CN102953928B - Adjust the Universal Windmill that oar is long - Google Patents

Adjust the Universal Windmill that oar is long Download PDF

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Publication number
CN102953928B
CN102953928B CN201210393482.2A CN201210393482A CN102953928B CN 102953928 B CN102953928 B CN 102953928B CN 201210393482 A CN201210393482 A CN 201210393482A CN 102953928 B CN102953928 B CN 102953928B
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China
Prior art keywords
oar
windmill
leaf oar
leaf
wind
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Expired - Fee Related
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CN201210393482.2A
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CN102953928A (en
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李洪泽
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Individual
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Individual
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Priority to CN201610041429.4A priority Critical patent/CN107905945A/en
Priority to CN201610041426.0A priority patent/CN107905943A/en
Priority to CN201610041427.5A priority patent/CN107905957A/en
Priority to CN201610041428.XA priority patent/CN107905944A/en
Priority to CN201210393482.2A priority patent/CN102953928B/en
Publication of CN102953928A publication Critical patent/CN102953928A/en
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Publication of CN102953928B publication Critical patent/CN102953928B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D3/00Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/02Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having a plurality of rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D3/00Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D3/00Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06Rotors
    • F03D3/062Rotors characterised by their construction elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D7/00Controlling wind motors 
    • F03D7/06Controlling wind motors  the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/202Rotors with adjustable area of intercepted fluid
    • F05B2240/2021Rotors with adjustable area of intercepted fluid by means of telescoping blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/30Control parameters, e.g. input parameters
    • F05B2270/328Blade pitch angle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/70Type of control algorithm
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

Abstract

Name of the present invention is called the Universal Windmill adjusting oar long, relates to a kind of wind-force application apparatus field.Windmill is made up of support, leaf oar, leaf oar head, rotating shaft, the long control system of oar etc.2 ~ 4 leaf oars are evenly distributed on around rotating shaft, the aerofoil profile of leaf oar cross section is the wing blade of band camber, and it is oblique rack-mount by leaf oar head, form V-shaped structure, the inclination of leaf oar, the degree of eccentricity, the installation angle of attack all regulate by leaf oar head, thus make air vane oar be in optimum Working; Because 2 ~ 3 joints made by air vane oar, and nest together scalable as radio receiver telescopic antenna, leaf oar can be shortened when wind is large, wind hour extends, stabilize output power or rotating speed, add Wind Power Utilization scope, ensure that the security of operation of windmill simultaneously.Adjust the application of the long Universal Windmill of oar as follows: vertical axis aerogenerator 1, can be done and use, be applied to wind power plant; 2, also water turbine can be made, for without power station, dam, or tidal power generation; 3, children toys can be made.

Description

Adjust the Universal Windmill that oar is long
Technical field
The present invention relates to a kind of wind-force application apparatus field
Background technique
The present invention is on the basis of patent of invention Universal Windmill (patent No.: ZL200310100459.0), through further analyse in depth and a large amount of experimental researcies, prototyping testing, architecture advances and from the patent of invention of new proposition.
Wind energy is the renewable energy sources that occurring in nature cleans.On the earth, available wind energy resources is 20,000,000,000 kW, is 20 times that the earth can utilize water energy.The available wind energy of China's land 10m height layer is 2.53 hundred million kW, and marine available wind energy is 3 times of land, and the available wind energy of 50m height layer is 2 times of 10m height layer.The wind energy resources of China is very abundant, and Xinjiang, Inner Mongol, Gansu one are with wind energy maximum, intensity about 200 ~ 300 watts/meter 2, average 4000 ~ 5000 hours/year (see " Encyclopadia Sinica "-wind energy conversion system).
For centuries, wind-power electricity generation receives the concern of people always.After the World War I, application wind-force generates electricity and once occurs climax, and Denmark, Holland apply also the widest the earliest.Afterwards due to the discovery in oil field, the Middle East, the slower development of wind-power electricity generation cause is got off, until 20 century 70s, due to energy shortage and environmental pollution, just there is climax again in wind-power electricity generation.
Utilize wind-power electricity generation, just first wind energy must be converted into mechanical energy, then again mechanical energy be converted to electric energy with generator.Wind energy is converted into mechanical energy, will utilizes windmill, windmill is the key equipment in wind-power electricity generation process.Of a great variety in view of windmill, sorting technique also has multiple.Be divided into by blade quantity: single blade, double-leaf, Three-blade, quaterfoil and multiple-blade; Be divided into by the relative position on main shaft and ground: horizontal axis, vertical shaft (vertical shaft); Be divided into by blade working principle: lift-type, resistance type.A large amount of wind power plant used is in the majority with Three-blade horizontal axis lift-type (general title propeller cavitation windmill) at present.
Propeller cavitation windmill occurs just being in the middle of constantly improvement from the beginning, but, though through repeatedly improving, but still there is many problems and shortcoming, export unstable, network difficulty, device efficiency is low, equipment easily damages, safety, maintenance, transport ... all there is many problems, the serious development affecting wind-powered electricity generation.
We know, wind energy is the energy of extremely unstable, and wind speed, wind-force, wind direction are all constantly vary anywhere or anytime, and this brings very large difficulty not only to the conversion of wind energy, and gives follow-up acceptance application, also result in very large adverse condition.Make wind electricity digestion difficulty, abandon the phenomenons such as wind problem is serious, wind energy utilization is low, become the Important Problems existed in China's Wind Power Development process, also effectively solved at present;
General wind power generation machine is in order to network and security of operation, and general employing adjusts the method for pitch to adjust power stage or the rotating speed of windmill, but this control is very undesirable, does not reach expection object even at all.By adjustment pitch, to regulating the blade angle of attack, then to power factor, arrive output power again, this control procedure, both unreliable, also unstable, do not reach the power stage of stable windmill or the object of rotating speed at all, can not play much guarantee effects to the Security of windmill at technical elements yet.Some were had to want to use for reference horizontal-shaft wind turbine changes blade lift and resistance by the pitch angle changing blade in the last few years, thus obtain higher this successful experience of wind energy utilization, Variable Pitch technology well combines with vertical axis windmill by imagination, improve startability and the wind energy utilization of vertical axis windmill, develop a kind of new and effective vertical axis windmill, but according to the working principle of lift vertical shaft wind energy conversion system, blade is in the process rotated a circle, on blade, mechanical periodicity is all constantly being carried out in the direction of the linear velocity of every bit, make attack angle of blade too at mechanical periodicity, it is a changing value, and the excursion of the angle of attack and the lift of aerofoil profile, drag-coefficient curve has very large relation, it is very difficult that this just makes to realize above-mentioned imagination.If horizontal axis wind-driven generator is because its blade is in the process rotated a circle, on blade, the direction of the linear velocity of every bit is also all determined, with lift and the resistance of adjusting the method for pitch to change blade, thus obtain higher wind energy utilization, some effects can also be obtained; And lift vertical shaft wind energy conversion system in this way, obtaining some effects just may be very difficult.
A large amount of middle-size and small-size horizontal-shaft wind turbine does not carry out pitch adjustment, this electric power just making wind-driven generator send, suddenly big or suddenly small, suddenly appears and disappear, and has become so-called " rubbish " wind-powered electricity generation, causes very disadvantageous condition to the electrical network of receipt of subsequent and user in reception.
General wind power generation machine also has a fatal weakness, and the moment that can reach generator rated output power (rated wind speed is generally decided to be 10 meter per seconds) is exactly little, when the most of the time is operated in far below rated output power.Why occurring this phenomenon, is because the working state of wind-driven generator and the size of extraneous wind-force are closely related, completely can not ACTIVE CONTROL, and this just causes the significant wastage of power generating equipment, and wind power cost is remained high.Its Security also just spells material, overuse equipment reaches, and seldom has reliable technical guarantee.
The Universal Windmill that the present invention adjusts oar long is according to fluid mechanics principle and aerodynamic principle; after many experiments research and improvement have been carried out to former invention Universal Windmill; make every effort to overcome the propeller cavitation windmill of extensive use in prior art and many shortcomings of Da Lie (Darrieus) windmill; develop more efficient; safer; more economical; more easily by wind generating technology equipment that electrical network receives; be that stable electric power exports by so-called " rubbish " Wind resource change; for protection of the environment; tap a new source of energy, for new contribution is made in energy-saving and emission-reduction! Adjust the long Universal Windmill leaf oar head of oar to regulate the inclination (α) of leaf oar, the degree of eccentricity (β), install the angle of attack (γ), thus make its startability better, efficiency is better; Adopt tune oar length to carry out firm power export and ensure security of operation, thus greatly expand wind-force application area.
Summary of the invention
One, to size mixing long Universal Windmill structure
Windmill is made up of a few parts such as support, leaf oar, leaf oar head, rotating shaft, the long control system of oar.2 ~ 4 leaf oars are evenly distributed on around rotating shaft, and leaf oar is fixed on support by leaf oar head is oblique, form V-shaped structure, and the aerofoil profile of leaf oar cross section is the wing blade of band camber.Fixing windmill shaft in the middle of support, rotating shaft is vertical with support plane of rotation.Leaf Paddle regulates the inclination (α) of leaf oar, the degree of eccentricity (β) by three respective axes of rotation on leaf oar head, installs the angle of attack (γ).2 ~ 3 joints made by leaf oar, and nest together as radio receiver telescopic antenna, and leaf oar inside is provided with slideway and roller, makes leaf oar extend under external force easily and to shorten.
The exhibition of leaf oar has certain angle of inclination to relative to windmill shaft, and the exhibition of leaf oar is defined as leaf oar inclination (α) to the angle of axis and substantially horizontal, represents by angle.
Regulate the size of leaf oar inclination, windmill performance can be affected, and this impact not single but many-sided, or even conflicting.Reduce inclination to increase making the rotary inertia of windmill, according to law of rotation: the angular acceleration of rigid body is directly proportional to its bonding force square, is inversely proportional to the rotary inertia of rigid body, so the rotating speed of windmill can be slack-off, also makes windmill not easily start; Regulate the size of leaf oar inclination, also can affect the angle of attack of leaf oar, thus change the size of lift, affect the power coefficient of windmill.But reduce leaf oar inclination, can increase the wind sweeping area of windmill, increase the wind energy that windmill is caught, this is conducive to again the startup of windmill, increasing power coefficient.So adjustment must consider situation, carefully to carry out.
The ratio of the deviation distance between the pressure line of leaf oar and rotating shaft and its maximum deviation distance is defined as the degree of eccentricity (β), represents with percentage.The detent torque that the size of the degree of eccentricity (β) produces when being subject to wind-force effect with the leaf oar angle of attack and leaf oar is relevant, and the degree of eccentricity (β) is large, and the detent torque of generation is just large.But degree of eccentricity increase can increase the rotational resistance of windmill, reduce power factor.
The angle of the aerofoil profile string of a musical instrument and airflow direction is defined as the leaf oar angle of attack, and the angle of attack of it and aircraft wing is suitable.The airflow direction that note that here refers to the direction of the airspeed (i.e. relative speed of wind) that the linear velocity vector of blade circular movement and wind vector synthesize, and obviously, this direction constantly changes with the change of wind speed and the change of windmill rotating speed.When windmill is static, the angle of the aerofoil profile string of a musical instrument and substantially horizontal is defined as and installs the angle of attack (γ), represents by angle.So, the leaf oar angle of attack be by the angle of attack (γ) is installed and the variable angle of attack that constantly changes with the change of wind speed dimerous.The angle of attack (γ) is installed in suitable change, the leaf oar angle of attack can be made to be in the optimum state, and be no more than stall angle, makes windmill efficiency factor best.
Gear and generator are installed below wind wheel rotating shaft.
Two, working principle
Air vane oar is oblique rack-mount by leaf oar head, can be regulated leaf oar inclination (α), the degree of eccentricity (β), the installation angle of attack (γ) by leaf oar head, it is maximum that this just can make air vane oar be in starting torque, efficiency optimum Working.
Windmill is when static state, and being fixed on support because leaf oar is oblique and has certain degree of eccentricity (β), its windward side is different from the drag size that adverse wind face produces wind, just creates starting torque and makes Windmill rotary.
After Windmill rotary gets up, because the leaf oar of windmill is the wing blade of band camber, is obliquely fixed on support and has certain degree of eccentricity (β), according to aerodynamic principle, leaf oar will produce lift.Again because leaf oar tilts, so lift is just broken down into the component that is parallel to plane of rotation and the component perpendicular to plane of rotation.Be parallel to the component of surface of revolution, the moment that support is rotated will be produced, thus accelerate Windmill rotary.The quickening of Windmill rotary, makes lift increase, and impels again the moment of rotation to increase, makes the faster of Windmill rotary ..., material is thus formed positive feedback, improve windmill efficiency.Perpendicular to the component of surface of revolution, serve the effect alleviating bearing pressure, also just alleviate the rotational resistance of wind wheel.
2 ~ 3 joints made by air vane oar, and nest together as radio receiver telescopic antenna.Leaf oar inside is provided with slideway and roller, makes leaf oar carry out easily extending and shortening, just can take following control strategy:
One, continuous print proportion integration differentiation output power setting control is carried out to leaf oar length, realize constant power output;
Two, discontinuous stair like control strategy is carried out to leaf oar length, realize the step variation of output power;
Three, according to wind speed size, carry out program control, make windmill have different leaf oar length in different wind-force ranks;
Four, Non-follow control or remote control, shortens when wind is large, and wind hour extends, and is mainly used in the security of operation ensureing windmill, increases Wind Power Utilization scope.
Here it is pointed out that 1, as hope increases power, need the length, the width that increase leaf oar, also will increase the size of windmill support and leaf oar head.2, the angle of inclination (α) of leaf oar, the degree of eccentricity (β), the angle of attack (γ), to efficiency and the starting torque of windmill, affect very large, need meticulous design and adjustment, also automatic adjusting mechanism (to large scale computer) be can install additional, angle of inclination (α), the degree of eccentricity (β) of fixed propeller automatically adjusted according to wind speed size and power factor.3, adjust oar long Universal Windmill to make (to large, medium and small type machine) when vertical shaft windmill uses, angle of inclination (α) be 60 degree ~ 80 degree proper; Adjust oar long Universal Windmill also can use (minicomputer) as horizontal axis windmill, angle of inclination (α) be 10 degree ~ 30 degree proper.
Three, device characteristic
1, because the leaf oar cross section of windmill is the airfoil being with camber, and and between rotating shaft, have employed the i.e. eccentric but also V-shaped special construction tilted, so, after leaf oar rotates, just suffered wind-force is converted to lift, again lift has been resolved into vertical stress component and horizontal component, the component perpendicular to surface of revolution makes windmill gravity reduce, thus reduces the frictional force of bearing; Be parallel to the component of surface of revolution, the moment that support is rotated will be produced, thus accelerate Windmill rotary; The quickening of Windmill rotary, makes lift increase, and impels again the moment of rotation to increase, Windmill rotary is obtained faster ...Go round and begin again like this, be just equivalent to output signal to lead back input end, define positive feedback, improve windmill efficiency.Windmill positive feedback signal flow chart is shown in the Fig. 7 among Figure of description.
2, leaf oar is oblique rack-mount by leaf oar head, forms V-shaped structure, leaf oar major part weight is acted on support chassis, and the power acted on leaf oar is little, thus improves leaf oar intensity;
3, leaf oar is oblique rack-mount by leaf oar head, form V-shaped structure, manufacture scalable leaf oar to leaf oar and create condition, also long square being directly proportional to wind sweeping area of oar is made, be directly proportional to output power, control to provide good basis to the power of windmill, make control sensitiveer more effective;
4, leaf oar is oblique rack-mount by leaf oar head, forms V-shaped structure, for multiple windmill several angle that staggers is connected up and down and provided condition; Multiple windmill is connected into tree-shaped, greatly improves startability and the power stage of windmill.
5, structure is simple, and material is extensive, low cost of manufacture, and efficiency is high, maintenance, transport, easy for installation.
6, the angle of inclination (α) of leaf oar, the degree of eccentricity (β), the angle of attack (γ) all regulate by leaf oar head, can regulate by off-line, also can realize on-line automatic adjustment, make windmill be in high efficiency the optimum state all the time.
7, oar length can regulate automatically, also can manual tune.Due to long square being directly proportional to wind sweeping area of oar, be directly proportional to output power, that is, oar is long to double, and output power is increase by four times just; If allow output power fix (such as, being decided to be rated output power), so, oar is long to double, and the wind speed of input just can reduce by 1.6 times.In other words, if rated power is the wind-driven generator (only under the wind speed of 10 meter per seconds, just can reach a kilowatt) of 1K watt, as long as present 6 meter per seconds, just one kilowatt can be reached.And wind speed higher than 6 meter per second time, blade just shortens, thus can ensure constant power output, considerably increases the scope that utilizes of wind energy, and ensures that wind energy conversion system is in running at full capacity all the time; When the wind-force in the external world is excessive, the oar of windmill is long to be shortened, and also ensure that windmill safety.
Four, apply
1, vertical axis windmill can be done use;
2, can be applicable to wind power plant, carry out wind-power electricity generation;
3, also water turbine can be made, for without power station, dam, or tidal power generation;
4, children toys can be made.
Accompanying drawing explanation
Fig. 1 support leaf oar head plan view;
Fig. 2 support leaf oar head front view;
Fig. 3 windmill plan view;
Fig. 4 windmill front view;
Fig. 5 leaf oar A-A profile;
Fig. 6 windmill stereogram (for reference);
Fig. 7 windmill positive feedback signal flow chart;
Fig. 8 windmill closed loop control system signal flow graph;
In Fig. 1: 1---main shaft; 2---support; 3---leaf oar head; 4---inclination rotating shaft;
5---degree of eccentricity rotating shaft;
In Fig. 2: 6---angle of attack rotating shaft is installed; 7 motors;
In Fig. 3: 8---leaf oar; The direction of arrow is Windmill rotary direction;
In Fig. 4: 9---top end plate;
In Fig. 5: 10---siphonal lobe oar; 11---internal lobe oar; 12---guide rail; 13---leaf oar internal support;
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6;
Skeleton is done with lightweight materials such as aluminum alloys, covering is done with materials such as aluminum alloy, color steel, corrosion resistant plate, galvanized sheet irons, internal lobe oar (11), siphonal lobe oar (10) is made according to the air-foil of band camber, guide rail (12) is done in siphonal lobe oar inside, at the appropriate location of internal lobe oar dress pulley, on top dress top end plate (9), two joint leaf oars are nested together, and it can be made to extend shortening with rope or chain.
Same lightweight material does support (2) and leaf oar head (3).
Rotating shaft (1) and leaf oar head (3) are arranged on support (2), generator (7) is installed below windmill shaft, by corresponding rotating shaft (inclination rotating shaft 4, degree of eccentricity rotating shaft 5, installation angle of attack rotating shaft 6), adjust the inclination (α) of leaf oar (8), the degree of eccentricity (β), the angle of attack (γ), make windmill be operated in angle of attack the optimum state, adjust the long Universal Windmill of oar to be namely successful.
Be loaded on control gear (not drawing in figure), drive rope or chain that leaf oar is controlled according to the length of different control strategies to leaf oar with small motor, safely and steadily run to realize wind-driven generator.
Windmill closed loop control system signal flow graph is shown in the Fig. 8 among Figure of description.

Claims (6)

1. adjust the Universal Windmill that oar is long, be made up of support, leaf oar, leaf oar head, rotating shaft, oar long control system five part, it is characterized in that, 2 ~ 4 leaf oars are evenly distributed on around rotating shaft, and leaf oar is oblique rack-mount by leaf oar head, form V-shaped structure; Leaf oar, by three respective axes of rotation on leaf oar head, regulates the inclination (α) of leaf oar, the degree of eccentricity (β), installs the angle of attack (γ); The exhibition of leaf oar is defined as leaf oar inclination (α) to the angle of axis and substantially horizontal, represents by angle; The ratio of the deviation distance between the pressure line of leaf oar and rotating shaft and its maximum deviation distance is defined as the degree of eccentricity (β), represents with percentage; When windmill is static, the angle of the aerofoil profile string of a musical instrument and substantially horizontal is defined as and installs the angle of attack (γ), represents by angle; The aerofoil profile of leaf oar cross section is the wing blade of band camber, and fixed rotating shaft in the middle of support, rotating shaft is vertical with support surface of revolution.
2. a kind of Universal Windmill adjusting oar long according to claim 1,2 ~ 3 joints made by described leaf oar, and nest together as radio receiver telescopic antenna, leaf oar inside is provided with slideway and roller, makes leaf oar extend under external force easily and to shorten.
3. the Universal Windmill that tune oar according to claim 1 is long, it is characterized in that, after Windmill rotary gets up, because the leaf oar of windmill is the wing blade of band camber, obliquely to be fixed on support and to have certain degree of eccentricity (β), according to aerodynamic principle, leaf oar will produce lift; Again because leaf oar tilts, so lift is just broken down into the component that is parallel to plane of rotation and the component perpendicular to plane of rotation, be parallel to the component of surface of revolution, the moment that support is rotated will be produced, thus accelerate Windmill rotary, the quickening of Windmill rotary, lift is increased, impels again the moment of rotation to increase, make the faster of Windmill rotary, material is thus formed positive feedback, improve windmill efficiency; Perpendicular to the component of plane of rotation, make windmill weight saving, decrease rotational resistance.
4. a kind of Universal Windmill adjusting oar long according to claim 1, described leaf oar is oblique rack-mount by leaf oar head, form V-shaped structure, the wind energy that windmill is received by leaf oar, just be directly proportional to the wind sweeping area of leaf oar, thus make square being directly proportional to output power of described air vane oar length, control the length of leaf oar, just control output power or rotating speed, oar length can take continuous, discontinuous, manual, remote control, programme controlled control strategy, to ensure windmill stable output and security of operation.
5. a kind of Universal Windmill adjusting oar long according to claim 1, described leaf oar is oblique rack-mount by leaf oar head, form V-shaped structure, it is characterized in that, leaf oar major part weight is made to act on support chassis, and the power on leaf oar of acting on is little, thus improve leaf oar intensity, and connect up and down and provide condition for multiple windmill several angle that staggers; Multiple windmill is connected into tree-shaped, greatly improves startability and the power stage of windmill.
6. a kind of Universal Windmill adjusting oar long according to claim 1, installs gear and generator below rotating shaft.
CN201210393482.2A 2012-10-17 2012-10-17 Adjust the Universal Windmill that oar is long Expired - Fee Related CN102953928B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201610041429.4A CN107905945A (en) 2012-10-17 2012-10-17 Adjust the leaf paddle head of the Universal Windmill of paddle length
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