WO2024062177A1 - Structure de support flottant à multiples colonnes centrales pour éolienne offshore et procédé d'assemblage d'une telle structure - Google Patents
Structure de support flottant à multiples colonnes centrales pour éolienne offshore et procédé d'assemblage d'une telle structure Download PDFInfo
- Publication number
- WO2024062177A1 WO2024062177A1 PCT/FR2023/051396 FR2023051396W WO2024062177A1 WO 2024062177 A1 WO2024062177 A1 WO 2024062177A1 FR 2023051396 W FR2023051396 W FR 2023051396W WO 2024062177 A1 WO2024062177 A1 WO 2024062177A1
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- WIPO (PCT)
- Prior art keywords
- floating
- wind turbine
- flotation
- floating support
- central
- 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.)
- Ceased
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Classifications
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
- F03D13/126—Offshore
-
- 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
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
- F03D13/256—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation on a floating support, i.e. floating wind motors
-
- 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
- B63B2035/442—Spar-type semi-submersible structures, i.e. shaped as single slender, e.g. substantially cylindrical or trussed vertical bodies
-
- 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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- 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
- F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
-
- 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
- F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
- F05B2240/932—Mounting on supporting structures or systems on a structure floating on a liquid surface which is a catamaran-like structure
-
- 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
- F05B2240/95—Mounting on supporting structures or systems offshore
-
- 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
- Y02E10/727—Offshore wind turbines
Definitions
- the present invention relates to the general field of offshore wind turbines, that is to say installed offshore, and more particularly to floating support structures for floating offshore wind turbines.
- the invention also relates to a method of installing an offshore wind turbine provided with such a support structure.
- An offshore wind turbine aims to use wind energy to produce electricity using a turbine and an electric generator.
- the floating wind turbines which are concerned by the present invention comprise a turbine generally formed by a motor with several rotating blades with a horizontal axis 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 mounted on a floating support structure.
- Semi-submersible floats constitute the most widespread float model currently. It is a steel or concrete foundation which generally takes the form of a tripod with three (or four) cylindrical columns linked together by metal structures. The stability of the structure is ensured thanks to a ballast system which allows the immersion of part of the foundation. This structure is characterized by its large size and reduced draft.
- WO 2019/106283 describes a semi-submersible float structure and a method of installing a wind turbine provided with such a float structure.
- TLP type platforms are floats which have the particularity of being mainly submerged, the platform being connected to the seabed by live cables which oppose the rise of the float by exerting a force towards the bottom.
- the “SPAR” type float is characterized by its cylindrical shape forming an extension of the wind turbine mast. Its stability is given to it by a heavy ballast which lowers the center of gravity of the assembly and which is equipped with catenary anchors allowing the wind turbine to be fixed by hanging on the seabed.
- WO 2005/021961, WO 2006/121337 and WO 2006/132539 which describe examples of the production of a “SPAR” platform, its anchoring and its installation method at sea.
- semi-submersible “barge” type floats are in the form of a more compact foundation which is comparable to a rectangular barge pierced in its center and made mainly of concrete or steel.
- the object of the invention is therefore to propose a floating support structure (of the “SPAR” type, semi-submersible or of the “TLP” type) for an offshore wind turbine which makes it possible to simplify its assembly and accelerate the time of assembly while minimizing the space required on land.
- a floating support structure of the “SPAR” type, semi-submersible or of the “TLP” type
- an upper connector centered on the axis of the wind turbine mast and comprising, in an upper part, means for receiving the wind turbine mast and, in a lower part, at least two upper receptacles for receiving an upper end central columns.
- the invention is remarkable in that it is based on a modular approach for producing the floating support structure.
- the invention plans to form the floating support pylon using a plurality of identical and independent central columns which are assembled using these connectors.
- the number of central columns could be 2, 3, 4, 5, 6, etc. and thus vary the design of the floating support structure depending on the conditions of the site where the structure is installed.
- these central columns, but also the lower and upper connectors can be prefabricated in series on the same model and quickly assembled on site. This results in a simplification of assembly and a saving of time.
- the floating support pylon may be devoid of a crosspiece so as to form a SPAR type float.
- each central column can be connected to at least one tubular crosspiece, one end of which opposite the central column constitutes a flotation node spaced radially from the floating support pylon so as to form a semi-submersible type float.
- each central column is connected, on the one hand at its lower end to at least one radial crosspiece, and on the other hand above its lower end to at least one diagonal crosspiece, the radial crosspiece and the diagonal crosspiece being connected to each other at the level of the flotation node so as to form a unitary floating assembly of triangular shape.
- each central column is connected, on the one hand at its lower end to at least one first radial crosspiece, and on the other hand above its lower end to at least one second crosspiece radial, the radial crosspieces being connected to one another at the level of the flotation node so as to form a unitary floating assembly of rectangular shape.
- each floating unit assembly comprises at least one flotation module positioned at its flotation node.
- Each of these flotation modules may comprise a central rod extending parallel to the axis of the wind turbine mast and on which at least one steel ring and/or at least one ring of non-metallic material are fitted.
- the axis of the wind turbine mast can be aligned with a center of symmetry of the float. Alternatively, the axis of the mast can be eccentric with respect to a center of symmetry of the float.
- the respective flotation nodes of the floating unit assemblies are connected to each other by at least one cable, the flotation nodes comprising devices for tensioning the cable.
- the structure may further comprise at least one flotation element positioned around the cable.
- each floating unit assembly comprises a ballast piping network housed inside at least one of the crosspieces and the central column.
- the floating support pylon and/or at least one of the radial crosspieces may comprise at least one central flotation unit.
- the lower connector is a part independent of the central columns and comprises at least two lower receptacles to each receive a lower end of the central columns.
- the lower connector is a clamp clamping the respective lower ends of the central columns.
- the invention also relates to a method of assembling a floating support structure as defined above, comprising a step of dry assembly of the lower end of each central column on the lower connector, followed by by a dry assembly step of the upper connector on the upper end of each central column.
- the invention also relates to a method of assembling a floating support structure as defined above, successively comprising:
- the assembly steps can be carried out on a submersible platform allowing the floating support structure to be launched into the water in a calm area protected from swell.
- the submersible platform is advantageously equipped with a lifting gantry allowing the mast of the wind turbine to be assembled on the upper part of the upper connector of the floating support structure.
- Figure 1 is a perspective view of a semi-submersible type floating support structure with four floating unit assemblies according to a first embodiment of the invention.
- Figure 2 is a side view of the floating support structure of Figure 1.
- Figure 3 is an exploded view of the floating support structure of Figures 1 and 2.
- Figure 4A is a perspective view of a SPAR type floating support structure according to a second embodiment of the invention.
- Figure 4B is an exploded view of a variant of the SPAR type floating support structure according to this second embodiment.
- Figure 5 is a perspective view of a semi-submersible type floating support structure with three floating unit assemblies according to a third embodiment of the invention.
- Figure 6 is a perspective view of a semi-submersible type floating support structure with five floating unit assemblies according to a fourth embodiment of the invention.
- Figure 7 is a perspective view of a semi-submersible type floating support structure with six floating unit assemblies according to a fifth embodiment of the invention.
- Figure 8 is a perspective view of a floating support structure according to an alternative embodiment of the first embodiment of the invention.
- Figure 9 is a perspective view of the floating support structure according to another alternative embodiment of the first embodiment of the invention.
- Figures 10 to 17 are views showing an example of the different stages of an assembly process according to the invention of a floating support structure of Figure 1.
- Figure 18 shows an example of maintenance on an offshore wind turbine mounted on the floating support structure of Figure 1.
- Figure 19 is a perspective view of the floating support structure according to yet another alternative embodiment of the first embodiment of the invention with a central flotation unit between the central columns.
- Figure 20 is a perspective view of an alternative embodiment of the floating support structure according to the third embodiment of the invention.
- Figure 21 is a perspective view of a floating support structure of the semi-submersible and eccentric type with two floating unit assemblies according to a sixth embodiment of the invention.
- FIG. 22A Figure 22A shows an alternative embodiment of the floating support structure according to the third embodiment.
- Figure 22B shows another alternative embodiment of the floating support structure according to the third embodiment.
- Figure 23 shows an exemplary embodiment of a ballast piping network within a floating support structure according to the invention.
- Figures 1 to 3 represent a floating support structure 2-1 of the semi-submersible type according to a first embodiment of the invention and intended to receive an offshore wind turbine mast (not shown).
- the floating support structure 2-1 comprises an assembly between a lower connector 4, an upper connector 6, and a plurality (that is to say at least two, and four in number in the first embodiment of Figures 1 to 3) tubular central columns 8 which are all identical and independent of each other so as to form a pylon fitting into the vertical extension of the mast 9 of the wind turbine.
- the central columns 8 generally have a diameter of between 2 and 4 meters. They may or may not be reinforced internally. They are typically made using different assembly technologies and are easy to manufacture without significant investment.
- the lower connector 4 is, in this embodiment, a part independent of the central columns which is centered on a vertical axis X-X of the wind turbine mast and which comprises at least two (at number of four in this exemplary embodiment) lower receptacles 10 regularly distributed around the vertical axis X-X, open upwards and each intended to receive by interlocking complementary shapes the lower end of a central column 8.
- the upper connector 6 is a part independent of the central columns which is centered on a vertical axis XX of the mast 9 of the wind turbine and which comprises, in a lower part, at least two (four in number on this example of embodiment) upper receptacles 12 regularly distributed around the vertical axis XX, open downwards and each intended to receive by interlocking complementary shapes the upper end of a central column 8.
- the upper connector 6 further comprises, in an upper part, means for receiving the mast 9 of the wind turbine.
- these receiving means are in the form of a ring 14 inside which the lower end of the wind turbine mast is fitted before being fixed (by welding for example).
- the upper connector forms a single piece with at least part of the wind turbine mast.
- the receptacles 10 of the lower connector and/or the receptacles 12 of the upper connector each comprise a centering guide 16 intended to facilitate the assembly of a corresponding end of the central column.
- centering guides 16 are in the form of two plates 16a, 16b positioned crosswise and beveled in their respective end parts to form a point.
- the centering guides can take other forms.
- the central columns 8 are fixed to the connectors by welding, by gluing or by mechanical assembly.
- the first embodiment of the invention illustrated in Figures 1 to 3 concerns a “semi-submersible” type float with four floating unit assemblies.
- unitary floating assembly we mean that, for each central column, at least one radial tubular crosspiece and at least one diagonal tubular crosspiece are provided which are connected, on the one hand to the central column, and on the other hand to a flotation node spaced radially from the floating support pylon.
- the floating unit assemblies have a triangular shape.
- a radial tubular crosspiece 20 is connected to a lower end of the column at an angle of between 75° and 90° therewith, and a crosspiece diagonal tubular 22 is connected, on the one hand to the column above the lower end thereof, and on the other hand to a free end of the radial crosspiece by forming with it a flotation node 24 spaced radially from the vertical axis X-X so as to form a floating unitary assembly 18 having a triangular shape.
- floating unitary elements 18 of triangular shape are preferably all identical to each other, which facilitates, on the one hand, their manufacture, and on the other hand their assembly on the lower and upper connectors.
- the floating support structure 2-1 has four floating unit assemblies 18 of identical triangular shape which are regularly spaced from each other (that is to say at the same angle of 90°).
- each floating unit assembly 18 comprises a flotation module 26 which is positioned at its flotation node 24, that is to say at the free end of the radial crosspieces 20 and diagonal 22 opposite to the vertical axis XX of the mast.
- Each flotation module 26 consists of a central rod 28 which extends parallel to the vertical axis X-X of the mast and on which are fitted at least one steel ring 30 forming a ballast tank and/or minus a ring of non-metallic material 32.
- each flotation module 26 thus comprises a steel ring 30 surmounted by three rings of non-metallic material 32, two other rings of non-metallic material 32 being mounted under the ring in steel 30.
- the non-metallic rings 32 are standardized and all identical to each other (in terms of dimensions and material), which makes it possible to adjust their number at each flotation node 24 depending on the installation conditions. of the wind turbine.
- non-metallic rings 32 are made of non-metallic materials, either solid, or foam or syntactic foam in order to play a flotation role.
- Non-metallic materials can be thermosets, thermoplastics or elastomers. These non-metallic rings are held on the central rod 28 by any means (for example by circlips).
- ballast piping (described in conjunction with Figure 23) which is housed inside at least one of the crosspieces 20 , 22 and the central column in order to emerge at a control zone (not shown in the figures) located above the upper connector 6.
- the respective flotation nodes 24 of the floating unitary assemblies 18 are connected to each other by at least one cable 36, at least some of the flotation nodes being equipped with a device for tensioning the cable.
- the cables 36 are thus prestressed and make it possible to reduce the overall weight of the floating support structure and to reduce its assembly time.
- Figure 1 relating to the first embodiment, it may be a plurality of metal cables 36 connecting in pairs the flotation nodes of the floating unit assemblies 18.
- the tensioning of the cables 36 can be ensured by a screw-nut system, or a hydraulic cylinder (operating in traction) making it possible to pull the end of the cable towards one of the flotation nodes, while the other end of the cable is connected to the neighboring flotation node.
- a hydraulic cylinder operating in traction
- a single cable tensioning device can be provided. By tensioning this one, the other cables are also tensioned because, in this variant, the floating unit elements have a possible degree of rotation around the vertical axis X-X at the level of their anchoring in the lower and upper connectors.
- the single cable passes through the grooves provided at each flotation node, these grooves being provided with blockers (cable clamps) allowing the position of the cable to be fixed once the tension has been obtained.
- the path of the cable corresponds to the circumference of the floating support structure defined by the floating unit assemblies 18.
- the tension of the cable or the chain is carried out by a device such as a jack or a screw-nut system fixed to the both ends of the cable (or chain).
- Figure 4A and Figure 4B represent two variants of a floating support structure 2-2, 2-2' according to a second embodiment of the invention, respectively in perspective and exploded view.
- the floating support structures 2-2, 2-2' form "SPAR" type floats (for "Single Point Anchor Reservoir”), i.e. say floats of cylindrical shape forming an extension of the mast of the wind turbine.
- SPAR Single Point Anchor Reservoir
- the floating support structure 2-2 according to the variant of Figure 4A comprises four tubular central columns 8 which are all identical to each other and independent of each other so as to form a pylon fitting into the vertical extension of the wind turbine mast.
- the floating support structure 2-2' according to the variant of Figure 4B comprises three tubular central columns 8 which are all identical to each other so as to form a pylon.
- the central columns 8 forming the pylon of these two floating support structures 2-2, 2-2' all have no crosspiece (both radial and diagonal).
- Figure 5 is a perspective view of a floating support structure 2-3 according to a third embodiment of the invention.
- the floating support structure 2-3 forms a semi-submersible float with three floating unit assemblies 18 which are angularly spaced from each other at the same angle of 120°.
- the cables 36 form a triangle.
- FIG. 6 is a perspective view of a floating support structure 2-4 according to a fourth embodiment of the invention.
- the floating support structure 2-4 forms a semi-submersible float with five floating unit assemblies 18 which are angularly spaced from each other at the same angle of 72°.
- the cables 36 form a pentagon.
- Figure 7 is a perspective view of a floating support structure 2-5 according to a fifth embodiment of the invention.
- the floating support structure 2-5 forms a semi-submersible float with six floating unit assemblies 18 which are angularly spaced from each other at the same angle of 60°.
- the cables 36 form a hexagon.
- Figure 8 is a perspective view of a floating support structure 2-1' according to a variant embodiment of the first embodiment of the invention, that is to say a floating support structure forming a semi-submersible float with four floating unit assemblies 18 which are angularly spaced from each other at the same angle of 90°.
- This alternative embodiment has the particularity that flotation elements 38 are positioned around each cable 36.
- these flotation elements 38 are in the form of foam cylinders mounted around the cables.
- These flotation elements 38 complement the flotation modules 26 positioned at the level of the flotation nodes of the floating unit assemblies 18.
- FIG. 9 is a perspective view of a 2-1" floating support structure according to another alternative embodiment of the first embodiment of the invention, that is to say a floating support structure forming a semi-submersible float with four floating unit assemblies 18 which are angularly spaced from each other at the same angle of 90°.
- This alternative embodiment has the particularity that flotation units 40 are positioned around the radial crosspieces 20 of each floating unit assembly 18.
- these flotation units 40 are in the form of foam cylinders mounted around the radial crosspieces.
- these flotation units 40 replace the flotation modules positioned at the flotation nodes 24 of the floating unit assemblies 18.
- the assembly can be carried out at the dock or on an assembly platform at sea (of the catamaran type) which can be submersible.
- the use of a submersible catamaran allows you to gain autonomy, not to be dependent on the assembly site and above all on the availability of lifting means on the site.
- the lower and upper connectors, as well as the floating unit assemblies can be constructed in series.
- a counterweight 42 of cylindrical shape is placed on the ground on the assembly site, this counterweight being intended to be secured by tendons 50 to the flotation nodes 24 of the floating unit assemblies 18 in order to ensure gravity anchoring of the floating support structure (see the situation illustrated in Figure 18).
- this counterweight 42 has a central recess 44 intended to receive the lower connector of the floating support structure.
- the lower connector 4 of the floating support structure is moved (for example using a crane or a lifting gantry) to be positioned in the recess 44 of the counterweight 40. In the absence of such a recess, the lower connector is placed directly on the counterweight.
- positioning supports 46 are advantageously arranged on the assembly site around the counterweight 42 at the precise locations where the flotation modules of the floating unit assemblies will have to rest.
- each floating unit element 18 is lifted (using the crane or the gantry). lifting) to vertically introduce the lower end of its central column 8 into one of the receptacles 10 of the lower connector.
- the floating unitary element is also pivoted around its central column to rest its flotation module 26 on one of the positioning supports 46.
- Figure 14 represents the progress of the process with the assembly of a second floating unit element 18 on the lower connector 4.
- Figure 15 represents the structure once all of the floating unit elements 18 have been assembled on the lower connector 4.
- the next step shown in Figure 16 consists of assembling (using of the crane or assembly gantry) the upper connector 6 on the upper end of the central columns, then to ensure fixing of these parts together (by welding, by gluing or by mechanical assembly).
- a control platform 48 can then be mounted around the upper end of the upper connector 6.
- the diagonal crosspieces 22 of at least some of the floating unit assemblies 18 of the floating support structure 2-1 are equipped with pins 56 (see also Figure 1) in order to allow the installation of a temporary platform 58 in order to install a telescopic structure 60.
- pins 56 can also accommodate other maintenance structures associated with climbing crane options.
- this central flotation unit 62 (for example a foam cylinder) is inserted vertically along the axis place the upper connector on the upper end of the central columns.
- such a central flotation unit can be pre-installed on the first central column which is assembled during assembly of the floating support structure.
- Figure 20 is a perspective view of an alternative embodiment of the floating support structure 2-3' according to the third embodiment of the invention.
- This alternative embodiment differs from that described in connection with Figure 5 in that the lower connector of the structure does not include lower receptacles for receiving the lower ends of the columns. Here, it is a simple 4' clamp clamping the respective lower ends of the central columns.
- Figure 21 is a perspective view of a semi-submersible type floating support structure according to a sixth embodiment of the invention which is eccentric.
- the floating support structure 2-6 only comprises two floating unit assemblies 18 which form between them a angle which is different from 180°. Also, the axis X'-X' of the mast 9 of the wind turbine is eccentric in relation to the center of symmetry of the structure.
- each of the two floating unit assemblies 18 comprises two flotation modules 26 which are positioned at their respective flotation node 24.
- the presence of two flotation modules per floating unit assembly can be applied to the floating support structures of other embodiments.
- this sixth embodiment provides for positioning a central flotation unit 62 between the central columns 8 forming the pylon.
- Figure 22A and Figure 22B show two alternative embodiments of the 2-3" floating support structure of the semi-submersible type with three floating unit assemblies of rectangular shape according to the third embodiment.
- each floating unitary assembly 18' has a rectangular shape with a central column 8, as well as two radial crosspieces 20a, 20b (namely a high radial crosspiece 20a and a low radial crosspiece 20b spaced apart 'from one another along the axis X-X of the mast 9) and a diagonal crosspiece 22.
- the flotation modules 26' are in the form of vertical columns of polygonal (here hexagonal) straight section which can be produced by assembling flat panels.
- the flotation modules 26" are in the form of vertical columns of cylindrical shape.
- FIG 23 shows an exemplary embodiment of a ballast piping network within a floating support structure according to the invention (partially shown in the figure), and more particularly within a unitary assembly floating 18 of triangular shape.
- This ballast piping network thus comprises pipes 64 which are housed inside the radial 20 and diagonal 22 crosspieces of the floating unit assembly. These pipes 64 open at the level of the flotation modules inside ballast compartments 66 and open into the same central pipe 68 housed inside the central column 8 of the floating unit assembly.
- the central pipe 68 is advantageously provided with a connection system 70 capable of cooperating with a complementary use system 72 housed in the upper connector 6 of the floating support structure.
- these systems 70, 72 form a “plug and play” type assembly which facilitates the assembly and putting into operation of the floating support structure.
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Abstract
Description
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23793420.3A EP4590578A1 (fr) | 2022-09-21 | 2023-09-13 | Structure de support flottant à multiples colonnes centrales pour éolienne offshore et procédé d'assemblage d'une telle structure |
| AU2023345711A AU2023345711A1 (en) | 2022-09-21 | 2023-09-13 | Floating support structure with multiple central columns for an offshore wind turbine and method for assembling such a structure |
| CN202380066853.2A CN119894765A (zh) | 2022-09-21 | 2023-09-13 | 用于海上风力发电机的具有多个中心柱的浮动支撑结构及其组装方法 |
| KR1020257009055A KR20250051745A (ko) | 2022-09-21 | 2023-09-13 | 해상 풍력 터빈을 위한 다중 중앙 기둥을 갖는 부유 지지 구조 및 그러한 구조를 조립하기 위한 방법 |
| JP2025516984A JP2025531329A (ja) | 2022-09-21 | 2023-09-13 | 洋上風力タービン用の複数の中央支柱を有する浮体式支持構造体およびそのような構造体を組み立てる方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2209538A FR3139794A1 (fr) | 2022-09-21 | 2022-09-21 | Structure de support flottant à multiples colonnes centrales pour éolienne offshore et procédé d’assemblage d’une telle structure |
| FRFR2209538 | 2022-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024062177A1 true WO2024062177A1 (fr) | 2024-03-28 |
Family
ID=84370513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/051396 Ceased WO2024062177A1 (fr) | 2022-09-21 | 2023-09-13 | Structure de support flottant à multiples colonnes centrales pour éolienne offshore et procédé d'assemblage d'une telle structure |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP4590578A1 (fr) |
| JP (1) | JP2025531329A (fr) |
| KR (1) | KR20250051745A (fr) |
| CN (1) | CN119894765A (fr) |
| AU (1) | AU2023345711A1 (fr) |
| FR (1) | FR3139794A1 (fr) |
| WO (1) | WO2024062177A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026013445A1 (fr) | 2024-07-09 | 2026-01-15 | Acergy France SAS | Supports flottants pour éoliennes en mer flottantes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3164733A1 (fr) * | 2024-07-19 | 2026-01-23 | Saipem S.A. | structure modulaire de fondation fixe pour éolienne offshore et son procédé d’installation |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005021961A1 (fr) | 2003-08-27 | 2005-03-10 | Norsk Hydro Asa | Eolienne qui s'utilise en mer |
| US20060165493A1 (en) * | 2003-01-06 | 2006-07-27 | Erik Nim | Wind turbine with floating foundation |
| WO2006121337A1 (fr) | 2005-05-06 | 2006-11-16 | Norsk Hydro Asa | Structure d’ancrage pour installation a turbine eolienne flottante |
| WO2006132539A1 (fr) | 2005-06-06 | 2006-12-14 | Norsk Hydro Asa | Installation flottante d’éolienne |
| EP1876093A1 (fr) * | 2006-07-07 | 2008-01-09 | Arcadis Consult GmbH | Fondation offshore flottante et procédé de son réalisation |
| US20120308307A1 (en) * | 2009-12-11 | 2012-12-06 | Grupo De Ingenieria Oceanica, S.L. | Multi-purpose offshore platform and method for manufacturing and installing thereof |
| US8689721B2 (en) * | 2010-03-04 | 2014-04-08 | Jin Wang | Vertically installed spar and construction methods |
| WO2019106283A1 (fr) | 2017-11-29 | 2019-06-06 | Saipem S.A. | Structure de support flottant pour éolienne offshore et procédé d'installation d'une éolienne munie d'une telle structure de support |
| CN111021393A (zh) * | 2019-11-14 | 2020-04-17 | 中国能源建设集团广东省电力设计研究院有限公司 | 漂浮式风机基础、风机及其施工方法 |
| US20220144390A1 (en) * | 2019-04-08 | 2022-05-12 | Stationmar As | A single-column semi-submersible platform |
-
2022
- 2022-09-21 FR FR2209538A patent/FR3139794A1/fr active Pending
-
2023
- 2023-09-13 CN CN202380066853.2A patent/CN119894765A/zh active Pending
- 2023-09-13 WO PCT/FR2023/051396 patent/WO2024062177A1/fr not_active Ceased
- 2023-09-13 AU AU2023345711A patent/AU2023345711A1/en active Pending
- 2023-09-13 KR KR1020257009055A patent/KR20250051745A/ko active Pending
- 2023-09-13 EP EP23793420.3A patent/EP4590578A1/fr active Pending
- 2023-09-13 JP JP2025516984A patent/JP2025531329A/ja active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060165493A1 (en) * | 2003-01-06 | 2006-07-27 | Erik Nim | Wind turbine with floating foundation |
| WO2005021961A1 (fr) | 2003-08-27 | 2005-03-10 | Norsk Hydro Asa | Eolienne qui s'utilise en mer |
| WO2006121337A1 (fr) | 2005-05-06 | 2006-11-16 | Norsk Hydro Asa | Structure d’ancrage pour installation a turbine eolienne flottante |
| WO2006132539A1 (fr) | 2005-06-06 | 2006-12-14 | Norsk Hydro Asa | Installation flottante d’éolienne |
| EP1876093A1 (fr) * | 2006-07-07 | 2008-01-09 | Arcadis Consult GmbH | Fondation offshore flottante et procédé de son réalisation |
| US20120308307A1 (en) * | 2009-12-11 | 2012-12-06 | Grupo De Ingenieria Oceanica, S.L. | Multi-purpose offshore platform and method for manufacturing and installing thereof |
| US8689721B2 (en) * | 2010-03-04 | 2014-04-08 | Jin Wang | Vertically installed spar and construction methods |
| WO2019106283A1 (fr) | 2017-11-29 | 2019-06-06 | Saipem S.A. | Structure de support flottant pour éolienne offshore et procédé d'installation d'une éolienne munie d'une telle structure de support |
| US20220144390A1 (en) * | 2019-04-08 | 2022-05-12 | Stationmar As | A single-column semi-submersible platform |
| CN111021393A (zh) * | 2019-11-14 | 2020-04-17 | 中国能源建设集团广东省电力设计研究院有限公司 | 漂浮式风机基础、风机及其施工方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2026013445A1 (fr) | 2024-07-09 | 2026-01-15 | Acergy France SAS | Supports flottants pour éoliennes en mer flottantes |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4590578A1 (fr) | 2025-07-30 |
| JP2025531329A (ja) | 2025-09-19 |
| FR3139794A1 (fr) | 2024-03-22 |
| CN119894765A (zh) | 2025-04-25 |
| AU2023345711A1 (en) | 2025-03-20 |
| KR20250051745A (ko) | 2025-04-17 |
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