CN1786549B

CN1786549B - Liquid tank system

Info

Publication number: CN1786549B
Application number: CN2005100690417A
Authority: CN
Inventors: 梁永明; 洪性浩; 尹仁铢; 杨泳哲; 徐兴锡; 金知勋; 吴秉泽; 金映均
Original assignee: Korea Gas Corp
Current assignee: Kc Lng Polytron Technologies Inc
Priority date: 2004-12-08
Filing date: 2005-04-29
Publication date: 2012-04-25
Anticipated expiration: 2025-04-29
Also published as: CN1786550A; CN100453884C; EP1717509A3; EP1669662A3; CN1786549A; KR100499710B1; EP1669662A2; EP1717509A2

Abstract

Disclosed is a liquid container adapted to store liquefied natural gas (LNG). The LNG storage container include a sealing wall directly contacting liquid contained in the tank and a structural wall, which comprises an exterior wall and a interior wall and a dividing wall which last two integrated with the exterior wall by a connecting wall. The container further includes a plurality of connectors mechanically connecting the sealing wall and the structural wall and an intermediate wall structure positioned between the structural wall and the interior wall. The intermediate wall structure is configured to move relative to at least one of the sealing wall and the structural wall.

Description

Liquid tank system

Technical field

The present invention relates to a kind of liquid-container and production method thereof, particularly relate to a kind of liquid tank system.

Background technique

Usually, LNG Liquefied natural gas (LNG) is by a kind of fossil fuel, rock gas, liquefaction and making.A kind of LNG tank is divided into according to the mounting point to be installed or is embedded in a underground sunken tank, and is installed on the shaped traffic device, like automobile and steamer, a mobile storage tank.

Above-mentioned LNG Liquefied natural gas (LNG) is stored at low temperatures, and possibly explode when being shaken.Therefore, stable maintenance impact resistance and the fluid tightness that should construct of this LNG Liquefied natural gas (LNG) storage tank.It is structurally slightly different with the sunken tank that moves hardly to be installed in LNG Liquefied natural gas (LNG) storage tank that moves on automobile or the steamer, need provide a kind of and overcomes by the method that moves the mechanical stress that causes because move LNG Liquefied natural gas (LNG) storage tank.Yet, be installed in one and move on automobile or the steamer and configuration overcomes LNG Liquefied natural gas (LNG) storage tank by the method that moves the mechanical stress that causes, can be used for sunken tank equally.Therefore, be that example is described its structure at this with the LNG tank that is installed on the steamer.

At first; The LNG tank that is installed on the LNG Liquefied natural gas means of transportation can be divided into a kind of independent tank type (Independent Type) and a kind of film type (membrane type); Whether this classification is directly to be added on the insulating material correspondingly according to cargo load, below its details will be discussed.

As shown in table 1; Because Gaz Transport (GT) and Technigaz (TGZ) are in the nineteen ninety-five merging and rename Gaz Transport & Technigaz (GTT) as, the TGZ type that GT type that Gaz Transport produces and Technigaz produce is renamed as GTT NO 96-2 and GTTMark III respectively.

In the 6th, No. 035795 patent of the U.S. (U.S.Patent No.6,035,795); The U.S. the 6th, 378, No. 722 patent (U.S.Patent No.6; 378,722), the U.S. the 5th; 586, No. 513 patents (U.S.Patent No.5,586; 513), the U.S. discloses 2003-0000949 patent (U.S.Patent Laid-Open Publication No.2003-0000949), and Korea S discloses 2000-0011346 patent (Korean Patent Laid-Open Publication No.2000-0011346) etc. has description to the structure of above-mentioned GT type and TGZ type jar.

Table 1 The LNG tank classification

This film type GTT LNG Liquefied natural gas means of transportation is arranged to cargo load and directly is added on the insulating material or on the steamer hull, and between adjacent goods jar, install a cofferdam to prevent because the danger that the mechanical/thermal characteristic is brought.And then the air temperature in the cofferdam should remain on+5 ℃ or higher to prevent the inner panel generation low temperature brittleness of cofferdam one side.At last, install usually one utilize a thermal source (like water vapour or hot water) heating equipment, like a heating coil.In order to build this insulating material, at first build a scaffold at the steamer hull, and scaffolding, insulated case and film are made on the ground, and transport and install other material.Working hours under one old jar before the water is longer, and the working hours behind the water is longer under the film type jar.

As depicted in figs. 1 and 2; GTT NO 96-2 type means of transportation in the GTT type means of transportation is 0.5-0.7mm by thickness; The invar (Invar steel) that contains 36%Ni is made, and first and second sealing barriers 10 have almost consistent fluid tightness and intensity with 15.Therefore, goods can only use the transportation safely in a considerable time of second sealing barrier 15, even when first sealing barrier 10 is revealed.And then because the sealing barrier 10 of GTT NO 96-2 and 15 film are straight, the welding of this film is more more convenient than the welding of GTT Mark III type ruffled membrane.Therefore, the percent of automatization of GTT NO 96-2 type is than the height of GTT Mark III type.Wherein the overall length of GTTN0 96-2 type welding is than the length of GTT Mark III type.

In addition, the GTT NO 96-2 type of current military service is least identical with traditional G T type, because this model has used a plurality of dual link 17 to support this insulated case 11 and 16 (insulation barrier), rather than adopts U-shaped to fasten (U-shaped bars).The function of the critical piece of the thermal insulation part of the GTT NO 96-2 type storage tank of LNG Liquefied natural gas means of transportation is as shown in table 2.

The critical piece of table 2GTT NO 96-2 type storage tank thermal insulation part

Project	Function
		Connect rank sheet (Tongue)	Be installed in the insulator case and it be welded to lamina membranacea is interconnected, and lamina membranacea and insulator case are interconnected with the Tpiplex welding manner.
Joist (Joist)	Be installed between the insulated case, move horizontally and prevent to produce high stress with minimizing.
		First and second insulation barriers (Perlite)	Prevent to conduct heat to storage tank.
First sealing barrier (invar Invar)	For storage tank provides primary seal means, be directly directly to contact and definite this storage tank with-163 ℃ of low temperature goods.
		Second sealing barrier (invar Invar)	For storage tank provides the auxiliary seal means, and in the scheduled time that first sealing barrier is broken, prevent cargo leakage.

On the other hand, like Fig. 3 and shown in Figure 4, a GTT Mark III type is made by the thick waveform stainless steel membrane of 1.2mm, and additional one first sealing barrier 20.In the case, because waveform can absorb the contraction that low temperature causes, in film, be difficult to produce big stress.And then insulation barrier 21 and 26 is by manufacturings such as glass yarn (glass wool), Triple.During structure Mark III type, first and second insulation barriers 21 and 26 are made on the ground and are integrated.Therefore, the relative GTT NO of the structure 96-2 type of Mark III type is simple, and in GTT NO 96-2 type, first and second insulated case 21 and 26 will be installed respectively.

The function of the critical piece of the thermal insulation part of the GTT Mark III type storage tank of LNG Liquefied natural gas means of transportation is as shown in table 3.

The critical piece of table 3GTT Mark III type storage tank thermal insulation part

Project	Function
		Gummed auxiliary material (Mastic)	The transmission lade is to hull
Many plywood (Plywood)	Be installed between first, second sealing barrier and first, second insulation barrier, because the equiblibrium mass distribution of insulation barrier, sealing barrier bears constant bearing capacity, and reduces because the displacement that Vertical loading causes.
		Glass yarn (Glass wool)	Be installed between the insulated case, reduce Horizontal displacement, and prevent heavily stressed.

First and second insulation barriers (polyurethane foam (Polyurethane foam))	Prevent that transmission heat from arriving storage tank.
		Second sealing barrier (Triplex)	When first film, first sealing barrier for example in the scheduled time when two surfaces of being arranged to glasscloth and aluminium foil all connect, prevents cargo leakage.
First sealing barrier (SUS 304L)	With one first membrane structure that-163 ℃ of low temperature goods directly contact, primarily confirm the goods tank body, and have waveform configuration to overcome thermal stress.

So the GTT NO 96-2 type of configuration and the vitals of GTT Mark III type storage tank are an angle part (corner part).

Here, this angle part of LNG tank (limit parts) are because the sealing barrier separately (film) of storage tank (the unbalanced zone of load that the thermal stress of sealing barriers (membranes) produces.This angle part should be through disperseing this out of balance load to eliminate the stress that produces from storage tank with constructing.

A recent angle part technology about LNG tank comprises " water-stop and the thermal insulation jar of the corner structure of on a steamer supporting structure, building with a raising " that discloses in the korean patent application case 2000-0011347 of the Korea S Wise property office open source literature.

As shown in Figure 5, the corner structure that Korea S 2000-0011347 patent (Korean PatentPublication No.2000-0011347) discloses is employed in an intersection next door 2 of steamer hull and fixes a prefabricated compound girder 30 with the angular zone always that an internal surface 1 is bound up.This compound girder 30 comprises a heat insulator 40, and it is included in a strengthening net 39 (showing with dotted line) that forms at certain intervals on the entity W shape metal body 31.

Such prefabricated compound girder 30 is configured to the part of intersecting in next door 2 and an internal surface 1 surface of contact with one of steamer hull fixing through polymer resin 34; And with

securing means

32 and 33 with its opposite branch plane mechanical fasteners on the supporting structure of steamer hull, on the intersection next door 2 that this securing means 32 and 33 lays respectively at hull and the internal surface 1.

In addition, the bottom surface of this prefabricated compound girder 30 has an inclined-plane 42, thereby the zone, right angle that connects mutually with internal surface 1 in intersection next door 2 forms a drainage area 41.

The technology of making the angle part of LNG tanks with above-mentioned prefabricated compound girder 30 has some advantages, thus because its installation cost simple in structure is low, and the mechanical shock resistance that can improve sealing barrier, and need not to slacken the coloured part of this double bulkhead.Yet; The manufacturing process of this storage tank angle part is not easy; Because this prefabricated compound girder 30 as the basic element of character of this storage tank angle part comprises entity metal body 31, want successively on the artificial intersection next door 2 that be fixed to hull and the internal surface 1 with this entity metal body 31 of mechanical fastening system 32 and 33 (for example screw bolt and nut).

In the corner structure of above-mentioned film type LNG tank, for example, as the prefabricated compound girder 30 of the primary element of the corner assembly of above-mentioned film storage tank by secure on the intersection next door 2 of steamer hull and internal surface 1.Therefore, shake or the mobile of hull can produce part stress, therefore, may concentrate by stress in the angle part.Therefore, all reduce stress in decades and concentrate, and also need continue the effort of this respect in the future in effort.

In addition, the effort that also need continue in the future to be to reduce bubble (boil of gas:BOG), for example, because the loss that the low-temperature liquefaction natural gas gasifying causes, and structure and the manufacture process of simplifying LNG tank.

Summary of the invention

One side of the present invention provides a kind of liquid-container, and this liquid-container comprises: one first sealing barrier that directly contacts with liquid in the container; One structural walls is in order to the support liq container; A plurality of connectors with first sealing barrier and structural walls mechanical connection; And a midfeather structure between the structural walls and first sealing barrier; Wherein this midfeather structure can be mechanically connected to a plurality of connectors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of connector can make the midfeather structure move with respect to a plurality of connectors, and then can the moving with respect at least one first sealing barrier and structural walls of this midfeather structural arrangements.This midfeather structure comprises a first surface in the face of first sealing barrier, and wherein internal surface comprises the first surface in the face of this midfeather structure, and wherein the first surface of this midfeather structure can contact with the first surface of first sealing barrier.The first surface of midfeather structure is parallel fully with the first surface of first sealing barrier, and wherein the first surface of midfeather structure can slide with respect to the first surface of first sealing barrier.Structural walls comprises an outer wall and is the inwall of one and partition wall through connecting wall and the set of this outer wall.

In said vesse, the midfeather structure comprises the second surface in the face of this structural walls, and wherein this structural walls comprises the second surface in the face of the midfeather structure, and wherein the second surface of midfeather structure contacts with the second surface of structural walls.The second surface of midfeather structure and the complete level of the second surface of structural walls, and wherein the second surface of midfeather structure can slide with respect to the second surface of structural walls.This midfeather structure can be arranged to slide with respect to first sealing barrier and structural walls.With the just in time vertical direction of at least one first sealing barrier and structural walls on can arrange a plurality of connectors.This midfeather structure can have a plurality of through holes, and wherein each connector passes each through hole.This midfeather structure can be arranged to slide in direction completely parallel with it with respect at least one first sealing barrier and structural walls.

In said vesse, the midfeather structure comprises: in the face of one first insulation barrier of first sealing barrier; One second insulation barrier in the face of structural walls; And second sealing barrier that is positioned at first insulation barrier and second insulation barrier centre.The midfeather structure can have a plurality of through holes, and wherein each through hole can supply each connector to pass through.With second sealing barrier of midfeather structure be arranged to a plurality of at least connectors in a part form a fully liquid and be tightly connected.Second sealing barrier of this midfeather structure comprises that one extends to the part in each through hole, and wherein this part connector that can be arranged to and pass through hole is tightly connected fully.This connector comprises one second sealing barrier, it is arranged to second sealing barrier with the midfeather structure forms a fully liquid and be tightly connected.Second sealing barrier of this connector comprises a part that extends in each through hole; And wherein this part can be arranged to the second sealing barrier fully liquid with the midfeather structure and be sealedly connected on each connector that passes each through hole and directly have a gap, and wherein this gap is full of it with insulating material.

In said vesse, first insulation barrier comprises an isolation layer.This midfeather structure may further include a isolation layer between first insulation barrier and second sealing barrier.First insulation barrier comprises the outer cover of an insulating material.This midfeather structure comprises a plurality of mutual connections and forms a plurality of modules of this midfeather structure that wherein each module comprises: in the face of one first insulation barrier of first sealing barrier; One second insulation barrier in the face of structural walls; And one second sealing barrier between first insulation barrier and second insulation barrier.With the same distance of the second sealing barrier distance structure wall that can make each module of these a plurality of module arrangement, and be in line, and second sealing barrier of adjacent block can link together in liquid seal with second sealing barrier of adjacent block.This liquid-container comprises the means of transportation of fluid transfer, and this means of transportation comprises steamer, train or truck.This means of transportation comprises a steamer, and wherein this structural walls comprises the outer wall of steamer or the inner structure of the steamer that becomes one with the outer wall of steamer.

This midfeather structure comprises the plane structure between the planar section of first sealing barrier and structural walls; And the corner structure between the corner structure of the angle part of first sealing barrier and this structural walls.

The present invention has proposed a kind of liquid-container on the other hand.This liquid-container comprises: one first sealing barrier directly contacts with liquid in the container; One structural walls is in order to the support liq container; One midfeather structure between the structural walls and first sealing barrier; This midfeather construction machine is connected to a plurality of connectors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of connector makes the midfeather structure move with respect to a plurality of connectors, and this midfeather structure comprises one in the face of the first surface of first sealing barrier with in the face of a second surface of this structural walls; And when first sealing barrier and first surface slided each other, this first sealing barrier contacted with the first surface of midfeather.Directly do not connect between first sealing barrier and the first surface or do not connect each other, it suppresses their mutual slips.Thereby draw up when sliding each other when second surface directly is not connected or does not connect each other with structural walls, second surface contacts with structural walls.Structural walls comprises an outer wall and is the inwall of one and partition wall through connecting wall and the set of this outer wall.

In the aforesaid liquid container, first sealing barrier comprises one first sealed wall part and one second sealed wall structure, and wherein the first sealed wall structure can be connected with the second sealed wall structure division at a certain angle each other; Wherein structural walls comprises one first structural walls part and one second structural walls part; The wherein first structural walls structure division and the complete level of the first sealed wall structure; Wherein this midfeather structure comprises one first intermediate wall portion and one second intermediate wall portion; And wherein the first midfeather structure division can partly contact with first sealed wall, but directly is not connected or connects with first sealed wall part.First sealed wall part can be fully vertical each other with second sealed wall part.First sealed wall part and second sealed wall partly each other liquid seal be connected.This midfeather structure comprises one first insulation barrier, one second insulation barrier and one second sealing barrier.

The present invention provides a kind of steamer that comprises the tank body of a carrying liquid on the other hand.This tank body comprises: a sealed wall; One structural walls of hull; A plurality of anchors between sealed wall and structural walls, each anchor comprise one be connected to sealed wall first end and be connected to second end of insulation wall; And a midfeather structure between structural walls and sealed wall; Wherein the midfeather construction machine is connected to a plurality of anchors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of anchor makes the midfeather structure move with respect to a plurality of anchors, and then this midfeather can slide with respect in sealed wall and the structural walls at least one.This structural walls comprises the partition wall in the hull.A plurality of anchors can extend with at least one the vertical direction in the structural walls with sealed wall.This midfeather comprises a first surface that is connected with sealed wall, and wherein the first surface of midfeather does not connect or directly is connected with sealed wall.This midfeather comprises the second surface that contacts with structural walls, and wherein the second surface of midfeather can not connect or directly be connected with sealed wall.

In above-mentioned steamer, this midfeather can with sealed wall and structural walls at least one vertical direction on comprise a plurality of through holes.When first end and second end were connected respectively to sealed wall and structural walls, each anchor was arranged in of a plurality of through holes.This midfeather comprises one first insulation barrier, second sealing barrier of one second insulation barrier and between first insulation barrier and second insulation barrier, and wherein each anchor comprises and is arranged to the seal disc that is connected with the second sealing barrier liquid seal.The sealing dish can be parallel fully with second sealing barrier of midfeather.The sealing dish comprises at least one wave regions, and when the direction on the plane of placing seal disc applied power, this waveform portion can be extended or shrink.This midfeather comprises one first insulation barrier and one second sealing barrier, and it is parallel fully with sealed wall, and wherein first insulation barrier can be between the sealed wall and second sealing barrier.

This midfeather structure comprises at sealed wall closes the plane structure between the planar section of structural walls; And a corner structure, between an angle part of the corner structure of sealed wall and this structural walls.

Another aspect of the present invention, provide one have a liquid tank body steamer.This liquid tank body comprises: one with tank body in the sealed wall that directly contacts of liquid; One structural walls; Midfeather between structural walls and sealed wall; And wherein, the sealing wall can move with respect to one in midfeather and the structural walls at least.This midfeather can have one in the face of sealing wall and the first surface that is in contact with it, and wherein this first surface does not directly append to sealed wall.This steamer further comprises a reinforced layer between sealed wall and midfeather, and wherein this reinforced layer can become one with sealed wall, and contacts with midfeather.This midfeather comprises one first insulation barrier, one second insulation barrier, and second sealing barrier between first insulation barrier and second insulation barrier.Midfeather can have one in the face of structural walls and the second surface that is in contact with it, and wherein this second surface is arranged to and can be moved with respect to this structural walls.This midfeather can have one in the face of this structural walls and the second surface that is in contact with it, and wherein this second surface does not directly append on the structural walls.This structural walls comprises a steamer outer wall or the inwall that becomes one through connecting wall and outer wall.Sealed wall comprises one first sealed wall part and one second sealed wall part; Wherein first and second sealed walls part interconnects at a certain angle; Wherein this midfeather comprises one first intermediate wall portion and one second intermediate wall portion; Wherein first and second intermediate wall portion to be connecting mutually with the identical angle of the first and second sealed wall parts, and wherein first intermediate wall portion partly contacts with first sealed wall, and directly do not append to the first sealed wall part.

Another aspect of the present invention, provide one have a liquid tank body steamer.This steamer comprises: one first sealed wall; One at first sealed wall, second sealed wall all around; One first insulation barrier between first sealed wall and second sealed wall; One structural walls comprises hull outer wall or the inwall that becomes one through connecting wall and hull outer wall; One second insulation barrier between second sealed wall and structural walls; The a plurality of anchors that connect first sealed wall and insulation barrier, each ground tackle have one first end and one second end, and this first end is appended to first sealed wall, and this second end is appended to structural walls; And wherein second sealed wall can move with respect in first sealed wall and the insulation barrier at least one.Each anchor can with first sealed wall and second sealed wall at least one vertical direction on can extend.Second sealed wall can with first insulation barrier and second insulation barrier at least one become one, and wherein at least one in first insulation barrier and second insulation barrier is arranged to can move with respect in first sealed wall and the insulation barrier at least one.Each anchor passes the hole that is formed on second sealed wall.Each anchor can comprise one with second sealed wall on the seal disc that is connected of the edge liquid seal in hole.The bulk liquid of sealing dish and each anchor becomes one hermetically.At least one seal disc and second sealed wall can comprise a wave regions, and when the direction on the plane of placing seal disc applied power, this waveform portion can be extended or shrink.And wherein this second sealed wall can move with respect to one in a plurality of anchors.When second sealed wall was mobile with respect to one in a plurality of anchors, this waveform portion can be extended or shrink.

This midfeather structure comprises the plane structure between the planar section of sealed wall and structural walls; And a corner structure, between an angle part of the corner structure of sealed wall and this structural walls.This corner structure can connect with the angle part that is made up of an inwall and a partition wall, so this corner structure is slidably with respect to sealed wall only, and plane structure all is slidably with respect to sealed wall and structural walls.

The present invention provides a kind of modular walls on the other hand, and it is connected and is used to make a liquid-container with another modular walls.This modular walls comprises: one first skin; One is formed on first insulation barrier on first skin, and this first insulation barrier comprises first side surface that one first edge and extends from first edge; One is formed on second sealing barrier on first insulation barrier; One is formed on second insulation barrier on second sealing barrier; And one extending outwardly into the flange outside first side with the first lateral vertical direction from first skin.This modular walls comprises that further one is formed on second skin on second insulation barrier.Become delegation from first outer this flange that extends with the respective flanges of another modular walls.This second sealing barrier extends outwardly into outside first side with the direction with first lateral vertical.This second sealing barrier can be connected with the corresponding second sealing barrier liquid seal of another modular walls.Second insulation barrier comprises second side surface that one second edge and extends from second edge, and wherein second side surface is parallel fully with first side surface, and wherein, second side surface is positioned at inner position with respect to first side surface.This second sealing barrier can extend to outside second side surface.

The present invention provides a kind of modular walls on the other hand, and it is connected with another modular walls, and is used to make a liquid-container.This modular walls comprises: one first insulation barrier comprises one first edge and first side surface from its extension; One second insulation barrier comprises one second edge and second side surface from its extension, and second side surface is parallel fully with first side surface; And second sealing barrier between first insulation barrier and second insulation barrier, this second sealing barrier comprises that one extends to the extension outside first and second side surfaces.The extension of this second sealing barrier is arranged to be connected with the appropriate section liquid seal of another modular walls.The extension of this second sealing barrier can comprise a join domain, and wherein the cross section of join domain is definitely vertical with first edge on a plane, and this cross section comprises once inside out at least along yearning for the extension of extending from first side surface.This modular walls further comprises the skin that on first insulation barrier, forms, and this skin is included in the first lateral vertical direction and extends outwardly into the flange outside first side from first skin, and wherein this flange becomes delegation with the respective flanges of another modular walls.The respective side of first side surface and another modular walls surface relatively, and wherein second side surface is relative with the respective side surface of another modular walls.

The present invention provides a modular walls assembly on the other hand, comprising: a first wall module comprises a upper surface; One bottom surface; And one first side, this first wall module further comprises the sealing barrier of two insulation barriers and between two insulation barriers, first side comprises the sealing barrier extension that extends to outside the upper and lower surface; Further extend along the side extension of sealing barrier, thereby first side is divided into upper and lower side surface; One second modular walls comprises a upper surface; One bottom surface, and one second side, this second modular walls further comprise the sealing barrier of two insulation barriers and between two insulation barriers; Second side comprises upper and lower side surface; Second side further comprises the sealing barrier extension that extends in the upper and lower surface outside at least one, and further extend along the side extension of sealing barrier, thereby first side is divided into upper and lower side surface; Wherein make the side of winning relative first wall module and second modular walls, and the extension of the sealing barrier of first wall module and the second modular walls extension are in line with second side with arranging; And wherein first wall module extension is connected with the second modular walls extension liquid seal.

The present invention provides a kind of modular walls on the other hand, and it is connected with another modular walls, and is used to make a cryogenic liquid vessel, and this modular walls comprises: one first insulation barrier; One is positioned at first sealing barrier below second insulation barrier; One is positioned at second insulation barrier below second sealing barrier; And one extend outwardly into the flange outside second side surface of second insulation barrier from second insulation barrier.This flange becomes delegation with the respective flanges of another modular walls.The sealing barrier extends outwardly into outside first side surface in the direction perpendicular to first side surface.The extension of second sealing barrier is arranged to be connected with the corresponding sealing barrier liquid seal of another modular walls.The stairstepping of part excision is arranged at least one angle of this module.Plywood more than first is formed on first insulation barrier, and plywood more than second is formed under second insulation barrier, and the one edge of plywood more than second forms flange.

Above-mentioned modular walls assembly may further include a insulating material between the first and second modular walls downside surfaces, and the extension of first and second modules connects down at it.This modular walls assembly may further include a insulating material between the first and second modular walls uper side surfaces, and the extension of first and second modules connects above that.This modular walls assembly may further include one and has the first surperficial link of one first connection; And one have one second connect the surface second link; Wherein the part of extension extends to first and connects between the surface and the second connection surface at least, and a part of wherein extending is connected surperficial with first and second be connected the surface and all contact.Extension between the first connection surface and the second connection surface may receive the extruding of first link and first link and second link.First link comprises that being positioned at first connects lip-deep at least one giving prominence to, and wherein at least one giving prominence to is arranged to contact with this extension.Second link comprises that being positioned at second connects lip-deep at least one outstandingly, and wherein at least one second link outstanding is arranged at least one outstanding corresponding with first link.The extension of first wall module comprises that one has the attachment portion of cross section on a plane; This plane is fully perpendicular to the edge between lower surface and the extension; And when the extension when first side of first wall module extends out, this cross section change at least first power to.This attachment portion comprises at least one peak and a paddy.This modular walls assembly may further include the connector that is connected with extension liquid seal.

Another aspect of the present invention provides a kind of method of making a liquid-container.This method comprises: the anchor that a structural walls, a midfeather structure and a plurality of elongations are provided; The anchor of each elongation vertically has a first end section, an intermediate portion and a second end section, and this intermediate portion is between the first end section and second end section; The midfeather structure is placed on the structural walls; The first end section of anchor is connected with structural walls; Place sealed wall, thus can be with between this midfeather structure and anchor insert structure wall and the sealed wall; The second end section of anchor is connected with sealed wall; And wherein this midfeather structure directly is not connected with sealed wall, thereby stops mutual moving.This liquid-container comprises a steamer, and wherein this structural walls comprises an outer wall or an inwall of steamer.This midfeather structure does not append on the sealed wall.This midfeather structure is movably with respect in sealed wall and the structural walls at least one.

In said method, the step that connects the first end section comprises the first end section is appended to structural walls, thereby anchor is irremovable fully with respect to structural walls.The step that connects the second end section comprises the second end section is appended to sealed wall, thereby anchor is irremovable fully with respect to sealed wall.The step of placing the midfeather structure comprises a first wall module is placed on the structural walls; One second modular walls is placed on the structural walls, and adjacent with the first wall module; And with connection of first and second modular walls and formation midfeather structure.The step that connects the first end section of anchor comprises: the adjacent midfeather structure of anchor is placed, thereby first end section and structural walls are relative; And the first end section of anchor appended to structural walls, thereby it is vertically just in time vertical with structural walls.

Said method further comprises anchor and midfeather structured liquids is tightly connected.This method may further include anchor is connected to the midfeather structure, thereby this midfeather structure can move with respect to this anchor.The midfeather structure comprises one first insulation barrier, second sealing barrier of one second insulation barrier and between first insulation barrier and second insulation barrier.Second sealing barrier that this method may further include the midfeather structure is connected with anchor liquid seal.This method may further include a seal disc is connected with the intermediate portion liquid seal of anchor; Wherein the sealing dish with a vertically fully vertical dish in from the centre part extend gradually, and wherein the sealing dish is connected with the second sealing barrier liquid seal of midfeather structure.The sealing dish comprises at least one waveform portion, and this waveform portion can be extended with the vertical fully direction of the anchor longitudinal axis in this dish or shrink.

Another aspect of the present invention provides a kind of a kind of liquid-container made from said method, and wherein this anchor is located in the structrural build up through hole of midfeather.This liquid-container comprises a steamer, and wherein this structural walls comprises an outer wall or an inwall of hull.

Another aspect of the present invention provides a kind of method of manufacturing one liquid-container.This method comprises: a structural walls, a sealed wall, a plurality of modules that form a midfeather structure and the anchor of a plurality of elongations are provided, and the anchor of each elongation vertically has a first end section and a second end section; Arrange a plurality of modules forming this midfeather structure, and on the midfeather structure, form a plurality of through holes, two or more adjacent blocks are confirmed each through hole; Arrange a plurality of anchors to such an extent that make each anchor pass one of them through hole respectively; First end section and structural walls mechanical connection with anchor; Second end section and sealed wall mechanical connection with anchor; Wherein this midfeather structure is between structural walls and sealed wall.This midfeather structure directly is not connected with sealed wall, stops relatively moving with respect to sealed wall.This midfeather structure directly is not connected with structural walls, stops relatively moving with respect to structural walls.This liquid-container comprises a steamer, and wherein this structural walls comprises an outer wall of steamer or is connected to an inwall of this outer wall.

Improving above-mentioned membrane structure LNG tank in decades to reduce bubble (BOG) always; For example; Because the loss that the low-temperature liquefaction natural gas gasifying causes; Simplify the complicated insulation barrier and the structure of sealing barrier, thus since the manufacturing cycle that simple manufacture process reduces jar reduce the corner assembly of jar and the stress of sealing barrier etc.Yet, still need continue to improve.

A thermal insulation system that is installed on the storage tank bottom surface comprises a plurality of plane structures, its each fix by a riveted structure.In addition, owing to shake or ship moves goods is rocked, the insulation barrier of steamer hull can be out of shape, thereby can produce mechanical stress.Therefore, technology is developing to remove this mechanical stress always.

This aspect a kind of new LNG tank and building method thereof be provided on the other hand; Wherein, The different new film type LNG tank of a kind of with traditional film type LNG tank structure that the present invention proposes; Can eliminate the heat/mechanical stress that produces owing to storage tank load/unload LNG Liquefied natural gas effectively, and also can reduce the manufacturing cycle of jar owing to the simplification of manufacturing structure and manufacturing process.

Can realize an aspect of above-mentioned target according to the present invention; A LNG tank that provides comprises two continuous seal barriers and two insulation barriers; One first sealing barrier wherein contacts with the LNG Liquefied natural gas in the storage tank; And one first insulation barrier, one second sealing barrier and one second insulation barrier are positioned at the lower surface of first sealing barrier successively, and wherein this first sealing barrier is supported by an anchor structure; Be mechanically anchored on the bottom surface of jar, and this insulation barrier is installed to such an extent that can between first sealing barrier and tank body bottom surface, slide.Yet, equaling load is being added on anchor structure and the insulation barrier although in jar, load goods, insulation barrier can be with respect to a little slip of first sealing barrier, because first sealing barrier only is welded to anchor structure and by its supporting.Ship construction in that this storage tank is installed is under the situation of double-deck hull; Clearly the bottom surface of tank body (" bottom floor of the tank ") or internal surface (" inner surface ") be meant be included in profile with the bottom surface on interior barrier; The last barrier (top) of hull, and an intersection next door.

Here, the insulation system of hull comprises first and second insulation barriers, and this insulation system contacts with the interior barrier of hull.Therefore, if a steamer, waveform or analogous shape produce distortion and therefore crooked in hull, and insulation system has flexural stress equally.Therefore, although flexural stress is arranged, the insulation barrier unit can be along laterally a little slip, and can not destroy insulation system.

More preferably, with tackiness agent first and second insulation barriers are connect with the upper surface of second sealing barrier and lower surface respectively.When making storage tank, this insulation barrier and sealing barrier are integrated into a prefabricated combiner.In the present invention, be installed in the corner structure on the tank body angle and the plane structure that is installed on the tank body bottom surface can be made by prefabricated combiner.Second insulation barrier comprises insulating material that polyurethane foam is processed and the plane that plywood is processed more than one and be connected to this insulator lower surface.In addition, first insulation barrier comprises polyurethane foam insulating material and the plane that plywood is processed more than one and be connected to this insulator lower surface.Further, this second sealing barrier can be processed by aluminium sheet or pliable and tough thin plate (flexible sheet) (triple ply, preferably hard triple ply) (triplex, morepreferably, rigid triplex).

And; Second sealing barrier is one side-prominent from first and second insulation barriers; Thereby when making this prefabricated combiner, one second sealing barrier of second sealing barrier of this second barrier and an adjacent prefabricated combiner (plane structure) or adjacent anchor structure links together.Here, the not special restriction of the shape of the material of first insulation barrier.Describe in the patent that has like the application's case or TGZ, first sealing barrier can be processed or comprised a waveform portion by stainless steel.

In addition, the sideshake between second insulation barrier can fill up with the polyurethane foam insulating material.On the other hand, the sideshake between first insulation barrier can fill up with the ferry glass insulation material.

Further; Second sealing barrier (for example extends in the space of insulation barrier; Between the both sides of insulation barrier); Be connected in this space with the end of top and following fixed plate, and upward the connection surface of bottom plate comprises a recess part that this recess part can be inserted in the end of second sealing barrier with second sealing barrier.Here, this recess part can be crooked, and should below with the assemblying body of top fixed plate longitudinally slight bending to having an extra length, thereby can absorb the stress that the sealing barrier is met generation when cold.

According to another embodiment of the present invention, second sealing barrier is preferably in its upper and lower surfaces and is coated with a resin material, and this second sealing barrier extends to the side gap that adjacent insulation barrier forms.Further, comprising the connection part up and down that contacts with the end of second sealing barrier in this space, the connection surface of connection part forms to such an extent that have protrusion and recess part up and down, thus the resin that is coated in the second sealing barrier upper and lower surfaces can compress and bond.Such connecting means can further improve the sealing of second sealing barrier.

An embodiment who connects about second sealing barrier according to the present invention comprises: be fastened on the corner structure of tank body edge section, sliding is positioned at the plane structure on the tank body inner plane, and is fastened on tank body and makes plane structure be attached to the anchor structure on the internal surface of tank body.

Here; The preferable manufacture of this plane structure is; The one of which side is fixed by the corner edge projection, and corner structure is fixed to this corner edge projection, and comprises second insulation barrier on the same height of second insulation barrier that is installed in corner structure; One is formed on second sealing barrier on the second insulation barrier upper surface, and first insulation barrier that on the upper surface of second insulation barrier, forms.

This anchor structure comprises that one is fixed on the anchor steady arm on the flat board under the anchor, and dull and stereotyped machinery is fastened to the place that is bound up with plane structure under this anchor; Penetrate one second insulation barrier at its center by this anchor steady arm, be installed in the same height of one second insulation barrier of plane structure on; Penetrate one second sealing barrier at its center by this anchor steady arm, be fixed on the upper surface of second insulation barrier and be fastened to adjacent second sealing barrier of plane structure; Penetrate one first insulation barrier at its center by this anchor steady arm, be fixed on the upper surface of second sealing barrier; And one be fixed on this anchor steady arm upper end last cap.

In this configuration, flat board makes the following flat board of second insulation barrier of a modular construction of contiguous prefabricated combiner be fixed on the internal surface of hull under the anchor.Further, second sealing barrier of this anchor structure is included in the waveform portion that its outer circumference portion is divided formation.Here, second sealing barrier of anchor structure side-prominently is connected with second sealing barrier of contiguous prefabricated combiner from one of first insulation barrier of this anchor structure.In addition, first and second insulation barriers of anchor structure are bound up with the upper surface and the lower surface of second sealing barrier of tackiness agent and anchor structure respectively.

In addition, second insulation barrier of anchor structure comprises insulating material that polyurethane foam is processed and the upper surface that plywood is processed more than one and be connected to this insulator.First insulation barrier of anchor structure comprises polyurethane foam insulating material and the plane that plywood is processed more than one and be connected to this insulator upper and lower surfaces.The many plywood that are connected to the second insulation barrier low side of prefabricated combiner are given prominence to from the side of second insulation barrier, and utilize the anchor lower plate of anchor structure to be fixed on the bottom surface.Therefore, this insulation barrier can not move up, and can move on a small quantity in the horizontal direction, although they are fixed on same direction.

The corner structure that is configured to a prefabricated combiner comprises L shaped second insulation barrier, contacts with the place that the internal surface of tank body connects mutually; One second sealing barrier is formed on the upper surface of second insulation barrier; One first insulation barrier is formed on the upper surface of second sealing barrier; And a L shaped angle dunnage, the upper surface that is formed on first insulation barrier is to support load, and pre-constructed unit is fixed by the corner edge projection on the tank inner surface.

This angle dunnage can be slidably mounted to first insulation barrier of corner structure, thereby this dunnage can be shunk and extend.Further, with tackiness agent first and second insulation barriers of corner structure are attached to the upper surface and the lower surface of second sealing barrier of corner structure.In addition, first insulation barrier, second sealing barrier, second insulation barrier and angle dunnage are all made and are assembled in this prefabricated combiner.

And this prefabricated combiner (this corner structure) utilizes the corner edge projection on the tank inner surface and fixes.In addition, second sealing barrier side-prominent from first and second insulation barriers.And plate is formed on the lower surface of first and second insulation barriers, thereby its side is further outstanding from the side of insulation barrier, and these plates utilize fixed support to be fixed on the bottom surface of hull.And then the most handy tackiness agent is adhered to the lower surface of second insulation barrier on the bottom surface of hull.

In addition; First and second insulation barriers are mechanical connection each other; They utilize the connection stiffener that the upper end of lower support bar is connected and are fixing, and this lower support bar penetrates second insulation barrier and therefrom outstanding, and the lower end of this upper support bar penetrates first insulation barrier.The lower support bar is fit to and is fastened to be fixed on the low lip-deep bar support cap of second insulation barrier, and this lower support bar penetrates second insulation barrier and is fixed to and connects on the stiffener.And then, the upper support bar be fit to and be fastened to be fixed on the low lip-deep bar support cap of first insulation barrier and be connected stiffener on, penetrate first insulation barrier and support this angle dunnage.So far, upper support bar preferably is welded on the dunnage of angle.First sealing barrier is positioned on the upper surface of angle dunnage, and welds together.So be provided with, first sealing barrier of corner structure is by the lower support bar stable support that is connected the hull bottom surface, and upper support bar is connected with lower support bar, and the angle dunnage is connected with upper support bar.In addition, because the angle dunnage is by processing than slab, the asymmetric stress that produces of first sealing barrier of strut angle structure more stably.Equally, because that this angle dunnage and first insulation barrier of corner structure directly are connected is insecure, this angle dunnage can be slided with respect to first insulation barrier on a small quantity.Therefore, because variation of temperature, the mechanical stress that the difference of shrinking between first insulation barrier and angle dunnage or first sealing barrier causes can be lowered or eliminate equally.

This anchor lower flat plate is used for a bottom flat board of second insulation barrier of an adjacent cells structure is fixed on the internal surface of hull.Second sealing barrier of anchor structure preferably includes a waveform portion that is formed in its outer edge part.In addition, with tackiness agent first and second insulation barriers of this anchor structure are connected with lower surface with the upper surface of second sealing barrier of this anchor structure respectively.

Still according to of the present invention one further embodiment, this anchor structure comprises an anchor lower flat plate, is used for an anchorage plate is fixed on bar support cap there.Above-mentioned anchorage plate is installed on the internal surface of tank body with normal interval (space), and disposes a fastener hole; Be vertically fixed to a bar and support an anchor strut of cap; Penetrate one second insulation barrier at its center by this anchor steady arm; Penetrate one second sealing barrier at its center by this anchor steady arm, be fixed on the upper surface of second insulation barrier of anchor structure; Penetrate one first insulation barrier at its center by this anchor steady arm, be fixed on the upper surface of second sealing barrier of anchor structure; One is fixed on the last cap of this anchor steady arm upper end, is used for fixing first insulation barrier of this anchor structure; And one connect insulation barrier, is positioned at the side of closing on first insulation barrier and the upper surface of second sealing barrier, separates an intended distance with first insulation barrier of anchor structure, and be fixed to the upper surface of second sealing barrier of adjacent plane structure and anchor structure.This connection insulation barrier preferably be positioned at the adjacent plane structure first insulation barrier separately a side near; And close on the upper surface of second sealing barrier of the plane structure on second insulation barrier that is fixed on this plane structure, and this connection insulation barrier also is bound up with second sealing barrier of this plane and anchor structure.Insulating material is filled up in gap between first insulation barrier of connection sealing barrier and anchor structure.

According to another aspect of the present invention; The present invention proposes the production method of a LNG tank; Wherein this LNG tank comprises two continuous seal barriers and two insulation barriers; One first sealing barrier wherein contacts with the LNG Liquefied natural gas in the storage tank, and one first insulation barrier, and one second sealing barrier and one second insulation barrier are positioned at the lower surface of first sealing barrier successively.The production method of this LNG tank that the present invention proposes comprises the steps: to form the edge protrusion near the interior angle of storage tank, and on the inner plane of tank body, fixedly mounts anchorage seat plane at certain intervals; Fixing additional prefabricated corner structure between the edge protrusion that forms, each comprises one second insulation barrier, one second sealing barrier, one first insulation barrier and one jiao of support plate; With fixed support this fixed angles structure is fixed on the edge protrusion, and simultaneously flat board under the anchor is fixed on the dull and stereotyped upper surface of anchorage seat, then the anchor strut is vertically fixed on center dull and stereotyped under the anchor; Assembling also is fixed to each plane of prefabricated plane structure on each plane of fixed support of fixed angles structure; Each prefabricated plane structure includes one second insulation barrier, one second sealing barrier and one first insulation barrier, and with other face assembling of this plane structure and be fixed under anchorage seat flat board and the anchor in the gap between the flat board; Fill up insulating material in the gap between second insulation barrier of corner structure and plane structure, and the while is at second insulation barrier and second sealing barrier of the fitted around anchor structure of anchor strut; Second sealing barrier of corner structure is tightened with second sealing barrier that closes on plane structure each other; Make between second sealing barrier of plane structure and tighten mutually, and make equally between second sealing barrier of second sealing barrier and anchor structure of plane structure and tighten each other; At first insulation barrier of the fitted around anchor structure of anchor strut, and anchor upper surface plate and anchor insulation board be fixed on first insulation barrier, and cap on the anchor is fixed on the anchor strut, thereby accomplish the prefabricated of this anchor structure; Fill up insulating material in the gap between first insulation barrier of corner structure, plane structure and anchor structure; And first sealing barrier that will have waveform portion is fixed on the upper surface of corner structure, plane structure and anchor structure.

Flat board under the anchor is fixed on the dull and stereotyped upper surface of anchorage seat; The step that then the anchor strut is vertically fixed on center dull and stereotyped anchor under comprises the steps: that dull and stereotyped down and anchorage seat flat board bolt is connected with anchor; The bar support cap is fixed on center dull and stereotyped under the anchor, and the anchor strut is connected with bar support cap bolt.The step of filling up insulating material in the gap between second insulation barrier of corner structure and plane structure comprises that the insulating material of processing with polyurethane foam fills up these gaps.

And then; Make between second sealing barrier of second sealing barrier and adjacent plane structure of corner structure and tighten each other; Make between second sealing barrier of second sealing barrier of plane structure and tighten each other, and the step of tightening each other between second sealing barrier of second sealing barrier and anchor structure of plane structure is comprised: will be positioned at the following fixed flat planar of second sealing barrier below and last fixed flat planar above being positioned at second sealing barrier fixed flat planar bolt that faces down and be connected.Here; Make between second sealing barrier of second sealing barrier and adjacent plane structure of corner structure and tighten each other; Make between second sealing barrier of second sealing barrier of plane structure and tighten each other; And the step of tightening each other between second sealing barrier of second sealing barrier and anchor structure of plane structure is comprised: bolton is fixed to the following fixed flat planar and the last fixed flat planar of second sealing barrier; And utilizing the curved section that forms, the upper surface of the fixed flat planar that faces down becomes the shape of a bending.

Whether above-mentioned LNG tank of the present invention can be installed in steamer, sunken tank and the vehicle of any kind, no matter have goods to move.

According to the present invention; Structure through simplifying corner structure can shorten its manufacture process; This corner structure is used to be mounted on the plane structure that transportation meets the LNG Liquefied natural gas steamer inner storage tank of cryogenic liquide; And, can firmly keep the liquid seal characteristic of anchor structure through the adjacent planar structure is fastenedly connected.Further; When ship navigates by water; Cause under the situation of the deformation of hull because ship shakes or moves, because first sealing barrier of insulation system of the present invention and direct fastening the tightening of anchor structure, and closely not to be connected with insulation barrier; This insulation barrier can slightly slide with respect to first sealing barrier, thereby can adapt to the distortion of hull.Therefore, this insulation system is not easy to be destroyed.

Further; Be installed in the structure of the liquified natural gas tank (this liquified natural gas tank is used to store the LNG Liquefied natural gas that meets cryogenic liquide) in the hull through simplification; Thereby shorten its manufacture process; And firm install when keeping liquid seal can the strut angle structure slab, can easily reduce or eliminate the stress that causes owing to mechanical contraction or thermal shrinkage.Therefore, ship can be more reliable.

In addition; Because the use tackiness agent will connect insulation barrier and the second following sealing barrier is bound up; Wherein utilizing up and down between second sealing barrier successively, connected element interconnects successively; Further improved the fixed performance of second sealing barrier of corner structure annex, liquid seal performance and Security have also further improved.

The present invention compared with prior art has tangible advantage and beneficial effect.Through from the above, the invention relates to a kind of liquid tank system, disclosed a kind of liquid-container that is suitable for storing LNG Liquefied natural gas (LNG).This LNG Liquefied natural gas container comprise one with storage tank in the sealed wall that directly contacts of liquid, an and structural walls, this structural walls is an outer wall or the inwall that becomes one through connecting wall and outer wall.This container further comprises a plurality of connectors, these a plurality of connectors with sealed wall and structural walls and place structural walls and inwall between a midfeather construction machine connect.This midfeather structure can one of them moves with respect to inwall and structural walls at least.

Above-mentioned explanation only is the general introduction of technological scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.

Description of drawings

Fig. 1 and Fig. 2 are sectional drawing and the perspective views that shows a GTT NO 96-2 type LNG tank (for example, traditional film type LNG tank).

Fig. 3 and Fig. 4 are sectional drawing and the perspective views that shows a GTT Mark III type LNG tank (for example, traditional film type LNG tank).

Fig. 5 is a sectional drawing that shows the corner assembly structure of traditional LNG tank.

Fig. 6 (a) and Fig. 6 (b) have shown the internal structure of the corner assembly structure of LNG tank according to an embodiment of the invention.

Fig. 7 sets forth an overall perspective that is installed in the annexation between the corner structure of the LNG tank in the steamer according to one embodiment of the invention.

Fig. 8 sets forth a part of amplification profile perspective view that is installed in the corner structure of the LNG tank in the steamer according to one embodiment of the invention.

Fig. 9 to Figure 23 sets forth the perspective view of manufacture process that is installed in the LNG tank of a steamer hull interior according to one embodiment of the invention successively.

Figure 24 shows a part of amplification view of the method for its second sealing barrier of interlocking of LNG tank according to an embodiment of the invention.

Figure 25 shows a part of enlarged perspective of the method for its second sealing barrier of interlocking of LNG tank according to an embodiment of the invention.

Figure 26 (a) and figure (b) are whole amplification views of setting forth the annexation between the corner structure that is installed in the LNG tank in the steamer according to an embodiment of the invention.

Figure 27 is the part excision perspective view of LNG tank according to another embodiment of the present invention.

Figure 28 to Figure 36 is the perspective view of setting forth the manufacture process of the LNG tank that is installed in a steamer hull interior according to another embodiment of the present invention successively.

Figure 37 and Figure 38 are the amplification views that shows according to the state when interlocking of second sealing barrier in the LNG tank of the present invention.

Figure 39 one comprises the cross-sectional view of a steamer of liquid-container.

Figure 40 is the cross-sectional view that amplifies of the wall of a liquid-container among Figure 39.

Figure 41 schematic representation that to be example be connected one second sealing layer among a seal plate and an anchor pole and Figure 40 or sealing barrier.

50: angle support plate 51: first insulation barrier of angle part

52: second sealing barrier 53 of angle part: second insulation barrier of angle part

54,56: dull and stereotyped 57,58: insulator

60: lower support bar 61: the bar support cap

70: upper support bar 80,81: the edge projection of angle part

90: connect and support 100: corner structure

101: fixed support 109: stud pin

110: base plate 111: the anchor upper surface plate

113: second insulation barrier 114 of anchor structure: second sealing barrier of anchor structure

115: waveform 119: the last cap of anchor structure

150: anchor structure 200: plane structure

201: following plate material 202: second insulation barrier of plane structure

203: second sealing barrier of plane structure

204: first insulation barrier of plane structure

205: upper surface plate 211: insulator

212: go up fixed flat planar 213: following fixed flat planar

214: 250: the first sealing barriers of set screw nut

251: waveform portion

Embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To its embodiment of liquid tank system, structure, characteristic and the effect thereof that proposes according to the present invention, specify as after.

The invention relates to the LNG tank of a kind of its stored high pressure, low-temperature liquefaction rock gas.All the time, this LNG tank structure can remain impact resistance and fluid tightness.

Being installed in the automobile of a goods move inside or this LNG tank of steamer is different with the sunken tank that moves hardly, and goods moves the mechanical stress that causes in storage tank because the countermeasure that should prepare to be fit to is eliminated.Yet the countermeasure of elimination mechanical stress that is used to be installed in the LNG tank of a steamer can be used in sunken tank equally.Therefore, be that example is introduced its structure in detail with a LNG tank that is installed in a steamer here.

Figure 39 for example understands the cross-sectional view according to a demonstration steamer 3900 of an embodiment.In the illustrated embodiment, steamer 3900 by one form the steamer profile an outer wall 3901 and an inwall 3903 form.Inwall 3903 becomes one with outer wall 3901 through connecting wall or structure 3905, and strengthens outer wall 3901.Equally, in case outer wall 3901 is damaged, inwall 3903 will stop water to flow into the inside of steamer 3900.In certain embodiment, a steamer 3900 possibly not have inwall 3903.In other embodiments, inwall 3903 can be used with the interconnected structure of outer wall (not shown) and replace.In the illustrated embodiment, the inside of inwall 3903 is divided into four inner spaces 3911 by partition wall 3907.Not kind method separation can be used in the inside of inwall 3903, does not perhaps separate.Partition wall 3907 becomes one with inwall 3903 and outer wall 3901.Some makes the interconnective structures of inwall 3903 parts (not shown) can replace partition wall 3907 through the internal chiasma with inwall 3903.

Each inner space 3911 comprises that one is used to contain the liquid tank body of cryogenic liquide, like LNG Liquefied natural gas.As an example, the left side of figure illustrates the structure of second inner space.Innermost inwall 250 contacts with the interior liquid of tank body, as one first sealing barrier or one first sealed wall.A plurality of anchors or connector 3915 directly append to first sealed wall 250 and inwall 3903 (or partition wall 3907).Thus, first sealed wall 250 becomes one with inwall 3903 (and partition wall 3907), and does not move with respect to inwall 3903 (and partition wall 3907) usually.In one embodiment, there are not inwall 3903, the first sealed walls 250 to become one with outer wall 3901.First sealed wall 250 becomes one with outer wall 3901, inwall 3903 and/or partition wall 3907, and by its support, these wall integral body are as a structural walls.In the illustrated embodiment, this structural walls comprises inwall 3903 and partition wall 3907.

Midfeather structure 3917 is inserted between first sealed wall 250 and the structural walls.(200a 200b) between the planar section and structural walls 3903 of first sealed wall 250, and is called a plane structure 200 to some midfeather structures 3917.Other midfeather structure 3917 (100) in an angle part of first sealed wall 250 and by inwall 3903 and partition wall 3907 one of them angle part that constitute between.This angle midfeather structure 3917 (100) is called as corner structure 100.Midfeather structure 3917 is arranged to be suspended in the space between first sealed wall 250 and the structural walls.Each midfeather structure 3917 has a first surface (not shown) and the second surface (not shown) in the face of structural walls in the face of first sealed wall 250.In one embodiment, when the first surface of midfeather structure 3917 and first sealed wall 250 or when any part that first sealed wall becomes one contacts, the first surface of midfeather structure 3917 does not directly append on first sealed wall 250.When the second surface of midfeather structure 3917 contacted with structural walls, it did not directly append on the structural walls.In one embodiment, midfeather structure 3917 interconnects each other, and forms a single integrated entity.Each midfeather structure 3917 comprises the module of a plurality of mutual connections.In other words, each midfeather structure 3917 can be an individual module.

And then in other embodiments, can form the wet tank of the different shape outside the sphere, and for example common sphere, cube, rectangular, ellipse, cylindrical etc.In other embodiments, wet tank can be formed on truck, train or other means of transportation.Equally, in other embodiments, wet tank 3919 can form on the ground or be underground.

Figure 40 illustrates an enlarged view of circular portion 3923 among Figure 39 for example.In the illustrated embodiment, midfeather structure (

plane structure

200a, 200b and corner structure 100) comprises one first insulation barrier or

layer

204,51, one second insulation barrier or

layer

202,53 and 1 second sealing barrier or layer 52,203.Each midfeather structure may further include one or more extra power ergosphere.

In the illustrated embodiment, each anchor comprises

anchor pole

112a, 112b and a seal disc (not shown).The end of

anchor pole

112a, 112b is appended to first sealed wall 250, and the other end of

anchor pole

112a, 112b is appended to structural walls 3903,3907.Hereinafter will be set forth the details that anchor

pole

112a, 112b is appended to first sealed wall 250 and

structural walls

3903,3907 in detail with reference to extra additional embodiments.With the anchor 3915 that connects first sealed wall 250 and

structural walls

3903,3907 be placed on by two or more adjacent structures 100,200a, 200b forms and definite space in.In other embodiments, anchor 3915 is placed in the through hole of single midfeather structure 100,200a, the last formation of 200b.

Accessory 113a, 113b are placed in the surrounding space of anchor pole 112 and constitute between the adjacent midfeather structure 100,200a, 200b in this space.Accessory 113a places in the space between second insulation barrier 202 and 53.Accessory 113b places in the space between second insulation barrier 202 and 53.The space 3929,3931 of not shown accessory can be full of with insulating material.In other words, another kind of accessory can place in the space 3929,3931.Accessory 113a, 113b have the groove 3927 of an extension before and after drawing.Midfeather structure 100,200a, 200b have a rank sheet or a flange 3925.Like diagram, receive flange 3925 at accessory 1113a, the last groove that forms 3927 of 113b, thereby plane structure 200a can not move along the y direction of anchor pole 112a, and plane structure 200b can not move along the y direction of anchor pole 112b.Yet the depth ratio flange of groove 3927 is dark, thereby plane structure 200a can be towards moving with direction away from anchor pole 112a, that is, and and in direction perpendicular to the longitudinal axis of anchor pole 112a.In like manner, plane structure 200b can be towards moving with direction away from anchor pole 112b.Because accessory 113a has prevented corner structure 100 along the moving of anchor pole 112a y direction, and accessory 113b prevented corner structure 100 along the moving of anchor pole 112b y direction, so corner structure 100 can not move at all.Yet said circumstances can make the midfeather structure move at the y direction of adjacent anchor wall.

Still with reference to Figure 40, second sealing layer 52,203 of midfeather structure 100,200a, 200b is connected with the seal disc liquid seal of anchor, and hereinafter will further be discussed with reference to Figure 41.In the place that is connected with second sealing layer 52,203 near anchor, on the seal disc of second sealing layer 52,203 and/or anchor, form one or more waveforms 115.Each waveform can make the seal disc or second sealing layer 52,203 in a direction, especially towards or shorten or elongation away from the direction of anchor.

Like what discussed, in one embodiment, the first surface of midfeather structure 100,200a, 200b is faced first sealed wall 250, and does not promptly connect also directly additional with first sealed wall 250.Equally, the second surface of midfeather structure 100,200a, 200b is faced

structural walls

3903,3907, and does not promptly connect also directly additional with structural walls 3903,3907.By above-mentioned structure and structure, when plane structure 200a remains between first sealed wall 250 and the structural walls 3903, its with perpendicular to anchor pole 112a longitudinally direction suspend.Likewise, plane structure 200b with perpendicular to anchor pole 112b longitudinally direction suspend.As discussed above, yet because flange 3925 is connected with groove 3927,

plane structure

200a and 200b can not move at

anchor pole

112a, 112b longitudinal direction respectively.In another embodiment, corner structure connects with the angle part that is made up of one of inwall and partition wall, and thus, corner structure only is equivalent to sealing configuration and can slides, and plane structure all can be slided with respect to sealed wall and two of structural walls.So far, anchor structure allows first sealed wall to move with respect to corner structure or structural walls.

Figure 41 has illustrated the structure of this anchor pole 112a, a seal disc 3933, waveform portion 115 etc.With sealing dish 3933 be placed on the vertically vertical plane of anchor pole 112a in, and be connected with anchor pole 112a liquid seal.In illustrated configuration, for example, seal disc 3933 is clipped in the middle by two

nuts

3936,3937 that are threaded with anchor pole 112a side.Being familiar with this art will appreciate seal disc 3933 usefulness distinct methods will be connected with anchor pole 112a liquid seal.Seal disc 3933 has a waveform portion 3925 near on the edge of, and sealing dish 3933 is connected with second sealing layer, 203 liquid seals of contiguous midfeather structure.Hereinafter will further be set forth the connection of waveform portion 3925 with reference to Figure 24.Be familiar with this art and will appreciate that this waveform portion 3925 can be substituted with the structure that second sealing layer 203 forms liquid seal by other.

Seal disc 3933 has at least one waveform or gauffer 115 around anchor pole 112a.This waveform or gauffer 115 can shrink or stretch seal disc 3933 in perpendicular to the plane of anchor pole 112a longitudinal direction.Although not shown, can form waveform or gauffer 115 equally on second sealing layer 203 of adjacent midfeather structure.In other words, can on second sealing layer 203, form waveform or gauffer 115, rather than on seal disc 3933.

LNG tank of the present invention comprises one second insulation barrier, contacts with the internal surface of steamer hull; One second sealing barrier forms in the upper surface of this second insulation barrier; And one first insulation barrier, form in the upper surface of this second sealing barrier.In the present invention, preferably overboard corner structure and plane structure are processed prefabricated combiner in advance, and make in this inner space of tying storage tank.

In other words, this prefabricated corner structure at first is fixed on the inside of a hull, and then, this plane structure is processed on corner structure again.In this case, guarantee that at the on-the-spot anchor structure of making of a storage tank manufacturing this plane structure is fixed on the hull.

Fig. 6 is an in-built sectional view of the corner assembly of LNG tank according to an embodiment of the invention, and Fig. 7 sets forth an overall perspective that is installed in the annexation between the corner structure of the LNG tank in the steamer according to one embodiment of the invention.Fig. 8 sets forth a part of amplification profile perspective view that is installed in the corner structure of the LNG tank in the steamer according to one embodiment of the invention.

To shown in Figure 8, is prefabricated according to this corner structure 100 of one embodiment of the invention like Fig. 6, and have following structure: its second insulation barrier 53 is L shaped, and the one jiao of position that connects with the face of hull contacts; As above its second sealing barrier 52 is added and is fixed to a upper surface of second insulation barrier, and same its first insulation barrier 51 that on the upper surface of second sealing barrier, forms.Here, the most handy tackiness agent is bound up first and second insulation barriers 51 of corner structure and the upper surface and the lower surface of 53 and second sealing barrier 52 securely.

One jiao of support plate 50, first and

second insulation barrier

51 and 53, second sealing barrier 52 and the above-mentioned annexation that goes up between the

lower support bar

70 and 60 will be described hereinafter in further detail.

The inside of the steamer of one storing liquefied rock gas is made up of a bottom surface 50 and an integrally formed intersection next door 2, and comprises that one can install the inner space of corner structure of the present invention.More specifically, the present invention relates to one and is installed in above-mentioned bottom surface 1 and the vertical locational corner structure of next door 2 with predetermined angle connection that intersect.Therefore, the shape of second insulation barrier can be different and L shaped because the angle that reservoir surface connects with the difference of the shape of storage tank or position, angle difference.

As above-mentioned, this L shaped second insulation barrier 53 contacts with vertical 2 in next door that intersects with bottom surface 1, and is positioned at bottom surface 1 and vertically intersects the position of next door 2 with predetermined angle connection.In the present invention, term " first " and " second " LNG Liquefied natural gas that is used for distinguishing storage tank relies on certain barrier by at first still secondly sealing and insulation.

Second insulation barrier 53 comprises second insulator 58 that a polyurethane foam is processed and one second insulation dull and stereotyped 56 of being processed by plywood more than one and be connected to the second insulator lower surface.This second insulation dull and stereotyped 56 contacts with vertical 2 in next door that intersects that the hull internal surface forms with bottom surface 1.Here with reference to the U.S. the 4th, 747,513,5,501; 359,5,586,513 and 6,035; No. 795 patents, No. 1989/09909 patent of International Publication WO, the production method of the insulation barrier that day disclosure 2000-038190 number and 2001-122386 patent etc. are described, shape, material etc.Here insulation barrier and the wood thereof that will quote in the above-mentioned official documents and correspondence connect.

After forming second insulation barrier 53, on second sealing barrier, 52 surfaces placed on it.Second sealing barrier 52 is used for replenishing the LNG Liquefied natural gas that prevents storage tank and leaks.With tackiness agent the upper surface of second insulator 58 of second insulation barrier 53 and the lower surface engages of second sealing barrier 52 are got up.Second sealing barrier preferably (is called again: flexible) process by aluminium sheet or pliable and tough thin plate.Above-mentioned U. S. Patent has disclosed a kind of pliable and tough triple ply (flexible triplex) for the 6th, 035, No. 795, but preferably uses a kind of stronger hard triple ply (harder rigid triplex) in the present invention.

As above-mentioned; After second insulation barrier 53 and second sealing barrier 52 are connected with each other; Lower support bar 60 will be fixed on first insulation barrier 51 that is formed at second sealing barrier, 52 upper surfaces, and this lower support bar 60 runs through second insulation barrier 53 and second sealing barrier 52.

That is to say in second insulation barrier 53, to have the hole that a plurality of confession lower support bars 60 can pass at certain intervals.Each bar support cap 61 of fastening fixing strut 60 ends can be inserted into the low side in the hole in second insulation dull and stereotyped 56, and by its support.

This lower support bar 60 is inserted in the bar support cap 61, passes second sealing barrier 53, and be fixed in this bar support cap the low side of this lower support bar 60 is fastening with set screw nut 62.

Further, the upper end with this lower support bar 60 that runs through second insulation barrier 53 and second sealing barrier 52 is fixed on the upper surface of second insulation barrier 53.With a set screw nut 63 and the sealing barrier set screw nut 64 that is fastened on lower support bar 60 upper ends second sealing barrier 52 is fixed in lower support bar 60.

Second insulation barrier 53 and second sealing barrier 52 are run through in the upper end of this lower support bar 60, and they are fixed on first insulation barrier 51, and the lower end of first insulation barrier 51 is run through and be fixed in the upper end of this lower support bar 60.

In other words, first insulation barrier 51 contacts also fixed connection with it with second fixing on second insulation barrier, the 53 upper surfaces sealing barrier 52.The composition of first insulation barrier 51 is following: dull and stereotyped once 55, contact with 52 of second sealing barriers and with the fastening with it connection of tackiness agent; One first insulator 57 is positioned on following dull and stereotyped 55 the upper surface; And a upper surface plate 54, with the fastening connection in last plane of first insulator 57.Dull and stereotyped up and down 54 and 55 of first insulation barrier is processed by many plywood, and first insulator 57 is processed by polyurethane foam.

At this moment, one connect stiffener 90 be positioned at first insulation barrier 51 following dull and stereotyped 55 on, lower support bar 60 therefrom passes, thus a upper support bar that connects this lower support bar and will mention hereinafter.That is to say; The upper end of running through the lower support bar 60 of second insulation barrier 53 and sealing barrier 52 is passed to be positioned at and is connected stiffener 90 on 51 times flat boards 55 of first insulation barrier, and stiffener 90 can pass through one bolt-nut fastening means and clamping each other thereby connect.

The lower end of a plurality of (in the accompanying drawing of the present invention being two) upper support bar 70 is through being inserted in the bar support cap 71; Connect stiffener 90 and be fixed to; Its king-rod support cap 71 is fixed on the bottom surface that connects stiffener 90; For example, fix with the method for welding, clamping with tightening nut 72 should connection stiffener 90 again.

Therefore, run through the upper end of the lower support bar 60 of second insulation barrier 53 and sealing barrier 52, and the lower end of running through the upper support bar 70 of first insulation barrier 51 is firmly secured to and connects stiffener 90.

Shown in Fig. 6 (a); This upper support bar 70 is fixed in first barrier 51 and upper surface plate 54 thereof and by its support; And L shaped corner structure dull and stereotyped 50 is positioned on the upper surface of first insulation barrier, 51 upper surface plates and by its support, thereby can apply aforesaid storage tank asymmtric load above that.Here, angle support plate 50 is without tackiness agent, but is mechanically connected to first insulation barrier 51, so this angle support plate 50 can slide on first insulation barrier 51, though this angle support plate since heat can shrink and extend.Hereinafter will be set forth one first sealing barrier 250, and it is positioned on the angle support plate 50 also with it with being welded to connect.

Fig. 6 (b) has shown another example of the method on the angle support plate 50 that upper support bar 70 is connected to.That is to say, this upper support bar 70 run through first insulation barrier 51 and on upper surface plate 54, and this upper support bar 70 is directly connected to angle supporting plane 50, thereby supports this angle supporting plane 50.At this moment, between first insulation barrier 51 of upper support bar 70 and corner assembly, there is a little space, and between angle support plate 50 boxes first insulation barrier 51, directly connects through tackiness agent.Therefore, this angle support plate 50 can be slided with respect to first insulation barrier 51 a little.The slip of this angle support plate can be offset between first insulation barrier 51 and this angle support plate 50 because different materials different to the contraction of temperature variation and extension.Further, have benefited from above-mentioned structure, by the lower support bar that is connected tank inner surface 60, be connected the upper support bar 70 of lower support bar 60, and be connected to first sealing barrier that the angle dunnage 50 of upper support bar 70 can the firm support corner assembly.In addition, because this angle support plate 50 is processed by a thick slightly flat board, it is enough to first sealing barrier of strut angle parts firmly, and this first sealing barrier can produce asymmetric stress.

In addition, process by aluminium sheet or pliable and tough thin plate (flexible sheet) (triple ply Triplex) according to second sealing barrier 52 of corner structure 100 of the present invention.Second sealing barrier 52 is further outstanding from the side of first and

second insulation barriers

51 and 53, thereby in next process, is fixed on one second sealing barrier 203 of a contiguous prefabricated plane structure.

Fig. 9 has shown the plane structure of construction according to LNG tank of the present invention.With reference to figure 9, plane structure 200 of the present invention outside hull, accomplish prefabricated after, introduce in the hull.The structure of this plane structure 200 is similar with corner structure 100.In the case, at the upper part of first insulation barrier 204 of this plane structure the upper surface plate 205 that plywood is processed more than is installed.

That is to say; In this plane structure; Once dull and stereotyped 201 contacting on second insulation barrier 202 of the plane structure of processing by polyurethane foam with 1 of the internal surface of hull; By aluminium sheet or pliable and tough thin plate (flexible sheet) (triple ply; Preferably hard triple ply) (triplex, preferablyrigid triplex) second sealing barrier 203 of processing is connected with the upper surface of second insulation barrier once more, and is connected with the upper surface of the upper surface plate of being processed by many plywood 205 with second sealing barrier 203 by first insulation barrier 204 that polyurethane foam is processed.

And then; Second sealing barrier 203 of second insulation barrier of following flat board 201 and plane structure is outstanding a little from the side of first and

second insulation barriers

202 and 204; Thereby in next process, they can and be fixed with adjacent plane structure 200 or corner structure 100 interlockings.The opposite side edge of this plane structure contacts with corner structure 100, and is configured to the shape of part excision, thereby can make, and fixes with anchor structure 150 of the present invention.Plane structure 200 of the present invention has the height same with adjacent angular structure 100.

Figure 10 is that a perspective view that is installed in an internal surface of a hull with stud pin 109 is given prominence at the demonstration edge; Figure 11 shows that a corner structure is assembled to a perspective view of the edge projection among Figure 10; Figure 12 shows a perspective view that the corner structure among Figure 11 is fixed to hull; Figure 13 be show with a plane structure be placed into Figure 12 in a perspective view of corner structure adjacent position; Figure 14 shows the plane structure among Figure 13 is fixed to hull, and the anchor strut is at a perspective view of this place's connection; Figure 15 is a perspective view that shows that second sealing barrier and insulation barrier with anchor structure are installed to the anchor strut; Figure 16 shows a perspective view that a plurality of plane structures is fixed to hull; Figure 17 shows a perspective view that first insulation barrier of anchor structure is fixed to those plane structures among Figure 16; Figure 18 shows a perspective view that first insulation barrier of anchor structure is inserted into second sealing barrier among Figure 17; Figure 19 shows the anchor upper surface plate is fixed to the perspective view on first insulation barrier among Figure 18; Figure 20 is a perspective view that shows on dull and stereotyped first insulation barrier that is installed in the anchor structure among Figure 19 of anchor insulation; Figure 21 shows the dull and stereotyped fixing perspective view of the insulation of the anchor among Figure 20; Figure 22 shows a perspective view that fills up first insulator; And Figure 23 shows one first sealing barrier is installed to the perspective view on the precast construction among Figure 22.

Hereinafter, will set forth a LNG tank and manufacture process thereof according to an embodiment of the invention in detail referring to accompanying drawing 10 to 23.

LNG tank of the present invention is installed on the bottom surface of hull, and one intersect or longitudinal division 2 meets at right angles from the bottom surface or predetermined angle to intersect or longitudinal direction extends.

Its

edge projection

80 and 81 that at first, will be used for fixing corner structure is fixed on bottom surface 1 and intersects next door 2.At this moment, preferably that this

edge projection

80 and 81 welding is fixing, and with angular spacing one intended distance, thereby make prefabricated corner structure can insert into this space.After corner structure 100 has inserted between

edge projection

80 and 81, between this corner structure and this edge are outstanding, form some spaces.

Shown in Figure 10 to 12,, a fixed support 101 is fixed between

edge projection

80 and 81 if corner structure 100 is installed between edge projection 80 and 81.At this moment, this fixed support 101 preferably is connected with 81 bolts with this edge projection 80.The fixed support 101 that forms preferably has one to be given prominence to; Should be outstanding with corner structure 100 and

edge projection

80 and 81 between the space of formation corresponding; Therefore this fixed support 101 securely is assembled in the space that forms between corner structure 100 and

edge projection

80 and 81, thereby prevents that corner structure from moving between the projection on the edge of.At first this angle mechanism 100 is in the bottom surface of hull and its bottom surface 1 or intersect next door 2 and be connected, and next utilizes fixed support 101 to append to inward flange outstanding 80 and 81.

Shown in figure 13, an anchorage seat of an anchor structure dull and stereotyped 110 is used for fixing the plane structure 200 of installing continuously from corner structure 100, and this anchorage seat dull and stereotyped 110 is fixed on the surface in bottom surface 1 and intersection next door 2 equally at certain intervals.So far, certain interval forms one group of stud pin 109 on the internal surface of hull.At this moment, the part of this stud pin 109 and bottom surface 1 and intersect 2 in next door and contact, and by sharpening and extruding, thereby this stud pin 109 is welded on the internal surface of hull.

Then, anchorage seat dull and stereotyped 110 has through hole corresponding to stud pin 109, thereby this stud pin 109 can assemble by these through holes and is assembled on the anchorage seat dull and stereotyped 110.At this moment, this anchorage seat dull and stereotyped 110 is connected (for example welding or bonding) internal surface to hull.Further, following dull and stereotyped 201 of second insulation barrier of the thickness of anchorage seat dull and stereotyped 110 and plane structure thickness is identical.

Then, shown in figure 14, an anchor dull and stereotyped 111 connects with the upper surface of anchorage seat dull and stereotyped 110 down, thus this anchor down dull and stereotyped 111 can the overlay planes structure second insulation barrier following dull and stereotyped 201.So far, under anchor on dull and stereotyped 111 the position of corresponding stud pin 109 form a plurality of through holes.Then, dull and stereotyped 110 usefulness, one nut of anchorage seat is completely fixed on the stud pin 109, and wherein this stud pin 109 runs through flat board 111 under the anchor.

So, plane structure 200 is only limited to and moves up, because flat board 111 is fixing under down dull and stereotyped 201 usefulness fixed supports 101 or the anchor, but can slide a little in the horizontal direction.

Then, shown in Figure 14 and 15, an anchor strut 112 is vertically fixed on the center of flat board 111 under the anchor.

To the end, under anchor dull and stereotyped 111 in be formed centrally a predetermined recessed space.Further, anchorage seat dull and stereotyped 110 is positioned at the below of flat board 111 under the anchor.At this moment, anchorage seat dull and stereotyped 110 has a plurality of and stud pin 109 corresponding through holes, and stud pin 109 passes through hole.Then, through fastening nut anchorage seat dull and stereotyped 110 is fixed to stud pin 109.

One bar support cap 120 is installed in the recess part of flat board 111 under the anchor through a center hole of anchorage seat dull and stereotyped 110.Bar support cap 120 is arranged to comprise or the whole nut that forms.In the present invention, this bar support cap 120 has a nut shape part at the center, and aforementioned anchor strut 112 vertically is connected to bar support cap 120.Here, the mode of bar support cap 61 among this bar support cap 120 and nut and Fig. 8 and set screw nut 62 is the same.

Further, heat possibly transmitted through anchor strut 112 up or down, but is preferably in when designing anchor strut 112, considers its diameter and pyroconductivity, thereby can the liquid gas from storage tank be dropped to minimum to the transmission of heat of hull.

This anchor strut 112 at first supports the load that first sealing barrier produces, and this load will add in next process.Directly connect with the pre-constructed unit and first sealing barrier of tackiness agent, but this connection is not strong insulation barrier.Therefore, different with traditional insulation barrier parts, this pre-constructed unit can slightly slide with respect to first sealing barrier, and the stability of tank structure resistance to deformation has also improved.

Each plane structure 200 places its position and fixing with respect to anchor of the present invention following dull and stereotyped 111 and anchor strut 112 like above-mentioned same means of fixation.At this moment, each plane structure 200 places the particular space on the hull internal surface of being confirmed by flat board under the anchor 111 1, and fixing.

Above-mentioned plane structure 200 outside hull, accomplish prefabricated after, reinstall hull.One upper surface plate 205 connects with the upper surface of first insulation barrier 204 of plane structure 200.

In other words, in plane structure 200 of the present invention, following dull and stereotyped 201 of second insulation barrier contacts with 1 of the internal surface of hull; Second insulating material that polyurethane foam is processed connects with dull and stereotyped down upper surface; Second sealing barrier of being processed by aluminium sheet or pliable and tough thin plate (triple ply) (flexible sheet (triplex)) 203 connects with the upper surface of second insulation barrier once more; Then, the upper surface of first insulation barrier 204 processed of polyurethane foam and second sealing barrier connects; And the upper surface plate 205 processed of many plywood connects with the upper surface of first insulation barrier once more.

second insulation barriers

202 and 204; Thereby; In next process, they can reciprocal interlockings and are fixed to adjacent plane structure 200 or second sealing barrier of corner structure 100.The opposite side edge side of plane structure contacts with corner structure 100, and is configured to the shape of part excision, thereby can make and fix with anchor structure 150 of the present invention.Plane structure 200 of the present invention has the height same with adjacent angular structure 100.

Prefabricated plane structure 200 of the present invention is fixed on the internal surface of hull; Side of dull and stereotyped 201 is outstanding from the side of second insulation barrier 202 of the plane structure on corner structure (not shown) opposite under it; And be inserted in the gap between the side of hull internal surface and fixed support, wherein to be used for that corner structure is fixed to the edge outstanding for this fixed support; And following dull and stereotyped 201 opposite side of this prefabricated plane structure 200 is outstanding from the another side of second insulation barrier 202 of plane structure; And be inserted into simultaneously in the gap between anchorage seat dull and stereotyped 110 and the anchor following dull and stereotyped 111; Wherein, this anchorage seat dull and stereotyped 110 is fixed on the hull internal surface 1, and is made of metal; And this anchor dull and stereotyped 111 is fixed on the dull and stereotyped upper surface of anchorage seat down, and is processed by many plywood.

As above-mentioned, if plane structure 200 is inserted and fixing with respect to the anchorage seat dull and stereotyped 111 and the anchor strut 112 of anchor structure of the present invention, one second insulation barrier 113 of anchor structure is shown in figure 15 to be placed anchor play on the flat board 111.And then one second sealing barrier 114 has all waveform parts, and places on the upper surface of second insulation barrier 113 of anchor structure.And, second sealing barrier 114 is assembled in the fixedly step 121 of a formation on anchor strut 112, and, then these second sealing barrier, 114 bolts is connected to strut 112, thereby is fixed with set screw nut by its support.

Shown in Figure 15 to 22; If plane structure 200 places and fixing; The insulating material of processing with polyurethane foam fills up the space that

second insulation barrier

53 and 202 by corner structure 100 and plane structure 200 forms, and around second insulation barrier 113 and second sealing barrier 114 that fill up anchor structure all around of anchor strut 112.

Second insulation barrier 113 of anchor structure is the hexahedron type, and the flat board that the insulating material of being processed by polyurethane foam and many plywood are processed is formed.Second sealing barrier 114 of anchor structure additional and that be fixed to the upper surface of second insulation barrier is processed by aluminium sheet or pliable and tough thin plate (triple ply) (flexible sheet (triplex)).

In the steamer of LNG tank was installed, the hull that causes owing to the reason of wave etc. was crooked, and the mechanical stress a when part is navigated by water with ship is relevant.And then if therefore distortion of hull, the stress on the insulation barrier and second sealing barrier increases.Therefore, preferably shown in figure 23 in order to reduce the mechanical stress on the sealing barrier, around second sealing barrier 114, form waveform 115.That is to say,, be difficult for producing mechanically deformation or thermal distortion on insulation barrier or the sealing barrier on the hull internal surface because when plane structure 200 was slided, waveform portion 115 stretched or shrinks along glide direction.

And then the gap between each plane structure 200 is because the mechanical stress on the insulation barrier layer has the trend of increase.It is dull and stereotyped down 111 to be fixed on the anchor of anchor structure 150 according to the plane structure 200 of storage tank of the present invention, yet this plane structure 200 can be slided on the internal surface of hull a little, removes and need not under the anchor flat board.

For above-mentioned reasons, self can absorb the distortion of hull this insulation barrier, because corner structure 100 is fixed in hull, but each plane structure 200 can partly slide at a longitudinal direction, even on hull, produce stress.

As above-mentioned, after corner structure 100 of the present invention had been installed to the internal surface of hull with each plane structure 200, the insulating material of processing with polyurethane foam 211 filled up the gap that forms between their second insulation barriers separately.Then, with fixation method the second adjacent separately insulation barrier is interconnected and fixes.

In other words; Second sealing barrier 52 of corner structure 100 is fixed to the sealing barrier 203 of adjacent plane structure 200; Second sealing barrier 203 of two adjacent plane structures 200 is interfixed, and second sealing barrier 203 of plane structure 200 is fixed to second sealing barrier 114 of anchor structure.

And then the insulating material of processing with polyurethane foam 210 fills up the space that forms between first insulation barrier separately.

Then, first sealing barrier 250 is attached on the package assembly.First sealing barrier welding (preferably fillet welded) to anchor structure, preferably is welded to the last cap 119 of anchor structure.To set forth first sealing barrier in detail hereinafter.

Figure 24 shows a part of amplification view of the method for its second sealing barrier of interlocking of LNG tank according to an embodiment of the invention; And Figure 25 shows a part of enlarged perspective of the method for its second sealing barrier of interlocking of LNG tank according to an embodiment of the invention; And then Figure 26 is a whole amplification view of setting forth the annexation between the corner structure that is installed in the LNG tank in the steamer according to an embodiment of the invention.

Be connected with fixation method in 25 and fixing second sealing barrier of the present invention with Figure 24.Such fixation method can be applied to all second sealing barriers of the present invention.

That is to say; As an example; Shown in figure 24, following fixed flat planar 213 places near

second sealing barrier

52 and 203 mutual position adjacent with last fixed flat planar 212, thereby second sealing barrier inserts between upper surface plate and the following flat board; Wherein this

second sealing barrier

52 and 203 is projected into respectively in the space (for example, the space between the insulation barrier) that is formed with first,

second insulation barrier

204 and 202 of plane structure by first, second insulation barrier 57 of corner structure and 58.At this moment, clamp each other through make down flat board 213 and upper surface plate 212 with a set screw nut 214, thereby fixedly secure

second sealing barrier

52 and 203, although be not limited to this.Here, following flat board 213 is made of metal with upper surface plate 212.

And then following flat board 213 interconnects second sealing

barrier

52 and 203 with upper surface plate 212 and is fixing, and produces crooked.This can be clamped to crooked recess part in correspondence with each other through the part of facing each other that makes down flat board 213 and upper surface plate 212.Because the far-end of second sealing barrier such as above-mentioned be crooked, the sealing of second sealing barrier has improved, and can prevent that any LNG Liquefied natural gas from revealing through first sealing barrier.

In addition, it is crooked slightly that the assemblying body of following flat board 213 and upper surface plate 212 is preferably in a y direction, thereby have an extra length.Therefore, even this assemblying body shrinks owing to storage tank is full of the decline of LNG Liquefied natural gas temperature, this assemblying body can easily absorb owing to it shrinks the stress that produces, and further overcomes because the load that heat/mechanical contraction and extension produce.

And then, no matter because second sealing barrier is an insulation barrier with another, still hull connection, insulation barrier has certain degrees of freedom, therefore, can prevent to damage insulation barrier owing to the hull internal surface is out of shape.

As above-mentioned, fill up insulating material in the lower room that corner structure 100 box plane structures 200 form, and second sealing barrier interfixes with the aforementioned fixation method.Then, set forms in the lower end a nut and a packing ring fill up fur, and are fixed to anchor strut 112 around it.At this moment, this nut collar keeps the state that insulating material pushed away with a predetermined pressure downwards.Here, in the storage tank of steamer that LNG Liquefied natural gas is packed into after, the amount of insulating material, thickness for example availablely reduces through the pressure that increases LNG Liquefied natural gas.Therefore, this nut should be considered aforesaid minimizing insulation thickness in design.

Then, equally anchor insulation dull and stereotyped 118 is fixed on the first anchor insulation barrier 116, and doughnut upper end cap 119 further is inserted and secured on the end of anchor.So far, first anchor insulate dull and stereotyped 118 upper surfaces in be formed centrally a predetermined recessed space, and in 119 of anchor upper end cap and this recess part.Because this anchor upper end cap 119 comprises a nut or forms integral body with a nut structure, can be fixed on the upper end of anchor strut 112 at an easy rate.Therefore, the assembling of anchor structure 150 is accomplished.

Figure 26 is a whole amplification view of setting forth the annexation between the corner structure that is installed in the LNG tank in the steamer according to an embodiment of the invention.Anchor structure of the present invention 150 through a series of process manufacturings has same connection shown in figure 26.

If corner structure 100 of the present invention and plane structure 200 are installed on the internal surface of hull; And anchor structure 150 is also assembled completion; Fill up the superjacent air space (that is, being positioned at the superjacent air space that second insulation barrier is confirmed the space) between first insulation barrier 204 of corner structure 100, plane structure 200 and anchor structure 150 with insulating material.Glass yarn fills up this superjacent air space as insulating material, thereby can overcome the thermal shrinkage of first insulation barrier more neatly, and more easily solves the problem that thermal stress is brought.And then, also have an advantage, even the deformation of hull, prefabricated unit can move with the distortion of hull on a small quantity.

As above-mentioned, using insulating material, glass yarn for example, after the space between first insulation barrier of each precast construction filled up, the first film type sealing barrier 250 that will have a waveform portion 251 was fixed on the composite structure.First sealing barrier 250 is generally processed by the stainless steel with good corrosion and thermostability.

And then first insulation barrier 250 can be processed by the known materials that proposes in traditional Mark III type tank body or the referenced patent document of the present invention (Korea S 2001-0010438 number or 2001-0010152 patent application case).Can change the material and the shape of first insulation barrier.And then, the U.S. the 3rd, 299,598,3,302,359 and 3,510, in first insulation barrier of setting forth in No. 278 patents is also included within.

In addition, form waveform portion 251 along the space of confirming by composite structure 100,150,200 respectively at a y direction, and in local same other the extra waveform portion that forms near this waveform portion 251.Since with first sealing barrier 250 that LNG Liquefied natural gas in the storage tank directly contact can be in these waveform portion 251 very large thermal shrinkage of generation and extensions, so the waveform portion of formation should be able to be located in and easily reduce this thermal distortion flexibly.And then the reason that above space between each first insulation barrier, forms waveform portion 251 at longitudinal direction is that the thermal stress of storage tank can be through easy must the reduction with the interaction of the thermal shrinkage of second sealing barrier that appends to first insulation barrier and extension.

Shown in figure 27; In LNG tank according to another embodiment of the present invention; One second insulation barrier 292 (for example is installed in building; The steamer of storage LNG Liquefied natural gas) in the definite space, and one second sealing barrier 292 and one first insulation barrier 294 is installed on the upper surface of second insulation barrier successively.

Here, the adjacent end portion of first insulation barrier 294 above second insulation barrier, 292 ends be attached to first insulation barrier one be connected between the insulation barrier 297 and form a predetermined space.

And then, one first insulation barrier 276 of an anchor structure is installed in the center of connection insulation barrier 297, and between the connection insulation barrier 297 and first insulation barrier 276, fills up the insulator 325 of glass yarn system.

Manufacture process according to another embodiment's of the invention described above LNG tank will be set forth as follows:

In setting forth each accompanying drawing of the present invention, each constituent element has all been added reference number, should be appreciated that same reference number represents same constituent element, even same constituent element is presented in the different drawings.

And, according to another embodiment of the present invention identical with among the embodiment in plane structure or corner structure fixation process and the present invention.Therefore, will omit the elaboration of same process here.

Like Figure 28 and shown in Figure 29, behind flat board 111 and anchor strut 112 under the anchor that plane structure 200 is inserted and is fixed to anchor structure 150, insert second insulation barrier 113 of anchor structure.

Around form waveform portion 115 second sealing barrier 114 be positioned on the upper surface of second insulation barrier 113 of anchor structure.Second sealing barrier 114 is assembled in the fixedly step 121 that on anchor strut 112, forms, and by its support.

And then; With reference to Figure 30; Install and be connected to the side of adjacent separately first insulation barrier 294 of face structure with connecting insulation barrier 297, and will connect on the upper surface that insulation barrier 297 is installed in second sealing barrier 293 on second insulation barrier, 292 upper surfaces that are bound up on plane structure.In this embodiment of the present invention, will connect on the upper surface of first sealing barrier 114 of second sealing barrier 293 and anchor structure that insulation barrier 297 is attached to plane structure with a kind of tackiness agent P.

Therefore, with tackiness agent can with this connection insulation barrier 297 can be more firm be attached to

second sealing barrier

114 and 293.

At this moment, adjacent side interval one predetermined gap (1-4 millimeter) that connects first insulation barrier 294 of insulation barrier 297 and plane structure.This gap will be suitable for, and when hull deforms, plane structure 200 can move in corresponding to the space in this gap, and also can absorb this distortion.

And then, will connect insulation barrier 297 and place on adjacent second sealing barrier, 293 upper surfaces, and seal the end of

second sealing barrier

114 and 293.

Connect insulation barrier 297 and

second sealing barrier

114 and 293 fastening connections owing to use above-mentioned tackiness agent P to make, LNG Liquefied natural gas can not arrive second sealing barrier 293 of plane structure or second sealing barrier 114 of anchor structure.Therefore, guaranteed to prevent the leakage of LNG Liquefied natural gas.

As above-mentioned, use fixation method that each

second sealing barrier

114 and 293 is interfixed.Then; With the order shown in Figure 31 to 36; With first insulation barrier 116 of anchor structure be assemblied in anchor strut 112 around, and the circular recess part that anchor upper surface plate 337 is inserted into a plane forms on first insulation barrier 116, thus be fixed to the upper end of anchor strut 112.

Then, anchor insulation dull and stereotyped 338 is added and is fixed on the upper surface of anchor upper surface plate 337, and cap on the anchor 339 is inserted and be fixed to the dull and stereotyped center of anchor insulation once more.So far, in the upper surface of first anchor insulation dull and stereotyped 338, be formed centrally a predetermined recessed space, and cap 339 on this anchor is placed in this recessed space.Because cap 339 comprises a nut or forms with a nut structure is whole on this anchor, it can easily be fixed to the upper end of anchor strut 112.Therefore accomplish the assembling of anchor structure 150.

After accomplishing said process, can fill up with insulating material according to the space between

first insulation barrier

276 and 297 of anchor structure of the present invention (that is, being positioned at the space of the definite top, space of second insulation barrier).Fill up the space with glass yarn 325 as insulating material, thereby can overcome the thermal shrinkage of

first insulation barrier

276 and 297 more neatly, and more easily solve the problem that thermal stress is brought.

Fill up the space that

first insulation barrier

276 and 297 confirms with glass yarn 325 insulating material such as grade after, the first film type sealing barrier 250 that will have a waveform portion 251 is fixed on the composite structure.First sealing barrier 250 is processed by the stainless steel with good corrosion resistance and thermostability usually.In addition, first insulation barrier 250 can be processed by the known materials that proposes in traditional Mark III type tank body or the referenced patent document of the present invention (Korea S 2001-0010438 number or 2001-0010152 patent application case).Can change the material and the shape of first insulation barrier.

Here, with the fixation method of Figure 37 and 38 kinds of demonstrations second sealing barrier 293 of the present invention is connected and fixing.This fixation method can be applied to all second sealing barriers of the present invention.

That is to say; As an example; Shown in figure 37, will go up connected element 312 and be installed near second sealing barrier, 293 mutual position adjacent, so they contact with 293 of second sealing barriers with following connected element 313; Wherein second sealing barrier 293 be projected into separately by first and second insulation barriers 292 of corner structure and 294 and the space confirmed of first and

second insulation barriers

204 and 202 of plane structure in (that is the space between the insulation barrier).

And then, coat resin material 293a at the upper and lower surfaces of second sealing barrier 293, and extend in the space of adjacent insulation barrier.

At this moment, clamp mutually, second sealing barrier 293 is fixedly secured, although be not restricted to this through connected

element

312 and 313 about a self-drilling screw 314 generals.So far, connecting the perforated portion 297a that this self-drilling screw 314 of formation can insert on the insulation barrier 297.

Here, set screw or screw 314 directly penetrate connected element 312 and following connected element 313, will go up connected element 312 and interfix with following connected element 313.If use this set screw or screw, need not extra bolt hole on these parts and just can accomplish fixing.For example, can use self-drilling screw in the present invention.

And then, in retaining screw 314, comprise a plain washer 314a or elastic washer 314b, thereby packing ring keeps with a predetermined pressure to the state that presses down the insulator upper surface.Here, retaining screw 314 is preferably tightened, and reduces the amount of insulating material, for example thickness through the pressure that increases LNG Liquefied natural gas.

And, on the connection surface of last connected element 312 and following connected element 313, form a recess part to hold second sealing barrier 293.In addition, form at the two ends of this recess part each other face-to-face or the convex portion 312a and the 313a that replace each other.With set screw 314 fixing above-mentioned on connected element 312 during with following connected element 313, these parts make

convex portion

312a and 313a that the resin material that is coated with is pressed on second sealing barrier 293.

At this moment, be full of resin material 293a in the recess part that between

convex portion

312a and 313a, forms, thus the space between the last connected element 312 of sealing and the following connected element 313 and second sealing barrier 293.Here, this resin material 293a is processed by rectifiable resin, and compre sion molding is corrected again.

Therefore, improve the sealing of second sealing barrier, prevented any possibility that LNG Liquefied natural gas leaks from first sealing barrier 250.

The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technological scheme scope of the present invention; When the structure of above-mentioned announcement capable of using and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations; But every content that does not break away from technological scheme of the present invention, all still belongs in the scope of technological scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.

And the LNG tank of the present invention that is installed in the hull equally also can be installed in the LNG tank of ground.

As above-mentioned; LNG tank of the present invention has advantage; Because be installed in the steamer mounting structure of tank body that meets the LNG Liquefied natural gas of cryogenic liquide with transportation through simplification; Can shorten its manufacture process, when keeping fluid tightness, can easily reduce because the stress that the mechanically deformation that loading or unloading causes produces equally.

Claims

1. liquid-container is characterized in that it comprises:

One first sealing barrier directly contacts with liquid in the container;

One structural walls, in order to the support liq container, structural walls comprises an outer wall and is the inwall of one and partition wall through connecting wall and the set of this outer wall;

A plurality of connectors are with first sealing barrier and structural walls mechanical connection; And

One midfeather structure; Between the structural walls and first sealing barrier; Wherein this midfeather construction machine is connected to a plurality of connectors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of connector makes the midfeather structure move with respect to a plurality of connectors, so this midfeather structural arrangements can one of them moves with respect at least the first sealing barrier and structural walls.

2. liquid-container according to claim 1; It is characterized in that wherein said midfeather structure comprises a surface; In the face of first sealing barrier; Wherein first sealing barrier comprises a surface, and in the face of this midfeather structure, and wherein slide with respect to the surface of first sealing barrier in the surface of midfeather structure.

3. liquid-container according to claim 1 is characterized in that wherein said midfeather structure is arranged to slide with respect to first sealing barrier and structural walls.

4. liquid-container according to claim 1 it is characterized in that wherein said midfeather structure has a plurality of through holes, and wherein each connector passes each through hole.

5. liquid-container according to claim 1 is characterized in that wherein said midfeather structure comprises:

One first insulation barrier is in the face of first sealing barrier;

One second insulation barrier is in the face of structural walls; And

One second sealing barrier is positioned in the middle of first insulation barrier and second insulation barrier.

6. liquid-container according to claim 5 is characterized in that wherein the midfeather structure has a plurality of through holes, and wherein through hole can supply each connector to pass through.

7. liquid-container according to claim 6, second sealing barrier that it is characterized in that wherein said midfeather structure be arranged to a plurality of connectors at least a portion form one in fact liquid seal be connected.

8. liquid-container according to claim 7; Second sealing barrier that it is characterized in that wherein said midfeather structure comprises a part that extends in each through hole, and wherein this part be arranged to the connector that passes through hole in fact liquid seal be connected.

9. liquid-container according to claim 6 is characterized in that wherein said connector comprises one second sealing barrier, be arranged to second sealing barrier of midfeather structure form one in fact liquid seal be connected.

10. liquid-container according to claim 9; Second sealing barrier that it is characterized in that wherein said connector comprises a part that extends in each through hole, and wherein this part is arranged to the second sealing barrier fully liquid sealing engagement with the midfeather structure.

11. liquid-container according to claim 5 is characterized in that wherein said midfeather structure comprises:

Plane structure is between the planar section of first sealing barrier and structural walls; And

Corner structure is between the angle part of the inwall of one and this structural walls that partition wall constitutes in the angle part of first sealing barrier with by outer wall and through connecting wall and the set of this outer wall.

12. liquid-container according to claim 1 is characterized in that wherein said midfeather structure comprises interconnective a plurality of module to form this midfeather structure, each module comprises:

One first insulation barrier is in the face of this first sealing barrier;

One second insulation barrier is in the face of this structural walls; And

One second sealing barrier is between first insulation barrier and second insulation barrier.

13. liquid-container according to claim 12; It is characterized in that wherein arranging a plurality of modules so that the same in fact distance of the second sealing barrier distance structure wall of each module; And be in line with second sealing barrier of adjacent block, and second sealing barrier of adjacent block links together with liquid seal.

14. a liquid-container is characterized in that it comprises:

One first sealing barrier directly contacts with liquid in the container;

One midfeather structure; Between the structural walls and first sealing barrier; This midfeather construction machine is connected to a plurality of connectors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of connector makes the midfeather structure move with respect to a plurality of connectors, and this midfeather structure comprises a first surface of facing first sealing barrier and a second surface of facing this structural walls; And

Wherein, when first sealing barrier and first surface slided each other, this first sealing barrier contacted with the first surface of midfeather structure.

15. liquid-container according to claim 14 is characterized in that wherein said midfeather structure is arranged to slide with respect to first sealing barrier and structural walls.

16. a ship is characterized in that the tank body that it comprises a kind of carrying liquid, this tank body comprises:

One sealed wall;

One structural walls of this ship;

A plurality of anchors, between sealed wall and structural walls, each anchor comprises one first end that is connected to sealed wall and one second end that is connected to structural walls; And

One midfeather structure; Between structural walls and sealed wall; Wherein this midfeather construction machine is connected to a plurality of anchors; And wherein the mechanical connection in the middle of midfeather structure and a plurality of anchor makes the midfeather structure move with respect to a plurality of anchors, and then this midfeather structure is with respect at least one slip in sealed wall and the structural walls.

17. ship according to claim 16 is characterized in that wherein said midfeather structure comprises:

Plane structure is between the planar section of sealed wall and structural walls; And

Corner structure is between the angle part of the inwall of one and this structural walls that partition wall constitutes in the angle part of sealed wall with by outer wall and through connecting wall and the set of this outer wall.