KR20190068820A - Floating platform structure with three layered floating components, and construction method for the same - Google Patents

Abstract

The present invention provides a floating platform with a triple floating body and a construction method thereof which form a floating platform with a triple floating body to easily control a motion of the floating platform under a load where a wind and a wave act to resolve a problem of increasing the size and weight of a conventional floating platform since motion control of the floating platform is not easy and allow the floating platform to be slim. Also, a disadvantage of a suction pile vulnerable to drawing is overcome and seabed anchoring can be conveniently installed by an anchoring method where a weight type by the weight of a third seabed floating body filled with seawater by seawater ballasting and a suction type by the suction pile are mixed. Also, the triple floating body is vertically lifted and moved, and can be easily installed on the sea by seawater ballasting and suction work of the third seabed floating body and a second seawater floating body to reduce installation costs of the floating platform on the sea.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating platform having a triple-layered fluid and a method of constructing the floating platform.

The present invention relates to a floating platform for a floating structure, and more particularly, by forming a floating platform with a triple-flooded fluid, it is possible to control the motion of the floating platform under the load applied by wind and wave, To a floating platform having a triple-layered fluid and a method of construction thereof.

Until recently, offshore wind power generation system has been developed as a fixed platform installed mainly in shallow water depth, but the development of offshore wind power generation system is gradually being demanded even in a deep water area far from the coast, Platform wind turbine power generation system is being developed. This float platform can be selected to have the lowest production, installation, and operation cost, based on the characteristics of the sea area to be installed and the stability of the offshore wind power structure and securing the functionality of offshore wind power generation system.

Such offshore structures such as offshore wind power structures are subject to large and various environmental loads such as algae and waves in addition to wind, as compared with land structures. Such offshore structures can be roughly divided into fixed platforms and floating platforms.

Among these marine structures, the fixed structure is a type in which the marine structure is directly fixed to the seafloor like the land structure, and the environmental load is corresponding to the structural deformation. Also, the floating structure floats on the sea surface, .

Specifically, the fixed structure is fixed on the sea floor, thereby providing favorable operating conditions. However, if the water depth is deepened, the size of the offshore structure becomes excessively large and the risk of fatigue failure becomes difficult to avoid. In addition, floating structures are not limited by the size of the offshore structure even when the depth of water is deep, but it is difficult to secure operating conditions by performing 6-degree-of-freedom motion and nonlinear drifting motion by external forces such as wave, You should use exercise to suppress or compensate.

The type of floating structure can be classified into a pontoon structure, a pillar structure, and a tension moor structure according to the generation mechanism of the stability that maintains the posture when the floating body receives an external force.

Figure 1 is a diagram illustrating various forms of a typical floating offshore windpower platform.

When the floating body is tilted like the principle of stability of a ship, buoyancy of the tilt side increases, buoyancy of the opposite side decreases, and a restoring moment is generated. Since the pontoons are floated above sea level, they are very influenced by waves and are suitable for relatively warm water areas. Among these pontoon-type structures, one of the typical formats for receiving less influence of waves is a semi-submersible type platform. Such a semi-submerged platform is a type in which a platform is connected to a submerged submerged portion and a plurality of columns as shown in the center of FIG. 1, and the repair area is very small as compared with a floating structure such as a general ship. In addition, since the projected area is small, the load is small and the large structure of the drainage is submerged in the seawater, the vertical motion is reduced, and resonance with the wave is avoided.

In addition, the tensile mooring structure is a type that combines the seabed and the buoyant body with elongated elastic members to generate restoring force by its rigidity. A representative type of these structures is a tension leg platform (TLP). As shown in the left side of FIG. 1, the tensile angular platform (TLP) is formed by a plurality of steel wires or steel pipes connected to the sea floor to maintain a constant position. The structure of the tensile angular platform is similar to that of the semi-submersible platform described above, and is designed to receive less load. At this time, by pulling the steel wire down to a position slightly lower than the static equilibrium position, Tensile force due to surplus buoyancy is applied. Thus, the tensile mooring structure is designed to return to its original position due to its restoring force even if it undergoes horizontal movement. By transferring the ripple acting on the float through the tension mooring member to the foundation of the sea floor, .

As a columnar structure, a representative structure is a relatively recently proposed spar platform. As shown in the right side of Fig. 1, a structure in the form of a cylinder is arranged vertically, and a platform is installed on the columnar structure The stability is obtained by placing the center of gravity under the buoyancy center, and a flexible mooring device or a tension mooring device is installed to maintain the position.

In other words, offshore wind power structures that can obtain high quality wind power energy compared to offshore wind power structures are mainly composed of submarine ground fixed wind farms. However, due to economical installation cost and higher quality wind energy Spill type, TLP type, semi-submerged type are being developed in the floating type.

Although a number of formats for a floating platform according to the prior art have been proposed, there is a need to minimize the motion of the floating platform for such floating offshore wind power generation, and it is not easy to control the motion of the floating platform under the wave load, There is a problem that the size and weight of the expression platform must be increased.

When the above-described tension mooring method is used, excessive buoyancy is generated on the floating base when the sea level rises excessively, thereby causing an excessive tensile force to the mooring line and the anchor, resulting in breakage of the mooring line, In addition, due to the underseal sea level, floating buoyancy may be generated on the floating base, which may cause the floating base to fail.

Korean Patent No. 10-1192659 discloses an invention entitled "Floating Foundation for Wind Power Generator" as a prior art for solving the problems of using the above-described tension mooring method, .

2 is a view showing a state of a floating structure of a wind turbine for a wind power generator according to the prior art.

2, a floating base for a wind power generator according to the related art includes a columnar buoyant body 10, a platform 20 provided on the columnar buoyant body 10, a ballast 30, A mooring line 50 which lifts the columnar buoyant body 10 to the sea floor, an elevating device 60 and an elevating device 60 move up and down together with the flange 40, And a balancing buoyant body (70).

The columnar buoyant body 10 is a cylinder-shaped structure in which air is filled. Most of the columnar buoyant body 10 is submerged in the lower part of the sea surface, and a part of the columnar buoyant body 10 is exposed above the sea surface. The columnar buoyant body (10) stands vertically with respect to the sea surface and provides buoyancy to support the columnar wind turbine.

The platform 20 is installed on the pillar-type buoyant body 10 to easily install the wind power generator. A tower is installed on the upper part of the platform 20, A rotor blade is installed.

The ballast 30 is a weight attached to the lower portion of the pillar-shaped buoyant body 10 for adjusting the depth of the pillar-shaped buoyant body 10, And it plays a role in obtaining stability.

The flange 40 is provided around the columnar buoyant body 10 and serves to support the mooring rope 50 and the elevating device 60.

The mooring rope 50 is for maintaining the position of the columnar buoyant body 10. A total of six mooring rods 50 are provided, three for each of the first mooring rods 51 and the second mooring rods 52. One end of the first mooring rope 51 is engaged with the flange 40 and the other end is fixed to the bottom surface by the anchor 53. One end of the second mooring rope 52 is coupled to the ballast 30 and the other end is fixed to the bottom surface by the anchor 53.

As the elevation of the sea level changes due to a difference in tide level only, influence of a large wave caused by a typhoon, etc., the elevating device 60 generates buoyancy that is excessive / (53) is damaged, or the movement of the floating base is increased by the buoyancy adjustment.

The lifting device 60 includes a stopper 61, a guide post 62, a carrier 63 and an elastic means 66. The carrier 63 moves upward and downward along the guide post 64, And has an extending portion 65 connecting a pair of flat plate portions 64 facing each other and a central portion of the flat plate portions 64. The through holes 62 are formed in the through-

The balancing buoyant body 70 includes a first balancing buoyancy body 71 fitted in between the flat plate portions 64 of the carrier 63 in the form of a donut and a second balancing buoyant body 71 extending in the sea surface direction from the upper surface of the first balancing buoyancy body 71 And a second balancing buoyant body 72 in the form of a column. The balancing buoyant body 70 functions to reduce lateral movement of the floating base and functions to adjust the buoyancy by moving up and down in combination with the elevating device 60.

According to the floating structure for a wind power generator according to the prior art shown in Fig. 2, the buoyant body is moved up and down in accordance with the height change of the sea surface to eliminate the high / low buoyancy, It is possible to prevent an excessive tensile force from being generated, and it is also possible to prevent the floating base from becoming ineffective due to an excessive buoyancy.

On the other hand, as another prior art, Korean Patent No. 10-1287519 discloses an invention named "floating offshore wind power generation structure ", which will be described with reference to Fig.

3 is a perspective view of a floating offshore wind power generation structure according to the prior art.

3, a floating offshore wind power structure according to the prior art includes a float 80, an auxiliary fluid 91, an anchor 92, a wire 93, a tower, a generator, and a rotating device.

The float 80 has a convex portion 81 whose upper portion is protruded in the front, rear, left, and right sides in a plan view, and the space between the convex portions 81 is formed by a concave portion 82 curved toward the center side do. In addition, the lower portion has a pointed shape in which the length of the outer circumferential surface gradually becomes smaller toward the lower portion. The lower portion of each convex portion 81 is formed with a convex lower portion convex outwardly on the side surface, And the float 80 is formed with a tank into which seawater flows.

This float (80) is formed in the form of a ballast tank, so that the buoyancy of the tilted side is increased as the ship is restored by filling the seawater therein, and the buoyancy of the opposite side is decreased to generate a restoring moment, It is possible to stably support the structure. More specifically, it is possible to stably support the upper tower and the like even in the case of rolling rolling swaying from side to side with external forces due to waves or winds and pitching swinging back and forth.

The auxiliary fluid (91) is detachably installed in the lower portion of the float (80). Since the lower portion of the float 80 has a constant diameter, the diameter of the lower portion of the float 80 is gradually decreased. Therefore, a hole may be formed at the center of the auxiliary portion fluid 91, Grooves and projections engaging with each other may be formed on the outer circumferential surface of the auxiliary fluid 80 and the inner circumferential surface of the center hole of the auxiliary fluid 91 to be attached and detached. Unlike the float 80, the auxiliary fluid 91 may be composed of lightweight styrofoam or various well-known buoys such as an empty hollow.

According to the floating type offshore wind power generation structure according to the prior art shown in FIG. 3, existing structures are made up of pillars vertically installed on the sea surface. Unlike the structure in which the wings are supported in a tower form having two frames on both sides thereof , The generator is installed in both frames and the shape of the float reduces the resistance to the waves so that it can safely support the wind power structure at the offshore winds and waves. In addition, the buoyant is formed as a ballast tank to increase the buoyancy of the tilted side as the ship is restored, and the buoyancy on the opposite side is decreased, and the restoration moment is generated, so that the structure can be stably supported even when the wind is blowing and the wave is high. In addition, the towers can be easily moved to the tugboat while assembling all or part of the towers in the float during the transportation and installation, and can be installed easily.

As described above, semi-submersible, spar type and TLP (Tension Leg Platform) types are mainly applied as floating platforms.

Since the semi-submersible type uses a radial mooring system for location maintenance and its center of gravity is located at sea level, it is affected by wave. Therefore, in order to reduce the motion of the floating platform, There is a problem of increasing the size and weight of the platform.

The spar type is a structure made up of one column. Its behavior is similar to that of semi-submersible, and the principle of lowering the center of gravity of the floating platform is used. In order to lower the center of gravity of the floating platform It can be applied only to a large water depth region of 120 m or more.

The TLP type adopts the principle of reducing the motion of the floating platform by the tension force of the mooring line by adopting the tension line type mooring system by the sea floor anchoring. However, the installation cost of the anchoring which receives a large drawing load There is a problem.

In order to fix the floating platform to the sea floor, mooring line and bottom surface anchoring are required. However, the anchoring of undersea surface, which is essential for underwater work, is costly, which lowers the economical efficiency of floating offshore wind power generation. Has been pointed out. In addition, the caterpillar mooring line, which is generally applied to a floating offshore wind power generation platform, has been pointed out as a problem that is caused by the problem of marine area licensing and business feasibility by occupying a relatively large area of the sea floor.

Korean Patent No. 10-1192659 filed on August 10, 2010, entitled "Floating Foundation for Wind Power Generation Device" Korean Patent No. 10-1287519 filed on May 31, 2013, entitled "Floating Offshore Wind Power Generation Structure" Korean Patent No. 10-1201476 filed on October 14, 2010, entitled "Floating Offshore Wind Power Plant" Korean Patent No. 10-1616826 filed on Aug. 27, 2014, entitled "Floating structure including mooring device" Korean Patent No. 10-1753499 filed on Nov. 5, 2013, entitled "Floatable Transport and Installation Structure for Floating Wind Turbine Transport and Installation, Floating Wind Turbine and Its Transportation, How to install " Korean Patent Laid-Open Publication No. 2013-46192 (Published on May 7, 2013), entitled "Marine floating structures and floating floating wind power generation devices using the same" Korean Patent Laid-Open Publication No. 2015-76745 (Published on Jul. 7, 2015), entitled "Floating Wind Power Generator and its Installation Method" Korean Patent Laid-Open Publication No. 2016-44241 (Publication date: April 25, 2016), title of the invention: "Substructure of floating wind power generation device" Japanese Patent No. 5,670,128 filed on Sep. 3, 2010, entitled "Method for Construction of Flux Structures and Offshore Facilities for Offshore Facilities" Japanese Laid-Open Patent No. 2012-045981 (published on Mar. 8, 2012), entitled "Float Structure"

Technical Solution According to an aspect of the present invention, there is provided a floating platform having a triple-fluid structure, which can easily control a motion of a floating platform under a load applied with wind and wave, A floating platform having a float and a method of construction thereof.

Another object of the present invention is to provide an anchoring method in which a seawater is filled with seawater and a gravity type weight based on the weight of the third stage bottom surface fluid and a suction type mixed with a suction type by a suction pile, Floating platform with triple-layered fluid and an installation method thereof, which can easily install anchoring on the bottom of the sea while overcoming the above-mentioned problems.

Another object of the present invention is to provide a method and apparatus for lifting a triple-fluid in a vertical direction and installing it in the sea easily by seawater ballasting and suction of a fluid in the third stage submarine fluid and second stage water. A floating platform having a triple-layered fluid, and a method of construction thereof.

As a means for achieving the above-mentioned technical object, a floating platform with a triple-float according to the present invention comprises an annular float having a first central opening and a first central opening of the annular float, A first stage sea surface fluid, which is composed of a columnar floater to be joined and located on the sea surface to take charge of buoyancy of the floating structure; Wherein the second central opening is located in the seawater by partial seawater ballasting with the columnar suspension of the first stage sea level fluid inserted into the second central opening, A float among the second-stage seawater which blocks the motion of the first-stage sea level fluid when the shaking of the first-stage sea level surface occurs; And an annular floating body having a third central opening h3, and a third stage bottom surface fluid which is subjected to seawater ballasting and is submerged by the seafloor to be located on the sea floor and serves as an anchor for gravity anchorage.

Here, the mooring line further includes a mooring line connecting the first stage sea level fluid, the second stage sea water, and the third stage bottom surface fluid in a vertical direction along a plurality of through holes formed in each of the first stage sea surface fluid, the second stage sea water, The mooring lines connecting the sea level fluids can control the motion of the floating platform by connecting them through the first stage sea level fluid.

The floating platform having the triple-layered fluid according to the present invention is characterized in that the floating platform attached to the bottom surface of the third-stage bottom surface fluid and the third-stage bottom- You can include additional files.

Here, the bottom surface anchoring can be provided by an anchoring method in which gravity type anchoring due to the weight of the third stage bottom surface filled with seawater by seawater ballasting and suction type anchoring by the suction file is mixed.

Here, the mooring line connects the third-stage bottom surface fluid with the lower end of the column bottom fluid of the first-stage sea-floor fluid, so that the tensile force acting on gravity anchoring by the third- As shown in FIG.

The second stage sea level fluid is positioned to be inserted into the columnar float bottom of the first stage sea level fluid.

Here, the annular float of the first-stage sea level fluid, the float of the second-stage seawater, and the third-stage bottom surface fluid may be formed to have a circular, triangular, rectangular, pentagonal, hexagonal or octagonal cross section .

Here, the annular float of the first-stage sea level fluid, the float of the second-stage seawater, and the third-stage bottom surface-side fluid flow upwardly and downwardly through the columnar float of the first- They can be stacked and moved to the installation position by lifting the integrated floating platform.

According to another aspect of the present invention, there is provided a method of constructing a floating platform having a triple-float, comprising the steps of: a) providing a first stage sea level fluid, a second stage sea level fluid, The three-stage submerged fluid of the three-stage bottom submerged fluid is produced onshore, and the submerged fluid of the second-stage seawater and the third-stage submerged floater are inserted around the columnar float of the first- ; b) moving the float in the first stage sea level fluid, the float in the second stage sea water and the fluid in the third stage bottom surface in a vertical direction so as to lift up the integrated floating platform to the floating platform installation position; c) performing seawater ballasting into the third stage underside fluid at the floating platform installation location and immersing the third stage bottom surface fluid at the bottom surface; d) penetrating into the bottom of the seabed using a suction pile attached to the bottom of the third bottom seafloor located on the sea floor to form anchoring; e) performing partial seawater ballasting within the float of the second stage seawater to place the float in the second stage seawater in seawater; And f) tensioning the mooring line previously connected to the triple-fluid when the installation of the floating platform is completed to firmly connect the triple-fluid to each other.

According to the present invention, it is possible to easily control the motion of the floating platform under the load in which the wind and the wave act, by forming the floating platform with the triple-fluid, and thus the motion control of the existing floating platform is easy The problem of the size and weight of the floating platform need to be increased and the floating platform can be slimmed down.

According to the present invention, the gravity type gravity weight of the third stage bottom surface fluid filled with seawater by seawater ballasting, and the anchoring method in which the suction equation is mixed with the suction pile, overcomes the disadvantages of the weak suction pile, Face anchoring can be installed.

According to the present invention, the triple-fluid can be lifted and moved in the vertical direction, and can be easily installed in the sea by the seawater ballasting and suction of the float in the third-stage underside fluid and the second- The cost of installing the marine platform on the platform can be reduced.

Figure 1 is a diagram illustrating various forms of a typical floating offshore windpower platform.
2 is a view showing a state of a floating structure of a wind turbine for a wind power generator according to the prior art.
3 is a perspective view of a floating offshore wind power generation structure according to the prior art.
4 is a view for explaining the operation principle of a floating platform having a triple float according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a first stage sea level fluid, a second stage sea phase, and a third stage underside fluid of a floating platform with a triple float according to an embodiment of the present invention.
Figure 6 is a top view illustrating various forms of annular float in a floating platform with a triple float according to an embodiment of the present invention.
7 is a diagram illustrating blocking motion of the first stage sea level fluid by the float in the second stage seawater in a floating platform with a triple float according to an embodiment of the present invention.
8 is a flowchart illustrating a method of constructing a floating platform having a triple-layered fluid according to an embodiment of the present invention.
FIGS. 9A to 9D are views for explaining a method of constructing the floating platform having the triple-layered fluid shown in FIG. 8, respectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Floating platform 100 with triple fluids]

4 is a view for explaining the operating principle of a floating platform having a triple-layered fluid according to an embodiment of the present invention, wherein FIG. 4 (a) is a sectional view and FIG. 4 (b) is a perspective view.

In a floating platform 100 with a triple float according to an embodiment of the present invention, as shown in FIG. 4, the triple float is divided into a first-stage sea level fluid 110, a second- (120) and a third stage bottom surface fluid (130), wherein the first stage sea level fluid (110) is located on the sea surface and the float (120) of the second stage sea water And the third stage bottom surface fluid 130 is installed to be positioned on the sea bed surface, respectively.

The first stage sea surface fluid 110 supports the wind turbines of a offshore structure, for example an offshore wind power structure, while securing buoyancy to float on the sea.

The float 120 in the second stage seawater is positioned in the seawater by suitable seawater ballasting and serves to prevent the first stage sea level fluids 110 from vibrating due to the power generation and wave of the wind turbine do. Since the float 120 in the second stage seawater is located in the seawater, the motion of the first stage sea level fluids 110 can be detected at a low center of gravity similar to the principle of the spar platform described above. It can be easily blocked.

At this time, the motion of the float 120 in the second stage seawater can be controlled through the mooring line 140 connected to the third stage bottom surface fluid 130 as shown in the figure. The mooring line 140 connected to the first stage sea level surface fluid 110 may be connected to the first stage sea level surface fluid 110 to improve the motion control effect of the floating platform.

As shown in FIG. 4A, the third stage bottom surface fluid 130 is attached to the bottom surface of the suction file 150 and can be penetrated into the bottom surface of the bottom surface. At this time, the seawater ballasting is performed inside the third-stage bottom surface fluid 130 so that the third-stage bottom surface fluid 130 is submerged on the bottom surface, and then a small suction file 150 ) To penetrate the bottom of the sea and use it as an anchoring.

At this time, although the suction pail 150 is weak in pulling force, the pulling force can be reduced by the weight of the third stage bottom surface fluid 130. In other words, the anchorage of the gravity type by the weight of the third stage bottom surface fluid 130 combined with the suction type by the suction pile 150 can overcome the disadvantage of the weak suction pile, Anchorage can be installed on the sea floor.

As shown in FIG. 4B, the third stage bottom surface fluid 130 is connected to the lower end of the first end surface water surface fluid 110, that is, The tensile force acting on the anchoring of the third stage bottom surface fluid 130 acts as a diagonal line, thereby making it possible to compensate for the disadvantage of the anchoring of the suction file 150 weak in tensile force.

In addition, the annular float 111 of the first stage sea-surface fluid 110, the float 120 of the second stage water, and the third stage bottom surface fluid 130 are connected to the first- The float platform 100 can be moved to the installation position by lifting the integrated floating platform 100 stacked vertically through the columnar float 112 of the fluid 110.

FIG. 5 is a view illustrating a first stage sea surface fluid, a second stage sea water fluid, and a third stage bottom surface fluid of a floating platform having a triple fluid according to an embodiment of the present invention, Fig. 5 (a) is a cross-sectional view showing the first stage sea surface fluid, Fig. 5 (b) is a perspective view showing the float in the second stage seawater, and Fig. Sectional view.

Referring to FIG. 5, a floating platform 100 having a triple-float according to an embodiment of the present invention includes a first-stage sea level fluid 110, a second-stage seawater 120, The bottom surface of the third stage bottom surface fluid 130 is connected to a plurality of suction pads 150. The bottom surface of the third bottom surface side fluid 130 is connected to the bottom surface of the third bottom surface fluid 130.

The first stage sea surface fluid 110 is formed by annular fluids 111 having a first central opening h1 and a second central openings h1 of the annular float 111, and a columnar float 112 which is inserted through the columnar float h1 and joined to the columnar float 112 for buoyancy of the marine structure, A tower connection portion (TP) 113 may be installed. Here, it is preferable that the annular float 111 and the columnar float 112 are welded to one structure by welding or the like during fabrication. Here, the annular float 111 may be formed in various shapes such as a circular shape and a polygonal shape, as shown in FIG. 6 to be described later.

The float 120 in the second stage seawater is constituted by an annular floating body having a second central opening h2 as shown in Figure 5b) (110) is inserted and is located in the seawater by partial seawater ballasting, and when the first-stage sea level fluid (110) is shaken, the first-stage sea level fluid (110) 110). Here, the annular fluid of the float 120 in the second-stage seawater can be formed into various shapes such as a circular shape, a polygonal shape, and the like, as shown in FIG.

The third stage bottom surface fluid 130 is constituted by an annular floating body having a third central opening h3 as shown in Fig. 5 (c), and is subjected to seawater ballasting to be submerged by the seabed, It acts as gravity type anchoring. Suction piles (150) are attached to the bottom surface of the third stage bottom surface fluid (130) and can be penetrated into the sea floor. At this time, the seawater ballasting is performed inside the third-stage bottom surface fluid 130 so that the third-stage bottom surface fluid 130 is submerged on the bottom surface, and then a small suction file 150 ) To penetrate the bottom of the sea and use it as an anchoring.

At this time, although the suction pail 150 is weak in pulling force, the pulling force can be reduced by the weight of the third stage bottom surface fluid 130. In other words, it is possible to simplify the installation by overcoming the disadvantages of the suction pile 150 which is weak in pulling out by the anchoring in which the gravity type and the suction type are mixed by the coupling of the third stage bottom surface fluid 130 and the suction pile 150.

Referring to FIG. 4, the mooring line 140 includes a plurality of mooring lines 140 and a plurality of second mooring lines 140, And are connected to each other in the vertical direction along the plurality of through holes formed. These mooring lines 140 can be connected to each other in a vertical direction along a plurality of through holes formed in each of the triple-layered fluids 110, 120, and 130, thereby reducing the seabed area occupied area. Accordingly, although the catenary mooring line that is applied to a general floating platform occupies a relatively large sea floor area, according to the floating platform 100 with the triple float according to the embodiment of the present invention, As the area is reduced, it is possible to solve the problem of accepting the maritime area and the problem of deteriorating the business.

4, by connecting the third stage bottom surface fluid 130 in a diagonal direction to the lower end of the column fluid 112 of the first end surface water surface fluid 110, that is, By making the tensile force acting on the anchoring of the third stage bottom surface fluid 130 to act as an oblique line, it is possible to compensate the disadvantage of the anchoring of the suction file 150 weak in the tensile force.

6 is a plan view illustrating various forms of an annular float in a floating platform with a triple float according to an embodiment of the present invention, wherein the annular float 111 of the first stage sea- The float 120 in the second-stage seawater, and the third-stage seawater-filled fluid 130 may be formed in substantially the same circular or polygonal shape, respectively. Specifically, The hexagon shown in FIG. 6B, the triangle shown in FIG. 6C, the pentagon shown in FIG. 6D, the hexagon shown in FIG. 6E, and the octagon shown in FIG. And a through hole through which the mooring line passes can be formed.

7 is a diagram illustrating blocking motion of the first stage sea level fluid by a float in the second stage seawater in a floating platform with a triple float according to an embodiment of the present invention.

7, in a floating platform with a triple-float according to an embodiment of the present invention, the central opening h2 of the float 120 in the second- It is possible to prevent the motion of the robot 110.

As a result, according to the floating platform 100 having the triple float according to the embodiment of the present invention, by forming the floating platform with the triple float, the motion of the floating platform It is easy to control, and the bottom surface anchoring can be easily installed.

[Method of Construction of Floating Platform with Triple Fluid]

FIG. 8 is an operational flowchart showing a construction method of a floating platform having a triple float according to an embodiment of the present invention. FIGS. 9A to 9D are views showing the operation of the floating platform with the triple float shown in FIG. These drawings are for explaining the construction method in detail.

Referring to FIG. 8, a method for constructing a floating platform having a triple-float according to an embodiment of the present invention includes first stage sea level fluids 110, second stage seawater fluids 120, After the triple bottom fluid of the third stage bottom surface fluid 130 is produced onshore, the center of the columnar float 112 of the first stage sea surface fluid 110 as shown in FIG. The float 120 and the third stage bottom surface fluid 130 in the second stage seawater are floated so as to be inserted in the sea (S110).

The floating platform 100 is formed by stacking the first stage sea level fluid 110, the second stage sea water fluids 120 and the third stage bottom surface fluid 130 in the vertical direction. And moves to the installation position of the floating platform 100 (S120).

Next, as shown in FIG. 9B, while the seawater ballasting is performed inside the third-stage bottom surface fluid 130 at the installation position of the floating platform 100, the third- (S130).

Next, an anchoring is formed by penetrating into the bottom of the seabed using the suction pile 150 attached to the bottom of the third bottom seafloor 130 located on the sea floor (S140).

Next, seawater ballasting is partially performed inside the float 120 of the second-stage seawater to place the float 120 in the second-stage seawater in the seawater. Specifically, as shown in FIG. 9C, the first end 201 is positioned to be inserted into the lower end of the columnar float 112 of the first end 201 (S150).

Next, when the floating platform 100 is completed, the mooring line 140 previously connected to the triple-fluid 110, 120, and 130 is pulled so that the triple-fluid 110, 120, (S160). 9D, a mooring line 140 connecting the first stage sea level surface fluid 110 is connected to the floating platform 100 through the first stage sea level surface fluid 110, It is possible to further improve the motion control effect of the image pickup device.

As a result, according to the embodiment of the present invention, the columnar float 112 of the first stage sea level fluid 110 is inserted into the center opening of the float 120 in the second stage sea water, The float 120 in the second-stage seawater can prevent and reduce motion when the fluid 110 is shaken.

In addition, according to the embodiment of the present invention, since the suction port 150 is attached to the bottom surface of the third stage bottom surface fluid 130, the third bottom surface bottom surface fluid 130 penetrates the bottom surface and can be used as an anchoring. At this time, the gravity anchoring due to the heavy weight of the third stage bottom surface fluid 130 filled with seawater by the seawater ballasting and the suction anchoring with the suction pile mixed with the suction pile are mixed, It is possible to utilize the advantage of a suction file which can be easily installed at sea.

According to an embodiment of the present invention, the tribo fluids 110, 120, and 130 are lifted in the vertical direction and the sea water ballast of the third stage bottom surface fluid 130 and the float 120 in the second stage water, And can be easily installed in the sea by suction and suction, thereby reducing the installation cost of the floating platform 100 in the sea.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Floating platform with triple fluid
110: First stage sea surface fluid
120: Secondary float in seawater
130: Third stage submarine fluid
140: Mooring line
150: Suction file
111: annular float
112: columnar float

Claims (14)

In a floating platform with float,
And a columnar float (112) inserted through the first central opening (h1) of the annular float (111) and rigidly joined to the annular float (111) having a first central opening (h1) A first-stage sea level superfluid (110) located on the sea surface for buoyancy of the structure;
Wherein the columnar float 112 of the first stage sea level fluids 110 is inserted into the second central opening h2 to form a partial seawater ballasting (120) located in the seawater by the first stage sea-surface fluid (110) to prevent motion of the first stage sea-surface fluid (110) when the first stage sea-level fluid (110) And
And a third stage bottom surface fluid (130) which is composed of an annular floating body having a third central opening (h3) and which performs seawater balusting to be submerged by the sea floor and located on the sea floor and serves as gravity type anchoring Floating platform with triple fluid. The method according to claim 1,
A mooring line (not shown) that interconnects the plurality of through holes formed in each of the first stage sea level surface fluid 110, the second stage sea water fluid 120, and the third stage bottom surface fluid 130, The mooring line 140 connecting the first stage sea level fluids 110 is connected to the first stage sea level fluids 110 and connected to each other by the motion of the floating platform 100, And a control unit for controlling the operation of the floating platform. The method according to claim 1,
And a suction file 150 attached to a lower surface of the third stage bottom surface fluid 130 and penetrating the third surface bottom surface fluid 130 to the sea bed surface to serve as a suction anchoring Floating platform with triple fluid. The method of claim 3,
The bottom surface anchoring may be performed by an anchoring method in which gravity type anchoring due to the weight of the third stage bottom surface fluid 130 filled with seawater by seawater ballasting and suction type anchoring by the suction pile 150 is mixed Floating platform with triple float feature. 5. The method of claim 4,
The mooring line 140 connects the third end seafront surface fluid 150 with the lower end of the columnar fluid 112 of the first end surface water surface fluid 110, (150) acts as a diagonal line to cause tensile force acting on gravity anchoring to act as a diagonal line. The method according to claim 1,
Wherein the second stage sea level fluids (120) are positioned to be inserted into the columnar float (112) of the first stage sea level fluids (110). The method according to claim 1,
The annular float 111 of the first stage sea level fluid 110, the float 120 of the second stage water and the third stage bottom surface fluid 130 may be circular, triangular, rectangular, pentagonal, Wherein the first, second, third, and fourth portions are formed to have a hexagonal or octagonal cross-section. The method according to claim 1,
The annular float 111 of the first stage sea level fluid 110, the float 120 of the second stage water and the third stage bottom surface fluid 130 are connected to the first stage sea level fluid Wherein the float platform (100) is piled up vertically through the columnar float (112) of the floating platform (110) and moved to the installation position by lifting up the integrated floating platform (100). A method of constructing a floating platform with floating,
a) Threefold fluids 110, 120 and 130 of the first stage sea level fluids 110, the second stage seawater fluids 120 and the third stage bottom surface fluids 130 are produced onshore And float in the sea so as to insert the float 120 and the third stage bottom surface fluid 130 in the second stage water centering on the columnar float 112 of the first stage sea level fluid 110 step;
b) The floating platform 100, which is formed by stacking the first stage sea level surface fluid 110, the second stage seawater float 120 and the third stage bottom surface fluid 130 in the vertical direction, Moving the platform to a floating platform mounting position;
c) performing seawater ballasting from the installation position of the floating platform (100) into the third stage bottom surface fluid (130) while placing the third stage bottom surface fluid (130) on the bottom surface step;
d) penetrating into the bottom of the seabed using a suction pile 150 attached to the bottom of the third bottom seafloor 130 located on the sea floor to form anchoring;
e) partially flooding the interior of the float (120) of the second stage seawater to place the float (120) in the second stage seawater in seawater; And
f) When the installation of the floating platform 100 is completed, the mooring line 140 previously connected to the triple fluids 110, 120, and 130 is pulled so that the triple fluids 110, 120, Wherein said step (c) comprises rigidly connecting said triple-fluid. 10. The method of claim 9,
Wherein the float (120) in the second stage seawater is positioned to be inserted into the lower end of the columnar float (112) of the first stage sea level fluid (110) in step (e) A method of constructing a floating platform. 10. The method of claim 9,
The mooring line 140 connecting the first stage sea level surface fluid 110 in the step f) is connected to the first stage sea level surface fluid 110 so as to control the motion of the floating platform 100 Wherein the first and second troughs are spaced apart from each other. 10. The method of claim 9,
The bottom surface anchoring may be performed by an anchoring method in which gravity type anchoring due to the weight of the third stage bottom surface fluid 130 filled with seawater by seawater ballasting and suction type anchoring by the suction pile 150 is mixed Wherein the floating platform has a triple layer structure. 13. The method of claim 12,
In the step f), the third stage bottom surface fluid 150 is connected to the bottom end of the column bottom fluid 112 of the first end surface water surface fluid 110 by diagonal lines, Wherein the tensile force acting on the gravity anchoring by the gravity anchor is caused to act as a diagonal line. 10. The method of claim 9,
The annular float 111 of the first stage sea level fluid 110, the float 120 of the second stage water and the third stage bottom surface fluid 130 may be circular, triangular, rectangular, pentagonal, Wherein the first and second troughs are formed to have a hexagonal or octagonal cross-section.

Images