WO2024068720A1 - Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower - Google Patents

Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower Download PDF

Info

Publication number
WO2024068720A1
WO2024068720A1 PCT/EP2023/076684 EP2023076684W WO2024068720A1 WO 2024068720 A1 WO2024068720 A1 WO 2024068720A1 EP 2023076684 W EP2023076684 W EP 2023076684W WO 2024068720 A1 WO2024068720 A1 WO 2024068720A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
tower
concrete
adapter
section
Prior art date
Application number
PCT/EP2023/076684
Other languages
French (fr)
Inventor
Iván García Maestre
Iñigo RUBIO GUILLEN
Jon Ongay Ongay
Aitor Garduño Garduño
Miguel Gonzalez
Arlabán ARLABÁN
Original Assignee
Nordex Energy Se & Co. Kg
Nordex Energy Spain, S.A.U.
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
Priority claimed from EP22382884.9A external-priority patent/EP4345290A1/en
Priority claimed from EP22382885.6A external-priority patent/EP4345291A1/en
Priority claimed from EP23382632.0A external-priority patent/EP4345296A1/en
Application filed by Nordex Energy Se & Co. Kg, Nordex Energy Spain, S.A.U. filed Critical Nordex Energy Se & Co. Kg
Publication of WO2024068720A1 publication Critical patent/WO2024068720A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/201—Towers
    • F03D13/205—Connection means, e.g. joints between segments
    • 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
    • E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
    • 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
    • E04H12/16—Prestressed 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
    • F03D13/20—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
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • 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

Definitions

  • the object of the invention is a concrete segment of a section of a tower of a wind turbine and an adapter of a tower of a wind turbine.
  • the invention also relates to a wind turbine comprising a tower which in turn comprises the concrete segment of the section and/or the adapter.
  • the wind turbines comprise a tower, a nacelle which houses the electrical generator and a rotor formed in turn by at least two blades.
  • the tower of the wind turbine supports the nacelle and the rotor.
  • Large wind turbines have steel, lattice, or reinforced concrete towers or even mixed-type towers, the latter comprising sections of different materials, for example, a lower section of concrete and an upper section of steel or lattice.
  • the tower Due to the height of the wind turbines, the tower has to be divided into several annular sections which are stacked during the wind turbine assembly stage thus forming the full height of the tower. Dividing the tower into sections has the advantage that each section has a size such that its transport by road or rail is easier.
  • the towers for wind turbines being of the kind of “concrete-steel hybrid” towers comprising a first tower section comprising at least two concrete segments and further comprising a second tower section made of steel, the tower further comprising an adapter for connecting the two tower sections, and the towers for wind turbines being of the kind of “full-concrete” towers comprising an adapter disposed in the upper part of the upper concrete tower section and below a wind turbine component, the wind turbine component being preferably the yaw bearing of the nacelle.
  • the adapter comprises an annular concrete element and a steel element that has at least one annular flange, wherein the flange covers an upper surface of the concrete element of the adapter in installation position. Consequently, this adapter consists of concrete and steel, in which case the steel element is cast directly with the concrete element of the adapter.
  • the annular flange of the steel element is fully grouted in the concrete without air inclusions.
  • the steel element with an annular flange is initially provided for building the adapter, which is installed headlong in a ring-shaped formwork. Afterwards, concrete is placed in the formwork and as a result of that, the annular concrete element of the adapter can be made.
  • the concrete is placed directly on the underside of the flange so that, in the finished adapter, the flange is fully grouted establishing a connection between the concrete element and the steel element of the adapter.
  • the adapter is made entirely of steel, and a grout layer must be disposed between the adapter and the first tower section made of concrete to establish a connection between the steel adapter and the concrete section.
  • the adapter is joined to the immediately below concrete part or section by means of bolts passing through a first set of holes.
  • the adapter also comprises a second set of holes for allowing the passage of tensioning elements of the tower.
  • the first set of holes and the second set of holes are disposed in concentrical circumferences with different radius, thus needing more material and complex system for attaching auxiliary devices of the tower or thus resulting in technical solutions wherein the disposition of the tensioning elements far from the inner tower wall not carrying out an optimum post-tensioning of the concrete wall.
  • the present invention solves the problems described above.
  • the invention relates to a concrete segment of a section of a tower of a wind turbine, wherein the tower comprising at least the concrete section, an adapter, a plurality of tensioning elements configured to tension the tower and a plurality of bolts configured to join the adapter to the concrete section; wherein the concrete section comprises:
  • the concrete segment comprises:
  • the concrete segment so configured comprises a region, i.e. , a proximal region to each vertical joint wherein at least a bolt is disposed between each one of the at least two vertical joints and at least one hole of the first set of holes, thus reducing the stresses in the proximity of the vertical joint.
  • the tensioning elements with the concrete section so configured can be disposed as close as possible to a central portion of an adapter that is described below, so limiting the stresses since the loads coming above the adapter are transmitted by the central portion.
  • the concrete segment comprises a greater thickness in the proximity of the vertical joint, the disposition of a tensioning element configured to be disposed by the interior of the tower would not be possible.
  • At least a part of the first set of holes and at least a part of the second set of holes are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints.
  • at least two holes of the second set of holes are disposed, in use, between each one of the at least two vertical joints and the at least one hole of the first set of holes.
  • the second set of holes is distributed in an uneven distribution.
  • the concrete segment comprises a greater number of holes of the second set of holes than a number of holes of the first set of holes, wherein the holes of the first set of holes and the holes of the second set of holes are distributed in an uneven distribution.
  • the uneven distribution of holes comprises a first group of holes of the second set of holes and at least a second group of holes of the second set of holes and at least a first group of holes of the first set of holes, wherein first group of holes of the second set of holes is substantially greater in number than the at least a second group of holes of the second set of holes and the at least first group of holes of the first set of holes.
  • m>2n Preferably m>2n.
  • a ratio between the second set of holes and the first set of holes is between 3 and 5.
  • the first set of holes and the second set of holes are disposed in a single circumferential row.
  • the invention also relates to an adapter of a tower of a wind turbine, wherein the tower comprises the adapter, a concrete section, a plurality of tensioning elements configured to tension the tower and a plurality of bolts configured to join the adapter to the concrete section; wherein the concrete section comprises:
  • the adapter comprises:
  • At least a part of the first set of holes and at least a part of the second set of holes are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints.
  • at least two holes of the second set of holes are disposed, in use, between each one of the at least two vertical joints and the at least one hole of the first set of holes.
  • the second set of holes is distributed in an uneven distribution.
  • the uneven distribution of holes comprises a first group of holes of the second set of holes and at least a second group of holes of the second set of holes and at least a first group of holes of the first set of holes, wherein first group of holes of the second set of holes is substantially greater in number than the at least a second group of holes of the second set of holes and the at least first group of holes of the first set of holes.
  • a ratio between the second set of holes and the first set of holes is between 3 and 5.
  • the invention also relates to a wind turbine comprising a tower of a wind turbine comprising the adapter described above and/or a concrete section comprising at least two concrete segments as described above and at least two vertical joints configured to join the at least two concrete segments, tensioning elements configured to tension the tower and bolts configured to join the adapter to the concrete section.
  • Figure 1 shows a concrete part and a steel part of an adapter of a wind turbine tower according to the state of the art, showing bolts passing through a first set of holes and a second set of holes for allowing the passage of tensioning elements of the tower, wherein the first set of holes and the second set of holes are disposed in concentrical circumferences with different radius.
  • Figure 2 shows an elevation view of a tower of a wind turbine comprising an adapter according to the invention and a concrete section according to the invention.
  • Figure 3 shows a detail of section view LL of the tower of Figure 2 according to a first embodiment, wherein the adapter has been partially deleted to shown the upper flange of the concrete section of the tower.
  • Figure 4 shows a section view JJ of Figure 3.
  • Figure 5 shows a section view GG of Figure 3.
  • Figure 6 shows a section view HH of Figure 3.
  • Figure 7 shows a perspective view of the adapter according to the invention.
  • Figure 8 shows a detail of section view LL of the tower of Figure 2 according to a second embodiment.
  • the concrete segment (10) of a section (50) of a tower (100) of a wind turbine wherein the tower (100) comprises at least the concrete section (50), an adapter (20), a plurality of tensioning elements (30) configured to tension the tower and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
  • the concrete segment (10) comprises:
  • a second set of holes (32) intended accommodate, in use, the plurality of bolts (40); wherein at least one hole (32) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (31) of the first set of holes.
  • At least a part of the first set of holes (31) and at least a part of the second set of holes (32) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
  • two holes (32) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and one hole (31) of the first set of holes.
  • the second set of holes (32) is distributed in an uneven distribution, comprising a greater number of holes (32) of the second set of holes than a number of holes (31) of the first set of holes, wherein the holes (31) of the first set of holes and the holes (32) of the second set of holes are distributed in an uneven distribution.
  • a ratio between the second set of holes (32) and the first set of holes (31) is 3,6.
  • the adapter (20) of a tower (100) of a wind turbine according to a preferred embodiment is now described, wherein the tower comprises the adapter (20), a concrete section (50), a plurality of tensioning elements (30) configured to tension the tower (100) and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
  • the adapter (20) comprises:
  • a second set of holes (42) intended to accommodate, in use, the plurality of bolts (40); wherein at least one hole (42) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (41) of the first set of holes.
  • At least a part of the first set of holes (41) and at least a part of the second set of holes (42) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
  • two holes (42) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and the at least one hole (41) of the first set of holes.
  • the second set of holes (42) is distributed in an uneven distribution, comprising a greater number of holes (42) of the second set of holes than a number of holes (41) of the first set of holes, wherein the holes (41) of the first set of holes and the holes (42) of the second set of holes are distributed in an uneven distribution.
  • a ratio between the second set of holes (42) and the first set of holes (41) is 3,6.
  • the wind turbine comprising a tower (100), also comprises an adapter (20) as described above for this embodiment, a concrete section (50) comprising three concrete segments (10) as described above for this embodiment and three vertical joints (25) configured to join the three concrete segments (10), tensioning elements (30) configured to tension the tower (100) and bolts (40) configured to join the adapter (20) to the concrete section (50).

Landscapes

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

Abstract

The object of the invention is a concrete segment of a section of a tower of a wind turbine and an adapter of a tower of a wind turbine and to a wind turbine comprising a tower which in turn comprises the concrete segment of the section and/or the adapter.

Description

CONCRETE SEGMENT OF A SECTION OF A TOWER OF A WIND TURBINE AND ADAPTER OF A TOWER OF A WIND TURBINE TOWER
DESCRIPTION
OBJECT OF THE INVENTION
The object of the invention is a concrete segment of a section of a tower of a wind turbine and an adapter of a tower of a wind turbine.
The invention also relates to a wind turbine comprising a tower which in turn comprises the concrete segment of the section and/or the adapter.
BACKGROUND OF THE INVENTION
The wind turbines comprise a tower, a nacelle which houses the electrical generator and a rotor formed in turn by at least two blades. The tower of the wind turbine supports the nacelle and the rotor. Large wind turbines have steel, lattice, or reinforced concrete towers or even mixed-type towers, the latter comprising sections of different materials, for example, a lower section of concrete and an upper section of steel or lattice.
Due to the height of the wind turbines, the tower has to be divided into several annular sections which are stacked during the wind turbine assembly stage thus forming the full height of the tower. Dividing the tower into sections has the advantage that each section has a size such that its transport by road or rail is easier.
One of the most commonly used materials for large towers is concrete, since it involves competitive costs and performance compared to those to produce steel towers of similar characteristics. However, the weight of each concrete tower section can easily exceed one hundred tons, this fact being infrequent for metal tower sections, so stacking the concrete sections requires heavy-tonnage lifting and positioning means. The cost of using such lifting and positioning means, which may be for example a crane, is directly related to the tonnage and height that it is capable of handling and the time of use thereof. This high-tonnage crane is also used for lifting and positioning the nacelle, as the weight of the nacelle may also exceed 100 tons.
It is known in the state of the art, the towers for wind turbines being of the kind of “concrete-steel hybrid” towers comprising a first tower section comprising at least two concrete segments and further comprising a second tower section made of steel, the tower further comprising an adapter for connecting the two tower sections, and the towers for wind turbines being of the kind of “full-concrete” towers comprising an adapter disposed in the upper part of the upper concrete tower section and below a wind turbine component, the wind turbine component being preferably the yaw bearing of the nacelle.
In a first embodiment, the adapter comprises an annular concrete element and a steel element that has at least one annular flange, wherein the flange covers an upper surface of the concrete element of the adapter in installation position. Consequently, this adapter consists of concrete and steel, in which case the steel element is cast directly with the concrete element of the adapter. Here, the annular flange of the steel element is fully grouted in the concrete without air inclusions. In a related method for building the tower, the steel element with an annular flange is initially provided for building the adapter, which is installed headlong in a ring-shaped formwork. Afterwards, concrete is placed in the formwork and as a result of that, the annular concrete element of the adapter can be made. Here, the concrete is placed directly on the underside of the flange so that, in the finished adapter, the flange is fully grouted establishing a connection between the concrete element and the steel element of the adapter.
In a second embodiment, the adapter is made entirely of steel, and a grout layer must be disposed between the adapter and the first tower section made of concrete to establish a connection between the steel adapter and the concrete section.
However, in both embodiments, the adapter is joined to the immediately below concrete part or section by means of bolts passing through a first set of holes. The adapter also comprises a second set of holes for allowing the passage of tensioning elements of the tower. The first set of holes and the second set of holes are disposed in concentrical circumferences with different radius, thus needing more material and complex system for attaching auxiliary devices of the tower or thus resulting in technical solutions wherein the disposition of the tensioning elements far from the inner tower wall not carrying out an optimum post-tensioning of the concrete wall.
The present invention solves the problems described above.
DESCRIPTION OF THE INVENTION
The invention relates to a concrete segment of a section of a tower of a wind turbine, wherein the tower comprising at least the concrete section, an adapter, a plurality of tensioning elements configured to tension the tower and a plurality of bolts configured to join the adapter to the concrete section; wherein the concrete section comprises:
- at least two concrete segments;
- at least two vertical joints configured to join the at least two concrete segments; wherein the concrete segment comprises:
- an upper flange which in turn comprises:
- a first set of holes intended to accommodate, in use, the plurality of tensioning elements; and
- a second set of holes intended accommodate, in use, the plurality of bolts; wherein at least one hole of the second set of holes is disposed, in use, between each one of the at least two vertical joints and at least one hole of the first set of holes.
The concrete segment so configured comprises a region, i.e. , a proximal region to each vertical joint wherein at least a bolt is disposed between each one of the at least two vertical joints and at least one hole of the first set of holes, thus reducing the stresses in the proximity of the vertical joint.
Since the concrete section is configured to be disposed below the adapter and to be joined to it, the tensioning elements with the concrete section so configured can be disposed as close as possible to a central portion of an adapter that is described below, so limiting the stresses since the loads coming above the adapter are transmitted by the central portion.
Since the concrete segment comprises a greater thickness in the proximity of the vertical joint, the disposition of a tensioning element configured to be disposed by the interior of the tower would not be possible.
In this way, the configuration of the concrete segment described above minimizes the necessary concrete to cast the concrete segment.
Optionally at least a part of the first set of holes and at least a part of the second set of holes are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints. Preferably, at least two holes of the second set of holes are disposed, in use, between each one of the at least two vertical joints and the at least one hole of the first set of holes.
Optionally, a sequence of the second set of holes and the first set of holes is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes of the second set of holes and the even positions in the sequence to the holes of the first set of holes, wherein n>=1 and m>=1.
Also optionally, the second set of holes is distributed in an uneven distribution.
Optionally, the concrete segment comprises a greater number of holes of the second set of holes than a number of holes of the first set of holes, wherein the holes of the first set of holes and the holes of the second set of holes are distributed in an uneven distribution.
Optionally, the uneven distribution of holes comprises a first group of holes of the second set of holes and at least a second group of holes of the second set of holes and at least a first group of holes of the first set of holes, wherein first group of holes of the second set of holes is substantially greater in number than the at least a second group of holes of the second set of holes and the at least first group of holes of the first set of holes.
Optionally, a sequence of the second set of holes and the first set of holes is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes of the second set of holes and the even positions in the sequence to the holes of the first set of holes, wherein n>=1 and m>=2 and m>n. Preferably m>2n.
Optionally, a ratio between the second set of holes and the first set of holes is between 3 and 5.
Optionally, the first set of holes and the second set of holes are disposed in a single circumferential row.
So, disposing the first set of holes and the second set of holes in a single circumferential row, it is possible to dispose the tensioning elements as close as possible to the inner wall of the concrete section disposed below and therefore of the tower, so increasing the available space in the interior of the tower.
Also, alternating the first set of holes and the second set of holes in a single circumferential row, the space intended to be occupied by tensioning elements are now occupied by bolts, thereby reducing the stress on the concrete of the concrete section disposed below the adapter.
The invention also relates to an adapter of a tower of a wind turbine, wherein the tower comprises the adapter, a concrete section, a plurality of tensioning elements configured to tension the tower and a plurality of bolts configured to join the adapter to the concrete section; wherein the concrete section comprises:
- at least two concrete segments; - at least two vertical joints configured to join the at least two concrete segments; and wherein the adapter comprises:
- a lower flange which in turn comprises:
- a first set of holes intended to accommodate, in use, the plurality of tensioning elements; and
- a second set of holes intended to accommodate, in use, the plurality of bolts; wherein at least one hole of the second set of holes is disposed, in use, between each one of the at least two vertical joints and at least one hole of the first set of holes.
Optionally, at least a part of the first set of holes and at least a part of the second set of holes are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints. Preferably, at least two holes of the second set of holes are disposed, in use, between each one of the at least two vertical joints and the at least one hole of the first set of holes.
Optionally, a sequence of the second set of holes and the first set of holes is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes of the second set of holes and the even positions in the sequence to the holes of the first set of holes, wherein n>=1 and m>=1.
Also optionally, the second set of holes is distributed in an uneven distribution.
Optionally, a greater number of holes of the second set of holes than a number of holes of the first set of holes, wherein the holes of the first set of holes and the holes of the second set of holes are distributed in an uneven distribution.
Optionally, the uneven distribution of holes comprises a first group of holes of the second set of holes and at least a second group of holes of the second set of holes and at least a first group of holes of the first set of holes, wherein first group of holes of the second set of holes is substantially greater in number than the at least a second group of holes of the second set of holes and the at least first group of holes of the first set of holes.
Optionally, a sequence of the second set of holes and the first set of holes is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes of the second set of holes and the even positions in the sequence to the holes of the first set of holes, wherein n>=1 and m>=2 and m>n, preferably m>2n.
Optionally, a ratio between the second set of holes and the first set of holes is between 3 and 5.
The invention also relates to a wind turbine comprising a tower of a wind turbine comprising the adapter described above and/or a concrete section comprising at least two concrete segments as described above and at least two vertical joints configured to join the at least two concrete segments, tensioning elements configured to tension the tower and bolts configured to join the adapter to the concrete section.
DESCRIPTION OF THE FIGURES
To complement the description being made and for the sake of a better understanding of the characteristics of the invention according to a preferred practical embodiment thereof, attached as an integral part of said description are a set of drawings wherein, for the purpose of illustration and not limiting the scope of the invention, the following is shown:
Figure 1 shows a concrete part and a steel part of an adapter of a wind turbine tower according to the state of the art, showing bolts passing through a first set of holes and a second set of holes for allowing the passage of tensioning elements of the tower, wherein the first set of holes and the second set of holes are disposed in concentrical circumferences with different radius.
Figure 2 shows an elevation view of a tower of a wind turbine comprising an adapter according to the invention and a concrete section according to the invention.
Figure 3 shows a detail of section view LL of the tower of Figure 2 according to a first embodiment, wherein the adapter has been partially deleted to shown the upper flange of the concrete section of the tower.
Figure 4 shows a section view JJ of Figure 3.
Figure 5 shows a section view GG of Figure 3.
Figure 6 shows a section view HH of Figure 3.
Figure 7 shows a perspective view of the adapter according to the invention.
Figure 8 shows a detail of section view LL of the tower of Figure 2 according to a second embodiment.
PREFERRED EMBODIMENT OF THE INVENTION
The following is a detailed description of the concrete segment (10) of a section (50) of a tower (100) of a wind turbine, wherein the tower (100) comprises at least the concrete section (50), an adapter (20), a plurality of tensioning elements (30) configured to tension the tower and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
- at least two concrete segments (10);
- at least two vertical joints (25) configured to join the at least two concrete segments (10); wherein the concrete segment (10) comprises:
- an upper flange (35) which in turn comprises:
- a first set of holes (31) intended to accommodate, in use, the plurality of tensioning elements (30); and
- a second set of holes (32) intended accommodate, in use, the plurality of bolts (40); wherein at least one hole (32) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (31) of the first set of holes.
In this embodiment, at least a part of the first set of holes (31) and at least a part of the second set of holes (32) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
Also, two holes (32) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and one hole (31) of the first set of holes.
A sequence of the second set of holes (32) and the first set of holes (31) is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes (32) of the second set of holes (32) and the even positions in the sequence to the holes (31) of the first set of holes (31), wherein n=2 and m=8, as shown in Figure 3. So, the second set of holes (32) is distributed in an uneven distribution, comprising a greater number of holes (32) of the second set of holes than a number of holes (31) of the first set of holes, wherein the holes (31) of the first set of holes and the holes (32) of the second set of holes are distributed in an uneven distribution.
In this embodiment, a ratio between the second set of holes (32) and the first set of holes (31) is 3,6.
The adapter (20) of a tower (100) of a wind turbine according to a preferred embodiment is now described, wherein the tower comprises the adapter (20), a concrete section (50), a plurality of tensioning elements (30) configured to tension the tower (100) and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
- at least two concrete segments (10);
- at least two vertical joints (25) configured to join the at least two concrete segments (10); and wherein the adapter (20) comprises:
- a lower flange (45) which in turn comprises:
- a first set of holes (41) intended to accommodate, in use, the plurality of tensioning elements (30); and
- a second set of holes (42) intended to accommodate, in use, the plurality of bolts (40); wherein at least one hole (42) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (41) of the first set of holes.
In this embodiment, at least a part of the first set of holes (41) and at least a part of the second set of holes (42) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
Also, two holes (42) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and the at least one hole (41) of the first set of holes.
A sequence of the second set of holes (42) and the first set of holes (31) is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes (42) of the second set of holes (42) and the even positions in the sequence to the holes (41) of the first set of holes (41), wherein n=2 and m=8, as shown in Figure 8. So, the second set of holes (42) is distributed in an uneven distribution, comprising a greater number of holes (42) of the second set of holes than a number of holes (41) of the first set of holes, wherein the holes (41) of the first set of holes and the holes (42) of the second set of holes are distributed in an uneven distribution.
In this embodiment, a ratio between the second set of holes (42) and the first set of holes (41) is 3,6.
The wind turbine comprising a tower (100), also comprises an adapter (20) as described above for this embodiment, a concrete section (50) comprising three concrete segments (10) as described above for this embodiment and three vertical joints (25) configured to join the three concrete segments (10), tensioning elements (30) configured to tension the tower (100) and bolts (40) configured to join the adapter (20) to the concrete section (50).

Claims

1. Concrete segment (10) of a section (50) of a tower (100) of a wind turbine, wherein the tower (100) comprises at least the concrete section (50), an adapter (20), a plurality of tensioning elements (30) configured to tension the tower and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
- at least two concrete segments (10);
- at least two vertical joints (25) configured to join the at least two concrete segments (10); wherein the concrete segment (10) comprises:
- an upper flange (35) which in turn comprises:
- a first set of holes (31) intended to accommodate, in use, the plurality of tensioning elements (30); and
- a second set of holes (32) intended accommodate, in use, the plurality of bolts (40); wherein at least one hole (32) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (31) of the first set of holes.
2. The concrete segment (10) of claim 1 , wherein at least a part of the first set of holes (31) and at least a part of the second set of holes (32) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
3. The concrete segment (10) of claim 2, wherein at least two holes (32) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and the at least one hole (31) of the first set of holes.
4. The concrete segment (10) of any of previous claims, wherein a sequence of the second set of holes (32) and the first set of holes (31) is n, 1 , n, 1, n, 1, m, 1 , n, 1, n, corresponding the odd positions in the sequence to the holes (32) of the second set of holes (32) and the even positions in the sequence to the holes (31) of the first set of holes (31), wherein n>=1 and m>=1.
5. The concrete segment (10) of any of claims 1 to 3, wherein the second set of holes (32) is distributed in an uneven distribution.
6. The concrete segment (10) of claim 5, comprising a greater number of holes (32) of the second set of holes than a number of holes (31) of the first set of holes, wherein the holes (31) of the first set of holes and the holes (32) of the second set of holes are distributed in an uneven distribution.
7. The concrete segment (10) of claim 6, wherein the uneven distribution of holes comprises a first group of holes (32) of the second set of holes and at least a second group of holes (32) of the second set of holes and at least a first group of holes (31) of the first set of holes, wherein first group of holes (32) of the second set of holes is substantially greater in number than the at least a second group of holes (32) of the second set of holes and the at least first group of holes (31) of the first set of holes.
8. The concrete segment (10) of any claims 5 to 7, wherein a sequence of the second set of holes (32) and the first set of holes (31) is n, 1 , n, 1 , n, 1 , m, 1 , n, 1 , n, corresponding the odd positions in the sequence to the holes (32) of the second set of holes (32) and the even positions in the sequence to the holes (31) of the first set of holes (31), wherein n>=1 and m>=2 and m>n.
9. Adapter (20) of a tower (100) of a wind turbine, wherein the tower comprises the adapter (20), a concrete section (50), a plurality of tensioning elements (30) configured to tension the tower (100) and a plurality of bolts (40) configured to join the adapter (20) to the concrete section (50); wherein the concrete section (50) comprises:
- at least two concrete segments (10);
- at least two vertical joints (25) configured to join the at least two concrete segments (10); and wherein the adapter (20) comprises:
- a lower flange (45) which in turn comprises:
- a first set of holes (41) intended to accommodate, in use, the plurality of tensioning elements (30); and
- a second set of holes (42) intended to accommodate, in use, the plurality of bolts (40); wherein at least one hole (42) of the second set of holes is disposed, in use, between each one of the at least two vertical joints (25) and at least one hole (41) of the first set of holes.
10. The adapter (20) of claim 9, wherein at least a part of the first set of holes (41) and at least a part of the second set of holes (42) are disposed, in use, in a substantially symmetrical way with respect to the at least two vertical joints (25).
11. The adapter (20) of claim 10, wherein at least two holes (42) of the second set of holes are disposed, in use, between each one of the at least two vertical joints (25) and the at least one hole (41) of the first set of holes.
12. The adapter (20) of any of claims 9 to 11 , wherein a sequence of the second set of holes (42) and the first set of holes (31) is n, 1 , n, 1 , n, 1 , m, 1 , n, 1, n, corresponding the odd positions in the sequence to the holes (42) of the second set of holes (42) and the even positions in the sequence to the holes (41) of the first set of holes (41), wherein n>=1 and m>=1.
13. The adapter (20) of any of claims 9 to 11 , wherein the second set of holes (42) is distributed in an uneven distribution.
14. The adapter (20) of claim 13, comprising a greater number of holes (42) of the second set of holes than a number of holes (41) of the first set of holes, wherein the holes
(41) of the first set of holes and the holes (42) of the second set of holes are distributed in an uneven distribution.
15. The adapter (20) of claim 14, wherein the uneven distribution of holes comprises a first group of holes (42) of the second set of holes and at least a second group of holes
(42) of the second set of holes and at least a first group of holes (41) of the first set of holes, wherein first group of holes (42) of the second set of holes is substantially greater in number than the at least a second group of holes (42) of the second set of holes and the at least first group of holes (41) of the first set of holes.
16. The adapter (20) of any claims 13 to 15, wherein a sequence of the second set of holes (42) and the first set of holes (41) is n, 1 , n, 1 , n, 1, m, 1 , n, 1, n, corresponding the odd positions in the sequence to the holes (42) of the second set of holes (42) and the even positions in the sequence to the holes (41) of the first set of holes (41), wherein n>=1 and m>=2 and m>n.
17. Wind turbine comprising a tower (100) of a wind turbine comprising an adapter (20) of any of claims 9 to 18 and/or a concrete section (50) comprising at least two concrete segments (10) of any of claims 1 to 8 and at least two vertical joints (25) configured to join the at least two concrete segments (10), tensioning elements (30) configured to tension the tower (100) and bolts (40) configured to join the adapter (20) to the concrete section (50).
PCT/EP2023/076684 2022-09-27 2023-09-27 Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower WO2024068720A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP22382885.6 2022-09-27
EP22382884.9A EP4345290A1 (en) 2022-09-27 2022-09-27 Lifting system for a wind turbine assembly system and related lifting method
EP22382884.9 2022-09-27
EP22382885.6A EP4345291A1 (en) 2022-09-27 2022-09-27 Method of assembling a wind turbine and wind turbine assembly system, and method of assembling a wind farm and wind farm assembly system
EP23382632.0 2023-06-21
EP23382632.0A EP4345296A1 (en) 2022-09-27 2023-06-21 Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower

Publications (1)

Publication Number Publication Date
WO2024068720A1 true WO2024068720A1 (en) 2024-04-04

Family

ID=88197339

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/076684 WO2024068720A1 (en) 2022-09-27 2023-09-27 Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower

Country Status (1)

Country Link
WO (1) WO2024068720A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130269286A1 (en) * 2010-06-14 2013-10-17 Max Bögl Bauunternehmung GmbH & Co. KG Tower of a Wind Power Plant and Method for Producing a Tower of a Wind Power Plant
CN104121155A (en) * 2014-07-10 2014-10-29 中国电建集团西北勘测设计研究院有限公司 Prestressed concrete and steel combined tower on which self-support wind generator set can be assembled and anchoring method of prestressed concrete and steel combined tower
CN106438215A (en) * 2016-10-08 2017-02-22 霍尔果斯新国金新能源科技有限公司 Tower drum used for wind driven generator
US20180238070A1 (en) * 2015-08-31 2018-08-23 Siemens Gamesa Renewable Energy, Inc. Tower segment and method utilizing segmented bearing plate
EP3744928A1 (en) * 2019-05-27 2020-12-02 Soletanche Freyssinet Wind turbine tower and method of fabrication and assembling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130269286A1 (en) * 2010-06-14 2013-10-17 Max Bögl Bauunternehmung GmbH & Co. KG Tower of a Wind Power Plant and Method for Producing a Tower of a Wind Power Plant
CN104121155A (en) * 2014-07-10 2014-10-29 中国电建集团西北勘测设计研究院有限公司 Prestressed concrete and steel combined tower on which self-support wind generator set can be assembled and anchoring method of prestressed concrete and steel combined tower
US20180238070A1 (en) * 2015-08-31 2018-08-23 Siemens Gamesa Renewable Energy, Inc. Tower segment and method utilizing segmented bearing plate
CN106438215A (en) * 2016-10-08 2017-02-22 霍尔果斯新国金新能源科技有限公司 Tower drum used for wind driven generator
EP3744928A1 (en) * 2019-05-27 2020-12-02 Soletanche Freyssinet Wind turbine tower and method of fabrication and assembling

Similar Documents

Publication Publication Date Title
US11795653B2 (en) Foundation for a wind mill
US10934679B2 (en) Foundation for a wind mill
US10876269B2 (en) Foundation for a windmill
JP4488745B2 (en) Wind turbine
EP1561883B1 (en) Tower for a wind turbine, prefabricated metal wall part for use in tower for a wind turbine and method for constructing a tower for a wind turbine
US8051627B2 (en) Tower adapter, method of producing a tower foundation and tower foundation
US11578698B2 (en) Foundation for a windmill
US20100132299A1 (en) Wind turbine with improved tower and method of assembling same
US20110278850A1 (en) Monopole tower and wind turbine generator having monopole tower
US10669993B2 (en) Wind turbine tower reinforcement system
EP2253781B1 (en) Composite connection for a wind turbine tower structure
EP2574772B1 (en) Wind turbine tower
US11971012B2 (en) Tower section arrangement for a guyed tower of a wind turbine, guyed wind turbine tower, wind turbine and method for assembling a wind turbine
EP4345296A1 (en) Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower
WO2024068720A1 (en) Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower
WO2024068735A1 (en) Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower
WO2024068731A1 (en) Concrete segment of a section of a tower of a wind turbine and adapter of a tower of a wind turbine tower
WO2024068710A1 (en) Adapter of a tower of a wind turbine tower and concrete section of a tower of a wind turbine
WO2024068727A1 (en) Tower of a wind turbine
CN113692490A (en) Tower section and method for constructing a tower
KR102178764B1 (en) Tower structure and wind turbine tower
CN220318574U (en) Wind turbine generator system foundation structure
CN112814851B (en) Split type truss mixed tower structure
RU2782228C2 (en) Foundation for wind power plant
EP4345227A1 (en) Concrete segment of a section of a wind turbine tower, mould configured to cast a concrete segment and method of assembling a wind turbine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23776992

Country of ref document: EP

Kind code of ref document: A1