CN107489133A - Sound-absorbing wall - Google Patents

Sound-absorbing wall Download PDF

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Publication number
CN107489133A
CN107489133A CN201710754355.3A CN201710754355A CN107489133A CN 107489133 A CN107489133 A CN 107489133A CN 201710754355 A CN201710754355 A CN 201710754355A CN 107489133 A CN107489133 A CN 107489133A
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CN
China
Prior art keywords
sound
power station
absorbing wall
air
wall
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Granted
Application number
CN201710754355.3A
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Chinese (zh)
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CN107489133B (en
Inventor
钱月珍
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Tianjin Intelligent Investment Technology Achievement Transformation Co ltd
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Individual
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B9/00Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B8/00Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/06Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The present invention provides a kind of sound-absorbing wall, is implemented in power station downstream, the sound-absorbent wall is made up of to the one side in power station poromerics;The top in the power station is provided with the air jet system towards the sound-absorbing wall, and when the air jet system is to the sound-absorbing wall jet, high velocity air layer is formed above the water surface between power station, sound-absorbing wall;The air jet system provides pressure-air by high pressure gas bag, and the high pressure gas bag is by air-pump inflating.The power station noise reduction system can largely reduce the flood discharge noise in power station.

Description

Sound-absorbing wall
The application is the divisional application of the entitled power station noise reduction system of Application No. 201610178844.4.
Technical field
The present invention relates to water engineering facility field, especially, is related to a kind of power station noise reduction system.
Background technology
Current power station produces huge noise in flood discharge, and not rational denoising structure;Reason is, The impact of water body produces substantial amounts of low frequency noise, and this kind of low frequency noise is brought row constraint into even with sound insulation, also substantially do not imitated Fruit, thump are easy to through common soundproof wall;Therefore, the noise in power station affects surrounding enviroment always.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of power station noise reduction system, the power station noise reduction system The flood discharge noise in power station can largely be reduced.
The technical solution adopted for the present invention to solve the technical problems is:The power station noise reduction system includes being implemented in water power Stand the sound-absorbing wall in downstream, the sound-absorbent wall is made up of to the one side in power station poromerics;The top in the power station is provided with Towards the air jet system of the sound-absorbing wall, when the air jet system is to the sound-absorbing wall jet, between power station, sound-absorbing wall High velocity air layer is formed above the water surface;The air jet system provides pressure-air by high pressure gas bag, and the high pressure gas bag is by air pump Inflation.
Preferably, sound insulation band has been built in the both sides of the section between the power station and sound-absorbing wall respectively.
Preferably, the sound-absorbing wall is in penetrating before and after the part below the water surface, current is not formed and stopped;Further Ground, the sound-absorbing wall include knee wall and sound absorbing layer;The knee wall is made up of concrete or steel construction grid, front and rear penetrating; The light microporous material that the sound absorbing layer is less than water by density is formed, in the width rectangle equal with the knee wall, and with The knee wall is mutually constrained by chute, can freely up and down be slided along the knee wall;So that sound absorbing layer follows the downstream water surface Fluctuation and slide up and down, the noise above the water surface absorbs all the time, while the current of lower section is not formed and stopped again.
The beneficial effects of the present invention are:When power station flood discharge, due to the impact direction of water body, make most of noise to Downstream is transmitted, i.e., to the sound-absorbing wall transmission;And due to the air jet system on the water surface between power station, sound-absorbing wall it is square Into high velocity air layer;Make low frequency noise by the high velocity air layer to sound-absorbing wall transmission, so that low frequency noise is in high velocity air Frequency offset phenomena occurs in layer, its frequency substantially increases, so as to be easy to be absorbed by the sound-absorbing wall.
Brief description of the drawings
Fig. 1 is the schematic diagram of this power station noise reduction system embodiment one.
Fig. 2 is the structural representation of sound-absorbing wall in this power station noise reduction system embodiment two.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples:
In the embodiment one shown in Fig. 1, the power station noise reduction system includes being implemented in the sound-absorbing wall 2 in the downstream of power station 1, The sound-absorbing wall 2 is made up of towards the one side in power station 1 poromerics;The top in the power station 1 is provided with towards the sound-absorbing The air jet system 3 of wall 2, when the air jet system 3 is to 2 jet of sound-absorbing wall, on the water surface between power station 1, sound-absorbing wall 2 It is square into high velocity air layer 4;The high velocity air layer 4 spreads gradually downward from air jet system 3 to sound-absorbing wall 2, makes at sound-absorbing wall 2 Above the water surface faster gas flow rate is respectively provided with whole region.
Above-mentioned power station noise reduction system, the air jet system 3 provide pressure-air, the high pressure gas bag by high pressure gas bag By air-pump inflating.
In addition, in the present embodiment one, sound insulation has been built in the both sides of the section between the power station 1 and sound-absorbing wall 2 respectively Band 5.
For above-mentioned power station noise reduction system, when 1 flood discharge of power station, due to the impact direction of water body, make most of make an uproar Sound downstream transmits, i.e., is transmitted to the sound-absorbing wall 2;And the water due to the air jet system 3 between power station 1, sound-absorbing wall 2 High velocity air layer 4 is formed above face;Low frequency noise is set to be transmitted by the high velocity air layer to sound-absorbing wall 2, so that low frequency noise Frequency offset phenomena occurs in high velocity air layer 4, its frequency substantially increases, so as to be easy to be absorbed by the sound-absorbing wall 2.In addition, Because the air pressure in high velocity air layer 4 is significantly lower than the air pressure in other regions, therefore, a part of noise transmitted obliquely is in height The downside of fast airflow layer 4 is easy to reflect, and finally transmits to sound-absorbing wall 2;Therefore, the high velocity air layer 4 is also made an uproar with constraint The effect of sound direction of transfer.
For the embodiment two of this power station noise reduction system, the difference of itself and embodiment one is:As shown in Fig. 2 The sound-absorbing wall 2 is in penetrating before and after the part below the water surface, current is not formed and stopped;Specifically, the sound-absorbing wall 2 includes Knee wall 21 and sound absorbing layer 22;The knee wall 21 is made up of concrete or steel construction grid, front and rear penetrating;The sound absorbing layer 22 By density be less than water light microporous material form, in the width rectangle equal with the knee wall 21, and with the support Wall 21 is constrained by the phase of chute 23, can freely up and down be slided along the knee wall 21;So that sound absorbing layer 22 follows the downstream water surface Fluctuation and slide up and down, the noise above the water surface absorbs all the time, while the current of lower section is not formed and stopped again.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and Within principle, any modification for being made, equivalent substitution, it should be included in the scope of the protection.

Claims (3)

1. a kind of sound-absorbing wall, for power station noise reduction system, power station (1) downstream is implemented in, the sound-absorbing wall (2) is towards water power The one side of (1) of standing is made up of poromerics;The top of the power station (1) is provided with the air jet system towards the sound-absorbing wall (2) (3) when, the air jet system (3) is to the sound-absorbing wall (2) jet, above the water surface between power station (1), sound-absorbing wall (2) Form high velocity air layer (4);The air jet system (3) provides pressure-air by high pressure gas bag, and the high pressure gas bag is filled by air pump Gas.
2. sound-absorbing wall according to claim 1, it is characterised in that:Section between the power station (1) and sound-absorbing wall (2) Both sides built sound insulation band (5) respectively.
3. sound-absorbing wall according to claim 1, it is characterised in that:Before the sound-absorbing wall (2) is in the part below the water surface It is penetrating afterwards, current are not formed and stopped.
CN201710754355.3A 2016-03-28 2016-03-28 Sound-absorbing wall Active CN107489133B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710754355.3A CN107489133B (en) 2016-03-28 2016-03-28 Sound-absorbing wall

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710754355.3A CN107489133B (en) 2016-03-28 2016-03-28 Sound-absorbing wall
CN201610178844.4A CN105804025B (en) 2016-03-28 2016-03-28 Power station noise reduction system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201610178844.4A Division CN105804025B (en) 2016-03-28 2016-03-28 Power station noise reduction system

Publications (2)

Publication Number Publication Date
CN107489133A true CN107489133A (en) 2017-12-19
CN107489133B CN107489133B (en) 2019-07-05

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CN201710754355.3A Active CN107489133B (en) 2016-03-28 2016-03-28 Sound-absorbing wall
CN201610178844.4A Active CN105804025B (en) 2016-03-28 2016-03-28 Power station noise reduction system

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107489133B (en) * 2016-03-28 2019-07-05 无锡兢腾建筑装饰工程有限公司 Sound-absorbing wall
CN108958099A (en) * 2018-05-31 2018-12-07 国网新源控股有限公司回龙分公司 A kind of power station automatic running monitoring system and method
CN108978603B (en) * 2018-05-31 2020-03-10 国网新源控股有限公司回龙分公司 Noise reduction system for hydropower station
CN108951573B (en) * 2018-06-27 2020-08-21 国网河南省电力公司平顶山供电公司 Noise reduction system for small and medium hydropower station
CN108914894B (en) * 2018-06-29 2020-07-14 裴春峰 Noise reduction device for hydropower station
CN110984686B (en) * 2019-11-13 2023-04-07 招商局生态环保科技有限公司 Boundary noise processing system for transformer noise reduction barrier
CN110939037B (en) * 2019-12-10 2021-11-30 聊城市瀚格智能科技有限公司 Biological spanning corridor based on ecological corridor construction

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DE102012107367A1 (en) * 2012-08-10 2014-02-13 AHA Management AG Protection device for protecting person against sound i.e. impact sound, in building, has honeycomb structure attached to sound generator or sound transmitter and comprising foil strips, which are arranged one above other
CN103807561A (en) * 2012-11-14 2014-05-21 中国石油天然气股份有限公司 Customized built-in anti-blockage denoising device for natural gas pipeline
CN204551524U (en) * 2014-12-18 2015-08-12 洛阳双瑞橡塑科技有限公司 A kind of anechoic tank, packaged type absorbs sound partition wall
CN104895024A (en) * 2015-06-12 2015-09-09 国家电网公司 Combined protective sound lock device of pumped storage power station and manufacturing method of sound insulation wall
CN204664000U (en) * 2015-03-21 2015-09-23 重庆东宏鑫科技有限公司 A kind of twayblade denoising draught fan
CN105804025A (en) * 2016-03-28 2016-07-27 钱月珍 Noise reducing system of hydropower station

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JPS5729722A (en) * 1980-07-24 1982-02-17 Mitsubishi Heavy Ind Ltd Preventing method for fall shock noise of water flowing over overflow type sluice gate
JP3356746B2 (en) * 1999-12-15 2002-12-16 征義 伊藤 Flow demagnetization silencer
CN100533033C (en) * 2005-05-10 2009-08-26 金坛市塑料厂 Float-type drop energy-eliminating noise-reducing device
CN202793069U (en) * 2012-07-20 2013-03-13 浙江东发环保工程有限公司 Noise elimination and reduction device for large natural ventilation cooling tower of thermal power plant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012107367A1 (en) * 2012-08-10 2014-02-13 AHA Management AG Protection device for protecting person against sound i.e. impact sound, in building, has honeycomb structure attached to sound generator or sound transmitter and comprising foil strips, which are arranged one above other
CN103807561A (en) * 2012-11-14 2014-05-21 中国石油天然气股份有限公司 Customized built-in anti-blockage denoising device for natural gas pipeline
CN204551524U (en) * 2014-12-18 2015-08-12 洛阳双瑞橡塑科技有限公司 A kind of anechoic tank, packaged type absorbs sound partition wall
CN204664000U (en) * 2015-03-21 2015-09-23 重庆东宏鑫科技有限公司 A kind of twayblade denoising draught fan
CN104895024A (en) * 2015-06-12 2015-09-09 国家电网公司 Combined protective sound lock device of pumped storage power station and manufacturing method of sound insulation wall
CN105804025A (en) * 2016-03-28 2016-07-27 钱月珍 Noise reducing system of hydropower station

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Publication number Publication date
CN105804025B (en) 2017-11-03
CN105804025A (en) 2016-07-27
CN107489133B (en) 2019-07-05

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