CN1166858C - Wine-mill generator system driven by multiple-vane wind turbine - Google Patents

Abstract

The present invention relates to a wind power generator system driven by a multiple-vane wind turbine, which belongs to a wind power generator driven by a Yang style wind turbine. The present invention is composed of a wind turbine, a generator, an automatic control part, etc. A fan is composed of a plurality of main vanes, auxiliary vanes with the same quantity, and a plurality of vane disks. The fan is forward provided with an upwind angle, forms a fixed paddle angle structure, and then passes through a shaft to drive a rotor by a speed increaser. In a constant frequency mode, the method of quick response excitation is used for tracing changes of wind speed. The present invention has the characteristics of high efficiency of the fan, large power, high reliability and stable generation quality; compared with the existing wind power generator, the capacity of one wind power generator system driven by a multiple-vane wind turbine is increased by 3 times.

Description

The wind powered generator system that a kind of multiblade wind wheel machine drives

Affiliated technical field: the present invention relates to a kind of powerful wind generating unit, specifically is the wind powered generator system that a kind of multiblade wind wheel machine drives.

Technical background: the driving part-wind turbine of existing wind-driven generator, all adopt the structural design of traditional few fan blade: promptly the blade quantity that is adopted on the wind turbine seldom, the fan with higher rotational drives wind-driven generator.Such technology has following shortcoming:

1, existing wind turbine blade is few, and the blade of fan is as the basic element of character that receives wind energy, and its area and quantity produce directly influence to the efficient of wind turbine.Existing wind turbine is the rotating speed that covets, and ignores the most important factor-moment of fan, and blade quantity is reduced to bottom line, general three leaves or two blades of adopting of the wind turbine of existing generating usefulness.Wherein three-vaned wind energy utilization is about 21%～24%; Two blades are only about 13%～18%, because the wind energy acceptance rate is low, cause fan efficiency low, and the output torque is little.This factor makes generator capacity be subjected to severely restricts, and wind-power electricity generation is rested on the small-power level always.

2, existing wind-driven generator is in order to improve single-machine capacity, on the quantity of fan blade, do not try every possible means, but add linear leaf significantly, for example with more than the lengthened vanes to 50 meter, whole fan diameter is above 100 meters, such wind turbine blade tip can not be installed reinforcing ring again, and this class wind turbine is generally operational in the high wind field of force, causes that very easily fan blade takes place " flutter " and fracture.Poor reliability is also restricting wind-driven generator and can not move towards practicability and high-power.

3, existing wind-driven generator housing construction is bad, space utilization rate variance: unit total volume/generator body product moment, wind-driven generator with a 100KW is an example, inner generator only accounts for very little space, and speed increaser, clutch, break and commutator etc. have but occupied the most space of alternator assembly.

The structure of existing wind-driven generator can be referring to " aviation knowledge " 1994 the 8th interim " utilize wind energy, promote the well-being of mankind " literary compositions.

Meteorologist and scientist find that after having analyzed the AGCM of being set up the wind energy that the convection current air mass of low level air is comprised is very huge, and estimate the energy of being contained that can be the human use.In present renewable energy sources, it is ripe having only waterpower and geothermal power generation technology.But can be limited for the geothermal resources distributed pole of generating usefulness, can not form scale; And water power faces some environmental problems, causes silt deposit bottom of the reservior as soil erosion, and storage capacity reduces too fast, causes station capacity sharply to reduce.Therefore the various countries scientist still places hope on wind energy and solar energy, and diligent for this reason effort.

The purpose of this invention is to provide a kind of the deficiencies in the prior art that overcome, a kind of wind energy resources that makes full use of is provided, have the high-power wind power generation system that multiblade wind wheel drove of high wind-powered electricity generation conversion efficiency.

Summary of the invention:

The wind powered generator system that this multiblade wind wheel machine drives, it comprises by wind turbine, generator and controlling automatically etc. and partly forming:

A. its wind turbine is by many fan blade, compositions such as a plurality of blade supporting disks (leaf dish), rotating shaft.Between blade, connect each blade with reinforcing ring.Wind turbine sends electric energy by the rotor rotation that speed increaser drives generator.

B. in its generator part, adopting compact integrated power generation machine structure, is being exciter near fan one side.In air-cooled unit, at rotor shaft cooling fan is installed, cooling conditioner is equipped with at the rear portion; In fan heat radiation and intercooling cycle system, coolant pump and infusion pump and distributor are installed, on generator casing, wind speed is installed, wind direction detection device and commutator, hydraulic pressure, braking and locking device and the clutch of seeking wind direction.

C. in automatic control partly, adopt electronic computer to manage and control generator operation, and between rotor, stator and commutator and the special opto-electrical transmitting device of iron tower joint employing.

Generator is made up of several big parts: the fan blade of wind turbine, and the stator of cover plate, clutch and speed increaser, exciter, generator, rotor, cooling unit, base and the steering gear, these several major parts are as shown in figure 12.Generator casing also is a stator casing, and speed increaser, clutch all are installed on the inside of generator front end.

Fan on the described wind turbine, for obtaining wind power efficiently, adopted the multiple-blade structure, in order to obtain maximum intensity, adopted leafy dish and decided the vane angle structure.

Fan blade is as the unique element that receives wind energy, and what of the size of its area and quantity directly affect the reception of wind energy, and for the form of blade, as lift-type or resistance type, the difference on the two efficiency is also little.Therefore the ratio of the fan blade gross area and wind turbine swept area has directly determined the height of wind turbine efficient.

According to this theory, the wind energy acceptance rate of wind turbine should meet following formula:

The power that wind-force acts on fan can probably be expressed as:

$P=\frac{1}{2}{\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="C9911739200252.png,C9911739200271.png"\; state="\{\{state\}\}">V</figure-callout>}}^3\mathrm{\&rho;\&xi;Fn}---\left(2\right)$

Because the wind of wind turbine is imitated and square being directly proportional of fan footpath, also follow the area and the quantity n of blade to be directly proportional, so the wind power that fan obtains can illustrate with following formula, and further can be expressed as:

$P=\left(\frac{1}{2}{V}^3{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">L</figure-callout>}}^2\mathrm{\&xi;}\stackrel{\&OverBar;}{w}\mathrm{\&rho;}\right)n---\left(3\right)$

V is a wind speed in the formula, m/s; L is a length of blade, also is the fan radius R, is m; ξ is a constant here, is 0.41; W is the mean breadth of the taper of blade, is m; ρ is the air density coefficient, and the air density with the sea level in this formula is 1; N is a blade quantity.

Following formula can be found the solution with numeral.For example do not knowing under the situation of generator power, only given length of blade L according to wind turbine, width w and quantity n just can obtain the power of this wind-driven generator.Now use the examination of (3) formula to ask the large-scale wind driven generator of one 2 leaf slurry of California, USA.This machine is built in nineteen forty-one, 53 meters of fan diameters, i.e. and R=L=26.5 rice, when wind speed 14m/s, unit output 1250kw power.This machine blade is wide to be about 1.6 meters; If ρ is 1 on the sea level; And when 2000 meters of height above sea level, be 0.92, in the time of 3000 meters, be 0.89; And about 300 meters of this machine infield height above sea level, ρ ≈ 1.

Obtain the power that every blade can obtain earlier, promptly ask the part in the parantheses earlier.With above-mentioned data substitution (3) formula:

P＝(1/2×14 ³×26.5 ²×0.41×1.6×1)×2

＝(1/2×2744×26.5 ²×0.41×1.6×1)×2

＝(1,372×702.12×0.41×1.6×1)×2

＝(963,418×0.41×1.6×1)×2

＝(395,001×1.6×1)×2

＝632,001×2

＝1,264,003(w)

Every leaf slurry of this machine can obtain about 632,001 watts of power when the wind speed of 14m/s, this machine is 2, can obtain 1264,003 watts altogether, and promptly 1264 kilowatts power is suitable with this machine actual capacity basically.As can be seen from the above equation, the blade quantity relation should be a relation in parallel, so represent the quantity of blade with n.Every power of this machine is 632kw, obtain the quantity that 6-7 power doubly just can be installed the 6-7 sheet more.Above-mentioned formula is at Fig. 4 curve " flex point " effectively anterior, but " flex point " after then owe accurate.

According to (1) formula, the percentage that wind is imitated is:

$E_F=\frac{\frac{1}{2}{\mathrm{<figure-callout\; id="3"\; label="V"\; filenames="C9911739200252.png,C9911739200271.png"\; state="\{\{state\}\}">V</figure-callout>}}^3\mathrm{\&rho;}{\mathrm{<figure-callout\; id="3"\; label="R"\; filenames="C9911739200252.png,C9911739200271.png"\; state="\{\{state\}\}">R</figure-callout>}}^3\mathrm{\&xi;}\stackrel{\&OverBar;}{w}\mathrm{<figure-callout\; id="3"\; label="n\; V"\; filenames="C9911739200252.png,C9911739200271.png"\; state="\{\{state\}\}">n</figure-callout>}}{V^{}}\&times;100\%---\left(4\right)$

(4) formula is directly to calculate the equation that wind is imitated.

Because wind turbine can only obtain partly wind power in the wind-force field, how much this part wind power can reach, and can illustrate with Fig. 3.Wind speed V on the figure ₁Be air intake; V ₂Be the air-out behind the fan.Under two states, the work done of fan is zero: work as V 1. ₁-V ₂, promptly work as V at=0 o'clock ₁=V ₂The time, wind can not made any merit to fan, because wind speed V ₂Not decay, the expression fan does not have or only has the blade of few area, the unblocked arrival of wind back, wind can not have work done substantially.

2. work as V ₂=0 o'clock, represent that at this moment fan does not have wind, the expression fan is obstructed, and the work done of fan also is zero.

Relevant this argument can be referring to accompanying drawing 3.In the curve of Fig. 4, two rotating speed of fan is 0, but along with blade area and quantity increase, the power on the wind turbine is just in rising trend, but at this moment the rotating speed of fan is then on a declining curve, and this point also slows down with the increase of blade, as shown in Figure 5.Consider the two curve development, therefore these two factors should be taken all factors into consideration when the design wind turbine.But wherein blade area and quantity are main factors.And rotating speed is a secondary cause.Therefore from Fig. 4 also as can be seen, after blade area arrived some, the wind turbine power increase was not really remarkable, but rotating speed descends obviously, when rotating speed dropped to zero, the output power of fan also was zero.Therefore the front portion at Fig. 4 line top is exactly the optimum value of fan blade quantity.Here V ₁And V ₂Only be meant the ratio of wind speed, establish V ₁Be 1, V so ₂Can be 0.4～0.25.For single-stage fan, V ₂Can be made as 0.4～0.3; For multistage fan, this coefficient V ₂Can hang down to 0.25.As the conversion power that becomes a common practice, 1/2 after just should being multiplied by cube.Therefore the lingering remnants of past customs power behind the fan is:

${\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">P</figure-callout>}}_2=\frac{1}{2}{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}^3\mathrm{\&rho;\&pi;}{R}^2---\left(5\right)$

The total output P of fan ₁For:

${\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">P</figure-callout>}}_1=\frac{1}{2}{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}^3\mathrm{\&rho;\&pi;}{R}^2---\left(6\right)$

Therefore the wind of wind turbine is imitated and is compared F _ECan be expressed as:

Therefore, wind is imitated and is compared F _EFor:

$F_E=\frac{P_1}{P_2}---\left(8\right)$

So $F_E=\frac{\frac{1}{2}{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}^3\mathrm{\&rho;\&pi;}{R}^2}{{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}^3\mathrm{\&rho;\&pi;}{R}^2}---\left(9\right)$

Obviously, above-mentioned wind is imitated and is compared F _ERatio big more, expression wind turbine wind is imitated just high more.Therefore, be used for estimating the whether power saving of an air-conditioning as " Energy Efficiency Ratio " in the air conditioner, " wind imitate than " equation (9) also is the important analytical method of estimating the receiving efficiency height of a typhoon turbine.

Conversely, will be multiplied by percentage after upper and lower the exchanging of (9) formula, also can try to achieve the percentage of fan receiving efficiency.The first step is asked tail wind V earlier ₂Power percentage, that is:

${\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">P</figure-callout>}}_2\%=\frac{\frac{1}{2}{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}{{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}\&times;100\%---\left(10\right)$

Wind turbine wind is imitated E then _fObtain with following formula:

$E_F=100\%-\frac{\frac{1}{2}{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}{{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}\&times;100\%---\left(11\right)$

Two kinds of above wind are imitated in the analysis equation group, and equation (3), (4) and (7), (8) are contradiction not, and be unified.After through formula (8), (9), (10), equation (11) has been got back to (4) again, just analyzes wind efficacious prescriptions formula from different angles.

As obtain the efficient E of wind turbine at first with above-mentioned formula _FAfter, obtain the monolithic efficient E of every blade more respectively _f:

$E_f=(100\%-\frac{\frac{1}{2}{{\mathrm{<figure-callout\; id="2"\; label="V"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">V</figure-callout>}}_2}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}{\frac{1}{2}{{\mathrm{<figure-callout\; id="1"\; label="V"\; filenames="C9911739200244.png,C9911739200252.png"\; state="\{\{state\}\}">V</figure-callout>}}_1}^3\mathrm{\&pi;}{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="C9911739200232.png"\; state="\{\{state\}\}">R</figure-callout>}}^2\mathrm{\&rho;}}\&times;100\%)/n---\left(12\right)$

Like this, just the wind of wind turbine is imitated and analyze and to have come into plain view.Above-mentioned (12) formula goes up " flex point " front portion effectively to Fig. 4 curve.

It is the peculiar basic theory of the present invention that above-mentioned wind is imitated the theoretical equation group, for the present invention has established theoretical foundation.Be used to illustrate the wind energy efficiency problem of wind energy conversion system.

Because the theoretical and existing wind turbine wind of above wind-force acceptance rate is imitated theory contradiction to some extent, particularly imitates theory with the wind of existing tip speed ratio Dr/V and clashes, so used certain length to set forth this theory in specification of the present invention.Tip speed ratio Dr/V weighs and assesses the basic foundation that wind turbine wind is imitated at present.This theory thinks that rotating speed r is most important, and has ignored the moment F of wind turbine.

Described wind turbine adopts single fan structure, and fan is installed in the generator front end, is the increase receiving area, and adopts primary blades (1) and staggered installation of back blades (2) to reach this purpose.Partly be separately installed with 2-4 road reinforcing ring (3) in the outer end of fan blade, make each blade on fan, connect into an integral body, in case flutter takes place in strong wind blade.

Described wind turbine leaf dish adopts a plurality of leaf dishes to come the supports fan blade: wherein on the staggered respectively leaf dish (8) that is installed in separately of primary blades (1); Back blades (2) is installed between primary blades and primary blades, and reinforcing ring (3) connects the major-minor blade respectively.According to capacity motor in, in the small-power unit, can adopt 1～3 leaf dish; In big capacity wind-driven generator, because of blade weighs, moment of torsion is too big, the load that the leaf dish is born is very big, in order to disperse load, big capacity unit has adopted a plurality of leaf dishes to share the mode of load, this leafy dish and use major and minor blade, or only be called poplar formula wind turbine with primary blades and the wind turbine that adopts reinforcing ring to form, be mainly used in the large, medium and small power wind-driven generator among the present invention.

The described type of cooling has two kinds: a kind of is air cooling way, and another kind is interior cold mode.In air cooling way, adopt fiberglass blade, and in generator, adopt inner air closed-circuit and cooling conditioner to finish the cooled interior air.In interior cold mode, then come with metal hollow radiator shutter, and in axle and in the stator and rotor hollow lead, offer cooling passage, carry cooling liquid with coolant pump.

Described major-minor blade (1), (2) are main load-carrying construction by skeleton ploughshare head wedge (9).In fiberglass blade, skeleton constitutes main load-carrying construction by 2-3 root Ultrafort Steel box beam (10), and the horizontal ribs of a leaf (11) of burn-oning, and constitutes skeleton.And skeleton is placed on filling plastic foam (12) in the mould; wrap up the composite material (13) of one deck epoxy one carbon fiber then; at the thin aluminum alloy outer cover (14) of the outside of blade parcel one deck, this layer covering mainly protects composite material not by erosion by wind and rain, and the conduction lightning protection at last.The similar lifting airscrew technology of the manufacture method of relevant blade belongs to known technology, no longer narration.

The structure of skeleton is with above-mentioned the same in the metal hollow radiator shutter.But coated outside is not glass fibre reinforced plastic material, but aluminum alloy or titanium alloy covering also are formed by connecting by zinc alloy solder " diffusion welding ".Box beam double as cooling passage in the skeleton is finished circulation by pendular ring (16) circulation cooling liquid.

Described air-cooled unit adopts the strong cold blast device of inner circulating air and cooling conditioner two-part to form.Two ends at electric machine main shaft (17) are equipped with cooling fan, in the iron core and wire casing of stator and rotor, all have radial and axial two kinds of integrated type air channels.Generator capacity is big more, and the air channel is many more, and circulating wind cold junction structure belongs to known technology inside the Pass having, and no longer the way is stated.Air filter (18) is housed on the main wind passage in motor, and behind the air-cooler (19) of the vaporizer composition of process refrigeration air-conditioner, passes through an aft-fan (20) again and deliver to each stator and rotor air channel.

Described refrigeration air conditioner compressor is made up of condenser (21), ventilating fan (22), air condition compressor (23), heating power expansion valve (24), vaporizer (air-cooler) (19) etc.Condensation radiator (21) is installed in around the tail.In the space of ventilating fan (22) back, compressor is fixed on the support of commutator end bearing support bracket.

Described inner-cooled generator set is to adopt fluorocarbons to make freezing mixture, for insulation and the withstand voltage properties that improves motor, adds a spot of sulfur hexafluoride gas in fluorocarbons.Inner-cooled turbines vane radiator (1), (2), ripple sealed pipe (25), (26), coolant distributor (27), stator and rotor hollow winding, coolant pump (28), liquid delivering pump (29), stator liquid delivering pump compositions such as (30).Because stator and rotor are cold in realizing with the hollow lead simultaneously, therefore can be described as by " dual-liquid inner-cooling formula wind-driven generator ".

In the cowling (7) of fan front end, filter (31) is installed, cooling air pump (28), infusion pump (29).The ripple liquid return pipe (26) of the hot gas that comes from generator through second, between one-level speed increaser and the clutch (32) enters air pump (28), delivers to the fan radiator.Liquid coolant behind the fan radiator enters filter (31), and siccative is arranged in the filter, as silica gel or molecular sieve, filtering wherein moisture content, after enter distributor (27) through total liquid delivering pump (29), three grades of fluid bellowss (25), enter stator then; Another little part enters rotor hollow lead after then directly entering rotor fluid house steward (33).Tail end at the lead of rotor has back liquid house steward (34).Returning liquid house steward (34) communicates with the fluid passage (35) that returns of axle.A solution feed pump (30) is installed in the stator end of incoming cables.One of infusion pump connects distributor, and the other end meets feed flow house steward (33).Distributor (27) be a garden shape double-deck box, be fixed on the bearing bracket stand of main shaft afterbody.Be back liquid chamber (37) near bearing one side, the back is liquid outtake chamber (38).Liquid outtake chamber's mouth is exactly a center hole, and this hole links by the liquid outlet of one section bellows (39) with the axle head mouth, to isolate with time liquid chamber.Liquid outtake chamber links to each other with the solution feed pump (30) of stator with a strip metal pipe, and solution feed pump connects the transfusion house steward of stator, to the staor winding feed flow.Then time liquid chamber by another root metal tube and distributor and stator go back to liquid house steward UNICOM and finish back liquid the liquid that returns of stator.As seen, distributor is to be used for the coolant distribution in total fluid passage in the axle is removed critical component of circuit to stator.

In order to prevent that distributor from sewing, being equipped with one in bearing (40) back of main shaft has individual seal arrangement (41), and this device is made of nylon ring and " O " type cushion rubber.

Liquid feeding end at stator has an infusion pump (30), to increase the stator flow quantity; Just centrifugal force and the liquid delivering pump on the fan (29) by rotor finished circulation in rotor.

On the axle two transfusion roads are arranged: a transfusion road, another is back fluid passage.Because of the stator heat dissipating capacity in 6 times of rotors, therefore change, the ratio of the fluid passage sectional area of stator is 1: 6, and axle is defeated, to return the fluid passage sectional area be 1+6=7.

In the transfusion structure of stator and rotor, hollow core conductor all with " connected in electrical series ", " freezing mixture parallel connection ", connecting mode.Relevant technologies similar " turbo-generator with inner water-cooled stator and rotor " technology belongs to known technology, no longer narration.

Above-mentioned coolant distribution ratio also will lean on the distribution infusion pump (30) on the stator to guarantee the correct of allocation proportion except this ratio of sectional area.On generator casing, a liquid storage bottle (42) also is installed, in order to add freezing mixture.Interior cold mode is mainly used in large-scale wind driven generator, and is installed in desert area, is used to irrigate by lifting water to a higher level with a water pump, etc.

Described wind turbine fan blade does not adopt the variable vane angle mode of existing fan blade, decides the vane angle blade but adopt, and when designing on the leaf dish, just vane angle is fixed on the best angle.Because hand over the intensity of vane angle blade, well below deciding the vane angle fan, under high-power condition, be to be difficult to improve reliability, and become mechanism's complexity of vane angle, not easy-maintaining.Decide the blade angle fan and have very high specific strength.

Described wind turbine is to adopt a multi blade fan in the present invention, but its wind receiving efficiency is not low.According to Young wind efficacious prescriptions journey, it is not to increase rotating speed r that wind can act on the fan, but increases the wind turbine moment of torsion.According to momentum conservation law: P=MV=mv, can obtain a following formula that is used for the momentum torque conservation of rotating torques:

P·L ₁·r ₁＝P·l ₂·r ₂

Here P is the force, and L is meant arm of force length, and r is a rotating speed.Total moment of momentum is that the three is long-pending; In substitution the present invention, the length of blade of wind turbine is exactly L so ₁, P is the active force P point at end of blade place, r ₁Being elementary rotating speed, also is rotation speed of the fan.Equation the right is exactly the torque power P after speedup ₂Through the input tooth arm on the generator shaft after the speedup is l ₂, l ₂Be the radius of motor shaft input gear, r ₂Be the axle rotating speed, visible wind turbine power P after speedup is still constant.The difference of the present invention and contrarotating generator is: the present invention is a desk fan, and wind-force field total output is work done on the fan in front all; And be the two-stage fan to transmitting motor, front fan receives only few part wind power, finishes work done for the first time, and most wind-force carries out secondary-working to aft-fan after passing front fan once more.Its wind turbine efficient all depends on the area and the quantity n of blade.

Described fan diameter is very big, and blade is many, and rotation speed of the fan is also lower, but the moment of wind turbine is very big.In order to obtain necessary rotating speed, must low speed, high pulling torque speedup be become this work of finishing at a high speed by speed increaser.At the input end of fan shaft, a clutch (32) is installed, so that when maintenance, can disconnect power.For the first order increases increasing into end of band device, after first order speedup, rotating speed increases to n behind clutch output shaft ₁Doubly, become n by middle carrier gear (43) with the second level speedup of central shaft gear (44) again ₂Doubly, rotating speed just increases into n ₁* n ₂, gap bridge tooth (45) is elementary in the middle of the central shaft secondary gears and the second level increases to n with this rotating speed again ₃, total rotating speed of this one-level is n ₁* n ₂* n ₃, at this moment secondary gears generator shaft (17) gear of the second middle gap bridge tooth links to each other, and rotating speed is increased n ₄Doubly, at this moment total speed increasing ratio is n ₁* n ₂* n ₃* n ₄=Nr times, so the speed increasing ratio of these 4 grades of speed increasers is 1: n ₁* n ₂* n ₃* n ₄, n is a speed increasing ratio.

Described speed increaser also can adopt three grades of speed increasers of non-coaxial line, as shown in figure 23 except that can adopting the coaxial line planet gear speed increaser.Fan shaft through wearing piece clutch (115) after first in the middle of carrier gear (43) and second the centre carrier gear (45) rear driving electric machine main shaft (17).Speed increasing ratio is 1 altogether: n ₁* n ₂* n ₃

Described generator partly is the secondary excitation, and exciter is installed in the generator front end, and the first order is magneto exciter (46), and the second level is AC exciter (47), and encouraging the machine back in friendship then is generator.Adopting the rotating rectifier controllable silicon to respond the excitation of being sent by computer fast on excitation mode instructs to adapt to the air quantity variation.

Described commutator is made up of chassis (48), base (49), steer motor (50) and worm gear (51), worm screw (52).Base (49) is installed in below the generator casing.The hollow steel pipe (53) of a section for " T " font is installed below chassis (48), as for rotating shaft, bearing (54), (55) is installed respectively in the rotating shaft, wherein thrust bearing (54) is 1 dish, and (55) are two dishes.This three dishes bearing all links to each other with base; On the edge, chassis (48), be provided with four road collector rings (56), be respectively A, B, C three-phase and zero line.Below collector ring, lightning-arrest metal ring (57) is installed, it links to each other with lightning-arrest brush (58), and lightning-arrest brush links to each other with the earth by lead.Two steer motor (50) are installed on base, and motor is symmetric arrays, and turns to by worm reducer drive generator.This two motors rotation direction is opposite, makes it commutator and is even moment rotation.Between base and the chassis sealing cover is installed, in case dust enters.

Snail retarder on the described steer motor (50) is a kind of rolling type worm reducer.Motor reel is a hollow worm screw, above car the ball screw groove is arranged, hole of bead (59) is gone back at each one at groove two ends.When ball worn passed through ball (60) with worm gear (51) transferring power, just by groove motion slowly, with worm-gear driven, ball entered in the quill shaft by the hole of front end ball simultaneously, is recycled in the groove by the axle metapore.So just common friction transmission is become the rolling transmission, improved reliability greatly.

Described hydraulic brake and lock are made up of hydraulic-pressure pump (63), oil pipe (64), solenoid valve (65), braking grinding disk (66), brake shoe (67), actuator (68) and lock (69).Hydraulic-pressure pump (63) is installed in the enclosure below.Be attached thereto by two steel oil pipes, an end of oil pipe (64) is pressed solenoid valve (65), and the solenoid valve the other end connects the oil cylinder on the brake shoe (67).Brake disc (66) is installed on the generator shaft.Lock (69) is installed on the shell, and lockhole is corresponding with clutch (32).

Hydraulic brake and lock also are used to overhaul generator and use except that being used for accident emergency.Lock also is used for turning round simultaneously when electric power generator group starts, and finishes synchronously accurate.When then being used to overhaul the speed increaser case, clutch can disconnect the fan torque.

Described wind speed, wind direction detection device are: first wind finding device is installed on the generator, and wind finding device is installed on the iron tower for the second time.Wind direction, wind speed detection limit are installed in to be surveyed on the air hardening steel pipe (70), and wherein the wind direction detector is after driving the last contactless locator of axle (72) rotation with weathercock (71), utilize the some current potential measure wind-driven generator and the wind comes between angle; The wind speed detection limit also can be installed in to be surveyed on the airduct, drives a tachometer generator (74) rotation by a little windmill (73), and the height of speed measuring motor output voltage is represented the height of windmill rotating speed.The wind direction detector is made up of many Hall elements (75) and a permanent needle.Concrete structure is in the interior lower end of a garden tube, along circumference 30-60 Hall element (75) is installed, and the Hall element that the weathercock axle drives the needle sensing induces electric current, measures the angle of weathercock according to this.

A, B, three one-chip computers of C are installed in the described automatic control partly finish the setting of detection, index and the operating function of each parameter of generator respectively; power-off protection, communication each other; and and the power station master control room between communication, so just formed a micronet.Whole operating functions of A computer realization and parameter are set, and transducing signals such as the output voltage of generator, electric current, frequency, phase sequence, winding temperature rise, wind direction, wind speed are accepted in its sampling.Export control signal corresponding, and finish the communication between same B, the C computer; The B computer is installed on the inner rotor shaft, realizes that rotor detects, control excitation intensity, and finish the Other Engineering parameter sampling, control etc. of exciter.The C computer is installed in the control cabinet in the control room under the tower, and the instrument of finishing generator and relevant Control Parameter thereof shows.Realize and A computer and power station master control between data communication, and accept the various relay protection signals that A computer and power station Master Control Room are sent.Finish the overcurrent of stator, rotor, overvoltage, winding temperature rise, frequency, phase place step-out, under-voltage every relay protection and demonstration, and the hydraulic braking of generator, function such as lock, unblank.

The working power that the generator optional equipment is used be by a miniature transformer with the voltage of stator, in any one be phase-changed into low pressure, offer these optional equipments.These equipment are: the switch in steer motor, electronic computer, the control room, instrument, storage battery.Storage battery is as standby power supply, for the said equipment provides standby power supply.

The rotating speed of described generator adopts computer and logical dual mode to control.1, controls the output voltage of generator by silicon controlled exciting voltage U.Concrete grammar is: after coming to compare with the electrical network phase angle according to the size of air quantity, the silicon controlled excitation amount of regulating rotating rectifier again with the regulator generator output voltage, is regulated rotating speed.This adopts with existing wind-driven generator and becomes vane angle to turn speed different, because the vane angle of blade is fixed among the present invention.For example: 1. when the wind comes from when too big, generator speed begins to rise, and this moment, excitation strengthened, and output voltage grows tall, and this machine load increases the weight of, and rotating speed is tending towards descending; Otherwise rotating speed is tending towards rising.2. advance when air quantity continues to rise, computer begins to assign steering order according to the arrangement of program, makes generator leave the direction of the wind comes from, to receive only air quantity.Because the generator quality is heavier, the variation of fitful wind can not influence rotating speed.Can come comparison phase angle voltage with same phase sequence, try to achieve phase angle difference.As A is the A phase of circuit, and A ' is the A phase of the motor of generator.Two groups of voltage U A, UA send into computer after A/D converter converts digital signal to and compare through sending into after the mutual inductor step-down.Its phase angle difference can have following formula to represent:

±ΔUsinθ＝UAsinθ-UA′sinθ

In the formula: Usin θ is that voltage phase angle is V/sin θ °;

UA ' sin θ is θ ° of generator voltage V/sin;

Δ Usin θ is both phase angle differences.

When Δ Usin θ is timing, represent that generator phase is leading, air quantity increases, and this moment, excitation should strengthen, and rotating speed descends; When being negative for Δ Usin °, the expression generator phase lags behind, and air quantity reduces, and excitation should reduce, and rotating speed begins rising.When being zero for Δ Usin °, represent that the two is accurately synchronous, excitation is constant.

Above-mentioned secondary control methods can only constant frequency, but can not constant voltage, and voltage has certain fluctuating with the wind, but can be controlled at ± 2% in.After being incorporated into the power networks with electrical network, this voltage functuation is just eliminated, can not appear in the net.When walking abreast, just should support independent operating with a cover energy storage and bucking-out system with diesel electric power plant.

In the described automatic control technology, adopted the photoelectric figure transmitting set.Shell inner face at the generator speed increaser is equipped with several photoemissive elements (76) and photoelectric receiving tube (77), photoelectric receiving tube and emission tube are on the staggered axle that is installed in behind the brake grinding disk, and on the shell inner face, when the shell laser diode was launched, the receiving tube on opposite is work just; When epitrochanterian laser diode was worked, laser tube stopped on the shell, and receiving tube is then worked.

A photoelectricity adapter (78) is installed on base (49), so that the every floor data of stator and rotor is delivered in the following control room (79), the structure of this photoelectricity adapter is formed by rotating part and fixed part.Upper part is the rotary laser tube, dress signal driving amplifier (80) in the tube, preamplifier (81), two pairs of infrared light diodes (76), (77).Below the rotary laser tube, be stationary magazine creel.The laser rotating cylinder is fixed on the chassis axle of generator, and following fixed light tube then is fixed on the worm gear cover, and base then is fixed on the iron tower (5).Its working principle is: after driving amplifier (80) amplification of serial signal in turn tube (82) that the A computer transmits, sending into infra-red laser diode (76) carries out---the light conversion, shine on the following back photoelectric receiving tube (77), become the digital current signal again, after amplifying through preamplifier, send into along cable in the C computer in control room (79) and go; Vice versa.Deciding, move a tube photodiode respectively is the Second Mate, two every pair: make the emission infrared rays for one, another then is used to receive the infrared rays next to surface launching, and optical signal is transformed into current signal.

The described exciter first order is permanent magnet excitation machine (46), the permanent magnet excitation machine, and AC exciter is sent in the interchange of output.Rotating speed of the present invention is by excitation control, so the rotating rectifier on the main shaft (17) must respond from increasing of sending of B computer fast with controllable silicon, subtracts, demagnetization instructs.To adapt to the variation of wind-force in the wind field.

The present invention has following advantage compared with the prior art:

1. fan efficiency height, owing to adopted multiple-blade, large diameter fan, at same diameter, with under the wind condition, the wind energy acceptance rate improves greatly, on average is higher than 3 times of existing wind power station.

2. the fans dish has adopted a plurality of leaf dishes that blade is installed, and blade is securely fixed in all Ye Panshang, make wind turbine efficient when significantly improving, reliability does not only reduce, increase on the contrary, this makes generator that the non-maintaining operation of long time can be arranged, and has improved the power station operational efficiency, has reduced maintenance cost.

3. adopt air-cooled generator to have that cooling system is simple, reliability is high, blade is light, the specific strength height of blade, low cost of manufacture, the unit that is suitable for large, medium and small each capacity, the most area except that the desert can both be used, and can be used for being thought the area that wind-force is too low by existing theory.

4, adopted the integrated power generation set structure, made the generator unit structure compactness, the generator volume accounts for 70%, and is more many than the specific volume raising of existing wind-driven generator.

5, adopted light, mechanical, electrical integrated automatic control structure.Avoided the low shortcoming of reliability.

6, with diameter prior three-blade propeller wind driven generator compare, the wind of air-cooled unit is imitated and has been improved 3-4 doubly, but manufacture cost only increases by 2.5 times, and pure benefit improves 1 times, but long-term beneficial effect can reach tens times, and same scale power station takes up an area of few 70%.

The structure of the above-mentioned critical piece that has is identical with the contrarotating wind-driven generator, also can be simultaneously with in the present invention, air-cooled Environmental Conditions of the present invention and internal cooling generator are different: be mainly used in the wind environment that cleans of air, this environment is a lot of in Northeast China and coastal nearly inland region, as the Tianchi in Jilin Province, Qinghai-Tibet Platean and southeast; Interior cold unit then is mainly used in area, Gobi desert, desert, for example: NW China and arid area, the Middle East, be used for irrigating by lifting water to a higher level with a water pump, etc. and large-scale desalination of sea water, will will receive an acclaim in these areas.Wish that first state-of-the-art wind power station appears on the Chinese soil in the world.

Description of drawings:

Fig. 1. the overall appearance plan view of wind power generating set of the present invention.

Fig. 2. the outward appearance side view of wind power generating set among the present invention.

Fig. 3. the air intake V of explanation wind effect principle in the wind turbine among the present invention ₁With air-out V ₂Between the wind energy efficiency graph of a relation.

Fig. 4. the plotted curve among the present invention between the quantity n of wind turbine blade and the wind energy receiving efficiency.

Fig. 5. the graph of a relation among the present invention between wind turbine rotating speed r and the blade quantity n.

Fig. 6. electronics locator structural representation among the present invention.

Fig. 7. fan blade, leaf dish structural drawing among the present invention.

Fig. 8. the unfolded drawing that put in order of fan primary blades on each leaf dish among the present invention.

Fig. 9. the axial top rake of each leaf dish and fluid passage circulation schematic representation among the present invention.

Figure 10. the structural drawing of fiberglass blade among the present invention.

Figure 11. generator air intercooling cycle structural representation among the present invention.

Figure 12. the overall construction drawing of air-cooled generator in this courage.

Figure 13. the ball type worm speed reducer structural drawing of commutator among the present invention.

Figure 14. level Four speed increaser and driving section mechanical schematic among the present invention.

Figure 15. the Local Area Network of computer automatic control system and photoelectricity ring structure among the present invention.

Figure 16. the structural drawing of photoelectricity adapter among the present invention.

Figure 17. clutch is in conjunction with schematic representation among the present invention.

Figure 18. clutch disconnects schematic representation among the present invention.

Figure 19. fan radiator and inner-cooled unit cooling schematic representation partly among the present invention.

Figure 20. the structural drawing of distributor among the present invention.

Figure 21. the overall construction drawing of fan heat radiation and interior cold unit among the present invention.

Figure 22. excitation electrical schematic diagram among the present invention.

Figure 23. the air-cooled wind-driven generator structure schematic representation of three grades of speed increasers among the present invention.

Embodiment: embodiment 1

Referring to specification book accompanying drawing 1-18.

This wind powered generator system is made up of a multiblade wind wheel machine and generator (4).The fan of wind turbine is installed in the generator front.Fan drives the speed increaser rotation by leaf dish (8) and axle (83) through clutch (32), through outputing power to after 4 grades of speedups on exciter (46), (47) and the generator shaft (17), drives the generator amature rotation then.Cooling partly adopts air-cooled circulation and air conditioner refrigerating to finish.

Fan has adopted the multiple-blade mode, and blade is made up of primary blades (1) and back blades (2), and primary blades (1) utilizes ploughshare head wedge (9) the ripple ditch of blade root portion to inject in the wedge hole of leaf dish separately, and blade is arranged in order in order, as Fig. 7, shown in Figure 8.The leaf dish can be 1-6, improves the structural strength of leaf dish with this structure.Back blades (2) all is installed between every, and major and minor blade is staggered and installs.Connect with 2-4 road reinforcing ring (3) leading, pay between the blade, to add the structural strength of strong wind fan.Back blades (2) length only accounts for 35%-40%.

Every leaf dish can be installed 5-10 sheet primary blades (1), and the order of every leaf dish is that preliminary election designs, and the blade of each dish also is to design by separately dish, can not get wrong during installation.Every leaf dish has an inclination angle for the direction of the wind comes from, and first of front dish is minimum, and successively backward, each leaf dish inclination angle is increasing, so just makes the blade angle that turns forward, and to guarantee blade the enough intensity of facining the wind is arranged.This structure as shown in Figure 9, the blade tip that finally makes each blade is on the axial direction parallel at the blade tip of the first leaf dish, as shown in Figure 2.

The structure of fan blade is by the plastic foam of skeleton (12), and epoxy---carbon fiber (13) and thin aluminium parcel (14) constitute.Wherein skeleton is to be made of the hollow box beam (10) of the superpower steel of 2-3 root and horizontal ribs of a leaf (11), as shown in figure 10, has the hole on ribs of a leaf, with weight reduction.In the space of skeleton, be filled with foamed plastics (12).On foamed plastics (12), be enclosed with one deck preimpregnation formula epoxy one carbon fiber tape (13), be covered with layer of aluminum skin (14) at the blade outermost, at blade pitch blade root 70% place hollow reinforcing ring (3) is installed, reinforcing ring can be the 1-4 road, in the middle of reinforcing ring flat flange plate is arranged, the flange plate on both sides connects with bolt, forms a complete fan assembly.Back blades also adopts the structure identical with primary blades, only is that length is shorter, and does not have ploughshare head wedge.

Fan also can be formed the wind turbine of all being made up of primary blades with 1-5 leaf dish except the mode with above-mentioned major and minor blade installation, this wind energy engine blade taper of being made up of primary blades also is equipped with 1-4 road reinforcing ring (3).

The root of blade is equipped with ploughshare head wedge head, and ups and downs rill is arranged on the wedge head, utilizes this rill that the wedge head is stuck in the wedge hole, as shown in figure 10 firmly.The manufacturing process of above-mentioned blade and lifting airscrew resemble process.

In the present embodiment, all have radial and axial two kinds of air flues in stator and rotor iron core and the wire casing, cooling fan (20) all is installed, on main wind passage, be equipped with air filter (84) and air-cooler (19) be installed at afterbody at the two ends of main shaft.Many fins are installed on the air-cooler, and it is actually a vaporizer forming cooling conditioner, innerly makes refrigeration agent with freon or fluorocarbons or ammonia.Outside at the afterbody of unit is installed with condenser (21), ventilating fan (22), air condition compressor (23) and heating power expansion valve etc.Superheated refrigerant after the compression of the compressed machine air-cooler (19) of flowing through after condenser (21) heat radiation of afterbody is with the hot air in the cooling motor.As shown in figure 12.The working principle schematic representation of whole air cooling unit as shown in figure 11.

At base and turn to driving part to become the base commutator of generator mutually by chassis (48), base (49); On the axle (53) of chassis (48), worm speed reducer is installed.Downside on the chassis be equipped with section for the hollow steel pipe (53) of " T " font as rotating shaft, 2 dish cods (55) and are installed in the rotating shaft coil large-scale thrust bearing (54).The vicarious axial and radial stress of bearing generator of this three dish.On the chassis, be provided with four road collector rings (56), draw A, B, C and zero cross streams respectively.Be provided with four brushes (85) in corresponding with it outside, brushgear housing is installed on the base (49), to draw electric energy.Below collector ring, lightning-arrest ring (57) is installed, it links to each other with lightning-arrest brush (58), and the brush holder line connects the earth by iron tower.2 steer motor (50) are installed on base, and motor is symmetric arrays, and turns to by worm speed reducer drive generator.These two motor rotation directions are opposite.Outside between base, the chassis is equipped with sealing cover, enters to prevent dust.

Worm speed reducer on the steer motor (50) is that a kind of rolling type worm screw subtracts retarder, as shown in figure 13.Motor reel is a hollow worm screw, and the ball screw groove is arranged above, and the groove two ends respectively have one to go back to the hole of bead (59).When worm screw passed through ball (60) with worm gear (51) transferring power, ball just was recycled in the spiral chute by side opening behind the axle.So just common friction transmission has been become the rolling transmission.At the helical worm place, be equipped with a ball cover (86) and be fixed together with motor.One pair of dustproof encloser is installed on worm speed reducer, is divided into cover (61) and covers (62) down.Cover is fixed on ball cover and the motor housing up and down.Last cover is equipped with O-ring seal (87) with T profile shaft connecting place, and the mesopore of lower cover is the safety barrel of fixed light electric commutator (88) then.Moving tube (82) then injects in the mesopore of T profile shaft.Retarder is all used grease lubrication.

Hydraulic brake is by hydraulic-pressure pump (63), oil pipe (64), solenoid valve (65) braking grinding disk (66), and braking tellurium (67), actuator (68) are formed.Oil pump (63), oil pipe (64), solenoid valve are installed in the chest, and chest then is installed on the shell.Braking grinding disk (66), be installed on the rotor shaft, actuator then is installed on correspondingly the enclosure.Hydraulic locking device (69) is installed in the shell corresponding with braking plate.Lock (69) also is made up of solenoid valve, actuator (89), dead bolt.The dead bolt of lock promptly gets out a hole corresponding on the clutch (32) on lock collar, dead bolt can be stretched into wherein.As shown in figure 12.When generator is braked and after decelerating to certain speed, lock just begins to enter working state, generator is locked.Said apparatus also has the manual function of backup except having automatic startup, manual function is installed under the tower in the control room, for maintenance man's operation.

The clutch of generator is the spline axial clutch, is made up of clutch bowl (32), shift fork (105), hydraulic actuator (68).Shown in Figure 17,18, under the responsive to axial force of clutch bowl at shift fork, clutch begins to disconnect with fan main shaft (94); When needs during in conjunction with overdrive gear, shift fork is reverse motions, when at this moment using brake adjustment speed increaser rotating speed consistent with rotation speed of the fan, just is easy to clutch bowl is led on input shaft and the output shaft.As shown in figure 17.The clutch bowl inner face has spline, with the same size of groove on the axle of both sides.When mainly being the maintenance overdrive gear, clutch provides convenience.Certainly, if the speed increaser reliability is very high, also can be without clutch.

Speed increaser is to be made of 4 grades of overdrive gears; Behind the first order gear train clutch, form first order speedup with the first cover gap bridge planet tooth (43), a back gear of planet tooth links to each other with the center carrier gear, forms the second level; Center carrier gear and second pair of gap bridge planet tooth (45) are formed the third level, and the gear of the back of this planet tooth links to each other with gear on the generator shaft again then, and composition fourth stage speed increaser is so that generator reaches the regulation rotating speed.As shown in figure 14.Whole speed increaser grease lubrication.

A wind finding device respectively is installed on generator and tower.Wind finding device is equipped with the sensor of wind direction, measuring wind speed by there being one to survey air hardening steel pipe (70) on the steel pipe.It is not really high that generator is surveyed airduct length, as long as measure wind direction.Another pair of anemoscope is installed on the iron tower, just outside the radius of fan, as shown in Figure 1.The wind direction detector is made up of wind vane (71) and detection potentiometer (72), and this locator is a contactless magneto potentiometer.Go up many Hall elements (75) and be arranged in a circle in electroprobe, the weathercock axle drives a little permanent needle (90) and rotates, and the Hall element below the needle is the expression direction of the wind comes from just.Hall in the middle of the locator does not have part " zero setting " in computer, and the angle of being represented by weathercock deducts and just obtained the angle that generator is answered deflection after " zero ".

Because of multiblade wind wheel machine of the present invention is bigger to the decay of the wind comes from, the wind speed of fan is not necessarily accurate, lean on the tachometer on the iron tower that direct wind speed is provided.Wind speed blows a little windmill (73) and drives a tachometer generator (74) rotation, and speed measuring motor can be an analog or digital, and the height of the rotating speed of windmill is represented in the voltage of output or digital pulse.

Cross when low when wind-force, the voltage that generator produces, the frequency of output all will be lower than the electrical network standard, at this moment power station and grid disconnection.

The automatic control of native system has partly been adopted three computers to form miniature Local Area Network and has been controlled automatically.Their working procedure is as follows:

The A computer is a main control computer, mainly manages setting, the calculating of whole operating functions and each parameter of stator of generator, sends instruction simultaneously and gives B, C computer, also these parameters are delivered to the C computer and finish demonstration, and the transmission of a plurality of relay protection signals.Simultaneously, accept the signal that relevant power station master control room that the C computer sends here is sent, finish calculating wind direction, air quantity, frequency, phase angle, voltage, electric current, winding temperature rise etc.And control these parameters.Its single-chip microcomputer employing bus is 16 CPU.

The B computer is the single-chip microcomputer of one 16 bit CPU, in order to each duty parameter of detection rotor.These parameters have detections such as the temperature rise, the short circuit of rectifier temperature rise winding earth of electric current, voltage, each winding of exciter.And finish communication by light-electric Digital Transmission and A computer after these data are become digital signal.This machine also will be born the stator voltage that the A computer transmits, and is transferred to the B computer through A/D converter, and sends into by this machine in the controllable silicon of rotating rectifier and remove to control exciting voltage.

The excitation amount is after calculating air quantity by the A computer according to the wind speed size data to be sent into the B computer, the angle of flow of the one-way SCR of rotating rectifier carries out high-speed excitation control on the B computer quick control axle then, so that the stator output voltage is directly proportional with air quantity, combine with turning to simultaneously, so that generator constant speed, constant frequency.The excited work principle as shown in figure 22.

The C computer is installed in the control cabinet under the tower.Also form by the single-chip microcomputer of one 16 bit CPU.Main responsible instrument demonstration, relay protection, the braking of generator parking maintenance.When faults such as stator and rotor short circuit, overcurrent, overvoltage, phase place step-out occur; after by the A computer these trouble signals being delivered to the C computer; carry out relay protection by the C computer; and trouble signal is presented on the instrument in control room under the tower; be transferred to the power station master control room simultaneously; the master control computer also will show, report to the police and print these faults, and send halt instruction.

Light has been adopted in communication between above-mentioned A, the B computer---and electricity receives, the emitting diode assembly is finished.These assemblies are formed a garden loop wire array by infrared diode and are realized.Promptly be installed in a garden type adapter ring and form by emission tube (76) and receiving tube (77) are staggered, rotor photoelectricity garden ring group is installed on the axle (17), and stator adapter ring (91) is installed in corresponding shell inner face.

The above-mentioned automatic control system of forming by computer form miniature Local Area Network and light---electrical switching device is seen shown in Figure 15.

For fear of thunderbolt, native system has also designed lightning conductor (90) at random, is installed in generator central authorities.The lightning conductor bottom is a hollow steel pipe, and gold passes steel pipe with lead, is connected on the circle copper ring of one below the chassis (57); A lightning-arrest brush (58) is installed on base to be attached thereto; The other end of brush connects the earth by lead, and lightning arrester as shown in figure 12.

The structure of master control cable is that a photoelectricity adapter is installed on the top of cable, and the photoelectricity adapter as shown in figure 16.The top of this adapter is the rotary laser tube, driving amplifier (80) is housed, preamplifier (81), two pairs of infrared light diodes in the tube.Below the rotary laser tube, be fixed laser tube (88), the laser rotating cylinder is fixed on the chassis (48) of generator, and following fixed light tube then is fixed on the worm gear guard shield (62), as shown in figure 12.Its working principle is: after driving amplifier (80) amplification of serial signal in rotary drum that the A computer transmits, send into infrared laser diode (76) and enter light one electricity conversion, shine on the following photoelectric receiving tube (77), become the digital current signal once again, after amplifying through preamplifier, send into along signal cable in the C computer in control room (79) and go.Photodiode respectively is 2 pairs: make the emission infrared rays for one, and the another receiving infrared-ray, and optical signal is transformed into electrical signal.Otherwise, when the serial digital signal that the control room is sent here also goes in the A computer to go through above-mentioned inverse process.

Embodiments of the invention 2.

Referring to Figure of description 1-11, Figure 13, Figure 15,16, Figure 22, Figure 23.

Embodiment 2 only is speed increaser and clutch partly with embodiment 1 difference.This example adopts three grades of non-coaxial line speed increasers and friction lamella clutch, as shown in figure 23.Fan shaft (17) is through wearing piece clutch (115) the rear driving first order overdrive gear carrier gear (43) rear driving second carrier gear (45) rear driving generator shaft gear and axle (17) in the middle of first.Cooler (19) is installed in the generator top, and axial ventilation, does not have lock simultaneously.As shown in figure 23.Other are partly the same with embodiment 1, no longer narration.

Present embodiment is used for medium and small wind-driven generator.Can be used for outlying sentry post, island etc., be mainly used to provide power supply and be used for desalination of sea water with electrodialysis system after supporting, its efficient is 6 times of solar distilling method.

Embodiments of the invention 3.

Referring to Figure of description 1-9, Figure 13-21.

Embodiment 3 only is that with embodiment 1 difference cooling partly.This example adopts the interior cold wind turbine hollow blade radiator that adds of stator and rotor hollow core conductor to finish cooling.By hollow blade (1) and leaf dish (8) and axle formation radiator, form connecting body by double-ply bellows (25), (26) and distributor (27), lead to the hollow core conductor of stator and rotor by confession, time liquid collecting pipe (33), (34) of stator and rotor, and carry cooling liquid of each part by total liquid delivering pump (29), stator pumps (30) and coolant pump (28).

Hollow blade box beam except that making structure-bearing, the circulation cooling liquid of holding concurrently.Ploughshare head wedge is communicated with defeated liquid return pipe: the leaf dish is as be even number, and then 1,3 etc. is drain pipe or liquid return pipe singly, and 2,4 is liquid return pipe or drain pipe; The leaf dish is an odd number, then goes out, liquid return pipe all just has.Shown in Fig. 7,8,9, blade is assigned also and is assigned by certain blde pitch.Blade slightly portion 2-3 road reinforcing ring (3) is arranged, there is 1-2 road cooling pendular ring (16) lower end.Major and minor blade (2) structure is identical, the staggered installation, and have each ring to connect, as shown in Figure 7, primary blades is used for connecting cooling liquid.Wherein a slice is a fluid, adjacent two are back liquid, go out, return the staggered Ye Panshang that is installed in of liquid, the gaseous state cryogen of sending through stator, liquid return pipe (34) enters distributor (27), axle track, the gaseous state cryogen of sending here with rotor converges, and behind bellows 3,2,1, enters coolant pump (28), is transported in the odd-numbered blade and goes, behind the number blade, be cooled to liquid state, drying filter (31), pump (29).Deliver in the distributor of a tail through the liquid pushing tube in the bellows 1,2,3, some enters liquid outtake chamber (38) again, and another partly enters rotor.The cryogen that enters liquid outtake chamber is sent into the feed flow house steward and is entered in the stator conductor through stator liquid delivering pump (30), and that enters rotor partly also enters in the rotor wire through rotor manifold (33).Behind the cooling stator and rotor, get back to back liquid manifold (34), at this moment freezing mixture gasifies, and stator returns liquid and returns liquid chamber through distributor and collect to enter and return liquid with rotor in the axle track and converge, and enters in the coolant pump (28) through bellows 3,2,1, pump into blade once more, finish circulation next time.The cold spots schematic representation is seen shown in 19 in the whole liquid.

Cooling liquid is a fluorocarbons, for strengthening the insulating property of fluorocarbons, can add a small amount of sulphur hexafluoride.

The stator and rotor winding adopts liquid road parallel connection, circuit serial fashion.Its similar double-water internal cooling structure belongs to known technology, no longer narration.

It is nylon friction ring (103) that tensile spring, port are arranged in the bellows, each Duan Jun have inside and outside two-layer, be communicated with defeated, liquid return pipe respectively, to finish the sealing of freezing mixture.On the bearing bracket stand (92) of electric machine main shaft tail end distributor (27) is installed, distributor is used for freezing mixture is dispensed to the staor winding from axle.Distributor is the garden box of a bilayer, and internal layer is back liquid chamber (37), and skin is liquid outtake chamber (38).Returning liquid chamber communicates with an interior fluid passage that returns; Liquid outtake chamber then is communicated with by the liquid outlet opening of one section bellows (39) with the axle center, and isolates with time liquid chamber, as shown in figure 20.In order to prevent that freezing mixture from sewing, in bearing (40) back a seal arrangement (41) is installed, seal arrangement is made up of nylon ring and several " O " RunddichtringOs.The total prejudice of present embodiment is shown in Figure 21.

Present embodiment is mainly used in large-scale, as the generator more than the 3000KW to 6000KW, and is mainly used in particular surroundingss such as desert.

Other parts of present embodiment are just the same with embodiment 1.

Each part parts title among the present invention:

Primary blades (1), back blades (2), reinforcing ring (3), generator (4), iron tower (5), with Machine lightning rod (6), radome fairing (7), leaf dish (8), ploughshare head wedge (9), blade box beam (10), Ribs of a leaf (11), plastic foam (12), epoxy one side fibers encapsulation layer (13), aluminum alloy outer cover (14), End cap reinforcement (15), cooling pendular ring (16), generator shaft (17), air cleaner (18), Aerial cooler (19), fan (20), air-conditioning condenser (21), scavenger fan (22), air-conditioning Press accent machine (23), heating power expansion valve (24), ripple sealed tube inner tube (25) is outside the ripple sealed tube Pipe (26), coolant distributor (27), coolant pump (28), total liquid-feeding pump (29), stator liquor charging Pump (30), filter (31), clutch (32), fluid house steward (33) returns liquid house steward (34), Axle returns fluid passage (35), and transfusion road (36) returns liquid chamber (37), liquid outtake chamber (38), fluid bellows (39), main shaft bearing (40), shaft sealer (41), liquid storage bottle (42), mistake in the middle of the first order Axle gear (43), central shaft gear (44), carrier gear (45) in the middle of the second level, permanent magnet excitation Machine (46), AC exciter (47), chassis (48), and base (49), steer motor (50), Worm gear (51), worm screw (52), T-shape rotating shaft (53), thrust bearing (54), cod (55), Collector ring (56), lightning protection ring (57), lightning-arrest brush (58), ball goes back to the hole of bead (59), ball (60), Upper protective cover box (61), low protection cover box (62), hydraulic pump (63), oil pipe (64), magnetic valve (65), braking grinding disk (66), brake-shoe (67), actuator (68), lock (69), Survey air hardening steel pipe (70), weathercock (71), locator (72), little windmill (73), tachometer generator (74), Hall element (75), photoemission cell (76), photoelectric receiving tube (77), photoelectricity adapter (78), Little control room (79), driving amplifier (80), preamplifier (81), moving tube (82), fan Axle (83), air cleaner (84), brush (85), ball cover (86), O-ring seal (87), Safety barrel (88), lock actuator (89), small magnetic needle (90), photoelectricity adapter ring (91), bearing Frame (92), dead bolt (93), fan shaft (94), axle head endoporus (95), the outer annular distance (96) of axle head, First double-ply bellows (97), second bellows (98), the 3rd bellows (99), dust cover (100), Adapter collector ring (101), brush (102), nylon ring (103), spline (104), shift fork (105), Shell (106), end cap (107), base plate reinforcing rods (108), bolt (109), nylon joint (110), Carrier gear bearing (111), photoelectricity ring (112), stator (113), middle carrier gear bearing (114), The friction type clutch (115), electric wire (116), bearing (117).

Claims (8)

1, a kind of wind powered generator system of multiblade wind wheel machine driving, it mainly is made up of wind turbine, generator, automatic control section, cooling unit, wind finding device, commutator, computer communication device, worm speed reducer, it is characterized in that:

Wind turbine is made up of multi blade fan, a plurality of cover plate and rotating shaft, and wind turbine drives the rotor rotation of generator, the multi blade fan that the blade of wind turbine fan is made up of major and minor blade after by clutch and speed increaser; Or only by primary blades (1) and 1-6 the fan that the leaf dish is formed; Blade tip portion all has 1-4 road reinforcing ring (3) on the fan; Blade divides primary blades (1) and back blades (2) to plant.The installation of leaf dish (8) on fan shaft some angles that turn forward in the axial direction; Begin to turn forward from first order leaf dish, the leaf dish angle that turns forward successively in back all increases several angle than previous leaf dish; In air-cooled generator, adopt fiberglass blade; In the inner-cooled generator, then adopt the hollow metal blade; Fiberglass blade is by the Ultrafort Steel skeleton, and after foamed plastics (12) filling, epoxy one carbon fiber glass steel band parcel is made behind the outsourcing layer of aluminum alloy skin (14); Blade root is equipped with the ploughshare head wedge of band ripple ditch shape and is embedded on the leaf dish (8); 2-4 road reinforcing ring (3) is installed in the blade outer end, and primary and secondary blade pass is crossed reinforcing ring and is linked together, and in metal hollow blade outer end 2-3 road reinforcing ring (3) is installed, and cooling pendular ring (16) in 1-2 road is installed below reinforcing ring (3); Major and minor blade is being staggered installation on the fan: wherein primary blades (1) is installed in respectively on 1-6 the leaf dish (8), and each leaf dish can be installed fiberglass blade 7-30 sheet, or hollow radiator shutter 5-10 sheet is installed; Fiberglass blade has only 1-4 road reinforcing ring (3) and does not have cooling pendular ring (16); The adjacent both sides of every transfusion blade promptly are back the liquid blade in the hollow blade, under hollow blade wedge head, indusion tube is installed, all coolant pipes are all in parallel, be indusion tube and indusion tube also, liquid return pipe and liquid return pipe are also, send into the feed flow road after passing through filter (31) and pump (29) then, above-mentioned each leaf dish is that logical spline is fixed on the wind turbine main, and freezing mixture adopts fluorocarbons and sulphur hexafluoride to form; Total defeated, time fluid passage (35) is arranged in the fan shaft (94).

2. the wind powered generator system that a kind of multiblade wind wheel machine according to claim 1 drives, it is characterized in that wherein said wind turbine through being to give rotor through level Four planet gear speed increaser driving force behind the spline cartridge type clutch (32), also can be to give rotor through three grades of non-axis speed increaser driving forces behind the friction clutch (115); Spline cartridge type clutch (32) drives the cartridge type clutch by hydraulic actuator (68) shift fork and carries out clutch; In the level Four speed increaser, clutch (32) output shaft gear drives first order planetary gear set (43), through central shaft gear train (44), through second planetary gear set (45) rear driving generator main shaftgear, finishes speedup again; In three grades of speed increasers, then finish speedup by first, second grade carrier gear group (43), (45); Speed increaser uses grease lubrication; In adopting during cold mode, fan output shaft (94), central shaft bridge gear shaft (44), generator rotor shaft (17) all have in the axle and defeated back flow channel (35) and endoporus (95) and Wai Yuan hole (96) are arranged at end face, and on endoporus, outer hole, a double-ply bellows (25) is installed respectively, (26) form 1,2,3 grade of motive sealing.Tensile spring is arranged in the bellows, and the mouth of pipe is equipped with the nylon ring (103) of rub resistance.

3. the wind powered generator system that a kind of multiblade wind wheel machine according to claim 1 drives, it is characterized in that wherein said generator cooling unit has the air-cooled dual mode of cold-peace air-conditioning heat dissipation in the fan radiating type: in air-cooled, generator stator-rotator is equipped with axially and ventilation groove radially, and be equipped with in two ends of rotor, go out fan (20), air is in generator and fixed, circulation cooling in the rotor, at the generator afterbody cooling conditioner is housed, the cold doubtful device of air-conditioning discharges hot air by the tail end ventilating fan: A/C evaporator then is installed in the motor, as the cooler (19) of inner circulating air; In the interior wing radiating type in the cold mode, freezing mixture is fluorocarbons and sulphur hexafluoride, freezing mixture is after fan cooled, drying filter (18), total liquid delivering pump (29), the center through the 1st, 2,3, in the section double-ply bellows enters generator shaft axle track (35), some is sent to the rotor winding through rotor liquor charging house steward, another major part enters the bellows dispenser (27) of a tail, enter liquid outtake chamber (38), enter stator liquid delivering pump (37); Return liquid chamber through distributor and enter in the axle fluid passage (35) back and return liquid with rotor and converge to get back to and cool off air pump (28) and enter again to enter after the hollow blade radiator dispels the heat next time and circulate through the liquid that returns behind the staor winding by the 3rd, 2,1 bellows and skin; Distributor is to be made of a double-deck garden shape box, is installed on the bearing bracket stand (29) of a tail, and interior is to be back liquid chamber (37) outside the liquid outtake chamber (38); Return liquid chamber and link to each other with axle outloop fluid passage, liquid outtake chamber then links to each other with the feed flow hole of axle center hole by one section bellows (39); Liquid outtake chamber pumps into staor winding with freezing mixture after by one section metal tube and stator solution feed pump (30), the staor winding the other end enters the outloop fluid passage of axle after then the freezing mixture of vaporization being sent into back liquid chamber after returning liquid house steward collection, and returns liquid with rotor and converge in axle; Be provided with seal arrangement (93) in main shaft tail bearing (40) back, seal arrangement is that nylon ring and " O " type cushion rubber are formed.

4. the wind powered generator system that a kind of multiblade wind wheel machine according to claim 1 drives is characterized in that wherein said wind finding device is: wind direction, wind speed detector are installed in to be surveyed on the air hardening steel pipe (70); Wherein, the wind direction detector is that utilization point current potential is measured the angle between wind-driven generator and the fan after driving a contactless locator (72) rotation with weathercock (71); The wind speed detector is installed in to be surveyed on the air hardening steel pipe, drives a tachometer generator (74) rotation by a little windmill (73), and the height of tachometer generator output voltage is represented windmill rotating speed height, and speed measuring motor can be digital, or analog; The wind direction detector is made up of many Hall elements (75) and an outer needle forever.In the interior lower end of a cylinder, along circumference 30-60 Hall element (75), weathercock axle are installed and drive the Hall element induction current that needle points to, measure the angle of weathercock according to this; Wind finding device is installed on the generator for one pair, and another pair is installed on the iron tower.

5. a kind of multiblade wind wheel machine according to claim 1 drives wind powered generator system, it is characterized in that wherein said commutator is by chassis (48), the base that base (49) the consists of generator mutually commutator of holding concurrently; Below the chassis, be equipped with section for the hollow steel pipe (53) of " T " font as rotating shaft, cod (55) 2 dishes are installed in the rotating shaft (53), thrust bearing (54) 1 dishes, this three dishes bearing all links to each other with base (49).The edge on chassis is provided with four road collector rings (56), is fixed on the base with the collector ring corresponding part four brushes (85) brush holder being installed; Below collector ring, lightning-arrest metal ring (57) is installed, it links to each other with lightning-arrest brush (58), and lightning-arrest brush is positioned on the opposite of output brush (85), and lightning-arrest brush admittance line or iron tower connect the earth, and output brush is surveyed electricity and is entered little control room by power cable; The outside on base and chassis also is equipped with sealing cover, in case dust enters; In generator top central authorities, lightning conductor (90) at random is installed, the lightning conductor bottom is the hollow steel pipe, copper conductor passes steel pipe, is connected on the lightning-arrest ring below the chassis; 2 steer motor (50) are installed on the chassis, and motor is symmetric arrays, and motor drives generator by worm reducer and turns to.

6. the wind powered generator system that a kind of multiblade wind wheel machine according to claim 1 drives, it is characterized in that being separately installed with in the wherein said automatic control partly A, B, three one-chip computers of C and finish the setting of detection, index and the operating function of generator parameters, relay protection, each other and and the power station master control room between communication, form a miniature Local Area Network with this; Whole operating functions of A computer realization and parameter are set, and its thief hatch is accepted the output voltage of generator, electric current, and frequency, phase sequence, winding temperature rise, wind direction, transducing signals such as wind speed are exported control signal corresponding, and finish the communication of B, C computer; The B computer is installed on the inner rotor shaft, finish a detection such as rotor shaft field current, voltage, short circuit ground connection, winding temperature rise, rotating rectifier temperature rise, and control excitation intensity according to this, and will be out of order information by opto-electrical transmitting device deliver to A, the C computer goes, in time in the C computer, show, report to the police and carry out relay protection; On excitation, the B computer comes output signal according to the air quantity data of A computer output, comes the angle of flow of quick control one-way SCR to come the quick control excitation, realizes the stable and constant frequency of generator speed with the height of control output voltage.The C computer is contained in the control cabinet of control room under the tower (79); the instrument of finishing generator and relevant Control Parameter thereof shows; and and A computer and Control of Power Plant chamber between data communication; the various relay protection signals since A computer and the power station Master Control Room have been accepted; finish the overcurrent, overvoltage of stator and rotor, under-voltage, winding temperature rise, frequency, phase place step-out, protection, and the generator hydraulic braking, function such as lock, unblank.

7. the steering gear of the wind powered generator system that a kind of multiblade wind wheel machine according to claim 6 drives, it is characterized in that wherein said worm speed reducer is a kind of worm gear reducer of rolling type: on a hollow screw rod (52), be processed with the spiral ball grooves, ball (60) is installed on the groove, and there is go back to the hole of bead (59) at the spiral chute two ends to constitute ball-recirculation; Screw rod is a kind of ball-screw (52); Worm gear (51) only contacts with ball, finishes the rolling power transmission, a ball cover (86) is arranged on the screw rod and links with motor housing; On retarder and below dustproof protecting cover (61) (62) is all arranged; following safety cover center hole is with the safety barrel (88) of fixed light electric commutator; moving tube then is fixed in the port of rotating shaft (53); upper and lower safety cover connects together with bolt; and be fixed on steer motor shell and the ball safety cover (86); the steer motor base then is fixed on the inside on iron tower top, and whole retarder seals fully, and uses grease lubrication.

8. the wind powered generator system that a kind of multiblade wind wheel machine according to claim 1 drives, the control communications portal that it is characterized in that wherein said A, B, three electronic computers of C is partly all to adopt digital light two electrical transmission modes in rotation and displacement, and mode is A computer and B computer; Carry out between A computer and the C computer; Concrete mode be all adopt infrared light laser diode and photodiode to finish emission between A computer and each computer, the every cover photo-electric device of reception photoelectric figure signal is propped up emission tube and is formed delegation's garden battle array with the receiving tube of quantity by 10-20, receiving tube and emission tube are staggered on a garden ring, and the garden ring is installed on the edge.Another photoelectricity ring (91) then is installed, all equal parallel operations of diode that transmit and receive on the shell inboard of correspondence; A photoelectricity adapter (78) is installed below worm speed reducer, be used for finishing the communication of A computer and C computer, the photoelectricity adapter is moving tube and safety barrel, and the brush of oil hydraulic pump power supply and collector ring composition, the moving tube (82) of photoelectricity adapter links to each other with the axis hole of chassis commutator, moving tube (82) and safety barrel are equipped with 2 driving amplifiers (80), preamplifier (81) and each two pairs of infrared emission, reception diode, signal is sent into preceding emission tube behind driving amplifier (80), the receiving tube on opposite receives after optical signal converts thereof into electrical signal and sends into preamplifier (81) that vice versa; In the junction of moving tube (82) with safety barrel (88), bearing is installed, on the insulating material outside the moving tube of corresponding bearing, be inlaid with two road collector rings (701), two brushes (102) are installed on the following safety barrel corresponding with collector ring, for accessorys such as oil hydraulic pump and steer motor and electronic computer provide standby power supply, dust-proof cover (100) is installed in the brush periphery.

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