EP2422083A2 - Mat pour aerogenerateur - Google Patents

Mat pour aerogenerateur

Info

Publication number
EP2422083A2
EP2422083A2 EP09776553A EP09776553A EP2422083A2 EP 2422083 A2 EP2422083 A2 EP 2422083A2 EP 09776553 A EP09776553 A EP 09776553A EP 09776553 A EP09776553 A EP 09776553A EP 2422083 A2 EP2422083 A2 EP 2422083A2
Authority
EP
European Patent Office
Prior art keywords
corner
profiles
sub
profile
adjacent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09776553A
Other languages
German (de)
English (en)
Inventor
Klaus HÜSEMANN
Willi Meiners
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.)
Rautaruukki Oyj
Original Assignee
Ruukki Dortmund 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 Ruukki Dortmund GmbH filed Critical Ruukki Dortmund GmbH
Publication of EP2422083A2 publication Critical patent/EP2422083A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures
    • 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
    • F03D13/10—Assembly of wind motors; Arrangements for erecting 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
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/912—Mounting on supporting structures or systems on a stationary structure on a tower
    • F05B2240/9121—Mounting on supporting structures or systems on a stationary structure on a tower on a lattice tower
    • 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 invention relates to a tower for a wind turbine with a plurality of Eckstielen to form a mast construction, wherein the corner posts are each composed of a plurality of interconnected sub-profiles, the opposite terminal areas, where adjacent sub-profiles of a Eckstiels are connected to each other, and wherein the sub-profiles respectively In cross-section, in a section lying between opposite connection regions of the partial profile, two kinks extending in the longitudinal extension direction of the partial profiles must have.
  • BESTATIGUNGSKOPIE are connected by means of a carrier.
  • a carrier Such a designed lattice tower has the advantage that the profile of the corner stems is made stronger by the provision of an additional support. This results in corner handles with a comparison made of angle profiles conventional corner handles significantly improved buckling length.
  • corner handles are composed of several sub-profiles, generally up to a number of four. In this solution, however, four corner handles are still used for the mast construction.
  • the disadvantage is that the important for the buckling stability radii of gyration are very low, since a large part of the cross-sectional area of the corner handles lies in the center of gravity. Accordingly, many intermediate supports of the corner handles by means of braces are necessary, which significantly increases the design effort.
  • EP 1 442 807 A1 describes a corner pedestal profile optimized with regard to material usage and assembly.
  • a commercial I-profile which has a central web and straps and is known under the name "Peiner-carrier”, brought after the rolling process of the profile production in a new shape, so that the straps enclose an angle of 90 degrees with each other
  • the new profile produced in this way can be open or closed, in which case the straps are welded together at the contact line, which is complicated because after the rolling of the I-profile, a further production process is necessary.
  • the large cross-sectional area which can be achieved with only one profile, and the opposite angular construction larger radius of gyration.
  • the disadvantage is that the radius of gyration compared to a comparable tube is substantially (about factor 1, 4) smaller, and that struts of the corner handles do not initiate the forces in the direction of the center of gravity of the profile, so that the corner posts are twisted.
  • a spacer element which is referred to as a binding plate, is arranged between the partial profiles.
  • the necessary distance of the additional screws and thus the number of necessary binding plates results from the buckling stability of the profile half with the lower area moment of inertia.
  • DE 10 2007 039 957 A1 discloses a tower construction for the realization of large tower heights, in which two partial profiles are used for the construction of a corner post, which form a corner post segment mounted to form an overall profile.
  • An inner contour which is formed by the connection of three inner corners of the overall profile, has almost the shape of a triangle.
  • the outer contour of the overall profile has connection areas for firing plates, on which struts of the lattice mast are fastened.
  • the subprofiles have a different geometry and must also be provided with bends of up to 70 degrees. This is technically complex.
  • severe deformations of the material cause the risk that strong internal stresses or previous damage will be introduced into the material as a result of the deformation.
  • the tower construction is carried out by screw connections, preferably at the site of the structure.
  • screw connections preferably at the site of the structure.
  • handholes must be provided in the sub-profiles.
  • Object of the present invention is to provide an improved tower for a wind turbine with a Eckstielkonstrutation for lattice towers, in which the corner posts have the same area moment of inertia around both main axes sen and is as easy as possible to manufacture and assemble.
  • the corner handles are each formed from at least three sub-profiles, wherein the at least three sub-profiles of a corner stem form an annular profile closed in cross-section.
  • the joints of a connection of terminal portions of adjacent sub-profiles of a corner handle are each arranged in alignment with a respective adjacent parting line of the corner stem in the longitudinal direction extending adjacent corner post, the compound can be arranged one above the other Corner handles, ie the connection of two corner handle segments to a corner handle, simplify and optimize the power flow.
  • the partial profiles are preferably folded at the two kinks in the region between the connection areas with an internal angle of ⁇ of 120 ° to 160 °, preferably 140 °.
  • connection regions are cut at opposite outer edges of a partial profile with an internal angle ⁇ of 110 °.
  • the opposite, bevelled connection areas of adjacent sub-profiles, which are connected to one another at the connection areas should be aligned parallel to one another.
  • the connection areas of a sub-profile should then be aligned in cross-section at an angle in the range of 150 ° to 125 °, preferably of 110 ° to each other.
  • coupling plates are provided for the coupling of partial profiles, which are each connected at least to the two opposite connection areas of an associated sub-profile.
  • the sub-profiles can be stiffened by the fact that their connection areas, which are otherwise only connected to connection areas of adjacent sub-profiles, are additionally stiffened by connection to one another.
  • the coupling plates provide for a stiffening of the sub-profiles of the corner handles on the areas particularly stressed by the application of force of the cross braces, especially when the coupling plates are mounted in the region of the height of the cross braces.
  • the coupling plates are bent at an angle ⁇ in an area between 110 ° and 130 °, preferably 120 °, in a region lying between the connection points with the opposite connection regions of a sub-profile assigned.
  • the coupling plates extend through the center of gravity of the associated corner handle, so that the attached at a height of a corner handle a plurality of coupling plates form a cuspid that runs through the center of gravity of the corner handle and the free ends are directed to the terminal portions of the sub-profiles of a corner handle.
  • This bump star can be formed of several separate coupling plates or a one-piece star-shaped coupling plate.
  • the coupling plates can each be guided between two connection regions of adjacent partial profiles, with the adjacent partial profiles being connected to one another at the two connection regions and the coupling plate.
  • the coupling plates recess such. B. have holes that are adapted to corresponding mounting recesses / holes on the connection areas of the sub-profiles to pass through fastening bolts or rivets through the aligned recesses and thus to connect the sub-profiles at the terminal areas with each other and with the coupling plate.
  • partial profiles of the lower Eckstielsegmente the mast construction have a different, preferably smaller material thickness than the sub-profiles at least one arranged above the lower Eckstielsegmente Eckstielsegmenten. In this way, the material consumption of material for the sub-profiles can be minimized.
  • the width and height of the cross section of the overall profile of the Eckstielsegmente in the lower part of the tower structure can be greater than in the upper Esrcich.
  • the designed as stated above tower preferably has a height of more than 80 m and is therefore suitable for larger loads and designed.
  • corner posts are connected to one another via cross struts, wherein the cross struts mounted at a height on a corner post are arranged and aligned such that the longitudinal axes of the cross struts of a corner post meet in the center of gravity of the overall section of the corner post formed by the section sections.
  • Figure 1 cross-sectional view of a corner handle formed from three sub-profiles mix transverse strands at connection areas;
  • Figure 2 Horizontal section through a tower with six star-shaped corner stems and cross struts between the corner stems;
  • Figure 3 sketch of a section of two superimposed Eckstielsegmenten a multi-part Eckstiels
  • Figure 4 Horizontal cross section through a corner post with connecting areas connecting coupling plates
  • Figure 5 Horizontal cross-sectional view of a sub-profile with advantageous dimensions.
  • FIG. 1 shows a horizontal cross section through a corner post 1, which is formed from three identical sub-profiles 2.
  • the sub-profiles 2 extend in a longitudinal direction (in the viewing direction) and have at the two free outer edges connecting portions 3a, 3b, at which adjacent sub-profiles 2 are interconnected. With the aid of these connection areas 3a, 3b, the sub-profiles 2 can be connected to one another in a ring-shaped manner to form a closed overall profile in order to form a corner post 1.
  • connection areas 3a, 3b of adjacent sub-profiles 2 are aligned parallel to one another and can be screwed, welded, riveted or otherwise fastened together in this way.
  • connection areas 3a, 3b there are joints which can be attached, for example by means of coupling plates 4, to cross-members 5.
  • These cross struts 5 are used for Connection of several, a tower construction forming and distributed on a circumference arranged corner handles 1.
  • the partial profiles 2 are folded twice in the region between the opposing connection regions 3a, 3b by an angle ⁇ in each case.
  • the angle ⁇ is in the range of 120 ° to 160 ° and is preferably about 140 °.
  • connection areas 3a, 3b are formed by folding the outer edges of the sub-profiles 2 by an angle ß.
  • the angle ⁇ is in the range of 115 ° to 125 ° and is preferably about 110 °, taking into account the usual tolerances.
  • connection regions 3a, 3b of a partial profile obtained by such folding are aligned at an angle / to one another, which is preferably in a range of 115 ° to 125 ° and is preferably approximately 120 °.
  • the sub-profiles 2 of a corner part 1 are thus also aligned at an angle / of 115 ° to 125 ° and preferably about 120 ° to each other. Then, as shown, three sub-profiles 2 result in an annularly closed overall profile.
  • FIG. 2 shows a horizontal section through a tower construction 6 with six corner posts 2 arranged on a circumference U (star-shaped).
  • the corner posts 2 consist in the longitudinal direction of a plurality of Eckstielsegmenten arranged one above the other, which are each formed of three, preferably folded, formed from sheets sub-profiles 2.
  • the construction shown by way of example can, for. B. be a lattice mast with six corner posts 2 and a height of the lattice mast of about 120 m. On the lattice mast is a wind turbine with a power z. B. of up to 2 megawatts arranged.
  • corner handles 2 are mutually connected with cross struts 5, which are attached to each other assigning joints of opposite corner handles 1.
  • cross struts 5 are attached to each other assigning joints of opposite corner handles 1.
  • transverse struts 5 of a corner handle 1 are guided to the respectively immediately adjacent corner handles 1.
  • a strut with four transverse struts 5 is provided at a height of one ⁇ eksUeis i per Ecksiiei 1.
  • FIG. 3 shows a sketch of a detail of two corner stalk segments 7, 8 of a corner stalk 1 arranged vertically one above the other.
  • the upper corner leg segment 7 has a smaller cross section than the lower corner leg segment 8.
  • the corner leg segments 7, 8 are interconnected by means of central coupling plates 9, 10. These coupling plates 9, 10 form connecting elements, with which the stacked Eckstielsegmente 7, 8 are connected to each other and through which the overall profile of the corner handle 2 is stiffened.
  • FIG. 4 shows a sketch of an exemplary embodiment of a corner post 1, which is formed from three sub-profiles 2.
  • the sub-profiles 2 are in turn each stiffened by means of coupling plates 11 each to a closed profile, wherein the coupling plates 11 are guided to the center of gravity of the corner handle 1 and form a connecting star.
  • These coupling plates 11 are preferably used in the middle height segment of the tower construction.
  • the corner handles 1 used material is preferably a structural steel such.
  • a grade S 355 fine grain steel with a length of 12 m and a material thickness of 8 mm.
  • the sub-profiles and / or transverse struts can also at least partially by non-metallic ma- materials such. As laminated carbon fibers or fibrous natural materials are formed.
  • Subprofile 2 with a profile height of 108.34 mm and a profile width of 567.63 mm result in the following area moments of inertia for the subprofiles 2:
  • the partial profiles 2 have an angle ⁇ of 140 degrees and two angles ⁇ of 110 degrees each.
  • the angled connection areas 3a, 3b of the sub-profiles 2 have a length, on the one hand, the assembly of the coupling plates 11, d. H. the fittings, and on the other is designed to ensure the necessary stiffening of the profile.
  • the focus of the area moment of inertia lies in the center of gravity of the overall profile.
  • the forces introduced by the struts of a connection height into the individual corner posts 1 are also aligned with the center of gravity of the area moment of inertia, whereby the torsional stress of the corner posts 1 is minimized.
  • the construction has the advantage that in the mounted state a nearly closed profile of the corner post 1 results, wherein the area moment of inertia of the main axes of the corner posts 1 are almost identical.
  • the overall profiles of the corner handles 1 form corner post segments 7, 8.
  • the corner post segments 7, 8 are arranged in the vertical direction to each other and can nen z. B. by means of a central baffle, which may be, for example, as shown in Figure 3 coupling plates 9, 10 or the star-shaped coupling plates 11 of Figure 4.
  • the central baffles can be made in one piece or even in several parts.
  • the central baffle plates consist of three interconnected coupling plates 11, as sketched in FIG. These baffles should be merged star-shaped as shown in the center of gravity. These one-piece and multi-part versions of the central star-shaped merged bump plates are referred to below as a cushions.
  • the rollover stars have the manufacturing advantage that the individual central baffle plates of a cornerstroke joint consist of one part or of equal parts.
  • the assembly of the corner handles 1 is simplified.
  • the cushioned star causes a stiffening of the Eckstielprofile to the areas particularly stressed by the application of force of the cross braces 5 points.
  • a particularly advantageous embodiment of the overall profiles results from a variation of the material thickness and / or by the variation of the profile geometry, such. B. the width and the height of the cross section of the overall profile. This makes it possible to minimize the material consumption of Profi I material.
  • the use of fine grain structural steel is advantageous in this context, since from this the respective partial profiles can be manufactured exactly to the static requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un mât pour aérogénérateur, avec une pluralité de montants d'angle (1) formant une construction de mât. Les montants d'angle (1) sont fabriqués à l'aide de plusieurs profilés individuels (2) reliés ensemble, comprenant des zones de raccordement (3a, 3b) opposées au niveau desquelles des profilés individuels (2) adjacents d'un montant d'angle (1) peuvent être reliés ensemble. Les profilés individuels (2) possèdent en coupe, sur une section du profilé individuel (2) située entre deux zones de raccordement (3a, 3b) opposées, deux points d'inflexion s'étendant dans la direction d'extension longitudinale des profilés individuels (2). Les montants d'angle (1) sont fabriqués à l'aide d'au moins trois profilés individuels (2), lesdits au moins trois profilés individuels (2) d'un montant d'angle (1) formant un profil général fermé, de forme annulaire en coupe. Les joints, aux points de liaison entre les zones de raccordement (3a, 3b) de profilés individuels (2) adjacents d'un montant d'angle (1), sont alignés avec un joint adjacent d'un montant d'angle (1) adjacent qui prolonge le montant d'angle (1) dans la direction d'extension longitudinale.
EP09776553A 2009-04-22 2009-04-22 Mat pour aerogenerateur Withdrawn EP2422083A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/002928 WO2010121630A2 (fr) 2009-04-22 2009-04-22 Mât pour aérogénérateur

Publications (1)

Publication Number Publication Date
EP2422083A2 true EP2422083A2 (fr) 2012-02-29

Family

ID=43011525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09776553A Withdrawn EP2422083A2 (fr) 2009-04-22 2009-04-22 Mat pour aerogenerateur

Country Status (4)

Country Link
US (1) US8474212B2 (fr)
EP (1) EP2422083A2 (fr)
CN (1) CN102439303A (fr)
WO (1) WO2010121630A2 (fr)

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US9290959B1 (en) * 2014-03-12 2016-03-22 e.Construct.USA, LLC Site-cast coupled prestressed concrete wind tower
DE102014118251B4 (de) 2014-12-09 2017-05-04 SIAG Industrie GmbH Verfahren zur Herstellung und zum Errichten eines Rohrturmbauwerks
DE102015115645A1 (de) 2015-09-16 2017-03-16 SIAG Industrie GmbH Verfahren zur Herstellung und zum Errichten eines Rohrturmbauwerks
WO2016091500A1 (fr) 2014-12-09 2016-06-16 SIAG Industrie GmbH Construction de porte pour édifice formant tour tubulaire
DE102015014458A1 (de) 2015-09-16 2017-03-16 Senvion Gmbh Türkonstruktion für ein Rohrturmbauwerk
DE102015115646A1 (de) 2015-09-16 2017-03-16 SIAG Industrie GmbH Türkonstruktion für ein Rohrturmbauwerk
GB2544459A (en) * 2015-10-16 2017-05-24 Hutchinson Eng Ltd Structural support
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Also Published As

Publication number Publication date
US8474212B2 (en) 2013-07-02
CN102439303A (zh) 2012-05-02
WO2010121630A3 (fr) 2011-05-26
US20120137621A1 (en) 2012-06-07
WO2010121630A2 (fr) 2010-10-28

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