CN201867088U - Buffer noise reducer of natural ventilation cooling tower - Google Patents
Buffer noise reducer of natural ventilation cooling tower Download PDFInfo
- Publication number
- CN201867088U CN201867088U CN2010206297432U CN201020629743U CN201867088U CN 201867088 U CN201867088 U CN 201867088U CN 2010206297432 U CN2010206297432 U CN 2010206297432U CN 201020629743 U CN201020629743 U CN 201020629743U CN 201867088 U CN201867088 U CN 201867088U
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- Prior art keywords
- cooling tower
- noise
- cushion
- buffer
- elastic filler
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- 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 - Lifetime
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- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 238000009423 ventilation Methods 0.000 title abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 24
- 230000003139 buffering effect Effects 0.000 claims description 11
- 239000004698 Polyethylene Substances 0.000 claims 1
- 229920000573 polyethylene Polymers 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The utility model discloses a buffer noise reducer of a natural ventilation cooling tower, which comprises a buffer layer, wherein the buffer layer is supported by a support layer and is filled by elastic fillings, the elastic fillings are in parallel arrangement, the arrangement density range is between 1.6kg/m<2> and 2.2kg/m<2>, a distance from the bottom surface of the buffer layer to the water level is between 2cm and 10cm, the elastic fillings are preferably polypropylene elastic fillings with the fiber length being 300mm, and the support layer is preferably polypropylene grids with the hole diameter being 2mm. Through the buffer layer filled by elastic fillings in parallel arrangement, the water pouring noise can be effectively reduced, in addition, the buffer performance and the water permeability are good, and the buffer noise reducer does not have any adverse influence on the cooling tower operation.
Description
Technical field
The utility model relates to a kind of cooling stack buffering denoising device.
Background technology
In the power plant of non-direct current cooling, the circulating water cooling tower noise is the main reason that causes that factory circle of power plant noise exceeds standard and noise is complained.This has its certainty, and huge because of the cooling tower physical dimension, noise radiation face is big, and acoustical power is strong, and noise level is very slow with the decay naturally of distance, and on horizontal layout, cooling tower is general near factory circle.Along with the increasingly stringent of environmental requirement, the necessity of cooling tower buzz pollution control also displays.
The determining of noise abatement measure generally consider from three links, the one, set about from equipment itself, and administer and process modification by equipment, reduce the generating capacity of noise, effect a radical cure noise from sound source, this is the most positive a kind of measure the most completely; The 2nd, set about from the route of transmission of sound wave, by the acoustical insulation sound-deadening measure noise is farthest decayed in propagating the way; The 3rd, take safeguard procedures at receiving station, when preceding two kinds of measures can't be implemented, for protecting the individual emergency measure that not taked by hearing impairment.Power plant's cooling tower is generally the gravity-flow ventilation counterflow cooling tower, main noise derives from the bump of the water droplet and the water surface, and noise is to propagating all around by the cooling tower air inlet, on the route of transmission, take the acoustical insulation sound-deadening measure must guarantee not influence the intake of cooling tower, do not influence the effect of its cooling of ventilating, this is a prerequisite, and this just makes the use of sound-proof wall, ventilation silencer be subjected to very big restriction.
Analyze from sound generating mechanism, the cooling stack generating noise mainly is to cause owing to the water droplet that falls at a high speed impacts the water surface, also has sprinkle water sound on the filler of nozzle in addition, the sound that the whereabouts water droplet runs foul of each other, these influence minimum can ignoring, and the principal element that influences trickle noise acoustical power size has: a) water droplet impacts the speed of the water surface, it is directly relevant with the rain belt wind speed with height of drop, b) drop size, c) spray density, d) the trickle gross area.The spray density and the trickle gross area are determined by technology, can not change, therefore can only consider from slowing down the speed that water droplet impacts the water surface, the height that water droplet falls is that the designing requirement by air-admitting surface is determined, the wind speed that the rain belt makes progress can slow down the speed that water droplet falls to a certain extent, but to be the cooling tower production engineering specifications determine for this, unalterable, therefore consider before water droplet arrives the water surface, to increase a cushion, slow down water droplet and impact the speed of the water surface, simultaneously, because the cushion adjoined water surface, air intake is not had influence substantially, can not influence the cooling effectiveness of cooling tower.
The utility model content
For remedying the deficiencies in the prior art, the utility model provides a kind of traditional sound insulation noise elimination scheme that is different from, from the cooling stack buffer unit of sound source radical cure noise.
For achieving the above object, the utility model adopts following technical scheme:
Cooling stack buffering denoising device, it comprises cushion, cushion is by support layer supports.
Described cushion is filled by elastic filler, and elastic filler is arranged in parallel, and the layout density range is 1.6kg/m2-2.2kg/m2.
Described cushion bottom surface apart from the water surface apart from 2-10cm.
It is the polypropylene elastic filler of 300mm that fibre length is preferably selected in described elastic filler.
The polypropylene graticule mesh of the preferred eyelet 2mm of described supporting layer.
Beneficial effect: the cushion of the utility model by filling by parallel placement elastic filler, can reduce the trickle noise effectively, and shock-absorbing capacity and water penetration are good, to the cooling tower operation without any adverse effect.
Description of drawings
Fig. 1 noise reduction cushion floor plan;
Fig. 2 noise reduction cushion facade layout drawing;
Wherein: 1 polypropylene elastic filler, 2 polypropylene graticule mesh.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As illustrated in fig. 1 and 2, a kind of cooling stack buffering denoising device, it comprises cushion, cushion is by support layer supports; Described cushion is filled by elastic filler, and elastic filler is arranged in parallel, and the layout density range is 1.6kg/m2-2.2kg/m2; Described cushion bottom surface apart from the water surface apart from 2-10cm; It is the polypropylene elastic filler 1 of 300mm that fibre length is preferably selected in described elastic filler; The polypropylene graticule mesh of the preferred eyelet 2mm of described supporting layer.
Key point of the present utility model is the design of cushion, determines the effect of final noise reduction and the economy and the security of engineering construction, and buffering noise reduction material therefor should satisfy following requirement:
1) shock-absorbing capacity is good, can reduce the trickle noise effectively
2) obvious resonance does not take place in material itself, otherwise directly influences final noise reduction
3) circulating water quality is had no adverse effects
4) good water permeability can not have ponding
5) enough intensity, life-span are arranged
By comprehensive analysis relatively, find that a kind of polypropylene elastic filler 1 of extensive use can be satisfied above basic demand in biological process of wastewater treatment, have moisture-proof heat preferably, ageing-resistant performance, intensity height.By a large amount of simulated experiments, proved the arrangement of optimizing filler by appropriate design, cushion can reach desirable noise reduction.
Carry out a large amount of noise reduction tests by padded coaming to the variety classes different size, result of the test shows that from the angle of Technological Economy, 300mm number (fibre length) elastic filler is optimal selection, reach the noise reduction target more than 15 decibels, minimum filler arranges that density is 1.6kg/m
2For with a kind of spray density, filler is arranged and is increased to density to a certain degree the back noise reduction is tending towards a steady state value, no longer arranges the increase of density and increase the limit noise reduction of just this noise reduction mode of this steady state value (19 decibels) along with filler;
Filler arranges that density has a big turnover in 2.2kg/m2 place curve; the trend of noise reduction increase after this is very slow, so, if this noise abatement measure is applied to engineering reality; the layout density of filler should be greater than 2.2kg/m2, because it is little to increase the packing density meaning again.
Cushion has direct influence apart from the height of the water surface to noise reduction, this is because there is graticule mesh to support at the bottom of the cushion, when filler arranges that density is not very big, graticule mesh itself also plays certain noise reduction effect, and when cushion with after the water surface contacts, the noise reduction effect of bottom graticule mesh has not just existed, cause the general effect variation, if and cushion is excessive apart from water surface elevation, arrive the water surface once more through the current that cushion and can cause the secondary noise, also can cause the decline of overall noise reduction.Simulated experiment is the result prove, the cushion bottom surface is 2-10cm apart from the optimum height scope of the water surface, and the buffering noise reduction is the 15-19 decibel.
Claims (5)
1. cooling stack buffering denoising device is characterized in that it comprises cushion, and cushion is by support layer supports.
2. cooling stack buffering denoising device as claimed in claim 1 is characterized in that described cushion is filled by elastic filler, and elastic filler is arranged in parallel, and the layout density range is 1.6kg/m
2-2.2kg/m
2
3. cooling stack as claimed in claim 1 buffering denoising device is characterized in that, described cushion bottom surface apart from the water surface apart from 2-10cm.
4. cooling stack buffering denoising device as claimed in claim 2 is characterized in that it is the polypropylene elastic filler of 300mm that fibre length is preferably selected in described elastic filler.
5. cooling stack buffering denoising device as claimed in claim 1 is characterized in that the polyethylene graticule mesh of the preferred eyelet 2mm of described supporting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206297432U CN201867088U (en) | 2010-11-29 | 2010-11-29 | Buffer noise reducer of natural ventilation cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206297432U CN201867088U (en) | 2010-11-29 | 2010-11-29 | Buffer noise reducer of natural ventilation cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867088U true CN201867088U (en) | 2011-06-15 |
Family
ID=44138240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206297432U Expired - Lifetime CN201867088U (en) | 2010-11-29 | 2010-11-29 | Buffer noise reducer of natural ventilation cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560490A (en) * | 2017-06-29 | 2018-01-09 | 大唐贵州兴仁发电有限公司 | A kind of high-order receipts water cooling tower noise reduction water-saving groove |
| CN109467147A (en) * | 2018-12-27 | 2019-03-15 | 北京洁禹通环保科技有限公司 | Sewage buffer unit and water treatment facilities |
-
2010
- 2010-11-29 CN CN2010206297432U patent/CN201867088U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560490A (en) * | 2017-06-29 | 2018-01-09 | 大唐贵州兴仁发电有限公司 | A kind of high-order receipts water cooling tower noise reduction water-saving groove |
| CN109467147A (en) * | 2018-12-27 | 2019-03-15 | 北京洁禹通环保科技有限公司 | Sewage buffer unit and water treatment facilities |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130312 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130312 Address after: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee after: Shandong Research Inst. of Electric Power Patentee after: State Grid Corporation of China Address before: 250002 Ji'nan City Central District, Shandong, No. 2 South Road, No. 500 Patentee before: Shandong Research Inst. of Electric Power |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |