CN107228275A - It is a kind of can flexible combination and unattended floating LNG stocking systems - Google Patents

It is a kind of can flexible combination and unattended floating LNG stocking systems Download PDF

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Publication number
CN107228275A
CN107228275A CN201710383916.3A CN201710383916A CN107228275A CN 107228275 A CN107228275 A CN 107228275A CN 201710383916 A CN201710383916 A CN 201710383916A CN 107228275 A CN107228275 A CN 107228275A
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CN
China
Prior art keywords
lng
floating
unattended
hulls
hull
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Pending
Application number
CN201710383916.3A
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Chinese (zh)
Inventor
曹民
曹一民
马丁
王彤
金梦菊
任杰
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Wison Nantong Heavy Industry Co Ltd
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Wison Nantong Heavy Industry Co Ltd
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Priority to CN201710383916.3A priority Critical patent/CN107228275A/en
Priority to PCT/CN2017/090750 priority patent/WO2018214232A1/en
Publication of CN107228275A publication Critical patent/CN107228275A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention belongs to LNG storages and application field, it is specifically related to a kind of can flexible combination and unattended floating LNG stocking systems, including harbour, harbour is provided with first and second pipeline group and leader cable, the marine of quayside stores hull provided with electricity generation module, gasification module and LNG, one end of first pipeline group is used for the LNG outlets for connecting LNG cargo ships, the other end of first pipeline group is used to be communicated to land user, second pipe component is flow in electricity generation module, gasification module and each LNG storage hulls, and electricity generation module passes through cable connection to land user；It is equipped with electricity generation module and gasification module in central station of floating dock, leader cable and is provided with master control line, each central station of floating dock is connected on each LNG storage hulls.The beneficial effects of the invention are as follows：The present invention can be by realizing LNG storage, so that continuous generating or supply natural gas incessantly is carried out using the LNG of storage, to adapt to the demand of user in real time.

Description

It is a kind of can flexible combination and unattended floating LNG stocking systems
Technical field
The invention belongs to offshore LNG storages and application field, and in particular to it is a kind of can flexible combination and unattended floating Formula LNG stocking systems.
Background technology
Natural gas is as a kind of important clean energy resource, and its high heating value and environment friendly and pollution-free advantage are increasingly by user Favor.With advances in technology, the cost such as its exploitation, transport, storage constantly declines, therefore its application is constantly expanding Exhibition.Current natural gas marine transportation mainly carries out long-distance transportation in liquid form, and the storing mode generally used has land LNG Storage tank is stored and floating LNG storage devices.Be typically due to natural gas the place of production and user's relative distance farther out, the natural gas in the place of production By LNG transport Ship Transportations to user terminal after liquefaction, then LNG is discharged into terminal by the loading/unloading platform on cargo ship and stored up In cryopreservation device.The floating LNG storage devices applied in the market are substantially transports ship's alternation by LNG, these repackings Floating LNG storage devices are all ship form designs, and are for good and all anchored in one place.The primary function of floating LNG storage devices It is storage LNG, current some floating LNG storage devices, which are also increased, such as to gasify, generates electricity and the function such as fresh water processed.These dresses Put and all manufactured or reequiped according to a certain specific needs, its storage volume or function are also fixed, when extraneous demand When situation changes, such as developing rapidly due to city size is increased sharply with gas power consumption, or due to economic depression Plant-scale underproduction limited production that the requirement of gas or environment is caused, with reduction of gas power consumption etc., just occurs former LNG storage Wretched insufficiency or excessive redundancy are produced with application.
The content of the invention
The purpose of the present invention be the defect that overcomes prior art to exist there is provided it is a kind of can by realizing LNG storage, from And using the LNG of storage carry out it is continuous incessantly generate electricity or supply natural gas, with adapt in real time user demand can be flexible Combination and unattended floating LNG stocking systems.
The technical solution adopted for the present invention to solve the technical problems is：It is a kind of can flexible combination and unattended floating LNG stocking systems, it includes harbour, and harbour is provided with the first pipeline group, second pipe group and leader cable, and the marine of quayside sets There are LNG electricity generation modules, LNG gasification module and several LNG storage hulls, one end of the first pipeline group is used to connect LNG transports The LNG outlets of ship, the other end of the first pipeline group is used to be communicated to land user, and the first pipeline group and second pipe group pass through pipe Converge and connect across, second pipe group branches to LNG electricity generation modules, LNG gasification module and each LNG by several flexible pipes Store in hull, LNG electricity generation modules are connected to land user by a point cable connection leader cable, leader cable by output cable； It is equipped with LNG electricity generation modules and LNG gasification module in central station of floating dock, leader cable and is provided with master control line, each central station of floating dock passes through envelope The first sub-control line in point cable is connected on master control line, and master control line is connected to each LNG by the second sub-control line parallel and stored up Deposit on hull.
First, after LNG cargo ships are rested against on harbour, the LNG outlets of LNG cargo ships and one end of the first pipeline group connect Logical, the LNG of LNG cargo ships is entered to during each LNG stores hull from the first pipeline group, second pipe group and flexible pipe successively to be stored up Deposit, the LNG of each LNG storage hulls can enter LNG electricity generation modules and LNG gasification module by flexible pipe and second pipe group, Natural gas after electric power and LNG gasification the module gasification that LNG electricity generation modules are produced passes sequentially through flexible pipe, second pipe group and first Pipeline group is input to land user and used, while the central station of floating dock on LNG electricity generation modules and LNG gasification module will bear whole system Control and monitoring function.In brief, second pipe group and the first pipeline group can be regarded as LNG/ natural gases pipeline combination, Single LNG pipelines or single natural gas line.The present invention can be by realizing LNG storage, so as to utilize the LNG of storage Continuous generating or supply natural gas incessantly is carried out, to adapt to the demand of user in real time.
Structure of the present invention and device are simple, can be designed to a series of LNG storage hulls of different reserves, and different storages The LNG storages hull of amount or identical reserves can flexible combination into the storage device of various reserves, and flexible tune can be changed on demand With quantity to meet demand of the user to LNG, and can neatly with floating LNG electricity generation modules and LNG gasification block combiner Into complete supply or electric power system.
The present invention can on harbour with other floating installations (the LNG gasification module of floating or the LNG generating moulds of floating Block) and fixing device (LNG receiving terminals, power plant, gasification station, liquefaction station) is used cooperatively on the bank, to customize and realize difference Function.
The present invention can greatly shorten construction period and can quickly meet different actual demands with modular approach, plus It is upper unattended, greatly reduce investment and the operation cost of described device.
The service life of the present invention did not lay up up to 30 years, and reduced maintenance cost and the stopping production caused by maintenance for 20 years Influence, can be widely applied to floating storage, outer defeated, transhipment, gasification, the generating of rivers or coastal natural gas.
Specifically, the hull bottom of LNG storages hull is spliced by multiple ballast tanks set gradually along captain direction, Two sides of a ship of LNG storage hulls are spliced by multiple along the first empty cabin that captain direction is set gradually, and LNG stores the ship of hull Bow and ship stern are equipped with the empty cabin of L-shaped second, and the top of LNG storage hulls is provided with the 3rd empty cabin, the one of two second empty cabins Two ends of the individual right angle end respectively with the 3rd empty cabin are fixed, and another right angle end in two second empty cabins stores hull with LNG respectively Hull bottom two ends fix, each ballast tank, each first empty cabin and the 3rd empty cabin constitute the LNG holding bays of rectangular cavity.
In said structure, LNG storage hulls use full duplex shell structure, and shipboard is divided into a left side by longitudinal bulkhead and transverse bulkhead The empty cabin of starboard symmetrical first, hull bottom is set to ballast tank, to ensure that the present invention meets stability requirement and the environmental condition of specification Under job safety；Using duplex shell structure as the empty cabin of isolation, LNG holding bays use film-type liquid goods maintenance system, can be true LNG is protected to store in atmospheric low-temperature state.
Further, LNG stores total volume of compartment that hull is in cuboid or square, the 3rd empty cabin and all second empty cabin 8000m3；The volume of compartment 60000m of LNG holding bays3；The sum of ballast tank is three, total volume of compartment 12700m of all ballast tank3； First empty cabin is distributed with three in LNG two sides of a ship for storing hull, total volume of compartment 11500m in all the first empty cabin3.LNG is stored Volume of compartment amount is big, and electric power and monitoring system are provided by outside, and structure and device are simple, can be designed to a series of different reserves The storage device, and different reserves or identical reserves LNG holding bays can flexible combination into various reserves storage device.
Further, LNG stores the pipeline being fixed with above in the middle part of the stem of hull for arranging release natural gas Pressure vent valve mast, improves security.
Further, LNG stores the ship midship starboard of hull and is provided with LNG loading/unloading platforms, electrical equipment distribution box and up and down Fore-and-aft gangway, LNG loading/unloading platforms pass through a point cable connection leader cable by soft pipe connection second pipe group, electrical equipment distribution box；If Fore-and-aft gangway supplies to pass through when needing personnel to go on board and operating above and below putting, it is possible to achieve unmanned on duty, can quickly meet different reality Demand.
Further, LNG is stored in the middle part of the ship stern of hull provided with service platform and for centralized arrangement pipeline, pump sump, survey Deep device, pressure tester, temperature measuring equipment, the air chamber of manhole and/or safety valve, the middle part of service platform are provided with breach, and air chamber is set It is simple in construction in breach, it is convenient that each device is installed on service platform.
Further, LNG storages hull is fixed on harbour or bank by mooring gear.LNG storage vessels body Mooring Arrangements Using topside berthing mode, the topside of hull two sets two mooring positioning devices respectively, it would however also be possible to employ the mooring of close form Positioner is substituted, it is preferred to use positioning is fixed in the structure of guide pile, and guide pile is squeezed into below mud line, mooring fixed effect It is good.Its function is hull being fixed on quayside or bank, and allow hull underloading and it is fully loaded between due to the change of drinking water Moved up and down along mooring gear.
Further, output cable side is connected with for carrying out centralized Control and prison to whole floating LNG stocking systems The central control room of keyholed back plate reason.When being not provided with LNG electricity generation modules and LNG gasification module in whole application system, land 140 set The central control room put is used to store each LNG hull and the safe operation of whole system carries out centralized Control/monitoring pipe Reason.
It is preferred that, the hull of LNG storage hulls of the invention is always about 71m, molded breadth about 48m, moldeed depth about 24.2m, maximum Absorb water about 14m, about 48000 tons of displacement；LNG operations lean on defeated speed outside charge and discharge rubber lined hose mode, LNG to be to the maximum using other 3600m3/h。
Further, LNG holding bays are A types liquid tank, Type B liquid tank and c-type liquid tank, or film-type liquid goods safeguards system System, has a wide range of application.Certainly, single shell structure form can be used using hull of the present invention during c-type liquid tank.
The present invention another scheme be：The present invention include harbour, harbour provided with the first pipeline group, second pipe group and Leader cable, the marine of quayside stores hull, one end of the first pipeline group provided with several LNG liquefaction modules and several LNG LNG imports for connecting LNG cargo ships, the other end of the first pipeline group is used to being communicated to land gas field, the first pipeline group and Second pipe group connects across by manifold, and second pipe group branches to each LNG liquefaction modules by several flexible pipes In each LNG storage hulls；It is equipped with each LNG liquefaction module in central station of floating dock, leader cable and is provided with master control line, each central station of floating dock is equal It is connected to by the first sub-control line on master control line, master control line is connected to each LNG by the second sub-control line and stored on hull.
Each LNG liquefaction module substituted for LNG electricity generation modules and LNG gasification module.The natural gas that i.e. land gas field is produced The first pipeline group, second pipe group and flexible pipe can be passed sequentially through to be input in each LNG liquefaction modules, LNG liquefaction module lifes The flexible pipe passed sequentially through on harbour and second pipe group of production are input to each LNG storage hull storages, then when LNG cargo ships After landing pier, each LNG LNG for storing hull storage are input to by the second pipe group and the first pipeline group on harbour In LNG cargo ships, external LNG transports are realized.
In summary, when each LNG, which stores hull, is used for LNG storage and transhipment, each LNG stores hull from large-scale LNG cargo ships or from LNG station on the bank is by each conduit acceptor and stores LNG, then can be by each pipeline to middle-size and small-size LNG Cargo ship, LNG filling ship, LNG tank car, land power station or land gasification station output LNG, the as can be seen here flexibility of its application And popularity.The larger flexibility of the present invention is embodied at 2 points, and one is the flexibility of reserves, can zoom as desired； Two be the flexibility of function, can be used separately as storage, can also can also be generated electricity with LNG gasification module supply with LNG Module for power supply, power supply can also be supplied simultaneously, and the natural gas on its land that can also be liquefied with LNG liquefaction module and then storage are outer It is defeated.
The present invention it is a kind of can the beneficial effect of flexible combination and unattended floating LNG stocking systems be：
1. the present invention can by realizing LNG storage so that using the LNG of storage carry out incessantly it is continuous generate electricity or Natural gas is supplied, to adapt to the demand of user in real time；
2. structure of the present invention and device are simple, a series of LNG storage hulls of different reserves can be designed to, and it is different Reserves or identical reserves LNG storage hull can flexible combination into various reserves storage device；
3. the present invention can on harbour with other floating installations (the LNG gasification module of floating or the LNG generating moulds of floating Block) and fixing device (LNG receiving terminals, power plant, gasification station, liquefaction station) is used cooperatively on the bank, to customize and realize difference Function；
4. the present invention can greatly shorten construction period and can quickly meet different actual demands with modular approach, Plus unattended, investment and the operation cost of described device are greatly reduced；
5. the service life of the present invention did not lay up up to 30 years, and reduced maintenance cost and stopping caused by maintenance for 20 years Influence is produced, floating storage, outer defeated, transhipment, gasification, the generating of rivers or coastal natural gas is can be widely applied to.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 be the present invention it is a kind of can flexible combination and unattended floating LNG stocking systems the layout of equipment；
Fig. 2 be the present invention it is a kind of can flexible combination and unattended floating LNG stocking systems LNG storage hulls Front view；
Fig. 3 is A-A sectional views in Fig. 2；
Fig. 4 be the present invention it is a kind of can flexible combination and unattended floating LNG stocking systems LNG storage hulls Top view.
Wherein:1. harbour；2. the first pipeline group；3. second pipe group；4. leader cable；5.LNG electricity generation modules；6.LNG gas Change module；7.LNG storage hulls, 701. ballast tanks, 702. first empty cabins, 703. second empty cabins, 704. the 3rd empty cabins, 705.LNG holding bays, 706. air chambers；8.LNG cargo ships；9. flexible pipe；10. the first sub-control line；11. the second sub-control line；12. pressure Vent valve mast；13.LNG loading/unloading platforms；14. electrical equipment distribution box；15. about fore-and-aft gangway；16. mooring gear；17. output electricity Cable；18. central control room；19. service platform.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As Figure 1-Figure 4 it is of the invention it is a kind of can flexible combination and unattended floating LNG stocking systems reality Apply example one, it includes harbour 1, harbour 1 is provided with the first pipeline group 2, second pipe group 3 and leader cable 4, the side of harbour 1 it is marine Hull 7 is stored provided with LNG electricity generation modules 5, LNG gasification module 6 and several LNG, one end of the first pipeline group 2 is used to connect The LNG outlets of LNG cargo ships 8, the other end of the first pipeline group 2 is used to be communicated to land user, the first pipeline group 2 and the second pipe Road group 3 connects across by manifold, and second pipe group 3 branches to LNG electricity generation modules 5, LNG gas by several flexible pipes 9 Change in module 6 and each LNG storage hulls 7, LNG electricity generation modules 5 pass through output by a point cable connection leader cable 4, leader cable 4 Cable 17 is connected to land user；It is equipped with LNG electricity generation modules 5 and LNG gasification module 6 in central station of floating dock, leader cable 4 provided with master Line is controlled, each central station of floating dock is connected on master control line by the first sub-control line 10 of the envelope in point cable, and master control line passes through second Sub-control line 11 is connected in parallel on each LNG storage hulls 7.
First, after LNG cargo ships 8 are rested against on harbour 1, the LNG outlets and one end of the first pipeline group 2 of LNG cargo ships 8 Connection, the LNG of LNG cargo ships 8 enters to each LNG storage hulls from the first pipeline group 2, second pipe group 3 and flexible pipe 9 successively Stored in 7, the LNG of each LNG storage hulls 7 can enter LNG electricity generation modules 5 and LNG by flexible pipe 9 and second pipe group 3 Gasify module 6, and the natural gas after the electric power and LNG gasification module 6 that LNG electricity generation modules 5 are produced gasify passes sequentially through flexible pipe 9, the Two pipeline groups 3 and the first pipeline group 2 are input to land user and used, while the collection on LNG electricity generation modules 5 and LNG gasification module 6 Control control and monitoring function that whole system will be born in room.In brief, the pipeline group 2 of second pipe group 3 and first can be regarded as Pipeline combination, single LNG pipelines or the single natural gas line of LNG/ natural gases.The present embodiment can be by realizing LNG Storage so that using the LNG of storage carry out it is continuous incessantly generate electricity or supply natural gas, to adapt to the need of user in real time Ask.
The present embodiment structure and device are simple, can be designed to a series of LNG storage hulls 7 of different reserves, and not With reserves or identical reserves LNG storages hull 7 can flexible combination into the storage device of various reserves, and spirit can be changed on demand Allotment quantity living to meet demand of the user to LNG, and can neatly with floating LNG electricity generation modules 5 and LNG gasification module 6 are combined into complete supply or electric power system.
The present embodiment can (the LNG gasification module 6 of floating or the LNG of floating generate electricity with other floating installations on harbour 1 Module 5) and fixing device (LNG receiving terminals, power plant, gasification station, liquefaction station) is used cooperatively on the bank, to customize and realize not Same function.
The present embodiment can greatly shorten construction period and can quickly meet different actual demands with modular approach, Plus unattended, investment and the operation cost of described device are greatly reduced.
The service life of the present embodiment did not lay up up to 30 years, and reduced maintenance cost and stopping caused by maintenance for 20 years Influence is produced, floating storage, outer defeated, transhipment, gasification, the generating of rivers or coastal natural gas is can be widely applied to.
Specifically, LNG store hull 7 hull bottom spliced by multiple ballast tanks 701 set gradually along captain direction and Into two sides of a ship of LNG storage hulls 7 are spliced by multiple along the first empty cabin 702 that captain direction is set gradually, LNG storages The stem and ship stern of hull 7 are equipped with the empty cabin 703 of L-shaped second, and the top of LNG storage hulls 7 is provided with the 3rd empty cabin 704, Two ends of the one right angle end in two second empty cabins 703 respectively with the 3rd empty cabin 704 are fixed, two second empty cabins 703 it is another Individual right angle end is fixed with the LNG hull bottom two ends for storing hull 7 respectively, each ballast tank 701, each first empty empty cabin in cabin 702 and the 3rd 704 constitute the LNG holding bays 705 of rectangular cavity.
In said structure, LNG storage hulls 7 use full duplex shell structure, are divided into shipboard by longitudinal bulkhead and transverse bulkhead The empty cabin 702 of port and starboard symmetrical first, hull bottom is set to ballast tank 701, with ensure the present invention meet specification stability requirement and Job safety under environmental condition；Using duplex shell structure as the empty cabin of isolation, LNG holding bays 705 are safeguarded using film-type liquid goods System, it can be ensured that LNG is stored in atmospheric low-temperature state.
Further, LNG stores hull 7 in cuboid or square, the 3rd empty cabin 704 and all second empty cabin 703 Total volume of compartment 8000m3；The volume of compartment 60000m of LNG holding bays 7053；The sum of ballast tank 701 is three, all ballast tanks 701 Total volume of compartment 12700m3；First empty cabin 702 is distributed with three, the first all empty cabins 702 in LNG two sides of a ship for storing hull 7 Total volume of compartment 11500m3.The capacity of LNG holding bays 705 is big, and electric power and monitoring system are provided by outside, and structure and device are simple, A series of storage device of different reserves can be designed to, and the LNG holding bays 705 of different reserves or identical reserves can Storage device of the flexible combination into various reserves.
Further, LNG stores the pipeline being fixed with above in the middle part of the stem of hull 7 for arranging release natural gas Pressure vent valve mast 12, improves security.
Further, the ship midship starboard of LNG storages hull 7 is provided with LNG loading/unloading platforms 13, the and of electrical equipment distribution box 14 Fore-and-aft gangway 15 up and down, LNG loading/unloading platforms 13 connect second pipe group 3 by flexible pipe 9, and electrical equipment distribution box 14 passes through point cable and connected Connect leader cable 4；Fore-and-aft gangway 15 when needing personnel to go on board and operating for passing through above and below setting, it is possible to achieve unmanned on duty, can be quick Meet different actual demands.
Further, LNG store hull 7 ship stern in the middle part of provided with service platform 19 and for centralized arrangement pipeline, pump sump, Sounding gear, pressure tester, temperature measuring equipment, the air chamber 706 of manhole and/or safety valve, the middle part of service platform 19 are provided with breach, Air chamber 706 is simple in construction in breach, convenient that each device is installed on service platform 19.
Further, LNG storages hull 7 is fixed on harbour 1 or bank by mooring gear 16.LNG stores the mooring of hull 7 Mode uses topside berthing mode, and the topside of hull two sets two mooring positioning devices 16 respectively, it would however also be possible to employ close form Mooring positioning device substitute, it is preferred to use positioning is fixed in the structure of guide pile, and guide pile is squeezed into below mud line, and mooring is solid Determine effect good.Its function is hull being fixed on quayside or bank, and allow hull underloading and it is fully loaded between due to drinking water Change moved up and down along mooring gear.
Further, the side of output cable 17 be connected with for whole floating LNG stocking systems carry out centralized Control and The central control room 18 of monitoring management.When being not provided with LNG electricity generation modules 5 and LNG gasification module 6 in whole application system, land Upper 140 central control rooms 18 set are used to store each LNG hull 7 and the safe operation of whole system carries out concentration control System/monitoring management.
It is preferred that, the hull of the LNG storage hulls 7 of the present embodiment is always about 71m, molded breadth about 48m, moldeed depth about 24.2m, most Big drinking water about 14m, about 48000 tons of displacement；LNG operations lean on defeated speed outside charge and discharge rubber lined hose mode, LNG to be to the maximum using other 3600m3/h。
Further, LNG holding bays 705 are A types liquid tank, Type B liquid tank and c-type liquid tank, or film-type liquid goods is tieed up Protecting system, has a wide range of application.Certainly, single shell structure form can be used using hull of the present invention during c-type liquid tank.
Embodiment two
Embodiment two is with the difference of embodiment one：Can flexible combination and unattended floating LNG stocking systems include Harbour 1, harbour 1 is provided with the first pipeline group 2, second pipe group 3 and leader cable 4, and the marine of the side of harbour 1 is provided with several LNG The module that liquefies and several LNG store hull 7, and one end of the first pipeline group 2 is used for the LNG imports for connecting LNG cargo ships 8, the The other end of one pipeline group 2 is used to be communicated to land gas field, and the first pipeline group 2 connects into ten with second pipe group 3 by manifold Font, second pipe group 3 branches to each LNG liquefaction modules by several flexible pipes 9 and each LNG is stored in hull 7；Respectively It is equipped with LNG liquefaction modules in central station of floating dock, leader cable 4 and is provided with master control line, each central station of floating dock is connected by the first sub-control line 10 To master control line, master control line is connected to each LNG by the second sub-control line 11 and stored on hull 7.The other structures of the present embodiment Be the same as Example one.
That is each LNG liquefaction module of embodiment two substituted for LNG electricity generation modules 5 and LNG gasification module in embodiment one 6.The operation principle of the present embodiment is with the operation principle of embodiment one on the contrary, the natural gas of i.e. land gas field production can also be successively By the first pipeline group 2, second pipe group 3 and flexible pipe 9 be input to each LNG liquefy module in, LNG liquefaction module production according to Secondary flexible pipe 9 and second pipe group 3 by harbour 1 is input to each LNG storage hulls 7 and stored, then when LNG cargo ships 8 After landing pier 1, the LNG that each LNG storage hulls 7 are stored is defeated by the pipeline group 2 of second pipe group 3 and first on harbour 1 Enter into LNG cargo ships 8, realize external LNG transports.
In summary, when each LNG, which stores hull 7, is used for LNG storage and transhipment, each LNG stores hull 7 from large-scale LNG cargo ships 8 or from LNG station on the bank is by each conduit acceptor and stores LNG, then can be by each pipeline to middle-size and small-size LNG cargo ships, LNG filling ship, LNG tank car, land power station or land gasification station output LNG, the as can be seen here spirit of its application Activity and popularity.The larger flexibility of the present embodiment is embodied at 2 points, and one is the flexibility of reserves, can be amplified as desired Reduce；Two be the flexibility of function, can be used separately as storage, can also supply, can also match somebody with somebody with LNG gasification module 6 LNG electricity generation modules 5 are powered, and power supply can also be supplied simultaneously, and the natural gas on its land that can also be liquefied with LNG liquefaction module is then Storage is outer defeated.
It should be appreciated that specific embodiment described above is only used for explaining the present invention, it is not intended to limit the present invention.By Among the obvious changes or variations that the spirit of the present invention is extended out is still in protection scope of the present invention.

Claims (10)

1. a kind of can flexible combination and unattended floating LNG stocking systems, it is characterised in that：Including harbour (1), the code Head (1) is provided with the first pipeline group (2), second pipe group (3) and leader cable (4), and the marine of harbour (1) side is provided with LNG Electricity generation module (5), LNG gasification module (6) and several LNG storage hulls (7), one end of first pipeline group (2) is used for Connect the LNG outlets of LNG cargo ships (8), the other end of first pipeline group (2) is used to being communicated to land user, described the One pipeline group (2) connects across with second pipe group (3) by manifold, and the second pipe group (3) is soft by several Pipe (9) is branched in LNG electricity generation modules (5), LNG gasification module (6) and each LNG storage hulls (7), the LNG generatings mould Block (5) is connected to land user by a point cable connection leader cable (4), the leader cable (4) by output cable (17)；It is described It is equipped with LNG electricity generation modules (5) and LNG gasification module (6) in central station of floating dock, the leader cable (4) and is provided with master control line, each collection control Room is connected on master control line by the first sub-control line (10) of the envelope in point cable, and the master control line passes through the second sub-control line (11) it is connected in parallel on each LNG storage hulls (7).
2. it is according to claim 1 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：The hull bottom of the LNG storage hulls (7) is spliced by multiple ballast tanks (701) set gradually along captain direction, institute Two sides of a ship for stating LNG storage hulls (7) are spliced by multiple along the first empty cabin (702) that captain direction is set gradually, described The stem and ship stern of LNG storage hulls (7) are equipped with the empty cabin (703) of L-shaped second, the top of the LNG storage hulls (7) Provided with the 3rd empty cabin (704), the two ends of the right angle ends of two second empty cabins (703) respectively with the 3rd empty cabin (704) are fixed, Another right angle end of two second empty cabins (703) is fixed with the LNG hull bottom two ends for storing hull (7) respectively, each ballast tank (701), each first empty cabin (702) and the 3rd empty cabin (704) constitute the LNG holding bays (705) of rectangular cavity.
3. it is according to claim 2 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：The LNG storage hulls (7) are in cuboid or square, the described 3rd empty cabin (704) and all second empty cabin (703) Total volume of compartment 8000m3；The volume of compartment 60000m of the LNG holding bays (705)3；The sum of the ballast tank (701) is three, institute Total volume of compartment 12700m of some ballast tanks (701)3；Described first empty cabin (702) is distributed in LNG two sides of a ship for storing hull (7) There are three, total volume of compartment 11500m of all the first empty cabin (702)3。
4. according to any one of claim 1-3 it is a kind of can flexible combination and unattended floating LNG stocking systems, It is characterized in that：Pipeline for arranging release natural gas is fixed with above in the middle part of the stem of LNG storage hull (7) Pressure vent valve mast (12).
5. it is according to claim 4 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：The ship midship starboard of LNG storage hull (7) is provided with LNG loading/unloading platforms (13), electrical equipment distribution box (14) and up and down Fore-and-aft gangway (15), the LNG loading/unloading platforms (13) connect second pipe group (3), the electrical equipment distribution box by flexible pipe (9) (14) a point cable connection leader cable (4) is passed through.
6. it is according to claim 5 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：Provided with service platform (19) and for centralized arrangement pipeline, pump sump, depth measurement dress in the middle part of the ship stern of the LNG storage hulls (7) Put, the air chamber (706) of pressure tester, temperature measuring equipment, manhole and/or safety valve, the middle part of the service platform (19) is provided with lacking Mouthful, the air chamber (706) is in breach.
7. it is according to claim 6 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：The LNG storage hulls (7) are fixed on harbour (1) or bank by mooring gear (16).
8. it is according to claim 7 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：Output cable (17) side is connected with for carrying out centralized Control and monitoring management to whole floating LNG stocking systems Central control room (18).
9. it is according to claim 8 it is a kind of can flexible combination and unattended floating LNG stocking systems, its feature exists In：The LNG holding bays (705) are A types liquid tank, Type B liquid tank and c-type liquid tank.
10. a kind of can flexible combination and unattended floating LNG stocking systems, it is characterised in that：It is described including harbour (1) Harbour (1) is provided with the first pipeline group (2), second pipe group (3) and leader cable (4), the harbour (1) if the marine of side is provided with Dry LNG liquefaction module and several LNG storage hulls (7), one end of first pipeline group (2) are used to connect LNG transports The LNG imports of ship (8), the other end of first pipeline group (2) is used to be communicated to land gas field, first pipeline group (2) Across is connected by manifold with second pipe group (3), the second pipe group (3) is branched to by several flexible pipes (9) Each LNG liquefies in module and each LNG storage hulls (7)；Central station of floating dock, the leader cable are equipped with each LNG liquefaction module (4) master control line is provided with, each central station of floating dock is connected on master control line by the first sub-control line (10), and the master control line passes through second Sub-control line (11) is connected on each LNG storage hulls (7).
CN201710383916.3A 2017-05-26 2017-05-26 It is a kind of can flexible combination and unattended floating LNG stocking systems Pending CN107228275A (en)

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