KR20110131557A - Lng cargo pumping system in 2-row type lng cargo containment system - Google Patents
Lng cargo pumping system in 2-row type lng cargo containment system Download PDFInfo
- Publication number
- KR20110131557A KR20110131557A KR1020100051049A KR20100051049A KR20110131557A KR 20110131557 A KR20110131557 A KR 20110131557A KR 1020100051049 A KR1020100051049 A KR 1020100051049A KR 20100051049 A KR20100051049 A KR 20100051049A KR 20110131557 A KR20110131557 A KR 20110131557A
- Authority
- KR
- South Korea
- Prior art keywords
- space
- lng
- cargo hold
- loading
- unloading device
- Prior art date
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Classifications
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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
- B63B11/00—Interior subdivision of hulls
- B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
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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
- B63B11/00—Interior subdivision of hulls
- B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
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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
- 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
- B63B27/30—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- 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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
Description
The present invention relates to a cargo loading and unloading device of a liquefied natural gas cargo hold, and a liquefied natural gas carrier and a floating offshore structure including the same, and more particularly, each of the divided cargo hold in the cargo hold is divided in the inner space by the cofferdam The present invention relates to a cargo loading and unloading device of a liquefied natural gas cargo hold, and to a liquefied natural gas carrier and a floating offshore structure including the same.
In general, liquefied natural gas (LNG) refers to a colorless transparent cryogenic liquid whose natural gas containing methane as its main component is cooled to about minus 163 ° C. and its volume reduced to one hundredth.
As such liquefied natural gas is used as an energy resource, an efficient transportation method that can transport a large amount from a production base to a demand or a receiving site has been considered to use this gas as energy. Liquefied natural gas carriers or floating offshore structures have emerged to transport or process gas offshore.
LNG carriers are equipped with LNG cargo hold for the storage and transportation of liquefied natural gas that has been liquefied at ultra low temperature.The cargo hold must not only have leakage of liquefied natural gas, but also must be completely insulated from the outside. A high level of skill is required in ship technology. In addition to this, the cargo of the ultra-low temperature state is stored therein, and shrinkage and / or expansion occur due to the change of temperature, and thus stability or safety should be considered.
For this reason, all containment systems for LNG carriers must be formed of materials that can withstand extremely low temperatures and be built to accommodate a wide range of temperature variations from ambient conditions to field conditions. To this end, liquefied natural gas hold is designed with an effective temperature insulator that prevents heat ingress but also prevents cooling of the ship's basic hull structure.
Furthermore, in LNG carriers applied to LNG storage vessels, there is a sloshing phenomenon in which the liquid substance contained in the cargo hold, ie LNG, flows and hits the cargo hold wall when the vessel moves in the marine state. There is a problem that occurs.
In addition, the demand for floating offshore structures, such as LNG Floating, Production, Storage and Offloading (FPFP) or LNG Floating Storage and Regasification Units (FSRUs), is increasing. Also, the solution of this sloshing phenomenon is required. However, such floating offshore structures cannot avoid the partial loading state in which the load due to the sloshing is most inevitable, and thus the sloshing problem is becoming more issue.
In order to reduce the load by sloshing to some extent, a bulkhead-type cofferdam is installed in the cargo hold. Due to the installation of the cofferdam, the cargo hold can be divided into two rows or more.
However, although the load due to sloshing could be distributed to some extent by the installation of the cofferdam, a pump and pipe for discharging LNG loaded in the cargo hold to the outside and a pump for maintaining and reinforcing the installation state of the pump and pipe There was a problem that facilities such as towers should be installed in each partition space.
Conventional technology to solve this problem, as shown in Figure 1, to install the
However, according to the related art, a part of the lower part of the
Therefore, the present invention was invented to solve the above problems, the object of which is to install the main pipe in the cofferdam which is installed so that the internal space of the cargo compartment is divided, the first, branched from the main pipe to each internal space, Cargoes in LNG tankers, which provide loading and unloading means in each of the 2 pipes and the 1st and 2nd pipes, to allow the cargo to be unloaded and to move LNG between the compartments. It is to provide a loading and unloading device, a liquefied natural gas carrier and a floating offshore structure including the same.
In order to achieve the above object, according to an embodiment of the present invention, the main pipe is installed in the cofferdam which is installed to divide the cargo hold into the first space and the second space, branched from the main pipe and the first space and the second pipe The first and second sub-pipes extending to the space, and the amount of each of the first and second sub-pipes to be installed and unloading means for unloading management of the internal cargo of the first space and the second space separately.
In addition, the first sub pipe and the second sub pipe may be in communication with each other.
In addition, a direction control valve may be installed at a branch point from the main pipe to the first and second sub pipes.
In addition, the cofferdam branched from the main pipe toward the first and second spaces may be sealed by welding to ensure airtightness.
In addition, the first and second main pipes may be provided with a heat insulating material for blocking the cold heat as the outer periphery.
And, the loading and unloading means may include a pump, and a lower support portion on which the pump is seated and a heat insulating material is installed to block cold heat.
In addition, two or more lower supports may be provided, and the suction port of the pump may protrude between the lower supports.
In addition, the liquefied natural gas carrier according to the present invention includes the cargo loading and unloading device, the floating offshore structure according to the present invention includes the cargo loading and unloading device.
According to the cargo loading and unloading device of the liquefied natural gas cargo hold according to the present invention, the liquefied natural gas carrier and the floating offshore structure comprising the same, the main pipe is installed in the cofferdam which is installed so that the internal space of the cargo hold is divided, respectively from the main pipe Volume and unloading means may be provided in each of the first and second sub-pipes and the first and second sub-pipes branching into the internal spaces of the cargo compartment, so that the divided internal spaces of the cargo hold may be individually managed.
In addition, the cargo can move between the inner space of the cargo hold divided into the cofferdam through the first and second sub-pipes, there is an effect capable of stable and efficient operation and management of the cargo hold.
1 is a cross-sectional view showing a conventional cargo hold,
2 is a cross-sectional view of a liquefied natural gas cargo hold according to an embodiment of the present invention.
DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention, which is only an example, and the present invention is limited thereto. It is not.
2 is a cross-sectional view of the LNG cargo hold is installed cargo loading and unloading device according to an embodiment of the present invention.
As shown in Figure 2, in the present embodiment, the cargo loading and unloading device of the liquefied natural gas cargo hold, the
Here, the cargo loading and unloading device of the LNG cargo hold may be applied to a floating offshore structure, such as a LNG carrier and LNG FPSO or LNG FSRU.
In the liquefied natural gas carriers or floating offshore structures, a plurality of cargo holds 100 may be installed to accommodate cargoes such as LNG, and a
By the
In addition, the
In addition, at the lower end side of the
Here, the
In addition, the
Further, the first and
The
In addition, each of the first and
The amount and unloading means may include a
Here, two or more
In addition, by providing a groove in the bottom surface of the
Of course, although not shown in the drawings, for the LNG pumping without a residual amount, it may be provided with a separate branch pipe (not shown) branched from the
LNG cargo cargo loading and unloading device including such a structure is used or operated as follows.
Referring to FIG. 2 again, when unloading cargo, such as LNG, filled in the
That is, when the
Accordingly, the cargoes of the
Furthermore, according to the control of the
Here, the first and
As described above, the
As described above as a specific embodiment of the liquefied natural gas cargo hold cargo loading and unloading device according to an embodiment of the present invention, this is only an example, the present invention is not limited to this, the broadest range according to the basic idea disclosed herein Should be interpreted as having Those skilled in the art can easily change the material, size, etc. of each component according to the application field, and can be combined / substituted the disclosed embodiments to implement a pattern of a timeless shape, but this also does not depart from the scope of the present invention will be. 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:
110: copper dam 120: main pipe
130:
160: pump 170: lower support
180, 190: insulation
Claims (11)
First and second sub-pipes branched from the main pipe and extending to the first space and the second space,
It is provided in each of the first and second sub-pipes and includes a quantity, unloading means for unloading management of the internal cargo of the first space and the second space
Loading and unloading device of LNG cargo hold.
The first and second sub-pipes are in communication with each other
Loading and unloading device of LNG cargo hold.
Directional control valve is installed at the point branched from the main pipe to the first and second sub pipes.
Loading and unloading device of LNG cargo hold.
The first and second sub-pipes branched from the main pipes and directed toward the first and second spaces are sealed to the cofferdam for airtightness.
Loading and unloading device of LNG cargo hold.
The sealing is by welding
Loading and unloading device of LNG cargo hold.
The first and second sub-pipes are installed with a heat insulating material for blocking the cold heat by the outer periphery
Loading and unloading device of LNG cargo hold.
The amount, unloading means,
With pump,
The pump is seated and includes a lower support for installing a heat insulating material for blocking the cold heat
Loading and unloading device of LNG cargo hold.
At least two lower supports are provided, and the suction port of the pump protrudes between the at least two lower supports.
Loading and unloading device of LNG cargo hold.
Grooves are provided at the bottom of the cargo hold between the lower supports.
Loading and unloading device of LNG cargo hold.
LNG carriers.
Floating offshore structures.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100051049A KR101177819B1 (en) | 2010-05-31 | 2010-05-31 | Lng cargo pumping system in 2-row type lng cargo containment system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100051049A KR101177819B1 (en) | 2010-05-31 | 2010-05-31 | Lng cargo pumping system in 2-row type lng cargo containment system |
Publications (2)
Publication Number | Publication Date |
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KR20110131557A true KR20110131557A (en) | 2011-12-07 |
KR101177819B1 KR101177819B1 (en) | 2012-08-28 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR20100051049A KR101177819B1 (en) | 2010-05-31 | 2010-05-31 | Lng cargo pumping system in 2-row type lng cargo containment system |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101755551B1 (en) * | 2016-09-07 | 2017-07-07 | 이윤우 | Subside Type Container For Storing Liquefied Gas |
KR101707179B1 (en) * | 2016-09-07 | 2017-02-27 | 이강민 | Multi-Layer Container For Storing Liquefied Gas |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146290U (en) * | 1983-03-23 | 1984-09-29 | 日本鋼管株式会社 | Liquid pumping equipment for ships that carry both bulk and liquid cargo |
JP3592683B2 (en) * | 2002-04-30 | 2004-11-24 | 株式会社川崎造船 | Piping device in tank where sloshing occurs |
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2010
- 2010-05-31 KR KR20100051049A patent/KR101177819B1/en active IP Right Grant
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Publication number | Publication date |
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KR101177819B1 (en) | 2012-08-28 |
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