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Sandstone acoustic board used in transformer substation

A technology of sound-absorbing panels and substations, which is applied in the field of sound-absorbing panels, and can solve problems such as not being able to meet the noise reduction requirements of substation sites

Inactive Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

Traditional sound-absorbing materials cannot meet the noise reduction requirements of substation sites

Method used

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  • Sandstone acoustic board used in transformer substation

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Embodiment Construction

[0019] As shown in the accompanying drawings, an embodiment of a sandstone sound-absorbing panel for a substation of the present invention is formed by mixing and bonding natural clean sand 1 and an inorganic silicon-based solvent 2 that acts as a bond. As if welded together, there are irregular and interconnected tiny pores 3 in the whole composed of natural clean sand and inorganic silicon-based solvent. Because of the existence of tiny pores, when the noise passes through, the noise energy is converted into heat energy, thereby reducing noise.

[0020] The implementation of the sandstone sound-absorbing board used in substations of the present invention is made in the following way:

[0021] 1. Select natural clean sand with a fineness modulus of 1.5-2, and screen the impurities (soil, waste residue, etc.) in the natural sand;

[0022] 2. Select the inorganic silicon-based solvent and foaming agent, and the foaming agent should not chemically react with the inorganic silic...

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Abstract

The invention relates to a sandstone acoustic board used in a transformer substation. The main body of the sandstone acoustic board comprises natural clean sand and a mixed layer, wherein the natural clean is wrapped with the mixed layer; the mixed layer comprises an inorganic silicon based solvent and a foaming agent and plays a bonding role; and irregular micro pores communicated with one another are formed in the main body. A manufacturing method of the sandstone acoustic board comprises the following steps: 1, selecting the natural clean sand, and screening out impurities from the natural clean sand; 2, selecting the inorganic silicon based solvent and the foaming agent; 3, mixing the inorganic silicon based solvent, the foaming agent and the natural sand; 4, pouring the mixture of the inorganic silicon based solvent, the foaming agent and the natural sand into a mould, performing shaking to flatten the mixture in the mould to form the board; 5, curing the board with spray water at 15-35DEG C for not less than 7 days; and 6, demoulding when the sandstone board is strong enough so that the sandstone board loses no edge and corner during moving. According to the sandstone acoustic board and the manufacturing method thereof, since traditional fiber extrusion solidification is changed into natural sand gravel aggregation arrangement, the acoustic absorption coefficient of the sandstone acoustic board is high at a low frequency below 500Hz, and the sandstone acoustic board is especially suitable to use in the transformer substation.

Description

technical field [0001] The invention relates to the sound-absorbing panel technology in the fields of noise control in the industrial field and environmental protection, in particular to a sandstone sound-absorbing panel for substations. Background technique [0002] With the improvement of people's living standards, people's demand for electricity is increasing. A large number of urban substations are built near residential areas. The noise of substations inevitably affects people's life and work. In order to reduce noise pollution to the environment, more and more transformers are arranged indoors. However, the traditional sound-absorbing panels are made of inorganic fiber materials, and the overflow of sound-absorbing materials may also cause a "corona" phenomenon caused by tip discharge. Traditional sound-absorbing materials cannot meet the noise reduction requirements of substation sites. Contents of the invention [0003] The purpose of the present invention is to ...

Claims

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Application Information

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IPC IPC(8): C04B38/02
Inventor 李永桂齐建召张国华孙轶良王涛康伟申永鹏邵华
Owner STATE GRID CORP OF CHINA
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