CN103925149A - Assembled low-gravity-center efficient vertical shaft wind turbine - Google Patents
Assembled low-gravity-center efficient vertical shaft wind turbine Download PDFInfo
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- CN103925149A CN103925149A CN201410178175.1A CN201410178175A CN103925149A CN 103925149 A CN103925149 A CN 103925149A CN 201410178175 A CN201410178175 A CN 201410178175A CN 103925149 A CN103925149 A CN 103925149A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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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
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- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The invention relates to an assembled low-gravity-center efficient vertical shaft wind turbine which comprises a fixed tower for with the determined vertical rotation axis and wind wheels supported on the tower. Each wind wheel comprises a wheel frame and blades distributed on the periphery of the wheel frame. The blades include the first blades and the second blades, and the first blades and the second blades are alternately distributed at intervals and are vertically-extending blades with streamline-shaped cross sections respectively. Each wheel frame comprises a set of spokes which are evenly distributed in the circumference direction, horizontally extend and correspond to each other in an up-and-down mode, the outer ends of the spokes corresponding to each other in the up-and-down mode are connected with the corresponding upper portions and the corresponding lower portions of the first blades respectively in a fixed or rotary mode, and the middles of the spokes corresponding to each other in the up-and-down mode are connected with the corresponding upper portions and the corresponding lower portions of the second blades respectively in a fixed or rotary mode. By means of the assembled low-gravity-center efficient vertical shaft wind turbine of the structure, the wind energy use performance of the first blades can be effectively developed, the starting torque of the assembled low-gravity-center efficient vertical shaft wind turbine can be further improved through the second blades, and the low-speed wind energy use performance of the low-wind-speed blades is effectively developed.
Description
Technical field
The present invention relates to a kind of vertical axis windmill, especially a kind of assembly type centre of gravity efficient vertical axis wind energy conversion system, belongs to technical field of wind power generating equipment.
Background technique
According to the applicant understood, in the wind power generating set of operation, the wind energy conversion system overwhelming majority used is the horizontal axis turbines formula wind energy conversion system of wind wheel rotating shaft horizontal positioned, belongs to high wind speed wind energy conversion system category in the market, and low wind speed poor performance wherein, at average annual wind speed
the regional economical operation bad economic results of meter per second.In addition, this class wind energy conversion system operation noise is large, meeting produces infrasonic wave, be not suitable for using in city and community, but also the living environment that can endanger birds.
In addition, also have vertical axis windmill, the feature of this type of wind energy conversion system is that calm tropism requires, noise is little, does not produce infrasonic wave.Compare with horizontal-shaft wind turbine, vertical axis windmill can utilize dimensional airfoil blade, can utilize the lift of blade, can utilize again the thrust (also claiming resistance) of blade; When each blade of its wind wheel is different when wind energy conversion system moves, exert oneself, but take over successively rotation, exert oneself, (vertical shaft blade rotates one week the cyclically-varying of blade load, 360 ° of variations of angle of attack experience, only have the angle of attack just can exert oneself, at other angular ranges, in stall conditions, can not exert oneself at approximately ± 20 ° of scope intra vanes).These features of vertical axis windmill are both advantageous and disadvantageous, and utilizing advantage, suppressing shortcoming is that research and development are applicable to average annual wind speed
the key of the vertical-shaft wind machine technology of meter per second area and urbanite's habitat environment.
Vertical axis windmill blade used has three class aerofoil profiles: the first kind is push type blade, adopts the wind wheel of such blade easily from running up, but the power coefficient Cp of such blade
max≤ 0.15 and rotating speed low, cannot be applicable to efficient wind-driven generator; Equations of The Second Kind is the symmetrical airfoil blade of lift-type, and the aerofoil profile of such blade is NACA00xy (x=1 or 2; Y=0,1 ..., 8 or 9), its Cp
maxheight, the Cp of some blade
maxcan reach 0.45, but adopt the wind wheel of such blade certainly to run up; The 3rd class is that the suction surface of lift-type is the airfoil fan that convex, pressure side have spill, and such blade quantity is numerous, its Cp
maxbetween 0.20-0.30, adopt the wind wheel of such blade certainly to run up, but play torque lower than first kind blade and Cp
maxcorresponding rotating speed is lower than Equations of The Second Kind blade.
At present, utilize the vertical axis windmill of lift-type airfoil fan, substantially adopt " Φ " wind wheel or " H " wind wheel of Darrieus technology, the common characteristic of these two kinds of wind wheels is main axis length >=wind wheel height, thereby these two kinds of wind wheel centers of gravity are higher, in order to guarantee the stability of whole wind wheel, require wind wheel main shaft to there are very high strength and stiffness, cause main shaft weight very heavy.Wherein, " Φ " wind wheel forms (conventionally adopting thin airfoil blade) by the aforementioned Equations of The Second Kind blade of " rope skipping curve " shape, blade two ends are directly connected in main shaft (if will solve " Φ " wind wheel from running up, the aforementioned first kind blade of serpentine also can be connected in to main shaft).The blade that " Φ " wind wheel adopts will have enough flexibilities, its Cp
maxcorresponding tip-speed ratio λ is higher, cause " Φ " wind wheel in low wind speed poor performance." H " wind wheel great majority are crossed cantilever by aforementioned the 3rd class blade pass and are connected in main shaft and form, and for suppressing blade, tremble, and require cantilever to have very high strength and stiffness, cause cantilevered weights very heavy; Meanwhile, the 3rd class blade Cp
maxcorresponding Optimum Leaves width (also claiming chord length) is than the large 50-60% of aforementioned Equations of The Second Kind blade, and correspondingly, leaf weight also will weigh 80-100%.Be limited by this, under equal height, weight ratio " Φ " wind wheel of " H " wind wheel will weigh 1-2 doubly, and its centrifugal load is larger, to the strength and stiffness of main shaft, requires higher.
As can be seen here, lower the center of gravity and weight reduction, increase high Cp
maxthe torque that rises of aerofoil profile is to design two technological break-through points of high-efficient wind turbine, particularly improves the break-through point of low wind speed performance in wind energy conversion system.
Inventor discloses the blower fan of a kind of vertical shaft (also claiming vertical shaft) wind power generating set in Chinese invention patent on April 4th, 2010 application, the patent No. 201010162074.7, notice of authorization CN102213180B.Yet this technological scheme remains in following main disadvantage: (1) interlayer support parts are too too fat to move, larger to interference in air flow, affect the Wind Power Utilization performance of blade; (2) interlayer support structure is optimized not, causes the strength and stiffness in its unit weight lower, and the strength and stiffness that reach expection still need larger weight, are unfavorable for alleviating wind wheel weight; (3) wheel carrier of wind wheel and the adapting structure for electric intensity between main shaft are poor, yet will certainly increase wind wheel weight for improving intensity, and this problem causes wind wheel to maximize; (4) cannot realize wind energy conversion system power controls.Need badly and develop higher interlayer support structure and the adapting structure for electric of intensity in unit weight, thereby when reaching expection intensity, can not increase wind wheel weight, even alleviate wind wheel weight; Develop simultaneously and can realize the structure that power is controlled, by power, control to expand the wind speed range of wind energy conversion system operation, improve generated energy.
In addition, inventor discloses a kind of wing panels of blower fan that utilizes low velocity wind energy to produce power in Chinese invention patent on December 20th, 2004 application, the patent No. 200410073422.8, notice of authorization CN100392240C, belong to low wind speed blade, can effectively utilize the wind energy of lower wind speed.Need badly equally at present and develop the vertical axis windmill that can effectively bring into play such blade low velocity wind energy utility.
Summary of the invention
Technical problem to be solved by this invention is: overcome the problem that prior art exists, a kind of assembly type centre of gravity efficient vertical axis wind energy conversion system is provided, adopted for the special-purpose blade of vertical axis windmill design and the low wind speed blade that can improve torque, and can effectively bring into play the Wind Power Utilization performance of this two classes blade.
It is as follows that the present invention solves the basic technical scheme of its technical problem:
An assembly type centre of gravity efficient vertical axis wind energy conversion system, comprises and determines the fixed gantry of vertical spin axis and be supported in the wind wheel on pylon, described wind wheel and pylon form the pair that horizontally rotates of axial constraint; Described wind wheel comprises the blade that rotating center is supported in the wheel carrier of described pylon and is distributed in described wheel carrier periphery; It is characterized in that, described blade comprises the first blade and the second blade that one group of alternate intervals distributes; Described first, second blade is respectively the streamlined cross-section blade of vertical extension, described the first blade has and is respectively convex and is asymmetricly distributed in the blade face outwardly of blade wing chord both sides and blade face inwardly, the blade face outwardly of described the second blade be spill and inwardly blade face be convex; Described wheel carrier comprises the spoke of one group of circumferential uniform horizontal-extending and upper and lower corresponding, the spoke of described wheel carrier forms respectively transmission frame and at least one connecting frame that a rotating center is supported in pylon, and described connecting frame is fixedly connected with adjacent connecting frame or transmission frame through supporting element; The outer end of described transmission frame, connecting frame spoke is directly fixedly connected with the upper and lower corresponding site of described the first blade respectively or is fixedly connected with or is rotationally connected with the fixed block that is fixed on the first blade; The middle part of described transmission frame, connecting frame spoke is directly fixedly connected with the upper and lower corresponding site of described the second blade respectively or is fixedly connected with or is rotationally connected with the fixed block that is fixed on the second blade.
In this structure, the first blade is positioned at spoke outer end, the second blade and is positioned at spoke middle part, can make like this two kinds of blade organic assembling, has not only utilized the first blade to improve wind energy utilization efficiency, but also utilize the second blade to improve wind wheel and play torque.
The first blade of said structure is the special-purpose blade for vertical axis windmill Unsteady Flow feature design around, and this blade has from run up wind wheel ability and very high power coefficient Cpmax(can reach 0.45-0.50); The second blade belongs to low wind speed blade, can effectively utilize the wind energy of lower wind speed; Claimant finds through going deep into practical studies, by said structure, the first blade, the second blade is fixedly connected with or is rotationally connected with after wheel carrier, can bring into play well the ability that certainly runs up and/or the Wind Power Utilization performance of two class blades.
Especially when employing is rotationally connected mode, wind-drive wind wheel rotates, and the first blade automatic winding under wind-force effect is rotationally connected a little and turns an angle, and can more effectively bring into play the Wind Power Utilization performance of the first blade; Simultaneously, the second blade also can be under wind-force effect automatic rotating several angle, can utilize better low wind speed wind energy on the one hand, and make the first blade also can utilize wind energy under low wind speed, wind wheel moment of rotation in the time of improving on the other hand wind wheel and play torque and reduce high wind speed, improves the wind energy utilization efficiency of wind energy conversion system.
Adopt said structure also can effectively shorten wind wheel main axis length, even can cancel main shaft, thereby effectively reduce wind wheel center of gravity, reduce wind wheel weight.
Preferably, described wheel carrier adopts the first structure:
Described transmission frame middle part is regular polygon and is provided with truss; Described truss consists of the first flange and the loading arm that is distributed in the first flange circumferentially and radially extend, and described loading arm end is connected with the middle part on transmission frame each summit of regular polygon, middle part or each limit of regular polygon respectively; When described truss loading arm end is connected with the middle part on each limit of regular polygon, transmission frame middle part respectively, described transmission frame middle part is also provided with the connecting rod being connected with loading arm between the adjacent both sides of regular polygon; Described the first flange forms the rotating center of transmission frame, and forms the pair that horizontally rotates of axial constraint with pylon top.
More preferably, described wind wheel also comprise be rotationally connected with pylon top and axis along the main shaft of vertical layout or the power input shaft of load, described the first flange and main shaft or be coaxially connected with power input shaft; The mean camber line arch of described the first blade is to described spin axis; Intersection point in the cross section of described the first blade, perpendicular to the thickness biggest place in chordwise on wing chord and the distance between leading edge point are 0.12-0.29 times of wing chord length.
Thereby adopt the first structure can utilize the power input shaft of load to save the main shaft of wind wheel, can lower the center of gravity to greatest extent and alleviate wind wheel weight, reduce cost again.Simultaneously, adopt after the transmission frame of this structure, its truss is as the adapting structure for electric between wheel carrier and load power input shaft, and the intensity in its unit weight is higher, when reaching expection intensity, can not increase wind wheel weight, even can alleviate wind wheel weight, thereby wind wheel can effectively be maximized.In addition, the first structure also can be used for the wind wheel being connected with pylon top main shaft.
Preferably, described wheel carrier adopts the second structure:
Described transmission frame middle part is regular polygon and is provided with truss; Described truss is arranged up and down by two and second, third coaxial flange, and the loading arm that is distributed in respectively second, third flange and circumferentially and radially extends and strengthen arm and form, described loading arm and the end of strengthening arm are connected with each summit of regular polygon, transmission frame middle part respectively; Between corresponding loading arm and reinforcement arm, be provided with at least one muscle; Described second, third flange forms the rotating center of transmission frame, and forms the pair that horizontally rotates of axial constraint with pylon top.
More preferably, described wind wheel also comprise be rotationally connected with pylon top and axis along the main shaft of vertical layout or the power input shaft of load, described second, third flange and main shaft or be coaxially connected with power input shaft; The mean camber line arch of described the first blade is to described spin axis; Intersection point in the cross section of described the first blade, perpendicular to the thickness biggest place in chordwise on wing chord and the distance between leading edge point are 0.12-0.29 times of wing chord length.
In the second structure, truss is as the adapting structure for electric between wheel carrier and main shaft, and the intensity in its unit weight is higher, can not increase wind wheel weight, even can alleviate wind wheel weight, thereby wind wheel can effectively be maximized when reaching expection intensity., adopt after the second structure, wind wheel is stressed to have good uniformity meanwhile, is more conducive to wind wheel and rotates.In addition, the second structure also can be used for the wind wheel being connected with pylon top load power input shaft.
Preferably, described fixed block be that one end is fixedly connected with or is rotationally connected with the spoke of transmission frame or connecting frame, the other end and the first or second blade straight plate that blade face is connected inwardly; Or, described fixed block is " V " shape part with two outer ends and a corner end, two outer ends of described " V " shape part respectively with the first or second blade inwardly blade face or vane end faces be connected, the corner end of described " V " shape part is fixedly connected with or is rotationally connected with the spoke of transmission frame or connecting frame; Or, described fixed block is for having the outer peripheral plate of streamline, plate face and the vane end faces of described plate are connected, and described plate is extended with outstanding ear towards transmission frame or connecting frame, and described outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke; Or, described fixed block is for having the outer peripheral garter spring of streamline, described garter spring inward flange hoop is circumferential in blade, and described garter spring outward edge is extended with outstanding ear towards transmission frame or connecting frame, and described outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke.
Fixed block itself can not affect the utilization of first, second blade to wind energy like this, and when being rotationally connected, be conducive to first, second blade and rotate swimmingly, can bring into play better the Wind Power Utilization performance of special-purpose blade and the low wind speed wind energy utility of low wind speed blade.
For realizing wind energy conversion system power, control, the present invention further perfect technological scheme is as follows:
Preferably, described fixed block is provided with the telescopic controller in order to rotor blade angle between a side of transmission frame or connecting frame and transmission frame or connecting frame spoke, or described fixed block is near being provided with the telescopic controller in order to rotor blade angle between the position of blade and transmission frame or connecting frame spoke; Described controller is elastic member, or described controller is the electric controller of the external control apparatus of controlled end.
When controller is elastic member, can implement wind energy conversion system power in the mode of the force balance between blade centrifugal force and elastic force controls; When controller is electric controller, can implement wind energy conversion system power in the mode of electronic control controls.Implement, after the control of wind energy conversion system power, can expand the wind speed Applicable scope of wind energy conversion system.
For simplified support structure, avoid interference air-flow, affect the Wind Power Utilization performance of blade; Meanwhile, for improving the strength and stiffness in supporting structure unit weight, in order to alleviating wind wheel weight, the present invention further perfect technological scheme is as follows:
Described transmission frame middle part is with connecting frame middle part the regular polygon that shape is identical and each corresponding sides are parallel to each other; Between described transmission frame each summit of regular polygon, middle part and each summit of regular polygon, connecting frame middle part, through supporting element, be connected; Described supporting element is " X " shape part with four ends, and described " X " shape part both upper ends thereof, two ends, bottom are connected with two adjacent vertexs of transmission frame or connecting frame respectively, and described " X " shape part is positioned at the same side of transmission frame and connecting frame; Or described supporting element is to be connected the straight-bar of transmission frame, connecting frame middle part each corresponding vertex of regular polygon; Or described supporting element comprises the straight-bar of the transmission frame that is connected, connecting frame middle part each corresponding vertex of regular polygon, is also provided with diagonal brace between described straight-bar and the dual-side on summit.
Claimant finds through going deep into practical studies, adopts after above-mentioned preferred structure, can not only avoid interference air-flow, can also when meeting the requirement of expection Rigidity and strength, further alleviate wind wheel weight.
Preferably, the company's of being provided with muscle also between the adjacent spoke in regular polygon outside, described transmission frame middle part, plays reinforcement effect; Between the adjacent spoke of described connecting frame middle part regular polygon, be also provided with connecting rod; Or, between the adjacent spoke in regular polygon outside, described connecting frame middle part, be also provided with connecting rod, play reinforcement effect.
Preferably, described connecting frame has at least two and form at least two-layer spoke with transmission frame, and every layer of spoke is separately installed with corresponding blade, and the blade of installing on adjacent two layers spoke is interspersed.
The probability windward that can improve so the best angle of attack of blade, more easily runs up wind wheel, can reduce length of blade with the form of segmentation again, thereby reduce manufacture, transportation and the installation cost of blade.
Compared with prior art, beneficial effect of the present invention is as follows:
(1) by the special-purpose blade of assembly vertical axis windmill and low wind speed blade, optimize linkage structure, this body structure of wheel carrier and the blade anchor structure of blade and wheel carrier, guarantee that the Wind Power Utilization performance of special-purpose blade and the low velocity wind energy utility of low wind speed blade can be not fully exerted, can reduce wind wheel center of gravity and alleviate wind wheel weight simultaneously.
(2) by arranging and optimizing truss structure, make the intensity in adapting structure for electric unit weight higher, thereby be conducive to wind wheel, maximize.
(3) by optimizing supporting structure, can not only avoid interference air-flow, can also further alleviate wind wheel weight by the strength and stiffness that improve in supporting structure unit weight.
(4) by segmentation, be staggered installation of blade, improved the probability windward of the best angle of attack of blade and the wind wheel that more easily runs up, and reduced manufacture, transportation and the installation cost of blade.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2, Fig. 3, Fig. 4 are respectively A, B, the C regional enlarged drawing of Fig. 1.
Fig. 5 is the D regional enlarged drawing of Fig. 4.
Fig. 6 is the structural representation of the embodiment of the present invention 1 wheel carrier.
Fig. 7 is the structural representation of the embodiment of the present invention 1 transmission frame and truss.
Fig. 8, Fig. 9 are respectively the structural representation of the embodiment of the present invention 1 two kinds of connecting framees used.
Figure 10 is the structural representation of the embodiment of the present invention 1 supporting element.
Figure 11 is the structural representation of the embodiment of the present invention 1 fixed block.
Figure 12 is the structural representation of the embodiment of the present invention 2.
Figure 13, Figure 14, Figure 15 are respectively E, F, the G regional enlarged drawing of Figure 12.
Figure 16 is the structural representation of the embodiment of the present invention 2 wheel carriers.
Figure 17 is the structural representation of the embodiment of the present invention 2 transmission frames and truss.
Figure 18 is the structural representation of the embodiment of the present invention 3.
Figure 19 to Figure 22 is respectively H, I, J, the K regional enlarged drawing of Figure 18.
Figure 23 is the structural representation of the embodiment of the present invention 3 wheel carriers.
Figure 24 to Figure 32 is other transmission frame schematic diagram that the present invention can be used for embodiment 1 to 3.
Figure 33 to Figure 35 is the transmission frame schematic diagram that the present invention can be used for having main shaft structure.
Figure 36 to Figure 38 is respectively truss structure schematic diagram in Figure 33 to Figure 35.
Figure 39 to Figure 45 is other connecting frame schematic diagram that the present invention can use.
Figure 46, Figure 47 are other supporting element schematic diagram that the present invention can use.
Figure 48 is the schematic diagram that wind wheel of the present invention has main shaft structure.
Other fixed block schematic diagram that Figure 49, Figure 50 the present invention can use.
Figure 51 is the schematic diagram of the special-purpose blade profile of the present invention's vertical axis windmill used.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in further detail.But the invention is not restricted to given example.
Embodiment 1
The present embodiment assembly type centre of gravity efficient vertical axis wind energy conversion system as shown in Figures 1 to 4, comprises and determines the fixed gantry 1 of vertical spin axis and be supported in the wind wheel 2 on pylon 1, and wind wheel 2 and pylon 1 form the pair that horizontally rotates of axial constraint; Wind wheel 2 comprises that rotating center is supported in the wheel carrier 3 of pylon 1 and the blade that is distributed in wheel carrier 3 peripheries; Blade comprises the first blade 4 and the second blade 4-1 that one group of alternate intervals distributes; First, second blade 4,4-1 are respectively the streamlined cross-section blade of vertical extension, and the first blade 4 has and is respectively convex and is asymmetricly distributed in the blade face outwardly of blade wing chord both sides and blade face inwardly; The blade face outwardly of the second blade 4-1 be spill and inwardly blade face be convex; Wheel carrier 3 comprises the spoke of one group of circumferential uniform horizontal-extending and upper and lower corresponding, the spoke outer end of upper and lower corresponding is rotationally connected with the upper and lower corresponding site of the first blade 4 respectively, and the spoke middle part of upper and lower corresponding is rotationally connected with the upper and lower corresponding site of the second blade 4-1 respectively.
Particularly, as shown in Figure 6, the spoke of wheel carrier 3 forms respectively transmission frame 6 and at least one connecting frame 7 that a rotating center is supported in pylon 1, and connecting frame 7 is fixedly connected with adjacent connecting frame 6 or transmission frame 7 through supporting element 11; The outer end of transmission frame 6, connecting frame 7 spokes is rotationally connected with the fixed block 4-2 that is fixed on the first blade 4 respectively, and the middle part of transmission frame 6, connecting frame 7 spokes is rotationally connected with the fixed block 8 that is fixed on the second blade 4-1 respectively; As shown in Figure 4, the first blade 4 shape of cross sections are asymmetric droplet-shaped, and the mean camber line arch of the first blade 4 is to spin axis; As shown in Figure 51, the intersection point in the cross section of the first blade 4, perpendicular to the thickness biggest place in chordwise on wing chord and the distance X t between leading edge point are 0.12-0.29 times of wing chord length.The present embodiment adopts by three connecting framees 7 and a three-decker that transmission frame 6 forms, form three layers of spoke structure, each first blade 4 or the second blade 4-1 are installed on respectively each layer of spoke, and the first blade 4 or the second blade 4-1 that on adjacent two layers spoke, install are interspersed.
As shown in Figure 5, fixed block 4-2 be that the spoke of one end and transmission frame 6 or connecting frame 7 is rotationally connected, the other end and the first or second blade 4, the 4-1 straight plate that blade face is connected inwardly; As shown in figure 11, fixed block 8 is for having " V " shape part of two outer end 8-1 and a corner end 8-2, two outer end 8-1 of " V " shape part are connected on blade face inwardly with the first or second blade 4,4-1 respectively, and the corner end 8-2 of " V " shape part and the spoke of transmission frame 6 or connecting frame 7 are rotationally connected.It should be noted that, two outer end 8-1 of " V " shape part also can be connected with the vane end faces of the first or second blade 4,4-1 respectively.
As shown in Fig. 2, Fig. 6, the power input shaft 13 of pylon 1 top and load is rotationally connected, and the axis of power input shaft 13 is along vertical layout; Transmission frame 6 middle parts are provided with the first flange 10-6 that forms rotating center, and the first flange 10-6 is fixedly connected with power input shaft 13; The first flange and pylon top form the pair that horizontally rotates of axial constraint.
Particularly, transmission frame 6 middle parts are regular polygon and are provided with truss 10; Truss 10 comprises the first flange 10-6, and the first flange 10-6 is fixedly connected with power input shaft 13, and the first flange 10-6 is circumferentially evenly equipped with the loading arm 10-3 radially extending, and loading arm 10-3 end is connected with transmission frame 6 each summits of middle part regular polygon respectively.
As shown in Figure 7 to 10, transmission frame 6 middle parts are the regular polygon that shape is identical and each corresponding sides are parallel to each other (the present embodiment is regular hexagon) with connecting frame 7 middle parts, and connecting frame 7 adopts two kinds of structures, as shown in Figure 8 a kind of, whole triangular in shape, as shown in Figure 9, integral body is hexagon to another kind; Between transmission frame 6 each summits of middle part regular polygon and connecting frame 7 each summits of middle part regular polygon, through supporting element 11, be connected; Supporting element 11 is for having " X " shape part of four ends, and " X " shape part both upper ends thereof, two ends, bottom are connected with two adjacent vertexs of transmission frame 6 or connecting frame 7 respectively, and " X " shape part is positioned at the same side of transmission frame 6 and connecting frame 7.
It should be noted that, with upper fixing element 4-2,8, also can be fixedly connected with the outer end of transmission frame 6, connecting frame 7 spokes, thereby the first blade 4, the second blade 4-1 are fixedly connected with wheel carrier spoke.
Embodiment 2
The present embodiment assembly type centre of gravity efficient vertical axis wind energy conversion system is as shown in Figure 12 to Figure 17, and its basic structure is identical with embodiment 1, and difference is only:
(1) the present embodiment adopts by a connecting frame 7 and a single layer structure that transmission frame 6 forms.
(2) fixed block 8 is near being provided with the controller 12 in order to rotor blade angle between the position of blade 4-1 and transmission frame 6 or connecting frame 7 spokes.
(3) as shown in figure 17, transmission frame 6 is whole triangular in shape.
(4) connecting frame 7 only has a kind of structural type, same as shown in Figure 8.
(5) fixed block 4-2 structure is identical with fixed block 8, all same as shown in Figure 11.
Embodiment 3
The present embodiment assembly type centre of gravity efficient vertical axis wind energy conversion system is as shown in Figure 18 to Figure 23, and its basic structure is identical with embodiment 1, and difference is only:
(1) the present embodiment adopts by two connecting framees 7 and a double layer construction that transmission frame 6 forms.
(2) connecting frame 7 only has a kind of structural type, same as shown in Figure 8.
(3) fixed block 4-2 structure is identical with fixed block 8, all same as shown in Figure 11.
(4) fixed block 4-2 and fixed block 8 are near being respectively equipped with the telescopic controller 12 in order to rotor blade angle between the position of blade 4-1 and transmission frame 6 or connecting frame 7 spokes.
In addition, as shown in figure 22, being rotationally connected of fixed block and transmission frame or connecting frame is some c point, and the intersection point away from controller 12 in two intersection points of fixed block line stretcher and axis of runner blade is O point, and the intersection point of pylon axis and fixed block plane is a point; The line that O point and a are ordered and the angle between axis of runner blade are θ angle.
Controller 12 can be elastic member, and when applying or cancel external force, its length can change or reply, when a certain wind speed makes wind energy conversion system rotation speed change, blade centrifugal force changes thereupon, and blade be take c point and is turned an angle as axle center, controller 12 is elongated or shortened, and θ value is changed, thereby change the effect of air-flow to blade, this effect causes again the reverse feedback of wind energy conversion system rotating speed and blade centrifugal force to change, the elastic force of this Time Controller 12 makes the length of controller 12, θ value, wind energy conversion system rotating speed and blade centrifugal force all produce reverse feedback again to be changed, in such circulation, the amplitude of variation of each variable is more and more less, until transient equiliblium is set up, till θ value no longer changes.
Like this, on the one hand can immediate feedback and cost low, also from starting to change to the feedback that starts to control, by elastic material is instantaneous, undertaken, control on the other hand reliability high and non-maintaining.
In addition, controller 12 also can adopt the electric controller of the external control apparatus of controlled end, but, when electronic control, from start to change to the feedback that starts to control, there is response time delay on the one hand, the response time cost of shorter electronic control is higher, will improve on the other hand reliability and can only adopt expensive electric elements, and need periodic maintenance.
In addition to the implementation, the present invention can also have other mode of executions, for example:
(1) wind wheel also can adopt main shaft structure, as shown in Figure 48, Figure 33, Figure 36: wind wheel 2 also comprise be rotationally connected with pylon 1 top and axis along the main shaft 9 of vertical layout; Transmission frame 6 middle parts are regular polygon and are provided with truss 10; Truss 10 comprises that two arrange and coaxial second, third flange 10-1,10-2 up and down, second, third flange 10-1,10-2 are located at respectively main shaft 9 circumferentially and are connected with main shaft 9, second, third flange 10-1,10-2 are circumferentially evenly equipped with respectively the loading arm 10-3 radially extending and strengthen arm 10-4, and the end of loading arm 10-3 and reinforcement arm 10-4 is connected with transmission frame 6 each summits of middle part regular polygon respectively; Between corresponding loading arm 10-3 and reinforcement arm 10-4, be provided with at least one muscle 10-5; Second, third flange 10-1,10-2 form the rotating center of transmission frame 6, and form the pair that horizontally rotates of axial constraint with pylon top.Between muscle 10-5, the loading arm 10-3 of truss 10, reinforcement arm 10-4, form a plurality of triangular support structure.
(2) transmission frame 6 can have various structures form, and transmission frame 6 middle parts can be equilateral triangle, square, regular pentagon, regular hexagon etc.
The example that part can be used for embodiment 1 to 3 is as shown in Figure 24 to Figure 32.
Part can be used for having the example of main shaft structure as shown in Figure 33 to Figure 35, and the truss in each figure is as shown in Figure 36 to Figure 38.
Wherein, as shown in figure 25, loading arm 10-3 end also can be connected with the middle part on transmission frame 6 each limits of regular polygon, middle part respectively, is also provided with the connecting rod 10-7 being connected with loading arm 10-3 end between the transmission frame 6 adjacent both sides of middle part regular polygon simultaneously.
As shown in Figure 28,30, the company's of being provided with muscle 6-1 also between the adjacent spoke in transmission frame 6 middle part regular polygons outsides.
(3) connecting frame 7 can have various structures form, and connecting frame 7 middle parts can be equilateral triangle, square, regular pentagon, regular hexagon etc.; Part example is as shown in Figure 39 to Figure 45.
Wherein, as shown in figure 40, between the adjacent spoke of connecting frame 7 middle part regular polygons, be also provided with connecting rod 7-2; As shown in Figure 42,44, between the adjacent spoke in connecting frame 7 regular polygon outsides, middle part, be also provided with connecting rod 7-1.
(4) as shown in figure 46, supporting element 11 can be the straight-bar of the transmission frame 6 that is connected, connecting frame 7 middle part each corresponding vertexs of regular polygon.Or as shown in figure 47, supporting element 11 comprises the straight-bar 11-1 of the transmission frame 6 that is connected, connecting frame 7 middle part each corresponding vertexs of regular polygon, is also provided with diagonal brace 11-2 between straight-bar 11-1 and the dual-side on summit.
(5) fixed block also can adopt following structure: as shown in figure 50, fixed block is for having the outer peripheral plate of streamline, plate face and the vane end faces of plate are connected, plate is extended with outstanding ear towards transmission frame or connecting frame, and outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke; Or, as shown in figure 49, fixed block is for having the outer peripheral garter spring of streamline, and garter spring inward flange hoop is circumferential in blade, garter spring outward edge is extended with outstanding ear towards transmission frame or connecting frame, and outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke.Adopt after the fixed block of this structure, implement the structure that power controls and be: fixed block is provided with the telescopic controller in order to rotor blade angle between a side of transmission frame or connecting frame and transmission frame or connecting frame spoke.
All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (10)
1. an assembly type centre of gravity efficient vertical axis wind energy conversion system, comprises and determines the fixed gantry of vertical spin axis and be supported in the wind wheel on pylon, described wind wheel and pylon form the pair that horizontally rotates of axial constraint; Described wind wheel comprises the blade that rotating center is supported in the wheel carrier of described pylon and is distributed in described wheel carrier periphery; It is characterized in that, described blade comprises the first blade and the second blade that one group of alternate intervals distributes; Described first, second blade is respectively the streamlined cross-section blade of vertical extension, described the first blade has and is respectively convex and is asymmetricly distributed in the blade face outwardly of blade wing chord both sides and blade face inwardly, the blade face outwardly of described the second blade be spill and inwardly blade face be convex; Described wheel carrier comprises the spoke of one group of circumferential uniform horizontal-extending and upper and lower corresponding, the spoke of described wheel carrier forms respectively transmission frame and at least one connecting frame that a rotating center is supported in pylon, and described connecting frame is fixedly connected with adjacent connecting frame or transmission frame through supporting element; The outer end of described transmission frame, connecting frame spoke is directly fixedly connected with the upper and lower corresponding site of described the first blade respectively or is fixedly connected with or is rotationally connected with the fixed block that is fixed on the first blade; The middle part of described transmission frame, connecting frame spoke is directly fixedly connected with the upper and lower corresponding site of described the second blade respectively or is fixedly connected with or is rotationally connected with the fixed block that is fixed on the second blade.
2. the centre of gravity of assembly type according to claim 1 efficient vertical axis wind energy conversion system, is characterized in that, described wheel carrier adopts the first structure:
Described transmission frame middle part is regular polygon and is provided with truss; Described truss consists of the first flange and the loading arm that is distributed in the first flange circumferentially and radially extend, and described loading arm end is connected with the middle part on transmission frame each summit of regular polygon, middle part or each limit of regular polygon respectively; When described truss loading arm end is connected with the middle part on each limit of regular polygon, transmission frame middle part respectively, described transmission frame middle part is also provided with the connecting rod being connected with loading arm between the adjacent both sides of regular polygon; Described the first flange forms the rotating center of transmission frame, and forms the pair that horizontally rotates of axial constraint with pylon top.
3. the centre of gravity of assembly type according to claim 2 efficient vertical axis wind energy conversion system, it is characterized in that, described wind wheel also comprise be rotationally connected with pylon top and axis along the main shaft of vertical layout or the power input shaft of load, described the first flange and main shaft or be coaxially connected with power input shaft; The mean camber line arch of described the first blade is to described spin axis; Intersection point in the cross section of described the first blade, perpendicular to the thickness biggest place in chordwise on wing chord and the distance between leading edge point are 0.12-0.29 times of wing chord length.
4. the centre of gravity of assembly type according to claim 1 efficient vertical axis wind energy conversion system, is characterized in that, described wheel carrier adopts the second structure:
Described transmission frame middle part is regular polygon and is provided with truss; Described truss is arranged up and down by two and second, third coaxial flange, and the loading arm that is distributed in respectively second, third flange and circumferentially and radially extends and strengthen arm and form, described loading arm and the end of strengthening arm are connected with each summit of regular polygon, transmission frame middle part respectively; Between corresponding loading arm and reinforcement arm, be provided with at least one muscle; Described second, third flange forms the rotating center of transmission frame, and forms the pair that horizontally rotates of axial constraint with pylon top.
5. the centre of gravity of assembly type according to claim 4 efficient vertical axis wind energy conversion system, it is characterized in that, described wind wheel also comprise be rotationally connected with pylon top and axis along the main shaft of vertical layout or the power input shaft of load, described second, third flange and main shaft or be coaxially connected with power input shaft; The mean camber line arch of described the first blade is to described spin axis; Intersection point in the cross section of described the first blade, perpendicular to the thickness biggest place in chordwise on wing chord and the distance between leading edge point are 0.12-0.29 times of wing chord length.
6. according to assembly type centre of gravity efficient vertical axis wind energy conversion system described in claim 1 to 5 any one, it is characterized in that, described fixed block is that one end is fixedly connected with or is rotationally connected with the spoke of transmission frame or connecting frame, the other end and the first or second blade straight plate that blade face is connected inwardly; Or, described fixed block is " V " shape part with two outer ends and a corner end, two outer ends of described " V " shape part respectively with the first or second blade inwardly blade face or vane end faces be connected, the corner end of described " V " shape part is fixedly connected with or is rotationally connected with the spoke of transmission frame or connecting frame; Or, described fixed block is for having the outer peripheral plate of streamline, plate face and the vane end faces of described plate are connected, and described plate is extended with outstanding ear towards transmission frame or connecting frame, and described outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke; Or, described fixed block is for having the outer peripheral garter spring of streamline, described garter spring inward flange hoop is circumferential in blade, and described garter spring outward edge is extended with outstanding ear towards transmission frame or connecting frame, and described outstanding ear is fixedly connected with or is rotationally connected with the outer end of transmission frame, connecting frame spoke.
7. according to assembly type centre of gravity efficient vertical axis wind energy conversion system described in claim 1 to 5 any one, it is characterized in that, described fixed block is provided with the telescopic controller in order to rotor blade angle between a side of transmission frame or connecting frame and transmission frame or connecting frame spoke, or described fixed block is near being provided with the telescopic controller in order to rotor blade angle between the position of blade and transmission frame or connecting frame spoke; Described controller is elastic member, or described controller is the electric controller of the external control apparatus of controlled end.
8. according to assembly type centre of gravity efficient vertical axis wind energy conversion system described in claim 1 to 5 any one, it is characterized in that, described transmission frame middle part is with connecting frame middle part the regular polygon that shape is identical and each corresponding sides are parallel to each other; Between described transmission frame each summit of regular polygon, middle part and each summit of regular polygon, connecting frame middle part, through supporting element, be connected; Described supporting element is " X " shape part with four ends, and described " X " shape part both upper ends thereof, two ends, bottom are connected with two adjacent vertexs of transmission frame or connecting frame respectively, and described " X " shape part is positioned at the same side of transmission frame and connecting frame; Or described supporting element is to be connected the straight-bar of transmission frame, connecting frame middle part each corresponding vertex of regular polygon; Or described supporting element comprises the straight-bar of the transmission frame that is connected, connecting frame middle part each corresponding vertex of regular polygon, is also provided with diagonal brace between described straight-bar and the dual-side on summit.
9. the centre of gravity of assembly type according to claim 8 efficient vertical axis wind energy conversion system, is characterized in that, the company's of being provided with muscle also between the adjacent spoke in regular polygon outside, described transmission frame middle part; Between the adjacent spoke of described connecting frame middle part regular polygon, be also provided with connecting rod, or, between the adjacent spoke in regular polygon outside, described connecting frame middle part, be also provided with connecting rod.
10. according to assembly type centre of gravity efficient vertical axis wind energy conversion system described in claim 1 to 5 any one, it is characterized in that, described connecting frame has at least two and form at least two-layer spoke with transmission frame, and every layer of spoke is separately installed with corresponding blade, and the blade of installing on adjacent two layers spoke is interspersed.
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| CN201410178175.1A CN103925149B (en) | 2014-04-29 | 2014-04-29 | Assemble type centre of gravity efficient vertical axis wind energy conversion system |
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| CN201410178175.1A CN103925149B (en) | 2014-04-29 | 2014-04-29 | Assemble type centre of gravity efficient vertical axis wind energy conversion system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104500330A (en) * | 2014-12-15 | 2015-04-08 | 山东大学 | Vertical axis wind turbine provided with layered and staggered combined blades |
| CN106050554A (en) * | 2015-08-26 | 2016-10-26 | 陈忠维 | Vertical axis wind turbine |
| CN106505789A (en) * | 2016-12-20 | 2017-03-15 | 田曙光 | Electromotor lever and electromotor |
| CN106837684A (en) * | 2015-12-10 | 2017-06-13 | 苏州飞能可再生能源科技有限公司 | Efficient vertical axis wind energy conversion system |
| CN107842471A (en) * | 2016-09-18 | 2018-03-27 | 李亦博 | Vertical axis windmill cantilever and its wind energy conversion system |
| CN112523967A (en) * | 2020-12-01 | 2021-03-19 | 上海电气风电集团股份有限公司 | Lattice type comprehensive shaft fan tower |
| CN112963301A (en) * | 2021-02-02 | 2021-06-15 | 江苏德克玛电气有限公司 | Connecting support for vertical generator fan blade support and generator main shaft |
| WO2022098266A1 (en) * | 2020-11-06 | 2022-05-12 | Общество С Ограниченной Ответственностью "Тепловетровые Технологии" | Aerodynamically semi-transparent stand for a collapsible wind power installation |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500330A (en) * | 2014-12-15 | 2015-04-08 | 山东大学 | Vertical axis wind turbine provided with layered and staggered combined blades |
| CN106050554A (en) * | 2015-08-26 | 2016-10-26 | 陈忠维 | Vertical axis wind turbine |
| CN106050554B (en) * | 2015-08-26 | 2019-06-14 | 陈忠维 | A kind of vertical axis windmill |
| CN106837684A (en) * | 2015-12-10 | 2017-06-13 | 苏州飞能可再生能源科技有限公司 | Efficient vertical axis wind energy conversion system |
| CN106837684B (en) * | 2015-12-10 | 2019-08-20 | 李亦博 | Efficient vertical axis wind energy conversion system |
| CN107842471A (en) * | 2016-09-18 | 2018-03-27 | 李亦博 | Vertical axis windmill cantilever and its wind energy conversion system |
| CN107842471B (en) * | 2016-09-18 | 2020-03-13 | 李亦博 | Cantilever for vertical axis wind turbine and wind turbine thereof |
| CN106505789A (en) * | 2016-12-20 | 2017-03-15 | 田曙光 | Electromotor lever and electromotor |
| WO2022098266A1 (en) * | 2020-11-06 | 2022-05-12 | Общество С Ограниченной Ответственностью "Тепловетровые Технологии" | Aerodynamically semi-transparent stand for a collapsible wind power installation |
| CN112523967A (en) * | 2020-12-01 | 2021-03-19 | 上海电气风电集团股份有限公司 | Lattice type comprehensive shaft fan tower |
| CN112523967B (en) * | 2020-12-01 | 2022-02-15 | 上海电气风电集团股份有限公司 | Lattice type comprehensive shaft fan tower |
| CN112963301A (en) * | 2021-02-02 | 2021-06-15 | 江苏德克玛电气有限公司 | Connecting support for vertical generator fan blade support and generator main shaft |
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