Self-cleaning heat-dissipation oil-immersed transformer

Abstract

The application provides a self-cleaning heat dissipation oil-immersed transformer, and belongs to the technical field of transformers. The self-cleaning heat dissipation oil-immersed transformer comprises a shell, four groups of heat dissipation fins and a cleaning device. The cleaning device comprises a lifting frame and multiple groups of cleaning units. The lifting frame is vertically and slidingly arranged outside the shell and is connected with a driving member. The cleaning units are in one-to-one correspondence with cleaning gaps between adjacent heat dissipation fins of the same group. Each cleaning unit comprises a connecting rod, a cleaning disc and a self-rotation assembly. One end of the connecting rod is fixed to the lifting frame. The cleaning disc is rotationally arranged on the connecting rod, and the two end faces of the cleaning disc are respectively attached to the surfaces of the heat dissipation fins on the two sides of the cleaning gap. The self-rotation assembly is arranged between the cleaning disc and the shell and is used for driving the cleaning disc to rotate when the cleaning disc slides with the lifting frame. The self-rotation assembly enables the cleaning disc to rotate during the lifting process, so that the cleaning disc and the surface of the heat dissipation fin form a rolling wiping contact mode, and the accumulated dust in the gap is more effectively cleaned.

Description

Technical Field

[0001] This application belongs to the technical field of transformers, and more specifically, relates to a self-cleaning, heat-dissipating oil-immersed transformer. Background Technology

[0002] Oil-immersed transformers use insulating oil as the primary insulation medium and rely on oil as the cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling, and forced oil circulation.

[0003] Oil-immersed transformers typically have a row of heat sinks connected around each side of the casing. Each side of the casing has a set of heat sinks. Because the heat sinks are in prolonged contact with the external environment, a layer of dust accumulates on their surface, affecting heat dissipation. Currently, cleaning the heat sinks on transformers is usually done manually on a regular basis, but the limited space between adjacent heat sinks in each set makes this difficult.

[0004] Some transformers use electric cleaning, which involves installing an electric lifting structure with a cleaning brush on the outside of the transformer casing. The electric lifting structure drives the cleaning brush to move up and down between adjacent heat sinks to perform friction cleaning. However, this method often results in poor cleaning of the heat sink surface. Summary of the Invention

[0005] The purpose of this application is to provide a self-cleaning, heat-dissipating oil-immersed transformer to solve the technical problem that the electric cleaning method in the prior art often results in poor cleaning effect on the surface of the heat sink.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide a self-cleaning, heat-dissipating oil-immersed transformer, including a housing and four sets of heat sinks arranged around the housing, each set of heat sinks including multiple spaced heat sinks, with a cleaning gap between each pair of adjacent heat sinks in the same set; the self-cleaning, heat-dissipating oil-immersed transformer also includes a cleaning device corresponding to each of the four sets of heat sinks, the cleaning device including: A lifting frame is disposed on the outside of the housing, and the lifting frame is connected to a driving component disposed on the housing, the driving component being used to drive the lifting frame to slide up and down; and Multiple cleaning units are installed on the lifting frame (3) and correspond one-to-one with multiple cleaning gaps (21); The cleaning unit includes: A connecting rod is located within the cleaning gap, and one end is fixed to the lifting frame; A cleaning disc, rotatably mounted on the connecting rod, has its two end faces respectively abutting the surfaces of the heat sinks on both sides of the cleaning gap; and A self-rotating component is disposed between the cleaning disc and the housing. The self-rotating component is used to drive the cleaning disc to rotate when the cleaning disc slides with the lifting frame.

[0007] In one possible implementation, based on the above technical solutions, the cleanup disk includes: Two rotating disks are arranged on both sides of the connecting rod, rotating relative to each other; and Two cleaning pads correspond one-to-one with the two rotating disks and are fixed on the opposite end faces of the two rotating disks. The outer end face of the cleaning pad is attached to the surface of the heat sink.

[0008] In one possible implementation, based on the above technical solutions, the self-rotating component includes: A rack, vertically fixed to the outside of the housing and located within the cleaning gap; and The gear is coaxially fixed to the rotating disk and meshes with the rack.

[0009] In one possible implementation, based on the above technical solutions, each cleaning unit has two cleaning discs, which are distributed along the horizontal length of the heat sink; there are two gears that correspond one-to-one with the cleaning discs, and the gears near the housing mesh with the rack and another gear respectively.

[0010] In one possible implementation, based on the above technical solutions, the outer end face of the cleaning pad is provided with a plurality of circumferentially distributed collection grooves, the inside of the rotating disk has a cavity communicating with each of the collection grooves, the inside of the rotating shaft of the rotating disk is provided with a connecting hole communicating with the cavity, the inside of the connecting rod is provided with a conveying groove communicating with the connecting hole, and the lifting frame is provided with a negative pressure component corresponding to each of the conveying grooves, the negative pressure component being used to extract the flowing medium in the conveying groove.

[0011] In one possible implementation, based on the above technical solutions, the negative pressure component is a fan, the lifting frame has a receiving groove connected to the conveying groove, and the bottom of the receiving groove is open; a filter screen is provided on the side of the fan near the conveying groove, and a cleaning door is provided at the bottom of the lifting frame to close all the bottom openings of the receiving grooves.

[0012] In one possible implementation, based on the above technical solutions, the rotating disk includes: A conveyor disc, rotatably connected to the connecting rod, wherein the cavity is located inside the conveyor disc; and A receiving plate is coaxially fixed to the inner end face of the cleaning pad, and a receiving groove corresponding to the collection groove is opened on the outer end face of the receiving plate; a plurality of through holes are opened on the receiving plate, one end of the through hole is connected to the cavity, and the other end is connected to the corresponding receiving groove.

[0013] In one possible implementation, based on the above technical solutions, both the collecting groove and the receiving groove are arc-shaped. The convex surface of the inner wall of the receiving groove faces its own rotation direction, while the concave surface faces away from its own rotation direction. The through hole is inclinedly opened on the convex surface of the receiving groove.

[0014] In one possible implementation, based on the above technical solutions, each heat sink group has an installation space in the middle, the drive component is disposed in the installation space and connected to the middle of the lifting frame; the left and right ends of the lifting frame extend to the sides corresponding to the heat sink group and are slidably connected to the housing.

[0015] In conjunction with the above technical solutions, in one possible implementation, the self-cleaning, heat-dissipating oil-immersed transformer further includes: The mounting plate is detachably connected to the side of the housing, and the mounting plate has through holes corresponding to the positions of the heat sink assembly; the lifting frame, the driving component and the cleaning unit are all located on the mounting plate.

[0016] The beneficial effects of the self-cleaning heat-dissipating oil-immersed transformer provided in this application are as follows: Compared with the prior art, this application uses a lifting frame to drive the cleaning unit to move vertically along the heat sink, and at the same time, the self-rotating component makes the cleaning disc rotate during the lifting process, so that the cleaning disc and the surface of the heat sink form a rolling wiping contact, which can more fully contact the fine uneven structure of the heat sink surface and achieve a more effective cleaning effect on the dust attached to the gaps. The cleaning disc also adheres to the heat sink surface on both sides of the cleaning gap, improving the efficiency of the cleaning operation, and eliminating the need for manual operation into the narrow gaps of the heat sink, reducing the difficulty and safety risks of manual cleaning, and achieving a more uniform and comprehensive cleaning effect within the limited cleaning gaps, thus improving the problem of insufficient cleaning in traditional electric cleaning methods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a self-cleaning, heat-dissipating oil-immersed transformer provided in an embodiment of this application; Figure 2 This is a schematic diagram of the cleaning device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the cleaning unit and the self-rotating assembly provided in the embodiments of this application; Figure 4 A radial cross-sectional view of the cleaning unit provided in an embodiment of this application; Figure 5 An axial sectional view of the cleaning unit provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the cleaning disk provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the rotating disk provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the transformer after the protective cover and baffle are installed on the front side, as provided in the embodiment of this application.

[0019] The labels for the attached figures are as follows: 1. Shell; 2. Heat sink; 21. Clearing gaps; 22. Installation space; 3. Lifting frame; 31. Drive unit; 32. Negative pressure unit; 33. Receiving slot; 34. Cleaning door; 4. Connecting rod; 41. Conveying trough; 5. Cleaning disc; 51. Rotary disc; 511. Conveying disc; 5111. Cavity; 512. Receiving disc; 5121. Receiving slot; 5122. Through hole; 52. Cleaning pad; 521. Collection slot; 6. Self-rotating assembly; 61. Rack; 62. Gear; 7. Mounting plate. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0022] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise expressly and specifically defined.

[0026] The present application provides a description of a self-cleaning, heat-dissipating oil-immersed transformer.

[0027] like Figure 1 and Figure 2As shown, one embodiment of this application provides a self-cleaning heat dissipation oil-immersed transformer, including a housing 1 and four sets of heat dissipation fins arranged around the housing 1. Each set of heat dissipation fins includes multiple heat dissipation fins 2 spaced apart, and there is a cleaning gap 21 between each two adjacent heat dissipation fins 2 in the same set. The self-cleaning heat dissipation oil-immersed transformer also includes a cleaning device corresponding to each of the four sets of heat dissipation fins.

[0028] The cleaning device includes a lifting frame 3 and multiple cleaning units; the lifting frame 3 is vertically slidably arranged on the outside of the housing 1, and the lifting frame 3 is connected to a drive component 31 arranged on the housing 1. The drive component 31 is used to drive the lifting frame 3 to slide up and down; multiple cleaning units are arranged on the lifting frame 3, and the cleaning units correspond one-to-one with the cleaning gaps 21.

[0029] like Figure 2 and Figure 3 As shown, the cleaning unit includes a connecting rod 4, a cleaning disc 5, and a self-rotating assembly 6; the connecting rod 4 is located within the cleaning gap 21, and one end is fixed to the lifting frame 3; the cleaning disc 5 is rotatably mounted on the connecting rod 4, and the two end faces of the cleaning disc 5 are respectively attached to the surfaces of the heat sinks 2 on both sides of the cleaning gap 21; the self-rotating assembly 6 is disposed between the cleaning disc 5 and the housing 1, and the self-rotating assembly 6 is used to drive the cleaning disc 5 to rotate when the cleaning disc 5 slides with the lifting frame 3.

[0030] The drive unit 31 can be a linear module or a rodless cylinder, which is vertically installed on the outside of the housing 1 and fixes its own slide plate to the lifting frame 3.

[0031] This embodiment provides a self-cleaning, heat-dissipating, oil-immersed transformer. Compared with the prior art, the cleaning unit is driven to move vertically along the heat sink 2 by the lifting frame 3. At the same time, the self-rotating component 6 makes the cleaning disc 5 rotate during the lifting process, so that the cleaning disc 5 and the surface of the heat sink 2 form a rolling wiping contact. This is different from the traditional linear reciprocating brushing cleaning method. It can make more full contact with the fine uneven structure of the surface of the heat sink 2, and form a more effective cleaning effect on the dust attached to the gaps.

[0032] The cleaning disc 5 simultaneously adheres to the surfaces of the heat sinks 2 on both sides of the cleaning gap 21. A single lifting stroke can simultaneously complete the cleaning of the opposite sides of two adjacent heat sinks 2, improving the efficiency of the cleaning operation. It also eliminates the need for manual operation by reaching into the narrow gap between the heat sinks 2, reducing the difficulty and safety risks of manual cleaning. It can achieve a more uniform and comprehensive cleaning effect within the limited cleaning gap 21, improving the problem of insufficient cleaning in traditional electric cleaning methods.

[0033] like Figure 3 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The cleaning disc 5 includes two rotating discs 51 and two cleaning pads 52; the two rotating discs 51 are arranged on both sides of the connecting rod 4 in a relative rotational manner; the two cleaning pads 52 correspond one-to-one with the two rotating discs 51 and are fixed on the opposite end faces of the two rotating discs 51, and the outer end face of the cleaning pad 52 is attached to the surface of the heat sink 2.

[0034] The cleaning pad 52 can be a combination of a hard brush and a soft brush, or it can be insulating rubber pasted onto the rotating disk 51.

[0035] The separate structure of the dual rotating disk 51 and dual cleaning pad 52 allows the cleaning pads 52 on both sides to independently adhere to the surface of the corresponding heat sink 2. This better adapts to the slight flatness deviations of the heat sink 2 surface, ensures the adhesion of the cleaning contact surface, reduces cleaning blind spots caused by insufficient adhesion, and provides reasonable structural space for the subsequent dust extraction function.

[0036] Meanwhile, the cleaning pad 52 and the rotating disk 51 are set up independently, so the cleaning pad 52 can be replaced separately when it is worn or aged, without having to replace the entire cleaning disk 5 component. This helps to reduce the later maintenance cost of the device. Different materials of cleaning pad 52 can also be replaced according to different dust accumulation conditions, which improves the device's adaptability to different usage environments.

[0037] like Figure 3 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The self-rotating assembly 6 includes a rack 61 and a gear 62; the rack 61 is vertically fixed to the outside of the housing 1 and located in the cleaning gap 21; the gear 62 is coaxially fixed to the rotating disk 51 and meshes with the rack 61.

[0038] The cleaning disc 5 is rotated by a purely mechanical transmission structure with a rack 61 and a gear 62 meshing. This eliminates the need to configure a separate rotation drive element for each cleaning unit, simplifies the power supply system and control logic of the device, reduces the overall complexity and failure probability of the device, and makes it more adaptable to the complex temperature, humidity and dust environment of outdoor transformers.

[0039] The rotation of the cleaning disc 5 is synchronously driven by the lifting action, and the transmission relationship is stable and reliable. This ensures that the rotation speed of the cleaning disc 5 and the lifting speed form a stable matching relationship, guaranteeing that the cleaning trajectory is evenly distributed during the wiping process, reducing cleaning dead corners, and improving the consistency of the cleaning effect on the surface of the heat sink 2.

[0040] like Figure 3 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: Each cleaning unit has two cleaning discs 5, which are distributed along the horizontal length of the heat sink 2; there are two gears 62, which correspond one-to-one with the cleaning discs 5, and the gears 62 near the housing 1 are respectively engaged with the rack 61 and another gear 62.

[0041] Two cleaning discs 5 are arranged along the horizontal length of the heat sink 2. Compared with the structure of using a single large-diameter cleaning disc 5, the radial dimensions of a single cleaning disc 5 and gear 62 can be effectively reduced, while the rotation speed is increased, further enhancing the cleaning effect on the attached dust.

[0042] The two cleaning discs 5 rotate in opposite directions through gear 62. During the wiping process, the forces exerted on the dust are complementary, which helps to loosen dust with different adhesion states and improves the cleaning ability of more firmly attached dust.

[0043] like Figures 4 to 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The outer end face of the cleaning pad 52 is provided with multiple circumferentially distributed collection grooves 521. The inside of the rotating disk 51 is provided with cavities 5111 that are connected to each collection groove 521. The rotating shaft of the rotating disk 51 is provided with a connecting hole that is connected to the cavity 5111. The inside of the connecting rod 4 is provided with a conveying groove 41 that is connected to the connecting hole. The lifting frame 3 is provided with a negative pressure member 32 that corresponds to the conveying groove 41. The negative pressure member 32 is used to extract the flowing medium in the conveying groove 41.

[0044] The addition of a negative pressure suction structure to the mechanical wiping cleaning system allows the dust wiped off by the cleaning pad 52 to be collected in the cavity 5111 inside the rotating disk 51 through the collection groove 521, and then discharged outward through the conveying groove 41 in the connecting rod 4. This reduces the amount of dust remaining in the cleaning gap 21, reduces the possibility of dust adhering to the surface of the heat sink 2 again, and helps to improve the cleanliness after cleaning.

[0045] The negative pressure conveying channel is integrated inside the connecting rod 4 and the rotating disk 51, eliminating the need for additional external piping. The overall structure is compact and does not occupy the limited space of the cleaning gap 21, ensuring the adaptability of the device in narrow heat dissipation gaps and making the device look more regular.

[0046] like Figure 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The negative pressure component 32 is a fan. The lifting frame 3 has a receiving groove 33 connected to the conveying groove 41, and the bottom of the receiving groove 33 is open. A filter screen is provided on the side of the fan near the conveying groove 41. The bottom of the lifting frame 3 is provided with a cleaning door 34 for closing the bottom openings of all the receiving grooves 33.

[0047] Using a fan as the negative pressure generating element is a mature and reliable technology that can meet the requirements of long-term outdoor operation. Integrating the fan into the receiving slot 33 of the lifting frame 3 allows for a more compact overall layout of the device, reduces external protruding structures, and minimizes the impact of external impacts on the fan.

[0048] The filter screen can filter and intercept dust-laden airflow, trapping dust inside the receiving tank 33, preventing dust from entering the fan and causing wear on components, thus helping to extend the service life of the fan.

[0049] An openable cleaning door 34 is provided at the bottom, which makes it easy for maintenance personnel to clean the dust collected in the receiving tank 33 regularly. The maintenance operation is simple and reduces the difficulty of daily operation and maintenance of the device.

[0050] like Figure 4 and Figure 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The rotating disk 51 includes a conveying disk 511 and a receiving disk 512; the conveying disk 511 is rotatably connected to the connecting rod 4, and the cavity 5111 is located inside the conveying disk 511; the receiving disk 512 is coaxially fixed to the inner end face of the cleaning pad 52, and the outer end face of the receiving disk 512 is provided with a receiving groove 5121 corresponding to the collection groove 521; the receiving disk 512 is provided with a plurality of through holes 5122, one end of the through hole 5122 is connected to the cavity 5111, and the other end is connected to the corresponding receiving groove 5121.

[0051] Dividing the rotating disk 51 into two parts, a conveying disk 511 and a receiving disk 512, reduces the difficulty of machining the internal cavity 5111 and through hole 5122, improves the manufacturability of production, and facilitates mass production. The receiving groove 5121 on the receiving disk 512 corresponds one-to-one with the collection groove 521 of the cleaning pad 52, allowing the dust removed by wiping to first collect in the collection groove 521 and the receiving groove 5121, and then enter the cavity 5111 of the conveying disk 511 through the through hole 5122. This makes the dust collection path smoother, reduces the accumulation of dust on the surface of the cleaning pad 52, helps maintain the cleaning ability of the cleaning pad 52, and ensures the stability of the cleaning effect during long-term cleaning operations.

[0052] Meanwhile, the hole connection between the through hole 5122 and the receiving slot 5121, compared to the receiving slot 5121 being directly connected to the cavity 5111, can increase the wind pressure at the through hole 5122 in the receiving slot 5121 and improve the dust extraction effect.

[0053] like Figures 6 to 7 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: Both the collecting groove 521 and the receiving groove 5121 are arc-shaped. The convex surface of the inner wall of the receiving groove 5121 faces its own rotation direction, while the concave surface faces away from its own rotation direction. The through hole 5122 is inclinedly opened on the convex surface of the receiving groove 5121.

[0054] During the rotation of the cleaning disc 5, the arc-shaped design of the collecting trough 521 and the receiving trough 5121, and the location of the through hole 5122, guide and collect the dust that has been wiped off, making it easier for the dust to enter the trough and reducing the amount of dust that drifts outward along the surface of the cleaning pad 52. The through hole 5122 is inclined on the convex surface of the receiving trough 5121, which allows the negative pressure airflow to more smoothly draw the dust collected in the trough into the cavity 5111, reducing the amount of dust remaining in the trough.

[0055] Meanwhile, the arc-shaped groove structure makes the contact transition with the surface of the heat sink 2 smoother during the rotation and wiping process, which can reduce the scratch damage caused by sharp structures to the surface of the heat sink 2 and improve the safety of the cleaning operation.

[0056] like Figures 1 to 2 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: Each heat sink 2 has an installation space 22 in the middle, and the drive unit 31 is set in the installation space 22 and connected to the middle of the lifting frame 3; the left and right ends of the lifting frame 3 extend to the sides of the same heat sink group and are slidably connected to the housing 1.

[0057] The lifting frame 3 adopts a structure with central drive and two-end guidance, which makes the force more balanced during the lifting process and the operation more stable. This reduces the occurrence of problems such as tilting of the lifting frame 3 and jamming of the cleaning disc 5, ensuring smooth operation of cleaning work and also helping to maintain a stable fit between the cleaning disc 5 and the surface of the heat sink 2.

[0058] like Figures 1 to 2 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The self-cleaning heat dissipation oil-immersed transformer also includes a mounting plate 7, which is detachably connected to the side of the housing 1 by multiple bolts. The mounting plate 7 has through holes corresponding to the positions of the heat sinks 2 in the same group. The lifting frame 3, the drive unit 31 and the cleaning unit are all located on the mounting plate 7.

[0059] The detachable mounting plate 7 is used as the integrated carrier of the cleaning device, making the entire cleaning device an independent modular unit. Depending on the actual installation environment of the transformer, dust accumulation rate and other actual conditions, the device can be flexibly installed on the transformer for a long time, or it can be temporarily installed only during cleaning operations and removed after the operation is completed, adapting to different usage scenarios and maintenance needs.

[0060] The detachable connection method also makes it easy to disassemble the entire cleaning device for inspection or replacement without making major modifications to the transformer housing 1, thus reducing the installation and modification costs and maintenance difficulty of the device.

[0061] refer to Figure 8 When the cleaning device is installed on the transformer for a long time, a protective cover with an opening at the bottom can be installed on the mounting plate 7 to protect the cleaning device without affecting the cleaning operation; at the same time, a baffle located in the installation space 22 is installed at the bottom of the lifting frame 3 to provide daily protection for the drive component 31.

[0062] Furthermore, the mounting plate 7, rack 61, and protective cover can be made of the same material as the heat sink 2 to improve the heat dissipation effect of the transformer.

[0063] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A self-cleaning, heat-dissipating oil-immersed transformer, comprising a housing (1) and four sets of heat sinks arranged around the housing (1), each set of heat sinks comprising a plurality of spaced heat sinks (2), with a cleaning gap (21) between each pair of adjacent heat sinks (2) in the same set; characterized in that, The self-cleaning, heat-dissipating oil-immersed transformer also includes a cleaning device corresponding to each of the four heat sink groups. The cleaning device includes: A lifting frame (3) is disposed on the outside of the housing (1). The lifting frame (3) is connected to a driving member (31) disposed on the housing (1). The driving member (31) is used to drive the lifting frame (3) to slide up and down. Multiple cleaning units are installed on the lifting frame (3) and correspond one-to-one with multiple cleaning gaps (21); The cleaning unit includes: The connecting rod (4) is located in the cleaning gap (21) and one end is fixed to the lifting frame (3). A cleaning disc (5) is rotatably mounted on the connecting rod (4), with its two end faces respectively abutting the surfaces of the heat sinks (2) on both sides of the cleaning gap (21); and A self-rotating component (6) is disposed between the cleaning disc (5) and the housing (1). The self-rotating component (6) is used to drive the cleaning disc (5) to rotate when the cleaning disc (5) slides with the lifting frame (3). The cleaning disk (5) includes: Two rotating disks (51) are rotatably disposed on both sides of the connecting rod (4); and Two cleaning pads (52) correspond one-to-one with the two rotating disks (51) and are fixed on the opposite end faces of the two rotating disks (51). The outer end face of the cleaning pad (52) is attached to the surface of the heat sink (2). The cleaning pad (52) has multiple circumferentially distributed collection grooves (521) on its outer end face. The rotating disk (51) has cavities (5111) that communicate with each of the collection grooves (521). The rotating shaft of the rotating disk (51) has a connecting hole that communicates with the cavity (5111) on its coaxial axis. The connecting rod (4) has a conveying groove (41) that communicates with the connecting hole. The lifting frame (3) is provided with a negative pressure member (32) that corresponds to the conveying groove (41) one by one. The negative pressure member (32) is used to extract the flowing medium in the conveying groove (41). The rotating disk (51) includes: A conveyor disc (511) is rotatably connected to the connecting rod (4), and the cavity (5111) is located inside the conveyor disc (511); and The receiving disk (512) is coaxially fixed to the inner end face of the cleaning pad (52), and the outer end face of the receiving disk (512) is provided with a receiving groove (5121) corresponding to the collection groove (521); the receiving disk (512) is provided with a plurality of through holes (5122), one end of the through hole (5122) is connected to the cavity (5111), and the other end is connected to the corresponding receiving groove (5121).

2. The self-cleaning, heat-dissipating oil-immersed transformer as described in claim 1, characterized in that, The self-rotating component (6) includes: A rack (61) is vertically fixed to the outside of the housing (1) and located within the cleaning gap (21); and The gear (62) is coaxially fixed to the rotating disk (51) and meshes with the rack (61).

3. A self-cleaning, heat-dissipating oil-immersed transformer as described in claim 2, characterized in that, Each cleaning unit has two cleaning discs (5), which are distributed along the horizontal length of the heat sink (2); there are two gears (62) that correspond one-to-one with the cleaning discs (5), and the gears (62) closer to the housing (1) are respectively engaged with the rack (61) and the other gear (62).

4. A self-cleaning, heat-dissipating oil-immersed transformer as described in claim 1, characterized in that, The negative pressure component (32) is a fan. The lifting frame (3) has a receiving groove (33) connected to the conveying groove (41). The bottom of the receiving groove (33) is open. A filter screen is provided on the side of the fan near the conveying groove (41). The bottom of the lifting frame (3) is provided with a cleaning door (34) for closing all the bottom openings of the receiving grooves (33).

5. A self-cleaning, heat-dissipating oil-immersed transformer as described in claim 1, characterized in that, Both the collecting groove (521) and the receiving groove (5121) are arc-shaped. The convex surface of the inner wall of the receiving groove (5121) faces its own rotation direction, and the concave surface faces away from its own rotation direction. The through hole (5122) is inclinedly opened on the convex surface of the receiving groove (5121).

6. A self-cleaning, heat-dissipating oil-immersed transformer as described in any one of claims 1-5, characterized in that, Each heat sink assembly has an installation space (22) in the middle, and the drive unit (31) is located in the installation space (22) and connected to the middle of the lifting frame (3); the left and right ends of the lifting frame (3) extend to the sides of the corresponding heat sink assembly and are slidably connected to the housing (1).

7. A self-cleaning, heat-dissipating oil-immersed transformer as described in any one of claims 1-5, characterized in that, The self-cleaning, heat-dissipating oil-immersed transformer also includes: Mounting plate (7) is detachably connected to the side of housing (1). The mounting plate (7) has through holes corresponding to the position of the heat sink assembly. The lifting frame (3), the driving component (31) and the cleaning unit are all located on the mounting plate (7).

Images