Noise reduction type dry-type transformer

Abstract

The utility model discloses a noise reduction type dry-type transformer. The noise reduction type dry-type transformer comprises a noise reduction shell and a transformer body installed in the noise reduction shell. A containing cavity is formed in the noise reduction shell, the transformer body is fixed to the bottom of the noise reduction shell, and the transformer body is located in the middle of the containing cavity; the noise reduction shell is provided with a plurality of sound insulation plates, the sound insulation plates are located on the periphery of the transformer body, a noise reduction cavity is formed between the sound insulation plates and the noise reduction shell, a plurality of pieces of sound absorption cotton are arranged in the noise reduction cavity, and the sound absorption cotton is attached to the inner wall of the noise reduction shell. According to the utility model, the plurality of sound wave reflecting plates are arranged, and the sound waves are guided to the appointed direction by the plurality of sound wave reflecting plates and are mutually counteracted with the corresponding sound waves, so that the risk that noise generated by the transformer is spread to the outside is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable connector assemblies, and in particular to a noise-reducing dry-type transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil, and the iron core. Dry-type transformers are one type of transformer and are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery equipment, and other places.

[0003] Currently, existing transformer casings do not have noise reduction components. Since the internal transformer generates a lot of noise during operation, excessive noise can affect the daily lives and rest of nearby residents. The lack of noise reduction components makes it difficult for the transformer casing to reduce the noise generated by the transformer operation, thus reducing the practicality of the transformer casing. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a noise-reducing dry-type transformer. By setting multiple sound wave reflectors, the multiple sound wave reflectors guide the sound waves to a designated direction, and the corresponding sound waves cancel each other out, thereby reducing the risk of the noise generated by the transformer being transmitted to the outside world.

[0005] Accordingly, this utility model proposes a noise-reducing dry-type transformer, which includes: a noise-reducing housing and a transformer body installed inside the noise-reducing housing;

[0006] The noise-reducing housing has a receiving cavity, the transformer body is fixed to the bottom of the noise-reducing housing, and the transformer body is located in the middle of the receiving cavity;

[0007] The noise reduction housing is provided with multiple sound insulation panels, which are located around the transformer body, and a sound-absorbing cavity is formed between the sound insulation panels and the noise reduction housing.

[0008] The silencing cavity is equipped with multiple sound wave reflectors, and the distance between two adjacent sound wave reflectors is equal.

[0009] Preferably, the root of any of the acoustic wave reflectors is fixedly connected to the noise reduction housing, and an angle α is formed between any of the acoustic wave reflectors and the noise reduction housing.

[0010] Preferably, any one of the sound insulation panels extends toward the noise reduction shell to form a plurality of first reflective panels, and any one of the first reflective panels forms an angle β with the sound insulation panel;

[0011] The relation α = β is satisfied.

[0012] Preferably, the acoustic wave reflector and the first reflector are staggered.

[0013] Preferably, the surface of the acoustic wave reflector is provided with a plurality of first sound-absorbing grooves, and the surface of the first reflector is provided with a plurality of second sound-absorbing grooves.

[0014] Preferably, sound-absorbing cotton is provided in any of the sound-absorbing grooves, and sound-absorbing cotton is provided in any of the second sound-absorbing grooves.

[0015] Preferably, a cooling fan is provided at the bottom of the silencing cavity, and sound-absorbing cotton is provided at both the output and input ends of the cooling fan.

[0016] Preferably, the noise-reducing dry-type transformer further includes a fixing mechanism, and the transformer body is connected to the bottom of the noise-reducing housing based on the fixing mechanism.

[0017] Preferably, the transformer body includes a magnetic core and a winding coil, wherein the winding coil is wound on the magnetic core.

[0018] Preferably, the winding coil includes: multiple sets of low-voltage coils and multiple sets of high-voltage coils, with the high-voltage coils surrounding the outside of the low-voltage coils;

[0019] The low-voltage coil is either a cast structure or a bound structure.

[0020] The beneficial effects of this utility model are:

[0021] This invention incorporates multiple sound-insulating panels. The uneven or porous surfaces of these panels scatter sound waves at different angles, thus dispersing the sound wave energy. This allows the noise generated by the transformer to be absorbed and reflected by the sound-insulating panels, further reducing the intensity of noise propagation. Furthermore, this invention includes multiple sound-reflecting panels. After colliding with these panels, sound waves are reflected back to other sound-reflecting panels. The two panels reflect sound waves in opposite directions, which helps to guide the sound waves in the silencing cavity to cancel each other out, reducing the risk of noise generated by the transformer propagating to the outside world. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is a schematic diagram of the structure of the noise-reducing dry-type transformer in this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the noise-reducing shell in this utility model;

[0025] Figure 3 This is a top view of the noise-reducing shell in this utility model;

[0026] Figure 4 This is a schematic diagram of the acoustic wave reflector in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the first reflector in this utility model.

[0028] In the attached diagram, 1 is the noise-reducing outer shell; 10 is the receiving cavity; 11 is the sound insulation plate; 111 is the rectangular hole; 112 is the first reflector; 1121 is the second sound-absorbing groove; 12 is the silencing cavity; 13 is the sound wave reflector; 131 is the first sound-absorbing groove; 2 is the transformer body; 3 is the fixing mechanism; and 4 is the cooling fan. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Figure 1 This invention illustrates the structure of the noise-reducing dry-type transformer. Figure 2 A schematic diagram of the noise-reducing shell in this utility model is shown. Figure 3 The top view of the noise-reducing housing in this invention is shown. Figure 4 A schematic diagram of the acoustic wave reflector in this invention is shown. Figure 5A schematic diagram of the structure of the first reflector in this utility model is shown. The noise-reducing dry transformer includes: a noise-reducing shell 1 and a transformer body 2 installed inside the noise-reducing shell 1; the noise-reducing shell 1 has a receiving cavity 10, the transformer body 2 is fixed to the bottom of the noise-reducing shell 1, and the transformer body 2 is located in the middle of the receiving cavity 10; the noise-reducing shell 1 is provided with multiple sound insulation panels 11, which are located around the transformer body 2, and a sound-absorbing cavity 12 is formed between the sound insulation panels 11 and the noise-reducing shell 1; multiple sound wave reflectors 13 are provided in the sound-absorbing cavity 12, and the distance between two adjacent sound wave reflectors 13 is equal. In this embodiment, four sound insulation panels 11 are provided inside the noise reduction housing 1. The four sound insulation panels 11 surround the transformer body 2 at 360°. The concave or convex surfaces of the sound insulation panels 11 can scatter sound waves at different angles, thereby dispersing the energy of the sound waves. This allows the noise generated by the transformer body 2 to be absorbed and reflected by the sound insulation panels 11, further reducing the intensity of noise propagation. Multiple sound-absorbing cotton pieces are provided in the silencing cavity 12. Each piece of sound-absorbing cotton is placed on the inner wall of the noise reduction housing 1 to absorb sound waves from the inner wall of the noise reduction housing 1, thereby reducing the intensity of noise propagation. The silencing cavity 12 is equipped with twenty-four sound wave reflectors 13. When a sound wave collides with a sound wave reflector 13, it is reflected and the sound wave is reflected to other sound wave reflectors 13. Two sound wave reflectors 13 reflect sound waves in opposite directions, which helps to guide the sound waves in the silencing cavity 12 to cancel each other out and reduce the risk of noise generated by the transformer being transmitted to the outside.

[0031] It should be noted that the distance between two adjacent sound wave reflectors 13 is equal, which reduces the mutual influence between the two adjacent sound wave reflectors 13, preventing the sound waves reflected by the two from not being able to cancel each other out. This helps to guide the sound waves in the silencing cavity 12 to cancel each other out, reducing the risk of the noise generated by the transformer being transmitted to the outside world.

[0032] Furthermore, the root of any of the sound wave reflectors 13 is fixedly connected to the noise reduction housing 1, and an angle α is formed between any of the sound wave reflectors 13 and the noise reduction housing 1. The angle between the sound wave reflectors 13 and the noise reduction housing 1 guides the direction of reflection after the sound wave collides with the sound wave reflector 13, preventing the sound wave from colliding with the sound wave reflector 13 and being reflected onto the noise reduction housing 1. When the transformer body 2 is working, it vibrates and emits sound waves. When the sound waves propagate in space, they are reflected after hitting the sound wave reflectors 13. The uniform arrangement of the sound wave reflectors 13 can effectively guide the sound waves to a designated direction, where they cancel each other out. This avoids the sound waves reflecting in various directions after hitting the sound wave reflectors 13, which would cause sound wave superposition. This helps to guide the sound waves in the silencing cavity 12 to cancel each other out, reducing the risk of noise generated by the transformer being transmitted to the outside.

[0033] Furthermore, each of the sound insulation panels 11 is provided with a plurality of rectangular holes 111, and one side of each of the rectangular holes 111 extends toward the noise reduction housing 1 to form a plurality of first reflectors 112. Each of the first reflectors 112 forms an angle β with the sound insulation panel 11, satisfying the relationship: α=β. Each of the sound insulation panels 11 is provided with five rectangular holes 111, which are used to guide a portion of the sound waves generated by the vibration of the transformer body 2 to the anechoic cavity 12 and to provide a channel for heat transfer to the anechoic cavity 12. Twenty sound wave reflectors 13 are formed on the four sound insulation panels 11, that is, five sound wave reflectors 13 are provided on each side wall, and the distance between two adjacent sound wave reflectors 13 on the same side wall is equal. The first reflector 112 forms an angle β with the sound insulation panel 11, thereby guiding the direction of the sound waves reflected after colliding with the sound insulation panel 11. When the transformer body 2 is working, it vibrates and emits sound waves. When the sound waves propagate in space, they are reflected when they hit the first reflector plate 112. The uniform arrangement of the first reflector plates 112 can effectively guide the sound waves to a designated direction, where they cancel each other out. This avoids the sound waves from being reflected in various directions after hitting the sound wave reflector plate 13, which would cause the sound waves to superimpose. This helps to guide the sound waves in the silencing cavity 12 to cancel each other out, reducing the risk of noise generated by the transformer being transmitted to the outside world.

[0034] It should be noted that the angle α formed between the sound wave reflector 13 and the noise reduction housing 1 is equal to the angle β formed between the first reflector 112 and the sound insulation plate 11, so that the sound waves reflected by the adjacent sound wave reflectors 13 and the first reflector 112 cancel each other out, reducing the risk of noise generated by the transformer being transmitted to the outside.

[0035] Furthermore, the sound wave reflector 13 and the first reflector 112 are staggered. In this embodiment, after the sound wave reflector 13 reflects part of the sound wave, the direction of the reflected sound wave is towards the first reflector 112, and after the first reflector 112 reflects part of the sound wave, the direction of the reflected sound wave is towards the sound wave reflector 13. These two sound waves will cancel each other out after collision, avoiding the sound waves reflected by the sound wave reflector 13 and the first reflector 112 having the same direction, which would cause the sound waves to superimpose and make the emitted noise greater. This helps to reduce the risk of the noise generated by the transformer propagating to the outside world.

[0036] Specifically, one side of the anechoic cavity 12 includes six sound wave reflectors 13 and five first reflectors 112. The five first reflectors 112 are located in the gaps formed by every two sound wave reflectors 13, and the extension lines of the first reflectors form an obtuse angle with the extension lines of adjacent sound wave reflectors. The reflective surfaces of the first reflectors 112 face the sound wave reflectors 13, and the reflective surfaces of the sound wave reflectors 13 face the corresponding first reflector 112 or another sound wave reflector 13. When a sound wave reflector 13 reflects a first sound wave, the first sound wave is directed towards the first reflector 112. Simultaneously, the first reflector 112 reflects a second sound wave, which is directed towards the sound wave reflector 13. The first and second sound waves cancel each other out during propagation, thereby eliminating noise.

[0037] Furthermore, the surface of the sound wave reflector 13 is provided with a plurality of first sound-absorbing grooves 131, and sound-absorbing cotton is disposed within the plurality of first sound-absorbing grooves 131; the surface of the first reflector 112 is provided with a plurality of second sound-absorbing grooves 1121, and sound-absorbing cotton is disposed within the plurality of second sound-absorbing grooves 1121. In this embodiment, ten first sound-absorbing grooves 131 are provided on the surface of any of the sound wave reflectors 13, and similarly, ten second sound-absorbing grooves 1121 are provided on the surface of the first reflector 112. When the sound wave is reflected on the surface of the groove, the propagation path of the sound wave is changed due to the existence of the groove structure, causing the sound wave energy to attenuate during the reflection process, thereby reducing the reflection intensity of the sound wave, and thus reducing the energy of the sound wave in the silencing cavity 12, which is beneficial for the silencing cavity 12 to reduce the noise generated when the transformer body 2 is in operation.

[0038] Furthermore, sound-absorbing cotton is disposed within any of the aforementioned sound-absorbing grooves, and sound-absorbing cotton is disposed within any of the second sound-absorbing grooves 1121. The sound-absorbing cotton typically has an open-pore structure and a loose texture, effectively absorbing sound wave energy. When sound waves enter the sound-absorbing groove and come into contact with the sound-absorbing cotton, the sound wave energy is absorbed by the internal fiber structure of the sound-absorbing cotton and converted into other forms of energy, thereby reducing the reflection intensity of the sound waves. Secondly, the sound-absorbing cotton can absorb some of the sound wave energy, making the distribution of sound waves in the anechoic cavity 12 more uniform, avoiding excessive concentration or dispersion of sound waves in certain areas, thus reducing the probability of sound waves canceling each other out. This facilitates the cancellation of sound waves in the anechoic cavity 12, reducing the noise generated when the transformer body 2 is operating.

[0039] Furthermore, a cooling fan 4 is provided at the bottom of the silencing cavity 12, and sound-absorbing cotton is provided at both the output and input ends of the cooling fan 4. The cooling fan 4 can provide strong airflow and high air volume, thereby effectively dissipating heat from inside the device. In this embodiment, four cooling fans 4 are provided at the bottom of the silencing cavity 12. The four cooling fans 4 are located in four different directions to exchange heat between the air inside the noise-reducing housing 1 and the outside air, accelerating the heat dissipation efficiency inside the noise-reducing housing 1, which helps maintain the normal temperature of the device and reduces the risk of performance degradation or damage caused by overheating of the transformer body 2. The sound-absorbing cotton provided at both the output and input ends of the cooling fan 4 can effectively absorb sound and convert it into heat energy, thereby dissipating the sound and significantly reducing the noise during fan operation.

[0040] Furthermore, the noise-reducing dry-type transformer also includes a fixing mechanism 3, which includes a chassis. The transformer body 2 is connected to the bottom of the noise-reducing housing 1 based on the chassis. The fixing mechanism 3 is used to fix the transformer body 2 to the noise-reducing housing 1, avoiding the risk of vibration of the transformer body 2 during use, which would cause the bottom of the transformer body 2 to repeatedly collide with the noise-reducing housing 1 and generate noise. This helps to reduce the noise emitted by the transformer body 2 during operation.

[0041] Furthermore, the fixing mechanism 3 is integrally formed with the noise reduction shell 1. Through the integral forming design of the fixing mechanism 3 and the noise reduction shell 1, the assembly gap between the fixing mechanism 3 and the noise reduction shell 1 is reduced, the rigidity and sealing of the overall structure are improved, and the vibration of the transformer body 2 and the fixing mechanism 3 together during operation is avoided, which would cause the transformer body 2, the fixing mechanism 3 and the noise reduction shell 1 to collide and generate greater noise. This helps to reduce the noise emitted by the transformer body 2 when it is working.

[0042] It should be noted that the noise-reducing housing 1 is made of metal. Metal has excellent sound absorption properties, and it can effectively absorb and isolate noise, thereby significantly reducing the noise level generated by the equipment or environment. Secondly, metal has high strength and stability, and can withstand significant external forces without easily deforming. This allows the metal noise-reducing housing 1 to maintain its structural integrity and noise-reducing performance during long-term use, extending its service life. Simultaneously, metal also has good corrosion resistance, enabling it to adapt to different environmental and climatic conditions and maintain a stable noise-reducing effect.

[0043] Furthermore, the transformer body 2 includes a magnetic core and a winding coil. The winding coil is wound around the magnetic core, and a predetermined interval is provided between the winding coil and the magnetic core. The magnetic core includes multiple silicon steel sheets, which are bound together into a whole using PET strapping. The whole is divided into a first smaller whole consisting of five silicon steel sheets bound together in the middle region and a second smaller whole consisting of two silicon steel sheets bound together in the end regions. Using PET strapping to bind them into a whole effectively reduces the impact of magnetic core displacement or vibration during operation, reduces the noise emitted by the magnetic core, and also reduces the air gap between the silicon steel sheets, increasing the magnetic permeability and further improving the performance of the transformer.

[0044] Furthermore, the winding coil includes multiple sets of low-voltage coils and multiple sets of high-voltage coils, with the high-voltage coils surrounding the low-voltage coils. The low-voltage coils are either cast or bound. When the low-voltage coils are cast, a mesh insulation layer is provided between adjacent sets of low-voltage coils. This mesh insulation layer reduces the amplitude of low-voltage coil vibration and buffers the vibration, thereby reducing the risk of noise generation during use. When the low-voltage coils are bound, they are fixed in a designated position with PET straps to prevent movement or vibration during use, further reducing the risk of noise generation.

[0045] In summary, this invention, by setting up multiple sound insulation panels, allows sound waves to be scattered at different angles due to their uneven or porous surfaces. This disperses the energy of the sound waves, enabling the noise generated by the transformer to be absorbed and reflected by the sound insulation panels, further reducing the intensity of noise propagation. Furthermore, this invention also includes multiple sound wave reflecting panels. After sound waves collide with the reflecting panels, they are reflected back to other reflecting panels. The two reflecting panels reflect sound waves in opposite directions, which helps to guide the sound waves in the silencing cavity to cancel each other out, reducing the risk of noise generated by the transformer propagating to the outside world.

[0046] Furthermore, the above provides a detailed description of a noise-reducing dry-type transformer provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A noise-reducing dry-type transformer, characterized in that, The noise-reducing dry-type transformer includes: a noise-reducing housing and a transformer body installed inside the noise-reducing housing; The noise-reducing housing has a receiving cavity, the transformer body is fixed to the bottom of the noise-reducing housing, and the transformer body is located in the middle of the receiving cavity; The noise reduction housing is provided with multiple sound insulation panels, which are located around the transformer body, and a sound-absorbing cavity is formed between the sound insulation panels and the noise reduction housing. The silencing cavity is equipped with multiple sound wave reflectors, and the distance between two adjacent sound wave reflectors is equal.

2. The noise-reducing dry-type transformer according to claim 1, characterized in that, The root of any of the acoustic wave reflectors is fixedly connected to the noise reduction housing, and an angle α is formed between any of the acoustic wave reflectors and the noise reduction housing.

3. The noise-reducing dry-type transformer according to claim 2, characterized in that, Each of the sound insulation panels is provided with a plurality of rectangular holes, one side of the plurality of rectangular holes extends toward the noise reduction shell to form a plurality of first reflective plates, and an angle β is formed between each of the first reflective plates and the sound insulation panel; The relation α = β is satisfied.

4. The noise-reducing dry-type transformer according to claim 3, characterized in that, The acoustic wave reflector and the first reflector are misaligned.

5. The noise-reducing dry-type transformer according to claim 3, characterized in that, The surface of the acoustic wave reflector is provided with a plurality of first sound-absorbing grooves, and the surface of the first reflector is provided with a plurality of second sound-absorbing grooves.

6. The noise-reducing dry-type transformer according to claim 5, characterized in that, Sound-absorbing cotton is provided in any of the sound-absorbing grooves, and sound-absorbing cotton is provided in any of the second sound-absorbing grooves.

7. The noise-reducing dry-type transformer according to claim 1, characterized in that, A cooling fan is installed at the bottom of the silencing cavity, and sound-absorbing cotton is installed at both the output and input ends of the cooling fan.

8. The noise-reducing dry-type transformer according to claim 1, characterized in that, The noise-reducing dry-type transformer also includes a fixing mechanism; the transformer body is connected to the bottom of the noise-reducing shell based on the chassis.

9. The noise-reducing dry-type transformer according to claim 1, characterized in that, The transformer body includes a magnetic core and a winding coil, wherein the winding coil is wound around the magnetic core.

10. The noise-reducing dry-type transformer according to claim 9, characterized in that, The winding coil includes: multiple sets of low-voltage coils and multiple sets of high-voltage coils, with the high-voltage coils surrounding the outside of the low-voltage coils; The low-voltage coil is either a cast structure or a bound structure.

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