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A preparation method of lightweight composite phononic crystal thin plate for substation noise reduction

A phononic crystal, lightweight technology, applied in the field of lightweight composite phononic crystal sheet preparation, can solve engineering application and development limitations and troubles, does not reflect the problems of high quality and sound insulation efficiency, achieves obvious sound insulation effect, Effects of mass reduction, large noise reduction performance

Active Publication Date: 2022-04-05
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0006] However, because the conventional local resonance phononic crystal is based on the energy band theory and the local resonance theory, the size of the scatterer increases accordingly when the band gap frequency decreases, so that the conventional phononic crystal sound insulation board is used in the control of substations, etc. Low-frequency noise does not reflect the advantages of lighter weight and higher sound insulation efficiency, which brings many restrictions and troubles to its engineering application and development

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  • A preparation method of lightweight composite phononic crystal thin plate for substation noise reduction
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  • A preparation method of lightweight composite phononic crystal thin plate for substation noise reduction

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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as Figure 1-4 As shown, the present invention discloses a lightweight composite phononic crystal thin plate for substation noise reduction, including: step 1, measuring the sound pressure level of tra...

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Abstract

The invention discloses a method for preparing a lightweight composite phonon crystal sheet for substation noise reduction. According to the noise spectrum characteristics of the substation and the lightweight design method based on the concept of "local resonance performance release", a lightweight composite phonon crystal is designed. daughter crystal sheet. This plate not only matches the spectral characteristics of substation noise in the band gap, but also greatly reduces the weight and size compared with other local resonance phononic crystals. It provides a high-quality noise-reducing metamaterial for the noise control of substations in the future. Compared with the existing noise-reducing materials, the thickness and quality are significantly reduced, so that the low-frequency noise of substations can be solved by a lightweight composite phononic crystal sheet .

Description

technical field [0001] The invention relates to the field of phonon crystal design methods, in particular to a method for preparing a lightweight composite phonon crystal thin plate used for noise reduction in substations. Background technique [0002] With the development of society, the social electricity consumption increases year by year, and the construction of corresponding substations increases accordingly. The resulting noise pollution has had a great impact on the residents near the substation, and at the same time, it will also have a certain impact on the construction of the power grid. [0003] Due to the low-frequency and stable peak characteristics of the substation noise spectrum, conventional materials are either particularly bulky or unable to effectively reduce noise when controlling the noise. For example, the existing technical means for noise reduction in substations basically adopt the BOX-IN method, and its substrate is filled with very thick steel pl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F111/10G06F113/24G06F119/10
Inventor 陈传敏郭兆枫刘松涛乔钏熙
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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