KR20120066193A - Floating structure - Google Patents

Floating structure Download PDF

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Publication number
KR20120066193A
KR20120066193A KR1020100127415A KR20100127415A KR20120066193A KR 20120066193 A KR20120066193 A KR 20120066193A KR 1020100127415 A KR1020100127415 A KR 1020100127415A KR 20100127415 A KR20100127415 A KR 20100127415A KR 20120066193 A KR20120066193 A KR 20120066193A
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KR
South Korea
Prior art keywords
pipe
liquefied natural
gas
natural gas
storage tank
Prior art date
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KR1020100127415A
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Korean (ko)
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KR101224929B1 (en
Inventor
서가희
Original Assignee
삼성중공업 주식회사
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Priority to KR1020100127415A priority Critical patent/KR101224929B1/en
Publication of KR20120066193A publication Critical patent/KR20120066193A/en
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Publication of KR101224929B1 publication Critical patent/KR101224929B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps

Abstract

PURPOSE: A floating structure is provided to reduce generation rate of evaporative gas by heat-exchanging LNG(Liquefied Natural Gas) and the evaporative gas in the upper and lower parts of a storage tank. CONSTITUTION: A floating structure(100) comprises a main body(110), first coffer dams(131), a second coffer dam(132), storage tanks(120), an LNG pipe, and an evaporative gas pipe. The first copper dams divide the main body along a lateral direction of the main body. The second coffer dam divides the main body in a longitudinal direction of the main body. The storage tanks are installed in spaces divided by the first and second coffer dams and store the LNG. The LNG pipe is installed in the second coffer dam. The LNG pipe delivers the LNG in the lower part of storage tank to an evaporative gas section in the upper part and connects the multiple storage tanks. The evaporative gas pipe installed in the second coffer dam delivers the evaporative gas in the upper part of the storage tanks to a LNG section in the lower part and connects the multiple storage tanks.

Description

Floating structure

The present invention relates to a floating structure.

Liquefied Natural Gas (LNG) is obtained by liquefying natural gas (methane) based on methane (hereinafter referred to as "NG") by cooling it to about -162 ℃. Colorless, transparent liquid with a volume of about 1/600 compared to NG. Therefore, when liquefied and transported to LNG during NG transfer, it can be transported very efficiently. For example, an LNG carrier that can transport (transport) LNG to sea is used.

LNG carriers are provided with an LNG storage tank for storing LNG, and recently, a technique has also been proposed in which storage tanks are arranged in two rows in the longitudinal direction of the hull.

However, in this case, since a pump tower must be installed for each row of tanks during loading and unloading of LNG, there is a problem in that a large cost is consumed.

In order to solve this problem, a technique of installing a pump tower in only one of the two rows of tanks by drilling a cofferdam between two rows of tanks has been proposed, but problems such as poor insulation performance of the cofferdam and difficulty in membrane work There is.

Embodiments of the present invention are to provide a floating structure that can be loaded and unloaded liquefied natural gas efficiently.

In addition, to provide a floating structure that can reduce the amount of evaporated gas generated.

According to an aspect of the invention, the main body; A first cofferdam that divides the main body along a width direction of the main body; A second cofferdam that divides the main body along a longitudinal direction of the main body; A plurality of storage tanks installed in a space partitioned by the first and second cofferdams and storing liquefied natural gas; A liquefied natural gas pipe installed at the second cofferdam and transferring the liquefied natural gas at the bottom of the storage tank to an upper boil-off gas region and connecting a plurality of the storage tanks; And an evaporation gas pipe installed at the second cofferdam and transferring the boil-off gas of the upper portion of the storage tank to a lower portion of the liquefied natural gas and connecting the plurality of storage tanks. have.

The liquefied natural gas pipe may include: a main pipe installed inside the second cofferdam and extending along the longitudinal direction of the main body; A suction pipe for sucking liquefied natural gas from the liquefied natural gas region; A discharge pipe for injecting liquefied natural gas into the boil-off gas region; And a conveying pipe connecting the discharge pipe and the suction pipe.

In addition, the suction pipe and the discharge pipe is at least one connected to each of the storage tank, at least one of the suction pipe and the discharge pipe connected to one of the storage tank is connected to the main pipe A structure can be provided.

In addition, the main pipe may be disposed above the second cofferdam, the discharge pipe may provide a floating structure, characterized in that extending from the main pipe.

In addition, the liquefied natural gas pipe can provide a floating structure, characterized in that a pump for moving the liquefied natural gas is provided.

In addition, the discharge pipe may be provided with a floating structure, characterized in that a nozzle for injecting liquefied natural gas is provided.

In addition, the transport pipe may provide a floating structure, characterized in that extending from the intersection of the main pipe and the discharge pipe.

In addition, the boil-off gas pipe, the main pipe is installed in the second cofferdam extending along the longitudinal direction of the main body; A suction pipe for sucking the boil-off gas from the boil-off gas region; A discharge pipe for injecting boil-off gas into the liquefied natural gas region; And a conveying pipe connecting the discharge pipe and the suction pipe.

In addition, the suction pipe and the discharge pipe is at least one connected to each of the storage tank, at least one of the suction pipe and the discharge pipe connected to one of the storage tank is connected to the main pipe A structure can be provided.

The main pipe may be disposed above the second cofferdam, and the suction pipe may extend from the main pipe.

In addition, the second cofferdam inside the liquefied natural gas transfer pipe for transferring the liquefied natural gas upward; And an evaporated gas conveying pipe for transferring the evaporated gas downward, and the liquefied natural gas conveying pipe and the evaporated gas conveying pipe may be arranged to be in surface contact with each other.

In addition, the liquefied natural gas sucked through the suction pipe from any one of the storage tank may provide a floating structure characterized in that the transfer to the other of the storage tank through the main pipe.

In addition, the evaporated gas sucked through the suction pipe from any one of the storage tank may provide a floating structure characterized in that the transfer to the other of the storage tank through the main pipe.

The liquefied natural gas pipe may include: a liquefied natural gas main pipe installed inside the second cofferdam and extending along a longitudinal direction of the main body; A liquefied natural gas suction pipe for sucking liquefied natural gas from the liquefied natural gas region; Liquefied natural gas discharge pipe for injecting liquefied natural gas into the boil-off gas region; And a liquefied natural gas transfer pipe connecting the discharge pipe and the suction pipe, wherein the boil-off gas pipe is installed inside the second cofferdam and extends along a longitudinal direction of the main body. ; An evaporating gas suction pipe for sucking the evaporating gas from the evaporating gas region; An evaporating gas discharge pipe for injecting evaporating gas into the liquefied natural gas region; And an evaporative gas transfer pipe connecting the discharge pipe and the suction pipe.

Embodiments of the present invention can efficiently load and unload the liquefied natural gas by installing a pipe that can transfer the liquefied natural gas to the cofferdam.

In addition, the amount of generated boil-off gas can be reduced by exchanging liquefied natural gas and boil-off gas at the top and bottom of the storage tank.

1 is a plan view of a floating structure according to an embodiment of the present invention.
2 is a longitudinal sectional view of a floating structure according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line II ′ of FIG. 2.

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

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a plan view of a floating structure according to an embodiment of the present invention, Figure 2 is a longitudinal cross-sectional view of the floating structure according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line II 'of FIG. .

1 to 3, the floating structure 100 according to an embodiment of the present invention is mounted on the main body 110, the main body 110 that can be suspended in water (Liquefied Natural Gas, Hereinafter, a plurality of storage tanks 120, which are referred to as "LNG", cofferdams 131 and 132 partitioning the installation space of the storage tanks 120, and installed in the cofferdams 131 and 132. The LNG pipe 140 may include an LNG pipe 140 through which LNG is transferred, and a BOG pipe 150 through which boiled-off gas (BOB) is transferred.

The floating structure 100 may include a liquefied natural gas carrier (LNGC), a liquefied natural gas regasification vessel (LNG RV), a liquefied natural gas floating storage and regasification unit (LFSF), and a liquefied natural gas floating LNG (FPSO) production and storage. and off-loading), and may be any structure in which the storage tank 120 may be installed while floating in water.

The storage tank 120 may be provided in plurality in the longitudinal direction or the width direction of the main body 110, in this embodiment provided in four rows along the longitudinal direction (left and right direction in Figure 1) of the main body 110. In addition, it will be described by way of example provided in two rows along the width direction (up and down direction in Figure 1) of the main body 110. That is, a total of eight storage tanks 120 may be provided, and may be arranged in a four-row, two-column structure based on the length direction of the main body 110.

LNG is stored in the storage tank 120, and the upper region is filled with boiled-off gas (hereinafter referred to as "BOG") evaporated by heat transferred from the outside of the LNG. That is, the storage tank 120 may be divided into a lower LNG region and an upper BOG region.

The cofferdams 131 and 132 divide a mounting space of the main body 110 so that the storage tank 120 may be installed, and the first cofferdam 131 extending in the width direction of the main body 110. And a second cofferdam 132 extending in the longitudinal direction.

The number of the first cofferdam 131 and the second cofferdam 132 may be adjusted according to the number of arrangement of the storage tank 120, in this embodiment the first cofferdam 131 is 3 And one second cofferdam 132 is provided.

In this case, the second cofferdam 132 may be formed such that the interior thereof is in a vacuum state in order to minimize heat loss in the LNG pipe 140 and the BOG pipe 150.

The LNG pipe 140 and the BOG pipe 150 may be installed inside the second cofferdam 132.

The LNG pipe 140 may transfer the LNG of the lower portion of the storage tank 120 to the upper boil-off gas region and connect a plurality of the storage tanks 120.

In detail, the LNG pipe 140 extends in the longitudinal direction of the main body 110 and is stored in the LNG main pipe 141 and the LNG main pipe 141 installed inside the second cofferdam 132. LNG discharge pipe 142 extending into the tank 120, one side is connected to the LNG main pipe 141, the LNG transfer pipe 143 extending in the vertical direction of the storage tank 120, the LNG transfer It may include an LNG suction pipe 144 connected to the other side of the pipe 143 and extends inwardly of the storage tank 120.

The LNG main pipe 141 may be disposed above the second cofferdam 132, and the LNG discharge pipe 142 extends to the BOG region of the upper portion of the storage tank 120 and sucks the LNG. Pipe 144 may extend to the LNG region of the lower portion of the storage tank 120.

In addition, one side of the LNG transfer pipe 143 may be connected to an intersection point of the LNG main pipe 141 and the LNG discharge pipe 142. In addition, the LNG main pipe 141 and the LNG transfer pipe 143 may be connected to be perpendicular to each other, the LNG discharge pipe 142 and the LNG suction pipe 144 may be formed in parallel to each other.

In this case, a valve (not shown) for controlling the flow direction of the fluid may be provided at the intersections of the pipes 141, 142, 143, and 144. The valve may be controlled by a controller (not shown) of the floating structure 100 to selectively shield the respective pipes 141, 142, 143, and 144.

Meanwhile, the LNG pipe 140 may be formed such that both the LNG discharge pipe 142 and the LNG suction pipe 144 extend in one storage tank 120. As a result, LNG below the storage tank 120 may be injected upward.

In detail, the LNG suction pipe 144 or the LNG transfer pipe 143 or the intersection of the LNG suction pipe 144 and the LNG transfer pipe 143 by pumping the LNG of the lower side of the storage tank 120 A pump 145 may be provided to supply the LNG discharge pipe 142 through the LNG transfer pipe 143. One pump 145 may be installed for each of the pair of storage tanks 120 adjacent to each other separated by the second cofferdam 132.

In addition, the LNG discharge pipe 142 has a nozzle 142a pumped by the pump 145 to inject the LNG delivered through the LNG transfer pipe 143 to the upper portion of the storage tank 120. At least one may be provided.

For example, each zone of the storage tank 120 is provided with a temperature sensor (not shown) or a pressure sensor (not shown), the control unit is the detection result of the temperature sensor or pressure sensor is out of a predetermined range The pump 145 may be driven to suck LNG from the lower portion of the storage tank 120 to inject the upper portion.

As such, the LNG of the lower portion of the storage tank 120 having a relatively lower temperature is injected into the upper portion of the storage tank 120 having a relatively higher temperature, thereby lowering the upper temperature of the storage tank 120. This can reduce the amount of BOG generated.

In this case, the LNG pumped from the lower portion of one storage tank may be injected into the upper portion of the storage tank, may be moved along the LNG main pipe 141 may be injected into the upper portion of the other storage tank.

In addition, the LNG discharge pipe 142 and the nozzle 142a may be disposed in the upper region of the storage tank 120 is filled with BOG without contacting the LNG.

In addition, the LNG discharge pipe 142 and the LNG suction pipe 144 may be installed to be connected to at least one for each of the storage tank 120 partitioned by the cofferdam (131, 132). The LNG discharge pipe 142 extends from the LNG main pipe 141, and each of the storage tanks 120 partitioned by the cofferdams 131 and 132 is connected to the LNG main pipe 141. Can be connected.

That is, the LNG transfer between each of the storage tanks 120 is possible through the LNG main pipe 141. In addition, even if only one pump for loading or unloading LNG is installed in the LNG main pipe 141, the LNG of all zones may be loaded or unloaded.

On the other hand, the BOG pipe 150 may transfer the BOG of the upper portion of the storage tank 120 to the lower LNG region, it may be connected to a plurality of the storage tank (120).

In detail, the BOG pipe 150 extends in the longitudinal direction of the main body 110 and is stored in the BOG main pipe 151 and the BOG main pipe 151 installed in the second cofferdam 132. BOG suction pipe 152 extending inwardly of the tank 120, one side is connected to the BOG main pipe 151, BOG transfer pipe 153 extending in the vertical direction of the storage tank 120, the BOG transfer It may include a BOG discharge pipe 154 connected to the other side of the pipe 153 and extends inwardly of the storage tank 120.

The BOG main pipe 151 may be disposed above the second cofferdam 132, and the BOG suction pipe 152 extends to the BOG area above the storage tank 120 and discharges the BOG. Pipe 154 may extend to the LNG region of the lower portion of the storage tank 120.

In addition, one side of the BOG transfer pipe 153 may be connected to the intersection of the BOG main pipe 151 and the BOG suction pipe 152. In addition, the BOG main pipe 151 and the BOG transfer pipe 153 may be connected to be perpendicular to each other, the BOG suction pipe 152 and the BOG discharge pipe 154 may be formed in parallel to each other.

In this case, a valve (not shown) for controlling the flow direction of the fluid may be provided at the intersections of the pipes 151, 152, 153, and 154. The valve may be controlled by a controller (not shown) of the floating structure 100 to selectively shield the respective pipes 151, 152, 153, and 154.

The BOG pipe 150 may be formed such that both the BOG suction pipe 152 and the BOG discharge pipe 154 extend in one storage tank 120. As a result, the BOG of the upper portion of the storage tank 120 may be moved to the lower portion of the storage tank 120.

In detail, when LNG is injected into the upper portion of the storage tank 120 by the LNG pipe 140, the BOG in the upper portion of the storage tank 120 flows into the BOG suction pipe 152 in response to the LNG injected. In addition, the BOG may be introduced into the BOG discharge pipe 154 through the BOG transfer pipe 153 and discharged to the lower portion of the storage tank 120. Since the lower portion of the storage tank 120 is filled with LNG, the BOG may be instantaneously cooled to be LNG or melted in LNG when discharged from the BOG discharge pipe 154. As a result, the amount of BOG on the upper portion of the storage tank 120 can be reduced.

In this case, the BOG suction pipe 152 is disposed so as to be located in the upper region of the storage tank 120 in which the BOG is filled without contacting the LNG, the BOG discharge pipe 154 is the storage tank 120 filled with LNG It is arranged to be located in the lower region of the).

In addition, the BOG pipe 150 may be further provided with a pump for forcibly transporting the BOG.

In addition, the BOG suction pipe 152 and the BOG discharge pipe 154 may be installed to be connected to at least one per one storage tank 120. The BOG suction pipe 152 extends from the BOG main pipe 151, and each of the storage tanks 120 may be connected by the BOG main pipe 151. That is, the BOG transfer between the storage tanks 120 through the BOG main pipe 151 is possible.

Meanwhile, the LNG transfer pipe 143 of the LNG pipe 140 and the BOG transfer pipe 153 of the BOG pipe 150 may be in contact with each other in the second cofferdam 132 so that heat transfer may occur. Can be arranged.

In detail, the LNG pumped from the lower portion of the storage tank 120 and moved upwards and the BOG moving from the upper portion of the storage tank 120 to the lower portion conduct heat to each other during the movement in the second cofferdam 132. The LNG transfer pipe 143 of the LNG pipe 140 and the BOG transfer pipe 153 of the BOG pipe 150 may be in contact with each other so as to exchange heat by the heat exchanger. At this time, the LNG transfer pipe 143 of the LNG pipe 140 and the BOG transfer pipe 153 of the BOG pipe 150 is in surface contact with each other, as shown in Figure 3 to increase the heat transfer amount by heat conduction. It can be formed to.

In the present embodiment, the LNG main pipe 141 of the LNG pipe 140 and the BOG main pipe 151 of the BOG pipe 150 are disposed above the second cofferdam 132 as an example. However, this is only an example, and the spirit of the present invention is not limited thereto. For example, the LNG main pipe 141 may be disposed below the second cofferdam 132 and connected to the LNG suction pipe 144, and the BOG main pipe 151 may also be connected to the second cofferdam. It may be disposed below the 132 and connected to the BOG discharge pipe 154.

That is, at least one of the LNG discharge pipe 142 and the LNG suction pipe 144 extending into one of the storage tank 120 is connected to the LNG main pipe 141, and the one storage tank ( At least one of the BOG discharge pipe 154 and the BOG suction pipe 152 extending therein is connected to the BOG main pipe 151.

Hereinafter will be described the operation and effect of the floating structure 100 according to an embodiment of the present invention having the configuration as described above.

Each of the storage tanks 120 divided by the cofferdams 131 and 132 is connected to each other by the LNG pipe 140. Therefore, without having to install equipment for loading / unloading LNG, such as a pump tower, for each of the storage tanks 120, if only one equipment is connected to the LNG pipe 140 to the entire storage tank 120 Loading / unloading of LNG can be performed.

In addition, by installing the above-described valve in the pipes (141, 142, 143, 144) of the LNG piping 140 to selectively control the opening and closing of the pipe, LNG loading / unloading only in a specific storage tank 120 It is also possible to carry out, it is also possible to transfer the LNG from one storage tank 120 to another storage tank 120.

In addition, the upper and lower portions of the storage tank 120, pipes 142, 143 and 144 of the LNG pipe 140 to which the LNG is transported, and pipes 152, 153 of the BOG pipe 150 to which the BOG is transported. 154), the lower LNG is injected into the upper BOG area in the storage tank 120, and accordingly, the amount of generation of the BOG can be reduced.

In this case, since the LNG transfer pipe 143 of the LNG pipe 140 and the BOG transfer pipe 153 of the BOG pipe 150 are disposed in surface contact with each other in the second cofferdam 132, the LNG and the BOG are disposed. Heat exchange between takes place. As a result, BOG may be supplied to the lower portion of the storage tank 120 at a lower temperature, and LNG may have a higher temperature but lower temperature than the BOG at the upper portion of the storage tank 120. The amount of BOG can be reduced.

In addition, each of the storage tank 120 is connected by the BOG pipe 150 as well as the LNG pipe 140, the generation amount of BOG in a specific storage tank 120 increases the pressure inside the The BOG may be transferred to another storage tank 120 having a relatively low pressure to maintain a constant pressure of the storage tank 120 as a whole.

As described above as a specific embodiment of the floating structure according to the embodiment of the present invention, but this is only an example, the present invention is not limited to this, should be construed as having the broadest range in accordance with the basic idea disclosed herein. do. Skilled artisans may implement a pattern of features that are not described in a combinatorial and / or permutational manner with the disclosed embodiments, but this is not to depart from the scope of the present invention. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

100: floating structure 110: main body
120: storage tank 131: first cofferdam
132: second copper dam 140: LNG piping
150: BOG piping

Claims (14)

main body;
A first cofferdam that divides the main body along a width direction of the main body;
A second cofferdam that divides the main body along a longitudinal direction of the main body;
A plurality of storage tanks installed in a space partitioned by the first and second cofferdams and storing liquefied natural gas;
A liquefied natural gas pipe installed at the second cofferdam and transferring the liquefied natural gas at the bottom of the storage tank to an upper boil-off gas region and connecting a plurality of the storage tanks; And
Floating structure is installed in the second cofferdam, the evaporation gas to the upper portion of the storage tank to the liquefied natural gas area of the lower, comprising a boil-off gas pipe connecting a plurality of the storage tank. The method of claim 1,
The liquefied natural gas pipe,
A main pipe installed inside the second cofferdam and extending along the longitudinal direction of the main body;
A suction pipe for sucking liquefied natural gas from the liquefied natural gas region;
A discharge pipe for injecting liquefied natural gas into the boil-off gas region; And
And a transfer pipe connecting the discharge pipe and the suction pipe. The method of claim 2,
At least one suction pipe and the discharge pipe is connected to each storage tank,
At least one of the suction pipe and the discharge pipe connected to one of the storage tank is connected to the main pipe. The method according to claim 2 or 3,
The main pipe is disposed above the second cofferdam,
And the discharge pipe extends from the main pipe. The method according to claim 1 or 2,
Floating structure, characterized in that the liquefied natural gas pipe is provided with a pump for moving the liquefied natural gas. The method of claim 2,
Floating structure, characterized in that the discharge pipe is provided with a nozzle for injecting liquefied natural gas. The method of claim 4, wherein
The conveying pipe extends from an intersection of the main pipe and the discharge pipe. The method of claim 1,
The boil-off gas pipe,
A main pipe installed inside the second cofferdam and extending along the longitudinal direction of the main body;
A suction pipe for sucking the boil-off gas from the boil-off gas region;
A discharge pipe for injecting boil-off gas into the liquefied natural gas region; And
And a transfer pipe connecting the discharge pipe and the suction pipe. The method of claim 8,
At least one suction pipe and the discharge pipe is connected to each storage tank,
At least one of the suction pipe and the discharge pipe connected to one of the storage tank is connected to the main pipe. The method according to claim 8 or 9,
The main pipe is disposed above the second cofferdam,
The suction pipe extends from the main pipe. The method of claim 1,
Inside the second cofferdam
Liquefied natural gas transfer pipe for transferring liquefied natural gas upwards; And
Provided is an evaporative gas conveying pipe for transporting the evaporated gas downwards,
Floating structure, characterized in that the liquefied natural gas transfer pipe and the boil-off gas transfer pipe is arranged in surface contact with each other. The method of claim 2,
Liquefied natural gas sucked through the suction pipe from any one of the storage tank can be transferred to the other of the storage tank through the main pipe. The method of claim 8,
Floating structure, characterized in that the evaporated gas sucked through the suction pipe from any one of the storage tank can be transferred to the other of the storage tank through the main pipe. The method of claim 1,
The liquefied natural gas pipe,
A liquefied natural gas main pipe installed inside the second cofferdam and extending along the longitudinal direction of the main body;
A liquefied natural gas suction pipe for sucking liquefied natural gas from the liquefied natural gas region;
Liquefied natural gas discharge pipe for injecting liquefied natural gas into the boil-off gas region; And
It includes a liquefied natural gas transfer pipe connecting the discharge pipe and the suction pipe,
The boil-off gas pipe,
An evaporating gas main pipe installed in the second cofferdam and extending along the longitudinal direction of the main body;
An evaporating gas suction pipe for sucking the evaporating gas from the evaporating gas region;
An evaporating gas discharge pipe for injecting evaporating gas into the liquefied natural gas region; And
Floating structure characterized in that it comprises a boil-off gas transfer pipe connecting the discharge pipe and the suction pipe.
KR1020100127415A 2010-12-14 2010-12-14 Floating structure KR101224929B1 (en)

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Application Number Priority Date Filing Date Title
KR1020100127415A KR101224929B1 (en) 2010-12-14 2010-12-14 Floating structure

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Application Number Priority Date Filing Date Title
KR1020100127415A KR101224929B1 (en) 2010-12-14 2010-12-14 Floating structure

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KR20120066193A true KR20120066193A (en) 2012-06-22
KR101224929B1 KR101224929B1 (en) 2013-01-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015012577A1 (en) * 2013-07-22 2015-01-29 대우조선해양 주식회사 Floating marine structure and method for controlling temperature thereof
KR20150083665A (en) * 2014-01-10 2015-07-20 대우조선해양 주식회사 Vent master unit and lng carrier having the same

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KR20100117771A (en) * 2009-04-27 2010-11-04 대우조선해양 주식회사 Apparatus for heating cofferdam and floating marine structure having the apparatus
KR101125103B1 (en) * 2009-03-10 2012-03-21 대우조선해양 주식회사 Apparatus for connecting liquefied gas storage tanks and floating marine structure having the apparatus
KR101125106B1 (en) * 2009-03-10 2012-03-21 대우조선해양 주식회사 Apparatus for connecting liquefied gas storage tanks and floating marine structure having the apparatus

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WO2015012577A1 (en) * 2013-07-22 2015-01-29 대우조선해양 주식회사 Floating marine structure and method for controlling temperature thereof
CN105555658A (en) * 2013-07-22 2016-05-04 大宇造船海洋株式会社 Floating marine structure and method for controlling temperature thereof
KR20150083665A (en) * 2014-01-10 2015-07-20 대우조선해양 주식회사 Vent master unit and lng carrier having the same

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