CN102003350B - Sail type vertical axis wind power generator - Google Patents

Abstract

The invention discloses a wind power generator and particularly discloses a sail type vertical axis wind power generator. The sail type vertical axis wind power generator is characterized in that a sail and a sail hoisting device are mounted on the periphery of a wind wheel; a mast centre O1 of the sail is revolved around a wind wheel center O; at the same time, the sail rotates around the mast centre O1 of the sail along the opposite direction; and a sheering device is mounted on the wind wheel. The sail type vertical axis wind power generator does no negative work at the direction against the wind so as to increase the rotor power coefficients. The theory numerical value thereof breaks through the Betz limit. The wind power generator is low in starting speed and high in cut-out speed, has long working time and high resource use ratio, and is mainly constructed on the ground in order to conveniently construct and maintain. The wind wheel of the wind power generator has no yawing force and utilizes the shifting by hoisting the sail.

Description

Wind surf type vertical shaft wind driven generator

(1) technical field

The present invention relates to a kind of wind generating unit, particularly a kind of wind surf type vertical shaft wind driven generator.

(2) background technique

At present, the vertical axis aerogenerator of prior art mainly contains two kinds of forms: a kind of is the S type wind-driven generator that utilizes wind resistance work, and advantage is that starting wind velocity is low, can be in low wind speed work, but its shortcoming lateral pressure is excessive, has a strong impact on complete machine safety.Another kind is to utilize airfoil lift work, and the symmetrical lateral pressure of its work moment is little.The common advantage of the vertical axis aerogenerator of prior art is: equipment is built on ground and is safeguarded that easily simply and not selecting wind direction to need not driftage controls.But its vital wound at first is when a leading side wind in the both sides of vertical major, and opposite side must be against the wind, so long as blade and rotor shaft are fixing, blade all equates in the wind direction area of contour of hand hay cutter and contrary side with the wind, just some difference of the two sides molded line of blade just produces moment, but it is inevitable that the contrary wind side is done negative work, so the wind-driven generator power coefficient of prior art is all very low.On the other hand, blade is fixed, and can not realize the kinetic energy of similar horizontal axis wind-driven generator blade displacement, can't change the wind-exposuring area of blade, when storm wind comes will face the calamity that machine is ruined temporarily.Therefore modern wind-powered electricity generation industry is rarely found a vertical axis aerogenerator, and especially large-scale unit has no use especially.

(3) summary of the invention

The present invention is in order to remedy the defective of prior art, provide a kind of wind wheel main shaft do not have lateral force, side is not done wind surf type vertical shaft wind driven generator negative work, that starting wind velocity is lower and cut-out wind speed is higher, power coefficient is higher against the wind.

The present invention is achieved through the following technical solutions:

A kind of wind surf type vertical shaft wind driven generator is characterized in that: the wind wheel periphery is equipped with sail and sail lowering or hoisting gear, the mast centre O of sail ₁Revolve round the sun around the rotation of wind wheel center O, sail is in the opposite direction around mast centre O simultaneously ₁Rotation is done in rotation, and yaw device is installed on the wind wheel.

This wind surf type vertical shaft wind driven generator, sail is realized displacement by the sail lowering or hoisting gear, and wind wheel is done positive work in the contrary wind side, and the lateral force of wind wheel is zero, and power coefficient is higher than horizontal wind power generator.Yaw device comprises the center bevel gear that is sleeved on the wind wheel, and center bevel gear is connected with the driftage actuating motor by gearwheel, small gear, worm gear, worm screw, realizes driftage control by the center of rotation bevel gear.Center bevel gear is the carrier of wind direction coordinate XY, follow the tracks of the direction of the wind comes from by the center of rotation bevel gear, when the direction of the wind comes from does not become, center bevel gear is static, when wind wheel rotates, bevel gear does planetary motion around center bevel gear, and bevel gear is by axle band dynamic bevel gear and bevel gear, so that sail is also done planetary motion.The sail lowering or hoisting gear comprises the lifting actuating motor that is installed in the wind wheel periphery, and the lifting actuating motor drives worm screw, worm gear, reel, pulley and hawser action, realizes being installed in the lifting of the sail on the mast, and the top of mast is provided with top cover.When the speed of the wind comes from a hour sail rises to increase kinetic energy, when the speed of the wind comes from is too large, fall the part sail, to reduce wind-force.Sail comprises sail plate and sail plate hinge, is provided with the guide ring gudgeon between sail plate hinge and the mast, and the structure of sail is collapsible, telescopic or rolling curtain type.

As everyone knows, sailing boat travels on the sea, also can travel against the wind against the wind, its principle is to adjust the angle of sail face and the direction of the wind comes from, and the sail of principle the present invention employing is according to the wind comes from direction according to this, by the regular movement of setting, so that the sail face is in the optimum state with the angular separation of the wind comes from, so that sail was both made positive work in a side with the wind, also make positive work in a side against the wind, without lateral pressure, thereby increase substantially power coefficient.Because contrary wind side of the present invention is also made positive work, thereby produce very large starting force, so the wind speed of starting is also lower.Sail of the present invention self is also rotating simultaneously, and opposite with the angular velocity of wind wheel, compare with horizontal axis wind-driven generator, and identical wind speed round, its outermost circle tip speed is lower.Therefore the breaking wind speed of wind surf type vertical shaft wind driven generator of the present invention is higher than the breaking wind speed of horizontal axis wind-driven generator, that is to say that cut-out wind speed of the present invention can be higher, early start and cut out evening, so that the operating time in the wind-driven generator 1 year increases, this has improved the utilization ratio of wind energy resources from another point of view.

The present invention is in order to realize the function of similar displacement, adopt the same lifting sail with sailing boat to change the wind-exposuring area of sail, the structure of sail can have three kinds of forms, the one, collapsible, the 2nd, telescopic, the 3rd, rolling curtain type can both be realized the lifting of sail, with the easiest folding enforcement, the rate signal control sail lifting actuating motor of origin wind, realized that sail changes lifting because of the speed of the wind comes from, the assurance wind-driven generator also avoids ruining because of storm wind the calamity of machine in optimum speed work.The present invention still keeps the pto＝power take-off of prior art vertical axis aerogenerator on ground, and key facility has the advantage of being convenient to build and keeping in repair easily on ground.But sail of the present invention has requirement in the face of the direction of the wind comes from, the vertical axis aerogenerator of prior art can be accepted the advantage that a direction be the wind comes from, in wind surf type vertical shaft wind driven generator of the present invention, do not exist, thereby the present invention must solve the driftage problem the same with horizontal axis wind-driven generator.

The invention has the beneficial effects as follows: this wind surf type vertical shaft wind driven generator, side is not made negative work against the wind, thereby power coefficient is improved, its theoretical numerical value can have been broken through the hereby limit of shellfish, the low cut-out wind speed of starting wind velocity of the present invention is high, the longevity of service resource utilization is high, and its key facility is convenient to build and maintenance on ground.The wind wheel of this wind-driven generator utilizes the sail lifting to realize displacement without lateral force simultaneously.

(4) description of drawings

The present invention is further illustrated below in conjunction with accompanying drawing.

Accompanying drawing 1 is the fundamental diagram of wind surf type vertical shaft wind driven generator of the present invention.

Accompanying drawing 2 is the kinematic scheme of wind surf type vertical shaft wind driven generator of the present invention.

Accompanying drawing 3 is the structural representation of Horizontal shaft aero-generator wind wheel of the present invention.

Among the figure, 1 mast, 2 pulleys, 3 hawsers, 4 top covers, 5 sail plates, 6 sail plate hinges, 7 guide ring gudgeons, 8,17 worm screws, 9,15 worm gears, 10 reels, 11 sail lifting actuating motors, 12,13,20 bevel gears, 14 small gears, 16 driftage actuating motors, 19 pto＝power take-offs, 21 center bevel gears, 23 wind wheels, 26 gearwheels, ω wind wheel angular velocity, ω 1 sail angular velocity, α wind wheel corner, δ sail corner, F sail active force, r moment radius, the stressed radius of R wind wheel.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present invention.This wind surf type vertical shaft wind driven generator is characterized in that: wind wheel 23 peripheries are equipped with sail and sail lowering or hoisting gear, the mast centre O of sail ₁Revolve round the sun around the rotation of wind wheel center O, sail is in the opposite direction around mast centre O simultaneously ₁Rotation is done in rotation, on the wind wheel 23 yaw device is installed.Sail is realized displacement by the sail lowering or hoisting gear, and wind wheel 23 is done positive work in the contrary wind side, and the lateral force of wind wheel 23 is zero, and power coefficient is higher than horizontal wind power generator.Yaw device comprises the center bevel gear 21 that is sleeved on the wind wheel 23, and center bevel gear 21 is connected with driftage actuating motor 16 by gearwheel 26, small gear 14, worm gear 15, worm screw 17, realizes driftage control by center of rotation bevel gear 21.Center bevel gear 21 is carriers of wind direction coordinate XY, follow the tracks of the direction of the wind comes from by center of rotation bevel gear 21, when the direction of the wind comes from does not become, center bevel gear 21 is static, when wind wheel 23 rotates, bevel gear 20 does planetary motion around center bevel gear 21, and bevel gear 20 is by axle 24 band dynamic bevel gear 13 and bevel gears 12, so that sail is also done planetary motion.The sail lowering or hoisting gear comprises the lifting actuating motor 11 that is installed in the wind wheel periphery, and lifting actuating motor 11 drives worm screw 8, worm gear 9, reel 10, pulley 2 and hawser 3 actions, realizes being installed in the lifting of the sail on the mast 1, and the top of mast 1 is provided with top cover 4.When the speed of the wind comes from a hour sail rises to increase kinetic energy, when the speed of the wind comes from is too large, fall the part sail, to reduce wind-force.Sail comprises sail plate 5 and sail plate hinge 6, is provided with guide ring gudgeon 7 between sail plate hinge 6 and the mast 1, and the structure of sail is collapsible, telescopic or rolling curtain type.

Describe in detail below in conjunction with accompanying drawing:

1, wind surf type vertical shaft wind driven generator contrary wind side of the present invention is not done solving of negative work.XY comes the direction coordinate in the accompanying drawing 1, and regularly it is relatively-stationary to the direction of the wind comes from, and its initial point O is the axle center of wind wheel, and Y is the direction of the wind comes from, X ₁Y ₁Be coordinate, its initial point is O ₁, O ₁Being the sail axle center, also is mast centre, and it is revolving round the sun with angular velocity omega around wind wheel axle center O point, and sail is then around O ₁With angular velocity omega ₁Doing rotation, the sail width is that B highly is H, the O on this wind wheel ₁Point begins turning over the α angle with angular velocity omega from X-axis, and sail is then with ω ₁Angle speed turns over the δ angle in rotation, and the angle of sail face width degree B and X-axis is with θ=α-8.Sail lift F is perpendicular to the sail face, and its size is the wind-exposuring area of sail and the product of wind pressure.

F＝PHBcosθ

Work moment M=r ₁F=r ₁PH Bcos θ r ₁=Rcos δ

Then have: M=RPHBcos θ cos δ

M＝RPHBcos(α-δ)cosδ

P comes wind pressure in the formula

Give above formula conditions setting: when α=180 °, M=0.Find the solution δ: solve: δ=α/2 substitution following formulas get:

$M=\mathrm{RPIIB}{\cos \left(\frac{\mathrm{\α}}{2}\right)}^2\·\·\·1$

Be positive forever from the visible moment M function take α as variable of formula 1, theoretical proof wind surf type vertical shaft wind driven generator of the present invention against the wind side is not made negative work yet.

2, solving without lateral force

The sail center of four quadrants of XY coordinate is respectively O among Fig. 1 ₁, O ₂, O ₃And O ₄, the lateral force of four quadrants is respectively F _X1, F _X2, F _X3And F _X4Center O according to first quartile shown in Figure 1 ₁, its lateral force is:

$F_{X1}=F\sin \mathrm{\δ}=\mathrm{PHB}\cos \frac{\mathrm{\α}}{2}\sin \frac{\mathrm{\α}}{2}\·\·\·2$

A pair of sail is the symmetrical installations of two sails, and a sail is inevitable at third quadrant at first quartile face another sail: the sail center O of third quadrant ₃O than first quartile sail ₁180 ° in advance, variable α should add at the angle 180 ° in the formula.

In the trigonometric function

Equal

And Equal negative

Therefore:

$F_{X3}=-\mathrm{PHB}\cos \frac{\mathrm{\α}}{2}\sin \frac{\mathrm{\α}}{2}=-F_{X1}$

F _X3+F _x3＝0

In like manner can prove the lateral force F of a pair of sail of external the second quadrant and fourth quadrant _X2+ F _X4=0, total lateral force F of wind wheel ₄Also just equal zero, prove that all its lateral forces of paired sail of wind surf type vertical shaft wind driven generator of the present invention also are zero.

3, the moment of wind surf type vertical shaft wind driven generator of the present invention is solving of constant

Wind surf type vertical shaft wind driven generator of the present invention, two sails of a pair of sail differ 180 °, jointly produce a moment M ₀: sail is paired.

M ₀＝M ₁+M ₂

Then:

Cause

So $M_0=\mathrm{PRHB}[\cos {\left(\frac{\mathrm{\α}}{2}\right)}^2+\sin {\left(\frac{\mathrm{\α}}{2}\right)}^2]$

Cause $\cos {\left(\frac{\mathrm{\α}}{2}\right)}^2+{\sin \left(\frac{\mathrm{\α}}{2}\right)}^2=1$

So M ₀=PRHB=constant

M ₀Be the moment that a pair of sail produces, establishing wind wheel has n to sail, then wind wheel moment M:

So M=nM is arranged ₀=nPRHB ... 3

Formula 3 does not have α, and the moment of theoretical proof wind surf type vertical shaft wind driven generator of the present invention does not change with α, but constant.

4, power coefficient solves

The power coefficient C of wind-driven generator _P, be the power N=M of wind-driven generator output _ωWith come kinetic energy

The ratio:

$C_P=\frac{N}{E}=\frac{2\mathrm{M\ω}}{\mathrm{\ρ}{\mathrm{SV}}_{\mathrm{\ω}}^3}$ Cause $\mathrm{\ω}=\frac{\mathrm{\λ}{V}_{\mathrm{\ω}}}{R}$

M and ω substitution are got

ρ is air density in the formula, and H is the sail height, and S is the wind wheel wind-exposuring area.

S＝HL ₁

Formula L ₁The wind wheel width that facings the wind, L ₁=2R+B/2, and establish B=KR and then have:

Substitution formula 4:

$C_P=\frac{2\mathrm{n\λ}}{\mathrm{\ρ}(\frac{2}{K}+0.5)V_{\mathrm{\ω}}^2}\·\·\·5$

Uncle exerts equation according to the stream mechanics:

$\frac{V_1^2}{2}+\frac{P_1}{\mathrm{\ρ}}=\frac{V_2^2}{2}+\frac{P}{\mathrm{\ρ}}$

V herein in the formula ₁Should be the speed V that the wind comes from _ω, P ₁The pressure of the wind comes from, herein P ₁Should be zero, V ₂Should be the speed V at sail center ₀, be the wind pressure of sail face and press P.

$\frac{V_{\mathrm{\ω}}^2}{2}=\frac{V_0^2}{2}+\frac{P}{\mathrm{\ρ}}$

$V_{\mathrm{\ω}}^2=V_0^2+\frac{2P}{\mathrm{\ρ}}$

And V ₀=λ V _ω

$V_{\mathrm{\ω}}^2={\mathrm{\λ}}^2{V}_{\mathrm{\ω}}^2+\frac{2P}{\mathrm{\ρ}}$

$V_{\mathrm{\ω}}^2(1-{\mathrm{\λ}}^2)=\frac{2P}{\mathrm{\ρ}}$

${\mathrm{\ρV}}_{\mathrm{\ω}}^2=\frac{2P}{(1-{\mathrm{\λ}}^2)}\·\·\·6$

Formula 6 substitution formula 5 are got:

$\mathrm{CP}=\frac{n(\mathrm{\λ}-{\mathrm{\λ}}^3)}{2/k+0.5}\·\·\·7$

7 couples of λ of formula are differentiated, make its grade zero obtain the large value of root

2(1-3λ ²)＝0

1-3λ ²＝0

$\mathrm{\λ}=\sqrt{\frac{1}{3}}=0.577350$

Substitution formula 7 obtains:

$C_P=\frac{n0.3849}{\frac{2}{K}+0.5}\·\·\·8$

The sail width B is that the phase mutual noninterference is that condition is tried to achieve when guaranteeing that two adjacent sails rotate with the Proportional coefficient K of the stressed radius R of wind wheel, and K is the function of the letter of n:

Formula 9 substitution formula 8:

Formula 10 does not have the limit, when n=50, and C _P=0.5952, begin to break through the hereby limit of shellfish, but this just manages numerical value, it does not have Practical significance, and the usable range of formula 10 is n=1,2,3,4 and 5

Sail logarithm n and the sharp coefficient C of corresponding wind energy _P

n	1	2	3	4	5
						K	2.8284	1.5307	1.0532	0.7804	0.6257
C P	0.3189	0.4261	0.4748	0.5024	0.5204

Practical n=2 and 3, C _P=0.4261 and 0.4748, at present the practical wind Wind Power Utilization system of horizontal axis wind-driven generator also is about 0.4, shellfish hereby the limit be expected untouchable.And practical power coefficient of the present invention can reach.Because formula 10 does not have the limit to improving the power coefficient leaving space, and wind surf type vertical shaft wind driven generator starting wind velocity of the present invention is low, cut-out wind speed is high, the longevity of service of working time ratio horizontal axis wind-driven generator, and actual wind energy utilization is higher than horizontal wind power generator.

5, minimum starting wind velocity Vt's solves.

The present invention is not because there is negative moment, and starting wind velocity is lower, the energy of be the wind comes from and be had by fluid mechanics:

$E=\frac{1}{2}\mathrm{\ρS}{v}^3$

ρ is air density, and S is the blade wind-exposuring area, by mechanics as can be known, and energy:

$N=\mathrm{FL}=F\frac{V}{t}$

T is the time in the formula, and F is the active force on the blade face, and P is the pressure that acts on the blade face, and S is blade area

$E=N=\frac{1}{2}\mathrm{\ρS}{V}^3=F\frac{V}{t}$

$F=\frac{1}{2}\mathrm{\ρS}{V}^{2}t$

$M=\mathrm{FR}=\frac{1}{2}\mathrm{\ρ}{\mathrm{SV}}^2\mathrm{tR}$

There is not structural factor in above formula, so vertical axis aerogenerator and horizontal axis wind-driven generator all are suitable for, wind wheel is the state of rest starting, should calculate by state of rest, with the starting torque M of wind surf type vertical shaft wind driven generator of the present invention _tStarting torque M with horizontal axis wind-driven generator _sCompare, and it is identical to establish the stressed radius R of wind wheel equal action time of t, then has

$\frac{M_t}{M_s}=\frac{V_t^2{S}_t}{V_t^2{S}_s^2}=G$

Suppose all identical then coefficient G=1 of the required starting torque of two kinds of wind-driven generators

$V_t^2{S}_t=V_t^2{S}_s$

$V_t^2=\frac{S_s}{S_t}{V}_s^2$

V in the formula _tAnd S _tRespectively the starting wind velocity of wind surf type vertical shaft wind driven generator of the present invention, and blade area, V _sAnd S _sBe respectively the starting wind velocity of horizontal axis wind-driven generator and the area of blade, the blade area of wind surf type vertical shaft wind driven generator of the present invention should be corresponding with sail logarithm n, and total n is to sail.

S _t＝nHB

R in the formula _tBe the stressed radius of sail type wind generator wind wheel of the present invention, and establish B=KR _t, H=3R _tIf, press n=2, then have:

S _t＝9.1842R ²

The blade area of horizontal axis wind-driven generator is that holding of paddle length L and mean breadth C is long-pending, and three paddles are arranged.

Ss＝3CL

C is horizontal axis wind-driven generator blade mean breadth in the formula, establishes C=0.15Rs and the Rs stressed radius that is Horizontal shaft aero-generator wind wheel, and establishes Rs=Rt and L=1.5RS.

$S_s=3\mathrm{CL}=3\×0.15\×1.5\×R_s^2$

$V_t^2=\frac{0.675R_s^2}{9.1842R_s^2}{V}_s^2$

Because stressed radius equates, so have

Vt＝0.271Vs

Conclusion be the starting wind velocity Vt of wind surf type vertical shaft wind driven generator of the present invention be horizontal axis wind-driven generator starting wind velocity Vs 27%.

6, solving of the highest cut-out wind speed

The maximum speed of wind wheel is limit by the component strength on the wind wheel, and the too high meeting of speed causes the damage of member.The most dangerous position is the wind wheel outermost circle, the A point of Fig. 1 and the A of Fig. 3 ₃Point is the most dangerous, because speed high centrifugal force in there is also maximum.

Among Fig. 1, the speed V of its dangerous spot A _A1

$V_{a1}=\mathrm{\ωR}-{\mathrm{\ω}}_1{R}_1=\mathrm{\ωR}-\frac{1}{2}\mathrm{\ω}\frac{\mathrm{KR}}{2}=\mathrm{\ωR}(1-\frac{K}{4})$

B=KR, and n=2, and K=1.5307 then has:

V _a1＝0.6173ωR

Its dangerous spot A among Fig. 3 ₃Speed V _A3=ω ₃L=ω ₃1.5R ₃

This V _A1A point ultimate strength speed, V _A3A ₃The ultimate strength speed of point is established A and A ₃Intensity is identical, then V _A1=V _A3And establish R=R ₃, A point and A ₃The ratio of speed should equal 1.

$\frac{V_{a1}}{V_{a3}}=\frac{0.6173\mathrm{\ωR}}{1.5{\mathrm{\ω}}_3{R}_3}=0.4115\frac{\mathrm{\ωR}}{R_3\mathrm{\ω}3}=0.4115\frac{V_t}{V_s}=1$

Vt=2.43 is then arranged

The maximum that wind surf type vertical shaft wind driven generator of the present invention can the bear speed of the wind comes from is twice above than the maximum speed of the wind comes from that horizontal axis wind-driven generator can bear.Wind surf type vertical shaft wind driven generator of the present invention starts than horizontal axis wind-driven generator is early; cut out evening; when wind speed is low; when horizontal axis wind-driven generator can't start; wind surf type vertical shaft wind driven generator has been worked when many; when wind speed is too high; horizontal axis wind-driven generator holds be can't stand when cutting out shutdown; wind surf type vertical shaft wind driven generator is also when work is many; so that equipment operating time within 1 year increases, improve power coefficient from another aspect, improve resource utilization; improve Utilization ratio, also improved the return rate of investment.

Wind direction coordinate Y-axis must be aimed at the direction of the wind comes from, and when the direction of the wind comes from has become, the XY coordinate also will be followed the tracks of the aspect of the wind comes from, and the center bevel gear 21 among Fig. 2 is the carriers of direction coordinate XY of the wind comes from, and the direction of the wind comes from has changed, and it also must be followed wind direction to rotate and realize driftage.

In order to adapt to the wind comes from variation of speed of wind field, the sail of wind surf type vertical shaft wind driven generator of the present invention will be realized changing and lifting with wind speed, sail 5 is enclosed within on the mast by guide ring gudgeon 7, can fold or extend by sail plate hinge 7, realize the lifting of sail, thereby realized the displacement function.

The gear number of teeth table of comparisons in the accompanying drawing 2 is as follows:

Number among the figure	8	9	12	13	14	15	17	20	21	26
											The gear number of teeth	1	100	40	17	20	40	1	34	40	180

7, operating movement

The wind comes from and blow sail 5, drive mast 1, mast 1 drives wind wheel 23 and rotates, and passes to pto＝power take-off 19, still need increase step-up gear before the generator.

In operation process, center bevel gear 21 was not static when the direction of the wind comes from became, and when wind wheel 23 rotated, bevel gear 20 was doing planetary motion around center bevel gear 21.This moves through bevel gear 13 and passes to bevel gear 12, so that sail is also done planetary motion, its speed ratio is

$i_1=\frac{40}{34}\×\frac{17}{40}=\frac{1}{2}$

The direction of its rotation and wind wheel direction of rotation.The rotating speed of having realized sail equals the negative 1/2 of wind speed round, i.e. ω ₁=-ω/2, δ=-α/2.

8, yawing rotation

Because wind surf type vertical shaft wind driven generator of the present invention has requirement to the direction of the wind comes from, expression coordinate Y must be consistent with the direction of the wind comes from from Fig. 1.Center bevel gear 21 among Fig. 2 is carriers of XY coordinate, when change of the wind, XY must follow the tracks of the direction of the wind comes from, flow direction vane records the information of the direction of the wind comes from, and processes through control system and connects driftage actuating motor 16, drives worm screw 17, worm gear 15, gearwheel 26 arrives center bevel gear 21, goes around when worm screw 17 according to the gear Tooth Number Calculation among the figure, and center bevel gear 21 once turns over.

9, sail elevating movement

Sail is the carrier of wind surf type vertical shaft wind driven generator energy of the present invention, the same speed of the wind comes from, the wind-exposuring area of sail is larger, the energy that sail absorbs is also larger, hour rise sail is to increase absorbed energy when the speed of the wind comes from, and the reduction sail is worked in rated power with assurance equipment when the speed of the wind comes from is excessive, when the speed of the wind comes from is too large, sail more reduces, to avoid disaster.When anemoscope records the velocity information of the wind comes from, in conjunction with load speed information, process through control system, connect sail lifting actuating motor 11 via worm screw 8, worm gear 9, reel 10, pulley 2 and hawser 3, promote or fall sail, sail lifting actuating motor 11 is selected 100 rev/mins speed-down servo motor, and drum diameter is designed to 400 millimeters of Φ, according to figure middle gear Tooth Number Calculation, the sail rising or falling speed is 1.25 m/mins of per minutes.

Claims (4)

1. wind surf type vertical shaft wind driven generator, it is characterized in that: wind wheel (23) periphery is equipped with sail and sail lowering or hoisting gear, the mast centre O1 of sail rotates around the wind wheel center O and revolves round the sun, sail rotates around mast centre O1 in the opposite direction and does rotation simultaneously, and wind wheel is equipped with yaw device on (23); Sail is realized displacement by the sail lowering or hoisting gear, and wind wheel (23) is done positive work in the contrary wind side, and the lateral force of wind wheel (23) is zero, and power coefficient is higher than horizontal wind power generator; Yaw device comprises the center bevel gear (21) that is sleeved on the wind wheel (23), center bevel gear (21) is connected with driftage actuating motor (16) by gearwheel (26), small gear (14), worm gear (15), worm screw (17), realizes driftage control by center of rotation bevel gear (21); Center bevel gear (21) is the carrier of wind direction coordinate XY, follow the tracks of the direction of the wind comes from by center of rotation bevel gear (21), when the direction of the wind comes from does not become, center bevel gear (21) is static, when wind wheel (23) rotates, bevel gear (20) does planetary motion around center bevel gear (21), and bevel gear (20) is by axle (24) band dynamic bevel gear (13) and bevel gear (12), so that sail is also done planetary motion.

2. wind surf type vertical shaft wind driven generator according to claim 1, it is characterized in that: the sail lowering or hoisting gear comprises the lifting actuating motor (11) that is installed in the wind wheel periphery, lifting actuating motor (11) drives worm screw (8), worm gear (9), reel (10), pulley (2) and hawser (3) action, realization is installed in the lifting of the sail on the mast (1), and the top of mast (1) is provided with top cover (4).

3. wind surf type vertical shaft wind driven generator according to claim 1 and 2 is characterized in that: when the speed of the wind comes from a hour sail rises to increase kinetic energy, fall the part sail when the speed of the wind comes from is too large, to reduce wind-force.

4. wind surf type vertical shaft wind driven generator according to claim 3, it is characterized in that: sail comprises sail plate (5) and sail plate hinge (6), be provided with guide ring gudgeon (7) between sail plate hinge (6) and the mast (1), the structure of sail is collapsible, telescopic or rolling curtain type.

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