CN2516932Y - Noise reducer of cooling tower - Google Patents
Noise reducer of cooling tower Download PDFInfo
- Publication number
- CN2516932Y CN2516932Y CN 01274168 CN01274168U CN2516932Y CN 2516932 Y CN2516932 Y CN 2516932Y CN 01274168 CN01274168 CN 01274168 CN 01274168 U CN01274168 U CN 01274168U CN 2516932 Y CN2516932 Y CN 2516932Y
- Authority
- CN
- China
- Prior art keywords
- backboard
- perforated panel
- outer housing
- cooling tower
- micro perforated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to a noise elimination device for the cooling tower, comprising an outer housing and a noise elimination flake, wherein the reverse-cone shaped outer housing comprises a micro perforated panel and a backboard; the micro perforated panel is provided with holes, the diameter of which is 0.2 to 1.0 mm; the perforation rate of the micro perforated panel is 1% to 3%, and the thickness of the micro perforated panel is 0.5 to 1.0 mm; the thickness of the cavity which is between the micro perforated panel and the backboard is 80 to 150 mm; the ring-shaped noise elimination flake is positioned in the outer housing, and both the entry end and the exit end of the noise elimination flake are streamline shaped. The utility model has the advantages that as the reverse-cone shaped outer housing is adopted, the total area of the airflow passage expands gradually; as the entry end and the exit end of the noise elimination flake are streamline shaped, the vortex loss is reduced; as the outer housing comprising the micro perforated panel and the backboard is adopted, the noise can be effectively reduced.
Description
Technical field:
The utility model relates to a kind of silencer for gas flow, particularly a kind of silencing apparatus that is used for the air stream outlet of cooling tower.
Background technology:
Cooling tower of the prior art seldom is equipped with denoising device, in only a few the occasion of silencer is installed, and utilizes loose many micropores sound-absorbing material such as super glass wool, mineral wool to reduce noise.
Summary of the invention:
Technical problem to be solved in the utility model is: because cooling tower of the prior art seldom is equipped with denoising device, and the occasion of silencer is being installed, be to utilize loose many micropores sound-absorbing material such as super glass wool, mineral wool to reduce noise, but the cooling tower that turns round under the condition can often face Exposure to Sunlight, drench with rain and strong wind in the open, so loose material is easy to sink, deposit, make acoustic attenuation performance descend.The utility model is to solve the problems of the technologies described above the silencing apparatus that the technical scheme that is proposed provides a kind of cooling tower, the silencing apparatus of described this cooling tower comprises shell and anechoic sheet, wherein, described shell is inverted cone, described shell is made up of microperforated panel and backboard, described microperforated panel is provided with the hole, the diameter in described hole is between 0.2-1.0mm, the punching rate of described microperforated panel is between 1%-3%, the thickness of slab of described microperforated panel is between 0.5-1.0mm, it between described microperforated panel and the backboard cavity, described cavity depth is between 80mm-150mm, described anechoic sheet ringwise, described anechoic sheet is arranged in the described shell, the arrival end of described anechoic sheet and the port of export are streamlined, and the effective length of the muffler section that described shell and anechoic sheet are formed is between 700-1200mm.The utility model compared with the prior art, because adopted the shell of inversed-cone shape, the gas channel gross area is progressively expanded, again because the arrival end and the port of export of anechoic sheet are streamlined, can reduce eddy current loss, simultaneously, owing to adopted the shell that constitutes by microperforated panel and backboard, so can effectively reduce noise.When the effective length of muffler section is between 800-900mm, can reach the noise reduction of 8dB.
Description of drawings: Fig. 1 is the structural representation of the silencing apparatus of a kind of cooling tower of the utility model.
The specific embodiment: as shown in Figure 1, the silencing apparatus of a kind of cooling tower of the utility model, comprise shell 4 and anechoic sheet 3, wherein, described shell 4 is inverted cone, described shell 4 is made up of microperforated panel 1 and backboard 2, described microperforated panel 1 is provided with the hole, the diameter in described hole is between 0.2-1.0mm, the punching rate of described microperforated panel 1 is between 1%-3%, the thickness of slab of described microperforated panel 1 is a cavity between described microperforated panel 1 and the backboard 2 between 0.5-1.0mm, and described cavity depth is between 80mm-150mm, described anechoic sheet 3 ringwise, described anechoic sheet 3 is arranged in the described shell 4, and the arrival end of described anechoic sheet 3 and the port of export are streamlined, and the effective length of the muffler section that described shell 4 and anechoic sheet 3 are formed is between 700-1200mm.The utility model compared with the prior art, because adopted the shell 4 of inversed-cone shape, the gas channel gross area is progressively expanded, again because the arrival end and the port of export of anechoic sheet 3 are streamlined, can reduce eddy current loss, simultaneously, owing to adopted the shell 4 that constitutes by microperforated panel 1 and backboard 2, so can effectively reduce noise.When the effective length of muffler section is between 800-900mm, can reach the noise reduction of 8dB.
Claims (1)
1, a kind of silencing apparatus of cooling tower, comprise shell and anechoic sheet, it is characterized in that: described shell is inverted cone, described shell is made up of microperforated panel and backboard, described microperforated panel is provided with the hole, the diameter in described hole is between 0.2-1.0mm, the punching rate of described microperforated panel is between 1%-3%, and the thickness of slab of described microperforated panel is cavity between described microperforated panel and the backboard between 0.5-1.0mm, described cavity depth is between 80mm-150mm, described anechoic sheet ringwise, described anechoic sheet is arranged in the described shell, the arrival end of described anechoic sheet and the port of export are streamlined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274168 CN2516932Y (en) | 2001-12-12 | 2001-12-12 | Noise reducer of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274168 CN2516932Y (en) | 2001-12-12 | 2001-12-12 | Noise reducer of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516932Y true CN2516932Y (en) | 2002-10-16 |
Family
ID=33678885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274168 Expired - Fee Related CN2516932Y (en) | 2001-12-12 | 2001-12-12 | Noise reducer of cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516932Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377387B (en) * | 2008-09-11 | 2011-11-09 | 金坛市塑料厂 | Noise reducing and anti-freezing device outside power plant cooling tower |
| CN101377389B (en) * | 2008-09-11 | 2011-11-09 | 金坛市塑料厂 | Included angle regulating mechanism of cooling tower sound absorption and noise reduction components |
| CN101377388B (en) * | 2008-09-11 | 2012-01-25 | 金坛市塑料厂 | Sound absorption and noise reduction plate special for cooling tower noise reduction and anti-freezing device |
| CN104428830A (en) * | 2012-07-05 | 2015-03-18 | 乐金华奥斯有限公司 | Interior sound absorption sheet and sound absorbing sound-proofing panel containing same |
| CN110726313A (en) * | 2019-10-28 | 2020-01-24 | 南京常荣声学股份有限公司 | Device that can be used to ventilation cooling tower energy-conservation carries effect in coordination to fall and makes an uproar |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
-
2001
- 2001-12-12 CN CN 01274168 patent/CN2516932Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377387B (en) * | 2008-09-11 | 2011-11-09 | 金坛市塑料厂 | Noise reducing and anti-freezing device outside power plant cooling tower |
| CN101377389B (en) * | 2008-09-11 | 2011-11-09 | 金坛市塑料厂 | Included angle regulating mechanism of cooling tower sound absorption and noise reduction components |
| CN101377388B (en) * | 2008-09-11 | 2012-01-25 | 金坛市塑料厂 | Sound absorption and noise reduction plate special for cooling tower noise reduction and anti-freezing device |
| CN104428830A (en) * | 2012-07-05 | 2015-03-18 | 乐金华奥斯有限公司 | Interior sound absorption sheet and sound absorbing sound-proofing panel containing same |
| CN104428830B (en) * | 2012-07-05 | 2018-07-31 | 乐金华奥斯有限公司 | Decorative acoustical plate and sound absorption formula sound insulationg board including the dicoration acoustical plate |
| CN110726313A (en) * | 2019-10-28 | 2020-01-24 | 南京常荣声学股份有限公司 | Device that can be used to ventilation cooling tower energy-conservation carries effect in coordination to fall and makes an uproar |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |