WO2024256782A1 - Flotteur semi-submersible pour éolienne offshore - Google Patents
Flotteur semi-submersible pour éolienne offshore Download PDFInfo
- Publication number
- WO2024256782A1 WO2024256782A1 PCT/FR2024/050769 FR2024050769W WO2024256782A1 WO 2024256782 A1 WO2024256782 A1 WO 2024256782A1 FR 2024050769 W FR2024050769 W FR 2024050769W WO 2024256782 A1 WO2024256782 A1 WO 2024256782A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- float
- float according
- pontoons
- rounded
- columns
- 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.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
- B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/16—Shells
- B63B3/18—Shells characterised by being formed predominantly of parts that may be developed into plane surfaces
- B63B3/185—Shells characterised by being formed predominantly of parts that may be developed into plane surfaces comprising only flat panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/26—Frames
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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
- Y02E10/727—Offshore wind turbines
Definitions
- the present invention relates to the general field of semi-submersible floats used for offshore wind turbines. It relates more specifically to a novel semi-submersible float architecture.
- An offshore wind turbine aims to use wind energy to produce electricity using a turbine and an electric generator.
- the floating wind turbines to which the present invention relates comprise a turbine generally formed by a motor with several horizontal-axis rotating blades and an electric generator coupled to the motor, the motor and the generator being fixed to an upper end of a vertical mast (or pylon).
- the lower end of the mast is in turn mounted on a floating support structure (hereinafter called a float).
- the invention relates more specifically to semi-submersible floats, i.e. steel or concrete foundations which are generally presented under the tripod shape with three (or four) cylindrical columns connected to each other by metal structures.
- the stability of the structure is ensured by a ballasting system that allows part of the foundation to be submerged.
- This structure is characterized by its large size and reduced draft.
- a semi-submersible float for an offshore wind turbine comprising at least three vertical columns, one of which is intended to receive a wind turbine mast, the vertical columns being connected to each other by pontoons each formed by a plurality of flat panels which are assembled together at edges extending longitudinally between two columns, and in which, in accordance with the invention, the edges of the pontoons are rounded and are connected at each of their longitudinal ends to a column by means of a transition piece.
- the float according to the invention is remarkable in that the edges of the pontoons are not sharp (i.e. at right angles) but are rounded, which makes it possible to limit the stress concentrations and thus to significantly improve the fatigue behavior of these areas. Compared to right angles, this characteristic allows the float to meet the fatigue criteria while reducing its weight. As for the transition piece, it makes it possible to limit the stresses in the area of the connection between the pontoons and the columns of the float. [0011] Furthermore, the invention makes it possible to improve the manufacturability of the pontoons by eliminating the continuity of the transverse stiffeners from one face of the pontoon to another. The invention also makes it possible to improve the hydrodynamic behavior of the float by eliminating the undesirable effects linked to the sharp edges of the prior art.
- the rounded edges of the pontoons have a quarter circle geometry with a radius between 100 and 1500 mm.
- the rounded edges of the pontoons have a thickness identical to that of the adjacent flat panels.
- the transition piece may have an end that is rounded to connect to the longitudinal end of a rounded edge and an opposite end that forms a right angle.
- the transition part may be a part obtained by one of the following techniques: forging, casting, shaping by bending under a press, and additive manufacturing changing from a triangular shape on one side to a rounded shape on its opposite side.
- each flat panel is provided on an internal face with two or three longitudinal main stiffeners and a plurality of transverse secondary stiffeners. This feature makes it possible to reduce the weight of the float and to facilitate its manufacture.
- the main stiffeners of each flat panel are preferably regularly spaced from each other by means of vertical partitions delimiting ballast zones.
- the float comprises four vertical columns including a central column (4) which is intended to receive the wind turbine mast, and three external columns are connected to the central column by lower pontoons.
- the outer columns may each be formed by an assembly of flat panels.
- the outer columns may each have a substantially cylindrical shape.
- the float may further comprise at least one walkway between an upper end of an outer column and the central column. Such a walkway makes it possible to facilitate access to the float (by helicopter for example) or to have a second access point for a maintenance vessel.
- the central column may have a truncated cone shape or a cylindrical shape.
- the float comprises inside each pontoon and/or each external column a ballast zone which can be adjusted to correct the trim of the float and improve the hydrodynamic behavior of the float.
- Figure 1 shows in perspective a semi-submersible float according to the invention.
- Figure 2 is a sectional view along II-II of Figure 1.
- Figure 3 shows the stiffeners inside a pontoon of the float of Figure 1.
- Figure 1 shows in perspective a semi-submersible float 2 for an offshore wind turbine according to a first embodiment of the invention.
- the float 2 comprises four vertical columns including a central column 4 intended to receive a wind turbine mast (not shown in FIG. 1), and three external columns 6 which are connected to the central column 4 by branches forming lower pontoons 8.
- the lower pontoons 8 and the outer columns 6 are angularly spaced from each other by 120° to form a star structure.
- the vertical columns of the float are connected to each other by upper pontoons and/or lower pontoons.
- each lower pontoon 8 is constituted by the assembly of four flat panels 8i to 84 forming a rectangular parallelepiped (only the flat panels 8i and 84 are visible in FIG. 1).
- each pontoon is different (for example five, six, etc.).
- each pontoon is assembled together at edges 10 which extend longitudinally between two columns and which are rounded by connecting at each of their longitudinal ends to a column by means of a transition piece 12.
- the edges 10 of the pontoons have a quarter-circle geometry with a radius of between 100 and 1500 mm.
- the rounded edges 10 of the pontoons are connected at each of their two longitudinal ends to a vertical column of the float by means of a transition piece 12 making it possible to change from a quarter-circle shape to a right-angle shape.
- the transition piece 12 has an end 12a which is rounded to connect to the longitudinal end of a rounded edge 10 and an opposite end 12b which forms a right angle.
- This transition part 12 is a part which can be obtained by one of the following techniques: forging, casting, shaping by folding under a press, and additive manufacturing going from a triangular shape on one side, to a rounded shape on its opposite side.
- the rounded edges 10 of the pontoons 8 may have a thickness which is identical or different to that of the adjacent flat panels.
- each flat panel 8i to 84 constituting the pontoons 8 is provided, on an internal face, with two or three longitudinal main stiffeners 14 and a plurality of transverse secondary stiffeners 16.
- each flat panel 8i to 84 is provided with three longitudinal main stiffeners 14 regularly spaced from each other and a plurality of transverse secondary stiffeners 16.
- main stiffeners 14 of each flat panel are advantageously spaced from each other by means of vertical partitions 18 delimiting ballast zones.
- At least one ballast zone is provided which can be adjusted to correct the trim of the float and improve its hydrodynamic behavior.
- the outer columns 6 of the float 2 each have a substantially cylindrical shape.
- the invention also applies to floats whose outer columns are each formed by an assembly of flat panels in order to have a polyhedron shape (reference may be made to patent application FR 23 01328 filed on February 13, 2023 by the Applicant).
- the central column 4 of the float 2 receiving the wind turbine mast has a truncated cone shape widening downwards.
- the invention also applies to floats whose central column has a cylindrical shape.
- the float can advantageously further comprise at least one walkway (not forming part of the primary structure of the float and not shown in the figures) between an upper end of an external column and the central column in order to facilitate access to the float (for example helicopter for example) or to have a second access point for a maintenance vessel.
- at least one walkway (not forming part of the primary structure of the float and not shown in the figures) between an upper end of an external column and the central column in order to facilitate access to the float (for example helicopter for example) or to have a second access point for a maintenance vessel.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2024303383A AU2024303383A1 (en) | 2023-06-15 | 2024-06-12 | Semi-submersible float for an offshore wind turbine |
| CN202480033716.3A CN121194924A (zh) | 2023-06-15 | 2024-06-12 | 用于海上风力涡轮机的半潜式漂浮物 |
| KR1020257040127A KR20260003254A (ko) | 2023-06-15 | 2024-06-12 | 해상 풍력 터빈을 위한 반잠수형 부유체 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2306144A FR3149859B1 (fr) | 2023-06-15 | 2023-06-15 | Flotteur semi-submersible pour éolienne offshore |
| FRFR2306144 | 2023-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024256782A1 true WO2024256782A1 (fr) | 2024-12-19 |
Family
ID=88068400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2024/050769 Pending WO2024256782A1 (fr) | 2023-06-15 | 2024-06-12 | Flotteur semi-submersible pour éolienne offshore |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR20260003254A (fr) |
| CN (1) | CN121194924A (fr) |
| AU (1) | AU2024303383A1 (fr) |
| FR (1) | FR3149859B1 (fr) |
| WO (1) | WO2024256782A1 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229505A1 (en) * | 2007-10-08 | 2009-09-17 | Anthony Neil Williams | Battered column semi-submersible offshore platform |
| FR3064973A1 (fr) | 2017-04-10 | 2018-10-12 | Dcns Energies | Flotteur d'eolienne offshore hybride |
| DE102018103894A1 (de) * | 2018-02-21 | 2019-08-22 | Max Bögl Wind AG | Schwimmendes Fundament für eine Off-Shore-Anlage sowie Off-Shore-Anlage mit einem schwimmenden Fundament |
| US20200269960A1 (en) * | 2019-02-21 | 2020-08-27 | Vl Offshore, Llc | Motion-attenuated semi-submersible floating-type foundation for supporting a wind power generation system |
| US20220119081A1 (en) * | 2019-02-12 | 2022-04-21 | Aker Solutions As | Wind energy power plant and method of construction |
| CN114620202A (zh) * | 2022-05-16 | 2022-06-14 | 惠生(南通)重工有限公司 | 一种新型的海上浮式风电平台甲板安装工艺 |
| EP4112439A1 (fr) * | 2021-07-02 | 2023-01-04 | Mareal | Plateforme flottante pour une installation d'éolienne flottante |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2606326A1 (de) | 1975-02-20 | 1976-09-09 | Air Liquide | Verfahren und vorrichtung zum automatischen oder halbautomatischen gasschweissen |
| PT3342699T (pt) * | 2016-12-27 | 2020-06-17 | Nautilus Floating Solutions Sl | Plataforma flutuante marítima |
-
2023
- 2023-06-15 FR FR2306144A patent/FR3149859B1/fr active Active
-
2024
- 2024-06-12 CN CN202480033716.3A patent/CN121194924A/zh active Pending
- 2024-06-12 KR KR1020257040127A patent/KR20260003254A/ko active Pending
- 2024-06-12 AU AU2024303383A patent/AU2024303383A1/en active Pending
- 2024-06-12 WO PCT/FR2024/050769 patent/WO2024256782A1/fr active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229505A1 (en) * | 2007-10-08 | 2009-09-17 | Anthony Neil Williams | Battered column semi-submersible offshore platform |
| FR3064973A1 (fr) | 2017-04-10 | 2018-10-12 | Dcns Energies | Flotteur d'eolienne offshore hybride |
| DE102018103894A1 (de) * | 2018-02-21 | 2019-08-22 | Max Bögl Wind AG | Schwimmendes Fundament für eine Off-Shore-Anlage sowie Off-Shore-Anlage mit einem schwimmenden Fundament |
| US20220119081A1 (en) * | 2019-02-12 | 2022-04-21 | Aker Solutions As | Wind energy power plant and method of construction |
| US20200269960A1 (en) * | 2019-02-21 | 2020-08-27 | Vl Offshore, Llc | Motion-attenuated semi-submersible floating-type foundation for supporting a wind power generation system |
| EP4112439A1 (fr) * | 2021-07-02 | 2023-01-04 | Mareal | Plateforme flottante pour une installation d'éolienne flottante |
| CN114620202A (zh) * | 2022-05-16 | 2022-06-14 | 惠生(南通)重工有限公司 | 一种新型的海上浮式风电平台甲板安装工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3149859A1 (fr) | 2024-12-20 |
| CN121194924A (zh) | 2025-12-23 |
| AU2024303383A1 (en) | 2025-11-27 |
| KR20260003254A (ko) | 2026-01-06 |
| FR3149859B1 (fr) | 2025-12-26 |
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