CN201050945Y - Noise elimination flow guide device for large natural ventilation cooling tower - Google Patents
Noise elimination flow guide device for large natural ventilation cooling tower Download PDFInfo
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- CN201050945Y CN201050945Y CNU2007201083613U CN200720108361U CN201050945Y CN 201050945 Y CN201050945 Y CN 201050945Y CN U2007201083613 U CNU2007201083613 U CN U2007201083613U CN 200720108361 U CN200720108361 U CN 200720108361U CN 201050945 Y CN201050945 Y CN 201050945Y
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Abstract
The utility model discloses a device for eliminating noise, in particular to a noise-abatement diversion device for reducing the noise of large natural ventilation cooling tower. The utility model comprises a noise-abatement diversion structure, a head cover plate, a bottom surface, a noise source and the like, wherein the noise-abatement diversion structure is arranged by noise-abatement diversion flow sheets side by side, keeps a certain interval and is fixed through a beam and a upright column. The utility model has the advantages of high noise reduction, high structural stability, small drag coefficient, compact structure, beautiful shape, and simple maintenance and the like. The utility model is capable of being used in the fields which have a large noise source such as various large power plants and the like, and is capable of effectively improving the surrounding environment.
Description
Technical field
The utility model is to belong to a kind of equipment that abates the noise, and refers in particular to a kind of noise elimination guiding device that is used for large-scale cooling stack noise reduction.
Background technology
At present, domestic most thermal power plants adopt reverse-flow cooling stack system to the recirculated water processing of lowering the temperature, but because each designing institute still continues to use original Design Mode when cooling tower is designed at present, shortage is to the fall into water consideration of the noise pollution produced of cooling tower, makes that the cooling tower buzz problem that disturbs residents is more and more serious.In recent years, each environmental protection mechanism all furthers investigate this difficult problem both at home and abroad, but traditional sound barrier noise reduction mode and drowning silencing apparatus can not produce best effect basically.
(1) acoustic barrier method: acoustic barrier generally is designed to distance apart from the cooling tower air inlet greater than cooling tower air inlet height, and barrier height is equal to or greater than the distance of barrier to air inlet.Noise reduction is generally at 10～15dBA, and the noise reduction limit is about 20dBA; Little to the influence of ventilating, investment puts in place, safeguards fairly simple; The specification requirement of building sound barrier is not high yet, but quite big to structural requirement, noise reduction also is subjected to the influence of surrounding buildings except relevant with barrier itself, and takes up an area of bigger.Noise exceeds standard when being no more than 15dBA, can consider to adopt:
(2) drowning noise elimination method: promptly more than the water surface of cooling tower bottom, the drop energy-eliminating noise-reducing material is installed, is set about reducing noise source from the source.Noise reduction is generally at 6～9dBA, and advantage is that first investment is less, and to not influence of ventilation and heat, shortcoming is that noise reduction is less, and unstable, and maintenance workload is big, and is fragile, needs to continue to drop into.Noise exceeds standard and is no more than 7dBA, and when winter not occurring extensive freezing phenomenon, can adopt.
Summary of the invention
The utility model has proposed a kind of features simple structure to not enough in the prior art, and the good denoising device of actual effect.
The utility model is achieved by following technical proposals:
The noise elimination guiding device that is used for large-scale cooling stack noise reduction, it comprises noise elimination flow-guiding structure, lamina tecti, bottom surface, noise source, it is characterized in that eliminating the noise flow-guiding structure, lamina tecti, bottom surface forms a continuous enclosed construction, and noise source is positioned at continuous enclosed construction.
As preferably, above-mentioned noise elimination flow-guiding structure is to be arranged side by side by some noise elimination flow deflectors, and the spacing of 5～30cm is arranged each other, is fixed by crossbeam, column mutually.
Innovation of the present utility model is exactly that traditional sound reduction method is applied to a new field.In traditional noise abatement engineering, silencer is widely applied as a kind of conventional governing measure, but major applications is in the intake and exhaust of air force equipment such as blower fan, the inlet and outlet energy of Architectural Equipment machine rooms such as Air Conditioning Facilities and the positions such as airduct pipeline of ventilation and air conditioning system, its apparent size is less, resistance loss requires lower, though and the noise elimination flow deflector technology of this use dissipative muffler roughly the same on principle, but fully calculated this product to the influence of cooling tower effect and the influence of noise reduction, it is insignificant after it is installed to the temperature drop performance impact of cooling tower, and the noise reduction with tall and big 24dBA, this administers on the history at domestic before cooling tower buzz is peerless.On the other hand, up to 12 meters, the integral body noise elimination flow deflector structure that is about 400 meters also is a kind of breakthrough and innovation in shape.
Next is a breakthrough to traditional cooling tower noise abatement method and degree, has novelty, in the noise development history of China, main method to large-scale reverse-flow cooling stack noise abatement is sound barrier method and drop energy-eliminating method, both to the maximum noise reduction of specific factory's circle point or sensitive spot all below 20dBA.And require to cooling tower buzz fall reach 24dBA and above be to lack effective method.By adopting airflow design to reduce drag losses to the wind-guiding head, guarantee that finally the temperature drop effect of noise elimination flow deflector installation back cooling tower is controlled within the claimed range in the utility model, noise reduction satisfies the designing requirement of 24dBA.
In addition, to be this project be cooling tower design, construct environmental transformation administration project after finishing to innovation part of the present utility model.The utility model is taken the resistance of noise elimination flow deflector part into account in the cooling tower resistance coefficient, can not influence the cooling effect of cooling tower at all.
Beneficial effect: the utility model has adopted a kind of simple method, realized noise elimination effect to large-scale cooling device, have good environmental effect, have that high noise reduction, high structural stability, resistance coefficient are little, an advantage such as compact conformation, appearance looks elegant, maintenance are simple.
Compare as follows to existing cooling tower noise-reduction method:
| Method | The noise elimination flow deflector | Sound barrier | Fall into water and eliminate the noise |
| Noise reduction | Can satisfy the requirement of high noise reduction, noise reduction can reach 35dBA, even higher | Noise reduction is generally at 10～15dBA, and the noise reduction limit is about 20dBA | Noise reduction is generally at 6～9dBA |
| The noise reduction scope | The Zone Full that noise elimination guide vane means one side is housed had same noise reduction | Noise reduction is better in the scope of sound barrier shadow zone, and diffraction zone harmony clear zone noise reduction is very poor | The zone that the silencing apparatus that falls into water is housed had same noise reduction |
| The structural strength requirement | The noise elimination flow deflector is connected with tower body, needs very little wind resistance load, and self material | Sound barrier needs higher wind resistance load, therefore to basis and steel construction requirement of strength | Drowning silencing apparatus need be considered impact resistance intensity, avoids ice cube bump and destroying in winter |
| Lighter, require lower to underlying strength | Greatly | ||
| Equipment influences situation to cooling tower | Affects cooling tower intake, but can not influence the whole generating efficiency of power plant | The cooling tower air intake there is tiny influence, but is not clearly | Drowning silencing apparatus does not exert an influence to the cooling tower air intake substantially |
| Occupation area of equipment | Equipment is close to the cooling tower body, and floor space is very little | Around cooling tower, need very big floor space | Fall into water silencing apparatus in the pond, do not take up an area of substantially |
| Equipment appearance | Facility compact, good looking appearance | Equipment is high wall construction, and visual effect is relatively poor, and profile is unbecoming | Fall into water silencing apparatus at Chi Tizhong, do not influence outward appearance |
| Installation and maintenance | Anechoic sheet is a modular construction, installs simply, and required maintenance is less | The sound barrier height is bigger, and the outer surface corrosion-vulnerable needs a certain amount of installation and maintenance work | The silencing apparatus that falls into water is fragile, need often change, so the installation and maintenance workload is bigger |
| Construction costs | Cost performance is higher | Lower | Higher (needing to continue to drop into) |
Description of drawings
Fig. 1 cooling tower noise elimination guiding device floor plan
Fig. 2 flow deflector front view of eliminating the noise
Fig. 3 flow deflector vertical view of eliminating the noise
Fig. 4 cooling tower noise elimination guiding device side view
1, cooling tower 2, noise elimination flow deflector 3, column 4, crossbeam 5, inverted draw cut steel 6, air intake place 7, lamina tecti 8, pond
The specific embodiment
Below in conjunction with accompanying drawing, implementation process of the present utility model is further described:
Embodiment one: parts such as noise elimination flow deflector are set around a large cooling column, at first along the pond of cooling tower concrete walls, set up high H shaped steel column for the HW300 of 11.3m * 200 every 4.8m, the upright post basic deck is fixed on the pond of cooling tower concrete walls with chemical anchor bolts.About 5.5m eminence is installed crossbeam (the H shaped steel of HW200 * 200) in the middle of column again, crossbeam two (the H shaped steel of HW150 * 150) is installed at the place at the column top, perpendicular to crossbeam two the top plate supporting channel-section steel is installed, channel-section steel one end is connected with the cooling tower concrete wall surface, and an end exceeds crossbeam two 500mm.Next the noise elimination flow deflector of lower floor is installed,, two small pieces noise elimination flow deflectors is installed before and after column respectively, column is trapped among the inside wherein in stud.After lower floor's noise elimination flow deflector is finished installation, noise elimination flow deflector in upper strata is installed again, stud still fences up column with two small pieces noise elimination flow deflectors.Lay the FC lamina tecti at last on the crossbearer channel-section steel, after the installation of FC plate, the installation of whole noise elimination flow deflector unit has just been finished.Form a noise elimination guiding device around whole cooling tower.
Implement two: can change the size of noise elimination flow deflector according to the size of noise source and the difference of coming the source position, form a noise elimination guiding device of sealing continuously, can realize the effect that abates the noise equally.
Claims (2)
1. the noise elimination guiding device that is used for large-scale cooling stack noise reduction, it comprises noise elimination flow-guiding structure, lamina tecti, bottom surface, noise source, it is characterized in that eliminating the noise flow-guiding structure, lamina tecti, bottom surface forms a continuous enclosed construction, and noise source is positioned at continuous enclosed construction.
2. the noise elimination guiding device that is used for large-scale cooling stack noise reduction according to claim 1, it is characterized in that described noise elimination flow-guiding structure is to be arranged side by side by some noise elimination flow deflectors, the spacing that 5～30cm is arranged is each other fixed by crossbeam, column mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201083613U CN201050945Y (en) | 2007-04-20 | 2007-04-20 | Noise elimination flow guide device for large natural ventilation cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201083613U CN201050945Y (en) | 2007-04-20 | 2007-04-20 | Noise elimination flow guide device for large natural ventilation cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050945Y true CN201050945Y (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201083613U Expired - Lifetime CN201050945Y (en) | 2007-04-20 | 2007-04-20 | Noise elimination flow guide device for large natural ventilation cooling tower |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN101749964B (en) * | 2010-01-05 | 2012-03-07 | 济南旭日环保设备有限公司 | Noise eliminating and anti-freezing device of cooling tower |
| CN102829650A (en) * | 2012-07-20 | 2012-12-19 | 浙江东发环保工程有限公司 | Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant |
| CN104567452A (en) * | 2015-01-14 | 2015-04-29 | 华能桐乡燃机热电有限责任公司 | Outdoor arranged noise device of gas turbine |
| CN108871007A (en) * | 2018-08-03 | 2018-11-23 | 华电电力科学研究院有限公司 | A kind of large size cooling stack automatic adjustment denoising device and its noise-reduction method |
| CN109945680A (en) * | 2019-03-28 | 2019-06-28 | 广东览讯科技开发有限公司 | Cooling tower with silencer |
-
2007
- 2007-04-20 CN CNU2007201083613U patent/CN201050945Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN101749964B (en) * | 2010-01-05 | 2012-03-07 | 济南旭日环保设备有限公司 | Noise eliminating and anti-freezing device of cooling tower |
| CN102829650A (en) * | 2012-07-20 | 2012-12-19 | 浙江东发环保工程有限公司 | Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant |
| CN104567452A (en) * | 2015-01-14 | 2015-04-29 | 华能桐乡燃机热电有限责任公司 | Outdoor arranged noise device of gas turbine |
| CN108871007A (en) * | 2018-08-03 | 2018-11-23 | 华电电力科学研究院有限公司 | A kind of large size cooling stack automatic adjustment denoising device and its noise-reduction method |
| CN109945680A (en) * | 2019-03-28 | 2019-06-28 | 广东览讯科技开发有限公司 | Cooling tower with silencer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080423 |
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| CX01 | Expiry of patent term |