Transformer oil tank vibration and noise reduction device

Abstract

The present invention discloses a vibration and noise reduction device inside a transformer oil tank. An upper mounting plate and a lower mounting plate are fixedly connected along the circumference of the inner wall of the oil tank. An elastic membrane is fixedly connected in the gap between the upper mounting plate and the lower mounting plate. A plurality of sponge columns are fixedly connected to the outer side of the elastic membrane. Springs are movably connected to the outer walls of the sponge columns. Sound-absorbing cotton is fixedly connected to the outer side of the sponge columns. A first sound-absorbing pipe is fixedly connected to the outer side of the sound-absorbing cotton. A first partition plate and a second partition plate are sequentially arranged on the outer side of the sound-absorbing cotton. A second sound-absorbing pipe is inserted into the interior of the second partition plate. Sound-absorbing holes are formed in the pipe walls of the first sound-absorbing pipe and the second sound-absorbing pipe. Sound-absorbing balls are arranged on the circumferential outer side of the first sound-absorbing pipe. A decoupling plate for sound absorption and noise reduction is arranged on the outer side of the second sound-absorbing pipe. The present invention can effectively eliminate vibration and noise inside the transformer oil tank.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution and transformation equipment, and particularly relates to an oil-immersed transformer. Background Art

[0002] An oil-immersed transformer is a device that uses the principle of electromagnetic induction to change the AC voltage, and has functions such as voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization. It is widely used in production and life. In order to strengthen the insulation and cooling conditions, the iron core and winding of the oil-immersed transformer are immersed together in a fuel tank filled with transformer oil. However, it is found in actual use that the fuel tank of the transformer will generate vibrations of different intensities following the operation of the transformer. These vibrations not only affect the normal operation of the transformer, but also generate a large amount of noise, which is unacceptable in many applications. Therefore, how to effectively eliminate the vibrations and noise inside the transformer fuel tank has become an urgent technical problem to be solved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vibration and noise reduction device inside a transformer fuel tank, which solves the problem that vibrations and noises often occur inside the transformer fuel tank.

[0004] To solve the above technical problem, the present invention adopts the following technical solution: A vibration and noise reduction device inside a transformer fuel tank includes a fuel tank. An upper mounting plate and a lower mounting plate are fixedly connected to the inner wall of the fuel tank along the circumference. An elastic membrane is fixedly connected in the gap between the upper mounting plate and the lower mounting plate. The pore diameter of the elastic membrane is smaller than the molecular diameter of the oil. A plurality of sponge columns are fixedly connected to the outer side of the elastic membrane. Springs are movably connected to the outer walls of the sponge columns. Sound-absorbing cotton is fixedly connected to the outer sides of the sponge columns. A first sound-absorbing pipe is fixedly connected to the outer side of the sound-absorbing cotton. A first partition plate and a second partition plate are sequentially arranged on the outer side of the sound-absorbing cotton. A second sound-absorbing pipe is inserted into the second partition plate. Sound-absorbing holes are formed in the pipe walls of the first sound-absorbing pipe and the second sound-absorbing pipe. There are gaps between the sound-absorbing cotton and the first partition plate, and between the first partition plate and the second partition plate. The first sound-absorbing pipe extends into the gap between the first partition plate and the second partition plate. The inner end of the second sound-absorbing pipe extends into the gap between the first partition plate and the second partition plate and is staggered from the first sound-absorbing pipe. The outer end of the second sound-absorbing pipe extends out of the second partition plate. Sound-absorbing balls are arranged on the circumferential outer side of the first sound-absorbing pipe. A decoupling plate for sound absorption and noise reduction is arranged on the outer side of the second sound-absorbing pipe.

[0005] Preferably, a base is fixedly connected to the bottom of the fuel tank. Support legs are fixedly connected to the bottom of the base. Feet made of composite rubber are fixedly connected to the bottoms of the support legs.

[0006] Preferably, a corrugated plate is fixedly connected to the outer wall of the fuel tank, and a top cover is fixedly connected to the top of the fuel tank.

[0007] Preferably, the sound-absorbing ball is made of foam plastic.

[0008] Preferably, decoupling holes are provided on the surface and inside of the decoupling plate.

[0009] Preferably, both the first partition and the second partition are made of sound-insulating materials.

[0010] The technical solution adopted by the present invention has the following beneficial effects:

[0011] 1. The vibration inside the fuel tank is elastically buffered by the spring. When the fuel tank vibrates internally, the sponge column and the spring are compressed to offset the impact force of the oil. The noise inside the fuel tank can be absorbed and eliminated through the first sound-absorbing pipe and the second sound-absorbing pipe, causing the noise to refract repeatedly to achieve the noise reduction effect. Through the coordinated use of the spring, fuel tank, sponge column, first sound-absorbing pipe, and second sound-absorbing pipe, the effect of effectively eliminating the vibration and noise inside the transformer fuel tank is achieved.

[0012] 2. The noise inside the fuel tank is absorbed by the sound-absorbing cotton. The absorbed noise is transmitted to the outside of the sound-absorbing cotton. Part of it is absorbed by the sound-absorbing ball, and the other part enters the first sound-absorbing pipe through the sound-absorbing holes and is conveyed to the outside, then discharged from the sound-absorbing holes on the outside of the first sound-absorbing pipe, enters the second sound-absorbing pipe, and finally is discharged from the sound-absorbing holes on the outside of the second sound-absorbing pipe and is absorbed and noise-reduced by the decoupling plate. Through the coordinated use of the sound-absorbing cotton, fuel tank, sound-absorbing ball, sound-absorbing holes, first sound-absorbing pipe, second sound-absorbing pipe, and decoupling plate, the effect of effectively eliminating the noise generated by the transformer fuel tank is achieved.

[0013] The specific technical solution and its beneficial effects of the present invention will be described in detail in the following specific embodiments in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the drawings and specific embodiments:

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is an enlarged schematic diagram of the upper mounting plate part of the present invention;

[0017] Figure 3 is for the present invention Figure 2 is an enlarged schematic diagram of part A in the present invention.

[0018] In the figure: 1 - fuel tank, 2 - corrugated plate, 3 - top cover, 4 - base, 5 - support leg, 6 - upper mounting plate, 7 - lower mounting plate, 8 - elastic membrane, 9 - sponge column, 10 - spring, 11 - sound-absorbing cotton, 12 - first silencing pipe, 13 - sound-absorbing hole, 14 - sound-absorbing ball, 15 - first partition plate, 16 - second partition plate, 17 - second silencing pipe, 18 - decoupling plate. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Those skilled in the art can understand that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0021] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms "upper", "lower", "inner", "outer", etc. indicating orientation or positional relationship are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0022] Refer to Figures 1 to 3 As shown, for the vibration and noise reduction device inside the transformer fuel tank, this oil-immersed transformer includes a fuel tank 1. A corrugated plate 2 is fixedly connected to the outer wall of the fuel tank 1. A top cover 3 is fixedly connected to the top of the fuel tank 1. A base 4 is fixedly connected to the bottom of the fuel tank 1. A support leg 5 is fixedly connected to the bottom of the base 4. The bottom of the support leg 5 is fixedly connected with a foot pad made of composite rubber. The composite rubber material has advantages such as wear resistance and anti-slip, can stably fix the base 4 on the ground, and reduce the noise generated by vibration. At the same time, the corrugated plate 2 also has a sound insulation and noise reduction effect, which is a conventional noise reduction structure in the prior art.

[0023] Based on the existing conventional noise reduction structure, in order to solve the problem of frequent vibration and noise generated inside the transformer oil tank, the following technical solutions are further adopted. An upper mounting plate 6 and a lower mounting plate 7 are fixedly connected to the inner wall of the oil tank along the circumferential direction. An elastic membrane 8 (fiber elastic membrane) is fixedly connected in the gap between the upper mounting plate 6 and the lower mounting plate 7. The pore diameter of the elastic membrane is smaller than the molecular diameter of the oil, allowing sound to pass through but not allowing oil to pass through. A number of sponge columns 9 are fixedly connected to the outer side of the elastic membrane 8. A spring 10 is movably connected to the outer wall of the sponge column 9. A sound-absorbing cotton 11 is fixedly connected to the outer side of the sponge column 9.

[0024] Furthermore, a first sound-absorbing pipe 12 is fixedly connected to the outer side of the sound-absorbing cotton. A first partition plate 15 and a second partition plate 16 are sequentially arranged on the outer side of the sound-absorbing cotton 11. A second sound-absorbing pipe 17 is inserted into the second partition plate. Sound-absorbing holes 13 are opened in the pipe walls of the first sound-absorbing pipe 12 and the second sound-absorbing pipe 17, effectively reducing noise and preventing noise from affecting the normal operation of the transformer. There are gaps between the sound-absorbing cotton 11 and the first partition plate 15, and between the first partition plate 15 and the second partition plate 16. The first sound-absorbing pipe 12 extends into the gap between the first partition plate 15 and the second partition plate 16. The inner end of the second sound-absorbing pipe 17 extends into the gap between the first partition plate 15 and the second partition plate 16 and is staggered with the first sound-absorbing pipe 12. The outer end of the second sound-absorbing pipe 17 extends out of the second partition plate 16. A sound-absorbing ball 14 (the sound-absorbing ball is filled in the gap between the sound-absorbing cotton and the first partition plate and the gap between the first partition plate and the second partition plate) is arranged on the circumferential outer side of the first sound-absorbing pipe 12. A decoupling plate 18 for sound absorption and noise reduction is arranged above the outer end of the second sound-absorbing pipe 17. The first partition plate 15 and the second partition plate 16 are both made of sound-insulating materials, restricting noise within a certain area and better achieving sound absorption and noise reduction. The vibration inside the oil tank 1 is elastically buffered by the spring 10. When the oil tank 1 vibrates internally, the sponge column 9 and the spring 10 are compressed, offsetting the impact force of the oil. The noise inside the oil tank 1 is absorbed by the sound-absorbing cotton 11. The absorbed noise is transmitted to the outer side of the sound-absorbing cotton 11. Part of it is absorbed by the sound-absorbing ball 14, and the other part enters the first sound-absorbing pipe 12 through the sound-absorbing holes 13 and is conveyed outward, and then discharged from the sound-absorbing holes 13 on the outer side of the first sound-absorbing pipe 12, enters the second sound-absorbing pipe 17, and finally is discharged from the sound-absorbing holes 13 on the outer side of the second sound-absorbing pipe 17 and is absorbed and noise-reduced by the decoupling plate 18.

[0025] In order to improve the sound insulation and noise reduction effect, the sound-absorbing ball 14 is made of foam plastic. The foam plastic material has excellent sound absorption performance and can absorb and eliminate the noise inside the oil tank 1. The decoupling plate 18 is a porous plate, and small and bent holes are opened on its surface and inside. The fine holes can absorb sound waves, causing the sound waves to refract repeatedly in the fine holes to achieve the noise reduction effect.

[0026] In summary, for the vibration and noise reduction device inside the transformer oil tank, the vibration inside the oil tank 1 is elastically buffered by the spring 10. When the oil tank 1 vibrates internally, the sponge column 9 and the spring 10 are compressed to offset the impact force of the oil. The noise inside the oil tank 1 can be absorbed and eliminated through the first sound-absorbing pipe 12 and the second sound-absorbing pipe 17, causing the noise to refract repeatedly to achieve the noise reduction effect. Through the coordinated use of the spring 10, the oil tank 1, the sponge column 9, the first sound-absorbing pipe 12, and the second sound-absorbing pipe 17, the effect of effectively eliminating the vibration and noise inside the transformer oil tank 1 is achieved. The noise inside the oil tank 1 is absorbed by the sound-absorbing cotton 11. The absorbed noise is transmitted to the outside of the sound-absorbing cotton 11. Part of it is absorbed by the sound-absorbing balls 14, and the other part enters the first sound-absorbing pipe 12 through the sound-absorbing holes 13 and is transported outward. The noise transported outward is discharged from the sound-absorbing holes 13 on the outside of the first sound-absorbing pipe 12, enters the second sound-absorbing pipe 17, and finally is discharged from the sound-absorbing holes 13 on the outside of the second sound-absorbing pipe 17 and is absorbed and noise-reduced by the decoupling plate 18. Through the coordinated use of the sound-absorbing cotton 11, the oil tank 1, the sound-absorbing balls 14, the sound-absorbing holes 13, the first sound-absorbing pipe 12, the second sound-absorbing pipe 17, and the decoupling plate 18, the effect of effectively eliminating the vibration and noise inside the transformer oil tank 1 is achieved.

[0027] As described above, the above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the above specific embodiment. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A device for reducing vibration and noise inside a transformer oil tank, comprising an oil tank, characterized in that: The inner wall of the fuel tank is fixedly connected with an upper mounting plate and a lower mounting plate along the circumferential direction. An elastic membrane is fixedly connected in the gap between the upper mounting plate and the lower mounting plate. The pore diameter of the elastic membrane is smaller than the molecular diameter of the oil. A plurality of sponge columns are fixedly connected to the outer side of the elastic membrane. Springs are movably connected to the outer walls of the sponge columns. Sound-absorbing cotton is fixedly connected to the outer sides of the sponge columns. A first sound-absorbing pipe is fixedly connected to the outer side of the sound-absorbing cotton. A first partition plate and a second partition plate are sequentially arranged on the outer side of the sound-absorbing cotton. A second sound-absorbing pipe is inserted into the second partition plate. Sound-absorbing holes are formed in the pipe walls of the first sound-absorbing pipe and the second sound-absorbing pipe. There are gaps between the sound-absorbing cotton and the first partition plate and between the first partition plate and the second partition plate. The first sound-absorbing pipe extends into the gap between the first partition plate and the second partition plate. The inner end of the second sound-absorbing pipe extends into the gap between the first partition plate and the second partition plate and is staggered with the first sound-absorbing pipe. The outer end of the second sound-absorbing pipe extends out of the second partition plate. Sound-absorbing balls are arranged on the circumferential outer side of the first sound-absorbing pipe. A decoupling plate for sound absorption and noise reduction is arranged on the outer side of the second sound-absorbing pipe. The elastic membrane is a fiber elastic membrane. The sound-absorbing balls are filled in the gaps between the sound-absorbing cotton and the first partition plate and between the first partition plate and the second partition plate.

2. The vibration and noise reduction device inside the transformer oil tank according to claim 1, wherein: A base is fixedly connected to the bottom of the fuel tank. Support legs are fixedly connected to the bottom of the base. Foot pads made of composite rubber are fixedly connected to the bottoms of the support legs.

3. The vibration and noise reduction device inside the transformer oil tank according to claim 2, characterized in that: A corrugated plate is fixedly connected to the outer wall of the fuel tank. A top cover is fixedly connected to the top of the fuel tank.

4. The vibration and noise reduction device inside the transformer oil tank according to claim 1, wherein: The sound-absorbing balls are made of foam plastic.

5. The vibration and noise reduction device inside the transformer oil tank according to claim 1, wherein: Decoupling holes are formed on the surface and inside of the decoupling plate.

6. The vibration and noise reduction device in the transformer oil tank according to any one of claims 1 to 5, characterized in that: Both the first partition plate and the second partition plate are made of sound-insulating materials.

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