CN108331712A - It is a kind of can noise reducing wind electricity blade - Google Patents
It is a kind of can noise reducing wind electricity blade Download PDFInfo
- Publication number
- CN108331712A CN108331712A CN201810161327.5A CN201810161327A CN108331712A CN 108331712 A CN108331712 A CN 108331712A CN 201810161327 A CN201810161327 A CN 201810161327A CN 108331712 A CN108331712 A CN 108331712A
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- Prior art keywords
- blade
- tip
- noise
- control system
- central control
- 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.)
- Pending
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 24
- 230000035939 shock Effects 0.000 claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 7
- 230000001965 increasing effect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/307—Blade tip, e.g. winglets
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention belongs to wind electricity blade technical field, disclose it is a kind of can noise reducing wind electricity blade.The wind electricity blade includes central control system, blade body, tip vane and DD direct driving motors, wherein, threading via hole is provided with inside blade body, central control system is connect by the controlling cable being laid in threading via hole with DD direct driving motors, the stator of DD direct driving motors is fixedly connected with blade body, the rotor of DD direct driving motors and the shaft of tip vane connect, tip vane can rotate around the shaft realizes increasing or reducing for blade tip angle of sweep, to weaken the shock strength of tip vane, to realize the reduction of blade tip noise.The blade can reduce aerodynamic noise, while increase the swept area of wind wheel, stablize the generated energy of unit.
Description
Technical field
The present invention relates to wind electricity blade technical field, more particularly to it is a kind of can noise reducing wind electricity blade.
Background technology
Wind energy increasingly increasing using proportion in world's regenerative resource, becomes various countries' energy industry focus of attention,
As the continuous enhancing of people's environmental consciousness and wind power plant are more and more closer at a distance from residential block, aerodynamic noise problem day
Benefit highlights.The noise level of wind turbine currently, European and American developed countries can all test and assess in wind turbine calls for bid and wind field is run, once noise
More than local environment noise criteria, lose-submission or shutdown will be ordered, therefore aerodynamic noise problem has become limitation wind turbine at present
One of principal element of development.
Fan noise includes mainly in the noise generated in engine room inside parts operation process and blade rotary course
Caused structural vibration noise and aerodynamic noise, wherein blade aerodynamic noise are the main sources of fan noise；Blade aerodynamic is made an uproar
Sound is a kind of since air-flow flows through unsteady flow caused by the generation division of blade interface causes boundary-layer and whirlpool to divide disengaging
Moving noise.Southeast low wind speed area in being turned to the exploitation of China's wind power resources, blade manufacturer is in order to cater to owner's machine
Group using hourage demand, meet the Wind Power Generation demand of low wind speed area, constantly release linear leaf type, the list of Wind turbines
Acc power is also continuously improved, and rotor diameter constantly increases, and blade tip linear velocity is higher and higher, and blade tip shock wave is more and more stronger, causes
Blade tip noise is also increasing；Region of Southeast is populous in China, and the environmental protection ideas and Law consciousness of resident is strong, reduces machine
The noise of group becomes the Key Quality feature to become more and more important.Therefore it provides a kind of wind that can effectively reduce blade aerodynamic noise
Electric blade, is of great significance.
Invention content
In order to solve the big technical problem of blade aerodynamic noise in the prior art, the present invention provides one kind can noise reducing
Wind electricity blade.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：
It is a kind of can noise reducing wind electricity blade, including blade body, tip vane and DD direct driving motors and center control system
System, wherein be provided with threading via hole inside blade body, central control system by the controlling cable that is laid in threading via hole with
DD direct driving motors connect, and the stator of DD direct driving motors is fixedly connected with blade body, the rotor and tip vane of DD direct driving motors
Shaft connection, central control system by DD direct driving motors control tip vane rotate around the shaft, to realize blade tip sweepback
Angle increases or reduces；When wind speed round increases, tip vane angle of sweep increases to weaken the shock strength of blade tip, realizes blade tip
The reduction of noise, when wind speed round reduces, tip vane angle of sweep reduces, and swept area of rotor increases, and stablizes unit generation amount.
Existing blade tip noise reduction technology is non-adjustable for blade tip angle of sweep degree under different gustiness generally using fixed aerofoil profile
Whole (fixed aerofoil profile angle of sweep degree be zero), when wind speed increases sharply, noise also increases sharply therewith, can not real-time noise-reducing, the present invention is for existing
The deficiency for having technology, provide it is a kind of can noise reducing wind electricity blade, which includes fixed blade body and adjustable inclination angle
Blade winglet, central control system receives wind velocity signal and noise signal, tip vane is obtained by calculation and needs to rotate
Angle, control DD direct driving motors drive tip vane deflection angle, the sweepback of blade tip is realized, to which the shock wave for weakening blade tip is strong
Degree, realize reduces blade tip noise in real time.
Central control system can be installed in place according to needs of production, preferably, can control center
System processed is mounted in the wheel hub being connected with blade.
The direction that opens up of threading via hole does not limit specifically, preferably, along length of blade direction inside blade body
Axis opens up threading via hole.
Wind electricity blade provided by the invention further includes anemobiagraph or noise level monitor, specifically uses which kind of signal detection apparatus
It is standby, it can be selected according to actual needs, if using anemobiagraph, anemobiagraph passes through anemobiagraph signal with central control system
Cable connection measures wind velocity signal by anemobiagraph and sends wind velocity signal to central control system.If examined using noise
Instrument is surveyed, noise level monitor wirelessly or non-wirelessly connect with central control system, noise signal is driven in by noise level monitor
Control system is entreated, the installation site of noise level monitor is not specifically limited, if it can detect noise signal, such as can be with
On sound field indicators boundary, preferably to detect noise signal.
If wind speed reduces, the linear velocity of blade tip is low, and aerodynamic noise is generally smaller, the leaf provided through the invention
Piece can adjust tip vane sweepback angle in real time, its angle of sweep degree is made to become smaller, blade equivalent length, swept area of rotor
Increase, stablizes unit generation amount；When wind speed increases sharply, tip vane angle of sweep becomes larger, and reduces blade tip shock wave, inhibits flow-disturbing and whirlpool
The generation of rotation improves blade aerodynamic performance, and then reduces aerodynamic noise.
When extraneous wind speed is relatively low, blade rotational speed reduces, and blade tip linear velocity reduces, and blade tip aerodynamic noise weakens at this time, makes an uproar
The noise signal value detected or wind velocity signal value are sent to central control system, center control system by sound detection instrument or anemobiagraph
System compares the numerical value received with limits value, and calculate makes wind wheel have maximum again while noise figure or air speed value do not transfinite
Swept area blade tip sweepback angle, send a signal to tip vane DD direct driving motors, control blade tip action, for ensureing
The generated energy of unit；Therefore, blade provided by the invention can adjust tip vane sweepback angle in real time, its angle of sweep degree is made to become
Small, blade equivalent length, swept area of rotor increases, and stablizes unit generation amount.
With increasing for extraneous wind speed, wind speed is increasing, and the rotating speed of blade also increases, and the linear velocity of blade tip is also increasingly
The aerodynamic noise of height, generation is also increasing, and anemobiagraph or noise level monitor detect the wind speed or machine of oneself present position in real time
Group noise signal, and it is transferred to unit central control system, central control system once finds noise figure or air speed value is more than rule
Definite value calculates blade tip sweepback angle then according to the amplitude for being more than specified value, sends corresponding signal and directly drives electricity to tip vane DD
Machine makes its rotation, and then drives tip vane deflection, realizes the sweepback of blade tip, to weaken blade tip shock strength, realizes real-time
Reduce blade tip aerodynamic noise.
Compared with existing fixed airfoil tip noise reduction technology, it is provided by the invention can noise reducing wind electricity blade, blade tip is small
The wing can rotate around the shaft obtains sizable angle of sweep, reduces blade tip shock wave by the size variation at angle of sweep, inhibits to disturb
Stream and the generation being vortexed, improve blade aerodynamic performance, and then reduce aerodynamic noise in real time；By anemobiagraph, noise level monitor, in
Centre control system and DD directly drive motor, and blade tip angle of sweep degree under different gustiness can be adjusted accurately at any time, make to make an uproar
Sound will not increase sharply with wind speed and be increased, being capable of real-time noise-reducing.
Description of the drawings
Fig. 1 be it is provided by the present invention can noise reducing wind electricity blade without sweep angle when structural schematic diagram；
Fig. 2 be it is provided by the present invention can the structural schematic diagram of the wind electricity blade of noise reducing when having a sweep angle.
Specific implementation mode
The invention discloses it is a kind of can noise reducing wind electricity blade, those skilled in the art can use for reference present disclosure, fit
It is realized when improving parts.In particular, it should be pointed out that all similar substitutions and modifications are for a person skilled in the art
It is it will be apparent that they are considered as including in the present invention.The method of the present invention and application are by preferably implementing
Example is described, related personnel obviously can not depart from the content of present invention, in spirit and scope to method described herein and
Using being modified or suitably changing and combine, to realize and apply the technology of the present invention.
The present invention provides it is a kind of can noise reducing wind electricity blade comprising central control system 7, blade body 3, blade tip
Winglet 1, DD direct driving motors 2, anemobiagraph 4 or noise level monitor, wherein open up and wear along length of blade direction inside blade body 3
Line three-way hole 8, central control system 7 are connect by the controlling cable 5 being laid in threading via hole 8 with DD direct driving motors 2, and DD directly drives
The stator of motor 2 is fixedly connected with blade body 3, and the rotor of DD direct driving motors 2 is connect with the shaft of tip vane 1, center control
System 7 processed controls tip vane 1 by DD direct driving motors 2 and rotates around the shaft, to realize the increase of blade tip angle of sweep α or subtract
It is small；To weaken the shock strength of tip vane, to realize the reduction of blade tip noise；Central control system 7 may be mounted at
In the connected wheel hub of blade, anemobiagraph 4 is connect with central control system 7 by anemobiagraph signal cable 6, is surveyed by anemobiagraph 4
Amount wind velocity signal simultaneously sends wind velocity signal to central control system 7, noise level monitor wirelessly or non-wirelessly with central control system 7
Noise signal, is driven to central control system 7 by connection by noise level monitor.When wind speed round increases, tip vane sweepback
Angle α increases to weaken the shock strength of blade tip, realizes the reduction of blade tip noise, when wind speed round reduces, tip vane angle of sweep α
Reduce, swept area of rotor increases, and stablizes unit generation amount.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. it is a kind of can noise reducing wind electricity blade, including blade body, tip vane and DD direct driving motors and central control system,
Wherein, it is provided with threading via hole inside blade body, central control system passes through the controlling cable and DD that are laid in threading via hole
Direct driving motor connects, and the stator of DD direct driving motors is fixedly connected with blade body, the rotors of DD direct driving motors and tip vane
Shaft connects, and central control system controls tip vane by DD direct driving motors and rotates around the shaft, to realize blade tip angle of sweep
Increase or reduce；When wind speed round increases, tip vane angle of sweep increases to weaken the shock strength of blade tip, realizes that blade tip is made an uproar
The reduction of sound, when wind speed round reduces, tip vane angle of sweep reduces, and swept area of rotor increases, and stablizes unit generation amount.
2. as described in claim 1 can noise reducing wind electricity blade, it is characterised in that：Central control system is mounted on and blade
In connected wheel hub.
3. as described in claim 1 can noise reducing wind electricity blade, it is characterised in that：Along length of blade side inside blade body
To opening up threading via hole.
4. as described in right wants 1 can noise reducing wind electricity blade, it is characterised in that：Wind electricity blade further includes anemobiagraph, wind speed
Instrument is connect with central control system by anemobiagraph signal cable, is measured wind velocity signal by anemobiagraph and is transmitted wind velocity signal
To central control system.
5. as described in right wants 1 can noise reducing wind electricity blade, it is characterised in that：Wind electricity blade further includes noise level monitor,
Noise level monitor is wirelessly or non-wirelessly connect with central control system, is driven noise signal by noise level monitor and is controlled to center
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161327.5A CN108331712A (en) | 2018-02-27 | 2018-02-27 | It is a kind of can noise reducing wind electricity blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161327.5A CN108331712A (en) | 2018-02-27 | 2018-02-27 | It is a kind of can noise reducing wind electricity blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331712A true CN108331712A (en) | 2018-07-27 |
Family
ID=62929962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810161327.5A Pending CN108331712A (en) | 2018-02-27 | 2018-02-27 | It is a kind of can noise reducing wind electricity blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108331712A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307117A (en) * | 2019-06-14 | 2019-10-08 | 沈阳航空航天大学 | A kind of adjustable sweepforward in angle of sweep and sweepback combined type Blades For Horizontal Axis Wind |
| WO2020025093A1 (en) * | 2018-08-01 | 2020-02-06 | Vestas Wind Systems A/S | Noise reduction in a wind turbine with hinged blades |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022268A (en) * | 2009-09-15 | 2011-04-20 | 大银微系统股份有限公司 | Windshield speed-reducing method and device of wind power generator |
| EP2378115A2 (en) * | 2010-04-15 | 2011-10-19 | General Electric Company | Configurable winglet for wind turbine blades |
| CN102465829A (en) * | 2010-11-16 | 2012-05-23 | 通用电气公司 | Winglet for wind turbine rotor blade |
| CN202348555U (en) * | 2011-12-13 | 2012-07-25 | 内蒙古航天亿久科技发展有限责任公司 | Horizontal axis wind generating set with variable wind wheel diameter |
| CN102953924A (en) * | 2011-08-09 | 2013-03-06 | 通用电气公司 | Pitchable winglet for a wind turbine rotor blade |
| CN102996367A (en) * | 2012-11-29 | 2013-03-27 | 南京航空航天大学 | Movable winglet device for wind turbine blade |
| CN103291561A (en) * | 2013-05-06 | 2013-09-11 | 南京航空航天大学 | Wind turbine blade with split winglet at apex |
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
| CN207960838U (en) * | 2018-02-27 | 2018-10-12 | 青岛华创风能有限公司 | It is a kind of can noise reducing wind electricity blade |
-
2018
- 2018-02-27 CN CN201810161327.5A patent/CN108331712A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022268A (en) * | 2009-09-15 | 2011-04-20 | 大银微系统股份有限公司 | Windshield speed-reducing method and device of wind power generator |
| EP2378115A2 (en) * | 2010-04-15 | 2011-10-19 | General Electric Company | Configurable winglet for wind turbine blades |
| CN102465829A (en) * | 2010-11-16 | 2012-05-23 | 通用电气公司 | Winglet for wind turbine rotor blade |
| CN102953924A (en) * | 2011-08-09 | 2013-03-06 | 通用电气公司 | Pitchable winglet for a wind turbine rotor blade |
| CN202348555U (en) * | 2011-12-13 | 2012-07-25 | 内蒙古航天亿久科技发展有限责任公司 | Horizontal axis wind generating set with variable wind wheel diameter |
| CN102996367A (en) * | 2012-11-29 | 2013-03-27 | 南京航空航天大学 | Movable winglet device for wind turbine blade |
| CN103291561A (en) * | 2013-05-06 | 2013-09-11 | 南京航空航天大学 | Wind turbine blade with split winglet at apex |
| CN104234929A (en) * | 2014-07-24 | 2014-12-24 | 南京航空航天大学 | Device for controlling loading and deformation of wind turbine blade |
| CN207960838U (en) * | 2018-02-27 | 2018-10-12 | 青岛华创风能有限公司 | It is a kind of can noise reducing wind electricity blade |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020025093A1 (en) * | 2018-08-01 | 2020-02-06 | Vestas Wind Systems A/S | Noise reduction in a wind turbine with hinged blades |
| US20210324831A1 (en) * | 2018-08-01 | 2021-10-21 | Vestas Wind Systems A/S | Noise reduction in a wind turbine with hinged blades |
| CN110307117A (en) * | 2019-06-14 | 2019-10-08 | 沈阳航空航天大学 | A kind of adjustable sweepforward in angle of sweep and sweepback combined type Blades For Horizontal Axis Wind |
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