ES2350135A1 - Connection system for mixed towers of wind turbines (Machine-translation by Google Translate, not legally binding) - Google Patents

Connection system for mixed towers of wind turbines (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2350135A1
ES2350135A1 ES200801995A ES200801995A ES2350135A1 ES 2350135 A1 ES2350135 A1 ES 2350135A1 ES 200801995 A ES200801995 A ES 200801995A ES 200801995 A ES200801995 A ES 200801995A ES 2350135 A1 ES2350135 A1 ES 2350135A1
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tower
towers
connection system
metal
mixed wind
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ES2350135B2 (en
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Jesus Montaner Fraguet
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Structural Concrete and Steel SL
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Structural Concrete and Steel SL
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    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D11/04—
    • 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
    • Y02E10/728—Onshore wind turbines

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  • 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

Connection system for mixed wind turbine towers of the type used in wind turbine towers made with prefabricated concrete elements vertically tensioned by flexible metal cables to connect with the upper section of the tower, conventionally made of metal, characterized in that it uses a piece of intermediate connection, joined to the lower part of the tower by means of a peripheral sewing directly to the same flexible metal cables of vertical tensioning of the tower, while at the top it is joined to the upper section of the tower by means of conventional mechanical fixing means. The invention presented provides the main advantage of achieving a connection between the lower part of the tower made with prefabricated concrete elements and the conventional upper part made of metal maintaining the same structural resistance as the lower part of the tower. (Machine-translation by Google Translate, not legally binding)

Description

Sistema de conexión para torres mixtas de aerogeneradores.Connection system for mixed towers of wind turbines

La presente memoria descriptiva se refiere, como su título indica, a un sistema de conexión para torres mixtas de aerogeneradores, entendiéndose como torres mixtas las torres de elementos prefabricados de hormigón coronadas por una torre metálica, del tipo de los utilizados en torres de aerogeneradores realizadas con elementos prefabricados de hormigón tensados verticalmente mediante cables metálicos flexibles para enlazar con el tramo superior de la torre, realizado convencionalmente en metal, caracterizado porque utiliza una pieza de unión intermedia, solidarizada con la parte inferior de la torre mediante un cosido periférico directo a los mismos cables metálicos flexibles de tensado vertical de la torre, mientras que por la parte superior se solidariza al tramo superior de la torre mediante medios mecánicos de fijación convencionales.The present specification refers to, as its title indicates, to a connection system for mixed towers of wind turbines, understood as mixed towers the towers of precast concrete elements crowned by a tower metal, of the type used in wind turbine towers made with precast reinforced concrete elements vertically using flexible metal cables to link with the upper section of the tower, conventionally made of metal, characterized in that it uses an intermediate joint piece, in solidarity with the bottom of the tower by sewing direct peripheral to the same flexible metal cables of vertical tensioning of the tower, while at the top it solidarity with the upper section of the tower by mechanical means of conventional fixation.

En la actualidad son ampliamente conocidos múltiples y variados tipos de generadores de electricidad a partir de la energía eólica, también conocidos como aerogeneradores. Estos generadores constan de una turbina asociada a unas aspas que está soportada sobre una torre. En la actualidad la tecnología constructiva de las torres para aerogeneradores ha evolucionado hacia torres de mayor altura y capacidad de generación, las cuales, para conseguir mayor rigidez y resistencia estructural son realizadas principalmente mediante elementos prefabricados de hormigón, que, aparte de otros tipos de refuerzo y tensado, incorporan unos cables metálicos flexibles, anclados a la zapata de cimentación y verticalmente dispuestos que tensan la torre y garantizan una alta resistencia estructural.They are now widely known multiple and varied types of electricity generators from of wind power, also known as wind turbines. These generators consist of a turbine associated with blades that is supported on a tower. Technology today construction of the towers for wind turbines has evolved towards towers of greater height and generation capacity, which, to achieve greater rigidity and structural strength are made mainly by prefabricated elements of concrete, which, apart from other types of reinforcement and tension, they incorporate flexible metal cables, anchored to the shoe of foundation and vertically arranged that tension the tower and guarantee high structural strength.

Un ejemplo de este tipo de torres prefabricadas lo encontramos descrito en el Modelo de Utilidad 200402504 "Estructura perfeccionada de torre modular para turbinas eólicas y otras aplicaciones", en la que los cables tensores están dispuestos por el interior de la torre estando únicamente relacionados con los elementos que conforman la torre en unos pocos puntos. Otro ejemplo de estas realizaciones los encontramos reivindicado en la Patente ES 200500965 "Torre modular prefabricada", en la que, además de usar cables tensores periféricos horizontalmente dispuestos, los cables tensores verticales van discurriendo completamente por el interior de las piezas que conforman las paredes de la torre, a través de unas canalizaciones apropiadas, con la consiguiente mejora tanto en resistencia estructural como en acabado estético.An example of this type of prefabricated towers is described in Utility Model 200402504 "Improved modular tower structure for wind turbines and other applications ", in which the tension cables are arranged inside the tower being only related to the elements that make up the tower in a few points. Another example of these embodiments is found in the patent ES 200500965 " Prefabricated modular tower ", in which, in addition to using horizontally arranged peripheral tension cables, the vertical tension cables run completely through the interior of the parts that make up the walls of the tower, through appropriate pipes, with the consequent improvement in both structural strength and aesthetic finish.

Sobre la base y soporte de estas torres realizadas en elementos prefabricados de hormigón armado, se suele finalizar colocando un tramo final consistente en una torre convencional metálica, bien con estructura de celosía o con forma cilíndrica o tronco cónica hueca, conformando lo que denominamos una torre "mixta". Estas torres metálicas, cuando se utilizan por separado en aerogeneradores convencionales de baja altura, están directamente fijadas al suelo mediante atornillado a una dovela circular inserta en la zapata de hormigón de la cimentación. Sin embargo, el uso de una dovela similar para su unión a la parte superior de la torre realizada con elementos prefabricados de hormigón armado no es posible, ya que el escaso espesor de las paredes laterales de dichos elementos prefabricados imposibilita el correcto anclaje de la torre con la suficiente resistencia estructural requerida para soportar la parte superior del aerogenerador y la fuerza ejercida por el viento.On the base and support of these towers made of precast reinforced concrete elements, usually end by placing a final stretch consisting of a tower conventional metal, either with lattice structure or shaped cylindrical or hollow conical trunk, forming what we call a "mixed" tower. These metal towers, when used by separated in conventional low-rise wind turbines, they are directly fixed to the ground by screwing a dovela circular inserts in the concrete footing of the foundation. Without However, the use of a similar dovela for attachment to the part tower top made with prefabricated elements of reinforced concrete is not possible, since the low thickness of the side walls of said prefabricated elements precludes the correct tower anchor with sufficient strength structural required to support the upper part of the wind turbine and the force exerted by the wind.

Para solventar esta problemática existente en la actualidad de la fijación del tramo final consistente en una torre convencional metálica sobre torres realizadas en elementos prefabricados de hormigón armado se ha ideado el sistema de conexión para torres mixtas de aerogeneradores objeto de la presente invención, el cual utiliza una pieza de unión intermedia, solidarizada con la parte inferior de la torre mediante un cosido periférico directo a los mismos cables metálicos flexibles de tensado vertical de la torre, mientras que por la parte superior se solidariza al tramo superior de la torre mediante medios mecánicos de fijación convencionales.To solve this problem in the actuality of the fixation of the final section consisting of a tower conventional metal on towers made in elements Precast reinforced concrete connection system has been devised for mixed wind turbine towers object of the present invention, which uses an intermediate connecting piece, in solidarity with the bottom of the tower by sewing direct peripheral to the same flexible metal cables of vertical tensioning of the tower, while at the top it solidarity with the upper section of the tower by mechanical means of conventional fixation.

La pieza de unión consiste en una corona circular inferior y una corona circular superior de menor diámetro exterior que la inferior, ambas horizontalmente dispuestas y relacionadas entre sí por una pared vertical de directriz troncocónica o cilíndrica. La corona circular superior dispone de una pluralidad de perforaciones dispuestas circularmente para la fijación del tramo superior metálico de la torre mediante fijaciones mecánicas convencionales. La corona circular inferior dispone asimismo de una pluralidad de perforaciones por las que atraviesan los cables flexibles de tensado vertical de la torre, que son tensados, por ejemplo mediante gatos hidráulicos, y cerrados mediante cuñas cónicas de bloqueo sobre unos discos de cierre.The union piece consists of a crown lower circular and a smaller circular upper crown outside than the bottom, both horizontally arranged and related to each other by a vertical guideline wall conical or cylindrical trunk. The upper circular crown has a plurality of perforations arranged circularly for the fixation of the upper metal section of the tower by means of fixings conventional mechanics The lower circular crown has also of a plurality of perforations through which they pass the flexible vertical tension cables of the tower, which are tensioned, for example by hydraulic jacks, and closed by conical locking wedges on closing discs.

Este sistema de conexión para torres mixtas de aerogeneradores que se presenta aporta múltiples ventajas sobre los sistemas disponibles en la actualidad siendo la más importante que se consigue una unión entre la parte inferior de la torre, realizada con elementos prefabricados de hormigón, y la parte superior convencional realizada de metal manteniendo la misma resistencia estructural que la parte inferior de la torre.This connection system for mixed towers of Wind turbines presented brings multiple advantages over currently available systems being the most important that a union is achieved between the bottom of the tower, made with precast concrete elements, and the top conventional made of metal maintaining the same resistance structural than the bottom of the tower.

Es importante añadir que, mediante esta invención, la parte superior de la torre queda directamente anclada, mediante los cables de tensado, a la zapata de cimentación de la torre.It is important to add that, through this invention, the upper part of the tower is directly anchored, using the tensioning cables, to the foundation shoe of the tower.

Otra importante ventaja es que este sistema de conexión puede aplicarse indistintamente tanto a torres en los que los cables de tensado van empotrados por el interior de la pared, como a torres en las que los cables de tensado discurren por el interior de la torres, pero sin estar empotrados en sus paredes.Another important advantage is that this system of connection can be applied interchangeably to both towers where the tensioning cables are embedded inside the wall, as to towers in which the tension cables run through the interior of the towers, but without being embedded in its walls.

Asimismo podemos destacar la economía del sistema, al utilizar los mismos cables de tensado de los elementos prefabricados de hormigón para la fijación de la pieza de unión, y por tanto de la torre metálica superior, con lo cual, por añadidura, el proceso de colocación es rápido y económico.We can also highlight the economy of system, when using the same tensioning cables of the elements prefabricated concrete for fixing the connecting piece, and therefore of the upper metal tower, which, in addition, The placement process is fast and economical.

Para comprender mejor el objeto de la presente invención, en el plano anexo se ha representado una realización práctica preferencial de un sistema de conexión para torres mixtas de aerogeneradores. En dicho plano la figura -1- muestra una vista general lateral de un aerogenerador construido según la invención, detallando la colocación de la pieza de unión.To better understand the purpose of this invention, an embodiment has been shown in the attached drawing preferential practice of a connection system for mixed towers of wind turbines. In that plane, figure -1- shows a view general side of a wind turbine built according to the invention, detailing the placement of the joint piece.

La figura -2- muestra una vista en planta de la pieza de unión.Figure -2- shows a plan view of the Union piece.

La figura -3- muestra una vista en planta en detalle ampliado y una vista en sección de la pieza de unión.Figure -3- shows a plan view in enlarged detail and a sectional view of the joint piece.

La figura -4- muestra un detalle en sección lateral del montaje de la unión.Figure -4- shows a detail in section side of the union assembly.

El sistema de conexión para torres mixtas de aerogeneradores objeto de la presente invención, comprende básicamente, como puede apreciarse en el plano anexo, una pieza de unión (1) intermedia, solidarizada con la parte de hormigón (2) de la torre, realizada por tramos mediante elementos prefabricados de hormigón, mediante un cosido periférico directo a los mismos cables (3) metálicos flexibles de tensado vertical de dicha parte de hormigón (2), mientras que por la parte superior se solidariza a la parte metálica (4) de la torre, consistente en una torre metálica, mediante medios mecánicos de fijación convencionales (15), por ejemplo tornillos y tuercas.The connection system for mixed towers of wind turbines object of the present invention, comprises basically, as can be seen in the attached plan, a piece of intermediate junction (1), in solidarity with the concrete part (2) of the tower, made by sections using prefabricated elements of concrete, by direct peripheral sewing to the same cables (3) flexible vertical tensioning metal of said part of concrete (2), while the upper part is in solidarity with the metal part (4) of the tower, consisting of a metal tower, by conventional mechanical fixing means (15), by Example screws and nuts.

La pieza de unión (1) consiste en una corona circular inferior (5) y una corona circular superior (6) de menor diámetro exterior que la inferior (5), ambas horizontalmente dispuestas y relacionadas entre sí por una pared (7) vertical de directriz troncocónica o cilíndrica. La corona circular superior (6) dispone de una pluralidad de perforaciones (8) dispuestas circularmente para la fijación de la parte metálica (4) de la torre mediante fijaciones mecánicas convencionales. La corona circular inferior (5) dispone asimismo de una pluralidad de perforaciones (9) por las que atraviesan los cables (3) flexibles de tensado vertical de la torre, que son tensados, por ejemplo mediante gatos hidráulicos, y cerrados mediante cuñas cónicas de bloqueo (10) sobre unos discos de cierre (11).The connecting piece (1) consists of a crown lower circular (5) and a smaller upper circular crown (6) outer diameter than the lower one (5), both horizontally arranged and related to each other by a vertical wall (7) of truncated conical or cylindrical guideline. The upper circular crown (6) It has a plurality of perforations (8) arranged circularly for fixing the metal part (4) of the tower by conventional mechanical fixings. The circular crown lower (5) also has a plurality of perforations (9) through which the flexible vertical tension cables (3) pass through of the tower, which are tensioned, for example by cats hydraulic, and closed by conical locking wedges (10) on closing discs (11).

Entre la corona circular inferior (5) y la corona circular superior (6), de forma perpendicular a la pared (7) vertical y radialmente distribuidos se encuentran distribuidos una pluralidad de contrafuertes exteriores (13) e interiores (14) para dar mayor rigidez a la pieza de unión (1).Between the lower circular crown (5) and the upper circular crown (6), perpendicular to the wall (7) vertically and radially distributed are distributed a plurality of exterior buttresses (13) and interior (14) for give greater rigidity to the connecting piece (1).

Entre la pieza de unión (1) y la terminación superior de la parte de hormigón (2) de la torre se intercala una capa de elemento de nivelación (12), como por ejemplo cemento grout.Between the connecting piece (1) and the termination top of the concrete part (2) of the tower is sandwiched a layer of leveling element (12), such as cement grout

Esta pieza de unión (1) puede utilizarse indistintamente en torres mixtas en los que los cables (3) de tensado van empotrados por el interior de la pared, y en torres en las que los cables (3) de tensado discurren por el interior de la torres, pero sin estar empotrados en sus paredes.This connecting piece (1) can be used interchangeably in mixed towers in which the cables (3) of tensioned they are embedded inside the wall, and in towers in which the tensioning cables (3) run through the interior of the towers, but without being embedded in its walls.

Claims (9)

1. Sistema de conexión para torres mixtas de aerogeneradores, realizadas con elementos prefabricados de hormigón, del tipo de los tensados verticalmente mediante cables metálicos flexibles, y coronadas por una torre metálica, caracterizado porque comprende una pieza de unión (1) intermedia, solidarizada con la parte de hormigón (2) de la torre, realizada mediante elementos prefabricados de hormigón, mediante un cosido periférico directo a los mismos cables (3) metálicos flexibles de tensado vertical de la parte de hormigón (2), mientras que por la parte superior se solidariza a la parte metálica (4) de la torre, consistente en una torre metálica, mediante medios mecánicos de fijación convencionales (15).1. Connection system for mixed wind turbine towers, made with prefabricated concrete elements, of the type of tensioned vertically by flexible metal cables, and surmounted by a metal tower, characterized in that it comprises an intermediate connecting piece (1), in solidarity with the concrete part (2) of the tower, made by prefabricated concrete elements, by means of a direct peripheral sewing to the same flexible metal cables (3) of vertical tensioning of the concrete part (2), while at the top the metal part (4) of the tower, consisting of a metal tower, is joined by conventional mechanical fixing means (15). 2. Sistema de conexión para torres mixtas de aerogeneradores, según la anterior reivindicación, caracterizado porque la pieza de unión (1) consiste en una corona circular inferior (5) y una corona circular superior (6) de menor diámetro exterior que la inferior (5), ambas horizontalmente dispuestas y relacionadas entre sí por una pared (7) vertical de directriz troncocónica o cilíndrica.2. Connection system for mixed wind turbine towers, according to the preceding claim, characterized in that the connecting piece (1) consists of a lower circular crown (5) and an upper circular crown (6) of smaller outside diameter than the lower one ( 5), both horizontally arranged and related to each other by a vertical wall (7) of a conical or cylindrical guideline. 3. Sistema de conexión para torres mixtas de aerogeneradores, según las anteriores reivindicaciones, caracterizado porque la corona circular superior (6) dispone de una pluralidad de perforaciones (8) dispuestas circularmente para la fijación de la parte metálica (4) de la torre mediante fijaciones mecánicas convencionales.3. Connection system for mixed wind turbine towers, according to the preceding claims, characterized in that the upper circular crown (6) has a plurality of perforations (8) arranged circularly for fixing the metal part (4) of the tower by conventional mechanical fixings. 4. Sistema de conexión para torres mixtas de aerogeneradores, según las anteriores reivindicaciones, caracterizado porque la corona circular inferior (5) dispone de una pluralidad de perforaciones (9) por las que atraviesan los cables (3) flexibles de tensado vertical de la torre, que son cerrados mediante cuñas cónicas de bloqueo (10) sobre unos discos de cierre (11), una vez tensados.4. Connection system for mixed wind turbine towers, according to the preceding claims, characterized in that the lower circular crown (5) has a plurality of perforations (9) through which flexible vertical tensioning cables (3) pass through the tower , which are closed by conical locking wedges (10) on closing discs (11), once tensioned. 5. Sistema de conexión para torres mixtas de aerogeneradores, según las anteriores reivindicaciones, caracterizado porque entre la corona circular inferior (5) y la corona circular superior (6), de forma perpendicular a la pared (7) cilíndrica vertical y radialmente distribuidos se encuentran distribuidos una pluralidad de contrafuertes exteriores (13) e interiores (14) para dar mayor rigidez a la pieza de unión (1).5. Connection system for mixed wind turbine towers, according to the preceding claims, characterized in that between the lower circular crown (5) and the upper circular crown (6), perpendicular to the vertical and radially distributed cylindrical wall (7) is a plurality of exterior buttresses (13) and interior (14) are distributed to give greater rigidity to the connecting piece (1). 6. Sistema de conexión para torres mixtas de aerogeneradores, según las anteriores reivindicaciones, caracterizado porque entre la pieza de unión (1) y la terminación superior de la parte de hormigón (2) de la torre se intercala una capa de elemento de nivelación (12).6. Connection system for mixed wind turbine towers, according to the preceding claims, characterized in that a leveling element layer is inserted between the connecting piece (1) and the upper termination of the concrete part (2) of the tower. 12). 7. Uso del sistema de conexión para torres mixtas de aerogeneradores, según las anteriores reivindicaciones, en torres de elementos prefabricados de hormigón coronadas por una torre metálica en las que la parte de hormigón (2) de la torre está realizada mediante elementos prefabricados de hormigón tensados verticalmente mediante cables (3) flexibles.7. Use of the connection system for towers mixed wind turbines, according to the preceding claims, in precast concrete element towers crowned by a metal tower in which the concrete part (2) of the tower is made by precast reinforced concrete elements vertically using flexible cables (3). 8. Uso del sistema de conexión para torres mixtas de aerogeneradores, según la reivindicación 7, en torres de elementos prefabricados de hormigón coronadas por una torre metálica en las que los cables (3) flexibles de tensado van empotrados por el interior de la pared.8. Use of the connection system for towers mixed wind turbines according to claim 7, in towers of precast concrete elements crowned by a metal tower in which the flexible tensioning cables (3) are embedded by the inside the wall. 9. Uso del sistema de conexión para torres mixtas de aerogeneradores, según la reivindicación 7, en torres de elementos prefabricados de hormigón coronadas por una torre metálica en las que los cables (3) flexibles de tensado discurren por el interior de la torres sin estar empotrados en sus paredes.9. Use of the connection system for towers mixed wind turbines according to claim 7, in towers of precast concrete elements crowned by a metal tower in which the flexible tensioning cables (3) run through the inside the towers without being embedded in its walls.
ES200801995A 2008-07-04 2008-07-04 CONNECTION SYSTEM FOR MIXED TOWERS OF WIND TURBINES Expired - Fee Related ES2350135B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019193388A1 (en) * 2018-04-03 2019-10-10 Cortina Cordero Alejandro Transition flange for a hybrid concrete–steel tower for wind turbines
CN113027691A (en) * 2019-12-24 2021-06-25 新疆金风科技股份有限公司 Tower drum foundation and wind generating set
ES2938008A1 (en) * 2021-10-01 2023-04-03 Esteyco S A INSTALLATION PROCEDURE FOR A TOWER AND TOWER INSTALLED WITH SUCH PROCEDURE (Machine-translation by Google Translate, not legally binding)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230273B3 (en) * 2002-07-05 2004-02-12 Institut für Fertigteiltechnik und Fertigbau Weimar e.V. Wind turbine tower has flanged cylindrical coupling piece for attaching upper cylindrical steel section to lower cylindrical concrete section
EP2009202A2 (en) * 2007-06-28 2008-12-31 Nordex Energy GmbH Wind farm tower
EP2239376A2 (en) * 2009-04-08 2010-10-13 Nordex Energy GmbH Anchoring component for a wind farm tower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230273B3 (en) * 2002-07-05 2004-02-12 Institut für Fertigteiltechnik und Fertigbau Weimar e.V. Wind turbine tower has flanged cylindrical coupling piece for attaching upper cylindrical steel section to lower cylindrical concrete section
EP2009202A2 (en) * 2007-06-28 2008-12-31 Nordex Energy GmbH Wind farm tower
EP2239376A2 (en) * 2009-04-08 2010-10-13 Nordex Energy GmbH Anchoring component for a wind farm tower

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019193388A1 (en) * 2018-04-03 2019-10-10 Cortina Cordero Alejandro Transition flange for a hybrid concrete–steel tower for wind turbines
CN113027691A (en) * 2019-12-24 2021-06-25 新疆金风科技股份有限公司 Tower drum foundation and wind generating set
ES2938008A1 (en) * 2021-10-01 2023-04-03 Esteyco S A INSTALLATION PROCEDURE FOR A TOWER AND TOWER INSTALLED WITH SUCH PROCEDURE (Machine-translation by Google Translate, not legally binding)
WO2023052668A1 (en) * 2021-10-01 2023-04-06 Esteyco S.A. Method for installing a tower and tower installed by said method

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