[go: up one dir, main page]

WO2003082551A1 - Blade connection for the rotor blades of a wind-energy turbine and a method for the production thereof - Google Patents

Blade connection for the rotor blades of a wind-energy turbine and a method for the production thereof Download PDF

Info

Publication number
WO2003082551A1
WO2003082551A1 PCT/DE2003/001023 DE0301023W WO03082551A1 WO 2003082551 A1 WO2003082551 A1 WO 2003082551A1 DE 0301023 W DE0301023 W DE 0301023W WO 03082551 A1 WO03082551 A1 WO 03082551A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
blade
hub
laminate layers
rotor blade
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.)
Ceased
Application number
PCT/DE2003/001023
Other languages
German (de)
French (fr)
Inventor
Richard Schmidt
Christian Weimer
Hubert Stadtfeld
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.)
Aerodyn Engineering GmbH
Original Assignee
Aerodyn Engineering 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 Aerodyn Engineering GmbH filed Critical Aerodyn Engineering GmbH
Priority to DE20320626U priority Critical patent/DE20320626U1/en
Priority to AU2003229497A priority patent/AU2003229497A1/en
Publication of WO2003082551A1 publication Critical patent/WO2003082551A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
    • 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
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
    • 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
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
    • 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
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • 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
    • 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 invention relates to a blade connection for the rotor blades of a wind turbine, in which the rotor blades or the hub are provided with at least one insert made of a solid material which is inserted into the root of the rotor blade or blades made of a fiber composite material and made of a plurality of laminate layers placed on top of one another or the hub is inserted and which is connected to the hub or the rotor blade of the wind turbine via bolts screwed into threaded bores in the inserts.
  • the energy generated by a wind turbine is based on the conversion of the translational air movement energy into rotary energy, which takes place via rotor blades.
  • the rotor blades of the wind turbine are connected to a rotor hub at their root end, either directly or via a blade bearing arranged between the rotor blade and the rotor hub.
  • the rotor hub and rotor blades together form the rotor.
  • the invention has for its object to provide a blade connection that allows transmission of high tensile and compressive forces.
  • this object is achieved in that the at least one insert is conical in cross section, the peripheral surface of the at least one insert with a A plurality of elevations and / or recesses is provided, the laminate layers extending parallel to the insert are formed in the region of the insert with a profile complementary to the profile of the at least one insert and the laminate layers are sewn together in the region of the insert perpendicular to their extension.
  • the insert can be designed in the form of a ring, but it is also possible to provide two half-ring-shaped inserts or a plurality of ring-segment-shaped inserts designed as ring-part-shaped with radial side walls
  • the method according to the invention for producing the blade connection of a wind power installation is characterized by sewing the still impregnated, superimposed fiber fabrics in the area of the at least one insert perpendicular to their extension, inserting the at least one insert into the space left free by the sewn fiber fabrics and Infuse or inject a resin into the scrim to form the laminate layers.
  • FIG 1 shows an insert in cross section, this on one side showing the structure of the sewn laminate layers (not shown on the other side),
  • Fig. 2 shows a first detailed view from Fig. 1 and
  • FIG. 3 shows a second detailed illustration from FIG. 1.
  • the basic structure of the insert 1, which is preferably metallic, is conical. Its peripheral surface is provided with a plurality of elevations and recesses 2.
  • the insert 1 is embedded in a laminate structure 3 provided from a fiber plastic composite.
  • This laminate structure is provided with different seams in the area of the insert 1, namely with an assembly and positioning seam 4, which allows improved force guidance in the laminate structure 3.
  • An ILS seam increases the interlaminar shear strength of the laminate layers.
  • a final assembly seam 6 serves to protect against Delaminations of the fiber plastic composite in the area of the internal thread 7, which is introduced in the center of the insert 1.
  • An additionally introduced fiber reinforcement material 8 forms the positive connection with the elevations and recesses 2 in the laminate structure.
  • the insert 1 can be designed as a full ring with an inwardly tapering cross-section, but it is also possible to make it semi-ring-shaped or to provide a plurality of ring segment-shaped inserts.
  • a third possibility is to provide a large number of individual inserts which are inserted into the preformed profile of the preform of the rotor blade or the hub and then produce the positive connection by injecting or infusing the resin.
  • the conical design of the inserts makes it easier to insert them into the non-impregnated but already sewn fiber fabrics, and on the other hand it prevents force jumps between the insert and the laminate.

Landscapes

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

Abstract

The invention relates to a blade connection between the rotor blades and the hub of a wind-energy turbine. In said connection, the rotor blades and/or the hub are provided with at least one insert consisting of a strong material, which is introduced into the root of the rotor blade and into the flange of the hub of the rotor blade, the latter consisting of several laminate layers that have been bonded together, and which is connected to the hub and the rotor blade of the wind-energy turbine by bolts that are screwed into threaded bores in said inserts. According to the invention: the insert or inserts is/are configured with a conical cross-section; the peripheral surface of the insert or inserts is provided with a plurality of elevations and/or recesses: the laminate layers extending parallel to the insert are configured in the vicinity of the insert with a profile that complements the profile of the insert(s); and the cluster of fibres in the vicinity of the insert is sewn together perpendicular to their extension. The invention also relates to a method for producing said connection.

Description

Blattanschluss für die Rotorblätter einer Windenergieanlage und Verfahren zu dessen Herstellung Blade connection for the rotor blades of a wind turbine and method for its production

Die Erfindung betrifft einen Blattanschluss für die Rotorblätter einer Windenergieanlage, bei der die Rotorblätter bzw. die Nabe mit wenigstens einem Insert aus einem festen Material versehen sind, das in die Wurzel des bzw. der aus einem Faserverbundwerkstoff gefertigten, aus mehreren aufeinander gelegten Laminatschichten gefertigten Rotorblatts bzw. der Nabe eingesetzt ist und das mit der Nabe bzw. dem Rotorblatt der Windenergieanlage über in Gewindebohrungen in den Inserts eingeschraubte Bolzen verbunden ist.The invention relates to a blade connection for the rotor blades of a wind turbine, in which the rotor blades or the hub are provided with at least one insert made of a solid material which is inserted into the root of the rotor blade or blades made of a fiber composite material and made of a plurality of laminate layers placed on top of one another or the hub is inserted and which is connected to the hub or the rotor blade of the wind turbine via bolts screwed into threaded bores in the inserts.

Die Energieerzeugung durch eine Windenergieanlage beruht auf der Wandlung der translatorischen Luftbewegungsenergie in rotatorische Energie, die über Rotorblätter erfolgt. Die Rotorblätter der Windenergieanlage sind an ihrem Wurzelende mit einer Rotornabe verbunden, und zwar wahlweise direkt oder über ein zwischen Rotorblatt und Rotornabe angeordnetes Blattlager. Rotornabe und Rotorblätter bilden gemeinsam den Rotor.The energy generated by a wind turbine is based on the conversion of the translational air movement energy into rotary energy, which takes place via rotor blades. The rotor blades of the wind turbine are connected to a rotor hub at their root end, either directly or via a blade bearing arranged between the rotor blade and the rotor hub. The rotor hub and rotor blades together form the rotor.

Bei dieser Wandlung der translatorischen Luftbewegungsenergie in Rotationsenergie entstehen an der Verbindung zwischen dem Rotorblatt und der Rotornabe, dem sogenannten Blattanschluss, große statische und dynamische Biegemomente, die damit verbundenen Zug- und Druckkräfte müssen von dem Blattanschluss übertragen werden.With this conversion of translational air kinetic energy into rotational energy, large static and dynamic bending moments arise at the connection between the rotor blade and the rotor hub, the so-called blade connection, and the associated tensile and compressive forces must be transmitted from the blade connection.

Es ist bereits bekannt, in den Laminataufbau der Blattwurzel Inserts einzukleben, die aus einem Metall oder aber einem anderen festen Material gefertigt sind. Dabei stellt sich das Problem, dass bei derart eingeklebten Inserts die Kräfte nur über die Nerklebungsfläche übertragen werden, die Oberfläche der Inserts muss daher groß dimensioniert sein.It is already known to insert inserts into the laminate structure of the leaf root, which are made of a metal or another solid material. The problem arises that in the case of inserts glued in in this way, the forces are only transmitted via the adhesive surface, and the surface of the inserts must therefore be large.

Der Erfindung liegt die Aufgabe zugrunde, einen Blattanschluss zu schaffen, die eine Übertragung auch hoher Zug- und Druckkräfte erlaubt.The invention has for its object to provide a blade connection that allows transmission of high tensile and compressive forces.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass das wenigstens eine Insert im Querschnitt konisch ausgebildet ist, die Umfangsflache des wenigstens einen Inserts mit einer Mehrzahl von Erhöhungen und/oder Aussparungen versehen ist, die sich parallel zu dem Insert erstreckenden Laminatschichten im Bereich des Inserts mit einem zu dem Profil des wenigstens einen Inserts komplementären Profil ausgebildet sind und die Laminatschichten im Bereich des Inserts senkrecht zu ihrer Erstreckung miteinander vernäht sind.According to the invention, this object is achieved in that the at least one insert is conical in cross section, the peripheral surface of the at least one insert with a A plurality of elevations and / or recesses is provided, the laminate layers extending parallel to the insert are formed in the region of the insert with a profile complementary to the profile of the at least one insert and the laminate layers are sewn together in the region of the insert perpendicular to their extension.

Das Insert kann voUringformig ausgebildet sein, es können aber auch zwei halbringfbrmig ausgebildete Inserts oder aber eine Vielzahl von ringsegmentförmigen, als ringteilförmig mit radialen Seitenwänden ausgebildeten Inserts vorgesehen seinThe insert can be designed in the form of a ring, but it is also possible to provide two half-ring-shaped inserts or a plurality of ring-segment-shaped inserts designed as ring-part-shaped with radial side walls

Das erfindungsgemäße Verfahren zum Herstellen des Blattanschlusses einer Windenergieanlage nach einem der vorangehenden Ansprüche ist gekennzeichnet durch Vernähen der noch ungetränkten, aufeinander liegenden Fasergelege im Bereich des wenigstens einen Inserts senkrecht zu ihrer Erstreckung, Einsetzen des wenigstens einen Inserts in den durch die vernähten Fasergelege freigelassen Raum und Infundieren oder Injizieren eines Harzes in die Fasergelege unter Bildung der Laminatschichten.The method according to the invention for producing the blade connection of a wind power installation according to one of the preceding claims is characterized by sewing the still impregnated, superimposed fiber fabrics in the area of the at least one insert perpendicular to their extension, inserting the at least one insert into the space left free by the sewn fiber fabrics and Infuse or inject a resin into the scrim to form the laminate layers.

Die Erfindung wird im Folgenden anhand einer Zeichnung erläutert. Dabei zeigt:The invention is explained below with reference to a drawing. It shows:

Fig. 1 ein Insert im Querschnitt, wobei dieses auf der einen Seite den (auf der anderen Seite nicht dargestellten) Aufbau der vernähten Laminatschichten wiedergibt,1 shows an insert in cross section, this on one side showing the structure of the sewn laminate layers (not shown on the other side),

Fig. 2 eine erste Detaildarstellung aus Fig. 1 undFig. 2 shows a first detailed view from Fig. 1 and

Fig. 3 eine zweite Detaildarstellung aus Fig. 1.3 shows a second detailed illustration from FIG. 1.

Das - vorzugsweise metallische - Insert 1 ist in seiner Grundstruktur konisch. Seine Umfangsflache ist mit einer Mehrzahl von Erhöhungen und Aussparungen 2 versehen. Das Insert 1 ist in einen aus einem Faserkunststoffverbund versehenen Laminataufbau 3 eingebettet. Dieser Laminataufbau ist im Bereich des Inserts 1 mit unterschiedlichen Nähten versehen, nämlich mit einer Montage- und Positionierungsnaht 4, die eine verbesserte Kraftanleitung in den Laminataufbau 3 erlaubt. Eine ILS-Naht erhöht die interlaminare Scherfestigkeit der Laminatschichten. Eine Endmontagenaht 6 dient zum Schutz vor Delaminationen des Faserkunststoffverbundes im Bereich des Innengewindes 7, das mittig in das Insert 1 eingebracht ist.The basic structure of the insert 1, which is preferably metallic, is conical. Its peripheral surface is provided with a plurality of elevations and recesses 2. The insert 1 is embedded in a laminate structure 3 provided from a fiber plastic composite. This laminate structure is provided with different seams in the area of the insert 1, namely with an assembly and positioning seam 4, which allows improved force guidance in the laminate structure 3. An ILS seam increases the interlaminar shear strength of the laminate layers. A final assembly seam 6 serves to protect against Delaminations of the fiber plastic composite in the area of the internal thread 7, which is introduced in the center of the insert 1.

Ein zusätzlich eingebrachtes Faserverstärkungsmaterial 8 bildet den Formschluß mit den Erhöhungen und Aussparungen 2 in dem Laminataufbau.An additionally introduced fiber reinforcement material 8 forms the positive connection with the elevations and recesses 2 in the laminate structure.

Das Insert 1 kann als Vollring mit sich nach innen verjüngendem Querschnitt ausgebildet sein, es ist jedoch auch möglich, diesen halbringförmig auszubilden oder aber eine Vielzahl von ringsegmentförmigen Inserts vorzusehen.The insert 1 can be designed as a full ring with an inwardly tapering cross-section, but it is also possible to make it semi-ring-shaped or to provide a plurality of ring segment-shaped inserts.

Es ist möglich - ohne dass die Erfindung darauf beschränkt wäre - einen noch ungetränkten Vorformling zunächst unter geeignetem Vernähen der Fasergelege zu fertigen, das Insert einzusetzen und sodann das Harz zu infundieren oder zu injizieren, wodurch der Formschluß zwischen den Laminatschichten und dem Profil des Inserts hergestellt wird.It is possible - without the invention being restricted to this - to first produce an as yet impregnated preform with suitable stitching of the fiber fabric, to insert the insert and then to infuse or inject the resin, thereby producing the positive connection between the laminate layers and the profile of the insert becomes.

Es ist jedoch auch möglich, in - an sich bekannter Weise - die Hälften des Rotorblattes in einer Halbschale herzustellen, die Laminatschichten der Blattwurzel mit einer im Bereich des Inserts diesem komplementär entsprechenden Profil auszugestalten, dashalbringförmige Insert sodann einzusetzen und anschließend die beiden Hälften des Rotorblatts aufeinander zu legen.However, it is also possible, in a manner known per se, to produce the halves of the rotor blade in a half-shell, to design the laminate layers of the blade root with a profile that complements this in the region of the insert, then to insert the half-ring-shaped insert and then to place the two halves of the rotor blade on top of one another to lay.

Eine dritte Möglichkeit besteht darin, eine Vielzahl von einzelnen Inserts vorzusehen, die in das vorgeformte Profil des Vorformlings des Rotorblatts bzw. der Nabe eingesetzt werden und den Formschluß sodann durch Injizieren oder Infundieren des Harzes herzustellen.A third possibility is to provide a large number of individual inserts which are inserted into the preformed profile of the preform of the rotor blade or the hub and then produce the positive connection by injecting or infusing the resin.

Die konische Ausbildung der Inserts erleichtert zum einen das Einbringen in die noch ungetränkten, aber bereits miteinander vernähten Fasergelege, es bewirkt zum anderen, dass Kraftsprünge zwischen dem Insert und dem Laminat vermieden werden. The conical design of the inserts on the one hand makes it easier to insert them into the non-impregnated but already sewn fiber fabrics, and on the other hand it prevents force jumps between the insert and the laminate.

Claims

Ansprüche Expectations 1. Blattanschluss zwischen den Rotorblättern und der Nabe einer Windenergieanlage, bei der die Rotorblätter und/oder die Nabe mit wenigstens einem Insert aus einem festen Material versehen sind, das in die Wurzel des Rotorblatts bzw. in die Flansche der Nabe des bzw. der aus einem Faserverbundwerkstoff gefertigten, aus mehreren aufeinander gelegten Laminatschichten bestehenden Rotorblatts bzw. Nabe eingesetzt ist und das mit der Nabe bzw. dem Rotorblatt der Windenergieanlage über in Gewindebohrungen in den Inserts eingeschraubte Bolzen verbunden ist, dadurch gekennzeichnet, dass1. Blade connection between the rotor blades and the hub of a wind turbine, in which the rotor blades and / or the hub are provided with at least one insert made of a solid material, which in the root of the rotor blade or in the flanges of the hub or the a fiber composite material made of several superimposed laminate layers existing rotor blade or hub is used and which is connected to the hub or the rotor blade of the wind turbine via bolts screwed into threaded holes in the inserts, characterized in that - das wenigstens eine Insert im Querschnitt konisch ausgebildet ist,the at least one insert is conical in cross section, die Umfangsflache des wenigstens einen Inserts mit einer Mehrzahl von Erhöhungen und/oder Aussparungen versehen ist,the peripheral surface of the at least one insert is provided with a plurality of elevations and / or recesses, die sich parallel zu dem Insert erstreckenden Laminatschichten im Bereich des Inserts mit einem zu dem Profil des wenigstens einen Inserts komplementären Profil ausgebildet sind undthe laminate layers extending parallel to the insert are formed in the region of the insert with a profile complementary to the profile of the at least one insert and die Laminatschichten im Bereich des Inserts senkrecht zu ihrer Erstreckung miteinander vernäht sind.the laminate layers are sewn together in the area of the insert perpendicular to their extension. 2. Blattanschluss nach Anspruch 1, dadurch gekennzeichnet, dass ein vollringförmig ausgebildetes Insert vorgesehen ist.2. Blade connector according to claim 1, characterized in that a fully annular insert is provided. 3. Blattanschluss nach Anspruch 1, dadurch gekennzeichnet, dass zwei halbringformig ausgebildete Inserts vorgesehen sind.3. Blade connection according to claim 1, characterized in that two half-ring-shaped inserts are provided. 4. Blattanschluss nach Anspruch 1, dadurch gekennzeichnet, dass eine Vielzahl von ring- segmentförmigen Inserts vorgesehen sind. 4. Blade connection according to claim 1, characterized in that a plurality of ring-segment-shaped inserts are provided. 5. Verfahren zum Herstellen des Blattanschlusses einer Windenergieanlage nach einem der vorangehenden Ansprüche, gekennzeichnet durch5. A method for producing the blade connection of a wind turbine according to one of the preceding claims, characterized by Vernähen der noch ungetränkten, aufeinander liegenden Fasergelege im Bereich des wenigstens einen Inserts senkrecht zu ihrer Erstreckung,Sewing the still impregnated, laid-up fiber fabrics in the area of the at least one insert perpendicular to their extension, Einsetzen des wenigstens einen Inserts in den durch die vernähten Fasergelege freigelassen Raum undInserting the at least one insert into the space left free by the stitched fiber fabric and Infundieren oder Injizieren eines Harzes in die Fasergelege unter Bildung der Laminatschichten.Infuse or inject a resin into the scrim to form the laminate layers. 6. Verfahren zum Herstellen eines Blattanschlusses nach Anspruch 3, gekennzeichnet durch6. A method for producing a sheet connection according to claim 3, characterized by Einlegen des halbringförmigen Inserts in die eine in einer Halbschale geformte Hälfte des Rotorblatts undInsert the half-ring-shaped insert into one half of the rotor blade, which is formed in a half shell Auflegen der zweiten in einer zweiten Halb schale geformten Hälfte des Rotorblatts auf die erste Hälfte unter Einschluss des Inserts.Place the second half of the rotor blade shaped in a second half shell on the first half, including the insert. 7. Verfahren zum Herstellen des Blattanschlusses einer Windenergieanlage nach einem der vorangehenden Ansprüche, gekennzeichnet durch7. A method for producing the blade connection of a wind turbine according to one of the preceding claims, characterized by Vernähen der vorimprägnierten, aufeinander liegenden Fasergelege (Pre-Pregs) im Bereich des wenigstens einen Inserts senkrecht zu ihrer Erstreckung,Sewing the pre-impregnated, superimposed fiber fabrics (pre-pregs) in the area of the at least one insert perpendicular to their extension, Einsetzen des wenigstens einen Inserts in den durch die vernähten Pre-Pregs freigelassen Raum undInserting the at least one insert into the space and left free by the sewn pre-pregs Aktivieren der Pre-Pregs unter Bildung der Laminatschichten. Activate the pre-pregs to form the laminate layers.
PCT/DE2003/001023 2002-03-28 2003-03-27 Blade connection for the rotor blades of a wind-energy turbine and a method for the production thereof Ceased WO2003082551A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE20320626U DE20320626U1 (en) 2002-03-28 2003-03-27 Blade connection for the rotor blades of a wind energy plant
AU2003229497A AU2003229497A1 (en) 2002-03-28 2003-03-27 Blade connection for the rotor blades of a wind-energy turbine and a method for the production thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10214340.4 2002-03-28
DE10214340A DE10214340C1 (en) 2002-03-28 2002-03-28 Blade connection for the rotor blades of a wind turbine and method for its production

Publications (1)

Publication Number Publication Date
WO2003082551A1 true WO2003082551A1 (en) 2003-10-09

Family

ID=28458491

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/001023 Ceased WO2003082551A1 (en) 2002-03-28 2003-03-27 Blade connection for the rotor blades of a wind-energy turbine and a method for the production thereof

Country Status (3)

Country Link
AU (1) AU2003229497A1 (en)
DE (2) DE10214340C1 (en)
WO (1) WO2003082551A1 (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2863318A1 (en) * 2003-12-09 2005-06-10 Ocea Sa Wind generator for power plant, has offset unit offsetting leading edge such that main axis extended between center of root base of blades and opposite ends of blades does not pass through rotational axis of hub
FR2863321A1 (en) * 2003-12-09 2005-06-10 Ocea Sa Wind generator`s blade for producing electricity, has at one of its ends cylindrical root to be fixed with hub of wind generator by screwing units cooperating with threaded bores carried by root
WO2006070171A1 (en) * 2004-12-29 2006-07-06 Vestas Wind Systems A/S Method of manufacturing a wind turbine blade shell member with a fastening member and a wind turbine blade with a fastening member
EP2078851A1 (en) 2008-01-14 2009-07-15 Lm Glasfiber A/S Wind turbine blade and hub assembly
GB2465167A (en) * 2008-11-07 2010-05-12 Vestas Wind Sys As A turbine blade having mounting inserts of different lengths
US8066490B2 (en) 2009-12-21 2011-11-29 General Electric Company Wind turbine rotor blade
US8133029B2 (en) 2006-05-11 2012-03-13 Repower Systems Ag Rotor blade attachment
US20130285284A1 (en) * 2011-01-21 2013-10-31 Hexcel Corporation Module for holding at least one bushing
CN103552256A (en) * 2013-10-25 2014-02-05 中航复合材料有限责任公司 Autoclave integrated-forming method for composite double-surface-ribbed wallboard
DE102012111219A1 (en) 2012-11-21 2014-05-22 Spitzner Engineers GmbH Wind turbine component
WO2015130162A1 (en) 2014-02-25 2015-09-03 Viventus Holding B.V. Bushing intended for connecting a blade root of a wind turbine blade directly or indirectly to a hub of a turbine
US9464622B2 (en) 2013-05-31 2016-10-11 General Electric Company Rotor blade assembly having a stiffening root insert
US9745956B2 (en) 2014-12-10 2017-08-29 General Electric Company Spar cap for a wind turbine rotor blade
RU2641927C2 (en) * 2012-12-05 2018-01-23 Снекма Method for production of turbomachnine blade tang made of composite and blade root made by method
US9897065B2 (en) 2015-06-29 2018-02-20 General Electric Company Modular wind turbine rotor blades and methods of assembling same
US9957953B2 (en) 2014-06-05 2018-05-01 Siemens Aktiengesellschaft Root bushing for a blade root of a wind turbine rotor blade, a blade root, a wind turbine rotor blade and a wind turbine
US9970304B2 (en) 2015-07-22 2018-05-15 General Electric Company Rotor blade root assembly for a wind turbine
US10060411B2 (en) 2015-07-22 2018-08-28 General Electric Company Rotor blade root assembly for a wind turbine
US10072632B2 (en) 2015-06-30 2018-09-11 General Electric Company Spar cap for a wind turbine rotor blade formed from pre-cured laminate plates of varying thicknesses
US10077758B2 (en) 2015-06-30 2018-09-18 General Electric Company Corrugated pre-cured laminate plates for use within wind turbine rotor blades
US10113532B2 (en) 2015-10-23 2018-10-30 General Electric Company Pre-cured composites for rotor blade components
US10190571B2 (en) 2015-07-01 2019-01-29 General Electric Company Ring insert for a wind turbine rotor blade
US10337490B2 (en) 2015-06-29 2019-07-02 General Electric Company Structural component for a modular rotor blade
US10422316B2 (en) 2016-08-30 2019-09-24 General Electric Company Pre-cured rotor blade components having areas of variable stiffness
US10626847B2 (en) 2017-01-05 2020-04-21 General Electric Company Method for manufacturing a wind turbine rotor blade root section with pultruded rods and associated wind turbine blade
US10677216B2 (en) 2017-10-24 2020-06-09 General Electric Company Wind turbine rotor blade components formed using pultruded rods
GB2583540A (en) * 2019-05-03 2020-11-04 Lentus Composites Ltd Connector
CN112238621A (en) * 2020-09-18 2021-01-19 常州市新创智能科技有限公司 Combined wind power blade root prefabricated part
EP3788256B1 (en) 2018-04-30 2022-12-07 Vestas Wind Systems A/S A rotor for a wind turbine with a pitch bearing unit
US11530679B2 (en) 2017-12-08 2022-12-20 Vestas Wind Systems A/S Insert for a wind turbine blade root
US11738530B2 (en) 2018-03-22 2023-08-29 General Electric Company Methods for manufacturing wind turbine rotor blade components
US12365120B2 (en) 2019-07-16 2025-07-22 Ge Infrastructure Technology Llc System and method for manufacturing panels for use in wind turbine rotor blade components
US12377617B2 (en) 2019-07-16 2025-08-05 Ge Vernova Infrastructure Technology Llc System and method for manufacturing panels for use in wind turbine rotor blade components

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2265760B1 (en) * 2005-03-31 2008-01-16 GAMESA INNOVATION & TECHNOLOGY, S.L. SHOVEL FOR WIND GENERATORS.
DE102006014742B4 (en) * 2006-03-30 2008-01-24 Nordex Energy Gmbh Rotor blade for wind turbines
DE102007025556B4 (en) * 2007-05-31 2010-06-17 Eurocopter Deutschland Gmbh Process for the production of components from fiber reinforced plastics
ITTO20070666A1 (en) * 2007-09-24 2009-03-25 Blue H Intellectual Properties OFFSHORE WIND POWER CONVERSION SYSTEM FOR DEEP WATER
GB0818467D0 (en) 2008-10-08 2008-11-12 Blade Dynamics Ltd An insert for forming an end connection in a uni-axial composite material
DE102010010283A1 (en) 2010-03-04 2011-09-08 Deutsches Zentrum für Luft- und Raumfahrt e.V. Rotor hub in fiber composite construction for wind turbines
DE102010017062B4 (en) * 2010-05-21 2019-07-11 Thyssenkrupp Steel Europe Ag Rotor blade of a wind turbine
DE102014215390B3 (en) * 2014-08-05 2015-11-05 Bayerische Motoren Werke Aktiengesellschaft Arrangement with a metallic connection element and a fiber composite material
DE102014221966B4 (en) 2014-10-28 2018-07-12 Senvion Gmbh Method for producing a rotor blade of a wind energy plant
DE102015007977A1 (en) * 2015-06-23 2016-12-29 Senvion Gmbh Rotor blade connection with steel laminate bonding
US10107257B2 (en) 2015-09-23 2018-10-23 General Electric Company Wind turbine rotor blade components formed from pultruded hybrid-resin fiber-reinforced composites
DE102016000703B4 (en) * 2016-01-18 2019-10-02 Audi Ag Method and device for producing a fiber-reinforced plastic composite profile with integrated load introduction elements
EP4245985A1 (en) * 2022-03-14 2023-09-20 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Root bushing, wind turbine rotor blade and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260332A (en) * 1979-03-22 1981-04-07 Structural Composite Industries, Inc. Composite spar structure having integral fitting for rotational hub mounting
US4915590A (en) * 1987-08-24 1990-04-10 Fayette Manufacturing Corporation Wind turbine blade attachment methods
US5308228A (en) * 1991-12-04 1994-05-03 Societe Nationale d'Etude et de Construction de Moteurs d`Aviation "S.N.E.C.M.A." Gas turbine blade comprising layers of composite material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139523C2 (en) * 1991-11-30 1995-09-21 Dornier Luftfahrt Process for the production of fiber composite components
DE4335221C1 (en) * 1993-10-15 1995-03-16 Deutsche Forsch Luft Raumfahrt Rotor blade for wind power systems
DE19529476C2 (en) * 1995-08-11 2000-08-10 Deutsch Zentr Luft & Raumfahrt Wing with shear-resistant wing shells made of fiber composite materials for aircraft
DE19534627A1 (en) * 1995-09-18 1997-03-20 Richard Pott Light, strong multi-layer unidirectional laminate for aerospace etc.
DE19834772C2 (en) * 1998-08-01 2002-10-17 Inst Verbundwerkstoffe Gmbh Fiber-plastic composite components with inserts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260332A (en) * 1979-03-22 1981-04-07 Structural Composite Industries, Inc. Composite spar structure having integral fitting for rotational hub mounting
US4915590A (en) * 1987-08-24 1990-04-10 Fayette Manufacturing Corporation Wind turbine blade attachment methods
US5308228A (en) * 1991-12-04 1994-05-03 Societe Nationale d'Etude et de Construction de Moteurs d`Aviation "S.N.E.C.M.A." Gas turbine blade comprising layers of composite material

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
H. BENSON DEXTER: "Development of Textile Reinforced Composites for Aircraft Structures", 14 October 1998, NASA LANGLEY RESEARCH CENTRE, KYOTO, XP002246969 *
HAU ERICH: "WINDKRAFTANLAGEN", WINDKRAFTANLAGEN. GRUNDLAGEN, TECHNIK, EINSATZ, WIRTSCHAFTLICHKEIT, BERLIN: SPRINGER, DE, 1996, pages 186 - 213, XP002143305, ISBN: 3-540-57430-1 *
INSTITUT FÜR VERBUNDWERKSTOFFE GMBH: "Prozessentwicklung und ganzheitliches Leichtbaukonzept zur abfallfreien, durchgängigen Preform-RTM-Fertigung", 15 March 2002, FORSCHUNGZENTRUM KARLSRUHE, KARLSRUHE, XP002246968 *
WEIMER C ET AL: "Approach to net-shape preforming using textile technologies. Part II: holes", COMPOSITES PART A: APPLIED SCIENCE AND MANUFACTURING, ELSEVIER SCIENCE PUBLISHERS B.V., AMSTERDAM, NL, VOL. 31, NR. 11, PAGE(S) 1269-1277, ISSN: 1359-835X, XP004208344 *
WEIMER C ET AL: "Aspects of the stitch formation process on the quality of sewn multi-textile-preforms", COMPOSITES PART A: APPLIED SCIENCE AND MANUFACTURING, ELSEVIER SCIENCE PUBLISHERS B.V., AMSTERDAM, NL, VOL. 32, NR. 10, PAGE(S) 1477-1484, ISSN: 1359-835X, XP004299915 *

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2863321A1 (en) * 2003-12-09 2005-06-10 Ocea Sa Wind generator`s blade for producing electricity, has at one of its ends cylindrical root to be fixed with hub of wind generator by screwing units cooperating with threaded bores carried by root
FR2863318A1 (en) * 2003-12-09 2005-06-10 Ocea Sa Wind generator for power plant, has offset unit offsetting leading edge such that main axis extended between center of root base of blades and opposite ends of blades does not pass through rotational axis of hub
WO2006070171A1 (en) * 2004-12-29 2006-07-06 Vestas Wind Systems A/S Method of manufacturing a wind turbine blade shell member with a fastening member and a wind turbine blade with a fastening member
AU2004326123B2 (en) * 2004-12-29 2009-04-23 Vestas Wind Systems A/S Method of manufacturing a wind turbine blade shell member with a fastening member and a wind turbine blade with a fastening member
US8172538B2 (en) 2004-12-29 2012-05-08 Vestas Wind Systems A/S Method of manufacturing a wind turbine blade shell member with a fastening member and a wind turbine blade with a fastening member
US8133029B2 (en) 2006-05-11 2012-03-13 Repower Systems Ag Rotor blade attachment
US8408875B2 (en) 2006-05-11 2013-04-02 Repower Systems Se Rotor blade attachment
EP2078851A1 (en) 2008-01-14 2009-07-15 Lm Glasfiber A/S Wind turbine blade and hub assembly
WO2009089833A2 (en) 2008-01-14 2009-07-23 Lm Glasfiber A/S Wind turbine blade and hub assembly
GB2465167A (en) * 2008-11-07 2010-05-12 Vestas Wind Sys As A turbine blade having mounting inserts of different lengths
US8105040B2 (en) 2008-11-07 2012-01-31 Vestas Wind Systems A/S Wind turbine rotor blade
WO2010052487A3 (en) * 2008-11-07 2010-10-21 Vestas Wind Systems A/C Wind turbine rotor blade
CN102209846B (en) * 2008-11-07 2013-12-11 维斯塔斯风力系统集团公司 Wind turbine rotor blade
US8066490B2 (en) 2009-12-21 2011-11-29 General Electric Company Wind turbine rotor blade
US20130285284A1 (en) * 2011-01-21 2013-10-31 Hexcel Corporation Module for holding at least one bushing
US9370905B2 (en) * 2011-01-21 2016-06-21 Hexcel Holding Gmbh Module for holding at least one bushing
DE102012111219A1 (en) 2012-11-21 2014-05-22 Spitzner Engineers GmbH Wind turbine component
EP2735732A2 (en) 2012-11-21 2014-05-28 Spitzner Engineers GmbH Wind energy plant component
DE102012111219B4 (en) * 2012-11-21 2016-06-16 Spitzner Engineers GmbH Wind turbine component
RU2641927C2 (en) * 2012-12-05 2018-01-23 Снекма Method for production of turbomachnine blade tang made of composite and blade root made by method
US9464622B2 (en) 2013-05-31 2016-10-11 General Electric Company Rotor blade assembly having a stiffening root insert
CN103552256A (en) * 2013-10-25 2014-02-05 中航复合材料有限责任公司 Autoclave integrated-forming method for composite double-surface-ribbed wallboard
WO2015130162A1 (en) 2014-02-25 2015-09-03 Viventus Holding B.V. Bushing intended for connecting a blade root of a wind turbine blade directly or indirectly to a hub of a turbine
US9957953B2 (en) 2014-06-05 2018-05-01 Siemens Aktiengesellschaft Root bushing for a blade root of a wind turbine rotor blade, a blade root, a wind turbine rotor blade and a wind turbine
US9745956B2 (en) 2014-12-10 2017-08-29 General Electric Company Spar cap for a wind turbine rotor blade
US9897065B2 (en) 2015-06-29 2018-02-20 General Electric Company Modular wind turbine rotor blades and methods of assembling same
US10337490B2 (en) 2015-06-29 2019-07-02 General Electric Company Structural component for a modular rotor blade
US10072632B2 (en) 2015-06-30 2018-09-11 General Electric Company Spar cap for a wind turbine rotor blade formed from pre-cured laminate plates of varying thicknesses
US10077758B2 (en) 2015-06-30 2018-09-18 General Electric Company Corrugated pre-cured laminate plates for use within wind turbine rotor blades
US10190571B2 (en) 2015-07-01 2019-01-29 General Electric Company Ring insert for a wind turbine rotor blade
US9970304B2 (en) 2015-07-22 2018-05-15 General Electric Company Rotor blade root assembly for a wind turbine
US10060411B2 (en) 2015-07-22 2018-08-28 General Electric Company Rotor blade root assembly for a wind turbine
US10113532B2 (en) 2015-10-23 2018-10-30 General Electric Company Pre-cured composites for rotor blade components
US10422316B2 (en) 2016-08-30 2019-09-24 General Electric Company Pre-cured rotor blade components having areas of variable stiffness
US10626847B2 (en) 2017-01-05 2020-04-21 General Electric Company Method for manufacturing a wind turbine rotor blade root section with pultruded rods and associated wind turbine blade
US10677216B2 (en) 2017-10-24 2020-06-09 General Electric Company Wind turbine rotor blade components formed using pultruded rods
US11530679B2 (en) 2017-12-08 2022-12-20 Vestas Wind Systems A/S Insert for a wind turbine blade root
US12085054B2 (en) 2017-12-08 2024-09-10 Vestas Wind Systems A/S Insert for a wind turbine blade root
US11738530B2 (en) 2018-03-22 2023-08-29 General Electric Company Methods for manufacturing wind turbine rotor blade components
EP3788256B1 (en) 2018-04-30 2022-12-07 Vestas Wind Systems A/S A rotor for a wind turbine with a pitch bearing unit
US12025091B2 (en) 2018-04-30 2024-07-02 Vestas Wind Systems A/S Rotor for a wind turbine with a pitch bearing unit
GB2583540A (en) * 2019-05-03 2020-11-04 Lentus Composites Ltd Connector
US12365120B2 (en) 2019-07-16 2025-07-22 Ge Infrastructure Technology Llc System and method for manufacturing panels for use in wind turbine rotor blade components
US12377617B2 (en) 2019-07-16 2025-08-05 Ge Vernova Infrastructure Technology Llc System and method for manufacturing panels for use in wind turbine rotor blade components
CN112238621A (en) * 2020-09-18 2021-01-19 常州市新创智能科技有限公司 Combined wind power blade root prefabricated part

Also Published As

Publication number Publication date
AU2003229497A1 (en) 2003-10-13
DE10214340C1 (en) 2003-11-27
DE20320626U1 (en) 2005-02-10

Similar Documents

Publication Publication Date Title
DE10214340C1 (en) Blade connection for the rotor blades of a wind turbine and method for its production
DE102007020338B4 (en) Method of making sheets
DE602004008070T2 (en) METHOD FOR PRODUCING A TURBINE WING FOOT
DE102007020339B4 (en) Rotor blade for a wind turbine
EP1832733B1 (en) Inlet cone made of a fibre composite for a gas turbine plant and method for its manufacture
DE102007007092A1 (en) Carbon-glass hybrid spar for rotor blades of a wind turbine
DE102008037522A1 (en) Rotor blades and methods for their manufacture
EP3018342B1 (en) Method for producing a rotor blade of a wind turbine
DE102013217128A1 (en) Rotor blade element for a wind energy plant, rotor blade, and a manufacturing method therefor and wind turbine with rotor blade
DE102013109383A1 (en) Rotor blades with infused prefabricated spar bars and method for producing the same
EP2670581B1 (en) Method, semi-finished product for the production of a fibre-reinforced component of a wind energy plant and use of the semi-finished product
DE102013019677A1 (en) Exterior skin component for a vehicle
WO2010086268A2 (en) Turbine blade, especially rotor blade for a steam engine, and corresponding method of manufacture
EP2602098A1 (en) Repair method
EP1663625A1 (en) Force-introduction point in core composites and method for producing said point using reinforcement elements that traverse the thickness of the core composite
EP3843981A1 (en) Fiber-reinforced composite blank, fiber-reinforced composite component, rotor blade element, rotor blade and wind turbine and method for producing a fiber-reinforced composite blank and method for producing a fiber-reinforced composite component
EP3299613B1 (en) Rotor blade with termination flange
DE3117126C2 (en) Shaft coupling with an elastic membrane
EP2890552B1 (en) Method for producing a rotor blade and rotor blade of a wind turbine
DE102016007675A1 (en) Trailing edge belt with rectangular cross section
DE102016206179A1 (en) Generator rotor for a generator of a wind turbine or a hydroelectric power plant, and generator, wind turbine and hydroelectric power plant with selbigem
EP1354144B1 (en) Hydrodynamic axial slide bearing for a generator
EP3564523B1 (en) Flange fitting for a wind energy assembly rotor blade, reinforcement layer for a flange fitting, flange inserter, wind energy assembly rotor blade, wind turbine and method for producing a flange fitting
DE102014215390B3 (en) Arrangement with a metallic connection element and a fiber composite material
WO2017118578A1 (en) Fiber composite component, structural component, and production method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP