SG172573A1 - Catamaran type lng floater - Google Patents

Catamaran type lng floater Download PDF

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Publication number
SG172573A1
SG172573A1 SG2010093748A SG2010093748A SG172573A1 SG 172573 A1 SG172573 A1 SG 172573A1 SG 2010093748 A SG2010093748 A SG 2010093748A SG 2010093748 A SG2010093748 A SG 2010093748A SG 172573 A1 SG172573 A1 SG 172573A1
Authority
SG
Singapore
Prior art keywords
lng
float
hull
ship
ballast
Prior art date
Application number
SG2010093748A
Inventor
Jae Ik Lee
Jae Ouk Sun
Young Dal Choi
Ho Kyeong Kim
Original Assignee
Stx Offshore & Shipbuilding Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stx Offshore & Shipbuilding Co filed Critical Stx Offshore & Shipbuilding Co
Publication of SG172573A1 publication Critical patent/SG172573A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00Interior subdivision of hulls
    • B63B11/02Arrangement of bulkheads, e.g. defining cargo spaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/01Improving mechanical properties or manufacturing
    • F17C2260/016Preventing slosh
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0105Ships

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Disclosed therein is a including: an LPG ship's hull (10) having a first ballast tank (11) for storing ballast water; a float (20) spaced apart from the LNG ship's hull (10) at a predetermined interval and floating on the surface of the sea, which is laterally adjacent to the LNG ship's hull (10), the float (20) having a second ballast tank (21) for storing ballast water; and a liquefaction unit (30) having an end portion connected to the LNG ship's hull (10) and the other end portion connected to the float (20) so as to be supported by the LNG ship's hull (10) and the float (20). Because the catamaran type LNG floater includes the LNG ship's hull, the float arranged laterally adjacent to the LNG ship's hull and the float in such a way as t be supported by the LNG ship's hull and the float, and the water level controlling means for controlling the water level of the float, the liquefaction unit can be stably supported while keeping the balance by the water level controlling means, whereby it can enhance stability of the LNG floater and allow an easy and rapid installation of the liquefaction unit without renovation of the existing LNG ship.

Description

Catamaran type LNG floater
BACKGROUND OF THE INVENTION
Field of the Invention {O11 The present invention relates To a catamaran Type LNG floater, and more particularly, to a catamaran types LNG floater, which includes an LNG ship's hull, a {loat arranged laterally adjacent to the LNG ships hull, a ligusfaction unit connected conte the LNG ship's hull and the float in such a way as te be supported by the LNG ship's hull and the fica, and water leysi controlling means for coentrelling the water level of the float so that the liguefaction unit can be stably supported while keeping the balance by the water level controlling means, thereby enhancing stability of the LNG floater and allowing an easy and rapid installation of the liguefaction unit without renovation of the existing LNG ship.
Background Art [G21 In general, an LNG floater {ING floating storage and production facility) is a marine facility sguipped with a unit to produce LNG (Liguefied Natural Gas) or natural gas on a bargse- type float.
[03] Sua an LNG floater has different configurations of gper units or components according be types of cargos tanks for storing LNG. For instance, in case of a cargo tank of a MUS: type, 1t is recognized that the MOSS-type cargo tank is safe because it does not cause sloshing of LNG. However, ths LNG floater having the MOBS-type carge tank has a problem in that iu regulres an excessive area because thers are spatial constraints in manufacturing an FPO {(Ficating Production, Storage and
Gfflcading) unit for producing LNG or renovating the exdsting LNG ship inte an LNG FESC ship.
[04] Moreover, in cage of a cargo tank of a membranes type, because the membrane-type gargo tank causes sdeshing, there are many limitatiens on that the membrane-typs cargo tank ils used as a gargoe tank for khe LNG fiocater. Furthermore, in order te use the wmenbrapne-type earge tank in the LNG floater, strength of insulation parts must be largely increased, and in case where the
LNG ship is renovated 1nto an LNG FPSQ ship, materials of a part af the cargo tank must be aubstiiuted with a reinforced insulation material.
[05] Additionally, in case of an SPB {Self Supporting
Prismatic Type-R) cargo tank, because it 1s ewpegted that it does not gauss sloshing, the SPB cargo tank has been used as a cazngo tank fer the LNG floater, put 1t is more expensive in manufacturing costs than the membrane-itype cargo tank.
[08] In the meantime, in case wheres the existing ING ship is renovated into an LNG floater gr a new LNG floater is built,
G
Lhers are many problems acconding toe the types of the cargo tank as follows.
F071 First, in case of the nembrane-iype carge tank, it must have a bulkhead at the center thereof due toe sloshing and use a special insulation box with lngreased insulstion strength.
Morsover, 1n case where the existing LNG ship is renovated inte an LNG flocater, the renovation must be made not using an LNE ship but using an LNG RV because the insulation pox mounted inside the cargo tank must be replaced with a new one with a reinforced instiatien. In this instance, because the LNG RY iz divided into two and a liguefastieon unit is instailed between the two LNG BVs, the insulation box of the cargo tank may be damagad while cutting the LNG RY into two and welding the divided LNG RVs te be doinad with each other, and hence, 1t ig necessary bo rework the cargo
Tank. fog] Furthermore, in case of the MOSS-type cargo tank, without regard to renovation or new building of the LNG fleoater, it doses not have an enough space for Liguefaction unit and is too small toe install a heat exchanger and a column because the heat axchanger and the golumn are too high.
[09] Now, the LNG market reguires ING floaters, each of which 1s eoguipped with a mwmediun-sized liguefaction unit to develop small and medium-sized gas reserves.
10] Therefore, thers are attempts Lo renovate LNG ship, which are not in service, in the market because new-bullding of
LNG floaters comes sxpensive.
SMMRY OF THE INVENTION
[113 Aeoordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it ds an object of the pregent invention to provide a catamaran Type LNG flester, which includes an LNG ship's hull, a float arvanged laterally adjiagent to the LNG ship's hull, =a
Tiguefaction unit connected onto the LNG ship's hull and the float in such a way as to be zuppoerited py the LNG ships hull and the flezt, and water isvel eontrolling means for controiling the water level «f the float =o that the liguefaction unit can be stably supported while keeping the balanee by the water level controlling means, thereby enhancing stability of the LNG fisater and allowing an easy and rapid installation of fhe liguefaction unit without renovation of the existing LNG ship.
[12] To accomplish the above object, acoording te the present lmventicon, there ig provided a catamaran tyes LNG fhoater including: an LNG ship's hull having a first baliast tank for gtoring ballast water; a float spaced apart from ithe LNG ghip’s hull at a predetermined interval and fleating on the surface of the sea, which is laterally adjacent te the ING ships hull, the finoat having a second ballast tank for storing ballast water: and a liguefacticn unit having an end portion connected to the LNG ships hull and the other end perticn connected to the float so ag to be supported by the LNG ship's hull and the float.
[133 Moreover, the first ballast tank of the ING shig’s null and the second ballast tank of the flcat communicate with cach other via a communigation pipe te thereby share the ballast water with =ach othern.
[141 Forthermers, the catamaran type LNG fleater further includes water level centreiling means for controlling a water level of the ballast water centainsd in the second ballast tank of the float.
{15} Additionally the water level controlling means includes: an airy compressor fer sugplyving eonpressed air into the float and forcedly introdusding the ballast water eontained inte the second ballast tank of the float into the first kallast tank of the LNG ships hull: a feed pipe having an end portion connected with the air compressor and the other 2nd gortion communicating with a portion ¢f an upper end part of the float to thereby supply the compressed air of the alr compressor into thea float; and a discharge pipe arranged adjacent to the feed pips for discharging the inside air of the fisat to the cutside.
[18] In addition, the faed pipe comprises a feed control valve for controlling a feed amount of the compressed air supplied from the alr compressor.
[17] Moreover, the discharge pipe compris=s a discharge control walve for controlling a discharge amount of the compressed alr of the float discharged te the outside. [183 As described above, the catamaran Lypse LNG floater acgeording to the present invention includes the LNG ship's hull, the fleat avrvanged laterally adiacent te the LNG ship's hull, the
Liguefaction unit cennected onto the INS ships hull and the float 1n such a wav as to ha supported by the LNG ship's hull and the float, and the water level controlling means for controliing the water level of the flipat so that the ligueifsgilon unit can be stably supported while keeping the balance hy the water level controliing means, thereby enhancing stability of the LNG fleater and allowing an easy and rapid installation of the ligusfaction unit without renovation of the existing LNG ship.
BRIEF DESCRIPTION OF THE DRAWINGS
[18] The above and other objects, features and advantages 3f the present invention will ke apparent from the following detalled descripticn of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which:
§241 FTG, 1 ds a schematic diagram of a gatamaran type LNG floater according to a preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
F211 Reference will ke now made in detadl te the preferred embodiment of the present invention with reference to the attached drawings.
[22] Az shown In FIG. 1, a catamaran bLype LNG floater according to a preferred embodiment of the present invention includes: an LNG shipfe hell 10 having a first ballast tank 11 for storing ballast water: a fleat 20 gpaced apart from the LNG ship’s hull 10 at a predetermined interval and floating on the surface of the sea, which is laterally adiscent to the LNG ship's hull 1¢, the fipat 20 having a sscond bkallsst tank 21 for storing ballast water: and 2 liguefaction unit 20 having an end portion connscted fe the LNG ship's hull 10 and the other end portion connected to the float 20 zo as to be supported byw the LNG zhipn’s hull 18 and the float 20.
[23] The first ballast tank 11 of the LNG ship's hull 10 and the second ballast tank 21 of the fipat Z0 communicats with each other via a communication pipe 48 to thereby shares the ballast water with sach other. i”
£24] Moreover, the LNG fleater according te the present invention further includes water level controlling means for controlling a water level of the ballast water contained In the second ballast tank 21 of the float Z0.
F258] Here, the water level controlling means includes: an air compressor 50 for supplying compressed alr inte the flcat 20 and forcedly introducing the ballast water contained into the second ballast tank 21 of the float 28 into the first ballast tank 11 of the LNG ship's hull 10; a feed pipe 20 having an end portion connected with the alr compressor 50 and the other end portion communicating with a portion of an upper and part of the fleat 20 to thereby =zupply the compressed alr of the alr compressor 50 1lato the float 20: and a discharge pipe 70 arranged adjacent to the feed pige 60 for discharging the inaide air of the figat 20 to the nutside.
[261] Additicnalily, the fezed pipe 60 includes a feed control valve ©1 far controlling a feed amount of the compressed alr supplied from the air compressor 50, and the discharge pipe 70 includes a discharge control valve 71 for controlling a discharge amount of the compressed alr of the ifiocat 20 discharged te the outside. [277 Here, it is preferabls that the air compressor 50 ean control the water Level of the ballast water contained in the float 20 by repeatedly increasing and decreasing pressure ef alr using a pumping system, which is used in the conventional LNG ships hull 10.
[28] Furthaemmere, when The water level is centrolled, it Is preferable that the alr compressor 50 is used in link with an inelination monitoring system (not shown) s¢ as to contrel the water level dn consideration of an inelination of the LNG ship's hull 149. {28} In the catamaran type LNG floater according to the praesent invention, the fleat 20 floats on the suriace of the aaa, which is laterally adjacent to the ING ship's hall 10, and then, the first ballast tank 11 of the LNG ships hull 10 and the second ballast tank 21 of the float 20 are communicated with each other via the communication plps 40, so that the ballast tanks il and Z1 can share their ballast water with each other, [3013 After that, the liguefacgtion unit 38 1s installed on upper portions of the LNG ship's hull 10 and the float 20 in such a way that they are connected with each other and supported by the liguefactlon unit 36. [313 In addition, the feed pigs &0 and the discharge pipe
TO, which are the means for controlling the water level of the ballast water, are connented to thse fleat 28, and then, the air compressor 50 is mounted on the fased pipe 60, whereby the catamaran type LNG fliocater according to the present lmvention is completely manufactured,
[32] The completsd LNG floater can produce LNG or natural gas through the liguefaction unit 30 in a state whers the LNG floater flicats on the sea. [337 Moreover, if a bad inclination of the liguefaction unit 30 causes an unstable condition during the production of LNG or natural gas, the water level of the ballast water contained in the float 20 is controlled so as fo make the liguefaction unit 30 in a2 stable condition.
F343 That 13, dn ease where the float 20 is located higher than the LNG ship's hull 10 and the liquefaction unit 30 is inclined toward the LNG ship's hull 10, the float 20 is in =a floating state because atmospheric pressure inside the second ballast tank 21 of the flcat 20 is high and the kalliast water is amall in guantity, and hence, the atmospheric pressure is discharged to the outside by the discharge control valve 71 of the discharge pipe 70, so that the float Z0 and the LNG ship's hull 10 can be in the right balance, 35] In this instance, the fead control walve $1 of the feed pipe 60 must be in a closad condition. 383 Orn the eontrary, in case whare the float 20 is located lower than the LNG ship's hull 10 and the liquefaction unit 30 is inclined towand the flgat 20, the float 20 8 in a =zunken state beacause atmospheric pressure inside the second ballagt tank 21 of the float 20 is low and the ballast water ig large in quantity.
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Lhe LNG SHIRT mad LU En Be An LIE DUET SEORTEIE: 3 “Fg Fok 8 ge eg emg ye ae Feo avs SFA ov By a i a se RE pe ME a (37) In this dogtauge, the dischargs control salve 71 of 2. x " x, - Jz - ay 3 . 1, > ~ x 3 bed
AT PE Te a TR TYE SEL ev aviv os Sry Po] NNT Eee ENN NEY the of TACO REpE SU DIST BE In Slagga gong LENE.
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Eo a ee a Pe A ee eats J. Ey eR ees TREY SN TR ay Sia Go mn gd 18 opsrated dn real time ao that the LEG flesler can cagyy out
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TER PrOTEsh non. Wal bow 1a kas LRA Ee JUS Il & gunadiiion ot the
Td everen Fay ey ion un 3 E. 3 4!
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38 While hs orossant dreant ion hay Bean desoribed idl : WHR OY IA Brassard vay nom TRE Hal Q8Sriiasy wean nen Ee an vy See 6% i 3 mera sw SF Hy ge Set sme Ars, eri eet ere Ed Ee ede de
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Claims (5)

What is claimed is:
1. & catamaran type LNG floater comprising: an LNG ship's hull {10} having a first ballast tank (11) for 3 storing ballast water; az flcat {EC} spaced apart from the LNG ships hull 10} at a predetermined interval and floating on the surface of the sea, which is laterally addacent to the ING ship's hull (10), the flean (20) having a second ballast tank (21) for storing ballast 0 water; and a liguefaction unit (30) having an end pertlon connected to the ING ship's hull (10) and the other end portion connected to the float {(Z0} =z0 as to bs supported by the LNG ship's hull {10} and the float (20). i5
2. The catamaran types LNG fleater acoording to claim 4, wherein the first ballast tank {11} of ths LNG ship's hull (10% and the sesoond ballast tank (21) of thse float (20) communicate with each other via a communication pips 40) to thereby share the ballast water with each ather.
3. The catamaran type LNG floater according toe claim 2, further comprising water level controlling means for controlling a water level of the ballast water contained in the second pallast tank {21} of the flcat (20).
4. The catamaran types LNG flcater according te claim 3, whersin the waber level controlling means comprises: an air compressor (50) for supplying compressed aly dnbe the float (20) and forvecedly introducing the ballast water contained into the second kallast tank (24) of the fleat (28) into the first ballast tank {11} of the LNG ships hull (10): 1g a feed pips (60) having an end portion connegted with the air compressor (50) and the other end portion communicating with a poertlien of an upper end part of the float (20) to thereby supply the compressed air of the alr compressor {80} into the float (20); and a discharge gipe (70) arranged adiacent to the feed pipe {60 for discharging the inside air of the flecat (20) to the outside.
5. The catamaran type LNG fleater according to claim 4, wherein the feed pipe (80) comprises a feed control valve (61) for controlling a feed amount of the compressed air supplied from the alr compressor (50).
&. The catamaran type LNG fisater according to claim 4, wherein the discharge pipe {70} comprises a discharge control valve (71) for controlling a discharge amcunt of the compressed air of the float (20) discharged tc the outside. By wid.
SG2010093748A 2009-12-18 2010-12-17 Catamaran type lng floater SG172573A1 (en)

Applications Claiming Priority (1)

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KR1020090126843A KR101122350B1 (en) 2009-12-18 2009-12-18 Catamaran type LNG floater

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SG172573A1 true SG172573A1 (en) 2011-07-28

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KR (1) KR101122350B1 (en)
CN (1) CN102101520B (en)
BR (1) BRPI1011115A2 (en)
MY (1) MY160175A (en)
RU (1) RU2497711C1 (en)
SG (1) SG172573A1 (en)
WO (1) WO2011074926A2 (en)

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BR112014026125B1 (en) * 2012-04-20 2021-08-10 Single Buoy Moorings Inc FLOATING LNG PLANT COMPRISING A FIRST AND A SECOND CONVERTED LNG CARRIER AND METHOD FOR CONVERTING A FIRST AND SECOND LNG CARRIER IN THE LNG PLANT
RU2619670C1 (en) * 2015-12-09 2017-05-17 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Донской Государственный Аграрный Университет" (Фгбоу Во Дгау) Gas-waterjet drive of wave power plant
KR101840649B1 (en) * 2017-11-20 2018-03-21 알렌 주식회사 A buoyant system of floating electricity generation platform

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KR20110070133A (en) 2011-06-24
RU2497711C1 (en) 2013-11-10
BRPI1011115A2 (en) 2013-12-24
MY160175A (en) 2017-02-28
WO2011074926A3 (en) 2011-10-27
CN102101520A (en) 2011-06-22
KR101122350B1 (en) 2012-03-23
WO2011074926A2 (en) 2011-06-23
WO2011074926A4 (en) 2012-01-26
CN102101520B (en) 2013-11-13

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