CN109386425A - The pneumatic equipment bladess and wind energy conversion system of a kind of linear micro- cavernous structure of blade inlet edge - Google Patents
The pneumatic equipment bladess and wind energy conversion system of a kind of linear micro- cavernous structure of blade inlet edge Download PDFInfo
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- CN109386425A CN109386425A CN201710709546.8A CN201710709546A CN109386425A CN 109386425 A CN109386425 A CN 109386425A CN 201710709546 A CN201710709546 A CN 201710709546A CN 109386425 A CN109386425 A CN 109386425A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 17
- 238000012360 testing method Methods 0.000 description 11
- 238000007634 remodeling Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
-
- 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
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- 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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention relates to wind power generation fields, more particularly, to a kind of pneumatic equipment bladess of the linear micro- cavernous structure of blade inlet edge, including blade body, the linear micropore shape of the leading edge of blade body, a kind of wind energy conversion system is also provided, blade, pod, generator, controller, battery, inverter and current loading including the linear micropore shape of blade inlet edge.The present invention provides a kind of pneumatic equipment bladess of the linear micro- cavernous structure of blade inlet edge, in Blades For Horizontal Axis Wind leading edge horizontal bore, make the linear micropore shape of blade inlet edge, subtle transformation is carried out to blade inlet edge structure under the premise of not increasing cost, simple process, expense is low, is convenient for integrated design, can large-scale production, simultaneously in the case where guaranteeing that output power is basically unchanged, Axis Wind Turbine With A Tip Vane noise is reduced, the degree of fatigue of blade is reduced, extends wind energy conversion system service life.
Description
Technical field
The present invention relates to a kind of wind energy conversion system leaves of the linear micro- cavernous structure of wind power generation field more particularly to blade inlet edge
Piece and wind energy conversion system.
Background technique
In order to improve the power coefficient of wind energy conversion system and reduce wind energy conversion system noise, the researcher of countries in the world is proposed respectively
The method of kind various kinds, such as using the blade of aeroperformance optimization, the design efficient aerofoil profile of noise reduction, in wind wheel periphery increase diffuser
(Diffuser) wing flap is added in rear wing, in blade tip addition winglet (Tip Vane) etc..Above method is all by blade
Addition pneumatic element changes wind energy conversion system aerodynamic characteristic with new blade is designed, and to reduce wind energy conversion system aerodynamic noise, but adds
Pneumatic element and the new blade of design can all change wind machine structure power mechanical characteristic, problem made to become complicated, make influence factor
Increase, it is difficult to increase research.
According to wind energy conversion system Aerodynamics, horizontal-shaft wind turbine power coefficient is that Betz limit is about 0.593,
The power coefficient of wind energy conversion system it can reach this limit far away at present.Because the aerofoil profile of the pattern of wind energy conversion system, structure, blade,
It is multifactor, all directly affect the generation of power coefficient and wind energy conversion system noise.In order to improve the power coefficient of wind energy conversion system
With reduction wind energy conversion system noise, the researcher of countries in the world proposes various research methods, is such as optimized using aeroperformance
Blade, design the efficient aerofoil profile of noise reduction, wind wheel periphery increase diffuser (Diffuser) rear wing add wing flap, in blade tip
Add winglet (Tip Vane) etc..
The suitable winglet of structure is added in horizontal-shaft wind turbine blade tip, the pressure distribution on wind wheel surface can be effectively improved,
The power coefficient for increasing wind energy conversion system, improves the power output of wind energy conversion system, enhances its Structure dynamic characteristics, reduces wind energy conversion system and makes an uproar
Sound.
Be the shortcomings that horizontal-shaft wind turbine blade tip adds method of the winglet to noise reduction: manufacture winglet is at high cost, technique
More complex, winglet is difficult to install, increases mounting cost, winglet and blade are unable to integrated design, are not easy to large-scale production.
The present invention changes leading edge structure in Blades For Horizontal Axis Wind leading edge aperture, linear poroid, is not increasing leaf
Blade inlet edge is designed under the premise of piece cost, reduces wind energy conversion system noise, reduces the degree of fatigue of blade, extends wind energy conversion system
Service life is exploration accumulation experiment and the design experiences of wind wheel noise reduction approach.
Summary of the invention
The present invention changes leading edge structure in Blades For Horizontal Axis Wind leading edge aperture, and linear micropore shape is not increasing
Under the premise of cost, design is improved to blade inlet edge structure, Axis Wind Turbine With A Tip Vane noise is reduced, reduces the tired journey of blade
Degree, extends the service life of wind energy conversion system.
A kind of pneumatic equipment bladess of the linear pore type structure of blade inlet edge provided by the invention, including blade body, leaf
The leading edge position of piece ontology has linear micropore shape.
The present invention also provides a kind of wind energy conversion system, blades, pod including the linear pore type of blade inlet edge, power generation
Machine, controller, battery, inverter and current loading；Pod is located at the front end of blade, and generator is located at the rear portion of blade,
Generator, battery are electrically connected with the controller, and battery, current loading are connect with inverter.
The pneumatic equipment bladess of the linear pore type structure of a kind of blade inlet edge provided by the invention, in horizontal-shaft wind turbine leaf
Piece leading edge aperture, changes leading edge structure, and linear pass structure is presented, and carries out under the premise of not increasing cost to tip structure
Curve guide impeller, simple process, expense is low, sets juice convenient for integration, is produced on a large scale.Meanwhile guaranteeing that output power is basic
In the case where constant, Axis Wind Turbine With A Tip Vane noise is reduced, reduces the degree of fatigue of blade, extends wind energy conversion system service life.
Detailed description of the invention
Illustrate the specific embodiment of the invention or technical solution in the prior art in order to clearer, it below will be to specific
Embodiment or attached drawing needed to be used in the description of the prior art do simple introduction, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the signal at the pneumatic equipment bladess leading edge position of the linear pore type structure of leading edge provided in an embodiment of the present invention
Figure；
Fig. 2 is that wind energy conversion system near-wake region provided in an embodiment of the present invention domain rotates test interface measuring point cloth when angle is 90 °
Set schematic diagram；
Fig. 3 is the wind speed of wind energy conversion system and the relationship change curve graph of power before and after blade inlet edge of the present invention is retrofited:
Fig. 4 is the wind speed and power coefficient change curve of wind energy conversion system before and after blade inlet edge of the present invention is retrofited:
Wind energy conversion system enters=7.0, x=30cm in tip-speed ratio before and after Fig. 5 retrofits for blade inlet edge of the present invention, and test rotation angle is
90 ° of 7 measuring points rotate fundamental frequency noise variation diagram:
Wind energy conversion system enters=7.0, X=30cm in tip-speed ratio before and after Fig. 6 retrofits for blade inlet edge of the present invention, and test rotation angle is
The blade tip vortex shedding frequency noise variation diagram of 90 ° of 7 measuring points.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that the embodiment retouched
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless there are specific regulation and limit, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, can also can dismantling connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected: can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, a kind of pneumatic equipment bladess of the linear pore type structure of blade inlet edge provided by the invention, including leaf
The leading edge position of piece ontology, blade body has linear micropore, and the geometric parameter of the linear pore type mechanism of leading edge includes micropore
Distance S between diameter D, microcell length L, Kong Yukong.
The present invention also provides a kind of wind energy conversion system, blade, pod including the linear pore type of leading edge, generator, controls
Device, battery, inverter and current loading processed；Pod is located at the front end of blade, and generator is located at the rear portion of blade, power generation
Machine, battery are electrically connected with the controller, and the equal of battery, current loading is connected with inverter.
In order to which accurate pilot blade leading edge comprehensively is without the wind energy conversion system of linear micropore and the linear pore type of blade inlet edge band
Noise properties, using acoustic array method adjust the distance the wind wheel section Plane of rotation 30cm rotation angle be 90 ° when p-wire on 7 survey
Point is tested.Its test zone 3-D walls and floor is defined as, it is vertical with wind wheel rotary shaft and pass through pneumatic equipment bladess Ye Jianyi
The plane definition of type leading edge point is wind wheel Plane of rotation, and wind wheel rotary shaft and the intersection point of the plane rotate the towel heart for wind wheel, along wind
Wheel rotation center moves horizontally 30cm to phoenix wheel Plane of rotation radial direction outward and is set as coordinate origin 0.It is every on p-wire
A measuring point interval 10cm, shown in specific test arrangement schematic diagram 2.
In the present embodiment, designing two kinds of linear microcellular structures of leading edge altogether is that the linear microcellular structure parameter of leading edge is respectively
The diameter D=0.25cm in hole, the linear micropore entire length of leading edge are L=30cm, the wind of horizontal distance S=1cm between Kong Yukong
Power machine, the linear microcellular structure parameter of leading edge are the diameter D=0.50cm in hole, and the linear micropore entire length of leading edge is L=30cm, hole
The wind energy conversion system of horizontal distance S=1cm between hole, compares with wind energy conversion system of not retrofiting.It is linearly micro- by test discovery leading edge
Pore structure parameter is that the diameter D=0.25cm microcellular structure parameter more linear than leading edge in hole is the pneumatic property of diameter D=0.50cm in hole
It can get well, so the diameter D=0.25cm that the linear microcellular structure parameter of leading edge is hole is illustrated as test case, it is specific to survey
Method for testing is to utilize load constant, changes the output power and power coefficient Cp of the test method(s) measurement wind energy conversion system of arrives stream wind speed
Variation, result visible Fig. 3 and Fig. 4.By Fig. 3 and can be seen that in measured wind speed range between 3-11m/s, leading edge
The output power of linear pore type wind energy conversion system and the output power for wind energy conversion system of not retrofiting are not much different；Equally as seen from Figure 4,
In the low wind speed range of 3-7m/s, the linear pore type wind energy conversion system power coefficient of leading edge is lower than end remodeling wind energy conversion system, in 7-11m/s
Within the scope of middle high wind speed, the linear pore type wind energy conversion system power coefficient of leading edge is differed with end remodeling wind energy conversion system power coefficient
Less.It is 4m/s that the wind energy conversion system power coefficient maximum value 0.404 of the linear microcellular structure of leading edge, which appears in arrives stream wind speed, is not changed
It is 4m/s that the wind energy conversion system power coefficient maximum value 0.461 of type structure, which appears in arrives stream wind speed, it can be seen that, leading edge is linearly micro-
Pass structure is affected to the aeroperformance of wind energy conversion system in low wind speed section, influences in high speed section smaller.Rated wind speed 12m/s
Corresponding power is not retrofited respectively wind energy conversion system 274W, the linear micropore wind energy conversion system 279W of leading edge.By calculating, the linear micropore of leading edge
Wind energy conversion system power is made to improve 1.8% after wind energy conversion system remodeling.It follows that the linear pore type structure wind-force of leading edge after remodeling
Machine is influenced smaller and is promoted to wind energy conversion system power in high wind speed section on wind energy conversion system wind energy utilization.
In the present embodiment, by retrofiting under anterior-posterior horizontal axis wind mill wind wheel blade tip to the lower leading edge in specified tip-speed ratio λ=7
The analysis of 3D region noise pattern is swum, the spectrogram of Axis Wind Turbine With A Tip Vane noise region is mainly the rotation base by wind wheel blade
The frequency of blade tip vortex shedding frequency, the rotation generation of wind-tunnel power fan that frequency and harmonic wave, blade rotation generate is constituted.We use
The linear pore type structural parameters of leading edge be bore dia D=0.25, the linear micropore entire length of leading edge be L=30cm, Kong Yukong it
Between distance S=1cm.Then test after not retrofiting and retrofiting that structure wind energy conversion system is in arrives stream wind speed 8m/s, tip-speed ratio λ=7, x=
Fig. 5, blade tip are shown in rotational noise variation corresponding to the rotation fundamental frequency 41.135Hz for 7 measuring points that 30cm test rotation angle is 90 °
Fig. 6 is shown in the variation of blade tip noise corresponding to vortex shedding frequency 320Hz.
As seen from Figure 5, the influence that the linear pore type structure of leading edge generates the rotational noise of wind wheel, make to rotate fundamental frequency and its
Spectrogram peaks corresponding to the frequency of harmonic relationships (namely rotational noise) have what is be decreased obviously to become in test zone
Gesture rotates fundamental frequency noise changing value fluctuation range -2.32% to 0.35%.Averagely reduce 1.59%.As seen from Figure 6,
Blade wind energy conversion system of not retrofiting in measuring point 6 has tip vortex to pass through, so that the sound pressure level of 6 tip vortex noise of measuring point increases；Leading edge is linear
Pore type wind energy conversion system has tip vortex to pass through in measurement 6 so that the sound pressure level of 6 tip vortex noise of measuring point increases, after remodeling with modification
Preceding tip vortex noise variation range averagely reduces 0.9% -3.18% to 1.4%.It follows that blade inlet edge is retrofited
The generation of tip vortex noise and rotational noise is reduced afterwards.
By the remodeling of leading edge structure, a kind of pneumatic equipment bladess and wind of the linear pore type structure of leading edge provided by the invention
Power machine reduces the noise of wind energy conversion system in the case where guaranteeing that output power is basically unchanged, and reduces the degree of fatigue of blade, extends
Wind energy conversion system service life.
Finally, it should be noted that the above various embodiments is only used to illustrate the technical scheme of the present invention, rather than its limitations；To the greatest extent
Invention is explained in detail referring to aforementioned symbol embodiment for pipe, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (2)
1. a kind of pneumatic equipment bladess of the linear micro- cavernous structure of blade inlet edge, which is characterized in that including blade body, the leaf
The linear micropore shape of the blade inlet edge of piece ontology；
The linear microcellular structure parameter of leading edge is the diameter D=0.25cm in hole, and the linear micropore entire length of leading edge is L=
30cm is horizontal distance S=1cm between 50%, Kong Yukong of the length of blade；
The wind energy conversion system rises 1.8% than blade wind motor rated power of not retrofiting；
The wind energy conversion system averagely reduces 1.59% than blade wind motor rotation fundamental frequency noise of not retrofiting.
2. a kind of wind energy conversion system is it is characterised in that it includes the blade of the linear micropore shape of blade inlet edge as described in claim 1, lead
Flow cover, generator, controller, battery, inverter and current loading；
The pod is located at the front end of affiliated blade, and affiliated generator is located at the rear portion of affiliated blade, the generator, institute
It states battery to be electrically connected with the controller, the battery, the current loading are electrically connected with the inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709546.8A CN109386425A (en) | 2017-08-09 | 2017-08-09 | The pneumatic equipment bladess and wind energy conversion system of a kind of linear micro- cavernous structure of blade inlet edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710709546.8A CN109386425A (en) | 2017-08-09 | 2017-08-09 | The pneumatic equipment bladess and wind energy conversion system of a kind of linear micro- cavernous structure of blade inlet edge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386425A true CN109386425A (en) | 2019-02-26 |
Family
ID=65416397
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| CN201710709546.8A Pending CN109386425A (en) | 2017-08-09 | 2017-08-09 | The pneumatic equipment bladess and wind energy conversion system of a kind of linear micro- cavernous structure of blade inlet edge |
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|---|---|---|---|---|
| JPH08240197A (en) * | 1995-03-03 | 1996-09-17 | Daikin Ind Ltd | Axial-flow fan |
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| US20100014970A1 (en) * | 2007-01-05 | 2010-01-21 | Lm Glasfiber A/S | Wind turbine blade with lift-regulating means in form of slots or holes |
| US20110142628A1 (en) * | 2010-06-11 | 2011-06-16 | General Electric Company | Wind turbine blades with controllable aerodynamic vortex elements |
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