EP1642025A1 - Rotor blade for wind turbines - Google Patents

Rotor blade for wind turbines

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Withdrawn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)
French (fr)
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/en
Withdrawn legal-status Critical Current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

The invention relates to a rotor blade for wind turbines consisting of half-shells (10, 12) that are interconnected. According to the invention, at least one of said half-shells (10; 12) comprises recesses (14) for receiving insertion sections (18) of the other half-shell or separate insertion sections.

Description

Rotorblatt für Windenergieanlagen Rotor blade for wind turbines
Die Erfindung betrifft ein Rotorblatt für Windenergieanlagen nach dem Oberbegriff des Hauptanspruches.The invention relates to a rotor blade for wind turbines according to the preamble of the main claim.
Rotorblätter werden üblicherweise aus GFK- Verbundwerkstoffen hergestellt, wobei zwei Halbschalen in Formen aus glasfaserverstärktem Kunststoff geformt werden und die beiden Halbschalen anschließend verklebt werden. Dabei stellt sich das Problem, dass während der Jahre, in denen die Rotorblätter an den Windkraftanlagen in Betrieb sind, durch die auf sie ausgeübten mechanischen Belastungen die Klebverbindungen nach längerer Standzeit in kleinen Bereichen Spannungsrisse bekommen, in die Wasser eindringen kann. Dies ist unerwünscht, da glasfaserverstärkter Kunststoff Wasser aufnehmen kann und dabei quillt.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.
Die Erfindung hat sich daher zur Aufgabe gestellt, ein Rotorblatt zu schaffen, das weniger zur Spaltbildung neigt.The object of the invention is therefore to create a rotor blade which is less prone to gap formation.
Erfindungsgemäß wird dieses Problem durch mit einem Rotorblatt mit den Merkmalen des Hauptancpruches gelöst. Die Unteransprüche geben bevorzugte Ausführungsformell der Erfindung wieder.According to the invention, this problem is solved by a rotor blade with the features of the main claim. The subclaims represent preferred embodiments of the invention.
Insbesondere wird vorgeschlagen, an den Halbschalen Ausnehmungen zur Aufnahme von Einpaßabschnitten, Kantenbereichen der anderen Halbschale oder separaten Profilen, vorzusehen. Diese Kantenbereiche können an einer gegenüberliegenden Halbschale realisiert werden, durch sogenannte Federkanten, oder durch Formschlusselemente an beiden Halbschalen, die ineinander passen, oder zur Aufnahme von separaten Federstrangprofilen dienen. Insbesondere wird vorgeschlagen, die Ausnehmungen mit trapezförmigem Querschnitt zu versehen, so dass in zwei einander gegenüberliegenden trapezförmigen Ausnehmungen ein sechseckiges Federstrangprofil einlegbar ist. Dabei werden rechtwinklige Ecken vermieden (also die unerwünschter punktueller Übertragung von Lasten an den Kanten). Dennoch wird durch gerade Seitenbereiche der definierten Kleberauftrag ermöglicht.In particular, it is proposed to provide 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. In particular, it is proposed to provide the recesses with a trapezoidal cross section, so that a hexagonal spring extrusion profile can be inserted in two mutually opposite trapezoidal recesses. 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.
Weiter wird vorgeschlagen, „T"-formige Feder- oder Strangprofile auf die Außenkanten aufzusetzen, bzw. bündig mit diesen in die Endbereiche des Klebespaltes der beiden Halbschalen einzulassen, um so den Klebspalt selbst vor den Witterungseinflüssen zu schützen.It is further proposed to place "T" -shaped spring or extruded profiles on the outer edges, or to let them flush with the end regions of the adhesive gap of the two half-shells in order to protect the adhesive gap itself from the weather.
Weitere Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausfuhrungsbeispieles anhand der beigefügten Zeichnung. Dabei zeigt:Further features and advantages result from the following description of a preferred exemplary embodiment with reference to the attached drawing. It shows:
Fig. 1 eine schematische Schilittdarstellung quer zum Rotorblatt durch eine Rotorblatt-Fügefläche,1 is a schematic Schilitt representation transverse to the rotor blade through a rotor blade joining surface,
Fig. 2 eine der Fig. 1 entsprechende Darstellung, bei der ein Federkern Verwendung findet,2 a representation corresponding to FIG. 1, in which a spring core is used,
Fig. 3 eine der Fig. 2 entsprechende Darstellung, bei der ein Federkern mit rundem Querschnitt, der also in Form eines langen Zylinders vorliegt, zum Einsatz kommt,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. 4 eine Rotorblatt-Fügefläche mit einem Kantenschutz, der zwischen die Halbschalen und vor die Vorderkante gesetzt ist,4 a rotor blade joining surface with an edge protector which is placed between the half-shells and in front of the front edge,
Fig. 5 eine der Fig. 4 entsprechende Darstellung, bei der eine weitere Einlaßnut für den Kantenschutz an der Vorderseite vorgesehen ist, so dass er bündig ist,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 eine Rotorblatt-Fügefläche an der Hinterkante eines Rotorblattes, Fig. 7 eine der Fig. 6 entsprechenden Darstellung mit einem spitz auslaufendem Federkernteil zwischen zwei als Nutteile ausgebildeten Rotorblatt-Halbschalenabschnitten.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.
Das in der Fig. 1 dargestellte Rotorblatt für Windenergieanlagen aus miteinander verbundenen Halbschalen weist zwei Halbschalenabschnitte an der Vorderseite auf, wobei die wenigstens eine der Halbschalen 12 Ausnehmungen 14 zur Aufnahme von Einpassabschnitten aufweist.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.
Vorteilhafterweise wird nicht nur, wie in der Fig. 1 dargestellt, an einer der Halbschalen eine entsprechenden Feder - dargestellt ist eine Trapezfeder, die in eine sich verjüngende Trapeznut einpasst - verwendet, sondern wie in Fig. 2 dargestellt, ein sechseckiger Federkern, der in zwei einander gegenüberliegende Trapeznuten einpasst. Dadurch werden rechteckige Winkel vermieden und stumpfe Winkel in der Klebefuge erlaubt.Advantageously, not only is a corresponding spring used on one of the half-shells, as shown in FIG. 1 - 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.
Es ist jedoch auch möglich, einen Rundfederkern zu verwenden, der in Form einer langen Stange mit zylindrischen Dimensionen in entsprechende Rundnuten einpasst. Diese Rundnuten sind jedoch vergleichsweise schwieriger in die Halbschalen der Rotorblätter einzuarbeiten als die Trapeznuten.However, it is also possible to use a round spring core that fits in the form of a long rod with cylindrical dimensions in corresponding round grooves. However, these round grooves are comparatively more difficult to work into the half-shells of the rotor blades than the trapezoidal grooves.
Weiter wird vorgeschlagen, zusätzlich zu den vorangehenden Maßnahmen und/oder als ausschließliche an der Vorderseite angeordnete Klebehilfe einen Kantenschutz vorzusehen, der in nicht mehr mittig im Rotorblattmantel angeordnete Nuten, sondern über bis zur Vorderkante offene Nuten einpasst und die Nutdimensionen mit Kantenabschnitten überlappt, um so insbesondere das Eindringen von Wasser in die Klebefuge zu vermeiden, aber auch mechanische Belastungen von der Klebefuge fern zu halten, die beispielsweise beim Auftreffen der Klebefuge auf härte Objekte auftreten können.Furthermore, it is proposed to provide 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.
Es muß dabei berücksichtigt werden, dass an den Außenbereichen die Flügel einer Windkraftanlage mit annähernd Schallgeschwindigkeit durch die Luft schneiden können.It must be taken into account that the wings of a wind turbine can cut through the air at approximately the speed of sound on the outer areas.
In der Fig. 5 wird eine weitere Variante dargestellt, bei der wiederum ein Strangpressprofil in einander symmetrisch vorgesehenen Nuten in die Mantelschalen einpasst, wobei neben einem T-förmigen Querschnitt der Feder- oder Strangprofile 22 zur Aufnahme dieser Strangprofile neben einem Längskantenbereich wenigstens der vorauslaufenden Rotorkante, die parallel zur Ausnehmung 14 verläuft, eine weitere zur Oberfläche parallele, längs zur Kante verlaufende Ausnehmung 16 an wenigstens einer Seite der Ausnehmung 14 zur Aufnahme wenigstens eines rechtwinklig sich erstreckenden Schenkels 24 des Federstrahlenprofils 22 vorgesehen ist.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.
Durch dieses „Einsenken" des Kantenschutzes werden die aerodynamischen Verhältnisse in besonders guter Weise gewahrt.This "sinking" of the edge protector maintains the aerodynamic conditions in a particularly good manner.
In den Fig. 6 und 7 sind die für die Druckkantenbereiche der Halbschalenprofile vorgesehenen analogen Maßnahmen schematisch anhand eines Federteils, das in einer Halbschale ausgebildet ist und in einen entsprechenden Nutabschnitt in der anderen Halb- schale eingreift (Fig. 6), und anhand eines im vorderen Bereich sechseckig beginnenden, zur Flügelhinterkante jedoch entsprechend der aerodynamischen Profilform spitz auslaufenden Federkernprofils dargestellt.6 and 7, the analogous measures provided for the pressure edge regions of the half-shell profiles are shown schematically on the basis of a spring part which is formed in one half-shell and engages in a corresponding groove section in the other half-shell (FIG. 6), and on the basis of an Front area starting hexagonal, but towards the wing trailing edge tapered according to the aerodynamic profile shape.
Ebenso wie bei den in Bezug auf Fig. 2 erläuterten Maßnahmen, bei denen je zwei miteinander ein Rotorblatt bildende Halbschalen entlang dem einander zu verklebenden kantennahen Bereiche mit durchgehenden Nuten 14 versehen sind, in die das entsprechende Federkernteil 26 einpasst, kann dies auch an der Flügelhinterkante realisiert werden. Just as with the measures explained with reference to FIG. 2, in which two half shells that form a rotor blade with one another are provided with continuous grooves 14 along the regions close to the edges to be glued, into which the corresponding spring core part 26 fits, this can also be done on the trailing edge of the wing will be realized.

Claims

PATENTANSPRÜCHE
1. Rotorblatt für Windenergieanlagen aus miteinander verbundenen Halbschalen (10, 12) dadurch gekennzeichnet, dass1. rotor blade for wind turbines from interconnected half-shells (10, 12), characterized in that
wenigstens eine der Halbschalen (10; 12) Ausnehmungen (14) zur Aufnahme von Einpaßabschnitten (18) aufweist.at least one of the half-shells (10; 12) has recesses (14) for receiving fitting sections (18).
2. Rotorblatt nach Anspruch 1, gekennzeichnet durch eine Ausbildung der Verbindungsflächen der miteinander ein Rotorblatt bildenden Halbschalen (10, 12) mit ineinanderpassenden Formschlußelementen (14, 18).2. Rotor blade according to claim 1, characterized by a formation of the connecting surfaces of the half shells (10, 12) forming a rotor blade with one another with interlocking positive locking elements (14, 18).
3. Rotorblatt nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß in je zwei miteinander ein Rotorblatt bildenden Halbschalen (10, 12) entlang der miteinander zu verklebenden beiden kantennahen Längsbereiche durchgehende Nuten (14) und entsprechend einpassende Federkanten (18) vorgesehen sind.3. Rotor blade according to one of the preceding claims, characterized in that continuous grooves (14) and correspondingly fitting spring edges (18) are provided in two half shells (10, 12) forming a rotor blade with one another along the two longitudinal regions that are to be glued together.
4. Rotorblatt nach Anspruch 1 , gekennzeichnet durch eine Ausbildung der Halbsclia- len (10, 12) mit wenigstens einer Nut und Vorsehung von in die Nut(en) (14) einpassenden separaten Federstrangprofilen (20).4. Rotor blade according to claim 1, characterized by an embodiment of the half clials (10, 12) with at least one groove and provision of separate spring extrusion profiles (20) fitting into the groove (s) (14).
5. Rotorblatt nach Anspruch 4, dadurch gekennzeichnet, daß die zwei gegenüberliegende Nuten längs verlaufende Ausnehmungen zwischen den Halbschalen (10, 12) bilden, die sechseckigen Querschnitt aufweisen und die Federstrangprofile entsprechend großen sechseckigen Querschnitt aufweisen. 5. Rotor blade according to claim 4, characterized in that the two opposite grooves form longitudinally extending recesses between the half-shells (10, 12), which have a hexagonal cross section and the spring extrusion profiles have a correspondingly large hexagonal cross section.
6. Rotorblatt nach einem der vorangehenden Ansprüche, gekennzeichnet durch an den Außenkanten der Halbschalen (10, 12) vorgesehene, die Kantenbereiche der Halbschalen (10, 12) außen überlappende Strangprofile (22).6. Rotor blade according to one of the preceding claims, characterized by extruded profiles (22) provided on the outer edges of the half-shells (10, 12) and overlapping the edge regions of the half-shells (10, 12).
7. Rotorblatt nach einem der vorangehenden Ansprüche, gekennzeichnet durch T- formigen Querschnitt der Feder- oder Strangprofile (22).7. Rotor blade according to one of the preceding claims, characterized by a T-shaped cross section of the spring or extruded profiles (22).
8. Rotorblatt nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die miteinander ein Rotorblatt bildenden Halbschalen (10, 12) zur Aufnahme von separaten Strangprofilen in wenigstens einem Längskantenbereich wenigstens der vorauslaufenden Rotorkante eine parallel zum Klebspalt verlaufende Ausnehmung (14) bilden und weiter eine zweite zur Oberfläche parallele längs der Kante verlaufende Ausnehmung (16) zur Aufnahme des wenigstens einen rechtwinklig sich zum Klebespalt erstreckenden Schenkels (24) des Federstrangprofils (20). 8. A rotor blade according to claim 6 or 7, characterized in that the half shells (10, 12) forming a rotor blade with one another for receiving separate extruded profiles in at least one longitudinal edge region of at least the leading rotor edge form a recess (14) running parallel to the adhesive gap and further one second recess (16) parallel to the surface and running along the edge for receiving the at least one leg (24) of the spring extrusion profile (20) extending at right angles to the adhesive gap.
EP04738860A 2003-07-07 2004-07-06 Rotor blade for wind turbines Withdrawn EP1642025A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10330733A DE10330733A1 (en) 2003-07-07 2003-07-07 Rotor blade for wind turbines
PCT/DE2004/001431 WO2005005825A1 (en) 2003-07-07 2004-07-06 Rotor blade for wind turbines

Publications (1)

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

Family

ID=34041672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738860A Withdrawn EP1642025A1 (en) 2003-07-07 2004-07-06 Rotor blade for wind turbines

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EP (1) EP1642025A1 (en)
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US7824592B2 (en) * 2006-09-22 2010-11-02 General Electric Company Bond line forming method
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