CN103452766B - A kind of wind energy conversion system of blade tip band V-type notching construction - Google Patents
A kind of wind energy conversion system of blade tip band V-type notching construction Download PDFInfo
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- CN103452766B CN103452766B CN201310395606.5A CN201310395606A CN103452766B CN 103452766 B CN103452766 B CN 103452766B CN 201310395606 A CN201310395606 A CN 201310395606A CN 103452766 B CN103452766 B CN 103452766B
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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
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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 the wind energy conversion system of a kind of blade tip band V-type notching construction, including kuppe (1), the blade (2) of tip band V-groove, electromotor (3), controller (6), accumulator (7), inverter (8), AC load (9) and DC load (10).This Axis Wind Turbine With A Tip Vane is slotted, and makes tip structure change, presents V-structure, tip structure improves on the premise of not increasing cost design, and technique is simple, and expense is low, it is simple to integrated design, is produced on a large scale.
Description
Technical field
The present invention relates to the wind energy conversion system of a kind of blade tip band V-type notching construction.
Background technology
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 proposes
Various methods, such as the blade using aeroperformance to optimize, the aerofoil profile of design low-noise high-efficiency, at wind wheel
Periphery increases bubbler (Diffuser), adds wing flap at trailing edge, adds winglet (Tip Vane) at blade tip
Deng.Above method be all by add on blade pneumatic original paper and design new blade change the pneumatic spy of wind energy conversion system
Property, in order to reduce wind energy conversion system aerodynamic noise, but add pneumatic original paper and all can change wind energy conversion system with designing new blade
Structural dynamic mechanical characteristic, make problem complicated, make influence factor increase, increase research difficulty.
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 at present can reach far away this limit.Because the pattern of wind energy conversion system,
Structure, the aerofoil profile of blade, leaf, process for machining and manufacturing, mounting technique level and wind energy conversion system infield wind
The factors such as complicated and changeable, the unstability of resource, all directly affect power coefficient and wind energy conversion system are made an uproar
The generation of sound.In order to improve the power coefficient of wind energy conversion system and reduce wind energy conversion system noise, the research of countries in the world
Person proposes various method, as used the blade of aeroperformance optimization, the aerofoil profile of design low-noise high-efficiency,
Increase bubbler (Diffuser) in wind wheel periphery, add wing flap at trailing edge, add winglet (Tip at blade tip
Vane) etc..
Adding the suitable winglet of structure at horizontal-shaft wind turbine blade tip, the pressure that can be effectively improved wind wheel surface divides
Cloth, increases the power coefficient of wind energy conversion system, improves the power output of wind energy conversion system, strengthens its Structure dynamic characteristics,
Reduce wind energy conversion system noise.
Adding winglet at horizontal-shaft wind turbine blade tip is to manufacture winglet relatively costly in order to the shortcoming of noise-reduction method,
Technique is more complicated, winglet installation difficulty, increases mounting cost, winglet and blade can not integrated design, inconvenience
In large-scale production.
The present invention slots at horizontal-shaft wind turbine blade tip, makes tip structure change, presents V-structure, is not increasing
On the premise of adding cost, tip structure is improved design, reduce Axis Wind Turbine With A Tip Vane noise, reduce the tired of blade
Labor degree, extends wind energy conversion system service life, and the exploration for wind wheel noise reduction approach accumulates experiment and design experiences.
Summary of the invention
In order to overcome defect of the prior art, the present invention provides the wind of a kind of blade tip band V-type notching construction
Power machine, including kuppe (1), the blade (2) of tip band V-groove, electromotor (3), controller (6),
Accumulator (7), inverter (8), AC load (9) and DC load (10).It is characterized in that
Described kuppe (1) is positioned at the front end of blade (2), and electromotor (3) is positioned at the rear portion of blade (2),
Described electromotor (3) is connected with controller (6) by wire, this controller (6) and accumulator (7) phase
Even, described inverter (8) is connected with accumulator (7) with after DC load (10) parallel connection, described inverter
(8) the other end is connected with current load (9).
Described blade (2) drives electromotor (3) to send alternating current.After alternating current via controller (6) rectification,
Accumulator (7) is charged.The unidirectional current part that accumulator (7) provides directly feeds DC load (10)
Using, another part, through inverter (8), becomes unidirectional current into alternating current supply AC load (9) and uses.
The end of the blade (2) of described tip band V-groove has V-groove, and this V-groove has subtended angle θ,
The value of this θ is 30-60 °.
Wind energy conversion system in the case of ensureing that output is basically unchanged, the blade of tip band V-groove than blade tip without
The blade noise of V-type fluting averagely declines 4-8dB.
The rear portion of described electromotor (3) is connected with tail vane (4).
Described electromotor (3) lower section has pylon (5), for support blade.
Beneficial effect:
Present configuration is simple, reasonable in design, easy to operate, slots at horizontal-shaft wind turbine blade tip, makes blade tip
Structure changes, and presents V-structure, tip structure improves on the premise of not increasing cost design, work
Skill is simple, and expense is low, it is simple to integrated design, is produced on a large scale.Meanwhile, ensureing that output is basic
In the case of constant, reduce Axis Wind Turbine With A Tip Vane noise, reduce the degree of fatigue of blade, extend wind energy conversion system and use the longevity
Life, the exploration for wind wheel noise reduction approach accumulates experiment and design experiences.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the blade tip schematic diagram of band V-groove of the present invention；
Fig. 3 is that 10 testing sections layouts of acoustic array of cross section, territory, the wind energy conversion system near-wake region noise of the present invention are shown
It is intended to；
Fig. 4 is the acoustic array experiment test of single cross section, territory, the wind energy conversion system near-wake region noise of the present invention；
Fig. 5 is territory, the wind energy conversion system near-wake region of the present invention anglec of rotation 10 testing section point layout when being 900
Schematic diagram；
Fig. 6 is that the present invention tests the anglec of rotation in 120 ° of lower 6 cross sections with or without blade tip V-type fluting when λ=5.5
Measuring point sound pressure level figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is expanded on further.
The wind energy conversion system of a kind of blade tip band V-type notching construction, including kuppe (1), tip band V-groove
Blade (2), electromotor (3), controller (6), accumulator (7), inverter (8), AC load (9)
With DC load (10).
Described kuppe (1) is positioned at the front end of blade (2), and electromotor (3) is positioned at the rear portion of blade (2),
Described electromotor (3) is connected with controller (6) by wire, this controller (6) and accumulator (7) phase
Even, described inverter (8) is connected with accumulator (7) with after DC load (10) parallel connection, described inverter
(8) the other end is connected with current load (9).
Described blade (2) drives electromotor (3) to send alternating current.After alternating current via controller (6) rectification,
Accumulator (7) is charged.The unidirectional current part that accumulator (7) provides directly feeds DC load (10)
Using, another part, through inverter (8), becomes unidirectional current into alternating current supply AC load (9) and uses.
The end of the blade (2) of described tip band V-groove has V-groove, and this V-groove has subtended angle θ,
The value of this θ is 30-60 °.
Described wind energy conversion system is in the case of ensureing that output is basically unchanged, and the blade of tip band V-groove compares blade tip
Blade noise without V-type fluting averagely declines 4-8dB.
The rear portion of described electromotor (3) is connected with tail vane (4).
Described electromotor (3) lower section has pylon (5), for support blade.
Experiment is according to GB/T19068.3-2003 " off-network type wind power generating set third portion: wind tunnel experiment side
Method " standard and GB/T19068.2-2003 " off-network type wind power generating set part 2: experimental technique " with
And GB/T6882-2008 " acoustic sound pressure method measures Sound Power Level of Noise Source " standard.Wind tunnel experiment is at B1/K2
Low-speed wind tunnel outlet section is carried out.This experiment uses acoustic array method to ensureing that specified to flow wind speed 10m/s constant
Time, test specified tip-speed ratio (λ) at 5.5 times blade tip 3D regions, in order to avoid the driftage of wind wheel tail vane causes
For flow field and the disturbance of sound field, by wind wheel just to wind-tunnel centralized positioning, fix tail vane simultaneously.
In order to accurate comprehensively test 300W blade tip is without the making an uproar of wind energy conversion system of V-type fluting and tip band V-type fluting
Sound characteristics, utilizes acoustic array method to test 1530, cross section, 10, wind wheel downstream point.Its test zone three
Dimension coordinate axle is defined as, vertical with wind wheel rotary shaft and fixed by the plane of pneumatic equipment blades blade tip aerofoil profile leading edge point
Justice is wind wheel Plane of rotation, and wind wheel rotary shaft is wind wheel center of rotation with the intersection point of this plane.In rotating along wind wheel
The heart outwards moves horizontally 30cm to wind wheel Plane of rotation radial direction, is set to coordinate with ground distance 175cm
Initial point o.It is x-axis by initial point and the axle carrying out levelling row and fetches the forward that flow path direction is x-axis.By former
The parallel ground of point and down-flowing incoming are y-axis, and row ground of making even is the forward of y-axis away from initial point.Pass through initial point
Axle perpendicular to the ground is z-axis, takes the forward the most upwards for z-axis.Along x-axis just start from initial point o
Arranging a cross section to every 10cm, arrange 10 altogether, first cross section is the yoz plane of x=10cm.
From the semicircle of 0 ° (perpendicular to the ground) to 180 ° on each yoz cross section, every 10 ° of totally 18 test rotations
Angle is tested, each test anglec of rotation 8 measuring points of layout, each measuring point interval 10cm, each cross section,
First measuring point distance x-axis 10cm of each angle.Fig. 3 to 5 is shown in by its concrete test arrangement schematic diagram.
By blade tip is slotted and the wind wheel of horizontal axis wind turbine blade tip of tip band V-type of the present invention fluting without V-type
The noise that downstream 3D region rotates corresponding to fundamental frequency 37.5Hz is analyzed and contrasts.
With λ=5.5, the test anglec of rotation is 120 °, is analyzed, sees Fig. 6 (a) as a example by 6 cross section measuring point sound pressure levels
Cross section 1, the maximum that after tip band V-type fluting, rotational noise measuring point sound pressure level declines is 7dB, and minima is
1dB, averagely drops to 4dB；Fig. 6 (b) cross section 2, rotational noise measuring point sound pressure level after tip band V-type fluting
The maximum declined is 13dB, and minima is 1dB, averagely drops to 6dB；Fig. 6 (c) cross section 3, blade tip
The maximum that after slotting with V-type, rotational noise measuring point sound pressure level declines is 10dB, and minima is 5dB, average under
Reduce to 8.0dB；Fig. 6 (d) cross section 4, after tip band V-type fluting, rotational noise measuring point sound pressure level declines
Big value is 10dB, and minima is 1dB, averagely drops to 4dB；Fig. 6 (e) cross section 5, tip band V-type is opened
The maximum that after groove, rotational noise measuring point sound pressure level declines is 10dB, and minima is 1dB, averagely drops to 4dB；
Fig. 6 (f) cross section 6, the maximum that after tip band V-type fluting, rotational noise measuring point sound pressure level declines is 12dB,
Minima is 2dB, averagely drops to 5dB.
As shown in Figure 6, in 6 cross sections, after at the namely x=30cm of cross section 3 being tip band V-type fluting
Rotational noise measuring point sound pressure level averagely declines the cross section of maximum.After tip band V-type fluting, rotational noise is corresponding
Sound pressure level is still concentrated mainly on the 1st to 4 measuring point, and measuring point 1 is gradually reduced to measuring point 4 sound pressure level,
Along with the rear shifting of test surfaces on x direction (axial direction), the sound pressure level of rotational noise becomes the trend of decay,
Between distance wind wheel x=10-40cm, noise attentuation amplitude is relatively big, and its decay noise figure is 23dB, close to the back of the body
Scape noise；Between distance wind wheel x=40-60cm, noise attentuation amplitude reduces, and its decay noise figure is 10dB,
Less than background noise.
Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition should
Understanding, after having read the content that the present invention lectures, the present invention can be made various changing by those skilled in the art
Moving or amendment, these equivalent form of values fall within the application appended claims limited range equally.
Claims (4)
1. the wind energy conversion system of a blade tip band V-type notching construction, including kuppe (1), the blade (2) of tip band V-groove, electromotor (3), controller (6), accumulator (7), inverter (8), AC load (9) and DC load (10), it is characterized in that
Described kuppe (1) is positioned at the front end of blade (2), electromotor (3) is positioned at the rear portion of blade (2), described electromotor (3) is connected with controller (6) by wire, this controller (6) is connected with accumulator (7), described inverter (8) is connected with accumulator (7) with after DC load (10) parallel connection, and the other end of described inverter (8) is connected with AC load (9)；
Described blade (2) drives electromotor (3) to send alternating current；After alternating current via controller (6) rectification, accumulator (7) is charged: the unidirectional current part that accumulator (7) provides directly feeds DC load (10) and uses, another part, through inverter (8), becomes unidirectional current into alternating current supply AC load (9) and uses；
Described wind energy conversion system is in the case of ensureing that output is basically unchanged, and the blade noise that the blade of tip band V-groove is slotted without V-type than blade tip averagely declines 4-8dB.
The wind energy conversion system of a kind of blade tip band V-type notching construction the most as claimed in claim 1, it is characterised in that the end of the blade (2) of described tip band V-groove has V-groove, and this V-groove has subtended angle θ, and the value of this θ is 30-60 °.
The wind energy conversion system of a kind of blade tip band V-type notching construction the most as claimed in claim 1, it is characterised in that the rear portion of described electromotor (3) is connected with tail vane (4).
The wind energy conversion system of a kind of blade tip band V-type notching construction the most as claimed in claim 1, it is characterised in that described electromotor (3) lower section has pylon (5), for support blade.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395606.5A CN103452766B (en) | 2013-09-04 | 2013-09-04 | A kind of wind energy conversion system of blade tip band V-type notching construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310395606.5A CN103452766B (en) | 2013-09-04 | 2013-09-04 | A kind of wind energy conversion system of blade tip band V-type notching construction |
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| CN103452766A CN103452766A (en) | 2013-12-18 |
| CN103452766B true CN103452766B (en) | 2016-09-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948396B (en) * | 2015-07-22 | 2017-12-05 | 新疆工程学院 | Blade tip trailing edge is serrated the pneumatic equipment bladess and wind energy conversion system of structure |
| CN104963808B (en) * | 2015-07-22 | 2018-03-27 | 新疆工程学院 | Blade tip is in the pneumatic equipment bladess and wind energy conversion system of W type structures |
| CN105201748A (en) * | 2015-09-30 | 2015-12-30 | 王相民 | Power device utilizing complementation of accumulated electricity and wind electricity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202300875U (en) * | 2011-11-11 | 2012-07-04 | 陈建武 | Fan blade for fishing |
| JP2012149569A (en) * | 2011-01-19 | 2012-08-09 | Institute Of National Colleges Of Technology Japan | Lightning protection method and device for windmill |
| CN102678446A (en) * | 2011-03-11 | 2012-09-19 | 张家港市九鼎机械有限公司 | Wind power generation device |
| CN203515965U (en) * | 2013-09-04 | 2014-04-02 | 代元军 | Wind machine with blade tips provided with V-type slotting structures |
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2013
- 2013-09-04 CN CN201310395606.5A patent/CN103452766B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012149569A (en) * | 2011-01-19 | 2012-08-09 | Institute Of National Colleges Of Technology Japan | Lightning protection method and device for windmill |
| CN102678446A (en) * | 2011-03-11 | 2012-09-19 | 张家港市九鼎机械有限公司 | Wind power generation device |
| CN202300875U (en) * | 2011-11-11 | 2012-07-04 | 陈建武 | Fan blade for fishing |
| CN203515965U (en) * | 2013-09-04 | 2014-04-02 | 代元军 | Wind machine with blade tips provided with V-type slotting structures |
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Effective date of registration: 20160810 Address after: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Xinjiang Institute of electric power engineering Applicant after: Xinjiang Institute of Engineering Address before: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Applicant before: Dai Yuanjun |
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