CN109899230A - A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure - Google Patents
A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure Download PDFInfo
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- CN109899230A CN109899230A CN201711348034.XA CN201711348034A CN109899230A CN 109899230 A CN109899230 A CN 109899230A CN 201711348034 A CN201711348034 A CN 201711348034A CN 109899230 A CN109899230 A CN 109899230A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 46
- 230000004927 fusion Effects 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 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
- 230000009466 transformation Effects 0.000 abstract 1
- 238000007634 remodeling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000018199 S phase Effects 0.000 description 1
- 238000009825 accumulation 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
- 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
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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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
- 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
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Abstract
The present invention relates to wind power generation fields, it is in the pneumatic equipment bladess of fusion type structure more particularly, to a kind of blade tip, including blade body, the blade tip of blade body is in fusion type structure, a kind of wind energy conversion system is also provided, is in blade, pod, generator, controller, battery, inverter and the current loading of fusion type structure including blade tip.The present invention provides the pneumatic equipment bladess that a kind of blade tip is in fusion type structure, it retrofits in Blades For Horizontal Axis Wind blade tip, makes blade tip in fusion type structure, subtle transformation is carried out to blade tip 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 improving output power, Axis Wind Turbine With A Tip Vane noise is reduced again, reduces the degree of fatigue of blade, extends wind energy conversion system service life.
Description
Technical field
The present invention relates to wind power generation field more particularly to a kind of blade tips in the pneumatic equipment bladess of fusion type structure 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 retrofits in Blades For Horizontal Axis Wind blade tip, changes tip structure, is in fusion type structure, is not increasing
Blade tip is designed under the premise of blade cost, reduces wind energy conversion system noise, reduces the degree of fatigue of blade, extends wind-force
Machine service life is exploration accumulation experiment and the design experiences of wind wheel noise reduction approach.
Summary of the invention
The present invention retrofits in Blades For Horizontal Axis Wind blade tip, changes tip structure, is in fusion type structure, is not increasing
Under the premise of cost, design is improved to blade tip 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 blade tip provided by the invention is in the pneumatic equipment bladess of fusion type structure, including blade body, blade sheet
The tip segment of body has fusion type structure.
The present invention also provides a kind of wind energy conversion systems, are in blade, the pod, power generation of fusion type structure including blade tip
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.
A kind of blade tip provided by the invention is in the pneumatic equipment bladess of fusion type structure, to Blades For Horizontal Axis Wind leaf
Point remodeling, changes tip structure, and fusion type structure is presented, improves and sets to tip structure under the premise of not increasing cost
Meter, simple process, expense is low, sets juice convenient for integration, is produced on a large scale.Meanwhile guaranteeing what output power was basically unchanged
In the case of, 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.
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 that the present invention implements the blade tip provided in the schematic diagram at the pneumatic equipment bladess blade tip position of fusion type structure；
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 that blade tip of the present invention retrofits front and back wind energy conversion system in arrives stream wind speed 8m/s, x=40cm, and testing rotation angle is
90 ° of 7 measuring points rotate fundamental frequency noise variation diagram:
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 blade tip provided by the invention is in the pneumatic equipment bladess of fusion type structure, including blade sheet
Body, the blade tip of blade body are in fusion type structure, and the geometric parameter of fusion type structure includes that blade tip upwarps angle as α, and fillet is straight
Diameter is R, and blade tip upwarps height H.
The present invention also provides a kind of wind energy conversion systems, are in blade, pod, the generator, control of fusion type structure including blade tip
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.
The wind energy conversion system that do not retrofit for accurate pilot blade blade tip comprehensively with blade tip in the blade of fusion type structure
Noise properties, using acoustic array method adjust the distance the wind wheel section Plane of rotation 40cm 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 the pneumatic equipment bladess blade tip wing
The plane definition of type rear point is wind wheel Plane of rotation, and wind wheel rotary shaft and the intersection point of the plane are wind wheel rotation center, along wind
Wheel rotation center moves horizontally 30cm to wind 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, the blade tip designed is that upwarp angle be α=110 ° to blade tip in fusion type structural parameters,
Fillet diameter is R=4cm, and blade tip upwarps the wind energy conversion system of height H=4.5cm, compares with wind energy conversion system of not retrofiting.Specific test
Method be it is constant using loading, change the output power and power coefficient Cp of the test method(s) measurement wind energy conversion system of arrives stream wind speed
Variation.Test result is analyzed it can be concluded that between 6-10m/s, blade tip is in fusion type wind in measured wind speed range
The output power and blade tip of power machine do not retrofit wind energy conversion system output power it is little in 6m/s phase difference, in 8m/s blade tip in fusion
The output power of formula structure wind energy conversion system is increased, and total average raising is 1.9%；In the wind speed range of 6m/s-10m/s,
Blade tip is all higher than the power coefficient for wind energy conversion system of not retrofiting in the wind energy conversion system power coefficient of fusion type structure.Rated wind speed
Power corresponding to 8m/s is respectively that blade tip is not retrofited wind energy conversion system 68.4W, and blade tip is in fusion type structure wind energy conversion system 77.1W.Pass through meter
It calculates, blade tip is in power rise 12.7% after fusion type structure wind energy conversion system remodeling.It follows that the blade tip after remodeling is in fusion type knot
Structure wind energy conversion system has a certain impact to wind energy utilization and wind energy conversion system power is promoted.
In the present embodiment, by blade tip remodeling anterior-posterior horizontal axis wind mill wind wheel blade tip downstream under rated wind speed 8m/s
The analysis of 3D region noise pattern, the spectrogram of Axis Wind Turbine With A Tip Vane noise region are mainly the rotation fundamental frequency by wind wheel blade
And blade tip vortex shedding frequency, the wind-tunnel power fan that the rotation of harmonic wave, blade generates rotate the frequency composition generated.What we used
Fusion type tip structure parameter is that upwarp angle be α=110 ° to blade tip, and fillet diameter is R=4cm, and blade tip upwarps height H=
4.5cm.Then testing wind energy conversion system after not retrofiting and retrofiting, in arrives stream wind speed 8m/s, x=40cm tests 7 that rotation angle is 90 °
Fig. 3 is shown in the variation of rotational noise corresponding to a measuring point.
As seen from Figure 3, the influence that blade tip generates the rotational noise of wind wheel in the blade of fusion type structure, makes to rotate fundamental frequency
And its spectrogram peaks corresponding to the frequency of harmonic relationships (namely rotational noise) have in test zone and are decreased obviously
Trend, rotation fundamental frequency noise changing value averagely reduce 1.72%.It follows that reducing rotation base after blade tip remodeling
Frequency noise.
By the remodeling of tip structure, a kind of blade tip provided by the invention is in the pneumatic equipment bladess and wind-force of fusion type structure
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
Power machine 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
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or some or all of the technical features is carried out
Equivalent replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (3)
1. the pneumatic equipment bladess that a kind of blade tip is in fusion type structure, which is characterized in that including blade body, the blade sheet
The blade tip of body is in fusion type structure.
2. the pneumatic equipment bladess that a kind of blade tip is in fusion type structure, which is characterized in that blade tip fusion type structural parameters are leaf
It is α=110 ° that point, which upwarps angle, and fillet diameter is R=4cm, and blade tip upwarps height H=4.5cm.
3. a kind of wind energy conversion system is it is characterised in that it includes blade tip as described in claim 1 is in blade, the water conservancy diversion of fusion type structure
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 connect with the inverter；
In order to it is accurate comprehensively pilot blade blade tip do not retrofit with blade tip in fusion type structure blade wind energy conversion system it is pneumatic
Characteristic and noise characteristic are respectively using output power power corresponding to rated wind speed 8m/s that wind tunnel test obtains wind energy conversion system
Blade tip is not retrofited wind energy conversion system 68.4W, and blade tip is in fusion type structure wind energy conversion system 77.1W, and blade tip is in fusion type structure wind energy conversion system power
Rise 12.7%；The influence that blade tip generates the rotational noise of wind wheel in the blade of fusion type structure, makes to rotate corresponding to fundamental frequency
Noise figure averagely reduce 1.72%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348034.XA CN109899230A (en) | 2017-12-07 | 2017-12-07 | A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711348034.XA CN109899230A (en) | 2017-12-07 | 2017-12-07 | A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure |
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| CN109899230A true CN109899230A (en) | 2019-06-18 |
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| CN201711348034.XA Pending CN109899230A (en) | 2017-12-07 | 2017-12-07 | A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060216153A1 (en) * | 2003-01-02 | 2006-09-28 | Aloys Wobben | Rotor blade for a wind power plant |
| CN102465829A (en) * | 2010-11-16 | 2012-05-23 | 通用电气公司 | Winglet for wind turbine rotor blade |
| CN104963808A (en) * | 2015-07-22 | 2015-10-07 | 代元军 | Wind generator blade having W-shaped tips and wind generator |
| CN206111424U (en) * | 2016-07-27 | 2017-04-19 | 北京博比风电科技有限公司 | Green's wing flap adds increase winglet wind -powered electricity generation blade |
| CN207795455U (en) * | 2017-12-07 | 2018-08-31 | 代元军 | A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure |
-
2017
- 2017-12-07 CN CN201711348034.XA patent/CN109899230A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060216153A1 (en) * | 2003-01-02 | 2006-09-28 | Aloys Wobben | Rotor blade for a wind power plant |
| CN102465829A (en) * | 2010-11-16 | 2012-05-23 | 通用电气公司 | Winglet for wind turbine rotor blade |
| CN104963808A (en) * | 2015-07-22 | 2015-10-07 | 代元军 | Wind generator blade having W-shaped tips and wind generator |
| CN206111424U (en) * | 2016-07-27 | 2017-04-19 | 北京博比风电科技有限公司 | Green's wing flap adds increase winglet wind -powered electricity generation blade |
| CN207795455U (en) * | 2017-12-07 | 2018-08-31 | 代元军 | A kind of blade tip is in the pneumatic equipment bladess and wind energy conversion system of fusion type structure |
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