FR3104539A1 - Offshore floating platform, especially for wind turbines - Google Patents
Offshore floating platform, especially for wind turbines Download PDFInfo
- Publication number
- FR3104539A1 FR3104539A1 FR1914340A FR1914340A FR3104539A1 FR 3104539 A1 FR3104539 A1 FR 3104539A1 FR 1914340 A FR1914340 A FR 1914340A FR 1914340 A FR1914340 A FR 1914340A FR 3104539 A1 FR3104539 A1 FR 3104539A1
- Authority
- FR
- France
- Prior art keywords
- platform
- floating offshore
- boxes
- wind turbines
- offshore platform
- 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
- 238000013016 damping Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
- F05B2240/97—Mounting on supporting structures or systems on a submerged structure
-
- 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
Abstract
Plateforme flottante offshore notamment pour éolienne Cette plateforme offshore flottante notamment pour éolienne, est caractérisée en ce qu’elle comporte dans au moins certaines de ses portions périphériques, des caisses d’amortissement (7) en relation fluidique avec l’environnement de la plateforme. Figure pour l'abrégé :2Offshore floating platform, in particular for wind turbines This floating offshore platform, in particular for wind turbines, is characterized in that it comprises in at least some of its peripheral portions, damping boxes (7) in fluid relationship with the environment of the platform. Figure for abstract: 2
Description
La présente invention concerne une plateforme offshore flottante notamment pour éolienne.The present invention relates to a floating offshore platform, in particular for a wind turbine.
On connaît déjà dans l’état de la technique, de très nombreuses plateformes offshores flottantes de ce type.We already know in the state of the art, many floating offshore platforms of this type.
Celles-ci comportent des portions immergées.These include submerged portions.
De telles plateformes peuvent être utilisées dans l’industrie pétrolière ou encore dans l’industrie des énergies renouvelables comme par exemple dans le domaine des éoliennes offshores.Such platforms can be used in the oil industry or in the renewable energy industry, such as in the field of offshore wind turbines.
On pourra par exemple se référer au document EP 2271547 qui décrit une telle plateforme flottante d’éolienne.For example, reference may be made to document EP 2271547 which describes such a floating wind turbine platform.
Outre le fait de décrire une plateforme offshore flottante pour une éolienne, ce document décrit également l’utilisation de plaques ou d’appendices qui sont destinés à générer des effets hydrodynamiques de trainée et/ou de masse ajoutée à la plateforme.Besides describing a floating offshore platform for a wind turbine, this document also describes the use of plates or appendages which are intended to generate hydrodynamic effects of drag and/or added mass to the platform.
Ceci permet en particulier d’obtenir un amortissement de trainée qui est bénéfique pour la réduction des charges sur les structures par le biais d’une réduction des mouvements de la plateforme.This allows in particular to obtain a drag damping which is beneficial for the reduction of the loads on the structures by means of a reduction of the movements of the platform.
Selon d’autres modes de réalisation, on peut également utiliser des jupes de trainée hydrodynamique pour obtenir un tel effet.According to other embodiments, one can also use hydrodynamic drag skirts to obtain such an effect.
Mais toutes ces solutions connues sont limitées notamment en taille et donc en efficacité.But all these known solutions are limited in particular in size and therefore in effectiveness.
En effet la taille atteignable par les appendices tels que les jupes et les plaques, est limitée par des considérations de faisabilitéstructurelle et de coûts de fabrication.Indeed the size attainable by the appendages such as the skirts and the plates, is limited by considerations of structural feasibility and manufacturing costs.
La taille de ces appendices peut également être limitée par des contraintes industrielles telles que par exemple des contraintes d’espace disponible sur le site de construction de la plateforme.The size of these appendages can also be limited by industrial constraints such as, for example, space constraints available on the platform construction site.
Le but de l’invention est donc de résoudre ces problèmes.The object of the invention is therefore to solve these problems.
A cet effet l’invention a pour objet une plateforme offshore flottante notamment pour éolienne, caractérisée en ce qu’elle comporte dans au moins certaines de ses portions périphériques, des caisses d’amortissement en relation fluidique avec l’environnement de la plateforme.To this end, the subject of the invention is a floating offshore platform, in particular for a wind turbine, characterized in that it comprises, in at least some of its peripheral portions, damping boxes in fluidic relationship with the environment of the platform.
Suivant d’autres caractéristiques de la plateforme selon l’invention, prises seules ou en combinaison:According to other characteristics of the platform according to the invention, taken alone or in combination:
- les caisses d’amortissement sont ménagées dans des portions immergeables de la plateforme;- the sinking boxes are arranged in submersible portions of the platform;
- les caisses d’amortissement sont en relation fluidique avec l’environnement à travers des moyens de restriction de flux;- the damping boxes are in fluidic relation with the environment through flow restriction means;
- les moyens de restriction de flux comprennent des orifices de la plateforme;- the flow restriction means comprise orifices of the platform;
- elle comporte des colonnes extérieures raccordées par des pontons;- it has exterior columns connected by pontoons;
- les caisses d’amortissement sont ménagées dans les pontons à proximité de l’extrémité extérieure de ceux-ci;- the sinking boxes are arranged in the pontoons near the outer end of the latter;
- les caisses d’amortissement sont ménagées dans les colonnes extérieures.- the sinking boxes are arranged in the external columns.
L’invention sera mieux comprise à l’aide de la description qui va suivre, donnée uniquement à titre d’exemple et faite en se référant aux dessins annexés, sur lesquels:The invention will be better understood with the aid of the following description, given solely by way of example and made with reference to the appended drawings, in which:
On a en effet représenté sur la figure 1, une plateforme offshore flottante pour éolienne qui est désignée par la référence générale 1.In fact, FIG. 1 shows a floating offshore platform for a wind turbine which is designated by the general reference 1.
Celle-ci comporte par exemple de façon classique, une colonne centrale désignée par la référence générale 2, par exemple tubulaire, formant support de fixation d’un mât d’éolienne.This comprises, for example, in a conventional manner, a central column designated by the general reference 2, for example tubular, forming a mounting support for a wind turbine mast.
De façon classique également, une nacelle d’éolienne est alors fixée à l’extrémité supérieure de ce mât.Also conventionally, a wind turbine nacelle is then attached to the upper end of this mast.
Cette colonne centrale 2 est reliée par exemple à des colonnes extérieures désignées par les références 3 et 4, par l’intermédiaire de pontons par exemple radiaux, désignés par les références 5 et 6.This central column 2 is connected for example to external columns designated by the references 3 and 4, via pontoons, for example radial, designated by the references 5 and 6.
De telles structures de plateforme offshores flottantes ont déjà été proposées dans l’état de la technique, que celles-ci soient munies de trois, quatre ou d’un nombre différent de pontons et de colonnes centrales et extérieures.Such floating offshore platform structures have already been proposed in the state of the art, whether they are provided with three, four or a different number of pontoons and central and outer columns.
Une partie de cette plateforme offshore flottante est alors immergée en utilisation.Part of this floating offshore platform is then submerged in use.
En particulier les pontons sont immergés en tout ou partie de même que la partie inférieure des colonnes.In particular, the pontoons are fully or partially submerged, as is the lower part of the columns.
Selon l’invention, cette structure comporte dans au moins certaines de ces portions immergeables, des caisses d’amortissement en relation fluidique avec l’environnement de la plateforme.According to the invention, this structure comprises, in at least some of these immersible portions, damping boxes in fluidic relationship with the environment of the platform.
Différentes positions de ces caisses peuvent être envisagées.Different positions of these boxes can be envisaged.
Elles peuvent en effet être ménagées dans les colonnes extérieures de la plateforme comme illustré sur la figure 1, dans les pontons à proximité de l’extrémité extérieure de ceux-ci ou autre.They can indeed be provided in the outer columns of the platform as illustrated in Figure 1, in the pontoons near the outer end of these or other.
En fait ces caisses assurent l’amortissement des déplacements du flotteur en mettant en œuvre des cycles de remplissage et de chasse d’eau.In fact, these boxes ensure the damping of the movements of the float by implementing cycles of filling and flushing.
Ces caisses sont en effet en relation fluidique avec l’environnement à travers des moyens de restriction de flux de remplissage et chasse.These boxes are in fact in fluidic relation with the environment through means of restriction of filling and flushing flows.
Les déplacements de la plateforme provoquent alors des cycles de remplissage et de chasse d’eau de ces caisses ce qui a pour effet d’amortir les déplacements de cette plateformeThe movements of the platform then cause cycles of filling and flushing of these boxes, which has the effect of damping the movements of this platform.
Un exemple de réalisation de l’une de ces caisses est schématisé sur la figure 2.An example of one of these boxes is shown schematically in Figure 2.
Sur cette figure 2, la caisse est désignée par la référence générale 7.In this figure 2, the body is designated by the general reference 7.
Cette caisse 7 est prévue par exemple sur une colonne du flotteur.This body 7 is provided for example on a column of the float.
Bien entendu des caisses analogues peuvent être prévues dans d’autres parties immergeables de la plateforme comme cela a été indiqué précédemment.Of course, similar boxes can be provided in other submersible parts of the platform as indicated above.
En fait ces caisses peuvent être réalisées sous la forme de volumes de ballast 8 en relation fluidique avec l’environnement de la plateforme, à travers des moyens de restrictions de flux.In fact, these boxes can be made in the form of volumes of ballast 8 in fluidic relation with the environment of the platform, through flow restriction means.
Ces moyens comprennent par exemple un conduit de remplissage et de chasse d’eau désigné par la référence 9, dans la partie inférieure de cette caisse et un évent 10 dans sa partie supérieure.These means include, for example, a filling and flushing pipe designated by the reference 9, in the lower part of this box and a vent 10 in its upper part.
D’une façon générale d’autres perforations et/ou orifices de restriction peuvent être ménagés dans les parois de la plateforme.In general, other perforations and/or restriction orifices can be made in the walls of the platform.
Bien entendu d’autres modes de réalisation encore de ces éléments peuvent être envisagés.Of course, still other embodiments of these elements can be envisaged.
On conçoit ainsi qu’il est possible d’intégrer à l’intérieur de la plateforme, des zones formant caisse permettant d’amortir les déplacements de cette plateforme.It is thus conceivable that it is possible to integrate, inside the platform, zones forming a body making it possible to dampen the movements of this platform.
Ceci permet d’améliorer en particulier les performances nautiques d’une telle plateforme flottante, sans en augmenter la taille hors tout.This makes it possible to improve in particular the nautical performance of such a floating platform, without increasing its overall size.
Les surcouts de fabrication sont quant à eux limités.Manufacturing costs are limited.
Bien entendu d’autres modes de réalisation encore peuvent être envisagés.Of course, still other embodiments can be envisaged.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1914340A FR3104539A1 (en) | 2019-12-13 | 2019-12-13 | Offshore floating platform, especially for wind turbines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1914340 | 2019-12-13 | ||
| FR1914340A FR3104539A1 (en) | 2019-12-13 | 2019-12-13 | Offshore floating platform, especially for wind turbines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR3104539A1 true FR3104539A1 (en) | 2021-06-18 |
Family
ID=70154537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1914340A Pending FR3104539A1 (en) | 2019-12-13 | 2019-12-13 | Offshore floating platform, especially for wind turbines |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3104539A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241685A (en) * | 1977-11-22 | 1980-12-30 | Iti Ltd. | Self-stabilizing floating tower |
| US4345533A (en) * | 1979-02-20 | 1982-08-24 | Mitsui Engineering And Shipbuilding Co. Ltd. | Semi-submerged ship |
| US4850744A (en) * | 1987-02-19 | 1989-07-25 | Odeco, Inc. | Semi-submersible platform with adjustable heave motion |
| EP0865376A1 (en) * | 1995-12-06 | 1998-09-23 | Fred Olsen | Wave dampener for floating structures |
| EP2271547A2 (en) | 2008-04-23 | 2011-01-12 | Principle Power, Inc. | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
-
2019
- 2019-12-13 FR FR1914340A patent/FR3104539A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241685A (en) * | 1977-11-22 | 1980-12-30 | Iti Ltd. | Self-stabilizing floating tower |
| US4345533A (en) * | 1979-02-20 | 1982-08-24 | Mitsui Engineering And Shipbuilding Co. Ltd. | Semi-submerged ship |
| US4850744A (en) * | 1987-02-19 | 1989-07-25 | Odeco, Inc. | Semi-submersible platform with adjustable heave motion |
| EP0865376A1 (en) * | 1995-12-06 | 1998-09-23 | Fred Olsen | Wave dampener for floating structures |
| EP2271547A2 (en) | 2008-04-23 | 2011-01-12 | Principle Power, Inc. | Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines |
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