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
  • F03D7/00—Controlling wind motors 
  • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
  • F03D7/022—Adjusting aerodynamic properties of the blades
  • F03D7/0224—Adjusting blade pitch
• • 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
  • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
  • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
• • 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
  • F03D7/00—Controlling wind motors 
  • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
  • F03D7/0204—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
• • 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
  • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
  • F03D80/80—Arrangement of components within nacelles or towers
  • F03D80/88—Arrangement of components within nacelles or towers of mechanical components
• • 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
  • F05B2260/00—Function
  • F05B2260/40—Transmission of power
  • F05B2260/406—Transmission of power through hydraulic systems
• • 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
  • F05B2260/00—Function
  • F05B2260/50—Kinematic linkage, i.e. transmission of position
  • F05B2260/507—Kinematic linkage, i.e. transmission of position using servos, independent actuators, etc.
• • 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
  • F05B2270/00—Control
  • F05B2270/30—Control parameters, e.g. input parameters
  • F05B2270/328—Blade pitch angle
• • 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
• • 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
  • Y02E10/728—Onshore wind turbines
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/18—Mechanical movements
  • Y10T74/18056—Rotary to or from reciprocating or oscillating
  • Y10T74/18272—Planetary gearing and slide

Definitions

• the present invention relates to a wind turbine azimuth or pitch drive.
• An azimuth drive or a pitch drive of a wind turbine typically has one or more electric motors.
• the electric motors are connected via first gears with second gears or pinions, so that an azimuth adjustment of the nacelle for a wind direction tracking of the wind turbine is made possible by rotating the motors in the azimuth drive.
• the servomotors can be braced against each other.
• the whole azimuth bearing can be fixed with a brake.
• the known azimuth drives - as well as known pitch drives - have a conventional Liehe wheel-pinion combination, which generates an undesirable play in the toothing. Furthermore, such a toothing is subject to wear.
• a wind turbine azimuth or pitch drive is provided with a traveling wave drive.
• the traveling wave drive has an outer ring, an inner ring, a flexible ring provided on the inner ring and a plurality of linear drives on the circumference of the inner ring.
• the linear actuators interact with the flexible ring and upon activation of the linear drives, the flexible ring is deformed such that the flexible ring at least temporarily lifts off the inner ring locally.
• An activation of the linear drives takes place in such a way that the linear drives are actuated successively on the circumference of the inner ring.
• the flexible ring at least partially has a wedge-shaped cross-section.
• the wedge-shaped portion of the flexible ring is clamped in the inner ring and cooperates with the linear drives in such a way that the flexible ring is pressed locally on actuation of the linear drives to the outside.
• the linear actuator is actuated hydraulically or electrically.
• the drive optionally has a plurality of follower units along the circumference, which are respectively secured to the flexible ring and the outer ring.
• the invention also relates to a mid-free drive with a traveling wave drive.
• the invention also relates to a wind energy plant with at least one wind turbine-azimuth or pitch drive described above.
• the invention is based on the idea of providing a traveling wave drive as an azimuth drive or as a pitch drive of a wind energy plant.
• a traveling wave drive has no toothing, but for example, an elastic, designed as a rotor ring, which is arranged concentrically to a stiff, designed as a stator ring.
• Radially arranged plunger and linear drives deform the elastic see ring of the rotor locally such that a shaft rotates relative to the stator.
• the outer ring, the inner ring, the flexible ring and the linear drives can when actuated the linear drives (and the interaction of the linear drives with the Fiexring) of the Fiexring have a slightly larger circumference than the inner ring. As a result, the Fiexring relative to the inner ring (around the circumference difference) rotate.
• a traveling wave drive is advantageous because it can ensure a low speed, a high torsional stiffness, a backlash and overload safety.
• Such a drive can be used as an alternative to a wind turbine azimuth drive for other drives that run slowly and must transmit large torques.
• a traveling wave drive according to the invention may be designed without a center, so that z. B. cable and / or mechanic through the middle access to the entire drive and the subsequent premises have.
• This drive can be used to drive or rotate weights> 1t.
• the invention also relates to the use of a traveling wave drive as a drive for low-speed and high torque applying drives. Further embodiments of the invention are the subject of the dependent claims.
• FIG. 1 shows a schematic representation of a traveling wave motor according to a first exemplary embodiment
• FIG. 3 is a perspective sectional view of a traveling wave motor according to a second embodiment
• FIG. 4 is a schematic sectional view of a pressure generating unit for the traveling wave motor according to the second embodiment
• FIG. 5 is a schematic sectional view of a traveling wave motor according to a third embodiment
• FIG Fig. 6 shows a simplified view of a wind turbine with a partially cut gondola.
• Fig. 1 shows a schematic view of a traveling wave drive according to a first embodiment.
• the traveling wave drive has an outer ring 100, an inner ring 200, a number of plungers or linear drives 300, a flexible ring 400 and optionally a plurality of drivers 500, which are fastened to the flex ring 400 and the outer ring 100.
• eight plungers 301-308 are shown.
• the plungers can also be designed as linear drives.
• the flex ring 400 When the plungers or linear drives 300 are not actuated, the flex ring 400 bears against the inner ring 200.
• the plungers or linear drives 301-308 are actuated one after the other so that the flex ring or the points of attack 401-408 on which the plungers 301, 308 engage are locally pressed away from the inner ring 200 by actuation of the respective plungers or linear drives 300
• the flex ring 400 is deformed (locally) at these locations.
• the flex ring is deformed at the points 401 - 402 located at the circumference in such a way that the deformed points in the form of a traveling wave circulate relative to the stator (outer ring) 100.
• the outer ring 100 has a reference point 101
• the inner ring 200 has a reference point 201
• the flex ring 400 has a reference point 401.
• all three reference points 101, 201, 301 are shown in the twelve o'clock position.
• the plungers or linear drives 303-307 are not activated
• the plungers or linear drives 301, 302 and 308 are activated or partially activated.
• the plungers or linear drives 300 are in contact with the flex ring 400.
• the flex ring can press off or deform the inner ring 200 at least in some places, so that the flex ring 400 is (locally) at these locations. no longer in contact with the inner ring 200.
• FIGS. 2A-2C each show a schematic view of the traveling wave drive according to the first embodiment.
• FIGS. 2A, 2B and 2C respectively show an outer ring or stator 100, an inner ring or rotor 200, a flexible ring or flexible ring 400 and a plurality of rams or linear drives 300.
• the flex ring 400 can be acted upon in such a way that the flex ring deforms (locally) at the points under attack thus released from the inner ring 200.
• FIGS. 2A, 2B and 2C three different timings are shown during operation of the traveling wave drive according to the first embodiment.
• the state shown in Fig. 2A substantially corresponds to the state shown in Fig. 1.
• the reference points 101, 201 and 401 are exactly in a twelve o'clock position.
• the outer ring 100 is, the inner ring 200 is and the traveling wave is also.
• a time is shown, in which the outer ring 100 has moved by 11, 25 °.
• the traveling wave is in this case, for example, moved by 90 ° and the inner ring 200 is fixed.
• a situation is shown in which the reference points 101, 201 and 401 are no longer in the same position.
• the plungers or linear drives 301, 302, 308 have been activated
• the plungers or linear drives 302, 303 and 304 are activated.
• the plungers 301-308 now engage second points of attack 401a-408a.
• the points 401-408 on the flex ring 400 have each moved by 11, 25 °.
• FIG. 2C shows another time point in the migration of the traveling wave.
• the rams or linear drives 304-306 are activated.
• the outer ring is 22.5 ° and the traveling wave has moved 180 °.
• the plungers 301-308 each engage the engagement points 401b-408b.
• Fig. 3 shows a perspective sectional view of a traveling wave drive according to a second embodiment.
• the traveling wave drive has an outer ring or rotor 100, an inner ring or stator 200, a flex ring or flexible ring 400 and a number of linear drives or plungers 300.
• the inner ring 200 and the flex ring 400 are arranged concentrically with the outer ring 100.
• the linear drives or plungers 300 are hydraulically operated according to the second embodiment. Alternatively, however, other drives (eg electrical) are possible.
• the linear drives or plunger 300 are connected via a hydraulic line 310 to a hydraulic unit.
• the flex ring 400 Upon activation of the linear drives or plunger 300 (preferably in the radial direction) of the flex ring 400 is deformed at this point, ie it lifts locally from Inner ring 200 from. After deactivation of the plunger or linear drives 300, the deformation of the flex ring is reversed again and there is again a positive fit between the flex ring and inner ring 200.
• the plurality of linear drives or plungers 400 provided in or on the inner ring 200 is preferably provided with a operated high switching frequency. By the shaft in the flex ring 400 this has a slightly larger circumference than the inner ring 200. If the shaft has been rotated one full turn, the flex ring 400 has rotated relative to the inner ring by this circumferential difference.
• the drivers 500 can transmit the rotational movement to the outer ring 100.
• the flex ring 400 is preferably wedge-shaped in cross-section.
• the wedge-shaped portion 410 of the flex ring 400 may be clamped by, for example, a lower and upper portion 210, 220. However, this should be done so that a deformation of the flex ring in the radial direction (with small strokes or deflections) is possible.
• Fig. 4 is a perspective sectional view of a pressure generating unit for the linear actuators or plunger according to the second embodiment.
• the pressure generating unit 500 is connected via the hydraulic hoses 310 to the respective tappets or linear drives 300 (eg, according to the second embodiment).
• the pressure generating unit 500 has a plurality of plungers 520, which are in each case in operative connection with a volume 510, which in turn is in operative connection via the hydraulic hoses 310 with the plungers 300.
• the plunger 520 By actuating the plunger 520, the volume 510 is reduced, so that the pressure within the hydraulic line 310 increases and the plunger or linear actuator 300 is actuated at the end of the hydraulic hose 310.
• the pressure generating unit further comprises a plurality of actuator units 530.
• actuator units 530 may be provided.
• the actuators 530 may be disposed on a rotatable portion 540. This rotatable portion 540 may be driven by an electric motor 550. When the electric motor 550 drives the rotatable portion 540, the actuators 530 will rotate and subsequently actuate the plungers 520 to respectively push inwardly and thus compress the volumes 510 and activate the plungers or linear actuators 300, respectively.
• Fig. 5 shows a perspective sectional view of a traveling wave drive according to a third embodiment.
• the traveling wave drive according to the third embodiment on the traveling wave drive according to the first or second th embodiment are based.
• Fig. 5 shows in particular the assembly of Fig. 3, except that in Fig. 5, the outer ring is shown semi-transparent.
• the traveling wave drive has an outer ring 100, an inner ring 200, a number of rams or linear drives 300 and a flex ring 400 and a number of carriers 500.
• the plungers 300 are connected via hydraulic lines 310, for example with a pressure generating unit, so that the plunger or linear actuators 300 are activated sequentially, so that they deform the flex ring 400 at this point at least temporarily and lift off locally from the inner ring, so that a traveling wave is formed.
• the driver 500 By means of the driver 500, the flex ring 400 is coupled to the outer ring 100.
• These drivers may for example be configured V-shaped, wherein the two free ends can be attached to the outer ring 100, while the pointed end can be attached to the flex ring 400.
• the driver 500 can also be configured as a rod 500.
• Fig. 6 shows a simplified view of a wind turbine with a partially cut gondola.
• the wind energy installation has a tower 10, a gondola 20 mounted thereon, at least one rotor blade 30, a hub 40, a generator 50 and a machine carrier 60.
• the machine carrier 60 is rotatably supported by an azimuth drive 70 on a head of the tower 10.
• the azimuth drive 70 serves for the azimuth tracking or the wind direction tracking of the nacelle. Through the azimuth drive or the wind direction tracking, the nacelle can be moved together with the machine carrier such that the rotor blades are always provided at an optimum angle to the main wind direction.
• the azimuth drive 70 of the wind turbine shown in FIG. 6 may be configured as a traveling wave drive according to the first, second or third embodiment.
• traveling wave drives described above can be used or implemented, for example, in an azimuth drive or a pitch drive of a wind energy plant.
• the traveling wave drive according to the invention can also be used in other drives.
• the traveling wave drive can be used or implemented in a mid-free, slowly rotating drive.

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)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Wind Motors (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
• Hydraulic Motors (AREA)
• Actuator (AREA)
• Transmission Devices (AREA)
• Toys (AREA)

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• 2010
  • 2010-04-12 DE DE102010003879A patent/DE102010003879B4/de not_active Expired - Fee Related
• 2011
  • 2011-04-11 EP EP11713784A patent/EP2558717A2/de not_active Withdrawn
  • 2011-04-11 RU RU2012147834/06A patent/RU2012147834A/ru not_active Application Discontinuation
  • 2011-04-11 KR KR1020127029605A patent/KR20130018295A/ko not_active Application Discontinuation
  • 2011-04-11 BR BR112012025980A patent/BR112012025980A2/pt not_active Application Discontinuation
  • 2011-04-11 CA CA2795391A patent/CA2795391A1/en not_active Abandoned
  • 2011-04-11 JP JP2013504220A patent/JP2013527366A/ja active Pending
  • 2011-04-11 CN CN2011800186503A patent/CN102884315A/zh active Pending
  • 2011-04-11 US US13/640,695 patent/US20130084182A1/en not_active Abandoned
  • 2011-04-11 WO PCT/EP2011/055625 patent/WO2011128291A2/de active Application Filing
  • 2011-04-11 MX MX2012011848A patent/MX2012011848A/es not_active Application Discontinuation
  • 2011-04-12 TW TW100112690A patent/TW201217642A/zh unknown
  • 2011-04-12 AR ARP110101226A patent/AR080958A1/es unknown
• 2012
  • 2012-10-09 CL CL2012002824A patent/CL2012002824A1/es unknown
  • 2012-10-26 ZA ZA2012/08183A patent/ZA201208183B/en unknown

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