Structure for suppressing and absorbing noise of transformer or reactor

Abstract

The utility model relates to a structure for restraining and absorbing noise of a transformer or a reactor, which belongs to the technical field of power transmission and distribution and comprises a sound absorption structure mounted on the outer wall of an oil tank, the sound absorption structure comprises a sound absorption rock wool layer, an additional weight layer and a sound absorption outer layer, and the additional weight layer is attached to the outer wall of the oil tank. The sound-absorbing rock wool layer is attached to the outside of the additional weight layer, and the sound-absorbing outer layer is fixed to the outer wall of the oil tank and wraps the sound-absorbing rock wool layer and the additional weight layer. According to the utility model, the noise energy of the transformer and the electric reactor is attenuated by analyzing the noise generation, transmission and attenuation processes and adopting a method of changing the inherent frequency of a product, avoiding noise amplification caused by resonance and simultaneously inhibiting and absorbing the noise, so that the influence of the noise of the product on daily life and work of people is reduced, and a good effect is achieved through analysis and verification.

Description

Technical Field

[0001] The utility model relates to a structure for suppressing and absorbing transformer or reactor noise, which is applied to reactors, transformers and other products in the field of power transmission and distribution. The products to which the utility model belongs include coil products such as reactors and transformers. Background Art

[0002] With the acceleration of urbanization, more and more transformers, reactors, and other coil products in the power industry are being built near residential and commercial areas, leading to increasing demands for low-noise and environmentally friendly reactors and transformers. Conventional methods for reducing reactor and transformer noise typically involve reducing magnetic flux density, but this results in increased silicon steel laminations and copper conductors used in transformer and reactor cores, as well as increased product footprint and cost, reducing product cost competitiveness. Utility Model Content

[0003] In response to the deficiencies in the prior art, the utility model provides a structure for suppressing and absorbing transformer or reactor noise, which has the main characteristics of suppressing and absorbing reactor and transformer noise: it adopts the principles of physics and combines the characteristics of low-frequency noise caused by electromagnetic vibration of reactors and transformers. The implementation method is simple and the cost is low. It has a great promoting effect on meeting the market demand for low-noise and environmentally friendly reactors and transformers in recent years and improving product competitiveness.

[0004] The utility model is achieved through the following technical solutions:

[0005] The utility model provides a structure for suppressing and absorbing noise from a transformer or a reactor, comprising a sound-absorbing structure installed on the outer wall of an oil tank, wherein the sound-absorbing structure comprises a sound-absorbing rock wool layer, an additional weight layer and a sound-absorbing outer layer, wherein the additional weight layer is adhered to the outer wall of the oil tank, the sound-absorbing rock wool layer is adhered to the outside of the additional weight layer, and the sound-absorbing outer layer is fixed to the outer wall of the oil tank and wraps the sound-absorbing rock wool layer and the additional weight layer.

[0006] In order to further ensure the noise reduction effect, the utility model designs the sound-absorbing structure into multiple modules, wherein the sound-absorbing rock wool layer includes a first sound-absorbing rock wool layer and a second sound-absorbing rock wool layer. The first sound-absorbing rock wool layer is arranged in the middle of the outer wall of the fuel tank, and the second sound-absorbing rock wool layer is a group, respectively arranged at the top and bottom ends of the outer wall of the fuel tank.

[0007] Corresponding to the sound-absorbing rock wool layer, the additional weight layer includes a first additional weight layer and a second additional weight layer. The first sound-absorbing rock wool layer is attached to the outer wall of the first additional weight layer, and the second sound-absorbing rock wool layer is attached to the outer wall of the second additional weight layer.

[0008] Preferably, the thickness of the second additional weight layer is greater than the thickness of the first additional weight layer.

[0009] Corresponding to the sound-absorbing rock wool layer, the sound-absorbing outer layer includes a first sound-absorbing outer layer and a second sound-absorbing outer layer. The first sound-absorbing outer layer is attached to the outside of the first sound-absorbing rock wool layer, and the second sound-absorbing outer layer is wrapped around the second additional weight layer and the second sound-absorbing rock wool layer. The second sound-absorbing outer layer can seal the top and bottom ends of the first sound-absorbing outer layer, the first sound-absorbing rock wool layer, and the first additional weight layer.

[0010] Wherein, the sound-absorbing rock wool layer is preferably made of 15-30 mm sound-absorbing rock wool.

[0011] Wherein, the sound-absorbing outer layer is preferably made of 3-6 mm steel plate.

[0012] The physical principle adopted by the utility model is: the basic physical principle that the natural frequency of the product is inversely proportional to the weight and directly proportional to the stiffness of the product; the natural frequency is adjusted by adding reinforcing iron to external parts such as the transformer, reactor oil tank, and base to increase the stiffness of the product, and the natural frequency is adjusted by adding accessory weights, etc., to control the natural frequency of the reactor and transformer to keep it away from the resonant frequency band: 50HZ, 100HZ, 200HZ, 300HZ, 400HZ and other integer multiples of 50HZ, so as to avoid noise amplification caused by resonance; at the same time, in the noise transmission path, damping materials such as sound-absorbing rock wool are used to enhance noise attenuation, thereby achieving the purpose of reducing noise, and the structure is simple and the cost is low.

[0013] The beneficial effects of the present invention are as follows: through analysis of the noise generation, transmission and attenuation processes, the present invention adopts a method of changing the natural frequency of the product to avoid noise amplification caused by resonance, while suppressing and absorbing noise, thereby attenuating the noise energy of the transformer and reactor, thereby reducing the impact of product noise on people's daily life and work. After analysis and verification, the present invention has a good effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure for suppressing and absorbing transformer or reactor noise according to the present invention. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0016] like Figure 1 A structure for suppressing and absorbing transformer or reactor noise is shown, comprising a sound absorbing structure mounted on the outer wall of an oil tank 1;

[0017] Among them, the outer wall of the fuel tank 1 is welded by 6-12mm steel plates;

[0018] Wherein, the sound absorbing structure comprises a sound absorbing rock wool layer, an additional weight layer and a sound absorbing outer layer;

[0019] Specifically, the additional weight layer includes a first additional weight layer 7 and a second additional weight layer 6. The first additional weight layer 7 is attached to the middle portion of the outer wall of the fuel tank 1. The second additional weight layer 6 is attached to the top and bottom ends of the outer wall of the fuel tank 1 in a group. The thickness of the second additional weight layer 6 is greater than that of the first additional weight layer 7. The first additional weight layer 7 and the second additional weight layer 6 are made of metal or non-metallic materials with a certain density for increasing weight, such as aluminum plates or stainless steel plates.

[0020] Specifically, the sound-absorbing rock wool layer includes a first sound-absorbing rock wool layer 4 and a second sound-absorbing rock wool layer 5. The first sound-absorbing rock wool layer 4 is attached to the outside of the first additional weight layer 7 and completely covers the first additional weight layer 7. The second sound-absorbing rock wool layer 5 is a group, which is attached to the outside of the second additional weight layer 6 and completely covers the second additional weight layer 6. The first sound-absorbing rock wool layer 4 and the second sound-absorbing rock wool layer 5 are made of 15-30 mm sound-absorbing rock wool, for example, artificial inorganic fireproof and sound-absorbing fibers made of basalt, dolomite, etc. as the main raw materials;

[0021] Specifically, the sound-absorbing outer layer includes a first sound-absorbing outer layer 3 and a second sound-absorbing outer layer 2. The first sound-absorbing outer layer 3 is attached to the outside of the first sound-absorbing rock wool layer 4, and the second sound-absorbing outer layer 2 is wrapped around the second additional weight layer 6 and the second sound-absorbing rock wool layer 5. The second sound-absorbing outer layer 2 can seal the top and bottom ends of the first sound-absorbing outer layer 3, the first sound-absorbing rock wool layer 4, and the first additional weight layer 7, so that the sound-absorbing rock wool layer and the additional weight layer are all wrapped inside. The second sound-absorbing outer layer 2 adopts 3-6mm reinforced iron and is welded to the wall of the oil tank 1. The first sound-absorbing outer layer 3 adopts 3-6mm steel plate and is welded between the two second sound-absorbing outer layers 2.

[0022] The coil products such as reactors and transformers described in the present invention refer to: the product body is mainly composed of an iron core, a coil and a supporting member; the iron core is made of graded stacked silicon steel sheets; the coil is wound with electromagnetic wire; the iron core and coil are fixed together by supporting members such as clamps and pads; that is, coil products composed of a coil, an iron core, a supporting member, etc., which adopt the noise reduction structure described in the present invention, are all within the scope of protection of the present invention;

[0023] The transformer, reactor and other coil products described in the utility model have a plurality of reinforcing irons provided on the tank wall, and additional weights are fixed inside the reinforcing irons, which are then wrapped with an attracting material such as rock wool, and the outside is sealed with a steel plate;

[0024] The coil products such as transformers and reactors described in this utility model have additional heavy objects fixed in the cavities of external components such as pads and are sealed with sound-absorbing materials such as rock wool to reduce the natural frequency of the product and suppress noise attenuation, which are also within the scope of protection.

[0025] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A structure for suppressing and absorbing transformer or reactor noise, characterized by: It includes a sound-absorbing structure installed on the outer wall of the fuel tank, the sound-absorbing structure includes a sound-absorbing rock wool layer, an additional weight layer and a sound-absorbing outer layer, the additional weight layer is adhered to the outer wall of the fuel tank, the sound-absorbing rock wool layer is adhered to the outside of the additional weight layer, and the sound-absorbing outer layer is fixed to the outer wall of the fuel tank and wraps the sound-absorbing rock wool layer and the additional weight layer.

2. The structure for suppressing and absorbing transformer or reactor noise according to claim 1, characterized in that: The sound-absorbing rock wool layer includes a first sound-absorbing rock wool layer and a second sound-absorbing rock wool layer. The first sound-absorbing rock wool layer is arranged in the middle of the outer wall of the oil tank, and the second sound-absorbing rock wool layer is a group, which is respectively arranged at the top and bottom ends of the outer wall of the oil tank.

3. The structure for suppressing and absorbing transformer or reactor noise according to claim 2, characterized in that: The additional weight layer includes a first additional weight layer and a second additional weight layer. The first sound-absorbing rock wool layer is attached to the outer wall of the first additional weight layer, and the second sound-absorbing rock wool layer is attached to the outer wall of the second additional weight layer.

4. The structure for suppressing and absorbing transformer or reactor noise according to claim 3, characterized in that: The thickness of the second additional weight layer is greater than the thickness of the first additional weight layer.

5. The structure for suppressing and absorbing transformer or reactor noise according to claim 3, characterized in that: The sound-absorbing outer layer includes a first sound-absorbing outer layer and a second sound-absorbing outer layer. The first sound-absorbing outer layer is attached to the outside of the first sound-absorbing rock wool layer, and the second sound-absorbing outer layer is wrapped around the second additional weight layer and the second sound-absorbing rock wool layer. The second sound-absorbing outer layer can seal the top and bottom ends of the first sound-absorbing outer layer, the first sound-absorbing rock wool layer, and the first additional weight layer.

6. The structure for suppressing and absorbing transformer or reactor noise according to any one of claims 1 to 5, characterized in that: The sound-absorbing outer layer is made of 3-6 mm steel plate.

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