CN102748227A - Wind driven generator and power generation method thereof - Google Patents
Wind driven generator and power generation method thereof Download PDFInfo
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- CN102748227A CN102748227A CN2012102266320A CN201210226632A CN102748227A CN 102748227 A CN102748227 A CN 102748227A CN 2012102266320 A CN2012102266320 A CN 2012102266320A CN 201210226632 A CN201210226632 A CN 201210226632A CN 102748227 A CN102748227 A CN 102748227A
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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 more and more receives people's attention as a kind of renewable energy sources of cleaning.In the application of wind energy, power field has broad application prospects.
In existing wind-power electricity generation, more often use the vertical pivot wind-driven generator to generate electricity.Existing vertical pivot wind-driven generator transmits wind energy through the rotation of wind wheel, and wind wheel comprises a plurality of fan blades that distribute around rotating shaft.Promoting wind wheel through wind-force rotates through this rotating shaft wind energy is passed to generator to generate electricity around this rotating shaft.
But in existing vertical pivot wind-driven generator, when wind during to the fan blade of rotating shaft both sides, the fan blade that can make rotating shaft both sides countershaft simultaneously produces forward moment and opposing torque.Although existing technology will produce the fan blade of forward moment and make concavity, the fan blade that produces opposing torque is made convex, to increase forward moment, still can produce a certain amount of opposing torque, thereby lose more effective torque.Particularly when Environmental Conditions is the gentle breeze environment because opposing torque is bigger, can make rotating shaft can't normal rotation to drive generator for electricity generation.
Summary of the invention
The invention provides a kind of wind-driven generator and electricity-generating method thereof, can reduce the loss of effective torque.
The invention provides a kind of wind-driven generator, comprising:
Wind wheel, it comprises rotating shaft and centers on the equally distributed a plurality of fan blades of this rotating shaft;
Generator, it is connected with said rotating shaft;
The wind guiding device, it comprises a pair of side leading wind guide plate that is provided with around said wind wheel, forms intake grill and exhaust outlet between this a pair of side leading wind guide plate, said intake grill and exhaust outlet are separately positioned on said wind wheel opposite to both sides;
Wherein, wind flows into said wind wheel from said intake grill, and blows to the said fan blade of the same side of said rotating shaft, flows out through said exhaust outlet afterwards.
The present invention also provides a kind of electricity-generating method of as aforesaid wind-driven generator, it is characterized in that, comprising:
Wind flows into said wind wheel from said intake grill;
Wind is directed to the said fan blade of the same side of said rotating shaft, and the said fan blade of the same side of said rotating shaft produces forward moment simultaneously and rotates to drive said rotating shaft;
Said rotating shaft passes to said generator with said forward moment;
Said generator rotates under the driving of said forward moment, and generates electricity.
Through wind-driven generator provided by the invention and electricity-generating method thereof, can bring following beneficial effect:
In the present invention, when wind when intake grill flows into wind wheel, wind guide plate guides wind blows 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; Simultaneously, the wind guide plate effectively stops wind to produce the fan blade of opposing torque to the meeting of the opposite side of rotating shaft, thereby effectively reduces the generation of opposing torque, to reduce the loss of effective torque.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; Below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art; Obviously, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is a kind of embodiment's of the wind-driven generator of the present invention structural representation of seeing from the front.
Fig. 2 is a kind of embodiment's of the wind-driven generator of the present invention structural representation of seeing from depression angle.
Embodiment
Below will combine accompanying drawing that the technological scheme of various embodiments of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiments under the prerequisite of not making creative work, the scope that all belongs to the present invention and protected.
The present invention provides a kind of wind-driven generator, it is characterized in that, comprising:
Wind wheel, it comprises rotating shaft and centers on the equally distributed a plurality of fan blades of this rotating shaft;
Generator, it is connected with said rotating shaft;
The wind guiding device, it comprises a pair of side leading wind guide plate that is provided with around said wind wheel, forms intake grill and exhaust outlet between this a pair of side leading wind guide plate, said intake grill and exhaust outlet are separately positioned on said wind wheel opposite to both sides;
Wherein, wind flows into said wind wheel from said intake grill, and blows to the said fan blade of the same side of said rotating shaft, flows out through said exhaust outlet afterwards.
In one embodiment of the invention, see figures.1.and.2, wind-driven generator of the present invention comprises wind wheel 5, and wind wheel 5 comprises rotating shaft 3 and a plurality of fan blades that are provided with around rotating shaft 3, and a plurality of fan blades evenly distribute around rotating shaft.Preferably, fan blade is the fan blade that is similar to the sail formula, is the fan blade of arc, and relatively, one side is a convex, and one side is a concavity.Preferably, wind blows to the concavity face of fan blade from intake grill, makes fan blade produce bigger moment.
In one embodiment of the invention, generator 4 is connected with rotating shaft 3, and preferably, generator 4 is connected an end of rotating shaft 3, and rotating shaft can directly pass to generator with wind energy and generate electricity.
In one embodiment of the invention; Outer periphery at wind wheel 5 is equipped with wind guiding device 7, and the wind guiding device comprises a pair of side leading wind guide plate that is provided with around wind wheel, and this a pair of side leading wind guide plate has constituted intake grill 703 and exhaust outlet 704; Intake grill and exhaust outlet are all between this a pair of side leading wind guide plate; And intake grill and exhaust outlet be distributed in respectively wind wheel on the contrary to both sides so that wind gets into after-blow to more fan blade from intake grill, produce more moment.
In one embodiment of the invention, wind is changed direction by the wind guiding device after intake grill flows into wind wheel, blow to the fan blade of the same side of rotating shaft, after exhaust outlet flows out.Because the fan blade of the same side of rotating shaft can produce forward moment simultaneously under the blowing of wind-force; And the fan blade of opposite side can produce the opposing torque with respect to this forward moment; So the wind guiding device only is directed to wind the fan blade of rotating shaft the same side; Can effectively 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 the direction along wind direction, through rotating shaft fan blade is divided into two-part, 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 a plurality of fan blades towards intake grill.Wind also may blow to a side of the intake grill dorsad of fan blade, produces opposing torque, but this opposing torque is very little, can ignore.Fan blade is parallel with wind direction at the tangent line of the end in the outside, or fan blade acutangulates at the tangent line and the wind direction of the end in the outside, makes wind can only blow to a side of fan blade.
In various embodiments of the present invention, preferably, said fan blade comprises the aluminum-magnesium alloy plate.The fan blade of aluminum-magnesium alloy plate is difficult for getting rusty, and is in light weight, and intensity is high, can reduce the quality of wind wheel, makes more quick rotation of wind wheel, and particularly under the lower situation of wind speed, wind wheel is also rotatable.And aluminum-magnesium alloy plate price is relatively cheap, can practice thrift cost.
In various embodiments of the present invention, preferably, a plurality of said fan blades have identical size and shape.All fan blade size, shape are identical, and whole wind wheel can stably be rotated.
In various embodiments of the present invention, preferably, described wind-driven generator further comprises: supporting structure, it is arranged on the peripheral of said wind wheel and between said wind wheel and said wind guiding device.
Among the embodiment as depicted in figs. 1 and 2, supporting structure 6 is set can support wind wheel 5, and wind wheel 5 can stably be rotated, particularly when wind speed is big.Preferably, supporting structure 6 can be set to the concentric cylindrical frame of virtual circumference with the outermost of wind wheel, shown in the supporting structure 6 of Fig. 2.Preferably, at a distance of certain distance, for example be 20cm between supporting structure 6 and the wind guiding device 7, so that the wind guiding device can not run into supporting structure in rotation process, more stably rotate.
In various embodiments of the present invention, preferably, said a pair of side leading wind guide plate is a pair of curved panel, and this a pair of curved panel seamlessly transits to said exhaust outlet from said intake grill;
Preferably; Said a pair of curved panel comprises first curved panel and second curved panel; Said rotating shaft is parallel with wind direction at the tangent line of an end at said intake grill place with said first curved panel, and said second curved panel is vertical with wind direction at the tangent line of an end at said intake grill place;
More preferably; Said first curved panel is in the distance of the virtual circumference of the outermost of the end at said intake grill place and said wind wheel; Greater than the distance of this first curved panel in the virtual circumference of the outermost of the end at said exhaust outlet place and said wind wheel, said second curved panel is along concentric with the virtual circumference of the outermost of said wind wheel perpendicular to the camber line on the direction of said rotating shaft.
In embodiment as shown in Figure 2; A pair of side leading wind guide plate is a curved panel, comprises that first curved panel 701 and second curved panel, 702, the first curved panels 701 and second curved panel 702 all are set to the panel of arc (along seeing perpendicular to the direction of rotating shaft); Can be convenient to go for a drive; More wind is directed to wind wheel, and a pair of curved panel seamlessly transits to exhaust outlet 704 from intake grill 703, can be convenient to wind and flow to exhaust outlet from intake grill.Preferably; First curved panel 701 and second curved panel 702 all have from the shape of intake grill to the wind wheel flaring; And, be similar to the wide shape in narrow centre, two ends from the shape of exhaust outlet to the wind wheel flaring, be more convenient for like this going for a drive; More wind is directed to wind wheel, makes the wind wheel rotation produce more forward moment.
In one embodiment of the invention, with reference to Fig. 2, first curved panel 701 is parallel with wind direction 10 at the tangent line of an end 701a at intake grill 703 places, and this is a kind of threshold state, and this state can make enough wind be directed to the wind wheel place.One end 701a of first curved panel 701 also can continue translation to the direction (left side in figure) away from wind wheel, so that intake grill is bigger.
In one embodiment of the invention, with reference to Fig. 2, second curved panel 702 is vertical with wind direction 10 at the tangent line of an end 701a at intake grill 703 places, can effectively block the fan blade of wind to meeting generation 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 of the outermost of the end 701a at intake grill 703 places and wind wheel 5 (virtual circumference of the outermost of wind wheel is meant the movement locus away from an end of rotating shaft of fan blade); Greater than the distance of first curved panel 701 in the virtual circumference of the outermost of the end 701b at exhaust outlet 704 places and wind wheel 5, can increase intake grill like this, make more wind be directed to the wind wheel place.
In one embodiment of the invention, with reference to Fig. 2, second curved panel 702 is concentric with the virtual circumference of the outermost of wind wheel at the camber line that looks up along the side perpendicular to rotating shaft 3, to block wind better to the fan blade that produces opposing torque.
In various embodiments of the present invention, preferably, said wind guiding device has the rotation axis that overlaps with said rotating shaft, and said rotating shaft is a vertical pivot, and said wind-driven generator further comprises:
The wind direction detector, it is used to detect the variation of wind direction and starts said wind guiding device rotation;
Dynamic structure, it is connected with said wind guiding device;
Controller; It is connected with said dynamic structure with said wind direction detector respectively; And control said dynamic structure according to the variation of said wind direction and drive said wind guiding device and rotate; Make wind flow into said wind wheel, and blow to the said fan blade of the same side of said rotating shaft, flow out through said exhaust outlet afterwards from said intake grill.
In one embodiment of the invention, the wind guiding device can be followed wind direction and rotated, to adapt to the change of wind direction; Thereby different wind direction nextpages effectively guides wind flow into wind wheel; Blow to the fan blade of the same side of rotating shaft, produce more forward moments, 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 the wind guiding device has identical rotatingshaft with wind wheel, so that the wind guiding device can not have influence on the rotation of wind wheel when rotating.
In one embodiment of the invention, rotating shaft is a vertical pivot, and generator is connected the bottom of this rotating shaft.Wind-driven generator of the present invention comprises the wind direction detector that is used to detect wind direction, and the wind guiding device rotates according to the variation of the detected wind direction of wind direction detector.Preferably, the 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 the device that power is provided for the rotation of wind guiding device, for example is motor.The wind direction detector rotates to start dynamic structure drive wind guiding device according to the change of wind direction.
In one embodiment of the invention; Wind-driven generator further comprises controller; This controller is connected with dynamic structure with the wind direction detector respectively, and when the wind direction detector detected wind direction and changes, the wind direction detector was through machinery type or electronics mode start-up control device; Thereby this controller control dynamic structure drives the wind guiding device and rotates, to adapt to the change of wind direction.
In various embodiments of the present invention, preferably, said wind-driven generator further comprises drive mechanism;
Said wind direction detector is a wind vane;
Said dynamic structure comprises motor, and this motor is connected with said drive mechanism to drive said wind guiding device rotation through said drive mechanism;
Said controller comprises a pair of node switch and the normally closed node switch often opened that is connected with said motor respectively; The said a pair of node switch of often opening is fixedly connected with said wind guiding device; The said a pair of both sides that the node switch is separately positioned on said wind vane of often opening, said normally closed node switch are arranged on said a pair of often opening between the node switch;
Wherein, one of them is said when often driving the node switch when said wind vane the time touches in motion, starts said motor and drive said wind guiding device through said drive mechanism to clockwise rotate; Another is said when often driving the node switch when said wind vane the time touches in motion, starts said motor and drive said wind guiding device through said drive mechanism to rotate counterclockwise; When said wind vane touched said normally closed node switch at the volley, said motor quit work.
In one embodiment of the invention, referring to Fig. 1 and Fig. 2, the wind direction detector is a wind vane 1, and dynamic structure is a motor 8, and motor 8 drives wind guiding device 7 through drive mechanism 9 and rotates.Controller is a plurality of contact switchs, carries out not in the same way the rotation of (clockwise or counterclockwise) according to the variation of wind direction with control wind guiding device.A plurality of contact switchs rotate with the wind guiding device together, and are fixedly connected with the wind guiding device.A plurality of contact switchs comprise the normally-closed contact switch 203 (line between a pair of normally opened contact switch can lay respectively on the different straight lines with the normally-closed contact switch) between the first normally opened contact switch 201, the second normally opened contact switch 202 and this a pair of normally opened contact switch that is separately positioned on the wind vane both sides.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, so that wind vane when rotating according to change of the wind, touches 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 is also controlled motor and is just changeed, and carries out a kind of rotation (for example clockwise direction) of direction thereby drive the wind guiding device through drive mechanism; When the head of wind vane 1 touched another normally opened contact switch, actuating motor was also controlled motor and is reversed, and carried out rightabout rotation (for example counterclockwise) thereby drive the wind guiding device through drive mechanism.When wind vane touched the 3rd normally-closed contact switch 203, motor stopped to start.The 3rd normally-closed contact switch is set effectively protects the use of motor, avoid motor conversion between opening, closing too frequent, damage motor.
In one embodiment of the invention, preferably, the wind guiding device also comprises the top board and the base plate that are used to connect this a pair of curved panel except comprising a pair of curved panel.Preferably, first, second normally opened contact switch and the 3rd normally-closed contact switch are fixed on the top board.
In various embodiments of the present invention, preferably, said wind vane is arranged on said rotating shaft top, and the spin axis of said wind vane overlaps with said rotating shaft;
One of them said side leading wind guide plate is positioned on the elongation line of the residing axis of said wind vane at an end of said 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, for example be directly over, and the rotation axis of wind vane 1 overlaps with rotating shaft 3; Can make the more compact structure of wind wheel like this, and easier drive wind wheel rotates 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 wind vane 1 residing axis at an end 702a at intake grill 703 places; Be easier to be provided with the position of second curved panel like this, make wind not blow to the fan blade that can produce opposing torque as far as possible through the wind direction shown in the wind vane.
In one embodiment of the invention, said drive mechanism comprises worm gear and worm screw, and wherein, said worm gear has rotatingshaft; Said worm screw is connected with said motor and is rotated by said motor drives; Said worm gear is connected with said worm screw and is driven around said rotatingshaft rotation by said worm screw, and said rotatingshaft is arranged on the top of said rotating shaft and is connected to drive said wind guiding device rotation with said wind guiding device.Worm gear and worm screw are common mechanical transmission structures, are convenient to motor drives wind guiding device and carry out the rotation of different direction.
In various embodiments of the present invention, preferably, said wind direction detector is the electronics weathercock, and this electronics weathercock sends the wind direction variable signal to said controller;
Said controller receives said wind direction variable signal and controls said dynamic structure according to this wind direction variable signal and drives said wind guiding device rotation; Make wind flow into said wind wheel from said intake grill; And blow to the said fan blade of the same side of said rotating shaft, flow out through said exhaust outlet afterwards.
In one embodiment of the invention, can also take the mode of electronics or communication to control the wind guiding device rotates.Use the electronics weathercock to detect wind direction; Can obtain the data of change of the wind more accurately, the electronics weathercock is sent to controller with these data as signal, and the variation control dynamic structure of the wind direction that shows according to this signal behind this signal of controller reception drives the wind guiding device and rotates more accurately; Preferably; The angle of change of the wind is identical with the angle that the wind guiding device rotates, so that the wind guiding device can mate with the wind of different wind directions all the time, makes wind only blow to the fan blade of the same side of rotating shaft.
The present invention also provides a kind of electricity-generating method of as aforesaid wind-driven generator, comprising:
Wind flows into said wind wheel from said intake grill;
Wind is directed to the said fan blade of the same side of said rotating shaft, and the said fan blade of the same side of said rotating shaft produces forward moment simultaneously and rotates to drive said rotating shaft;
Said rotating shaft passes to said generator with said forward moment;
Said generator rotates under the driving of said forward moment, and generates electricity.
In various embodiments of the present invention, preferably, the electricity-generating method of described wind-driven generator further comprises:
Said wind guiding device rotates according to the change of wind direction, so that wind is directed to the said fan blade of the same side of said rotating shaft.
In one embodiment of the invention, the wind guiding device is not fixed, is to rotate according to the variation of wind direction, so that the wind energy of different wind directions blows to the fan blade of the same side of rotating shaft all the time, thereby effectively avoids the generation of opposing torque.
In various embodiments of the present invention, preferably, the electricity-generating method of described wind-driven generator further comprises:
When wind-force is excessive or too small, lock said dynamic structure, make said dynamic structure stop to start.
In one embodiment of the invention, when wind-force was excessive, wind wheel was moved in wind; Be enough to make wind wheel to rotate with the speed of higher speed; And the wind guiding device also may be moving with rotation by wind, do not rotate thereby need not restart dynamic structure (for example motor) control wind guiding device, can protect dynamic structure like this; Avoid starting or stoping too frequent, damage dynamic structure.Thereby the size that the wind speed detector detects the size judgement wind-force of wind speed can be set, when wind speed surpasses certain value, can think that wind-force is excessive, need not start dynamic structure.
Generator in one embodiment of the invention, when wind-force is excessive, can carry out speed limit, so that can be stablized, generating effectively to generator.
In one embodiment of the invention, when wind-force is too small, when starting the electric weight that dynamic structure sends more than or equal to wind-driven generator with the electric weight that rotates the wind guiding device and expend; The lockable dynamic structure; Stop to start dynamic structure, with save power, and the working condition of protection dynamic structure.Thereby the size that the wind speed detector detects the size judgement wind-force of wind speed can be set, when wind speed is lower than certain value, can think that wind-force is too small, need not start dynamic structure.
In various embodiments of the present invention, preferably, the electricity-generating method of described wind-driven generator further comprises:
When the change frequency of wind direction is higher than predetermined value, lock said dynamic structure, make said dynamic structure stop to start.
In one embodiment of the invention,, can cause dynamic structure to start continually behind the dynamic structure and stop to start, dynamic structure is caused certain damage owing to start when wind direction when the frequency of (for example 5 seconds to 20 seconds) change of the wind is higher at short notice.At this moment can lock dynamic structure, stop dynamic structure and start, the protection dynamic structure is worked effectively.When detect wind direction stable after, can unlock to dynamic structure.Can detect the situation of change of the wind direction in the short time through the wind direction detector.
In various embodiments of the present invention, preferably, the electricity-generating method of described wind-driven generator further comprises:
When the electrical network electricity at a low ebb period, said generator is through the mode storage of electrical energy of hot accumulation of energy, and the mode that said generator passes through thermo-electric generation again when electrical network needs electricity is to the electrical network transmission of electric energy.
In the prior art, have only annual part-time to generate electricity, electrical network need not use more electric power when the low ebb electricity, at this moment, send out electricity just need store.The present invention is through the mode store power of hot accumulation of energy.Hot accumulation of energy mode is granted patent, and is the accumulation of energy mode to a kind of medium heating.The present invention through send out electricity a kind of medium (for example being transformer oil) is heated, be heated to uniform temperature (for example being 300 ℃), thus to send out electricity store.When electrical network needed electricity consumption, the mode of passing through thermo-electric generation again was to grid transmission.The mode of thermo-electric generation is a kind of existing technology.
Through wind-driven generator provided by the invention and electricity-generating method thereof, can bring at least below a kind of beneficial effect:
1. reduce the loss of effective torque.In the present invention, when wind when intake grill flows into wind wheel, wind guide plate guides wind blows to the fan blade of the same side of rotating shaft, makes it produce forward moment simultaneously; Simultaneously, the wind guide plate effectively stops wind can produce the fan blade of opposing torque to the opposite side of rotating shaft, thereby effectively reduces the generation of opposing torque, to reduce the loss of effective torque.
2. improve the utilization factor of wind energy.Wind guiding device provided by the invention can be directed to wind the fan blade of the same side of rotating shaft, makes wind half or fan blade more than half to the wind wheel, so just can increase the moment of generation, thus the utilization factor of raising wind energy.
3. reduce cost, and expanded service life.Fan blade is processed by the aluminum-magnesium alloy plate, because the aluminum-magnesium alloy price is relatively cheap, can reduce cost; Simultaneously aluminum-magnesium alloy be difficult for getting rusty, in light weight, intensity is high, life time is long than the time of other wind wheels.
4. enlarging application range.Because the wind guiding device just can lead under the 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 installed on the roof of building, and on the support, every have the place of wind to install.Because its power coefficient is high, electric motor power is big, cost of electricity-generating is low, is highly suitable for island, frontier sentry, mountain area, oil pipeline heating, rural area, coastal area, the power supply of villa district or dispersing mode and supplies power to regional power grid.Often all there is gentle breeze in general area in the high-altitude more than 10 meters, and high wind is also arranged sometimes, and the wind guiding device that wind-driven generator of the present invention rotates through the variation that can follow wind direction can either generate electricity it under breeze conditions; Also can under the high wind condition, generate electricity, because it is in light weight, centrifugal force is little; Dry sound is little, and useful horsepower is big, installs simple; Convenient management, cost is low, so can obtain the favor of each side.
5. the balanced throughout the year generating of gentle breeze can be utilized, power generating quality can be guaranteed.Wind-driven generator provided by the invention can all rotate wind wheel through the leading role of wind guiding device under most states, particularly still can rotate under the gentle breeze situation, thereby balanced throughout the year generating guarantees power generating quality.
Wind-driven generator of the present invention can bring great economic benefit, is example with the 30kw type:
(1) 150,000 yuan/platform of generator cost;
(2) 20,000 yuan/platform of wind wheel cost;
(3) 10,000 yuan/platform of support system;
(4) 20,000 yuan/platform of guidance system;
(5) 20,000 yuan/platform of distribution equipment, 1.2 ten thousand yuan/platform of installation and transportation, 1.8 ten thousand yuan/platform of loan interest;
(6) 250,000 yuan/platform of every overall cost;
(7) calculate annual cost by the amortization mode, 8 years=30,000 yuan/year of 250,000 yuan of ÷;
(8) calculate the annual output value by selling electric mode, 180000x0.581 unit=10.5 ten thousand yuan/year;
(9) the annual rate of gross profit that forms is ten thousand yuan/year of 10.5-3=7.5;
(10) just can accomplish 1200 generators if invest 200,000,000 yuan, the annual gross profit that forms is ten thousand yuan=0.9 hundred million yuan/year of 1200x7.5;
(11) every annual electricity generating capacity is 30x250x24=180000kw/;
(12) 180,000 kilowatts=0.17 yuan/kw of 30,000 yuan of ÷ of the electric cost of every degree.
Various embodiment provided by the invention can make up with any-mode as required each other, the technological scheme that obtains through this combination, also within the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also comprises these changes and modification interior.
Claims (10)
1. a wind-driven generator is characterized in that, comprising:
Wind wheel, it comprises rotating shaft and centers on the equally distributed a plurality of fan blades of this rotating shaft;
Generator, it is connected with said rotating shaft;
The wind guiding device, it comprises a pair of side leading wind guide plate that is provided with around said wind wheel, forms intake grill and exhaust outlet between this a pair of side leading wind guide plate, said intake grill and exhaust outlet are separately positioned on said wind wheel opposite to both sides;
Wherein, wind flows into said wind wheel from said intake grill, and blows to the said fan blade of the same side of said rotating shaft, flows out through said exhaust outlet afterwards.
2. wind-driven generator as claimed in claim 1 is characterized in that, said a pair of side leading wind guide plate is a pair of curved panel, and this a pair of curved panel seamlessly transits to said exhaust outlet from said intake grill;
Preferably; Said a pair of curved panel comprises first curved panel and second curved panel; Said rotating shaft is parallel with wind direction at the tangent line of an end at said intake grill place with said first curved panel, and said second curved panel is vertical with wind direction at the tangent line of an end at said intake grill place;
More preferably; Said first curved panel is in the distance of the virtual circumference of the outermost of the end at said intake grill place and said wind wheel; Greater than the distance of this first curved panel in the virtual circumference of the outermost of the end at said exhaust outlet place and said wind wheel, said second curved panel is along concentric with the virtual circumference of the outermost of said wind wheel perpendicular to the camber line on the direction of said rotating shaft.
3. like each described wind-driven generator of claim 1-2, it is characterized in that said wind guiding device has the rotation axis that overlaps with said rotating shaft, said rotating shaft is a vertical pivot, and said wind-driven generator further comprises:
The wind direction detector, it is used to detect the variation of wind direction and starts said wind guiding device rotation;
Dynamic structure, it is connected with said wind guiding device;
Controller; It is connected with said dynamic structure with said wind direction detector respectively; And control said dynamic structure according to the variation of said wind direction and drive said wind guiding device and rotate; Make wind flow into said wind wheel, and blow to the said fan blade of the same side of said rotating shaft, flow out through said exhaust outlet afterwards from said intake grill.
4. wind-driven generator as claimed in claim 3 is characterized in that,
Said wind-driven generator further comprises drive mechanism;
Said wind direction detector is a wind vane;
Said dynamic structure comprises motor, and this motor is connected with said drive mechanism to drive said wind guiding device rotation through said drive mechanism;
Said controller comprises a pair of node switch and the normally closed node switch often opened that is connected with said motor respectively; The said a pair of node switch of often opening is fixedly connected with said wind guiding device respectively with a said normally closed node switch; The said a pair of both sides that the node switch is separately positioned on said wind vane of often opening, said normally closed node switch are arranged on said a pair of often opening between the node switch;
Wherein, one of them is said when often driving the node switch when said wind vane the time touches in motion, starts said motor and drive said wind guiding device through said drive mechanism to clockwise rotate; Another is said when often driving the node switch when said wind vane the time touches in motion, starts said motor and drive said wind guiding device through said drive mechanism to rotate counterclockwise; When said wind vane touched said normally closed node switch at the volley, said motor quit work.
5. wind-driven generator as claimed in claim 4 is characterized in that,
Said wind vane is arranged on said rotating shaft top, and the spin axis of said wind vane overlaps with said rotating shaft;
One of them said side leading wind guide plate is positioned on the elongation line of the residing axis of said wind vane at an end of said intake grill.
6. wind-driven generator as claimed in claim 3 is characterized in that,
Said wind direction detector is the electronics weathercock, and this electronics weathercock sends the wind direction variable signal to said controller;
Said controller receives said wind direction variable signal and controls said dynamic structure according to this wind direction variable signal and drives said wind guiding device rotation; Make wind flow into said wind wheel from said intake grill; And blow to the said fan blade of the same side of said rotating shaft, flow out through said exhaust outlet afterwards.
7. the electricity-generating method like each described wind-driven generator of claim 1-6 is characterized in that, comprising:
Wind flows into said wind wheel from said intake grill;
Wind is directed to the said fan blade of the same side of said rotating shaft, and the said fan blade of the same side of said rotating shaft produces forward moment simultaneously and rotates to drive said rotating shaft;
Said rotating shaft passes to said generator with said forward moment;
Said generator rotates under the driving of said forward moment, and generates electricity.
8. the electricity-generating method of wind-driven generator as claimed in claim 7 is characterized in that, further comprises:
Said wind guiding device rotates according to the change of wind direction, so that wind is directed to the said fan blade of the same side of said rotating shaft.
9. like the electricity-generating method of each described wind-driven generator of claim 7-8, it is characterized in that, further comprise:
When the change frequency of wind direction is higher than predetermined value, lock said dynamic structure, make said dynamic structure stop to start.
10. like the electricity-generating method of each described wind-driven generator of claim 7-9, it is characterized in that, further comprise:
When the electrical network electricity at a low ebb period, said generator is through the mode storage of electrical energy of hot accumulation of energy, and the mode that said generator passes through thermo-electric generation again when electrical network needs electricity is to the 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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| 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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| CN102748227A true CN102748227A (en) | 2012-10-24 |
| CN102748227B CN102748227B (en) | 2015-05-27 |
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| CN201210226632.0A Expired - Fee Related CN102748227B (en) | 2012-06-29 | 2012-06-29 | Wind driven generator and power generation method thereof |
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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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| CN102748227B (en) | 2015-05-27 |
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