FR2614941A1 - Axial thrust regulating device for a wind machine rotor - Google Patents

Axial thrust regulating device for a wind machine rotor Download PDF

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Publication number
FR2614941A1
FR2614941A1 FR8706545A FR8706545A FR2614941A1 FR 2614941 A1 FR2614941 A1 FR 2614941A1 FR 8706545 A FR8706545 A FR 8706545A FR 8706545 A FR8706545 A FR 8706545A FR 2614941 A1 FR2614941 A1 FR 2614941A1
Authority
FR
France
Prior art keywords
rotor
blades
tension
wind
shaft
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
FR8706545A
Other languages
French (fr)
Original Assignee
Lafeuille Bruno
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 Lafeuille Bruno filed Critical Lafeuille Bruno
Priority to FR8706545A priority Critical patent/FR2614941A1/en
Publication of FR2614941A1 publication Critical patent/FR2614941A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F03D7/02Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022Adjusting aerodynamic properties of the blades
    • F03D7/0224Adjusting blade pitch
    • 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
    • F05B2260/00Function
    • F05B2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • 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
    • F05B2260/00Function
    • F05B2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • 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
    • F05B2260/00Function
    • F05B2260/70Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/79Bearing, support or actuation arrangements therefor
    • 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

Abstract

The invention relates to a device for automatically varying the pitch of a wind machine of horizontal axis making it possible to limit the axial thrust and offering the possibility of stopping the rotor as desired. It is made up of a cable 8 carrying a swivel 7 passing through the axis of the hollow shaft 5 of the rotor and connected by means of a pulley block 6 and return pulleys 3 to the trailing edge 1 of the blades. The pivoting of the blades under the effect of an increase in force of the wind gives rise to the displacement of a counterweight 10 connected to the free end of the axial cable 8. The device according to the invention is intended for wind machines and wind generators of horizontal axis.

Description

DESCRIPTION
La présente invention concerne un dispositif de variation automatique du pas des rotors d'éoliennes et d'aérogénérateurs a axe horizontal.
DESCRIPTION
The present invention relates to a device for automatically varying the pitch of the rotors of wind turbines and wind turbines with a horizontal axis.

La régulation de régime des rotors basée sur le principe de l'augmentation d'incidence (décrochage aérodynamique) entraîne des inconvénients = rotor bruyant, arrêt difficile par fort vent, augmentation indéfinie de la poussée axiale avec la vitesse du vent. Les systèmes de régulation par réduction d'incidence qui évitent ces inconvénients diffèrent selon le mode de commande du pas
I) dispositif centrifuge
2) commande coaxiale de type aéronauticue
3) pales indépendantes rappelées par ressorts
4) poussée d'un contrepoids sur butee coaxiale coulissant è 1 'exté-
rieur de l'arbre du rotor et reliée aux pales.
Rotor speed regulation based on the principle of increased incidence (aerodynamic stall) has drawbacks = noisy rotor, difficult stopping in strong winds, indefinite increase in axial thrust with wind speed. Incidence reduction control systems which avoid these drawbacks differ according to the pitch control mode
I) centrifugal device
2) aeronautical type coaxial control
3) independent blades recalled by springs
4) thrust of a counterweight on a sliding coaxial stop to the outside
of the rotor shaft and connected to the blades.

On observe que seuls les dispositifs des types 2 et 4 permettent de commander l'arrêt du rotor. Cependant le type 2 entraîne une mise en oeuvre très complexe avec un asservissement couteux. Le type 3 impose un couple de rappel souvent croissant au niveau des pales alors qu'il devrait au contraire être rapidement décroissant. Enfin, le type 4 entraîne des problèmes d'encombrement, de réglage et de cout considérables. It is observed that only devices of types 2 and 4 make it possible to control the stopping of the rotor. However type 2 involves a very complex implementation with an expensive servo. Type 3 imposes an often increasing return torque at the blades when it should on the contrary be rapidly decreasing. Finally, type 4 leads to problems of space, adjustment and considerable cost.

Le dispositif selon l'invention remédie à ces inconvénients. Il comporte des câbles reliés au bord de fuite des pales et passant sur des poulies de renvoi fixées en amont de l'arbre creux du rotor. Ces câbles sont raccordés a l'intérieur de l'arbre a un câble axial porteur d'un émerillon. Ce câble sort en aval de l'arbre et, circulant sur une poulie de renvoi solidaire du bâti de l'éolienne, se termine par un contrepoids dont le rôle consiste a équilibrer la tension du câble liée a la pression du vent normale au rotor. The device according to the invention overcomes these drawbacks. It comprises cables connected to the trailing edge of the blades and passing over idler pulleys fixed upstream of the hollow shaft of the rotor. These cables are connected inside the shaft to an axial cable carrying a swivel. This cable exits downstream of the shaft and, circulating on a deflection pulley secured to the frame of the wind turbine, ends with a counterweight whose role is to balance the cable tension related to the wind pressure normal to the rotor.

Selon une forme de réalisation préférentielle, un palan fixé au point de jonction des câbles de pale et relié par son brin libre à l'émerillon permet de réduire la masse du contrepoids. According to a preferred embodiment, a hoist fixed at the junction point of the blade cables and connected by its free strand to the swivel makes it possible to reduce the mass of the counterweight.

La figure nO I représente, en coupe, le dispositif selon l'invention. Figure nO I shows, in section, the device according to the invention.

Des câbles (2) relient le bord de fuite des pales (I) a un point de jonction (4) par l'intermédiaire de poulies de renvoi (3) fixées sur l'arbre creux (5) du rotor. Un palan (6) fixé d'une part au point de jonction (4) et d'autre part à l'arbre creux (5) est relié par son-brin libre a l'émerillon (7) lui-meme relié au contrepoids (10) par le cible (8) passant sur la poulie (9). Cables (2) connect the trailing edge of the blades (I) to a junction point (4) by means of deflection pulleys (3) fixed on the hollow shaft (5) of the rotor. A hoist (6) fixed on the one hand to the junction point (4) and on the other hand to the hollow shaft (5) is connected by its free-strand to the swivel (7) itself connected to the counterweight (10) by the target (8) passing over the pulley (9).

La figure nO 2 représente en coupe une variante de ce dispositif les câbles (2) relient le bord de fuite des pales (I) à un chariot coaxial (2 bis) mobile sur l'arbre creux (5). Un palan multiple (6) fixé d'une part au chariot (2 bis) et d'autre part à l'extrémité de l'arbre est relié par ses brins libres à l'émerillon (7) par l'intermédiaire des poulies de renvoi (3) l'émerillon (7) est relié au contrepoids (10) par le câble (8) porté par la poulie (9). Figure 2 shows in section a variant of this device the cables (2) connect the trailing edge of the blades (I) to a coaxial carriage (2a) movable on the hollow shaft (5). A multiple hoist (6) fixed on the one hand to the carriage (2 bis) and on the other hand to the end of the shaft is connected by its free strands to the swivel (7) via the pulleys of return (3) the swivel (7) is connected to the counterweight (10) by the cable (8) carried by the pulley (9).

L'application industrielle du dispositif selon l'invention est liée à son adoption dans la construction des éoliennes et aérogénérateurs.  The industrial application of the device according to the invention is linked to its adoption in the construction of wind turbines and wind turbines.

Claims (9)

REVENDICAtIONS I) Dispositif de régulation de poussée axiale pour rotor d'éolienne ou d'aérogénérateur à axe horizontal, caractérisé en ce qu'il comporte des éléments de liaison rigides ou souples, passant par l'axe, reliant les pales à un organe de tension extérieur au rotor fixé au châssis de 11 éolienne.  I) Axial thrust control device for wind turbine or wind turbine rotor with horizontal axis, characterized in that it comprises rigid or flexible connecting elements, passing through the axis, connecting the blades to a tension member outside the rotor fixed to the chassis of 11 wind turbines. 2) Dispositif selon la revendication (1), caractérisé en ce que des poulies de renvoi (3) permettent le centrage d'un câble (8) porteur d'un émerillon (7) sur l'axe de l'arbre creux (5) du rotor. 2) Device according to claim (1), characterized in that return pulleys (3) allow the centering of a cable (8) carrying a swivel (7) on the axis of the hollow shaft (5 ) of the rotor. 3) Dispositif selon la revendication (2), caractérisé en ce qu'un chariot mobile (2 bis) coaxial et extérieur à l'arbre (5), constitue la jonction entre les éléments de liaison reliés aux pales. 3) Device according to claim (2), characterized in that a mobile carriage (2 bis) coaxial and external to the shaft (5), constitutes the junction between the connecting elements connected to the blades. 4) Dispositif selon les revendications (2) ou (3), caractérise en ce qu'un palan (6), interne ou externe à l'arbre, intercalé entre les pales et l'organe de tension, augmente la course de l'organe de tension. 4) Device according to claims (2) or (3), characterized in that a hoist (6), internal or external to the shaft, interposed between the blades and the tension member, increases the stroke of the tension organ. 5) Dispositif selon les revendications (2) ou (4), caractérisé en ce que la jonction (4) des éléments de liaison reliés aux-pales s'effectue à l'intérieur de l'arbre (5) du rotor après passage de câbles sur des poulies de renvoi (3). 5) Device according to claims (2) or (4), characterized in that the junction (4) of the connecting elements connected to the blades takes place inside the shaft (5) of the rotor after passage of cables on return pulleys (3). 6) Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de tension est un lest (10) de poids variable. 6) Device according to any one of the preceding claims, characterized in that the tension member is a ballast (10) of variable weight. 7) Dispositif selon l'une quelconque des revendications (1), (2), (3), (4) et (5), caractérisé en ce que l'organe de tension est un système élastique. 7) Device according to any one of claims (1), (2), (3), (4) and (5), characterized in that the tension member is an elastic system. 8) Dispositif selon l'une quelconque des revendications (1), (4), (6) et (7) caractErise en ce que.l'élément de liaison interne à l'arbre creux (5) du rotor est un tube coaxial rigide calé sur butée mobile. 8) Device according to any one of claims (1), (4), (6) and (7) caractEise in that the internal connecting element to the hollow shaft (5) of the rotor is a coaxial tube rigid fixed on mobile stop. 9) Dispositif selon l'une quelconque des revendications précédentes,. carac térisé en ce qu'une commande auxiliaire externe au rotor permet d'agir sur l'or- gane de tension en toutes circonstances.  9) Device according to any one of the preceding claims ,. Characterized in that an auxiliary control external to the rotor makes it possible to act on the tension member in all circumstances.
FR8706545A 1987-05-07 1987-05-07 Axial thrust regulating device for a wind machine rotor Withdrawn FR2614941A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8706545A FR2614941A1 (en) 1987-05-07 1987-05-07 Axial thrust regulating device for a wind machine rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8706545A FR2614941A1 (en) 1987-05-07 1987-05-07 Axial thrust regulating device for a wind machine rotor

Publications (1)

Publication Number Publication Date
FR2614941A1 true FR2614941A1 (en) 1988-11-10

Family

ID=9350941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8706545A Withdrawn FR2614941A1 (en) 1987-05-07 1987-05-07 Axial thrust regulating device for a wind machine rotor

Country Status (1)

Country Link
FR (1) FR2614941A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437947A (en) * 2013-08-14 2013-12-11 赵东南 Multi-vane type horizontal full-automatic domestic wind driven generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437947A (en) * 2013-08-14 2013-12-11 赵东南 Multi-vane type horizontal full-automatic domestic wind driven generator
WO2015021575A1 (en) * 2013-08-14 2015-02-19 Zhao Dongnan Multi-blade, horizontal-type, fully automatic, domestic wind power generator

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