Full-sealed transformer oil tank inner wall structure

Abstract

The utility model discloses a full-sealed transformer oil tank inner wall structure, and belongs to the field of full-sealed transformer oil tank inner walls. A full-sealed transformer oil tank inner wall structure comprises a transformer body, and a supporting plate and a circuit board are arranged on the transformer body. The upper end of the fixing plate is fixedly connected with the lower ends of the fluctuation plate and the flow guide plate, the fixing plate is fixedly connected with the inner wall of the shell, reinforcing ribs are arranged at the lower end of the fixing plate, the fluctuation plate and the flow guide plate are arranged in the same vertical plane in a staggered mode, and an upper connecting plate is fixedly connected to the upper end of the inner surface of the shell; the upper end of the fluctuation plate is fixedly connected with the upper connecting plate, and the upper end of the flow guide plate is connected with the upper connecting plate in a buckled mode. A basis can be provided for the installation of the transformer, the installation of the transformer is simpler, meanwhile, the heat dissipation efficiency of the transformer is improved, and the aging of the fully-sealed transformer is delayed.

Description

Technical Field

[0001] The utility model relates to the field of fully sealed transformer oil tank inner walls, and more specifically to a fully sealed transformer oil tank inner wall structure. Background Art

[0002] The existing fully sealed transformer oil tank inner wall structure is generally only provided with positioning columns; the transformer body is fixed in the transformer oil tank by the positioning columns at the bottom of the tank. However, during assembly, the transformer body easily blocks the assembler's line of sight, making it difficult for the assembler to observe the positioning columns at the bottom of the tank, which makes it difficult and time-consuming to assemble the transformer in the tank. In order to solve this problem, an oil-immersed transformer oil tank is provided in the specification of the CN219105886U utility model patent from China published on May 30, 2023. This utility model fixes the transformer body tightly in the stepped groove-shaped transformer positioning base through a stepped groove-shaped transformer positioning base fixed on the bottom surface of the box body. This makes the installation operation of the transformer body simple, but increases the contact between the transformer body and the transformer oil tank, so that there is no transformer oil for heat dissipation between the transformer body and the transformer positioning base, which reduces the heat dissipation effect of the transformer and easily accelerates the aging of the internal parts of the transformer.

[0003] Therefore, it is necessary to design a device that is easy to install and operate, so that the position of the transformer is not easily changed during movement, and at the same time can accelerate the heat dissipation rate of the fully sealed transformer. Utility Model Content

[0004] 1. Problem to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a fully sealed transformer oil tank inner wall structure, which can provide a basis for the installation of the transformer through a wave plate and a guide plate, making the installation of the transformer simpler, and at the same time form a disturbance on the flow of transformer oil, thereby increasing the heat dissipation efficiency of the transformer and delaying the aging of the fully sealed transformer.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A fully sealed transformer oil tank inner wall structure comprises a transformer body, on which a support plate and a circuit board are arranged; further comprising a fixed plate, a fluctuating plate, a guide plate and an outer shell, wherein the upper end of the fixed plate is fixedly connected to the lower ends of the fluctuating plate and the guide plate, the fixed plate is fixedly connected to the inner wall of the outer shell, and a reinforcing rib is arranged at the lower end of the fixed plate, the fluctuating plate and the guide plate are staggered in the same vertical plane, an upper connecting plate is fixedly connected to the upper end of the inner surface of the outer shell, the upper end of the fluctuating plate is fixedly connected to the upper connecting plate, and the upper end of the guide plate is buckled with the upper connecting plate.

[0009] Furthermore, the fixing plate includes a first fixing plate, a second fixing plate and a third fixing plate, the first fixing plate is fixedly installed on the inner side surface of the short side end of the shell, the third fixing plate and a pair of second fixing plates are fixedly installed on the inner side surface of the long side end of the shell, and the third fixing plate is located between the pair of second fixing plates, and the first fixing plate, the second fixing plate and the third fixing plate are located at one end close to the bottom surface of the shell.

[0010] Furthermore, a support column for fixing the transformer body is fixedly connected to the inner bottom surface of the shell, and the support column is located between the second fixing plate and the third fixing plate.

[0011] Furthermore, a convection plate is fixedly installed on the inner surface of the long side end of the shell, the fluctuation plate and the guide plate are both located on the side of the convection plate away from the shell, there is a flow space for transformer oil to flow between the fluctuation plate and the convection plate, the guide plate is fixedly connected to the convection plate, and a through groove for transformer oil to pass through is provided at the connection between the guide plate and the convection plate and at one end close to the upper connecting plate, and there is a gap between every two convection plates for transformer oil to flow inside, so that the inner wall of the shell is corrugated.

[0012] Furthermore, an oil outlet hole is provided on the shell, and the oil outlet hole is located at a corner of the shell, and the height of the oil outlet hole is preferably lower than the height of the top surface of the fixing plate.

[0013] Furthermore, the distance between the wave plate and the guide plate is preferably equal to the distance between the outermost ends of the two circuit boards.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. A fixed plate is fixedly connected to the side wall of the shell of the utility model, and a reinforcing rib is arranged on the side of the fixed plate facing the inner bottom surface of the shell, which increases the bearing capacity of the fixed plate and makes it difficult for the fixed plate to deform in the vertical direction; a wave plate and a guide plate are fixedly connected to the upper end of the fixed plate, which provides a basis for installing the transformer body and makes the operation of installing the transformer body easier to complete, and the wave plate and the guide plate are staggered in the same vertical plane, so that the transformer oil forms a complex fluid flow model, thereby increasing the disturbance in the flow process of the transformer oil, so that the heat dissipation effect of the transformer oil is enhanced, and the aging of the transformer caused by untimely heat dissipation is slowed down; there is a space for the transformer oil to flow between the wave plate and the convection plate, so that the middle part of the wave plate can shake, thereby reducing the process of the vibration of the transformer body being transmitted to the shell, and reducing the noise generated when the transformer is running; the guide plate is connected to the convection plate, and a through groove for the transformer oil to pass through is opened at the connection between the guide plate and the convection plate and one end close to the upper connecting plate, so as to guide the transformer oil to flow more evenly, thereby improving the fluidity of the transformer oil and accelerating the heat dissipation.

[0017] 2. The first fixing plate of the utility model is located on the inner side of the short side of the shell, and the third fixing plate is located in the middle of the long side and the inner side of the shell; a pair of second fixing plates are fixedly installed on both sides of the long side of the shell and the third fixing plate, so that the weight of the transformer body is evenly distributed on the first fixing plate, the second fixing plate and the third fixing plate, so that the first fixing plate, the second fixing plate and the third fixing plate are not easily deformed in the vertical direction, and the distance between the second fixing plate and the third fixing plate is preferably equal to the width of the transformer body support plate, so that the transformer body support plate can be fixed between the second fixing plate and the third fixing plate, so that the transformer body is not easily offset in the front and rear directions.

[0018] 3. A support column is fixedly installed on the inner bottom surface of the shell of the utility model. The support column is located between the second fixing plate and the third fixing plate to position the support plate of the transformer body so that it is not easy to move in the shell, and at the same time makes the installation and disassembly of the transformer body more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the top view of the utility model;

[0021] Figure 3 for Figure 1 The structural diagram of part A in the figure;

[0022] Figure 4 A schematic cross-sectional view of the structure of the present utility model;

[0023] Figure 5 It is a partial cross-sectional structural schematic diagram of the utility model;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure of part C;

[0025] Figure 7 This is a schematic diagram of the top view of the structure of the utility model after the transformer body is installed (the bold part is the transformer body).

[0026] Description of the numbers in the figure:

[0027] 1 fixed plate, 11 first fixed plate, 12 second fixed plate, 13 third fixed plate, 2 support column, 3 wave plate, 4 guide plate, 5 housing, 51 upper connecting plate, 6 convection plate, 7 oil outlet, 8 transformer body, 81 support plate, 82 circuit board. DETAILED DESCRIPTION

[0028] Embodiment 1:

[0029] See also Figure 1-Figure 7 A fully sealed transformer oil tank inner wall structure includes a fixed plate 1, a support column 2, a fluctuating plate 3, a guide plate 4, a shell 5, a convection plate 6 and an oil outlet 7; the fixed plate 1, the support column 2, the fluctuating plate 3, the guide plate 4 and the convection plate 6 are all fixedly connected in the shell 5, and the inner wall of the shell 5 is provided with an oil outlet 7. The transformer body 8 includes a support plate 81 and a circuit board 82, and the prior art is referred to here.

[0030] The outer shell 5 is preferably a rectangular parallelepiped; a plurality of heat dissipation fins are fixedly connected to the outer side of the long side of the outer shell 5 to increase the heat dissipation function of the transformer, so that the heat generated by the transformer body 8 inside the transformer can be dissipated in time, thereby slowing down the aging of the fully sealed transformer due to untimely heat dissipation. An upper connecting plate 51 is fixed to the upper end and inner side of the outer shell 5 to provide structural support for the upper end side wall of the outer shell 5, so that the upper end of the outer shell 5 is not easily deformed; the inner surface of the upper connecting plate 51 is provided with a protrusion for the guide plate 4 to snap; a plurality of convection plates 6 are provided on the inner surface of the long end of the outer shell 5, and there is a gap between every two convection plates 6, so that the inner wall of the outer shell 5 is corrugated, thereby guiding the flow of transformer oil, accelerating the heat dissipation of the transformer, and reducing the influence of insufficient heat dissipation on the fully sealed transformer.

[0031] The fixing plate 1 is located on the inner side of the shell 5, close to the bottom side of the shell 5, and a reinforcing rib is provided at the lower end of the fixing plate 1 to increase the bearing capacity of the fixing plate 1, so that the fixing plate 1 can maintain the original shape and size when carrying the transformer body 8, and is not easy to deform; the fixing plate 1 includes a first fixing plate 11, a second fixing plate 12 and a third fixing plate 13; the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13 are located in the same horizontal plane, the first fixing plate 11 is located at the short side end of the shell 5, a pair of second fixing plates 12 and the third fixing plate 13 are located at the long side end of the shell 5, and the third fixing plate 13 is located between the pair of second fixing plates 12, so that the weight of the transformer body 8 can be evenly distributed on the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13, so that the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13 are not easy to deform in the vertical direction during use. The distance between the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13 and the inner bottom surface of the shell 5 is preferably not less than the height of the support plate 81 of the transformer body 8, so that the transformer body 8 can be framed on the fixing plate 1, so that there is a space for the transformer oil to flow between the transformer body 8 and the shell 5, thereby accelerating the heat dissipation of the transformer; the distance between the second fixing plate 12 and the third fixing plate 13 is preferably equal to the width of the support plate 81, so that the transformer body support plate 81 can be accurately installed between the second fixing plate 12 and the third fixing plate 13, so that the installation process of the transformer body 8 is simple and easy to operate.

[0032] The support column 2 is located on the inner bottom surface of the outer shell 5, between the second fixing plate 12 and the third fixing plate 13. The support column 2 can be snap-connected with the groove arranged at the corresponding position on the support plate 81, so that the transformer body 8 is not easily offset in the horizontal direction, thereby reducing the impact of the change in the position of the transformer body 8 on the use of the fully sealed transformer.

[0033] The lower ends of the fluctuation plate 3 and the guide plate 4 are fixedly connected to the upper surface of the third fixed plate 13, the upper end of the fluctuation plate 3 is fixedly connected to the upper connecting plate 51, and the upper end of the guide plate 4 is snap-connected to the upper connecting plate 51, which provides a basis for the installation of the transformer body 8 and makes the installation operation of the transformer body 8 simpler; the distance between the fluctuation plate 3 and the guide plate 4 is preferably not less than the distance between the outermost ends of a pair of circuit boards 82 of the transformer body 8 for fixing the wire group; during the installation process, the pair of circuit boards 82 are located between the fluctuation plate 3 and the guide plate 4, so that the transformer body 8 can be accurately installed on the fixed plate 1, and the installation operation is simple and quick, and there is no need to make multiple adjustments. The wave plate 3 and the guide plate 4 are staggered in the same vertical plane, so that the transformer oil forms a more complex flow field, preventing impurities and moisture in the transformer oil from being deposited on the core components of the transformer body 8, and increasing the number of disturbances and vortices formed in the flow process of the transformer oil, thereby improving the heat transfer efficiency, so that the heat generated by the transformer can be transferred to the shell 5 in time, and dissipated from the outside of the shell 5, thereby increasing the heat dissipation efficiency of the transformer; the wave plate 3 is located on the side of the convection plate 6 away from the shell 5, and there is a space for the transformer oil to flow between the wave plate 3 and the convection plate 6, so that the middle part of the wave plate 3 can shake, thereby reducing the process of the vibration of the transformer body 8 being transmitted to the shell 5, and reducing the noise generated by the vibration of the fully sealed transformer; the guide plate 4 is fixedly connected to the convection plate 6, and a through groove for the transformer oil to pass through is provided at the connection between the guide plate 4 and the convection plate 6 and at one end close to the upper connecting plate 51, which can guide the flow of the transformer oil and make the flow of the transformer oil more uniform, thereby improving the heat dissipation effect of the fully sealed transformer, while reducing the fluctuation of the transformer oil level, so that the transformer body 8 is not easily exposed to the air.

[0034] The oil outlet hole 7 is located on one side where the first fixing plate 11 is located, close to one end of the corner of the outer shell 5, and the distance between the oil outlet hole 7 and the inner bottom surface of the outer shell 5 is smaller than the distance between the fixing plate 1 and the inner bottom surface of the outer shell 5; when the fully sealed transformer is inspected and repaired, the transformer oil in the outer shell 5 can be discharged through the oil outlet hole 7, reducing the impact of incomplete transformer oil discharge on the disassembly of the transformer body 8.

Claims

1. A fully sealed transformer oil tank inner wall structure, comprising a transformer body (8), a support plate (81) and a circuit board (82) being provided on the transformer body (8), characterized in that: The invention also comprises a fixed plate (1), a fluctuating plate (3), a guide plate (4) and an outer shell (5); the upper end of the fixed plate (1) is fixedly connected to the lower ends of the fluctuating plate (3) and the guide plate (4); the fixed plate (1) is fixedly connected to the inner wall of the outer shell (5); and a reinforcing rib is provided at the lower end of the fixed plate (1); the fluctuating plate (3) and the guide plate (4) are staggeredly arranged in the same vertical plane; an upper connecting plate (51) is fixedly connected to the upper end of the inner surface of the outer shell (5); the upper end of the fluctuating plate (3) is fixedly connected to the upper connecting plate (51); and the upper end of the guide plate (4) is snap-connected to the upper connecting plate (51).

2. The fully sealed transformer oil tank inner wall structure according to claim 1 is characterized in that: The fixing plate (1) comprises a first fixing plate (11), a second fixing plate (12) and a third fixing plate (13); the first fixing plate (11) is fixedly mounted on the inner side surface of the short side end of the housing (5); the third fixing plate (13) and a pair of second fixing plates (12) are fixedly mounted on the inner side surface of the long side end of the housing (5); the third fixing plate (13) is located between the pair of second fixing plates (12); and the first fixing plate (11), the second fixing plate (12) and the third fixing plate (13) are located at one end close to the bottom surface of the housing (5).

3. The fully sealed transformer oil tank inner wall structure according to claim 1 is characterized in that: A support column (2) for fixing the transformer body (8) is fixedly connected to the inner bottom surface of the housing (5); the support column (2) is located between the second fixing plate (12) and the third fixing plate (13).

4. The fully sealed transformer oil tank inner wall structure according to claim 1 is characterized in that: A convection plate (6) is fixedly mounted on the inner surface of the long side end of the housing (5); the fluctuation plate (3) and the guide plate (4) are both located on the side of the convection plate (6) away from the housing (5); a flow space for transformer oil to flow is provided between the fluctuation plate (3) and the convection plate (6); the guide plate (4) is fixedly connected to the convection plate (6); a through groove for transformer oil to pass through is provided at the connection between the guide plate (4) and the convection plate (6) and at one end close to the upper connecting plate (51); and a gap for transformer oil to flow is provided between every two convection plates (6), so that the inner wall of the housing (5) forms a corrugated shape.

5. The fully sealed transformer oil tank inner wall structure according to claim 1 is characterized in that: An oil outlet hole (7) is provided on the outer shell (5). The oil outlet hole (7) is located at a corner of the outer shell (5), and the height of the oil outlet hole (7) is lower than the height of the top surface of the fixing plate (1).

6. The fully sealed transformer oil tank inner wall structure according to claim 1, characterized in that: The distance between the wave plate (3) and the guide plate (4) is equal to the distance between the outermost ends of the two circuit boards (82).

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