CN103016262B - Horizontal axis wind turbine blade - Google Patents
Horizontal axis wind turbine blade Download PDFInfo
- Publication number
- CN103016262B CN103016262B CN201310004621.2A CN201310004621A CN103016262B CN 103016262 B CN103016262 B CN 103016262B CN 201310004621 A CN201310004621 A CN 201310004621A CN 103016262 B CN103016262 B CN 103016262B
- Authority
- CN
- China
- Prior art keywords
- bone
- blade
- thin
- point
- wind
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a horizontal axis wind turbine blade, belongs to the field of wind power equipment, and particularly relates to a blade for a horizontal axis wind turbine. The blade comprises a main keel (1), sub keels (6), fine keels (2), skin films (3) and a rotating shaft (4), wherein a plurality of sub keels (6) are arranged at the external end part and on one side of the main keel (1); the fine keels (2) are obliquely arranged and fixedly mounted on the main keel (1) and the sub keels (6) in parallel; the elastic skin films (3) are arranged in gaps between every two fine keels (2) in an up-and-down manner to connect the fine keels (2) so as to form a plurality of arc surfaces inclined to one sides of the main keel (1) and the sub keels (6); the arc surfaces formed by the main keel (1), the sub keels (6) and the fine keels (2) are finned surfaces (5); projections (7) formed by two intersected arc finned surfaces are arranged at the root parts of the blades; and with the projections (7) as starting points, the lengths of the fine keels (2) mounted in an up-and-down manner in a direction of the main keel (1) are gradually decreased. The horizontal axis wind turbine blade provided by the invention has the advantages of high rotating efficiency, small wind resistance, good force transmission effect, uneasiness for damaging, long service life and the like.
Description
Technical field
Horizontal shaft wind-driven generator vane, belongs to wind power plant field, is specifically related to the blade of using on a kind of horizontal axis wind-driven generator.
Background technique
At present, wind power plant mainly divides two kinds: one is horizontal axis wind-driven generator, and the advantage of this wind-driven generator is that efficiency is higher, and cost is low.What horizontal axis wind-driven generator mainly adopted now is that entirety is all to adopt this blade taking rigidity as the blade, particularly large-scale horizontal axis wind-driven generator of main straight properller formula.In the time of wind blade, the inclined-plane of blade can produce the power rotating forward, the linear increase of moment that this power axis of rotation produces to vane tip, and this is also unique power that this blade produces.When blade inclined-plane becomes 45 degree inclination angle with the plane of rotation, conversion ratio that wind energy transformation is kinetic energy is the highest approaches 50%, and still, inclination angle is larger, and when blade rotation, resistance is also larger, by formula G=1/2CS ρ ω
2r
2find out that G (resistance) is directly proportional to C (resistance coefficient), S (wind-exposuring area), with ω
2(rotational angular velocity square) is directly proportional, with R
2(length of blade square) is directly proportional, and ρ is air density, and as can be seen here, the speed of the larger resistance increment in angle of inclination is very huge.
Because C (resistance coefficient) and S (wind-exposuring area) increase along with the increase at tilt angle, G (resistance) and ω
2(blade rotation angular velocity square) and R
2(length of blade square) is also the relation being directly proportional, and what present with the increase of ω (rotational angular velocity), R (length of blade) is quadratic relationship, in other words the resistance that blade is subject to wind from root to end is to accelerate to become large, therefore, what the inclination angle on blade inclined-plane can only be accelerated from root to end diminishes, and power-conversion rate is also more and more less certainly, in order to reduce resistance, it is more and more thinner that blade can only do from root to end, more and more narrow.According to moment formula M=FR, M (the power moment of certain some wind energy transformation on blade) is proportional with R (on blade, certain point is apart from the distance of rotating shaft), people wish from the root of blade increasing to the width of end blade very much, the power moment producing just can be larger, but, find out from resistance formula above, the speed of resistance increment can be larger like this.So blade can only be more and more narrow from root to end, the blade of the straight propeller type therefore now generally promoting the use becomes the efficiency of kinetic energy very low wind energy transformation.
The fatal shortcoming that the blade of existing wind-driven generator also exists is, present blade is that hollow integral rigidity is constructed, section is again that abnormal complex (is generally the plan view shape of fish, this is effective by giving a dinner for a visitor from afar, and the little requirement of rotational resistance determines), in the time that wind is very little, blade can not twist, the end wind energy transformation rate of blade is very low, and the moment of rotation of generation is very little, and blade can not rotate.In the time that strong wind blows blade, blade can be subject to very large moment of torsion and moment of flexure, but blade is special-shaped, is rigidity, not allow flexible wrench deformation, so the most easily torn by fatigue at blade edge of a knife thinnest part, because blade is rigid unitary structure, the thickness of blade is very thick, add supporting structure, so weight is very large, in the time of blade rotation, its huge centripetal force can not produce onward impulse and become on the contrary burden.Why promoted widely, only because of its environmental protection, utilized the energy of inexhaustible wind.
The second wind power plant is vertical axis aerogenerator, this kind of blade of wind-driven generator is also rigidity, its form is diversified, but change ten thousand times without leaving the original aim or stand, it rotates the principle of generating electricity, mainly to the different resistance differences that form of the resistance of wind by blade tow sides, the difference of two resistances is exactly the power rotating, although this wind-driven generator structure is simple, manufacture difficulty is low, but cost is not low, and inefficiency, therefore, this wind-driven generator utilization ratio is low, it is poor to promote, and development potentiality is little.
In addition, also there are the several of other in the blade of horizontal axis wind-driven generator, their variation is mainly manifested in: the variation of the quantity of blade, the variation of blade width, blade section tortuosity and the middle and end increase support at blade, for blade end can be more roomy, the outer end between two blades having has added again blade, in order to increase the pressure of wind to blade on supporting, the end at blade having has added a funnel shaped cylinder, etc.Even if ever-changing, but the principle that it obtains onward impulse is the same, all because wind has produced the power rotating to the blade tilting, the variation of width on blade, the support increasing, the cylinder increasing, the power that blade increasing in support etc. increases is also little, because they are all rigidity, stressed is inflexible, they have increased very large resistance simultaneously, very large weight, unreasonable structure, dangerous, cost is high, various factors integrates analysis, their generating efficiency is high not as good as the generator of common propeller type blade, so, and be not suitable for large-scale popularization.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of resistance little, rotational velocity is fast, efficiency is high, wind energy transformation efficiency is high, the horizontal shaft wind-driven generator vane of long service life.
The technical solution adopted for the present invention to solve the technical problems is: this horizontal shaft wind-driven generator vane, is characterized in that: comprise main bone, point bone, thin bone, epithelium and rotating shaft; In main bone outer end and a side many points of bones are set; Thin bone dip-parallel is arranged and is fixedly mounted on main bone and point bone, and the upper and lower resilient epithelium in gap between two thin bones is connected, and forms multiple cambered surfaces to main bone and point bone lopsidedness, by main bone, point bone and thin osteoplastic cambered surface, is exactly finned surface; There are two arc finned surfaces to intersect the projection forming at root of blade, the length of the thin bone of high spot and thickness maximum, taking projection as starting point, the length of arranging up and down the thin bone of installation along the main bone shape setting that all tapers off, forms cambered surface.This kind of blade be mainly round " the end acceleration effect " of " swing dynamic Theory ", " funnel acceleration effect " and design and creation; " swing dynamic Theory " is according to the flight to bird for many years, and moving about of fish summed up out.
Described main bone arranges one, is hollow cylindrical structural, and main bone the inner is fixedly mounted on rotating shaft excircle, and main bone front is straight shape from root to length of blade 1/2 place, and from 1/2 to end and point bone photo even bending gradually, and bending radius diminishes gradually; Main bone side is to become gradually curved from root to blade end, main bone is tapered from root to end, wall thickness is attenuation gradually, in the time of wind blade, under the drive of thin bone and point bone, main ostosis twisting, in the time of blade rotation, main bone to antecurvature moving, produces centripetal moment, and centripetal moment is reached to rotating shaft under the effect of the centripetal force of thin bone and point bone.Main bone generally adopts glass fibre reinforced plastics and carbon fiber composite material to make, and the columnar structural form of main bone has determined that it possesses the antitorque ability of good bending resistance, be also not easy to damage under torsion effect curved being subject to that be subject to repeatedly, thus the working life of having improved blade.The projection of root of blade is that the finned surface of two arcs intersects formation, thin bone is herein the longest the thickest in all thin bones, just as wind is divided into two strands by one ridge, with the multiple arc finned surfaces of blade end respond to and cooperate with each other across a great distance generation " funneling effect " and by wind respectively concentrate accelerate, thereby increase the pressure of wind to blade, increased the moment of rotation of blade.
A described point bone is hollow cylindrical structure, and end is solid needle-like tip, and root and main bone photo connect, dividing bone front is to become gradually curved from root to end, bending radius diminishes gradually, and the diameter of point bone hollow cylinder is tapered from root to end, and wall thickness is attenuation gradually; Divide the autonomous bone end of bone to arrange many to a side, a point bone spacing for autonomous bone end to side setting becomes greatly gradually, point bone diameter chap gradually, and point bone length is elongated gradually; In the time of wind blade, point bone twists under thin bone drives, in the time of blade rotation, divide bone in sense of rotation, to become streamlined with thin osteoplastic finned surface, divide bone to move to antecurvature under the effect of thin bone and self centripetal force, form centripetal force moment of flexure, and by main bone, centripetal moment is reached to rotating shaft.Divide bone to adopt equally the composite material of glass fibre reinforced plastics and carbon fiber to make, the structural form of point bone drum type has determined that it possesses the good curved ability of being turned round that is subject to, be also not easy to damage under torsion effect curved being subject to that be subject to repeatedly, thus the working life of having improved blade.
Described thin bone is hollow wedge-shaped structure, and thin bone dip-parallel is fixedly mounted on main bone and point bone one side, and the thickness of the thin bone that same row are installed reduces and reduces with main bone and point bone external diameter, and thin bone width reduces with the minimizing of thickness; Thin bone is more and more less to tip thickness from fixed end, end forms solid cutter shape tip, the wall thickness self-retaining end of thin bone is also more and more thinner to tip, between two thin bones, there is very narrow together gap, the flexible epithelium of one deck that has up and down in gap is connected, in the time of wind blade, it is large that the gap between two thin bones becomes, and blade area increases; In the time of wind blade, finned surface can tilt, the arc shaped surface that formation can concentrate the funnel-like of accelerating to be obliquely installed wind.The wall thickness of thin bone is very thin, very light weight, and thin bone is maximum material that this kind of blade used, so the quality of whole blade is just little.In the time of wind blade, the finned surface that arc tilts is concentrated wind to accelerate, and just as fluid is accelerated by funnel, so be again " funnel acceleration effect ", has increased the pressure of wind to blade, thereby has improved the utilization ratio of wind; In the time of blade rotation, the thin bone of every a slice on blade, each point of bone all can produce centripetal force, because thin bone divides the main bone of bone special Placement, the thin influential point of bone divides bone to produce centripetal force moment of flexure to the main bone of fixing it, and this moment of flexure is passed to main bone or point bone of fixing it, in like manner, point bone thin bone can be passed to his moment again and the moment of own generation is passed to main bone again, and main bone is passed to rotating shaft again; According to centripetal force formula, F=m ω
2r moment formula M=m ω
2rLn finds out that the moment of dividing bone to produce from root to the thin bone of end of blade is to accelerate to increase, because R and Ln are increasing, Here it is " end acceleration effect ", also find out from two formula: centripetal moment becomes quadratic relationship with rotational angular velocity, the centripetal moment that blade rotation increases sooner in other words can become the increase of quadratic relationship.It is worth mentioning that, there are not above two kinds of effects in present horizontal shaft wind-driven generator vane, and centripetal force is burden just, can not do work.
The upper and lower both side surface in gap between two described thin bones pastes one deck epithelium, and epithelium is elastomeric, along with the gap between two thin bones becomes large and is stretched, increases the area that blade is given a dinner for a visitor from afar; By epithelium, the thin bone being arranged in parallel is connected as one, between every two adjacent thin bones, forms resilient connection by epithelium.Epithelium is elastomeric, can not affect main bone and divide cyrtosis twisting.
Projection at root of blade is intersected and is formed by the finned surface of two inclination arcs.
Compared with prior art, the beneficial effect that the present invention has is:
1, make full use of " the funnel acceleration effect " and " end acceleration effect " of bionics " swing dynamic Theory ", designed a kind of blade being formed by main bone, point bone and the thin special connection structural form of bone.Increase the active force of wind to blade, allow centripetal force do work.The many points of bones and the thin osteoplastic finned surface that on main bone, arrange, just as the wing that the feather of bird is combined into, resistance is little, and the blade end area of giving a dinner for a visitor from afar is large, the increase moment of rotation of maximum possible; Because point bone, main bone drum type structure, can not damage when moving twisting is curved, between thin bone, flexible epithelium connects, and the disadvantage of having avoided the rigid blade edge of a knife to be easily torn has increased working life of blade, has also increased the area that blade is given a dinner for a visitor from afar.In the time of wind blade, the main bone of blade, point bone and the thin special connection structural form of bone, make blade produce the finned surface of multiple inclination arcs, improves the speed of wind, thereby increase the pressure of wind to blade by the constraint to three directions of wind, increases the utilization ratio of wind; And other rigid blade only produces the constraint of a direction to wind, too little to the acceleration effect of wind.In the time of blade rotation, the shape that the main bone of blade, point bone and thin bone itself are special and cleverly Placement, the centripetal force that thin bone, point bone are produced can be done work, and, the moment producing from root of blade to end is to accelerate to become large, and this is not possible at other rigid blades;
2, area of contact large, increase the service life: main bone and a point bone are all the hard and soft designs that takes into account, under Limit of Wind Speed effect, divide the most advanced and sophisticated twisting of bone can not exceed 45 degree, because the speed of now rotating can be faster, the resistance of the wind that blade rotation causes, main bone and a point bone can make the cambered surface of blade end keep streamlined, so can not turned round bad easily; The main bone of hollow setting and point bone have farthest alleviated the weight of blade self, also can ensure its rigidity and flexibility simultaneously, in the time of stressed twisting or bending, can change freely; Between thin bone, gap becomes large, and epithelium is stretched, and has increased the blowing area of blade, and each parts are stressed clear and definite, there is no weak link, is not easy to damage, and also can not rupture, and has extended the working life of blade.
Brief description of the drawings
Fig. 1 is blade embodiment's of the present invention front elevation view.
Fig. 2 is the side view of blade of the present invention.
Fig. 3 is the A-A sectional view of Fig. 1 of the present invention.
Fig. 4 is the B-B sectional view of Fig. 1 of the present invention.
Fig. 5 is the C-C sectional view of Fig. 1 of the present invention.
Fig. 6 is the local enlarged diagram of D part of Fig. 1 of the present invention.
Fig. 7 is the E-E sectional view of Fig. 6 of the present invention.
Wherein: 1, main bone 2, thin bone 3, epithelium 4, rotating shaft 5, finned surface 6, point bone 7, projection.
Embodiment
Fig. 1 ~ 7th, most preferred embodiment of the present invention, below in conjunction with accompanying drawing 1 ~ 7, the present invention will be further described.
This horizontal shaft wind-driven generator vane, to use bionics " swing dynamic Theory ", according to moving about of the flight of bird, fish, by for many years, a large amount of experimental summary out, and create out in conjunction with the working principle of generator blade, wind energy transformation is become kinetic energy by this horizontal shaft wind-driven generator vane not only appropriate blade inclined-plane that utilizes, and all in " end acceleration effect " round " swing dynamic Theory " and " funnel acceleration effect ".
Attached Fig. 1 and 2 of reference: what two figure described is blade front elevation view and side elevational view windward, and two figure mainly explain: blade mainly comprises main bone 1, point bone 6, thin bone 2 and epithelium 3; In main bone 1 outer end and a side by rule, many points of bones 6 are set; Thin bone 2 dip-parallel are arranged and are fixedly mounted on main bone 1 and point bone 6, and the cambered surface being formed by main bone 1, point bone 6 and thin bone 2, is exactly finned surface 5; Have two arc finned surfaces 5 to intersect the projection 7 forming at root of blade, the length of the thin bone 2 at protruding 7 places and thickness be all the maximum value of thin bone 2, taking projection 7 as starting point, and the length of arranging up and down the thin bone 2 of installation along the main bone 1 shape setting that all tapers off, formation cambered surface.
Main bone 1 only has one, for hollow cylindrical structural, main bone 1 root diameter (RD) is about 1/25 of blade overall length, main bone 1 the inner is fixedly mounted on rotating shaft 4 excircles, from blade front elevation view, main bone 1 is straight shape from root to length of blade 1/2 place, being connected with a point bone 6 to end from 1/2 is to become gradually curved, and, bending radius diminishes gradually, from the profile of blade, main bone 1 is (the becoming windward curved) that becomes gradually curved from root to blade end, the hollow cylinder of main bone 1 is tapered from root to end, wall thickness is attenuation gradually, the composite material that main bone 1 and point bone 6 are glass fibre reinforced plastics and carbon fiber is made, the construction features of drum type make it possess the hard and soft feature of taking into account, in the time of wind blade, under the drive of thin bone 2 and point bone 6, main bone 1 can twist, in the time of blade rotation, main bone 1 can, to antecurvature moving, produce centripetal moment, and centripetal moment is reached to rotating shaft 4 under the effect of the centripetal force of thin bone 2 and point bone 6.Point autonomous bone 1 end to side of bone 6 described in two figure arranges many (in figure, only drawing three), and point bone 6 spacing for autonomous bone 1 end to side setting become greatly gradually, point bone 6 diameters chap gradually, and point bone 6 length are elongated gradually; Dividing bone 6 is hollow cylindrical structure, and end is solid needle-like tip, and root is connected with main bone 1, from two figure, a point bone 6 is to become gradually curved from root to end, and bending radius diminishes gradually, divide the diameter of bone 6 hollow cylinders to be tapered from root to end, wall thickness is attenuation gradually; In the time of blade rotation, point bone 6 becomes streamlined with the finned surface 5 that carefully bone 2 forms in sense of rotation, and finned surface more than 5 increased the area of giving a dinner for a visitor from afar of blade end, but resistance is very little in sense of rotation; In the time of wind blade, divide bone 6 can twist under thin bone 2 drives, the finned surface 5 that divides bone 6 and thin bone 2 to form can tilt, form the arc finned surface of inclination, according to " funnel acceleration effect " theory, the finned surface 5 of inclination arc has and concentrates the effect of accelerating wind, thereby has strengthened the pressure of wind to blade, has improved the strength of blade rotation.In the time of blade rotation, point bone 6 can, to antecurvature moving, form centripetal force moment of flexure, and by main bone 1, centripetal moment be reached to rotating shaft 4 under the effect of thin bone 2 and self centripetal force, has increased greatly the strength of blade rotation.From two figure, find out, thin bone 2 is arranged in parallel and is fixedly mounted on main bone 1 and point bone 6 with main bone 1, point 6 one-tenth a certain inclination angles of bone, and thin bone 2 is about 60 degree with main bone 1 at main bone 1 root inclination angle, and the width of thin bone 2 is with main bone 1 and divide diminishing and diminishing of bone 6 diameters.
Be that two arc finned surfaces 5 intersect formation in the projection 7 of root of blade, the thin bone 2 at protruding 7 places is the longest, the thickest in all thin bones 2 of blade, shortens gradually from protruding 7 thin bone 2 arcs that start to be arranged above and below along main bone 1; In the time of wind blade, projection 7, just as wind is divided into two strands by one ridge, is blown over wind from the finned surface 5 of projection 7 upper and lower two inclination arcs, utilize again " funnel acceleration effect " that wind is concentrated and accelerated, increase the pressure of wind to blade, improve the strength of blade rotation.
With reference to accompanying drawing 3 ~ 5: accompanying drawing 3,4 and 5 is sectional views of blade diverse location, find out from above three figure, main bone 1 and a point bone 6 are columnar, thin bone 2 is hollow wedge-shaped structure, sectional view is the figure of overlooking of fish, and thin bone 2 is made with main bone 1 and point the same composite material that adopts glass fibre reinforced plastics carbon fiber of bone 6, the wing of the feather formation that 5 stacks of several finned surfaces are just arranged as small bird, is streamlined combination, and they have increased the area of giving a dinner for a visitor from afar of blade end, but can increase hardly the resistance advancing, the thickness of the thin bone 2 that same row are installed reduces and reduces gradually with main bone 1 and point bone 6 external diameter, and the thickness of every thin bone 2 is all from starting to reduce gradually to thin bone 2 ends with main bone 1 and Fen Gu 6 bearings, wall thickness is attenuation gradually also, it is finally solid point of a knife, the length of every thin bone 2, volume, stressed all little (this is compared with other integral rigidity blades), so, its wall thickness is very thin, very light weight, because thin bone 2 is the maximum parts of this blade material, so the quality of whole blade is gently a lot of compared with the blade of other straight rigidity, it is more reasonable that material weight distributes.The width of every thin bone 2 is identical with the external diameter of point bone 6 with the main bone 1 of its corresponding mounting point; The factors such as thin bone 2 sections are the figure of overlooking of fish, and this is effective by giving a dinner for a visitor from afar, rotational resistance is little determine.
With reference to accompanying drawing 6 and 7: accompanying drawing 6 is detailed drawings for blade part, Fig. 7 is a sectional view in detailed drawing, from above two figure, can clearerly find out the relation of main bone 1 and thin bone 2, between thin bone 2, have very thin together gap, the upper and lower resilient epithelium 3 in gap is connected, when main bone 1 and a point bone 6 twist curved when moving, gap can broaden, epithelium 3 is stretched, and the area that blade is given a dinner for a visitor from afar increases, and this has also increased the strength of blade rotation; Because main bone 1 and a point bone 6 are the most rational cylindrical structures, thus twisting is curved can be not destroyed when moving, thereby extended like this working life of blade; As shown in Figure 6, Q point is the mass cg of a thin bone 2 point wherein in blade, F is the centripetal force that this thin bone 2 produces in the time of blade rotation, m is the quality of this thin bone 2, ω is the angular velocity rotating, and R is the distances of these thin bone 2 focus point Q to rotating shaft 4 central point K, and Ln is the distance of Q point to main bone 1, M is the moment that this blade produces, by formula F=m ω
2r and M=m ω
2in RLn, reasoning is learnt, thin bone 2 is away from K point rotating shaft 4 more, and R value is larger, and the degree of crook of main bone 1 and point bone 6 is also larger, and Ln is larger, so, under equal in quality m, M=m ω
2it is large that RLn can accelerate to become, the centripetal force moment of flexure that thin bone 2 produces is passed to point bone 6 of fixing it, divide bone 6 to move to antecurvature, the moment that thin bone 2 can be produced again with time-division bone 6 and the centripetal moment oneself producing are passed to main bone 1 again, simultaneously, can be to antecurvature moving under the effect of the centripetal moment that main bone 1 transmits at thin bone 2 and point bone 6, all thin bones 2 and the centripetal moment that point bone 6 is passed to it are passed to rotating shaft 4 more simultaneously, the phenomenon of this centripetal moment transmission is called " end acceleration effect ", these centripetal moment additions can increase the strength of blade rotation greatly.
Working procedure is as follows: the present invention is in the time of work, formed by three or more blade, interlobate angle must all equate, each blade is fixedly mounted on the outer border of rotating shaft 4, in the time of wind blade, blade can twist, and become gradually large from root to the amplitude of outer end twisting, when wind-force strengthens while reaching certain rank gradually, the amplitude of the torsades de pointes of blade end cambered surface is larger, but, because blade end comes to a point gradually, wind-exposuring area is more and more less, divide bone 6 cambers to become gradually large, so, blade end arc finned surface 5 windward sides are streamlined, the resistance of air causing is very little, but, large windup-degree improves blade end wind energy transformation rate.Meanwhile, the finned surface 5 of inclination arc can be concentrated wind to accelerate, and increases the active force of wind to blade, that is to say and can produce " funnel acceleration effect "; All thin bone 2 and point bones 6 of blade that rotate can produce centripetal moment, these centripetal moments can be accelerated to increase with the increase of blade rotation speed, and the centripetal moment producing to the thin bone 2 of end and point bone 6 from root of blade is to accelerate to increase, this time-division bone 6 and main bone 1 can be to antecurvature moving (main bone 1 and point bone 6 crooked radians become large), main bone 1 reaches rotating shaft 4 by all centripetal moments of flexure simultaneously, " the end acceleration effect " in Here it is bionics " swing dynamic Theory "; This two kinds " effect " increased the power of blade rotation greatly above; Why can produce this two kinds " effect ", the mode that the main shape because of main bone 1 and point bone 6 and main bone 1, point bone 6 and thin bone 2 are connected determines.When main bone 1 and a point bone 6 twist curvedly when moving, the gap that thin bone is 2 can become greatly, and epithelium 3 is stretched, and blade can not be torn, and has increased on the contrary the area of contact of wind, has increased the utilization ratio of wind.
In the time of wind blade, projection 7 is just as wind is divided into two strands by one ridge, and wind blowed on the finned surface 5 of two inclination arcs, and wind is concentrated and accelerated, and can produce equally two " acceleration effects ", increases the strength of blade rotation.
The above, be only preferred embodiment of the present invention, is not the restriction of the present invention being made to other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (6)
1. horizontal shaft wind-driven generator vane, is characterized in that: comprise main bone (1), point bone (6), thin bone (2), epithelium (3) and rotating shaft (4); In main bone (1) outer end and a side many points of bones (6) are set; Thin bone (2) dip-parallel is arranged and is fixedly mounted on main bone (1) and point bone (6), the upper and lower resilient epithelium in gap (3) between two thin bones (2) is connected, form multiple cambered surfaces to main bone (1) and point bone (6) lopsidedness, the cambered surface being formed by main bone (1), point bone (6) and thin bone (2) is exactly finned surface (5); There are two arc finned surfaces (5) to intersect the projection (7) forming at root of blade, length and the thickness maximum of the thin bone (2) that projection (7) is located, taking projection (7) as starting point, the length of thin bone (2) of arranging up and down installation along main bone (1) the shape setting that all tapers off, formation cambered surface.
2. horizontal shaft wind-driven generator vane according to claim 1, it is characterized in that: described main bone (1) arranges one, for hollow cylindrical structural, main bone (1) the inner is fixedly mounted on rotating shaft (4) excircle, main bone (1) front is straight shape from root to length of blade 1/2 place, be connected with a point bone (6) to end from 1/2 bending gradually, and bending radius diminishes gradually; Main bone (1) side is to become gradually curved from root to blade end, main bone (1) is tapered from root to end, wall thickness is attenuation gradually, in the time of wind blade, under the drive of thin bone (2) and point bone (6), main bone (1) twists, in the time of blade rotation, main bone (1) to antecurvature moving, produces centripetal moment, and centripetal moment is reached to rotating shaft (4) under the effect of the centripetal force of thin bone (2) and point bone (6).
3. horizontal shaft wind-driven generator vane according to claim 1 and 2, it is characterized in that: described point bone (6) is hollow cylindrical structure, end is solid needle-like tip, root is connected with main bone (1), dividing bone (6) front is to become gradually curved from root to end, bending radius diminishes gradually, and the diameter of point bone (6) hollow cylinder is tapered from root to end, and wall thickness is attenuation gradually; Divide autonomous bone (1) end of bone (6) to arrange many to a side, point bone (6) spacing that autonomous bone (1) end to side arranges becomes greatly gradually, divides the chap gradually of bone (6) diameter, and point bone (6) length is elongated gradually; In the time of wind blade, divide bone (6) twisting under thin bone (2) drives, in the time of blade rotation, divide bone (6) in sense of rotation, to become streamlined with the finned surface (5) that thin bone (2) forms, divide bone (6) to move to antecurvature under the effect of thin bone (2) and self centripetal force, form centripetal force moment of flexure, and by main bone (1), centripetal moment is reached to rotating shaft (4).
4. horizontal shaft wind-driven generator vane according to claim 1 and 2, it is characterized in that: described thin bone (2) is hollow wedge-shaped structure, thin bone (2) dip-parallel is fixedly mounted on main bone (1) and point bone (6) one sides, the thickness of the thin bone (2) that same row are installed reduces and reduces with main bone (1) and point bone (6) external diameter, and carefully bone (2) width reduces with the minimizing of thickness; Thin bone (2) is more and more less to tip thickness from fixed end, end forms solid cutter shape tip, the wall thickness self-retaining end of thin bone (2) is also more and more thinner to tip, between two thin bones (2), there is very narrow together gap, the flexible epithelium of one deck (3) that has up and down in gap is connected, in the time of wind blade, it is large that the gap between two thin bones (2) becomes, and blade area increases; In the time of wind blade, finned surface (5) can tilt, the arc shaped surface that formation can concentrate the funnel-like of accelerating to be obliquely installed wind.
5. horizontal shaft wind-driven generator vane according to claim 4, it is characterized in that: the upper and lower both side surface in gap between two described thin bones (2) pastes one deck epithelium (3), epithelium (3) is elastomeric, along with the gap between two thin bones (2) becomes large and is stretched, increase the area that blade is given a dinner for a visitor from afar; By epithelium (3), the thin bone (2) being arranged in parallel is connected as one, between every two adjacent thin bones (2), forms resilient connection by epithelium (3).
6. horizontal shaft wind-driven generator vane according to claim 1, is characterized in that: the projection (7) at root of blade is intersected and formed by the finned surface of two inclination arcs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004621.2A CN103016262B (en) | 2013-01-07 | 2013-01-07 | Horizontal axis wind turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310004621.2A CN103016262B (en) | 2013-01-07 | 2013-01-07 | Horizontal axis wind turbine blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016262A CN103016262A (en) | 2013-04-03 |
| CN103016262B true CN103016262B (en) | 2014-09-17 |
Family
ID=47965250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310004621.2A Expired - Fee Related CN103016262B (en) | 2013-01-07 | 2013-01-07 | Horizontal axis wind turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016262B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2166202B (en) * | 1984-10-30 | 1988-07-20 | Rolls Royce | Hollow aerofoil blade |
| WO2009126312A2 (en) * | 2008-04-11 | 2009-10-15 | Clay Clark | Conical helicoid wind turbine |
| CN101424246B (en) * | 2008-11-13 | 2012-10-31 | 华南理工大学 | Wind-powered vane adopting biomimetic central axis design and design method thereof |
| CN201535225U (en) * | 2009-07-03 | 2010-07-28 | 吉林大学 | Bionic coupled paddle of wind turbine generator |
| CN202023699U (en) * | 2011-05-05 | 2011-11-02 | 刘景斌 | Simulation wind driven generator |
| CN203022967U (en) * | 2013-01-07 | 2013-06-26 | 李志海 | Blade of horizontal-axis wind power generator |
-
2013
- 2013-01-07 CN CN201310004621.2A patent/CN103016262B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016262A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7988413B2 (en) | Vertical axis wind turbine | |
| US20110255975A1 (en) | Turbines | |
| US20120128500A1 (en) | Turbines | |
| US20110280708A1 (en) | Vertical axis wind turbins | |
| JP2010522307A5 (en) | ||
| BRPI0808474A2 (en) | WIND POWER INSTALLATION ROTOR. | |
| US20100247320A1 (en) | Wind turbine blade | |
| US20090257884A1 (en) | Wind turbine blade and assembly | |
| US20100158697A1 (en) | Multi-rotor vertical axis wind turbine | |
| CN101865081B (en) | Device for utilizing front edge rudder pieces to adjust output power of rotating blade and method thereof | |
| EP3198139B1 (en) | Rotor blade for wind turbine | |
| CN218479877U (en) | Horizontal shaft wind driven generator | |
| BRPI0901809A2 (en) | wind turbine blades with twisted and conical tips | |
| CN203022967U (en) | Blade of horizontal-axis wind power generator | |
| CN201152232Y (en) | Vertical rotation conjoined wind vane | |
| CN103016262B (en) | Horizontal axis wind turbine blade | |
| CN202417814U (en) | Hybrid vertical-axis wind rotor of wind driven generator | |
| JP6186549B2 (en) | Wings imitating part of the dragonfly wing structure | |
| CN201031768Y (en) | Bionics type wind motor | |
| CN2040956U (en) | Windmill with perpendicular shaft | |
| CN115387955B (en) | Coreless material wind power blade tip structure and forming method | |
| JP5805913B1 (en) | Wind turbine blade and wind power generator equipped with the same | |
| CN101294542A (en) | Bionic wind power vehicle | |
| CN202055991U (en) | Variable propeller pitch fan blade of vertical axis wind generator | |
| CN108953059B (en) | A kind of power transmission unit for wind-power electricity generation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20170107 |