Noise reduction and shock absorption type transformer

Abstract

The invention belongs to the technical field of transformers, and particularly discloses a noise reduction and shock absorption type transformer which comprises a sound insulation sealing box, a mounting base is arranged at the bottom of the sound insulation sealing box, an extension box is arranged at the top of the sound insulation sealing box, and wiring holes are evenly distributed in the top of the extension box. The interior of the box is divided into the second air chamber and the first air chamber through the first partition plate, the second air chamber and the first air chamber serve as a main sound source area and a buffer area respectively, all external physical interfaces are arranged on the first air chamber or more external extension boxes, and therefore a stepped noise attenuation path is constructed; according to the structure, no matter whether noise tries to leak out through the cable hole or the heat dissipation air channel, the noise must be attenuated through one cavity, so that on the premise that necessary electrical connection and heat dissipation ventilation of equipment are guaranteed, all-around and high-efficiency suppression of the noise of the transformer, especially medium-high frequency aerodynamic noise is achieved, and the noise reduction effect is achieved. The method is especially suitable for a residential area environment sensitive to noise.

Description

Technical Field

[0001] This invention belongs to the field of transformers, and specifically discloses a noise-reducing and vibration-damping transformer. Background Technology

[0002] Transformers, as core equipment in power systems that perform voltage and current transformations, are used in multiple fields, and some transformers need to be located near residential areas. The noise generated by these devices during operation can easily affect the living comfort of nearby residents. Therefore, noise reduction is an important consideration in the design and placement of transformers near residential areas.

[0003] Existing noise reduction solutions for transformers in residential areas mostly involve placing noise-absorbing materials around the equipment. This method is simple to operate, relatively inexpensive to implement, and can block noise transmission to a certain extent. However, some noise originates from the transformer's own vibration, and external barriers alone cannot effectively block this type of vibration noise. Furthermore, covering the transformer entirely with noise-absorbing materials creates a relatively sealed space around it, obstructing airflow and indirectly affecting the equipment's heat dissipation. Therefore, we propose a noise-reducing and vibration-damping transformer. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a noise-reducing and vibration-damping transformer to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides a noise-reducing and vibration-damping transformer, comprising a soundproof enclosure, a mounting base at the bottom of the soundproof enclosure, an extension box at the top of the soundproof enclosure, and evenly distributed wiring holes at the top of the extension box. A transformer body is mounted inside the soundproof enclosure via a vibration-damping support. The transformer body includes a main body portion mounted on the vibration-damping support, and a connecting portion on the main body portion. The soundproof enclosure is divided into a first air chamber and a second air chamber from top to bottom by a first partition, with the main body portion and the connecting portion respectively located within the second air chamber and the first air chamber. The soundproof enclosure also includes an exhaust chamber communicating with the first air chamber. A pair of second air inlets and a first air inlet are symmetrically arranged on the outer wall of the soundproof enclosure, and the second air inlets and the first air inlets are connected to the first air chamber via a second air port and a first air port, respectively.

[0006] In the above technical solution, preferably, the vibration damping support includes a movable seat body disposed on the bottom surface of the main body, a fixed seat body disposed inside the soundproof enclosure, and a plurality of elastic vibration damping parts disposed between the fixed seat body and the movable seat body.

[0007] In the above technical solution, preferably, lateral heat dissipation parts are provided on both sides of the main body, and the air inlet and air outlet of the lateral heat dissipation parts are connected to the first air chamber through connecting pipes.

[0008] In the above technical solution, preferably, the first air chamber is divided into an air inlet chamber and an air outlet chamber by a second partition. The air inlet end and the air outlet end of the lateral heat dissipation part are respectively connected to the air inlet chamber and the air outlet chamber. The exhaust chamber is connected to the air outlet chamber. The air inlet chamber is connected to the first air inlet pipe and the second air inlet pipe through a first air port and a second air port.

[0009] In the above technical solution, preferably, the connecting part is located in the air outlet chamber.

[0010] In the above technical solution, preferably, both the second air inlet pipe and the first air inlet pipe are configured to extend along the outer wall of the soundproof enclosure, and the outer wall of the first air inlet pipe is attached to the outer wall of the air outlet.

[0011] In the above technical solution, preferably, the first partition is attached to the connecting part by an insulating elastic strip.

[0012] In the above technical solution, preferably, the soundproof enclosure is further provided with an air inlet pipe switching mechanism. The air inlet pipe switching mechanism includes an electric push rod provided in the soundproof enclosure. The output end of the electric push rod is provided with a drive rod. The bottom of the drive rod is provided with a sealing plate, and the sealing plate is slidably installed on the inner wall of the air inlet chamber.

[0013] In the above technical solution, preferably, a protective frame is provided on the outer wall of the soundproof enclosure, and both the second air inlet pipe and the first air inlet pipe are located inside the protective frame, and a dustproof net is provided on one side of the protective frame.

[0014] In the above technical solution, preferably, temperature sensors are installed in both the air outlet chamber and the air inlet chamber.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The enclosure is divided into a second chamber and a first chamber by a first partition, serving as the main sound source area and a buffer zone, respectively. All external physical interfaces are located in the first chamber or an extension chamber further out, thus creating a stepped noise attenuation path. This structure ensures that no matter how much noise tries to escape through cable holes or cooling ducts, it must pass through a cavity for attenuation. This achieves comprehensive and efficient suppression of transformer noise, especially mid-to-high frequency aerodynamic noise, while ensuring necessary electrical connections and ventilation. It is particularly suitable for noise-sensitive residential environments. At the same time, this design allows unobstructed airflow to ensure heat dissipation efficiency, while noise cannot escape in a straight line with the airflow. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the soundproof enclosure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the soundproof enclosure of the present invention;

[0019] Figure 3 This is a schematic diagram of the main structure of the transformer of the present invention;

[0020] Figure 4 This is a schematic diagram of the air inlet duct switching mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram showing the position and structure of the first and second air ports of the present invention;

[0022] Figure 6 This is a schematic diagram of the positions of the first and second air inlet pipes of the present invention from a first-view perspective.

[0023] Figure 7 This is a schematic diagram of the positions of the first and second air inlet pipes of the present invention from a second perspective.

[0024] Figure 8 This is a schematic diagram of the overall structure of the present invention.

[0025] In the diagram: 1. Soundproof enclosure; 2. Vibration damping support; 3. Transformer body; 4. Mounting base; 5. Extension box; 6. Wiring hole; 7. First partition; 8. First air chamber; 9. Second air chamber; 10. Second partition; 11. Air inlet chamber; 12. Air outlet chamber; 13. Exhaust chamber; 14. Air inlet pipe switching mechanism; 15. Connecting part; 16. Connecting pipe; 17. Main body; 18. Lateral heat dissipation part; 19. Insulating elastic band; 20. Movable seat; 21. Fixed seat; 22. Elastic vibration damping part; 23. Electric push rod; 24. Drive rod; 25. Sealing plate; 26. First air inlet; 27. Second air inlet; 28. Second air inlet pipe; 29. ​​First air inlet pipe; 30. Protective frame; 31. Dustproof net. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0028] exist Figure 1-8In the specific embodiment of the noise reduction and vibration damping transformer shown, the soundproof enclosure 1 constitutes the main outer cover and primary sound insulation barrier of the equipment. Its bottom is fixed by the mounting base 4, and an extension box 5 is provided on the top. The extension box is connected to the interior of the soundproof enclosure, and its top is provided with evenly distributed wiring holes 6 for cable outgoing, thereby forming an additional sound insulation extension section at the physical connection point.

[0029] The core improvements of this invention lie in the optimized partitioning of the internal chambers, vibration isolation, and intelligent air duct design. Specific implementation methods are as follows:

[0030] The soundproof enclosure 1 is divided into a first air chamber 8 and a second air chamber 9 in the horizontal direction by a first partition 7. The transformer body 3 is deconstructed into the main body 17, which is the main source of noise and vibration, and the electrical wiring connection part 15, which are respectively housed in the second air chamber 9 and the first air chamber 8. The first partition 7 and the connection part 15 are sealed together by an insulating elastic band 19. This elastic connection ensures the separation of the air chambers and electrical insulation, while allowing the connection part to undergo limited displacement with the main body to avoid rigid pulling. After the noise is generated from the main body 17, it needs to penetrate or bypass the isolation of the first partition 7, be attenuated in the first air chamber 8, and then be blocked by the extension box 5 before finally being transmitted from the wiring hole 6. This path constitutes a stepped multi-layer soundproof structure, which effectively attenuates the noise that escapes through the cable opening.

[0031] The main body 17 is installed inside the soundproof enclosure 1 via a vibration damping support 2. The vibration damping support 2 includes a movable seat 20 fixed to the bottom surface of the main body, a fixed seat 21 fixed inside the soundproof enclosure 1, and several elastic vibration damping parts 22 disposed between the two. This structure flexibly decouples the core vibration source of the transformer from the enclosure, which can significantly suppress the transmission of noise. The elastic vibration damping parts 22 can be set as spring dampers or vibration damping supports, which can alleviate the degree of vibration.

[0032] For heat dissipation, lateral heat dissipation sections 18 are provided on both sides of the main body 17. These lateral heat dissipation sections 18 are existing technology and include heat dissipation fins and a frame. Fans are installed on both sides of the frame to guide airflow and remove heat from the heat dissipation fins. The advantage of this design is that the heat dissipation duct is integrated into the sound insulation system. The first air chamber 8 is further divided into an air inlet chamber 11 and an air outlet chamber 12 by a second partition 10. The air inlet and outlet ends of the lateral heat dissipation sections 18 are connected to the air inlet chamber 11 and the air outlet chamber 12 respectively via connecting pipes 16. External air is introduced through a pair of first air inlet pipes 29 and second air inlet pipes 28 located on the outer wall of the soundproof enclosure 1. These pipes are connected to the air inlet chamber 11 via first air inlets 26 and second air inlets 27 respectively. After the air flows through the lateral heat dissipation section 18 and carries away the heat, it enters the air outlet chamber 12 and is finally discharged through the exhaust chamber 13 connected to it. The connecting part 15 is arranged in the air outlet chamber 12 so that the air before discharge can flow over its surface to achieve auxiliary heat dissipation of the connecting part. It should be noted that the first air inlet pipe 29 and the second air inlet pipe 28 are both set as flexible hoses to adapt to the deviation caused by vibration. The lateral heat dissipation section 18 is connected to the second air chamber 8 through the first air inlet pipe 29 and the second air inlet pipe 28, which will bring a certain amount of noise transmission. The noise passes through the second air chamber 8 and then extends its path through the first air inlet pipe 29 or the second air inlet pipe 28 and the exhaust chamber 13 to reduce the noise to a certain extent.

[0033] During transformer operation, the electromagnetic and vibration noise generated by the main body 17 is primarily contained within the second air chamber 9. For this noise to propagate through the top cable outlet, it must first undergo initial attenuation and blocking through the first partition 7 and its insulating elastic band 19 interface before entering the first air chamber 8. Within the first air chamber 8, particularly the outlet chamber 12, the noise mixes with the cooling airflow and is absorbed and reflected by the chamber walls, resulting in a second attenuation. Subsequently, the noise propagates with the airflow or directly to the extension box 5. This extension structure increases the propagation path and provides additional sound-absorbing and insulating interfaces, achieving a third attenuation. Finally... Only then can a small amount escape from the wiring hole 6. Similarly, the first air inlet pipe 29, the second air inlet pipe 28, and the exhaust chamber 13, which are opened for heat dissipation, are all directly connected to the first air chamber 8 rather than the second air chamber 9. Before the noise reaches these air vents from the main body, it has already undergone at least one effective blockage through the first partition 7, thereby greatly reducing the noise energy leaking out through the heat dissipation air duct. The small amount of noise transmitted through the first air inlet pipe 29 and the second air inlet pipe 28 passes through the second air chamber 8, and then extends its path through the first air inlet pipe 29 or the second air inlet pipe 28 and the exhaust chamber 13 respectively to achieve a certain degree of noise reduction.

[0034] The first partition 7 divides the interior of the enclosure into a second chamber 9 and a first chamber 8, which serve as the main sound source area and a buffer zone, respectively. All external physical interfaces are located in the first chamber 8 or an extension chamber 5 further outside, thus creating a stepped noise attenuation path. This structure ensures that no matter how much noise tries to escape through cable holes or heat dissipation ducts, it must pass through a cavity for attenuation. This achieves comprehensive and efficient suppression of transformer noise, especially mid-to-high frequency aerodynamic noise, while ensuring necessary electrical connections and heat dissipation ventilation. It is particularly suitable for noise-sensitive residential environments. At the same time, this design allows unobstructed airflow to ensure heat dissipation efficiency, while noise cannot escape in a straight line with the airflow.

[0035] To further improve heat dissipation efficiency and cope with different operating conditions, an air inlet duct switching mechanism 14 is provided. This mechanism includes an electric push rod 23 installed in a soundproof enclosure, the output end of which is connected to a drive rod 24. A sealing plate 25 that can slide on the inner wall of the air inlet chamber 11 is provided at the bottom of the rod. The first air inlet duct 29 and the second air inlet duct 28 are enclosed in a protective frame 30, with a dustproof net 31 on the side of the frame. The advantage of this design is that the wall of the first air inlet duct 29 is tightly fitted to the outer wall of the air outlet chamber 12, allowing the intake air to undergo pre-cooling heat exchange with the hot air in the air outlet chamber 12. The second air inlet duct 28 does not have this design. Temperature sensors are installed in both the air inlet chamber 11 and the air outlet chamber 12. When the system detects that the air inlet temperature is too high, indicating insufficient pre-cooling effect or high ambient temperature, it controls the electric push rod 23 to drive the sealing plate 25 to slide, close the first air port 26, open the second air port 27, and switch to drawing in lower-temperature ambient air that has not been preheated from the second air inlet pipe 28, thereby ensuring the forced cooling effect on the transformer body. It should be noted that in order to improve the cooling effect, increasing the heat exchange efficiency between the air outlet chamber 12 and the first air inlet pipe 29 by adding heat conduction plates or heat dissipation fins is still within the protection scope of this application.

[0036] The vibration generated by the main body 17 during operation is absorbed and buffered by the elastic damping part 22, preventing the violent vibration from being transmitted to the soundproof enclosure 1 and thus radiating as low-frequency structural noise. At the same time, based on the feedback from the temperature sensor, the external cooling air is intelligently selected by the air inlet switching mechanism 14 to either pre-cool through the first air inlet 29 or directly enter the air inlet chamber 11 through the second air inlet 28. Subsequently, the air is guided to the side heat dissipation part 18 for efficient cooling of the main body. The air after absorbing heat is discharged into the air outlet chamber 12 and flows through the connecting part 15 located therein before being discharged to dissipate heat. Finally, the exhaust air is discharged outside the enclosure through the exhaust chamber 13. The entire air duct is physically isolated from the second air chamber 9, which generates the main noise.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A noise-reducing and vibration-damping transformer, comprising a soundproof enclosure (1), wherein a mounting base (4) is provided at the bottom of the soundproof enclosure (1), and an extension box (5) is provided at the top of the soundproof enclosure (1), wherein evenly distributed wiring holes (6) are provided at the top of the extension box (5), characterized in that, The soundproof enclosure (1) is equipped with a transformer body (3) through a vibration damping support (2). The transformer body (3) includes a main body (17) on the vibration damping support (2) and a connecting part (15) on the main body (17). The soundproof enclosure (1) is divided into a first air chamber (8) and a second air chamber (9) from top to bottom by a first partition (7). The main body (17) and the connecting part (15) are respectively located in the second air chamber (9) and the first air chamber (8). The soundproof enclosure (1) is also equipped with an exhaust chamber (13) that communicates with the first air chamber (8). A pair of second air inlet pipes (28) and a first air inlet pipe (29) are symmetrically opened on the outer wall of the soundproof enclosure (1). The second air inlet pipes (28) and the first air inlet pipes (29) are respectively connected to the first air chamber (8) through a second air port (27) and a first air port (26).

2. The noise-reducing and vibration-damping transformer according to claim 1, characterized in that, The vibration damping support (2) includes a movable seat (20) disposed on the bottom surface of the main body (17), a fixed seat (21) is disposed inside the soundproof enclosure (1), and a plurality of elastic vibration damping parts (22) are disposed between the fixed seat (21) and the movable seat (20).

3. The noise-reducing and vibration-damping transformer according to claim 1, characterized in that, The main body (17) is provided with side heat dissipation parts (18) on both sides. The air inlet and air outlet of the side heat dissipation parts (18) are connected to the first air chamber (8) through the connecting pipe (16).

4. A noise-reducing and vibration-damping transformer according to claim 3, characterized in that, The first air chamber (8) is divided into an air inlet chamber (11) and an air outlet chamber (12) by a second partition (10). The air inlet end and the air outlet end of the side heat dissipation part (18) are connected to the air inlet chamber (11) and the air outlet chamber (12) respectively. The exhaust chamber (13) is connected to the air outlet chamber (12). The air inlet chamber (11) is connected to the first air inlet pipe (29) and the second air inlet pipe (28) through the first air port (26) and the second air port (27).

5. A noise-reducing and vibration-damping transformer according to claim 4, characterized in that, The connecting part (15) is located inside the air outlet chamber (12).

6. A noise-reducing and vibration-damping transformer according to claim 4, characterized in that, The second air inlet pipe (28) and the first air inlet pipe (29) are both configured to extend along the outer wall of the soundproof enclosure (1), and the outer wall of the first air inlet pipe (29) is attached to the outer wall of the air outlet chamber (12).

7. A noise-reducing and vibration-damping transformer according to claim 1, characterized in that, The first partition (7) is attached to the connecting part (15) by an insulating elastic band (19).

8. A noise-reducing and vibration-damping transformer according to claim 4, characterized in that, The soundproof enclosure (1) is also equipped with an air inlet pipe switching mechanism (14). The air inlet pipe switching mechanism (14) includes an electric push rod (23) installed in the soundproof enclosure (1). The output end of the electric push rod (23) is equipped with a drive rod (24). The bottom of the drive rod (24) is equipped with a sealing plate (25), and the sealing plate (25) is slidably installed on the inner wall of the air inlet chamber (11).

9. A noise-reducing and vibration-damping transformer according to claim 1, characterized in that, The soundproof enclosure (1) is provided with a protective frame (30) on its outer wall, and the second air inlet pipe (28) and the first air inlet pipe (29) are both located inside the protective frame (30). A dustproof net (31) is provided on one side of the protective frame (30).

10. A noise-reducing and vibration-damping transformer according to claim 4, characterized in that, Temperature sensors are installed in both the air outlet chamber (12) and the air inlet chamber (11).

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