WO2009109028A1 - Centrale éolienne - Google Patents

Centrale éolienne Download PDF

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Publication number
WO2009109028A1
WO2009109028A1 PCT/BY2009/000002 BY2009000002W WO2009109028A1 WO 2009109028 A1 WO2009109028 A1 WO 2009109028A1 BY 2009000002 W BY2009000002 W BY 2009000002W WO 2009109028 A1 WO2009109028 A1 WO 2009109028A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind
blades
rotation
wheels
power installation
Prior art date
Application number
PCT/BY2009/000002
Other languages
English (en)
Russian (ru)
Inventor
Пётр Николаевич ВОРОБЬЁВ
Original Assignee
ВОРОБЬЕВ, Олег Александрович
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ВОРОБЬЕВ, Олег Александрович filed Critical ВОРОБЬЕВ, Олег Александрович
Publication of WO2009109028A1 publication Critical patent/WO2009109028A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors
    • F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having a plurality of rotors coaxially arranged
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to wind energy and can be used in wind power plants (wind turbines) with an axis of rotation that coincides with the direction of the wind.
  • Wind turbines are known to be classified according to two main features: the geometry of the wind wheel and its position relative to the direction of the wind. Based on this, wind turbines can be horizontally axial or vertically axial.
  • the geometry of the wind wheel determines which rotational force the wind turbine uses. If in a wind turbine the rotational force is the drag force (drag machine), then the linear speed of rotation of the ends of the blades is usually less than the wind speed. If in a wind turbine the rotational force is the lifting force (elevator machine), then the linear speed of rotation of the blades significantly exceeds the wind speed [1].
  • the disadvantages of the known wind turbine is the small unit power, the instability of the wind turbine due to the inconstancy of the wind flow.
  • the path of action of the wind force on the blade of the wind wheel is limited by the projection of 2 blades on the plane of the axis of rotation in the direction of the wind.
  • it is necessary to increase the diameter of the wind wheels which sharply increases the cost of the whole wind turbine (increase the installation height of the wind turbine, increase the exclusion zone around the device, the complexity of maintenance).
  • the wind turbine is not resistant to destructive gusts of wind due to its high altitude and windage.
  • An object of the invention is to facilitate and simplify the design of a wind turbine, increase its efficiency, protection from heavy and hurricane winds.
  • each subsequent wind wheel is rotated along the axis of rotation, relative to the previous one, by more than 5 °, in the direction opposite to the rotation of the wind wheel.
  • the upper edges of the blades of the windwheels of each row are connected to the upper edges of the blades of the windwheels of the next row with the help of screws forming helical lines of the multi-pass thread.
  • New in the present invention is that each subsequent wind wheel is rotated along the axis of rotation, relative to the previous one, by more than 5 °, in the direction opposite to the rotation of the wind wheels, while the upper edges of the blades of the wind wheels of each row are connected to the upper edges of the blades of the wind wheels of the next row with using screws that form helical lines of spatial multiple thread.
  • the successive rotation of the wind wheels forms a spatial spiral, which rotates both axial and air flows directed at an angle to the axis of rotation.
  • Driving a wind wheel streams air gradually lose speed and strength, and are discarded by centripetal acceleration on the screws. Screws redirect them along the axis of the working shaft, increasing the path of exposure to the force of air flows, allowing the full use of the energy of the wind flow.
  • a variant of the invention is possible, in which the auger has a profile of a trough deployed with a convex side in the direction of rotation of the wind wheels.
  • the described increases the speed of rotation of the auger with a lateral air flow.
  • a variant of the invention is also possible in which the edge of the base remote from the support tower has the ability to move vertically with the base deviating from the horizontal 0 ° - 45 °.
  • the described allows you to increase the area of the air flow acting on the wind turbine. Also, it becomes possible to lift part of the wind wheels to a great height, where stronger and more constant wind flows prevail.
  • a variant of a wind turbine is possible, in which there is a feedback unit that changes the angle of inclination of the base depending on the strength of the wind.
  • the feedback node with a critical increase in air flow automatically reduces the angle of inclination of the base with the working shaft (up to a horizontal position), reducing the air pressure on the entire structure, which protects the wind turbine from squall and hurricane winds.
  • a variant of the invention is also possible in which the working shaft with windwheels is made in the form of series-connected sections transmitting to each other the torque of the working shaft, while the screws connect the blades only within the section.
  • section extreme from the support tower terminates in a wind wheel that is not connected to the screws, and is 1.5 or more times the diameter and geometric filling of the remaining wind wheels.
  • the wind wheel plays the role of an aerodynamic stabilizer that turns the shaft with wind wheels to the wind, while it also gives additional torque to the working shaft.
  • a variant of a wind turbine is possible, in which the windwheels on the shaft and the screws on the blades are mounted with the possibility of adjustment, while the product of the helical line and the calculated shaft rotation speed is equal to the calculated wind speed. This allows you to adjust the wind turbine under the wind characteristic of a particular area.
  • Figure l presents a side view of a wind turbine (sections are presented schematically).
  • Figure 2 presents a top view of a wind turbine.
  • Fig. 3 shows the wind wheels of one section, two of the three augers are shown conditionally.
  • the wind power installation (Fig. 1) consists of a turntable 1 with a support tower 2, a base 3, a working shaft 4, consisting of several sections 5, wind wheels 6 installed on the working shaft 4, a service platform 7, an electric generator 8 and a gearbox 9.
  • the turntable 1 is a single or multi-track web (for example, rail), closed in a circle.
  • the base 3 is made in the form of a supporting metal structure, supported by rail cars 10 of the turntable 1 and pivotally mounted on the supporting tower 2.
  • the working shaft 4 consists of sections 5 connected by a rigid gear clutch 11.
  • a fragment of the working shaft 12 (Fig. 3) is a pipe segment, at the ends of which There are trunnions for mounting bearings and gear half couplings.
  • Wind wheels 6 are fixedly mounted on a fragment of the working shaft 12 in a certain sequence using fasteners.
  • three-bladed wind turbines 6 with a calculated wind speed of 10 m / s, a rotation speed of 2.5 rpm, and a relative displacement around the circumference of each subsequent wind wheel 6 equal to 90 °, should be installed on the working shaft 4 with a distance of lm.
  • the blades 13 of the windwheels 6 will form helical lines of three-way threads with a stroke of 4 m along the length of the working shaft 4. That is, the product of the helix stroke by the calculated rotational speed of the working shaft 4 is equal to the estimated wind speed.
  • Such equality should be observed based on the inseparable movement of the material point in the direction along the proposed helical line of the working shaft 4 at a given estimated wind speed.
  • screws 14 are installed with a profile in the form of a chute, with a convex side in the direction of rotation of the working shaft 4.
  • the ratio of the projection of the screw 14 on the axis of the blade to the blade length 1 / 8-1 / 12.
  • a wind wheel 15 of aerodynamic stabilization is cantilevered.
  • the wind wheel 15 of aerodynamic stabilization has a diameter exceeding the diameter of the wind wheel 6 by 1.8 times, the geometric filling of the wind wheel 15 exceeds the geometric filling of the wind wheel 6 by 2 times.
  • the service platform 7 is located on the base 3 above the support tower 2. At the service platform 7, an electric generator 8 and a gearbox 9 are installed.
  • the gearbox 9 consists of a drive sprocket and a driven sprocket, in which the sprockets rotate in needle bearings. On the About Novation 3, bearings for fragments of the working shaft 12 are mounted.
  • the support tower 2 divides the length of the base 3 in a ratio of 1/6.
  • a system of levers 16 and counterweights 17 is mounted on the carts 10 of the turntable 1.
  • the angle of inclination of the base 3 is changed automatically and at a wind speed of 2-3 times higher than the calculated one, the base 3 lays horizontally on the rigid supports 18 of the carts 11 of the turntable 1.
  • Wind turbines can increase the area of the air flow acting on it, without increasing the diameter of the wind wheels themselves, as well as capture lateral and unstable gusts of wind. At the same time, the effect of uneven wind speed on the amplitude of the generated electricity is reduced. Also, wind turbines are more resistant to destructive gusts of wind and easy to maintain.
  • the invention can be performed on known industrial equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne l'énergie éolienne et peut être utilisée dans des centrales éoliennes dont l'axe de rotation coïncide avec le sens du vent. La centrale éolienne de l'invention comprend une tour de support, un train réducteur, un générateur, une base rotative sur laquelle est disposé un arbre de travail pourvu d'au moins deux roues éoliennes à pales qui sont fixées de façon espacée sur l'arbre. En outre, chaque roue éolienne suivante est orientée, par rapport à la précédente, de plus de 5° le long de l'axe de rotation opposé à la rotation des roues éoliennes. Les bords supérieurs des pales des roues éoliennes de chaque rangée sont raccordés aux bords supérieurs des pales des roues éoliennes de la rangée suivante au moyen de vis sans fin, formant les spirales d'un filetage à plusieurs filets tridimensionnel.
PCT/BY2009/000002 2008-03-03 2009-02-27 Centrale éolienne WO2009109028A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BY20080234 2008-03-03
BYA20080234 2008-03-03

Publications (1)

Publication Number Publication Date
WO2009109028A1 true WO2009109028A1 (fr) 2009-09-11

Family

ID=41055497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BY2009/000002 WO2009109028A1 (fr) 2008-03-03 2009-02-27 Centrale éolienne

Country Status (1)

Country Link
WO (1) WO2009109028A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217501A (en) * 1977-10-11 1980-08-12 Allison William D Mounting for windmills
RU2075631C1 (ru) * 1994-04-07 1997-03-20 Общество с ограниченной ответственностью - Фирма "Общемаш-инжиниринг" Ветродвигатель
US6053700A (en) * 1997-09-24 2000-04-25 Fosdick High-Tek Wind Turbines, Inc. Ducted turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4217501A (en) * 1977-10-11 1980-08-12 Allison William D Mounting for windmills
RU2075631C1 (ru) * 1994-04-07 1997-03-20 Общество с ограниченной ответственностью - Фирма "Общемаш-инжиниринг" Ветродвигатель
US6053700A (en) * 1997-09-24 2000-04-25 Fosdick High-Tek Wind Turbines, Inc. Ducted turbine

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