CN104214042A - Vertical axis wind turbine capable of continuously keeping effective attack angle of blades - Google Patents
Vertical axis wind turbine capable of continuously keeping effective attack angle of blades Download PDFInfo
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- CN104214042A CN104214042A CN201310213517.4A CN201310213517A CN104214042A CN 104214042 A CN104214042 A CN 104214042A CN 201310213517 A CN201310213517 A CN 201310213517A CN 104214042 A CN104214042 A CN 104214042A
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a vertical axis wind turbine capable of continuously keeping the effective attack angle of blades. The vertical axis wind turbine comprises an output shaft, a supporting frame, the blades, an attack angle adjusting device and a wind alignment device, wherein the supporting frame is fixedly connected with the output shaft and drives the output shaft to rotate, the blades are installed on the supporting frame through rotation of a rotating shaft and push the supporting frame to drive the output shaft to rotate, the attack angle adjusting device is used for adjusting the attack angle of the blades, and the wind alignment device is used for driving the attack angle adjusting device to rotate to achieve wind alignment. The attack angle adjusting device comprises at least one attack angle adjusting guide rail and at least one attack angle adjusting crank (8), wherein the attack angle adjusting guide rail is installed on the wind alignment device and is in a standard circular shape. The attack angle adjusting guide rail surrounds the axis of the output shaft. The blades are rotationally connected to the supporting frame. One end of the attack angle adjusting crank (8) is fixedly connected with the blades, and the other end of the attack angle adjusting crank (8) is arranged on the attack angle adjusting guide rail in a sliding mode. The vertical axis wind turbine can effectively increase the utilization rate of wind energy and is easy to manufacture, low in cost and convenient to maintain.
Description
Technical field
The present invention relates to a kind of vertical axis windmill, relate in particular to a kind of sustainable maintenance blade effective angle of attack formula vertical axis windmill.
Background technique
The wind energy such as the current widely used wind-driven generator machinery overwhelming majority is horizontal axial type structure, and it possesses skills ripe, simple in structure and efficiency compared with advantages of higher, becomes the main type of present stage commercial off-the-shelf.But horizontal axis wind energy machinery also exists that blade tip speed is high, noise is larger, should not be arranged on population compared with multizone; Generator and pylon are in blade scanning area, cause the loss of cut-off wind face; Generator riding position is higher, increases support cost; Blade movement direction is vertical with wind direction, and blade circles and can only disposablely hold back the deficiencies such as wind energy.
Although and the wind energy machinery of vertical shaft can overcome above deficiency theoretically, have that technical know-how is immature, structure is more complicated and the problem such as wind energy utilization is not high.From structure, analyze, major part belongs to resistance type blade structure, and tip-speed ratio is less than 1, therefore efficiency is lower; Although occurred afterwards the vertical-shaft wind machinery of some lift-types, the same with common resistance type blower fan, their blade is to be all fixedly mounted on supporting frame.The angle of attack of running Leaf and wind constantly changes, and 1/3 circumference of only having an appointment in a running circumference produces driving moment, and 1/3 circumference of separately having an appointment produces resistance torque, and 1/3 circumference of also having an appointment is transition stage.These deficiencies are the key factors that affect vertical-shaft wind machinery efficiency above.
So, there is the more on-stream design that can change the vertical axis windmill of attack angle of blade, but all because angle of attack adjustment range is less, can not arbitrarily angled rotor blade; Tune attack angle mechanism is complicated, and while adjusting the angle of attack, power consumption is large, wearing and tearing are many; What have also needs to join the complicated controlling mechanisms such as cam link, gear, motor; And the factors such as difficulty, troublesome maintenance and operating cost height of producing fail to come into operation.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of sustainable maintenance blade effective angle of attack formula vertical axis windmill is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of sustainable maintenance blade effective angle of attack formula vertical axis windmill, comprise output shaft, be fixedly connected with described output shaft drive described output shaft rotation supporting frame, be arranged on support frame as described above rotationally and promote blade, the tune angle of attack device of adjusting described attack angle of blade that support frame as described above drives described output shaft rotation and drive described tune angle of attack device rotate to wind to wind apparatus;
It is described on wind apparatus and be the tune angle of attack guide rail of standard circular and at least one adjusts angle of attack crank that described tune angle of attack device comprises that at least one is arranged on; Described tune angle of attack guide rail is around the axis setting of described output shaft; Be connected on support frame as described above to described blade rotation, one end of described tune angle of attack crank is fixedly connected with described blade, and the other end is slidably arranged on described tune angle of attack guide rail; When slide in one end of described tune angle of attack crank on described tune angle of attack guide rail, the other end drives described blade rotation and constant in the tune angle of attack angle of blade described in rotation.
Preferably, described to wind apparatus comprise be rotatably arranged on the rotating disk of described output shaft periphery and drive described dial rotation to wind mechanism; Described tune angle of attack guide rail be take output shaft on the described rotating disk of being arranged on of the center of circle, rotation.
Preferably, on described rotating disk, being also provided with for promoting to adjust angle of attack guide rail tune attack angle mechanism around output shaft rotation on described rotating disk, the center of circle of described tune angle of attack guide rail is prejudicially around the axis setting of described output shaft (1).
Preferably, described driving controlling mechanism comprises three of being disposed on described tune angle of attack guide rail or three above travellers, is arranged on nut push pedal, the screw rod of attaching nut's push pedal and the motor of connecting screw rod adjusted on angle of attack guide rail; On described rotating disk, be provided with the arc chute corresponding with described traveller, described arc chute comprises take the multi-section circular arc connected in star that output shaft is the center of circle, or be whole circular groove, what described traveller was corresponding is arranged in described arc chute, and described traveller and described arc chute are slidably matched; Described blade is lift-type blade, comprises brachycephalic front end and pointed rear end, the on-stream weather gage that remains on of leading edge of the brachycephalic of described blade.
Preferably, described blade also comprises that one end of described tune angle of attack crank is connected with described rotating shaft for being rotationally connected the rotating shaft of support frame as described above; Described rotating shaft also rigid connecting is connected to the secondary handle of the lead angle paralleling with the described blade string of a musical instrument; On described rotating disk, be positioned at and adjust angle of attack guide rail one side to be provided with the lead angle slide block being slidably matched with the secondary handle of described lead angle.
Preferably, described at least one tune angle of attack guide rail comprises first, second tune angle of attack guide rail, it is indent guide rail that described first, second adjusted angle of attack guide rail, described first, second adjust angle of attack guide rail groove the degree of depth not etc., described first, second adjusts the center of circle of angle of attack guide rail not overlap; Described at least one adjust angle of attack crank to comprise that orthogonal first, second adjust angle of attack crank, described first, second adjusts angle of attack crank to adjust with described first, second coordinating that angle of attack guide rail moves respectively; Or,
Described at least one tune angle of attack guide rail is an indent guide rail, in described tune angle of attack guide rail, be provided with rotationally a unsteady annulus, described unsteady annulus and described tune angle of attack guide rail have together circle center, on described unsteady annulus, be also provided with the jack arranging by described number of blade decile, the end of described tune angle of attack crank is arranged in described jack and by adjusting angle of attack crank to drive unsteady annulus to rotate together described in described vane drive
Preferably, between described blade, be provided with flow guide device, to make the air-flow of flowing through after described flow guide device change direction, become deflection air-flow, described deflection air-flow promotes the blade blunt end of described rotating disk lee gauge, and makes lee gauge blade produce driving moment.
Preferably, described flow guide device comprises arc deflector, is connected to clamp and the connecting rod at the upper and lower two ends of arc deflector; Described connecting rod penetrates upper and lower clamp, and the lower end of described connecting rod is rotatably connected on output shaft, and the top of described connecting rod is fixedly connected with wind mechanism; Described is wind tail vane to wind mechanism; Or,
The described swing mechanism that vertical axis windmill integral body is swung with the wind that wind mechanism is comprised, described swing mechanism comprises the axle sleeve that is fixedly connected on rotating disk one side, and the swing axis that one end is arranged in axle sleeve, the other end is fixing.
Preferably described rotating disk is plane rotary disc, and described tune angle of attack guide rail is plane device, and is arranged on rotationally on described plane rotary disc, and support frame as described above is parallel with described plane rotary disc, the perpendicular setting of the axis of described blade and support frame as described above; Or,
The axis of described blade and support frame as described above shape form an angle, the V-shaped layout of described blade, and now, one end of described tune angle of attack crank is slidably arranged on described tune angle of attack guide rail, and the other end carries out chain connection by the rotating shaft of bearing pin and described blade.
Preferably, described rotating disk is sphere rotating disk, traveller on described tune angle of attack guide rail is arranged in the arc chute of described sphere disk upper surface and rotates around take the described arc chute that output shaft is the center of circle, the axis of described blade and support frame as described above shape form an angle, and described blade is V-type layout.
Beneficial effect of the present invention is: in the present invention, by the blade medial axis prolonged section tune angle of attack crank that is rigidly connected, adjust angle of attack crank to insert a round tune angle of attack guide rail downwards and be rotatably assorted, at rotation process Leaf, can hold back wind energy twice.This wind energy conversion system adjusts angle of attack guide rail to change position by driven by motor in good time, thereby angle of attack crank and blade oscillating are adjusted in guiding, and then changes the angle of attack windward of blade, makes blade can produce driving moment in most positions of circumference, improves wind energy utilization.
This pneumatic equipment blades made is streamlined (or other has the prismatic blade of certain aerofoil profile) section, the on-stream weather gage that always remains on of leading edge of blade brachycephalic, and make dexterously blade all can obtain lift-type moment at the forward and backward half cycle windward of work circumference, blade rotation can be held back wind energy twice in one week, therefore the invention belongs to lift-type wind energy conversion system.
The V-shaped layout design of blade, on blade, the larger opening of part can strengthen wind energy utilization; Near the bottom of blade, close rotating shaft, favourable installation is adjusted angle of attack device and is adjusted attack angle mechanism, due near rotating shaft, makes the radius of gyration reduce to minimum, path of travel shortening, must reduce the abrasion of adjusting each parts in angle of attack device, has simplified designing and making.
Although be vertical axis windmill, but still need be to wind yaw device.Because of the V-shaped layout design of blade, adjust angle of attack crank, adjust angle of attack guide rail to be arranged on spherical disk; The leeward semicircle outside of spheric disk connects tail vane, plays the effect of windage yaw boat, and guiding adjusts angle of attack device and blade to select at any time best wind direction position.
Adopt blade axis directly to connect and adjust angle of attack crank adjusting slip on angle of attack guide rail to carry out rotor blade, make blade rotation degrees of freedom large (surpass 360 °, meet at any angle and set) and more accurate; From structure, analyze, without the pair of more doing more physical exercises.Therefore have simple in structure, easy to manufacture, cost is lower; The advantages such as control in service is simple, rate of fault is lower, and maintenance expense is less.
Because the loads such as generator are arranged on wind energy conversion system foot, greatly reduce bearing height.Even can exempt supporting frame, the loads such as generator are directly installed on to building or massif top, greatly reduce cost and maintained easily maintenance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is wind energy conversion system structural representation of the present invention;
Fig. 2 is wind energy conversion system working principle schematic diagram of the present invention;
Fig. 3 is that wind energy conversion system of the present invention is to windage yaw boat System Working Principle schematic diagram;
Fig. 4 is a kind of guiding pair handle structure of wind energy conversion system of the present invention and working principle schematic diagram;
Fig. 5 is a kind of activity-oriented crank structure schematic diagram being linked by bearing pin of wind energy conversion system of the present invention;
Fig. 6 is wind energy conversion system H type blade schematic layout pattern of the present invention;
Fig. 7 is wind energy conversion system structure audio-visual picture of the present invention;
Fig. 8 is that wind energy conversion system of the present invention adopts two structural representations of adjusting angle of attack chute;
Fig. 9 is pneumatic equipment blades made principle of dynamics figure of the present invention;
Figure 10 is that wind energy conversion system of the present invention adopts leeward formula structural representation;
Figure 11 is a kind of structural representation of being adjusted angle of attack crank roller by the annulus hinge that floats of wind energy conversion system of the present invention;
Figure 12 is the local enlarged diagram of A portion in Figure 11 b.
Embodiment
For technical characteristics of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
Fig. 1, Fig. 7 show the structural representation of a preferred embodiment of the present invention, and in the present embodiment, this sustainable maintenance blade effective angle of attack formula vertical axis windmill is a kind of wind energy conversion system of three groups of blades 4, and Fig. 1 a is that plan view, Fig. 1 b are front views; Wherein, the quantity of blade 4 can arrange arbitrarily as required.Wind energy conversion system of the present invention comprises blade 4, supporting frame 3, output shaft 1, adjusts angle of attack device, to wind apparatus, flow guide device etc.
This output shaft 1 inserts independent rotation in frame axle sleeve 2, the upper end of output shaft 1 supporting frame 3 that is rigidly connected, and blade 4 bottoms are connected to supporting frame 3 outer ends by the V-shaped layout of axis of runner blade 5 and by rotating shaft; The top of blade 4 can arrange reinforcing ring 25(and see Fig. 7), this reinforcing ring 25 can play the effect that increases blade semi-finals degree.
The aerofoil profile of blade 4 is streamlined, and the leading edge 6 of blade 4 is that round end, rear portion are pointed prismatic blade; The mean camber line of blade 4 (see figure 2) that overlaps with the string of a musical instrument 7, therefore also claim symmetrical airfoil (or other favourable asymmetric aerofoil profile that can obtain equidirectional moment at upper and lower wind semicircle); Axis of runner blade 5 is arranged near the string of a musical instrument 7 blade 4 pressure center, cross section, and the axis of runner blade 5 about perpendicular rigid in lower end connect with the blade string of a musical instrument 7 and are approximately the tune angle of attack crank 8 of 90 °, adjust angle of attack crank 8 ends that roller 9 is housed vertically downward; In axis of runner blade 5 lower ends, adjust the angle of attack crank 8 tops lead angle pair handle 10(that also perpendicular rigid connects parallel with the blade string of a musical instrument 7 (or with adjust angle of attack crank 8 to have an appointment be 90 °) to see Fig. 4, Fig. 7).
See Fig. 1, Fig. 2, Fig. 7, the wind energy conversion system of the present embodiment is adjusted angle of attack device to comprise and is arranged on sphere rotating disk 11 circle tune angle of attack guide rail, tune angle of attack crank and driving regulation structure above, in the present embodiment, this adjusts angle of attack guide rail for adjusting angle of attack chute 13, intelligible, in some other embodiment, this tune angle of attack guide rail can be adjusts angle of attack single track, adjusts accordingly the claw shaped piece of angle of attack crank 8 for coordinating with this tune angle of attack single track.In Fig. 1 a, the center of circle of output shaft 1 and standard circular are adjusted the center of circle 16 both eccentric settings of angle of attack chute 13; Adjust angle of attack chute 13 to be placed on rotationally on sphere rotating disk 11; It is consistent that the diameter of adjusting angle of attack chute 13 and the elongation line of axis of runner blade 5 rotate the circle of being drawn on sphere rotating disk 11.Owing to adjusting the roller 9 of angle of attack crank 8 lower end to be placed in circular tune in angle of attack chute 13, roll and rotate, this structure makes the blade 4 of all positions in a work circumference all keep the identical angle of attack, produces constant output torque.Visible in figure, the more favourable standard round of spheric rotating disk 11 adjusts angle of attack chute 13 left-right rotation to carry out the adjusting vane angle of attack, and intelligible, in some other embodiment, this sphere sabot also can be taper sabot or plane sabot.
On described tune angle of attack guide rail, be provided with traveller 40, on described rotating disk, be provided with the arc chute 41 corresponding with described traveller 40, described arc chute 41 comprises take the multi-section circular arc connected in star that output shaft 1 is the center of circle, or be whole circular groove, being arranged in described arc chute 41 of described traveller 40 correspondences.
In the present embodiment, below adjusting angle of attack chute 13 and take rigidity on the circumference of the suitable diameter that output shaft 1 is the center of circle and link the traveller 40 of 3 (or more than 3), each traveller 40 inserts and is arranged on above sphere rotating disk 11, with lay on the circumference of traveller 40 same diameter and be slidably matched in corresponding one section of arc chute 41; In the appropriate location rigidity of adjusting angle of attack chute 13 1 sides, link and can push away (drawing) moving nut push pedal 17 by motor 14 rotating screw bolts 15.
Owing to adjusting angle of attack chute 13, a plurality of travellers 40 and the arc chute 41 that is slidably matched with it are all arranged on and take output shaft 1 on the center of circle, same radius circumference below, when motor 14 rotating screw bolts 15, when pushing away (drawing) moving nut push pedal 17 and moving, can drive and adjust angle of attack chute 13 integral body to rotate and (see Fig. 2 a) around output shaft 1; After adjusting the position of angle of attack chute 13 to change, roller 9 is driven and adjust angle of attack crank 8 and blade 4 to produce new pendulum angle around axis of runner blade 5, reach the object of blade 4 angles of attack, change wind energy conversion system moment and the rotating speed of all positions of synchronization regulation work circumference.
The benefit of this structure is: blade 4 does not need to change angle of attack angle in the intersection location of the upper and lower semicircle windward of a work circumference, thereby reduced attack angle of blade, changes the resistance bringing, and smooth running, rotating speed are improved.Certainly, circular adjust angle of attack chute 13 and roller 9 as use magnetic levitation technology instead be slidably matched and can reduce rotational resistance.
See Fig. 1, Fig. 2, Fig. 7, in the present embodiment, wind energy conversion system comprises spherical rotating disk 11 to wind apparatus and to wind mechanism, in the present embodiment, this is wind tail vane 12 to wind mechanism; Flow guide device comprises arc deflector 20, inverted L shape connecting rod 18, clamp 19.Spherical rotating disk 11 is contained in frame axle sleeve 2 outsides by bearing housing also can be around axis 1 independent rotation; The center of circle of the spherical shape of sphere rotating disk 11 and radius are three swing position on a cross section and forming by roller 9; Spherical rotating disk 11 leeward semicircular edge are outer, and to connect a kind of shape narrower and along blade 4 outsides, extend up to the wind tail vane 12 of blade upper end, wind tail vane 12 horizontal edge to the direction in the output shaft center of circle 1 be rigidly connected one end vertically insert above supporting frame 3, with the pit 21 of output shaft concentric in inverted L-shaped connecting rod 18; Clamp 19 is housed in the blade height of inverted L-shaped connecting rod 18 vertical sections, several pieces arc deflectors 20 of the blade rotary direction bending of semicircle alee of setting-in between clamp 19.Because inverted L-shaped connecting rod 18 lower ends are vertically inserted in the rolling bearing of pit 21, upper end and wind tail vane 12 be for being rigidly connected, therefore guide plate 20 and sphere rotating disk 11 can be by synchronous swing of wind tail vane 12 tractions, the variations of reply wind direction.Certainly, guide plate 20 also can adopt the other technologies mode adjusting angles such as electronic sensor and other installing and fixing method, thereby reduce wind tail vane weight, maybe can abandon L shaped connecting rod.
Fig. 2 is 1 group of blade in the angle of 6 diverse location angles of attack and adjusts the working procedure of attack angle of blade in good time.See Fig. 2 a, because traveller 40 inserts in arc chutes 41, slide, when motor 14 rotating screw bolts 15 and then pull nut push pedal 17, make to adjust angle of attack chute 13 to rotate counterclockwise around output shaft 1.Under the drive of the roller 9 now rolling in adjusting angle of attack chute 13, adjust angle of attack crank 8 and blade 4 to swing around axis of runner blade 5, blade 4 angles of attack of the work all positions of circumference are synchronously adjusted into larger negative angle of attack, on figure, the angle of attack is approximately-20 °.Now blade 4 work circumference windward before half cycle (Fig. 2 a left side) produce counter clockwise direction driving moment; When blade 4 turns to work circumference windward during second half (Fig. 2 a the right), blade 4 is still the identical angle of attack, and on figure, the angle of attack is approximately-20 °.But due to the guiding of arc deflector 20, wind is changed to the mobile (see figure 9) of blade 4 sense of rotation, according to aerodynamic force principle, in the same counterclockwise driving moments that produce of blade 4 of leeward semicircle.
As Fig. 2 b, when wind energy conversion system need to reduce rotating speed or moment, by motor 14 rotating screw bolts 15, promotion nut push pedal 17, make to adjust angle of attack chute 13 to rotate around output shaft 1 clockwise direction.Now, tune angle of attack chute 13 guide rollers 9 that position changes and tune angle of attack crank 8 be take axis of runner blade 5 as center of circle drive work circumference, this blade 4 produces new pendulum angle, the angle of attack windward of blade 4 is suitably diminished, work circumference the position of forward and backward semicircle windward windward the angle of attack all reduce to approximately-12 °, blade 4 produces anticlockwise moment in work circumference to be reduced thereupon, and rotating speed decreases.
As can be seen here, the round end leading edge 6 of the streamline vane 4 of wind energy conversion system of the present invention remains on upwind side always, and there is working procedure twice in a work circumference, almost on all positions of circumference, can produce same-direction-driving braking torque, and can adjust rotating speed and moment according to workload demand in good time, improve wind energy utilization, can more extensively adapt to the demand of different load.In figure, show, blade 4 does not just produce driving moment when only the highest in the drawings and lowest point is neighbouring.
Fig. 3 illustrates wind energy conversion system of the present invention working procedure to wind apparatus when change of the wind.When wind direction is during from figure left side (being shown in solid arrow), now, parallel with wind direction to wind tail vane 12 in Fig. 3 a, make spherical rotating disk 11 transfixions, tune angle of attack chute 13 in appropriate location, blade 4 has the favourable angle of attack of output drive strength square; When wind shift is during to Fig. 3 a lower left corner (seeing dotted arrow), wind tail vane 12 wind-engagings are tried hard to recommend to lifting in trend, and drive sphere rotating disk 11, adjust angle of attack chute 13 and arc deflector 20 etc. to take output shaft 1 as the center of circle, to turn in the lump the position of Fig. 3 b, when parallel with wind direction to wind tail vane 12, stop operating.From Fig. 3 b, although wind direction has changed approximately 45 ° (seeing solid arrow), adjust accordingly angle of attack chute 13 and arc deflector 20 etc. also to rotate thereupon, the angle of attack windward of blade 4 does not change, and still exports identical moment.So wind energy conversion system of the present invention can automatic accurate adaptation all directions be the wind comes from, and does not affect the normal operation of wind energy conversion system when wind vector completely.
Certainly, to wind mechanism, also can adopt other structural types, for example, Figure 10 is that wind energy conversion system of the present invention adopts leeward formula structural representation.This comprises the swing mechanism that vertical axis windmill integral body is swung with the wind to wind mechanism, this swing mechanism comprises the axle sleeve 33 that is fixedly connected on rotating disk windward edge one side, and the swing axis 34 that one end is arranged in axle sleeve, the other end is fixing.This structure has been abandoned phoenix tail vane, can simplified structure.
Fig. 4 illustrates a kind of guiding pair handle structure of the wind energy conversion system of the present embodiment and working principle.See shown in Fig. 4 a left side, left-most position in blade 4 forwards figure to, when 1 three of roller 9, axis of runner blade 5 and output shafts are point-blank time, the constraint that roller 9 can not modulated angle of attack chute 13 this moment take that lagging behind appears as axle center in axis of runner blade 5 or the situation (seeing arrow) of forward swing.When blade continues to turn to forward position, Fig. 4 a lower left corner, may occur two kinds of angles of attack: in figure, the blade of dot and dash line performance is the angle forming because of roller 9 forward swings, this is harmful angle of attack; In figure, the blade of solid line performance is the angle that lags behind and form because of roller 9, and this is the favourable angle of attack.
For overcoming above deficiency, need to point-blank time, blade 4 " be stirred " once to the correct angle of attack 1 three of roller 9, axis of runner blade 5 and output shafts.That is: in axis of runner blade 5 lower ends, adjust the angle of attack crank 8 lead angle pair handle 10(that perpendicular rigid connects approximately parallel with the blade string of a musical instrument 7 (or other with adjust reasonable angle that angle of attack crank 8 is vertical, can avoid three point on a straight line) to see Fig. 4, Fig. 1, Fig. 7 above), and the appropriate location on sphere rotating disk 11, on tune angle of attack chute 13 limits arranges lead angle slide block 22 and lead angle pair handle 10 be slidably matched (seeing Fig. 4 b).See Fig. 4 a right side, during near position blade is in the straight line of 3, the secondary handle 10 of lead angle and 22 sliding contacts of lead angle slide block, because stopping of lead angle slide block 22 forces blade 4 to swing to suitable angle; After roller 9 is crossed the secondary handle 10 in this harmful position, lead angle and lead angle slide block 22 and is disengaged, roller 9 and adjust angle of attack crank 8 to play once again the effect (seeing Fig. 4 a upper right corner, Fig. 4 b) of the guide blades angle of attack.See Fig. 2, the set position of the left and right sides of lead angle slide block 22 on sphere rotating disk 11 is different.
Fig. 5 is that the present invention adopts another kind of design of adjusting angle of attack crank 8, adjusts angle of attack crank 8 for a kind of structural representation that is flexibly connected guiding crank 8.The wind energy conversion system of foregoing V-type layout blade 4 is that rigid vertical and axis of runner blade 5 join because adjusting angle of attack crank 8, make to adjust angle of attack chute 13 grades to be arranged on and adjust on the approximately parallel ball cone of angle of attack crank 8 inclined-plane, this kind of layout may be given and be adjusted making and the installation of angle of attack device to make troubles.For this reason, propose a kind of axis of runner blade 5 is changed into by bearing pin 23 chain connections and being formed with the rigid joint of adjusting angle of attack crank 8; Tune angle of attack chute 13 is designed to plane device and is arranged on plane rotary disc 24 work.This kind of connecting means can make to adjust angle of attack crank 8 to swing up and down around bearing pin 23, still can be by adjusting angle of attack crank 8 band moving vanes 4 to rotate and adjust the angle of attack around axis of runner blade 5.
Fig. 6 is a kind of wind energy conversion system of H type layout, has simple in structure, the easy feature of making.But exist, adjust angle of attack chute diameter larger, roller 9 rotation paths are longer, may increase roller 9 abrasion.If adopt magnetic levitation technology to be slidably matched with adjusting angle of attack chute by roller, can capable of reducing friction resistance.
Certainly, blade layout also can be reverse V-shaped, H type, U-shaped, φ type etc.
Fig. 8 is that wind energy conversion system of the present invention adopts two angle of attack cranks of adjusting to coordinate two angle of attack sliding groove structure schematic diagram of adjusting.Fig. 8 a illustrates that 1 group of blade is in the working procedure of eight diverse locations of work circumference; This structure has been removed the secondary handle 10 of the tune angle of attack and lead angle slide block 22 from, simplifies the structure.In Fig. 8, the blade rotor 5 about perpendicular rigid in lower end connect two tune angle of attack cranks 8 that are mutually approximately 90 °.One of them adjusts angle of attack crank 8 ends that higher roller 26 is housed vertically downward, and it is 27 have more deeply to adjust in angle of attack chute 28 and roll and coordinate that higher roller 26 is placed in the center of circle; Another adjusts angle of attack crank 8 ends that shorter roller 29 is housed vertically downward, and it is to roll and coordinate in 30 more shallow tune angle of attack chute 31 that shorter roller 29 is placed in the center of circle.See Fig. 8, more deeply adjust angle of attack chute 28 and more shallow tune angle of attack chute 31 be a whole installation on sphere rotating disk 11, and by Electric Machine Control, around the whole left-right rotation of output shaft 1, carried out the angle of attack of adjusting vane 4.
Because of higher roller 26, put into and more deeply adjust angle of attack chute 28 to adjust rolling, shorter roller 29 to put into more shallow tune angle of attack chute 31 rollings, make high and low roller take their own roads, not interfere with each other; And because two tune angle of attack cranks 8 are mutually approximately 90 °, if one of them roller and blade rotor 5, output shaft 1 are point-blank time, because another tune angle of attack crank 8 that differs approximately 90 ° must be with the tune angle of attack chute of himself in smaller angle, therefore blade 4 there will not be harmful angle of attack.Although this structure has been abandoned the secondary handle 10 of the tune angle of attack and lead angle slide block 22, but still can stablize, control exactly and the angle of attack of adjusting vane.
Figure 11 is a kind of structural representation of being adjusted angle of attack crank roller by the annulus hinge that floats of wind energy conversion system of the present invention, and this structure can be omitted equally and adjust the secondary handle 10 of the angle of attack and lead angle slide block 22, simplifies the structure.Figure 11 illustrates a kind of three groups of blade wind motor structural principles.Together consult Figure 11, Figure 12, in adjusting angle of attack chute 13, lay and a kind ofly have and adjust angle of attack chute 13 together circle centers and by number of blade decile, be provided with the unsteady annulus 47 of jack 46, in the medial and lateral of the annulus 47 that floats respectively setting-in more than three steamboat 48 coordinate with the inwall rolling of tune angle of attack chute 13, to reduce rotational resistance; Certainly, in some other embodiment, also available other rotating manners, for example, the technology such as magnetic suspension, are arranged on rotationally and adjust in angle of attack chute 13 as long as reach the annulus 47 that makes to float; Each adjusts angle of attack crank 8 ends that roller 9 is installed, and inserts vertically downward rotationally in the jack 46 of opposite position on the annulus 47 that floats.Because roller 9 is positioned in jack 46 corresponding on the annulus 47 that floats, each blade adjusts angle of attack crank 8 to be subject to mutually at the uniform velocity drawing (pushing away) moving, makes blade avoid harmful angle of attack, reaches and abandons the object of adjusting the secondary handle 10 of the angle of attack and lead angle slide block 22.
Understandable, each technical characteristics of the holding device of above-described embodiment can combination in any be used and unrestricted.
Understandable, above embodiment has only expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can carry out independent assortment to above-mentioned technical characterstic, can also make some distortion and improvement, these all belong to protection scope of the present invention; Therefore, all equivalents and modifications of doing with the claims in the present invention scope, all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. a sustainable maintenance blade effective angle of attack formula vertical axis windmill, it is characterized in that, comprise output shaft (1), be fixedly connected with the supporting frame (3) that drives described output shaft (1) to rotate with described output shaft (1), be arranged on rotationally support frame as described above (3) go up and promote blade (4) that support frame as described above (3) drives described output shaft (1) to rotate, adjust the tune angle of attack device of described blade (4) angle of attack and drive described tune angle of attack device rotation to wind to wind apparatus;
It is described on wind apparatus and be the tune angle of attack guide rail of standard circular and at least one adjusts angle of attack crank (8) that described tune angle of attack device comprises that at least one is arranged on; Described tune angle of attack guide rail is around the axis setting of described output shaft (1); It is upper that described blade (4) is rotationally connected with support frame as described above (3), and one end of described tune angle of attack crank (8) is fixedly connected with described blade (4), and the other end is slidably arranged on described tune angle of attack guide rail; When slide in one end of described tune angle of attack crank (8) on described tune angle of attack guide rail, the other end drives described blade (4) to rotate and is constant in the tune angle of attack angle of blade (4) described in rotation.
2. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 1, is characterized in that, described to wind apparatus comprise the rotating disk (11) that is rotatably arranged on described output shaft periphery and drive described dial rotation to wind mechanism; Described tune angle of attack guide rail be take output shaft (1) on the described rotating disk of being arranged on of the center of circle, rotation.
3. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 2, it is characterized in that, on described rotating disk, be also provided with the tune attack angle mechanism for promoting to adjust angle of attack guide rail to rotate around output shaft (1) on described rotating disk, the center of circle of described tune angle of attack guide rail is prejudicially around the axis setting of described output shaft (1).
4. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 3, it is characterized in that, described driving controlling mechanism comprises three of being disposed on described tune angle of attack guide rail or three above travellers (40), is arranged on nut push pedal (17), the screw rod (15) of attaching nut's push pedal (17) and the motor (14) of connecting screw rod (15) adjusted on angle of attack guide rail; On described rotating disk, be provided with the arc chute (41) corresponding with described traveller (40), described arc chute (41) comprises take the multi-section circular arc connected in star that output shaft (1) is the center of circle, or be whole circular groove, what described traveller (40) was corresponding is arranged in described arc chute (41), and described traveller (40) is slidably matched with described arc chute (41); Described blade (4) is lift-type blade, comprises brachycephalic front end and pointed rear end, the on-stream weather gage that remains on of leading edge of the brachycephalic of described blade (4).
5. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 2, it is characterized in that, described blade (4) also comprises that one end of described tune angle of attack crank (8) is connected with described rotating shaft for being rotationally connected the rotating shaft of support frame as described above (3); Described rotating shaft also rigid connecting is connected to the secondary handle (10) of the lead angle paralleling with described blade (4) string of a musical instrument; On described rotating disk, be positioned at and adjust angle of attack guide rail one side to be provided with the lead angle slide block (22) being slidably matched with the secondary handle of described lead angle (10).
6. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 2, it is characterized in that, described at least one tune angle of attack guide rail comprises first, second tune angle of attack guide rail, it is indent guide rail that described first, second adjusted angle of attack guide rail, described first, second adjust angle of attack guide rail groove the degree of depth not etc., described first, second adjusts the center of circle of angle of attack guide rail not overlap; Described at least one adjust angle of attack crank to comprise that orthogonal first, second adjust angle of attack crank, described first, second adjusts angle of attack crank to adjust with described first, second coordinating that angle of attack guide rail moves respectively; Or,
Described at least one tune angle of attack guide rail is an indent guide rail, in described tune angle of attack guide rail, be provided with rotationally a unsteady annulus (47), described unsteady annulus (47) has together circle center with described tune angle of attack guide rail, on described unsteady annulus (47), be also provided with the jack (46) arranging by described number of blade decile, the end of described tune angle of attack crank (8) is arranged in described jack (46) and by adjusting angle of attack crank (8) to drive unsteady annulus (47) to rotate together described in described vane drive.
7. according to the sustainable maintenance blade effective angle of attack formula vertical axis windmill described in claim 5 or 6, it is characterized in that, between described blade, be provided with flow guide device, the air-flow of flowing through after described flow guide device with order changes direction and becomes deflection air-flow, described deflection air-flow promotes the blade blunt end of described rotating disk lee gauge, and makes lee gauge blade produce driving moment.
8. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 7, is characterized in that, described flow guide device comprises arc deflector (20), is connected to clamp (19) and the connecting rod at the upper and lower two ends of arc deflector; Described connecting rod penetrates upper and lower clamp (19), and it is upper that the lower end of described connecting rod is rotatably connected on output shaft (1), and the top of described connecting rod is fixedly connected with wind mechanism; Described is wind tail vane (12) to wind mechanism; Or,
The described swing mechanism that vertical axis windmill integral body is swung with the wind that wind mechanism is comprised, described swing mechanism comprises the axle sleeve (33) that is fixedly connected on rotating disk one side, and the swing axis that one end is arranged in axle sleeve, the other end is fixing (34).
9. sustainable maintenance blade effective angle of attack formula vertical axis windmill according to claim 5, it is characterized in that, described rotating disk is plane rotary disc, described tune angle of attack guide rail is plane device, and be arranged on rotationally on described plane rotary disc, support frame as described above (3) is parallel with described plane rotary disc, the axis (5) of described blade (4) and the perpendicular setting of support frame as described above (3); Or,
The axis (5) of described blade (4) forms an angle with support frame as described above (3) shape, the V-shaped layout of described blade (4), now, one end of described tune angle of attack crank (8) is slidably arranged on described tune angle of attack guide rail, and the other end carries out chain connection by bearing pin (23) and the rotating shaft of described blade.
10. according to the sustainable maintenance blade effective angle of attack formula vertical axis windmill described in claim 1-5 any one, it is characterized in that, described rotating disk is sphere rotating disk (11), traveller (40) on described tune angle of attack guide rail is arranged in the arc chute (41) of described sphere disk upper surface and rotates around take the described arc chute (41) that output shaft (1) is the center of circle, the axis of described blade and support frame as described above shape form an angle, and described blade is V-type layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213517.4A CN104214042B (en) | 2013-05-31 | 2013-05-31 | Vertical axis wind turbine capable of continuously keeping effective attack angle of blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310213517.4A CN104214042B (en) | 2013-05-31 | 2013-05-31 | Vertical axis wind turbine capable of continuously keeping effective attack angle of blades |
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| Publication Number | Publication Date |
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| CN104214042A true CN104214042A (en) | 2014-12-17 |
| CN104214042B CN104214042B (en) | 2017-02-08 |
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| CN201310213517.4A Expired - Fee Related CN104214042B (en) | 2013-05-31 | 2013-05-31 | Vertical axis wind turbine capable of continuously keeping effective attack angle of blades |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105134491A (en) * | 2015-07-03 | 2015-12-09 | 张效新 | Sliding rod type wind turbine blade adjusting mechanism |
| CN105927467A (en) * | 2016-07-06 | 2016-09-07 | 王维忠 | Mechanism capable of being driven by tailwind, dead wind and crosswind and moving device based on mechanism |
| CN106014761A (en) * | 2016-05-18 | 2016-10-12 | 西安交通大学 | Self-oscillation airfoil type generating set utilizing vortex shedding effect |
| CN108744357A (en) * | 2018-03-23 | 2018-11-06 | 福建省双龙消防科技有限公司 | It is a kind of can automatic accomodation idler wheel rotation cart type water-type extinguisher |
| CN112145341A (en) * | 2019-06-28 | 2020-12-29 | 泓星科技有限公司 | Vertical shaft type wind driven generator |
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| FR2291379A1 (en) * | 1974-11-13 | 1976-06-11 | Guis Paul | Wind driven turbine with vertical axis - has blades pivoted by rotor rotation mounted between two discs |
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| CN201635924U (en) * | 2010-01-19 | 2010-11-17 | 甘卫农 | Wind wheel with fan blade for adjustment |
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| FR2291379A1 (en) * | 1974-11-13 | 1976-06-11 | Guis Paul | Wind driven turbine with vertical axis - has blades pivoted by rotor rotation mounted between two discs |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105134491A (en) * | 2015-07-03 | 2015-12-09 | 张效新 | Sliding rod type wind turbine blade adjusting mechanism |
| CN106014761A (en) * | 2016-05-18 | 2016-10-12 | 西安交通大学 | Self-oscillation airfoil type generating set utilizing vortex shedding effect |
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| CN105927467A (en) * | 2016-07-06 | 2016-09-07 | 王维忠 | Mechanism capable of being driven by tailwind, dead wind and crosswind and moving device based on mechanism |
| CN108744357A (en) * | 2018-03-23 | 2018-11-06 | 福建省双龙消防科技有限公司 | It is a kind of can automatic accomodation idler wheel rotation cart type water-type extinguisher |
| CN108744357B (en) * | 2018-03-23 | 2021-03-19 | 福建省双龙消防科技有限公司 | Rotary cart type water type fire extinguisher capable of automatically containing rollers |
| CN112145341A (en) * | 2019-06-28 | 2020-12-29 | 泓星科技有限公司 | Vertical shaft type wind driven generator |
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| CN104214042B (en) | 2017-02-08 |
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