WO2013004156A1 - Pale à section transversale constante, procédé de formation de cette pale et rotor de turbine éolienne à axe horizontal comprenant cette pale - Google Patents

Pale à section transversale constante, procédé de formation de cette pale et rotor de turbine éolienne à axe horizontal comprenant cette pale Download PDF

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Publication number
WO2013004156A1
WO2013004156A1 PCT/CN2012/077981 CN2012077981W WO2013004156A1 WO 2013004156 A1 WO2013004156 A1 WO 2013004156A1 CN 2012077981 W CN2012077981 W CN 2012077981W WO 2013004156 A1 WO2013004156 A1 WO 2013004156A1
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WO
WIPO (PCT)
Prior art keywords
blade
section
constant cross
impeller
mold
Prior art date
Application number
PCT/CN2012/077981
Other languages
English (en)
Chinese (zh)
Inventor
张向增
Original Assignee
Zhang Xiangzeng
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 Zhang Xiangzeng filed Critical Zhang Xiangzeng
Publication of WO2013004156A1 publication Critical patent/WO2013004156A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • 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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
    • F03D1/0641—Rotors characterised by their aerodynamic shape of the blades of the section profile of the blades, i.e. aerofoil profile
    • 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
    • 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
    • F03D1/0675—Rotors characterised by their construction elements of the blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0025—Producing blades or the like, e.g. blades for turbines, propellers, or wings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/50—Building or constructing in particular ways
    • 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
    • F05B2250/00—Geometry
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
    • 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
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
    • F05B2280/6003—Composites; e.g. fibre-reinforced
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a fiber reinforced resin composite blade having a constant cross section formed by a continuous pultrusion process, which is fixed by a truss structure or a cable structure, and can easily realize a large horizontal axis wind turbine
  • the large diameter impeller required, the impeller of this construction greatly reduces the cost of the wind turbine impeller.
  • the invention belongs to the field of composite blade manufacturing, or to the field of horizontal axis wind turbine manufacturing. Background technique
  • the equivalent power is achieved at a lower cost, which can be explained as: If an inexpensive process is used to manufacture the blades of equal section, and the blade is used with the lightweight structure to manufacture the impeller, although the blades are pneumatic The efficiency may be reduced a little, but the large-diameter impeller can be easily achieved, and the increase in the swept area contributes to the power loss to the power loss caused by the decrease in efficiency.
  • the current blade molding is statically intermittently formed one by one in a specific mold. This process is usually: preformed main beam system, preformed pneumatic pressure surface, preformed pneumatic suction surface, and then bonded together with structural adhesive. Finally, the adhesive parts are re-reinforced.
  • the so-called large diameter impeller can be understood as an impeller with a diameter of 80 m or more.
  • the idea of the invention is to manufacture a blade with a constant cross section by a continuous pultrusion process of a fiber reinforced resin composite material, which is not sufficiently resistant to large bending moments and torques due to its light weight and thinness, so on the impeller A truss structure or a cable structure must be provided to secure the blade and maintain stability in operation.
  • each blade must be capable of independent pitch control, which is a must for modern horizontal axis fans. To achieve this, the blade and the joint structure must be connected by bearings.
  • the pultrusion process to form a continuous composite profile is a mature process.
  • a fiber-reinforced resin composite blade having a typical aerodynamic structural profile, consisting of resin and fiber, can be completely achieved by a pultrusion process, with the result that a blade segment having a constant cross section is of course produced.
  • a full-size blade, from the tip to the root of the blade, can be composed of several segments of chord lengths, each of which is a pultrusion of a segment having a constant cross section.
  • chord length from the tip to the blade root is constant and has a constant cross section.
  • the blade segments are preferably joined by a joint flange and bolt structure, which facilitates replacement.
  • the blades are subject to torque, only the blades of the longitudinal continuous fibers cannot meet the strength requirements. It is desirable to introduce a cloth or felt having a transverse fiber distribution in the pultrusion process.
  • the result is a composite structure in which the blades are composed of a combination of longitudinal fibers and transverse fibers.
  • the transverse fibers comprise diagonal fibers that are placed at an angle to the longitudinal direction. These can be achieved by multi-axial fiber cloth.
  • a solid foam sandwich material can be introduced into the wall of the blade.
  • High-speed moving wind turbine blades must be blades with a specific geometric airfoil for efficient lift-to-drag ratio aerodynamic performance.
  • Due to the difference in linear velocity from the tip to the root of the blade to achieve an ideal aerodynamic angle of attack for all leaf elements (leaf micro-element segments) of the blade length, it is necessary that the constant cross-section of the blade segment is along the length of the blade.
  • This torsion is a type of torsion in which the blade cross section surrounds the central axis of the blade pitch. This torsional angle is solidified in the geometry of the blade.
  • the fibers of such composite blades may be carbon fibers, glass fibers, organic fibers, etc., or a combination thereof.
  • the resin may be a polyester resin, an epoxy resin, an epoxy-based epoxy resin or the like.
  • the continuous fibers are immersed in the resin and collected into a heated mold cavity. Under the continuous stretching force of the traction mechanism, the fibers of the impregnated resin continue to walk in the mold and are hardened by chemical reaction and then removed from the mold cavity. After cooling, a composite blade segment having a constant cross section of a particular chord length is obtained. This is the pultrusion composite blade.
  • the resin-impregnated longitudinal continuous fibers When the resin-impregnated longitudinal continuous fibers are brought together, they are supplemented with a transversely oriented fiber cloth (multi-axial cloth, woven cloth, etc.) or fiber mat, continuously passed through the heated mold cavity, and the reaction is solidified and removed from the mold. After cooling, A composite blade segment having a constant cross section of a particular chord length is obtained. The introduction of transverse fibers enhances the shear strength of the blade shell.
  • the resin-impregnated longitudinal continuous fibers are brought together by continuous laying of the solid foam core material, continuously passing through the heated mold cavity, reacting and solidifying out of the mold, and cooling to obtain a composite blade having a constant cross section with a specific chord length. Fragment.
  • the introduction of the sandwich material greatly increases the buckling resistance of the blade against compression forces.
  • each differential cross-section is continuously twisted at an angle about the central axis of the pitch. Since the blade is a hollow structure, there are necessarily two parts of the cavity outer mold and the inner cavity mold of the mold during pultrusion, and the two portions define the shape of the drawn hollow blade.
  • the invention adopts a cantilever support structure extending outside the mold cavity at the inlet of the mold to support the cavity inner mold, so that the cavity inner mold can be suspended in the outer cavity of the cavity.
  • the root of the blade naturally has a transitional structure connected to the hub, and the tip of the blade naturally has a sharp structure that reduces tip eddy current loss and lightning protection. All of these tip and root profiled structures, as well as transitional structures between different chord-length blade segments, do not affect the essential features of the pultrusion constant cross-section blade set forth herein.
  • the constant cross-sectional vane of the present invention can also be formed by a conventional vacuum infusion process, or by hand lay-up. However, the most suitable one is continuous pultrusion molding.
  • the impellers of the two operating modes can be assembled with the blades of the invention.
  • One is the early fixed pitch fan impeller, and the other is the contemporary variable pitch impeller.
  • the stator blade of the fixed-blade fan is defined as the main part of the blade is fixedly connected to the hub, and only a small section of the tip can be rotated, and the part is turned to adjust the power and the pneumatic brake when parking.
  • the variable pitch fan impeller cylinder is explained by the fact that the entire blade can be adjusted at the blade root to achieve the blade windward angle adjustment, which can realize the brake feathering when parking.
  • an impeller, an impeller of a horizontal-axis wind turbine consisting of constant-section composite blades, consisting of a blade, a blade fixing mechanism, a blade pitching mechanism, and a hub, characterized in that: the impeller is at least Containing 3 blades; a segment containing at least one constant cross section along the longitudinal length of each blade; the blade has a front end axial connection structure connected by a common support point at the front end of the impeller, although it is a diagonally pulled structure, The axial force of the bearing blade restrains the deformation deflection of the blade, and the lateral connection structure between the blades is located in the rotation surface of the blade, and is used for carrying the lateral force transmitted between the blades; the connection between the connecting structure and the blade The point is located at the aerodynamic working section between the blade root and the tip of the blade, which is different from the prior art truss structure constructed between the blade root and the hub.
  • a conductivity-conducting structure can be designed, that is, an impeller structure in which the blades are mounted at a certain inclination angle. Each blade pitch axis and the impeller rotation axis form an angle greater than 90 degrees, the blade is swept back, and the blades have a rear end axial connection structure connected by a common support point at the rear end of the impeller.
  • the transverse joint structure and the blade, the front end axial joint structure and the blade, the rear end axial joint structure and the blade are fixedly connected. More than 80% of the length of the blade, a portion of the blade segment located at the tip end of the blade, which is less than 20% of the blade length, is cantilevered, and the mounting point has a slewing mechanism that supports the rotation of the blade tip segment.
  • variable pitch structure impeller has been summarized, and the transverse joint structure and the blade, the front end axial joint structure and the blade, the rear end axial joint structure and the blade are all connected by a bearing.
  • the most ideal bearing is a non-metallic full-sealed bearing that is dust-proof, corrosion-resistant, and resistant to aging, and should also be a thrust bearing. Since the bearing force is not very large, a self-lubricating wear-resistant bearing like PTFE can meet the requirements. From the elaboration of this paper, it can be found that the constant cross-section composite blade is manufactured by the pultrusion process, and the blade itself has the advantages of low cost and high reliability.
  • the impeller of the invention has great advantages in suppressing the vibration of the fan, balancing the load caused by the wind shear, smoothing the load, and prolonging the fatigue life of the blade and the spindle bearing.
  • the impeller composed of such a blade structure is characterized by the fact that the blades are abnormally thin and light, and each blade is a combined state of the blade segments, which is of great significance especially for the offshore wind turbine. On the one hand, the reliability of the wind wheel is improved, and on the other hand, even if the blade is replaced. It is necessary to hoist the entire impeller and replace it with a single blade or a single blade.
  • Figure 1 is a schematic diagram of a constant cross-sectional blade structure divided into three sections
  • Figure 2 is a side elevational view showing the mounting state of a blade of an impeller
  • Figure 3 is a schematic axial view of the mounting state of three blades of an impeller
  • Figure 4 is a schematic perspective view of a three-blade impeller
  • Figure 5 is a schematic illustration of a method of pultrusion of a blade segment.
  • Fig. 4 1 - constant cross section, 2 - joint point, 3 - blade tip, 4 - blade root, 5 - front end axial joint structure, 6 - front end common support point, 7 - front strut, 8 _ hub , 9 _ rear common support point, 10 - rear axial joint structure, 11 - hub flange, 12 - lateral joint structure, 13 - nacelle, 14 tower.
  • the blade has a length of 50 m and a blade impeller structure.
  • Figure 1 shows a blade consisting of three segments of constant cross-section, with increasing chord length from tip to root. And each segment has a moderate twist angle.
  • the length of L1 is 20m
  • L2 is 20m
  • L3 is 10m.
  • a three-section constant cross-section segment 1 is combined into one blade.
  • the joint point 2 is a joint point for fixing the blade
  • the tip 3 is a structure that combines rectification and lightning protection
  • the blade root 4 is a structure in which the blade and the hub are connected.
  • the view on the right side of Figure 1 is a cross-sectional view. It shows a hollow structure with a good lift-to-drag ratio and aerodynamic shape.
  • a schematic view of the axially mounted connection state of one blade on the impeller is shown, and the circumferential connection between the blades is omitted.
  • the other blades in the impeller are installed in the same way.
  • there is a front strut 7 in front of the hub 8 and the front end axial joint structure 5 is connected together through the front common support point 6 to balance and balance the pulling force.
  • the front end axial joint structure 5 may be a truss structure or a cable structure.
  • the rear end axial joint structures 10 are joined together by a common support point 9 at the rear end.
  • the rear axial joint structure 10 can be a truss structure or a cable structure.
  • the blade is coupled to the front end axial joint structure 5 through the joint point 2 and the front end axial joint structure 5.
  • Wind indicates the direction of the wind when the impeller is in operation, and the impeller is in the windward state.
  • the blade is connected by the blade root 4 and the hub 8.
  • the impeller is connected to the nacelle spindle by means of a hub flange 11 .
  • the most cylindrical type of blade installation is that there is no rear end axial joint structure 10, only the front end axial direction
  • the joint structure 5 is also a cable structure.
  • This kind of impeller requires that the impeller should always be kept in the wind direction from the beginning of the installation of the fan, and it can not withstand the wind blowing force in the opposite direction.
  • the mounting angle a between the blade and the horizontal axis of rotation of the impeller can be 90° or greater than 90°. Since the space between the blade and the tower column is limited, the angle a is greater than 90°.
  • the blade thus mounted has a swept posture. It is completely different from the current conventional blade installation with a forward tilting posture. This type of impeller naturally does not require the blade to have a pre-bent shape.
  • Fig. 3 an axial view of the installation state of three blades of an impeller is shown, which is a schematic view; the purpose is to indicate the lateral connection state between the blades.
  • This lateral connection is located in the plane of revolution of the blade.
  • the longitudinal connection between the blades is omitted in the figure.
  • the three blades are joined together as a whole by a transverse joint structure 12.
  • the lateral joint structure 12 may be a truss structure or a cable structure. The most simple one is the structure of the cable. This joint structure realizes the transmission and bearing of the impeller torque composed of thin and thin blades.
  • Fig. 4 a three-dimensional structure diagram of a complete impeller is shown; a case of a wind turbine impeller formed by a cable structure by a cable structure is fully illustrated.
  • Fig. 4 the assembly relationship between the nacelle 13, the tower 14, and the impeller is illustrated. This is an up-and-down operational design. Of course, such an impeller can also be installed in a downwind running assembly relationship.
  • the constant cross-section section 1 is connected by the blade root 4 and the hub 8, and the front end axial joint structure 5 and the rear end axial joint structure 10 are fixed by the joint point and the blade.
  • the distance between the common support point 6 at the front end and the blade root 4 affects the force applied to the blade and the front end axial joint structure.
  • the distance between the back end common support point 9 and the blade root 4 affects the force applied to the blade and the rear axial joint structure.
  • the axial joint structure, the transverse joint structure and the joint point 2 secure the blade.
  • the axially connected structure carries the windward force of the blade, and the transverse joint structure carries the torsional force of the blade.
  • the specific axial and lateral joining structures are not limited to the illustrated connecting lines.
  • the impeller of the present invention may also be a multi-blade impeller with the same joining characteristics.
  • the blade may be a single chord blade from the tip to the root of the blade, or a combination of multiple segments of the chord with different chord lengths.
  • the location of the common junction 2 is arranged as desired, not necessarily at the junction between the two segments, and the location of the junction 2 is within the range of the pneumatic working segment of the blade.
  • the segments are connected by a connecting flange and a bolt structure, which can facilitate future maintenance and replacement.
  • the joint point 2 in Fig. 4 which is a fixed joint structure in the fixed-blade fan impeller, is a dead joint. It appears as a bearing connection structure in the pitch fan fan.
  • Figure 5 illustrates a method of forming such composite blades by a pultrusion process.
  • the continuous fiber 51 is continuously impregnated by the resin groove 52, and the fiber cloth 53 is continuously assisted, and if necessary, the solid foam material 54 is introduced. These materials are combined into the cavity 55, and the resin is rapidly reacted and solidified by the heat curing device 56, and is solidified after curing.
  • a constant cross-section segment 1 having the required geometry.
  • the pultrusion power is derived from the directional walking traction of the traction mechanism 57.
  • the cavity 55 needs to be long enough, and the cross-section of the cavity profile requires continuous torsion to produce a composite blade having a specific twist angle.
  • the shaping of the torsion angle of the blade requires adaptation of the curing reaction speed and the traction speed of the resin.
  • the cavity length also depends on the curing reaction rate and the pulling speed.
  • a cross-sectional view of the constant cross-section section 1 is shown in the A-A view, which is a hollow structure, so that the cavity 55 is composed of a cavity outer mold 511 and a cavity inner mold 512. Due to the presence of the transverse fibers of the blade skin, it is necessary to have a cantilever support 513 located outside the cavity 55 to fix the cavity inner mold 512 so that the cavity inner mold 512 is suspended in the cavity outer mold 511. The fibers, resin, and sandwich material enter the cavity 55 together and are solidified to form a constant cross-sectional segment 1 .
  • the blades formed by this pultrusion process have a precise geometry and therefore exhibit ideal aerodynamic characteristics.
  • the invention realizes a low-cost, high-reliability, lightweight large-diameter horizontal-axis wind turbine set

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Composite Materials (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention porte sur une pale d'éolienne. Elle décrit une pale composite à matrice en résine renforcée de fibres ayant une section transversale constante, elle crée un procédé de formation de cette pale et un rotor de turbine éolienne comprenant la pale, la pale étant principalement composée de résine, de fibres et d'une matière de noyau, et elle peut être constituée par une structure combinée de multiples fragments de pale (1). Chacun des fragments de pale a une section transversale constante ayant une longueur de corde spécifique, et les longueurs de corde des différents fragments de pale diffèrent les unes des autres. La pale est fixée sur un moyeu (8) du rotor au moyen d'une structure à câbles tendus, de manière à réaliser une pale ayant un pas fixe ou un pas variable. La pale formée par pultrusion possède une très haute stabilité de qualité et un profil géométrique extérieur de haute précision. Le rotor de grand diamètre, qui est nécessaire dans une turbine éolienne à axe horizontal, peut être réalisé avec la pale décrite ci-dessus, de sorte que le rotor peut avoir une haute précision de profil aérodynamique, une faible flèche de déformation sous la contrainte et une grande surface balayée d'une pale de grande longueur, de manière à réaliser un effet de prise de vent idéale.
PCT/CN2012/077981 2011-07-04 2012-06-30 Pale à section transversale constante, procédé de formation de cette pale et rotor de turbine éolienne à axe horizontal comprenant cette pale WO2013004156A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110185669.9 2011-07-04
CN201110185669.9A CN102305174B (zh) 2011-07-04 2011-07-04 带扭角恒定横截面拉挤复合材料叶片及其拉挤成型方法

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Publication Number Publication Date
WO2013004156A1 true WO2013004156A1 (fr) 2013-01-10

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PCT/CN2012/077981 WO2013004156A1 (fr) 2011-07-04 2012-06-30 Pale à section transversale constante, procédé de formation de cette pale et rotor de turbine éolienne à axe horizontal comprenant cette pale

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WO (1) WO2013004156A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022128040A1 (fr) * 2020-12-17 2022-06-23 Vestas Wind Systems A/S Éolienne à commande de pas dotée d'éléments de liaison de pale

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305174B (zh) * 2011-07-04 2014-07-16 张向增 带扭角恒定横截面拉挤复合材料叶片及其拉挤成型方法
CN102434384A (zh) * 2011-11-11 2012-05-02 张向增 一种水平轴风力发电机组新型复合材料叶片
DE102012208428A1 (de) * 2012-05-21 2013-11-21 Evonik Industries Ag Pul-Core-Verfahren mit PMI-Schaumkern
CN105003393B (zh) * 2015-06-29 2017-12-12 东方电气（天津）风电叶片工程有限公司 一种具有除冰防冰功能的风力发电机叶片前缘保护层
WO2017137012A1 (fr) * 2016-02-14 2017-08-17 北京艾派可科技有限公司 Système d'énergie utilisant l'énergie de gaz sous pression relative et procédé d'énergie
CN110005575B (zh) * 2019-04-17 2024-06-14 戚永维 一种全叶尖叶轮式双驱高效风力发电机
EP4308813A1 (fr) * 2021-03-18 2024-01-24 Vestas Wind Systems A/S Éolienne à commande de pas dotée d'éléments de liaison de pale et de pales fendues
WO2024120598A1 (fr) * 2022-12-09 2024-06-13 Vestas Wind Systems A/S Procédé de réhabilitation d'une éolienne
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85202949U (zh) * 1985-07-19 1986-05-07 张志明 分段直形水平轴高速风力机桨叶
CN101230834A (zh) * 2007-12-25 2008-07-30 黄金伦 张拉式风力机风轮
CN101392720A (zh) * 2007-09-17 2009-03-25 通用电气公司 用于连接涡轮叶片的系统和方法
CN101463794A (zh) * 2007-12-19 2009-06-24 通用电气公司 多段式风力涡轮机叶片及其组装方法
CN101695871A (zh) * 2009-11-12 2010-04-21 江苏九鼎新材料股份有限公司 一种大型风力叶片及其制作工艺
CN101718250A (zh) * 2010-01-11 2010-06-02 华锐风电科技(集团)股份有限公司 风力发电机组分段式风轮叶片及其装配方法
CN101876292A (zh) * 2009-04-28 2010-11-03 通用电气公司 分段式风力涡轮机叶片
CN101943106A (zh) * 2009-07-05 2011-01-12 宿迁雅臣工程尼龙有限公司 一种适用于500kw以下三叶片风力机高分子复合材料叶片
CN102305174A (zh) * 2011-07-04 2012-01-04 张向增 恒定横截面叶片、成型方法、及构成的水平轴风力发电机叶轮
CN102434384A (zh) * 2011-11-11 2012-05-02 张向增 一种水平轴风力发电机组新型复合材料叶片

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9417406D0 (en) * 1994-08-30 1994-10-19 Gec Alsthom Ltd Turbine blade
CN1250387C (zh) * 2004-04-08 2006-04-12 程逸建 带横向纤维螺纹的复合材料螺纹杆拉挤缠绕旋转成型方法及设备

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85202949U (zh) * 1985-07-19 1986-05-07 张志明 分段直形水平轴高速风力机桨叶
CN101392720A (zh) * 2007-09-17 2009-03-25 通用电气公司 用于连接涡轮叶片的系统和方法
CN101463794A (zh) * 2007-12-19 2009-06-24 通用电气公司 多段式风力涡轮机叶片及其组装方法
CN101230834A (zh) * 2007-12-25 2008-07-30 黄金伦 张拉式风力机风轮
CN101876292A (zh) * 2009-04-28 2010-11-03 通用电气公司 分段式风力涡轮机叶片
CN101943106A (zh) * 2009-07-05 2011-01-12 宿迁雅臣工程尼龙有限公司 一种适用于500kw以下三叶片风力机高分子复合材料叶片
CN101695871A (zh) * 2009-11-12 2010-04-21 江苏九鼎新材料股份有限公司 一种大型风力叶片及其制作工艺
CN101718250A (zh) * 2010-01-11 2010-06-02 华锐风电科技(集团)股份有限公司 风力发电机组分段式风轮叶片及其装配方法
CN102305174A (zh) * 2011-07-04 2012-01-04 张向增 恒定横截面叶片、成型方法、及构成的水平轴风力发电机叶轮
CN102434384A (zh) * 2011-11-11 2012-05-02 张向增 一种水平轴风力发电机组新型复合材料叶片

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIU, SENCHUAN ET AL.: "Pultruded Composites in H-rotor Vertical Axis Wind Turbine Blade Application", FIBER COMPOSITES, March 2011 (2011-03-01), pages 35 - 37 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022128040A1 (fr) * 2020-12-17 2022-06-23 Vestas Wind Systems A/S Éolienne à commande de pas dotée d'éléments de liaison de pale
US12066003B2 (en) 2020-12-17 2024-08-20 Vestas Wind Systems A/S Pitch controlled wind turbine with blade connecting members

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