CN103153775B - Ship for conveying liquified natural gas storage vessel - Google Patents

Abstract

The ship of a kind of conveying liquified natural gas storage vessel comprises: a cabin, is arranged on hull, has upper shed；Multiple first upper support and the second upper support, be arranged on length direction in the width direction in the upper part in described cabin and be divided into multiple opening with the upper part by described cabin, wherein stores container and is perpendicularly inserted in described opening and is supported；And lower support body, it is installed in below described cabin and supports the bottom storing container being inserted in described opening.In accordance with the present invention, it is possible to effectively and stably shipping storage liquefied natural gas or the storage container of pressurized liquefied natural gas pressurized liquefied natural gas that pressurizes under a predetermined.These store container and can transport via the ship after improving existing container ship simply.Particularly, the such as structure such as pillar and lashing bridge can be utilized in described container carrier to support top cabinet case, thus make the time of the ship of manufacture described storage container and cost minimum.

Description

Ship for conveying liquified natural gas storage vessel

Technical field

The present invention relates to a kind of liquefied natural gas (LNG) storage vessel carrier, more particularly, it relates to can be effectively and stably Conveying liquified natural gas storage vessel, and the liquefied natural gas (LNG) storage vessel carrier of manufacturing cost and time can be reduced.

Background technology

It is, in general, that liquefied natural gas (liquefied natural gas, LNG) is a kind of by atmosheric pressure By natural gas, mainly (methane (Methane)), the cryogenic liquid being cooled to the low temperature state of-162 DEG C and produce.Liquefaction sky So air volume is about the 1/600 of natural gas volume.Liquefied natural gas is water white.Known for long-distance transportation, liquid Change natural gas, because conevying efficiency, higher than gaseous state, there is cost benefit.

Owing to substantial amounts of cost consumption is in the construction of manufacturer and the construction of carrier, therefore in order to reduce cost, Liquefied natural gas is applied to extensive long-distance transportation.On the other hand, it is known that on a small scale short distance transport, pipeline or Compressed natural gas (Compressed Natural Gas, CNG) has cost benefit.But, using pipeline to carry out transport may It is subject to geographical restriction and environmental pollution can be caused, and the conevying efficiency of CNG is relatively low.

Need high cost for liquefied natural gas being assigned to the conventional method of area of consumption, and be difficult to respond neatly disappear Take the different demands on ground.Further, since be necessary at the storage tank that area of consumption offer is independent, therefore higher infrastructure is needed to become This, and need substantial amounts of time and work to unload liquefied natural gas.

Additionally, the liquefaction point that natural gas is at atmosheric pressure is-163 DEG C.If applying predetermined pressure, then natural gas Liquefaction point will be above liquefaction point at atmosheric pressure.This characteristic can reduce the procedure of processing in liquefaction process, such as Acid gas (Acid gas) removing and gas reducing liquid (natural gas liquid, NGL) fractional distillation (Fractionation).This Lift the reduction causing equipment and place capacity.Therefore, it can reduce liquefied natural gas manufacturing cost.

But, the conventional LNG tank being arranged in the boats and ships with equipment for gasification or liquefied natural gas receiving station Size limited.Additionally, it is while reflecting above-mentioned liquefied natural gas characteristic, it is unsuitable for cost-effectively storing liquefaction natural Gas.Be difficult to according to the different demands of consumer easily by liquefied natural gas transport to area of consumption.

In order to solve problem above, have been developed over for storing and deliver common liquefied natural gas or under a predetermined The storage container of the pressurized liquefied natural gas of pressurization.

These LNG are stored container and are difficult to be transported by conventional liquefied natural gas carrier or freighter.Accordingly, it would be desirable to exploitation Kind can the most conveying liquified natural gas storage vessel and the carrier of manufacturing cost and time can be reduced.

Detailed description of the invention

Technical problem

One aspect of the present invention is that it can effectively and stably be transported for a kind of liquefied natural gas (LNG) storage vessel carrier Defeated for storing common liquefied natural gas or the storage container of pressurized liquefied natural gas pressurizeed under a predetermined.

Another aspect of the invention is for time and the cost reduced for manufacturing liquefied natural gas (LNG) storage vessel carrier, Improve economic feasibility.

The solution of problem

According to one embodiment of the invention, a kind of liquefied natural gas (LNG) storage vessel carrier comprises: one or more cargo holds, quilt It is arranged on hull, thus its opened upper end；Multiple first upper support and the second upper support, its in the width direction and Length direction is arranged on described cargo hold and is divided into multiple opening with the upper part by described cargo hold, wherein stores container and vertically inserts Enter in described opening and be supported；And lower support body, it is installed in below described cargo hold and support is inserted into described The bottom storing container in opening.

Described liquefied natural gas (LNG) storage vessel carrier can additionally comprise multiple bracers, its through be arranged on described cargo hold with And the some parts of the inner surface of described first upper support and described second upper support or whole part are to support institute State the side storing container.

Described bracer can be arranged to support the front side of described storage container and rear side and left side and right side, and Described bracer can have the curvature supporting surface corresponding to the curvature of described storage container outer surface.

Can arrange multiple described lower support body, the plurality of lower support body can vertically upward be arranged on described On the bottom of cargo hold, and reinforcement members can be through installing to maintain the gap between described lower support body.

Container loading stage can be set with delivery cabinet case and described storage container.

Described liquefied natural gas can be the pressurized fluid of liquefaction at a temperature of 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C Change natural gas, and described storage container can have dual structure.Can be in the dual structure of described storage container with described Store container inside between interface channel is set in case described storage container dual structure intrinsic pressure with described store hold Device intrinsic pressure between reach pressure balance.

According to a further embodiment of the invention, a kind of liquefied natural gas (LNG) storage vessel carrier comprises: multiple first tops are propped up Support body and the second upper support, it is installed on the cargo hold being arranged on hull, thus by the upper part of described cargo hold every Becoming multiple opening, wherein inserting the storage container in described opening is to be propped up by described first upper support and described second top Support body supports.

Described liquefied natural gas can be the pressurized fluid of liquefaction at a temperature of 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C Change natural gas, and described storage container can have dual structure.Can be in the dual structure of described storage container with described Store container inside between interface channel is set in case described storage container dual structure intrinsic pressure with described store hold Device intrinsic pressure between reach pressure balance.

The effect of invention

In accordance with the present invention, it is possible to effectively and stably shipping storage liquefied natural gas or adding of pressurizeing under a predetermined The storage container of pressure liquefied natural gas.These store container and can also transport via improving existing container carrier simply Defeated.Particularly, such as pillar (stanchion) and lashing bridge (lashing can be utilized in described container carrier Etc. bridge) structure supports top cabinet case, thus makes the time of manufacture described storage container carrier and cost minimum.

Due to the offer room, lower section at described storage container, therefore different pipes and equipment can be easily installed.Having can Can prevent the container that stores loaded from hindering as the required visual field of described carrier navigation.

Accompanying drawing explanation

Fig. 1 is the flow chart showing the pressurized liquefied natural gas manufacture method according to the present invention.

Fig. 2 is to show the configuration figure that the pressurized liquefied natural gas according to the present invention manufactures system.

Fig. 3 is the flow chart showing the pressurized liquefied natural gas distribution method according to the present invention.

Fig. 4 is the configuration figure illustrating the pressurized liquefied natural gas distribution method according to the present invention.

Fig. 5 is to illustrate the side view of pressure vessel used by the pressurized liquefied natural gas distribution method according to the present invention.

Fig. 6 is the configuration figure of another example illustrating the pressurized liquefied natural gas distribution method according to the present invention.

Fig. 7 is the perspective view illustrating the LNG tank according to the present invention.

Fig. 8 (a), Fig. 8 (b) and Fig. 8 (c) are the perspectives illustrating the different types of LNG tank according to the present invention Figure.

Fig. 9 is the configuration figure of the example illustrating the LNG tank according to the present invention.

Figure 10 is the configuration figure of another example illustrating the LNG tank according to the present invention.

Figure 11 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to first embodiment of the invention.

Figure 12 is another of connection member illustrating the liquefied natural gas (LNG) storage vessel according to first embodiment of the invention The sectional view of example.

Figure 13 is the sectional view of the operation illustrating the liquefied natural gas (LNG) storage vessel according to first embodiment of the invention.

Figure 14 is the partial section view illustrating the liquefied natural gas (LNG) storage vessel according to second embodiment of the invention.

Figure 15 is the partial section view illustrating the liquefied natural gas (LNG) storage vessel according to third embodiment of the invention.

Figure 16 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to four embodiment of the invention.

Figure 17 is the sectional view of the line A-A ' acquirement along Figure 16.

Figure 18 is the sectional view of the line B-B ' acquirement along Figure 17.

Figure 19 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to fifth embodiment of the invention.

Figure 20 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to sixth embodiment of the invention.

Figure 21 (a) and Figure 21 (b) is the sectional view of the line C-C ' acquirement along Figure 20.

Figure 22 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to seventh embodiment of the invention.

Figure 23 is the configuration figure illustrating the liquefied natural gas (LNG) storage vessel according to eighth embodiment of the invention.

Figure 24 is the configuration figure illustrating the liquefied natural gas (LNG) storage vessel according to ninth embodiment of the invention.

Figure 25 is the configuration figure illustrating the liquefied natural gas (LNG) storage vessel according to tenth embodiment of the invention.

Figure 26 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to eleventh embodiment of the invention.

Figure 27 is connection member another illustrating the liquefied natural gas (LNG) storage vessel according to eleventh embodiment of the invention The sectional view of one example.

Figure 28 (a) and Figure 28 (b) is to illustrate the liquefied natural gas (LNG) storage vessel according to eleventh embodiment of the invention The sectional view of another example of connection member.

Figure 29 is connection member another illustrating the liquefied natural gas (LNG) storage vessel according to eleventh embodiment of the invention The sectional view of one example.

Figure 30 is the putting of critical piece illustrating the liquefied natural gas (LNG) storage vessel according to twelveth embodiment of the invention Big figure.

Figure 31 is to illustrate the buffering provided in the liquefied natural gas (LNG) storage vessel according to twelveth embodiment of the invention The perspective view of parts.

Figure 32 (a) and Figure 32 (b) is to illustrate according in the liquefied natural gas (LNG) storage vessel of twelveth embodiment of the invention The perspective view of another example of the buffer unit provided.

Figure 33 is to illustrate the liquefied natural gas according to the present invention to manufacture the configuration figure of device.

Figure 34 is the side view illustrating the floating structure according to the present invention, and described floating structure has storage tank toter.

Figure 35 is the front view illustrating the floating structure according to the present invention, and described floating structure has storage tank toter.

Figure 36 is the side view of the operation illustrating the floating structure according to the present invention, and described floating structure has storage tank delivery Device.

Figure 37 is to illustrate for maintaining joining of the system of the high pressure of the pressurized liquefied natural gas storage container according to the present invention Put figure.

Figure 38 is the configuration figure illustrating the liquefying plant according to thirteenth embodiment of the invention, and described liquefying plant has Discerptible heat exchanger.

Figure 39 is the configuration figure illustrating the liquefying plant according to fourteenth embodiment of the invention, and described liquefying plant has Discerptible heat exchanger.

Figure 40 is the elevational sectional view illustrating the liquefied natural gas (LNG) storage vessel carrier according to the present invention.

Figure 41 is the side cross-sectional, view illustrating the liquefied natural gas (LNG) storage vessel carrier according to the present invention.

Figure 42 is the plane graph of the critical piece illustrating the liquefied natural gas (LNG) storage vessel carrier according to the present invention.

Figure 43 is the configuration figure illustrating the solidified carbon dioxide removing system according to the present invention.

Figure 44 is the configuration figure of the operation illustrating the solidified carbon dioxide removing system according to the present invention.

Figure 45 is the sectional view of the attachment structure illustrating the liquefied natural gas (LNG) storage vessel according to the present invention.

Figure 46 is the perspective view of the attachment structure illustrating the liquefied natural gas (LNG) storage vessel according to the present invention.

Figure 47 is the sectional view of the operation of the attachment structure illustrating the liquefied natural gas (LNG) storage vessel according to the present invention.

Detailed description of the invention

The one exemplary embodiment of the present invention is described in detail hereinafter with reference to accompanying drawing.Below example can also be changed to Multiple kenel, the scope of the present invention is not limited to below example.

In entire disclosure, in all drawings and Examples of the present invention, similar component symbol represents similar portion Part.

Fig. 1 is the flow chart showing the pressurized liquefied natural gas manufacture method according to the present invention.

As shown in fig. 1, pressurization is manufactured in the following manner according to the pressurized liquefied natural gas manufacture method of the present invention Liquefied natural gas: the water in removing natural gas, and without the technique removing the acid gas in the natural gas supplied by gas field 1； And make natural gas liquefaction by pressurization and cooling, and without natural gas being fractionated into gas reducing liquid (Natural Gas Liquid, NGL) technique.To this end, pressurized liquefied natural gas manufacture method can comprise dehydration S11 and liquefaction step S12。

In dehydration S11, by dewatering process removing natural gas in water, such as steam, and without removing by The technique of the acid gas (Acid gas) in the natural gas of gas field 1 supply.It is to say, natural gas is performed dewatering process (Dehydration), it is not necessary to experience acid gas removing process.Omit acid gas removing process and can make simplified manufacturing process, and reduce Cost of investment and maintenance cost.Additionally, due in dehydration S11, be stripped of the water in natural gas fully, therefore likely Prevent natural gas from issuing unboiled water freeze at the operation temperature and pressure of the system of manufacture.

In liquefaction step S12, by making the natural of dehydration at a temperature of 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C Gas liquefaction, manufactures pressurized liquefied natural gas (Natural Gas Liquid, NGL), it is not necessary to fractionation process (Fractionation).For example, pressure can be manufactured and be 17 bars and temperature is the pressurized liquefied natural gas of-115 DEG C. Owing to eliminating the technique fractionating out NGL (that is, liquid hydrocarbon) from natural gas, therefore liquefied natural gas manufacturing process can obtain letter Change, and reduce for natural gas cooling and liquefaction being arrived the power consumption of cryogenic temperature.Therefore, cost of investment and maintenance cost It is minimized, so that the manufacturing cost of liquefied natural gas reduces.

In the pressurized liquefied natural gas manufacture method according to the present invention, the condition of gas field 1 can be make manufactured Natural gas have 10% or less than 10% carbon dioxide (CO₂).Additionally, when natural gas after dehydration S11 exists The amount of carbon dioxide be 10% or during less than 10%, can additionally comprise for freezing in liquefaction step S12 And the carbon dioxide removal step S13 of carbon dioxide removal (Freezing).

The amount of carbon dioxide is more than 2% or equal to or less than 10% present in the natural gas after dehydration S11 Time, carbon dioxide removal step S13 can be performed.When the amount of carbon dioxide be 2% or less than 2% time, natural gas is in pressurized fluid Change natural gas temperature and will exist with liquid condition under pressure condition described below.Therefore, even if not performing carbon dioxide Removing step S13, manufacture and the transport of pressurized liquefied natural gas are the most unaffected.When carbon dioxide amount more than 2% and etc. In or less than 10% time, natural gas is frozen into as solid state.Therefore, carbon dioxide removal step S13 is carried out to realize liquid Change.

After liquefaction step S12, storing step S14 can be performed, with the pressurized liquefied sky that will manufacture in liquefaction step S12 So gas is stored in the storage container with dual structure.Thus pressurized liquefied natural gas is transported desired position.To this end, Trafficking step S15 can be performed, by boats and ships, via independent or groups of storage container traffic pressurized liquefied natural gas.Also may be used With by boats and ships, via there is the independent or groups of storage container of tank intensity of enhancing to transport pressurized liquefied natural gas.

In trafficking step S15, the construction storing container used and manufacture material should make to store container and can withstand 13 bars Pressure and the temperature of-120 DEG C to-95 DEG C to 25 bars.Additionally, the boats and ships for container for conveying can be existing barge Or container ship rather than independent boats and ships, such as liquefied natural gas carrying ship.Therefore, it can reduce for container for conveying Expense.

In such a case, it is possible to be loaded into storing container without reconstruction or through few barge reconstructed or counter In ship, and transported by them.Plan ship can be delivered based on individually storing container according to the requirement of area of consumption The storage container of oceangoing ship transport.

Meanwhile, be delivered to consumer after trafficking step S15 stores pressurized liquefied natural gas stored in container Step S16 is regasified by being located in experience in final consumption, and with the form supply of gaseous natural gas.Regasify for execution The Regasification plant of step S16 can be configured with high-pressure pump and carburator.At individually area of consumption such as such as power plant or maker etc. In the case of, can install from Regasification plant.

Fig. 2 is to show the configuration figure that the pressurized liquefied natural gas according to the present invention manufactures system.

As shown in Figure 2, manufacture system 10 according to the pressurized liquefied natural gas of the present invention and can comprise dehydration equipment 11, use In the gas dehydration making gas field 1 be supplied；With liquefaction device 12, it is used for the natural gas liquid of dehydration is melted into 13 bars to 25 The pressure of bar and the temperature of-120 DEG C to-95 DEG C, and produce pressurized liquefied natural gas.

Dehydration equipment 11 performs dewatering process (Dehydration), with in the natural gas that removing is supplied by gas field 1 Water (such as steam), is therefore prevented from natural gas and freezes under the operation temperature and pressure of described manufacture system.Now, from Gas field 1 is fed to the natural gas of dehydration equipment 11 and does not suffers from acid gas removing process.Therefore, it can simplify liquefied natural gas system Make technique, and cost of investment and maintenance cost can be reduced.

Liquefaction device 12 is by making the natural gas liquefaction of dehydration at a temperature of 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C Manufacture pressurized liquefied natural gas.For example, liquefaction device 12 can produce pressure and is 17 bars and temperature is-115 DEG C Pressurized liquefied natural gas.To this end, liquefaction device 12 can comprise compressor and cooler, it is used for compressing and cooling down Low Temperature Liquid Body.The natural gas supplied by dehydration equipment 11 is supplied to liquefaction device 12, and experiences liquefaction step and without NGL fractional distillation work Skill.Owing to eliminating NGL (Natural Gas Liquid) fractionation process (Fractionation) so that being manufactured into of system This and maintenance cost are minimized, and thus can reduce the manufacturing cost of liquefied natural gas.

When in the natural gas supplied by dehydration equipment 11 carbonated amount be 10% or less than 10% time, according to this The pressurized liquefied natural gas of invention manufactures system 10 can additionally comprise carbon dioxide eliminating equipment 13, is used for freezing (Freezing) carbon dioxide carbon dioxide is removed from natural gas.

Only in the natural gas supplied by dehydration equipment 11, the carbonated amount of institute more than 2% or equals to or less than When 10%, carbon dioxide eliminating equipment 13 just can from natural gas carbon dioxide removal.It is to say, when contained in natural gas The amount of carbon dioxide be 2% or less than 2% time, natural gas under the conditions of the temperature and pressure of pressurized liquefied natural gas with liquid State exists.Therefore need not carbon dioxide removal.When in natural gas, the carbonated amount of institute more than 2% and equals to or less than When 10%, natural gas is frozen into as solid state.Therefore, it is necessary to remove titanium dioxide at carbon dioxide eliminating equipment 13 Carbon.

The pressurized liquefied natural gas manufactured by liquefaction device 12 is stored in storage facilities 14 and has the storage of dual structure Deposit in container, and transport desired area of consumption by storing container traffic.

Fig. 3 is the flow chart showing the pressurized liquefied natural gas distribution method according to the present invention.

As shown in Figure 3, make natural gas pressurize according to the pressurized liquefied natural gas distribution method of the present invention and cool down with system Make pressurized liquefied natural gas；Pressurized liquefied natural gas is stored in storage container；Load and store container；Container traffic will be stored To area of consumption；Store container in area of consumption unloading, and be connected to consume the regas system being located in by storing container.To this end, root Trafficking step S21, unloading step S22 and Connection Step S23 can be comprised according to the pressurized liquefied natural gas distribution method of the present invention.

As shown in Figure 4, in trafficking step S21, will be by 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C temperature Under make the pressurized liquefied natural gas manufactured by natural gas liquefaction be stored in transportable storage container 21, be loaded in boats and ships 2, And transport area of consumption.Pressurized liquefied natural gas can be manufactured by above-mentioned pressurized liquefied natural gas manufacture method.For storing The construction storing container 21 and the manufacture material of the pressurized liquefied natural gas manufactured should make described storage container to withstand The pressure of 13 bars to 25 bars and the temperature of-120 DEG C to-95 DEG C.Store container 21 and can have dual structure.Can be by multiple storages Deposit container 21 to be loaded in boats and ships 2.

In trafficking step S21, when area of consumption 3 is positioned at hinterland, can be land by such as trailer or train etc. Vehicles container for conveying.

In unloading step S22, when boats and ships 2 arrive area of consumption 3, store pressurization at area of consumption by unloading equipment unloading The storage container 21 of liquefied natural gas.Store container 21 to unload based on individually storing container.

In Connection Step S23, it is connected to the regas system 23 at area of consumption 3 by storing container 21, thus can make Store the pressurized liquefied natural gas vaporization stored in container 21.By making the pressurized liquefied natural gas vapour stored in storage container 21 The natural gas changed and produce can be supplied to consumer 3a.Meanwhile, as shown in Figure 5, store container 21 and there is nozzle 21a, Flowing in and out and being connected with the vaporization pipeline of regas system 23 for pressurized liquefied natural gas.Nozzle 21a can set Putting the various location in different structure, this depends on that storing container 21 is loaded onto the pose in boats and ships 2 and nozzle 21a It is connected to the pose of regas system 23.Nozzle 21a can have adapter, is used for being connected to pressurized liquefied natural gas storage facilities Adapter and the adapter of regas system 23.

Pressurized liquefied natural gas distribution method according to the present invention can additionally comprise the storage appearance collecting sky from area of consumption 3 Collection step S24 of device 21.

In collecting step S24, by using road transport or boats and ships 2 that empty storage container 21 is collected pressurization Liquefied natural gas manufactures the place at system 10 place.This measure can help to reduce apportioning cost and natural gas supply cost.

As shown in Figure 6, in trafficking step S21, container combination body 22 can be transported.Container combination body 22 is by inciting somebody to action Multiple storage containers 21 are combined into a packaging and provide.Container combination body 22 can have integral nozzle 22a, and it is with individual Not Chu Cun the nozzle (21a in Fig. 5) flowed in and out for pressurized liquefied natural gas provided in container 21 connect formed whole Body.Therefore, by storage container 21 being assembled container combination body 22 and using by integral nozzle 22a in single container The storage container 21 of form, it is possible to reduce be loaded in trafficking step S21, carry out unloading in unloading step S22, Connection Step S23 is connected with regas system 23 and is collected required time and work in collecting step S24.

Container combination body 22 is to be made up of multiple storage containers 21.Therefore, in the place needing a large amount of natural gass, as single Area of consumption, such as power plant or the center of industry, can unload container combination body 22 efficiently.

Additionally, according to the pressurized liquefied natural gas distribution method according to the present invention, need not independent storage tank at area of consumption. And, it is thus only necessary to regas system is provided, and passes through boats and ships or road transport (similar to boats and ships) pressurized liquefied Natural gas manufactures system location to when coming and going between independent area of consumption 3, it is possible to need unloading storage container 21 or container combination Body 22 also collects empty storage container 21 or container combination body 22.Specifically, with regard to Southeast Asia (here, multiple small-sized and in Type area of consumption is dispersed in many island) for, it is possible to make the infrastructure of indivedual area of consumption, these independent storage facilities and The construction of pipeline is minimum.

Fig. 7 is the perspective view illustrating the LNG tank according to the present invention.

As shown in Figure 7, comprising multiple storage container 32 according to the LNG tank 30 of the present invention, it is installed in Main body 31 is internal to be used for storing liquefied natural gas.LNG tank 30 allows will liquefy sky via discharging/charging pipeline 33 So gas is loaded in individual storage container 32 and unloads liquefied natural gas, discharging/charging pipeline 33 from individual storage container 32 It is connected with individual storage container 32, and charging/discharge valve 33a and 33b is wherein installed.

The installation of main body 31 should make multiple storage container 32 be arranged in inside.Main body 31 can comprise and is arranged on each storage Dividing plate (Spacer) 31a between container 32, thus makes these storage containers 32 keeping being spaced separate while, maintains Described arrangement states.

Additionally, main body 31 can also comprise the thermal insulation layer for stoping heat transfer, or for heat insulation dual structure.Main body 31 can have various structure, comprise hexahedron structure, as in this embodiment.Additionally, main body 31 can comprise multiple support Body 31b, thus makes main body 31 and ground separation separate with prevention heat transfer to ground, and main body 31 is to install with stable location and pose On the ground.

As shown in Fig. 8 (a), Fig. 8 (b) and Fig. 8 (c), main body 31 can have reduced size, medium size and bigger chi Very little.Therefore, the quantity storing container 32 and size accommodated in main body 31 can be with standardization.But, the invention is not restricted to Upper example.Main body 31 can be manufactured into the storage container 32 accommodating varying number, and can be by different size manufacture.

Storing container 32 should be so that it can withstands 13 bars and arrives together with the construction of charging/discharging pipeline 33 and manufacture material The pressure of 25 bars and the temperature of-120 DEG C to-95 DEG C, in order to store liquefied natural gas.In order to be able to take pressure above and temperature Condition, is arranged on heat insulating component in storage container 32 and charging/discharging pipeline 33, and stores container 32 and charging/discharging Pipeline 33 has dual structure.Therefore, it is possible to store and transport pressure is that 13 bars to 25 bars and temperature are-120 DEG C to-95 The pressurized liquefied natural gas of DEG C (such as, pressure be 17 bars and temperature is-115 DEG C).

As shown in Figure 9, charging/discharging pipeline 33 is connected to individual storage container 32 and reaches the outside of main body 31.? In charging/discharging pipeline 33, charging/discharge valve 33a and 33b is installed so that liquefied natural gas is to/from storing container 32 Load/unloading can with can not carry out.Therefore, it is located in main body 31 is arranged on consumption, then by charging/discharging pipeline 33 After being connected to regas system or the supply line of area of consumption, liquefied natural gas or natural gas can be supplied immediately.

Charging/discharge valve 33a and 33b can comprise the first independent valve 33a and the first integrated valve 33b.First independent valve 33a be installed individually so that liquefied natural gas to/from store container 32 loading/unloading can with can not carry out.First Integrated valve 33b through install so that liquefied natural gas to/from all storage containers 32 loading/unloading integrally can with can not Enough carry out.If all first independent valve 33a as charging/discharge valve opens, then individual other storage container 32 is permissible It is packaged as single container, and uses as single tank.Additionally, the only first independent valve 33a or the only first integrated valve 33b can be installed as charging/discharge valve.

LNG tank 30 according to the present invention can additionally comprise boil-off gas pipeline 34, in order to discharges by storing The spontaneous boil-off gas of container 32.Boil-off gas pipeline 34 is connected to some or all of storage container 32, and reaches master Body 31 is outside.Boil-off gas pipeline 34 has boil-off gas valve 34a and 34b, opens and closes these valves and can discharge storage container The boil-off gas (BOG) produced in 32.Construction and the manufacture material of boil-off gas pipeline 34 should be so that it can withstand 13 bars Pressure and the temperature of-120 DEG C to-95 DEG C to 25 bars.

Additionally, boil-off gas valve 34a and 34b can comprise the second independent valve 34a and the second integrated valve 34b.Second is single Solely valve 34a be installed individually so that in individual storage container 32 discharge of boil-off gas can with can not carry out.Second is whole Body formula valve 34b through install so that in all storage containers 32 discharge of boil-off gas integrally can with can not carry out.Only Second independent valve 34a or the only second integrated valve 34b can be installed as boil-off gas valve.As described above, if institute Second had individually valve 34a opens, then individual storage container 32 can be packaged as single container, and makes as single tank With.Furthermore, it is possible to only install the second independent valve 34a or only install the second integrated valve 34b.

LNG tank 30 according to the present invention can additionally comprise pressure sensing cells 35 and control unit 36.Pressure Power sensing unit 35 sensing stores the most internal pressure of container 32, and output sensing signal.Control unit 36 receives from pressure The sensing signal of power sensing unit 35 output, and the most internal pressure storing container 32 is shown in and is arranged on outside main body 31 On display unit 37 in portion.In order to measure the most internal pressure storing container 32, pressure sensing cells 35 can be installed Storing on charging/discharging pipeline 33 at the front end of container 32, or may be mounted on overall path, described overall path is Movement to load/unloading liquefied natural gas via charging/discharging pipeline 33.Additionally, control unit 36 can be according to from behaviour The manipulation signal of vertical unit 36a output, controls charging/discharge valve 33a and 33b and boil-off gas valve 34a and 34b, handles single Unit 36a is installed in main body 31 or through installing can carry out wire/wireless communication a long way off.

As shown in Figure 10, heating unit 38 and calorific value can be comprised according to the LNG tank 30 of the present invention (heating value) adjustment unit 39, in order to make from the liquefied natural gas vaporization storing container 32 unloading, and adjust area of consumption Required calorific value.Heating unit 38 through install so that from some or all of storage containers 32 unloading liquefied natural gas vaporization.Heat Value adjustment unit 39 is through installing to adjust the calorific value of the natural gas through heating unit 38.Heating unit 38 and calorific value adjustment unit 39 may be mounted on a pipeline, and on described pipeline, any one or multiple storage container 32 are integrated in charging/discharging pipeline In 33；Or may be mounted in independent line, described independent line is connected to store container 32 and charging/discharging pipeline 33 And make liquefied natural gas pass through under valve action.

Heating unit 38 can comprise plate fins formula heat exchanger 38a and electric heater 38b.Plate fins formula heat exchanger 38a is through peace It is filled with and mainly carrys out heats liquefied natural gas by carrying out heat exchange with air.Electric heater 38b is through installing with to because of through heat exchange Device 38a and the liquefied natural gas that vaporizes carries out post bake.

In the pipeline (such as charging/discharging pipeline 33) installing calorific value adjustment unit 39, bypass valve can be additionally set 41.Bypass line 41 through connect with under bypass valve 41a effect around superheat value adjustment unit 39.Therefore, adjust natural when needs During the calorific value of gas, by the operation of bypass valve 41a by natural gas supply to calorific value adjustment unit 39.In this way, supply has The natural gas of the calorific value needed for area of consumption.When need not the calorific value adjusting natural gas, make natural by the operation of bypass valve 41a Gas via bypass line 41 around superheat value adjustment unit 39.Bypass valve 41a can be a three-way valve or multiple two-way valve.

Additionally, temperature sensing unit 42 and control unit can be additionally comprised according to the LNG tank 30 of the present invention 36, in order to make the natural gas of unloading have the temperature needed for area of consumption.The natural gas that temperature sensing unit 42 sensing is unloaded Temperature.Control unit 36 receives the signal from temperature sensing unit 42, and controls electric heater 38b so that natural gas reaches to set Temperature range.It is arranged on main body 31 outside additionally, the temperature of the natural gas of unloading can be shown in by control unit 36 On display unit 37.

Temperature sensing unit 42 may be mounted at the outlet side of charging/discharging pipeline 33.Additionally, as described above, control Unit 36 can control bypass valve 41a according to the manipulation signal exported by actuation unit 36a.

Therefore, depending on visual function, it is segmented into storing liquefied natural gas according to the LNG tank 30 of the present invention And process the storage container 32 of boil-off gas, and can store liquefied natural gas, process boil-off gas and adjust vaporising device and The storage container 32 of calorific value.LNG tank 30 according to the present invention can be according to the requirement of area of consumption consumer, easily The conveying liquified natural gas in ground or natural gas.

Figure 11 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to first embodiment of the invention.

As shown in Figure 11, inner shell can be comprised according to the liquefied natural gas (LNG) storage vessel 50 of first embodiment of the invention 51, shell 52 and thermal insulation layer parts 53.Inner shell 51 is the metal system of the low temperature by the liquefied natural gas that can withstand internal reservoir Become.Shell 52 seals the outside of inner shell 51, and is made up of the intrinsic pressure steel that can withstand inner shell 51.Thermal insulation layer parts 53 make Heat transfer between inner shell 51 and shell 52 reduces.

Inner shell 51 forms LNG storage space.Inner shell 51 can be by the gold of the low temperature that can withstand liquefied natural gas Genus is made.For example, inner shell 51 can be by the metal (such as aluminum, rustless steel and 5-9% nickel steel) with good low temperature properties Make.As in this embodiment, inner shell 51 can be shaped as cast.Inner shell 51 can also have difformity, comprises polyhedron.

Shell 52 seals the outside of inner shell 51, thus forms space between shell 52 and inner shell 51.Shell 52 is by can The intrinsic pressure steel withstanding inner shell 51 is made.Shell 52 is shared and is put on the intrinsic pressure of inner shell 51.Therefore, it can reduce inner shell 51 institute Quantity of material, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 50.

Owing to the interface channel that will be described below, the pressure of inner shell 51 is by equal or similar to thermal insulation layer parts 53 Pressure.Therefore, shell 52 can withstand the pressure of pressurized liquefied natural gas.Even if inner shell 51 be manufactured into can withstand- The temperature of 120 DEG C Dao-95 DEG C, it is also possible to store with inner shell 51 and shell 52 and there is pressure above (13 to 25 bar) and temperature strip The pressurized liquefied natural gas of part (such as 17 bar pressures and-115 DEG C of temperature).Store container 50 can be designed to shell 52 with The state that thermal insulation layer parts 53 fit together meets pressure above and temperature conditions.

Meanwhile, inner shell 51 can be manufactured with the thickness t1 of the thickness t2 less than shell 52.Therefore, when manufacturing inner shell When 51, it is possible to reduce there is the use of the expensive metal of good low temperature properties.

Thermal insulation layer parts 53 are mounted in the space between inner shell 51 and shell 52, and are made up to subtract of heat-barrier material Few heat transfer.Additionally, the construction of thermal insulation layer parts 53 or manufacture material should make the pressure putting on it be equal to the interior of inner shell 51 Pressure.The most equal pressure is not referred to equal to the intrinsic pressure pressure of inner shell 51, but a kind of approximate pressure.

Thermal insulation layer parts 53 can be linked together by interface channel 54 with the inside of inner shell 51, in order at inner shell 51 Pressure balance is reached between inside and outside.Outside (shell when the inside Yu inner shell 51 being made inner shell 51 by interface channel 54 The inside of 52) between pressure reach balance time, shell 52 by support a large portion pressure, thus make the thickness of inner shell 51 Degree reduces.

As shown in Figure 12, can contact in the connection member 55 being arranged at the inlet/outlet 51a of inner shell 51 heat insulation Interface channel 54 is formed at the side of layer parts 53.Therefore, inner shell 51 intrinsic pressure via interface channel 54 towards thermal insulation layer parts 53 move, and thus make the pressure between inside and the outside of inner shell 51 reach balance.

As shown in Figure 13, the thickness of the thermal insulation layer parts 53 installed can make by the metal system with good low temperature properties Heat transfer between the inner shell 51 and the shell 52 being made up of the steel with superior strength that become reduces and maintains suitable evaporation rate (boil off rate, BOR).Installation owing to thermal insulation layer parts 53 so that pressurized liquefied natural gas and liquid can be stored Change natural gas.Owing to reaching pressure balance between inside and the outside of inner shell 51 so that the thickness t1 of inner shell 51 reduces.Therefore, The use of the expensive metal with good low temperature properties can be reduced.Further, it is also possible to prevent by inner shell 51 is intrinsic pressure caused Fault of construction, and the storage container 50 of excellent durability can be provided.

Meanwhile, connection member 55 can be integrally attached to the inlet/outlet 51a of inner shell 51 to be supplied by liquefied natural gas Inner shell 51 should be arrived and discharge from inner shell 51.Therefore, connection member 55 can be prominent to the outside of shell 51.Can be by such as valve It is connected to connection member 55 Deng external member.

As shown in Figure 14, according to the liquefied natural gas (LNG) storage vessel of second embodiment of the invention can comprise outside every Thermosphere 56, it is installed on the outside of shell 52 for heat insulation.Outer insulative layer 56 can attach to shell 52, and thus it will Seal the outside of shell 52.Outer insulative layer 56 can also keep sealing shell 52 by its molding or the shape shaped.By This prevents from outside heat transfer.Therefore, under hot environment (such as torrid areas), by storing the liquefaction stored in container The BOG that natural gas or pressurized liquefied natural gas produce reduces.

As shown in Figure 15, heating can be comprised according to the liquefied natural gas (LNG) storage vessel of third embodiment of the invention Component 57, it is installed on the outside of shell 52.Heater 57 can be thermal medium pipeloop, and it passes through circulation-supplied Thermal medium applies heat to shell 52.Heater 57 can comprise heater, and it is by by attaching to storage container 50 The electric power that accumulator, capacitor or power supply unit are supplied produces heat.As in case of the present embodiment, heater 57 is permissible Comprise flexible template heating element heater or be wrapped in the heating wire of shell 52 external surface peripheral.

Therefore, under low temperature environment (such as arctic regions), store the liquefied natural gas or pressurized liquefied stored in container Natural gas is not affected by cool exterior air.Thus, shell 52 can be made up of general steel plate, so that its manufacturing cost reduces.

Figure 16 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to four embodiment of the invention.In Figure 16 Shown in, inner shell 61, shell 62, supporter can be comprised according to the liquefied natural gas (LNG) storage vessel 60 of four embodiment of the invention 63 and thermal insulation layer parts 64.Inner shell 61 is by LNG storage in inside, and shell 62 seals the outside of inner shell 61.Support Body 63 is arranged between inner shell 61 and shell 62, and supports inner shell 61 and shell 62.Thermal insulation layer parts 64 make heat transfer reduce.With Time, connection member (not shown) can be integrally attached to the inlet/outlet of inner shell 61 to be fed to by liquefied natural gas interior Shell 61 and discharging from inner shell 61.Therefore, connection member can be prominent to the outside of shell 62.Can be by outside structures such as such as valves Part is connected to connection member.

Inner shell 61 forms LNG storage space.Inner shell 61 can be by the gold of the low temperature that can withstand liquefied natural gas Genus is made.For example, inner shell 61 can be by the metal (such as aluminum, rustless steel and 5-9% nickel steel) with good low temperature properties Make.As in this embodiment, inner shell 61 can be shaped as cast.Inner shell 61 can also have difformity, comprises polyhedron.

Shell 62 seals the outside of inner shell 61, thus forms space between shell 62 and inner shell 61.Shell 62 is by can The intrinsic pressure steel withstanding inner shell 61 is made.Shell 62 is shared and is put on the intrinsic pressure of inner shell 61.Therefore, it can reduce inner shell 61 institute Quantity of material, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 60.

Owing to interface channel, the pressure of inner shell 61 is by the pressure equal or similar to thermal insulation layer parts 64.Therefore, shell 62 pressure that can withstand pressurized liquefied natural gas.Even if inner shell 61 is manufactured into the temperature that can withstand-120 DEG C to-95 DEG C Degree, it is also possible to store with inner shell 61 and shell 62 and there are pressure above (13 bars are to 25 bars) and temperature conditions (such as 17 bar pressures Power and-115 DEG C of temperature) pressurized liquefied natural gas.Store container 60 can be designed to shell 62, supporter 63 with heat insulation The state that layer parts 64 fit together meets pressure above and temperature conditions.

Supporter 63 is arranged in the space between inner shell 61 and shell 62, in order to support inner shell 61 and shell 62.Support Body 63 structurally strengthens inner shell 61 and shell 62.Supporter 63 can be by the metal of the low temperature that can withstand liquefied natural gas (such as, low-temperature steel) is made.As shown in Figure 17, along the lateral circumference of inner shell 61 and shell 62, single supporter can be installed 63, or multiple supporter 63 can be installed on the side of inner shell 61 and shell 62, make these supporters in vertical direction (as in the situation of the present embodiment) spaced apart.

As shown in Figure 18, supporter 63 can comprise the first flange (flange) 63a, the second flange 63b and the first abdomen Plate (web) 63c.First flange 63a and the second flange 63b is supported on the outer surface of inner shell 61 and the inner surface of shell 62. First web 63c is arranged between the first flange 63a and the second flange 63b.First flange 63a and the second flange 63b can be in Annular, or the bent member formed by annular is divided into some can be comprised.

Additionally, supporter 63 can be by being fixed on the inner surface of the outer surface and shell 62 that are welded on inner shell 61 Ground supports, it is not necessary to use the individual members such as such as flange.In such a case, it is possible to glass fibre is inserted in supporter 63, To prevent heat to be delivered to outside via supporter 63.

First web 63c can be multiple grid (grating), and the first flange 63a and the second flange are fixed in its two ends 63b.Some grids can through the fixing compression stress to receive and be applied between the first flange 63a and the second flange 63b, and its Its grid can be through fixing to form truss structure.The shape of these grids and fixed position can be altered or modified.This point The first web 63c can be equally applicable to by being welded in the situation carrying out being fixedly supported on inner shell 61 and shell 62.

Heat insulating component 65 can be installed between the inner surface of shell 62 and the second flange 63b, in order to stop heat transfer.Every Hot component 65 can comprise glass fibre (glass fiber), and prevents the temperature of inner shell 61 to be delivered to by supporter 63 Shell 62.

Additionally, in the case of supporter 63 is supported by welding with being fixed, can be by heat insulating component 65 (such as glass Glass fiber) it is placed in supporter 63 and contacts the end of shell 62, and by being welded and fixed.Or, can be by independent heat insulation Component is placed between the outside of supporter 63 and the inside of shell 62.In this way, it is possible to prevent the temperature of inner shell 61 from leading to Cross supporter 63 and be delivered to shell 62.

Liquefied natural gas (LNG) storage vessel 60 according to the present invention can additionally comprise lower support body 66, and it is arranged on inner shell In lower space between 61 and shell 62, in order to support inner shell 61 and shell 62.It is convex that lower support body 66 can comprise the 3rd Edge, the 4th flange and the second web.Third lip and the 4th flange are supported on the outer surface of inner shell 61 and the interior table of shell 62 On face.Second web is arranged between third lip and the 4th flange.Second web can comprise multiple grid, and its two ends are consolidated Due to third lip and the 4th flange.The concrete shape of these assemblies is different only according to installation site, and lower support These assemblies of body are substantially the same with the assembly of supporter 63.Furthermore, it is possible to the inner surface of shell 62 and the 4th flange it Between install heat insulating component (not shown), in order to stop heat transfer.Heat insulating component can be glass fibre.

Thermal insulation layer parts 64 are mounted in the space between inner shell 61 and shell 62, and are made up to subtract of heat-barrier material Few heat transfer.Additionally, the construction of thermal insulation layer parts 64 or manufacture material should make the pressure putting on it be equal to the interior of inner shell 61 Pressure.The most equal pressure is not referred to equal to the intrinsic pressure pressure of inner shell 61, but a kind of approximate pressure.Additionally, existed with previous In embodiment shown in Figure 12 similar, the inside of thermal insulation layer parts 64 and inner shell 61 can be by interface channel (in Figure 12 54) link together, in order between the inside and outside of inner shell 61, reach pressure balance.Due in previous embodiment Describe interface channel 54 in detail, therefore it further illustrates and will omit.

Additionally, thermal insulation layer parts 64 can be made by granular pattern (Grain) isolated material (such as perlite (perlite)) Becoming, these isolated materials can pass supporter 63, specifically, have the web 63c of cell structure.Therefore, granular pattern every Thermosphere parts 64 can the most uniformly mix and fill.Owing to being formed without gap between inner shell 61 and shell 62, thus permissible Improve heat-proof quality.

It addition, after Tian Chonging, the granule of thermal insulation layer parts 64 is propped up by supporter 63 and the bottom with grill support structure Support body 66 moves freely through, and is therefore prevented from the inhomogeneities of thermal insulation layer parts 64.

As shown in Figure 19, the liquefied natural gas (LNG) storage vessel 70 according to fifth embodiment of the invention can be in laterally side Upwards install.In such a case, it is possible to the lower support body (in Figure 16 66) in omission preceding embodiment.

Figure 20 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to sixth embodiment of the invention.

As shown in Figure 20, inner shell can be comprised according to the liquefied natural gas (LNG) storage vessel 80 of sixth embodiment of the invention 81, shell 82 and thermal insulation layer parts 84.Inner shell 81 is by LNG storage in inside, and shell 82 seals outside inner shell 81 Portion.Thermal insulation layer parts 84 make the heat transfer between inner shell 81 and shell 82 reduce.The outer surface of inner shell 81 and the interior table of shell 82 Face links together by metal-cored 83.Meanwhile, connection member (not shown) can be integrally attached to the entrance of inner shell 81/go out Mouth to be fed to inner shell 81 and discharging from inner shell 81 by liquefied natural gas.Therefore, connection member can be outside shell 82 Portion highlights.The external members such as such as valve can be connected to connection member.

Inner shell 81 forms LNG storage space.Inner shell 81 can be by the gold of the low temperature that can withstand liquefied natural gas Genus is made.For example, inner shell 81 can be by the metal (such as aluminum, rustless steel and 5-9% nickel steel) with good low temperature properties Make.As in this embodiment, inner shell 81 can be shaped as cast.Inner shell 81 can also have difformity, comprises polyhedron.

Shell 82 seals the outside of inner shell 81, thus forms space between shell 82 and inner shell 81.Shell 82 is by can The intrinsic pressure steel withstanding inner shell 81 is made.Shell 82 is shared and is put on the intrinsic pressure of inner shell 81.Therefore, it can reduce inner shell 81 institute Quantity of material, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 80.

Owing to interface channel, the pressure of inner shell 81 is by the pressure equal or similar to thermal insulation layer parts 84.Therefore, shell 82 pressure that can withstand pressurized liquefied natural gas.Even if inner shell 81 is manufactured into the temperature that can withstand-120 DEG C to-95 DEG C Degree, it is also possible to store with inner shell 81 and shell 82 and there are pressure above (13 bars are to 25 bars) and temperature conditions (such as 17 bar pressures Power and-115 DEG C of temperature) pressurized liquefied natural gas.Store container 80 can be designed to shell 82, metal-cored 83 with heat insulation The state that layer parts 84 fit together meets pressure above and temperature conditions.

Metal-cored 83 outer surfaces that may be coupled to inner shell 81 and the inner surface of shell 82, thus make inner shell 81 and shell 82 Mutually support.Metal-cored 83 can be installed along the lateral circumference of inner shell 81 and shell 82, or can be at inner shell 81 and shell 82 Side on multiple supporter 63 is installed, make these supporters the most spaced apart (such as the situation at the present embodiment In).Additionally, metal-cored 83 can be a kind of tinsel (wire), such as steel wire.For example, can connect metal-cored 83 The multiple annuluss provided on the inner surface of the outer surface of inner shell 81 and shell 82.Metal-cored 83 can link or be welded in On multiple strong point 83a.Metal-cored 83 can also be connected to inner shell 81 and shell 82 by distinct methods.

As shown in Figure 21 (a) and Figure 21 (b), can be by shell 82 strong point 83a be repeatedly connected to Two adjacent supports point 83a, and a strong point 83a of shell 82 is repeatedly connected to two adjacent supports of inner shell 81 Point 83a, installs metal-cored 83.Metal-cored 83 can be along the circumference toothing of inner shell 81 and shell 82.Such as Fig. 8 (a) Shown in Fig. 8 (b), the connection number of times of metal-cored 83 and the number of metal-cored 83 can change.

Liquefied natural gas (LNG) storage vessel 80 according to the present invention can additionally comprise lower support body 86, and it is arranged on inner shell In lower space between 81 and shell 82, in order to support inner shell 81 and shell 82.Lower support body 86 can comprise flange and Web.These flanges are supported on the outer surface of inner shell 81 and the inner surface of shell 82.Web is arranged between each flange.Abdomen Plate can comprise multiple grid, and flange is fixed at its two ends.Due to these assemblies and the liquid according to fifth embodiment of the invention The lower support body 66 changing natural gas storage vessel 60 is substantially the same, therefore it describes in detail and will omit.

Thermal insulation layer parts 84 are mounted in the space between inner shell 81 and shell 82, and are made up to subtract of heat-barrier material Few heat transfer.Additionally, the construction of thermal insulation layer parts 84 or manufacture material should make the pressure putting on it be equal to the interior of inner shell 81 Pressure.The most equal pressure is not referred to equal to the intrinsic pressure pressure of inner shell 81, but a kind of approximate pressure.With previously the most in fig. 12 In shown embodiment similar, thermal insulation layer parts 84 and inner shell 81 can pass through interface channel (in Figure 12 54) and be connected to one Rise, in order between the inside and outside of inner shell 81, reach pressure balance.Owing to being described in detail in previous embodiment Interface channel 54, therefore it further illustrates and will omit.

Thermal insulation layer parts 84 can be made up of granular pattern (Grain) isolated material, and this material can be through metal-cored 83. Therefore, granular pattern thermal insulation layer parts 84 can the most uniformly mix and fill.Owing to not having between inner shell 81 and shell 82 Form gap, therefore be possible to prevent the inhomogeneities of thermal insulation layer parts 84, and heat-proof quality can be improved.

As shown in Figure 22, can install in a lateral direction according to the liquefied natural gas (LNG) storage vessel 90 of the present invention.? In this case, it is convenient to omit lower support body (in Figure 20 86)

Figure 23 is the configuration figure illustrating the liquefied natural gas (LNG) storage vessel according to eighth embodiment of the invention.

As shown in Figure 23, in can comprising according to the liquefied natural gas (LNG) storage vessel 510 of eighth embodiment of the invention Shell 511 and shell 512.Inner shell 511 is by LNG storage in inside, and shell 512 seals the outside of inner shell 512.In Space between inner space and inner shell 511 and the shell 512 of shell 511 is linked together by balance pipeline 514.Additionally, Thermal insulation layer parts 513 may be mounted between inner shell 511 and shell 512.

Inner shell 511 forms LNG storage space.Inner shell 511 can be by the low temperature that can withstand liquefied natural gas Metal is made.For example, inner shell 511 can be by metal (the such as aluminum, rustless steel and 5-9% nickel with good low temperature properties Steel) make.As in this embodiment, inner shell 511 can be shaped as cast.Inner shell 511 can also have difformity, comprises many Face body.

Owing to interface channel, the pressure of inner shell 511 is by the pressure equal or similar to thermal insulation layer parts 513.Therefore, outward Shell 512 can withstand the pressure of pressurized liquefied natural gas.Even if inner shell 511 is manufactured into can withstand-120 DEG C to-95 DEG C Temperature, it is also possible to store with inner shell 511 and shell 512 and there is pressure above (13 bars are to 25 bars) and temperature conditions is (such as 17 bar pressures and-115 DEG C of temperature) pressurized liquefied natural gas.Store container 510 can be designed to shell 512 with heat insulation The state that layer parts 513 fit together meets pressure above and temperature conditions.

First exhaust pipeline 515 may be coupled to the inner space, upper strata of inner shell 511 and reaches outside.First row air valve 515a is installed in first exhaust pipeline 515 to open/closed gas flow.Therefore, first exhaust pipeline 515 can be by opening The gas of inner shell 511 inner space is discharged to outside by first row air valve 515a.

Additionally, the upper strata that the first connection member 516a and the second connection member 516b may be coupled to inner shell 511 is internal empty Between and lower interior part space, through shell, and reach outside.Therefore, it can via the dress being connected to the first connection member 516a Liquefied natural gas is loaded in the inside of inner shell 511 by material pipeline 7, and can be via being connected to the second connection member 516b Discharging pipeline 8 unloads liquefied natural gas from the inside of inner shell 511.Meanwhile, valve 7a and 8b can be separately mounted to pipeline 7 He that feeds In discharging pipeline 8.

Shell 512 seals the outside of inner shell 511, thus forms space between shell 512 and inner shell 511.Shell 512 is It is made up of the intrinsic pressure steel that can withstand inner shell 511.Shell 512 is shared and is put on the intrinsic pressure of inner shell 511.Therefore, it can reduce Quantity of material used by inner shell 511, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 510.

Meanwhile, inner shell 511 can be configured with the thickness of the thickness less than shell 512.Therefore, when manufacturing storage container When 510, it is possible to reduce there is the use of the expensive metal of good low temperature properties.

Thermal insulation layer parts 513 are mounted in the space between inner shell 511 and shell 512, and are made up of heat-barrier material To reduce heat transfer.Additionally, the construction of thermal insulation layer parts 513 or manufacture material should make the pressure putting on it equal to inner shell 511 intrinsic pressure.

Balance pipeline (Equalizing line) 514 connects the inner space of inner shell 511 and inner shell 511 and shell 512 Between space.Therefore, the inner space of inner shell 511 links together with space outerpace.Thus make the intrinsic pressure of inner shell 511 with The difference between pressure between inner shell 511 and shell 512 is minimized, thus realizes pressure balance.By making inner shell 511 Pressure differential between inside and outside is minimized so that forces at the pressure on inner shell 511 and reduces.It is thereby possible to reduce it is interior The thickness of shell 511, and the use of the expensive metal with good low temperature properties can be reduced.It is also prevented from by inner shell 511 Intrinsic pressure caused fault of construction, and the storage container 510 of excellent durability can be provided.

Supporter 517 may be mounted in the space between inner shell 511 and shell 512, in order to supports inner shell 511 and shell 512.Supporter 517 structurally strengthens inner shell 511 and shell 512.Supporter 517 can be by withstanding liquefied natural gas The metal of low temperature is made.Can along inner shell 511 and shell 512 lateral circumference install single supporter 517, or can including Multiple supporter 517 is installed on the side of shell 511 and shell 512, make these supporters the most spaced apart (as In the situation of the present embodiment).

Furthermore, it is possible to lower space between inner shell 511 and shell 512 is installed lower support body 518, in order to support Inner shell 511 and shell 512.

Similar to the supporter 63 shown in Figure 18, supporter 517 and lower support body 518 can comprise flange and abdomen Plate.These flanges are supported on the outer surface of inner shell 511 and the inner surface of shell 512.Web is arranged between each flange.Abdomen Plate can comprise multiple grid, and flange is fixed at its two ends.Heat insulating component (such as glass fibre) may be mounted at shell 512 with Between flange, in order to stop heat transfer.Additionally, metal-cored 83 similar, in supporter 517 may be coupled to shown in Figure 20 The outer surface of shell 511 and the inner surface of shell 512, thus make inner shell 511 mutually support with shell 512.

As shown in Figure 24, ON/OFF can be comprised according to the liquefied natural gas (LNG) storage vessel of ninth embodiment of the invention Valve 514a, be used for opening/closing liquid (such as natural gas or boil-off gas) is to the flowing of balance pipeline 514.Therefore, it can root According to storing container position or the change of pose, liquid is stoped to flow through balance pipeline 514 by close/open valve 514a.

As shown in Figure 25, second row can be comprised according to the liquefied natural gas (LNG) storage vessel of tenth embodiment of the invention Gas pipeline 514c, it is connected to balance pipeline 514.Second row air valve 514b can be installed in second exhaust pipeline 514c.Cause This, can be by opening second row air valve 514b, by the gas within inner shell 511 via balance pipeline 514 and second exhaust pipe Line 514c is discharged to outside.Thus, it is possible to avoid the complicated technology for exhaust line being connected to inner shell 511.Furthermore it is possible to Maintain structural stability, and exhaust line can be easily installed.

Figure 26 is the sectional view illustrating the liquefied natural gas (LNG) storage vessel according to eleventh embodiment of the invention.

As shown in Figure 26, can comprise according to the liquefied natural gas (LNG) storage vessel 100 of eleventh embodiment of the invention Inner shell 110, shell 120 and thermal insulation layer parts 130.Inner shell 110 can be by the metal system of the low temperature that can withstand liquefied natural gas Become.Shell 120 can seal the outside of inner shell 110.Thermal insulation layer parts 130 may be mounted between inner shell 110 and shell 120 with Just heat transfer is reduced.Connection member 140 can be arranged at inner shell 110 and shell 120.Connection member 140 can comprise first Flange 142 and the second flange 144.The first flange 142 provided is protruding from inner shell 110 at injection member 141 with valve 4 with it End contact state formed flange connect.The second flange 144 provided is stretched from shell 120 at extension component 143 with valve 4 The end gone out forms flange and connects, thus sealing injection parts 141.

Inner shell 110 forms LNG storage space.Inner shell 110 can be by the low temperature that can withstand liquefied natural gas Metal is made.For example, inner shell 110 can be by metal (the such as aluminum, rustless steel and 5-9% nickel with good low temperature properties Steel) make.As in this embodiment, inner shell 110 can be shaped as cast.Inner shell 110 can also have difformity, comprises many Face body.

Shell 120 seals the outside of inner shell 110, thus forms space between shell 120 and inner shell 110.Shell 120 is It is made up of the intrinsic pressure steel that can withstand inner shell 110.Shell 120 is shared and is put on the intrinsic pressure of inner shell 110.Therefore, it can reduce Quantity of material used by inner shell 110, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 100.

Owing to interface channel, the pressure of inner shell 110 is by the pressure equal or similar to thermal insulation layer parts 130.Therefore, outward Shell 120 can withstand the pressure of pressurized liquefied natural gas.Even if inner shell 110 is manufactured into can withstand-120 DEG C to-95 DEG C Temperature, it is also possible to store with inner shell 110 and shell 120 and there is pressure above (13 bars are to 25 bars) and temperature conditions is (such as 17 bar pressures and-115 DEG C of temperature) pressurized liquefied natural gas.Store container 100 can be designed to shell 120 with heat insulation The state that layer parts 130 fit together meets pressure above and temperature conditions.

Meanwhile, inner shell 110 can be manufactured with the thickness of the thickness less than shell 120.Therefore, when manufacturing inner shell When 110, it is possible to reduce there is the use of the expensive metal of good low temperature properties.

Thermal insulation layer parts 130 are mounted in the space between inner shell 110 and shell 120, and are made up of heat-barrier material To reduce heat transfer.Additionally, the construction of thermal insulation layer parts 130 or manufacture material should make the pressure putting on it equal to inner shell 110 intrinsic pressure.The most equal pressure is not referred to equal to the intrinsic pressure pressure of inner shell 110, but a kind of approximate pressure.

Thermal insulation layer parts 130 and the inside of inner shell 110 can be passed through interface channel (not shown) and link together, in order to Pressure balance is reached between inside and the outside of inner shell 110.Interface channel can comprise the different embodiments being provided that passage, example Such as hole or pipe.For example, the hole that interface channel is formed in may be embodied in the injection member 141 of connection member 140.Work as inner shell 110 intrinsic pressure via interface channel when thermal insulation layer parts 130 move, the intrinsic pressure and thermal insulation layer parts 130 of inner shell 110 intrinsic pressure Reach balance.

When the first flange 142 directly contacts valve 4, connection member 140 is to carry out flange by bolt 181 and nut 182 Connecting, thus injection member 141 is connected to the passage of valve 4.Owing to injection member 141 the most directly contacts with the first flange 142 Liquefied natural gas, therefore connection member 140 can be made up of the material identical with inner shell 110.For example, connection member 140 can To be made up of the metal (such as aluminum, rustless steel or 5-9% nickel steel) with good low temperature properties.

Additionally, as in this embodiment, connection member 140 can be with the outside of sealing injection parts 141, interval point simultaneously Open.Second flange 144 can be carried out flange with valve 4 be connected by bolt 181 and nut 182, and the first flange 142 inserts it simultaneously Between.Extension component 143 and the second flange 144 can be formed from steel.

As shown in Figure 27, owing to the first flange 152 is tightened with injection member 151, therefore connection member 150 can be with injection Parts 151 form one.

As shown in Figure 28 (a) and Figure 28 (b), connection member 160 can pass through coupling member 163 (such as bolt or spiral shell Nail) the first flange 162 is fixed on injection member 161.Coupling member 163 can through the first flange 162 and circumferentially side To the connecting member 163a being attached in a large number in the formation of injection member 161 end.

As shown in Figure 28 (a), in the case of using bolt as coupling member 163, connecting member 163a and first Flange 162 is female connection, and the first flange 162 is by the bolt of independent band pin thread even with injection member 161a Knot.Now, in order to avoid disturbing adjacent component, the head of the bolt of band pin thread can be processed, so that bolt head It is received in the first flange 162.

If bolt head is configured to from the first flange 162 outwardly (as shown in Figure 28 (a) and Figure 28 (b)), then Then valve 4 can be attached to the first flange 162 by valve 4 being processed into the bolt head shape that can receive bolt head, keeps away Exempt from the interference between bolt head and adjacent members.

As shown in Figure 29, connection member 170 can pass through bolt 181 and nut 182 so that the second flange 174 is positioned The edge of the first flange 172 state being connected with valve 4 form flange and connect.In this case, the first flange 172 is permissible Only it is connected to valve 4 by bolt 183.

Figure 30 is the putting of critical piece illustrating the liquefied natural gas (LNG) storage vessel according to twelveth embodiment of the invention Big figure.

As shown in Figure 30, can comprise according to the liquefied natural gas (LNG) storage vessel 520 of twelveth embodiment of the invention Inner shell 521, shell 522, connection member 524, buffer unit 525 and thermal insulation layer parts 523.Liquefied natural gas is stored up by inner shell 521 Exist internal, and shell 522 seals the outside of inner shell 521.Connection member 522 be connected to External infusion parts 9a and towards every Thermosphere parts 523 highlight.Buffer unit 524 provides buffering for the thermal contraction between connection member 524 and inner shell 521.Thermal insulation layer Parts 523 are arranged in the space between inner shell 521 and shell 522.

Inner shell 521 forms LNG storage space.Inner shell 521 can be by the low temperature that can withstand liquefied natural gas Metal is made.For example, inner shell 521 can be by metal (the such as aluminum, rustless steel and 5-9% nickel with good low temperature properties Steel) make.As in this embodiment, inner shell 521 can be shaped as cast.Inner shell 521 can also have difformity, comprises many Face body.

Shell 522 seals the outside of inner shell 521, thus forms space between shell 522 and inner shell 521.Shell 522 is It is made up of the intrinsic pressure steel that can withstand inner shell 521.Shell 522 is shared and is put on the intrinsic pressure of inner shell 521.Therefore, it can reduce Quantity of material used by inner shell 521, thus reduce the manufacturing cost of liquefied natural gas (LNG) storage vessel 520.

Owing to interface channel, the pressure of inner shell 521 is by the pressure equal or similar to thermal insulation layer parts 523.Therefore, outward Shell 522 can withstand the pressure of pressurized liquefied natural gas.Even if inner shell 521 is manufactured into can withstand-120 DEG C to-95 DEG C Temperature, it is also possible to store with inner shell 521 and shell 522 and there is pressure above (13 bars are to 25 bars) and temperature conditions is (such as 17 bar pressures and-115 DEG C of temperature) pressurized liquefied natural gas.Store container 520 can be designed to shell 522 with heat insulation The state that layer parts 523 fit together meets pressure above and temperature conditions.

Meanwhile, inner shell 521 can be configured with the thickness of the thickness less than shell 522.Therefore, when manufacturing storage container When 520, it is possible to reduce there is the use of the expensive metal of good low temperature properties.

Thermal insulation layer parts 523 are mounted in the space between inner shell 521 and shell 522, and are made up of heat-barrier material To reduce heat transfer.Additionally, the construction of thermal insulation layer parts 523 or manufacture material should make the pressure putting on it equal to inner shell 521 intrinsic pressure.

Connection member 524 is configured to highlight from inner shell 521.Connection member 524 may be coupled to injection port 521a and to Outer prominent, liquefied natural gas is to be injected in inner shell 521 by injection port 521a.Connection member 524 may be coupled to External infusion Parts 9a is to inject liquefied natural gas in inner shell 521.Connection member 524 can be connected to inner shell via buffer unit 525 521.In this case, shell 522 can comprise extension component 522a, and it is arranged at side and sealed connection part 524.For example, one end of extension component 522a can be connected to External infusion parts 9a together with connection member 524.

Buffer unit 525 is arranged between inner shell 521 and connection member 524, in order to provide buffering to thermal contraction.Buffering Thermal contraction caused by the parts 525 heat to being produced by inner shell 521 provides buffering, thus prevents load concentration in connection member On 524.

Additionally, as the most in this embodiment, it is provided that buffer unit 525 can form joint component (joint in tubular Part) 525b, its two ends are connected to injection port 521a and connection member 524 by bamp joint or the like.It addition, buffering is single Unit 525 can be integrally formed between inner shell 521 and connection member 524.

As shown in Figure 31, buffer unit 525 can have loop (loop) 525a.As in this embodiment, buffer part Part 525 can have single loop 525a, and its flat shape is polygon, such as tetragon.

As shown in Figure 32 (a), buffer unit 526 can have the single loop 526a that flat shape is rounded.Such as figure Shown in 32 (b), buffer unit 527 can be in the coil shape with multiple loop 527a.Described coil can assume diamond in shape, its Width is gradually reduced from center to its two ends.Therefore, loop 526a and 527a can reduce by caused by inner shell 521 thermal contraction Impact.

Figure 33 is to illustrate the liquefied natural gas according to the present invention to manufacture the configuration figure of device.

In the liquefied natural gas according to the present invention manufactures device 200, heat exchanger 230 is mounted in from dehydration natural In multiple first take-off lines 221 that gas supply line 220 separates.Heat exchanger 230 is by using by coolant feeding unit The coolant of 210 supplies cools down the dehydrated natural gas via the first take-off line 221 supply.Recirculation unit 240 is supplied again Circulating liquid, replaces natural gas, thus removes the carbon dioxide freezed at heat exchanger 230.

Liquefied natural gas according to the present invention manufactures device 200 and may be used for manufacturing liquefied natural gas and under a predetermined The pressurized liquefied natural gas of pressurization, such as cool down at a temperature of 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C is pressurized liquefied Natural gas.

Coolant feeding unit 210 heat exchanger 230 supply coolant is to carry out heat exchange with natural gas, so that sky So gas liquefies at heat exchanger 230.

Heat exchanger 230 is installed in multiple first take-off lines 221 separated from dehydrated natural gas supply line 220 In, and be connected in parallel.Heat exchanger 230 carries out heat exchange by the coolant supplied with coolant feeding unit 210 The natural gas that cooling is supplied by supply line 220.By making total capacity exceed liquefied natural gas (LNG)-throughput, when manufacturing liquefied natural gas Time, one or more heat exchangers 230 can keep resting state.

Liquefied natural gas (LNG)-throughput in view of whole factory, it may be determined that the number of heat exchanger and capacity.For example, When heat exchanger 230 manages the 20% of total liquefied natural gas (LNG)-throughput, it is provided that 10 heat exchangers.In this case, 5 heat Exchanger can be driven, and other can keep resting state.This configuration can stop what carbon dioxide was freezed by driving Heat exchanger, and the heat exchanger being in resting state during the carbon dioxide that removing is freezed can be driven.Therefore, it can The total liquefied natural gas (LNG)-throughput making whole factory remains constant.

Recirculation unit 240 optionally heat exchanger 230 supplies recycled liquid, replaces natural gas, is used for removing The carbon dioxide freezed.Additionally, recirculation unit 240 can comprise recycled liquid supply part 241, recirculated liquid fluid line 242, the first valve 243 and the second valve 244.Recycled liquid supply part 241 supplies recycled liquid.Recirculation line 242 from Recycled liquid feeding unit 241 stretches out, and is connected to the front-end and back-end of heat exchanger 230 on the first take-off line 221.The One valve 243 is arranged on the front-end and back-end of the position being connected to recycled liquid supply line 242 on the first take-off line 221 Place.Second valve 244 is arranged on the front and rear of heat exchanger 230 on recirculated liquid fluid line 242.

Recycled liquid supply part 241 can use high temperature air as recycled liquid.By using pressure or taking out High temperature air is fed to heat exchanger 230 by suction, and the carbon dioxide freezed can become liquid or gaseous state and be removed.

Liquefied natural gas according to the present invention manufactures device 200 can additionally comprise sensing unit 250 and control unit 260.Sensing unit 250 through install with check at heat exchanger 230 carbon dioxide freeze situation, thus control recirculated liquid The supply of body heat exchanger 230.Control unit 260 receives the sensing signal of self-inductance measurement unit 250, and controls the first valve 243 and second valve 244 and recycled liquid supply part 241.

Control unit 260, according to the sensing signal from sensing unit 250 output, checks the heat friendship occurring carbon dioxide to freeze Parallel operation 230.In order to recycled liquid is fed to heat exchanger 230, it is natural to cut off that control unit 260 closes the first valve 243 The supply of gas heat exchanger 230.Then, control unit 260 drives recycled liquid supply part 241, and opens the second valve 244 to be fed to heat exchanger 230 by recycled liquid.The carbon dioxide freezed at heat exchanger 230 is in recycled liquid The lower liquefaction of effect or vaporization, be removed subsequently.Meanwhile, recycled liquid can be fed to heat exchanger by control unit 260 230, until the counting operation of timer determines reaches the setting time.

As in this embodiment, sensing unit 250 can comprise effusion meter, and it is installed on the first take-off line 221 The rear end of heat exchanger 230, and measure the flow velocity of liquefied natural gas.Therefore, if sensing the flow velocity measured by unit 250 Value is equal to or less than setting value, then may determine that and there occurs freezing of carbon dioxide in corresponding heat exchanger 230.

Additionally, sensing unit 250 can additionally comprise carbon dioxide meter.Carbon dioxide meter is installed in first On take-off line 221, and measure carbonated content in the front and rear gas of heat exchanger 230.As Fruit the front end of heat exchanger 230 with in the gas measured by rear end the difference of carbonated content equal to or more than Set amount, then may determine that and there occurs freezing of carbon dioxide in heat exchanger 230.

Liquefied natural gas according to the present invention manufactures device 200 can additionally comprise the 3rd valve 270, and it is installed in cooling The front and rear of heat exchanger 230 on agent pipeline 211, coolant is supplied from coolant feeding unit 210 by the 3rd valve 270 Heat exchanger 230 should be arrived, thus stop the operation of the heat exchanger 230 occurring carbon dioxide to freeze.3rd valve 270 can pass through Control unit 260 controls.For example, when determining generation carbon dioxide in a certain heat exchanger via sensing unit 260 When freezing, the 3rd valve 270 that control unit 260 is placed in corresponding heat exchanger 230 front and rear by closedown stops The operation of respective heat exchanger 230.

Figure 34 and 35 is side view and the front view illustrating the floating structure according to the present invention respectively, and described floating structure has There is storage tank toter.

As shown in Figure 34 and 35, comprise storage tank toter 310 and buoyancy aid 320 according to the floating structure 300 of the present invention. Described buoyancy aid is through installing with the most floating by buoyancy.Storage tank toter 310 is installed on buoyancy aid 320.Buoyancy aid 320 can To be barge type (barge type) structure or self-propelled ship.

Storage tank toter 310 according to the present invention comprises loading stage 311a and track 312.Loading stage 331a is by lifting Unit 311 carries out raising and lowering.Track 312 is the moving direction setting on loading stage 331a along storage tank 330.Storage tank 330 It is loaded onto in dolly 313.Dolly 313 is installed into and can move along track 312.

Compared with the situation being delivered storage tank by use crane, can reduce in this way and put on storage tank Impact.If additionally, multiple storage tanks are connected, then can be with long-distance transportation lot cargo.Therefore, for cost, it can More more efficient than other means of transportation.Additionally, because this is not a kind of lifting and the method for mobile storage tank, it is possible to more effectively Transport relatively heavy storage tank.

Although through display, storage tank toter 310 is mounted on buoyancy aid 320, but the present invention is not limited to this.Storage tank is transported Carry and put 310 and can fix on the ground, or may be mounted on different conveying arrangements.

Storage tank 330 can store liquefied natural gas or the pressurized liquefied natural gas pressurizeed under a predetermined.Storage tank 330 is also Different goods can be stored.Meanwhile, pressurized liquefied natural gas can be in 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C temperature The natural gas of lower liquefaction.In order to store this pressurized liquefied natural gas, the structure of storage tank 330 and formation material should be enough to withstand Low temperature and high pressure.

Additionally, storage tank 330 can be manufactured into dual structure, thus it can store liquefied natural gas or pressurized liquefied sky So gas.As described above, an interface channel can be provided between the dual structure and the inside of storage tank of storage tank, thus make double The interior pressure balanced of the intrinsic pressure and storage tank 330 of weight structure.

As shown in Figure 36, lifting unit 311 lifts loading stage 311a in vertical direction.For example, lifting unit Loading stage 311a can be raised to above harbour 5 by 311 from buoyancy aid 320.Can install at the one or both sides of loading stage 311a Moveable support 311b.Moveable support 311b is by around the hinged joint portion being placed under Moveable support 311b Part 311c is rotated down and is opened, thus provides the mobile route of dolly 313.

When Moveable support 311b is folded up, it will limit the movement of dolly 313.When loading stage 311a is by rising When fall unit 311 rises to the height identical with harbour 5, Moveable support 311b helps between harbour 5 and loading stage 311a Connection.Therefore, dolly 313 can move to land safely.Further, it is also possible to open up downwards at Moveable support 311b It is connected towards installation Auxiliary Track 311d, Auxiliary Track 311d in upper plane with track 312 when opening.

It addition, lifting unit 311 can use different structures and actuator to lift loading stage 311a.Citing comes Say, loading stage 311 can by be slidably connected to loading stage 311a bottom multiple can the connecting elements of vertical opening, or Person is by being linked to loading stage 311a bottom and can vertically move according to multiple linkage members of direction of rotation vertical opening.Also Can by provide driving force for the motor of rectilinear movement, or by the actuator (such as cylinder) utilizing hydraulic pressure to operate Lifting loading stage 311a.

Track 312 is that the moving direction according to storage tank 330 is arranged on loading stage 311a.Pair of tracks 312 can be set. Track 312 can be arranged in parallel, and thus it has the width identical with the train rail (not shown) being placed on harbour 5.Therefore, Rise to harbour 5 dolly 313 above by lifting unit 311 and can move and be sent to the track of harbour 5 along track 312 On.In this way, it is possible to use the land transport modes such as such as train make dolly 313 move relatively long distance.

Can arrange multiple wheel 313a at the bottom of dolly 313, these wheels can move along track 312.Storage tank 330 are loaded onto on dolly 313.In order to enable to be connected with other dolly, connection can be set at the one or both sides of dolly 313 Parts.Additionally, due to storage tank 330 is installed on dolly 313, therefore the tank that can install steel on the top surface of dolly 313 is protected Backplate 313b, in order to protection storage tank 330 is from corrosion and external impact.

For example, dolly 313 can be connected to winch via hawser and be moved along track 312 by the driving of winch. Dolly 313 oneself can also move along track 312 by transmitting driver element (not shown), and described transmission driver element will rotate Power passes to some or all of wheel 313a.

Figure 37 be illustrate according to the present invention for maintaining pressurized liquefied natural gas to store the joining of system of high pressure of container Put figure.As shown in Figure 37, the system according to the present invention 400 being used for maintaining the high pressure of pressurized liquefied natural gas storage container can To comprise discharging pipeline 410, it is connected to the storage tank 6 of area of consumption by storing container 411, it is possible to carry out pressurized liquefied natural The unloading of gas.System 400 can additionally comprise pressure compensation pipeline 420 and carburator 430, in order to makes via discharging pipeline 410 Some pressurized liquefied natural gas vaporization of unloading, and be fed to the pressurized liquefied natural gas of vaporization store container 411.

Discharging pipeline 410 can carry out pressurized liquefied natural by storage container 411 is connected to the storage tank 6 of area of consumption The unloading of gas.Discharging pipeline 410 can also be only by storing the pressure of the pressurized liquefied natural gas stored in container 411 by pressurization Liquefied natural gas is unloaded in storage tank 6.By discharging pipeline 410 is reached bottom from the top of storage tank 6, can be only by storing Pressurized liquefied natural gas is unloaded in storage tank 6 by the pressure of the pressurized liquefied natural gas stored in container 411.Furthermore it is also possible to The generation making boil-off gas is minimum.

If discharging pipeline 410 being connected to the bottom of storage tank 6 to reduce the evaporation produced during discharging further The amount of gas, then pressurized liquefied natural gas will be tired out from the accumulating at lower part of storage tank 6.In such a case, it is possible to reduce steaming further Get angry the generation of body.But, only by storing the pressure of the pressurized liquefied natural gas stored in container 411, pressure may be not enough So that pressurized liquefied natural gas is stably unloaded in storage tank 6.Therefore, it is necessary to install pump in discharging pipeline 410 extraly.

Pressure compensation pipeline 420 is to separate from discharging pipeline 410, and is connected to store container 411.Carburator 430 is peace It is contained in pressure compensation pipeline 420.Additionally, pressure compensation pipeline 420 may be also connected to store the top of container 411.Work as warp It is fed to store the natural gas contact of container 411 by pressure compensation pipeline 420 and stores store in container 411 pressurized liquefied natural During gas, by the minimum reduction reducing storage container 411 pressure of liquefaction making natural gas.

Carburator 430 makes the pressurized liquefied natural gas vaporization via pressure compensation pipeline 420 supply, and by the pressurization of vaporization Liquefied natural gas is fed to store container 411.Accordingly, because the natural gas via vaporized by carburator 430 is by pressure compensation pipe Line 420 is fed to store container 411 so that reduces during pressurized liquefied natural gas initially unloads stores in container 411 Pressure increases.Therefore, intrinsic pressure bubble point (bubble point) pressure being maintained above liquefied natural gas of container 411 is stored.

For maintaining the system according to the present invention 400 of the high pressure of pressurized liquefied natural gas storage container additionally to wrap Containing boil-off gas pipeline 440 and compressor 450, in order to be collected in area of consumption storage tank the steaming in liquefied natural gas form produced Get angry body.

The installation of boil-off gas pipeline 440 makes the boil-off gas produced by storage tank 6 be supplied to store container 411.Logical Cross the bottom that boil-off gas pipeline 440 is connected to stores container 411, make variations in temperature minimum, and make liquefied natural gas Collection rate increases.

Additionally, compressor 450 is mounted in boil-off gas pipeline 440.Compressor 450 compresses via boil-off gas pipeline The boil-off gas of 440 supplies, and the boil-off gas through overcompression is stored in storage container 411.Therefore, pressurized liquefied natural The boil-off gas produced in storage tank 6 during gas unloading is fed to compressor 450 via boil-off gas pipeline 440, and in pressure Contracting machine 450 pressurizes.Then, the boil-off gas of pressurization is by condensing via the bottom injection storing container 411.By this side Formula, can improve the conevying efficiency of pressurized liquefied natural gas.

Additionally, in the system according to the present invention 400 of the high pressure for maintaining pressurized liquefied natural gas storage container, vapour Changing device 430 can be complimentary to one another with compressor 450.Therefore, if the amount of the boil-off gas produced in storage tank 6 is not enough to maintain Store the pressure of container 411, then the load of carburator 430 will increase.If the amount of boil-off gas is enough, then carburator The load of 430 reduces.

Figure 38 is the configuration figure illustrating the liquefying plant according to thirteenth embodiment of the invention, and described liquefying plant has Discerptible heat exchanger.

As shown in Figure 38, according to the natural gas liquid with discerptible heat exchanger of thirteenth embodiment of the invention Gasifying device 610 lng heat exchanger 620 by stainless steel, carries out heat exchange to make natural gas liquefaction via with coolant, And by coolant heat exchanger 631 and 632, coolant is cooled down, and coolant is fed to lng heat exchanger 620.

Lng heat exchanger 620 is to be supplied with natural gas via liquefaction pipeline 623, and carries out heat via with coolant Exchange makes natural gas liquefaction.To this end, liquefaction pipeline 623 is connected to first passage 621, and coolant pipeloop 638 quilt It is connected to second channel 622.It is each passed through first passage and the natural gas of second channel and coolant carries out heat exchange each other.Liquid The whole part of heat-transformation exchanger 620 can be made of stainless steel；But, the present invention is not limited to this.Lng heat exchanger 620 contacts liquefied natural gas (identical with first passage) or need to withstand some parts of cryogenic temperature or part can be by not Rust steel is made.In liquefaction pipeline 623, the rear end at first passage 621 installs close/open valve 624.

As in this embodiment, coolant heat exchanger 631 and 632 can comprise multiple coolant heat exchanger, such as, First coolant heat exchanger 631 and the second coolant heat exchanger 632.Coolant heat exchanger 631 and 632 can also have Single coolant heat exchanger.The whole part of coolant heat exchanger 631 and 632 can be made of aluminum.Coolant heat is handed over Parallel operation 631 needs some parts of heat transfer or the part can also be made of aluminum with 632 because contacting with coolant.Additionally, it is cold But agent heat exchanger 631 and 632 can be contained in coolant cooling unit 630.

Coolant cooling unit 630 via the first coolant heat exchanger 631 and the second coolant heat exchanger 632 by cold But agent cooling, and the coolant of cooling is fed to lng heat exchanger 620.To this end, such as, from lng heat exchanger 620 row The coolant gone out is compressed by compressor 633 and aftercooler (after-cooler) 634 and is cooled down.Through aftercooler The coolant of 634 is divided into gaseous coolant and liquid coolant by separator 635.Gaseous coolant is supplied by gas line 638a Should be to the first passage 631a of the first coolant heat exchanger 631 and first passage 632a of the second coolant heat exchanger 632. Liquid coolant passes the second channel 631b of the first coolant heat exchanger 631 by liquid line 638b, and along even The 636a effect of the first Joule-Thomson (Joule-Thomson, J-T) valve is lower, expansion becomes low pressure to adapter line 638c.So After, liquid coolant is fed to compressor 633 via the third channel 631c of the first coolant heat exchanger 631, and by pressure Contracting machine 633 compresses.Then, subsequent technique is repeated.

Additionally, cooling unit 630 makes through the second coolant heat exchanger 632 under the 2nd J-T valve 636b effect The pressure coolant of one passage 632a expands and becomes low pressure, and coolant is fed to lng heat exchanger 620.Cooling unit 630 also make to be expanded by the coolant of coolant supply line 637 to become low pressure under the 3rd J-T valve 636c effect, and via The second channel 632b of the second coolant heat exchanger 632 and third channel 631c of the first coolant heat exchanger 631 is to pressure Contracting machine 633 supply coolant.

Aftercooler 634 removes the heat of compression of the coolant compressed by compressor 633, and makes a part of coolant liquefy. Additionally, the first coolant heat exchanger 631 is by carrying out heat with the cryogenic coolant of the expansion supplied via third channel 631c Exchange, the unexpanded high temperature coolant cooling will supplied via first passage 631a and second channel 631b.Second cooling Agent heat exchanger 632, will be via by carrying out heat exchange with the cryogenic coolant of the expansion supplied via second channel 632b The unexpanded high temperature coolant cooling of first passage 632a supply.

Additionally, lng heat exchanger 620 is supplied with via the first heat exchanger 631 and the second heat exchanger 632 and The cryogenic coolant that two J-T valve 636b expand, and make natural gas cooling and liquefaction,

Figure 39 is the configuration figure illustrating the liquefying plant according to fourteenth embodiment of the invention, and described liquefying plant has Discerptible heat exchanger.

As shown in Figure 39, similar to the natural gas liquefaction device 610 according to thirteenth embodiment of the invention, according to this The natural gas liquefaction device 640 with discerptible heat exchanger inventing the 14th embodiment comprises lng heat exchanger 650 and coolant cooling unit 660.Lng heat exchanger 650 is supplied with natural gas, and carries out heat exchange via with coolant Make natural gas liquefaction.Lng heat exchanger 650 is to be made of stainless steel.Coolant cooling unit 660 is by coolant heat exchange Coolant is cooled down by device 661, and the coolant of cooling is fed to lng heat exchanger 650.Coolant heat exchanger 661 be by Aluminum is made.The description of the configuration identical with the natural gas liquefaction device 610 according to thirteenth embodiment of the invention and parts will Omit, and the difference between two liquefaction devices will be in being described below.

Coolant cooling unit 660 by compressor 663 and aftercooler 664 to discharging from lng heat exchanger 650 Coolant is compressed and cools down, and coolant is fed to the first passage 611a of coolant heat exchanger 661.Coolant is cold But unit makes the coolant through coolant heat exchanger 661 first passage 661a expand by decompressor 665, and according to flow The manipulation of distributing valve 666, is fed to coolant lng heat exchanger 650, or leads to via the second of coolant heat exchanger 661 Coolant is fed to compressor 663 by road 661b.As in this embodiment, flow divider valve 666 can be a three-way valve.Stream Amount distributing valve 666 can also is that multiple two-way valve.

Coolant heat exchanger 661 is by carrying out heat friendship with the cryogenic coolant of the expansion supplied via second channel 661a Change, the unexpanded high temperature coolant cooling will supplied via first passage 661a.Additionally, according to flow divider valve 666 Handling, cryogenic coolant is assigned to coolant heat exchanger 661 and lng heat exchanger 650.Lng heat exchanger 650 utilizes Through the cryogenic coolant of coolant heat exchanger 661 and decompressor 665 natural gas cooled down and liquefy.

Figure 40 and 41 is to illustrate the elevational sectional view of the LNG tank carrier according to the present invention and side-looking cuts respectively Face figure.

As shown in Figure 40 and 41, it is for shipping storage according to the liquefied natural gas (LNG) storage vessel carrier 700 of the present invention The boats and ships storing container of liquefied natural gas.Liquefied natural gas (LNG) storage vessel carrier 700 comprises multiple first upper support 730 With the second upper support 740.First upper support 730 and the second upper support 740 be in the width direction with length side To being arranged in hull 710 on the cargo hold 720 provided, and the upper part of cargo hold 720 is divided into multiple opening 721.Insert individual Storage container 791 in other opening 721 is supported by the first supporter 730 and the second supporter 740.

Meanwhile, store container 791 and can store common liquefied natural gas and the liquefaction pressurizeed under a predetermined is natural Gas, such as pressure are 13 bars to 25 bars and temperature is the pressurized liquefied natural gas of-120 DEG C to-95 DEG C.To this end, can install Dual structure or heat insulating component.Store container 791 and can have difformity, the most tubular or cylindrical.

Cargo hold 720 can be arranged in hull 710, and thus its top can be opened.In this case, the ship of container ship Body can serve as hull 710.Therefore, it can reduce and build the time needed for liquefied natural gas (LNG) storage vessel carrier 700 and cost.

As shown in Figure 42, multiple first upper support 730 and the second upper support 740 are in the width direction and length Direction is arranged on cargo hold 720, and the upper part of cargo hold 720 is divided into multiple opening 721.Store container 791 to be perpendicularly inserted In individual apertures 721, and it is supported.It is to say, the first upper support 730 is arranged on along the width of hull 710 On cargo hold 720, the most spaced apart along the length direction of hull 710.Additionally, the second upper support 740 is along the length of hull 710 Degree direction is arranged on cargo hold 720, the most spaced apart along the width of hull 710.Therefore, the first upper support 730 On the top of cargo hold 720, multiple opening 721 is formed both horizontally and vertically with the second upper support 740.First Upper support 730 and the second upper support 740 can be fixed on cargo hold by coupling members such as welding or such as bolts The top of 720.

Additionally, may be mounted at cargo hold 720 and for supporting multiple the bracers 760 of side storing container 791 One upper support 730 and the some parts of the second upper support 740 or the inner surface of whole part.Prop up bracer 760 permissible It is arranged to support the front side of storage container 791 and rear side and left side and right side.Bracer 760 can have curvature and correspond to Store the supporting surface 761 of the curvature of container 791 outer surface, thus stably support and store container 791.

Multiple lower support body 750 can be installed below cargo hold 720.Lower support body 750 supports and is inserted into opening 721 In store container 791 bottom.Lower support body 750 is vertically upward arranged on can be additionally on the bottom of cargo hold 720 Reinforcement members 751 is installed to maintain the gap between lower support body 750.Meanwhile, at each storage container 791, bottom is propped up Support body 750 is paired with reinforcement members 751.Can bottom cargo hold 720 on multipair lower support body 750 and reinforcement members are installed 751, and support the bottom storing container 791.

In the case of container ship, pillar can be used according to the liquefied natural gas (LNG) storage vessel carrier 700 of the present invention (stanchion) or lashing bridge (lashing bridge), without improvement, in order to support and store container 791.In this situation Under, the first upper support 730 and the second upper support 740 can be fixed in pillar and lashing bridge and be supported.

Therefore, if slightly modified to conventional container ship, it is possible to being converted into can container for conveying 791. Container loading part 770 can be additionally set on deck 711, in order to freight container case 792 and storage container 791.

Figure 43 is the configuration figure illustrating the solidified carbon dioxide removing system according to the present invention.

As shown in Figure 43, remove system according to the solidified carbon dioxide of the present invention and can comprise expansion valve 812, solidification two Carbonoxide filter 813 and heating unit 816.Expansion valve 812 makes high-pressure natural gas reduce pressure into low pressure.Solidified carbon dioxide filters Device 813 is mounted in the rear end of expansion valve 812, and filters present in liquefied natural gas the solidified carbon dioxide through freezing. Heating unit 816 makes the solidified carbon dioxide of expansion valve 812 and solidified carbon dioxide filter 813 vaporize.Solidified carbon dioxide It is to be filtered out from liquefied natural gas by solidified carbon dioxide filter 813.With natural gas to expansion valve 812 and solidification two The state that the supply of carbonoxide filter 813 is interrupted, supplies heat from heating unit 816.Therefore, it can make solidified carbon dioxide Recirculation also removes.

Expansion valve 812 is installed in supply line 811, and high-pressure natural gas is to be supplied by supply line 811.Expansion valve 812 by make via supply line 811 supply high-pressure natural gas decompression make high-pressure natural gas liquefy.

Solidified carbon dioxide filter 813 is installed in the rear end of expansion valve 812 in supply line 811.Solidification dioxy Change carbon filter 813 to be filtered by the liquefied natural gas that the solidified carbon dioxide through freezing is supplied from expansion valve 812.To this end, Can be at the internally installed filter element for filtering carbon dioxide solid of solidified carbon dioxide filter 813.

Additionally, in expansion valve 812 and solidified carbon dioxide filter 813, the supply of high-pressure natural gas and low-pressure liquefied The discharge of natural gas is to be opened and closed by the first close/open valve 814 and the second close/open valve 815.To this end, the first close/open valve 814 and second close/open valve 815 be installed in front end and the solidified carbon dioxide filter of expansion valve 812 in supply line 811 The rear end of 813, and open and close natural gas flow.First close/open valve 814 opens and closes high-pressure natural gas to expansion valve The supply of 812, and the second close/open valve 815 open and close from solidified carbon dioxide filter 813 release low-pressure liquefied sky So discharge of gas.

Heating unit 816 supplies heat so that the solidified carbon dioxide vapour of expansion valve 812 and solidified carbon dioxide filter 813 Change.For example, heating unit 816 can comprise recycle heat exchanger 816b and the 4th close/open valve 816c and the 5th open/ Close valve 816d.Recycle heat exchanger 816b is installed in thermal medium pipeline 816a, and thermal medium is via thermal medium pipeline 816a Circulate by carrying out heat exchange with expansion valve 812 and solidified carbon dioxide filter 813.4th close/open valve 816c and the 5th Close/open valve 816d is installed in the front and rear of recycle heat exchanger 816b in thermal medium pipeline 816a.

3rd close/open valve 817 is arranged in exhaust line 817a, by the carbon dioxide of heating unit 816 recirculation via Exhaust line 817a is discharged to outside.

3rd close/open valve 817 is through installing to open and close by the carbon dioxide of heating unit 816 recirculation to exhaustor The discharge of line 817a, described exhaust line 817a is to divide between the first close/open valve 814 and expansion valve 812 from supply line 811 Go out.

Furthermore, it is possible to arrange multiple solidified carbon dioxide according to the present invention to remove system 810.Arrive at the first close/open valve Under the control of the 3rd close/open valve 814,815 and 817 and heating unit 816, some carbon dioxide eliminating equipment 810 perform two The filtration of carbonoxide, and other can perform the recirculation of carbon dioxide.In the present embodiment, two carbon dioxide eliminatings are set Equipment 810.In this case, the two carbon dioxide eliminating equipment 810 can alternately perform carbon dioxide filtration and Recirculation.This operation will be in being described by below with reference to accompanying drawing.

As shown in Figure 44, the solidified carbon dioxide removing system 810 that will focus on according to the present invention is below described. First, if opening the first close/open valve 814 and the second close/open valve 815, via supply line 811, high-pressure natural gas is fed to Expansion valve 812, and make natural gas expansion become low pressure, then natural gas is cooled, and low pressure liquefied natural gas is supplied to Solidified carbon dioxide filter 813.Solidified carbon dioxide included in overcooled liquefied natural gas passes through carbon dioxide Filter 813 filters.If solidified carbon dioxide constantly accumulates in solidified carbon dioxide filter 813, then first open/ Close valve 814 and the second close/open valve 815 by closedown to stop supplying high-pressure natural gas via supply line 811.Then, the 4th open/ Close valve 816c and the 5th close/open valve 816d opens so that thermal medium is recycled to recycle heat exchanger 816b.Therefore, by heat supply To expansion valve 812 and solidified carbon dioxide filter 813, and make solidified carbon dioxide vaporization recirculation.

3rd close/open valve 817 is opened via exhaust line 817a, the carbon dioxide of recirculation is discharged to outside.Thus take off Carbon dioxide except recirculation.

Additionally, arranging in the case of multiple solidified carbon dioxide according to the present invention removes system 810, such as, arrange During two carbon dioxide eliminating equipment 810, the first close/open valve to the 5th close/open valve 814,815,817,816c and 816d Under control, a carbon dioxide eliminating equipment I performs the filtration of solidified carbon dioxide in natural gas, and another II performs contrary Operation.In this way, solidified carbon dioxide is vaporized and carries out recirculation.

Solidified carbon dioxide removing system 810 according to the present invention have employed one in numerous carbon dioxide eliminating methods Kind of low temperature method, this method makes it solidify by being freezed by carbon dioxide, and separates carbon dioxide.Therefore, it is possible to Natural gas liquefaction process combines.In such a case it is not necessary to the technique of the carbonoxide of removing preprocessing, thus reduce equipment. Additionally, when the natural gas of under high pressure supply rapidly is liquefied and it is expanded by expansion valve 812 and reduced pressure into low pressure, two Carbonoxide solidifies, and in this case, passes through mechanical filter, i.e. solidified carbon dioxide filter 813 filters solidification two Carbonoxide.In the case of solidified carbon dioxide constantly accumulates in solidified carbon dioxide filter 813, alternately use solid Change carbon dioxide filter 813 and make carbon dioxide recirculation.

Figure 45 is the sectional view of the attachment structure illustrating the liquefied natural gas (LNG) storage vessel according to the present invention.

As shown in Figure 45, it is configured to connect according to the attachment structure 820 of the liquefied natural gas (LNG) storage vessel of the present invention There are inner shell 831 and the External infusion parts 840 of the liquefied natural gas (LNG) storage vessel of dual structure.Inner shell 831 and External infusion Parts 840 are to be slidably connected.To this end, the parts 821 that are slidably connected can be comprised in attachment structure 820.

The parts 821 that are slidably connected are arranged on the connecting portion office of External infusion parts 840 and inner shell 831.In order to internally Shell 831 or the thermal contraction of shell 832 or thermal expansion provide buffering, can arrange the parts 821 that are slidably connected so that External infusion portion Part 840 can slide along the direction being shifted over because of thermal contraction or thermal expansion with the coupling part of inner shell 831.

, storing in container 830 meanwhile, inner shell 831 by LNG storage in inside, and in shell 832 seals The outside of shell 831.The sky between inner shell 831 and shell 832 is may be mounted at for reducing the thermal insulation layer parts 833 of temperature impact In between.

Inner shell 831 can be made up of the metal of the low temperature that can withstand common liquefied natural gas.For example, inner shell 831 Can be made up of the metal (such as aluminum, rustless steel and 5-9% nickel steel) with good low temperature properties.

Identical with previous embodiment, the shell 832 storing container 830 can be by withstanding the intrinsic pressure of inner shell 831 Steel is made.Shell 832 can be built into and identical pressure puts on inner shell 831 inside and is provided with thermal insulation layer parts 833 Space.For example, the pressure of the intrinsic pressure and thermal insulation layer parts 833 of inner shell 831 can be because connecting inner shell 831 and thermal insulation layer portion The interface channel of part 833 and be equal to each other or similar.

Therefore, the pressure of pressurized liquefied natural gas stored during shell 832 can withstand inner shell 831.Even if inner shell 831 are manufactured into the temperature that can withstand-120 DEG C to-95 DEG C, it is also possible to store with inner shell 831 and shell 832 have above Pressure (13 bars are to 25 bars) and the pressurized liquefied natural gas of temperature conditions (such as 17 bar pressures and-115 DEG C of temperature).

Additionally, store the state that container 830 can be designed to fit together with thermal insulation layer parts 833 with shell 832 Meet pressure above and temperature conditions.

In the parts 821 that are slidably connected, formed for injecting and discharge liquefied natural gas and from injection port 831a Outwardly directed connection member 822 can coordinate with from the prominent connection member 823 of External infusion parts 840 and be slidably connected.

As shown in Figure 46, connection member 822 and connection member 823 are configured to pipe form.Two connection member 822 Hes One in 823 is inserted into and is slidably connected to another；But, the present invention is not limited to this.Connection member 822 and 823 Can be slidably connected by forming its cross sectional shape corresponded to each other.Connection member 822 can have different cross sections from 823 Shape, such as tetragon.

The attachment structure 820 of the liquefied natural gas (LNG) storage vessel according to the present invention can additionally comprise extension component 824, its Stretch out to seal the parts 821 that are slidably connected from shell 832.Therefore, extension component 824 is possible to prevent the impact of external environment condition, this One impact is caused by the outer exposed by the parts 821 that are slidably connected.Additionally, due to the end at extension component 824 is formed convex Edge, therefore extension component 824 can form flange with External infusion parts 840 is connected.Therefore, storing container 830 can be stably It is connected to External infusion parts 840.

Meanwhile, as in this embodiment, the connection member 823 being arranged in External infusion parts 840 can be noted with outside Penetrate parts 840 and form entirety.Different from this situation, connection member 823 can be provided separately with External infusion parts 840, and It is fixed on extension component 824.Now, connection member 823 can form flange and is connected or can be by with External infusion parts 840 Different modes connects.

As shown in Figure 47, in the attachment structure 820 of the liquefied natural gas (LNG) storage vessel according to the present invention, connection member 822 and connection member 823 be slidably moved, even if load concentrates on inner shell 831 and outside note because of thermal contraction or thermal expansion Penetrate on the coupling part between parts 840.Therefore, decrease thermal contraction or thermal expansion, be therefore prevented from load concentration at inner shell 831 With on External infusion parts 840.It is thus possible to prevent the infringement caused by thermal contraction or thermal expansion.

Additionally, store natural gas within container 830 can via the gap (tolerance) of the parts 821 that are slidably connected move on to every Thermosphere parts 833.Therefore, the pressure of thermal insulation layer parts 833 can become equal to or be similar to the pressure of inner shell 831.Such as Figure 23 Shown in 25, this point can obtain and replace balance pipeline to maintain the work of thermal insulation layer parts 833 and inner shell 831 equal pressure With.

Although the present invention has been described in terms of a particular embodiment embodiment, but one of ordinary skill in the art are by aobvious and easy See, in the case of without departing from the spirit and scope of the present invention being defined by the claims, can carry out various change and Amendment.

Claims (4)

1. a liquefied natural gas (LNG) storage vessel carrier, it is characterised in that including:

At least one cargo hold, is arranged on hull, thus its opened upper end；

Multiple first upper support and the second upper support, it is in the width direction and length direction is arranged on described cargo hold It is divided into multiple opening with the upper part by described cargo hold, wherein stores container and there is dual structure and be perpendicularly inserted described opening In and be supported, described storage container liquefies at a temperature of being stored in 13 bars to 25 bar pressures and-120 DEG C to-95 DEG C Pressurized liquefied natural gas, described dual structure includes inner shell and shell；

Multiple lower support body, are installed in below described cargo hold and support the end storing container being inserted in described opening Portion, wherein said multiple lower support body are vertically upward arranged on the bottom of described cargo hold；

Reinforcement members, link the long limit of the described lower support body of adjacent two to maintain between described lower support body between Gap；

Interface channel, is arranged between the described dual structure of described storage container and the inside of described storage container, in order to Described storage container described dual structure intrinsic pressure and described storage container intrinsic pressure between reach pressure balance；And

External infusion parts, are slidably connected with described inner shell.

Liquefied natural gas (LNG) storage vessel carrier the most according to claim 1, it is characterised in that comprise additionally in multiple support Block, it is through being arranged on some of the inner surface of described cargo hold and described first upper support and described second upper support Part or whole part are to support the side of described storage container.

Liquefied natural gas (LNG) storage vessel carrier the most according to claim 2, it is characterised in that described bracer is arranged to Support the front side of described storage container and rear side and left side and right side, and described bracer has curvature corresponding to described storage Deposit the supporting surface of the curvature of container outer surface.

Liquefied natural gas (LNG) storage vessel carrier the most according to claim 1, it is characterised in that container loading stage is arranged to Delivery cabinet case and described storage container.