Oil-immersed power transformer

Abstract

The utility model discloses an oil-immersed power transformer, relates to the technical field of transformers, solves the problems that an existing device is poor in heat dissipation effect and high in cost, and adopts the following scheme that a fixing plate is fixedly installed in a transformer box. Transformer oil at the bottom is pumped into the circulating pipe through the circulating pump, a part of the circulating pipe is located outside the transformer box and then is output into the top face of the transformer box through the circulating pipe, the fluidity of the transformer oil is guaranteed, and the heat dissipation effect is improved; heat of transformer oil is transferred into the heat conduction column through the hollow heat conduction column made of copper materials, then the heat is transferred to the heat dissipation plate through aluminum oxide in the heat conduction column, finally heat dissipation is conducted through the heat dissipation fins A, use of the copper materials is reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] During the use of oil-immersed transformers, the oil is sealed in a special oil tank. Since the transformer oil is sealed in the oil tank, the transformer oil is in a static state in the oil tank, and only relying on the corrugated radiator for heat dissipation, the heat dissipation effect is poor.

[0003] After retrieval, in the application with the patent publication number CN214541789U, an oil-immersed power transformer is disclosed, which includes a transformer main body and heat sinks installed around it. The outer wall of the transformer main body is fixedly connected with two baffles symmetrically up and down, and a plurality of flow guide plates are rotatably connected at equal intervals linearly on the two baffles arranged symmetrically up and down. An expulsion mechanism is provided on the top surface of one of the baffles, and the transformer is cooled by the heat sinks around it to improve the heat dissipation efficiency.

[0004] However, since the transformer oil in the transformer is static, the heat dissipation effect by directly using the heat sinks is poor. At the same time, when directly conducting heat dissipation on the outer wall of the transformer tank, the main body of the transformer tank has to use heat-conducting copper material, which results in low strength of the transformer tank and is easily damaged when collided, and excessive use of copper material leads to high production costs.

[0005] Therefore, we propose an oil-immersed power transformer. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an oil-immersed power transformer, which solves the problems of poor heat dissipation effect and high cost of the existing device.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: an oil-immersed power transformer, including a transformer tank, and a tank cover with a matching specification is assembled on the top surface of the transformer tank;

[0008] Fixed plates opposite to each other are fixedly installed inside the transformer tank. The distance between the fixed plate and the bottom of the transformer tank is 20 cm. A transformer body is assembled on the top surface of the fixed plate. Opposite-positioned circulation pumps are fixedly installed at the bottom of the transformer tank. Four groups of opposite-positioned circulation pipes are sleeved on the output ends of the circulation pumps. The circulation pipes penetrate through the transformer tank, and the output ends of the circulation pipes are located inside the top surface of the transformer tank. Heat dissipation fins B are assembled on the left and right sides of the transformer tank;

[0009] On the outer walls on the front and rear sides of the transformer box, heat dissipation plates with matching specifications are fixedly installed. The heat dissipation plates are connected to the inside of the transformer box through uniformly distributed heat conduction columns. The heat conduction columns are hollow and made of copper material. Alumina is assembled inside the heat conduction columns. Uniformly distributed heat dissipation fins A are fixedly installed on the outer side of the heat dissipation plates.

[0010] Preferably, four sets of threaded holes are provided on the top surface of the transformer box at opposite positions. Four sets of mounting holes are provided on the top surface of the box cover at opposite positions. And locking bolts with matching specifications are assembled in the threaded holes, which can facilitate the installation and disassembly of the box cover.

[0011] Preferably, sealing frames are fixedly installed on the top surface of the transformer box at opposite positions. Sealing grooves with matching specifications are provided on the bottom surface of the box cover, which can improve the sealing performance between the box cover and the transformer box and prevent the leakage of transformer oil.

[0012] Preferably, uniformly distributed through holes are provided on the top surface of the fixing plate, which can dissipate heat from the bottom surface of the transformer body and improve the heat dissipation effect.

[0013] Preferably, four sets of handles are fixedly installed on the outer wall of the transformer box at opposite positions, which can facilitate the hoisting of the whole device.

[0014] Preferably, four sets of feet are fixedly installed on the bottom surface of the transformer box, which can improve the stability of the device.

[0015] 1. For this oil-immersed power transformer, through the settings of the circulation pump, circulation pipe and heat dissipation fins B, the transformer oil at the bottom is pumped into the circulation pipe by the circulation pump. Part of the circulation pipe is located outside the transformer box, and then it is output to the inside of the top surface of the transformer box through the circulation pipe, ensuring the fluidity of the transformer oil. The heat dissipation fins B can also dissipate heat from the left and right sides of the transformer box, improving the heat dissipation effect.

[0016] 2. At the same time, through the settings of the heat dissipation plate, heat conduction column and heat dissipation fins A, the heat of the transformer oil is transferred into the heat conduction column by the hollow heat conduction column made of copper material. Then the alumina inside the heat conduction column transfers the heat to the heat dissipation plate, and finally the heat is dissipated through the heat dissipation fins A, reducing the use of copper material, ensuring the strength of the transformer box and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention;

[0018] Figure 2 is the structural schematic diagram of the heat conduction column of the present invention;

[0019] Figure 3Structural schematic diagram of the circulation pipe of the present utility model;

[0020] Figure 4 Structural schematic diagram of the box cover of the present utility model.

[0021] In the figure: 1, transformer box; 2, box cover; 3, foot pad; 4, fixing plate; 5, transformer body; 6, through hole; 7, circulation pump; 8, circulation pipe; 9, heat conduction column; 10, heat dissipation plate; 11, heat dissipation fin A; 12, heat dissipation fin B; 13, sealing frame; 14, sealing groove; 15, threaded hole; 16, mounting hole; 17, handle. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1:

[0024] As Figures 1-4 shown: Oppositely-positioned fixing plates 4 are fixedly installed inside the transformer box 1. The distance between the fixing plate 4 and the bottom of the transformer box 1 is 20 cm. The transformer body 5 is assembled on the top surface of the fixing plate 4. Oppositely-positioned circulation pumps 7 are fixedly installed at the bottom of the transformer box 1. Four groups of oppositely-positioned circulation pipes 8 are sleeved on the output ends of the circulation pumps 7. The circulation pipes 8 penetrate through the transformer box 1. The output ends of the circulation pipes 8 are located inside the top surface of the transformer box 1. Heat dissipation fins B12 are assembled on the left and right sides of the transformer box 1. Through the settings of the circulation pump 7, the circulation pipes 8, and the heat dissipation fins B12, the transformer oil at the bottom is pumped into the circulation pipes 8 by the circulation pump 7. A part of the circulation pipes 8 is located outside the transformer box 1, and then is output into the inside of the top surface of the transformer box 1 through the circulation pipes 8, ensuring the fluidity of the transformer oil. The heat dissipation fins B12 can also dissipate heat from the left and right sides of the transformer box 1, improving the heat dissipation effect.

[0025] Embodiment 2:

[0026] As Figures 2-4As shown in the figure: On the outer walls of the front and rear sides of the transformer box 1, heat dissipation plates 10 with matching specifications are fixedly installed. The heat dissipation plates 10 are connected to the inside of the transformer box 1 through evenly distributed heat conduction columns 9. The heat conduction columns 9 are hollow and made of copper material. Alumina is assembled inside the heat conduction columns 9. On the outer side of the heat dissipation plates 10, evenly distributed heat dissipation fins A11 are fixedly installed. Through the setting of the heat dissipation plates 10, heat conduction columns 9 and heat dissipation fins A11, the heat of the transformer oil is transferred into the heat conduction columns 9 through the hollow heat conduction columns 9 made of copper material. Then, the alumina inside the heat conduction columns 9 transfers the heat to the heat dissipation plates 10, and finally, heat dissipation is carried out through the heat dissipation fins A11, reducing the use of copper material, ensuring the strength of the transformer box 1, and reducing the production cost.

[0027] Embodiment 3:

[0028] As Figures 2-3 shown in the figure: On the top surface of the transformer box 1, sealing frames 112 opposite in position are fixedly installed. On the bottom surface of the box cover 2, sealing grooves 14 with matching specifications are opened, which can improve the sealing performance between the box cover 2 and the transformer box 1 and prevent the leakage of transformer oil.

[0029] The working principle and usage process of the present utility model: When the device needs to work, the transformer oil at the bottom is pumped into the circulation pipe 8 through the circulation pump 7. A part of the circulation pipe 8 is located outside the transformer box 1, and then it is output to the inside of the top surface of the transformer box 1 through the circulation pipe 8 to ensure the fluidity of the transformer oil. The heat dissipation fins B12 can also dissipate heat from the left and right sides of the transformer box 1, improving the heat dissipation effect. At the same time, the heat of the transformer oil is transferred into the heat conduction columns 9 through the hollow heat conduction columns 9 made of copper material. Then, the alumina inside the heat conduction columns 9 transfers the heat to the heat dissipation plates 10, and finally, heat dissipation is carried out through the heat dissipation fins A11, reducing the use of copper material, ensuring the strength of the transformer box 1, and reducing the production cost.

[0030] The above shows and describes the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0031] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oil-immersed power transformer, comprising a transformer box (1), the top surface of the transformer box (1) being equipped with a box cover (2) of matching specifications; Features: The transformer box (1) is fixedly provided with fixed plates (4) in opposite positions, the distance between the fixed plates (4) and the bottom of the transformer box (1) is 20 cm, the top surface of the fixed plates (4) is provided with a transformer body (5), the bottom of the transformer box (1) is fixedly provided with circulating pumps (7) in opposite positions, the output end of the circulating pump (7) is provided with four sets of circulating pipes (8) in opposite positions, the circulating pipes (8) pass through the transformer box (1), the output end of the circulating pipes (8) is located inside the top surface of the transformer box (1), and the left and right sides of the transformer box (1) are provided with heat dissipation fins B (12); Heat sinks (10) of matching specifications are fixedly mounted on the outer walls of the front and rear sides of the transformer box (1); the heat sink (10) is connected to the interior of the transformer box (1) via evenly distributed heat-conducting columns (9); the heat-conducting columns (9) are hollow and made of copper material; the interior of the heat-conducting columns (9) is equipped with alumina; and evenly distributed heat-dissipating fins A (11) are fixedly mounted on the outer side of the heat sink (10).

2. The oil-immersed power transformer according to claim 1, characterized in that: The top surface of the transformer box (1) is provided with four groups of threaded holes (15) in opposite positions, the top surface of the box cover (2) is provided with four groups of mounting holes (16) in opposite positions, and locking bolts of matching specifications are installed in the threaded holes (15).

3. The oil-immersed power transformer according to claim 1, characterized in that: A sealing frame (112) is fixedly mounted on the top surface of the transformer box (1) and is positioned opposite to the top surface of the transformer box, and a sealing groove (14) of matching specifications is formed on the bottom surface of the box cover (2).

4. The oil-immersed power transformer according to claim 1, characterized in that: The top surface of the fixing plate (4) is provided with evenly distributed through holes (6).

5. The oil-immersed power transformer according to claim 1, characterized in that: Four groups of handles (17) in opposite positions are fixedly mounted on the outer wall of the transformer box (1).

6. The oil-immersed power transformer according to claim 1, characterized in that: Four sets of feet (3) are fixedly mounted on the bottom surface of the transformer box (1).

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