WO2018150064A1 - Structure flottante à installation automatique de type spar pour support d'aérogénérateurs grande puissance - Google Patents

Structure flottante à installation automatique de type spar pour support d'aérogénérateurs grande puissance Download PDF

Info

Publication number
WO2018150064A1
WO2018150064A1 PCT/ES2018/000008 ES2018000008W WO2018150064A1 WO 2018150064 A1 WO2018150064 A1 WO 2018150064A1 ES 2018000008 W ES2018000008 W ES 2018000008W WO 2018150064 A1 WO2018150064 A1 WO 2018150064A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind turbine
triangular
drawer
spar
platform
Prior art date
Application number
PCT/ES2018/000008
Other languages
English (en)
Spanish (es)
Inventor
José BERENGUER COBÍAN
Original Assignee
Berenguer Ingenieros S.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Berenguer Ingenieros S.L. filed Critical Berenguer Ingenieros S.L.
Publication of WO2018150064A1 publication Critical patent/WO2018150064A1/fr

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
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • 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 object of the invention is a floating structure of the Spar type that serves as a base for large off-shore wind turbines (8-10 MW), and which has great advantages for its construction, transport, commissioning and operation, thanks to The novelties that it introduces in its design compared to other existing types.
  • the operation of the Spar platforms is based on lowering the center of gravity as much as possible, below the center of flotation, so that the more they separate, the greater the restorative torque that compensates for the destabilizing torque that wind and waves produce.
  • the structure consists of four main elements:
  • Ballast tank In general, most of the existing Spar platforms consist of a large cylindrical shaft of great length where these four elements are incorporated simply by modifying their interior composition by zones. Given their resulting large draft, they have to be towed in a horizontal position, rotate in their place of operation, ballast with water and solid ballast and finally incorporate the wind turbine with very scarce and expensive offshore auxiliary means.
  • the present invention has an innovative system for commissioning the ballasting tank that allows the structure to be towed with the " ⁇ n-shore" fully installed wind turbine with low draft and great naval stability. Once transferred to its working position, the ballasting tank is filled with water and descends to great depth ensuring significantly lower wind turbine inclinations than other existing platforms. Unlike other Spar systems.
  • the ballast tank is hoist and reflotable, allowing the platform to be towed again with the wind turbine, to be able to do repair or maintenance work in port.
  • Another important innovation is the configuration of the flotation system. There is a main flotation tank that joins the wind turbine and is submerged to minimize the actions of the waves on it, and three other smaller floats, which are semi-submerged, and that contribute to increasing the restorative torque of the Spar system.
  • the proposed structure thus enables a very safe and stable towing system, commissioning without the need for any auxiliary lifting means (jackups, heavilift cranes Certainly, and optimum wind turbine operability.
  • the components of the structure are well differentiated (see figure 1):
  • Main float provides the fundamental buoyancy of the set, and is completely submerged so that the actions of the heathing are affected as little as possible.
  • the lifting connection columns that serve as a connection between the main float and the ballast tank and allow its rise and fall to maintain the structure with high stability, both in the towing and in the service phases.
  • ballast tank that buoys the structure with low draft so that it can be carried out by towing, and in its service phase it is filled with water ballast and descends to its working position to lower the center of the gravity of the set It is therefore also the fundamental element of stability contribution to the platform.
  • the proposed structure belongs to the typology of the Spar platforms, since its operation is fundamentally based on the descent of the center of gravity of the assembly by ballasting, but it also has semi-submersible components for having three floats in the waterline and some stabilization by the mooring lines that anchor it to the bottom.
  • the lower part of the invention consists of a large concrete box whose construction is based on technology, widely used in Spain, of port drawers for the construction of dikes and piers.
  • These are gravity structures, manufactured in floating dock (usually called “drawer"), which are transported by flotation to their place of service.
  • They are large reinforced concrete structures, usually parallelepipedic, whose interior is composed of a series of vertical walls that form lightening cells and that give the whole its buoyancy capacity. Its construction is very versatile, using the sliding formwork technique, which allows a very efficient continuous production, and a direct flotation as it is built.
  • the drawers have a series of constructive conditions that can limit their dimensions such as the characteristics of the infrastructures where they are built, that is, by the drafts of the docks and navigation channels as well as the characteristics of the facilities where they are built, that limit the length, sleeve and strut of the drawers.
  • the Spar floating structures have important advantages over the other floating ones: ⁇ They usually have a simple geometry which makes their construction possible through mass production processes
  • WO2013093160 has a very similar configuration, but is made of prestressed concrete in a monolithic way, next to the wind turbine tower. It is therefore a simple concrete geometry, without joints, which favors durability in the marine environment. However, due to its elongated configuration, the swell produces significant bending stresses, so that so that cracks do not occur, it must be prestressed. The problems of installation and return to port are the same as in the previous patent. Towed in an upright position with the integrated wind turbine
  • WO2010110329 corresponds to a typology similar to the previous two (elongated vertical cylinders), but through a telescopic folding system of the wind turbine tower, and a specific installation method, the whole assembly could be mounted in port (except for the shovels) and be thus transferred to its final location. In this case, the draft is still quite important, and therefore, there will be difficulties in finding suitable ports and navigation channels.
  • the JP2015009591 patent presents a Spar platform composed of a large flotation tank (around 50 m in diameter), a transition zone of much smaller diameter (around 8 m), and a lower ballast tank with a diameter similar to that of flotation that significantly lowers the center of gravity.
  • the upper tank which provides buoyancy
  • the upper tank which provides buoyancy
  • it is a Spar platform (with the center of gravity below the center of flotation), but with a very important semi-submersible component.
  • This double stability system allows you to lower your draft to approximately a third of that of conventional cylindrical Spar, and thus be able to tow with the wind turbine, to its working position.
  • the great drawback is that the entire surface of the float is subject to the actions of the waves, and its ability to respond to the overturning moment is reduced precisely by its low draft.
  • the patent WO2014177729 is configured from hollow concrete bodies joined together by means of hollow arms through which water passes from one to another.
  • This solution like that of the previous patent, due to its low initial draft, allows it to be towed with the wind turbine fully installed and also solves the problem of the great actions of the waves on the float, since the perimeter bodies are completely submerged in Your service position.
  • the problem is that, because of its configuration, the volume that produces buoyancy is not very separate from the volume that the weight provides. Therefore, in order to compensate for the inclinations produced by the wind on the platform, it is necessary to use an active ballast transfer system from one body to another
  • the ES2555500 patent describes a floating work comprising a flotation body capable of being selectively filled with ballast and a lower heavy body suspended by cables that serves to produce the descent of the center of gravity.
  • a flotation body capable of being selectively filled with ballast and a lower heavy body suspended by cables that serves to produce the descent of the center of gravity.
  • This would be folded to its place of work, where it will be extended telescopically to operate.
  • the whole set, except the lower body floats with low draft and can be towed. Subsequently, the submerged weight should be installed by different procedures.
  • the trailer to the place of implantation is carried out in an upright position, with the wind turbine fully installed and with low draft (less than 10 m), and does not require any auxiliary naval system for commissioning.
  • the ballast tank fundamental element of the platform, has a simple geometry that allows a construction similar to that of the port drawers, without joints and without the need for prestressing, which gives it a useful life of more than 50 years.
  • the triangular configuration with three elevating perimeter columns is the usual one on Jack-up platforms, widely known in the offshore world.
  • Jack-up platforms are used to support wind turbines.
  • these platforms are designed to rest on the seabed and require equipment and a very important tractor system that allows you to lift your load above the waves.
  • the present invention does not rely on the seabed and does not require any tractor system, neither to descend nor to raise the towers, since it employs gravity and buoyancy for it. It would only take a simple retention and locking system to control its speed.
  • Spar type floating structure that serves as a base for large off-shore wind turbines constituted by a triangular lower drawer of reinforced concrete, and another metal upper one, on which the wind turbine shaft supports, joined by three lifting columns arranged at the vertices and at whose upper end three floats are arranged.
  • the lower drawer allows the structure to be towed with the wind turbine installed with great stability and low draft and which, in its service position, once descended and filled with water, constitutes a heavy ballast tank.
  • the upper drawer which is submerged in its service position, provides buoyancy to the system and a rigid connection with the wind turbine shaft (see figure 1).
  • the platform is towed from the dock where it was mounted in its entirety, with a low draft (less than 10 m), with the two drawers together and the towers completely raised (see figure 2).
  • the lower drawer is finished ballasting until the upper floats are semi-submerged in the service position, and it is anchored to the seabed by several lines leaving the upper drawer (see figure 5).
  • the platform can now be operational.
  • Ballast tank The characteristics of its components are as follows (see figure 6): Ballast tank
  • the lower tank is composed of a cellular concrete drawer, triangular based, truncated at the vertices, with an interior formed by triangular cells.
  • the parameter "A” has been taken as the basis, which is the distance between axes between two consecutive nodes of the triangular frame on which it is based. This value is variable to adapt to the geometry of the superstructure it supports. The number of interior triangular partitions is also variable. To describe the structure, we will start from an example with seven side partitions (7A). but it is not indicative that it cannot have more or less (see figures 7 and 8).
  • plan it is a truncated equilateral triangle that turns out to be an irregular hexagon with 3 sides greater than 7A in length and three minor, or chamfers, of 1A.
  • the set is inscribed approximately in a square of 8A side.
  • the thicknesses of the interior (E1) and exterior (E2) vertical walls, as well as the thickness of the lower slab (Ll), its heel width (T), or the upper slab (LS), depend on the conditions at which the drawer is going to be submitted. Its manufacture will be done in dry or floating dock, either executed by conventional formwork, climbing, sliding or by assembling prefabricated parts
  • the cells of which it is composed are provided with communication systems between them and are equipped with devices for emptying and filling that allow the regulation of the ballast level.
  • the thicknesses of the exterior walls, and those that serve as an anchor to the elevating columns, are greater than those of the interior walls, but in any case, they will be necessary for each configuration to support the actions to which the structure will be submitted.
  • the main float The main float
  • They connect the main float and the ballast tank and enable its ascent and descent. They may consist of metal lattices of triangular section, similar to the legs of the jackup platforms, or tubular structures of large section. Its height will depend on the conditions to which it will be subjected and the power of the wind turbine it supports
  • the process of commissioning the structure is carried out simply by ballasting its cells with seawater, without the need of any additional means, or specific auxiliary vessels of great capacity, or of flotation elements outside the structure itself.
  • the double system of generating the stabilizer torque against external actions allows to support generators of greater power than the existing ones.
  • the lower ballast tank is a reinforced concrete structure, with a simple geometry composed only of vertical and horizontal walls (never inclined), which allows the knowledge and experience of the technology to be used in its construction system of port drawers, widely developed in Spain that allows simplifying, cheaper and optimizing this type of structures.
  • ballast tank can be lifted and moved back to the port without the need for auxiliary means.
  • the geometry of the structure is adaptable to very different wind turbine configurations. modifying the parameter A (separation between the nodes of the triangular mesh) that can move in the reasonable range of 5 to 8 m, and the number of triangular modules of which the drawer side is composed, which can be from 3 to "n".
  • FIG. 1 It is a perspective view of the Structure according to the present invention. The following are listed as essential elements of the piece:
  • Figure 2.- It is an elevation view of the structure in its towing position
  • FIG. 3 It is an elevation view of the structure with ballast half of the lower drawer
  • Figure 4. It is an elevation view of the structure with ballasted half of the lower drawer and descended to its lower position Figure 5.- It is an elevation view of the structure in its definitive service position, with the lower tank completely ballasted with water.
  • FIG. 6 Detail of the perspective of the structure where the elements of which it is composed are represented described in Figure 1 Figure 7.
  • Figure 6 Detail of the perspective of the structure where the elements of which it is composed are represented described in Figure 1 Figure 7.
  • Figure 6 Detail of the perspective of the structure where the elements of which it is composed are represented described in Figure 1 Figure 7.
  • Figure 7 Horizontal section of the lower ballast tank.
  • the main dimensions are bounded according to parameter "A”, which is the distance between axes between two consecutive nodes of the triangular frame from which it is constituted.
  • the following types of walls are distinguished '
  • FIG. 8 Vertical section of the lower ballast tank Figure 9.- It is a perspective view of the main flotation tank attached to the wind tower The following elements are distinguished:
  • Figure 10. It is a perspective view of the elevating columns connecting the semi-submersible floats at the top and the ballast tank at the bottom. In the columns there are some travel stops, to be able to fix them in their final position
  • Figure 11.- It is a perspective view of the elevating columns of connection in their initial position for the removal of the structure.
  • Figure 12. It is a perspective view of the lifting columns of connection in their final position, having lowered the ballast drawer to the depth of service.

Abstract

L'invention concerne une structure flottante de type Spar pour aérogénérateurs situés au large de grande taille constituée d'un caisson triangulaire inférieur en béton armé, et d'un autre supérieur métallique, également triangulaire, sur lequel appuie le fût de l'aérogénérateur, reliés au moyen de trois colonnes relevables, disposées aux sommets. L'invention est une installation de type Spar, son fonctionnement étant basé sur la descente du centre de gravité de l'ensemble, mais elle présente également des composants semi-submersibles du fait de la présence de trois flotteurs dans la ligne de flottaison qui augmentent son couple restaurateur. Elle permet de remorquer la structure avec l'aérogénérateur complètement installé sur terre, et une fois atteinte sa position de travail, elle est lestée uniquement avec de l'eau et descendue à grande profondeur, assurant de moindres inclinaisons pour le fonctionnement correct de l'aérogénérateur. Le réservoir de lestage peut être hissé et renfloué et permet de remorquer à nouveau la plateforme avec l'aérogénérateur, pour réparation ou entretien dans un port.
PCT/ES2018/000008 2017-02-15 2018-02-01 Structure flottante à installation automatique de type spar pour support d'aérogénérateurs grande puissance WO2018150064A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP201730186 2017-02-15
ES201730186A ES2608504B1 (es) 2017-02-15 2017-02-15 Estructura flotante autoinstalable de tipo spar para soporte de aerogeneradores de gran potencia

Publications (1)

Publication Number Publication Date
WO2018150064A1 true WO2018150064A1 (fr) 2018-08-23

Family

ID=58464748

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2018/000008 WO2018150064A1 (fr) 2017-02-15 2018-02-01 Structure flottante à installation automatique de type spar pour support d'aérogénérateurs grande puissance

Country Status (2)

Country Link
ES (1) ES2608504B1 (fr)
WO (1) WO2018150064A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023170224A1 (fr) 2022-03-09 2023-09-14 Monobase Wind B.V. Structure marine et procédé
WO2024069032A1 (fr) * 2022-09-26 2024-04-04 Bluenewables Sl Dispositif pour l'établissement d'une fondation d'une tour éolienne en haute mer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2821379T5 (es) 2017-11-14 2024-02-22 Parkwind Nv Plataforma de trabajo de turbina eólica

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040169376A1 (en) * 2001-07-06 2004-09-02 Jacques Ruer Offshore wind turbine and method for making same
WO2013083358A1 (fr) * 2011-12-06 2013-06-13 Winddiver Installation de turbine éolienne flottante
DE102011120378A1 (de) * 2011-12-07 2013-06-13 Werner Möbius Engineering GmbH Offshore-Windkraftanlage und Verfahren zum Aufbau und zur Aufstellung der Offshore-Windkraftanlage
GB2538329A (en) * 2015-05-05 2016-11-16 Oceanflow Dev Ltd Platform and assembly solution for a floating offshore device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040169376A1 (en) * 2001-07-06 2004-09-02 Jacques Ruer Offshore wind turbine and method for making same
WO2013083358A1 (fr) * 2011-12-06 2013-06-13 Winddiver Installation de turbine éolienne flottante
DE102011120378A1 (de) * 2011-12-07 2013-06-13 Werner Möbius Engineering GmbH Offshore-Windkraftanlage und Verfahren zum Aufbau und zur Aufstellung der Offshore-Windkraftanlage
GB2538329A (en) * 2015-05-05 2016-11-16 Oceanflow Dev Ltd Platform and assembly solution for a floating offshore device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023170224A1 (fr) 2022-03-09 2023-09-14 Monobase Wind B.V. Structure marine et procédé
NL2031193B1 (en) * 2022-03-09 2023-09-18 Deawoo Eng & Construction Co Ltd Marine structure and method
WO2024069032A1 (fr) * 2022-09-26 2024-04-04 Bluenewables Sl Dispositif pour l'établissement d'une fondation d'une tour éolienne en haute mer
ES2966567A1 (es) * 2022-09-26 2024-04-22 Bluenewables Sl Dispositivo para cimentacion de una torre eolica en alta mar

Also Published As

Publication number Publication date
ES2608504A1 (es) 2017-04-11
ES2608504B1 (es) 2018-01-26

Similar Documents

Publication Publication Date Title
ES2718934T3 (es) Base de turbina eólica flotante con patas de tensión de tipo abocinado, turbina eólica marina y método de construcción
ES2797104T3 (es) Plataforma marítima flotante
ES2617991B1 (es) Estructura marítima para la cimentación por gravedad de edificaciones, instalaciones y aerogeneradores en el medio marino
ES2749915T3 (es) Aerogenerador con cimentación flotante en alta mar
ES2555500B1 (es) Obra flotante y procedimiento de instalación de la misma
ES2637142T3 (es) Estructura sumergible de soporte activo para torres de generadores y subestaciones o elementos similares, en instalaciones marítimas
ES2471071T3 (es) Dispositivo de soporte de un aerogenerador de producción de energía eléctrica en el mar, instalación de producción de energía eléctrica en el mar correspondiente
ES2642177B1 (es) Sistema flotante auxiliar para la instalación y/o el transporte de estructuras marinas y procedimiento que comprende dicho sistema.
ES2545553B1 (es) Plataforma flotante de aprovechamiento de energía eólica
WO2015181428A1 (fr) Sous-structure flottante pour aérogénérateur et son procédé d'installation
DK2596240T3 (en) A support structure for supporting an offshore wind turbine
ES2608504B1 (es) Estructura flotante autoinstalable de tipo spar para soporte de aerogeneradores de gran potencia
ES2796978B2 (es) Procedimiento para el mantenimiento de torres eolicas mediante sistemas flotantes auxiliares
ES2754576T3 (es) Soporte flotante de sección horizontal variable con la profundidad
WO2020136288A1 (fr) Plate-forme flottante pour aérogénérateurs de grande puissance
ES2607428B1 (es) Buque para el transporte e instalación de unidades eólicas fuera costa
ES2840055T3 (es) Planta portuaria y método para amarrar un cuerpo flotante en una planta portuaria
ES2475095T3 (es) Dispositivo de estabilizaci�n flotante
ES2660886B1 (es) Fundación para aerogeneradores flotantes
ES2439777A1 (es) Proceso de sustitucion o remoción de aerogenerador en estructuras flotantes monolíticas tipo spar
ES2938666B2 (es) Plataforma flotante semisumergible para aerogenerador marino
WO2024023371A1 (fr) Plateforme semi-submersible pour le support d'éoliennes
WO2015085445A1 (fr) Équipement amélioré pour la capture de l'énergie marine

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: 18753940

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18753940

Country of ref document: EP

Kind code of ref document: A1