A muffler for steel chimney of induced draft fan of large boiler
A large-scale boiler and induced draft fan technology, applied in the direction of sound-generating equipment, instruments, chemical instruments and methods, etc., can solve the problems of no corrosion resistance, high cost, no noise reduction effect, etc., and achieve good noise reduction effect, long life, The effect of low construction cost
Active Publication Date: 2021-08-13
高州创建铸造有限公司
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AI Technical Summary
Problems solved by technology
[0003] In order to facilitate the installation of the chimney, most manufacturers use steel chimneys instead of the original red brick smoke exhaust pipes. Steel chimneys not only have no noise reduction effect, but can enhance and amplify the noise. The noise reduction equipment currently on the market is not only expensive, but also Does not have corrosion resistance properties
Method used
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Embodiment
[0019] Embodiment: A kind of muffler for the steel chimney of large-scale boiler induced draft fan, described muffler is installed in the steel chimney of large-scale boiler induced draft fan, described muffler comprises red brick wall 3, sound storage room 4 and sound-absorbing layer 5, so The chamber 1 surrounds the red brick wall 3, the sound insulation wall 3 surrounds the sound storage chamber 4, the sound storage chamber 4 has a honeycomb structure, and the sound storage chamber 4 surrounds the sound-absorbing layer 5 , the sound-absorbing layer 5 includes an outer porous plate 51, an inner porous plate 52, a sound-absorbing cotton 53 and a sound wave reflection film 54, and the sound-absorbing Cotton 53, between the sound-absorbing cotton 53 and the inner porous plate 52 is provided with the tin foil sound wave reflection film 54, and the tin foil sound wave reflection film 54 is provided with holes matching the holes of the inner layer porous plate 52 Through holes, th...
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Abstract
The invention relates to a muffler for a steel chimney of a large-scale boiler induced draft fan. The muffler is installed in the steel chimney of a large boiler induced draft fan. The muffler includes a red brick wall, a sound storage room and a sound-absorbing layer. The red brick The wall surrounds the sound storage chamber, the sound storage chamber is a honeycomb structure, the sound storage chamber surrounds the sound-absorbing layer, and the sound-absorbing layer includes an outer porous plate, an inner porous plate, sound-absorbing cotton and tin foil sound wave The reflective film, the sound-absorbing cotton is arranged between the outer porous plate and the inner porous plate, the tin foil acoustic reflection film is arranged between the sound-absorbing cotton and the inner porous plate, and the tin foil The sound wave reflective film is provided with through holes matching the holes of the inner porous plate, and the inner porous plate fits with the sound storage chamber. The muffler of the present invention has very low construction cost, simple structure, and durable Corrosion, long life, no maintenance cost, good noise reduction effect, very suitable for large boiler steel chimneys.
Description
technical field [0001] The invention relates to a muffler, in particular to a muffler used for a steel chimney of a large boiler induced draft fan. Background technique [0002] The air flow of the chimney of the induced draft fan of a large boiler is very large, generally 50,000 to 200,000 cubic meters per hour, and the air temperature is high, and the gas is highly corrosive. [0003] In order to facilitate the installation of the chimney, most manufacturers use steel chimneys instead of the original red brick smoke exhaust pipes. Steel chimneys not only have no noise reduction effect, but can enhance and amplify the noise. The noise reduction equipment currently on the market is not only expensive, but also Does not have corrosion resistance properties. Contents of the invention [0004] The object of the present invention is to disclose a muffler for large-scale boiler induced draft fan steel chimney, which has very low construction cost, simple structure, corrosion r...
Claims
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IPC IPC(8): G10K11/162G10K11/168F23J13/00B32B3/24B32B3/12B32B15/14B32B33/00
CPCB32B3/12B32B3/266B32B5/22B32B15/14B32B33/00B32B2307/10B32B2307/102F23J13/00G10K11/162G10K11/168
Inventor 朱瑞辉
Owner 高州创建铸造有限公司