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Sound absorption and insulation composite member and transformer

A composite part, sound absorption and isolation technology, applied in the direction of transformer/inductor noise damping, etc., can solve problems such as mismatching noise characteristics

Pending Publication Date: 2019-11-15
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the sound-absorbing and insulating composite part in the prior art does not match the noise characteristics emitted by the transformer, thereby providing a sound-absorbing and insulating composite part

Method used

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  • Sound absorption and insulation composite member and transformer
  • Sound absorption and insulation composite member and transformer
  • Sound absorption and insulation composite member and transformer

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The present invention provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite part 8 shown is fixedly connected to the outer side of the main body of the transformer. Specifically, an angle iron is welded on the outer side of the outer wall of the transformer main body, and the sound-absorbing and insulating compound 8 is fixed on the angle iron. The sound-absorbing and insulating composite part 8 includes a constrained damping sound-insulating component and an impedance composite sound-absorbing component, and the impedance composite sound-absorbing component is arranged near the outer side of the transformer main body. Specifically, the impedance composite sound-absorbing components can be connected by square steel, and the constrained damping sound-insulation components can be connected by bonding. Of course, the sound-absorbing and insulating composite part 8 can also be used to reduce noise of oth...

Embodiment 2

[0044] This embodiment provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite 8 shown is arranged on the outside of the transformer main body, wherein the structure of the sound-absorbing and insulating composite 8 is the same as that of the sound-absorbing and insulating composite 8 provided in Embodiment 1, However, the material and size of the sound-absorbing and insulating composite 8 are different from those of the sound-absorbing and insulating composite 8 in Embodiment 1.

[0045] In this embodiment, both the rigid base layer 3 and the rigid constrained layer 1 are steel plates with a thickness of 1 mm, and the elastic damping layer 2 is a butyl rubber plate with a thickness of 4 mm; the micro-perforated plate 7 has a thickness of 0.5 mm and a hole diameter of Aluminum micro-perforated plate of 1 mm with a hole spacing of 15 mm; the fiber material layer is a layer of polyester fiber cotton with an area...

Embodiment 3

[0047] This embodiment provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite 8 shown is arranged on the outside of the transformer main body, wherein the structure of the sound-absorbing and insulating composite 8 is the same as that of the sound-absorbing and insulating composite 8 provided in Embodiment 1, However, the material and size of the sound-absorbing and insulating composite 8 are different from those of the sound-absorbing and insulating composite 8 in Embodiment 1.

[0048] In this embodiment, both the rigid base layer 3 and the rigid constrained layer 1 are steel plates with a thickness of 1.5 mm, and the elastic damping layer 2 is a butyl rubber plate with a thickness of 5 mm; the micro-perforated plate 7 has a thickness of 1 mm and a hole diameter of 0.83 mm, steel micro-perforated plate with a hole spacing of 12.5 mm; the fiber material layer is a glass wool layer, and the surface density of...

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Abstract

The invention discloses a sound absorption and insulation composite member and a transformer. The sound absorption and insulation composite member includes a constrained damping sound insulation assembly and an impedance composite sound absorption assembly, wherein the constrained damping sound insulation assembly includes a rigid base layer, an elastic damping layer and a rigid constraining layerwhich are sequentially stacked, the impedance composite sound absorption assembly is stacked on the rigid base layer and includes a porous sound absorption unit and a resonance sound absorption unitwhich are sequentially stacked, and the resonance sound absorption unit includes a micro-perforated plate and a first cavity. The sound absorption and insulation composite member is advantaged in thatthe constrained damping sound insulation assembly is set, the elastic damping layer plays a role of adjusting the sound insulation amount of the rigid base layer in the low frequency band, and the rigid constraining layer plays a role of improving the noise reduction effect of the elastic damping layer; through setting the porous sound absorption unit and the resonance sound absorption unit, theresonance sound absorption unit is used for adjusting the sound absorption amount of the porous sound absorption unit in the low frequency band to match the noise characteristics of a transformer, through increase of thickness of a first chamber, the peak of a sound absorption coefficient curve gradually moves to the low frequency band, which is favorable for low frequency sound absorption.

Description

technical field [0001] The invention relates to the technical field of noise pollution prevention and control, in particular to a sound-absorbing and insulating composite part and a transformer. Background technique [0002] In recent years, with the acceleration of urbanization, land resources have become increasingly tight, and more and more substations have penetrated into the central area of ​​the city. The distance between substations and surrounding residents has been greatly reduced, which has a great impact on surrounding residents. The noise of the substation is mainly generated by the main transformer, with low frequency, large wavelength, slow attenuation, and strong penetration. In order to effectively reduce the impact of the noise of the main transformer on the surrounding environment, it is one of the feasible methods to install sound-absorbing and insulating composite parts outside the oil tank. one. [0003] The sound-absorbing and insulating composite part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/33
CPCH01F27/33
Inventor 樊超聂京凯韩钰陈新肖伟民李睿卢林汪美顺金文德田一王广克刘晓圣王斌孔晓峰何强侯东
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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