DE102012007261A1 - Wind turbine installed in sea, has stator that is connected with rotor hub by spokes provided with rotor blades which are subjected to torsional force - Google Patents

Wind turbine installed in sea, has stator that is connected with rotor hub by spokes provided with rotor blades which are subjected to torsional force Download PDF

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Publication number
DE102012007261A1
DE102012007261A1 DE201210007261 DE102012007261A DE102012007261A1 DE 102012007261 A1 DE102012007261 A1 DE 102012007261A1 DE 201210007261 DE201210007261 DE 201210007261 DE 102012007261 A DE102012007261 A DE 102012007261A DE 102012007261 A1 DE102012007261 A1 DE 102012007261A1
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Germany
Prior art keywords
rotor
ring
wind turbine
spokes
rotor blades
Prior art date
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DE201210007261
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German (de)
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Anmelder Gleich
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Individual
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Individual
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Priority to DE201210007261 priority Critical patent/DE102012007261A1/en
Publication of DE102012007261A1 publication Critical patent/DE102012007261A1/en
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    • 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 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/33—Shrouds which are part of or which are rotating with the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • 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

Abstract

The wind turbine has a stator (9) which is connected with the rotor hub (1) by spokes (7). The spokes are provided with rotor blades which are subjected to torsional force (8). The stator is provided for driving directly the generator pinion (10). The rotation speed of the rotor is controlled by twisting the rotor blades.

Description

Stand der Technik sind Windräder mit starren Rotorblättern. Der Nachteil solch starrer Rotorblätter ist der, dass der optimale Anstellwinkel nur auf einem kleinen Bereich des Rotorblattes realisiert werden kann. Mit Zusatzelementen wie in der Patentanmeldung DE 198 15 519 A1 werden die Strömungsverhältnisse angepasst oder mit einer Aufteilung des Rotorblattes wie beim US-Patent US 4 302 152 oder bei DE 31 26 677 A1 wird an mehreren Stellen des Rotorblattes eine optimaler Anstellwinkel erreicht. Die Anforderungen an die mechanische Festigkeit begrenzen bei freien Rotorblättern großer Rotoren letztlich die Möglichkeiten.The prior art are wind turbines with rigid rotor blades. The disadvantage of such rigid rotor blades is that the optimum angle of attack can only be realized on a small area of the rotor blade. With additional elements as in the patent application DE 198 15 519 A1 The flow conditions are adjusted or with a division of the rotor blade as in US Pat. No. 4,302,152 or at DE 31 26 677 A1 an optimal angle of attack is achieved at several points of the rotor blade. The requirements for mechanical strength ultimately limit the possibilities for free rotor blades of large rotors.

Bei dem vorgestellten Windrad (siehe 1 und 2) gibt ein Ring die mechanische Festigkeit für den Rotor des Windrades. Speichen (7) verbinden die Rotornabe (1) mit dem Rotorring (9). Die Speichen tragen das Rotorblatt (8), welches alle Kräfte, die auf das Rotorblatt einwirken, auf die Speiche übertragen, das Rotorblatt selbst ist somit nur geringen mechanischen Belastungen ausgesetzt.At the presented wind turbine (see 1 and 2 ) gives a ring the mechanical strength for the rotor of the wind turbine. Spokes ( 7 ) connect the rotor hub ( 1 ) with the rotor ring ( 9 ). The spokes carry the rotor blade ( 8th ), which transmit all forces acting on the rotor blade to the spoke, the rotor blade itself is thus exposed to only low mechanical loads.

Das Rotorblatt kann daher einen aerodynamisch optimalen Querschnitt über die volle Länge erhalten und verwindbar ausgeführt werden. Mittels der Verwindung wird an jeder Stelle des Rotorblatts der optimale Anstellwinkel, abhängig von Windgeschwindigkeit, Drehzahl und Belastung eingestellt. Über diese Verwindung kann auch die Drehzahl geregelt werden.The rotor blade can therefore obtain an aerodynamically optimal cross section over the full length and be designed twistable. By means of the twisting, the optimum angle of attack, depending on wind speed, speed and load, is set at each point of the rotor blade. This speed can also be used to control the speed.

Das Rotorlager wird von drei Stützen (4, 5, 6) gehalten, die auf einem Stützring (14) stehen. Der Stützring sitzt auf Drehgestellen, die sich auf einem kreisförmigen Gleis bewegen, welches sich auf dem Fundamentring (15) befindet. Der Stützring mit den Stützen wird dem Wind nachgeführt. Wenn die hinteren Stützen Windleitflächen besitzen, so kann diese Nachführung passiv erfolgen.The rotor bearing is supported by three supports ( 4 . 5 . 6 held on a support ring ( 14 ) stand. The support ring sits on bogies that move on a circular track, which is located on the foundation ring ( 15 ) is located. The support ring with the supports is tracked to the wind. If the rear supports have wind deflectors, this tracking can be done passively.

Der Rotorring treibt direkt das Generatorritzel an. Über das Durchmesserverhältnis wird das Übersetzungsverhältnis eingestellt. Wenn sich der Generator im Mittelpunkt des Rotationskreises befindet, kann er fest mit dem Untergrund verbunden werden, was eine problemlose Abnahme des Stroms ermöglicht.The rotor ring directly drives the generator pinion. About the diameter ratio, the gear ratio is set. When the generator is in the center of the circle of rotation, it can be firmly connected to the ground, allowing for a smooth flow of electricity.

Bei Windrädern auf dem Land liegt der Fundamentring (15) auf dem Boden auf, ein Fundament im Boden ist nicht erforderlich. Die Standfestigkeit wird durch die Geometrie erreicht, dabei ist von Vorteil, dass sich in Höhe der Rotornabe keine schweren Komponenten befinden, der Schwerpunkt so relativ tief liegt.For wind turbines in the country the foundation ring ( 15 ) on the ground, a foundation in the ground is not required. The stability is achieved by the geometry, it is advantageous that there are no heavy components at the height of the rotor hub, the center of gravity is relatively low.

Bei off-shore Anlagen wird der Fundamentring über Stützen auf drei im Dreieck angeordnete schwimmende Röhren (17) gesetzt. Mehrere dieser Dreiecke können zu einer schwimmenden Insel verbunden werden („Röhrenteppich”). 3 zeigt solch eine Anordnung. Über den Füllungsgrad dieser Röhren kann die Eigenfrequenz des Systems und damit seine Stabilität eingestellt werden. Der Tiefgang des Verbundsystems ist sehr gering, so dass auch im Flachwasser solche Windräder montiert werden können. Die Montage der Windräder erfolgt in einer Werft, sie werden dann zum Einsatzort geschleppt und dort verbunden, die Montageleistungen auf See sind so minimal.In off-shore installations, the foundation ring is supported by three triangular floating tubes ( 17 ) set. Several of these triangles can be connected to a floating island ("Tube Carpet"). 3 shows such an arrangement. About the degree of filling of these tubes, the natural frequency of the system and thus its stability can be adjusted. The depth of the composite system is very low, so that even in shallow water such wind turbines can be mounted. The assembly of the wind turbines takes place in a shipyard, they are then towed to the place of use and connected there, the assembly services at sea are so minimal.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • DE 19815519 A1 [0001] DE 19815519 A1 [0001]
  • US 4302152 [0001] US 4,302,152 [0001]
  • DE 3126677 A1 [0001] DE 3126677 A1 [0001]

Claims (9)

Windrad gekennzeichnet dadurch, dass der Rotorring (9) mittels Speichen (7) mit der Rotornabe (1) verbunden ist. Die Speichen tragen die verwindbaren Rotorblätter (8).Pinwheel characterized in that the rotor ring ( 9 ) by means of spokes ( 7 ) with the rotor hub ( 1 ) connected is. The spokes carry the twistable rotor blades ( 8th ). Windrad nach Anspruch 1, gekennzeichnet dadurch, dass der Rotorring (9) direkt das Generatorritzel (10) antreibt.Windmill according to claim 1, characterized in that the rotor ring ( 9 ) directly the generator pinion ( 10 ) drives. Windrad nach Anspruch 1, gekennzeichnet dadurch, dass eine Andruckrolle (12) auf einem drehbar gelagerten Arm (13) den Kontakt des Rotorrings (9) mit dem Generatorritzel (10) gewährleistet.Windmill according to claim 1, characterized in that a pressure roller ( 12 ) on a rotatably mounted arm ( 13 ) the contact of the rotor ring ( 9 ) with the generator pinion ( 10 ) guaranteed. Windrad nach Anspruch 1 gekennzeichnet dadurch, dass mittels der Verwindung der Rotorblätter die Drehzahl des Windradrotors geregelt wird.Wind turbine according to claim 1, characterized in that by means of the twisting of the rotor blades, the speed of the wind turbine rotor is controlled. Windrad nach Anspruch 1 gekennzeichnet dadurch, dass sich der Generator (11) im Zentrum des Rotationskreises befindet.Windmill according to claim 1, characterized in that the generator ( 11 ) is in the center of the circle of revolution. Windrad nach Anspruch 1 gekennzeichnet dadurch, dass das Rotorlager von mindestens drei Stützen gehalten wird, die auf einem Stützring (14) stehen. Dieser Stützring rotiert auf einem kreisförmigen Gleis, welche sich auf dem Fundamentring (15) befindet.Windmill according to claim 1, characterized in that the rotor bearing is held by at least three supports which rest on a support ring (10). 14 ) stand. This support ring rotates on a circular track, which lies on the foundation ring ( 15 ) is located. Stützen nach Anspruch 6 gekennzeichnet dadurch, dass durch Windleitflächen an den Stützen das Windrad in den Wind gedreht werden kann.Supports according to claim 6, characterized in that the wind turbine can be turned into the wind by wind deflecting surfaces on the supports. Windrad nach Anspruch 1 gekennzeichnet dadurch, dass bei einem off-shore Betrieb der Fundamentring mit dem kreisförmige Gleis (15) mittels Tragstützen auf drei schwimmenden Röhren (17) steht, die in Form eines Dreiecks miteinander verbunden sind.Windmill according to claim 1, characterized in that in an off-shore operation the foundation ring with the circular track ( 15 ) by means of support posts on three floating tubes ( 17 ), which are connected in the form of a triangle. Röhren nach Anspruch 8 gekennzeichnet dadurch, dass durch eine partielle Füllung die Eigenfrequenz des Verbundsystems eingestellt werden kann.Tubes according to claim 8, characterized in that the natural frequency of the composite system can be adjusted by a partial filling.
DE201210007261 2012-04-12 2012-04-12 Wind turbine installed in sea, has stator that is connected with rotor hub by spokes provided with rotor blades which are subjected to torsional force Withdrawn DE102012007261A1 (en)

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Application Number Priority Date Filing Date Title
DE201210007261 DE102012007261A1 (en) 2012-04-12 2012-04-12 Wind turbine installed in sea, has stator that is connected with rotor hub by spokes provided with rotor blades which are subjected to torsional force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210007261 DE102012007261A1 (en) 2012-04-12 2012-04-12 Wind turbine installed in sea, has stator that is connected with rotor hub by spokes provided with rotor blades which are subjected to torsional force

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DE102012007261A1 true DE102012007261A1 (en) 2013-10-17

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302152A (en) 1979-06-25 1981-11-24 Jensen Ronald N Anti-moment gyro for windmill
DE3126677A1 (en) 1981-07-07 1983-01-20 Erno-Raumfahrttechnik Gmbh, 2800 Bremen Rotor blade design for high-speed rotors
DE19815519A1 (en) 1998-03-31 1999-10-07 Tacke Windenergie Gmbh Rotor blade for a wind turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302152A (en) 1979-06-25 1981-11-24 Jensen Ronald N Anti-moment gyro for windmill
DE3126677A1 (en) 1981-07-07 1983-01-20 Erno-Raumfahrttechnik Gmbh, 2800 Bremen Rotor blade design for high-speed rotors
DE19815519A1 (en) 1998-03-31 1999-10-07 Tacke Windenergie Gmbh Rotor blade for a wind turbine

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