Oil-immersed load regulating distribution transformer

Abstract

The utility model discloses an oil -immersed load regulating voltage distribution transformer, including distribution transformer main part, the lateral wall of distribution transformer main part is fixed with first heat dissipation board, the below of first heat dissipation board is provided with hollow board, this oil -immersed load regulating voltage distribution transformer is provided with first bevel gear and second bevel gear, can drive the rotation of first bevel gear through the opening of motor, the rotation of first bevel gear can make second bevel gear rotate, indirectly drive first threaded column to rotate, the rotation of first threaded column can make first threaded plate move, and the movement of first threaded plate can make movable plate move, and the movement of movable plate can make drive plate move, and the movement of drive plate can push out multiple second heat dissipation boards, thereby can push out second heat dissipation board outward according to demand and increase the heat dissipation area, effectively improved the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to distribution transformers, and more particularly to an oil-immersed on-load tap-changing distribution transformer. Background Technology

[0002] On-load tap-changing transformers can adjust the voltage of the transformer by adjusting the tap changer under load without interrupting the power supply, thereby changing the output voltage. The basic principle is to bring out several taps from the high-voltage winding of the transformer, and switch the taps to change the effective number of turns without interrupting the load current.

[0003] Most distribution transformers on the market rely on their own heat sinks for heat dissipation, which is inefficient and cannot automatically adjust the heat dissipation efficiency according to the transformer temperature. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide an oil-immersed on-load tap-changing distribution transformer, which solves the problem that most distribution transformers in the prior art rely on their own heat sinks for heat dissipation, which is inefficient and cannot automatically adjust the heat dissipation efficiency according to the transformer temperature.

[0005] Technical Solution: The oil-immersed on-load tap-changing distribution transformer of this utility model includes a distribution transformer body. A first heat dissipation plate is fixed to the side wall of the distribution transformer body. A hollow plate is arranged below the first heat dissipation plate. A drive motor is fixed inside the hollow plate. A first rotating shaft is arranged at the rotating end of the drive motor. A first bevel gear is fixed at the other end of the first rotating shaft. A second bevel gear is meshed with one side of the first bevel gear. A first connecting column is fixed inside the second bevel gear. A first threaded column is fixed at the top of the first connecting column. A first bearing is arranged around the other end of the first threaded column. A first threaded plate is threadedly connected around the first threaded column. A movable plate is arranged on one side of the first threaded plate. A second rotating shaft is arranged at the connection between the first threaded plate and the movable plate. A driving plate is arranged at the other end of the movable plate. A third rotating shaft is arranged at the connection between the movable plate and the driving plate. A second heat dissipation plate is fixed to the side wall of the driving plate.

[0006] Preferably, the first bevel gear and the first rotating shaft rotate under the drive of a drive motor, and the first bevel gear and the second bevel gear mesh with each other.

[0007] Preferably, the second bevel gear is fixedly connected to the first threaded post via the first connecting post.

[0008] Preferably, the first threaded column forms a rotating structure with the hollow plate via a first bearing.

[0009] Preferably, the first threaded post and the first threaded plate form a threaded connection.

[0010] Preferably, the first threaded plate forms a rotating structure with the movable plate via the second rotating shaft.

[0011] Preferably, the movable plate forms a rotating structure with the driving plate via a third rotating shaft.

[0012] Preferably, the driving plate and multiple sets of second heat dissipation plates form a fixed structure.

[0013] Preferably, a temperature sensor is installed inside the main body of the distribution transformer, the temperature sensor is electrically connected to the control module, and the control module is electrically connected to the drive motor.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following advantages: The oil-immersed on-load tap-changing distribution transformer is equipped with a first bevel gear and a second bevel gear. By turning on the drive motor, the first bevel gear can be driven to rotate. The rotation of the first bevel gear can cause the second bevel gear to rotate, which indirectly drives the first threaded column to rotate. The rotation of the first threaded column can cause the first threaded plate to move. The movement of the first threaded plate can cause the movable plate to move. The movement of the movable plate can cause the driving plate to move. The movement of the driving plate can push out multiple sets of second heat dissipation plates. Thus, the second heat dissipation plates can be pushed outward as needed to increase the heat dissipation area, effectively improving the heat dissipation effect. This avoids the fact that the distribution transformer mostly relies on its own heat dissipation plates for heat dissipation, which is inefficient and cannot automatically adjust the heat dissipation efficiency according to the transformer temperature. Attached Figure Description

[0015] Figure 1 This is a top view schematic diagram of the oil-immersed on-load tap-changing distribution transformer of this utility model.

[0016] Figure 2 This is a bottom view of the structure of the oil-immersed on-load tap-changing distribution transformer of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure below the support plate of the oil-immersed on-load tap-changing distribution transformer of this utility model.

[0018] In the diagram: 1. Main body of the distribution transformer; 2. First heat sink; 3. Hollow plate; 4. Drive motor; 5. First shaft; 6. First bevel gear; 7. Second bevel gear; 8. First connecting column; 9. First threaded column; 10. First bearing; 11. First threaded plate; 12. Second shaft; 13. Movable plate; 14. Third shaft; 15. Drive plate; 16. Second heat sink. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, an oil-immersed on-load tap-changing distribution transformer includes a transformer body 1. A first heat dissipation plate 2 is fixed to the side wall of the transformer body 1. A hollow plate 3 is arranged below the first heat dissipation plate 2. A drive motor 4 is fixed inside the hollow plate 3. A first rotating shaft 5 is arranged at the rotating end of the drive motor 4. A first bevel gear 6 is fixed to the other end of the first rotating shaft 5. A second bevel gear 7 is meshed with one side of the first bevel gear 6. A first connecting post 8 is fixed inside the second bevel gear 7. A first threaded post 9 is fixed to the top of the first connecting post 8. A first bearing 10 is arranged around the other end of the first threaded post 9. A first threaded plate 11 is threadedly connected to the periphery of the first threaded post 9. A movable part is arranged on one side of the first threaded plate 11. The movable plate 13, the first threaded plate 11 and the movable plate 13 are connected by a second rotating shaft 12, the other end of the movable plate 13 is provided with a driving plate 15, the connection between the movable plate 13 and the driving plate 15 is provided with a third rotating shaft 14, and the side wall of the driving plate 15 is fixed with a second heat dissipation plate 16. When using this device, the main body of the distribution transformer 1 is connected to the external line through the high voltage bushing and the low voltage bushing. The temperature sensor inside the main body of the distribution transformer 1 monitors the internal temperature of the machine in real time and sends the monitoring data to the control module. Under normal circumstances, the main body of the distribution transformer 1 can complete the heat dissipation work by relying on the external heat dissipation plate. When the internal temperature of the main body of the distribution transformer 1 is too high, the temperature sensor sends a signal to the control module, and the control module controls the adjustment drive motor 4 to start.

[0021] The first bevel gear 6 and the first rotating shaft 5 rotate under the drive of the drive motor 4. The first bevel gear 6 and the second bevel gear 7 mesh with each other. The second bevel gear 7 is fixedly connected to the first threaded post 9 through the first connecting post 8. The first threaded post 9 forms a rotating structure with the hollow plate 3 through the first bearing 10. When the drive motor 4 is turned on, it can drive the first bevel gear 6 to rotate. Through the meshing structure of the first bevel gear 6 and the second bevel gear 7, the rotation of the first bevel gear 6 can cause the second bevel gear 7 to rotate, which indirectly drives the first threaded post 9 to rotate.

[0022] The first threaded post 9 and the first threaded plate 11 form a threaded connection. The first threaded plate 11 forms a rotating structure with the movable plate 13 through the second rotating shaft 12. The movable plate 13 forms a rotating structure with the driving plate 15 through the third rotating shaft 14. The driving plate 15 forms a fixed structure with multiple sets of second heat dissipation plates 16. Through the threaded connection between the first threaded post 9 and the first threaded plate 11, the rotation of the first threaded post 9 can move the first threaded plate 11. The movement of the first threaded plate 11 can move the movable plate 13. The movement of the movable plate 13 can move the driving plate 15. The movement of the driving plate 15 can push out multiple sets of second heat dissipation plates 16, thereby increasing the heat dissipation area as needed and effectively improving the heat dissipation effect.

[0023] Working principle: First, by turning on the drive motor 4, the first bevel gear 6 can be driven to rotate. The rotation of the first bevel gear 6 can cause the second bevel gear 7 to rotate, which indirectly drives the first threaded column 9 to rotate. The rotation of the first threaded column 9 can cause the first threaded plate 11 to move. The movement of the first threaded plate 11 can cause the movable plate 13 to move. The movement of the movable plate 13 can cause the driving plate 15 to move. The movement of the driving plate 15 can push out multiple sets of second heat dissipation plates 16. Thus, the second heat dissipation plates 16 can be pushed outward as needed to increase the heat dissipation area and effectively improve the heat dissipation effect.

Claims

1. An oil-immersed on-load tap-changing distribution transformer, characterized in that, The transformer includes a main body (1), a first heat sink (2) fixed to the side wall of the main body (1), a hollow plate (3) below the first heat sink (2), a drive motor (4) fixed inside the hollow plate (3), a first rotating shaft (5) provided at the rotating end of the drive motor (4), a first bevel gear (6) fixed at the other end of the first rotating shaft (5), a second bevel gear (7) meshing with one side of the first bevel gear (6), a first connecting column (8) fixed inside the second bevel gear (7), and a top end of the first connecting column (8) fixed with a... A first threaded post (9) is provided with a first bearing (10) on the outer periphery of the other end of the first threaded post (9). A first threaded plate (11) is threadedly connected to the outer periphery of the first threaded post (9). A movable plate (13) is provided on one side of the first threaded plate (11). A second rotating shaft (12) is provided at the connection between the first threaded plate (11) and the movable plate (13). A driving plate (15) is provided at the other end of the movable plate (13). A third rotating shaft (14) is provided at the connection between the movable plate (13) and the driving plate (15). A second heat sink (16) is fixed to the side wall of the driving plate (15).

2. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The first bevel gear (6) and the first rotating shaft (5) rotate under the drive of the drive motor (4), and the first bevel gear (6) meshes with the second bevel gear (7).

3. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The second bevel gear (7) is fixedly connected to the first threaded post (9) via the first connecting post (8).

4. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The first threaded column (9) forms a rotating structure with the hollow plate (3) through the first bearing (10).

5. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The first threaded post (9) and the first threaded plate (11) form a threaded connection.

6. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The first threaded plate (11) forms a rotating structure with the movable plate (13) via the second rotating shaft (12).

7. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The movable plate (13) forms a rotating structure with the driving plate (15) through the third rotating shaft (14).

8. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The drive plate (15) and multiple sets of second heat dissipation plates (16) form a fixed structure.

9. The oil-immersed on-load tap-changing distribution transformer according to claim 1, characterized in that, The main body (1) of the power distribution transformer is equipped with a temperature sensor, which is electrically connected to the control module, and the control module is electrically connected to the drive motor (4).

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