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WO2012130292A1 - Tour d'éolienne et son procédé de fabrication - Google Patents

Tour d'éolienne et son procédé de fabrication Download PDF

Info

Publication number
WO2012130292A1
WO2012130292A1 PCT/EP2011/054847 EP2011054847W WO2012130292A1 WO 2012130292 A1 WO2012130292 A1 WO 2012130292A1 EP 2011054847 W EP2011054847 W EP 2011054847W WO 2012130292 A1 WO2012130292 A1 WO 2012130292A1
Authority
WO
WIPO (PCT)
Prior art keywords
sri
wind turbine
turbine tower
segmented rings
rings
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/EP2011/054847
Other languages
English (en)
Inventor
Markus Krause
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.)
AMSC Windtec GmbH
Original Assignee
AMSC Windtec 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 AMSC Windtec GmbH filed Critical AMSC Windtec GmbH
Priority to PCT/EP2011/054847 priority Critical patent/WO2012130292A1/fr
Publication of WO2012130292A1 publication Critical patent/WO2012130292A1/fr
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
    • 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
    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • 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

Definitions

  • the present invention relates to a wind turbine tower and to a method of fabricating a wind turbine tower.
  • pre-tensioned concrete towers have a long history in wind power generation.
  • Conventional concrete towers are generally assembled from pre-fabricated elements, cast in sizes allowing road transportation. Concrete towers are capable of absorbing large moments in an economical way.
  • lattice towers Due to the very large base width, lattice towers provide lower weights and costs as other towers. The tallest wind turbines generally use lattice towers. However, their dynamic properties are hard to control and in conditions large where freezing occurs accumulations of ice may endanger the turbine.
  • wooden towers featuring laminated panels that are stacked crosswise and glued together.
  • the crosswise layering of the longitudinal and transversal laminated panels greatly reduces swelling and shrinking in the panel plane and greatly increases static ability to withstand stress as well as form stability.
  • the panels are assembled on-site to form an enclosed polygonal hollow body that contains all the wiring and ladder and lift systems. With this design fasteners are integrated into the tower components, and at the top of the tower there is a round, steel adaptor, connecting the tower to the turbine nacelle. Hub heights of up to 200 m seem to be technically and economically feasible.
  • the mass of wooden towers is comparable to some made of steel.
  • the base diameter is almost unlimited because wooden towers can be mounted of transportable parts on the construction site.
  • WO 2005/028781 A2 discloses a composite tower for a wind turbine.
  • the tower comprises several nested power sections that can telescope to increased heights.
  • Each section may be formed from two or more composite panels connected by two or more connectors, the sections comprising any of a plurality of polygonal shapes.
  • the panels may further comprise tough-tips form-core panels that have great strength properties.
  • the present invention provides a wind turbine tower according to claim 1 and to a method of fabricating a wind turbine tower according to claim 12.
  • segmented rings include aligned through-holes to form the channel.
  • said tensioning mechanism comprise cables. These cables can be stranded in order to enhance their stability.
  • said tensioning fasteners comprise nut and/or wedge fasteners. These type of fasteners are stable and can withstand high tensions.
  • support profile and/or said top profile are ring shaped.
  • the geometry of the support profile and/or said top profile can be adapted to the geometry of the stacked segmented rings in order to facilitate the mounting process.
  • the lowest one of said stacked segmented rings includes inner threaded sleeves for attaching the lowest one of said stacked segmented rings to the support profile.
  • said wooden panels within said segmented rings are horizontally connected by tongue and groove connectors.
  • said wooden panels are made of cross-laminated wood elements and have angled and/or curved and/or straight shape.
  • polygonal, curved or mixed geometries of the hollow body can be formed.
  • said top profile includes press studs for connecting to the uppermost one of said stacked segmented rings.
  • said tensioning mechanism include external extensions which together with said tensioning mechanism serve as lightning conductors, wherein said tensioning mechanism and said external extensions are electrically isolated from the wooden panels.
  • neighbouring segmented rings are connected by vertical panel connections which include adjacent step profiles of the rings and at least one fixing screw screwed through a edge of the adjacent step profiles.
  • Fig. 1 a,b show an embodiment of a wind turbine according to the present invention, namely Fig. la in vertical cross-section and Fig. lb in horizontal cross-section along line AA' in Fig. la;
  • Fig. 2 shows a horizontal cross-section along line AA' in Fig. 1 a for illustrating another embodiment of panels and horizontal panel connections within a segmented ring;
  • Fig. 3 shows a top view of the top profile of Fig. 1 a;
  • Fig. 5 shows a partial enlarged cross-section of Fig. la for illustrating another
  • Fig. 6 shows a partial enlarged cross-section of Fig. la for illustrating still another embodiment of the tensioning fastener at the support profile of Fig. la;
  • Fig. 7 shows a partial enlarged cross-section of Fig. la for illustrating an example of the tensioning fasterer at the top profile of Fig. la;
  • Fig. 8 shows a partial enlarged cross-section of Fig. la for illustrating another
  • a reference sign F denotes a reinforced concrete foundation as installation site for the wind turbine tower 1 according to this embodiment of the present invention.
  • a ring-shaped hexagonal support profile PS is attached by a fastening mechanism Fl in form of screws to the concrete foundation F.
  • the cross section of the support profile in this example is of u-shape, however, may vary along its length in order to make parts to be explained later accessible for workers.
  • the support profile PS is preferably made of steel or a single metal or metal alloy which exhibits good mechanical stability.
  • a top profile PT also made of a hexagonal steel ring SE welded to a cylindrical part CY is provided above the uppermost ring SR3 of the stacked segmented rings SRI, SR2, SR3.
  • the cylindrical part CY which is welded to the ring of the top profile serves to support the bearing and nacelle of the wind turbine (not shown here).
  • the segmented rings SRI, SR2, SR3, the support profile PS and the top profile PT include aligned through-holes TH which form channels CH that start from the support profile PS and end at the top profile PT.
  • a tensioning mechanism C in the form of stranded cables are provided through the channels CH and attached under tension to the support profile PS and to the top profile PT by tensioning fasteners TF such that the tensioning mechanism C pre-tensions the stacked segmented rings SRI, SR2, SR3 along the height direction.
  • the tensioning fasteners TF shown schematically in Figure la, however, will be explained greater detail below.
  • the support profile PS is connected to the lowest one of said stacked segmented rings SRI by a fastener F2, here screws. Each screw is screwed through corresponding holes of the support profile PS.
  • the stacked segmented rings SRI, SR2, SR3 are also of hexagonal shape with decreasing diameter such that the diameter of the hollow body decreases from the support profile PS to the top profile PT.
  • each wooden panel SI 1 to S16 includes two through- holes TH for forming corresponding channels for the tensioning mechanism C.
  • the wooden panels SI 1 to S 16 are horizontally connected by tongue and groove connectors NF formed in the panels SI 1 to S16 so as to form stable segmented rings.
  • the tongue and groove connectors NF are formed by extensions and grooves of the wooden panels S 11 to S 16 and may be fixed either by an adhesive or by other fasteners, e.g. screws.
  • the wooden panels SI 1 to S 16 have a trapezoidal shape.
  • Each wooden panel is on the order of several metres wide, is several metres high and has a thickness of 0.1 to 0.6 metres.
  • the wooden panels are made of cross-laminated wood elements in order to achieve a high stiffness and endurability.
  • the use of the tensioning mechanism in form of pre-tensioned cables allows the use of a wooden tower construction as a substitute for a concrete or steel tower, conventional structures known for their capability of withstanding relatively high fatigue loads that the tower for supporting the wind turbine is subjected.
  • a wooden tower with pre-tensioned cables C is less expensive, easier to manufacture and easier to transport than a conventional steel or concrete tower.
  • Fig. 2 shows a horizontal cross-section along line AA' in Fig. la for illustrating another embodiment of panels and horizontal panel connections within a segmented ring.
  • Fig. 4 shows a partial enlarged cross-section of Fig. la for illustrating an example of the tensioning fastener at the support profile of Fig. la.
  • the tensioning fasteners TF of this embodiment comprise wedges WD for clamping the pre-tensioned cable C as well as a nut NU screwed to a threaded sleeve SL provided at the end of the cable C.
  • wedge clamping and notch tensioning easy adjustment and re-adjustment of the tension of the cable C is possible.
  • the stress in the cable or the cables depends on the type of cables, e.g. cross-section, size of the tower and occurring loads, and e.g. be controlled every six months.
  • Fig. 5 shows a partial enlarged cross-section of Fig. la for illustrating another embodiment of the tensioning fastener at the support profile of Fig. 1 a.
  • the threaded sleeves G typically are located 30 to 60 cm above the support profile PF in the interior of the wooden panels of the segmented ring SRI . It should be noted that the cross-section of the support profile PS varies in order to make the fixing screws SC accessible for workers as well as the tensioning fasteners TF.
  • Fig. 6 shows a partial enlarged cross-section of Fig. la for illustrating still another embodiment of the tensioning fastener at the support profile of Fig. 1 a.
  • the concrete foundation F' is obliquely arranged.
  • the lower support profile PS' has a double-t structure which is more easily accessable for the mounting and/or repair process.
  • the remaining parts are the same as in Fig. 4 and 5, respectively.
  • a nut NU is screwed to a threaded sleeve SL provided at the end of the cable C as tensioning fastener TF.
  • Fig. 7 shows a partial enlarged cross-section of Fig. la for illustrating an example of the tensioning fastener at the top profile of Fig. la.
  • the top profile PT includes press studs D disposed on the portion of the top profile that contacts the uppermost segmented ring SR3 and which are pressed in the wood of the segmented ring SR3 at the time of pre-tensioning the cable C.
  • This arrangement ensures that there is no horizontal movement of the top Profile PT relative to the segmented ring SR3.
  • additional fasterners such as screws or screws in connection with threaded sleeves as used for the support profile PS can also be used for connecting of the top profile PT to the uppermost segment ring SR3.
  • the pre- stressing cables should be strong enough to take the full load under any load condition.
  • reference sign NSV schematically denotes a tension control and adjustment mechanism for monitoring the tension in the cable C and for providing an indication of deviations by a corresponding indicator.
  • Fig. 8 shows a partial enlarged cross-section of Fig. la for illustrating another embodiment of the tensioning fasterer of Fig. la.
  • the tensioning fastener of Fig. 8 which can also be used for the support profile PS and the top profile PT includes a steel plate SK with four holes HI to H4. Cables CI to C4 are led through each channel CH and pre-stressed by appropriate tensioning. The pre-stressed cables CI to C4 are then fixed by means of wedges WD in their respective pre-stressed positions.
  • Fig. 9 shows a partial enlarged vertical cross-section in a plane perpendicular to the plane of Fig. l a for illustrating vertical panel connections between neighbouring segmented rings.
  • neighbouring segmented rings SRI, SR2 are connected by vertical panel connections VC which include adjacent step profiles ST provided in the rings SRI , SR2 and aligned to each other.
  • a fixing screw SF is screwed through an edge K of the adjacent step profile ST.
  • the head of the fixing screw SF can be provided in a pocket of the wooden panels such that a smooth outer surface is provided.
  • one ore more additional fixing screws SF' may be used for this connection.
  • Fig. 10 shows another embodiment of a wind turbine according to the present invention in vertical cross-section.
  • reference sign F denotes a reinforced concrete foundation as installation site for the wind turbine tower 1 ' according to this embodiment of the present invention.
  • the cables C fulfil both the function of pretensioning as well as an electrical ground-path function thereby enhancing the cost effectiveness of the wind turbine power of this embodiment.
  • the shape of the segmented rings is not limited to the illustrated hexagonal shape but can be of arbitrary shape such as curved shape, polygonal shape or combinations thereof.
  • the type of the tensioning mechanism is not limited to stranded cables, but can be also rigid rods or combinations of rods and cables or multiple rods and / or cable within each channel.
  • the shape of the support profile is not restricted to the ring shape but the support profile can also be constituted of a plurality of profile elements which are separately fixed to the foundation.

Landscapes

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

Abstract

L'invention concerne une tour d'éolienne et son procédé de fabrication. Ladite tour d'éolienne comprend un corps creux (B) formé de plusieurs anneaux segmentés empilés (SR1, SR2, SR3) de panneaux en bois (S11-S16; S11'-S16'), ledit corps creux (B) ayant un canal (CH) le traversant; un profil support (PS; PS') placé sous le corps creux (B); un profil supérieur (PT) placé au-dessus du corps creux (B); et un mécanisme tendeur (C; C) guidé à travers le canal (CH) et fixé sous tension audit profil support (PS; PS') et audit profil supérieur (PT) de façon à mettre en tension lesdits anneaux segmentés empilés (SR1, SR2, SR3).
PCT/EP2011/054847 2011-03-29 2011-03-29 Tour d'éolienne et son procédé de fabrication Ceased WO2012130292A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/054847 WO2012130292A1 (fr) 2011-03-29 2011-03-29 Tour d'éolienne et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/054847 WO2012130292A1 (fr) 2011-03-29 2011-03-29 Tour d'éolienne et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2012130292A1 true WO2012130292A1 (fr) 2012-10-04

Family

ID=44625522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/054847 Ceased WO2012130292A1 (fr) 2011-03-29 2011-03-29 Tour d'éolienne et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2012130292A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013002549A1 (de) 2013-02-15 2014-08-21 Timbertower Gmbh Turm für eine Windkraftanlage
US20160311519A1 (en) * 2015-04-21 2016-10-27 General Electric Company Wind turbine dome and method of assembly
EP3056636B1 (fr) * 2015-02-11 2019-04-10 ZÜBLIN Timber Aichach GmbH Tour d'éolienne et son procédé de fabrication
CN114934879A (zh) * 2022-05-30 2022-08-23 兰州理工大学 一种可升降式风力发电机塔筒结构及其连接方法
SE2450673A1 (en) * 2024-06-19 2025-11-25 Modvion Ab Method for forming an integrated wind power tower structure and integrated wind power tower structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028781A2 (fr) 2003-09-16 2005-03-31 Clement Hiel Pylone composite d'eolienne et son procede d'assemblage
WO2008136717A1 (fr) * 2007-05-07 2008-11-13 Telefonaktiebolaget Lm Ericsson (Publ) Structure de tour d'antenne avec tige d'installation
US20100192503A1 (en) 2007-02-06 2010-08-05 Gregor Prasss Wind power plant
WO2010134863A1 (fr) * 2009-04-27 2010-11-25 Vertical Wind Ab Section pour un pilier de soutien d'éolienne à axe vertical et procédé de fabrication d'un tel pilier de soutien
WO2011023415A2 (fr) * 2009-08-24 2011-03-03 Siemens Aktiengesellschaft Système de protection contre la foudre
US20110061332A1 (en) * 2009-09-17 2011-03-17 Hettick Steven A Modular Tower Apparatus and Method of Manufacture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028781A2 (fr) 2003-09-16 2005-03-31 Clement Hiel Pylone composite d'eolienne et son procede d'assemblage
US20100192503A1 (en) 2007-02-06 2010-08-05 Gregor Prasss Wind power plant
WO2008136717A1 (fr) * 2007-05-07 2008-11-13 Telefonaktiebolaget Lm Ericsson (Publ) Structure de tour d'antenne avec tige d'installation
WO2010134863A1 (fr) * 2009-04-27 2010-11-25 Vertical Wind Ab Section pour un pilier de soutien d'éolienne à axe vertical et procédé de fabrication d'un tel pilier de soutien
WO2011023415A2 (fr) * 2009-08-24 2011-03-03 Siemens Aktiengesellschaft Système de protection contre la foudre
US20110061332A1 (en) * 2009-09-17 2011-03-17 Hettick Steven A Modular Tower Apparatus and Method of Manufacture

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013002549A1 (de) 2013-02-15 2014-08-21 Timbertower Gmbh Turm für eine Windkraftanlage
EP3056636B1 (fr) * 2015-02-11 2019-04-10 ZÜBLIN Timber Aichach GmbH Tour d'éolienne et son procédé de fabrication
US20160311519A1 (en) * 2015-04-21 2016-10-27 General Electric Company Wind turbine dome and method of assembly
US10507902B2 (en) * 2015-04-21 2019-12-17 General Electric Company Wind turbine dome and method of assembly
CN114934879A (zh) * 2022-05-30 2022-08-23 兰州理工大学 一种可升降式风力发电机塔筒结构及其连接方法
SE2450673A1 (en) * 2024-06-19 2025-11-25 Modvion Ab Method for forming an integrated wind power tower structure and integrated wind power tower structure
SE547783C2 (en) * 2024-06-19 2025-11-25 Modvion Ab Method for forming an integrated wind power tower structure and integrated wind power tower structure

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