CN207960833U - A kind of low pneumatic noise Wind turbines - Google Patents
A kind of low pneumatic noise Wind turbines Download PDFInfo
- Publication number
- CN207960833U CN207960833U CN201820273864.4U CN201820273864U CN207960833U CN 207960833 U CN207960833 U CN 207960833U CN 201820273864 U CN201820273864 U CN 201820273864U CN 207960833 U CN207960833 U CN 207960833U
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- noise
- blade
- wind
- control system
- tip
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- 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 utility model discloses a kind of low pneumatic noise Wind turbines.The Wind turbines include wind wheel, main shaft and generator, and wind wheel includes several blades and wheel hub, and blade root is fixedly mounted on wheel hub, and one end of main shaft is connect with wheel hub, and the other end is connect by transmission system with generator, it is characterised in that：Blade includes blade body, tip vane, DD direct driving motors and central control system, 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, and tip vane can rotate around the shaft realizes increasing or reducing for blade tip angle of sweep.The wind-powered electricity generation group can improve blade aerodynamic performance, reduce aerodynamic noise in real time, and blade tip angle of sweep degree under different gustiness can be adjusted accurately at any time, being capable of real-time noise-reducing.
Description
Technical field
The utility model is related to low pneumatic noise Wind turbines.
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.
Wind turbines noise includes mainly that the noise generated in engine room inside parts operation process and blade rotate through
Caused structural vibration noise and aerodynamic noise in journey, wherein blade aerodynamic noise are the main sources of fan noise；Blade gas
Moving noise be it is a kind of due to air-flow flow through blade interface generate division cause boundary-layer and whirlpool divide be detached from caused by it is non-steady
Constant current 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 industry
Host groups using hourage demand, meet the Wind Power Generation demand of low wind speed area, constantly release linear leaf type, Wind turbines
Single-machine capacity be also continuously improved, rotor diameter constantly increases, and blade tip linear velocity is higher and higher, and blade tip shock wave is more and more stronger,
Cause blade tip noise also increasing；Region of Southeast is populous in China, and the environmental protection ideas and Law consciousness of resident is strong, drop
The noise of low unit becomes the Key Quality feature to become more and more important.Therefore it provides one kind can effectively reduce blade aerodynamic noise
Wind turbines, be of great significance.
Utility model content
In order to solve the problems, such as that Wind turbines aerodynamic noise in the prior art is big, the utility model provides a kind of low gas
Moving noise Wind turbines.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：
A kind of low pneumatic noise Wind turbines, including wind wheel, main shaft and generator, wind wheel include several blades and wheel hub,
Blade root is fixedly mounted on wheel hub, and one end of main shaft is connect with wheel hub, and the other end is connect by transmission system with generator,
It is characterized in that：Blade includes blade body, tip vane, DD direct driving motors and central control system, is opened inside blade body
There are threading via hole, central control system to be connect with DD direct driving motors by the controlling cable being laid in threading via hole, DD directly drives
The stator of motor is fixedly connected with blade body, and the rotor of DD direct driving motors and the shaft of tip vane connect, center control system
System controls tip vane by DD direct driving motors and rotates around the shaft, to realize increasing or reducing for blade tip angle of sweep；Wind wheel turns
When speed increases, tip vane angle of sweep increases to weaken the shock strength of blade tip, realizes the reduction of blade tip noise, wind speed round drop
When low, 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 utility model needle
To the deficiencies in the prior art, a kind of low pneumatic noise Wind turbines are provided, the blade in the Wind turbines includes fixed leaf
The blade winglet of piece main body and adjustable inclination angle, central control system receive wind velocity signal and noise signal, are obtained by calculation
Tip vane needs the angle rotated, control DD direct driving motors to drive tip vane deflection angle, realize the sweepback of blade tip, to
Weaken the shock strength of blade tip, realize reduces blade tip noise in real time.
Central control system can specifically carry out position installation, center control provided by the utility model according to actual needs
System is mounted in the cavity of wheel hub.
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 turbines provided by the utility model further include the anemobiagraph or detected noise signal for detecting wind velocity signal
Noise level monitor, specifically use which kind of signal supervisory instrument, can be configured according to actual conditions or demand, if using
Anemobiagraph, then anemobiagraph connect by anemobiagraph signal cable with central control system, by anemobiagraph measure wind velocity signal simultaneously
Send wind velocity signal to central control system；If using noise level monitor, noise level monitor wirelessly or non-wirelessly with center
Control system connects, and noise signal is driven to central control system by noise level monitor, preferably, noise level monitor is
Noise level monitor array, installation site are not specifically limited, as long as noise signal can be detected, preferably, noise
Monitor array is arranged on sound field indicators boundary, preferably to detect noise signal.
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, wind
The wind velocity signal value detected or noise signal value are sent to central control system, center control system by fast instrument or noise level monitor
System compares the air speed value received or noise figure with limits value, and calculate makes wind wheel have most again while noise figure does not transfinite
The blade tip sweepback angle of big swept area sends a signal to tip vane DD direct driving motors, control blade tip action, for protecting
Demonstrate,prove the generated energy of unit；Therefore, blade provided by the utility model can adjust tip vane sweepback angle in real time, make its angle of sweep
Degree becomes smaller, blade equivalent length, and 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
Height, the wind speed or aerodynamic noise of generation are also increasing, and wind speed detector or noise level monitor detect oneself present position in real time
Unit wind speed or noise signal, give unit central control system, central control system by wired or wireless way for transmitting
Once it was found that noise figure is more than specified value, then according to the amplitude for being more than specified value, blade tip sweepback angle is calculated, sends corresponding letter
Number make its rotation to tip vane DD direct driving motors, and then drive tip vane deflection, the sweepback of blade tip is realized, to weaken leaf
Sharp shock strength, realize reduces blade tip aerodynamic noise in real time.
Compared with existing fixed airfoil tip noise reduction technology, low pneumatic noise Wind turbines provided by the utility model,
The tip vane of blade can rotate around the shaft obtains sizable angle of sweep, reduces blade tip by the size variation at angle of sweep
Shock wave inhibits the generation of flow-disturbing and vortex, improves blade aerodynamic performance, and then reduce aerodynamic noise in real time；By anemobiagraph, make an uproar
Sound detection instrument, central control system and DD directly drive motor, can be accurate at any time for blade tip angle of sweep degree under different gustiness
Really adjustment makes noise not increase sharply and increase with wind speed, being capable of real-time noise-reducing.
Description of the drawings
Fig. 1 is the structural schematic diagram of low pneumatic noise Wind turbines provided by the utility model；
Fig. 2 is the structural schematic diagram of the blade of Wind turbines provided by the utility model；
Fig. 3 is the general arrangement schematic of wind-power electricity generation provided by the utility model.
Specific implementation mode
The utility model discloses a kind of low pneumatic noise Wind turbines, those skilled in the art can use for reference in this paper
Hold, is suitably modified parts to realize.In particular, it should be pointed out that all similar substitutions and modifications are to those skilled in the art
For be it will be apparent that they are considered as being included in the utility model.The method of the utility model and application are
Be described by preferred embodiment, related personnel obviously can not depart from the utility model content, in spirit and scope it is right
Method described herein and application are modified or suitably change and combine, to realize and apply the utility model technology.
As shown in Figs. 1-2, the utility model provides a kind of wind power generating set, including wind wheel, main shaft and generator, wind
Wheel includes several blades 6 and wheel hub 3, and 6 blade root of blade is fixedly mounted on wheel hub 6, and one end of main shaft is connect with wheel hub, the other end
It is connect with generator by transmission system, each blade 6 includes blade body 3, tip vane 1, DD direct driving motors 2 and center control
System 7 processed, central control system 7 are mounted in the cavity of wheel hub 3, and threading is provided with along length of blade direction inside blade body 3
Through-hole 8, central control system 7 are connect by the controlling cable 4 being laid in threading via hole 8 with DD direct driving motors 2, and DD directly drives electricity
The stator of machine 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 controls tip vane 1 by DD direct driving motors 2 and rotates around the shaft, to realize increasing or reducing for blade tip angle of sweep α；
When wind speed round increases, tip vane angle of sweep α increases to weaken the shock strength of blade tip, realizes the reduction of blade tip noise, wind
When wheel speed reduces, tip vane angle of sweep α reduces, and swept area of rotor increases, and stablizes unit generation amount.
As shown in Figure 1, Figure 3, in a preferred embodiment, Wind turbines further include anemobiagraph 5 or noise measuring
Instrument 9, anemobiagraph 5 are connect with central control system 7 by anemobiagraph signal cable, measure wind velocity signal by anemobiagraph and by wind
Fast signal sends central control system to.Noise level monitor 9 is wirelessly or non-wirelessly connect with central control system 7, is examined by noise
It is 7 to survey instrument and noise signal is driven to center control, and noise level indicator 9 is noise level monitor array, and noise level indicator array is set
It sets on sound field indicators boundary.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of low pneumatic noise Wind turbines, including wind wheel, main shaft and generator, wind wheel includes several blades and wheel hub, leaf
Piece blade root is fixedly mounted on wheel hub, and one end of main shaft is connect with wheel hub, and the other end is connect by transmission system with generator,
It is characterized in that：Blade includes blade body, tip vane, DD direct driving motors and central control system, is provided with inside blade body
Threading via hole, central control system are connect by the controlling cable being laid in threading via hole with DD direct driving motors, and DD directly drives electricity
The stator of machine is fixedly connected with blade body, and the rotor of DD direct driving motors and the shaft of tip vane connect, central control system
Tip vane is controlled by DD direct driving motors to rotate around the shaft, to realize increasing or reducing for blade tip angle of sweep；Wind speed round
When increasing, tip vane angle of sweep increases to weaken the shock strength of blade tip, realizes that the reduction of blade tip noise, wind speed round reduce
When, tip vane angle of sweep reduces, and swept area of rotor increases, and stablizes unit generation amount.
2. low pneumatic noise Wind turbines as described in claim 1, it is characterised in that：Central control system is mounted on wheel hub
In cavity.
3. low pneumatic noise Wind turbines as described in claim 1, it is characterised in that：Along length of blade side inside blade body
To opening up threading via hole.
4. low pneumatic noise Wind turbines as described in claim 1, it is characterised in that：Further include anemobiagraph, anemobiagraph is in
Centre control system is connected by anemobiagraph signal cable, is measured wind velocity signal by anemobiagraph and is sent wind velocity signal to center
Control system.
5. low pneumatic noise Wind turbines as described in claim 1, it is characterised in that：Further include noise level monitor, noise inspection
It surveys instrument wirelessly or non-wirelessly to connect with central control system, noise signal is driven to central control system by noise level monitor.
6. low pneumatic noise Wind turbines as claimed in claim 5, it is characterised in that：Noise level indicator is noise level monitor battle array
Row, noise level indicator array are arranged on sound field indicators boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820273864.4U CN207960833U (en) | 2018-02-27 | 2018-02-27 | A kind of low pneumatic noise Wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820273864.4U CN207960833U (en) | 2018-02-27 | 2018-02-27 | A kind of low pneumatic noise Wind turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207960833U true CN207960833U (en) | 2018-10-12 |
Family
ID=63740079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820273864.4U Expired - Fee Related CN207960833U (en) | 2018-02-27 | 2018-02-27 | A kind of low pneumatic noise Wind turbines |
Country Status (1)
| Country | Link |
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| CN (1) | CN207960833U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266313A (en) * | 2018-02-27 | 2018-07-10 | 青岛华创风能有限公司 | A kind of low pneumatic noise Wind turbines |
| 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 |
-
2018
- 2018-02-27 CN CN201820273864.4U patent/CN207960833U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266313A (en) * | 2018-02-27 | 2018-07-10 | 青岛华创风能有限公司 | A kind of low pneumatic noise Wind turbines |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20190227 |