Sound insulation module on sound insulation apparatus of large noise equipment

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%.

Description

technical field [0001] The invention is a sound insulation module on the sound insulation device of loud noise equipment, which is widely used in the noise control of loud noise equipment in industries such as electric power, petrochemical industry and metallurgy. Background technique [0002] Generally speaking, a sound level of 30 to 40 decibels is a relatively quiet environment. If it exceeds 50 decibels, it will affect sleep and rest. If it exceeds 70 decibels, it will interfere with people's conversations, make people upset and lose concentration. Working and living in a noise environment above 90 decibels for a long time will seriously affect hearing or cause other diseases. In addition, noise will also have a serious impact on production and bring disasters to buildings. Strong noise can cause high-precision instruments to fail. Old buildings collapsed, and steel structures were damaged due to "acoustic fatigue". [0003] This shows the importance of noise control. ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a large sound insulation device that can be assembled into a sound insulation device, can significantly reduce the noise pollution of loud noise equipment, reduce the overall noise level to below 85 decibels, and can meet the noise or noise control requirements. A sound insulation module on the sound insulation device of noise equipment

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