CN103471419A - Directional exhaust noise attenuation system of large machine ventilation cooling tower - Google Patents
Directional exhaust noise attenuation system of large machine ventilation cooling tower Download PDFInfo
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- CN103471419A CN103471419A CN2013104354212A CN201310435421A CN103471419A CN 103471419 A CN103471419 A CN 103471419A CN 2013104354212 A CN2013104354212 A CN 2013104354212A CN 201310435421 A CN201310435421 A CN 201310435421A CN 103471419 A CN103471419 A CN 103471419A
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- cooling tower
- sound absorption
- noise
- rectangular frame
- guider
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 238000009423 ventilation Methods 0.000 title abstract 3
- 238000010521 absorption reaction Methods 0.000 claims abstract description 53
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 229920000742 Cotton Polymers 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000004744 fabric Substances 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 239000011490 mineral wool Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- 239000000378 calcium silicate Substances 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical group [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000011491 glass wool Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 230000003584 silencer Effects 0.000 description 7
- 230000008030 elimination Effects 0.000 description 6
- 238000003379 elimination reaction Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a directional exhaust noise attenuation system of a large machine ventilation cooling tower, which has the advantages of good directional noise attenuation effect, little pressure loss and low cost. The directional exhaust noise attenuation system comprises a plurality of noise absorption and insulation guide devices. Each rectangular noise absorption and insulation guide device comprises perforated plates, hydrophobic glass wool cloth and a light steel keel, wherein a rectangular frame of each noise absorption and insulation guide device is composed of the light steel keel; the perforated plates are arranged on the outer sides of two long sides of the rectangular frame; the hydrophobic glass wool cloth is arranged between the perforated plates and the rectangular frame. The system also comprises a concrete wall; the concrete wall is positioned on the periphery of an exhaust outlet of the large machine ventilation cooling tower; two short sides of the rectangular frame of each noise absorption and insulation guide device are arranged on the concrete wall; each noise absorption and insulation guide device also comprises noise absorption cotton and a light noise insulation plate, wherein the light noise insulation plate is positioned in the middle of the rectangular frame, and two sides of the light noise insulation plate are provided with the noise absorption cotton.
Description
Technical field
The present invention relates to a kind of noise attentuation system, particularly relate to a kind of noise directive property attenuation factor during for large-scale induced cooling tower air draft.
Background technology
Large-scale induced cooling tower now has been widely used in the large and medium-sized industrial enterprise such as steam power plant, thermal power plant, coalification factory, for the main unit equipment of on-site provides cooling service.At present, common large-scale induced cooling tower structure is large fan to be lifted on to the cooling tower frame top draw air by recirculated water, and the hot-air after heat exchange is discharged from the blower fan top.Due to large fan, at high empty position, its running noises produces and has a strong impact on surrounding environment.Noise reduction system commonly used is to fix a silencer at exhaust outlet at present, a kind of directed denoising device is disclosed in Chinese utility model patent specification CN202831277, comprise agent structure, guide flow noise elimination cylinder, ventilating noise silencer and acoustic barrier, agent structure is sealed towards the side outside target the noise battery limits, only described noise battery limits are opened wide towards the side of target, the noise battery limits refer to the zone had as one or more working equipments of noise source; The guide flow noise elimination cylinder is arranged on the top of described one or more working equipments as noise source; Ventilating noise silencer is arranged between described noise battery limits and described target; Acoustic barrier is arranged between two working equipments adjacent in described noise battery limits.In Chinese utility model patent invention book CN202793069, a kind of cooling tower noise eliminating silencer is disclosed in addition, comprising some noise elimination flow deflectors are arranged, the upper end of noise elimination flow deflector is provided with lamina tecti, noise elimination flow deflector, lamina tecti and isolated footing form a continuous enclosed construction of " 7 " font, the noise elimination flow deflector includes compound sound absorption body, the external acoustic absorption nonwoven fabrics that is enclosed with of compound sound absorption, acoustic absorption nonwoven fabrics is provided with perforated plate outward, and two ends are provided with the wind-guiding head.Lamina tecti is compound Felt, and compound Felt is synthesized by outside plate color steel, interior filled composite sound absorption body, the combination of inner panel perforated plate, and inside is fixed with reinforcement.Although silencer can solve noise problem, being directed upwards towards property of noise attenuating is general, and the pressure loss of silencer is excessive, affects the operational efficiency of cooling tower.
Summary of the invention
The technical problem to be solved in the present invention is to provide the large-scale induced cooling tower air draft noise directive property attenuation factor that a kind of noise directive property attenuating is good, the pressure loss is little, cost is low.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, comprise several sound absorption guiders, described sound absorption guider comprises perforated plate, hydrophobic glass silk cloth, lightgage steel joist and concrete walls, described sound absorption guider is rectangle, its rectangular frame consists of lightgage steel joist, in described rectangular frame, the outside on longer both sides is equipped with perforated plate, is provided with hydrophobic glass silk cloth between perforated plate and keel frame.Described concrete walls are positioned at induced cooling tower exhaust outlet periphery, described several sound absorption guider arranged crosswise, wherein the shorter both sides of rectangular frame are arranged on concrete walls, described sound absorption guider also comprises the light sound-insulation plate of sound absorption cotton and rectangle, described light sound-insulation plate is positioned at the middle part of rectangular frame, its two ends are arranged on rectangular frame, and it is cotton that described light sound-insulation plate both sides are filled with sound absorption.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, wherein said concrete walls and sound absorption guider height are between 3-30m.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, wherein said light sound-insulation plate is calcium silicate board, plasterboard, cement pressure plate or damping sheet, the number of plies is installed between the 1-4 layer, described light sound-insulation plate thickness is between 6-12mm.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, wherein said sound absorption cotton is mineral wool or rock wool, the number of plies is installed between the 1-4 layer, thickness between 50-150mm, mineral wool unit weight scope 32-60kg/m wherein
3, rock wool unit weight scope 60-120kg/m
3.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, wherein said perforated plate is aluminium sheet or galvanized sheet, thickness between 0.5-1.2mm, punching rate scope 20%-30%.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor, the dismantled and assembled form of the whole employing of wherein said sound absorption guider.
The large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor difference from prior art is that the large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor builds concrete walls by laying bricks or stones in large-scale induced cooling tower exhaust outlet periphery, and installation contains light sound-insulation plate and the cotton sound absorption guider of sound absorption above concrete, the directed discharge of guiding noise when guaranteeing the normal discharge of blower fan air draft air-flow, design height and the sound absorption structures such as the light sound-insulation plate of surface configuration and the cotton that absorbs sound thereof by the sound absorption guider reach the purpose that air draft directive property decays.When the induced cooling tower exhaust outlet, while being a plurality of, a plurality of sound absorption devices can be divided into the air draft air-flow some unit, make cooling tower air draft noise all according to the assigned direction discharge, and noise is decayed along the directive property direction.The location of arranging of sound absorption guider can suitably be adjusted according to acoustics design requirement or noise-sensitive direction.The present invention does not use silencer, and the sound absorption guider of installation is in the exhaust outlet periphery, does not cover the exhaust outlet top, and the system that can guarantee has the lower pressure loss, and air current composition and the cooling effectiveness of cooling tower do not produced to considerable influence.The present invention contrasts with at present common cooling tower buzz control measures, in the situation that reach equal noise reduction target, by arranging and highly selection of sound absorption device, can realize optimum input-output ratio.
Below in conjunction with accompanying drawing, large-scale induced cooling tower air draft noise directive property attenuation factor of the present invention is described further.
The accompanying drawing explanation
The structural representation that Fig. 1 is the large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor;
The structural representation that Fig. 2 is sound absorption guider in the large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor;
The horizontal layout schematic diagram that Fig. 3 is the large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor.
The specific embodiment
As shown in Figure 1, the large-scale induced cooling tower air draft of the present invention noise directive property attenuation factor comprises concrete walls 1 and sound absorption guider 2.Concrete walls 1 are positioned at induced cooling tower exhaust outlet 3 peripheries, and sound absorption guider 2 is arranged on concrete walls 1.Concrete walls 1 do not wait in the 3-30m scope with the design height of sound absorption guider 2, can design separately according to the noise source different in kind.
As shown in Figures 2 and 3, sound absorption guider 2 is dismountable design, is convenient to staff's maintenance and changes, and comprises perforated plate 4, hydrophobic glass silk cloth 5, sound absorption cotton 7, light sound-insulation plate 8 and lightgage steel joist 6.Sound absorption guider 2 is rectangle, and its rectangular frame consists of lightgage steel joist 6, and wherein in rectangular frame, the outside on longer both sides is equipped with perforated plate 4, perforated plate 4 is selected galvanized sheet, thickness between 0.5-1.2mm, punching rate scope 20%-30%, perforated plate 4 also can be selected aluminium sheet.The shorter both sides of perforated plate 4 are arranged on concrete walls 1.Be provided with hydrophobic glass silk cloth 5 between perforated plate 4 and rectangular frame.Light sound-insulation plate 8 is selected calcium silicate board, is positioned at the middle part of rectangular frame, and thickness is between 6-12mm, and its two ends are arranged on rectangular frame.In addition, light sound-insulation plate 8 also can be selected plasterboard, cement pressure plate or damping sheet, the number of plies is installed between the 1-4 layer, and thickness is between 6-12mm.Light sound-insulation plate 8 both sides are filled with that sound absorption is cotton 7, and mineral wool is selected in sound absorption cotton 7, the number of plies is installed in 1-4 layer scope, thickness between 50-150mm, unit weight scope 32-60kg/m
3, sound absorption cotton 7 also can be selected rock wool, unit weight scope 60-120kg/m
3.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (6)
1. one kind large-scale induced cooling tower air draft noise directive property attenuation factor, comprise several sound absorption guiders, described sound absorption guider comprises perforated plate, hydrophobic glass silk cloth, lightgage steel joist and concrete walls, described sound absorption guider is rectangle, its rectangular frame consists of lightgage steel joist, in described rectangular frame, the outside on longer both sides is equipped with perforated plate, be provided with hydrophobic glass silk cloth between perforated plate and rectangular frame, it is characterized in that: described concrete walls are positioned at induced cooling tower exhaust outlet periphery, described several sound absorption guider arranged crosswise, wherein the shorter both sides of rectangular frame are arranged on concrete walls, described sound absorption guider also comprises the light sound-insulation plate of sound absorption cotton and rectangle, described light sound-insulation plate is positioned at the middle part of rectangular frame, its two ends are arranged on rectangular frame, it is cotton that described light sound-insulation plate both sides are filled with sound absorption.
2. large-scale induced cooling tower air draft noise directive property attenuation factor according to claim 1, it is characterized in that: described concrete walls and sound absorption guider height are between 3-30m.
3. large-scale induced cooling tower air draft noise directive property attenuation factor according to claim 1, it is characterized in that: described light sound-insulation plate is calcium silicate board, plasterboard, cement pressure plate or damping sheet, the number of plies is installed between the 1-4 layer, described light sound-insulation plate thickness is between 6-12mm.
4. large-scale induced cooling tower air draft noise directive property attenuation factor according to claim 1, it is characterized in that: described sound absorption is cotton is mineral wool or rock wool, the number of plies is installed between the 1-4 layer, thickness between 50-150mm, mineral wool unit weight scope 32-60kg/m wherein
3, rock wool unit weight scope 60-120kg/m
3.
5. large-scale induced cooling tower air draft noise directive property attenuation factor according to claim 1, it is characterized in that: described perforated plate is aluminium sheet or galvanized sheet, thickness between 0.5-1.2mm, punching rate scope 20%-30%.
6. large-scale induced cooling tower air draft noise directive property attenuation factor according to claim 1, is characterized in that: the dismantled and assembled form of the whole employing of described sound absorption guider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104354212A CN103471419A (en) | 2013-09-23 | 2013-09-23 | Directional exhaust noise attenuation system of large machine ventilation cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104354212A CN103471419A (en) | 2013-09-23 | 2013-09-23 | Directional exhaust noise attenuation system of large machine ventilation cooling tower |
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| Publication Number | Publication Date |
|---|---|
| CN103471419A true CN103471419A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104354212A Pending CN103471419A (en) | 2013-09-23 | 2013-09-23 | Directional exhaust noise attenuation system of large machine ventilation cooling tower |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
| CN104296556A (en) * | 2014-10-27 | 2015-01-21 | 安徽三星环保装备制造有限公司 | Hyperbolic cooling tower water spray noise abatement and thermal insulation system |
| CN105386617A (en) * | 2015-12-04 | 2016-03-09 | 华油飞达集团有限公司 | Movable silent generator room |
| CN107240872A (en) * | 2017-06-20 | 2017-10-10 | 中国电力科学研究院 | A kind of outdoor electric power equipment box body and its noise-reduction method |
| CN114562894A (en) * | 2022-02-28 | 2022-05-31 | 山东大学 | Mechanical ventilation counter-flow wet cooling tower group with rain zone structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449180Y (en) * | 2000-08-01 | 2001-09-19 | 潘全芳 | Silencer for air outlet of cooling tower |
| CN201151957Y (en) * | 2007-11-29 | 2008-11-19 | 北京绿创声学工程股份有限公司 | Light weight sound isolation sound absorption wall structure |
| KR20110132082A (en) * | 2010-06-01 | 2011-12-07 | (주)써스텍 | Counterflow Cooling Tower with Noise Protection Structure |
| CN102400504A (en) * | 2011-07-29 | 2012-04-04 | 北京绿创声学工程股份有限公司 | Modularized light sound insulation wall and installation method thereof |
-
2013
- 2013-09-23 CN CN2013104354212A patent/CN103471419A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449180Y (en) * | 2000-08-01 | 2001-09-19 | 潘全芳 | Silencer for air outlet of cooling tower |
| CN201151957Y (en) * | 2007-11-29 | 2008-11-19 | 北京绿创声学工程股份有限公司 | Light weight sound isolation sound absorption wall structure |
| KR20110132082A (en) * | 2010-06-01 | 2011-12-07 | (주)써스텍 | Counterflow Cooling Tower with Noise Protection Structure |
| CN102400504A (en) * | 2011-07-29 | 2012-04-04 | 北京绿创声学工程股份有限公司 | Modularized light sound insulation wall and installation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008748A (en) * | 2014-05-06 | 2014-08-27 | 北京绿创声学工程设计研究院有限公司 | Shuttle type sheet silencer |
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
| CN104296556A (en) * | 2014-10-27 | 2015-01-21 | 安徽三星环保装备制造有限公司 | Hyperbolic cooling tower water spray noise abatement and thermal insulation system |
| CN105386617A (en) * | 2015-12-04 | 2016-03-09 | 华油飞达集团有限公司 | Movable silent generator room |
| CN107240872A (en) * | 2017-06-20 | 2017-10-10 | 中国电力科学研究院 | A kind of outdoor electric power equipment box body and its noise-reduction method |
| CN114562894A (en) * | 2022-02-28 | 2022-05-31 | 山东大学 | Mechanical ventilation counter-flow wet cooling tower group with rain zone structure |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Luo Xiaoqiang Inventor before: Luo Qiang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LUO QIANG TO: LUO XIAOQIANG |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |