Sound absorption and isolation composite element and transformer

A composite, sound-absorbing and insulating technology, applied in transformer/inductor noise damping, sound-generating equipment, instruments, etc., can solve problems such as mismatching noise characteristics

Pending Publication Date: 2019-12-20
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +5
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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 compound in the prior art does not match the noise characteristics of the transformer, thereby providing a sound-absorbing and insulating compound

Method used

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  • Sound absorption and isolation composite element and transformer
  • Sound absorption and isolation composite element and transformer
  • Sound absorption and isolation composite element and transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present invention provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite 6 is shown, and the sound-absorbing and insulating composite 6 is arranged outside the transformer main body. 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 composite part 6 is fixed on the angle iron. Wherein the sound-absorbing and insulating compound 6 includes such as figure 2 As shown in the sound insulation 1 and the impedance composite sound-absorbing assembly, the impedance composite sound-absorbing assembly is arranged near the outside of the transformer main body. Specifically, the sound insulation piece 1 and the impedance compound sound absorption component can be connected by using square steel.

[0034] Wherein it can be set that: the sound insulation member 1 is a metal sound insulation board such as a steel plate ...

Embodiment 2

[0042] This embodiment provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite 6 shown is arranged on the outside of the transformer main body, wherein the structure of the sound-absorbing and insulating composite 6 is the same as that of the sound-absorbing and insulating composite 6 provided in Embodiment 1, However, the material and size of the sound-absorbing and insulating composite 6 are different from those of the sound-absorbing and insulating composite 6 in Embodiment 1.

[0043] In this embodiment, the sound insulation member 1 is a steel plate with a thickness of 1 mm; the micro-perforated plate 5 is a steel micro-perforated plate 5 with a thickness of 0.8 mm, a hole diameter of 1 mm, and a hole spacing of 5 mm; the fiber material layer is Polyester fiber layer, the surface density of polyester fiber layer is 2000g / m 2 And the thickness is 5 cm; the thickness of the first cavity 2 is 10 cm, and the...

Embodiment 3

[0045] This embodiment provides a transformer, which includes a transformer body and such as figure 1 The sound-absorbing and insulating composite 6 shown is arranged on the outside of the transformer main body, wherein the structure of the sound-absorbing and insulating composite 6 is the same as that of the sound-absorbing and insulating composite 6 provided in Embodiment 1, However, the material and size of the sound-absorbing and insulating composite 6 are different from those of the sound-absorbing and insulating composite 6 in Embodiment 1.

[0046] In this embodiment, the sound insulation member 1 is an aluminum plate with a thickness of 1 mm; the micro-perforated plate 5 is an aluminum micro-perforated plate 5 with a thickness of 0.5 mm, a hole diameter of 1 mm, and a hole spacing of 15 mm; the fiber material layer is Polyester fiber layer, surface density of glass wool layer is 500g / m 2 And the thickness is 5 cm; the thickness of the first cavity 2 is 5 cm, and the t...

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Abstract

The invention discloses a sound absorption and isolation composite element and a transformer, wherein the sound absorption and isolation composite element comprises a sound isolation element and an impedance composite sound absorption assembly, wherein the impedance composite sound absorption assembly is stacked on the sound isolation element, and comprises a porous sound absorption unit and a resonance sound absorption unit which are sequentially stacked; the porous sound absorption unit comprises a porous sound absorption layer and a first cavity; and the resonance sound absorption unit comprises a micro perforation plate and a second cavity. Through the arrangement of the porous sound absorption unit and the resonance sound absorption unit, the resonance sound absorption unit achieves the effect of regulating the sound absorption quantity of a low-frequency band of the porous sound absorption unit; the sound absorption coefficient of the low-frequency band can be effectively improved, and the absorption frequency band width is expanded, so that the noise features given out by the transformer are matched; along with the increase of the thickness of the first cavity, wave crests of a sound absorption coefficient curve gradually move towards the low-frequency band, so that the low-frequency sound absorption is facilitated; and along with the increase of the thickness of the second cavity, wave crests of the sound absorption coefficient curve gradually move towards the low-frequency band, so that the low-frequency sound absorption is facilitated.

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] There are a large number of distribution transformers, which are relatively close to residential areas. The noise is mainly low-frequency, with large wavelengths, slow attenuation, and strong penetration ability, which has a great impact on surrounding residents. In order to effectively reduce the impact of distribution transformer noise on the surrounding environment, it is one of the feasible methods to install sound-absorbing and insulating composite parts outside the oil tank. [0003] The sound-absorbing and insulating composite part is made by cutting the sound-insulating material into a certain specification according to the required size, and adding a certain thickness of sound-absorbing material inside it. In field application, the sound-abso...

Claims

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Application Information

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IPC IPC(8): G10K11/16G10K11/168G10K11/172H01F27/33
CPCG10K11/16G10K11/168G10K11/172H01F27/33
Inventor 樊超聂京凯陈新韩钰肖伟民李士林魏明磊杜鹏宇李振海宋国升陈秋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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