Oil-immersed transformer with optimized heat dissipation

Abstract

The utility model relates to transformer technical field discloses an oil -immersed transformer of optimizing heat dissipation, including the box, the box is fixedly connected with several high -voltage bushings, the box is still fixedly connected with the oil tank on one side of high -voltage bushings, and the oil tank is connected with the box through the pipeline, and the box outside is fixedly connected with several radiating fins, and the several radiating fins of box front side and rear side are separately provided with the self -cleaning mechanism, and the self -cleaning mechanism includes several mounting beams. When external airflow pushes the wind -receiving plate, will drive the side beam to move along the guide rail with the help of linear bearing, and then drive the pull rod to move, realize the sliding of multiple groups of mounting blocks and wiping strip on the surface of corresponding radiating fin, and the wiping strip can remove the dust on the radiating fin, avoid dust accumulation to hinder heat dissipation, and when the wind direction changes, then can realize the movement direction change of wind -receiving plate not periodically, can realize the reciprocating motion of wiping strip on the radiating fin not periodically, realize the self -cleaning function of radiating fin.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an oil-immersed transformer with optimized heat dissipation. Background Technology

[0002] An oil-immersed transformer is a power transformer that uses transformer oil as an insulating and cooling medium. It is widely used in the transmission and distribution stages of power systems. It consists of components such as an iron core, windings, oil tank, transformer oil, radiator, bushings, and tap changer. The iron core and windings, as the core of electromagnetic conversion, are sealed in an oil tank filled with transformer oil. When working, the windings are energized with alternating current to generate an alternating magnetic field, and the iron core induces eddy currents to realize the voltage conversion of electrical energy. The transformer oil not only isolates the air to prevent the windings and iron core from getting damp, but also transfers the heat generated by the iron core and windings during operation to the oil tank wall through its own convection, and then dissipates it into the air through the radiator, maintaining the stable operating temperature of the equipment. Some transformers are exposed to the air for extended periods, where dust and particulate matter adhere to the surface of the heat sinks, hindering heat conduction and airflow, reducing heat dissipation efficiency, and causing the transformer oil temperature to rise. Therefore, regular cleaning is necessary. For example, the Chinese utility model patent with publication number CN216597232U, "A Device for Facilitating Transformer Heat Dissipation and Dust Prevention," describes a heat sink fin composed of multiple interconnected cavities that allow airflow between the heat sink and the main heat plate, thus significantly improving heat dissipation efficiency. Furthermore, the heat sink fins can be completely disassembled for dust removal. While this application improves airflow within the main heat plate, manual disassembly and cleaning are still required to remove the dust covering its surface, making the cleaning process cumbersome and potentially affecting transformer operation. Utility Model Content

[0003] The purpose of this invention is to provide an oil-immersed transformer with optimized heat dissipation, which can automatically clean the heat sink without manual disassembly, reducing maintenance and downtime, and effectively solving the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An oil-immersed transformer with optimized heat dissipation includes a housing. Several high-voltage bushings are fixedly connected to the housing. An oil storage tank is also fixedly connected to the housing on one side of the high-voltage bushings. The oil storage tank is connected to the housing via pipelines. Several heat sinks are fixedly connected to the outside of the housing. A self-cleaning mechanism is provided between the heat sinks on the front and rear sides of the housing. The self-cleaning mechanism includes several mounting beams. Two mounting beams are fixedly connected to the front or rear side of the housing. Guide rails are fixedly connected to opposite sides of the two mounting beams. Linear bearings are slidably connected to the guide rails. Side beams are fixedly connected to opposite sides of the two linear bearings. Several tie rods are fixedly connected between the two side beams, and several mounting blocks are fixedly connected between the tie rods. Several clamping plates are fixedly connected to the side of each mounting block opposite to the housing. Wiping strips are movably connected to the side of each mounting block opposite to the corresponding heat sink. Wind-receiving plates are also fixedly connected to the opposite sides of the two side beams.

[0005] As a further preferred embodiment of this utility model, a reinforcing plate is fixedly connected between the side beam and the linear bearing, which can increase the connection strength between the side beam and the linear bearing and ensure the stability of the side beam's suspended movement.

[0006] As a further preferred embodiment of this utility model, a connecting plate is fixedly connected between the two clamping plates, and the two clamping plates are fixedly connected to one side of the mounting block through the connecting plate, which can increase the connection strength between the two clamping plates and the mounting block, so that the two adjacent clamping plates are respectively suspended above and below the same heat sink.

[0007] As a further preferred embodiment of this utility model, the clamp is provided with a slot to provide basic conditions for the installation of the wiping strip.

[0008] As a further preferred embodiment of this utility model, the bottom of the wiping strip is fixedly connected to a plug rod. The longitudinal section of the plug rod is an inverted T-shaped structure. The plug rod is inserted into the corresponding slot, and the side of the wiping strip opposite to the plug rod abuts against the outer surface of the corresponding heat sink. Thus, when the two side beams move along the guide rail due to the wind force from different directions of the air intake plate, they can move on the corresponding heat sink in conjunction with the two pull rods, the mounting block, and the clamping plate, thereby realizing the automatic cleaning of the outer surface of the heat sink by the wiping strip.

[0009] As a further preferred embodiment of this utility model, one end of the air receiving plate is fixedly connected to a top plate, and the top plate is fixedly connected to the side of the side beam opposite to the heat sink. When the air receiving plate is pushed by the airflow of the external environment, it can drive the side beam to slide on the guide rail using linear bearings, thereby driving the pull rod and multiple sets of mounting blocks and clamps to move. When the wind direction of the external environment changes, the multiple sets of mounting blocks, clamps and wiping strips will reciprocate on the heat sink from time to time, realizing the self-cleaning of the heat sink.

[0010] Compared with the prior art, the present invention has the following beneficial effects: In this invention, when the external airflow pushes the air receiving plate, it will drive the side beam to move along the guide rail with the help of linear bearings, which in turn drives the pull rod to move, so that multiple sets of mounting blocks and wiping strips can slide on the corresponding heat sink surface. The wiping strips can remove dust on the heat sink, preventing dust accumulation from hindering heat dissipation. When the wind direction changes, the air receiving plate can change its movement direction irregularly, which can realize the irregular reciprocating movement of the wiping strips on the heat sink, thus realizing the heat sink self-cleaning function. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the heat sink and self-cleaning mechanism of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the mounting block and clamping plate structure of this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the wind-receiving plate structure of this utility model.

[0012] In the diagram: 1. Housing; 2. High-pressure bushing; 3. Oil tank; 4. Heat sink; 5. Mounting beam; 6. Guide rail; 7. Linear bearing; 8. Side beam; 9. Tie rod; 10. Mounting block; 11. Clamping plate; 12. Wiping strip; 13. Air intake plate; 14. Reinforcing plate; 15. Connecting plate; 16. Slot; 17. Insert rod; 18. Top plate; 19. Self-cleaning mechanism. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figures 1-6As shown, this utility model provides an oil-immersed transformer with optimized heat dissipation, including a housing 1. Several high-voltage bushings 2 are fixedly connected to the housing 1. An oil storage tank 3 is also fixedly connected to the housing 1 on one side of the high-voltage bushings 2. The oil storage tank 3 is connected to the housing 1 via a pipeline. Several heat sinks 4 are fixedly connected to the outside of the housing 1. A self-cleaning mechanism 19 is provided between the heat sinks 4 on the front and rear sides of the housing 1. The self-cleaning mechanism 19 includes several mounting beams 5, with two mounting beams 5 fixedly connected to the front or rear side of the housing 1, respectively. Two mounting beams 5 are fixedly connected to guide rails 6 on opposite sides. Linear bearings 7 are slidably connected to guide rails 6. Two side beams 8 are fixedly connected to opposite sides of the two linear bearings 7. Several tie rods 9 are fixedly connected between the two side beams 8. Several mounting blocks 10 are fixedly connected between the tie rods 9. Several clamping plates 11 are fixedly connected to the side of the mounting block 10 opposite to the housing 1. Wiping strips 12 are movably connected to the side of the mounting block 10 opposite to the corresponding heat sink 4. Air receiving plates 13 are also fixedly connected to the opposite sides of the two side beams 8.

[0015] like Figure 3 , Figure 6 As shown, a reinforcing plate 14 is fixedly connected between the side beam 8 and the linear bearing 7, which can increase the connection strength between the side beam 8 and the linear bearing 7 and ensure the stability of the side beam 8 in the air. One end of the wind-receiving plate 13 is fixedly connected to a top plate 18, which is fixedly connected to the side of the side beam 8 opposite to the heat sink 4. When the wind-receiving plate 13 is pushed by the airflow of the external environment, it can drive the side beam 8 to slide on the guide rail 6 using the linear bearing 7, thereby driving the pull rod 9 and multiple sets of mounting blocks 10 and clamping plates 11 to move. When the wind direction of the external environment changes, the multiple sets of mounting blocks 10, clamping plates 11 and wiping strips 12 will reciprocate on the heat sink 4 from time to time, realizing the self-cleaning of the heat sink 4.

[0016] like Figures 2-5 As shown, a connecting plate 15 is fixedly connected between the two clamping plates 11, and the two clamping plates 11 are fixedly connected to one side of the mounting block 10 through the connecting plate 15. This increases the connection strength between the two clamping plates 11 and the mounting block 10, allowing the two adjacent clamping plates 11 to be suspended above and below the same heat sink 4, respectively. The clamping plates 11 have slots 16, providing a basic condition for the installation of the wiping strip 12. The bottom of the wiping strip 12 is fixedly connected to a plug rod 17. The longitudinal section of the plug rod 17 is an inverted T-shaped structure. The plug rod 17 is inserted into the corresponding slot 16, while the side of the wiping strip 12 away from the plug rod 17 abuts against the outer surface of the corresponding heat sink 4. Thus, when the two side beams 8 move along the guide rail 6 due to the wind force from different directions of the air-cooled plate 13, they can move on the corresponding heat sink 4 in conjunction with the two pull rods 9, the mounting block 10, and the clamping plates 11, thereby enabling the wiping strip 12 to automatically clean the outer surface of the heat sink 4.

[0017] It should be noted that this utility model is an oil-immersed transformer with optimized heat dissipation. When the transformer is running, the heat generated by the iron core and windings inside the tank 1 is first transferred to the transformer oil inside the tank. The heated transformer oil has a lower density and flows upward. The transformer oil with a lower temperature is replenished from below, forming natural convection, which transfers the heat to the wall of the tank 1. As a result, the heat dissipation fins 4 on the outside of the tank 1 increase the heat dissipation area. The heat on the wall of the tank 1 is transferred to the heat dissipation fins 4 through heat conduction, and then the heat dissipation fins 4 dissipate the heat into the surrounding air, thus achieving initial heat dissipation. When dust adheres to the surface of the heat sink 4, the airflow in the external environment will periodically push the air receiving plate 13. After the air receiving plate 13 is subjected to force, it drives the side beam 8 to slide along the guide rail 6 with the help of the linear bearing 7, and at the same time drives the pull rod 9 to move synchronously. Thus, during the movement of the pull rod 9, it will drive the mounting block 10 connected to it to move. The mounting block 10 will further drive the clamping plate 11 and the wiping strip 12 to move. When the wiping strip 12 moves, it contacts the surface of the heat sink 4 and wipes away the dust on the surface of the heat sink 4, so as to avoid the accumulation of dust and hinder the heat transfer. When the linear bearing 7 moves to one end of the guide rail 6, it will be restricted by the limiting block to prevent the linear bearing 7 from falling off the guide rail 6. When the external wind direction changes, the direction of the airflow pushing the air receiving plate 13 also changes, thereby driving the side beam 8, pull rod 9, mounting block 10 and wiping strip 12 to move in the opposite direction, so as to realize the reciprocating cleaning of the surface of the heat sink 4 by the wiping strip 12.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed transformer with optimized heat dissipation, characterized in that: The enclosure includes a housing (1), on which several high-pressure bushings (2) are fixedly connected. An oil storage tank (3) is also fixedly connected to the housing (1) on one side of the high-pressure bushings (2). The oil storage tank (3) is connected to the housing (1) through a pipeline. Several heat sinks (4) are fixedly connected to the outside of the housing (1). A self-cleaning mechanism (19) is provided between the heat sinks (4) on the front and rear sides of the housing (1). The self-cleaning mechanism (19) includes several mounting beams (5). Two mounting beams (5) are fixedly connected to the front or rear side of the housing (1), respectively. The two mounting beams (5) are opposite to each other. Each side is fixedly connected to a guide rail (6), and a linear bearing (7) is slidably connected to the guide rail (6). A side beam (8) is fixedly connected to the opposite side of the two linear bearings (7). A number of tie rods (9) are fixedly connected between the two side beams (8), and a number of mounting blocks (10) are fixedly connected between the tie rods (9). A number of clamps (11) are fixedly connected to the side of the mounting block (10) relative to the box (1). A wiping strip (12) is movably connected to the side of the mounting block (10) relative to the corresponding heat sink (4). A wind-receiving plate (13) is also fixedly connected to the opposite side of the two side beams (8).

2. The oil-immersed transformer with optimized heat dissipation according to claim 1, characterized in that: A reinforcing plate (14) is fixedly connected between the side beam (8) and the linear bearing (7).

3. The oil-immersed transformer with optimized heat dissipation according to claim 1, characterized in that: A connecting plate (15) is fixedly connected between the two clamping plates (11), and the two clamping plates (11) are fixedly connected to one side of the mounting block (10) through the connecting plate (15).

4. The oil-immersed transformer with optimized heat dissipation according to claim 1, characterized in that: The clamp (11) has a slot (16) inside.

5. An oil-immersed transformer with optimized heat dissipation according to claim 4, characterized in that: The bottom of the wiping strip (12) is fixedly connected to a plug (17). The longitudinal section of the plug (17) is an inverted T-shaped structure. The plug (17) is inserted into the corresponding slot (16), while the side of the wiping strip (12) opposite to the plug (17) abuts against the outer surface of the corresponding heat sink (4).

6. An oil-immersed transformer with optimized heat dissipation according to claim 1, characterized in that: One end of the air receiving plate (13) is fixedly connected to a top plate (18), and the top plate (18) is fixedly connected to the side of the side beam (8) opposite to the heat sink (4).

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