates a cooling fan, a dust filter, and a drive mechanism. The dust filter is a conveyor belt-shaped enclosed structure. The drive mechanism moves the dust filter, allowing dust to be filtered from different parts of the screen. Compared to traditional fixed dust filters, this transformer allows the unblocked parts of the screen to be moved to the air intake side of the cooling fan by periodically moving the dust filter. This ensures a stable airflow during long-term operation of the cooling fan, thus guaranteeing stable heat dissipation for the transformer.

[0018] 2. This application uses a cleaning brush and a vibration mechanism. The vibration mechanism drives the cleaning brush to move back and forth, which can remove dust from the dustproof mesh. The vibration mechanism is equipped with a first driving component, a guide shaft, a limit shaft, and a guide seat. The guide shaft is provided with a guide groove, which is spiral in shape. Therefore, the first driving component can drive the guide shaft to rotate. Through the cooperation between the guide seat and the guide groove, the cleaning brush is driven to vibrate at a high frequency. Therefore, the vibration frequency of the cleaning brush helps to improve the cleaning effect.

[0019] 3. This application sets a guide vane on the cooling fan and sets a slide groove and guide bolt inside the housing. The cooling fan can rotate around the support shaft through the transmission mechanism. While the cooling fan moves, the guide bolt moves along the slide groove, causing the guide vane to rotate. This setting can blow the air generated by the cooling fan toward the baffle on the housing, blowing away the dust brushed off from the housing, thus keeping the dust filter clean. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a transformer according to an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of a heat dissipation unit from a first perspective, provided according to an embodiment of the present invention, is shown.

[0022] Figure 3 A schematic diagram of a heat dissipation unit provided according to an embodiment of the present invention is shown from a second perspective.

[0023] Figure 4 A schematic diagram of the dustproof net and drive mechanism provided according to an embodiment of the present invention is shown;

[0024] Figure 5 A schematic diagram of a rotating component and a cooling fan structure provided according to an embodiment of the present invention is shown;

[0025] Figure 6 It shows Figure 5 Enlarged structural diagram at point A;

[0026] Figure 7 A schematic diagram of the cleaning brush and vibration assembly structure provided according to an embodiment of the present invention is shown;

[0027] Figure 8 A schematic diagram of the guide shaft and limiting shaft structure provided according to an embodiment of the present invention is shown;

[0028] Figure 9 A schematic diagram of the first state structure of a cooling fan according to an embodiment of the present invention is shown;

[0029] Figure 10 A schematic diagram of the second state structure of a cooling fan according to an embodiment of the present invention is shown;

[0030] Figure 11 A schematic diagram of a cooling fan and air guide plate structure provided according to an embodiment of the present invention is shown.

[0031] Legend:

[0032] 1. Outer casing; 2. Cooling fan; 3. Dust filter; 4. Drive shaft; 5. Bushing; 6. Connecting plate; 7. Ring-shaped component; 8. Baffle; 9. First drive component; 10. First rotating wheel; 11. Second rotating wheel; 12. Transmission belt; 13. Guide shaft; 14. Limiting shaft; 15. Guide groove; 16. Guide seat; 17. Cleaning brush; 18. Connecting seat; 19. Support shaft; 20. Connecting shaft; 21. Worm gear; 22. Worm; 23. Transmission shaft; 24. Second drive component; 25. Swing rod; 26. Guide vane; 27. Guide bolt; 28. Slide groove; 29. ​​Guide plate; 30. Transformer body. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-11 The present invention provides a technical solution:

[0035] A low-loss transformer includes a transformer body 30, on which a heat dissipation section is provided. The heat dissipation section includes a housing 1, and inside the housing 1 are a cooling fan 2, a dustproof net 3, a drive mechanism, and a cleaning mechanism. The dustproof net 3 is a conveyor belt-shaped closed structure. The cooling fan 2 is located inside the dustproof net 3. Ventilation holes are provided on two opposite end faces of the housing 1. A flow guiding component is provided on the cooling fan 2. The drive mechanism includes a first drive member 9 and two rotating components. A transmission component is provided at the output end of the first drive member 9. The rotating components include a drive shaft 4, on which multiple bushings 5 ​​are sleeved. A connecting plate 6 is provided on the outer periphery of the bushings 5. An annular member 7 is provided on the side of the connecting plate 6 away from the bushings 5. The annular member 7 is in rolling contact with the dustproof net 3. The transmission component includes a first rotating wheel 10 and a second rotating wheel 11, which are connected by a transmission belt 12. The first rotating wheel 10 is fixedly connected to the output end of the first drive member 9, and the second rotating wheel 11 is fixedly connected to the drive shaft 4.

[0036] Specifically, such as Figure 4 and Figure 5 As shown, the drive shaft 4 is arranged vertically, and baffles 8 are provided on both its upper and lower sides. The baffles 8 are circular in structure. The dustproof net 3 is located between the two baffles 8. Multiple bushings 5 ​​are evenly spaced along the length of the drive shaft 4. Multiple connecting plates 6 are provided and are evenly arranged in a ring around the bushings 5. The bushings 5 ​​and the ring-shaped parts 7 are coaxially arranged. When the drive shaft 4 rotates, it drives the ring-shaped parts 7 to rotate synchronously. The ring-shaped parts 7 are in contact with the dustproof net 3. Under friction, the dustproof net 3 can move, thereby sending the dusty part to the cleaning mechanism, and moving the clean part without dust to the ventilation hole on the outer casing 1.

[0037] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, the first drive component 9, the first rotating wheel 10, the second rotating wheel 11, and the transmission belt 12 are all located on the top of the housing 1. The outer diameter of the first rotating wheel 10 is smaller than that of the second rotating wheel 11. Because the first rotating wheel 10 is smaller, the second rotating wheel 11 rotates at a slower speed. This speed reduction structure allows the drive shaft 4 to move the dustproof net 3 at a slower speed.

[0038] Specifically, such as Figure 4 , Figure 7 and Figure 8 As shown, the cleaning mechanism includes a cleaning brush 17 and a vibration assembly. The cleaning brush 17 is arranged along the length of the drive shaft 4 and slides in contact with the dust filter 3. The vibration assembly includes a guide shaft 13, a limiting shaft 14, and a guide seat 16. Both the guide shaft 13 and the limiting shaft 14 pass through the guide seat 16, and the limiting shaft 14 is slidably connected to the guide seat 16. The guide shaft 13 is provided with a guide groove 15, and the guide seat 16 is provided with a protrusion located within the guide groove 15. The guide shaft 13 and the limiting shaft 14 are arranged in parallel. The guide shaft 13 is fixedly connected to the output end of the first drive member 9, and the limiting shaft 14 is fixedly connected to the outer casing 1. The guide groove 15 has a spiral structure, and there are two guide grooves 15. The spiral directions of the two guide grooves 15 are opposite, and the ends of the two guide grooves 15 are interconnected. The cleaning brush 17 has a strip-shaped structure, and the upper end of the cleaning brush 17 is fixedly connected to the guide seat 16. The length of the cleaning brush 17 is greater than the width of the dustproof net 3, and there is a gap of 2-3mm between the dustproof net 3 and the edge of the ventilation hole on the outer shell 1.

[0039] The first driving member 9 can drive the guide shaft 13 to rotate, the guide groove 15 rotates around the central axis of the guide shaft 13, and the protrusion on the guide seat 16 slides in the guide groove 15, so that the guide seat 16 moves along the axial direction of the guide shaft 13. Since there are two guide grooves 15, when the protrusion enters the other guide groove 15 from one guide groove 15, the guide seat 16 moves in the opposite direction, so the guide seat 16 can move up and down reciprocally. At the same time, since the output speed of the first driving member 9 is high, the cleaning brush 17 vibrates up and down rapidly, and the cleaning brush 17 can brush away the dust on the surface of the dustproof net 3.

[0040] Specifically, such as Figure 4 , Figure 5 , Figure 6 and Figure 11As shown, a connecting seat 18 is fixedly connected to the side of the cooling fan 2. A support shaft 19 is fixedly connected to the lower end of the connecting seat 18. The support shaft 19 is rotatably connected to the outer casing 1. A connecting shaft 20 is fixedly connected to the upper end of the connecting seat 18. A second driving component 24 is provided inside the outer casing 1. A drive shaft 23 is drivenly connected to the output end of the second driving component 24. A worm gear 22 is fixedly connected to the end of the drive shaft 23. A worm wheel 21 is fixedly connected to the upper end of the connecting shaft 20. The worm wheel 21 and the worm gear 22 mesh with each other. The second driving component 24 can drive the drive shaft 23 to rotate, and further drive the worm wheel 21 to rotate through the rotation of the worm gear 22.

[0041] Specifically, such as Figure 4 , Figure 5 , Figure 9 , Figure 10 and Figure 11 As shown, the airflow guiding assembly includes a swing arm 25 and a guide vane 26. The swing arm 25 is rotatably connected to the cooling fan 2, and the guide vane 26 is fixedly connected to the swing arm 25. Swing arms 25 are provided on both the upper and lower sides of the cooling fan 2, and the guide vane 26 is located between the two swing arms 25. A guide bolt 27 is fixedly connected to the bottom of the swing arm 25 on the lower side of the cooling fan 2. The guide bolt 27 is arranged vertically, and a groove 28 is provided on the bottom surface inside the housing 1. The lower end of the guide bolt 27 is located within the groove 28, and the two are slidably connected. An exhaust port is provided on the housing 1, and multiple guide vanes 29 are rotatably connected inside the exhaust port. As the worm gear 21 rotates, the cooling fan 2 rotates around the support shaft 19. When the cooling fan 2 rotates, the guide bolt 27 moves along the slide groove 28, and the cooling fan 2 pushes the guide vane 26 to move, while simultaneously causing the guide vane 26 to deflect. At this time, the fan blows air towards the exhaust port, and the guide plate 29 rotates under the blowing force, blowing the dust swept down from the outer casing 1 out of the outer casing 1.

[0042] In summary, the low-loss transformer provided in this embodiment, during heat dissipation, the cooling fan 2 starts to circulate air and cool the transformer. After running for a period of time, the first drive component 9 starts, and through the transmission of the first rotating wheel 10 and the second rotating wheel 11, the drive shaft 4 rotates. This, in turn, drives the dustproof net 3 to move through the rotation of the annular component 7, causing the dusty part of the dustproof net 3 to move towards the cleaning mechanism, and the clean dustproof net 3 to the ventilation hole. At the same time, the first drive component 9 can also drive the guide shaft 13 to rotate. With the cooperation of the guide groove 15 and the guide seat 16, the cleaning brush 17 moves up and down quickly to brush away the dust on the dustproof net 3. The second drive component 24 starts, and through the transmission shaft 23, it drives the worm gear 22 to rotate, causing the worm wheel 21 to rotate, which in turn causes the cooling fan 2 to rotate. The guide vane 26 deflects, directing the airflow to the exhaust port and carrying the dust out of the outer casing 1.

[0043] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-loss transformer, comprising a transformer body (30), characterized in that, The transformer body (30) is provided with a heat dissipation part, which includes a shell (1). The shell (1) is provided with a cooling fan (2), a dustproof net (3), a drive mechanism and a cleaning mechanism. The dustproof net (3) is a conveyor belt-shaped closed structure. The cooling fan (2) is located inside the dustproof net (3). Ventilation holes are provided on the two opposite end faces of the shell (1). The cooling fan (2) is provided with a flow guiding component. The driving mechanism includes a first driving member (9) and two rotating components, and the output end of the first driving member (9) is provided with a transmission component; The rotating assembly includes a drive shaft (4), on which a plurality of bushings (5) are fitted. A connecting plate (6) is provided on the outer periphery of the bushings (5). An annular part (7) is provided on the side of the connecting plate (6) away from the bushings (5). The annular part (7) is in rolling contact with the dustproof net (3). The transmission assembly includes a first wheel (10) and a second wheel (11), which are connected by a transmission belt (12). The first wheel (10) is fixedly connected to the output end of the first drive member (9), and the second wheel (11) is fixedly connected to the drive shaft (4). The cleaning mechanism includes a cleaning brush (17) and a vibration assembly. The cleaning brush (17) is arranged along the length direction of the drive shaft (4), and the cleaning brush (17) slides in contact with the dustproof net (3). The vibration assembly includes a guide shaft (13), a limiting shaft (14), and a guide seat (16). Both the guide shaft (13) and the limiting shaft (14) pass through the guide seat (16). The limiting shaft (14) is slidably connected to the guide seat (16). A guide groove (15) is provided on the guide shaft (13), and a protrusion located within the guide groove (15) is provided on the guide seat (16). The cleaning brush (17) has a strip-shaped structure, and its upper end is fixedly connected to the guide seat (16). The length of the cleaning brush (17) is greater than... Regarding the width of the dustproof net (3), the dustproof net (3) has a gap of 2-3mm with the edge of the ventilation hole on the outer shell (1). The guide shaft (13) and the limiting shaft (14) are arranged in parallel. The guide shaft (13) is fixedly connected to the output end of the first driving member (9). The limiting shaft (14) is fixedly connected to the outer shell (1). The guide groove (15) is a spiral structure, and there are two guide grooves (15). The spiral directions of the two guide grooves (15) are opposite, and the ends of the two guide grooves (15) are connected to each other. The airflow guiding assembly includes a swing arm (25) and an airflow guiding plate (26). The swing arm (25) is rotatably connected to the cooling fan (2), and the airflow guiding plate (26) is fixedly connected to the swing arm (25).

2. A low-loss transformer according to claim 1, characterized in that, The drive shaft (4) is arranged vertically, and baffles (8) are provided on both its upper and lower sides. The baffles (8) are circular. The dustproof net (3) is located between the two baffles (8). Multiple bushings (5) are arranged at equal intervals along the length of the drive shaft (4). Multiple connecting plates (6) are provided and are evenly arranged in a ring around the bushings (5). The bushings (5) and the ring piece (7) are coaxially arranged.

3. A low-loss transformer according to claim 1, characterized in that, The first drive member (9), the first wheel (10), the second wheel (11) and the transmission belt (12) are all located on the top of the housing (1), and the outer diameter of the first wheel (10) is smaller than the outer diameter of the second wheel (11).

4. A low-loss transformer according to claim 1, characterized in that, A connecting seat (18) is fixedly connected to the side of the cooling fan (2), and a support shaft (19) is fixedly connected to the lower end of the connecting seat (18). The support shaft (19) is rotatably connected to the outer shell (1), and a connecting shaft (20) is fixedly connected to the upper end of the connecting seat (18).

5. A low-loss transformer according to claim 4, characterized in that, The housing (1) is provided with a second driving member (24), the output end of the second driving member (24) is connected to a drive shaft (23), the end of the drive shaft (23) is fixedly connected to a worm (22), the upper end of the connecting shaft (20) is fixedly connected to a worm wheel (21), and the worm wheel (21) and the worm (22) mesh with each other.

6. A low-loss transformer according to claim 1, characterized in that, The cooling fan (2) has swing rods (25) on both the upper and lower sides. The guide vane (26) is located between the two swing rods (25). The bottom of the swing rod (25) on the lower side of the cooling fan (2) is fixedly connected to a guide bolt (27). The guide bolt (27) is set in the vertical direction. A sliding groove (28) is provided on the bottom surface inside the outer shell (1). The lower end of the guide bolt (27) is located in the sliding groove (28), and the two are slidably connected.

7. A low-loss transformer according to claim 1, characterized in that, The outer casing (1) is provided with an exhaust port, and multiple guide plates (29) are rotatably connected inside the exhaust port.

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