KR20170004892A - floatable legged platform structure, building and opperation method thereof - Google Patents

Abstract

The present invention is characterized in that a platform performing storage of a cargo or regasification, or power generation is floated on the sea when moved by a selective floating structure and is fixed to a legged structure when not moving, thereby shipbuilding can be easily and simply carried out and also a mobile installation can be possible when necessary.

Description

[0001] The present invention relates to a legged platform, a method of constructing the legged platform,

The present invention relates to a selective-type legged platform structure, and more particularly, to an LNG regasification facility adjacent to the land, which facilitates maritime installation, The present invention relates to a new type of leg type platform equipment, a drying method thereof, and a method of operating the same.

Generally, Liquefied Natural Gas (LNG) is stored in a cryogenic container while maintaining a liquid state at atmospheric pressure or higher, and is converted into a gas phase by regasification.

However, for safety reasons, LNGS (Liquefied Natural Gas Carrier), LNG RV (Liquefied Natural Gas Regasification Vessel) and LNGS (LNGS) are generally installed in the sea near the land for safety reasons. And LNG FPSO (Liquefied Natural Gas Floating Production Storage and Off-loading), which are installed in floating structures including ships and marine structures such as Liquefied Natural Gas Floating Storage and Regasification Unit (FSRU) and LNG FPSO (Liquefied Natural Gas Floating Production Storage and Off-loading).

Regarding this, it is described in Korean Patent Publication No. 10-2010-0133272, Korean Patent No. 10-0888339, Korean Patent Publication No. 10-2007-0085870, Korean Patent No. 10-1018741, 1185872, and the like.

However, the above-mentioned floating marine structure has a problem that it is difficult to operate the equipment continuously and continuously because it is affected by the weather and waves during its installation at sea.

Particularly, in order to solve the above-mentioned problem, there has been a problem in that a separate breakwater must be additionally installed around the re-circulation facility or fixedly fixed to a specific position by using a pull wire or the like, thereby requiring a lot of facility cost.

Accordingly, there is a growing demand for an installation structure capable of ensuring the continuity of facility operation according to the weather condition, and a drying method thereof, to solve the instability of the floating storage regeneration facility.

Korean Patent Laid-Open No. 10-2010-0133272 Patent No. 10-0888339 Korean Patent Publication No. 10-2007-0085870 Patent No. 10-1018741 Patent No. 10-1185872

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquefied natural gas (LNG) regeneration facility adjacent to the land, A new type of leg-type platform equipment, which is provided in a form that can be used to stabilize the sea floor and float if necessary, utilizing the lower leg structure and buoyancy tank, but also to act as a practical breakwater. And a method for drying and operating the same.

According to an aspect of the present invention, there is provided a leg type platform system for a vehicle, comprising: a platform for performing storage, re-generation, or power generation of a cargo at sea; A concrete structure installed on the sea floor facing the platform; And a leg connected at one end to a lower portion of the platform and connected at the other end to an upper portion of the concrete structure.

Here, an LNG tank is provided below the platform.

A void space of a predetermined height is provided between the platform and the LNG tank.

Also included is a buoyancy tank which is provided in the form of wrapping around the lower and peripheries of the LNG tank and storing the ballast water.

Further, the present invention includes a ballast pump for supplying ballast water to the buoyancy tank, wherein the ballast pump is disposed on both sides of the LNG tank.

In addition, the legs may have a length adjustable structure.

The plurality of legs are connected to each other at the same height in accordance with the water depth between the lower portion of the platform and the upper portion of the concrete structure.

According to another aspect of the present invention, there is provided a leg-type platform device for a selective-type platform, comprising: a platform for performing storage, re-generation, or power generation of a cargo at sea; A selective floating structure provided on the platform, floating on the sea when the platform is moved, and sinking on the seabed at the same time as the platform; And a leg structure positioned at a lower portion of the platform and seated on the sea floor.

The platform includes an LNG tank in which LNG is stored, and a regeneration unit provided in the upper portion of the LNG tank to regenerate the LNG in the LNG tank.

In addition, the selective floating structure is disposed on the bottom surface of the platform, and the ballast water is charged at the same time as the ballast water is supplied as a weight, and when the platform is moved, the ballast water is discharged and provided as a buoyant body. A pump chamber which is located at one side of the main buoyancy tank and is equipped with a pump for charging or draining the ballast water in the main buoyancy tank and a guide duct for guiding the filling or drainage flow of the ballast water .

In addition, the main buoyancy tank of the selective floating structure is divided into an upper buoyancy tank and a lower buoyancy tank, and a column is further provided between the upper buoyancy tank and the lower buoyancy tank.

In addition, the column is formed with a plurality of through holes for eliminating the wave resistance.

In addition, the upper surface of the main buoyancy tank of the selective floating structure is formed so as to be positioned higher than the water level during low tide and high tide.

Further, the upper surface of the pump chamber is positioned higher than the wave height of the corresponding area, and a hatch for an operator to enter the pump chamber is provided on the upper surface of the pump chamber.

Further, a side buoyancy tank and a trim tank are further provided around the platform.

In addition, the leg structure may include an auxiliary buoyancy tank that stores ballast water to assist floating of the platform while being laid on the seabed surface, or the ballast water is emptied and provided to the buoyant space, And a plurality of legs on which the selective floating structure is placed.

In addition, each of the legs is formed with a plurality of through holes for eliminating wave resistance.

Further, a mounting guide for guiding the seating of the selected floating structure is further provided on the upper outer surface of each of the legs.

Further, a rock layer is laid on the sea floor, and the leg structure is installed on the rock layer.

In addition, a fender for mooring the ship is further provided on the outer wall surface on the sea side of the platform.

According to another aspect of the present invention, there is provided a method of drying a leg type platform equipment for a selective part, the method comprising the steps of: (a) forming the leg connecting the lower part of the platform and the upper part of the concrete structure, ; (b) connecting one end of the leg to a lower portion of the platform; And (c) connecting the other end of the leg to an upper portion of the concrete structure.

In order to achieve the above-mentioned object, a method of operating a selector type legged platform facility according to an aspect of the present invention stably operates the platform fixed to a sea floor by the leg and concrete structures, And releasing the connection of the one end or the other end of the leg when the movement of the leg is required.

According to another aspect of the present invention, there is provided a method of drying a selective leg type legged platform facility, the method comprising the steps of: Placing a leg structure on an upper surface of the planarized portion; Discharging the ballast water in the main buoyant tank constituting the selective floating structure with the platform placed on the selective floating structure, floating the float water in the sea, and moving the floating structure to the place where the leg structure is located; And filling the ballast water in the main buoyancy tank constituting the selective floating structure so that the selective floating structure is placed on the leg structure while sinking the floating structure to the seabed.

In order to achieve the above-mentioned object, according to another aspect of the present invention, there is provided a method of operating a leg type platform equipment, comprising the steps of filling a ballast water in a main buoyancy tank and an auxiliary buoyancy tank, And when the platform is requested to move, the pump is driven to discharge the ballast water in the auxiliary buoyancy tank constituting the main buoyancy tank and the leg structure constituting the selected floating structure, ; Traversing the floating platform on the sea and moving it to a set point;

And filling the ballast water with the ballast water in the auxiliary buoyancy tank constituting the main buoyancy tank and the leg structure constituting the selective floating structure upon arrival at the set point.

In the selective-type legged platform system of the present invention as described above, the floating structure and the leg structure are fixed to the seabed while being locked to the seabed so that the platform is not affected by waves or wind So that the structural stability can be ensured and the rejuvenation operation and the power generation operation of the platform can be stably performed.

In particular, the selectable type legged platform of the present invention has the effect of not requiring a separate breakwater, in fact, considering the weight of the entire platform equipment, it functions as a breakwater installed adjacent to the coast.

In addition, since the selectable type legged platform equipment of the present invention is provided with a fender for mooring the ship on the sea side outer wall surface of the platform, the function of the berthing facility for mooring the ship can be additionally performed .

In addition, since the selective-type leg-platform equipment of the present invention can be used as a mooring facility itself, a separate mooring facility is not required, and it is possible to reduce the weight of the floating structure compared to the existing floating structure, It is easy to support electricity / fresh water / steam from the land, and additionally the function of the berthing facility for mooring the ship can be additionally performed by additionally installing the fender 160 I have.

In addition, since the leg-type platform equipment of the present invention is configured to be floated to the sea via de-ballasting if necessary, it can be manufactured at a place where production cost is low, such as a shipyard, And it is effective to move to another place after using it in one place and work is possible.

In addition, since the leg type platform of the present invention has a simple and simple structure change such as a height adjustment of each leg or a height adjustment of each leg when the water depth is different, an economical effect can be expected to be improved .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing a selector type legged platform equipment according to a first embodiment of the present invention; Fig.
2 is a plan view for explaining a selector type legged platform equipment according to the first embodiment of the present invention.
3 is a side view for explaining a selector type legged platform facility according to the first embodiment of the present invention
4 is a flowchart schematically showing a method of drying and operating a selector type legged platform facility according to a first embodiment of the present invention
5 is a front view showing a selector type legged platform equipment according to a second embodiment of the present invention.
6 is a plan view for explaining a selector type legged platform equipment according to a second embodiment of the present invention.
7 is a side view for explaining a selector type legged platform facility according to a second embodiment of the present invention
8 is a side view illustrating another embodiment of the selective floating structure among the selector type legged platform equipments according to the second embodiment of the present invention
FIG. 9 is a plan view of a selected floating structure among selected-type legged platform equipments according to a second embodiment of the present invention
Fig. 10 is a flowchart showing a process of drying and operating a selector type legged platform facility according to a second embodiment of the present invention
11 is a side view illustrating an example of column and leg configurations of a selector type legged platform facility according to another embodiment of the present invention
12 is a side view illustrating an example of column and leg configurations of a selector type legged platform facility according to another embodiment of the present invention;

Hereinafter, preferred embodiments of the selective part type legged platform installation of the present invention, the drying method thereof and the operation method thereof will be described with reference to FIGS. 1 to 12 attached hereto.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing a selector type legged platform equipment according to a first embodiment of the present invention, Fig. 2 is a side view showing a selector type legged platform equipment according to a first embodiment of the present invention FIG. 3 is a cross-sectional view illustrating a selector type legged platform apparatus according to the first embodiment of the present invention, and FIG. 4 is a plan view of the selector type legged apparatus according to the first embodiment of the present invention. A flowchart briefly showing a method of drying and operating the platform equipment.

1 to 3, a selector type legged platform arrangement according to a first embodiment of the present invention includes a leg structure 1, a platform 50, and legs 10 connected therebetween .

The platform 50 is a facility (or a facility) for storing and regenerating LNG at sea, and may be disposed at an upper portion of the LNG tank 30, and is preferably mounted through a predetermined Machinery Space , But is not limited thereto.

The concrete structure 5 is mounted on the sea floor facing the platform 50.

As a concrete example, the concrete structure 5 may be stably placed on the platform 50, more specifically, on top of the sea floor 1, facing the ballast water tank 20, as shown in Fig. 1 And the top surface at the same height can be provided in the form of a flat structure.

The leg 10 is a column-shaped member having one end connected to the lower part of the ballast water tank 20 and the other end connected to the upper part of the concrete structure 5.

The material of the legs 10 need not be particularly limited. However, it is preferable that the legs 10 have a structure in which the heavy loads of the platform, the cargo, and the ballast water tank 20 are supported at the upper portion of the concrete structure 5, It is preferable to have a material capable of securing the above-

The selected type legged platform equipment according to the first embodiment of the present invention is installed in the sea but is not a floating structure in the form of a barge as in the prior art but a fixed concrete structure 5 and legs 10 And can be floated by using the ballast water tank 20 (20a, 20c) if necessary.

Therefore, excellent stability can be ensured because it is not influenced by waves and wind, and safety can be secured in storage and regeneration of dangerous cargo LNG.

If necessary, the height of the concrete structure 5 can be adjusted. In addition, it is possible to provide a movable installation according to the variation of the depth of the water, and thus an economical advantageous effect can be expected.

Specifically, the LNG tank 30 may be provided below the platform 50.

A void space or void space 60 having a predetermined height may be provided between the LNG tank 30 and the machine space where the platform 50 is mounted. It is not limited.

Meanwhile, a ballast water tank 20 (20a, 20c) provided in a form to surround the lower portion and the periphery of the LNG tank 30 may be included. The ballast water tank 20 (20a, 20b, 20c) is a place where the ballast water is filled and stored. When the ballast water tank 20 (20a, 20b, 20c) So that buoyancy can be controlled.

For example, the ballast water tank 20 (20a, 20c) should be further provided with a ballast pump 21 (see FIG. 2) for controlling supply of ballast water.

As a preferred example, the ballast pump 21 (see FIG. 2) may have a structure in which the LNG tank 30 is disposed on both sides of the LNG tank 30, but the present invention is not limited thereto. This arrangement can be confirmed with reference to FIG.

Meanwhile, the leg 10 of the present invention preferably has a structure capable of adjusting its length, but is not limited thereto. For example, the legs 10 may be provided in the form of a module having a set length, and may be provided in a form in which a plurality of legs 10 can be connected to each other when a length is required to be extended according to the depth of the water. As another example, the leg 10 itself may have a structure that can be stretched and contracted (e.g., telescopic structure), and may be formed to extend its length along the water depth using various power sources (e.g., hydraulic pressure) And may have various other structures.

A plurality of the legs 10 may be disposed in the lateral direction between the ballast water tank 20 (20a, 20b, 20c) and the concrete structure 5. It is preferred that the plurality of legs 10 are connected to each other at the same height in accordance with the water depth between the lower portion of the platform 50 and the upper portion of the concrete structure 5.

Meanwhile, when movement of the platform 50 is required, one end of the leg 10 connected to the ballast water tank 20 (20a, 20b, 20c) is separated or a leg connected to the upper part of the concrete structure 5 10 can be separated from each other. Also, the leg 10 may have a structure in which one end and the other end of the leg 10 are separated from each other. As a result, the platform 50 can be floated with the ballast water tanks 20 (20a, 20b, 20c) and the LNG tank 30.

Accordingly, the selector unit type legged platform equipment according to the first embodiment of the present invention is secured to the sea floor, and can be structurally stable without being influenced by waves and wind.

In addition, since the selective portion type legged platform equipment according to the first embodiment of the present invention can be used as a mooring facility, a separate mooring facility is not required, and the structure can be lightened as compared with a conventional floating structure. And it is easy to support electricity / fresh water / steam from the land.

In addition, it can be moved by de-ballasting if necessary, so it can be installed in a place where production cost is low, such as shipyard, and can be moved and installed. After moving from one place to another, There are advantages.

In addition, it is easy to change the design. If the water depth is used in different places, it is possible to change the structure only by adjusting the height of the rail, so that the economical effect can be improved.

Next, a method of drying and operating a selector type legged platform equipment according to a first embodiment of the present invention will be described with reference to FIG. 4 attached hereto.

The drying method of the selector type legged platform equipment according to the first embodiment of the present invention may firstly perform step S10 of manufacturing the legs 10. It is preferable that the legs 10 are manufactured so as to have a length corresponding to the depth when the legs 10 are connected between the lower part of the platform 50 and the upper part of the concrete structure 5 in step S10.

Next, step S20 may be performed to connect one end of the leg 10 to the lower portion of the platform 50, for example.

Next, a step (S30) of connecting the other end (for example, a lower end portion) of the leg 10 to the upper portion of the concrete structure 5 may be performed.

In the method of operating the selective leg type leg platform equipment according to the first embodiment of the present invention, after the connection between the leg 10 and the concrete structure 5 is completed, the leg 10 and the concrete structure (S40) of stably operating the selector type legged platform fixture fixed to the sea floor by the controller 5 may be performed. However, there may be a case where it is necessary to move the selector type legged platform equipment. In this case, it is possible to float the concrete structure 5 after floating the platform 50 first, and to install the concrete structure 5 in a floating state.

5 to 12 show a selector type legged platform equipment according to a second embodiment of the present invention.

This is explained as follows.

5 is a front view for explaining a selector type legged platform equipment according to a second embodiment of the present invention, and FIG. 6 is a schematic view of a selector type legged platform equipment according to a second embodiment of the present invention. Fig. 7 is a side view for explaining a selector type legged platform facility according to a second embodiment of the present invention.

As shown in these drawings, the selector type legged platform apparatus according to the second embodiment of the present invention mainly comprises a platform 100, a selective floating structure 200 and a leg structure 300, At the same time, the platform 100 can be moved in a floated state by the selective floating structure 200 at the time of moving, while the fixed state can be maintained at the sea floor.

This will be explained in more detail for each configuration.

First, the platform 100 is a device that performs storage, re-generation, or power generation of a cargo at sea.

In the second embodiment of the present invention, the platform 100 is provided with an LNG tank 110 in which LNG is stored, and a regeneration unit 110 provided in the upper part of the LNG tank 110 to regenerate LNG in the LNG tank 110 And an apparatus 120 as an example.

Of course, the platform 100 may be composed solely of the LNG tank 110, a tank storing other cargo, or a facility constructed to perform a power generation operation.

In addition, the platform 100 is further provided with a side buoyancy tank 130 and a trim tank 140. The side buoyancy tank 130 and the trim tank 140 are tanks for maintaining the platform 100 in a horizontal position and a buoyant state at the same time when the side buoyancy tanks 130 are disposed on the front side of the LNG tank 110 (Right side in FIG. 7 and left side in FIG. 3), and the trim tank 140 is provided on both sides of the LNG tank 110 And are respectively installed on the wall surface (stern and bow part).

In addition, a void space 150 is provided between the LNG tank 110 and the regasification apparatus constituting the platform 100 so that the LNG tank 110 can be protected from an external impact when the platform 100 is moved. .

5 and 6, a fender 160 for mooring the ship is further provided on the outer side of the sea side of the platform 100, and the platform 100 ) Is not only a structure for simple regasification or a structure for storing LNG but also a structure capable of functioning as a breakwater which can additionally perform a function of a berthing facility for mooring of a ship To be provided.

That is, the selective type legged platform system according to the second embodiment of the present invention has a merit that it does not need a separate breakwater because it is a structure that also functions as a breakwater function.

On one side of the platform 100, a machinery space 170 is provided.

Next, the selective floating structure 200 is provided for fixing and moving the platform 100.

The selective floating structure 200 allows the platform 100 to float on the sea while floating on the sea when the platform 100 is moved, while the selective floating structure 200 allows the floating platform 200 to float on the sea floor The platform 100 is fixed to the leg structure 300 in a submerged state so that the platform 100 can be held fixed in waves or wind.

The selective floating structure 200 includes a main buoyancy tank 210, a pump chamber 220, and a guide duct 230.

The main buoyancy tank 210 is provided on the bottom surface of the platform 100 and is provided as a weight for charging the ballast water at the same time as the platform 100. When the platform 100 is moved, And is provided as a buoyant body.

7, the main buoyancy tank 210 is divided into an upper buoyancy tank 211 and a lower buoyancy tank 212, and the upper buoyancy tank 210 and the lower buoyancy tank 212 are divided into an upper buoyancy tank 211 and a lower buoyancy tank 212, And a column 213 which is not subjected to buoyancy is further provided between the lower buoyancy tank 211 and the lower buoyancy tank 212.

The structure of the main buoyancy tank 210 may be such that the column 213 is horizontally cut off and removed when a specific matter such as the depth of the installation area of the selected type legged platform equipment changes, And adding a new column between them to control the elevation of the selective type legged platform facility. At this time, the upper buoyancy tank 211 drains the ballast water stored therein during the height adjustment of the selective part type legged platform equipment to make the platform 100 floated, thereby cutting the column 213 and moving the new column And the process of welding after the addition is performed safely and smoothly.

Of course, the height adjustment of the selectable type legged platform equipment may be performed by adjusting the height of each leg 320 of the leg structure 300, which will be described later. In this case, the upper buoyancy tank 211 and the lower buoyancy tank (212) drains the ballast water stored therein and then proceeds to raise and lower the ballast water.

The upper surface of the upper buoyancy tank 211 is formed to be positioned higher than the water level during the high tide. The upper surface of the lower buoyancy tank 212 is positioned higher than the water level during the low tide, And the column 213 is formed with a plurality of through holes 214 for eliminating the wave resistance.

That is, the height of the upper surface of the main buoyancy tank 210 is set to be higher than the water level during the low water level and the high water level to prevent the platform 100 from being floated by buoyancy, (Not shown) through the formation of the waveguide 214 so that the overall selectors type legged platform facility can reduce the force provided from the waves.

Meanwhile, the main buoyancy tank 210 is not limited to the structure of the above-described embodiment. That is, as shown in FIG. 8, it may be formed as a single body instead of being divided vertically.

The pump chamber 220 is a structure in which the interior of the main buoyancy tank 210 is filled with ballast water or provided with a pump 221 driven for drainage.

The pump chamber 220 is positioned on one side of the platform 100 and the upper surface of the pump chamber 220 is positioned higher than the wave height of the corresponding region. And a hatch 222 for entering an operator into the pump chamber 220 is provided on the upper surface so that the operator can smoothly enter the pump chamber 220 if necessary.

9, in the second embodiment of the present invention, the guide duct 230 is connected to the main buoyancy pump 230, The upper side buoyancy tank 211 constituting the tank 210 and the center side of the lower buoyancy tank 212 are formed as an example.

That is, the pumping force of the pump 221 is transmitted through the guide duct 230 to fill the respective buoyancy tanks 211 and 212 with ballast water or to forcefully discharge the ballast water stored in the respective buoyancy tanks 211 and 212 It is.

Next, the leg structure 300 is configured to be placed on the seabed surface while forming the bottom side portion of the selector type legged platform equipment.

At this time, the rock layer 400 is installed on the sea floor, and the leg structure 300 is installed on the rock layer 400, so that the selective portion type legged platform equipment can be installed while maintaining the flatness.

This leg structure 300 comprises an auxiliary buoyancy tank 310 and a plurality of legs 320.

Here, the auxiliary buoyancy tank 310 is positioned below the platform 100, and the ballast water is stored so as to assist floating of the platform 100 while being laid on the bottom surface of the platform 100, or the ballast water is emptied, .

At this time, the auxiliary buoyancy tank 310 may be composed of a single tank. However, if the ballasting water is charged, the drainage time is taken into account, or the flooding is considered, the auxiliary buoyancy tank 310 may be divided into a plurality .

The plurality of legs 320 are fixed to the upper surface of the auxiliary buoyancy tank 310 and are placed on the selective floating structure 200.

In addition, a plurality of through holes 321 are formed in each of the legs 320 to eliminate the wave resistance, and a mounting guide 322 protrudes outward from an upper end surface of each leg 320.

The mounting guide 322 is a guide for guiding the seating of the selective floating structure 200. The mounting guide 322 is inclined gradually inward toward the outer surface of the leg 320 toward the bottom.

Although not shown, each of the legs 320 may have a length-adjustable structure.

For example, a plurality of legs 320 may be connected to each other depending on the depth of the water, or each leg 320 may be formed in a telescopic structure to provide a structure capable of extending or reducing the length thereof .

Hereinafter, the drying process of the selector type legged platform equipment according to the second embodiment of the present invention will be described in more detail with reference to the flowchart of FIG. 10 attached hereto.

First, the area to be dried is flattened by forming a rock layer 400 by placing a rock on the bottom surface of the place where the selective part type legged platform facility is to be dried (S100).

At this time, the rock is concrete, but the present invention is not limited thereto.

Next, the leg structure 300 is seated on the upper surface of the flattened portion (S200).

At this time, the leg structure 300 drains the ballast water in the auxiliary buoyancy tank 310, moves the auxiliary buoyancy tank 310 in a floating state on the water surface, and then, when arriving at the area where the rock is laid, The ballast water is gradually charged into the buoyancy tank 310 while sinking to the seabed so that the leg structure 300 is accurately seated on the bottom surface on which the rock is placed.

Particularly, the height of the leg 320 and the auxiliary buoyancy tank 310 constituting the leg structure 300 is determined by taking into consideration the highest tide, the lowest tide and the maximum wave of the corresponding dry area .

When the installation of the leg structure 300 is completed, the selective floating structure 200 on which the platform 100 is placed is prepared (S300).

In addition, the main buoyancy tank 210 is emptied and floated in the sea (S400) by discharging the ballast water in the main buoyancy tank 210 constituting the selective floating structure 200, (S500). At this time, the movement of the selective floating structure 200 on which the platform 100 is mounted uses a ship.

When the selective floating structure 200 on which the platform 100 is placed reaches the designated position (the position where the leg structure is installed), the selective floating structure 200 is submerged on the seabed so as to be laid on the leg structure 300 do.

That is, the ballast water is progressively filled in the main buoyancy tank 210 (S600) so that the main buoyancy tank 210 forms a weight with buoyancy removed, whereby the selective floating structure 200 sinks to the seabed And is placed on the standing leg structure 300.

Eventually, the drying of the optional part type legged platform facility is completed through sequential execution of the above-described process.

That is, the selector unit type legged platform equipment according to the second embodiment of the present invention is placed on the sea floor so that it can be kept stationary without being shaken or swollen in waves and winds.

In the meantime, according to the second embodiment of the present invention, the leg-type platform equipment includes a main buoyancy tank 210 and an auxiliary buoyancy tank 310 filled with ballast water and submerged in water, And the regeneration operation or the power generation operation is performed and operated.

If the movement of the selective type legged platform equipment is required during the operation as described above, the main buoyancy tank 210 constituting the selective floating structure 200 is driven by driving the pump 221 provided in the pump chamber 220, And the leg structure 300. The floating platform 100 is moved to the set point by the boat after floating the platform 100 on the sea, Subsequently, at the time of arrival at the set point, the main float tank 210 constituting the selected floating structure 200 and the auxiliary float tank 310 constituting the leg structure 300 are filled with ballast water to cool down the selected floating structure 200 .

On the other hand, the selectable type legged platform equipment of the present invention is not limited to the structure of the second embodiment described above.

That is, the columns 213 constituting the main buoyancy tank 210 and the legs 320 constituting the leg structure 300 are constituted by a plurality of vertically arranged frames having a straight structure as shown in FIG. 11, It is possible to minimize the influence of the waves without forming the holes 214 and 321.

12, when the column 213 and the leg 320 are formed only in a straight structure, the strength of each of the columns 213 and the legs 320 may be reduced. The auxiliary frames 215 and 323 having an inclined structure may be additionally provided between the upper and lower frames 320 and 320 so as to reinforce the strength.

As described above, according to the second embodiment of the present invention, the selective floating structure and the leg structure are fixed to the undersurface while being locked to the sea floor under normal operation, The structural stability can be ensured without being influenced by waves or winds, and the regeneration operation or the power generation operation of the platform 100 can be performed stably.

Particularly, according to the second embodiment of the present invention, when the weight of the entire platform equipment is taken into consideration, it is practically performed as a breakwater installed adjacent to the shore, .

In addition, since the selector unit type legged platform equipment according to the second embodiment of the present invention can be used as a mooring facility itself, a separate mooring facility is unnecessary, and it is possible to reduce the weight of the floating structure compared to the existing floating structure, It is easy to access from the land, and it is easy to support electricity / fresh water / steam from the land. In addition, the function of the berthing facility for mooring the ship is additionally performed through the addition of the fender 160 .

In addition, since the selective-type legged platform equipment according to the second embodiment of the present invention is configured to float and move to the sea by de-ballasting if necessary, It is possible to move and install it, and there is an advantage that it can be moved from one place to another after use.

In addition, since the structure change such as the height adjustment of each leg 320 or the height adjustment of the column is simple and simple when the water depth is different, the economic effect can be expected to be improved.

5. Concrete Structure
20 (20a, 20b, 20c). Ballast Water Tank 21. Ballast Pump
50, 100. Platform 30, 110. LNG tank
120. Regenerator 130. Side buoyancy tank
140. Trim Tank 60, 150. Void space
160. Fender 170. Machine room
200. Optional floating structure 210. Main buoyancy tank
211. Upper buoyancy tank 212. Lower buoyancy tank
213. Column 214. Through hole
215. Auxiliary frame 220. Pump room
221. Pump 222. Hatch
Guide duct 300. Leg structure
310. Auxiliary buoyancy tank 10,320. Leg
321. Through hole 322. Mounting guide
323. Auxiliary frame 400. Rock layer

Claims (24)

A platform for storing or regenerating cargo at sea or performing power generation work;
A concrete structure installed on the sea floor facing the platform; And
And a leg connected at one end to the lower portion of the platform and connected at the other end to an upper portion of the concrete structure. The method according to claim 1,
And an LNG tank is provided below the platform. 3. The method of claim 2,
And a void space of a predetermined height is provided between the platform and the LNG tank. The method according to claim 1,
And a buoyancy tank provided in the form of wrapping the lower and peripheries of the LNG tank and storing the ballast water. 5. The method of claim 4,
And a ballast pump for supplying ballast water to the buoyancy tank,
The ballast pump includes:
Wherein the LNG tank is disposed on both sides of the LNG tank. The method according to claim 1,
Wherein the legs are of a length adjustable structure. The method according to claim 1,
A plurality of legs are provided,
Wherein the plurality of legs are connected at the same height to a depth of water between the bottom of the platform and the top of the concrete structure. A platform for storing or regenerating cargo at sea or performing power generation work;
A selective floating structure provided on the platform, floating on the sea when the platform is moved, and sinking on the seabed at the same time as the platform;
And a leg structure positioned at a lower portion of the platform and seated on a bottom of the platform. 9. The method of claim 8,
The platform
An LNG tank in which LNG is stored,
And a regenerating unit provided at an upper portion of the LNG tank and regenerating the LNG in the LNG tank. 9. The method of claim 8,
The selective floating structure
A main buoyancy tank in which the ballast water is charged and supplied as a weight while the ballast water is discharged and discharged to the buoyant body when the platform is moved,
A pump chamber located at one side of the platform and equipped with a pump driven to charge or drain ballast water in the main buoyancy tank;
And a guide duct guiding the filling of the ballast water or the drainage flow. 11. The method of claim 10,
The main buoyancy tank of the selective floating structure is divided into an upper buoyancy tank and a lower buoyancy tank,
And a column is further provided between the upper buoyancy tank and the lower buoyancy tank. 12. The method of claim 11,
Wherein the column has a plurality of through holes for eliminating wave resistance. 11. The method of claim 10,
Wherein the upper surface of the main buoyancy tank of the selective floating structure is formed to be positioned higher than the water level during low tide and high tide. 11. The method of claim 10,
The upper surface of the pump chamber is positioned higher than the wave height of the area,
And a hatch for entering an operator into the pump chamber is installed on the upper surface of the pump chamber. 9. The method of claim 8,
And a side buoyancy tank and a trim tank are further provided around the platform. 9. The method of claim 8,
The leg structure
An auxiliary buoyancy tank in which the ballast water is stored so as to assist floating of the platform while being laid on the seabed surface or the ballast water is emptied and provided to the buoyant space,
And a plurality of legs fixed on the upper surface of the auxiliary buoyant tank and on which the selective floating structure is mounted. 17. The method of claim 16,
And a plurality of through holes are formed in each of the legs to eliminate a wave resistance. 17. The method of claim 16,
And a mounting guide for guiding the seating of the selective floating structure is further provided on an upper outer surface of each of the legs. The method according to claim 8 or claim 16,
And a rock layer is laid on the sea floor, and the leg structure is installed on the rock layer. The method according to claim 1,
And a fender for mooring the vessel is further provided on a sea side outer wall surface of the platform. 8. A drying method for a selector-type legged platform installation according to any one of claims 1 to 7,
(a) fabricating the legs connecting the lower portion of the platform and the upper portion of the concrete structure to a depth of water;
(b) connecting one end of the leg to a lower portion of the platform; And
(c) connecting the other end of the leg to the top of the concrete structure. 20. A drying method of a selective-type legged platform installation according to any one of claims 8 to 20,
Placing a rock on the sea floor to planarize;
Placing a leg structure on an upper surface of the planarized portion;
Discharging the ballast water in the main buoyant tank constituting the selective floating structure with the platform placed on the selective floating structure, floating the float water in the sea, and moving the floating structure to the place where the leg structure is located;
And a step of filling the selected floating structure with the ballast water in the main buoyancy tank constituting the selective floating structure so that the selected floating structure is placed on the leg structure while sinking to the sea floor. Way. 8. A method of operating a selector-type legged platform arrangement as claimed in any one of claims 1 to 7,
Type legs that stably operate the platform secured to the seabed surface by the leg and concrete structures while floating the platform by releasing one or both ends of the legs when movement of the platform is required, How to operate de-platform equipment. 20. A method of operating a selector type legged platform arrangement as claimed in any one of claims 8 to 20,
The main buoyancy tank and the auxiliary buoyancy tank are filled with ballast water and are submerged in water to be fixed in the area,
When the platform is requested to move
Discharging the ballast water in the auxiliary buoyant tank constituting the main buoyant tank and the leg structure constituting the selected floating structure by driving the pump to suspend the platform at sea;
Traversing the floating platform on the sea and moving it to a set point;
And a step of calibrating a platform by filling ballast water in an auxiliary buoyancy tank constituting a main buoyancy tank and a leg structure constituting a selective floating structure upon arrival at a set point. .

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