US20080256892A1 - Wind energy plant tower - Google Patents

Wind energy plant tower Download PDF

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Publication number
US20080256892A1
US20080256892A1 US11/775,972 US77597207A US2008256892A1 US 20080256892 A1 US20080256892 A1 US 20080256892A1 US 77597207 A US77597207 A US 77597207A US 2008256892 A1 US2008256892 A1 US 2008256892A1
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US
United States
Prior art keywords
tower
section
border
wind energy
wall
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.)
Abandoned
Application number
US11/775,972
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English (en)
Inventor
Michael Franke
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.)
Nordex Energy SE and Co KG
Original Assignee
Nordex Energy SE and Co KG
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 Nordex Energy SE and Co KG filed Critical Nordex Energy SE and Co KG
Assigned to NORDEX ENERGY GMBH reassignment NORDEX ENERGY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRANKE, MICHAEL
Publication of US20080256892A1 publication Critical patent/US20080256892A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • 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 is related to a wind energy plant tower with a load-bearing tower wall, which has a circulating outer periphery and consists of a plurality of wall sections, which each one have one centre section and two border sections running in the longitudinal direction of the tower, which are provided with a plurality of connection bores.
  • towers for wind energy plants are known in the state of the art, which are subdivided into plural tower segments in the longitudinal direction. It is also known to subdivide the load-bearing tower wall into a plurality of wall sections, which result in a tower segment when they are assembled together.
  • a wind energy plant tower which consists of a plurality of cylindrical or slightly conical tower segments, respectively.
  • Each tower segment is composed of three wall sections in this.
  • Each wall section has one flange at a time on its vertically running edges, which is provided with a plurality of connection bores.
  • Each flange consists of a steel strip, which is connected with a wall section on the inner side of the wall section in the vicinity of the vertically running edge thereof, and extends from there in the radial direction, in an approximately right angle to the adjacent wall section.
  • the two flanges of two neighbouring wall sections are screwed together with each other,
  • the horizontally running edges of the wall sections are also provided with a flange, which has the shape of a ring section and extends also into the interior of the tower. Via these flanges, tower segments arranged on top of each other can be screwed together with each other.
  • a further tower for a wind energy plant has become known, the tower wall of which is composed of a plurality of wall sections.
  • Each wall section has an essentially four-cornered shape.
  • the border sections running in the vertical direction of the wall sections are offset into the interior of the tower in an angle of somewhat more than 90°, so that they form a flange. Via corresponding connection bores in these flanges, two neighbouring wall sections are screwed together with each other.
  • the horizontally running edges of the essentially four-cornered border sections have no comparable flange. Instead, two wall sections arranged on top of each other are connected with each other by separate joining pieces. The joining pieces are fixed on the vertically running flanges of the wall sections. In doing so, it is also conceived to compose the wall sections offset to each other in the vertical direction.
  • the wind energy plant tower according to the present invention has a load-bearing tower wall, which has a circulating outer periphery and consists of a plurality of wall sections, which each one have one centre section and two border sections running in the longitudinal direction of the tower, which are provided with a plurality of connection bores, wherein the surfaces defined by the border sections run along the outer periphery or in a constant distance to the same, and the connection bores are aligned transversely to the outer periphery.
  • the wall sections form each one a separate structural component at a time and are connected to each other via the connection bores when the tower is installed.
  • the wall sections are made of metal, preferably steel.
  • the border sections with the connection bores define each at a time a surface which runs along the outer periphery of the tower wall or in a constant distance to it.
  • the border sections are not realised as flanges which project out of the surface formed by the tower wall like in the state of the art.
  • the border sections are not more offset against the centre sections than is preset by the desired outer periphery of the tower wall. Instead, the border sections form a uniform lateral continuation of the centre sections.
  • the border sections run “parallel” to the outer periphery, i.e.
  • the border sections form an integral constituent part of the wall sections and the tower wall. Furthermore, the production of the wall sections is significantly simplified, because the wall sections do not have to be provided with a flange. Furthermore, the wall sections become more compact because there are no parts projecting out of the surface and through this, they can be transported more simply, as the case may be. The danger to damage a flange in the transportation is reduced.
  • connection bores are aligned transversely to the outer periphery and through this also transversely to the surface formed by the respective border sections.
  • the connection bores are aligned vertically to the periphery.
  • they run essentially in the radial direction, in contrast to the connection boxes of a conventional flange connection, in which the connection bores are aligned tangentially.
  • connection of the tower segments to the complete tower can be made in an arbitrary manner, in principle.
  • the tower segments may be also connected with each other by welding.
  • the tower has a circular or polygonal cross section.
  • the wall sections including the border sections form cylindrical or conical partial surfaces, which have a uniform convexity.
  • the wall sections have plane surfaces, which can be offset corresponding to the multi-cornered cross section. The wall sections can then be made through edging of plane plates, which is particularly simple.
  • connection bores are arranged in rows which run in the longitudinal direction of the tower.
  • connection bores of a border section are spaced apart from each other in the perimeter direction of the tower.
  • two rows of connection bores running in the longitudinal direction of the tower can be arranged in different distances from the vertically running edges of the border sections, Such a regular arrangement of the connection bores in a different distance from the edge of the border section permits a particularly stable connection.
  • a first border section of a first wall section and a second border section of a second wall section overlap each other and a plurality of connection elements are provided, which are each at a time lead through one connection bore of the first border section and through one connection bore of the second border section,
  • one of the border sections forms a joint piece, which overlaps the other border section.
  • the connection elements are lead through both border sections and thus they produce a firm connection between the two border sections.
  • the connection elements may be rivets, threaded bolts with a nut or threaded bolts which are screwed into a thread without a nut, for instance.
  • the two wall sections can be directly connected with each other.
  • a first border section of a first wall section and a second, neighbouring border section of a second wall section are arranged side by side and are connected with each other through a joint piece which has connection bores and overlaps the first border section and the second border section.
  • the joint piece is a separate part, like a steel ribbon for instance, which is connected by means of suitable connection elements with the connection bores of the two border sections via its own connection bores. Even though a separate component part forms the joint piece in this embodiment, the same can have a very simple form, like the wall sections.
  • the first border section and the second border section are spaced apart from each other in the perimeter direction.
  • the distance between the two border sections is determined by the realisation of the joint piece and the positioning of the connection bores in the border sections and the joint piece.
  • first border section and the second border section are immediately adjacent in the perimeter direction. Through the connection by a separate joint piece, the wall sections are fixed in this adjacent position.
  • the joint piece is arranged on the outer side of the tower. Through this, the edges of the border sections are protected against weather influences by the joint piece.
  • the joint piece extends across a border section of a wall section in the longitudinal direction of the tower, which has a plurality of connection bores.
  • a smaller number of joint pieces are needed in order to connect the wall sections with each other. This may facilitate the installation, because less joint pieces have to be positioned.
  • Each joint piece can be fixed with a few number of connection elements at first. This simplifies the insertion of the following connection elements.
  • the joint piece extends across the overall length of a wall section in the longitudinal direction of the tower. Through this, exactly one joint piece can be assigned to each wall section, which can be occasionally pre-mounted and transported together with the wall section. Furthermore, the number of seam positions between joint pieces arranged on top of each other is reduced.
  • an additional joint piece is arranged on the inner side of the tower, which has connection bores and which overlaps the first border section and the second border section.
  • each border section is kept between two joint pieces, which results in a particularly stable connection.
  • connection bores in the joint piece on the outer side of the tower have threads, which co-operate with a threaded bolt which is lead from the inner side of the tower through a connection bore of a border section.
  • the threaded bolt can be directly screwed into the joint piece. Through this, the installation is significantly facilitated, because no nut has to be attached on the outer side of the tower, which would be necessary otherwise. Instead, the threaded bolt can be introduced from out the inner side of the tower and screwed together with the joint piece, without having to hold a nut on the outer side of the tower at the same time. Accordingly, the screw pre-tension can be monitored for maintenance purposes particularly simply from out the inner side of the tower. As an additional advantage, there is a more even surface of the outer wall.
  • the joint piece has a greater thickness than the wall sections.
  • the screw-in length necessary for a safe screwing can be obtained in the inside-threaded connection bores in the joint piece.
  • the thickness of the joint piece is at least 1.2 times the diameter of a connection bore.
  • the tower has a plurality of tower segments in the longitudinal direction, wherein the wall sections each extend across the length of one tower segment at a time.
  • the wall sections each extend across the length of one tower segment at a time.
  • all the wall sections of the tower or all the wall sections of a tower segment have the same shape and dimension.
  • each tower segment may consist of three, four, five or more uniform wall sections.
  • the border sections of a wall section extend across the whole length of the wall section in the longitudinal direction of the tower.
  • the border sections can also be formed only sectionwise.
  • the extension across the whole length of the wall sections simplifies the manufacture of the wall sections and results in a more uniform connection with higher staunchness between the neighbouring wall sections.
  • FIG. 1 shows a wind energy plant with a tower, composed of wall sections according to the present invention, in a simplified top view;
  • FIG. 2 shows a wall section of the tower from FIG. 1 , in a perspective view
  • FIG. 3 shows a cut-out of a cross section of a tower wall according to the present invention running in a horizontal plane of the tower, with two border sections overlapping each other;
  • FIG. 4 shows a cut-out of a cross section through a tower wall according to the present invention running in a horizontal plane, with two border sections arranged in a distance from each other, which are connected with each other via two separate joint pieces;
  • FIG. 5 shows a cut-out of a cross section running in a horizontal plane of the tower, with two border sections arranged in a distance from each other, which are connected with each other with the aid of a joint piece with threaded bores;
  • FIG. 6 shows a cut-out of a cross section running in a horizontal plane of a polygonal tower, with two border sections arranged in a distance from each other, which are connected with each other with the aid of a joint piece with threaded bores.
  • a wind energy plant tower 10 which is anchored in a foundation 12 and carries a nacelle 14 of the wind energy plant. On the nacelle, the indicated rotor 16 of the wind energy plant is fastened.
  • the tower 10 is composed of a plurality of wall sections 18 .
  • an equal number of wall sections 18 constitute one of three tower segments at a time, which are arranged on top of each other. In this, each wall section extends across the height of one tower segment in the vertical direction.
  • a greater or a smaller number of tower segments can also be provided. It is also possible to compose the tower segments located on different heights from a different number of wall sections 18 .
  • FIG. 2 An individual wall section 18 is depicted in FIG. 2 in a perspective view.
  • the wall section 18 consists of steel.
  • the wall section 18 has the shape of a cone surface segment with edges 22 linearly running in the vertical direction.
  • one border section 24 extends at a time, which has a plurality of connection bores 26 , arranged on top of each other in a row.
  • a centre section 20 of the wall section 18 Between the two border sections 24 is located a centre section 20 of the wall section 18 .
  • the wall section 18 consists of one single steel plate, curved corresponding to the shape of the tower, which forms the centre section 20 as well as the border sections 24 .
  • the centre section 20 passes over directly into the border sections 24 .
  • Wall sections 18 arranged side by side can be connected with each other, in different ways.
  • a particularly simple solution is depicted in FIG. 3 .
  • a first wall section 30 has a border section 32 , which has two connection bores 36 arranged in different distances from the edge 34 of the first border section 32 .
  • the second wall section 40 has also a border section 42 with two connection bores 46 in different distances from the edge 44 of the border section 42 .
  • the two border sections 32 and 42 overlap each other and are screwed together with each other by two threaded bolts 48 with nuts 50 arranged on the outer side of the tower wall.
  • the wall section 40 with border section 42 and the wall section 30 with border section 32 describe a circle each at a time in the depicted cross section.
  • the outer periphery of the tower wall is constituted by the surface of the wall section 40 , situated outside with respect to the tower wall, and of the border section 42 , as well as by the outside-situated surface of the wall section 30 .
  • the border section 42 runs directly along the outer periphery, while the inside-situated border section 32 is arranged in a constant distance to it.
  • FIG. 4 shows another example of realisation.
  • the two wall sections 60 , 70 with their border sections 62 , 72 are not arranged overlapping but in a distance from each other.
  • Each border section has one bore 64 , 74 at a time.
  • a joint piece 80 located on the outer side of the tower wall consists of a steel strip, which runs along the border sections 62 and 72 and which overlaps these two border sections.
  • the joint piece 80 is provided with two connection bores 84 , which are aligned matching the connection bores 64 , 74 of the border sections.
  • a second joint piece 82 is located on the inner side of the tower wall and overlaps the border sections 62 , 72 .
  • connection bores 86 which are aligned towards the connection bores 64 , 74 of the border sections.
  • Two threaded bolts 88 extend through one connection bore 86 of the inner joint piece 82 , one connection bore 62 or 74 , respectively, of a border section and one connection bore 84 of the outer joint piece 80 at a time.
  • the threaded bolts 88 are screwed together on the outer side of the tower wall with one nut 90 at a time. Through this, the wall sections 62 , 72 are clamped in between the two joint pieces 80 , 82 .
  • two neighbouring wall sections 100 and 110 are arranged in a distance from each other, like in the realisation example of FIG. 4 .
  • the corresponding wall sections 102 , 112 are screwed together with an outer joint piece 116 .
  • the outer joint piece has two connection bores 118 , directed towards the connection bores 104 , 114 of the border sections 102 , 112 , which are each provided with a thread.
  • Two threaded bolts are introduced from out the inner side of the tower wall through a connection bore 104 or 114 of a border section 102 or 112 , respectively, into a connection bore 118 of the outer joint piece 116 and fixedly screwed up there.
  • a fixed connection of the two wall sections is also achieved.
  • no nut has to be arranged on the outer side of the tower wall and to be fixed in the installation.
  • a particularly even outer wall is obtained.
  • FIG. 6 shows an additional realisation example.
  • the same reference signs are used as in the FIG. 5 , when the indicated parts correspond to each other.
  • the joint piece 116 is located on the outer side of the tower wall constituted by the wall sections 100 , 110 .
  • the tower wall has a polygonal cross section and is chamfered in each of the regions designated with 122 .
  • Threaded bolts 120 are lead through one connection bore 104 , 114 in a border section of a wall section at a time, and are screwed into an interior thread in the connection bores 118 of the joint piece 116 .
  • the thickness of the joint piece 116 is dimensioned such that a minimum screw-in length of the threaded bolts 120 , which amounts to 1.2 times the diameter of the threaded bore, is reached or exceeded, In the shown example, the thickness of the connection joint piece 116 is significantly greater than the wall thickness of the wall sections 100 , 110 .
  • any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent claim if such multiple dependent format is an accepted format within the jurisdiction (e.g. each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims).
  • each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims.
  • the following dependent claims should each be also taken as alternatively written in each singly dependent claim format which creates a dependency from a prior antecedent-possessing claim other than the specific claim listed in such dependent claim below.
US11/775,972 2007-04-17 2007-07-11 Wind energy plant tower Abandoned US20080256892A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018025.1 2007-04-17
DE102007018025A DE102007018025A1 (de) 2007-04-17 2007-04-17 Windenergieanlagenturm

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US20080308696A1 (en) * 2005-11-24 2008-12-18 Jonas Kristensen Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
US20100126079A1 (en) * 2008-11-27 2010-05-27 Vestas Wind Systems A/S Wind power plant and a method for assembling the same
WO2011110234A1 (en) * 2010-03-12 2011-09-15 Siemens Aktiengesellschaft Wall portion for a tower of a wind turbine
CN102207061A (zh) * 2010-03-31 2011-10-05 西门子公司 风力涡轮机设施
US8209913B2 (en) * 2011-02-01 2012-07-03 Mitsubishi Heavy Industries, Ltd. Tubular structure and wind turbine generator
CN102606416A (zh) * 2011-01-19 2012-07-25 通用电气公司 模块化塔架及其组装方法
EP2525079A1 (de) 2011-05-16 2012-11-21 Siemens Aktiengesellschaft Verfahren zur Herstellung der Windturbinenturmsegmenten und Windturbinenturm
DE112010005382T5 (de) 2010-03-12 2013-01-03 Siemens Aktiengesellschaft Wandabschnitt für einen Windkraftanlagenturm
US8393118B2 (en) 2011-12-22 2013-03-12 General Electric Company Friction damping bolt connection for a wind tower lattice structure
US20130084177A1 (en) * 2009-11-25 2013-04-04 Uffe Eriksen Nacelle shell structure, lock labyrinth and wind turbine
RU2500866C1 (ru) * 2012-05-11 2013-12-10 Общество с ограниченной ответственностью "ВЛ-строй" Стойка опоры воздушной линии электропередач
US20140345218A1 (en) * 2011-08-30 2014-11-27 Vestas Wind Systems A/S Transition structure for a wind turbine tower
US8915043B2 (en) 2011-05-25 2014-12-23 General Electric Company Bolt connection for a wind tower lattice structure
US9091098B2 (en) * 2010-07-13 2015-07-28 Andresen Towers A/S Method of assembling a tubular building structure by using screw sockets
US20150247334A1 (en) * 2013-12-18 2015-09-03 General Electric Company Lattice tower covering for a wind turbine
US9249597B2 (en) * 2010-07-12 2016-02-02 Siemens Aktiengesellschaft Tower construction
RU168521U1 (ru) * 2016-10-11 2017-02-07 Акционерное Общество "Газпром Электрогаз" Стойка опоры линии электропередачи
US10041269B2 (en) * 2015-04-02 2018-08-07 Arcelormittal Wind turbine tower section, wind turbine tower and assembly method
US10053886B2 (en) * 2016-11-29 2018-08-21 General Electric Company Connection assembly for wind turbine tower
US10113327B2 (en) * 2014-12-01 2018-10-30 Lafarge Section of concrete
US10273705B2 (en) 2016-12-22 2019-04-30 Nordex Energy Gmbh Steel tower for a wind turbine and a method for producing the tower
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EP2545231B1 (de) * 2010-05-25 2015-07-29 Siemens Aktiengesellschaft Eckverbindung, insbesondere für einen windturbinenturm
DE102011054567A1 (de) * 2011-10-18 2013-04-18 SIAG Engineering GmbH Turmbauwerk, Element zur Herstellung des Turmbauwerk und Verfahren zur Errichtung des Turmbauwerks
DE102012015489A1 (de) 2012-08-04 2014-02-06 E.N.O. Energy Systems Gmbh Verfahren zum Errichten eines Turmes aus Stahl einer Windenergieanlage und Turm aus Stahl für eine Windenergieanlage
DE102015110344A1 (de) 2015-06-26 2016-12-29 Eno Energy Systems Gmbh Teilstück einer Turmsektion, ein Turm und ein Verfahren zum Herstellen eines Teilstücks einer Turmsektion
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Cited By (33)

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Publication number Priority date Publication date Assignee Title
US20080308696A1 (en) * 2005-11-24 2008-12-18 Jonas Kristensen Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
US8225576B2 (en) * 2005-11-24 2012-07-24 Vestas Wind Systems A/S Wind turbine tower, connection means for assembling a wind turbine tower and methods thereof
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