Self-cleaning oil-immersed transformer

Abstract

The utility model relates to a self-cleaning oil-immersed transformer which comprises an oil-immersed transformer assembly, the oil-immersed transformer assembly comprises a transformer box body and a supporting bottom box fixed to the bottom face of the transformer box body, and inverted L-shaped vertical plates are symmetrically installed on the two sides of the top face of the transformer box body. A hydraulic lifting rod is longitudinally installed on the bottom face of the free end of each L-shaped vertical plate, a rectangular lifting frame arranged on the outer sides of cooling fins on the peripheral side of the transformer box in a covering mode is connected to the lower portion of the lifting end of each hydraulic lifting rod, and cleaning brushes arranged between every two adjacent cooling fins are installed on the inner wall of each rectangular lifting frame at equal intervals. L-shaped pressing rods with the free ends extending into the transformer box are installed on the bottom faces of the two sides of the rectangular lifting frame, a lifting inclined sliding rod is hinged to the bottom of the free end of each L-shaped pressing rod, the bottom end of each lifting inclined sliding rod is connected with a cleaning push plate for pushing and cleaning dust on the inner bottom wall of the supporting bottom box, and a dust discharging opening is formed in the middle of the inner bottom wall of the supporting bottom box.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed transformers, in particular to a self-cleaning oil-immersed transformer. Background Art

[0002] Oil-immersed transformer is a kind of distribution transformer, which is mainly a device that changes AC voltage through the principle of electromagnetic induction. Oil-immersed transformer has the advantages of delaying the aging of insulation materials and extending the service life of transformers. It is one of the important equipment in the power supply system of industrial and mining enterprises and civil buildings. When oil-immersed transformers are used in industrial and mining enterprises, a large amount of dust will be generated around the industrial and mining enterprises, which will easily lead to dust impurities hidden in the heat dissipation fins and bottom box of the transformer. However, the current cleaning structure can generally only clean the dust on the heat dissipation fins, and the dust impurities accumulated in the bottom box of the transformer cannot be removed and discharged, which easily leads to more dust accumulation and reduces the service life of the transformer.

[0003] After searching, the existing Chinese patent publication number: CN212724899U is an oil-immersed transformer with a self-cleaning function, including a transformer body, a brush and a cross bar, the transformer body is provided with a heat dissipation fin, and the transformer body is provided with a ventilation hole, and the transformer body is bolted with a motor on the side, and a disc is fixed at the end of the motor output shaft, the cross bar is fixed to the top of the mounting plate, and the cross bar is connected to the fixing plate, the end of the convex tooth rod is fixed with a limiting block, and the convex tooth rod is connected to the gear, and the gear is fixed on the rotating shaft, and the end of the rotating shaft is fixed with a heat dissipation fan.

[0004] The cited patent document also has the same problem, that is, only the dust on the heat sink fins can be cleaned, while the dust and impurities accumulated in the transformer bottom box cannot be removed and discharged, which easily leads to excessive dust accumulation and reduces the service life of the transformer. Utility Model Content

[0005] The purpose of the utility model is to provide a self-cleaning oil-immersed transformer in view of the deficiencies in the prior art, and the self-cleaning oil-immersed transformer can well solve the above-mentioned problems.

[0006] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0007] A self-cleaning oil-immersed transformer is provided, including an oil-immersed transformer assembly, the oil-immersed transformer assembly including a transformer box, a supporting bottom box fixed to the bottom surface of the transformer box, and a movable supporting plate fixed to the bottom surface of the supporting bottom box for support. The top surface of the transformer box is symmetrically provided with inverted L-vertical plates on both sides, and the bottom surface of the free end of each of the L-vertical plates is longitudinally provided with a hydraulic lifting rod, and a rectangular lifting frame is connected below the lifting end of the hydraulic lifting rod, which is covered on the outside of the heat dissipation fins on the peripheral side of the transformer box, and a cleaning brush is equidistantly installed on the inner wall of the rectangular lifting frame and is placed between two adjacent heat dissipation fins. L-pressing rods with free ends extending into the transformer box are installed on the bottom surfaces of both sides of the rectangular lifting frame, and the bottom of the free end of each of the L-pressing rods is hinged with a lifting and tilting sliding rod, and the bottom end of the lifting and tilting sliding rod is connected to a cleaning push plate for pushing and cleaning the dust on the inner bottom wall of the supporting bottom box, and a dust exhaust port is provided in the middle of the inner bottom wall of the supporting bottom box.

[0008] In this solution, preferably, inner walls on both sides of the supporting bottom box are welded with supporting frame plates for mounting electronic devices;

[0009] A first activity space for the lifting, tilting and sliding rod to move is provided between the two support frame plates;

[0010] The two ends of the two support frame plates facing away from each other are each provided with a second activity space for the cleaning push plate to move.

[0011] Preferably, in this solution, one end of each L-type push rod extending into the transformer box is provided with a hinge notch, and the top end of the lifting and tilting sliding rod is connected with a hinge protrusion hinged to the hinge notch.

[0012] Preferably, the bottom ends of the two cleaning push plates are provided with a first cleaning dust shoveling head on one side opposite to the bottom ends of the two cleaning push plates, and the side ends of the two cleaning push plates opposite to each other are provided with a second cleaning dust shoveling head in a centripetal direction.

[0013] Preferably, both ends of the inner bottom wall of the supporting bottom box are integrally formed with arc-shaped slope bodies for the first cleaning dust scraping head of the cleaning push plate to slide centripetally.

[0014] Preferably, the bottom end of each hydraulic lifting rod is fixedly connected to an extended fixed vertical rod, and the extended fixed vertical rod is fixedly installed on the top surface of the rectangular lifting frame.

[0015] Preferably, in the present solution, two movable support plates are symmetrically arranged and auxiliary movable wheels are installed on both sides of the bottom surfaces thereof, and a shock absorbing and buffering mechanism is arranged on the top surface of each movable support plate.

[0016] Preferably, the shock absorbing and buffering mechanism includes a shock absorbing and buffering damper and a compression spring member sleeved on a peripheral side of the shock absorbing and buffering damper.

[0017] In this solution, the top surface of the movable support plate is preferably provided with a plurality of grooves for installing the shock-absorbing buffer damper and the compression spring member;

[0018] The top ends of the shock-absorbing buffer and the compression spring element are elastically in contact with the bottom surface of the supporting bottom box.

[0019] The beneficial effect of the utility model is that: the self-cleaning oil-immersed transformer, the hydraulic lifting rod drives the extended fixed vertical rod to descend, and the two extended fixed vertical rods can drive the rectangular lifting frame to descend, so that each cleaning brush can be lowered between two adjacent heat dissipation fins, and the cleaning brush can be driven by the descending drive of the hydraulic lifting rod to clean up the dust or impurities hidden between the heat dissipation fins, which not only has a neat and beautiful effect, but also can improve the heat dissipation efficiency of the transformer and reduce the energy consumption of the transformer;

[0020] When the hydraulic lifting rod drives the extended fixed vertical rod to descend and drives the rectangular lifting frame to descend, the rectangular lifting frame drives the L lower pressure rod to slide longitudinally in the longitudinal through grooves opened on the outer walls of both sides of the transformer box, so that one end of the L lower pressure rod located in the transformer box drives the lifting and tilting sliding rod to descend. When the lifting and tilting sliding rod descends to the position abutting the inner bottom wall of the supporting bottom box, under the articulated cooperation of the hinge notch, the hinge protrusion and the pin shaft, the two lifting and tilting sliding rods are tilted centripetally, and the rectangular lifting frame and the L lower pressure rod continue to descend, so that the lifting and tilting sliding rod pushes the cleaning push plate to move toward the dust discharge port. Under the action of the first cleaning dust shovel head and the second cleaning dust shovel head, the dust is shoveled and pushed to the dust discharge port, and then discharged from the dust discharge port, which helps to centrally clean the dust falling inside the transformer box, thereby improving cleanliness and reducing the short circuit caused by dust particles floating in the transformer box, thereby improving the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the connection state of the rectangular lifting frame and the cleaning brush of the utility model;

[0024] Figure 3 This is a schematic diagram of the connection state structure of the supporting bottom box and the lifting and tilting sliding rod of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the support bottom box and the lifting and tilting sliding rod of the utility model in the disassembled state;

[0026] Figure 5 This is a structural schematic diagram of the cleaning push plate of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the installation state of the movable support plate and the shock-absorbing buffer damper of the utility model.

[0028] Description of reference numerals:

[0029] In the figure: 1. Oil-immersed transformer assembly; 2. Transformer box; 3. Support bottom box; 4. Rectangular lifting frame; 5. Heat dissipation fins; 6. Moving support plate; 7. Cleaning brush; 8. L-shaped vertical plate; 9. Mounting ear plate; 10. Extended fixed vertical pole;

[0030] 11. Hydraulic lifting rod; 12. Installing bottom plate; 13. L pressing rod; 14. Lifting and tilting sliding rod; 15. Cleaning push plate; 16. Support frame plate; 17. First activity space; 18. Second activity space; 19. Dust exhaust port; 20. Arc slope body;

[0031] 21. First cleaning dust scraper head; 22. Second cleaning dust scraper head; 23. Articulated notch; 24. Articulated protrusion; 25. Auxiliary moving wheel; 26. Groove member; 27. Shock-absorbing buffer damper; 28. Compression spring member. DETAILED DESCRIPTION

[0032] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the utility model and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0035] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0037] This embodiment discloses Figures 1 to 6 A self-cleaning oil-immersed transformer shown in the figure comprises an oil-immersed transformer assembly 1, wherein the oil-immersed transformer assembly 1 comprises a transformer case 2, a supporting bottom box 3 fixed to the bottom surface of the transformer case 2 by bolts, and a movable supporting plate 6 fixed to the bottom surface of the supporting bottom box 3 by bolts for support. Heat dissipation fins 5 are evenly arranged and installed on four outer walls around the bottom surface of the transformer case 2, and two movable supporting plates 6 are symmetrically arranged and auxiliary moving wheels 25 are installed on both sides of the bottom surface thereof. The auxiliary moving wheels 25 facilitate movement of the transformer case 2, and the heat dissipation of the transformer is facilitated by the heat dissipation fins 5.

[0038] In this embodiment, inverted L-shaped vertical plates 8 are symmetrically installed on both sides of the top surface of the transformer box 2, and mounting ear plates 9 are welded to the bottom ends of the L-shaped vertical plates 8. Each mounting ear plate 9 is fixedly connected to the top surface of the transformer box 2 by bolts, so that the L-shaped vertical plates 8 can be fixedly installed. A hydraulic lifting rod 11 is longitudinally installed on the bottom surface of the free end of each L-shaped vertical plate 8. A rectangular lifting frame 4 covering the outer side of the heat dissipation fins 5 arranged on the peripheral side of the transformer box 2 is connected below the lifting end of the hydraulic lifting rod 11. Cleaning brushes 7 placed between two adjacent heat dissipation fins 5 are evenly installed on the inner wall of the rectangular lifting frame 4. The bottom end of each hydraulic lifting rod 11 is fixedly connected to an extended fixed vertical pole 10, and a mounting bottom plate 12 is welded to the bottom end of the extended fixed vertical pole 10. The mounting bottom plate 12 is fixedly installed on the top surface of the rectangular lifting frame 4 by bolts. It should be noted that the L-shaped vertical plate 8, the hydraulic lifting rod 11 and the extended fixed vertical pole 10 are surface-insulated, or an insulating cover is provided on the outside to avoid arc breakdown.

[0039] In this embodiment, the hydraulic lifting rod 11 drives the extended fixed vertical rod 10 to descend, so that the two extended fixed vertical rods 10 can drive the rectangular lifting frame 4 to descend, so that each cleaning brush 7 can be lowered between two adjacent heat dissipation fins 5. Under the downward drive of the hydraulic lifting rod 11, the cleaning brush 7 can be driven to clean up the dust or impurities hidden between the heat dissipation fins 5, which not only has a neat and beautiful effect, but also can improve the heat dissipation efficiency of the transformer and reduce the energy consumption of the transformer.

[0040] In this embodiment, L-type downward pressure rods 13 with free ends extending into the transformer box 2 are installed on the bottom surfaces of both sides of the rectangular lifting frame 4, and a lifting and tilting sliding rod 14 is hinged at the bottom of the free end of each L-type downward pressure rod 13, and a cleaning push plate 15 for pushing and cleaning the dust on the inner bottom wall of the supporting bottom box 3 is connected to the bottom end of the lifting and tilting sliding rod 14, and a dust discharge port 19 is provided in the middle of the inner bottom wall of the supporting bottom box 3, and a hinge notch 23 is provided at one end of each L-type downward pressure rod 13 extending into the transformer box 2, and a hinged protrusion 24 hingedly connected to the hinge notch 23 is connected to the top of the lifting and tilting sliding rod 14, and a first cleaning dust shoveling head 21 is provided on the opposite side of the bottom end of the two cleaning push plates 15, and a second cleaning dust shoveling head 22 is provided on the opposite side of the two cleaning push plates 15 in the centripetal direction, and an arc-shaped slope body 20 is integrally formed at both ends of the inner bottom wall of the supporting bottom box 3 for the first cleaning dust shoveling head 21 of the cleaning push plate 15 to slide centripetally.

[0041] In this embodiment, the inner bottom wall of the transformer box 2 has a dust discharge hole for discharging dust into the supporting bottom box 3. When the hydraulic lifting rod 11 drives the extended fixed vertical rod 10 to descend and drives the rectangular lifting frame 4 to descend, the rectangular lifting frame 4 drives the L-type pressing rod 13 to slide longitudinally in the longitudinal through grooves provided on the outer walls on both sides of the transformer box 2, so that the end of the L-type pressing rod 13 located in the transformer box 2 drives the lifting and tilting sliding rod 14 to descend. When the lifting and tilting sliding rod 14 descends to the position abutting against the inner bottom wall of the supporting bottom box 3, the hinge notch 23, the hinge protrusion 24, and the hinged cooperation of the pin shaft are engaged. Under the action, the two lifting and tilting sliding rods 14 are tilted centripetally, and the rectangular lifting frame 4 and the L-pressing rod 13 continue to descend, so that the lifting and tilting sliding rods 14 push the cleaning push plate 15 to move toward the dust discharge port 19, and the descending dust is shoveled and pushed to the dust discharge port 19 by the action of the first cleaning dust shovel head 21 and the second cleaning dust shovel head 22, so that the dust is discharged from the dust discharge port 19, which helps to centrally clean the dust that has fallen inside the transformer box 2, thereby improving the cleanliness and reducing the short circuit caused by dust particles floating in the transformer box 2, thereby increasing the service life of the transformer.

[0042] In this embodiment, support frame plates 16 for installing electronic devices are welded to the inner walls on both sides of the support base box 3, and a first activity space 17 for the movement of the lifting and tilting sliding rod is provided between the two support frame plates 16, and a second activity space 18 for the movement of the cleaning push plate 15 is provided at the opposite ends of the two support frame plates 16.

[0043] In this embodiment, a shock-absorbing and buffering mechanism is provided on the top surface of each movable support plate 6, and the shock-absorbing and buffering mechanism includes a shock-absorbing and buffering damper 27 and a compression spring member 28 sleeved on the peripheral side of the shock-absorbing and buffering damper 27. The top surface of the movable support plate 6 is symmetrically provided with a plurality of groove members 26 for installing the shock-absorbing and buffering damper 27 and the compression spring member 28. The top ends of the shock-absorbing and buffering damper 27 and the compression spring member 28 are elastically abutted against the bottom surface of the supporting bottom box 3. The cooperation of the shock-absorbing and buffering damper 27 and the compression spring member 28 can assist in shock-absorbing and buffering the transformer box 2, thereby further improving the service life of the transformer and reducing damage to the line due to bumps and vibrations.

[0044] In this embodiment, a PLC for controlling the opening and closing of the hydraulic lifting rod 11 is provided in the transformer box 2. The PLC model can be selected according to actual needs. In the utility model, the PLC model is S7-200, which has the advantages of high reliability, strong anti-interference ability and easy maintenance.

[0045] How it works

[0046] In the self-cleaning oil-immersed transformer, the hydraulic lifting rod 11 drives the extended fixed vertical rod 10 to descend, so that the two extended fixed vertical rods 10 can drive the rectangular lifting frame 4 to descend, so that each cleaning brush 7 can descend between two adjacent heat dissipation fins 5, and the cleaning brush 7 can be driven by the downward drive of the hydraulic lifting rod 11 to clean up the dust or impurities hidden between the heat dissipation fins 5;

[0047] When the hydraulic lifting rod 11 drives the extended fixed vertical rod 10 to descend and drives the rectangular lifting frame 4 to descend, the rectangular lifting frame 4 drives the L down-pressing rod 13 to slide longitudinally in the longitudinal through grooves opened on the outer walls on both sides of the transformer box 2, and one end of the L down-pressing rod 13 located in the transformer box 2 drives the lifting and tilting sliding rod 14 to descend. When the lifting and tilting sliding rod 14 descends to the position abutting the inner bottom wall of the supporting bottom box 3, under the hinged cooperation of the hinged notch 23, the hinged protrusion 24 and the pin shaft, the two lifting and tilting sliding rods 14 tilt centripetally, and the rectangular lifting frame 4 and the L down-pressing rod 13 continue to descend. The lifting and tilting sliding rod 14 pushes the cleaning push plate 15 to move toward the dust discharge port 19. Under the action of the first cleaning dust shoveling head 21 and the second cleaning dust shoveling head 22, the dust is shoveled and pushed to the dust discharge port 19, so that the dust is discharged from the dust discharge port 19.

[0048] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A self-cleaning oil-immersed transformer, comprising an oil-immersed transformer assembly, characterized in that: The oil-immersed transformer assembly comprises a transformer box, a support bottom box fixed to the bottom surface of the transformer box, and a movable support plate fixed to the bottom surface of the support bottom box for support; Inverted L-shaped vertical plates are symmetrically installed on both sides of the top surface of the transformer box, and a hydraulic lifting rod is longitudinally installed on the bottom surface of the free end of each L-shaped vertical plate. A rectangular lifting frame covering the outside of the heat dissipation fins on the peripheral side of the transformer box is connected below the lifting end of the hydraulic lifting rod, and the inner wall of the rectangular lifting frame is evenly installed with cleaning brushes placed between two adjacent heat dissipation fins; L-type downward pressure rods with free ends extending into the transformer box are installed on the bottom surfaces of both sides of the rectangular lifting frame. The bottom of the free end of each L-type downward pressure rod is hinged with a lifting and tilting sliding rod. The bottom end of the lifting and tilting sliding rod is connected to a cleaning push plate for pushing and cleaning dust on the bottom wall of the supporting bottom box. A dust exhaust port is opened in the middle of the bottom wall of the supporting bottom box.

2. A self-cleaning oil-immersed transformer according to claim 1, characterized in that: The inner walls on both sides of the supporting bottom box are welded with supporting frame plates for mounting electronic devices; A first activity space for the lifting, tilting and sliding rod to move is provided between the two support frame plates; The opposite ends of the two support frame plates are each provided with a second activity space for the cleaning push plate to move.

3. A self-cleaning oil-immersed transformer according to claim 2, characterized in that: One end of each L-type push rod extending into the transformer box is provided with a hinge notch, and the top end of the lifting and tilting sliding rod is connected with a hinge protrusion hinged to the hinge notch.

4. A self-cleaning oil-immersed transformer according to claim 3, characterized in that: The bottom ends of the two cleaning push plates are opposite to each other on one side and are provided with a first cleaning dust shoveling head, and the side faces of the two cleaning push plates opposite to each other are provided with a second cleaning dust shoveling head in a centripetal direction.

5. A self-cleaning oil-immersed transformer according to claim 4, characterized in that: Both ends of the inner bottom wall of the supporting bottom box are integrally formed with arc-shaped slope bodies for the first cleaning dust scraping head of the cleaning push plate to slide centripetally.

6. A self-cleaning oil-immersed transformer according to claim 5, characterized in that: The bottom end of each hydraulic lifting rod is fixedly connected to an extended fixed vertical rod, and the extended fixed vertical rod is fixedly installed on the top surface of the rectangular lifting frame.

7. A self-cleaning oil-immersed transformer according to claim 6, characterized in that: The two movable support plates are symmetrically arranged and auxiliary movable wheels are installed on both sides of the bottom surface thereof. The top surface of each movable support plate is provided with a shock absorbing and buffering mechanism.

8. The self-cleaning oil-immersed transformer according to claim 7, characterized in that: The shock absorbing and buffering mechanism comprises a shock absorbing and buffering damper and a compression spring member sleeved on the peripheral side of the shock absorbing and buffering damper.

9. The self-cleaning oil-immersed transformer according to claim 8, characterized in that: The top surface of the movable support plate is symmetrically provided with a plurality of grooves for installing shock-absorbing buffer dampers and compression spring members; The top ends of the shock-absorbing buffer and the compression spring element are elastically in contact with the bottom surface of the supporting bottom box.

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