Silencer used for steel chimney of large boiler induced-draft fan
A large-scale boiler and induced draft fan technology, which is applied in the direction of sound-generating equipment, instruments, chemical instruments and methods, etc., can solve the problems of no noise reduction effect, no corrosion resistance, high cost, etc., and achieve good noise reduction effect, no maintenance cost, long life effect
Active Publication Date: 2018-06-29
高州创建铸造有限公司
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- Description
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- Application Information
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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 silencer used for a steel chimney of a large boiler induced-draft fan. The silencer is mounted in the steel chimney of the large boiler induced-draft fan, and comprises a red brick wall, a sound storage chamber and a sound absorbing layer, wherein the red brick wall surrounds the sound storage chamber, the sound storage chamber is of a honeycomb structure, the sound storage chamber surrounds the sound absorbing layer, the sound absorbing layer comprises an outer-layer perforated plate, an inner-layer perforated plate, sound absorbing cotton and a tinfoil sound wave reflecting film, the sound absorbing cotton is arranged between the outer-layer perforated plate and the inner-layer perforated plate, the tinfoil sound wave reflecting film is arranged between the sound absorbing cotton and the inner-layer perforated plate, through holes matched with holes of the inner-layer perforated plate are arranged in the tinfoil sound wave reflecting film, and the inner-layer perforated plate attaches to the sound storage chamber. The silencer provided by the invention is extremely low in construction cost, simple in structure, corrosion-resistant, long in service life,free of maintenance cost, good in silencing effect, and very suitable for steel chimneys of the large boilers.
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 flow 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, corros...
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