Dry-type transformer anti-seismic structure

Abstract

The application relates to the technical field of transformers, in particular to an anti-seismic structure of a dry-type transformer, which comprises an anti-seismic plate and is also provided with a fixing mechanism for fixing the dry-type transformer on the anti-seismic plate, the fixing mechanism comprises a sliding plate one slidingly installed on the upper end of the anti-seismic plate; in the application, when the two inclined push plates and the stabilizing frame are close to each other, the inserted plate is inserted into the insertion groove, the two inclined surfaces push the clamping plate to slide upward on the clamping plate two and self-adaptively extrude the spring two, after the inserted plate is completely inserted into the insertion groove and stops, the clamping plate is reset under the action of the spring two and is inserted into the stabilizing groove on the inserted plate and the insertion groove, the loosening of the two clamping plates one is effectively prevented, the loosening of the two clamping plates two is further prevented, the stable clamping and fixing of the dry-type transformer are guaranteed, and the dry-type transformer can be effectively absorbed by the main damper when the dry-type transformer is vibrated in the subsequent work, so that the anti-seismic effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more particularly to a seismic-resistant structure for dry-type transformers. Background Technology

[0002] Dry-type transformers mainly consist of a core made of silicon steel sheets and coils cast with epoxy resin. Insulating cylinders are placed between the high-voltage and low-voltage coils to increase electrical insulation, and spacers support and constrain the coils. All fasteners connecting the components have anti-loosening properties. Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery, and other applications. Simply put, a dry-type transformer is a transformer whose core and windings are not immersed in insulating oil.

[0003] For example, patent application number CN202411726512.6 discloses "a seismic support structure and method for a dry-type transformer", which includes a transformer body, a plate fixedly installed at the bottom of the transformer body, a protective shell slidably installed at the bottom of the plate, and a protective device, a buffer device and a stabilizing device provided inside the protective shell.

[0004] However, in the aforementioned patent, the bottom of the transformer body is fixedly mounted on a flat plate, which usually requires multiple bolts for fixing. This not only makes the fixing process cumbersome but also makes disassembly difficult, affecting maintenance. Furthermore, alignment adjustments are required before fixing, which also affects work efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in the prior art, the bottom of the transformer body is fixedly installed on a flat plate, which usually requires multiple bolts for fixing. This not only makes the fixing process cumbersome, but also makes it difficult to disassemble and affect maintenance. Furthermore, the alignment adjustment is required before fixing, which also affects work efficiency. Therefore, this invention proposes a seismic-resistant structure for dry-type transformers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A seismic-resistant structure for a dry-type transformer includes a seismic-resistant plate and a fixing mechanism for fixing the dry-type transformer on the seismic-resistant plate. The fixing mechanism includes a sliding plate 1 that is slidably installed on the upper end of the seismic-resistant plate, a sliding plate 2 that is slidably installed on the upper end of the sliding plate 1, a clamping plate 1 that is slidably installed through the left and right sides of the seismic-resistant plate, and a clamping plate 2 that is slidably installed on the front and rear sides of the upper end of the seismic-resistant plate. It is also equipped with an anti-seismic mechanism for resisting the seismic activity of the dry-type transformer on the anti-seismic plate. A main damper is fixedly installed at each of the four corners of the lower end of the anti-seismic plate, and a base plate is fixedly installed at the lower end of the main damper.

[0007] Preferably, a screw is threadedly installed on the lower side of the clamping plate, and a motor is provided at the right end of the screw. The right end of the motor is fixedly installed on the anti-vibration plate.

[0008] Preferably, spring 1 is fixedly installed at the close ends of the two clamping plates, and vertical plate is fixedly installed at the close ends of the spring 1, with the lower end of the vertical plate fixedly installed on the anti-vibration plate.

[0009] Preferably, the two ends of the clamping plate on the right side are each fixedly installed with a slanted push plate corresponding to the clamping plate on the left side, and a stabilizing frame is provided on the left side of each slanted push plate. The stabilizing frame is fixedly connected to the two ends of the clamping plate on the left side.

[0010] Preferably, each of the inclined push plates has a fixed insert plate on its left end, and the right end of the stabilizer has a slot corresponding to the insert plate. Both the insert plate and the upper end of the stabilizer have a stabilizing groove, and the ends of the two clamping plates that are far apart from each other are slidably installed with a clamping plate corresponding to the stabilizing groove.

[0011] Preferably, each of the card plates has a second spring fixedly installed at its upper end, the upper end of the second spring fixedly installed on the second clamping plate, and the ends of the stabilizer and the insert plate that are close to each other have inclined surfaces corresponding to the card plates.

[0012] Preferably, each of the card plates has a limiting groove at its far ends, and each of the inclined push plates has a limiting plate slidably installed in the corresponding limiting groove at its far ends.

[0013] Preferably, a second screw is rotatably mounted on the right end of the limiting plate, and a fixing plate is threaded onto the second screw. One end of the fixing plate is fixedly mounted on the inclined push plate.

[0014] Preferably, each of the main dampers is slidably mounted with an inspection door, and each inspection door is abutted against and fitted with a limiting plate. Each limiting plate is slidably mounted with a guide rod, one end of which is fixedly mounted on the main damper. Furthermore, each of the main dampers is fixedly mounted with a bracket on the outer side corresponding to the limiting plate.

[0015] Preferably, each of the four corners of the lower side of the anti-seismic plate is provided with a spare damper, and each spare damper is provided with a hydraulic cylinder at its lower end. The lower end of each hydraulic cylinder is fixedly installed on the main damper.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the dry-type transformer is hoisted onto the sliding plate 2. The motor is started to drive the screw 1 to rotate. The screw 1 drives the clamping plates 1 on both sides to move closer together, gradually clamping and fixing the left and right sides of the dry-type transformer. At the same time, the clamping plates 1 on both sides also drive the inclined push plates and the stabilizing frame on both sides to move closer together. The inclined push plates push the clamping plates 2 on both sides, causing the clamping plates 2 on both sides to move closer together, clamping and fixing the front and rear sides of the dry-type transformer. Through the adaptive sliding of the sliding plates 1 and 2, the situation where the lower end of the dry-type transformer is difficult to move on the anti-vibration plate can be avoided, ensuring that the dry-type transformer can be clamped smoothly. There is no need to manually adjust the dry-type transformer to be placed in the center position, which improves work efficiency and facilitates the installation, disassembly and maintenance of the dry-type transformer by the staff.

[0017] 2. In this invention, when the inclined push plates and the stabilizing frame on both sides approach each other, they will drive the insert plate to be inserted into the slot. The inclined surfaces on both sides will push the clamping plate, causing it to slide upward on the second clamping plate, and adaptively compress the second spring until the insert plate is completely inserted into the slot. After that, the clamping plate will be reset under the action of the second spring and inserted into the stabilizing groove on the insert plate and the slot. This effectively prevents the first clamping plate on both sides from becoming loose, which in turn prevents the second clamping plate on both sides from becoming loose. This ensures the stable clamping and fixing of the dry-type transformer, which is beneficial for the main damper to effectively absorb vibrations during the subsequent operation of the dry-type transformer, thus achieving the effect of shock resistance.

[0018] 3. In this invention, rotating the screws on both sides causes the limiting plates on both sides to move to the left, so that they are inserted into the limiting groove. This avoids the clamping plate being affected by external forces, which would cause it to move upward. This provides protection for the clamping plate and effectively ensures the stable clamping and fixing of the dry-type transformer by the clamping plates one and two.

[0019] 4. In this invention, the limiting plate is pulled outward to slide on the guide rod, and the limiting plate moves out from the maintenance door. The hydraulic cylinder is activated to push the backup damper up, so that it is supported at the four corners of the lower end of the anti-vibration plate. Opening the maintenance door facilitates the replacement and maintenance of the parts in the main damper. The backup damper can replace the main damper in a short time to perform anti-vibration work on the dry-type transformer on the anti-vibration plate. When the main damper is not needed for maintenance, the dry-type transformer cannot perform anti-vibration work, which would lead to the need to shut down the dry-type transformer. This ensures that the dry-type transformer can work uninterruptedly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall left-side three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the overall bottom-view three-dimensional structure of the present invention; Figure 4 For the present invention Figure 1 Schematic diagram of the structure at point A; Figure 5 For the present invention Figure 1 Schematic diagram of the structure at point B; Figure 6 For the present invention Figure 2 Schematic diagram of the structure at point C; Figure 7 For the present invention Figure 2 Schematic diagram of the structure at point D; Figure 8 For the present invention Figure 3 Schematic diagram of the structure at point E; In the diagram: 1. Seismic resistant plate; Fixing mechanism: 2. Slide plate one; 3. Slide plate two; 4. Clamping plate one; 5. Screw one; 6. Motor; 7. Clamping plate two; 8. Spring one; 9. Vertical plate; 10. Inclined push plate; 11. Stabilizer; 12. Insert plate; 13. Slot; 14. Stabilizing groove; 15. Clamping plate; 16. Spring two; 17. Inclined surface; 18. Limiting groove; 19. Limiting plate; 20. Screw two; 21. Fixing plate; Seismic resistance mechanism: 22. Main damper; 23. Base plate; 24. Inspection door; 25. Limiting plate; 26. Guide rod; 27. Bracket; 28. Spare damper; 29. ​​Hydraulic cylinder. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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 invention 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 invention.

[0023] Reference Figures 1-8A seismic-resistant structure for a dry-type transformer includes a seismic-resistant plate 1 and a fixing mechanism for fixing the dry-type transformer on the seismic-resistant plate 1. The fixing mechanism includes a sliding plate 2 slidably mounted on the upper end of the seismic-resistant plate 1, a sliding plate 3 slidably mounted on the upper end of the sliding plate 2, clamping plates 4 slidably mounted through the left and right sides of the seismic-resistant plate 1, and clamping plates 7 slidably mounted on the front and rear sides of the upper end of the seismic-resistant plate 1. A screw 5 is threaded onto the lower side of the clamping plate 4, and a motor 6 is provided at the right end of the screw 5. The right end of the motor 6 is fixedly mounted on the seismic-resistant plate 1. Springs 8 are fixedly mounted at the close ends of the clamping plates 7, and vertical plates 9 are fixedly mounted at the close ends of the springs 8. The lower ends of the vertical plates 9 are fixedly mounted on the seismic-resistant plate 1. Inclined push plates 10 are fixedly mounted at the front and rear ends of the clamping plates 14 on the right side, corresponding to the clamping plates 7. Stabilizers 11 are provided on the left side of each inclined push plate 10. The front and rear ends of the clamping plate 4 are fixedly connected. The left end of the inclined push plate 10 is fixedly installed with a plate 12. The right end of the stabilizer 11 is provided with a slot 13 corresponding to the plate 12. The upper ends of the plate 12 and the stabilizer 11 are provided with a stabilizing groove 14. The ends of the clamping plates 7 that are far apart from each other are slidably installed with a plate 15 corresponding to the stabilizing groove 14. The upper end of the plate 15 is fixedly installed with a spring 16. The upper end of the spring 16 is fixedly installed on the clamping plate 7. The ends of the stabilizer 11 and the plate 12 that are close to each other are provided with a slope 17 corresponding to the plate 15. The ends of the plate 15 that are far apart from each other are provided with a limit groove 18. The ends of the inclined push plates 10 that are far apart from each other are slidably installed with a limit plate 19 corresponding to the limit groove 18. The right end of the limit plate 19 is rotatably installed with a screw 20. The screw 20 is threaded with a fixing plate 21. One end of the fixing plate 21 is fixedly installed on the inclined push plate 10. During operation, the dry-type transformer is hoisted onto slide plate 2 3. The starting motor 6 drives screw 5 to rotate, causing the clamping plates 4 on both sides to move closer together, gradually clamping and fixing the left and right sides of the dry-type transformer. Simultaneously, the clamping plates 4 on both sides also drive the inclined push plates 10 and the stabilizing frame 11 on both sides to move closer together. The inclined push plates 10 push the clamping plates 7 on both sides, causing them to move closer together and clamping and fixing the front and rear sides of the dry-type transformer. The adaptive sliding of slide plates 2 and 3 prevents the lower end of the dry-type transformer from being difficult to move on the anti-vibration plate 1, ensuring the dry-type transformer can be smoothly clamped. This eliminates the need for manual adjustment of the dry-type transformer to a centered position, improving work efficiency and facilitating installation, disassembly, and maintenance. At the same time, when the inclined push plates 10 and the stabilizing frame 11 move closer together, they cause the insertion plate 12 to be inserted into the slot 13. The inclined surfaces 17 on both sides push the clamping plate 15, causing it to slide upward on the second clamping plate 7, and adaptively compress the second spring 16 until the insert plate 12 is fully inserted into the slot 13. Then, the clamping plate 15 will reset under the action of the second spring 16 and be inserted into the stabilizing groove 14 on the insert plate 12 and the slot 13. This effectively prevents the first clamping plate 4 on both sides from becoming loose, which in turn prevents the second clamping plate 7 on both sides from becoming loose. This ensures the stable clamping and fixing of the dry-type transformer, which is beneficial for the main damper 22 to effectively absorb vibrations during the subsequent operation of the dry-type transformer, achieving an anti-vibration effect. Rotating the second screw 20 on both sides causes the limiting plates 19 on both sides to move to the left, so that they are inserted into the limiting groove 18. This prevents the clamping plate 15 from being affected by external forces and causing it to move upward. This provides protection for the clamping plate 15 and effectively ensures the stable clamping and fixing of the dry-type transformer by the first clamping plate 4 and the second clamping plate 7.

[0024] As an embodiment of the present invention, a seismic-resistant mechanism for resisting the seismic activity of the dry-type transformer on the seismic plate 1 is also provided. A main damper 22 is fixedly installed at each of the four corners of the lower end of the seismic plate 1. A base plate 23 is fixedly installed at the lower end of the main damper 22. A maintenance door 24 is slidably installed on each of the main dampers 22. A limiting plate 25 is abutted and fitted on the outer side of each maintenance door 24. A guide rod 26 is slidably installed through each of the limiting plates 25. One end of each guide rod 26 is fixedly installed on the main damper 22. A bracket 27 is fixedly installed on the outer side of the main damper 22 corresponding to the limiting plate 25. A spare damper 28 is provided at each of the four corners of the lower side of the seismic plate 1. A hydraulic cylinder 29 is provided at the lower end of each spare damper 28. The lower end of each hydraulic cylinder 29 is fixedly installed on the main damper 22. During operation, the limiting plate 25 is pulled outward to slide on the guide rod 26, and the limiting plate 25 is moved out from the maintenance door 24. The hydraulic cylinder 29 is activated to push the backup damper 28 upward, so that it is supported at the four corners of the lower end of the anti-seismic plate 1. Opening the maintenance door 24 facilitates the replacement and maintenance of the parts in the main damper 22. The backup damper 28 can replace the main damper 22 in a short time to perform anti-seismic work on the dry-type transformer on the anti-seismic plate 1. When the main damper 22 is not under maintenance, the dry-type transformer cannot perform anti-seismic work, which would lead to the need to shut down the dry-type transformer. This ensures that the dry-type transformer can work without interruption.

[0025] Working principle: In use, the dry-type transformer is hoisted onto the sliding plate 2 3. The motor 6 is started, driving the screw 5 to rotate. The screw 5 causes the clamping plates 4 on both sides to move closer together, gradually clamping and fixing the left and right sides of the dry-type transformer. Simultaneously, the clamping plates 4 on both sides also cause the inclined push plates 10 and the stabilizing frame 11 on both sides to move closer together. The inclined push plates 10 push the clamping plates 7 on both sides, causing them to move closer together and clamping and fixing the front and rear sides of the dry-type transformer. Through the adaptive sliding of the sliding plates 2 and 3, the situation where the lower end of the dry-type transformer is difficult to move on the anti-vibration plate 1 can be avoided, ensuring the dry-type transformer's stability. The dry-type transformer can be smoothly clamped without the need for manual adjustment to place it in a centered position, improving work efficiency and facilitating the installation, disassembly, and maintenance of the dry-type transformer. Simultaneously, when the inclined push plates 10 and the stabilizer 11 on both sides approach each other, they cause the insertion plate 12 to be inserted into the slot 13. The inclined surfaces 17 on both sides push the clamping plate 15, causing it to slide upwards on the clamping plate 7, adaptively compressing the spring 16 until the insertion plate 12 is fully inserted into the slot 13. After this, the clamping plate 15 will reset under the action of the spring 16 and insert into the stabilizing groove 14 on the insertion plate 12 and the slot 13. This effectively prevents the first clamping plate 4 on both sides from loosening, which in turn would cause the second clamping plate 7 on both sides to loosen. This ensures the stable clamping and fixing of the dry-type transformer, which is beneficial for the main damper 22 to effectively absorb vibrations during subsequent operation of the dry-type transformer, achieving an anti-vibration effect. Rotating the second screw 20 on both sides drives the limiting plates 19 on both sides to move to the left, so that they are inserted into the limiting groove 18. This prevents the clamping plate 15 from being affected by external forces and causing it to move upward. This provides protection for the clamping plate 15 and effectively ensures the stable clamping and fixing of the dry-type transformer by the first clamping plate 4 and the second clamping plate 7. Pulling outward restricts... Plate 25 slides on guide rod 26, limiting plate 25 to move out from inspection door 24, hydraulic cylinder 29 is activated to push standby damper 28 up, so that it is supported at the four corners of the lower end of anti-seismic plate 1. Opening inspection door 24 is conducive to the replacement and maintenance of parts in main damper 22 by staff. The standby damper 28 can replace main damper 22 in a short time to perform anti-seismic work on dry transformer on anti-seismic plate 1. When staff do not need to perform anti-seismic work on main damper 22, the dry transformer cannot perform anti-seismic work, which would lead to the need to shut down the dry transformer. This ensures that the dry transformer can work without interruption.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A seismic-resistant structure for a dry-type transformer, comprising a seismic-resistant plate (1), characterized in that, It is also provided with a fixing mechanism for fixing the dry transformer on the seismic plate (1). The fixing mechanism includes a sliding plate one (2) that is slidably installed on the upper end of the seismic plate (1), a sliding plate two (3) that is slidably installed on the upper end of the sliding plate one (2), a clamping plate one (4) that is slidably installed through the left and right sides of the seismic plate (1), and a clamping plate two (7) that is slidably installed on the front and rear sides of the upper end of the seismic plate (1). It is also provided with a seismic resistance mechanism for resisting the seismic resistance of the dry-type transformer on the seismic plate (1). A main damper (22) is fixedly installed at the four corners of the lower end of the seismic plate (1), and a base plate (23) is fixedly installed at the lower end of the main damper (22).

2. The seismic-resistant structure for a dry-type transformer according to claim 1, characterized in that, A screw rod (5) is threaded on the lower side of the clamping plate (4). A motor (6) is provided at the right end of the screw rod (5). The right end of the motor (6) is fixedly installed on the anti-vibration plate (1).

3. The seismic-resistant structure for a dry-type transformer according to claim 1, characterized in that, Spring 1 (8) is fixedly installed at the end of each clamping plate 2 (7) that is close to each other, and vertical plate (9) is fixedly installed at the end of each spring 1 (8) that is close to each other. The lower end of vertical plate (9) is fixedly installed on the anti-vibration plate (1).

4. The seismic-resistant structure for a dry-type transformer according to claim 1, characterized in that, The two ends of the clamping plate 1 (4) on the right side are fixedly installed with inclined push plates (10) corresponding to the clamping plate 2 (7). The left side of the inclined push plate (10) is provided with a stabilizing frame (11), which is fixedly connected to the two ends of the clamping plate 1 (4) on the left side.

5. The seismic-resistant structure for a dry-type transformer according to claim 4, characterized in that, The left end of the inclined push plate (10) is fixedly installed with a plug plate (12), the right end of the stabilizer (11) is provided with a slot (13) corresponding to the plug plate (12), the upper end of the plug plate (12) and the stabilizer (11) are provided with a stabilizing groove (14), and the ends of the clamping plates (7) that are far apart from each other are slidably installed with a card plate (15) corresponding to the stabilizing groove (14).

6. The seismic-resistant structure for a dry-type transformer according to claim 5, characterized in that, The upper end of each card plate (15) is fixedly installed with a second spring (16), the upper end of the second spring (16) is fixedly installed on the second clamping plate (7), and the end of the stabilizer (11) and the insert plate (12) that are close to each other are respectively provided with a slope (17) on the card plate (15).

7. The seismic-resistant structure for a dry-type transformer according to claim 5, characterized in that, Each of the card plates (15) has a limiting groove (18) at one end that is far apart from each other, and each of the inclined push plates (10) has a limiting plate (19) slidably installed at the corresponding limiting groove (18) at one end that is far apart from each other.

8. The seismic-resistant structure for a dry-type transformer according to claim 7, characterized in that, The right end of the limiting plate (19) is rotatably mounted with a screw rod (20), and a fixing plate (21) is threaded onto the screw rod (20). One end of the fixing plate (21) is fixedly mounted on the inclined push plate (10).

9. The seismic-resistant structure for a dry-type transformer according to claim 1, characterized in that, Each of the main dampers (22) is slidably mounted with an inspection door (24). Each of the inspection doors (24) is abutted against and fitted with a limiting plate (25). Each of the limiting plates (25) is slidably mounted with a guide rod (26). One end of each guide rod (26) is fixedly mounted on the main damper (22). Each of the main dampers (22) is fixedly mounted with a bracket (27) corresponding to the limiting plate (25) on the outside of the limiting plate (25).

10. The seismic-resistant structure for a dry-type transformer according to claim 1, characterized in that, Each of the four corners of the lower side of the anti-seismic plate (1) is provided with a spare damper (28), and each spare damper (28) is provided with a hydraulic cylinder (29) at the lower end. The lower end of each hydraulic cylinder (29) is fixedly installed on the main damper (22).

Images