Energy-saving oil-immersed transformer for high-salt-fog area

Abstract

The application relates to the technical field of transformers, and discloses an energy-saving oil-immersed transformer used in a high-salt-mist area, which comprises a transformer main body and a radiator arranged on the transformer main body; the radiator comprises a plurality of heat dissipation fins which are spaced apart in a horizontal direction; heat dissipation cavities are formed between adjacent heat dissipation fins; a connecting plate is detachably arranged on the radiator; a plurality of groups of cleaning pieces for cleaning dust in the heat dissipation cavities are arranged on one side of the connecting plate facing the heat dissipation fins; the number of the cleaning pieces is equal to that of the heat dissipation cavities and the cleaning pieces correspond to the heat dissipation cavities one by one; the cleaning piece comprises a mounting block rotatably arranged on the connecting plate and a cleaning brush detachably connected to the mounting block; the connecting plate is provided with a driving piece for driving the mounting block to rotate and drive the cleaning brush to rotate; and the cleaning brush can be brought into abutment with or separated from the cavity wall of the heat dissipation cavity under the action of the driving piece. The application has the effect of facilitating the cleaning of dust accumulated between adjacent heat dissipation fins.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, and particularly relates to an energy-saving oil-immersed transformer used in a high-salt-mist area. BACKGROUND

[0002] A transformer is one of important devices in a power supply and distribution system of industrial and mining enterprises and civil buildings, which can reduce 10 (6) kV or 35 kV network voltage to 230 / 400 V bus voltage used by users. According to different insulation cooling modes, the transformer can be divided into an oil-immersed transformer and a dry-type transformer, wherein the oil-immersed transformer is filled with transformer oil for realizing insulation and cooling functions, and has the characteristics of low loss, large capacity and low price.

[0003] The oil-immersed transformer in the related art generally comprises a transformer main body and a radiator arranged on the transformer main body, and the radiator comprises a plurality of spaced-apart radiating fins. When electrical elements in the transformer main body work and generate heat, the heat can be dissipated to the air through the radiating fins to achieve the purpose of cooling and heat dissipation.

[0004] Since the oil-immersed transformer is generally exposed to the outdoor environment during work, dust in the air is prone to accumulate on the radiating fins after long-term use, thereby affecting the heat dissipation effect of the radiator, and thus it is necessary for an operator to clean the dust on the radiating fins at irregular intervals.

[0005] However, the distance between adjacent radiating fins in the oil-immersed transformer on the market is generally small, and when cleaning the dust accumulated between adjacent radiating fins, the operator needs to hold a cloth or other tools to insert into the gap between adjacent radiating fins, which is inconvenient to operate and needs to be improved. SUMMARY

[0006] In order to facilitate cleaning of the dust accumulated between adjacent radiating fins, the present application provides an energy-saving oil-immersed transformer used in a high-salt-mist area.

[0007] The energy-saving oil-immersed transformer used in a high-salt-mist area provided by the present application adopts the following technical scheme:

[0008] The energy-saving oil-immersed transformer used in a high-salt-mist area comprises a transformer main body and a radiator arranged on the transformer main body, the radiator comprises a plurality of radiating fins which are spaced apart in a horizontal direction, a radiating cavity is formed between adjacent radiating fins, a connecting plate is detachably arranged on the radiator, a plurality of cleaning pieces for cleaning dust in the radiating cavity are arranged on one side of the connecting plate facing the radiating fins, and the number of the cleaning pieces is equal to and corresponds to the number of the radiating cavities; the cleaning piece comprises a mounting block rotatably arranged on the connecting plate and a cleaning brush detachably connected to the mounting block, a driving piece for driving the mounting block to rotate the cleaning brush is arranged on the connecting plate, and the cleaning brush can be brought into abutment with or separated from the cavity wall of the radiating cavity under the action of the driving piece.

[0009] By adopting the technical scheme, when the dust accumulated between the adjacent radiating fins is cleaned, the driving member drives the mounting block to rotate towards the side close to the transformer body until the cleaning brush abuts against the cavity wall of the radiating cavity, and then the operator can use the cleaning brush to clean the dust on the radiating fins, which is more convenient than the operation mode of inserting a tool such as a cloth into the radiating cavity. The oil-immersed transformer in the application is particularly suitable for use in a high-salt-mist area to clean the salt-containing droplets condensed on the radiating fins and the transformer body.

[0010] After the cleaning is completed, the driving member drives the mounting block to rotate towards the side away from the transformer body, so that the cleaning brush is separated from the cavity wall of the radiating cavity, and at this time, the mounting block and the cleaning brush do not block the opening of the radiating cavity, which is helpful to the circulation of air on both sides of the radiating cavity and good for the radiating effect.

[0011] In addition, since the cleaning brush is detachably arranged on the mounting block and the connecting plate is detachably arranged on the radiator, if the cleaning brush is damaged after long-term use, the operator can first remove the connecting plate from the radiator and then remove the cleaning brush from the mounting block, so as to replace the damaged cleaning brush alone, thereby reducing the replacement cost and saving energy and protecting the environment.

[0012] Optionally, the driving member comprises a driving motor arranged on the connecting plate, a driving gear fixedly connected with an output shaft of the driving motor, and a driven gear engaged on one side of the driving gear, and the mounting blocks in each group of cleaning members are rotationally connected with the connecting plate through the same rotating shaft, and the driven gear is fixedly connected with the rotating shaft.

[0013] By adopting the technical scheme, when the driving motor works, the driving gear rotates synchronously with the output shaft of the driving motor, and then the driven gear drives the rotating shaft to rotate, so as to realize the rotation of the mounting block and the cleaning brush. The groups of cleaning members in the application are driven by the same driving motor to realize synchronous action, which is simple in structure and good in transmission effect. In addition, during the cleaning process, due to the engagement relationship between the driving gear and the driven gear, the cleaning brush is not easy to rotate under the friction force between the cleaning brush and the cavity wall of the radiating cavity, which helps to ensure the working stability of the cleaning member.

[0014] Optionally, a receiving groove for accommodating the cleaning member is formed in the side wall of the connecting plate facing the radiating fin, and the rotating shaft is rotationally arranged on the groove wall of the receiving groove.

[0015] By adopting the technical scheme, when the cleaning member is not used, the cleaning member can be rotated into the receiving groove, so as to reduce the occupied space of the cleaning member and improve the space utilization.

[0016] Optionally, the cleaning brush comprises a first brush for cleaning dust on the heat dissipation fins and a second brush for cleaning dust on the transformer body, the second brush is located at the end of the mounting block away from the rotating shaft, and the first brush and the second brush are respectively attached to the mounting block by a group of magic tapes.

[0017] By adopting the above technical scheme, when the cleaning brush is in the working state, the first brush abuts against the heat dissipation fins to clean dust on the heat dissipation fins, and the second brush abuts against the transformer body to clean dust on the transformer body, so that the cleaning brush has a large range of action and good dust cleaning effect. In addition, the first brush and the second brush are attached to the mounting block by magic tapes, so that the cleaning brush can be disassembled without the aid of other auxiliary tools, and the operation is simple.

[0018] Optionally, the mounting block comprises a mounting portion fixedly connected with the rotating shaft and extension portions slidingly arranged on both sides of the mounting portion, a dovetail block is fixedly arranged on the side of each extension portion facing the mounting portion, and dovetail grooves slidingly matched with the dovetail blocks are respectively arranged on the opposite side end faces of the mounting portion, an installation opening for allowing the dovetail blocks to move in or out is arranged on the side of each dovetail groove away from the rotating shaft, and the second brush can block the installation opening.

[0019] By adopting the above technical scheme, when the cleaning member is assembled, the dovetail blocks on the extension portions are sequentially moved into the dovetail grooves along the installation openings to assemble the mounting block, the first brush is attached to the extension portions by magic tapes, and then the second brush is attached to the side of the mounting portion away from the rotating shaft, so that the second brush can hinder the dovetail blocks from being detached from the dovetail grooves, and the cleaning member has a simple structure and is convenient to disassemble and assemble. The mounting portion comprises a mounting portion and extension portions which are detachably connected, and in actual use, an operator can assemble extension portions with different thicknesses on the mounting portion according to requirements, so that the transformer with heat dissipation fins with different intervals can be adapted, and the practicality is high.

[0020] Optionally, the first brush and the second brush each comprise a base sheet made of flexible material and a plurality of bristles fixed to the side of the base sheet away from the mounting block.

[0021] By adopting the above technical scheme, since the base sheet is made of flexible material, the base sheet can be correspondingly deformed flexibly when the first brush and the second brush are disassembled and assembled, and the disassembly and replacement of the first brush and the second brush will not be affected.

[0022] Optionally, a positioning block is fixed to the side of the heat dissipation fins away from the transformer body, a vertical positioning groove is arranged in the side wall of the connecting plate close to the heat dissipation fins, the top end of the positioning groove is closed, the bottom end of the positioning groove is provided with an opening for allowing the positioning block to vertically extend into, the widths of the positioning block and the positioning groove gradually decrease along the direction from the heat dissipation fins to the transformer body, and a stopper for preventing the positioning block from moving out of the positioning groove is arranged on the bottom of the connecting plate.

[0023] By adopting the technical scheme, when the connecting plate is installed, the connecting plate is moved in the direction from top to bottom, so that the positioning blocks on each heat dissipation fin extend into the adjacent positioning slots respectively until the positioning blocks abut against the top walls of the positioning slots, and then the stopper blocks are used to prevent the positioning blocks from moving downward relative to the positioning slots, so that the relative fixation of the connecting plate and the heat dissipation fins is realized.

[0024] Optionally, the stopper block includes a fixing block fixed on the lower side of the connecting plate, a stopper screw threadedly connected to the fixing block, and a stopper block rotationally arranged on the side of the stopper screw facing the heat dissipation fins, and the stopper block is horizontally slidably arranged on the connecting plate.

[0025] By adopting the technical scheme, after the connecting plate is installed in place, the stopper screw is rotated toward the side close to the heat dissipation fins, so that the stopper block moves toward the side close to the heat dissipation fins. When the stopper block moves to the position directly below the positioning slot, the positioning block is prevented from moving downward by the stopper block, so that the relative fixation of the heat dissipation fins and the connecting plate is realized, and the stability of the connecting plate is high.

[0026] Optionally, one side of the stopper screw is fixed with a hand wheel, the other side is fixed with a rotating block, a rotating groove is formed in the stopper block and rotationally matched with the rotating block, a giving hole is formed in the groove wall of the rotating groove and rotationally matched with the stopper screw, and the inner diameter of the giving hole is smaller than the diameter of the rotating block.

[0027] By adopting the technical scheme, when the stopper screw is rotated, the rotating block is synchronously rotated in the rotating groove, and then drives the stopper block to move toward or away from the side close to the heat dissipation fins, so that the stopper block moves into or out of the position directly below the positioning slot, to realize the locking or unlocking of the connecting plate, and the structure is simple. The hand wheel is arranged on one side of the stopper screw, which has the effect of facilitating the operator to rotate the stopper screw.

[0028] Optionally, a plurality of air holes are formed in the heat dissipation fins and the connecting plate, and the air holes are in communication with the adjacent heat dissipation cavities.

[0029] By adopting the technical scheme, the air holes are helpful to the air flow between the two sides of the heat dissipation cavities, so as to further improve the heat dissipation effect of the heat dissipation device.

[0030] In summary, the present application has at least one of the following beneficial technical effects:

[0031] 1. When the dust between the adjacent heat dissipation fins is cleaned, the driving member is used to drive the mounting block to rotate, so that the cleaning brush is rotated to abut against the cavity wall of the heat dissipation cavity, so that the dust in the heat dissipation cavity can be cleaned by the cleaning brush, which is more convenient and faster than the way of extending the hand-held cloth into the heat dissipation cavity.

[0032] 2. The first brush and the second brush are adhered to the mounting block by the magic tape, and have the effect of convenient disassembly and assembly; the mounting block comprises a mounting part and an extension part which are detachably connected, in actual use, the operator can assemble the extension part with different thickness on the mounting part, so that the cleaning member can be suitable for the transformer with different distances between adjacent radiating fins, and the practicality is high.

[0033] 3. When the connecting plate is assembled to the radiator, the positioning block is located in the positioning groove, and the stop block is located directly below the positioning groove, so that the positioning block is not easy to move out of the positioning groove, and the connection stability of the connecting plate and the radiating fins is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic diagram of the embodiment of the application.

[0035] Figure 2 is a local explosion schematic diagram of the embodiment of the application.

[0036] Figure 3 is a local sectional view of the embodiment of the application.

[0037] Figure 4 is a structural schematic diagram of the connecting plate, the cleaning member and the driving member in the embodiment of the application.

[0038] Figure 5 is an explosion schematic diagram of the cleaning member in the embodiment of the application.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 1, transformer body; 2, radiator; 21, radiating fin; 22, positioning block; 3, radiating cavity; 4, air hole; 5, connecting plate; 51, positioning groove; 52, rotating shaft; 53, storage groove; 6, stop piece; 61, fixed block; 62, stop screw; 63, stop block; 631, rotating groove; 632, accommodation hole; 64, hand wheel; 65, rotating block; 7, cleaning member; 71, mounting block; 711, mounting part; 712, extension part; 713, dovetail block; 714, dovetail groove; 72, cleaning brush; 721, first brush; 722, second brush; 723, base sheet; 724, brush hair; 8, magic tape; 81, hook piece; 82, hair piece; 9, driving member; 91, driving motor; 92, driving gear; 93, driven gear. DETAILED DESCRIPTION

[0041] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The application will be further described in detail.

[0042] The embodiment of the application discloses an energy-saving oil-immersed transformer used in a high-salt-mist area.

[0043] Reference Figure 1 , Figure 2, the energy-saving oil-immersed transformer used in high-salt-mist area comprises a transformer main body 1 and a plurality of groups of radiators 2 arranged on the transformer main body 1, the radiators 2 in the embodiment are arranged in four groups and are arranged on different side walls of the transformer main body 1, each group of radiators 2 comprises a plurality of heat dissipation fins 21 arranged in a spaced manner in a horizontal direction, a heat dissipation cavity 3 is formed between adjacent heat dissipation fins 21 in the same group of radiators 2 and the transformer main body 1, and a plurality of air holes 4 are formed in the heat dissipation fins 21 and are in communication with the heat dissipation cavities 3. When the electrical elements in the transformer main body 1 work, the heat generated by the electrical elements can be dissipated to the air through the heat dissipation fins 21, so that the purpose of cooling and heat dissipation is achieved.

[0044] With reference to Figure 2 , each group of radiators 2 is detachably provided with a connecting plate 5 away from the transformer main body 1, the heat dissipation fins 21 are fixed with positioning blocks 22 away from the transformer main body 1, a plurality of positioning grooves 51 are formed in the side wall of the connecting plate 5 close to the heat dissipation fins 21, the number of the positioning grooves 51 on the connecting plate 5 is equal to and corresponds to the number of the heat dissipation fins 21 in the adjacent radiators 2, the distance between two adjacent positioning grooves 51 is equal to the distance between two adjacent positioning blocks 22 on the heat dissipation fins 21, and the top end of the positioning groove 51 is closed, and the bottom end is provided with an opening for the positioning block 22 to vertically extend into, so as to realize the sliding connection between the connecting plate 5 and the heat dissipation fins 21.

[0045] With reference to Figure 2 , in order to prevent the connecting plate 5 from moving away from the heat dissipation fins 21 after being assembled in place, the cross sections of the positioning blocks 22 and the positioning grooves 51 are trapezoidal in the embodiment, and the widths of the positioning blocks 22 and the positioning grooves 51 gradually decrease in the direction from the heat dissipation fins 21 to the transformer main body 1. In other embodiments, the cross sections of the positioning blocks 22 and the positioning grooves 51 can also be T-shaped or other shapes, as long as they can limit the relative movement of the positioning blocks 22 and the connecting plate 5 in the horizontal direction.

[0046] With reference to Figure 2 , Figure 3 , in order to improve the stability of the connecting plate 5 after being assembled in place, a stopper 6 is arranged at the bottom of the connecting plate 5 to prevent the positioning block 22 from being pulled out of the positioning groove 51. The stopper 6 comprises a fixed block 61 fixed to the lower side of the connecting plate 5, a stop screw 62 threadedly connected to the fixed block 61, and a stop block 63 rotatably arranged on the side of the stop screw 62 facing the heat dissipation fins 21, the length direction of the stop screw 62 is parallel to the direction from the connecting plate 5 to the heat dissipation fins 21, and the stop block 63 is in the shape of a long strip and is horizontally slidably arranged on the lower side of the connecting plate 5. In order to prevent the stop block 63 from rotating with the stop screw 62, the top end of the stop block 63 is in close contact with the bottom end of the connecting plate 5 in the embodiment.

[0047] With reference to Figure 3The one side of the stop screw 62 is fixed with a hand wheel 64, and the other side is fixed with a rotating block 65. The rotating block 65 is located at the side of the hand wheel 64 close to the cooling fin 21. The interior of the stop block 63 is provided with a rotating groove 631. The longitudinal section of the rotating groove 631 and the rotating block 65 are both circular. The rotating block 65 is rotationally arranged in the rotating groove 631. The groove wall close to the hand wheel 64 is provided with a let-out hole 632. The inner diameter of the let-out hole 632 is smaller than the diameter of the rotating block 65. The stop screw 62 is rotationally arranged in the let-out hole 632. When the stop screw 62 rotates, the rotating block 65 will synchronously rotate, and the stop block 63 will move to the side close to or away from the cooling fin 21, so that the stop block 63 moves into or out of the position directly below the positioning groove 51. When the stop block 63 moves into the position directly below the positioning groove 51, the positioning block 22 is blocked by the stop block 63 and cannot move downward, so that the locking of the connecting plate 5 can be realized. When the stop block 63 moves out of the position directly below the positioning groove 51, the positioning block 22 is no longer limited by the stop block 63, so that the unlocking of the connecting plate 5 can be realized.

[0048] With reference to Figure 2 In order to reduce the influence of the connecting plate 5 on the heat dissipation in the heat dissipation cavity 3, a plurality of air permeable holes 4 are also arranged on the connecting plate 5 in the embodiment. Each air permeable hole 4 can be in communication with the adjacent heat dissipation cavity 3 after the connecting plate 5 is installed in place, so as to play a role in auxiliary ventilation and heat dissipation.

[0049] With reference to Figure 4 、 Figure 5 The side of the connecting plate 5 close to the cooling fin 21 is provided with a plurality of groups of cleaning pieces 7 for cleaning the dust in the heat dissipation cavity 3. The number of the cleaning pieces 7 on each connecting plate 5 is equal to and corresponds to the number of the heat dissipation cavities 3 in the adjacent heat sink 2. Each group of cleaning pieces 7 comprises an installation block 71 rotationally arranged on the connecting plate 5 and a cleaning brush 72 detachably connected to the installation block 71. The installation block 71 comprises an installation portion 711 and extension portions 712 slidingly arranged on the opposite sides of the installation portion 711. One end of the installation portion 711 is rotationally connected to the connecting plate 5 through a rotating shaft 52. The side of the extension portion 712 close to the installation portion 711 is fixed with a dovetail block 713. The opposite end faces of the installation portion 711 are respectively provided with dovetail grooves 714 slidingly matched with the dovetail block 713. The side of the dovetail groove 714 away from the rotating shaft 52 is provided with an installation opening. The dovetail block 713 can move into or out of the dovetail groove 714 along the installation opening, so as to realize the detachable connection between the installation portion 711 and the extension portion 712.

[0050] With reference to Figure 5The cleaning brush 72 comprises a first brush 721 for cleaning dust on the heat dissipation fins 21, and a second brush 722 for cleaning the transformer body 1. The first brush 721 is provided with two groups and is detachably connected to different extension portions 712. The second brush 722 is detachably connected to the mounting portion 711 away from the rotating shaft 52. The first brush 721 and the second brush 722 in the embodiment both comprise a base sheet 723 and brush hairs 724 which are spaced apart on the side of the base sheet 723 away from the mounting block 71. The base sheet 723 is made of a material capable of flexible deformation, such as Kevlar fabric. The brush hairs 724 are fixedly connected to the base sheet 723. In order to prevent the dovetail block 713 from being detached from the dovetail groove 714, the length of the base sheet 723 of the second brush 722 is greater than the width of the mounting portion 711, and the width of the base sheet 723 is greater than the width of the mounting portion 711, so that the second brush 722 can completely block the mounting opening after being assembled in place, preventing the extension portion 712 from being separated from the mounting portion 711.

[0051] With reference to Figure 5 The first brush 721 and the second brush 722 are respectively bonded to the mounting block 71 by a group of magic tapes 8. The magic tape 8 comprises a hook piece 81 and a hair piece 82 which are bonded together. The hook piece 81 is fixedly arranged on the first brush 721 or the second brush 722. The hair piece 82 is fixedly arranged on the mounting block 71. The structure is simple and convenient to disassemble and assemble.

[0052] With reference to Figure 4 The connecting plate 5 is provided with a driving member 9 for driving the mounting block 71 to rotate. The driving member 9 comprises a driving motor 91 mounted on the connecting plate 5, a driving gear 92 fixedly connected to the output shaft of the driving motor 91, and a driven gear 93 engaged on one side of the driving gear 92. The rotating shaft 52 of each group of cleaning members 7 is fixedly connected to the mounting block 71 and is fixedly connected to the driven gear 93. The driving motor 91 in the embodiment is preferably a servo motor whose output shaft can rotate in both directions. When the driving member 9 is working, the mounting block 71 drives the cleaning brush 72 to rotate relative to the connecting plate 5, and then the first brush 721 abuts against the adjacent heat dissipation fin 21 and the second brush 722 abuts against the transformer body 1. Thus, the abutting or separation of the cleaning brush 72 and the cavity wall of the heat dissipation cavity 3 is realized.

[0053] With reference to Figure 2 , Figure 4 In order to reduce the occupied space of the cleaning member 7 when not in use, a receiving groove 53 is formed in the side wall of the connecting plate 5 facing the heat dissipation fin 21. The rotating shaft 52 is rotatably arranged on the groove wall of the receiving groove 53. The cleaning member 7 can be rotated into the receiving groove 53 for storage, thereby saving space.

[0054] The implementation principle of the embodiment of the application is that when the dust in the adjacent cooling fin 21 is cleaned, the driving motor 91 is first started to make the driving gear 92 and the driven gear 93 rotate circumferentially, and then the mounting block 71 drives the cleaning brush 72 to rotate to the side close to the transformer main body 1 until the first brush 721 abuts against the cooling fin 21 and the second brush 722 abuts against the transformer main body 1; then the locking screw 62 is rotated to the side away from the cooling fin 21, so that the locking block 63 moves out of the position directly below the positioning groove 51, and the unlocking of the connecting plate 5 is realized. At this time, the operator can move the connecting plate 5 back and forth along the vertical direction to make the cleaning brush 72 move synchronously and clean the dust in the dust removal cavity 3. Compared with the conventional way of holding a cloth to clean the dust in the dust removal cavity 3, the operation is more convenient, and the dust removal effect is good.

[0055] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An energy-saving oil-immersed transformer for high-salt-mist areas, comprising a transformer body (1) and a radiator (2) arranged on the transformer body (1), wherein the radiator (2) comprises a plurality of radiating fins (21) arranged in a horizontal direction at intervals, and radiating cavities (3) are formed between adjacent radiating fins (21), characterized in that: a connecting plate (5) is detachably arranged on the radiator (2), and a plurality of cleaning pieces (7) for cleaning dust in the radiating cavities (3) are arranged on one side of the connecting plate (5) facing the radiating fins (21), wherein the number of the cleaning pieces (7) is equal to that of the radiating cavities (3) and each cleaning piece (7) corresponds to one radiating cavity (3); each cleaning piece (7) comprises a mounting block (71) rotatably arranged on the connecting plate (5) and a cleaning brush (72) detachably connected to the mounting block (71); the connecting plate (5) is provided with a driving member (9) for driving the mounting block (71) to rotate and drive the cleaning brush (72) to rotate; the cleaning brush (72) can be brought into abutment with or separated from the cavity wall of the radiating cavity (3) under the action of the driving member (9); the driving member (9) comprises a driving motor (91) arranged on the connecting plate (5), a driving gear (92) fixedly connected to the output shaft of the driving motor (91), and a driven gear (93) engaged on one side of the driving gear (92); the mounting blocks (71) in each group of cleaning pieces (7) are rotatably connected to the connecting plate (5) through a same rotating shaft (52); the driven gear (93) is fixedly connected to the rotating shaft (52); a receiving groove (53) for accommodating the cleaning piece (7) is formed in the side wall of the connecting plate (5) facing the radiating fins (21); and the rotating shaft (52) is rotatably arranged on the groove wall of the receiving groove (53); the cleaning brush (72) comprises a first brush (721) for cleaning dust on the radiating fins (21) and a second brush (722) for cleaning dust on the transformer body (1); the second brush (722) is located at the end of the mounting block (71) away from the rotating shaft (52); and the first brush (721) and the second brush (722) are respectively bonded to the mounting block (71) through a group of magic tapes (8).

2. The energy-saving oil-immersed transformer for high-salt-mist areas according to claim 1, characterized in that: the mounting block (71) comprises a mounting portion (711) fixedly connected to the rotating shaft (52) and extension portions (712) slidably arranged on both sides of the mounting portion (711); a dovetail block (713) is fixedly arranged on one side of the extension portion (712) facing the mounting portion (711); dovetail grooves (714) are respectively formed in the opposite end faces of the mounting portion (711) and slidably matched with the dovetail block (713); an installation opening for the dovetail block (713) to move in or out is arranged on one side of the dovetail groove (714) away from the rotating shaft (52); and the second brush (722) can shield the installation opening.

3. The energy-saving oil-immersed transformer for high-salt-mist areas according to claim 1, characterized in that: ​ ​ The first brush (721) and the second brush (722) each comprise a base sheet (723) of flexible material, a plurality of bristles (724) fixed to the side of the base sheet (723) away from the mounting block (71), the bristles (724) being spaced apart on the base sheet (723).

4. The energy-saving oil-immersed transformer for high-salt-fog areas according to claim 1, characterized in that: The positioning block (22) is fixed to the side of the heat dissipation fin (21) away from the transformer main body (1), the vertical positioning groove (51) is formed in the side wall of the connecting plate (5) close to the heat dissipation fin (21), the top end of the positioning groove (51) is closed, the bottom end is provided with an opening for the vertical insertion of the positioning block (22), the width of the positioning block (22) and the positioning groove (51) gradually decreases in the direction from the heat dissipation fin (21) to the transformer main body (1), and the bottom of the connecting plate (5) is provided with the stopper (6) for preventing the positioning block (22) from moving out of the positioning groove (51).

5. The energy-saving oil-immersed transformer for high-salt-fog areas according to claim 4, characterized in that: The stopper (6) comprises the fixed block (61) fixed to the lower side of the connecting plate (5), the stopper screw (62) threadedly connected to the fixed block (61), and the stopper block (63) rotatably arranged on the side of the stopper screw (62) facing the heat dissipation fin (21), the stopper block (63) being horizontally slidably arranged on the connecting plate (5); when the stopper screw (62) is rotated, the stopper block (63) can move into or out of the position directly below the positioning groove (51).

6. The energy-saving oil-immersed transformer for high-salt-fog areas according to claim 5, characterized in that: One side of the stopper screw (62) is fixed with the hand wheel (64), the other side is fixed with the rotating block (65), the rotating groove (631) is formed in the stopper block (63) and matched with the rotating block (65), the accommodation hole (632) is formed in the groove wall of the rotating groove (631) and matched with the stopper screw (62), and the inner diameter of the accommodation hole (632) is smaller than the diameter of the rotating block (65).

7. The energy-saving oil-immersed transformer for high-salt-fog areas according to claim 1, characterized in that: A plurality of air holes (4) are formed in the heat dissipation fin (21) and the connecting plate (5), and the air holes (4) are in communication with the adjacent heat dissipation cavities (3).

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