CN207145127U - Vortex generator and its pneumatic equipment bladess - Google Patents
Vortex generator and its pneumatic equipment bladess Download PDFInfo
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- CN207145127U CN207145127U CN201720997544.9U CN201720997544U CN207145127U CN 207145127 U CN207145127 U CN 207145127U CN 201720997544 U CN201720997544 U CN 201720997544U CN 207145127 U CN207145127 U CN 207145127U
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- vortex generator
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- vortex
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/306—Surface measures
- F05B2240/3062—Vortex generators
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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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Abstract
A kind of vortex generator for pneumatic equipment bladess, including multi-disc fin are the utility model is related to, the fin is the triangular plate piece that drift angle is fillet.The vortex generator that the utility model is related to can effectively postpone stall, improve the aeroperformance of blade, while can reduce due to caused wind turbine power generation amount loss after blade surface pollution, be transformed available for the increasing work(for having run pneumatic equipment bladess.
Description
Technical field
Wind-powered electricity generation field is the utility model is related to, more particularly to a kind of vortex for improving pneumatic equipment bladess aeroperformance occurs
Device and its overall plan.
Background technology
The single-machine capacity capacity requirement of large-scale modern wind turbine continues to increase, especially in terms of wind wheel wind sweeping area.Wind
Wheel wind sweeping area is bigger, and the applicable wind speed of wind energy conversion system is lower, and generated energy at low wind speeds is higher, but corresponding whole wind
The different part dimensions of power machine and wind energy conversion system are bigger.How to increase the wind energy absorptivity of blade is that raising wind energy conversion system core is competing
Strive the key issue of power.
Wind machine structure common at present is as shown in figure 1, including pylon 7 and wheel hub cabin 4, pylon passes through basis with ground
8 fix.Blade 9 is connected by bearing with wheel hub, and wind energy conversion system absorbs wind energy by blade, drives alternator shaft rotation to be sent out
Electricity, therefore the power output of wind energy conversion system is mainly determined by the performance of blade absorption wind energy.Middle part of blade 2 and blade tip 3 are mainly inhaled
Call prisoners in after letting them out for exercise can, the main function of root of blade 1 is subject to load and is attached blade and wheel hub.In terms of the direction of incoming, wind
Wheel is to turn clockwise, corresponding and blade inlet edge 5, trailing edge 6.Root of blade 1 absorb wind energy performance by wheel hub cabin 4 with
And stall separation easily occurs for the negative effect of this body structure its airflow on surface flowing, therefore the wind energy absorption efficiency of this part is universal
It is very low.
On the other hand from the point of view of, the increase loss of weight load shedding of blade dimensions is particularly important, and is considered from structure economics a lot
Wind wheel can use the very big aerofoil with blunt tail edge of the thickness of trailing edge 11 as shown in Figure 2 in the design.Aerofoil with blunt tail edge includes leading edge 10, tail
Edge 11, suction surface 16, pressure face 15, suction surface trailing edge 17 and pressure face trailing edge 18；Wherein leading edge 10 and the horizontal direction of trailing edge 11
Distance be chord length 13, chord length is represented with C；Suction surface trailing edge 17 and the distance of the vertical direction of pressure face trailing edge 18 are trailing edge thickness
12, trailing edge thickness is represented with L；The ratio of distance M (14 signified region) and chord length C on suction surface 16 and the vertical direction of pressure face 15
It is worth the relative thickness for aerofoil profile；Trailing edge thickness L and chord length C ratio is the trailing edge relative thickness of aerofoil profile.
The aerofoil with blunt tail edge of trailing edge relative thickness more than 5%, due to the obvious effect of " backward-facing step flow ", therefore the wing
The overall flow stability of type is relatively low, and the Karman vortex street of rule can be formed in aerofoil profile trailing edge, the flow stability of aerofoil profile it is very poor compared with
Easily there is stall flow separation, therefore also can be poor using the blade root part flow stability of aerofoil with blunt tail edge design,
There is flowing stall separation in leaf root part, aerodynamic noise also can further increase caused by blade stall always, it is difficult to meet high
The market demand of performance low noise blade.
Air-flow can be in an adherent coating of the attached formation in object plane border, referred to as boundary layer when airfoil surface flows.Side
Interlayer starts from the leading edge (or around preceding stationary point of material flows) of object plane, and the interior flowing with outside layer of layer is a kind of asymptotic pass
System, between the two without the line of demarcation of determination, it is boundary layer to be commonly defined as speed in layer and 1% place is differed with external speed
External boundary.Flow regime in boundary layer can be divided into laminar flow and turbulent flow, and transition position of the laminar flow to turbulent flow is referred to as " to turn to twist
Point ", this physical phenomenon are referred to as " flow transition ".
Air-flow is in aerofoil profile upper surface flow process, from flowing Bernoulli equation equation, it may appear that first speedup decompression, arrives
Up to after aerofoil peak, in the deceleration that can boost backward.In the boosting braking section of curved surface, the part kinetic energy of fluid will not only convert
For pressure potential energy, and the retardation of viscous force will also continue that its kinetic energy is lost, and this just makes the kinetic energy loss of fluid micellar
Increase, flow velocity reduces rapidly, and its boundary layer constantly thickens.When fluid flows to the certain point S ' of curved surface, close to object wall
The kinetic energy of fluid micellar is depleted that this segment fluid flow micelle just stagnates.And then the fluid micellar come also will equally stop
It is stagnant to get off, so that the fluid micellar being more and more stalled heap between object wall and main flow comes.At the same time, exist
After S ' points, " the separation for continuing rise and the tangential velocity for making segment fluid flow micelle being equal to zero, S ' points referred to as boundary layer of pressure
Point ", this physical phenomenon are referred to as " flow separation ".The vortex formed afterwards is separated, is constantly taken away by main flow, after object
Portion forms trailing vortex area.If a kind of mode can be used to increase energy in boundary layer, can increase fluid micellar overcome it is inverse
The ability of gradient acting is pressed, and then postpones stall separation.
In the wing tip position of aircraft, a kind of screw type air flow swirl motion can be formed, is referred to as " wingtip vortex ".The wing
The intensity in sharp whirlpool is higher, and energy is larger, if producing the wingtip vortex of this high-energy, the wing in the boundary layer of airfoil surface flowing
After the energy that sharp whirlpool carries mixes with the low-energy boundary layer air flowing of airfoil surface flow downstream, boundary layer is given energy transmission,
The boundary layer flow field that will make to be in adverse pressure gradient obtains additional-energy and can continue to be attached to blade surface so that separation position
Put compared to the stability for more posteriorly, adding airfoil surface flowing before.Position caused by wingtip vortex, it should close to boundary layer
It is preferable with the boundary region of External airflow field, the energy transmission being so more beneficial for inside and outside boundary layer.
The experience of aircraft wing is used for reference, is installed on the vortex generator of the winglet of the similar shark dorsal fin of aerofoil surface
(Vortex Generator, VG) can prevent the air-flow premature disengagement in aerofoil surface to improve stalling angle very well, for whirlpool
The patent of flow-generator delay aerofoil surface stall separation is appeared on US4175640A earliest.
However, from the point of view of the current existing vortex generator patent on wind blade, the design of vortex generator
Many irrational places, and the whirlpool described by partial monopoly on type structure, installation site, material and installation method be present
Flow-generator implementation process does not carry out strict verification experimental verification, and DeGrain occurs in actual application or goes out
The situation of existing counter productive.
In patent CN101680423B, the length dimension of single vortex generator band is not limited, due to wind wheel surface
The particularity of aerodynamic configuration, can be had difficulties in installation process, and due to the change of curved surface can produce vortex generator band to
The prestressing force of outer stripping, reduce the reliability of viscose glue.
In patent CN205478093U, the substrate material of vortex generator is stainless steel, and from wind wheel lightning protection angle, this is not
Feasible either has very big thunderbolt risk；The structure of vortex generator does not consider fin and substrate in the other patent
The transition of connection, local stress can be produced in the process of running, and then reduce the service life of part.
In patent CN103917445B, using " it is heavy that the soot dust granule of discoloration, dust, suspended particulate etc. are formed on blade
Product thing identifies the Disengagement zone of blade air, and the installation site of vortex generator is determined according to the Disengagement zone ", tied according to experiment
Fruit shows that vortex generator installation site is not the vortex generator installation site that is determined using this kind of mode near defiber
Not accurate enough and vortex generator effect is simultaneously bad, it should the installation of vortex generator is determined according to the aerodynamic configuration of wind wheel
Position.
Therefore, those skilled in the art is directed to developing a kind of vortex generator for pneumatic equipment bladess, can be effective
Ground improves the aeroperformance of pneumatic equipment bladess, reduces the aerodynamic noise of blade, while securely and reliably, be easy to workmen to install.
Utility model content
In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide one kind and is used for wind
The vortex generator of power machine blade, including at least a piece of fin, the fin are the triangular plate piece that drift angle is fillet.
Further, in addition to bottom plate, the backplate surface are vertically installed with multiple fins, and the fin passes through same
The relative bottom surface of the drift angle is fixedly connected with the bottom plate.
Further, each fin is set along axial symmetry parallel to each other, and the plate face of adjacent two fin is in
Angle is 8~25 degree.
Further, the leading edge of the bottom plate and/or trailing edge are provided with round-corner transition.
Further, the plate face up and down of the bottom plate is curved surface.
Further, the base length of the fin is 1.5~3.5 with the ratio of the height of the fin.
Further, the vortex generator is made using weatherability engineering plastics or composite.
Further, the vortex generator is produced using processing mode is integrally formed.
Further, the fin is provided with draft angle；
The utility model additionally provides a kind of pneumatic equipment bladess, and the blade is aerofoil with blunt tail edge, is set on the blade
There is vortex generator, the vortex generator includes at least a piece of fin, and the fin is the triangular plate piece that drift angle is fillet.
Further, the relative thickness of the root of blade aerofoil profile is 45%~85%, and the vortex generator is arranged at
The position of the root of blade chord length 15%~50%.Further, the fin height of the vortex generator be 20~
60mm。
Further, the relative thickness of the middle part of blade aerofoil profile is 30%~45%, and the vortex generator is arranged at
The position of the middle part of blade chord length 25%~40%.Further, the fin height of the vortex generator be 10~
30mm。
Further, the relative thickness of the blade tip aerofoil profile is less than 30%, and the vortex generator is arranged at described
The position of blade tip chord length 50%~80%.Further, the fin height of the vortex generator is 1.5~20mm.
Further, in addition to bottom plate, the backplate surface are vertically installed with multiple fins, and the fin passes through same
The relative bottom surface of the drift angle is fixedly connected with the bottom plate.
Further, each fin is set along axial symmetry parallel to each other, and the plate face of adjacent two fin is in
Angle is 8~25 degree.
Further, the leading edge of the bottom plate and/or trailing edge are provided with round-corner transition.
Further, the plate face up and down of the bottom plate is curved surface.
Further, the base length of the fin is 1.5~3.5 with the ratio of the height of the fin.
Further, the vortex generator is made using weatherability engineering plastics or composite.
Further, the vortex generator is produced using processing mode is integrally formed.
Further, the fin is provided with draft angle；
Further, multiple rows of vortex generator is provided with the position of blade different chord lengths.
The utility model additionally provides the installation method of the foregoing vortex generator with bottom plate, comprises the following steps：
Mark the installation site of vortex generator；
Polishing blade surface；
The coating sealing glue on vortex generator bottom plate；
Vortex generator is bonded, gap is left between the bottom plate of the adjacent vortex generator；
Joint filling seals.
Further, the sealing glue is the silicone sealant glue of the one-component of non-sagging denseness.
The utility model additionally provides a kind of clip arrangement for vortex generator positioning, including bayonet socket, the bayonet socket
Shape is engaged with least a portion chord length shape of above-mentioned pneumatic equipment bladess.
Technique effect
1. vortex generator of the present utility model can postpone ゜ of airfoil stall 5~10 or so, Airfoil Aerodynamic Performance 50% is improved
~200%, the aerofoil profile lifting capacity closer to leaf root part is bigger, and then can improve annual electricity generating capacity 1%~2% or so.
2. vortex generator of the present utility model can be used for operation blade increasing work(transformation, for low latitude air tightness wind field,
Low wind speed area unit and the with serious pollution unit lifting effect of blade surface are more preferable.
3. vortex generator of the present utility model can reduce the aerodynamic noise of blade.
4. vortex generator installation method of the present utility model can be positioned and installed to like product, installation positioned
Journey is accurately reliable, and installation effectiveness is high.
Design, concrete structure and caused technique effect of the present utility model are made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram of prior art wind machine；
Fig. 2 is the airfoil structure schematic diagram of prior art wind machine；
Fig. 3 is the bionic shape and its distressed structure schematic diagram of prior art wind machine fin；
Fig. 4 is the schematic shapes of the wind energy conversion system fin in a preferred embodiment of the present utility model；
Fig. 5 is that vortex generator is installed on the structural representation in aerofoil profile in Fig. 4 embodiments；
Fig. 6 is " wingtip vortex " schematic diagram caused by vortex generator afterbody in Fig. 4 embodiments；
Fig. 7 is velocity variations schematic diagram in vortex generator afterbody boundary layer in Fig. 4 embodiments；
Fig. 8 is that delay stall design sketch occurs for vortex in Fig. 4 embodiments；
Fig. 9 is that vortex generator aeroperformance lifts design sketch in Fig. 4 embodiments；
Figure 10 is vortex generator overall structure rearview in Fig. 4 embodiments；
Figure 11 is vortex generator overall structure side view in Fig. 4 embodiments；
Figure 12 is vortex generator overall structure top view in Fig. 4 embodiments；
Figure 13 is vortex generator overall structure axonometric drawing in Fig. 4 embodiments；
Figure 14 is vortex generator bonded structure schematic diagram in Fig. 4 embodiments；
Figure 15 is vortex generator leading edge bonded structure schematic diagram in Fig. 4 embodiments；
Figure 16 is vortex generator trailing edge bonded structure schematic diagram in Fig. 4 embodiments；
Figure 17 is that vortex generator is bonded interstitial structure schematic diagram in Fig. 4 embodiments；
Figure 18 is installation positioning used in auxiliary installation vortex generator in another preferred embodiment of the present utility model
Clamp schematic diagram；
Figure 19 is that vortex generator is arranged on the design sketch on wind energy conversion system in Figure 18 embodiments.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise " are based on orientation shown in the drawings or position relationship, merely to just
In description the utility model and simplified description, rather than indicate or imply that signified device or element must be with specifically square
Position, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it
" under " can directly be contacted including the first and second features, it is not directly to contact but lead to that can also include the first and second features
The other characterisation contact crossed between them.Moreover, fisrt feature second feature " on ", " top " and " above " include the
One feature is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First is special
Sign second feature " under ", " lower section " and " below " including fisrt feature directly over second feature and oblique upper, or only
Represent that fisrt feature level height is less than second feature.
Embodiment 1
As shown in figure 3, traditional vortex generator fin 22 can be obtained based on bionical simplification, wherein 19 be fin leading edge
(fin windward side), 20 be fin top, 21 be fin trailing edge (fin lee face).From processing technology convenience and structural reliability
Consider fin being deformed into 23, according to what is provided in the patent document of prior art, existing vortex generator fin shapes are such as
24th, shown in 25,26 and 27.From resistance and consideration convenient for production is reduced, present embodiments provide a kind of vortex generator and carry
The pneumatic equipment bladess of vortex generator, wherein, the fin shapes of vortex generator are as shown in figure 4, drift angle by the top of fin 28
Make arc-shaped and conveniently reduce air-flow local detachment reduction resistance.
Aerofoil profiles profile used in wind wheel blade is similar to shark fish body in the present embodiment, the main work of shark dorsal fin
With being to force current to turn to twist in advance, switching to turbulent flow from laminar flow, the stall of delay current reduces resistance caused by current stall, while
Swimming posture can easily be adjusted.Consider from bionical angle, also design and similar send out with the vortex of shark dorsal fin in aerofoil profile upper surface
Raw device, to improve the flow stability of aerofoil profile, reduce resistance.Because the Re of fish swimming runs the small quantity of Re than aerofoil profile
Level, therefore boundary layer thickness also poor an order of magnitude, the size of dorsal fin are also so great that more.From bionical angle, determined according to dorsal fin
Vortex generator fin size size and installation site as shown in figure 5, wherein, 29 be the positions of fin installation.To wind wheel leaf
The boundary layer momentum integral of piece aerofoil profile calculates, suitable for the vortex generator fin 64 in more than 1MW wind wheel blade aerofoil profile
Highly (explained with accompanying drawing 11, the height dimension accurate definition of fin is：The peak of the circular arc of fin top 58 and bottom plate following table
Between the circular arc minimum point of face 56, the distance of in the vertical direction) between 1.5~100mm.The vortex in the region of root of blade 1/3
Generator is preferably dimensioned to be 20~60mm, uses 50mm in the present embodiment, and the vortex generator size in the region of middle part of blade 1/3 is excellent
To elect 10~30mm as, use 20mm in the present embodiment, the vortex generator in the region of blade tip 1/3 is preferably dimensioned to be 1.5~
20mm, 10mm is used in the present embodiment.
Fig. 6 is " wingtip vortex " schematic diagram caused by vortex generator afterbody, and 32 be the direction of flow of air-flow, and 30 be fin,
31 be fin afterbody caused by regular spirals come off vortex structure.Blade installs the airfoil surface border before and after vortex generator additional
As shown in fig. 7, wherein fin 33 is arranged vertically on blade 36,34 (dotted lines) are vortexed VELOCITY DISTRIBUTION isogram in layer to install additional
Speed molded line distribution after generator, 35 (solid lines) are distributed for the speed molded line of clean blade；Increase after installing vortex generator additional
Energy in boundary layer so that the velocity amplitude in boundary layer is bigger, i.e., the mistake of blade can be postponed by installing fin additional in blade surface
Fast flow separation.
According to above to the theory analysis and test result of fin, Fig. 8 is to install the delay stall gas after vortex generator additional
Dynamic data comparison.The relative thickness of blade root aerofoil profile 1 50%~60%, the trailing edge relative thickness of blade root aerofoil profile 1 15%~
25%；The relative thickness of blade root aerofoil profile 2 is 40%~50%, and the trailing edge relative thickness of blade root aerofoil profile 2 is 5%~10%.37 are
Stall point corresponding to blade root aerofoil profile 1,38 be its corresponding angle of attack size, and 44 be to be corresponded to after blade root aerofoil profile 1 installs vortex generator additional
Stall point, 42 be its corresponding angle of attack size；39 be stall point corresponding to blade root aerofoil profile 2, and 40 be its corresponding angle of attack size,
43 be that blade root aerofoil profile 2 installs corresponding stall point after vortex generator additional, and 41 be its corresponding angle of attack size.According to data in figure point
Analysis understands, installs the stalling angle of blade root aerofoil profile after vortex generator additional and can improve more than 10 °, lift coefficient can improve 50% with
On.
Fig. 9 furthermore present the blade root Airfoil Aerodynamic Performance lifting data after dress vortex generator, and 45 be blade root aerofoil profile 1
Maximum lift-drag ratio point, 46 be blade root aerofoil profile 1 install additional vortex generator after maximum lift-drag ratio point, install additional vortex generator rear wing
The lift-drag ratio of type can improve 150% or so, can greatly lift the aeroperformance of blade root aerofoil profile.
For wind mill wind wheel actual motion under large natural environment, the dust adhesion on wind wheel surface, weathering etc. can increase aerofoil profile
Roughness causes blade to shift to an earlier date stall, and then reduces the generating performance of wind wheel, according to analysis above：Installing vortex generator additional can
Postpone stall separation, stall separation situation can be improved by installing turbine generator additional after blade surface is contaminated, keep blade very
Good aeroperformance, further illustrate that vortex generator can be used for often contaminated blade aerodynamic performance boost transformation.
According to calculating and test analysis, boundary layer thickness ratio of the vortex generator highly with mount point is 0.75~0.85
Between it is optimal between 1.2~1.4；From theory analysis and test experiments before, mount point of the vortex generator in aerofoil profile is leaned on
The turning point delay stall of nearly aerofoil profile edge 10 is better, for aerofoil profile (blade root of the relative thickness 45%~85%
The region of portion 1/3), the position of turning point is between the 15%~50% of chord length；For aerofoil profile of the relative thickness 30%~45%
(region of middle part of blade 1/3), the position of turning point is between the 25%~40% of chord length；It is less than 30% wing for relative thickness
Type (region of blade tip 1/3), the lift-rising delay stall DeGrain of vortex generator.Except delay stall improves aeroperformance
Outside, the execution that vortex generator produces rule body-shedding vortex for aerofoil profile trailing edge is preferable, therefore is less than for relative thickness
35% aerofoil profile, the installation site of vortex generator compare rearward, between the 50%~80% of chord length, can reduce and pneumatically make an uproar
Sound.
In the present embodiment, vortex generator has setting on each position of pneumatic equipment bladess, wherein, bucket root zone
Domain, blade relative thickness about 60%, at the 35% of chord length, it is attached that vortex generator is arranged at the turning point for the position of turning point
Closely；Middle part of blade region, blade relative thickness about 35%, at the 30% of chord length, vortex generator is set for the position of turning point
Near the turning point；And it is smaller for blade tip region, vane airfoil profile relative thickness, about 20%, now vortex generation
Device sets inclined trailing edge, about 60% position of chord length, the noise that can be effectively reduced in fan operation.
The action effect of vortex generator and fin height and installation site relation are larger, generally for the mistake that acquisition is larger
The lift-drag ratio coefficient of the fast angle of attack and Geng Gao, vortex generator installation site can be as close to aerofoil profile leading edges.In the utility model
Other preferred embodiments in, for region of the wind wheel blade chord length more than more than 4m, the action effect of single vortex generator
The possible unobvious of bounded delay stall effect, can further improve stalling angle using multiple rows of vortex generator.It is worth noting
, additionally increased resistance can be more more than single vortex generator, it is necessary to come from the lifting of lift-drag ratio for multiple rows of vortex generator
Whether economical weigh.
As shown in figures 10-13, consider from bonding is convenient, bonding bottom plate 48 is added in the bottom of fin 47；Because fin is pacified
Holding position is that the aerodynamic configuration of wind wheel blade is all throughout unfixed cambered surface on the surface of wind wheel blade, therefore is bonded bottom
Plate is not flat board but with cambered curved surface 56；In order to ensure the good flow transition in the upper surface 55 of bottom plate 48, by bottom plate
Upper surface also increases by a radian.In order to ensure that " wingtip vortex " caused by fin maximumlly plays energy exchange inside and outside boundary layer
Effect, fin is arranged to "eight" shape, wherein 63 be bottom plate leading edge towards aerofoil profile leading edge, 65 be bottom plate trailing edge towards aerofoil profile tail
Edge；Because fin is perpendicular to backplate surface setting, therefore fin plate face angle is the angle 61 of fin, between 8~25 degree.
If angle is too small, " wingtip vortex " energy is relatively low caused by fin, postpones stall DeGrain；Angle 61 is excessive, can produce compared with
More additional drags influences final aeroperformance lifting, increases the aerodynamic loading of blade.Length (the i.e. bottom plate leading edge 53 of fin
And the distance of bottom plate trailing edge 54) and the relation of fin height (i.e. fin top to distance between fin base) can also influence the " wing
The energy size in sharp whirlpool ", too small " wingtip vortex " energy of length to height ratio is less than normal, and the excessive caused additional drag of length to height ratio is larger, fin
Length to height ratio is preferably generally 1.5~3.5, used in the present embodiment length to height ratio for 2.2 fin.
Consider there is ultraviolet, soda acid (containing in rainwater), rainwater from the weatherability of the working environment of vortex generator
Deng, and require that working life is kept for 20 years vortex generator always under large natural environment, therefore selectable vortex generator
Rapidoprint is weatherability engineering plastics or composite.
According to the particularity of fin installation site, the material of vortex generator meets weatherability requirement.Vortex generator can
Produced from the integration of the modes such as priming by vacuum, injection molding, also can be by fin and bottom plate separate machined again using bonding, welding
Mode produce.In order to facilitate production, the generation of reduction additional drag and structural stability：Fin sets certain draft angle 51；
In order to reduce the resistance of vortex generator, bottom plate leading edge 53, bottom plate trailing edge 54 are provided with round-corner transition；Fin top 58 is provided with
Round-corner transition；Fin lee face has certain inclination angle 57.
Vortex generator adhesive effect is as shown in figure 14, and 66 be the viscose glue of bottom plate leading edge 63, and 68 be the viscose glue of bottom plate trailing edge 65.
Bottom plate leading edge viscose glue 66 is as shown in figure 15, it is desirable to which leading edge viscose glue 69 is smoothly transitted with bottom plate leading edge 70.Bottom plate trailing edge viscose glue
68 is as shown in figure 16, it is desirable to which trailing edge viscose glue 73 carries out rounding off with bottom plate trailing edge 65.In view of temperature change, actual motion work
Vortex generator, which occurs, in journey expands with heat and contract with cold, and vortex generator bonding setting gap 74 is as shown in figure 17, and bonding gap needs to use
Bonded adhesives carries out joint filling sealing.The mono-component organic silicone that vortex generator is Nian Jie with blade surface to can be used non-sagging denseness is close
Sealing, bonded adhesives.
Embodiment 2
Present embodiments provide a kind of installation method of the vortex generator of the blade for operation of not installing also.
Installation prepares：More than 5 DEG C of installation environment temperature requirement, the higher adhesive effect to bonded adhesives of temperature are better；Prepare
The tangential locating clamp plate 76 of vortex generator as shown in figure 18, require that the material of clamp 76 is aluminium in terms of intensity and light weight, 77
For aerofoil profile trailing edge position location, notice that suitably reserving 10~20mm at trailing edge positioning 77 highly increases reliability of positioning；Water-based note
Number pen, 800 mesh sand paper, the long tape measures of 50m, powder hopper or ink fountain scriber, industrial alcohol.
Installation process：
1) leaf position is suitably adjusted so that blade suction surface (corresponding to airfoil suction side 16) is upward；
2) vortex generator is measured in the position in length of blade direction using tape measure, then measured with trailing edge locating clamp plate tangential
Position, the edge line that vortex generator leading edge positions is pulled out with fine rule, then the width of vortex generator is installed and draws other one
Straight line, pasted with paper self-adhesive tape along edge line, form polishing region；
3) installation region is polished using 800 mesh sand paper, ensures the smooth cleaning of bonding plane.Before polishing, if finding
Blade surface has greasy dirt, then needs first to be cleaned and dried with organic solvent；Forbid to touch the bonding polished with hand during polishing
Face, to prevent from leaving spot on bonding plane；
4) it is uniformly coated with sealing bonded adhesives on vortex generator bottom plate；
5) by vortex generator since start position, blade surface is fixed on along four point attachment, is sent out when fixed from vortex
Extrusion bubble is pressed to surrounding in the middle part of raw device, and firmly presses vortex generator 5 seconds, it is determined that bonding is firm；
6) installation of all vortex generators is similarly completed in order, before noticing that the leading edge of vortex generator points to blade
Edge；
7) require that place the corresponding time enables blade again according to the hardening time of sealing viscose glue after installation.
The final effect figure that vortex generator is installed on pneumatic equipment bladess is as shown in figure 19, and 78 send out for mounted vortex
Raw device band.
Embodiment 3
Present embodiments provide a kind of method that vortex generator is installed on the pneumatic equipment bladess for operation of having installed.
Installation prepares：Maintenance platform or hanging basket system are a set of, high-rise working safety belt, safety rope and safety cap, intercommunication
Machine；The tangential locating clamp plate of vortex generator；Water-based marking pen, 800 mesh sand paper, the long tape measures of 50m, powder hopper or ink fountain scriber, work
Industry alcohol；Environment temperature is higher than 8 DEG C, and wind field wind speed should be less than 8 meter per seconds, and the weather for the poor visibilities such as mist of raining, have can not all enter
Row installment work.
Installation process：
1) impeller is locked and confirmed with crewmember, and is monitored and all gone well, and cabin safeguards and opened that jerk has taken,
Driftage is turned off；
2) site operation safe range delimited, and draws warning line, tree warning board, no admittance for unrelated person；
3) before formally using hanging basket, suspender belt, suspension ring, steel wire rope are repeatedly monitored, it is ensured that excellent；
4) vortex generator is measured in the position in length of blade direction using tape measure, then measured with trailing edge locating clamp plate tangential
Position, the edge line that vortex generator leading edge positions is pulled out with fine rule, then the width of vortex generator is installed and draws other one
Straight line, pasted with paper self-adhesive tape along edge line, form polishing region；
5) installation region is polished using 800 mesh sand paper, ensures the smooth cleaning of bonding plane.Before polishing, if finding
Blade surface has greasy dirt, then needs first to be cleaned and dried with organic solvent；Forbid to touch the bonding polished with hand during polishing
Face, to prevent from leaving spot on bonding plane；
6) it is uniformly coated with sealing bonded adhesives on vortex generator bottom plate；
7) by vortex generator since start position, blade surface is fixed on along four point attachment, is sent out when fixed from vortex
Extrusion bubble is pressed to surrounding in the middle part of raw device, and firmly presses vortex generator 5 seconds, it is determined that bonding is firm；
8) installation of all vortex generators is similarly completed in order, before noticing that the leading edge of vortex generator points to blade
Edge；
9) required after installation according to the hardening time of sealing viscose glue, the fan parking corresponding time is enabled into leaf again
Piece；
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member makes many modifications and variations without creative work can according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (12)
1. a kind of vortex generator for pneumatic equipment bladess, it is characterised in that including at least a piece of fin, the fin is top
Angle is the triangular plate piece of fillet.
2. vortex generator as claimed in claim 1, it is characterised in that be also vertically arranged including bottom plate, the backplate surface
There are multiple fins, the fin with the relative bottom surface of the drift angle with the bottom plate by being fixedly connected.
3. vortex generator as claimed in claim 2, it is characterised in that each fin is set along axial symmetry parallel to each other
Put, the plate face of adjacent two fin is in that angle is 8~25 degree.
4. vortex generator as claimed in claim 2, it is characterised in that the leading edge and/or trailing edge of the bottom plate are provided with fillet
Transition.
5. vortex generator as claimed in claim 2, it is characterised in that the plate face up and down of the bottom plate is curved surface.
6. vortex generator as claimed in claim 1, it is characterised in that height of the base length of the fin with the fin
The ratio of degree is 1.5~3.5.
7. vortex generator as claimed in claim 1, it is characterised in that the vortex generator uses weatherability engineering plastics
Or composite is made.
8. a kind of pneumatic equipment bladess, it is characterised in that the blade is aerofoil with blunt tail edge, and vortex is provided with the blade
Device, the vortex generator include at least a piece of fin, and the fin is the triangular plate piece that drift angle is fillet.
9. pneumatic equipment bladess as claimed in claim 8, it is characterised in that the relative thickness of the root of blade aerofoil profile is 45%
~85%, the vortex generator is arranged at the position of the root of blade chord length 15%~50%.
10. pneumatic equipment bladess as claimed in claim 8, it is characterised in that the relative thickness of the middle part of blade aerofoil profile is
30%~45%, the vortex generator is arranged at the position of the middle part of blade chord length 25%~40%.
11. pneumatic equipment bladess as claimed in claim 8, it is characterised in that the relative thickness of the blade tip aerofoil profile is less than
30%, the vortex generator is arranged at the position of the blade tip chord length 50%~80%.
12. pneumatic equipment bladess as claimed in claim 8, it is characterised in that be provided with the position of blade different chord lengths multiple rows of
The vortex generator.
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| CN201720997544.9U CN207145127U (en) | 2017-08-10 | 2017-08-10 | Vortex generator and its pneumatic equipment bladess |
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| CN201720997544.9U CN207145127U (en) | 2017-08-10 | 2017-08-10 | Vortex generator and its pneumatic equipment bladess |
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| CN207145127U true CN207145127U (en) | 2018-03-27 |
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| CN108953074A (en) * | 2018-08-14 | 2018-12-07 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade vortex generator |
| CN109386424A (en) * | 2017-08-10 | 2019-02-26 | 上海电气风电集团有限公司 | Vortex generator, pneumatic equipment bladess and its installation method with vortex generator |
| CN109555452A (en) * | 2019-01-16 | 2019-04-02 | 盈普声学（惠州）有限公司 | Shutter and its blade |
| CN110131096A (en) * | 2019-05-28 | 2019-08-16 | 上海电气风电集团有限公司 | A kind of new-type vortex generator for wind electricity blade |
| CN110206680A (en) * | 2019-06-05 | 2019-09-06 | 上海电气风电集团有限公司 | A kind of vortex generator, fan blade and its manufacturing method |
| CN110392782A (en) * | 2017-02-15 | 2019-10-29 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392782A (en) * | 2017-02-15 | 2019-10-29 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
| CN110392782B (en) * | 2017-02-15 | 2022-04-26 | 西门子歌美飒可再生能源公司 | Building structure with means for reducing induced vibrations |
| CN109386424A (en) * | 2017-08-10 | 2019-02-26 | 上海电气风电集团有限公司 | Vortex generator, pneumatic equipment bladess and its installation method with vortex generator |
| CN108953074A (en) * | 2018-08-14 | 2018-12-07 | 株洲时代新材料科技股份有限公司 | A kind of wind electricity blade vortex generator |
| CN109555452A (en) * | 2019-01-16 | 2019-04-02 | 盈普声学（惠州）有限公司 | Shutter and its blade |
| CN110131096A (en) * | 2019-05-28 | 2019-08-16 | 上海电气风电集团有限公司 | A kind of new-type vortex generator for wind electricity blade |
| CN110206680A (en) * | 2019-06-05 | 2019-09-06 | 上海电气风电集团有限公司 | A kind of vortex generator, fan blade and its manufacturing method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200241 Dongchuan Road, Shanghai, No. 555, building No. 8, floor, floor, No. Patentee after: Shanghai Electric Wind Power Group Co., Ltd Address before: 200233 Caobao Road, Xuhui District, Shanghai, No. 115 Patentee before: Shanghai Electric Wind Power Group Co., Ltd. |