Resin insulation dry-type transformer

Abstract

The utility model provides a resin insulation dry-type transformer. The resin insulation dry-type transformer comprises a resin insulation dry-type transformer body, two movable groove plates are fixedly installed at the bottom of the resin insulation dry-type transformer body, two fixed groove plates are arranged below the resin insulation dry-type transformer body, the two movable groove plates are located in the two fixed groove plates respectively, and the two movable groove plates are located in the two fixed groove plates respectively. Two first long-strip-shaped sliding openings are formed in the inner walls of the two sides of the fixed groove plate correspondingly, first sliding blocks are slidably installed in the two first long-strip-shaped sliding openings correspondingly, the ends, close to each other, of the two first sliding blocks are fixedly connected with the movable groove plates correspondingly, and cylinders are rotationally installed on the inner walls of the tops of the two movable groove plates correspondingly; a U-shaped frame is arranged on the cylinder, a rolling wheel is rotationally installed in the U-shaped frame, and a locking mechanism is arranged on the fixing groove plate. The resin insulation dry-type transformer provided by the utility model has the advantages of convenience in maintenance and reliability in supporting the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a resin-insulated dry-type transformer. Background Art

[0002] A resin-insulated dry-type transformer is a dry-type transformer using epoxy resin as an insulating material. The high- and low-voltage windings are wound with copper strips, and epoxy resin is poured and cured in a vacuum to form a high-strength fiberglass body structure. The epoxy resin dry-type transformer has the characteristics of good electrical performance, strong lightning impulse resistance, and strong short-circuit resistance.

[0003] Although the resin-insulated dry-type transformer uses epoxy resin as an insulating material, it can reduce a certain volume and weight. However, due to the use of a large number of copper strips, the overall mass is still relatively heavy. The base of the existing resin-insulated dry-type transformer has a relatively simple structure. Usually, the base is directly fixed in the transformer cabinet by bolts. When the resin-insulated dry-type transformer needs to be repaired, due to the narrow space in the transformer cabinet, it will bring a lot of inconvenience to the maintenance personnel. At present, if the transformer needs to be removed from the cabinet, a lifting device such as a forklift is required. In this case, it is necessary to wait for the lifting device to enter the site and complete the operation, which is time-consuming.

[0004] Therefore, it is necessary to provide a new resin-insulated dry-type transformer to solve the above technical problems. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a resin-insulated dry-type transformer that can be moved outside the cabinet for repair, is convenient for repair, and supports the transformer reliably during the movement.

[0006] To solve the above technical problems, the resin-insulated dry-type transformer provided by the utility model includes: a resin-insulated dry-type transformer body, two moving groove plates are fixedly installed at the bottom of the resin-insulated dry-type transformer body, two fixed groove plates are arranged below the resin-insulated dry-type transformer body, the two moving groove plates are respectively located in the two fixed groove plates, two first long sliding openings are opened on both inner walls of the fixed groove plates, two first sliders are slidably installed in the two first long sliding openings, one ends of the two first sliders close to each other are fixedly connected to the moving groove plates, cylinders are rotatably installed on the top inner walls of the two moving groove plates, a U-shaped frame is arranged on the cylinder, a roller is rotatably installed in the U-shaped frame, and a locking mechanism is arranged on the fixed groove plate, and the locking mechanism is used to lock the first slider to prevent the moving groove plate from moving randomly.

[0007] Preferably, a plurality of rollers are rotatably installed on both inner walls of the moving groove plate, and the plurality of rollers are equidistantly distributed, and the bottom of the moving groove plate is in contact with the plurality of rollers.

[0008] Preferably, the locking mechanism includes four fixing plates, two fixed sliding rods, a moving frame, two first springs and two first bolts. The four fixing plates are all fixedly installed on the back of the fixed groove plate. The two fixed sliding rods are respectively fixedly installed between the corresponding two fixing plates. The moving frame is slidably sleeved on the two fixed sliding rods. The two first springs are respectively sleeved on the two fixed sliding rods. The top ends of the two first springs are respectively fixedly connected to the corresponding fixing plates. The bottom ends of the two first springs are both fixedly connected to the moving frame. The two first bolts are respectively fixedly installed at both ends of the moving frame. A first slot is formed in the top of the first slider. The bottom end of the first bolt extends into the first slot.

[0009] Preferably, two vertical seats are fixedly installed on the inner wall of the top of the moving groove plate. The same rotating block is rotatably installed on the two vertical seats. The cylinder is fixedly installed on the rotating block.

[0010] Preferably, an internally threaded sleeve is rotatably installed in the cylinder. A threaded rod is penetrated and threadedly installed in the internally threaded sleeve. The U-shaped frame is fixedly installed at one end of the threaded rod outside the cylinder. Two second long sliding openings are formed in the outer wall of the cylinder. Two second sliders are fixed on the threaded rod. The two second sliders both penetrate through the corresponding second long sliding openings and are slidably connected to the inner walls of the corresponding second long sliding openings.

[0011] Preferably, a second slot is formed in the bottom of the rotating block. A limiting block is fixedly installed on the inner wall of the top of the moving groove plate. A second bolt is penetrated and slidably installed on the limiting block. An end plate is fixedly installed at one end of the second bolt away from the rotating block. A second spring is sleeved on the second bolt. One end of the second spring is fixedly connected to the end plate, and the other end is fixedly connected to the limiting block.

[0012] Compared with the related art, the resin-insulated dry-type transformer provided by the present utility model has the following beneficial effects:

[0013] The utility model provides a resin-insulated dry-type transformer. Through the arrangement of a fixed slot plate, a movable slot plate, a first slider and a locking mechanism, under normal conditions, the locking mechanism locks the movable slot plate, which can prevent the resin-insulated dry-type transformer body from moving randomly. When the resin-insulated dry-type transformer body needs to be overhauled, after unlocking the movable slot plate through the locking mechanism, the resin-insulated dry-type transformer body can be pushed outside the cabinet, which greatly facilitates the overhaul work of the resin-insulated dry-type transformer body. Through the arrangement of components such as a rotating block, a cylinder, an internally threaded sleeve, a roller, a limiting block, a second bolt, an end plate, a second spring, etc., after the resin-insulated dry-type transformer body is pushed to a certain distance outside the cabinet, the cylinder can automatically rotate to a vertical state under the action of gravity and can be limited by the second bolt. Then, by rotating the internally threaded sleeve clockwise, the roller can be made to touch the ground, so as to assist in supporting the movable slot plate, and the roller can roll, making the resin-insulated dry-type transformer body more reliable and stable to be pushed out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a preferred embodiment of the resin-insulated dry-type transformer provided by the utility model;

[0015] Figure 2 is Figure 1 an assembly schematic diagram of the fixed slot plate and the movable slot plate shown in the first perspective;

[0016] Figure 3 is Figure 1 an assembly schematic diagram of the fixed slot plate and the movable slot plate shown in the second perspective;

[0017] Figure 4 is Figure 1 a schematic structural diagram of the fixed slot plate shown;

[0018] Figure 5 is Figure 1 a schematic structural diagram of the movable slot plate shown;

[0019] Figure 6 is Figure 3 a schematic structural diagram of the locking mechanism shown;

[0020] Figure 7 is Figure 1 a schematic sectional view of the movable slot plate shown;

[0021] Figure 8 is Figure 7 a schematic diagram of the cylinder in a vertical state shown;

[0022] Figure 9 is Figure 7 a schematic structural diagram of the cylinder shown;

[0023] Figure 10 is Figure 7 the structural schematic diagram of the threaded rod shown

[0024] Figure 11 is Figure 7 the structural schematic diagram of the limit block shown

[0025] Reference numerals in the figure: 1, resin-insulated dry-type transformer body; 2, fixed groove plate; 3, movable groove plate; 4, first slider; 5, fixed plate; 6, fixed slide bar; 7, movable frame; 8, first spring; 9, first bolt; 10, roller; 11, rotating block; 12, cylinder; 13, internally threaded sleeve; 14, threaded rod; 15, U-shaped frame; 16, roller; 17, limit block; 18, second bolt; 19, end plate; 20, second spring; 201, first long sliding opening; 401, first slot; 1101, second slot. Specific embodiments

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Please refer to Figures 1-11, a resin-insulated dry-type transformer includes: a resin-insulated dry-type transformer body 1. The structure of the resin-insulated dry-type transformer body 1 adopts the conventional design of an existing epoxy resin-insulated dry-type transformer. Two moving groove plates 3 are fixedly installed at the bottom of the resin-insulated dry-type transformer body 1. Two fixed groove plates 2 are arranged below the resin-insulated dry-type transformer body 1. Four fixing ears are welded on the fixed groove plates 2, and mounting holes are provided on the fixing ears for fixing the two fixed groove plates 2 on the crossbar in the transformer cabinet. The two moving groove plates 3 are respectively located in the two fixed groove plates 2. Two first long sliding openings 201 are provided on both inner walls of the two fixed groove plates 2. Two first sliders 4 are slidably installed in the two first long sliding openings 201. One ends of the two first sliders 4 close to each other are fixedly connected to the moving groove plates 3. Through the above settings, the moving groove plates 3 can move outside the fixed groove plates 2. Cylinders 12 are rotatably installed on the top inner walls of the two moving groove plates 3. Specifically, two vertical seats are fixedly installed on the top inner wall of the moving groove plate 3, and the same rotating block 11 is rotatably installed on the two vertical seats. The cylinder 12 is fixedly installed on the rotating block 11. A U-shaped frame 15 is provided on the cylinder 12, and a roller 16 is rotatably installed in the U-shaped frame 15. When the resin-insulated dry-type transformer body 1 needs to be repaired, after pushing the resin-insulated dry-type transformer body 1 out of the transformer cabinet by a certain part, the cylinder 12 is rotated to the vertical state to assist in supporting the resin-insulated dry-type transformer body 1. A locking mechanism is provided on the fixed groove plate 2, and the locking mechanism is used to lock the first slider 4 to prevent the moving groove plate 3 from moving randomly. Specifically, the locking mechanism includes four fixing plates 5, two fixed sliding rods 6, a moving frame 7, two first springs 8 and two first bolts 9. The four fixing plates 5 are all fixedly installed on the back of the fixed groove plate 2. The two fixed sliding rods 6 are respectively fixedly installed between the corresponding two fixing plates 5. The moving frame 7 is slidably sleeved on the two fixed sliding rods 6. The two first springs 8 are respectively sleeved on the two fixed sliding rods 6. The top ends of the two first springs 8 are respectively fixedly connected to the corresponding fixing plates 5. The bottom ends of the two first springs 8 are both fixedly connected to the moving frame 7. The two first bolts 9 are respectively fixedly installed at both ends of the moving frame 7. A first slot 401 is provided at the top of the first slider 4. The bottom end of the first bolt 9 extends into the first slot 401. A hand block is provided on the moving frame 7. When the moving frame 7 is lifted upward through the hand block, the two first bolts 9 can be driven to move upward, and the two first bolts 9 will withdraw from the corresponding first slots 401, thus unlocking the two first sliders 4, and the moving groove plate 3 can be pushed.

[0028] In this embodiment, in order to reduce the resistance suffered by the moving slot plate 3 during the moving process and ensure reliable support for the moving slot plate 3, a plurality of rollers 10 are rotatably installed on the inner walls of both sides of the moving slot plate 3, and the plurality of rollers 10 are evenly distributed. The bottom of the moving slot plate 3 is in contact with the plurality of rollers 10, and the outer wall of the roller 10 is also in contact with the bottom inner wall of the fixed slot plate 2.

[0029] In this embodiment, in order to be able to adjust the position of the roller 16 so that the roller 16 can touch the ground, an internally threaded sleeve 13 is rotatably installed in the cylinder 12. A threaded rod 14 is penetrated and threadedly installed in the internally threaded sleeve 13. A U-shaped frame 15 is fixedly installed at one end of the threaded rod 14 located outside the cylinder 12. Two second long strip sliding openings are formed on the outer wall of the cylinder 12. Two second sliders are fixed on the threaded rod 14. Both second sliders penetrate through the corresponding second long strip sliding openings and are slidably connected to the inner walls of the corresponding second long strip sliding openings. A hexagonal sleeve block is fixedly sleeved on the outer wall of the internally threaded sleeve 13. After the cylinder 12 is rotated to the vertical state, by clamping the hexagonal sleeve block with a wrench, the internally threaded sleeve 13 can be rotated. During the process of the internally threaded sleeve 13 rotating clockwise, it will drive the threaded rod 14 to gradually move out of the cylinder 12. Driven by the threaded rod 14, finally the roller 16 can touch the ground.

[0030] In this embodiment, when the resin-insulated dry-type transformer body 1 is pushed out of the transformer cabinet, in order to be able to stably maintain the vertical state of the cylinder 12, a second slot 1101 is formed at the bottom of the rotating block 11. A limiting block 17 is fixedly installed on the top inner wall of the moving slot plate 3. When the cylinder 12 is rotated to the vertical state, the rotating block 11 will abut against the limiting block 17. A second pin 18 is penetrated and slidably installed on the limiting block 17. An end plate 19 is fixedly installed at one end of the second pin 18 away from the rotating block 11. A second spring 20 is sleeved on the second pin 18. One end of the second spring 20 is fixedly connected to the end plate 19, and the other end is fixedly connected to the limiting block 17. The second pin 18 is adapted to the second slot 1101. After the second pin 18 is inserted into the second slot 1101, the rotating block 11 can be limited, so as to keep the cylinder 12 vertical.

[0031] The working principle of the resin-insulated dry-type transformer provided by the present utility model is as follows:

[0032] During use, the resin-insulated dry-type transformer body 1 is fixed in the transformer cabinet through a plurality of ear blocks (used in cooperation with bolts and nuts) on the fixed slot plate 2;

[0033] When the resin-insulated dry-type transformer body 1 needs to be overhauled, lift the two moving frames 7 upward. The moving frames 7 will drive the first pin 9 to rise. After the moving frames 7 rise to a certain extent, the first pin 9 will completely withdraw from the corresponding first slot 401. In this way, the locking of the two moving slot plates 3 is released. Then, the resin-insulated dry-type transformer body 1 can be pushed out of the cabinet. The resin-insulated dry-type transformer body 1 drives the two moving slot plates 3 to move. When the moving slot plates 3 move outwards a certain distance, the cylinder 12, the rollers 16, the rotating block 11, etc. will all be completely outside the cabinet, and will automatically rotate counterclockwise under the action of gravity. During the counterclockwise rotation of the rotating block 11, a backward thrust will be given to the second pin 18, causing the second pin 18 to slide backward automatically, and the second spring 20 will be stretched. When the rotating block 11 rotates to the vertical state, it will contact the limit block 17. At this time, the second slot 1101 will also be axially aligned with the second pin 18. Under the pulling force of the second spring 20, the second pin 18 will perform a reset movement and thus insert into the second slot 1101. In this way, the cylinder 12 can be kept in the vertical state. Then, turn the internal thread sleeve 13 clockwise with a wrench. During the clockwise rotation of the internal thread sleeve 13, the threaded rod 14 will be driven to move downward. Driven by the threaded rod 14, the rollers 16 will finally contact the ground. In this way, the part of the moving slot plate 3 pushed out of the cabinet will not be suspended and can obtain reliable auxiliary support. After that, the resin-insulated dry-type transformer body 1 can be pushed outwards continuously. The two rollers 16 and the ground are in rolling friction, so the resistance is very small. Therefore, the resin-insulated dry-type transformer body 1 can continue to move out of the cabinet smoothly.

[0034] Compared with the related technology, the resin-insulated dry-type transformer provided by the present utility model has the following beneficial effects:

[0035] The utility model provides a resin-insulated dry-type transformer. Through the arrangement of a fixed slot plate 2, a movable slot plate 3, a first slider 4 and a locking mechanism, under normal conditions, the locking mechanism locks the movable slot plate 3, which can prevent the resin-insulated dry-type transformer body 1 from moving randomly. When the resin-insulated dry-type transformer body 1 needs to be overhauled, after unlocking the movable slot plate 3 through the locking mechanism, the resin-insulated dry-type transformer body 1 can be pushed outside the cabinet, greatly facilitating the overhaul work of the resin-insulated dry-type transformer body 1. Through the arrangement of components such as a rotating block 11, a cylinder 12, an internally threaded sleeve 13, a roller 16, a limiting block 17, a second bolt 18, an end plate 19, a second spring 20, etc., after the resin-insulated dry-type transformer body 1 is pushed to a certain distance outside the cabinet, the cylinder 12 can automatically rotate to a vertical state under the action of gravity and can be limited by the second bolt 18. Then, by rotating the internally threaded sleeve 13 clockwise, the roller 16 can be made to touch the ground, thereby assisting in supporting the movable slot plate 3, and the roller 16 can roll, enabling the resin-insulated dry-type transformer body 1 to be pushed out more reliably and stably.

[0036] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A resin-insulated dry-type transformer, comprising a resin-insulated dry-type transformer body, characterized in that: Two movable slot plates are fixedly installed at the bottom of the resin-insulated dry-type transformer body, and two fixed slot plates are arranged below the resin-insulated dry-type transformer body. The two movable slot plates are respectively located in the two fixed slot plates, and two first long sliding openings are provided on the inner walls on both sides of the fixed slot plates. First sliders are slidably installed in the two first long sliding openings, and the ends of the two first sliders close to each other are fixedly connected to the movable slot plates. Cylinders are rotatably installed on the top inner walls of the two movable slot plates, and a U-shaped frame is provided on the cylinder. A roller is rotatably installed in the U-shaped frame. A locking mechanism is provided on the fixed slot plate, and the locking mechanism is used to lock the first slider to prevent the movable slot plate from moving at will.

2. The resin insulated dry-type transformer according to claim 1, characterized in that: A plurality of rollers are rotatably mounted on the inner walls of both sides of the movable slot plate, and the plurality of rollers are distributed at equal intervals, and the bottom of the movable slot plate is in contact with the plurality of rollers.

3. The resin insulated dry-type transformer according to claim 1, characterized in that: The locking mechanism includes four fixed plates, two fixed slide bars, a movable frame, two first springs and two first latches. The four fixed plates are fixedly mounted on the back of the fixed slot plate, the two fixed slide bars are fixedly mounted between the corresponding two fixed plates, the movable frame is slidably mounted on the two fixed slide bars, the two first springs are respectively mounted on the two fixed slide bars, the top ends of the two first springs are fixedly connected to the corresponding fixed plates, the bottom ends of the two first springs are fixedly connected to the movable frame, the two first latches are respectively fixedly mounted on the two ends of the movable frame, a first slot is opened on the top of the first slider, and the bottom end of the first latch extends into the first slot.

4. The resin insulated dry-type transformer according to claim 3, characterized in that: Two vertical seats are fixedly mounted on the top inner wall of the movable slot plate, the same rotating block is rotatably mounted on the two vertical seats, and the cylinder is fixedly mounted on the rotating block.

5. The resin-insulated dry-type transformer according to claim 4, characterized in that: An internal threaded sleeve is rotatably installed in the cylinder, a threaded rod is passed through and threadedly installed in the internal threaded sleeve, the U-shaped frame is fixedly installed on one end of the threaded rod located outside the cylinder, two second long slides are provided on the outer wall of the cylinder, two second sliders are fixed on the threaded rod, both of the two second sliders pass through the corresponding second long slides and are slidably connected with the inner wall of the corresponding second long slide.

6. The resin-insulated dry-type transformer according to claim 5, characterized in that: A second slot is provided at the bottom of the rotating block, a limit block is fixedly installed on the top inner wall of the movable slot plate, a second latch passes through and is slidably installed on the limit block, an end plate is fixedly installed on the end of the second latch away from the rotating block, a second spring is sleeved on the second latch, one end of the second spring is fixedly connected to the end plate, and the other end is fixedly connected to the limit block.

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