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KR-20260068057-A - Floats for offshore wind platforms

KR20260068057AKR 20260068057 AKR20260068057 AKR 20260068057AKR-20260068057-A

Abstract

The present invention relates to an offshore wind turbine float (2) comprising an upper metal wall (4) forming the top of the float, a lower metal wall (6, 46, 60) forming the bottom of the float, and at least one side wall (8, 18, 28, 28', 48, 58) connecting the upper metal wall and the lower metal wall to form a sealed enclosure for the float, wherein the side wall (8, 18, 28, 28', 48, 58) comprises: an outer metal panel (10, 20, 30, 30', 40, 50), an inner metal panel (12, 22, 32, 32', 42, 52) parallel to the outer panel, and at least one corrugated metal sheet (14, 24, 34, 34', 44', 44", 54) extending within a space formed between the outer metal panel and the inner metal panel, and the corrugated metal sheet is internal It is attached to both the metal panel and the outer metal panel.

Inventors

  • 라보인 장 크리스토프
  • 오버트 장 미셸

Assignees

  • 토탈에너지스 원테크

Dates

Publication Date
20260513
Application Date
20240829
Priority Date
20230904

Claims (10)

  1. As an offshore wind turbine float (2), It comprises an upper metal wall (4) forming the top of the float, a lower metal wall (6, 46, 60) forming the bottom of the float, and at least one side wall (8, 18, 28, 28', 48, 58) connecting the upper metal wall and the lower metal wall to form a sealed enclosure for the float, wherein the side wall (8, 18, 28, 28', 48, 58) - External metal panels (10, 20, 30, 30', 40, 50), - Inner metal panels (12, 22, 32, 32', 42, 52) parallel to the outer panels above, - A marine wind turbine float (2) comprising at least one corrugated metal sheet (14, 24, 34, 34', 44', 44", 54) extending within a space formed between the outer metal panel and the inner metal panel, wherein the corrugated metal sheet is attached to both the inner metal panel and the outer metal panel.
  2. In claim 1, the side wall (8) is a tubular wall that extends between the upper and lower circular metal walls and closes both ends of the tubular wall, and is an offshore wind turbine float (2).
  3. A marine wind turbine float (2) according to claim 1, comprising a plurality of flat side walls (18, 28, 28', 48, 58) attached to the upper and lower metal walls and attached to each other to form the side walls.
  4. In paragraph 3, an offshore wind turbine float (2), wherein at least one flat sidewall (18, 28, 28', 48, 58) is closed to another flat sidewall (18, 28, 28', 48, 58) and forms a hermetic space.
  5. An offshore wind turbine float (2), wherein, in any one of claims 1 to 4, the corrugated metal sheet (14, 24, 34, 34', 44', 44", 54) is bonded to at least one of the inner and outer metal panels.
  6. In any one of claims 1 to 5, the upper metal wall and/or the lower metal wall (46) - External metal panel (40), - An inner metal panel (42) parallel to the outer panel above, - A marine wind turbine float (2) comprising at least one corrugated metal sheet (44', 44") extending within the space formed between the outer metal panel and the inner metal panel, wherein the corrugated metal sheet is attached to both the inner metal panel and the outer metal panel.
  7. In claim 6, the amplitude and period of the grooves differ for each corrugated metal sheet (44', 44"), and the flat metal sheet (49) is preferably arranged between two consecutive corrugated sheets (44', 44"), for an offshore wind turbine float (2).
  8. An offshore wind turbine float (2) according to any one of claims 1 to 7, wherein the side wall comprises a plurality of overlapping corrugated metal sheets.
  9. A marine wind turbine float (2) according to any one of claims 1 to 8, wherein at least one wall of the float comprises at least one pressurizing device of the enclosure of the float.
  10. A panel intended to form at least one part of an offshore wind turbine float (2), said panel - External metal panels (10, 20, 30, 30', 40, 50), - Inner metal panels (12, 22, 32, 32', 42, 52) parallel to the outer panels above, - A panel comprising at least one corrugated metal sheet (14, 24, 34, 34', 44', 44", 54) extending within a space formed between the outer metal panel and the inner metal panel, wherein the corrugated metal sheet is attached to both the inner metal panel and the outer metal panel, and the panel forms a sealed inner space.

Description

Floats for offshore wind platforms The present invention relates to an offshore wind turbine platform, and more specifically, to a float for such an offshore wind turbine platform. Regarding the installation of offshore wind turbines, it is known that wind turbines are installed on floating platforms. To this end, the platform is equipped with elements to anchor it to the seabed, along with multiple floats to keep the platform afloat on the water surface. Generally, floating wind turbine platforms are constructed of steel, such as carbon steel, or reinforced concrete. Regarding reinforced concrete platforms, while they exhibit excellent mechanical performance and resistance to corrosion, they significantly increase the mass of the platform and, consequently, the dimensions of the platform anchorage. Traditionally, steel platforms are composed of steel plates attached to each other, for example by welding steel plates together, and reinforced by steel reinforcement welded to the steel plates, which acts as a stiffener to maintain structural integrity and respond to the effects of waves. To generate buoyancy, at least one plate assembly forms an airtight internal space. The architecture of the aforementioned steel platform increases costs not only because it involves welding rebar to steel plates, but also because of the need to apply anti-corrosion agents to all corrosion-vulnerable surfaces, which represent a significant surface area when considering the welded rebar. Furthermore, given the numerous visible welds and the relief created by the rebar exposed to corrosion, significant and costly monitoring and maintenance of the platform are required. The object of the present invention is to provide a float for an offshore wind turbine platform that reduces manufacturing and maintenance costs while maintaining excellent mechanical performance, particularly resistance to waves. To this end, the present invention relates to a float for an offshore wind turbine platform comprising an upper metal wall forming the top of the float, a lower metal wall forming the bottom of the float, and at least one side wall connecting the upper metal wall and the lower metal wall to create a watertight enclosure of the float. The side wall - External metal panel, - Inner metal panel parallel to the outer panel, - Includes at least one corrugated metal sheet extending in the space between the outer metal panel and the inner metal panel, and the corrugated metal sheet is attached to both the inner metal panel and the outer metal panel. Therefore, due to the structure of the sidewall(s), a lighter float can be obtained compared to the structure of the prior art because there is no reinforcement, at least at the level of the sidewall(s), while maintaining optimal mechanical properties. Furthermore, since there is no rebar, the surface area requiring anti-corrosion coating is reduced, thereby lowering production costs. Additionally, the absence of rebar reduces the external dimensions of the float, improving resistance to waves and currents. The attachment point between the panel and the corrugated sheet is not exposed to external marine conditions, reducing float maintenance costs. An offshore wind turbine float may include at least one of the following features. - The side wall is a tubular wall that extends between the circular upper and lower metal walls and closes both ends of the tubular wall. - Offshore wind turbine floats are attached to upper and lower metal walls and include a number of flat side walls attached to each other to form side walls. - At least one flat sidewall forms a sealed and airtight space with respect to the other flat sidewall. - At least one flat sidewall includes a folded portion and at least one end connected to a second wall formed solely by an external metal panel. - The width of the lower metal wall is greater than the width of the remaining float. - The corrugated metal sheet is bonded to at least one of the inner and outer metal panels. - The corrugated metal sheet is welded to at least one of the inner and outer metal panels by resistance welding. - The upper metal wall and/or lower metal wall includes at least one stiffener. - The upper metal wall and/or the lower metal wall is - External metal panel, - Inner metal panel parallel to the outer panel, - Includes at least one corrugated metal sheet extending within the space formed between the outer metal panel and the inner metal panel, and the corrugated metal sheet is attached to both the inner metal panel and the outer metal panel. - The sidewalls contain several overlapping corrugated metal sheets. - The amplitude and period of the corrugations differ for each corrugated metal sheet, and flat metal sheets are preferably arranged between two consecutive corrugated sheets. - At least one wall of the float includes at least one pressurizing device of the float enclosure. - The pressurizing device is configured to maintain a constant overpressure