CN102748227B - Wind driven generator and power generation method thereof - Google Patents
Wind driven generator and power generation method thereof Download PDFInfo
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- CN102748227B CN102748227B CN201210226632.0A CN201210226632A CN102748227B CN 102748227 B CN102748227 B CN 102748227B CN 201210226632 A CN201210226632 A CN 201210226632A CN 102748227 B CN102748227 B CN 102748227B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention relates to the field of power generation, in particular to a wind driven generator and a power generation method thereof. The stressed area of fan blades can be increased, the rotor power coefficient can be improved, the occurrence of opposing torque is avoided, and the loss of effective torque is reduced. The wind driven generator comprises a wind wheel, a power generator and a wind guiding device, wherein the wind wheel comprises a rotating shaft and a plurality of fan blades uniformly distributed around the rotating shaft; the power generator is connected with the rotating shaft; the wind guiding device comprises a pair of side wind guiding plates arranged around the wind wheel; an air inlet and an air outlet are formed between the pair of side wind guiding plates, and are respectively arranged on two opposite sides of the wind wheel; and wind is flowed into the wind wheel from the air inlet, is blown to the wind blades on the same side of the rotating shaft, and is discharged through the air outlet.
Description
Technical field
The present invention relates to power field, be specifically related to a kind of wind-driven generator and electricity-generating method thereof.
Background technique
Wind energy, as a kind of clean renewable energy sources, is more and more subject to people's attention.In the application of wind energy, power field has broad application prospects.
In existing wind-power electricity generation, vertical shaft wind driven generator is more often used to generate electricity.Existing vertical shaft wind driven generator transmits wind energy by the rotation of wind wheel, and wind wheel comprises the multiple fan blades around rotating shaft distribution.By Wind power propelling wind wheel around this axis of rotation wind energy is passed to generator to generate electricity by this rotating shaft.
But in existing vertical shaft wind driven generator, when wind is to the fan blade of rotating shaft both sides, can make the fan blade of rotating shaft both sides simultaneously countershaft produce forward moment and opposing torque.Although the fan blade producing forward moment is made concavity by prior art, the fan blade producing opposing torque makes convex, to increase forward moment, still can produce a certain amount of opposing torque, thus lose more effective torque.Particularly when Environmental Conditions is gentle breeze environment, because opposing torque is comparatively large, rotating shaft can be made normal rotation to generate electricity with drive electrical generators.
Summary of the invention
The invention provides a kind of wind-driven generator and electricity-generating method thereof, the loss of effective torque can be reduced.
The invention provides a kind of wind-driven generator, comprising:
Wind wheel, it comprises rotating shaft and around the equally distributed multiple fan blade of this rotating shaft;
Generator, it is connected with described rotating shaft;
Wind guiding device, it comprises a pair side leading wind guide plate arranged around described wind wheel, forms intake grill and exhaust outlet between this pair side leading wind guide plate, described intake grill and exhaust outlet be separately positioned on described wind wheel contrary to both sides;
Wherein, wind flows into described wind wheel from described intake grill, and blows to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet.
Present invention also offers a kind of electricity-generating method of wind-driven generator as the aforementioned, it is characterized in that, comprising:
Wind flows into described wind wheel from described intake grill;
Wind is directed to the described fan blade of the same side of described rotating shaft, and the described fan blade of the same side of described rotating shaft produces forward moment to drive described axis of rotation simultaneously;
Described forward moment is passed to described generator by described rotating shaft;
Described generator rotates under the driving of described forward moment, and generates electricity.
By wind-driven generator provided by the invention and electricity-generating method thereof, following beneficial effect can be brought:
In the present invention, when wind flows into wind wheel from intake grill, wind guide plate guides wind to the fan blade of the same side of rotating shaft, makes the fan blade of the same side of rotating shaft produce forward moment simultaneously; Meanwhile, wind guide plate effectively stops wind to the fan blade of the meeting generation opposing torque of the opposite side of rotating shaft, thus effectively reduces the generation of opposing torque, to reduce the loss of effective torque.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in below describing is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite not paying creative work, other embodiment and accompanying drawing thereof can also be obtained according to these accompanying drawing illustrated embodiments.
Fig. 1 be a kind of embodiment of wind-driven generator of the present invention from the structural representation viewed from front.
Fig. 2 be a kind of embodiment of wind-driven generator of the present invention from the structural representation viewed from depression angle.
Embodiment
Carry out clear, complete description below with reference to accompanying drawing to the technological scheme of various embodiments of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, belong to the scope that the present invention protects.
The invention provides a kind of wind-driven generator, it is characterized in that, comprising:
Wind wheel, it comprises rotating shaft and around the equally distributed multiple fan blade of this rotating shaft;
Generator, it is connected with described rotating shaft;
Wind guiding device, it comprises a pair side leading wind guide plate arranged around described wind wheel, forms intake grill and exhaust outlet between this pair side leading wind guide plate, described intake grill and exhaust outlet be separately positioned on described wind wheel contrary to both sides;
Wherein, wind flows into described wind wheel from described intake grill, and blows to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet.
In one embodiment of the invention, see figures.1.and.2, wind-driven generator of the present invention comprises wind wheel 5, multiple fan blades that wind wheel 5 comprises rotating shaft 3 and arranges around rotating shaft 3, and multiple fan blade is uniformly distributed around rotating shaft.Preferably, fan blade is the fan blade being similar to sail formula, is the fan blade of arc, and relatively, one side is convex, and one side is concavity.Preferably, wind blows to the concavity face of fan blade from air inlet, makes fan blade produce larger moment.
In one embodiment of the invention, generator 4 is connected with rotating shaft 3, and preferably, generator 4 is connected to one end of rotating shaft 3, and wind energy directly can be passed to generator and generate electricity by rotating shaft.
In one embodiment of the invention, the periphery of wind wheel 5 is provided with wind guiding device 7, wind guiding device comprises a pair side leading wind guide plate arranged around wind wheel, this a pair side leading wind guide plate constitutes intake grill 703 and exhaust outlet 704, intake grill and exhaust outlet are all between this pair side leading wind guide plate, and intake grill and exhaust outlet be distributed in wind wheel respectively contrary to both sides, to make wind enter after-blow to more fan blade from intake grill, produce more moment.
In one embodiment of the invention, wind is changed direction by wind guiding device after intake grill flows into wind wheel, blows to the fan blade of the same side of rotating shaft, flows out by exhaust outlet.Because fan blade meeting under the blowing of wind-force of the same side of rotating shaft produces forward moment simultaneously, and the fan blade of opposite side can produce the opposing torque relative to this forward moment, so wind is only directed to the fan blade of rotating shaft the same side by wind guiding device, effectively can avoid the generation of opposing torque, reduce the loss of effective torque.Preferably, the fan blade of the same side of rotating shaft refers to through rotating shaft, fan blade is divided into two-part in the direction along wind direction, and wind only blows to wherein a part of fan blade.
In one embodiment of the invention, after wind flows into wind wheel from intake grill, blow to the same side of half or fan blade more than half, this same side refers to the side of multiple fan blade towards intake grill.Wind also may blow to the side of the intake grill dorsad of fan blade, produce opposing torque, but this opposing torque is very little, negligible.Fan blade is parallel with wind direction at the tangent line of the end in outside, or fan blade acutangulates at the tangent line of the end in outside and wind direction, makes wind can only blow to the side of fan blade.
In the various embodiments of the invention, preferably, described fan blade comprises aluminum-magnesium alloy plate.The fan blade of aluminum-magnesium alloy plate not easily gets rusty, lightweight, and intensity is high, can reduce the quality of wind wheel, enables wind wheel more quick rotation, and particularly when wind speed is lower, wind wheel is also rotatable.And aluminum-magnesium alloy plate price is relatively cheap, can be cost-saving.
In the various embodiments of the invention, preferably, multiple described fan blade has identical size and shape.All fan blade sizes, shape are identical, and whole wind wheel can be enable stably to rotate.
In the various embodiments of the invention, preferably, described wind-driven generator comprises further: supporting structure, its be arranged on described wind wheel periphery and between described wind wheel and described wind guiding device.
In embodiment as depicted in figs. 1 and 2, arranging supporting structure 6 can support wind wheel 5, wind wheel 5 can stably be rotated, particularly when wind speed is larger.Preferably, supporting structure 6 can be set to the cylindrical frame concentric with the virtual circumference of the outermost of wind wheel, as shown in the supporting structure 6 of Fig. 2.Preferably, between supporting structure 6 and wind guiding device 7 in a distance, be such as 20cm, to make wind guiding device can not encounter supporting structure in rotation process, more stably rotate.
In the various embodiments of the invention, preferably, described a pair side leading wind guide plate is a pair curved panel, and this pair curved panel seamlessly transits from described intake grill to described exhaust outlet;
Preferably, described a pair curved panel comprises the first curved panel and the second curved panel, described rotating shaft is parallel with wind direction at the tangent line of one end of described air inlet with described first curved panel, and described second curved panel is vertical with wind direction at the tangent line of one end of described air inlet;
More preferably, described first curved panel is in the distance of the virtual circumference of the outermost of one end of described air inlet and described wind wheel, be greater than the distance of this first curved panel in the virtual circumference of the one end at described exhaust outlet place and the outermost of described wind wheel, described second curved panel is along concentric with the virtual circumference of the outermost of described wind wheel perpendicular to the camber line on the direction of described rotating shaft.
In an embodiment as illustrated in figure 2, a pair side leading wind guide plate is curved panel, comprise the first curved panel 701 and the second curved panel 702, first curved panel 701 and the second curved panel 702 are all set to the panel (seeing along the direction perpendicular to rotating shaft) of arc, can be convenient to go for a drive, more wind is directed to wind wheel, and a pair curved panel seamlessly transits from intake grill 703 to exhaust outlet 704, can be convenient to wind and flow to exhaust outlet from intake grill.Preferably, first curved panel 701 and the second curved panel 702 all have the shape from intake grill to wind wheel flaring, and from exhaust outlet to the shape of wind wheel flaring, be similar to the shape that narrow centre, two ends is wide, be more convenient for like this going for a drive, more wind is directed to wind wheel, wind wheel is rotated and produces more forward moment.
In one embodiment of the invention, with reference to Fig. 2, the first curved panel 701 is parallel with wind direction 10 at the tangent line of one end 701a at intake grill 703 place, and this is a kind of threshold state, and this state can make enough wind be directed to wind wheel place.One end 701a of the first curved panel 701 also can continue translation, to make intake grill larger to the direction (left side in figure) away from wind wheel.
In one embodiment of the invention, with reference to Fig. 2, the second curved panel 702 is vertical with wind direction 10 at the tangent line of one end 701a at intake grill 703 place, effectively can block wind to the fan blade that can produce opposing torque, reduces the loss of effective torque.
In one embodiment of the invention, with reference to Fig. 2, first curved panel 701 is in the distance of the virtual circumference (virtual circumference of the outermost of wind wheel refers to the movement locus of one end away from rotating shaft of fan blade) of one end 701a at intake grill 703 place and the outermost of wind wheel 5, be greater than the distance of the first curved panel 701 in the virtual circumference of one end 701b at exhaust outlet 704 place and the outermost of wind wheel 5, can intake grill be increased like this, make more wind be directed to wind wheel place.
In one embodiment of the invention, with reference to Fig. 2, the camber line that the second curved panel 702 is looking up along the side perpendicular to rotating shaft 3 is concentric with the virtual circumference of the outermost of wind wheel, to block wind better to the fan blade producing opposing torque.
In the various embodiments of the invention, preferably, described wind guiding device has the rotation axis overlapped with described rotating shaft, and described rotating shaft is vertical pivot, and described wind-driven generator comprises further:
Wind direction detector, it is for detecting the change of wind direction and starting the rotation of described wind guiding device;
Dynamic structure, it is connected with described wind guiding device;
Controller, it is connected with described wind direction detector and described dynamic structure respectively, and control described dynamic structure according to the change of described wind direction and drive described wind guiding device to rotate, wind is made to flow into described wind wheel from described intake grill, and blow to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet.
In one embodiment of the invention, wind guiding device can be followed wind direction and be rotated, to adapt to the change of wind direction, thus different wind direction nextpage can effectively guide distinguished and admirable enter wind wheel, blow to the fan blade of the same side of rotating shaft, produce more forward moment, reduce the generation of opposing torque.Preferably, the angle that turns over of wind guiding device is identical with the angle of change of the wind.
In one embodiment of the invention, the rotation axis of wind guiding device overlaps with rotating shaft, and wind guiding device and wind wheel have identical rotatingshaft, with the rotation making wind guiding device can not have influence on wind wheel when rotating.
In one embodiment of the invention, rotating shaft is vertical pivot, and generator is connected to the bottom of this rotating shaft.Wind-driven generator of the present invention comprises the wind direction detector for detecting wind direction, and wind guiding device rotates according to the change of the wind direction that wind direction detector detects.Preferably, wind direction detector is wind vane or electronics weathercock.
In one embodiment of the invention, wind-driven generator comprises dynamic structure, and dynamic structure is for the rotation of wind guiding device provides the device of power, such as, be motor.Wind direction detector drives wind guiding device to rotate according to the change of wind direction to start dynamic structure.
In one embodiment of the invention, wind-driven generator comprises controller further, this controller is connected with wind direction detector and dynamic structure respectively, when wind direction detector detects that wind direction changes, wind direction detector mechanically or electronics mode start-up connector, thus this controller control dynamic structure drives wind guiding device to rotate, to adapt to the change of wind direction.
In the various embodiments of the invention, preferably, described wind-driven generator comprises drive mechanism further;
Described wind direction detector is wind vane;
Described dynamic structure comprises motor, and this motor is connected to be driven described wind guiding device to rotate by described drive mechanism with described drive mechanism;
Described controller comprise be connected with described motor respectively often open Node Switch and a normally closed Node Switch for a pair, described Node Switch of often opening for a pair is fixedly connected with described wind guiding device, describedly often open the both sides that Node Switch is separately positioned on described wind vane for a pair, described normally closed Node Switch is arranged on described a pair and often opens between Node Switch;
Wherein, when described wind vane touch when moving often to open Node Switch described in one of them time, start described motor and drive described wind guiding device to rotate clockwise by described drive mechanism; When described wind vane touch when moving often to open Node Switch described in another time, start described motor and drive described wind guiding device to rotate counterclockwise by described drive mechanism; When described wind vane touches described normally closed Node Switch at the volley, described motor stall.
In one embodiment of the invention, see Fig. 1 and Fig. 2, wind direction detector is wind vane 1, and dynamic structure is motor 8, and motor 8 drives wind guiding device 7 to rotate by drive mechanism 9.Controller is multiple contact switch, to control wind guiding device to carry out not in the same way (clockwise or counterclockwise) rotation according to the change of wind direction.Multiple contact switch rotates together with wind guiding device, and is fixedly connected with wind guiding device.The line that multiple contact switch comprises between normally-closed contact switch 203(a pair normally opened contact switch of being separately positioned between the first normally opened contact switch 201, second normally opened contact switch 202 of wind vane both sides and this pair normally opened contact switch can lay respectively on different straight lines from normally-closed contact switch).Preferably, the first normally opened contact switch 201 and the second normally opened contact switch 202 are separately positioned on the both sides of the head of wind vane, to make wind vane when rotating according to change of the wind, touch this two normally opened contact switches.These two normally opened contact switches are connected with motor respectively, when the head of wind vane 1 touches one of them normally opened contact switch, actuating motor also controls motor and rotates forward, thus drives wind guiding device to carry out a kind of rotation (such as clockwise direction) of direction by drive mechanism; When the head of wind vane 1 touches another normally opened contact switch, actuating motor also controls motor and reverses, thus drives wind guiding device to carry out rightabout rotation (such as counterclockwise) by drive mechanism.When wind vane touches the 3rd normally-closed contact switch 203, motor stops starting.Arranging the 3rd normally-closed contact switch can the use of available protecting motor, avoid motor unlatching, close between change too frequent, damage motor.
In one embodiment of the invention, preferably, wind guiding device, except comprising a pair curved panel, also comprises the top board for connecting this pair curved panel and base plate.Preferably, first, second normally opened contact switch and the 3rd normally-closed contact switch are fixed on top board.
In the various embodiments of the invention, preferably, described wind vane is arranged on above described rotating shaft, and the spin axis of described wind vane overlaps with described rotating shaft;
Described in one of them, side leading wind guide plate is positioned on the elongation line of the axis residing for described wind vane in one end of described intake grill.
In one embodiment of the present of invention as shown in Figure 1, wind vane 1 is arranged on the top of rotating shaft 3, and such as, directly over being, and the rotation axis of wind vane 1 overlaps with rotating shaft 3, the more compact structure of wind wheel can be made like this, and more easily drive wind wheel to rotate according to the change of wind direction.
In one embodiment of the present of invention as shown in Figure 2, second curved panel 702 is positioned on the elongation line of the axis residing for wind vane 1 at one end 702a at intake grill 703 place, be easier to the position that the second curved panel is set by the wind direction shown in wind vane like this, make wind not blow to the fan blade that can produce opposing torque as far as possible.
In one embodiment of the invention, described drive mechanism comprises worm gear and worm screw, and wherein, described worm gear has rotatingshaft; Described worm screw is connected with described motor and is driven by described motor rotates, described worm gear is connected with described worm screw and is driven by described worm screw and rotates around described rotatingshaft, and described rotatingshaft is arranged on the top of described rotating shaft and is connected with described wind guiding device to drive described wind guiding device to rotate.Worm gear and worm screw are common mechanical transmission structures, are convenient to motor and drive wind guiding device to carry out the rotation of different direction.
In the various embodiments of the invention, preferably, described wind direction detector is electronics weathercock, and this electronics weathercock sends wind vector signal to described controller;
Described controller receives described wind vector signal and dynamic structure drives described wind guiding device to rotate according to this wind vector SC sigmal control, wind is made to flow into described wind wheel from described intake grill, and blow to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet.
In one embodiment of the invention, the mode of electronics or communication can also be taked to rotate to control wind guiding device.Electronics weathercock is used to detect wind direction, the data of change of the wind more accurately can be obtained, these data are sent to controller as signal by electronics weathercock, controlling dynamic structure according to the change of the wind direction of this Signal aspects after controller receives this signal drives wind guiding device to rotate more accurately, preferably, the angle of change of the wind is identical with the angle that wind guiding device rotates, and to enable wind guiding device mate from the wind of different wind direction all the time, makes wind only blow to the fan blade of the same side of rotating shaft.
Present invention also offers a kind of electricity-generating method of wind-driven generator as the aforementioned, comprising:
Wind flows into described wind wheel from described intake grill;
Wind is directed to the described fan blade of the same side of described rotating shaft, and the described fan blade of the same side of described rotating shaft produces forward moment to drive described axis of rotation simultaneously;
Described forward moment is passed to described generator by described rotating shaft;
Described generator rotates under the driving of described forward moment, and generates electricity.
In the various embodiments of the invention, preferably, the electricity-generating method of described wind-driven generator comprises further:
Described wind guiding device rotates according to the change of wind direction, with the described fan blade making wind be directed to the same side of described rotating shaft.
In one embodiment of the invention, wind guiding device is not fixed, is to carry out rotating according to the change of wind direction, with the fan blade making the wind energy of different wind direction blow to the same side of rotating shaft all the time, thus effectively avoids the generation of opposing torque.
In the various embodiments of the invention, preferably, the electricity-generating method of described wind-driven generator comprises further:
Wind-force excessive or too small time, lock described dynamic structure, make described dynamic structure stop start.
In one embodiment of the invention; when wind-force is excessive; wind wheel is moved in wind; be enough to wind wheel is rotated with the speed of higher speed; and wind guiding device also may be moved to rotate by wind, thus do not need to restart dynamic structure (such as motor) and control wind guiding device and rotate, can dynamic structure be protected like this; avoid starting or stoping too frequent, damage dynamic structure.Wind speed measurement device can be arranged detect the size of wind speed thus judge the size of wind-force, when wind speed exceedes certain value, can think that wind-force is excessive, need not dynamic structure be started.
Generator in one embodiment of the invention, when wind-force is excessive, speed limit can be carried out to generator, so that can be stablized, effectively generate electricity.
In one embodiment of the invention, when wind-force is too small, start dynamic structure when being more than or equal to the electricity rotating wind guiding device and expend the electricity that wind-driven generator sends; lockable dynamic structure; stop starting dynamic structure, with save power, and protect the working condition of dynamic structure.Wind speed measurement device can be arranged detect the size of wind speed thus judge the size of wind-force, when wind speed is lower than certain value, can thinks that wind-force is too small, need not dynamic structure be started.
In the various embodiments of the invention, preferably, the electricity-generating method of described wind-driven generator comprises further:
When the change frequency of wind direction is higher than predetermined value, lock described dynamic structure, make described dynamic structure stop starting.
In one embodiment of the invention, when the frequency of wind direction (such as 5 seconds to 20 seconds) change of the wind is at short notice higher, owing to dynamic structure being caused to start continually after starting dynamic structure and stopping startup, certain damage is caused to dynamic structure.At this moment can lock dynamic structure, stop dynamic structure starting, protection dynamic structure works effectively.After detecting that wind direction is stable, can unlock to dynamic structure.The situation of change of the wind direction in the short time can be detected by wind direction detector.
In the various embodiments of the invention, preferably, the electricity-generating method of described wind-driven generator comprises further:
When the electrical network electricity period at a low ebb, described generator is by the mode storage of electrical energy of hot accumulation of energy, and when electrical network needs electricity, described generator passes through the mode of thermo-electric generation again to electrical network transmission of electric energy.
In the prior art, only have annual part-time to generate electricity, when trough-electricity, electrical network does not need to use more electric power, and at this moment, the electricity generated stores with regard to needs.The present invention is by the mode store power of hot accumulation of energy.Hot way of energy storage is awarded patent right, is the way of energy storage to a kind of dielectric heating.The present invention is heated a kind of medium (being such as transformer oil) by the electricity generated, and is heated to uniform temperature (being such as 300 DEG C), thus stores the electricity generated.When electrical network needs electricity consumption, then by the mode of thermo-electric generation to grid transmission.The mode of thermo-electric generation is a kind of prior art.
By wind-driven generator provided by the invention and electricity-generating method thereof, at least following a kind of beneficial effect can be brought:
1. reduce the loss of effective torque.In the present invention, when wind flows into wind wheel from intake grill, wind guide plate guides wind to the fan blade of the same side of rotating shaft, makes it produce forward moment simultaneously; Meanwhile, wind guide plate effectively stops wind can produce the fan blade of opposing torque to the opposite side of rotating shaft, thus effectively reduces the generation of opposing torque, to reduce the loss of effective torque.
2. improve the utilization factor of wind energy.Wind can be directed to the fan blade of the same side of rotating shaft by wind guiding device provided by the invention, makes half or fan blade more than half in wind to wind wheel, so just can increase the moment produced, thus improves the utilization factor of wind energy.
3. reduce costs, and expanded service life.Fan blade is made up of aluminum-magnesium alloy plate, because aluminum-magnesium alloy price is relatively cheap, can reduce costs; Aluminum-magnesium alloy not easily gets rusty, lightweight, intensity is high simultaneously, and life time is long compared with the time of other wind wheels.
4. expand Applicable scope.Because wind guiding device just can lead under gentle breeze state, can generate electricity.The generator of single-wheel can establish one's own system, and convenient and flexible installation can be combined into the power station of various power, and it can be arranged on the roof of building, and on support, every have the place of wind to install.Because its power coefficient is high, electric motor power is large, cost of electricity-generating is low, is highly suitable for island, frontier sentry, mountain area, oil pipeline heating, rural area, coastal area, villa quarter is powered or dispersing mode is powered to regional power grid.Often there is gentle breeze in the high-altitude of general area more than 10 meters, sometimes also has high wind, the wind guiding device that wind-driven generator of the present invention is rotated by the change can following wind direction, make it can either generate electricity under breeze conditions, also can generate electricity under high wind conditions, because it is lightweight, centrifugal force is little, dry sound is little, useful horsepower is large, installs simple, convenient management, cost is low, so can obtain the favor of each side.
5. can utilize gentle breeze balanced generating throughout the year, can power generating quality be ensured.Wind-driven generator provided by the invention by the leading role of wind guiding device, can make wind wheel all can rotate under most state, particularly still can rotate in gentle breeze situation, thus balanced generating throughout the year, ensure power generating quality.
Wind-driven generator of the present invention can bring great economic benefit, for 30kw type:
(1) generator cost 150,000 yuan/platform;
(2) wind wheel cost 20,000 yuan/platform;
(3) support system 10,000 yuan/platform;
(4) guidance system 20,000 yuan/platform;
(5) distribution equipment 20,000 yuan/platform, installation and transportation 1.2 ten thousand yuan/platform, loan interest 1.8 ten thousand yuan/platform;
(6) every platform overall cost 250,000 yuan/platform;
(7) annual cost is calculated by amortization mode, 250,000 yuan of ÷ 8 years=30,000 yuan/year;
(8) the annual output value is calculated by selling electric mode, 180000x0.581 unit=10.5 ten thousand yuan/year;
(9) the annual rate of gross profit formed is 10.5-3=7.5 ten thousand yuan/year;
(10) if investment 200,000,000 yuan just can complete 1200 generators, the annual gross profit formed is 1200x7.5 ten thousand yuan=0.9 hundred million yuan/year;
(11) every platform annual electricity generating capacity is 30x250x24=180000kw/;
(12) electric cost 30,000 yuan of ÷ 180,000 kilowatts=0.17 yuan/kw is often spent.
Various embodiment provided by the invention can combine as required in any way mutually, the technological scheme obtained by this combination, also within the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if belong within the scope of the claims in the present invention and equivalent technologies thereof to these amendments of the present invention and modification, then the present invention also comprises these change and modification.
Claims (7)
1. a wind-driven generator, is characterized in that, comprising:
Wind wheel, it comprises rotating shaft and around the equally distributed multiple fan blade of this rotating shaft;
Generator, it is connected with described rotating shaft;
Wind guiding device, it comprises a pair side leading wind guide plate arranged around described wind wheel, forms intake grill and exhaust outlet between this pair side leading wind guide plate, described intake grill and exhaust outlet be separately positioned on described wind wheel contrary to both sides;
Wherein, wind flows into described wind wheel from described intake grill, and blows to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet; Described wind guiding device has the rotation axis overlapped with described rotating shaft, and described rotating shaft is vertical pivot, and described wind-driven generator comprises further:
Wind direction detector, it is for detecting the change of wind direction and starting the rotation of described wind guiding device;
Dynamic structure, it is connected with described wind guiding device;
Controller, it is connected with described wind direction detector and described dynamic structure respectively, and control described dynamic structure according to the change of described wind direction and drive described wind guiding device to rotate, wind is made to flow into described wind wheel from described intake grill, and blow to the described fan blade of the same side of described rotating shaft, after flow out through described exhaust outlet;
Described wind-driven generator comprises drive mechanism further;
Described wind direction detector is wind vane;
Described dynamic structure comprises motor, and this motor is connected to be driven described wind guiding device to rotate by described drive mechanism with described drive mechanism;
Described controller comprise be connected with described motor respectively often open Node Switch and a normally closed Node Switch for a pair, described Node Switch of often opening for a pair is fixedly connected with described wind guiding device respectively with a described normally closed Node Switch, describedly often open the both sides that Node Switch is separately positioned on described wind vane for a pair, described normally closed Node Switch is arranged on described a pair and often opens between Node Switch;
Wherein, when described wind vane touch when moving often to open Node Switch described in one of them time, start described motor and drive described wind guiding device to rotate clockwise by described drive mechanism; When described wind vane touch when moving often to open Node Switch described in another time, start described motor and drive described wind guiding device to rotate counterclockwise by described drive mechanism; When described wind vane touches described normally closed Node Switch at the volley, described motor stall.
2. wind-driven generator as claimed in claim 1, it is characterized in that, described a pair side leading wind guide plate is a pair curved panel, and this pair curved panel seamlessly transits from described intake grill to described exhaust outlet;
Described a pair curved panel comprises the first curved panel and the second curved panel, described rotating shaft is parallel with wind direction at the tangent line of one end of described air inlet with described first curved panel, and described second curved panel is vertical with wind direction at the tangent line of one end of described air inlet;
Described first curved panel is in the distance of the virtual circumference of the outermost of one end of described air inlet and described wind wheel, be greater than the distance of this first curved panel in the virtual circumference of the one end at described exhaust outlet place and the outermost of described wind wheel, described second curved panel is along concentric with the virtual circumference of the outermost of described wind wheel perpendicular to the camber line on the direction of described rotating shaft.
3. wind-driven generator as claimed in claim 2, is characterized in that,
Described wind vane is arranged on above described rotating shaft, and the spin axis of described wind vane overlaps with described rotating shaft;
Described in one of them, side leading wind guide plate is positioned on the elongation line of the axis residing for described wind vane in one end of described intake grill.
4. an electricity-generating method for the wind-driven generator as described in any one of claim 1-3, is characterized in that, comprising:
Wind flows into described wind wheel from described intake grill;
Wind is directed to the described fan blade of the same side of described rotating shaft, and the described fan blade of the same side of described rotating shaft produces forward moment to drive described axis of rotation simultaneously;
Described forward moment is passed to described generator by described rotating shaft;
Described generator rotates under the driving of described forward moment, and generates electricity.
5. the electricity-generating method of wind-driven generator as claimed in claim 4, is characterized in that, comprise further:
Described wind guiding device rotates according to the change of wind direction, with the described fan blade making wind be directed to the same side of described rotating shaft.
6. the electricity-generating method of wind-driven generator as claimed in claim 5, is characterized in that, comprise further:
When the change frequency of wind direction is higher than predetermined value, lock described dynamic structure, make described dynamic structure stop starting.
7. the electricity-generating method of wind-driven generator as claimed in claim 6, is characterized in that, comprise further:
When the electrical network electricity period at a low ebb, described generator is by the mode storage of electrical energy of hot accumulation of energy, and when electrical network needs electricity, described generator passes through the mode of thermo-electric generation again to electrical network transmission of electric energy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210226632.0A CN102748227B (en) | 2012-06-29 | 2012-06-29 | Wind driven generator and power generation method thereof |
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| CN201210226632.0A CN102748227B (en) | 2012-06-29 | 2012-06-29 | Wind driven generator and power generation method thereof |
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| CN102748227B true CN102748227B (en) | 2015-05-27 |
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| CN106546372A (en) * | 2016-12-12 | 2017-03-29 | 山东赛瑞智能科技有限公司 | Real-time wind-force measuring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387265A (en) * | 2008-10-08 | 2009-03-18 | 大连理工大学 | Turbo-type vertical shaft wind mill |
| CN201310436Y (en) * | 2008-11-28 | 2009-09-16 | 广东华南工业设计院 | Wind power staggered power generation box |
| CN101555866A (en) * | 2008-04-07 | 2009-10-14 | 钟俊能 | Power generating device capable of collecting wind along wind direction |
| CN201382955Y (en) * | 2009-03-10 | 2010-01-13 | 赵君怡 | Simple device capable of displaying wind directions |
| CN202628395U (en) * | 2012-06-29 | 2012-12-26 | 偏允让 | Wind driven generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6981839B2 (en) * | 2004-03-09 | 2006-01-03 | Leon Fan | Wind powered turbine in a tunnel |
| CN201496322U (en) * | 2009-06-04 | 2010-06-02 | 诸暨市瑞贝特机电科技有限公司 | Vane of large fan |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555866A (en) * | 2008-04-07 | 2009-10-14 | 钟俊能 | Power generating device capable of collecting wind along wind direction |
| CN101387265A (en) * | 2008-10-08 | 2009-03-18 | 大连理工大学 | Turbo-type vertical shaft wind mill |
| CN201310436Y (en) * | 2008-11-28 | 2009-09-16 | 广东华南工业设计院 | Wind power staggered power generation box |
| CN201382955Y (en) * | 2009-03-10 | 2010-01-13 | 赵君怡 | Simple device capable of displaying wind directions |
| CN202628395U (en) * | 2012-06-29 | 2012-12-26 | 偏允让 | Wind driven generator |
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