Sound insulation module on sound insulation apparatus of large noise equipment
A sound insulation device and equipment technology, applied in the direction of sound-generating equipment, instruments, etc., to achieve obvious sound insulation effect, simple structure, and improve the effect of sound absorption coefficient
Inactive Publication Date: 2009-04-08
JIANGSU ZHONGNENG POWER EQUIP
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Abstract
The invention provides a sound insulation module on the sound insulation device of large-noise equipment, which is widely applied to the noise disposal of large-noise equipment in the industries such as power, petrochemicals, metallurgy and the like. The module, from external layer to internal layer, sequentially comprises a sound insulation plate, a damping vibration layer and a sound-absorbing wool plate; from internal layer to external layer, the module sequentially comprises a porous sound-absorbing steel plate and a sound-absorbing wool plate; the circumference of the module is provided with reinforcing plates vertical to the porous sound-absorbing steel plate and the sound insulation plate; the sound insulation module is characterized in that a layer of sound insulation wool felt and a rectangular sound refluxing chamber are arranged between two sound-absorbing wool plates uniformly and intermittently. The sound insulation module prolongs the staying time of the sound in the sound refluxing chamber, enlarges the contact area between the noise and the wool plate and the wool felt, converts more sound energy into the heat energy inside the wool plate and the wool felt and improves the sound-absorbing coefficient of the material; the sound insulation quantity reaches more than 40dB, which is higher than the similar product by 15-35%.
Application Domain
Sound producing devices
Technology Topic
Steel platesWool +9
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