EP1642025A1 - Pale de rotor pour eoliennes - Google Patents

Pale de rotor pour eoliennes

Info

Publication number
EP1642025A1
EP1642025A1 EP04738860A EP04738860A EP1642025A1 EP 1642025 A1 EP1642025 A1 EP 1642025A1 EP 04738860 A EP04738860 A EP 04738860A EP 04738860 A EP04738860 A EP 04738860A EP 1642025 A1 EP1642025 A1 EP 1642025A1
Authority
EP
European Patent Office
Prior art keywords
rotor blade
shells
blade according
spring
edge
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Withdrawn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
EP04738860A
Other languages
German (de)
English (en)
Inventor
Peter Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EEW Maschinenbau GmbH
Original Assignee
EEW Maschinenbau GmbH
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 EEW Maschinenbau GmbH filed Critical EEW Maschinenbau GmbH
Publication of EP1642025A1 publication Critical patent/EP1642025A1/fr
Withdrawn legal-status Critical Current

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 
    • F03D1/06—Rotors
    • F03D1/065—Rotors characterised by their construction elements
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • 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
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/24—Manufacture essentially without removing material by extrusion
    • 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
    • F05B2230/60—Assembly methods
    • F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
    • F05B2230/608—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins for adjusting the position or the alignment, e.g. wedges or excenters
    • 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
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a 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
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/13—Geometry two-dimensional trapezial
    • F05B2250/132—Geometry two-dimensional trapezial hexagonal
    • 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
    • F05B2260/30—Retaining components in desired mutual position
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the 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 invention relates to a rotor blade for wind turbines according to the preamble of the main claim.
  • Rotor blades are usually made of GRP composite materials, with two half-shells being molded into shapes made of glass-fiber reinforced plastic and the two half-shells then being glued.
  • the problem arises that during the years in which the rotor blades on the wind turbines are in operation, the mechanical stresses exerted on them cause the adhesive bonds to crack after a long period of time in small areas, into which water can penetrate. This is undesirable because glass fiber reinforced plastic can absorb water and swell in the process.
  • the object of the invention is therefore to create a rotor blade which is less prone to gap formation.
  • recesses on the half-shells for receiving fitting sections, edge regions of the other half-shell or separate profiles.
  • These edge areas can be realized on an opposite half-shell, by means of so-called spring edges, or by form-fitting elements on both half-shells that fit into one another, or to accommodate separate spring extrusion profiles.
  • Right-angled corners are avoided (i.e. the undesired selective transfer of loads on the edges). Nevertheless, the defined adhesive application is made possible by straight side areas.
  • FIG. 2 a representation corresponding to FIG. 1, in which a spring core is used
  • FIG. 3 shows a representation corresponding to FIG. 2, in which a spring core with a round cross section, that is to say in the form of a long cylinder, is used,
  • FIG. 5 shows a representation corresponding to FIG. 4, in which a further inlet groove for the edge protection is provided on the front side, so that it is flush,
  • Fig. 6 shows a rotor blade joining surface on the rear edge of a rotor blade
  • Fig. 7 is a representation corresponding to Fig. 6 with a tapered spring core part between two rotor blade half-shell sections formed as groove parts.
  • the rotor blade shown in FIG. 1 for wind power plants made from half shells connected to one another has two half shell sections on the front, the at least one of the half shells 12 having recesses 14 for receiving fitting sections.
  • a trapezoidal spring is shown that fits into a tapering trapezoidal groove - but, as shown in FIG. 2, a hexagonal spring core that is shown in FIG fits two opposing trapezoidal grooves. This avoids rectangular angles and allows obtuse angles in the adhesive joint.
  • edge protection in addition to the preceding measures and / or as an exclusive adhesive aid arranged on the front, which fits into grooves no longer centrally located in the rotor blade casing, but via grooves open to the front edge and overlaps the groove dimensions with edge sections, and so on in particular to prevent water from penetrating into the adhesive joint, but also to keep mechanical loads away from the adhesive joint, which can occur, for example, when the adhesive joint hits hard objects.
  • FIG. 5 shows a further variant, in which an extruded profile fits into the shell shells in mutually symmetrical grooves, whereby in addition to a T-shaped cross section of the spring or extruded profiles 22 for receiving these extruded profiles, in addition to a longitudinal edge region, at least the leading one Rotor edge, which runs parallel to the recess 14, a further recess 16 parallel to the surface and running longitudinally to the edge is provided on at least one side of the recess 14 for receiving at least one leg 24 of the spring beam profile 22 which extends at right angles.
  • This "sinking" of the edge protector maintains the aerodynamic conditions in a particularly good manner.

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 une pale de rotor pour éoliennes qui est constituée de demi-coquilles (10, 12) assemblées, au moins une de ces demi-coquilles (10, 12) présentant des évidements (14) destinés à loger des parties à emboîter (18) de l'autre demi-coquille ou des pièces à emboîter séparées.
EP04738860A 2003-07-07 2004-07-06 Pale de rotor pour eoliennes Withdrawn EP1642025A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10330733A DE10330733A1 (de) 2003-07-07 2003-07-07 Rotorblatt für Windenergieanlagen
PCT/DE2004/001431 WO2005005825A1 (fr) 2003-07-07 2004-07-06 Pale de rotor pour eoliennes

Publications (1)

Publication Number Publication Date
EP1642025A1 true EP1642025A1 (fr) 2006-04-05

Family

ID=34041672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738860A Withdrawn EP1642025A1 (fr) 2003-07-07 2004-07-06 Pale de rotor pour eoliennes

Country Status (3)

Country Link
EP (1) EP1642025A1 (fr)
DE (1) DE10330733A1 (fr)
WO (1) WO2005005825A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2265760B1 (es) * 2005-03-31 2008-01-16 GAMESA INNOVATION & TECHNOLOGY, S.L. Pala para generadores eolicos.
US20100155009A1 (en) 2005-08-10 2010-06-24 Minoru Hirata Method for making upper and lower molds and an apparatus therefor
US7824592B2 (en) * 2006-09-22 2010-11-02 General Electric Company Bond line forming method
US7740453B2 (en) 2007-12-19 2010-06-22 General Electric Company Multi-segment wind turbine blade and method for assembling the same
US8171633B2 (en) 2007-12-19 2012-05-08 General Electric Company Method for assembling a multi-segment wind turbine blade
US7909576B1 (en) * 2010-06-24 2011-03-22 General Electric Company Fastening device for rotor blade component
CN102338044A (zh) * 2010-07-14 2012-02-01 陈文渊 一种风力发电装置的扇叶结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659444A (en) * 1949-06-21 1953-11-17 Autogiro Co Of America Molded aircraft sustaining rotor blade
DE2658876C3 (de) * 1976-12-24 1983-11-10 Hütter, Ulrich, Prof. Dr.-Ing., 7312 Kirchheim Schalenkörper, beispielsweise Trag- oder Rotorflügel, in Composite-Bauweise
DE3014347C2 (de) * 1980-04-15 1983-05-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Verfahren zur Herstellung von schaumkerngestützen, faserverstärkten Kunststoff-Formkörpern wie Flügel, Rotorblätter etc. großer Längen-und Breitenausdehnung
US4339230A (en) * 1980-04-22 1982-07-13 Hercules Incorporated Bifoil blade

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005005825A1 *

Also Published As

Publication number Publication date
DE10330733A1 (de) 2005-02-17
WO2005005825A1 (fr) 2005-01-20

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