Oil tank assembly structure for oil-immersed transformer and oil-immersed transformer

Abstract

The utility model discloses an oil tank assembling structure for an oil-immersed transformer and the oil-immersed transformer. The oil tank assembling structure comprises an oil tank body and a support, and the support comprises an upper clamping assembly and a lower clamping assembly; the upper clamping assembly comprises a first upper clamping piece and a second upper clamping piece, and the two ends of the first upper clamping piece and the second upper clamping piece are fixedly connected through C-shaped plates correspondingly. The lower clamping assembly comprises a first lower clamping piece and a second lower clamping piece, and the two ends of the first lower clamping piece and the second lower clamping piece are fixedly connected through C-shaped plates correspondingly. The upper clamping assembly and the lower clamping assembly are fixedly connected through a plurality of connecting rods to form a frame type support. The size of the frame type support is matched with the size of an inner containing cavity of the oil tank body, a top fixing plate is arranged on the inner wall of the oil tank body, and after the frame type support provided with the coil is placed on the oil tank body, the C-shaped plate located on the upper square frame is fixed to the top fixing plate through a fastener. The oil tank assembly structure effectively prevents the transformer coil from shaking in the transportation or hoisting process, shortens the assembly time and improves the assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of transformer tanks, and more particularly to an assembly structure for an oil-immersed transformer tank and an oil-immersed transformer. Background Technology

[0002] Transformers are the main power distribution equipment in power systems. Oil-immersed transformers are installed in oil tanks filled with oil. When installing a transformer, the installation and fixation of the transformer body are very important. If the transformer body assembly structure is not good, the transformer body may shift during transportation and handling, collide with the oil tank, and cause damage to the transformer or the oil tank, resulting in transformer failure and significant economic losses.

[0003] Although the tank assembly structure plays a crucial role in the hoisting and transportation of transformer tanks, ordinary transformer tank assembly structures still have the following drawbacks: The assembly structure is overly complex. For example, patent number CN202411647808.9 describes an assembly structure that uses multiple positioning structures within the tank, such as upper positioning components, lower positioning components, positioning pins, and positioning rings, to guide and position the tank from the top and bottom, facilitating installation. However, the structure is too complex, especially since the positioning structures are located at the bottom of the tank. During manual hoisting, the bottom position of the tank cannot be aligned by observation, resulting in excessive manual intervention to lower the alignment level, prolonging assembly time and reducing assembly efficiency.

[0004] Therefore, a simple and efficient fuel tank assembly structure needs to be designed to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide an oil tank assembly structure for an oil-immersed transformer, so as to solve the problems existing in the prior art.

[0006] The second objective of this utility model is to provide an oil-immersed transformer containing the above-mentioned oil tank assembly structure.

[0007] One of the objectives of this utility model is achieved by the following technical solution: an oil tank assembly structure for an oil-immersed transformer, comprising an oil tank body and a bracket for fixing the transformer coil, wherein the bracket comprises an upper clamping assembly and a lower clamping assembly;

[0008] The upper clamping assembly includes a first upper clamp and a second upper clamp arranged in parallel. The two ends of the first upper clamp and the second upper clamp are respectively fixedly connected by a C-shaped plate to form an upper square frame. The lower clamping assembly includes a first lower clamp and a second lower clamp arranged in parallel. The two ends of the first lower clamp and the second lower clamp are respectively fixedly connected by a C-shaped plate to form a lower square frame. The upper square frame and the lower square frame are fixedly connected by several connecting rods to form a frame-type support.

[0009] The size of the frame bracket is adapted to the internal cavity size of the fuel tank body. The inner wall of the fuel tank body is provided with a top fixing plate adapted to the horizontal height position of the frame bracket. After the frame bracket with the coil is placed in the fuel tank body, the C-shaped plate of the upper square frame is fixed to the top fixing plate by fasteners.

[0010] Furthermore, the C-shaped plate located on the upper square frame has multiple vertically arranged and / or horizontally arranged mounting holes, and the top fixing plate has multiple matching mounting holes corresponding to the position and number of the mounting holes.

[0011] Furthermore, a buffer sheet is connected between the first upper clamp, the second upper clamp and the upper C-shaped plate; a buffer sheet is also connected between the first lower clamp, the second lower clamp and the lower C-shaped plate.

[0012] Furthermore, a buffer pad is provided between the lower square frame and the bottom inner wall of the fuel tank body.

[0013] Furthermore, several connecting rods are evenly distributed on the frame bracket, with each connecting rod passing between the upper clamping assembly and the lower clamping assembly. The distance and tension between the upper clamping assembly and the lower clamping assembly are adjusted by the end nut.

[0014] Furthermore, the first upper clamp, the second upper clamp, the first lower clamp, and the second lower clamp are all C-shaped plates.

[0015] Furthermore, the upper square frame is provided with multiple integrally connected lifting lugs.

[0016] Furthermore, there are four lifting lugs, which are evenly located on the outer top surfaces of the first upper clamp and the second upper clamp.

[0017] Furthermore, the first upper clamp and the second upper clamp are C-shaped plates, and reinforcing iron blocks are fixed to the inner walls of the C-shaped plates of the first upper clamp and the second upper clamp, and the reinforcing iron blocks are located below the lifting lug.

[0018] The second objective of this utility model is achieved by the following technical solution: an oil-immersed transformer, characterized in that it includes coils and an oil tank assembly structure as described above.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) The assembly structure of this oil tank improves the stability of the transformer coil installation within the oil tank body by designing C-shaped plates on the clamps to cooperate with the inner wall and / or the top fixing plate of the oil tank body. This effectively prevents the transformer coil from shaking during transportation or hoisting and also avoids collisions between the transformer coil and the inner wall of the oil tank. At the same time, by setting the above-mentioned installation and positioning structure on the upper part of the oil tank body, during hoisting, it is only necessary to match the size of the frame bracket with the size of the internal cavity of the oil tank body to quickly fix the frame bracket in the oil tank body, reducing manual intervention for lowering and alignment, shortening the assembly time, and improving assembly efficiency.

[0021] (2) This application improves the convenience of alignment and installation by setting multiple mounting holes in different directions, reduces the upper alignment and positioning time, and improves assembly efficiency.

[0022] (3) The design of the end nut in this application can effectively adjust the distance and tension between the upper clamping assembly and the lower clamping assembly. This structure has a fast assembly speed, high mechanical strength, and can better adapt to the needs of the oil tank during hoisting and transportation.

[0023] (4) This application simplifies the assembly structure of the transformer coil by designing each upper and lower clamp as a C-shaped plate structure, reduces the overall weight of the transformer during lifting, improves the lifting efficiency, and achieves lightweight fixed assembly.

[0024] (5) This application avoids the problem of stress concentration on the clamps caused by directly lifting the upper and lower clamps by designing multiple evenly distributed lifting lugs, thereby reducing the risk of stress concentration and structural deformation in the tank wall. In addition, the reinforcing iron block designed in this application is connected to the lifting lugs in the same vertical direction. When lifting the lifting lugs, the reinforcing iron can distribute part of the force on the lifting lugs, which can enhance the mechanical strength and prevent the lifting lugs and clamps from being damaged due to excessive force. It not only improves the mechanical strength of the clamps, but also improves the mechanical strength of the lifting lugs, and makes the lifting and transportation of the fuel tank more convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the support structure in the fuel tank assembly structure of the preferred embodiment 1 of this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point a in the middle;

[0027] Figure 3 This is a schematic diagram of the fuel tank assembly structure of the preferred embodiment 1 of this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point b in the middle;

[0029] Figure 5 This is a schematic diagram of the connection structure between the upper clamping component and the C-shaped plate in the fuel tank assembly structure of the preferred embodiment 1 of this utility model;

[0030] Figure 6 This is a schematic diagram of the connection structure between the lower clamping component and the C-shaped plate in the fuel tank assembly structure of the preferred embodiment 1 of this utility model;

[0031] Figure 7 This is a front view of the upper clamping component in the fuel tank assembly structure of the preferred embodiment 1 of this utility model;

[0032] Figure 8 This is a cross-sectional schematic diagram of the upper clamping component in the oil tank assembly structure of the preferred embodiment 1 of this utility model.

[0033] In the diagram: 1. Tank body; 11. Top fixing plate; 2. Bracket; 21. Upper clamp assembly; 211. First upper clamp; 212. Second upper clamp; 213. C-shaped plate; 22. Lower clamp assembly; 221. First lower clamp; 222. Second lower clamp; 223. C-shaped plate; 23. Connecting rod; 24. Buffer plate; 25. End nut; 26. Lifting lug; 27. Reinforcing block; 3. Fastener; 4. Buffer pad; A. Transformer coil. Detailed Implementation

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] like Figure 1-8 As shown, an oil tank assembly structure for an oil-immersed transformer includes an oil tank body 1 and a bracket 2 for fixing the transformer coil A. The bracket includes an upper clamping assembly 21 and a lower clamping assembly 22.

[0036] The upper clamping assembly 21 includes a first upper clamping member 211 and a second upper clamping member 212 arranged in parallel. The two ends of the first upper clamping member and the second upper clamping member are respectively fixedly connected by a C-shaped plate 213 to form an upper square frame. The lower clamping assembly 22 includes a first lower clamping member 221 and a second lower clamping member 222 arranged in parallel. The two ends of the first lower clamping member and the second lower clamping member are respectively fixedly connected by a C-shaped plate 223 to form a lower square frame. The upper square frame and the lower square frame are fixedly connected by several connecting rods 23 to form a frame-type support.

[0037] The size of the frame bracket is adapted to the internal cavity size of the fuel tank body. The inner wall of the fuel tank body is provided with a top fixing plate 11 that is adapted to the horizontal height position of the frame bracket. The frame bracket with the coil is placed behind the fuel tank body, and the C-shaped plate of the upper square frame is fixed to the top fixing plate by fasteners 3.

[0038] This tank assembly structure utilizes a C-shaped plate that mates with the top fixing plate on the tank body to effectively prevent the transformer coils from swaying during transportation or hoisting. Furthermore, by placing this mounting and positioning structure on the upper part of the tank body, during hoisting, the frame bracket can be quickly and easily fixed inside the tank body simply by matching its size to the internal cavity size. This reduces manual intervention for lowering and alignment, shortens assembly time, and improves assembly efficiency.

[0039] As a further preferred embodiment, the C-shaped plate located on the upper square frame has multiple vertically arranged and / or horizontally arranged mounting holes, and the top fixing plate has multiple matching mounting holes corresponding to the position and number of the mounting holes.

[0040] This application improves the convenience of alignment and installation by setting multiple mounting holes in different directions, reduces the upper alignment and positioning time, and improves assembly efficiency.

[0041] As a further preferred embodiment, a buffer sheet 24 is connected between the first upper clamp, the second upper clamp and the upper C-shaped plate; a buffer sheet 24 is also connected between the first lower clamp, the second lower clamp and the lower C-shaped plate.

[0042] As a further preferred embodiment, a buffer pad 4 is provided between the lower square frame and the bottom inner wall of the fuel tank body.

[0043] This application reduces collisions between components and improves safety through the design of buffer pads or buffer sheets.

[0044] As a further preferred embodiment, several connecting rods are evenly distributed on the frame bracket, with each connecting rod passing between the upper clamping assembly and the lower clamping assembly. The distance and tension between the upper clamping assembly and the lower clamping assembly are adjusted by the end nut 25.

[0045] This application utilizes the design of the end nut to effectively adjust the distance and tension between the upper and lower clamping components. This structure offers fast assembly speed, high mechanical strength, and better adaptability to the needs of oil tanks during hoisting and transportation.

[0046] As a further preferred embodiment, the first upper clamp, the second upper clamp, the first lower clamp, and the second lower clamp are all C-shaped plates.

[0047] This application simplifies the assembly structure of the transformer coil by designing each upper and lower clamp as a C-shaped plate structure, reduces the overall weight of the transformer during lifting, improves lifting efficiency, and achieves lightweight fixed assembly.

[0048] As a further preferred embodiment, the upper square frame is provided with a plurality of integrally connected lifting lugs 26.

[0049] As a further preferred embodiment, there are four lifting lugs, which are evenly located on the outer top surfaces of the first upper clamp and the second upper clamp.

[0050] This application reduces the risk of stress concentration and structural deformation in the box wall by designing multiple evenly distributed lifting lugs.

[0051] As a further preferred embodiment, the first upper clamp and the second upper clamp are C-shaped plates, and a reinforcing iron block 27 is fixed to the inner wall of the C-shaped plate of the first upper clamp and the second upper clamp, and the reinforcing iron block is located below the lifting lug.

[0052] The reinforcing iron block designed in this application serves to enhance mechanical strength, which improves the mechanical strength of both the clamping parts and the lifting lugs, and also makes the lifting and transportation of the fuel tank more convenient.

[0053] Example 2

[0054] An oil-immersed transformer includes coils and an oil tank assembly structure as described above. The oil-immersed transformer of this application incorporates the technical content of the oil tank assembly structure, enabling the oil-immersed transformer to also possess its corresponding beneficial effects, which will not be elaborated here; please refer to Embodiment 1 for details.

[0055] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An oil tank assembly structure for an oil-immersed transformer, characterized in that, It includes an oil tank body and a bracket for fixing the transformer coil, the bracket including an upper clamp assembly and a lower clamp assembly; The upper clamping assembly includes a first upper clamp and a second upper clamp arranged in parallel. The two ends of the first upper clamp and the second upper clamp are respectively fixedly connected by a C-shaped plate to form an upper square frame. The lower clamping assembly includes a first lower clamp and a second lower clamp arranged in parallel. The two ends of the first lower clamp and the second lower clamp are respectively fixedly connected by a C-shaped plate to form a lower square frame. The upper square frame and the lower square frame are fixedly connected by several connecting rods to form a frame-type support. The size of the frame bracket is adapted to the internal cavity size of the fuel tank body. The inner wall of the fuel tank body is provided with a top fixing plate adapted to the horizontal height position of the frame bracket. After the frame bracket with the coil is placed in the fuel tank body, the C-shaped plate of the upper square frame is fixed to the top fixing plate by fasteners.

2. The oil tank assembly structure for an oil-immersed transformer according to Claim 1, characterized in that, The C-shaped plate located on the upper square frame has multiple vertically arranged and / or horizontally arranged mounting holes, and the top fixing plate has multiple matching mounting holes corresponding to the position and number of the mounting holes.

3. The oil tank assembly structure for an oil immersed transformer according to claim 1, characterized in that, A buffer sheet is connected between the first upper clamp, the second upper clamp and the upper C-shaped plate; a buffer sheet is connected between the first lower clamp, the second lower clamp and the lower C-shaped plate.

4. The oil tank assembly structure for an oil-immersed transformer according to claim 1 or 3, characterized in that, A buffer pad is provided between the lower square frame and the bottom inner wall of the fuel tank body.

5. The oil tank assembly structure for an oil immersed transformer according to claim 1, characterized in that, Several connecting rods are evenly distributed on the frame bracket. Each connecting rod passes between the upper clamping assembly and the lower clamping assembly. The distance and tension between the upper clamping assembly and the lower clamping assembly are adjusted by the end nut.

6. The oil tank assembly structure for an oil immersed transformer according to claim 1, characterized in that, The first upper clamp, the second upper clamp, the first lower clamp, and the second lower clamp are all C-shaped plates.

7. The oil tank assembly structure for an oil-immersed transformer according to Claim 6, characterized in that, The upper square frame is provided with multiple integrally connected lifting lugs.

8. The oil tank assembly structure for an oil-immersed transformer as described in claim 7, characterized in that, There are four lifting lugs, which are evenly located on the outer top surfaces of the first upper clamp and the second upper clamp.

9. The oil tank assembly structure for an oil immersed transformer according to claim 7, characterized in that, The first upper clamp and the second upper clamp are C-shaped plates. Reinforcing iron blocks are fixed to the inner walls of the C-shaped plates of the first upper clamp and the second upper clamp, and the reinforcing iron blocks are located below the lifting lug.

10. An oil-immersed transformer, characterized by comprising: It includes a coil and a tank assembly structure as described in any one of claims 1-9.

Images