SEMI-SUBMERSIBLE PLATFORM

Abstract

The present invention relates to a semi-submersible platform (1) for maritime applications such as wind power, electrical substations or hydrogen generation plants, wherein the semi-submersible platform (1) comprises a base body (2) made of concrete equipped with internal compartments (3) adapted to house ballast water, and three or more buoyancy columns (4) substantially made of concrete, wherein said columns (4) protrude from an upper face of the base body (2) and are arranged at the vertexes of the base body (2), wherein at least one column (4) is internally equipped with respective concentric rings (5, 6), an inner ring (5) and an outer ring (6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8).

Claims

1. A semi-submersible platform (1) for maritime applications, comprising: a base body (2) made of concrete equipped with internal compartments (3) adapted to house ballast water, three or more buoyancy columns (4) substantially made of concrete, wherein said columns (4) protrude from an upper face of the base body (2) and are arranged at the vertexes of the base body (2), and wherein the platform (1) is characterised in that at least one column (4) is internally equipped with respective concentric rings (5,6), an inner ring (5) and an outer ring (6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8).

2. The semi-submersible platform (1) of claim 1, wherein all the columns (4) comprise an inner ring (5) and an outer ring (6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8).

3. The semi-submersible platform (1) of claim 2, wherein one of the columns (4) is a main column (4) that is operatively joined to a metal tower (13).

4. The semi-submersible platform (1) of claim 3, wherein the metal tower (13) is coupled to the inner ring (5) of the main column (4) through an anchor ring.

5. The semi-submersible platform (1) of claim 3, wherein the main column (4) comprises more radial walls (7) than the rest of the columns (4).

6. The semi-submersible platform (1) of claim 1, further comprising a lower slab (10) made of concrete joined to a lower face of the base body (2).

7. The platform of claim 6, wherein the lower slab (10) protrudes along the perimeter from the base body (2).

8. The semi-submersible platform (1) of claim 1, wherein the base body (2) has a central opening (14) defining a lunar pool at the centre thereof.

9. The semi-submersible platform (1) of claim 1, wherein the base body (2) has a rectangular configuration with four buoyancy columns (4) arranged at each vertex thereof.

10. The semi-submersible platform (1) of claim 1, further comprising mooring lines (11) operatively joined to each column (4) and intended to be joined to the seabed.

11. The semi-submersible platform (1) of claim 1, further comprising a piece of equipment of maritime application inside at least one of the buoyancy columns (4) and/or supported by means of a support surface that is in turn joined and supported by the buoyancy columns (4).

12. The semi-submersible platform (1) of claim 11, wherein the piece of equipment of maritime application is a maritime electrical substation.

13. The semi-submersible platform (1) of claim 11, wherein the piece of equipment of maritime application is a hydrogen generation facility.

14. A maritime wind installation comprising the submersible platform (1) according to any one of the preceding claims, and further comprising a metal tower (12) joined to one of the buoyancy columns (4) and a wind turbine (13) mounted on said metal tower (12), wherein said wind turbine (16) in turn comprises at least two blades, a nacelle, a hub and an electric generator.

15. A method of transportation and installation of the submersible platform (1) according to any one of claims 1-13, comprising: a.) coupling a metal tower to one of the buoyancy columns (4), or coupling a piece of equipment of maritime application inside one of the columns (4) and/or on a support surface supported by the columns (4), b.) equipping one or more columns (4) with respective concentric rings (5, 6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8), c.) transporting the assembly over the ocean in a self-supporting manner to an installation point located at sea, d.) filling the internal compartments (3) with a ballast fluid, so that the controlled sinking to a predetermined height of the columns occurs, thus leaving the base body (2) below the surface of the sea, e.) coupling the mooring lines (11) to each of the buoyancy columns (4).

Description

DESCRIPTION OF THE DRAWINGS

[0038] As a complement to the description provided herein, and for the purpose of helping to make the features of the invention more readily understandable, in accordance with a preferred practical exemplary embodiment thereof, said description is accompanied by a set of drawings constituting an integral part of the same, which by way of illustration and not limitation, the following has been represented:

[0039] FIG. 1 shows a perspective view of a preferred embodiment of the invention wherein the base body, the lower slab, the buoyancy columns, concentric rings and a metal tower mounted on the inner ring of the main column are illustrated.

[0040] FIG. 2 shows an upper cross-sectional view of the embodiment of FIG. 1, wherein the compartments of the main body, the lunar pool and the anti-flood compartments are illustrated.

[0041] FIG. 3 shows a detailed view of the main column according to the invention showing the coupling of a mooring line thereto.

[0042] FIG. 4 shows a plan view of an installation according to the present invention, comprising a metal tower mounted on the inner ring of the main buoyancy column and a wind turbine mounted on said metal tower.

[0043] FIG. 5 shows a view of the installation of FIG. 4, wherein the mooring lines coupled to each column and to the seabed are more clearly illustrated.

PREFERRED EMBODIMENT OF THE INVENTION

[0044] A detailed description of a preferred exemplary embodiment of the semi-submersible platform, the installation and the method of installation and transport object of the present invention is provided below, with the aid of the attached FIGS. 1-5 described above.

[0045] More particularly, as can be seen in FIG. 1, a first object of the invention is a semi-submersible platform (1) for maritime applications, comprising a base body (2) made of concrete equipped with internal compartments (3) adapted to house ballast water, and three or more buoyancy columns (4) substantially made of concrete, wherein said columns (4) protrude from an upper face of the base body (2) and are arranged at the vertexes of the base body (2), and wherein at least one column (4) is internally equipped with respective concentric rings (5, 6), an inner ring (5) and an outer ring (6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8).

[0046] FIGS. 1 and 2 show that, in the preferred embodiment being described, all the columns (4) comprise an inner ring (5) and an outer ring (6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8).

[0047] As shown in FIG. 1, in the preferred embodiment a metal tower (13) is coupled to the inner ring (5) of the main column (4) through an anchor ring.

[0048] FIG. 2 shows more clearly that the main column (4) comprises more radial walls (7) than the rest of the columns (4).

[0049] Likewise, FIG. 1 illustrates that the semi-submersible platform (1) comprises a lower slab (10) made of concrete joined to a lower face of the base body (2), wherein said lower slab (10) protrudes along the perimeter from the base body (2).

[0050] As shown in FIGS. 1 and 2, the base body (2) is equipped with a central opening (14) that defines a lunar pool at the centre thereof.

[0051] In the preferred embodiment described by all FIGS. 1-5, the base body (2) has a rectangular configuration with four buoyancy columns (4) arranged at each vertex thereof.

[0052] FIG. 3 shows a detailed view of the main column (4) according to the present invention showing the system for coupling a mooring line (11) thereto.

[0053] In the preferred embodiment described, each buoyancy column (4) has mooring lines (11) operatively joined to each column (4) and intended to be joined to the seabed.

[0054] In addition, as shown in FIG. 3, the buoyancy columns (4) can have an access walkway (15) for operators, wherein said access walkway (15) joins two buoyancy columns (4) together by an upper portion thereof.

[0055] FIG. 4 illustrates a preferred embodiment of the semi-submersible installation object of the present invention, wherein said installation comprises the submersible platform (1) described by the previous figures, and further comprises a metal tower (12) joined to one of the buoyancy columns (4) and a wind turbine (13) mounted on said metal tower (12), wherein the wind turbine (16) in turn comprises at least two blades, a nacelle, a hub and an electric generator.

[0056] FIG. 5 illustrates the preferred embodiment described above, wherein the semi-submersible platform (1) is shown already ballasted and in offshore operation configuration, with the wind turbine (16) mounted on the metal tower (13) which is in turn coupled on the inner ring (5) of the main column (4).

[0057] Likewise, FIG. 5 illustrates the mooring lines (11) joined to each of the buoyancy columns (4) and to the seabed.

[0058] The present invention also describes a method of transportation and installation of the semi-submersible platform (1) described above, comprising the following steps: [0059] a.) coupling a metal tower (13) to one of the buoyancy columns (4), or coupling a piece of equipment of maritime application inside one of the columns (4) and/or on a support surface supported by the columns (4), [0060] b.) equipping one or more columns (4) with respective concentric rings (5, 6), joined together by a plurality of radial walls (7) that define anti-flood compartments (8), [0061] c.) transporting the assembly over the ocean in a self-supporting (floating) manner to an installation point located at sea, [0062] d.) filling the internal compartments (3) with a ballast fluid, so that the controlled sinking to a predetermined height of the columns occurs, thus leaving the base body (2) below the surface of the sea, [0063] e.) coupling the mooring lines (11) to each of the buoyancy columns (4).

[0064] The equipment of maritime application mentioned above may comprise the elements and devices required, for example, for a marine electrical substation or for an offshore hydrogen generation plant.