DK200900200U3 - Tower segment and sheet item for a tower segment - Google Patents
Tower segment and sheet item for a tower segment Download PDFInfo
- Publication number
- DK200900200U3 DK200900200U3 DKBA200900200U DKBA200900200U DK200900200U3 DK 200900200 U3 DK200900200 U3 DK 200900200U3 DK BA200900200 U DKBA200900200 U DK BA200900200U DK BA200900200 U DKBA200900200 U DK BA200900200U DK 200900200 U3 DK200900200 U3 DK 200900200U3
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- DK
- Denmark
- Prior art keywords
- tower segment
- thickness
- section
- enlarged
- sheet blank
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000003313 weakening effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- 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
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0091—Offshore structures for wind turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/10—Manufacture by removing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2230/00—Manufacture
- F05B2230/20—Manufacture essentially without removing material
- F05B2230/26—Manufacture essentially without removing material by rolling
-
- 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
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- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Sustainable Energy (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
i iDK 2009 00200 U3i iDK 2009 00200 U3
Den foreliggende opfindelse angår overordnet et tårnsegment af typen med en rørformet form med en perifer væg, omfattende en åbning i den perifere væg for at tillade adgang til det indre af tårnet, hvor området omkring åbningen er forstærket for at kompensere for svækkelsen, som forårsages af åbningen.The present invention relates generally to a tower segment of the tubular shape having a peripheral wall, comprising an opening in the peripheral wall to allow access to the interior of the tower where the area around the opening is reinforced to compensate for the attenuation caused by opening.
Store vindturbinetårne er almindeligvis fremstillet af én eller flere rørformede rørsektioner. I det tilfælde, hvor tårnet er sammensat af mere end én tårnsektion, er de almindeligvis indbyrdes forbundet ved hjælp af boltning via flanger i enderne. Hver tårnsektion kan igen være sammensat af ét eller flere rørformede tårnsegmenter, der almindeligvis er dannet med en cirkulær tværsnitsfacon. De rørformede segmenter for hver tårnsektion kan have en højde på omkring 3 meter og er svejset til hinanden i et passende antal for at opnå den ønskede højde af tårnsektionen. De rørformede segmenter kan være cylindriske eller have en keglestubfacon og er fremstillet afflade stålplader, der er koldvalsede til den ønskede cylindriske eller koniske facon, og to korte sidekanter er svejset sammen med en vertikal stumpsøm.Large wind turbine towers are generally made of one or more tubular pipe sections. In the case where the tower is composed of more than one tower section, they are generally interconnected by bolting via flanges at the ends. Each tower section may in turn be composed of one or more tubular tower segments, generally formed with a circular cross-sectional shape. The tubular segments for each tower section may have a height of about 3 meters and are welded to each other in an appropriate number to achieve the desired height of the tower section. The tubular segments may be cylindrical or have a cone stub shape and are made of flat steel sheets which are cold rolled to the desired cylindrical or tapered shape and two short side edges are welded together with a vertical butt stitch.
I en nedre del af tårnet, nær et jord- eller vandniveau, er det almindeligvis forsynet med en åbning i form af en dør, der giver adgang til det indre af tårnet med henblik på reparation og vedligeholdelse af udstyret. For at kompensere for svækkelsen, der forårsages af døråbningen, er det almindelig praksis at forstærke området omkring døren på forskellige måder.In a lower part of the tower, near a ground or water level, it is usually provided with an opening in the form of a door which provides access to the interior of the tower for repair and maintenance of the equipment. In order to compensate for the impairment caused by the doorway, it is common practice to reinforce the area around the door in various ways.
Én måde til forstærkning af området omkring døren er beskrevet i WO 06/050723 og angår tilvejebringelse af et specielt dørafsnit af stål, der er forsynet med en døråbning og har samme bredde som stå-larkemnet, men som har en forøget tykkelse i forhold til stålarkemnet. Dørafsnittet samt stålarkemnet er koldvalset separat til den præcise buede form og er derefter svejset sammen ved hjælp af stødsamlinger. Det vil sige, i dette tilfælde vil det rørformede segment være forsynet med mindst to vertikale stumpsømme. Dørafsnittet kan fortrinsvis have en variabel tykkelse for at tilvejebringe et overgangsafsnit med en gradvist varierende vægtykkelse mellem dørafsnittet og resten af tårnsegmentet. En ulempe ved denne løsning er, at det er tidsforbrugende 2 2DK 2009 00200 U3 at fremstille et rørformet segment på denne måde på grund af flere fremstillingstrin og den udprægede svejsning, som er nødvendig.One way of reinforcing the area around the door is described in WO 06/050723 and relates to providing a special steel sectional door which is provided with a door opening and has the same width as the steel sheet, but which has an increased thickness relative to the steel sheet. . The door section as well as the steel sheet blank are cold rolled separately to the precise curved shape and are then welded together by shock joints. That is, in this case, the tubular segment will be provided with at least two vertical butt stitches. The door section may preferably have a variable thickness to provide a transition section with a gradually varying wall thickness between the door section and the rest of the tower segment. A disadvantage of this solution is that it is time consuming to produce a tubular segment in this way due to several manufacturing steps and the pronounced welding needed.
En anden måde til forstærkning af et tårnsegment forsynet med en døråbning er beskrevet i US 2007/0148004. I dette dokument skæres der en åbning i tårnsegmentet, hvor denne åbning er større end den faktiske dør. Efterfølgende indsættes et strukturelt element fremstillet af et svejsbart støbemateriale, såsom støbejern, i døråbningen og svejses til tårnsegmentet. Det strukturelle element er dannet som en ring med en ydre facon, der svarer til åbningen i tårnsegmentet, og en indre facon, der svarer til den respektive dør. Det strukturelle element har fortrinsvis en variabel tykkelse i tværsnit. Én ulempe ved et sådant tårnsegment er, at det er tidsforbrugende at placere det strukturelle element i døråbningen og svejse det til tårnsegmentet. Det kan derudover være problematisk at svejse valset stål og støbestål til hinanden, og et strukturelt element af støbestå! er også dyrt at fremstille.Another way of reinforcing a tower segment provided with a doorway is described in US 2007/0148004. In this document, an opening is cut in the tower segment where this opening is larger than the actual door. Subsequently, a structural element made of a weldable casting material, such as cast iron, is inserted into the doorway and welded to the tower segment. The structural element is formed as a ring with an outer shape corresponding to the opening in the tower segment and an inner shape corresponding to the respective door. The structural member preferably has a variable thickness in cross section. One disadvantage of such a tower segment is that it is time consuming to place the structural element in the doorway and weld it to the tower segment. In addition, it can be problematic to weld rolled steel and cast steel to each other, and a structural element of cast steel! is also expensive to manufacture.
I lyset af ovenstående er et formål med opfindelsen at tilvejebringe et tårnsegment samt et arkemne til fremstilling af et tårnsegment. Det er navnlig et formål at tilvejebringe et tårnsegment samt et arkemne til fremstilling af en tårnsektion, ved hjælp af hvilke en forstærkning omkring en åbning af tårnsegmentet kan laves let og billigt. I det mindste dette formål kan opnås ved hjælp af et tårnsegment og et arkemne ifølge henholdsvis krav 1 og 11.In view of the above, an object of the invention is to provide a tower segment as well as a sheet blank for producing a tower segment. In particular, it is an object to provide a tower segment as well as a sheet blank for producing a tower section by which a reinforcement around an opening of the tower segment can be made easily and inexpensively. At least this object can be achieved by means of a tower segment and a sheet blank according to claims 1 and 11 respectively.
Opfindelsen er i forlængelse heraf baseret på den indsigt, at dette formål kan opnås ved at danne tårnsegmentet af et stålarkemne, som er dannet ud i ét med et afsnit, som har en forstørret materialetykkelse. Arkemnet er dannet som en rektangel eller et aflangt ark med henholdsvis en længde- og en breddedimension med to lange kanter og to korte kanter og afsnittet med en forstørret materialetykkelse strækkende sig over bredden af arkemnet fra den ene lange kant til den anden. Afsnittet, som har en forstørret materialetykkelse, kan valgfrit være dannet tilstødende én af de korte kanter eller ved et mellemliggende afsnit af arkemnet.The invention is, by extension, based on the understanding that this object can be achieved by forming the tower segment of a steel sheet blank formed integrally with a section having an enlarged material thickness. The sheet blank is formed as a rectangle or oblong sheet having a longitudinal and a width dimension of two long edges and two short edges, respectively, and the section having an enlarged material thickness extending over the width of the sheet blank from one long edge to the other. The section, which has an enlarged material thickness, may optionally be formed adjacent one of the short edges or at an intermediate section of the sheet blank.
Et stålarkemne med et afsnit, som har en forstørret materialetykkelse, kan fortrinsvis være dannet ved hjælp af varmvalsning i et 3 3DK 2009 00200 U3 valseværk. Det er imidlertid ikke udelukket, at den forstørrede materialetykkelse kan være dannet pa andre passende måder.A steel sheet blank having a section having an enlarged material thickness may preferably be formed by means of hot rolling in a rolling mill 3 3DK 2009 00200 U3. However, it is not excluded that the enlarged material thickness may be formed in other suitable ways.
Efter dannelse af arkemnet med et afsnit med forstørret tykkelse krummes arkemnet til en ønsket facon ved at bøje arkemnet langs 5 dets længdedimension, således at de to korte kanter mødes. Ved svejsning af de to korte kanter til hinanden ved hjælp af en vertikal svejsesøm, fikseres faconen af tårnsegmentet. Tårnsegmentet er normalt dannet med et cirkulært tværsnit, men andre faconer, såsom et ovalt tværsnit, kan være tænkelige. Tårnsektionen kan derudover være dan-10 net som en cylindrisk facon, i hvilket tilfælde arkemnet er dannet præcist rektangulært eller i det mindste med de lange kanter samt de korte kanter i det væsentlige parallelle med hinanden eller for at danne en keglestub, i hvilket tilfælde de korte kanter ikke er parallelle med hinanden. Bøjningen af arkemnet til den ønskede facon kan fortrinsvis udfø-15 res ved hjælp af koldvaisning.After forming the sheet blank with an enlarged thickness section, the sheet blank is curved to a desired shape by bending the sheet blank along its longitudinal dimension so that the two short edges meet. By welding the two short edges to each other by means of a vertical welding seam, the shape of the tower segment is fixed. The tower segment is usually formed with a circular cross section, but other shapes, such as an oval cross section, may be conceivable. In addition, the tower section may be formed as a cylindrical shape, in which case the sheet member is formed precisely rectangular or at least with the long edges and the short edges substantially parallel to each other or to form a cone stub, in which case the short edges are not parallel to each other. The bending of the sheet blank to the desired shape can preferably be carried out by cold wetting.
Åbningen i det forstørrede materialeafsnit kan valgfrit være udformet i stålarkemnet, før det formgives til den rørformede form eller efter bøjning af arkemnet til den rørformede form. Skæringen af åbningen kan udføres på mange forskellige måder, såsom ved hjælp af skæ-20' rebrænding, laserskæring eiler vandstråleskæring.The opening in the enlarged material section may optionally be formed in the steel sheet before being shaped into the tubular shape or after bending the sheet to the tubular shape. The cutting of the aperture can be accomplished in many different ways, such as by cutting 20 're-firing, laser cutting or water jet cutting.
Afsnittet med forstørret tykkelse kan valgfrit være dannet sådan, at fortykkelsen vil være til stede på ydersiden, på indersiden eller på begge sider af væggen af den færdige tårnsektion. Det foretrækkes overordnet, at fortykkelsen vil befinde sig på indersiden, i hvilket tilfæl-25 de ydersideoverfladet af tårnsegmentet kan blive gjort flugtende med ydersideoverfladerne af tilstødende tårnsegmenter.The enlarged thickness section may optionally be formed such that the thickening will be present on the outside, on the inside or on both sides of the wall of the finished tower section. It is generally preferred that the thickening will be on the inside, in which case the outer surface of the tower segment may be flush with the outer surface of adjacent tower segments.
Afsnittet med forstørret tykkelse af tårnet kan for en enkelt døråbning dække en vinkelsektor på mellem 40 til 80°, fortrinsvis mellem 50 til 70° og mest foretrukket omkring 60° af omkredsen af tårn-30 segmentet. I forhold til arkemnet kan afsnittet med forstørret tykkelse være 10-20%, fortrinsvis 12-18% og mest foretrukket omkring 15% af den totale længde af arkemnet. Tårnet kan imidlertid omfatte mere end én åbning gennem kappevæggen. Ud over en døråbning, der tillader adgang for personale til det indre af tårnet, kan det f.eks. også omfatte 4 4DK 2009 00200 U3 åbninger til eksempelvis kabelgennemgang eller lignende. I sådanne tilfælde er det fordelagtigt at placere åbningerne tilstødende hinanden, og afsnittet med forstørret tykkelse kan under alle omstændigheder dække en vinkelsektor på op til 90° eller endda 180°. Afsnittet med forstørret tykkelse støder fortrinsvis på hver side op til en overgangszone med en gradvist ændrende tykkelse, således at en jævn overgang opnås mellem afsnittet med forstørret tykkelse og afsnittene af væggen, som har en almindelig materialetykkelse. Dette overgangsafsnit kan have en gradvist ændrende tykkelse fra 1:3 ti! 1:5 eller omkring 1:4 i forhold til tykkelsen i forhold til længden i den rundtgående retning af tårnsegmentet. Overfladen af overgangszonen må imidlertid ikke være flad, men kunne f.eks. være buet konvekst og/eller konkavt. En overgangszone kan være arrangeret ved hver sideværts side samt ved den øvre og den nedre side med henblik på jævn overgang også i forhold til vægtykkelserne af det øvre tårnsegment og en nedre monteringsbase.The enlarged thickness section of the tower can cover, for a single doorway, an angle sector of between 40 to 80 °, preferably between 50 to 70 ° and most preferably about 60 ° of the perimeter of the tower-30 segment. In relation to the sheet blank, the enlarged thickness section may be 10-20%, preferably 12-18%, and most preferably about 15% of the total length of the sheet blank. However, the tower may comprise more than one opening through the casing wall. In addition to a doorway that allows staff access to the interior of the tower, it can e.g. also include 4 4GB 2009 00200 U3 openings for example cable passage or the like. In such cases, it is advantageous to position the openings adjacent to each other, and the enlarged thickness section can in any case cover an angle sector of up to 90 ° or even 180 °. The enlarged thickness section preferably adjoins each side to a transition zone with a gradually changing thickness, so that a smooth transition is achieved between the enlarged thickness section and the sections of the wall having a regular thickness of material. This transition section may have a gradually changing thickness from 1: 3 ti! 1: 5 or about 1: 4 relative to the thickness relative to the length in the circumferential direction of the tower segment. However, the surface of the transition zone may not be flat, but could e.g. be curved convex and / or concave. A transition zone may be arranged at each lateral side as well as at the upper and lower sides for smooth transition also in relation to the wall thicknesses of the upper tower segment and a lower mounting base.
Ved hjælp af et arkemne og et tårnsegment ifølge opfindelsen er det muligt at lette arrangementet af en forstærkning i området omkring en åbning eller dør i tårnsegmentet i forhold til den kendte teknik. Forstærkningen arrangeres samtidig med dannelsen af arkemnet, hvilket har den virkning, at yderligere fremstillingstrin ikke behøver at blive udført for at opnå forstærkningen. Det eneste krav er en mere avanceret formgivning af arkemnet, f.eks. ved hjælp af varmvalsning. En sådan formgivning er imidlertid inden for mulighederne i den kendte teknik.By means of a sheet blank and a tower segment according to the invention, it is possible to facilitate the arrangement of a reinforcement in the area around an opening or door in the tower segment according to the prior art. The reinforcement is arranged simultaneously with the formation of the sheet blank, which has the effect that additional manufacturing steps do not need to be performed to obtain the reinforcement. The only requirement is a more advanced design of the sheet material, e.g. by means of hot rolling. However, such design is within the capabilities of the prior art.
Selv om opfindelsen herefter beskrives og illustreres i forhold tii en landbaseret vindturbine, skal det forstås, at opfindelsen lige såvel kunne anvendes til offshorevindturbiner.Although the invention is hereinafter described and illustrated in relation to a land-based wind turbine, it should be understood that the invention could equally well be applied to offshore wind turbines.
Andre formål, træk og fordele ved den foreliggende opfindelse vil fremgå af den følgende detaljerede beskrivelse, af de vedføjede krav samt af tegningen.Other objects, features and advantages of the present invention will become apparent from the following detailed description, the appended claims and the drawings.
Alle udtryk anvendt i kravene skal generelt forstås ifølge deres almindelige betydning inden for det tekniske område, medmindre det eksplicit er defineret på anden måde heri. Alle referencer til "et/en/-et/-en (element, indretning, komponent, midler, trin osv.)" skal forstås 5 5DK 2009 00200 U3 åbent som henvisende til mindst én af nævnte element, indretning, komponent, midler, trin osv., medmindre der eksplicit skrives andet. Trinnene af enhver fremgangsmåde beskrevet heri behøver ikke at udføres i den nøjagtige beskrevne rækkefølge, medmindre det eksplicit skrives.All terms used in the claims are generally to be understood according to their ordinary meaning in the art, unless explicitly defined otherwise herein. All references to "one (s) (element, device, component, means, steps, etc.)" are to be understood openly as referring to at least one of said element, device, component, means, steps, etc., unless explicitly written otherwise. The steps of any method described herein need not be carried out in the exact order described unless explicitly written.
Ovenstående samt yderligere formål, træk og fordele ved den foreliggende opfindelse vil blive bedre forstået ved hjælp af den følgende illustrative og ikke-begrænsende detaljerede beskrivelse af foretrukne udførelsesformer for den foreliggende opfindelse med henvisning til den vedføjede tegning, hvor ens henvisningstal anvendes til lignende elementer, hvor: fig. 1 diagrammatisk illustrerer en offshorevindturbine i et billede set forfra, fig. 2 diagrammatisk illustrerer en perspektivbillede af et tårn-segment ifølge opfindelsen, fig. 3 diagrammatisk illustrerer et billede set ovenfra af et arkemne til formgivning af et tårnsegment ifølge fig. 2, og fig. 4 diagrammatisk illustrerer en alternativ udførelsesform for et arkemne ifølge fig. 3.The foregoing and further objects, features and advantages of the present invention will be better understood by the following illustrative and non-limiting detailed description of preferred embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals are used for like elements. where: FIG. 1 diagrammatically illustrates an offshore wind turbine in a front view; FIG. 2 diagrammatically illustrates a perspective view of a tower segment according to the invention; FIG. 3 diagrammatically illustrates a top view of a sheet blank for forming a tower segment according to FIG. 2, and FIG. 4 diagrammatically illustrates an alternative embodiment of a blank according to FIG. Third
Der henvises først til fig. 1, hvor en landbaseret vindturbine er illustreret i et billede set forfra. I dette tilfælde er et tårn af vindturbinen placeret på en fundering 1, der befinder sig i en afstand underjordoverfladen 2. Overjordoverfladen omfatter vindturbinen en nedre tårnsektion 3, en øvre tårnsektion 4, en nacelle 5 og rotorblade 6, hvor den nedre tårnsektion 3 er forbundet til en monteringsbase 7, der er fastgjort til funderingen 1.Referring first to FIG. 1, where a land-based wind turbine is illustrated in a front view. In this case, a tower of the wind turbine is positioned on a foundation 1 located at a distance below the surface 2. The surface of the wind turbine comprises a lower tower section 3, an upper tower section 4, a nacelle 5 and rotor blades 6 where the lower tower section 3 is connected. to a mounting base 7 attached to the foundation 1.
Hver tårnsektion 3, 4 er rørformet med perifere vægge af stål og er sammensat af flere rørformede tårnsegmenter, der er svejset sammen ende ved ende. De er begge også en smule keglestubformede, hvor den nedre tårnsektion 3 er mere konisk end den øvre 4.Each tower section 3, 4 is tubular with steel peripheral walls and is composed of several tubular tower segments welded together end to end. They are both also slightly cone-shaped, with the lower tower section 3 being more tapered than the upper 4.
En kort afstand overjordoverfladen 2 er tårnet forsynet med en døråbning 8 gennem kappevæggen for at tillade adgang til tårnets indre. På indersiden er tårnet forsynet med ikke viste stiger, ved hjælp af hvilke det er muligt at nå nacellen 5 ved toppen med henblik på at ud- 6 6DK 2009 00200 U3 øve vedligeholdelse og reparation af udstyret.A short distance above the surface 2, the tower is provided with a doorway 8 through the casing wall to allow access to the interior of the tower. On the inside, the tower is equipped with ladders not shown, by means of which it is possible to reach the nacelle 5 at the top in order to practice maintenance and repair of the equipment.
Der refereres herefter til fig. 2-4 i kombination. I fig. 2 er der illustreret et nedre tirnsegment 9 af den nedre tårnsektion 3, omfattende døråbningen 8. For at forstærke tårnsegmentet og kompensere for svækkelsen, som forårsages af åbningen, der er lavet gennem kappevæggen 10, er tårnsegmentet dannet med et afsnit 11, som har en forstørret materialetykkelse i området omkring åbningen. Ifølge opfindelsen er afsnittet 11 med forstørret tykkelse dannet integreret med resten af tårnsegmentet 9 som ét enhedsstykke, det vil sige, der anvendes et enkelt stålark til hele segmentet. Mere nøjagtigt er tårnsegmentet fremstillet af et stålarkemne 12, som er illustreret set ovenfra af arkemnet i fig. 3, og som er varmvalset i et valseværk for at have et afsnit 11 med forstørret tykkelse, der buler udad ved den ene side af arkemnet. Under formgivningen af tårnsegmentet 9 bøjes arkemnet 12 ved hjælp af koldvalsning til en rørformet facon, se fig. 2, og to korte kanter 13, 13' af arkemnet er svejset til hinanden for at danne en vertikal svejsesøm 14. To lange kanter 15, 15' vil danne endekanterne af det færdige tårnsegment 9, som skal svejses til tilstødende tårnsegmenter med henblik på dannelse af den nedre tårnsektion 3.Referring now to FIG. 2-4 in combination. In FIG. 2, a lower tower segment 9 of the lower tower section 3 is illustrated, comprising the door opening 8. In order to enhance the tower segment and compensate for the weakening caused by the opening made through the casing wall 10, the tower segment is formed with a section 11 which has a enlarged material thickness in the area around the opening. According to the invention, the enlarged thickness section 11 is formed integrally with the rest of the tower segment 9 as one unit piece, that is, a single sheet of steel is used for the entire segment. More precisely, the tower segment is made of a steel sheet blank 12, which is illustrated from above by the sheet blank of FIG. 3, and which is hot-rolled in a rolling mill to have a section 11 of enlarged thickness bulging outwardly on one side of the sheet blank. During the shaping of the tower segment 9, sheet 12 is bent by cold rolling to a tubular shape, see FIG. 2, and two short edges 13, 13 'of the sheet blank are welded to each other to form a vertical weld seam 14. Two long edges 15, 15' will form the end edges of the finished tower segment 9 to be welded to adjacent tower segments for formation. of the lower tower section 3.
I udførelsesformen illustreret i fig. 2 er arkemnet buet, således at afsnittet 11 med forstørret tykkelse buler udad. Det skal imidlertid forstås, at arkemnet 12 også kan krummes således, at afsnittet med forstørret tykkelse buler indad. Dette kunne være en fordel, siden det her vil være muligt at svejse tilstødende tårnsegmenter til en øvre og, når det er passende, en nedre kant af tårnsegmentet 9, som er forsynet med åbningen 8, således at de ydre overflader af tårnsegmenterne vil flugte med hinanden.In the embodiment illustrated in FIG. 2, the sheet blank is curved so that the enlarged thickness section 11 bulges outward. However, it should be understood that the sheet blank 12 can also be curved such that the enlarged thickness section bulges inward. This could be an advantage since it will be possible here to weld adjacent tower segments to an upper and, where appropriate, a lower edge of the tower segment 9 provided with the aperture 8 so that the outer surfaces of the tower segments will align with each other.
For at opnå en blød overgang mellem afsnittene af arkemnet og tårnsegmentet, som har en almindelig tykkelse TI, og afsnittet 11 med forstørret tykkelse, som har en forstørret tykkelse T2, er der på hver side af afsnittet 11 med forstørret tykkelse dannet en overgangszone 16, som har en gradvist sig ændrende tykkelse. På denne måde undgås en pludselig tykkelsesændring, som kunne give anledning til en spændingsforøgelse, som kunne forårsage et brud under tung last. En over- 7 7DK 2009 00200 U3 gangszone 17 ved en gradvist sig ændrende tykkelse er også dannet på den øvre samt den nedre side af afsnittet 11 med forstørret tykkelse tilstødende de to lange kanter 15, 115'. Dette tillader en jævn overgang også i forhold til vægtykkelserne af et ikke vist øvre tårnsegment og den nedre monteringsbase 7. Materialetykkelsen af overgangszonerne 16 og 17 ændres gradvist med 1:3 til 1:5 eller fortrinsvis omkring 1:4 i forhold til tykkelsesændringen i forhold til længden i den rundtgående retning af tårnsegmentet.In order to achieve a smooth transition between the sections of the sheet blank and the tower segment having a regular thickness T1 and the enlarged thickness section 11 having an enlarged thickness T2, a transition zone 16 is formed on each side of the enlarged thickness section 11. which has a gradually changing thickness. In this way, a sudden change of thickness is avoided which could give rise to a voltage increase which could cause a break under heavy load. An overpass zone 17 at a gradually changing thickness is also formed on the upper as well as the lower side of the section 11 with enlarged thickness adjacent the two long edges 15, 115 '. This allows a smooth transition also in relation to the wall thicknesses of an upper tower segment not shown and the lower mounting base 7. The material thickness of the transition zones 16 and 17 is gradually changed by 1: 3 to 1: 5 or preferably about 1: 4 in relation to the thickness change in proportion. to the length in the circumferential direction of the tower segment.
Ifølge en alternativ udførelsesform, som er illustreret i fig. 4, kan afsnittet 11 med forstørret tykkelse være fremstillet til at bule udad samt indad. I dette tilfælde vil overgangszoner 16 og 17 blive dannet både ved den indre og den ydre overflade af tårnsegmentet. En fordel ved et sådant design er, at overgangszonerne 16 og 17 kan gøres kortere med fastholdt hældning af tårnsegmentoverfladen.According to an alternative embodiment illustrated in FIG. 4, the enlarged thickness section 11 can be made to bulge outwards and inwards. In this case, transition zones 16 and 17 will be formed at both the inner and outer surfaces of the tower segment. An advantage of such a design is that the transition zones 16 and 17 can be made shorter with a fixed inclination of the tower segment surface.
I udførelsesformerne ifølge 3 og 4 er afsnittet 11 med forstørret tykkelse placeret i et mellemliggende afsnit, mere præcist i midten af hvert stålarkemne 12. Det skal imidlertid forstås, at afsnittet med forstørret tykkelse også kunne være placeret usymmetrisk i forhold til arkemnet, f.eks. tilstødende en af de korte kanter 13, 13'.In the embodiments of 3 and 4, the enlarged thickness section 11 is placed in an intermediate section, more precisely in the center of each steel sheet 12. However, it should be understood that the enlarged thickness section may also be located asymmetrically with respect to the sheet blank, e.g. . adjacent one of the short edges 13, 13 '.
Den foreliggende opfindelse kan udøves ved hjælp af én eller flere af de følgende fremgangsmåder:The present invention may be practiced by one or more of the following methods:
Fremgangsmåde 1. En fremgangsmåde til fremstilling af et tårnsegment af typen med en rørformet form med en perifer væg og omfattende en åbning til at tillade adgang til det indre af tårnet, omfattende trinnene: at danne et arkemne i ét enhedsstykke, således at det vil have en forstørret materialetykkelse i et afsnit, der strækker sig fra den ene lange kant til den anden af arkemnet, at skære en åbning gennem væggen i afsnittet, som har en forstørret tykkelse, at formgive arkemnet til en rørformet facon, således at to korte kanter af arkemnet placeres tilstødende hinanden, og at svejse de to korte kanter af arkemnet sammen. Fremgangsmåde 2. En fremgangsmåde omfattende trinnene DK 2009 00200 U3 8 ifølge fremgangsmåde 1 og yderligere omfattende et trin til formgivning af arkemnet ved hjælp af valsning.Process 1. A method of manufacturing a tower segment of the tubular shape having a peripheral wall and comprising an opening to allow access to the interior of the tower, comprising the steps of: forming a sheet blank in one unit piece so that it will have an enlarged material thickness in a section extending from one long edge to the other of the sheet member, cutting an aperture through the wall of the section having an enlarged thickness, to shape the sheet sheet into a tubular shape so that two short edges of the sheet blank is placed adjacent to each other, and to weld the two short edges of the sheet blank together. Method 2. A method comprising the steps of DK 2009 00200 U3 8 according to method 1 and further comprising a step of shaping the sheet blank by rolling.
Fremgangsmåde 3. En fremgangsmåde svarende til den foregående fremgangsmåde 2 og omfattende det yderligere trin formgivning af 5 arkemnet ved hjælp af koldvalsning.Method 3. A method similar to the preceding method 2 and comprising the further step shaping of the sheet 5 by cold rolling.
Fremgangsmåde 4. En fremgangsmåde ifølge et hvilket som helst af de forudgående fremgangsmåder 1-3 omfattende det yderligere trin formgivning af arkemnet med en overgangszone mellem afsnittet med forstørret tykkelse og et afsnit en almindelig materialetykkelse, 10 hvor overgangszonen har en gradvist ændrende tykkelse.Method 4. A method according to any one of the preceding methods 1-3 comprising the further step of shaping the sheet blank with a transition zone between the enlarged thickness section and a section of ordinary material thickness, wherein the transition zone has a gradually changing thickness.
Opfindelsen er ovenfor hovedsageligt blevet beskrevet med henvisning til enkelte udførelsesformer. Som det let kan forstås af en fagmand, er andre udførelsesformer end de, som er beskrevet ovenfor, imidlertid tilsvarende mulige inden for bredden af opfindelsen som defi-15 neret af de vedføjede krav.The invention has been described above mainly with reference to some embodiments. However, as will be readily appreciated by those skilled in the art, embodiments other than those described above are similarly possible within the scope of the invention as defined by the appended claims.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKBA200900200U DK200900200U3 (en) | 2008-12-04 | 2009-12-04 | Tower segment and sheet item for a tower segment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11982508P | 2008-12-04 | 2008-12-04 | |
| DKPA200801710 | 2008-12-04 | ||
| DKBA200900200U DK200900200U3 (en) | 2008-12-04 | 2009-12-04 | Tower segment and sheet item for a tower segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK200900200U3 true DK200900200U3 (en) | 2010-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKBA200900200U DK200900200U3 (en) | 2008-12-04 | 2009-12-04 | Tower segment and sheet item for a tower segment |
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| Country | Link |
|---|---|
| CN (1) | CN201696236U (en) |
| DE (1) | DE202009015675U1 (en) |
| DK (1) | DK200900200U3 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2381091B2 (en) | 2010-04-21 | 2019-09-18 | Siemens Gamesa Renewable Energy A/S | Wall section for a wind turbine tower and wind turbine tower |
| US8171674B2 (en) * | 2010-12-16 | 2012-05-08 | General Electric Company | Doorway for a wind turbine tower |
| EP2562419A1 (en) | 2011-08-26 | 2013-02-27 | Nordex Energy GmbH | Tower for a wind energy facility |
| EP2840259A1 (en) * | 2013-08-23 | 2015-02-25 | Alstom Renovables España, S.L. | Tower portion |
| DE102013016604A1 (en) | 2013-10-07 | 2015-04-09 | EcoEnterprises GmbH | Steel tube tower of a wind turbine, as well as methods for manufacturing and assembling the tower components |
| JP6145055B2 (en) * | 2014-02-28 | 2017-06-07 | 三菱重工業株式会社 | Wind turbine tower and wind power generator |
| EP2924282B1 (en) * | 2014-03-25 | 2020-04-29 | Siemens Gamesa Renewable Energy A/S | Reinforcement of a wind turbine tower |
| DE102014011735A1 (en) * | 2014-08-06 | 2016-02-11 | EcoEnterprises GmbH | Supporting elements of a supporting structure, associated fasteners, and apparatus and methods for making the same |
| CN109973321B (en) * | 2017-12-27 | 2020-05-05 | 江苏金风科技有限公司 | Tower door opening and tower of wind generating set and wind generating set |
| CN112648148A (en) * | 2020-12-30 | 2021-04-13 | 华能国际电力股份有限公司江苏清洁能源分公司 | Wind turbine generator, circular tower frame door opening structure of wind turbine generator and manufacturing method |
| CN115875209A (en) * | 2021-09-29 | 2023-03-31 | 新疆金风科技股份有限公司 | Shell ring, pylon and wind generating set |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10152550A1 (en) | 2001-10-24 | 2003-05-08 | Gen Electric | module |
| DE602004027768D1 (en) | 2004-11-10 | 2010-07-29 | Vestas Wind Sys As | TOWER PART FOR A WIND TURBINE, METHOD FOR PRODUCING A TOWER PART AND USES THEREOF |
-
2009
- 2009-12-01 DE DE202009015675U patent/DE202009015675U1/en not_active Expired - Lifetime
- 2009-12-04 DK DKBA200900200U patent/DK200900200U3/en not_active IP Right Cessation
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| CN201696236U (en) | 2011-01-05 |
| DE202009015675U1 (en) | 2010-03-25 |
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