KR102558282B1 - Floating offshore structures and floating offshore power plant having the same - Google Patents

Abstract

The floating offshore structure of the present invention includes a plurality of columns; and a plurality of pontoons installed at lower ends of the columns, a polygonal shape is formed by a virtual line connecting the columns, and the pontoons may be installed inside the polygonal shape.

Description

Floating offshore structure and floating offshore power plant having the same {FLOATING OFFSHORE STRUCTURES AND FLOATING OFFSHORE POWER PLANT HAVING THE SAME}

The present invention relates to a floating offshore structure and a floating offshore power plant having the same.

As problems such as environmental regulations due to global warming and unstable supply and demand of fossil fuels emerge, wind power generation, one of renewable energy production systems, is attracting attention.

A wind power generation device is a device that is installed on land or offshore and converts wind energy into electrical energy to produce electric power.

Wind turbines have been mainly installed on land, but offshore installations are gradually increasing. For wind power generation, the quality of wind on the sea is generally better than on land, and there is an advantage in that it can more easily respond to the problem of wing noise. In particular, in order to secure economic feasibility, it is required to secure a large-scale wind farm, but it is difficult to have such a wind farm on land, and coastal or offshore waters are emerging as large-scale offshore wind farms.

Structures for installing wind turbines on the sea can be largely divided into fixed and floating structures. The fixed structure is a type in which the structure is directly fixed to the sea floor and responds to the environmental load with structural deformation, as in the case of a land structure.

Until recently, offshore wind turbines were stationary and were mainly installed in shallow water. However, the fixed structure provides favorable power generation conditions because the structure is fixed to the seabed, but the scale of the structure becomes too large and the risk of fatigue failure becomes difficult to avoid when the water depth is deep. In addition, there is a problem in that the cost of manufacturing and installing the structure increases astronomically according to the trend of increasing the size of the wind turbine generator.

In addition, since the wind becomes strong and constant as the distance from the land increases, power generation efficiency can be increased. Accordingly, there is a need to develop wind power generation in deep waters away from the coast. Therefore, many studies have been conducted on offshore wind power generators using a floating structure that is not limited by the size of the structure even when the water depth is deep.

The present invention was created to improve the conventional technology, and one object of the present invention is to provide a floating offshore structure that can be installed regardless of water depth and a floating offshore wind power device having the same.

A floating offshore structure according to an aspect of the present invention includes a plurality of columns; and a plurality of pontoons installed at lower ends of the columns, a polygonal shape is formed by a virtual line connecting the columns, and the pontoons may be installed inside the polygonal shape.

Specifically, the columns include first to third columns, and a cross section parallel to the sea level of the first column has a hexagonal shape in which areas adjacent to two facing vertices of the rectangle are chamfered, and the chamfered area is arranged to face the outside of the polygon shape, and cross sections parallel to the sea level of the second and third columns may have a rectangular shape.

Specifically, the area of the cross section parallel to the sea level of the first column may be larger than the area of the cross section parallel to the sea level of the second and third columns.

Specifically, the pontoons include first to third pontoons installed at lower ends of the first to third columns, and the size of the first pontoon may be larger than that of the second and third pontoons.

Specifically, cross sections parallel to the sea level of the first to third pontoons have a shape in which an area adjacent to at least one of two facing vertices of a rectangle is chamfered, and the chamfered area is the polygon shape. It may be disposed toward the inside.

Specifically, the first to third pontoons may have hollow portions formed in a direction perpendicular to the sea level.

Specifically, a first upper brace connecting upper ends of the first column and the second column, a second upper brace connecting upper ends of the first column and the third column, and upper braces connecting areas adjacent to the second column and the third column of the first upper brace and the second upper brace; And the first lower brace connecting the first pontoon and the second pontoon, the second lower brace connecting the first pontoon and the third pontoon, and the lower part of the second column and the third column It may further include lower braces including a third lower brace.

A floating offshore power generation device according to an aspect of the present invention includes the above-described floating offshore structure; And it may be provided with a power generation structure installed on the floating offshore structure.

Specifically, the power generation structure may be installed on the first column.

The floating offshore structure and the floating offshore power plant according to the present invention can be installed without being affected by the water depth of the installation site.

1 is a view for explaining a floating offshore power plant having a floating offshore structure according to an embodiment of the present invention.
Figure 2 is a perspective view for explaining the floating offshore structure (FOS) shown in Figure 1;
FIG. 3 is a perspective view illustrating a first column and a first pontoon of FIG. 2 .
FIG. 4 is a perspective view illustrating second and third columns and second and third pontoons of FIG. 2 .
5 is a perspective view for explaining a column and a pontoon of a floating offshore structure according to another embodiment of the present invention.
6 is a plan view of the columns and pontoons shown in FIG. 5;
7 is an exploded perspective view for explaining the damper shown in FIG. 5;
8 is a perspective view for explaining a floating offshore structure according to another embodiment of the present invention.
9 is a perspective view for explaining the first column shown in FIG. 8;
10 is a perspective view for explaining a floating offshore structure according to another embodiment of the present invention.
11 is an exploded perspective view of the floating offshore structure shown in FIG. 10;
12 is a conceptual side view for explaining a floating offshore structure according to another embodiment of the present invention.
13 is a plan view of the floating offshore structure shown in FIG. 12 .
14 and 15 are perspective views for explaining a floating offshore structure according to another embodiment of the present invention.
16 and 18 are perspective views for explaining a floating marine structure according to another embodiment of the present invention, FIG. 17 is an exploded perspective view of the floating marine structure shown in FIG. 16, and FIG. 19 is an exploded perspective view of the floating marine structure shown in FIG.
20, 22, and 24 to 27 are perspective views for explaining a floating marine structure according to another embodiment of the present invention, and FIG. 21 is a bottom view of the floating marine structure shown in FIG. 20, and FIG. 22 is a bottom view of the floating marine structure shown in FIG.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible, even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining a floating offshore power plant having a floating offshore structure according to an embodiment of the present invention.

Referring to FIG. 1 , the floating offshore power plant may include a floating offshore structure (FOS) and a power generating structure (PGS).

The floating offshore structure (FOS) may be a structure supporting the power generation structure (PGS). The floating offshore structure (FOS) may include a plurality of columns 100 , a plurality of pontoons 200 and a plurality of braces 300 .

The plurality of columns 100 are vertical structures of the floating offshore structure (FOS), the plurality of pontoons 200 may be buoyancy bodies that impart buoyancy to the floating offshore structure (FOS), and the plurality of braces 300 connect the plurality of columns 100 and the plurality of pontoons 200 to improve the structural stability of the floating offshore structure (FOS).

The power generation structure (PGS) may be installed on the floating offshore structure (FOS). The power generation structure PGS may include a tower TW, a nacelle NC, and a blade BL.

The tower (TW) may be installed on a floating offshore structure (FOS). Here, the tower TW may be installed on one of the plurality of columns 100 of the floating offshore structure FOS. That is, the power generation structure (PGS) may be eccentrically installed on one side of the floating offshore structure (FOS).

The nacelle NC may be installed on top of the tower TW. The nacelle NC may generate electricity from rotational force of the blade BL.

The blade BL is rotatably installed in the nacelle NC and can be rotated by wind power.

On the other hand, in this embodiment, it has been described as an example that the power generation structure (PGS) is eccentrically installed on one side of the floating offshore structure (FOS), but it may not be limited thereto. For example, the power generation structure may be installed in the center of a floating offshore structure (FOS).

FIG. 2 is a perspective view for explaining the floating offshore structure (FOS) shown in FIG. 1, FIG. 3 is a perspective view for explaining the first column and the first pontoons of FIG. 2, and FIG. 4 is a perspective view for explaining the second and third columns and the second and third pontoons of FIG.

2 to 4, the floating offshore structure (FOS) may include a plurality of columns 110, 120, and 130, a plurality of pontoons 210, 220, and 230, and a plurality of braces 310, 320, 330, 340, 350, and 360.

The plurality of columns 110 , 120 , and 130 may support upper structures, for example, a power generation structure (PGS). The floating offshore structure (FOS) may have a polygonal shape due to virtual lines connecting the plurality of columns 110 , 120 , and 130 . That is, the columns 110, 120, and 130 may be disposed at vertices of a polygonal shape.

The plurality of columns 110 , 120 , and 130 may include first to third columns 110 , 120 , and 130 . Meanwhile, in this embodiment, the floating offshore structure (FOS) has been described as an example including three columns (110, 120, 130), but is not limited thereto. For example, a floating offshore structure (FOS) may include four or more columns.

A cross section parallel to the sea level of the first to third columns 110, 120, and 130 has a polygonal shape, and the first to third columns 110, 120, and 130 may have the same cross section or different cross sections. For example, a cross section parallel to the sea level of the first column 110 may have a hexagonal shape in which regions adjacent to two facing vertices of a rectangle are chamfered. Here, the chamfered area of the first column 110 may be disposed toward the outside of the floating offshore structure (FOS). The chamfered area of the first column 110 may be disposed to face the outside of the polygonal shape formed by the plurality of columns 110 , 120 , and 130 .

In addition, cross sections parallel to the sea level of the second column 120 and the third column 130 may have a rectangular shape. A cross-sectional area parallel to the sea level of the first column 110 may be larger than a cross-sectional area parallel to the sea level of each of the second column 120 and the third column 130 .

Meanwhile, in the present embodiment, cross-sections parallel to the sea level of the first to third columns 110, 120, and 130 have been described as having a polygonal shape, but are not limited thereto. For example, in the cross section parallel to the sea level of the first to third columns 110, 120, and 130, the portion in contact with the plurality of pontoons 210, 220, and 230 is a straight line, and the other areas may have a curved shape. In addition, cross sections parallel to the sea level of the first to third columns 110, 120, and 130 have a shape in which a portion of a circle is cut in a straight line, and pontoons 210, 220, and 230 may be installed in the cut area.

The plurality of pontoons 210 , 220 , and 230 may include first to third pontoons 210 , 220 , and 230 . The first to third pontoons 210 , 220 , and 230 may be installed at lower ends of the first to third columns 110 , 120 , and 130 . Here, the first to third pontoons 210, 220, and 230 may be installed inside the polygonal shape formed by the first to third columns 110, 120, and 130.

Also, the size of the first pontoon 210 may be larger than the sizes of the second pontoon 220 and the third pontoon 230 . Accordingly, the buoyancy provided by the first pontoon 210 may be greater than the buoyancy provided by the second pontoon 220 and the third pontoon 230, respectively.

Sections parallel to the sea level of the first to third pontoons 210, 220, and 230 have a polygonal shape, and may have the same cross section or different cross sections. For example, a cross section parallel to the sea level of the first pontoon 210 may have a hexagonal shape in which regions adjacent to two vertices of a rectangle spaced apart from the first column 110 are chamfered. In addition, in the cross section of the second pontoon 220 and the third pontoon 230, at least one of the two vertexes of the rectangle disposed apart from the second column 120 and the third column 130 may have a rectangular chamfered shape. In cross sections of the first to third pontoons 210, 220, and 230, the chamfered regions may have a straight or rounded curved shape. Therefore, the pontoons 210, 220, and 230 can be referred to as polygonal members.

The chamfered areas of the first to third pontoons 210 , 220 , and 230 may be disposed toward the inside of the polygonal shape formed by the plurality of columns 110 , 120 , and 130 .

The first to third pontoons 210 , 220 , and 230 may have hollow parts 210 , 220 , and 230 . The hollow part HP is formed in a direction perpendicular to the sea level, and can prevent damage to the first to third columns 110, 120, and 130 caused by waves or the like.

The plurality of braces 310 , 320 , 330 , 340 , 350 , and 360 may include upper braces 310 , 320 , and 330 and lower braces 340 , 350 , and 360 .

The upper braces 310 , 320 , and 330 may include first to third upper braces 310 , 320 , and 330 . The first upper brace 310 may connect an upper end of the first column 110 and an upper end of the second column 120 . The second upper brace 320 may connect an upper end of the first column 110 and an upper end of the third column 130 . The third upper brace 330 may connect the first upper brace 310 and the second upper brace 320 . Here, the third upper brace 330 may connect regions adjacent to the second column 120 and the third column 130 of the first upper brace 310 and the second upper brace 320 .

The lower braces 340, 350, and 360 include the first lower brace 340 connecting the first pontoon 210 and the second pontoon 220, the second lower brace 350 connecting the first pontoon 210 and the third pontoon 230, and the third lower brace 36 connecting the lower portions of the second column 120 and the third column 130. 0) may be included. The third lower brace 360 may be connected to the first lower brace 340 and the second lower brace 350 .

The length of the first lower brace 340 may be smaller than the length of the first upper brace 310 . This is because the first upper brace 310 connects the upper portions of the first column 110 and the second column 120, but the first lower brace 340 connects the first pontoon 210 and the second pontoon 220.

The length of the second lower brace 350 may be smaller than the length of the second upper brace 320 . This is because the second upper brace 320 connects the upper portions of the first column 110 and the third column 130, but the second lower brace 350 connects the first pontoon 210 and the third pontoon 230.

The length of the third lower brace 360 may be greater than the length of the third upper brace 330 . This is because the third upper brace 360 connects regions adjacent to the second column 120 and the third column 130 of the first upper brace 310 and the second upper brace 320, but the third lower brace 360 connects the lower portion of the second column 120 and the lower portion of the third column 130.

Meanwhile, a tower of a power generation structure (PGS) may be installed on the first column 110 . That is, the power generation structure (PGS) may be eccentrically installed on one side of the floating offshore structure (FOS). This is because the cross-sectional area of the first column 110 is the largest, so that a sufficient installation space for the power generation structure (PGS) can be secured. In addition, since the buoyancy of the first pontoon 210 installed on the first column 110 is the greatest, even if the power generation structure PGS is installed on the first column 110, the stability of the power generation structure PGS can be improved.

Meanwhile, in this embodiment, the power generation structure (PGS) has been described as being installed on the first column 110 of the floating offshore structure (FOS) as an example, but may not be limited thereto. For example, the power generation structure may be installed in the center of a floating offshore structure (FOS).

In the floating offshore structure (FOS) as described above, the first to third pontoons 210, 220, and 230 may be installed on the inner surface of the bottom of the first to third columns 110, 120, and 130. Therefore, it may be advantageous to berth the quay of a ship for installing or maintaining a floating offshore structure (FOS) and a power generation structure (PGS).

In addition, since the length of each of the first lower brace 340 and the second lower brace 350 is shorter than the length of each of the first upper brace 310 and the second upper brace 320, the structural stability of the floating offshore structure (FOS) can be improved.

5 is a perspective view for explaining a column and a pontoon of a floating offshore structure according to another embodiment of the present invention, FIG. 6 is a plan view of the column and a pontoon shown in FIG. 5, and FIG. 7 is an exploded perspective view for explaining the damper shown in FIG.

5 to 7, the column 100 is a vertical structure of a floating offshore structure (FOS), and a cross section parallel to the sea level of the column 100 may have a polygonal shape.

The pontoon 200 may impart buoyancy to the floating offshore structure (FOS). The pontoon 200 may be installed on one side of the bottom of the column 100.

A cross section parallel to the sea level of the pontoon 200 may have a polygonal shape. For example, a section parallel to the sea level of the pontoon 200 may have a shape in which regions adjacent to two vertexes of a rectangle spaced apart from the column 100 are chamfered.

The pontoon 200 may include a hollow part HP, and the hollow part HP is formed in a direction perpendicular to the sea level to prevent damage to the column 100 due to waves or the like. In addition, a porous damper DP may be disposed in the hollow part HP. The damper DP may include at least one porous plate DP1 , DP2 , DP3 having a plurality of through holes TH. For example, the damper DP may include first to third porous plates DP1 , DP2 , and DP3 .

The damper (DP) can help dissipate the energy of the floating offshore structure (FOS). Accordingly, the damper DP may reduce the vertical movement of the floating offshore structure FOS.

Meanwhile, through holes TH of the porous plates DP1 , DP2 , and DP3 adjacent to each other may not overlap each other. For example, through holes TH of the first porous plate DP1 and the second porous plate DP2 may not overlap each other. Also, through holes TH of the second porous plate DP2 and the third porous plate DP3 may not overlap each other on a plane. Also, through holes TH of the first porous plate DP1 and the third porous plate DP3 may overlap each other on a plane.

Also, the through holes TH of the porous plates DP1 , DP2 , and DP3 adjacent to each other may overlap each other. For example, through holes TH of the first to third porous plates DP1 , DP2 , and DP3 may overlap each other on a plane.

8 is a perspective view for explaining a floating offshore structure according to another embodiment of the present invention, and FIG. 9 is a perspective view for explaining a first column shown in FIG. 8 .

8 and 9, the floating offshore structure (FOS) may include a plurality of columns 110, 120, and 130, a plurality of pontoons 210, 220, 230, 240, and 250, and a plurality of braces 310 and 320.

The plurality of columns 110 , 120 , and 130 may support upper structures, for example, a power generation structure (PGS). The floating offshore structure (FOS) may have a polygonal shape due to virtual lines connecting the plurality of columns 110 , 120 , and 130 . That is, the columns 110, 120, and 130 may be disposed at vertices of a polygonal shape.

The plurality of columns 110 , 120 , and 130 may include first to third columns 110 , 120 , and 130 .

A cross section parallel to the sea level of the first to third columns 110, 120, and 130 has a polygonal shape, and the first to third columns 110, 120, and 130 may have the same cross section or different cross sections. For example, a cross section parallel to the sea level of the first column 110 may have a pentagonal shape in which regions adjacent to two facing vertices of a rectangle are chamfered and the chamfered lines are connected. Cross sections parallel to the sea level of the second column 120 and the third column 130 may have a rectangular shape. Here, the chamfered portion of the first column 110 may be disposed toward the inside of the floating offshore structure (FOS). Also, the cross-sectional area of the first column 110 may be larger than the cross-sectional areas of the second column 120 and the third column 130 , respectively.

The plurality of pontoons 210, 220, 230, 240, and 250 may include first to third pontoons 210, 220, and 230, and first and second extended pontoons 240 and 250. The first pontoon 210 may have a shape connecting lower ends of the first column 110 and the second column 120 . Here, the first pontoon 210 may be connected to one of the chamfered regions of the first column 110 . The second pontoon 220 may have a shape connecting the first column 110 and the third column 130 . Here, the second pontoon 220 may be connected to another one of the chamfered regions of the first column 110 . The third pontoon 230 may have a shape connecting lower ends of the second column 120 and the third column 130 . That is, the first to third pontoons 210 , 220 , and 230 may be arranged to correspond to polygonal lines formed by the first to third columns 110 , 120 , and 130 .

In the floating offshore structure (FOS), the first extension pontoon 240 may be installed on the outer surface of the lower end of the second column 120. In the floating offshore structure (FOS), the second extension pontoon 250 may be installed on the outer surface of the lower end of the third column 130. Here, the first extension pontoon 240 may have a shape extending parallel to the first pontoon 210 , and the second extension pontoon 250 may have a shape extending parallel to the second pontoon 220 . Accordingly, the first to third pontoons 210, 220, and 230 and the first and second extension pontoons 240 and 250 may form an A shape as a whole.

The plurality of braces 310 and 320 may include a first brace 310 and a second brace 320 . The first brace 310 connects the upper end of the first column 110 and the upper end of the second column 120, and the second brace 320 connects the upper end of the first column 110 and the upper end of the third column 130. Can be connected.

The floating offshore structure (FOS) according to the present embodiment may have higher buoyancy than a floating offshore structure in which pontoons are disposed only near the first to third columns 110, 120, and 130. Accordingly, the floating stability of the floating offshore structure (FOS) can be improved.

10 is a perspective view for explaining a floating offshore structure according to another embodiment of the present invention, and FIG. 11 is an exploded perspective view of the floating offshore structure shown in FIG. 10 .

Referring to FIGS. 10 and 11 , the floating offshore structure (FOS) may include a plurality of columns 160 , 170 , 180 , and 190 and a plurality of pontoons 260 and 270 .

The floating offshore structure (FOS) according to the present embodiment may have a structure in which four columns 160, 170, 180, and 190 are provided, and a tower TW is disposed between the four columns 160, 170, 180, and 190. 0, 190) may be disposed around the tower TW.

A power generation structure (PGS) may be installed on the tower (TW). The height of the tower TW may be equal to or greater than the height of the columns 160 , 170 , 180 , and 190 .

The columns 160 , 170 , 180 , and 190 may include first to fourth columns 160 , 170 , 180 , and 190 . The heights of the first to fourth columns 160, 170, 180, and 190 may be the same.

A cross section parallel to the sea level of the tower TW and the first to fourth columns 160, 170, 180, and 190 may have a polygonal shape, for example, a quadrangular shape. The columns 160, 170, 180, and 190 having a rectangular cross section parallel to the sea level may be easier to manufacture than columns having a circular cross section parallel to the sea level.

The plurality of pontoons 260 and 270 may include a main pontoon 260 and a plurality of auxiliary pontoons 270 .

The main pontoon 260 may include a central portion 261 having a quadrangular cross section parallel to the sea level, and a plurality of wings 265 extending from each side of the central portion 261 .

A tower TW may be installed in the center 261 , and the center 261 may support the tower 151 . The wings 265 have a square cross section parallel to the sea level, and the length of a side of each wing 265 in contact with the center 261 may be greater than the length of a side spaced apart from the center 261 . In FIGS. 10 and 11, the central portion 261 and the wing portions 265 are integrally formed as an example, but are not limited thereto. For example, the central portion 261 and the wing portions 265 may have a structure in which they are separately manufactured and coupled.

The auxiliary pontoons 270 have a rectangular cross section parallel to the sea level, and each of the auxiliary pontoons 270 may be installed in contact with a side spaced apart from the center 261 of the wing parts 265 . First to fourth columns 160, 170, 180, and 190 may be installed on top of each of the auxiliary pontoons 270.

In this embodiment, a structure in which the main pontoon 260 and the auxiliary pontoons 270 are separated has been described as an example, but is not limited thereto. For example, the main pontoon 260 and the auxiliary pontoons 270 may be integrally manufactured.

In addition, in this embodiment, it has been described as an example that the columns 160, 170, 180, 190 and auxiliary pontoons 270 are provided four by one, but it is not limited thereto. For example, each of the columns 160, 170, 180, and 190 and auxiliary pontoons 270 may be provided in five or more. In this case, the central portion 261 of the main pontoon 260 has a polygonal shape corresponding to the number of columns 160, 170, 180, and 190 and auxiliary pontoons 270, and the number of wing parts 265 corresponds to the number of columns 160, 170, 180, and 190 and auxiliary pontoons 270.

The floating offshore structure (FOS) as described above can be produced separately by blocking the tower (TW), the first to fourth columns (160, 170, 180, 190), the main pontoon 260, and the auxiliary pontoons 270. Therefore, it is possible to facilitate installation by transporting each block to the installation location of the floating offshore structure (FOS).

12 is a conceptual side view for explaining a floating marine structure according to another embodiment of the present invention, and FIG. 13 is a plan view of the floating marine structure shown in FIG. 12 .

Referring to FIGS. 12 and 13 , the floating offshore structure (FOS) may include a plurality of columns 160 , 170 , and 180 and a plurality of horizontal stiffeners 410 , 420 , and 430 .

The plurality of columns 160 , 170 , and 180 may support upper structures, for example, a power generation structure (PGS). In this embodiment, the columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 .

In the floating offshore structure (FOS), the tower (TW) is disposed in the center, and the first to third columns (160, 170, 180) may be disposed around the tower (TW).

Cross sections parallel to the sea level of the tower TW and the first to third columns 160, 170, and 180 may have various shapes. For example, cross sections parallel to the sea level of the tower TW and the first to third columns 160, 170, and 180 may have circular or polygonal shapes.

The plurality of horizontal reinforcing members 410 , 420 , and 430 may serve as braces connecting the tower TW and the first to third columns 160 , 170 , and 180 .

The plurality of horizontal stiffeners 410 , 420 and 430 may include first to third horizontal stiffeners 410 , 420 and 430 . One end of each of the first to third horizontal stiffeners 410, 420, and 430 is connected to the upper end of the tower TW, and the other end of each of the first to third horizontal stiffeners 410, 420, and 430 may be connected to the upper end of the first to third columns 160, 170, and 180.

The first to third horizontal reinforcing members 410, 420, and 430 may have a structure in which lengths can be adjusted. For example, the first to third horizontal stiffeners 410, 420, and 430 may be implemented as a telescopic structure.

As described above, the floating offshore structure (FOS) according to the present embodiment has a structure in which the lengths of the first to third horizontal reinforcing members 410, 420, and 430 are adjustable, so that the first to third columns 160, 170, 180 can be adjusted in position. Therefore, after fabricating the floating offshore structure (FOS) in a narrow space, installing the floating offshore structure (FOS) on the sea, and using the first to third horizontal reinforcing members 410, 420, and 430 It is possible to adjust the position of the first to third columns (160, 170, 180).

In addition, the floating offshore structure (FOS) according to the present embodiment can adjust the position of the first to third columns 160, 170, and 180, so it can be installed in the ocean at various depths, and various types of towers (TW) can be installed.

14 and 15 are perspective views for explaining a floating offshore structure according to another embodiment of the present invention.

14 and 15, the floating offshore structure (FOS) may include a plurality of columns 160, 170, and 180, a structural reinforcing member 500, and a plurality of braces 310, 320, 330, 340, 350, and 360. In addition, as shown in FIG. 15 , the floating offshore structure (FOS) may further include a plurality of pontoons 210 , 220 , and 230 .

The plurality of columns 160 , 170 , and 180 may support upper structures, for example, a power generation structure (PGS). The plurality of columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 . A cross section parallel to the sea level of the tower TW and the first to third columns 160, 170, and 180 may have a circular shape.

The position of the top of the tower TW is higher than the position of the top of the columns 160, 170, and 180, and the position of the bottom of the tower TW is lower than the position of the top of the columns 160, 170, and 180, and may be higher than the position of the bottom of the columns 160, 170, and 180.

The columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 . The heights of the first to third columns 160, 170, and 180 may be the same.

The structural reinforcing member 500 may extend from the lower part of the tower TW. The structural reinforcing member 500 extends from the lower end of the tower TW to provide an installation space for the braces 310, 320, 330, 340, 350, and 360 connecting the tower TW and the first to third columns 160, 170, and 180.

The plurality of braces 310, 320, 330, 340, 350, and 360 may include first to third upper braces 310, 320, and 330 and first to third lower braces 340, 350, and 360.

The first to third upper braces 310 , 320 , and 330 may connect the lower end of the tower TW and the upper ends of the first to third columns 160 , 170 , and 180 . For example, the first upper brace 310 may connect the lower end of the tower TW and the upper end of the first column 160 . The second upper brace 320 may connect the lower end of the tower TW and the upper end of the second column 170 . The third upper brace 330 may connect the lower end of the tower TW and the upper end of the third column 180 .

The first to third lower braces 340 , 350 , and 360 may connect the structural reinforcing member 500 and lower ends of the first to third columns 160 , 170 , and 180 . For example, the first lower brace 340 may connect the structural reinforcing member 500 and the lower end of the first column 160 . The second lower brace 350 may connect the structural reinforcing member 500 and the lower end of the second column 170 . The third lower brace 360 may connect the structural reinforcing member 500 and the lower end of the third column 180 .

In the floating offshore structure (FOS) shown in FIG. 15, the plurality of pontoons 210, 220, and 230 include first to third pontoons 210, 220, and 230, and each of the first to third pontoons 210, 220, and 230 may be installed inside the bottom of the first to third columns 160, 170, and 180. . Here, the first to third lower braces 340, 350, and 360 are not directly connected to the lower ends of the first to third columns 160, 170, and 180, but the first to third pontoons 210, 220, 230 and the structural reinforcing member 500 may be connected.

Each of the first to third pontoons 210, 220, and 230 may include a hollow part HP. The hollow part HP is formed in a direction perpendicular to the sea level, and can prevent damage to the first to third columns 160, 170, and 180 caused by waves or the like.

As described above, the floating offshore structure (FOS) includes the structural reinforcing member 500, thereby increasing the installation space of the braces 310, 320, 330, 340, 350, and 360 connecting the tower TW and the first to third columns 160, 170, and 180, in particular, the first to third lower braces 340, 350, and 360. can be easily obtained.

16 and 18 are perspective views for explaining a floating marine structure according to another embodiment of the present invention, FIG. 17 is an exploded perspective view of the floating marine structure shown in FIG. 16, and FIG. 19 is an exploded perspective view of the floating marine structure shown in FIG.

16 to 19, the floating offshore structure (FOS) includes a plurality of columns 160, 170, and 180, a structural reinforcement member 500, a plurality of braces 310, 320, 330, 340, 350, 360, 370, 380, and 390, and a plurality of pontoons 210, 220, and 230. ) may also be included.

The plurality of columns 160 , 170 , and 180 may support upper structures, for example, a power generation structure (PGS).

In the floating offshore structure (FOS), the tower (TW) is disposed in the center, and the columns (160, 170, 180) may be disposed around the tower (TW).

A power generation structure (PGS) may be installed on the tower (TW).

The height of the top of the tower TW is higher than the height of the top of the columns 160, 170, and 180, and the height of the bottom of the tower TW is lower than the height of the top of the columns 160, 170, and 180, and may be higher than the height of the bottom of the columns 160, 170, and 180.

The tower TW may include a first tower part TW1 and a second tower part TW2. The first tower part TW1 may be disposed below the second elliptical part 152 , and the second tower part TW2 may be disposed above the first tower part TW1 . The upper part of the first tower part TW1 may be positioned substantially the same as the upper part of the columns 160 , 170 , and 180 . Also, the lower end of the first tower part TW1 may be positioned higher than the lower ends of the columns 160 , 170 , and 180 .

Cross sections parallel to the sea level of the first tower part TW1 and the second tower part TW2 may have a circular shape.

The columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 . The heights of the first to third columns 160, 170, and 180 may be the same. A cross section parallel to the sea level of the first to third columns 160, 170, and 180 may have a circular shape.

Meanwhile, as shown in FIGS. 18 and 19 , the diameters of the lower ends of the first to third columns 160, 170, and 180 may be greater than the diameters of the upper ends of the first to third columns 160, 170, and 180. In addition, the diameters of the lower ends of the first to third columns 160, 170, and 180 may gradually increase as they go downward. That is, lower ends of the first to third columns 160, 170, and 180 may have a tapered shape.

The structural reinforcing member 500 may extend from the lower part of the first tower part TW1. The structural reinforcing member 500 extends from the lower end of the first tower portion 110 and connects the first tower portion TW1 and the first to third columns 160, 170, and 180 with braces 310, 320, 330, 340, 350, 360, 370, 380, and 390. Installation space may be provided.

The plurality of braces 310, 320, 330, 340, 350, 360, 370, 380, and 390 include first to third upper braces 310, 320, and 330, first to third diagonal braces 370, 380, and 390, first to third lower braces 340, 350, 360) may be included.

The first to third upper braces 310 , 320 and 330 may connect the upper ends of the first to third columns 160 , 170 and 180 with the first tower unit 15 . For example, the first upper brace 310 may connect the upper end of the first column 160 and the first tower part TW1. The second upper brace 320 may connect the upper end of the second column 170 and the first tower part TW1. The third upper brace 330 may connect the upper end of the third column 180 and the first tower part TW1.

The first to third diagonal braces 370 , 380 , and 390 may connect lower ends of the first to third columns 160 , 170 , and 180 to the first tower portion TW1 . For example, the first diagonal brace 370 may connect the lower end of the first column 160 and the first tower part TW1. The second diagonal brace 380 may connect the lower end of the second column 170 and the first tower part TW1. The third diagonal brace 390 may connect the lower end of the third column 180 and the first tower part TW1.

The first to third lower braces 340 , 350 , and 360 may connect the structural reinforcing member 500 and lower ends of the first to third columns 160 , 170 , and 180 . For example, the first lower brace 340 may connect the structural reinforcing member 500 and the lower end of the first column 160 . The second lower brace 350 may connect the structural reinforcing member 500 and the lower end of the second column 170 . The third lower brace 360 may connect the structural reinforcing member 500 and the lower end of the third column 180 .

In the floating offshore structure (FOS) shown in FIGS. 16 to 19, the first to third upper braces 310, 320, and 330 and the first to third lower braces 340, 350, and 360 may be installed parallel to the sea level, and the first to third diagonal braces 370, 380, and 390 may be installed inclined to the sea level. That is, in the floating offshore structure (FOS) shown in FIGS. 16 to 19, the first to third upper braces 310, 320, and 330, the first to third diagonal braces 370, 380, and 390, and the first to third lower braces 340, 450, and 360 may complete a trust structure.

The plurality of pontoons 210 , 220 , and 230 may include first to third pontoons 210 , 220 , and 230 . Each of the first to third pontoons 210 , 220 , and 230 may be installed under the first to third columns 160 , 170 , and 180 . Cross sections parallel to the sea level of the first to third pontoons 210, 220, and 230 may have a circular shape.

The diameters of the first to third pontoons 210 , 220 , and 230 may be the same as the diameters of the lower ends of the first to third columns 160 , 170 , and 180 . For example, as shown in FIGS. 16 and 17 , the diameters of the first to third pontoons 210, 220, and 230 may be the same as those of the first to third columns 160, 170, and 180. Also, as shown in FIGS. 18 and 19 , the diameters of the first to third pontoons 210, 220, and 230 may be the same as the diameters of the lower ends of the first to third columns 160, 170, and 180. That is, the diameters of the first to third pontoons 210 , 220 , and 230 may be greater than the diameters of the upper ends of the first to third columns 160 , 170 , and 180 .

The floating offshore structure (FOS) according to this embodiment manufactures a tower (TW), first to third columns (160, 170, 180) and a plurality of braces (310, 320, 330, 340, 350, 360, 370, 380, 390) as one block, and the tower (TW) and the first to third pontoons (210, 220, 230) can be produced as separate blocks. That is, the floating offshore structure (FOS) of the present embodiment can be easily manufactured by blocking each structure.

20, 22, and 24 to 27 are perspective views for explaining a floating marine structure according to another embodiment of the present invention, and FIG. 21 is a bottom view of the floating marine structure shown in FIG. 20, and FIG. 22 is a bottom view of the floating marine structure shown in FIG. 22.

20 to 27, the floating offshore structure (FOS) may include a tower (TW), a plurality of columns (160, 170, 180), a plurality of pontoons (260, 270), and a plurality of horizontal stiffeners (410, 420, 430).

The plurality of columns 160 , 170 , and 180 may support upper structures, for example, a power generation structure (PGS). The plurality of columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 .

A power generation structure (PGS) may be installed on the tower (TW).

The height of the top of the tower TW is higher than the height of the top of the columns 160, 170, and 180, and the height of the bottom of the tower TW may be substantially equal to or higher than the height of the bottom of the columns 160, 170, and 180. A cross section parallel to the sea level of the tower TW may have a circular shape.

The columns 160 , 170 , and 180 may include first to third columns 160 , 170 , and 180 . The heights of the first to third columns 160, 170, and 180 may be the same.

A cross section parallel to the sea level of the first to third columns 160, 170, and 180 may have a polygonal shape. For example, as shown in FIGS. 20 to 23 , cross sections parallel to the sea level of the first to third columns 160 , 170 , and 180 may have a quadrangular shape.

Also, as shown in FIGS. 24 to 27 , cross sections parallel to the sea level of the first to third columns 160 , 170 , and 180 may have a hexagonal shape. Here, the width of the area adjacent to the tower TW of the first to third columns 160, 170, and 180 may be greater than the width of the area spaced apart from the tower TW of the first to third columns 160, 170, and 180.

The plurality of pontoons 260 and 270 may include auxiliary pontoons 270 installed inside the lower ends of the first to third columns 160 , 170 , and 180 . Here, the auxiliary pontoons 270 may have a shape covering the remaining three surfaces except for the outer surfaces of the first to third columns 160, 170, and 180. In addition, the auxiliary pontoons 270 may have a trapezoidal or hexagonal shape, and a width of a region adjacent to the first to third columns 160, 170, and 180 may be smaller than a width of a region spaced apart from the first to third columns 160, 170, and 180.

In addition, the plurality of pontoons 270 may further include a main pontoon 260 installed at the lower end of the tower TW, as shown in FIGS. 25 to 27 . The main pontoon 260 may be installed in a form surrounding the lower end of the tower TW. A cross section parallel to the sea level of the main pontoon 260 may have a shape corresponding to a cross section parallel to the sea level of the tower TW.

For example, when the cross section parallel to the sea level of the tower TW is circular, the cross section parallel to the sea level of the main pontoon 260 may be circular.

The plurality of horizontal stiffeners 410, 420, and 430 are installed parallel to the sea level, and may connect the upper ends of the first to third columns 160, 170, and 180 to the tower TW. That is, the horizontal stiffeners 410, 420, and 430 may serve as a brace connecting the upper ends of the first to third columns 160, 170, and 180 and the tower TW.

The plurality of horizontal reinforcing members 410 , 420 and 430 may include first to third reinforcing members 410 , 420 and 430 . One end of the first reinforcing member 410 may be connected to the tower TW, and the other end of the first reinforcing member 410 may be connected to the first column 160 . One end of the second reinforcing member 420 may be connected to the tower TW, and the other end of the second reinforcing member 420 may be connected to the second column 170 . One end of the third reinforcing member 420 may be connected to the tower TW, and the other end of the third reinforcing member 420 may be connected to the third column 180 .

Meanwhile, a plurality of braces 300 may be further included in consideration of the structural stability of the floating offshore structure (FOS). The plurality of braces 300 may be installed in various forms.

As shown in FIG. 20 , the braces 300 may connect lower ends of the first to third columns 160 , 170 , and 180 and a portion of the lower end of the tower TW. In FIG. 20 , the braces 300 may have a shape extending in a direction inclined to the sea level.

Also, as shown in FIGS. 22 and 27 , some of the braces 300 may connect each of the auxiliary pontoons 270 . Some of the braces 300 may horizontally connect the auxiliary pontoons 270 and the tower TW, or the auxiliary pontoons 270 and the main pontoon 260 to the sea level. Another part of the braces 300 may connect the auxiliary pontoons 270 and the tower TW at an angle to the sea level. The rest of the braces 300 may connect each of the first to third columns 160 , 170 , and 180 and the auxiliary pontoons 270 at an angle.

Also, as shown in FIG. 26 , some of the braces 300 may connect each of the pontoons 270 . Some of the braces 300 may horizontally connect the auxiliary pontoons 270 and the tower TW, or the auxiliary pontoons 270 and the main pontoon 260 to the sea level. Another part of the braces 300 may connect the auxiliary pontoons 260 and the tower TW at an angle to the sea level.

In addition to the above-described embodiments, the present invention may encompass all embodiments generated by a combination of at least two or more of the above embodiments or a combination of at least one or more of the above embodiments and known technology.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, the present invention is not limited thereto, and by those skilled in the art within the technical spirit of the present invention It will be clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

FOS: floating offshore structures
100, 110, 120, 130, 140, 160, 170, 180, 190: column
200, 210, 220, 230, 240, 250, 260, 270; pontoon
300, 310, 320, 330, 340, 350, 360, 370, 380, 390: Brace
410, 420, 430; horizontal stiffener
500: structural reinforcing member
PGS: power generation structure
TW: Tower
NC: Nacelle
BL: Blade
DP: porous damper
HP: Hollow
TH: through hole

Claims (9)

a plurality of columns; and
Includes a plurality of polygonal members installed at the bottom of the columns,
It is formed in a polygonal shape by a virtual line connecting the columns,
The multifaceted members,
At the bottom of the columns, at least one of the inner and outer sides of the polygon has a shape that protrudes inward toward neighboring columns, and is not directly connected to each other,
Among the columns, one polygonal member provided in the column supporting the tower is connected to two braces,
Among the columns, the brace provided between the two columns that do not support the tower is directly connected to the two columns that do not support the tower. According to claim 1,
The columns include first to third columns,
The cross section parallel to the sea level of the first column has a hexagonal shape in which areas adjacent to two facing vertices of the rectangle are chamfered, and the chamfered area is disposed to face the outside of the polygonal shape,
A floating offshore structure having a rectangular cross section parallel to the sea level of the second and third columns. According to claim 2,
The area of the cross section parallel to the sea level of the first column is larger than the area of the cross section parallel to the sea level of the second and third columns. According to claim 3,
The polygonal members include first to third polygonal members installed at the bottom of each of the first to third columns,
The size of the first polygonal member is larger than the sizes of the second and third polygonal members. According to claim 4,
The cross section parallel to the sea level of the first to third polygon members has a shape in which an area adjacent to at least one of the two facing vertices of the rectangle is chamfered, and the chamfered area is a floating marine structure arranged to face the inside of the polygon shape. According to claim 4,
The first to third polygonal members are floating marine structures having hollow parts formed in a direction perpendicular to the sea level. According to claim 4,
a first upper brace connecting upper ends of the first column and the second column, a second upper brace connecting upper ends of the first column and the third column, and upper braces connecting regions adjacent to the second column and the third column of the first upper brace and the second upper brace; and
A floating offshore structure further comprising lower braces including a first lower brace connecting the first polygonal member and the second polygonal member, a second lower brace connecting the first polygonal member and the third polygonal member, and a third lower brace at lower portions of the second column and the third column. The floating offshore structure of any one of claims 1 to 7; and
A floating offshore power generation device having a power generation structure installed on the floating offshore structure. According to claim 8,
The power generation structure is a floating marine power generation device installed on any one of the plurality of columns.

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