Noise reduction device for dry-type transformer

Abstract

The utility model discloses a noise reduction device for a dry-type transformer, which relates to the technical field of transformers, and comprises a sound insulation cover, a heat dissipation device and a noise reduction device, by arranging the heat dissipation device and the sound reduction device, the inner walls of the support and the rotating rod base are rotationally connected with the balls through the sliding grooves, the rotating rod can meet the requirements for airflow in different directions in the rotating process, air circulation in the sound insulation cover is promoted, and even if certain vibration is generated in the operation process of the transformer, the noise is reduced. Vibration can be buffered to a certain extent through cooperation of the balls and the sliding grooves, part abrasion and noise increase caused by vibration are reduced, the compression springs push the sliding blocks and the limiting rods to limit the fixing buckles, it is guaranteed that the sound insulation cotton plate is not prone to loosening or falling off in the operation process of the transformer, and therefore the sound insulation and noise reduction effects are continuously and effectively achieved; and heat can be transferred more quickly through the heat-conducting fins, so that the heat is prevented from being accumulated around the transformer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a noise reduction device for dry-type transformers. Background Technology

[0002] In modern power systems, dry-type transformers are widely used in urban power grids, commercial buildings, hospitals, subways and other places with high requirements for safety and environment due to their significant advantages such as fire resistance, moisture resistance and no need for insulating oil. However, dry-type transformers face two major problems during operation: heat dissipation and noise.

[0003] Currently, most heat dissipation and noise reduction devices for dry-type transformers on the market are independent of each other and do not fully consider the synergistic effect between the two. The vibration and noise generated by the heat dissipation device during operation may have a negative impact on the noise reduction effect, while the noise reduction measures may hinder air circulation to some extent. In addition, the bearing wear of the cooling device fan of the dry-type transformer when it rotates at high speed will also lead to increased noise. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a noise reduction device for dry-type transformers, which solves the problem that heat dissipation and noise reduction devices can work together, and that the noise increases due to bearing wear when the cooling fan of a dry-type transformer rotates at high speed.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction device for a dry-type transformer, comprising: a soundproof cover, wherein a heat dissipation device is fixedly connected to the bottom end of the soundproof cover, and a heat-conducting sheet is fixedly connected to the inner wall of the soundproof cover; a noise reduction device, wherein the outer wall of the noise reduction device is fixedly connected to the inner wall of the soundproof cover; the heat dissipation device includes a motor, wherein the output end of the motor is rotatably connected to a pulley assembly via a rotating shaft, and a rotating rod is fixedly connected to the end of the pulley assembly away from the rotating shaft, and a tank is rotatably connected to the outer wall of the rotating rod.

[0008] Preferably, the motor is fixedly connected to the top of the soundproof cover via a bracket, and the bottom of the tank is fixedly connected to the top of the soundproof cover.

[0009] Preferably, fan blades are fixedly connected to the outer wall of the rotating rod, and the fan blades are arranged in a circumferential array along the central axis of the rotating rod. The bottom end of the rotating rod is rotatably connected to a bracket via a base. A ball is rotatably connected to the inner wall of the bracket and the base of the rotating rod via a sliding groove. The outer wall of the bracket is fixedly connected to the inner wall of the soundproof enclosure. The fan blades arranged in a circumferential array on the outer wall of the rotating rod can accelerate airflow and dissipate the heat generated by the dry-type transformer in a timely manner. The ball is rotatably connected to the inner wall of the bracket and the base of the rotating rod via a sliding groove, which effectively promotes airflow in the soundproof enclosure and improves heat dissipation efficiency. During operation, a certain amount of vibration is generated. The cooperation between the ball and the sliding groove can also buffer the vibration to a certain extent, reducing component wear and noise increase caused by vibration.

[0010] Preferably, the sound reduction device includes a base plate, the outer wall of which is provided with a sound-insulating cotton board. A fixing buckle is fixedly connected to one end of the sound-insulating cotton board near the base plate, and the other end of the base plate away from the sound-insulating cotton board is fixedly connected to the inner wall of the soundproof cover, allowing the sound-insulating cotton board to be securely installed on the base plate. When the sound-insulating cotton board is installed, the fixing buckle is inserted into the base plate.

[0011] Preferably, the outer wall of the fixing buckle is symmetrically slidably connected with a limiting rod, and both ends of the limiting rod are fixedly connected with sliders. The side wall of the slider is fixedly connected with a compression spring. The compression spring pushes the slider and the limiting rod to restrict the fixing buckle, ensuring that the sound insulation cotton board will not easily loosen or fall off during the operation of the transformer.

[0012] Preferably, the outer wall of the slider is slidably connected to the inner wall of the base plate, and the end of the compression spring away from the slider is fixedly connected to the inner wall of the base plate.

[0013] (III) Beneficial Effects

[0014] This invention provides a noise reduction device for dry-type transformers. It has the following beneficial effects:

[0015] This utility model achieves synergistic heat dissipation and noise reduction by incorporating a heat dissipation device and a noise reduction device. The inner walls of the bracket and the rotating rod base are rotatably connected to a ball via a sliding groove. This structure allows the rotating rod to adapt to airflow requirements in different directions during rotation, promoting air circulation within the soundproof enclosure. Even if the transformer experiences some vibration during operation, the cooperation between the ball and the sliding groove can buffer the vibration to a certain extent, reducing component wear and noise increase caused by vibration. The compression spring pushes the slider and the limiting rod to restrict the fixing buckle, ensuring that the sound insulation cotton board will not easily loosen or fall off during transformer operation, thus continuously and effectively playing its role in sound insulation and noise reduction. The heat-conducting sheet allows heat to be transferred more quickly, preventing heat from accumulating around the transformer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the heat dissipation device of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the bracket of this utility model;

[0020] Figure 5 This is a schematic diagram of the sound reduction device of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the noise reduction device of this utility model;

[0022] Figure 7 This utility model Figure 6 A magnified structural diagram of point A in the middle.

[0023] In the diagram: 1. Soundproof cover; 2. Heat dissipation device; 20. Motor; 21. Pulley assembly; 22. Rotating rod; 23. Tank body; 24. Fan blade; 25. Support; 26. Sphere; 3. Noise reduction device; 30. Base plate; 31. Sound insulation cotton board; 32. Fixing buckle; 33. Limiting rod; 34. Slider; 35. Compression spring; 4. Heat conduction plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figure 1-7 This utility model provides a technical solution: a noise reduction device for dry-type transformers, comprising:

[0027] The soundproof cover 1 has a heat dissipation device 2 fixedly connected to its bottom end, and a heat-conducting sheet 4 fixedly connected to its inner wall.

[0028] The sound reduction device 3 is fixedly connected to the inner wall of the soundproof cover 1.

[0029] The heat dissipation device 2 includes a motor 20. The output end of the motor 20 is rotatably connected to a pulley group 21 via a rotating shaft. A rotating rod 22 is fixedly connected to the end of the pulley group 21 away from the rotating shaft. A tank 23 is rotatably connected to the outer wall of the rotating rod 22. The motor 20 is fixedly connected to the top of the soundproof cover 1 via a bracket 25. The bottom end of the tank 23 is fixedly connected to the top of the soundproof cover 1.

[0030] The outer wall of the rotating rod 22 is fixedly connected to the fan blades 24, which are arranged in a circular array along the central axis of the rotating rod 22. The bottom end of the rotating rod 22 is rotatably connected to the bracket 25 through the base. The inner wall of the bracket 25 and the base of the rotating rod 22 is rotatably connected to the ball 26 through the slide groove. The outer wall of the bracket 25 is fixedly connected to the inner wall of the soundproof cover 1.

[0031] The sound reduction device 3 includes a base plate 30, and a sound insulation cotton board 31 is provided on the outer wall of the base plate 30. A fixing buckle 32 is fixedly connected to one end of the sound insulation cotton board 31 near the base plate 30, and the other end of the base plate 30 away from the sound insulation cotton board 31 is fixedly connected to the inner wall of the soundproof cover 1.

[0032] The outer wall of the fixing buckle 32 is symmetrically slidably connected to the limiting rod 33. The two ends of the limiting rod 33 are fixedly connected to the slider 34. The side wall of the slider 34 is fixedly connected to the compression spring 35. The outer wall of the slider 34 is slidably connected to the inner wall of the base plate 30. The end of the compression spring 35 away from the slider 34 is fixedly connected to the inner wall of the base plate 30.

[0033] When in use, the heat dissipation device 2 of the transformer rotates at high speed, and the interaction between the blades and the air will generate aerodynamic noise. Its soundproof cover 1 performs preliminary noise reduction treatment, and the internal noise reduction device absorbs and weakens the noise generated inside. The heat conduction plate 4 located outside the soundproof cover 1 allows heat to be transferred more quickly and avoids heat accumulation around the transformer.

[0034] When the transformer is running, after the motor 20 in the heat dissipation device 2 starts, the shaft at the output end begins to rotate. During this process, because the motor 20 is connected to the pulley group 21 through the shaft, the pulley group 21 drives the rotating rod 22 to rotate inside the tank 23. The fan blades 24 arranged in a circular array on the outer wall of the rotating rod 22 rotate, exhausting the hot air inside the soundproof cover 1. During the rotation of the rotating rod 22, because the bottom end of the rotating rod 22 is rotatably connected to the inner wall of the support 25 through the base, the rotating rod 22 drives the fan blades 24 to rotate. The ball 26, which is rotatably connected to the base and directly to the inner wall, rotates in the groove, reducing friction, thereby reducing vibration and noise generation.

[0035] The sound reduction device 3 is installed on the inner wall of the soundproof cover 1, and its base plate 30 is fixedly connected to the inner wall of the soundproof cover 1. The sound insulation cotton board 31 is installed on the base plate 30 by the fixing buckle 32. When the fixing buckle 32 is inserted into the base plate 30, the limiting rod 33 symmetrically slidably connected to the outer wall of the fixing buckle 32 is squeezed, and the sliders 34 at both ends of the limiting rod 33 slide on the inner wall of the base plate 30 and compress the compression spring 35.

[0036] Once the fixing buckle 32 reaches the appropriate position, the elastic force of the compression spring 35 pushes the slider 34 and the limiting rod 33 to reset, thus securing the fixing buckle 32 and firmly fixing the sound insulation cotton board 31 to the base plate 30. The sound insulation cotton board 31 has a rich porous structure inside. When noise propagates to the sound insulation cotton board 31, the sound waves are continuously reflected and scattered in these pores, and the sound energy is gradually converted into heat energy and consumed, thereby effectively reducing the intensity of the noise and continuously playing a role in sound insulation and noise reduction.

[0037] When the sound reduction effect is reduced later, the sound insulation panel can be pulled out from the outer wall of the base plate 30. During this process, the fixing buckle 32 slides on the inner wall of the limiting rod 33. Then, the new sound insulation cotton board 31 can be fixed to the outer wall of the base plate 30.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a dry-type transformer, characterized in that, include: A soundproof cover (1) is provided with a heat dissipation device (2) fixedly connected to the bottom end of the soundproof cover (1) and a heat-conducting sheet (4) fixedly connected to the inner wall of the soundproof cover (1). The sound reduction device (3) is fixedly connected to the inner wall of the soundproof cover (1); The heat dissipation device (2) includes a motor (20), the output end of which is rotatably connected to a pulley group (21) via a rotating shaft, and a rotating rod (22) is fixedly connected to the end of the pulley group (21) away from the rotating shaft. A tank (23) is rotatably connected to the outer wall of the rotating rod (22).

2. The noise reduction device for a dry-type transformer according to claim 1, characterized in that: The motor (20) is fixedly connected to the top of the soundproof cover (1) via a bracket (25), and the bottom of the tank (23) is fixedly connected to the top of the soundproof cover (1).

3. The noise reduction device for a dry-type transformer according to claim 2, characterized in that; The outer wall of the rotating rod (22) is fixedly connected to a fan blade (24), which is arranged in a circular array along the central axis of the rotating rod (22). The bottom end of the rotating rod (22) is rotatably connected to a bracket (25) through a base. The inner wall of the bracket (25) and the base of the rotating rod (22) is rotatably connected to a ball (26) through a sliding groove. The outer wall of the bracket (25) is fixedly connected to the inner wall of the soundproof cover (1).

4. The noise reduction device for a dry-type transformer according to claim 1, characterized in that: The sound reduction device (3) includes a base plate (30), and the outer wall of the base plate (30) is provided with a sound insulation cotton board (31). The end of the sound insulation cotton board (31) near the base plate (30) is fixedly connected with a fixing buckle (32), and the end of the base plate (30) away from the sound insulation cotton board (31) is fixedly connected to the inner wall of the soundproof cover (1).

5. The noise reduction device for a dry-type transformer according to claim 4, characterized in that: The outer wall of the fixing buckle (32) is symmetrically connected to a limiting rod (33), and the two ends of the limiting rod (33) are fixedly connected to a slider (34), and the side wall of the slider (34) is fixedly connected to a compression spring (35).

6. The noise reduction device for a dry-type transformer according to claim 5, characterized in that: The outer wall of the slider (34) is slidably connected to the inner wall of the base plate (30), and the end of the compression spring (35) away from the slider (34) is fixedly connected to the inner wall of the base plate (30).

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