CN108716451A - Trailing edge device combining functions of increasing functions, reducing noise and preventing lightning and installation method - Google Patents
Trailing edge device combining functions of increasing functions, reducing noise and preventing lightning and installation method Download PDFInfo
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- CN108716451A CN108716451A CN201810851995.0A CN201810851995A CN108716451A CN 108716451 A CN108716451 A CN 108716451A CN 201810851995 A CN201810851995 A CN 201810851995A CN 108716451 A CN108716451 A CN 108716451A
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- lightning protection
- trailing edge
- blade
- noise reduction
- edge devices
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- 238000009434 installation Methods 0.000 title claims abstract description 15
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- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 210000003205 muscle Anatomy 0.000 description 7
- 208000025274 Lightning injury Diseases 0.000 description 5
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
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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
- 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
- F03D80/30—Lightning protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—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
Abstract
The invention discloses a trailing edge device with functions of increasing power, reducing noise and preventing lightning and an installation method thereof, wherein the trailing edge device comprises an L type lightning protection noise reduction power increasing device and a flat type lightning protection noise reduction power increasing device, the L type lightning protection noise reduction power increasing device and the flat type lightning protection noise reducing device contain metal materials and are installed at the trailing edge of a pressure surface of a blade, one end of a lightning protection wire is connected with a L type lightning protection noise reduction power increasing component or a flat type lightning protection noise reducing component, and the other end of the lightning protection wire is connected with a lightning arrester of a blade body main body or a lightning protection wire of the blade main body.
Description
Technical field
The present invention relates to fan blade of wind generating set technical fields, and in particular to one kind, which combines, to be increased work(, noise reduction, prevents
The trailing edge devices and installation method of thunder function.
Background technology
The investigation discovery of case is destroyed by being largely struck by lightning to blade, wind electricity blade is in rotating operation, neighbouring electromagnetic field
It can change with blade rotation, eventually leading to lightning stroke can not necessarily fall in blade tip position, but fall in blade tip certain distance
The posterior border position of range.Current arrester is typically all when the above situation occurs, to be struck by lightning in blade tip and rear scattering device
Very maximum probability cannot be fallen on arrester, and the blade tip posterior border position being easily struck by lightning such as is arranged continuously distributed arrester, must
It will be substantially improved and connect sudden strain of a muscle efficiency.
Blade tip posterior border position is also the installation site for increasing work(, noise-reducing components, and the increasings such as gurney flap are currently installed on blade
Work(attachment has become one of the main method for promoting unit generated energy, and according to blade aerodynamic performance, gurney flap is mainly distributed
The direct posterior border position of blade tip is arrived in length of blade 2/3rds.The noise of blade is primarily generated at trailing edge, therefore noise reduction
Component also is disposed on the posterior border position of blade.
In view of realizing that the component of above-mentioned three kinds of functions all installs the rear edge part in blade tip section concentratedly, as can by these three
Function can combine realization, not only can be to avoid being interfered with each other between different components, simplifying technique, raising reliability of structure, also
Expand to connect significantly and dodge region, greatly improves and connect sudden strain of a muscle rate.
Invention content
The purpose of the present invention is to provide a kind of wind power generation blade rear dresses combining increasing work(, noise reduction, lightning protection function
It sets and installation method, to solve the problems, such as to propose in above-mentioned background.
To achieve the above object, the present invention uses following technical scheme：A kind of combine increases work(, noise reduction, lightning protection function
There are Wind turbines to increase work(, blade noise reduction, three kinds of functions of blade lightning protection simultaneously for trailing edge devices, described device；And it is specific using its
Arrangement, the increasing work(of realization device entirety, noise reduction, blade actively draws thunder, the ability for preventing blade body to be struck by lightning.
Wherein, the trailing edge devices are plate-shaped member, and two kinds of structure types can be used：L-type or plate plate-like portion
Part, at least installation one or two are installed simultaneously on blade.
Wherein, its increasing function power of the trailing edge devices is that the rear of blade is mounted on using the device, increases rear
What what wind sweeping area and rear increase were reversely vortexed theoretically realized.It is sawtooth that noise reduction capability, which is by the tip design of the component,
Shape.Lightning protection capability is embedded or outer patch super thin metal piece and the coat of metal will to be realized on the basis of increasing work(component, in addition, rear
Device can also integrally use metal material；
Wherein, its noise reduction of the trailing edge devices and lightning protection properties can also be realized by another form, the one of device
Sawtooth pattern hairbrush is arranged in side, and sawtooth pattern hairbrush is the hairbrush containing wire, and the other side is bonded on blade shell, adhesion width
Using 10-100mm ranges；
Wherein, the trailing edge devices main body is mounted on blade pressure surface rear, device one end and blade tip arrester or aluminium
Blade tip connects, and the other end is connected on blade arrester or blade body lightning protection conducting wire；
Wherein, the lightning protection conducting wire, one end connect lightning protection noise reduction increase work(component, one end be connected to blade main body arrester or
Blade body lightning protection conducting wire；
Wherein, the L-type lightning protection noise reduction power enhancer, using L shapes, wherein horizontal sides are used for the viscous of blade shell
It connects, vertical edge is processed into sawtooth pattern, highly uses 10mm-100mm ranges；
Wherein, the plate lightning protection denoising device is mounted on blade pressure surface rear, using flat panel contours, tablet one
Zigzag fashion or sawtooth pattern hairbrush are processed into side, and sawtooth pattern hairbrush is the hairbrush containing wire, and the other side is bonded in blade shell
On body, adhesion width uses 10-100mm ranges；
Wherein, the L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device, according to different pneumatic functions
Demand opens up the pressure face rear to position, to obtain optimal result mounted on blade difference；
Wherein, the L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device use metal between adjacent stream oriented device
Part connects, and ensures conduction between component.
Wherein, the layout of two kinds of devices is optimized by the way of co-design, determines that L-type lightning protection noise reduction increases work(dress
After setting installation site and range, according to aerodynamic characteristic, the blade trailing edge flow feature of vane airfoil profile, auxiliary uses plate lightning protection
Denoising device, the lightning protection being optimal, increase effect fruit at noise reduction.
In addition, the invention also discloses a kind of wind power generation blade trailing edge devices combining increasing work(, noise reduction, lightning protection function
Be designed and arranged method.
(1), lightning protection, drop are carried out to wind power generating set using one or two kinds of trailing edge devices optimum organizations in trailing edge
It makes an uproar, increase work(, the trailing edge devices include L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device；
(2), by the further investigation to blade aerodynamic characteristic, the combination and accurate positionin of two kinds of components are determined；
(3), the layout of stream oriented device is optimized by the way of co-design, determines L-type lightning protection noise reduction power enhancer
After installation site and range, according to aerodynamic characteristic, the blade trailing edge flow feature of vane airfoil profile, auxiliary is dropped using plate lightning protection
It makes an uproar device, the lightning protection being optimal, increases effect fruit at noise reduction.
Wherein, the L-type lightning protection noise reduction power enhancer is mounted on blade pressure surface rear, opens up to can be distributed in length of blade
2/3rds arrive blade tip position, its installation site of incorporation engineering algorithm optimization, and effect is to increase effectively curved at airfoil trailing edge
Degree provides the lift coefficient under the design conditions of section and achievees the purpose that increase pneumatic efficiency.Its broached-tooth design can also be effective
The characteristic that falls off for improving blade trailing edge whirlpool, so as to achieve the effect that reduce noise.
Wherein, the plate lightning protection denoising device is mounted on blade pressure surface rear, opens up to can be distributed in length of blade
2/3rds arrive blade tip position, and main function is the spy that falls off for effectively improving blade trailing edge whirlpool by trailing edge serrations structure
Property, so as to achieve the effect that reduce noise, while the chord length of blade is increased, also there is a degree of increasing work(to act on.
Wherein, according to simulation calculation, lightning stroke maximum probability is happened at close to the position of blade tip 5m, also can when lightning current is smaller
It appears in close to any position of blade tip 20m ranges, after the trailing edge devices for assigning noise reduction, increasing work(, which connect, dodges function, greatly improves
Area and region are dodged in connecing for blade, can effectively protect whole blade.
Compared with prior art, the present invention having the following advantages that and advantageous effect.
Compared to the scheme that traditional increasing work(, noise reduction and lightning protection function are implemented separately, three functions of the present invention are unified to be realized, main
It has the advantage that and advantageous effect.
1, three functions are unified realizes, avoids different device from directly interfering, simplifies mounting process, and improve structure can
By property；
2, three functions are unified realizes, construction period and cost are greatly reduced, and is easy to promote, be promoted conducive to industrialization；
3, the lightning protection conducting wire of the relatively current embedment inner cavity of external lightning-protection system, is more suitable for blade rotation status, improves anti-
Thunder system connects sudden strain of a muscle rate, and the lightning stroke for reducing blade and unit destroys, to improve the service life of unit.
4, it increases and connects sudden strain of a muscle area, improve and connect sudden strain of a muscle efficiency.
Description of the drawings
Fig. 1 show the structural schematic diagram of L-type trailing edge devices proposed by the present invention；
Fig. 2 show plate structural schematic diagram proposed by the present invention；
Fig. 3 is the scheme of installation of L-type trailing edge devices in Fig. 1；
Fig. 4 is Fig. 2 middle plateform type trailing edge devices scheme of installation；
Fig. 5 is the distribution situation of L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device in trailing edge.
Specific implementation mode
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
It should be noted that " connection " described herein and the word for expressing " connection ", as " being connected ",
" connected " etc. was both directly connected to another component including a certain component, and also passed through other component and another portion including a certain component
Part is connected.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in the present specification using belong to "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, component or module, component and/or combination thereof.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As Figure 1-Figure 5, the present invention provides a kind of combine to increase work(, noise reduction, the trailing edge devices of lightning protection function and peace
Dress method, blade pressure surface rear difference open up to region while installing L-type increasing work(noise reduction lightning protection device 1 and plate noise reduction lightning protection
One or both of device 2, to realize the increasing work(noise reduction lightning protection function optimized.
First, two kinds of trailing edge devices distributed areas are determined according to blade aerodynamic performance, flow feature, lightning stroke feature, then tied
The characteristic for closing the practical wind regime of wind field optimizes, and is adjusted to the appearance and size of two kinds of trailing edge devices, distributed areas,
Realize and increase work(, noise reduction, on the basis of lightning protection function, by the distributed area of each device of optimization design, improve device technique and
Reliability.
Increase the practical wind regime of Main Basiss wind field of work(function, the power curve of unit, blade aerodynamic shape etc. to be designed,
Influence the parameter of the power of the assembling unit as shown by the following formula：
Wherein, V:Mean wind speed, Cp：Power coefficient, η：System effectiveness, A:Wind sweeping area.Wherein:Cp=f (λ, Re ...) is i.e.
Power coefficient is tip-speed ratio, the function of the factors such as turbulence intensity.
The noise of blade is to be interacted to form boundary layer and wake flow by blade and stable state incoming, the air-flow wave thereby resulted in
Movable property life, including turbulent boundary layer trailing edge noise, laminar boundary layer Shedding Vortex noise detaches flow noise, blunt trailing edge noise and
Tip vortex noise.Wherein turbulent boundary layer trailing edge noise is the main source of wind energy conversion system high-frequency noise, can be expressed as：
In formula, SPp, SPsRespectively pressure face and suction surface turbulent boundary layer trailing edge noise；Respectively pressure face and
Suction surface trailing edge boundary layer displacement thickness；Ma, L, re, D is respectively Mach number, span-wise length, measuring distance and directivity function；
Stp, Sts, St1Respectively pressure face and suction surface defend Strouhal number, the experience Si Telahaer of clothing thickness based on boundary layer
Number；A is spectral shape function；K1, Δ K1For the empirical of modifying factor.
Sudden strain of a muscle mechanism is connect in order to disclose blades of large-scale wind driven generator lightning stroke, we design and implement large scale large air gap discharge
Experiment, and simulation calculation is combined, and is explained existing blade and is connect and dodges systematic protection effect difference and blade body thunder and lightning breakdown damage
The reason of hindering proposes that Novel connecting dodges the design scheme of lightning-protection system.
Electric field three-dimensional computations program near wind-driven generator by establishing different installed capacity different leaves rotation angles,
During calculating obtains thunder and lightning descending leader approach wind-driven generator, blade surface electric field is advised along the variation of blade different location
Rule；And as amplitude of lightning current increases, the changing rule of blade surface electric field.The result shows that closer to wind-driven generator leaf
Piece blade tip, surface field index enhancing, due to the influence of 3 blade constructions of wind-driven generator distribution, close to root of blade electric field
More uniformly.Lightning test proves during ontology discharge breakdown simultaneously, can be along with creeping discharge the phenomenon that.It is put along face
The path of electricity includes two kinds：It is developed to discharge breakdown point, along blade interior ground lead from blade edge (leading edge or trailing edge)
The direction of lay.
According to above-mentioned experiment and simulation result, by designing metal blade tip, metal trailing edge integrated blade arrester system
System may be implemented effectively to connect sudden strain of a muscle to blade thunder-strike current, and ensure the influence of blade aerodynamic, structural behaviour in allowable range
It is interior.
The optimal L-type lightning protection noise reduction power enhancer for increasing effect fruit is determined according to above-mentioned algorithm, wind tunnel test, lightning test
Size and installation region AC, determine play optimal noise reduction plate lightning protection denoising device size and installation region
BD, then finally install L-type lightning protection noise reduction power enhancer in region AC, and in region, CD installs plate lightning protection denoising device；
Lightning protection noise reduction power enhancer and plate lightning protection denoising device use nonmetallic materials plus super thin metal piece or non-gold
Belonging to material adds the coat of metal to constitute.Nonmetallic materials can use ASA, metal material to use copper.
Select 2 points of AB in closer to blade root a bit, such as nearby have blade arrester, then by L-type lightning protection noise reduction increase work(dress
It sets or plate lightning protection denoising device is connected with blade arrester, be connected with the main lightning protection conducting wire of blade if no arrester；By D points
Plate lightning protection denoising device be connected with blade primary aluminum blade tip or blade tip arrester.
L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device with the bonding way of blade use comprising and it is unlimited
It is bonded in structure glue bonded adhesives or pressure sensitive adhesive, blade surface is surface-treated before bonding, and processing mode includes simultaneously
It is not limited to the operations such as cleaning, polishing.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of combining the trailing edge devices for increasing work(, noise reduction, lightning protection function, which is characterized in that it is plate-shaped member, is mounted on leaf
The rear of piece, and tip design is zigzag, the plate-shaped member is embedded or outer patch super thin metal piece and real with the coat of metal
It is existing, alternatively, the plate-shaped member integrally uses metal material.
2. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 1, which is characterized in that institute
The structure type for stating plate-shaped member is：L-type is plate.
3. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 2, which is characterized in that
A kind of plate-shaped member of structure type is installed, alternatively, installing the plate-shaped member of two kinds of structure type simultaneously on blade.
4. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 3, which is characterized in that right
In plate-shaped member, it is arranged to zigzag fashion or sawtooth pattern hairbrush in one side, sawtooth pattern hairbrush is the hairbrush containing wire, separately
Side is bonded on blade shell, and adhesion width uses 10-100mm ranges.
5. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 4, which is characterized in that institute
The one end for stating plate-shaped member is connect with blade tip arrester or aluminium blade tip, and the other end is connected to blade arrester or blade body lightning protection
On conducting wire.
6. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 5, which is characterized in that institute
One end connection lightning protection noise reduction for stating lightning protection conducting wire increases work(plate-shaped member, and one end is connected to blade main body arrester or blade body is anti-
Thunder conducting wire.
7. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 3, which is characterized in that right
In L-type plate-shaped member, horizontal sides are used for the bonding with blade shell, and vertical edge is processed into sawtooth pattern, highly use 10mm-
100mm ranges.
8. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 3, which is characterized in that peace
Mounted in blade pressure surface rear, using flat panel contours, zigzag fashion or sawtooth pattern hairbrush, sawtooth pattern hairbrush are processed into tablet side
For the hairbrush containing wire, the other side is bonded on blade shell, and adhesion width uses 10-100mm ranges.
9. a kind of trailing edge devices combining increasing work(, noise reduction, lightning protection function according to claim 1, which is characterized in that institute
It is multiple to state trailing edge devices, and is connected using metalwork between adjacent rear edges device, ensures conduction between device.
10. it is a kind of combine increase work(, noise reduction, lightning protection function trailing edge devices installation method, it is characterised in that：Including walking as follows
Suddenly：
(1), trailing edge using one or two kinds of trailing edge devices optimum organizations to wind power generating set carry out lightning protection, noise reduction,
Increase work(, the trailing edge devices include L-type lightning protection noise reduction power enhancer and plate lightning protection denoising device；
(2), according to blade aerodynamic characteristic, the combination and accurate positionin of two kinds of components are determined；
(3), the layout of stream oriented device is optimized by the way of co-design.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851995.0A CN108716451A (en) | 2018-07-30 | 2018-07-30 | Trailing edge device combining functions of increasing functions, reducing noise and preventing lightning and installation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851995.0A CN108716451A (en) | 2018-07-30 | 2018-07-30 | Trailing edge device combining functions of increasing functions, reducing noise and preventing lightning and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021028573A1 (en) * | 2019-08-14 | 2021-02-18 | Power Curve Aps | Wind turbine blade with a gurney flap |
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| CN207609515U (en) * | 2017-12-20 | 2018-07-13 | 北京金风科创风电设备有限公司 | Blade and wind power generating set |
| CN108150344A (en) * | 2017-12-25 | 2018-06-12 | 江苏金风科技有限公司 | For the denoising structure, blade and wind power generating set of wind generator set blade |
| CN208749482U (en) * | 2018-07-30 | 2019-04-16 | 中科国风检测（天津）有限公司 | Trailing edge device combining functions of increasing functions, reducing noise and preventing lightning |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021028573A1 (en) * | 2019-08-14 | 2021-02-18 | Power Curve Aps | Wind turbine blade with a gurney flap |
| US11761418B2 (en) | 2019-08-14 | 2023-09-19 | Power Curve Aps | Wind turbine blade with a gurney flap |
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