Efficient heat dissipation oil-immersed transformer

Abstract

The invention relates to the technical field of transformers, and provides an efficient heat dissipation oil-immersed transformer which comprises a transformer body and a plurality of heat dissipation plate sets arranged on the surface of the transformer body, each heat dissipation plate set comprises a first heat dissipation plate and a second heat dissipation plate, a first airflow channel is formed between the first heat dissipation plate and the transformer body, and a second airflow channel is formed between the second heat dissipation plate and the transformer body. The second heat dissipation plate and the first heat dissipation plate are arranged in a spaced mode and form a second airflow channel. A cleaning device is jointly arranged on the outer sides of all the heat dissipation plate sets, the cleaning device comprises a track plate, a sweeping mechanism and a driving mechanism, the sweeping mechanism comprises a sliding column arranged on the track plate in a sliding mode and a plurality of dismounting and mounting plates detachably connected to the sliding column, and each dismounting and mounting plate is bonded with a dust removal adhesive tape; the dust removal adhesive tape is tightly attached to the opposite side faces of the two adjacent heat dissipation plate sets in an abutting mode. On the basis, the heat dissipation plate set on the surface of the transformer can be automatically cleaned, and the good heat dissipation effect of the transformer can be kept.

Description

Technical Field

[0001] This application relates to the field of transformer technology, and in particular to an oil-immersed transformer with high-efficiency heat dissipation. Background Technology

[0002] An oil-immersed transformer is a type of transformer that uses insulating oil (usually mineral oil or silicone oil) as both the insulating and cooling medium. Its operating principle is based on electromagnetic induction, achieving voltage transformation through the interaction between the core and windings. The insulating oil not only isolates the coils and core, preventing current leakage and short circuits, but also acts as a cooling medium, transferring heat generated inside the transformer to the external environment to maintain a stable transformer temperature.

[0003] Existing oil-immersed transformers typically rely on heat exchange between the transformer's surface heat sink and the outside air to dissipate heat. The heat sink increases the heat dissipation area of ​​the transformer casing, thereby improving the heat dissipation rate. However, in environments with a lot of wind and sand, such as construction sites or high-altitude areas, dust easily adheres to the surface of the heat sink during transformer use, thus hindering heat exchange between the heat sink and the outside air and reducing the heat dissipation effect. This necessitates frequent cleaning or rinsing of the transformer surface by staff, which needs to be improved. Summary of the Invention

[0004] Based on this, this application provides an oil-immersed transformer with high-efficiency heat dissipation, which can automatically clean the heat dissipation plate assembly on the transformer surface, thus helping to maintain good heat dissipation performance of the transformer.

[0005] The oil-immersed transformer with high-efficiency heat dissipation provided in this application adopts the following technical solution: An oil-immersed transformer with high-efficiency heat dissipation includes a transformer body and multiple sets of heat dissipation plates disposed on the surface of the transformer body, wherein each pair of adjacent heat dissipation plates are equidistantly arranged and form a heat dissipation space. Each heat sink assembly includes a first heat sink and a second heat sink. The first heat sink is fixed to the transformer body and forms a first airflow channel between the first heat sink and the transformer body. The second heat sink is fixed to the transformer body and is located outside the first heat sink. The second heat sink and the first heat sink are spaced apart to form a second airflow channel. All heat sink assemblies are equipped with a common cleaning device on their outer sides. The cleaning device includes a track plate fixed to the transformer body, two sets of cleaning mechanisms slidably set on the track plate, and a drive mechanism for driving the two sets of cleaning mechanisms to move synchronously. The two sets of cleaning mechanisms are respectively abutted against the opposite sides of the first heat sink and the second heat sink. The cleaning mechanism includes a sliding column slidably mounted on the track plate and multiple detachable plates detachably connected to the sliding column. Each detachable plate is respectively set in each heat dissipation space. Each detachable plate is glued with a dust removal strip, which is tightly attached to the opposite sides of two adjacent heat dissipation plate groups.

[0006] By adopting the above technical solution, the first airflow channel formed between the first heat sink and the transformer body, and the second airflow channel formed between the second heat sink and the first heat sink, facilitate the flow of external air and carry away heat smoothly, achieving a good heat dissipation effect. After the transformer has been used for a period of time and dust gradually accumulates on the surface of the heat sink assembly, the drive mechanism is controlled to move the two sets of cleaning mechanisms synchronously. At this time, the two sets of cleaning mechanisms can respectively abut against the opposite sides of the first heat sink and the second heat sink and move to wipe away the dust attached to the opposite sides of the first heat sink and the second heat sink. At the same time, each disassembly and assembly plate can move with the sliding column within its heat dissipation space. The dust removal strips can wipe the surfaces of the two sets of heat sink assemblies on adjacent sides, thereby achieving an automatic dust cleaning effect. This ensures good heat exchange efficiency between the heat sink assembly and the external air, allowing the transformer to maintain a good heat dissipation effect at all times.

[0007] Optionally, the outer periphery of the sliding column is provided with multiple fixing components and multiple rotating components, and each fixing component and each rotating component are arranged alternately along the axial direction of the sliding column; wherein, each fixing component has a dust removal pad glued to its side, and the dust removal pad can normally stick to the first heat dissipation plate or the second heat dissipation plate. The detachable plate is detachably connected to the rotating assembly. The rotating assembly has a fixed pin on its side. The fixed assembly has an arc-shaped guide groove for the fixed pin to be inserted. The arc axis of the arc-shaped guide groove coincides with the central axis of the sliding column. A repulsion component is provided between the fixed pin and the arc-shaped guide groove. The repulsion component is used to force two dust removal strips in the same heat dissipation space to abut against each other.

[0008] By adopting the above technical solution, the fixing kit can be used to adhere the dust removal pad. By making the dust removal pad abut against the first heat sink / second heat sink, dust on the surface of the first heat sink or the second heat sink can be easily cleaned when the sliding column moves. The rotating kit is used to fix the disassembly plate and the dust removal strip. The two disassembly plates located in the same heat dissipation space can approach each other under the action of the repulsion component, so that the two dust removal strips keep abutting against each other. After the cleaning device has been used for a period of time and dust has accumulated on the surface of the dust removal strip, the disassembly plate can be rotated to be exposed in the heat dissipation space by forcing the rotating kit to rotate. At this time, the dust removal strip can be cleaned easily, and the entire disassembly plate can be replaced easily. The operation is convenient and easy to use.

[0009] Optionally, the repulsion assembly includes a first magnet embedded in the fixed post and a second magnet embedded in the side wall of the arc-shaped guide groove, wherein the first magnet and the second magnet repel each other with the same pole.

[0010] By adopting the above technical solution, by setting the magnetic poles of the first magnet and the second magnet to be the same, the first magnet and the second magnet can always have a repulsive force, so as to force the rotating kit to rotate normally to keep the two dust removal strips in a state of mutual contact; in addition, since the rotating kit and the fixed kit do not contact each other, while the driving mechanism drives the two sets of cleaning mechanisms to move synchronously, there may be a jumping situation between the two disassembly and assembly plates, which will create a striking effect between the two dust removal strips, which is conducive to knocking off the dust attached to the dust removal strips, so that the dust removal strips can maintain the dust removal function for a longer period of time.

[0011] Optionally, the rotating kit has a through-hole, and the disassembly plate is fixedly connected with a plug post, which is inserted into the plug hole. The end of the plug post away from the disassembly plate is provided with multiple elastic springs. Each elastic spring is equidistant from the central axis of the plug post, and each elastic spring is normally bent in a direction away from the central axis of the plug post.

[0012] By adopting the above technical solution, during the installation of disassembly and assembly panels, the plug-in pins are directly inserted into the plug-in holes. When the elastic springs at the ends of the plug-in pins are subjected to force, they can deform inward together to facilitate the smooth insertion of the plug-in pins. After each elastic spring passes through the plug-in hole, each elastic spring naturally resets and unfolds outward. At this time, the elastic springs can play a certain obstruction role, reducing the occurrence of the plug-in pins directly detaching from the plug-in hole, which is conducive to the rapid disassembly and replacement of subsequent disassembly and assembly panels.

[0013] Optionally, a telescopic rod assembly is provided between the two sets of cleaning mechanisms. The telescopic rod assembly includes a movable rod, a movable sleeve, and a return spring. The movable rod and the movable sleeve are respectively fixed to two sliding columns, and the movable rod and the movable sleeve are movably connected. The return spring is set between the movable rod and the movable sleeve to force the two sliding columns to move closer to each other under normal conditions, so that the two sets of cleaning mechanisms abut against the opposite sides of the first heat dissipation plate and the second heat dissipation plate, respectively.

[0014] By adopting the above technical solution, the movable rod and the movable sleeve are respectively fixed to the two sliding columns, and the movable rod and the movable sleeve are movably connected, which can restrict the rotation of the two sliding columns and keep the two sets of cleaning mechanisms facing each other. The setting of the return spring can always force the two sliding columns to move closer to each other, so that the dust removal rubber pads of the two sliding columns abut against the opposite sides of the first heat dissipation plate and the second heat dissipation plate, so as to smoothly wipe away the attached dust when the sliding columns move.

[0015] Optionally, the drive mechanism includes a planetary carrier, a central gear, planetary gears, and a drive motor. The drive motor is fixed to the transformer body, and the central gear is coaxially fixed to the output end of the drive motor. The planetary carrier is fixed to the transformer body, and a partially integrally formed internal gear ring is provided on the inner side of the planetary carrier. The planetary gear meshes between the internal gear ring and the central gear. The planetary gear is rotatably connected to a deflection plate. A connecting plate is provided between the deflection plate, the central gear, and the planetary gear to realize the deflection motion of the deflection plate around the central axis of the central gear. Two clamping posts are provided on the side of the deflection plate away from the center wheel. The two clamping posts are spaced apart and form a clamping space. The sliding post is matched and passes through the clamping space and is always located inside the clamping space.

[0016] By adopting the above technical solution, after the transformer has been used for a period of time and dust gradually accumulates on the surface of the heat sink assembly, the drive motor is controlled to rotate the central wheel. Since the central wheel and the fixed frame remain in their original positions, the planetary gear meshed between the central wheel and the internal gear ring can revolve around the central axis of the central wheel, thereby causing the deflection plate to deflect around the central axis of the central wheel. During the rotation of the deflection plate, it can smoothly rotate the two sliding columns through the clamping space, thereby realizing the automatic cleaning operation of the heat sink assembly by the cleaning mechanism to ensure that the heat sink assembly has a good heat dissipation effect.

[0017] Optionally, two limiting posts are fixed to the side of the planetary carrier. The limiting posts can be used to abut and limit the connecting plate to restrict the rotation range of the deflection plate.

[0018] By adopting the above technical solution and setting a limiting post, when the drive motor runs and drives the connecting plate to rotate to the position of abutting against the limiting post, the rotation range of the deflection plate can be limited, reducing the possibility of interference or collision between the cleaning mechanism and other components.

[0019] Optionally, the transformer body surface is provided with multiple heat dissipation areas, and each heat dissipation area is provided with multiple sets of heat dissipation plates; a heat dissipation fan is provided on the inner side of all the heat dissipation plates in a heat dissipation area, the heat dissipation fan is fixedly mounted on the surface of the transformer body, and the heat dissipation fan is directly facing the heat dissipation space between each adjacent heat dissipation plate set.

[0020] By adopting the above-mentioned technical solution, the arrangement of multiple heat dissipation areas can enhance the heat dissipation effect of the oil-immersed transformer. This application further improves the heat dissipation effect by installing a heat dissipation fan in each heat dissipation area, with the fan constantly blowing positive pressure air towards the heat dissipation space. This accelerates the airflow velocity in the first and second airflow channels. Furthermore, since the heat dissipation fan constantly blows positive pressure air into the heat dissipation space, the airflow can remove dust adhering to the sides of the heat dissipation plate assembly, which also helps maintain good heat exchange efficiency between the heat dissipation plate assembly and the external air.

[0021] Optionally, the oil-immersed transformer also includes a water-cooling mechanism for rapidly reducing the temperature of the heat sink assembly. The water-cooling mechanism includes a first cooling pipe, a second cooling pipe, and a circulating water tank. The first cooling pipe passes through each of the first heat sinks, and the second cooling pipe passes through each of the second heat sinks. The inlet and outlet of the first cooling pipe and the inlet and outlet of the second cooling pipe are both connected to the circulating water tank.

[0022] By adopting the above technical solution, in the event of an emergency cooling situation, water is circulated to the first and second cooling pipes through a circulating water tank. When the water flows through each of the first and second heat dissipation plates, it can quickly remove heat energy through heat exchange, thereby achieving a rapid cooling effect.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a drive mechanism to drive two sets of cleaning mechanisms to move synchronously, the dust removal pads of the two sets of cleaning mechanisms can respectively abut against the opposite sides of the first heat sink and the second heat sink and move to wipe away the dust attached to the opposite sides of the first heat sink and the second heat sink; at the same time, each disassembled plate can move within its heat dissipation space, and the dust removal strips can wipe the surface of the two sets of heat sinks on the adjacent sides, thereby achieving the effect of automatic dust cleaning, ensuring that the heat sinks maintain good heat exchange efficiency with the outside air, so that the transformer always maintains good heat dissipation effect; 2. By setting a rotating kit for detachable connection of disassembly and assembly panels, the dust removal strip can be easily cleaned after a period of use and when dust accumulates on its surface. It can also be easily replaced by the entire disassembly and assembly panel, making it convenient to operate and use. 3. By setting up a repulsion component to force the two dust removal pads to remain in contact naturally under normal conditions, since the rotating kit and the fixed kit do not contact each other, there may be a jumping situation between the two disassembly and assembly plates when the two sets of cleaning mechanisms move, which will create a slapping effect between the two dust removal strips, which is conducive to knocking off the dust attached to the dust removal strips, so that the dust removal strips can maintain the dust removal effect for a longer period of time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the heat sink assembly and water cooling mechanism in this embodiment; Figure 3 This is a schematic diagram of the structure of one of the heat dissipation areas in this embodiment; Figure 4 This is a schematic diagram of the cleaning device in this embodiment; Figure 5 yesFigure 4 Enlarged view of point A in the middle; Figure 6 This is a partial structural diagram of the cleaning mechanism in this embodiment; Figure 7 This is a structural schematic diagram of the disassembly and assembly of the panels in this embodiment; Figure 8 This is a schematic diagram of the mating structure of the fixed assembly and the rotating assembly in this embodiment; Figure 9 yes Figure 4 Enlarged view of point B in the middle.

[0025] Explanation of reference numerals in the attached drawings: 1. Transformer body; 11. Heat dissipation area; 12. Heat dissipation fan; 2. Heat dissipation plate assembly; 21. Heat dissipation space; 22. First heat dissipation plate; 221. First airflow channel; 23. Second heat dissipation plate; 231. Second airflow channel; 3. Water cooling mechanism; 31. First cooling pipe; 32. Second cooling pipe; 33. Circulating water tank; 4. Cleaning device; 5. Track plate; 51. Track groove; 6. Cleaning mechanism; 61. Sliding column; 611. Through-joint part; 62. Disassembly / assembly plate; 621. Bending part; 622. Insertion post; 623. Elastic spring; 624. Dust removal. 63. Adhesive strip; 64. Fixing kit; 65. Dust removal pad; 66. Arc-shaped guide groove; 67. Rotating kit; 68. Extension; 69. Insertion hole; 60. Fixing post; 61. Repulsion assembly; 62. First magnet; 63. Second magnet; 7. Drive mechanism; 74. Planetary carrier; 75. Internal gear ring; 76. Limiting post; 77. Center wheel; 78. Planetary gear; 79. Drive motor; 70. Deflection plate; 71. Clamping post; 72. Clamping space; 73. Connecting plate; 84. Telescopic rod assembly; 85. Movable rod; 86. Movable sleeve; 87. Return spring. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail.

[0027] This application discloses an oil-immersed transformer with high-efficiency heat dissipation.

[0028] Reference Figure 1 An efficient heat dissipation oil-immersed transformer includes a transformer body 1, which is a box structure with heat dissipation areas 11 on its four sides. Each heat dissipation area 11 is provided with multiple heat dissipation plate groups 2, which are arranged at equal intervals in the horizontal direction, so that a heat dissipation space 21 is formed between adjacent heat dissipation plate groups 2 for heat dissipation.

[0029] Reference Figure 2Each heat sink assembly 2 includes a first heat sink 22 and a second heat sink 23. In this embodiment, the first heat sink 22 and the second heat sink 23 are both C-shaped. The first heat sink 22 is fixed to the surface of the transformer body 1, and a first airflow channel 221 is formed between the first heat sink 22 and the transformer body 1. The second heat sink 23 is larger than the first heat sink 22. The second heat sink 23 is fixed to the transformer body 1 and located outside the first heat sink 22, so that a second airflow channel 231 is formed between the second heat sink 23 and the first heat sink 22.

[0030] A cooling fan 12 is provided on the inner side of all the heat dissipation plate groups 2 located in a heat dissipation area 11. The cooling fan 12 is fixedly mounted on the surface of the transformer body 1 and faces the heat dissipation space 21 between each adjacent heat dissipation plate group 2. Based on this, when the cooling fan 12 is operating, it can continuously blow positive pressure air into each heat dissipation space 21, and the external air can be supplemented to the inner side of each heat dissipation plate group 2 through the first airflow channel 221, thereby accelerating the airflow speed between each heat dissipation plate group 2 and improving the heat dissipation effect. At the same time, the positive pressure air blown by the cooling fan 12 can also reduce the occurrence of dust adhering to the side of the heat dissipation plate group 2.

[0031] The oil-immersed transformer also includes a water-cooling mechanism 3, which includes a first cooling pipe 31, a second cooling pipe 32, and a circulating water tank 33. The first cooling pipe 31 passes through the middle of each first heat dissipation plate 22, and the second cooling pipe 32 passes through the middle of each second heat dissipation plate 23. The circulating water tank 33 is fixed to the bottom base of the transformer body 1. The circulating water tank 33 is divided into a cold water zone and a hot water zone. A cooling system (not shown in the figure) for cooling is provided between the cold water zone and the hot water zone.

[0032] It should be noted that in this embodiment, the inlet end of the first cooling pipe 31 and the inlet end of the second cooling pipe 32 are both connected to the cold water zone of the circulating water tank 33, and the outlet end of the first cooling pipe 31 and the outlet end of the second cooling pipe 32 are both connected to the hot water zone of the circulating water tank 33. When the internal temperature of the transformer body 1 is too high and emergency cooling is required, cold water enters the first cooling pipe 31 and the second cooling pipe 32 and flows through each of the first heat dissipation plates 22 and each of the second heat dissipation plates 23 in sequence, which can quickly remove the temperature of the heat dissipation plate group 2 and play a role in rapid cooling.

[0033] Reference Figure 3 A cleaning device 4 is provided on the outer side of all heat dissipation plate assemblies 2 located in a heat dissipation area 11. In this embodiment, there are two sets of cleaning devices 4 in a heat dissipation area 11. The two sets of cleaning devices 4 are symmetrically arranged on the upper and lower sides of the heat dissipation plate assembly 2, and can work together to clean the entire heat dissipation plate assembly 2. The following description uses one set of cleaning devices 4 as an example.

[0034] Simultaneously refer to Figure 4 Specifically, the cleaning device 4 includes track plates 5, a cleaning mechanism 6, and a drive mechanism 7. Each set of cleaning devices 4 has four track plates 5, divided into two groups. Two track plates 5 in one group are positioned on opposite sides of each of the first heat dissipation plates 22, and two track plates 5 in the other group are positioned on opposite sides of each of the second heat dissipation plates 23. Each track plate 5 has a track groove 51, the extension direction of which is the same as the extension direction of the corresponding first heat dissipation plate 22 or the extension direction of the corresponding second heat dissipation plate 23. Furthermore, in this embodiment, adjacent track plates 5 of the two sets of cleaning devices 4 are integrally formed.

[0035] There are two sets of cleaning mechanisms 6, which are slidably mounted on two sets of track plates 5, and can respectively abut against the opposite sides of the first heat sink 22 and the second heat sink 23. See details. Figure 5 The cleaning mechanism 6 includes a sliding column 61 and a disassembly plate 62. The outer diameter of the sliding column 61 is equal to the width of the track groove 51. The sliding column 61 can match the track groove 51 that passes through the two track plates 5 and move freely within the track groove 51.

[0036] Reference Figure 6 Multiple fixing kits 63 are fixedly sleeved on the outer periphery of the sliding column 61. All fixing kits 63 are equidistantly arranged along the axial direction of the sliding column 61, and each fixing kit 63 is respectively set to correspond to each heat sink group 2. A dust removal pad 631 is glued and fixed on one side of the fixing kit 63. The dust removal pad 631 of one cleaning mechanism 6 can abut against the side of the first heat sink 22 away from the second heat sink 23, and the dust removal pad 631 of the other cleaning mechanism 6 can abut against the side of the second heat sink 23 away from the first heat sink 22.

[0037] A telescopic rod assembly 8 is provided between the two sets of cleaning mechanisms 6. In this embodiment, the telescopic rod assembly 8 includes a movable rod 81, a movable sleeve 82, and a return spring 83. The movable rod 81 and the movable sleeve 82 are respectively fixedly connected to two sliding columns 61, and the movable rod 81 is movably inserted into the movable sleeve 82. The return spring 83 is disposed between the movable rod 81 and the movable sleeve 82. The return spring 83 can always generate an elastic force acting on the movable rod 81, thereby forcing the movable rod 81 to move towards the movable sleeve 82, so that the two sliding columns 61 are normally close to each other. Based on this, under the action of the telescopic rod assembly 8, the two sliding columns 61 can make the dust removal pad 631 normally abut against the opposite sides of the first heat dissipation plate 22 and the second heat dissipation plate 23.

[0038] Reference Figure 6Multiple rotating components 64 are rotatably sleeved on the outer periphery of the sliding column 61. Each rotating component 64 and each fixed component 63 can be alternately arranged along the axial direction of the sliding column 61. The number of detachable and detachable plates 62 is equal to the number of rotating components 64. Each detachable and detachable plate 62 can be detachably connected to each rotating component 64, and each detachable and detachable plate 62 is respectively set in each heat dissipation space 21.

[0039] The connection method between the detachable plate 62 and the rotating assembly 64 is as follows: the outer peripheral surface of the rotating assembly 64 is provided with an integrally formed extension 641, and the outer peripheral surface of the rotating assembly 64 is provided with a insertion hole 642 that passes through the extension 641; at the same time, refer to Figure 7 The disassembly plate 62 is provided with a curved part 621 that matches and fits with the rotating assembly 64. The inner arc surface of the curved part 621 is fixed with a plug post 622. The outer diameter of the plug post 622 is equal to the inner diameter of the plug hole 642, so that the plug post 622 can be matched and inserted into the plug hole 642.

[0040] Furthermore, the end of the plug-in post 622 away from the disassembly plate 62 is provided with multiple elastic springs 623. Each elastic spring 623 is equidistantly arranged around the central axis of the plug-in post 622. The two ends of each elastic spring 623 are fixedly connected to the plug-in post 622, while the middle section of each elastic spring 623 can be normally bent away from the central axis of the plug-in post 622. Based on this, when the plug-in post 622 is inserted into the plug-in hole 642, each elastic spring 623 can be forced to retract inward to facilitate the smooth insertion of the plug-in post 622. After each elastic spring 623 passes through the plug-in hole 642, each elastic spring 623 naturally returns to its original position and unfolds outward, abutting against the side of the extension 641, creating a certain obstruction and reducing the occurrence of the disassembly plate 62 directly detaching from the rotating assembly 64, thus facilitating the quick installation and removal of the disassembly plate 62.

[0041] Reference Figure 6 , Figure 8 The fixed assembly 63 has an arc-shaped guide groove 632 on its side, and the arc axis of the arc-shaped guide groove 632 coincides with the central axis of the sliding column 61. The rotating assembly 64 has an integrally formed fixed insertion post 643 on its side. The fixed insertion post 643 is matched and inserted into the arc-shaped guide groove 632 and can move along the arc path of the arc-shaped guide groove 632 to realize the rotation and limiting of the rotating assembly 64 relative to the fixed assembly 63. A repulsion component 65 is also provided between the fixed insertion post 643 and the arc-shaped guide groove 632. In this embodiment, the repulsion component 65 includes a first magnet 651 embedded in the fixed insertion post 643 and a second magnet 652 embedded in the side wall of the arc-shaped guide groove 632. The first magnet 651 and the second magnet 652 have the same magnetic poles and can always have a repulsive force that forces the first magnet 651 and the second magnet 652 away from each other.

[0042] Back Figure 3 , Figure 6 In this embodiment, each detachable plate 62 is attached with a dust removal adhesive strip 624. The two detachable plates 62, which are respectively located on the two sliding columns 61, can rotate into the heat dissipation space 21 under the repulsive force of the corresponding repulsion component 65, and keep the two dust removal adhesive strips 624 in contact with each other. At this time, the dust removal adhesive strips 624 can be tightly attached to the opposite sides of the two adjacent heat dissipation plate groups 2, so that when the sliding column 61 moves along the track groove 51, the dust removal adhesive strips 624 can wipe the sides of the heat dissipation plate group 2 to achieve a cleaning effect.

[0043] Back Figure 4 The drive mechanism 7 is configured to drive the two sets of cleaning mechanisms 6 to move synchronously; see details below. Figure 9 The drive mechanism 7 includes a planetary carrier 71, a central gear 72, planetary gears 73, and a drive motor 74. The drive motor 74 is fixedly mounted on the surface of the transformer body 1, and the central gear 72 is coaxially fixed to the output end of the drive motor 74. The planetary carrier 71 is fixed to the surface of the transformer body 1, and a partially integrally formed internal gear ring 711 is provided on the inner side of the planetary carrier 71. The internal gear ring 711 and the central gear 72 are coaxial. It should be noted that in this embodiment, in the two sets of cleaning devices 4 located in the same heat dissipation area 11, the two planetary carriers 71 of the two sets of drive mechanisms 7 are integrally formed.

[0044] Planetary gear 73 is rotatably disposed between internal gear ring 711 and central gear 72, and simultaneously meshes with both internal gear ring 711 and central gear 72. A deflector plate 75 is rotatably connected to planetary gear 73. A connecting plate 76 is rotatably disposed between deflector plate 75, central gear 72, and planetary gear 73, and the extension direction of connecting plate 76 always coincides with the rotation axis of central gear 72. When drive motor 74 operates to drive central gear 72 to rotate, planetary gear 73 can rotate around its own central axis and simultaneously revolve around the central axis of central gear 72, thereby driving deflector plate 75 to deflect around the central axis of central gear 72.

[0045] Simultaneously refer to Figure 5 Two clamping posts 751 are fixed to the side of the deflector plate 75 away from the center wheel 72. The two clamping posts 751 are spaced apart and form a clamping space 752. In this embodiment, the deflector plate 75 is located outside the track plate 5. The end of the sliding post 61 is provided with an integrally formed through part 611. The through part 611 is matched and inserted into the clamping space 752 and is always located inside the clamping space 752. It should be noted that the through parts 611 of the two sliding posts 61 in a set of cleaning devices 4 can be inserted into the clamping space 752, so that when the deflector plate 75 rotates, it can drive the two sets of cleaning mechanisms 6 to move simultaneously.

[0046] In addition, two limiting posts 712 are fixed on the side of the planetary carrier 71, and the two limiting posts 712 are located at both ends of the internal gear ring 711 respectively. The limiting posts 712 are located on the moving path of the connecting plate 76, and can be used to abut and limit the connecting plate 76, so as to limit the rotation range of the deflection plate 75 and reduce the possibility of interference or collision between the cleaning mechanism 6 and other components.

[0047] The implementation principle of a high-efficiency heat dissipation oil-immersed transformer in this application embodiment is as follows: After the transformer has been used for a period of time and dust gradually accumulates on the surface of the heat sink assembly 2, the drive mechanism 7 is controlled to move the two cleaning mechanisms 6 synchronously. At this time, the dust removal pads 631 of the two cleaning mechanisms 6 can abut against the opposite sides of the first heat sink 22 and the second heat sink 23 respectively and move to wipe away the dust attached to the opposite sides of the first heat sink 22 and the second heat sink 23. At the same time, each disassembly plate 62 can move within the heat dissipation space 21 along with the sliding column 61. The dust removal strips 624 can wipe the surfaces of the two heat sink assemblies 2 on adjacent sides, thereby achieving the effect of automatic dust cleaning. This ensures good heat exchange efficiency between the heat sink assembly 2 and the outside air, so that the transformer always maintains good heat dissipation.

[0048] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency heat dissipation oil-immersed transformer, comprising a transformer body (1) and multiple sets of heat dissipation plate groups (2) disposed on the surface of the transformer body (1), wherein each pair of adjacent heat dissipation plate groups (2) are equidistantly arranged and form a heat dissipation space (21); characterized in that: Each heat sink assembly (2) includes a first heat sink (22) and a second heat sink (23). The first heat sink (22) is fixed to the transformer body (1) and forms a first airflow channel (221) between it and the transformer body (1). The second heat sink (23) is fixed to the transformer body (1) and is located outside the first heat sink (22). The second heat sink (23) and the first heat sink (22) are spaced apart to form a second airflow channel (231). All heat sink assemblies (2) are provided with a cleaning device (4) on their outer side. The cleaning device (4) includes a track plate (5) fixed to the transformer body (1), two sets of cleaning mechanisms (6) slidably disposed on the track plate (5), and a drive mechanism (7) for driving the two sets of cleaning mechanisms (6) to move synchronously. The two sets of cleaning mechanisms (6) are respectively abutted against the opposite sides of the first heat sink (22) and the second heat sink (23). The cleaning mechanism (6) includes a sliding column (61) slidably disposed on the track plate (5) and a plurality of disassembly plates (62) detachably connected to the sliding column (61). Each of the disassembly plates (62) is respectively disposed in each heat dissipation space (21). Each of the disassembly plates (62) is bonded with a dust removal strip (624), which is tightly abutted against the opposite sides of two adjacent heat dissipation plate groups (2).

2. The oil-immersed transformer according to claim 1, characterized in that: The outer periphery of the sliding column (61) is provided with a plurality of fixing kits (63) and a plurality of rotating kits (64), and each fixing kit (63) and each rotating kit (64) are arranged alternately along the axial direction of the sliding column (61); wherein, each fixing kit (63) has a dust removal pad (631) glued to its side, and the dust removal pad (631) can normally abut against the first heat sink (22) or the second heat sink (23); The detachable plate (62) is detachably connected to the rotating assembly (64). The rotating assembly (64) has a fixed insert (643) on its side. The fixed assembly (63) has an arc-shaped guide groove (632) for the fixed insert (643) to be inserted. The arc axis of the arc-shaped guide groove (632) coincides with the central axis of the sliding column (61). A repulsion component (65) is provided between the fixed insert (643) and the arc-shaped guide groove (632). The repulsion component (65) is used to force the two dust removal strips (624) in the same heat dissipation space (21) to abut against each other.

3. The oil-immersed transformer according to claim 2, characterized in that: The repulsion assembly (65) includes a first magnet (651) embedded in a fixed post (643) and a second magnet (652) embedded in the side wall of an arc-shaped guide groove (632), wherein the first magnet (651) and the second magnet (652) repel each other with the same pole.

4. The oil-immersed transformer according to claim 2, characterized in that: The rotating assembly (64) is provided with a through-hole (642), and the disassembly plate (62) is fixedly connected with a plug post (622). The plug post (622) is matched and inserted into the plug hole (642). The end of the plug post (622) away from the disassembly plate (62) is provided with a plurality of elastic springs (623). Each elastic spring (623) is equidistantly arranged around the central axis of the plug post (622), and each elastic spring (623) is normally bent in a direction away from the central axis of the plug post (622).

5. The oil-immersed transformer according to claim 1, characterized in that: A telescopic rod assembly (8) is provided between the two sets of cleaning mechanisms (6). The telescopic rod assembly (8) includes a movable rod (81), a movable sleeve (82), and a return spring (83). The movable rod (81) and the movable sleeve (82) are respectively fixed to two sliding columns (61), and the movable rod (81) and the movable sleeve (82) are movably connected. The return spring (83) is provided between the movable rod (81) and the movable sleeve (82) to force the two sliding columns (61) to move closer to each other in normal condition, so that the two sets of cleaning mechanisms (6) abut against the opposite sides of the first heat sink (22) and the second heat sink (23), respectively.

6. The oil-immersed transformer according to claim 1, characterized in that: The drive mechanism (7) includes a planetary carrier (71), a central gear (72), planetary gears (73), and a drive motor (74). The drive motor (74) is fixed to the transformer body (1), and the central gear (72) is coaxially fixed to the output end of the drive motor (74). The planetary carrier (71) is fixed to the transformer body (1), and a partially integrally formed internal gear ring (711) is provided on the inner side of the planetary carrier (71). The planetary gear (73) is meshed between the internal gear ring (711) and the central gear (72). The planetary gear (73) is rotatably connected to a deflection plate (75). A connecting plate (76) is provided between the deflection plate (75), the central gear (72), and the planetary gear (73) to realize the deflection movement of the deflection plate (75) around the central axis of the central gear (72). The deflection plate (75) is provided with two clamping posts (751) on the side away from the center wheel (72). The two clamping posts (751) are spaced apart and form a clamping space (752). The sliding post (61) is matched and passes through the clamping space (752) and is always located inside the clamping space (752).

7. The oil-immersed transformer according to claim 6, characterized in that: Two limiting posts (712) are fixed on the side of the planetary carrier (71). The limiting posts (712) can be used by the connecting plate (76) to abut and limit the rotation range of the deflection plate (75).

8. The oil-immersed transformer according to claim 1, characterized in that: The transformer body (1) has multiple heat dissipation areas (11) on its surface, and each heat dissipation area (11) is provided with multiple sets of heat dissipation plate groups (2). A heat dissipation fan (12) is provided inside all the heat dissipation plate groups (2) in a heat dissipation area (11). The heat dissipation fan (12) is fixedly mounted on the surface of the transformer body (1), and the heat dissipation fan (12) is directly facing the heat dissipation space (21) between each adjacent heat dissipation plate group (2).

9. The oil-immersed transformer according to claim 1, characterized in that: It also includes a water cooling mechanism (3) for rapidly reducing the temperature of the heat sink assembly (2). The water cooling mechanism (3) includes a first cooling pipe (31), a second cooling pipe (32) and a circulating water tank (33). The first cooling pipe (31) passes through each of the first heat sinks (22), and the second cooling pipe (32) passes through each of the second heat sinks (23). The inlet and outlet of the first cooling pipe (31) and the inlet and outlet of the second cooling pipe (32) are both connected to the circulating water tank (33).

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