CN108386314A - Flow-guiding type wind turbine blade structure - Google Patents
Flow-guiding type wind turbine blade structure Download PDFInfo
- Publication number
- CN108386314A CN108386314A CN201810230835.4A CN201810230835A CN108386314A CN 108386314 A CN108386314 A CN 108386314A CN 201810230835 A CN201810230835 A CN 201810230835A CN 108386314 A CN108386314 A CN 108386314A
- Authority
- CN
- China
- Prior art keywords
- wind
- diversion trench
- flow
- blade
- wind turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009792 diffusion process Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 48
- 210000002421 cell wall Anatomy 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 231100001261 hazardous Toxicity 0.000 abstract 1
- 238000013461 design Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000003190 augmentative effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000015170 shellfish Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004575 stone Substances 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of flow-guiding type wind turbine blade structures, it is made of blade, truss, wind scooper, diversion trench, puff prot.The present invention can be made come wind water conservancy diversion using diversion trench, puff prot, be turned to, and then establish specific wake flow in pneumatic equipment bladess tail portion using air-flow, to substitute the diffuser structure of diffusion formula wind turbine, efficiently utilize wind-force.The present invention improves power coefficient in such a way that diversion trench guides air turbulence, has the slow-speed of revolution, low noise, non-hazardous to birds, can enlargement, the features such as high power coefficient.
Description
Technical field
The invention belongs to wind energy conversion system fields, are related to a kind of resistance type wind turbine blade structure.Specifically one kind is based on
The resistance type pneumatic equipment bladess with guide trough structure of fluid mechanical design.It is advantageous that the pneumatic equipment bladess of this design
Although lower tip speed ratio can only be obtained, it is relatively high to the utilization rate of wind energy.Flow-guiding type wind turbine blade structure energy
Applied to horizontal-shaft wind turbine or it is applied to vertical axis windmill.It, can be relatively low when it is applied to horizontal-shaft wind turbine
Higher wind energy utilization is obtained under the premise of tip speed ratio.When it is applied to vertical axis windmill, the obverse and reverse of blade
It is equipped with guide trough structure, when can effectively solve vertical axis wind motor blade wheel and rotating to downstream area, blade is at overturning 180 degree angle
After the problem of doing negative work.
Background technology
Wind-force machine equipment can be divided into horizontal-shaft wind turbine and vertical axis windmill according to the difference of shaft relative position.It presses
Resistance type wind energy conversion system and lift formula wind energy conversion system can be roughly divided by classifying according to the use aspects to wind-force.
The main R＆D direction in conventional wind machine field is trunnion axis lift formula wind machine structure.It is characterized in that high blade tip speed
Than, high rotating speed, high power coefficient.But lift formula wind energy conversion system there are problems that some cause they unlike hydroelectric generation,
Other green regenerative energy sources of solar energy etc are universally accepted like that.Lift formula wind energy conversion system requires more wind environment
Harshness builds wind energy conversion system and is likely to unable to make ends meet if wind regime is undesirable.And the area for being adapted to fit wind energy conversion system is relatively fewer,
These regions are referred to as " wind field ".For most of environment except " wind field ", mainstream thoughts are should not to develop wind energy conversion system at present.
Meanwhile high tip speed ratio wind energy conversion system is environmentally friendly unlike low tip speed ratio wind energy conversion system.High tip speed ratio
Wind energy conversion system will produce a degree of noise (comprising high frequency noise and low frequency noise) in the process of running, this causes many people to refuse
Wind energy conversion system is installed near living area absolutely.And because wheel speed is higher, birds（Especially migratory bird）Passing through these wind-force
It can be killed by blade when the impeller range of machine.It can see from a large amount of social investigation documents in relation to wind energy utilization, high rotating speed
There is generate noise (comprising high frequency noise and low frequency noise), injury birds, influence the problems such as ecological environment for wind energy conversion system.Even
There are a certain number of wind energy conversion systems to be therefore deactivated or remove[1][2]。
Lift-type Axis Wind Turbine With A Tip Vane speed ratio is generally 3 to 8, and shaft resistance type windmill tip speed ratio is generally 0.3 to 0.6[3].That is shaft resistance type windmill wheel speed is relatively low.This represents resistance-type wind turbine and possesses lower rotating speed, to material
Intensity requirement is lower, almost without noise（The sound that shaft resistance type windmill generates when running can't be than contour trees by wind
The sound decibel number higher generated when blowing）, birds will not be injured（Slow-speed of revolution wind turbine impeller rotating speed is slower, and birds can be calm
Hide pneumatic equipment bladess）Etc. advantages.In wind energy conversion system field, shaft resistance type windmill is only green pollution-free truly
New energy（Noise pollution is one of main pollution of international recognition）.
Traditional shaft resistance type windmill mainly has flat shaft resistance type windmill, wind-cup type shaft resistance type windmill and diffusion formula
Wind turbine（Diffuser Augmented Wind Turbines abbreviations DAWT）.Wherein, diffusion formula wind turbine is also referred to as spread
Amplifier wind energy conversion system, concentarted wind energy wind energy conversion system, energy collecting type wind power generation plant etc..It is mainly characterized by outside conventional wind machine
Portion is installed by diffuser（Also known as kuppe）.It can make wind wheel downstream area generate negative pressure, swabbing action be formed, by the wind after concentrating
Impeller can be driven, then driving power device[4][5][6][7]。
There is data to show, flat resistance-type vertical axis wind turbine is about 25% to the utilization rate of wind energy, horizontal-shaft wind turbine
（10-100kw）Utilization rate to wind energy is about 30%-45%.Concentrated type wind energy conversion system can reach 52%（Betz limit is about
59.3%）.Bei Zi（Betz）Theory is the foundation stone of mankind nowadays development wind turbine technology.Hereby theory thinks shellfish, when air-flow passes through wind
Wheel（Ideal wind wheel）When, because speed declines, streamline must be spread.Utilize momentum theory, the pressure of wind wheel upstream and downstream
Difference, but be a constant on entire wind wheel section.
Shellfish hereby（Betz）In theory, air is by regarding continuous, incompressible perfect fluid.Gas on blade swept surface
Stream is uniform, no matter the direction of air velocity is in front of the blade or to flow through after blade be all that vertical vane swept surface (or is
It is Parallel airflow wheel axis), the wind wheel for meeting conditions above is known as " ideal wind wheel ".But actual conditions are：Air not only can be with
It is compressed, and is easily compressed.Meanwhile air is not but not perpendicular to blade swept surface in most cases, and big
Turbulent flow is will produce in most natural environments.
Invention content
In view of this, technical problem to be solved by the invention is to provide a kind of flow-guiding type wind turbine blade structures.He can utilize
Turbulent flow in air is oriented to and combs steadily by guide trough structure, makes to turn via the air-flow within the scope of blade using guide trough structure
To, compress and simulate diffusion formula wind turbine to a certain extent and make wind-force to efficiently utilize via the wind energy within the scope of impeller
Machine obtains better aeroperformance[8][9][10][11]。
In life, when we rinse the concave surface of spoon with the water in tap, flow can be dissipated along the concave surface of spoon four.
When we change spoon into V-groove structure（V-groove concave surface faces flow）, flow can spray from the both ends open of V-groove
It penetrates.When we close one end of V-groove, one end that flow can focus on V-groove opening sprays.V-groove can be simultaneously
By the active force of water impact and the reaction force of water flow jet.Its principle is that lasting flow is rushed first under effect of inertia
The cell wall of V-groove is hit, one active force of cell wall is given.The flow that follow-up flow and cell wall squeeze front from different directions leads to flow
Gush out from the unique exit of V-groove.When flow is gushed out, V-groove obtains a reaction force.
It can be seen that from above-mentioned example when one end of V-groove is closed, fluid can be from V-groove after pouring in V-groove opening face
The other end gush out.During this, V-groove can obtain two power.The resultant force of the two power can be applied directly on V-groove.
Proving by the same methods, under condition of equivalent, if the V-groove than amplification such as being also equipped on pneumatic equipment bladess（Diversion trench）
When structure, air-flow（Wind-force）Also can gush out from the outlet of diversion trench as the flow in above-mentioned example.It is gushed from diversion trench outlet
The air-flow gone out can provide additional, the thrust with directive property for blade.
In the present invention, when Axis Wind Turbine With A Tip Vane speed ratio is less than 1, wheel speed is less than wind speed.Wind-force can continue to push gas
Stream enters diversion trench, and the air-flow in diversion trench can continue to gush out from the outlet of diversion trench.As shown in Fig. 2, air is continuous
Air-flow（Wind-force）Diversion trench is poured under promotion, after being hindered by water conservancy diversion groove groove wall, flow direction, flow velocity change.Diversion trench at this time
Interior atmospheric density is higher than the atmospheric density in extraneous natural environment.Under the premise of wind turbine impeller rotating speed is constant, diversion trench
Interior air density change and air-flow velocity（Wind speed）It is directly proportional.
In order to further enhance the speed of diversion trench exit flow, a puff prot is set in diversion trench outlet port（Shrink spray
Mouth）, the effect one of puff prot is to improve the speed of jet-stream wind, and effect two is the angle of fixed jet-stream wind.Known fluid exists
Flow velocity under the premise of flow is constant is faster, and the thrust provided is bigger.Above-mentioned design can provide for blade of the present invention
The thrust of fixed angle.
Puff prot structural reference diffusion formula wind turbine is designed herein（Diffuser Augmented Wind
Turbines）Operation principle, when impeller, which rotates, to be moved forward, bucket rear atmospheric pressure is forced down compared with bucket front air.This leads
It causes the air-flow velocity of contracting noz(zle) injection to further increase, additional torque is provided for blade.
As shown in attached drawing 1, attached drawing 2, after pouring in diversion trench when air-flow with direction shown in arrow in scheming, by effect of inertia shadow
It rings, air-flow can be sprayed from attached nozzle location shown in Fig. 2.Attached drawing 1, attached drawing 2 show single diversion trench air velocity distribution simplification figure,
In figure air-flow is indicated with the filament with arrow.In order to improve air-flow（Wind-force）Utilization rate, is led in the present invention using a plurality of
Chute mode arranged side by side is arranged.The blade construction arranged by several V-type diversion trenches is described in attached drawing 3, is led when a plurality of
When chute arranged in parallel, adjacent diversion trench can efficiently use wind-force, prevent air-flow from escaping from diversion trench both sides.Actually answering
In, both ends of the blade further promotes the utilization rate to wind energy by way of installing baffle.
As shown in Fig. 6, horizontal-shaft wind turbine impeller, blade windward side are equipped with several diversion trenches.Impeller to revolve clockwise
Turn, diversion trench head end is closed and wind scooper is housed（Air scoop）, diversion trench tail end is equipped with spout.Work as air-flow（Wind-force）Pour in water conservancy diversion
After slot, under effect of inertia and the effect of follow-up airflow thrust, the air-flow in diversion trench is gushed out from spout.The air-flow gushed out and the external world
Airflow direction（Natural environment wind direction）It intersects, draught fan impeller air downstream flow field is compared with conventional wind machine impeller air downstream at this time
Flow field range increases.The air-flow of puff prot injection is substituted with the operation principle of the equipment such as similar bladeless fan, inflatable curtain machine with air-flow
Traditional diffusion formula wind turbine（Diffuser Augmented Wind Turbines）Wind-lead-cover structure, to improve wind wheel range
Interior air velocity then improves wind energy conversion system working efficiency[14]。
The design of diffusion formula wind turbine diffuser structure is replaced to be equally applicable to high tip speed ratio pneumatic equipment bladess with air-flow
On, working method is identical as water conservancy diversion slot type wind energy conversion system principle of the present invention.Diffusion formula During operation principle is, using leading
Fan housing structure generates negative pressure in wind wheel downstream area, forms swabbing action, drives impeller by the wind energy after concentrating, then driving is dynamic
Power apparatus.And if guide trough structure of the present invention be applied to high-speed wind mill blade when, impeller high speed rotation can drive
The high pressure draught of air flow at high speed, puff prot injection can form airhood in wind wheel downstream（Air curtain）.With traditional diffusion
Fixed wind scooper on formula wind turbine is compared, and the wind scooper of the present invention using air-flow manufacture possesses at low cost, light-weight
Etc. advantages.
Simple guide trough structure limited strength is installed to improve pneumatic equipment bladess intensity needs on pneumatic equipment bladess
Truss lift structure intensity.As shown in Fig. 5, diversion trench can both be ensured by space truss structure being installed on the cell wall of diversion trench
The lightweight of itself, and will not make a big impact to the utilization of air-flow.Wherein 0501 is diversion trench cross-sectional view of the structure itself,
0502 is sectional view after diversion trench installation truss, and 0503 is diversion trench truss structure figure.
Based on the above, it is possible to produce Blades For Horizontal Axis Wind structure as shown in Fig. 6.It possesses startup wind
Speed it is low, rotating speed is low, it is noiseless, environmentally friendly, the advantages such as birds will not be injured.
In the present invention, the main function of V-groove is guiding airflow direction, and diversion trench can be called according to its effect.
Diversion trench can be comprising the arbitrary guide trough structure including V-groove, U-type groove, and guide trough structure is according to the aeroperformance of itself
Using straight line, non-linear design.It is low, simple in structure using the guide trough structure manufacturing cost of linear design.It is set using non-rectilinear
The guide trough structure manufacturing cost of meter is high, complicated, but its aeroperformance is better than the guide trough structure using linear design.
The wide ownership range for not influencing the present invention than changing of diameter of diversion trench.
The aeroperformance of flow-guiding type wind turbine blade structure of the present invention and traditional lift formula wind energy conversion system and traditional
Flat shaft resistance type windmill, wind-cup type wind energy conversion system all differ widely.Therefore it designs, calculate pneumatic equipment bladess of the present invention
It needs to use completely new design method when aeroperformance.
Since it is considered that wind energy conversion system rotating speed of the present invention is relatively low, tip speed ratio is less than 1, it is assumed that wind of the present invention
Power machine blade is fixed structure（It is non-rotatable, it is irremovable）.The flow field of the wind energy conversion system is emulated using Fluent softwares
Analysis, can acquire the moment values of countershaft, and then acquire performance number and power coefficient[13]。
Wind-force machine equipment can be divided into horizontal-shaft wind turbine and vertical axis windmill according to the difference of shaft relative position.When
When wind energy conversion system uses horizontal axle construction, foregoing teachings can effectively improve utilization rate of the resistance type wind energy conversion system to wind energy.Work as wind-force
When machine uses perpendicular shaft configuration, it is based on guide trough structure of the present invention, is capable of providing a kind of completely new pneumatic structure layout.
The method of operation of vertical axis windmill is shaft and ground Relative vertical, and wind energy conversion system drive shaft is perpendicular to ground, wind
Power machine blade is in horizontal 360 degree rotation.Vertical axis windmill need not be carried out to wind, and no matter wind direction can have in any direction
Effect utilizes wind-force.But traditional resistance type vertical axis windmill mostly uses greatly Flat plate type blade structure or wind-cup type blade knot
Structure.These maximum features of design are pneumatic equipment bladess around center driven axis 360 degree rotation.This design causes to work as resistance type wind
Power machine blade rotation 180 degree can do negative work later.This is also the important original for causing vertical axis windmill low to wind energy utilization
One of because[3]。
As shown in Fig. 3, if by several V-type diversion trenches with parallel arranged, a complete leaf can finally be obtained
Chip architecture.That is, if using several continuous diversion trench parallel arrangeds, it will be able to obtain a front and reverse side is complete
Holosymmetric wind turbine blade structure.As shown in figure 04, the blade of vertical axis wind turbine layout of this design can efficiently use
Wind-force.From vertical axis wind motor blade wheel as shown in the figure rotate 4 directions air flow field figure, it can be seen that either on wind wheel
The blade of trip or the blade in wind wheel downstream, wind-force can be influenced by guide trough structure, be sprayed from blade afterbody.Institute in attached drawing 5
Show that truss structure can finally obtain a similar corrugated board structures as the support device of blade construction shown in attached drawing 3
Pneumatic equipment bladess.
Air flow field figure effect described in attached drawing 4 is only limitted to the case where tip speed ratio is less than 1.When wheel speed is more than wind speed
When, thrust will not be provided in diversion trench.Therefore, the wind-force machine equipment based on flow-guiding type vane design of wind turbines is only capable of providing low turn
Speed, large torque output.When the present invention is needed for driving power generator to be generated electricity, gearbox can be selected, drive shaft is provided
Torque carry out speed change, and then drive generator generate electricity.
In the present invention, described in claim 1：Several diversion trenches are set on wind energy conversion system each blade, diversion trench is
One opened type groove structure constitutes cell wall by U-shaped or V-structure, and diversion trench concave surface faces to come wind direction, carrys out wind（Air-flow）It is logical
The concave surface for crossing diversion trench pours in inside the groove body of diversion trench, is influenced by diversion trench trough body structure, is flowed along diversion trench；This section of content
Be core of the invention thought, made come wind using the structure of diversion trench（Air-flow）It turns to.Conventional wind machine, no matter
It is lift formula wind energy conversion system or resistance type wind energy conversion system, mostly uses the airfoil structure from aircraft greatly.And the present invention by reference to
Pertinent literature[8][11], using grooved surface turbulent flow drag reduction technology, guide trough structure is added for pneumatic equipment bladess, to improve wind-force
Usage factor of the machine blade to wind energy.
Diversion trench is set on pneumatic equipment bladess, and diversion trench setting direction is consistent with blade direction of rotation, for the ease of
The direction of description, in the present invention wind turbine impeller rotation is front, and diversion trench crossheading body is equipped with head end, tail end, and diversion trench is first
It is same direction in front of end and blade direction of rotation；As shown in Fig. 6, wind turbine impeller rotates clockwise in figure, each
Blade is equipped with several guide trough structures.The direction of blade rotation at this time is front, diversion trench head end and blade forward direction
Unanimously.Air-flow enters from channel openings, is sprayed from diversion trench tail end.
Diversion trench head end is equipped with wind scooper（Air scoop）Refer to that, when tip speed ratio is less than 1, air-flow is from water conservancy diversion in order to prevent
Slot head end is gushed out, and stops diversion trench head end using wind scooper.Meanwhile in order to reduce the air drag of impeller rotation, in diversion trench
Head end is equipped with wind scooper（Air scoop）.Wind scooper can be selected according to wind-driven generator blade wing section by several relatively independent wind-guidings
Cover structure forms, or several wind scoopers are integrated formula structure by selection.
Diversion trench tail end is unenclosed construction, wind-force（Air-flow）It is sprayed from tail end via after diversion trench；
It is equipped with puff prot in diversion trench tail end；Refer to as it was noted above, air-flow can be sprayed from water conservancy diversion slot tail.In order to obtain ideal
Wake flow form, in order to improve the utilization rate of wind-force, can select water conservancy diversion slot tail install additional puff prot.It is well known that fluid
Under the premise of flow is constant, the smaller then flow velocity of pipe diameter is faster.Wind-force is influenced by diversion trench, and the air pressure in diversion trench is compared
Ambient pressure opposite can increase, and it can be that blade brings additional thrust that more anticyclonic air-flow is sprayed by spout.
Guide trough structure of the present invention can be set on Blades For Horizontal Axis Wind, can also be set to vertical axis
On pneumatic equipment bladess, but the aerodynamic arrangement of horizontal-shaft wind turbine and vertical axis wind motor blade wheel and differ.Horizontal axis wind turbine
Diversion trench design on machine blade cannot treat different things as the same with the diversion trench design on blade of vertical axis wind turbine, specific technical solution
It needs according to natural environment, wind regime residing for wind energy conversion system, build purpose, be built into original decision.Those skilled in the art can be with
Various modification and variations are carried out without departing from the spirit and scope of the present invention to the present invention.If these modifications and change of the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to exist comprising these modification and variations type
It is interior.
Description of the drawings
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is done further below in conjunction with attached drawing
Detailed description, wherein：
Attached drawing 1 is diversion trench radial section air flow field figure, wherein number 3 indicates diversion trench trough body structure.With the thin of arrow
Line is air-flow direction, and the higher regional air density of filament density is bigger.
Attached drawing 2 be diversion trench axial cross section air flow field figure, wherein number 3 indicate diversion trench, number 4 indicate wind scooper,
Number 5 indicates puff prot.
Attached drawing 1 is single diversion trench air flow field structural schematic diagram with attached drawing 2.When air-flow pours in diversion trench as shown in the figure
It after open at one end, is influenced by guide trough structure, along diversion trench groove body flowing.At this time because Axis Wind Turbine With A Tip Vane speed ratio is less than 1, wind speed is big
Follow-up air-flow is caused to compress the air in diversion trench in wind turbine impeller rotating speed.Compressed air is sprayed from puff prot 5, is
Impeller provides extra-push model.
Attached drawing 3 is the structural schematic diagram that multiple diversion trenches form side by side, and it is arranged side by side to show multiple diversion trenches for wherein attached drawing 301
The side cutaway view of structure, attached drawing 302 show the vertical view of multiple guide trough structures.
Attached drawing 4 is vertical axis windmill air flow field schematic diagram.Number 1 is blade in figure（Vane nose is wind scooper, after
End is diversion trench and puff prot, is blade overlooking structure diagram in figure）, central vane annular arrow is wind turbine impeller rotation
Direction, the straight line with arrow is wind-force flow direction in figure.
Attached drawing 5 is blade truss structure schematic diagram, wherein 501 be blade side cutaway view, 502 cut open for blade truss structure
Face figure, 503 be truss three-dimensional structure diagram.
Attached drawing 6 is Blades For Horizontal Axis Wind structural schematic diagram, and wherein digital representation is：Truss 2, diversion trench 3, wind scooper
4, puff prot 5.
Specific implementation mode：
Below with reference to attached drawing, the preferred embodiment of the present invention is described in detail：It should be appreciated that preferred embodiment is only
Illustrate the present invention, the protection domain that is not intended to be limiting of the invention.
Embodiment 1:By taking resistance type horizontal-shaft wind turbine as an example.As shown in Fig. 6, a resistance type horizontal-shaft wind turbine,
Several diversion trenches are set on each blade of wind energy conversion system, and diversion trench is an opened type groove structure, by U-shaped or V-structure structure
At cell wall, diversion trench concave surface faces to come wind direction, carrys out wind（Air-flow）It is poured in inside the groove body of diversion trench by the concave surface of diversion trench,
It is influenced by diversion trench trough body structure, is flowed along diversion trench.Diversion trench is set on pneumatic equipment bladess, diversion trench setting direction and leaf
Piece direction of rotation is consistent, and for ease of description, the direction of wind turbine impeller rotation in the present invention is front, diversion trench crossheading
Body is equipped with head end, tail end, is same direction in front of diversion trench head end and blade direction of rotation.Diversion trench head end is equipped with wind scooper
（Air scoop）.Diversion trench tail end sets puff prot, wind-force（Air-flow）It is sprayed from puff prot via after diversion trench.
As shown in attached drawing 1, attached drawing 2, carry out wind brunt blade.Because wind-force is continual fluid, follow-up wind-force（Air-flow）Meeting
Constant impingement pneumatic equipment bladess.In the present invention, wind speed is caused to be more than wheel speed because tip speed ratio is less than 1, after then causing
Front air-flow can be compressed to inside diversion trench by continuous air-flow.Under the premise of wheel speed is constant, ambient wind velocity is higher, air-flow pressure
Contracting ratio is bigger.Compressed air is gushed out via diversion trench tail end, and puff prot air velocity is further increased by puff prot constraint.Most
Eventually, each puff prot on pneumatic equipment bladess of the present invention can provide additional torque for blade under the action of the wind.Meanwhile it spraying
Gas port possesses fixed angle, this causes vane design of wind turbines person that can plan wind energy conversion system flow field in advance.Shellfish hereby
（Betz）In theory, the variation of wind energy conversion system flow field only meets air-flow natural diffuseness curve, but when wind energy conversion system designer can be certainly
When professional etiquette draws wind energy conversion system flow field angle, range, wind energy conversion system just will further improve the utilization rate of wind energy.Such as text
It offers[4][5][6][7]It is described, diffusion formula wind turbine（Diffuser Augmented Wind Turbines）Water conservancy diversion cover structure can have
Effect promotes wind energy utilization, and can artificially be manufactured using air to a certain extent using pneumatic equipment bladess wake flow in the present invention
One dynamic, the water conservancy diversion cover structure being made of air-flow.The kuppe being made of air-flow（Airhood）It can make wind energy conversion system wake flow
Flow field is spread, and reduces flow field atmospheric pressure, and then improve the flow velocity of air within the scope of wind turbine impeller.
In this example, in order to ensure wind turbine impeller rotating speed is less than wind speed, impeller is connected with piston mechanism.With reference to wind
Power water elevator structural principle, by control piston pipeline in air-liquid flow in the way of can effectively control wind turbine impeller rotating speed.
In this example, conversion process of energy is divided into two steps：
--- impeller rotation --- several pistons --- drives gas or liquid flowing to step 1. wind-force；
--- --- high pressure tank --- compressed air-driven generator --- generates electricity step 2. gas for compression；
Step 2. liquid --- drawing water --- is irrigated, people and animals drink, industrial water, water oxygenation, sewage purification etc.；
--- water-storing device --- hydroelectric installation --- generates electricity step 2. liquid；
Above-mentioned conversion process of energy can carry out different collocation according to different application demand.
Embodiment 2：The present embodiment is horizontal-shaft wind turbine structure difference lies in embodiment 1 with embodiment 1, and this implementation
Example is vertical axis windmill structure.Flow field figure as shown in Fig. 4, the rotation parallel to the ground of vertical axis windmill structure impeller, wind
Force flow is through doing work to impeller when impeller range.Each blade as shown in attached drawing 301, pneumatically tie by blade tow sides in impeller
Structure is identical.Air-flow either still does work to blade from blade reverse side from face of blade, finally all can be from the nozzle at blade rear
Place is sprayed to blade rear.Direction blade is defined as, and the direction of impeller rotation is front, and corresponding direction is rear.
No matter the vertical axis windmill constituted with above-mentioned blade construction in impeller upstream or in impeller downstream can efficiently use wind-force,
Traditional wind-cup type wind energy conversion system is effectively alleviated the problem of doing negative work after rotating 180 degree.
Embodiment 3：The present embodiment is low speed wind power difference lies in embodiment 1, embodiment 2 with embodiment 1, embodiment 2
Machine, and the present embodiment is high-speed wind mill.In the present embodiment, based on conventional flat axis high-speed wind mill, in wind energy conversion system
Blade tip position is installed by guide trough structure.Conventional flat axis lift formula wind energy conversion system Diffusion of gas stream curve is smooth diffusion profile,
After Axis Wind Turbine With A Tip Vane is equipped with guide trough structure and jet mouth structure, high-speed rotating blade sprays air-flow to wind wheel extension.
With reference to bladeless fan operation principle, a dynamic can be established in wind wheel downstream after Axis Wind Turbine With A Tip Vane puff prot high speed jet-stream wind
Air curtain is formed diffusion formula wind turbine structure based on air curtain, and then efficiently utilizes wind-force.
Operation principle：Conventional wind machine either lift formula wind energy conversion system or resistance type wind energy conversion system, blade design is adopted mostly
Use flat design.The present invention is based on grooved surface drag reduction technologies, and efficiently using wind-force for pneumatic equipment bladess provides a kind of completely new answer
Use mode[8][9][10][11]。
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, it is clear that those skilled in the art
Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to include these these modifications and variations
Including modification and variation.
Bibliography：
[1] Zhu Yong can, Li Yangduan, Lou Yingqiang, Zhou Jiang, Sun Yuehua, influence and counter-measure [J] of the wind-power electricity generation to birds
Zoology magazine, 2016,51 (4):682-691
[2] J Rand, B Hoen, Thirty years of North American wind energy acceptance
research:What have we learned [J], Energy Research ＆ Social Science, 2017,29:
135-148
[3] pa Laski is fertile outstanding, vertical axis windmill principle and design [M], Shanghai science tech publishing house, and 2013
[4] Tian De, Diao Mingguang, Huang Shuncheng, Guo Fengxiang, Gao Hongzhong, Liu Shumin；The block mold of Concentrated Wind Energy Turbine
Wind tunnel experiment --- power generation contrast experiment.Journal of Agricultural Engineering, 1996, Vol. 12 No. 2
[5] Tian De, Wang Haikuan, Han Qiaoli, research and the progress [J] of Concentrated Wind Energy Turbine, agricultural engineering
Report, 2003,19 (s1):177-181
[6] Han Qiaoli, the experimental study [D] of large capacity Concentrated Wind Energy Turbine Model aerodynamic characteristic, Inner Mongol agricultural
University, 2006
[7] Han Qiaoli, Tian De, Wang Haikuan, Zhao Danping, black clouds tower Na, Concentrated Wind Energy Turbine improved model flow field with
Power out-put characteristic [J], Journal of Agricultural Engineering, 2009,25 (3):93-97
[8] Wang Jinjun, grooved surface turbulent flow drag reduction Review Study [J], BJ University of Aeronautics ＆ Astronautics's journal, 1998, VOL24, NO.1
[9] Wang Jinjun, Li Yachen, grooved surface dalta wing drag-reduction property experimental study [J], aerodynamics journal, and 2001,
19 (3) :283-287
[10] present Research of Ma Fuliang, Zeng Zhixiang, Gao Yimin, Liu Eryong, Xue Qunji, bionic surface drag reduction and progress [J]
Chinese Surface Engineering, 2016,29 (1): 7-15.
[11] numerical simulation study [J] hydrodynamicses of Huang Debin, Deng Xianhe, Wang Yangjun, grooved surface turbulent pipe-flow drag reduction are ground
Study carefully and progress 2005,20 (1):101-105
[12] Zhang Lan, Zheng Maosheng, Li Yusheng, Teng Haipeng, Hu Jun, Zhao Yuan, the dynamic characteristic of 5 blade drag type wind energy conversion system of vertical axis
[J] process engineering journals, 2015,15 (5):764-769
[13] Zhao Wei, Li Tao, vertical shaft resistance type windmill power calculation and Fluent numerical simulations [J] machineries and electronics
2010 (1) :68-71
[14] king's drought is auspicious, Zhan Min, Xu Haizhen, and bladeless fan is around ring exit analysis and optimization [J], fluid machinery, 2013,41 (5)
:19-21
Claims (9)
1. flow-guiding type wind turbine blade structure, it is characterised in that it includes：
Several diversion trenches are set on wind energy conversion system each blade, and diversion trench is an opened type groove structure, by U-shaped or V-type
Structure constitutes water conservancy diversion groove groove wall, and diversion trench concave surface faces to come wind direction, carrys out wind（Air-flow）Water conservancy diversion is poured in by the concave surface of diversion trench
It inside the groove body of slot, is influenced by diversion trench trough body structure, is flowed along diversion trench；
Diversion trench is set on pneumatic equipment bladess, and diversion trench setting direction is consistent with blade direction of rotation, for ease of description,
In the present invention pneumatic equipment bladess rotation direction be front, diversion trench groove body be equipped with head end, tail end, diversion trench head end direction with
The front of blade direction of rotation is same direction；
Diversion trench head end is equipped with wind scooper（Air scoop）；
Diversion trench tail end is unenclosed construction, wind-force（Air-flow）It is sprayed from tail end via after diversion trench；
It is equipped with puff prot in diversion trench tail end；
Guide trough structure of the present invention can be set on Blades For Horizontal Axis Wind, can also be set to vertical-shaft wind
On machine blade.
2. flow-guiding type wind turbine blade structure according to claim 1, structure be by blade 1, truss 2, diversion trench 3,
Wind scooper 4, puff prot 5 form.
3. flow-guiding type wind turbine blade structure according to claim 2, it is characterized in that blade 1 described in claim 2 is
The carrier of flow-guiding type wind turbine blade structure, truss 2, diversion trench 3, wind scooper 4, puff prot 5 are installed on blade 1.
4. flow-guiding type wind turbine blade structure according to claim 2, it is characterized in that truss 2 described in claim 2 is
The support construction of water conservancy diversion groove groove wall can utilize the cell wall of diversion trench to form lightweight blades knot with truss structure in the present invention
Structure improves blade strength using truss 2.
5. flow-guiding type wind turbine blade structure according to claim 2, it is characterized in that diversion trench 3 described in claim 2
Be a kind of trough body structure, diversion trench can be divided into groove body radial section by U-type groove structure or V-groove structure, no matter U-shaped water conservancy diversion
Slot or V-type diversion trench can find apparent channel openings end from radial section；It can will be led from diversion trench axial direction
Chute is divided into head end and tail end, in the present invention channel openings face windward, air-flow（Wind-force）Entered by channel openings face
Inside diversion trench, gush out from diversion trench tail end.
6. flow-guiding type wind turbine blade structure according to claim 2, it is characterized in that wind scooper 4 described in claim 2
It is a kind of air guide device, installation site is located at 1 front of blade, 3 stem of diversion trench.
7. flow-guiding type wind turbine blade structure according to claim 2, it is characterized in that puff prot 5 described in claim 2
Positioned at the tail portion of diversion trench 3, work as air-flow（Wind-force）Enter puff prot after gushing out from 3 tail portion of diversion trench, by puff prot by air-flow pressure
It is sprayed with special angle after contracting；On the one hand puff prot jet-stream wind can make blade obtain thrust, on the other hand when puff prot is set
It sets at the blade tip position of Blades For Horizontal Axis Wind, a sky is manufactured in wind turbine impeller downstream in the way of jet-stream wind
Gas hood substitutes diffusion formula wind turbine diffuser structure, to obtain the working efficiency of diffusion formula wind turbine with high-speed flow.
8. flow-guiding type wind turbine blade structure according to claim 1, it is characterized in that guide trough structure can be set to water
On flat axis pneumatic equipment bladess, it can also be set on vertical axis windmill structure.
9. flow-guiding type wind turbine blade structure according to claim 8, it is characterized in that when diversion trench is set to vertical shaft wind
When power machine, using V-type guide trough structure, entire row V-type can be obtained after several V-type guide trough structures are fixed using truss 2
Diversion trench；The obverse and reverse structure of V-type diversion trench is full symmetric, roughly the same on aeroperformance, works as vertical axis windmill
When installing this diversion trench blade, face of blade can efficiently use wind energy with reverse side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230835.4A CN108386314A (en) | 2018-03-20 | 2018-03-20 | Flow-guiding type wind turbine blade structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230835.4A CN108386314A (en) | 2018-03-20 | 2018-03-20 | Flow-guiding type wind turbine blade structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386314A true CN108386314A (en) | 2018-08-10 |
Family
ID=63067866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810230835.4A Pending CN108386314A (en) | 2018-03-20 | 2018-03-20 | Flow-guiding type wind turbine blade structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958659A (en) * | 2019-03-10 | 2019-07-02 | 江苏大学镇江流体工程装备技术研究院 | A kind of centrifugal pump with flow-guiding structure |
| CN111622892A (en) * | 2020-05-25 | 2020-09-04 | 芜湖辉林奥远自动化科技有限公司 | Internal rotation flow guide auxiliary impeller mechanism of wind driven generator |
-
2018
- 2018-03-20 CN CN201810230835.4A patent/CN108386314A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958659A (en) * | 2019-03-10 | 2019-07-02 | 江苏大学镇江流体工程装备技术研究院 | A kind of centrifugal pump with flow-guiding structure |
| CN109958659B (en) * | 2019-03-10 | 2021-04-02 | 江苏大学镇江流体工程装备技术研究院 | Centrifugal pump with flow guide structure |
| CN111622892A (en) * | 2020-05-25 | 2020-09-04 | 芜湖辉林奥远自动化科技有限公司 | Internal rotation flow guide auxiliary impeller mechanism of wind driven generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106050566B (en) | A kind of blunt trailing edge wind mill airfoil circulation control device and method | |
| CA2726204A1 (en) | Apparatus to increase fluid velocity in a fluid turbine | |
| CN110057204B (en) | Sea-tangle type air cooling tower | |
| RU2218477C1 (en) | Method to increase rotor blade efficiency of wind-driven electric plant | |
| CN103410656B (en) | Wind turbine blade with transition delay control on blade root portion | |
| CN108386314A (en) | Flow-guiding type wind turbine blade structure | |
| Zhu et al. | Investigation on aerodynamic characteristics of building augmented vertical axis wind turbine | |
| CN206694183U (en) | A kind of electric generator driven by weak wind | |
| CN2871902Y (en) | Guiding wind-power generator with wind-direction vertical shaft | |
| CN101509464B (en) | Passive jet method and device for enhancing vertical shaft wind mill performance | |
| WO2007071120A1 (en) | Wind-collecting device for a wind generator | |
| WO2022001691A1 (en) | Shark gill-shaped blade drag reduction structure for wind generator, blade, and manufacturing method | |
| CN109944737A (en) | A kind of channel gill membrane type blade of vertical axis wind turbine and production method | |
| CN102619678A (en) | Double-drum flow power turbine | |
| CN103629050B (en) | Pass through eddy flow aerogenerator | |
| CN109611268B (en) | Design optimization method for double-impeller horizontal shaft wind turbine | |
| CN201535228U (en) | Vertical shaft wind turbine driven to jet air | |
| CN102808737B (en) | Drag type narrow tube wind gathering power generation system | |
| CN201757029U (en) | System for generating power by recycling vented air | |
| CN109322783A (en) | A kind of porous type wind energy conversion system energizer | |
| Li et al. | Effect of building diffusers on aerodynamic performance for building augmented vertical axis wind turbine | |
| CN209340080U (en) | A kind of diaphragm starting resistance increasing type Blades For Horizontal Axis Wind | |
| CN203248313U (en) | Novel wind driven generator | |
| CN208364296U (en) | A kind of wind generator system | |
| WO2012159226A1 (en) | Fluid energy increasing and converting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180810 |