CN115210494A - Storage facility for liquefied gas - Google Patents
Storage facility for liquefied gas Download PDFInfo
- Publication number
- CN115210494A CN115210494A CN202280001709.6A CN202280001709A CN115210494A CN 115210494 A CN115210494 A CN 115210494A CN 202280001709 A CN202280001709 A CN 202280001709A CN 115210494 A CN115210494 A CN 115210494A
- Authority
- CN
- China
- Prior art keywords
- storage facility
- stop
- primary
- wall
- fastening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003860 storage Methods 0.000 title claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 137
- 229910052751 metal Inorganic materials 0.000 claims abstract description 63
- 239000002184 metal Substances 0.000 claims abstract description 63
- 230000004888 barrier function Effects 0.000 claims abstract description 57
- 239000012528 membrane Substances 0.000 claims abstract description 52
- 238000005304 joining Methods 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 47
- 238000007667 floating Methods 0.000 claims description 24
- 239000012263 liquid product Substances 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910000746 Structural steel Inorganic materials 0.000 claims description 6
- 230000000284 resting effect Effects 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000003252 repetitive effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 30
- 239000003949 liquefied natural gas Substances 0.000 description 16
- 239000007789 gas Substances 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 11
- 238000003466 welding Methods 0.000 description 9
- 229910000640 Fe alloy Inorganic materials 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
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- 239000000945 filler Substances 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/025—Bulk storage in barges or on ships
- F17C3/027—Wallpanels for so-called membrane tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
- B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2231/00—Material used for some parts or elements, or for particular purposes
- B63B2231/02—Metallic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0157—Polygonal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0329—Foam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0358—Thermal insulations by solid means in form of panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/232—Manufacturing of particular parts or at special locations of walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/035—Propane butane, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/011—Improving strength
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
- F17C2270/0107—Wall panels
Abstract
The invention relates to a storage facility comprising a tank, the tank comprising at least one top wall (4), the sealing membrane of which has a plurality of slats (15), the top wall being partially interrupted to form an opening, the tank having a lid (19) arranged in the opening, wherein the storage facility has a fastening support (26) welded to an upper bearing wall (8), the heat insulating barrier has a stop beam (40) provided on the fastening support, the fastening support comprises a stop means (33) preventing the stop beam from moving in a first direction, wherein a metal fastening plate (47) is fastened to the stop beam, the end of the or each slat interrupted by the opening is welded to the metal fastening plate, wherein a metal joining strip (24) joins the sealing wall of the lid to the metal fastening plate.
Description
Technical Field
The present invention relates to the field of storage facilities for liquefied gases, which storage facilities comprise sealed and insulated tanks with sealing membranes. In particular, the present invention relates to the field of sealed and insulated tanks for storing and/or transporting liquefied gases at cryogenic temperatures, such as tanks for transporting Liquefied Petroleum Gas (LPG) at temperatures for example between-50 ℃ and 0 ℃, or tanks for transporting Liquefied Natural Gas (LNG) at atmospheric pressure at about-162 ℃. These tanks may be mounted on land or on floating structures. In a floating structure, the tank may be used to transport liquefied gas or receive liquefied gas for use as a fuel to power the floating structure.
Background
Document FR2549575 describes a sealed and insulated tank built in a ship load-bearing structure, comprising a secondary insulating barrier, a secondary sealing film, a primary insulating barrier and a primary sealing film. The tank has a plurality of tank walls assembled together. Each sealing membrane has a plurality of parallel slats. Each of the panels has a flat central portion extending in a first direction and two raised edges disposed on both sides of the flat central portion and projecting towards the inside of the tank with respect to the central portion. Thus, the strips are juxtaposed in a repeating pattern and welded together at the edges of the projections.
The sealing membrane is secured to the load bearing structure at the corners of the can using connecting rings. Each connecting ring is thus fastened firstly to the load-bearing structure and secondly to the sealing membrane, so that forces can be transmitted between the membrane and the hull of the ship.
The connection rings are particularly able to absorb the compressive and traction forces caused by thermal shrinkage, deformations of the hull, for example associated with bending of the beam, and the filling state of the tank. In fact, such sealing films, often called stretch films, have no areas in the first direction that are capable of absorbing compressive and traction forces, unlike corrugated films.
In this type of construction, the sealing membrane is interrupted by openings, for example to enable the loading/unloading line to pass through.
In order to maintain the sealing of the can, in particular of the primary sealing membrane, a connecting region is provided at the opening.
Disclosure of Invention
The present invention is based on the following observations: in response to the phenomena that cause compressive and traction forces on the sealing membrane, the joining areas may be subjected to significant compressive and traction forces, in particular at the weld seams, which may break the seal in these areas.
One of the core ideas of the invention is to improve the resistance of the sealing membrane in the connecting region.
According to one embodiment, the invention provides a storage facility for liquefied gas, comprising a metallic load-bearing structure and a sealed and insulated tank arranged inside the load-bearing structure,
the tank having at least one metal sealing membrane forming an internal storage space and at least one thermal barrier located between the sealing membrane and a load-bearing structure,
the load-bearing structure is provided with an upper load-bearing wall,
at least one top wall of the tank is fastened to the upper bearing wall,
wherein the thermal barrier of the top wall has juxtaposed insulating blocks,
wherein the sealing membrane of the top wall comprises a plurality of parallel strips extending in a first direction, each strip comprising a flat central portion resting on the upper surface of the insulating block and two raised edges projecting towards the interior of the tank with respect to the central portion, the strips being juxtaposed in a repeated manner in a second direction perpendicular to the first direction and welded together in a sealing manner at the raised edges,
the top wall is partially interrupted to form a loading/unloading opening, which is designed for the passage of a loading/unloading line, said loading/unloading opening interrupting at least one of said slats,
wherein the tank has a lid arranged inside the loading/unloading opening, the lid having a metal sealing wall and an insulating structure between the sealing wall and an upper bearing wall, the lid being fastened to the upper bearing wall,
wherein the insulating block includes an end insulating block adjacent to the cover in the first direction.
According to one embodiment, the storage facility has a fastening support fastened to the upper load-bearing wall flush with the end insulation block, the fastening support having a seat length extending in a first direction and comprising a cap, the insulation barrier having a stop beam provided on the cap of the fastening support, the fastening support preventing the stop beam from moving in the first direction,
wherein the end of the or each strip interrupted by the loading/unloading opening is welded to the stop beam, and wherein a metal joining strip joins the sealing wall of the lid to the stop beam, to ensure the continuity of the top wall sealing membrane.
According to one embodiment, the storage facility has a fastening support fastened, preferably by welding, to an upper load-bearing wall flush with the end insulating block, the fastening support having a seat length extending in a first direction, the insulating barrier having a stop beam provided on the fastening support, the fastening support comprising a stop device preventing the stop beam from moving in the first direction.
According to one embodiment, the stop beam comprises a metal fastening plate fastened in a recess formed on the upper surface of the stop beam, wherein an end portion of the or each strip interrupted by the loading/unloading opening is welded to the metal fastening plate, and a metal joining strip joins the sealing wall of the cover to the metal fastening plate.
These features enable the traction and compression forces applied to the sealing membrane in the first direction upstream of the tie-bars to be absorbed by the load-bearing structure using the fastening supports and the stop beams. In fact, the fastening plate is fastened directly to the stop beam of the thermal insulation barrier. For example, the stop beam is prevented from moving in the first direction by the stop means of the fastening support, so that the fastening support is used to transmit a force applied to the stop beam to the load-bearing structure. The seat length of the fastening support in the first direction provides a sufficiently high stiffness in this direction.
According to embodiments, such a storage facility may have one or more of the following features.
According to one embodiment, the stop beam is made of metal and the metal stop Liang Han is attached to the cap of the fastening support.
According to one embodiment, the stop beam comprises a fastening aperture flush with the cap of the fastening support, the stop beam being welded to the cover around the entire fastening aperture.
According to one embodiment, the stop beam is made of a material having a thickness of between 0.5 × 10 -6 K -1 And 2X 10 -6 K -1 An alloy of iron and nickel with a coefficient of thermal expansion in between.
According to one embodiment, the storage facility has a plurality of fastening supports juxtaposed in the second direction along one edge of the loading/unloading opening.
According to one embodiment, two adjacent fastening supports are separated from each other by one or more end insulating blocks.
According to one embodiment, the stop beam extends lengthwise in the second direction over at least two adjacent fastening supports and widthwise in the first direction.
According to one embodiment, the thermal insulation barrier comprises a plurality of stop beams juxtaposed in the second direction, each stop beam being arranged above two adjacent fastening supports.
According to one embodiment, the sealing membrane has a connection angle iron extending in the second direction to separate the heat insulation barrier from the heat insulation structure of the cover in a sealing manner, the connection angle iron having a first flange and a second flange joined to the first flange, the first flange being joined to the stop beam and the second flange being joined to the upper bearing wall. Preferably, the first flange is welded to the fastening plate or the stop beam.
According to one embodiment, the tie bar has at least one corrugation extending in the second direction.
As a result, the corrugations can absorb the residual traction and compression forces applied to the web that are not absorbed by the fastened supports. In fact, the bellows portion is elastically deformed by opening and closing without applying stress to the welded portion.
According to one embodiment, the bellows protrudes towards the inner space of the can.
According to one embodiment, the corrugations protrude towards the upper load bearing wall.
According to one embodiment, the tie-bar has at least two parallel corrugations extending in the second direction, preferably three parallel corrugations.
According to several embodiments, the tie bars are welded to the connecting angle-bars, the stop beams and/or to the fastening plates arranged on the stop beams.
According to one embodiment, the stop beam has: a first seat, such as a first slot, extending in a second direction; and a second seat, e.g., a second slot, extending in the second direction, the stop arrangement including a first stop positioned in the first seat, e.g., the first slot, in contact with a wall of the first seat, e.g., the first slot, the first stop preventing the stop beam from moving in the first direction in the first orientation, the stop arrangement having a second stop positioned in the second seat, e.g., the second slot, in contact with a wall of the second seat, e.g., the second slot, the second stop preventing the stop beam from moving in the first direction in a second orientation opposite the first orientation.
According to one embodiment, the stop means is vertically aligned with the fastening plate.
This minimizes bending moments when compressive and tractive forces are transferred from the fastening plate to the fastening support.
According to one embodiment, the sealing membrane, the sealing wall of the lid and/or the tie-strip are made of a metal having a low coefficient of expansion, for example between 0.5 x 10 -6 K -1 And 2X 10 -6 K -1 An alloy of iron and nickel with a coefficient of thermal expansion in between. A material having a thickness of about 7 x 10 may also be used -6 K -1 Typical coefficients of expansion of iron and manganese.
According to one embodiment, the fastening support is made of steel, for example carbon steel or stainless steel.
According to one embodiment, the stop beam is made of plywood.
According to one embodiment, the load-bearing structure has a rear cofferdam wall and a front cofferdam wall, positioned on both sides of the tank in the first direction, the loading/unloading opening being formed close to one of the cofferdam walls, for example close to the rear cofferdam wall, the fastening support being positioned between the cover and the other cofferdam wall, for example the front cofferdam wall.
According to one embodiment, the end insulating block is positioned between the cover and another cofferdam wall, for example a front cofferdam wall.
Thus, the fastening support and the stopper beam are able to absorb the compressive and traction forces from the majority of the sealing membrane of the top wall, i.e. on the portion between the cover and the front weir wall.
According to one embodiment, the edge of the loading/unloading opening, along which the plurality of fastening supports are juxtaposed, is a front longitudinal end edge of the loading/unloading opening, which is located between the cover and the front weir wall in the first direction.
According to one embodiment, the sealing membrane is a primary sealing membrane designed to come into contact with the liquefied gas, the thermal insulation barrier is a primary thermal insulation barrier, and wherein the tank further comprises, in the thickness direction, from the outside towards the inside of the tank: a secondary thermal barrier secured to the load bearing structure; and a metal secondary sealing film disposed between the secondary thermal barrier and the primary thermal barrier.
The secondary sealing film and/or the primary sealing film can be manufactured in different ways. According to one embodiment, the secondary sealing film and/or the primary sealing film of the top wall has a plurality of parallel slats extending in the first direction, each slat having: a flat central portion of the secondary insulation block thermal insulation barrier and/or the primary insulation block of the primary insulation barrier, respectively; and two raised edges projecting towards the interior of the tank with respect to the central portion, the strips being juxtaposed in a repeated manner in the second direction and welded together in a sealed manner at the raised edges. Preferably, the welding is performed using anchoring flanges anchored to the secondary insulating block or to the primary insulating block parallel to the first direction and arranged between juxtaposed slats to retain the secondary sealing film on the secondary insulating barrier or the primary sealing film on the primary insulating barrier.
According to one embodiment, the connection angles are primary connection angles, the secondary sealing membrane comprises secondary connection angles to separate the secondary insulation barrier in a sealed manner from the insulation structure of the lid, the secondary connection angles comprise a first flange and a second flange connected to the first flange, the first flange of the secondary connection angles is welded to the secondary sealing membrane or to an intermediate portion fastened to the secondary sealing membrane, and the second flange of the secondary connection angles is welded to the upper bearing wall.
According to one embodiment, the second flange of the primary connection angle is welded to the second flange of the secondary connection angle.
According to one embodiment, the fastening support comprises a secondary support portion welded to the upper bearing wall and a primary support portion welded to the secondary support portion, the stop beam being arranged on the primary support portion, the secondary sealing membrane being welded directly to the secondary support portion or through the intermediate portion to the secondary support portion.
According to one embodiment, a dimension of the primary support portion in the first direction is smaller than a dimension of the stopper beam in the first direction, e.g. a dimension of the primary support portion in the first direction is smaller than half of the dimension of the stopper beam in the first direction.
According to one embodiment, one dimension of the primary support section in the first direction is smaller than a dimension of the secondary support section in the first direction.
Since the primary support section is a metal element that partially penetrates the primary thermal insulation barrier in the thickness direction, it is advantageous to limit the size of the primary support section to limit the thermal bridge between the interior space and the exterior of the tank, while keeping the support section large enough to absorb forces.
According to one embodiment, the spacing between two adjacent fastening supports in the second direction is an integer multiple of the dimension of the slats in the second direction, e.g. the spacing between two adjacent fastening supports in the second direction is equal to the dimension of two slats in the second direction.
According to one embodiment the dimension of the slats in the second direction is 500mm.
According to one embodiment, the sealing wall of the lid has a plurality of flat metal plates welded to each other, the sealing wall having a plurality of apertures designed for the passage of the loading/unloading lines.
According to one embodiment, the thickness of the end of the or each slat welded to the metal fastening plate or the metal stop beam is greater than the thickness of the slat remote from the loading/unloading opening.
The thickness is a dimension measured in a thickness direction, i.e., a direction perpendicular to the first direction and the second direction.
According to one embodiment, the thickness of the end portion is equal to or greater than 1.5mm. The thickness of the slats from the ends may be less than 1mm, for example between 0.7mm and 1mm.
According to one embodiment, the flat plate of the sealing wall of the lid has a thickness of 1.5mm.
According to one embodiment, the thickness of the tie strip is equal to or less than 1.5mm, preferably the thickness of the tie strip is 1mm.
According to one embodiment, the thickness of the stop beam is equal to or greater than 50mm.
According to one embodiment, the seat length of the secondary support portion in the first direction is equal to or greater than 300mm.
According to one embodiment, the seat length of the primary support portion in the first direction is between 100mm and 200mm, for example the seat length of the primary support portion in the first direction is 165mm.
According to one embodiment, the storage facility comprises a bellows cap welded to at least one end of the bellows to close said end, said end of the bellows being positioned at one end of the tie bar, the bellows cap and the end of the tie bar being positioned away from the loading/unloading opening.
According to one embodiment, the invention provides a storage facility for liquefied gas, comprising a metallic load-bearing structure and a sealed and insulated tank arranged inside the load-bearing structure,
the tank having at least one metal sealing membrane forming an internal storage space and at least one heat insulating barrier located between the sealing membrane and a load bearing structure,
the load-bearing structure has an upper load-bearing wall,
the tank has at least one top wall fastened to an upper load-bearing wall,
wherein the thermal barrier of the top wall has juxtaposed insulating blocks,
wherein the sealing membrane of the top wall comprises a plurality of parallel strips extending in a first direction, each strip comprising a flat central portion resting against the insulating block and two raised edges projecting towards the interior of the tank with respect to the central portion, the strips being juxtaposed in a repeated fashion in a second direction perpendicular to the first direction and welded together in a sealing manner at the raised edges,
the top wall is partially interrupted to form a loading/unloading opening, which is designed for the passage of a loading/unloading line, said loading/unloading opening interrupting at least one of the slats,
wherein the tank has a lid arranged inside the loading/unloading opening, the lid having a metal sealing wall and an insulating structure between the sealing wall and an upper bearing wall, the lid being fastened to the upper bearing wall,
wherein a metal tie bar joins the sealing wall of the lid to the end portion of the or each panel interrupted by the loading/unloading opening to ensure the continuity of the sealing film of the top wall, the metal tie bar having at least one corrugation extending in the second direction,
and wherein the storage facility comprises a bellows cap welded to at least one end of the bellows to close said end, said end of the bellows being located at one end of the tie bar, the bellows cap and the end of the tie bar being located remote from the loading/unloading opening.
Thus, the traction and compression forces applied to the sealing membrane in the first direction upstream of the tie strip are at least partially absorbed by the deformation of the at least one corrugation. In fact, the bellows portion is elastically deformed by opening and closing without stressing the surrounding weld. Furthermore, the end of the bellows and the positioning of the bellows cap away from the loading/unloading opening help to limit the force of welding on the bellows cap.
The expression "arranged away from the loading/unloading opening" means in this context that the mentioned element is positioned at a distance from the loading/unloading opening which is not zero in at least one direction, in this case preferably in the second direction.
According to one embodiment, each end of the bellows is closed by a bellows cap.
According to one embodiment, the bellows protrudes towards the inner space of the can.
According to one embodiment, the corrugations protrude towards the upper load bearing wall.
According to one embodiment, the tie-bar has at least two parallel corrugations extending in the second direction, preferably three parallel corrugations.
According to one embodiment, the bellows caps of a given end are joined together or separated from each other.
According to one embodiment, the or each bellows cap or the support of the or each bellows cap is welded to a web which is partially interrupted by the loading/unloading opening, said partially interrupted web being positioned along one transverse end edge of the loading/unloading opening, which transverse end edge extends in the first direction.
Such a storage facility may be part of an onshore storage facility, for example for storing LNG, or a coastal or deepwater floating structure, in particular a liquefied natural gas carrier, a Floating Storage and Regasification Unit (FSRU), a floating production, storage and offloading (FPSO) unit, etc. The installation can also be used as a fuel tank for any type of vessel.
According to one embodiment, the storage facility is made in the form of a floating structure, wherein the load-bearing structure is formed by the hulls of the floating structure. According to one embodiment, the first direction is a longitudinal direction of the floating structure.
According to one embodiment, the floating structure is a vessel for transporting cold liquid products, the vessel having a catamaran hull and the aforementioned tanks arranged in the catamaran hull.
The present invention also provides, according to one embodiment, a delivery system for a cold liquid product, the system comprising: the above-mentioned boat; an isolation pipe arranged to connect a tank installed in the hull of a vessel to a land or floating storage facility; and a pump for transporting the stream of cold liquid product from the onshore or floating storage facility to the tank onboard the vessel through the insulated pipe, or for transporting the stream of cold liquid product from the tank onboard the vessel to the onshore or floating storage facility through the insulated pipe.
According to one embodiment, the invention also provides a method for loading onto or unloading from such a vessel, wherein the cold liquid product is conducted from an onshore or floating storage facility to a tank on the vessel through an insulated pipe, or wherein the cold liquid product is conducted from a tank on the vessel to an onshore or floating storage facility through an insulated pipe.
Drawings
The invention will be better understood and additional objects, details, features and advantages thereof will be more clearly elucidated in the following detailed description of several specific embodiments of the invention, given by way of non-limiting example only, and with reference to the accompanying drawings.
Fig. 1 is a schematic view of a vessel comprising a storage facility.
Fig. 2 is a schematic partial cross-sectional view of a storage facility comprising a cover according to a first embodiment, said view corresponding to detail II in fig. 1.
Fig. 3 is a partial perspective view from inside the top wall in the area close to the lid according to the first embodiment, showing only the fastening support and the secondary sealing membrane.
Fig. 4 is a partial perspective view of the top wall of fig. 3 in an assembled state.
Fig. 5 is an exploded view of the stop beam, the bridge plate and the second stop of the top wall in fig. 4.
Fig. 6 is an enlarged side view of detail VI of fig. 4, particularly showing the stop arrangement and the stop beam.
Fig. 7 is an enlarged perspective view of detail VI in fig. 4, showing the fastening of the stop beam to the fastening support.
Fig. 8 is a perspective view showing the junction between two adjacent stop beams and a bridge plate in the top wall in fig. 4.
Fig. 9 is a partial perspective view from inside the top wall in the area close to the lid, particularly showing the tie-bars and fastening supports according to the second embodiment.
Fig. 10 is a partial perspective view from inside the top wall in the area close to the cover, particularly showing the stop beam fastened to the fastening support according to a third embodiment.
Fig. 11 is a partial perspective view from inside the top wall in the area close to the lid, particularly showing the secondary sealing membrane and the fastening support according to the fourth embodiment before fastening the primary cap.
Fig. 12 is a partial perspective view from inside the top wall in the area close to the lid, particularly showing the secondary sealing film and the fastening support according to the fourth embodiment after fastening the primary cap.
Fig. 13 is a perspective view of a fastening support according to a fourth embodiment fastened to an upper load-bearing wall of a ship.
Fig. 14 is a detailed view of a stopper beam fastened to a fastening support according to a fourth embodiment.
Fig. 15 is a side view of a primary support portion between two primary end insulating blocks according to a fourth embodiment.
Fig. 16 is a perspective view of a fastening supporter according to another modification of the fourth embodiment.
Fig. 17 is a side view of the fastening supporter shown in fig. 15.
Fig. 18 is a perspective view of a fastening support according to another variant of the fourth embodiment fastened to the upper bearing wall of the ship.
Fig. 19 is a perspective view from inside the top wall in the area near the cap, showing the end of the tie strip fastened to the primary sealing film.
Fig. 20 is a schematic cross-sectional view of a tank in an lng carrier and a loading/unloading terminal for the tank.
Detailed Description
By convention, "above" or "upper" refers to the position closest to the interior of the tank, and "below" or "lower" refers to the position closest to the load bearing structure of the vessel, regardless of the orientation of the tank walls relative to the earth's gravitational field. Thus, fig. 3-18 are shown in an inverted orientation relative to their actual position in the storage facility.
Fig. 1 shows an lng carrier 70 for storing and transporting liquefied gas. However, the invention is not limited to this type of vessel.
Thus, the vessel 70 shown in fig. 1 comprises a storage facility 1 with four tanks 71, said four tanks 71 being arranged in a load-bearing structure 2 formed by and fastened to the inner hull of the vessel 70. Each tank 71 is polyhedral and has a plurality of tank walls assembled together to form the inner space 3, and in particular a top wall 4, a rear cofferdam wall 5 and a front weir wall 6. The front and rear cofferdam walls 6, 5 are spaced apart in the longitudinal direction L of the vessel 70 and the upper portions of the front and rear cofferdam walls 6, 5 are fastened to the top wall 4. In order to operate these tanks 71 properly, a loading/unloading opening 7 is provided in the top wall 4 to enable the passage of a loading/unloading line. The top wall 4 is fastened to an upper load-bearing wall 8 of the load-bearing structure 2. The upper load bearing wall 8 is further provided with an aperture 9 to enable the loading/unloading line to pass through the load bearing structure 2.
The loading/unloading opening 7 is the entry point for various LNG processing equipment such as filling lines, emergency pumping lines, unloading lines coupled to unloading pumps, injection lines, feed lines coupled to injection pumps, etc. The operation of such equipment is known.
Figure 2 is a schematic view of the dihedral angle formed by the assembly of top wall 4 and rear cofferdam wall 5. In practice, the loading/unloading opening 7 is provided in the top wall 4 close to the rear cofferdam wall 5.
The multilayer structure of the top wall 4 is described in more detail below.
The multilayer structure of the top wall 4 of the sealed and insulated tank 71 for storing liquefied gas such as Liquefied Natural Gas (LNG) has the following arranged successively in the thickness direction from the outside toward the inside of the tank: a secondary insulating barrier 10 fastened to the upper bearing wall 8; a secondary sealing film 11 bearing against the secondary insulating barrier 10; a primary insulating barrier 12 bearing against the secondary sealing film 11; and a primary sealing membrane 13 resting on the primary insulating barrier 12, the primary sealing membrane 13 being designed to come into contact with the liquefied natural gas contained in the tank 71.
The secondary insulation barrier 10 has a plurality of secondary insulation blocks 14, the plurality of secondary insulation blocks 14 being anchored to the upper load bearing wall 8 using anchoring means (not shown). The secondary insulating blocks 14 have a substantially parallelepiped shape and are arranged, for example, in a parallel arrangement in the longitudinal direction L and the transverse direction T perpendicular to the longitudinal direction L.
The secondary sealing film 11 of the top wall 4 has a continuous layer of metal strips 15, the metal strips 15 having raised edges. The slats 15 therefore have a flat central portion 16 resting on the secondary insulating blocks 14 of the secondary thermal insulation barrier 10, and the slats 15 also have two raised edges 17, said raised edges 17 being arranged on both sides of the flat central portion 16 in the transverse direction T and with respect to the central portion16 project towards the interior of the tank. The slats 15 are welded via the raised edges 17 of the slats 15 to parallel welding supports which are fastened in grooves formed in the surface of the secondary insulating block 14 which is in contact with the secondary sealing film 11. The strip 15 is made of
I.e. expansion coefficients typically between 1.2 x 10 -6 K -1 And 2X 10 -6 K -1 And an alloy of iron and nickel therebetween.
The primary insulating barrier 12 of the top wall 4 has a plurality of primary insulating blocks 18, which primary insulating blocks 18 are anchored to the upper bearing wall 8 using anchoring means (not shown). The primary insulating blocks 18 are generally parallelepipedic. Further, the size of primary insulating block 18 is substantially the same as the size of secondary insulating block 14, or is different from the size of secondary insulating block 14. The primary insulating blocks 18 are aligned with the secondary insulating blocks 14, or the primary insulating blocks 18 are offset from the secondary insulating blocks 14 in one or both of the longitudinal direction L and the transverse direction T.
Secondary insulating block 14 and primary insulating block 18 may be manufactured in different ways. For example, some or all of the insulation blocks are shaped as a box with a bottom plate, a cover plate and load-bearing partitions extending in the thickness direction, located between the bottom plate and the cover plate and delimiting a plurality of compartments filled with an insulating filler such as perlite, glass wool or rock wool.
In another embodiment, some or all of the secondary insulating blocks 14 and the primary insulating blocks 18 have a base plate, a cover plate, and one or more layers of insulating polymer foam sandwiched between and bonded to the base plate and the cover plate. The insulating polymer foam may in particular be a polyurethane based foam, optionally reinforced with fibres.
In another embodiment, the secondary insulation barrier 10 and/or the primary insulation barrier 12 has a secondary insulation block 14 and/or a primary insulation block 18, the secondary insulation block 14 and/or the primary insulation block 18 having at least two different types of structures, such as the two structures described above, that function according to the installation area of the secondary insulation block 14 and/or the primary insulation block 18 in the tank. An example of such A structure is provided in the publication WO-A-2019077253.
The primary sealing film 13 has a continuous layer of metal strips 15, the metal strips 15 having raised edges, the metal strips 15 being, for example, of the same type as the strips 15 of the secondary sealing film 11. The strips 15 of the primary sealing membrane 13 are welded by the raised edges 17 of the strips 15 to parallel welding supports fastened in grooves formed in the surface of the primary insulating block 18 in contact with the primary sealing membrane 13.
The primary sealing film 13 and the secondary sealing film 11 are fastened to the load-bearing structure 2 in a known manner using connection rings 55, in particular at the angle formed between the top wall 4 and the rear cofferdam wall 5. The connection ring 55 is thus fastened firstly to the load-bearing structure 2 and secondly to the sealing membranes 11, 13, so that forces can be transmitted between the sealing membranes 11, 13 and the load-bearing structure 2.
To delimit the loading/unloading opening 7, the top wall 4 is partially interrupted to allow the loading/unloading line to pass through. The sealing films 11, 13 and the thermal insulation barriers 10, 12 are thus interrupted around the entire periphery of the loading/unloading opening 7, as shown in fig. 2.
To ensure the continuity of the seal and insulation, the tank 71 has a lid 19 placed in the loading/unloading opening 7. The lid 19 has a metal sealing wall 20 and an insulating structure 21 between the metal sealing wall 20 and the upper bearing wall 8. The cover 19 is fastened to the upper bearing wall 8. The metal sealing wall 20 ensures the sealing continuity with the primary sealing film 13 of the top wall 4, while the insulating structure 21 ensures the continuity of the insulation.
As shown in particular in fig. 4, the insulating structure 21 has an insulating cover block 22, the insulating cover block 22 being for example in the form of a box having a bottom plate, a cover plate and load-bearing partitions extending in the thickness direction, located between the bottom plate and the cover plate and delimiting a plurality of compartments filled with insulating padding, such as a rigid foam insulating material. The insulating cover block 22 has a through hole (not shown) allowing the loading/unloading line to pass through.
The sealing wall 20 of the lid 19 has a plurality of flat metal plates 23 welded to each other. The sealing wall 20 also has a plurality of cover apertures (not shown) designed to be crossed by the loading/unloading lines. As shown in fig. 4, the storage facility 1 further comprises a metal joining strip 24, so that the sealing wall 20 of the lid is joined in a sealing manner to the primary sealing film 13 of the top wall 4.
The primary sealing film 13 is able to transmit to the metal tie-bars 24 the traction and compression forces associated with the working of the primary sealing film 13. These forces are particularly strong at the front longitudinal end edge 25 of the loading/unloading opening 7, which front longitudinal end edge 25 of the loading/unloading opening 7 is the edge of the loading/unloading opening 7 between the cover 19 and the front weir wall 6 in the longitudinal direction L. In fact, since the cover 19 is positioned close to the rear cofferdam wall 5, the longitudinal direction portion of the primary sealing film 13 between the cover 19 and the front cofferdam wall 6 is significantly larger than the longitudinal direction portion of the primary sealing film 13 between the cover 19 and the rear cofferdam wall, which results in the front longitudinal end edge 25 being subjected to a larger force after deformation or thermal contraction of the hull. Furthermore, these forces on the front longitudinal end edge 25 are particularly great due to the orientation of the primary sealing film 13. In practice, the primary sealing film 13 is oriented so that the flat central portions 16 of the slats 15 extend in the longitudinal direction L of the boat 70. As a result, no area capable of absorbing compressive and tensile forces is provided in this direction.
In order to lighten the metal tie strip 24, a specific support structure extending in the transverse direction T is provided along the front longitudinal end edge 25, as described below.
Fig. 3 shows in particular the assembly of the secondary sealing film 11 at the front longitudinal end edge 25 of the loading/unloading opening 7.
The storage facility 1 has a plurality of metal fastening supports 26 juxtaposed in the transverse direction T along the front longitudinal end edge 25 of the loading/unloading opening 7. Thus, the plurality of fastening supports 26 extend parallel to the metal tie bar 24.
Each fastening support 26 has a secondary support portion 27 and a primary support portion 28 welded to the secondary support portion 27. The secondary support portion 27 has a secondary cap 29 extending in the longitudinal direction, and the primary support portion 28 is welded to the secondary cap 29. The secondary cap 29 is welded to the secondary foot 30, the secondary foot 30 being anchored to the upper bearing wall 8, for example by welding. Thus, the secondary support portion 27 has a seat length, measured when fastening the secondary foot 30 to a load-bearing structure, that extends in the longitudinal direction L and provides resistance to tilting and bending in that direction. The primary support portion 28 also has a primary cap 31 extending in the longitudinal direction, and a stopper 33 described below is welded on the primary cap 31. The primary cap 31 is welded to the primary footer 32, and the primary footer 32 is welded to the secondary cap 29. The primary support portion 28 also has a seat length portion that extends in the longitudinal direction L and provides resistance to tilting and bending in that direction, measured when securing the primary foot 32 to the secondary foot 30. In the first embodiment shown in fig. 3 and the third embodiment shown in fig. 10, the secondary footer 30 and the primary footer 32 are H-section beams (sections in the thickness direction). In the second embodiment shown in fig. 9 and in particular in the fourth embodiment shown in fig. 11 and 12, the primary foot 32 is a circular section beam. Other cross sections may also be used as long as they provide a sufficient moment of inertia in the longitudinal direction L.
The secondary insulating barrier 10 has a secondary end insulating block 34. Each secondary end insulating block 34 is interposed in the transverse direction T between the secondary supporting portions 27 of two adjacent fastening supports 26. As shown in particular in fig. 3, 4 and 8, a secondary metal fastening plate 35 is fastened to the upper surface of each secondary end insulating block 34, for example by screwing or riveting.
The secondary sealing film 11 has in the transverse direction T a row of slats 15 interrupted by the front longitudinal end edge 25 of the opening 7. As shown in fig. 3, these strips 15 interrupted by the openings 7 are welded alternately to the secondary caps 29 and to the secondary metal fastening plates 35 of the secondary end insulating blocks 34, depending on the position of the strips 15 in the transverse direction T.
The secondary sealing membrane 11 also includes secondary metal connecting angle irons 36 extending in the transverse direction T. The secondary connection angle 36 has a first secondary flange 37 and a second secondary flange 38, the second secondary flange 38 being joined to the first secondary flange 37 and forming an angle with the first secondary flange 37. The first secondary flange 37 is welded alternately to the secondary cap 29 and to the secondary metal fastening plate 35 of the secondary end insulating block 34. The second secondary flange 38 is welded to the upper bearing wall 8 by an anchor plate 69 and is located between the cover 19 and the secondary support portion 27. The assembly of the slats 15 interrupted by the openings 7 and of the secondary fastening plate 35, the secondary cap 29 and the secondary connecting angle 36 ensures that the secondary sealing film 11 stops at the front longitudinal end edge 25, while maintaining the continuity of the seal, in particular with respect to the cover 19.
Fig. 4 shows the top wall 4 and the lid 19 at the front longitudinal end edge 25 of the loading/unloading opening 7 after assembly of the primary sealing film 13.
Similar to the secondary insulation barrier 10, the primary insulation barrier 12 has a primary end insulating block 39. Each primary end insulating block 39 is interposed in the transverse direction T between the primary supporting portions 28 of two adjacent fastening supports 26.
The primary insulation barrier 12 also includes a plurality of stop beams 40 juxtaposed in the transverse direction T. Each stop beam 40 is arranged above the primary support portions 28 of two adjacent fastening supports 26.
In the first and second embodiments, the stopper beam 40 is made of plywood. Further, two stopper beams 40 adjacent in the transverse direction T are commonly fastened to the primary cap 31 using a fastening device 41 shown in fig. 7.
Also in the first and second embodiments, between two adjacent stop beams 40, for assembly reasons, a bridge plate 42 is interposed in vertical alignment with the fastening means 41, so as to form, after fastening, a continuous support surface for the primary sealing membrane 13, as shown in fig. 8.
The stop beam 40 is also prevented from moving in the longitudinal direction with respect to the fastening support 26, so that stresses applied in the longitudinal direction of the stop beam 40 are transmitted directly to the load-bearing structure 2.
Thus, in the first embodiment shown in fig. 4, the primary support portion 28 has a stop means 33. The stop arrangement 33 comprises a first stop 43 welded to the primary cap 31 and a second stop 44 spaced from the first stop 43 in the longitudinal direction L, the first and second stops 43, 44 each extending in the transverse direction T, as shown in particular in fig. 6. The stopper beam 40 has a first mating groove 45 and a second mating groove 46, and both the first mating groove 45 and the second mating groove 46 extend in the transverse direction T. When assembled, the first stop 43 is positioned in the first slot 45 and contacts a sidewall of the first slot 45 to prevent the walking beam 40 from moving in the longitudinal direction L in the first orientation. Similarly, the second stop 44 is located in the second slot 46 and contacts a sidewall of the second slot 46 to prevent the walking beam 40 from moving in the longitudinal direction L in a second orientation opposite the first orientation.
During assembly, the second stop 44 is assembled after the stop beam 40 has been positioned. In fact, as shown in fig. 3, only the first stopper 43 is welded to the primary cap 31 before the stopper beam 40 is positioned. The second stop is shown in more detail in figure 5 in an exploded view, also showing the stop beam 40 and the bridge plate 42.
Therefore, during the assembly of the primary thermal insulation barrier 12 onto the secondary sealing film 11, the stop beam 40 and the second stop 44 have a specific assembly sequence, as shown in fig. 6. The stop beam 40 is first placed to position the first stop 43 in the first slot 45. The second stopper 44 is simultaneously inserted into the second groove 46 without being fastened to the primary cap 31. The stopper beam 40 is then pushed in the direction indicated by the arrow F1 to bring the first stopper 43 into contact with the first wall of the first groove 45. The stop beam 40 is then screwed to the primary cap 31 by using the fastening means 41 to fasten the stop beam. The fastening means 41 is for example a nut/bolt system provided with a clamping plate. The clamping plate is capable of transferring the tightening force of the nut/bolt system to two adjacent stop beams.
The second stopper 44 is then pushed in the direction indicated by the arrow F2 in fig. 6 to bring the second stopper 44 into contact with the second wall of the second groove 46. The first wall and the second wall, belonging to the first groove 45 and the second groove 46, respectively, in contact with the stop members 43, 44, become distant from each other. In other words, the first and second walls belonging to the first and second grooves 45 and 46, respectively, are arranged opposite to each other. Therefore, the first stopper 43 and the second stopper 44 clamp a portion of the stopper beam 40 in the longitudinal direction L, thereby absorbing all manufacturing tolerances. It is in this position that the second stop 44 is welded to the primary cap 31 by a weld 56, as shown in fig. 7. The first stop 43 is for example positioned on the end of the primary cap 31 closest to the lid 19, while the second stop 44, once fastened, is spaced apart from the first stop 43 in the longitudinal direction L. Further, as shown in fig. 7, the second stopper 44 may be offset in the lateral direction T with respect to the first stopper 43. Thus, each first stop 43 serves as a stop for two adjacent stop beams 40 positioned on a given primary cap 31, while each second stop 44 offset in the longitudinal and transverse directions with respect to the first stop 43 serves as a stop for a single stop beam 40. Thus, the stop beam 40 is rigidly supported by the fastening support 26 without any residual play in the longitudinal direction L, which makes it possible to absorb any compressive or traction forces exerted by the primary membrane during operation, without any substantial force being transmitted to the metal tie strip 24. This reduces fatigue on the metal tie bar 24, thereby increasing the useful life of the metal tie bar 24.
In the first embodiment shown in fig. 5, the second stopper 44 is an L-section beam extending in the transverse direction T. In this case, the length of the second stop 44 is substantially equal to the distance in the transverse direction T between two fastening supports 26, so that the second stop 44 extends between two adjacent fastening supports 26 and each end of the second stop 44 is welded to the primary seat 31 of one of these fastening supports 26.
The primary metal fastening plate 47 is rigidly fastened to the upper surface of the stopper beam 40, for example by screwing or riveting, as particularly shown in fig. 4 and 6. In order to maintain the flatness of the primary sealing film 13, the stopper beam 40 has a recess 48 capable of positioning the primary fastening plate 47 on the upper surface of the stopper beam 40, as shown in fig. 5 and 6.
The primary sealing film 13 has, in the transverse direction T, a row of slats 15 interrupted by the front longitudinal end edges 25 of the openings 7. As shown in fig. 4, the end portions of the slats 15 interrupted by the openings 7 are welded to the primary fastening plate 47 in the transverse direction T.
The primary sealing film 13 also includes primary metal attachment angles 49 extending in the transverse direction T. The primary connection angle 49 has a first primary flange 50 and a second primary flange 51, the second primary flange 51 being joined to the first primary flange 50 and forming an angle with the first primary flange 50. The first primary flange 50 is welded to the primary fastening plate 47. The second primary flange 51 is welded to the second secondary flange 38 of the secondary connection angle 36 and is located between the cover 19 and the primary support portion 28. The assembly of the slats 15, the primary fastening plates 47 and the primary connecting angles 49, interrupted by the openings 7 of the primary sealing film 13, ensures the continuity of the seal on the stop beam 40, in particular with respect to the cover 19.
Finally, the metal tie-bars 24 are welded, in the transverse direction T, firstly to the flat plate 23 of the sealing wall 20 of the lid 19, secondly to the primary connecting angles 49 and/or to the primary fastening plates 47, so as to ensure the seal between the primary sealing membrane 13 of the top wall 4 and the sealing wall 20 of the lid 19.
As shown in fig. 4, the metal tie strip 24 may also have at least one corrugation 54 extending in the transverse direction T to elastically absorb any deformation caused by residual compressive and traction forces in the longitudinal direction L, thereby limiting the stress on the weld. Fig. 9 shows a second embodiment in which the tie strip 24 has two corrugations 54 in parallel. One or more corrugations are located in a central portion of the metal tie strip 24 away from welds located along parallel edges of the transverse direction T.
As shown in fig. 4, support plates 52, for example made of plywood, are located on both sides of the second primary flange 51 and the second secondary flange 38 of the angle iron to provide rigidity. The support plate 52 is also located in the space between the cover 19 and the connecting angle bars 36, 49 to support the metal tie bar 24. Furthermore, the rest of the space is filled with an insulating filler 53, for example a glass wool block, extending between the support plate 52 and the upper bearing wall 8.
Fig. 10 shows a third embodiment and fig. 11 to 17 show a fourth embodiment, wherein in particular the stop beam 40 and the primary support section 28 are modified with respect to the first and second embodiments.
In fact, as shown in fig. 10 and 14, in this case the stop beam 40 is made of metal, more specifically of metal
I.e. having a value of between 0.5 x 10 -6 K -1 And 2X 10 -6 K -1 Iron and nickel alloys of thermal expansion coefficient in between. Therefore, in these embodiments, it is no longer necessary to provide the primary fastening plate 47 fastened to the upper surface of the stopper beam 40, because the primary sealing film 13 can be welded directly to the stopper beam 40. Furthermore, in these embodiments, the stopper 33 is not used to prevent the stopper beam 40 from moving. In fact, the stop beam 40 is welded directly to the primary cap 31 of the primary support portion 28, in particular so as to prevent the stop beam 40 from moving in the longitudinal direction L. The stop beam 40 may be, for example, 8mm thick.
As shown in fig. 10, in the third embodiment, the stopper beam 40 is welded to the primary cap 31 using a plurality of welds 56. In practice, each edge of the stop beam 40 is welded to the primary cap 31 over the entire transverse dimension of the primary cap 31 by means of a weld 56 flush with the primary cap 31, so that there are two welds on both sides of the stop beam 40. Furthermore, in order to strengthen the fastening, a third weld 56 is provided which is flush with the primary cap 31 in the longitudinal direction, the third weld 56 joining the first two welds to fasten the stop beam 40 over the entire dimension in the longitudinal direction of the stop beam 40. A third weld 56 is thus formed at the junction between two adjacent stop beams 40, which is made flush with the primary cap 31, first securing the adjacent stop beams 40 to each other and secondly securing the stop beams 40 to the primary cap 31.
In a fourth embodiment shown in fig. 14, the stop beam 40 has fastening apertures 57 flush with each primary cap 31. The fastening apertures 57 enable the stop beam 40 to be welded to the primary cap 31 through the circular weld 56 to minimize stress concentrations associated with the welding while uniformly fastening the stop beam 40 to the primary cap 31. Unlike the other embodiments, in the fourth embodiment, instead of the joint between two adjacent stopper beams 40 being made flush with the primary cap 31, the stopper beam 40 is continuously flush with the primary cap 31, and a single stopper beam 40 is fastened to each primary cap 31.
As described above, the third embodiment differs from the fourth embodiment in the design of the primary support portion 28. In the third embodiment, the design of the primary support section 28 is the same as the first embodiment, as shown in fig. 10, and the essential difference between these embodiments is that there is no stop means 33 fastened to the primary cap 31 in the third embodiment.
In the fourth embodiment, as shown in particular in fig. 12 and 13, the primary support portion 28 has a primary foot 32 welded to the secondary cap 29 and a primary cap 31 fastened to the primary foot 32. The primary foot 32 is made of a tubular beam 58, the tubular beam 58 extending in the thickness direction and being provided with two foot reinforcing members 59, the foot reinforcing members 59 being positioned along the tubular beam 58 in the thickness direction and on both sides thereof in the longitudinal direction L. The lower end of the foot reinforcement member 59 is welded to the secondary cap 29. These foot-reinforcing members 59 reinforce the primary foot 32, particularly with respect to forces oriented in the longitudinal direction L. The foot-like reinforcement member 59 may be a fishplate, as shown in fig. 13, and have a decreasing cross-section from the secondary cap 29 to the primary cap 31, and/or the foot-like reinforcement member 59 may be a reinforcement plate 60 welded to the base of the foot-like reinforcement member 59 flush with the secondary cap 29, the reinforcement plate 60 also being welded to the secondary cap 29.
As shown in fig. 13, the primary cap 31 includes a cylindrical portion 61 and a support plate 62 welded to the cylindrical portion 61, the support plate 62 being flat and forming a support surface of the stopper beam 40. After adjusting the orientation of the support plate 62 between the different primary support sections 28 to ensure a flat support surface for the stop beam 40, the cylindrical section 61 is welded to the cylindrical beam 58. Thus, fig. 11 shows the primary support section 28 before the primary cap 31 is fastened, and fig. 12 shows the primary support section 28 after the primary cap is fastened.
Fig. 11 also shows the coupling 90 projecting from the secondary sealing film 11 in the transverse direction T close to the primary support portions 28 and between the primary support portions 28. In order to insert the primary end insulating block 39 between the two primary support portions 28, which are first coupled by the coupling 90 in the longitudinal direction L (of the front weir wall 6 towards the loading/unloading opening 7), it seems advantageous to provide the primary end insulating block 39 with a specific design, described in more detail with reference to fig. 15. Indeed, when assembling the tank, these couplers 90 are put in place before positioning the primary end insulating block 39.
Fig. 16 and 17 show another modification of the fourth embodiment, which differs from the modification shown in fig. 13 in the number and arrangement of reinforcing members on the fastening support 26. In fact, in this variant, there are four foot-like reinforcing members 59 positioned in pairs on both sides of the tubular beam 58 in the longitudinal direction L. Further, in this case, a reinforcement plate 60 extends between two adjacent foot reinforcement members 59, and the reinforcement plate 60 is welded to the lower portion of the foot reinforcement members 59. The reinforcing plate 60 is also welded to the secondary cap 29. Furthermore, the fastening support 26 comprises a cap reinforcing member 67 welded below the secondary cap 29 and extending in a plane orthogonal to the longitudinal direction L, as shown in particular in fig. 17. The cap stiffening members 67 thus extend between the outer face of the secondary cap 29 and the upper bearing wall 8. In the example shown, there are three such cap reinforcing members 67, however the number may vary depending on the strain imposed on the fastening support 26, and the cap reinforcing members are regularly distributed under the secondary caps 29 such that one of the cap reinforcing members 67 is vertically aligned with the tubular beam 58 and the other two cap reinforcing members 67 are vertically aligned with the foot reinforcing members 59.
Returning to fig. 13, a wall reinforcing member 63 is provided to reinforce the upper load bearing wall 8 in vertical alignment with the fastening support 26. Thus, the upper bearing wall 8 has a first wall reinforcing member 63 and a second wall reinforcing member 63, the first wall reinforcing member 63 being flush with the anchor plate 69 and projecting above the outer surface of the upper bearing wall, the second wall reinforcing member 63 being parallel to the first wall reinforcing member 63, the second wall reinforcing member 63 being positioned flush with the end of the secondary distal foot 30 of the anchor plate 69. The second wall reinforcing member 63 also projects above the outer surface of the upper bearing wall. Finally, the upper bearing wall 8 has a third reinforcing member 63 extending in the longitudinal direction L and flush with the fastening support 26.
A primary end insulating block 39 is also shown in fig. 14 and 15. The primary end insulating block 39 is thus interposed between two adjacent primary support portions 28, and the primary end insulating block 39 has bearing grooves 65 on both sides in the transverse direction T to serve as bearing points for the primary caps 31 formed by the cylindrical portions 61 and the support plates 62. In fact, as shown in fig. 15, the nut/bolt system 66 fastened to the support plate 62 bears against the bottom of the supporting groove 65, which supporting groove 65 may be reinforced, for example, with metal.
As described above and shown in fig. 14 and 15, the primary end insulating block 39 may comprise a fitting that can be inserted between the two primary support portions 28, the two primary support portions 28 being first coupled by the coupler 90. Indeed, in the embodiment shown, the bearing groove 65 of the primary end insulating block 39 is formed on the attachment rod 91. The attachment bar 91 extends in the longitudinal direction L, and after the primary end insulating block 39 is aligned in the longitudinal direction L between two adjacent primary support portions 28, the attachment bar 91 may be fastened to the primary end insulating block 39. This makes it possible to space the end insulator block 39 from the secondary sealing film 11 in the thickness direction by the dimension of the attachment bar 91 and the fastening system 66 in the thickness direction during insertion. This spacing allows passage over coupler 90 during insertion.
In an embodiment not shown, instead of or together with an attachment bar 91 for inserting the primary end insulating block 39, the primary end insulating block 39 may have a slot (not shown) extending in the longitudinal direction L in a lower region 92 aligned with the coupling 90. The slot extending in the thickness direction is dimensioned so that the end insulating block 39 can be inserted between the two primary support portions 28. The dimension is based on the dimension of the coupler 90 protruding from the secondary sealing film 11 in the thickness direction, and the presence or absence of the attachment bar 91.
Fig. 18 shows another variant of the fourth embodiment, which differs from the variant shown in fig. 13 by several features. In fact, in this variation, the tubular beam 58 has neither foot reinforcing members 59 nor reinforcing plates 60. However, the diameter of the tubular beam 58 is advantageously increased as compared to the variation in FIG. 13. Furthermore, similar to the variant in fig. 17, the fastening support 26 in this variant has two cap reinforcing members 67 welded below the secondary cap 29 and lying in a plane orthogonal to the longitudinal direction L. In the example shown in fig. 18, the cap reinforcement members 67 are vertically aligned with diametrically opposed portions of the tubular beam 58.
In addition and unlike the variant in fig. 13 and 16, in which the tubular beam 58 is fitted into the cylindrical portion 61, in the variant of fig. 18, the cylindrical portion 61 is fitted into the tubular beam 58. In each variant, the fastening between the cylindrical portion 61 and the cylindrical beam 58 may be provided by welding, by force-fitting or by any other fastening means capable of achieving a sufficiently rigid fastening.
As shown in fig. 13, 16 and 18, the secondary foot 30 has a first branch 87 formed by a plate and a second branch 88 formed by a plate separated from the first branch 87 in the longitudinal direction L by a web 99. The gap between the first branch 87 and the second branch 88, which is flush with the upper bearing wall 8 in the longitudinal direction L, is the seat length. The web 99 may be welded to the upper bearing wall 8.
The reinforcing portion 89 is welded to the upper bearing wall 8 and extends in the longitudinal direction L to be welded at a first end to an edge of the first branch 87 and at a second end to an edge of the second branch 88. In this case, the secondary foot 30 is preferably provided with two reinforcing portions 89, the two reinforcing portions 89 being positioned on either side of a web 99, the web 99 advantageously being fastened to the first and second branches 87, 88 in the middle of the web 99 in the transverse direction T, as shown in fig. 18.
In other embodiments not shown, the reinforcing portion 89 or web 99 need not be welded to the upper bearing wall 8 to advantageously facilitate the welding operation. Thus, an element that is not fastened to the upper bearing wall 8, whether it be the reinforcing portion 89 or the web 99, can be positioned away from the bearing wall 8.
In the variant shown in fig. 18, unlike the other variants in fig. 13 and 16, the web 99 has a central aperture 100, the central aperture 100 preferably being oval and extending in the longitudinal direction L to increase the flexibility of the fastening support 26.
As shown in fig. 16 to 18, the web 99 may have rounded corners 101 formed in corners of the web 99 to limit stress concentration. Similarly and as shown in fig. 18, the reinforcing portion 89 may also have a radiused portion 101 formed in the corner of the reinforcing portion 89 located at the junction between one of the legs 87, 88 and the upper load bearing wall 8.
Fig. 19 shows a tie strip 24 according to a variant, the tie strip 24 being firstly joined to the primary sealing film 13 and secondarily joined to the sealing wall 20 of the lid 19, and in particular the end 64 of the tie strip 24 being firstly joined to the primary sealing film 13 and secondarily joined to the sealing wall 20 of the lid 19. More specifically, as shown in fig. 19, the tie bar 24 is welded along a first edge to the first primary flange 50 of the primary connection angle 49, except for the end 64 of the tie bar 24. The tie strip 24 is welded along a second edge to the sealing wall 20 of the lid 19, except for the end 64 of the tie strip 24. In practice, at the end 64 of the tie-bar 24, the tie-bar 24 is welded along a first edge and along a second edge to a first longitudinal first flange 85 of a longitudinal primary connecting angle iron extending in the longitudinal direction L along the transverse end edge of the loading/unloading opening 7. This longitudinal primary connecting angle is joined to the primary connecting angle 49 at the corners of the loading/unloading opening 7 and performs the same function as the primary connecting angle 49. Again, the primary connecting angle 49 extends in the transverse direction T along the front longitudinal end edge 25 of the loading/unloading opening 7. Thus, the end 64 of the tie bar 24 is positioned away from the loading/unloading opening 7.
In this variant, the tie bar 24 has three parallel corrugations 54 extending in the transverse direction T. To close these corrugations 54, the storage facility has a corrugation cap 83 welded to the ends 64 of the tie bar and more specifically to each end 82 of the corrugations 54, as shown in fig. 19. In the exemplary embodiment shown, three bellows caps 83 are provided on a single closure plate 86, which closure plate 86 is in turn welded to a particular web 84 of a set of webs 15 of the primary sealing film 13. In practice, the slats 84 are only partially interrupted by the loading/unloading opening 7 and are positioned along the lateral end edges of the loading/unloading opening 7 extending in the longitudinal direction L. The fastening of the bellows cap 83 to the closure plate 86 helps to limit the mechanical stress applied to the bellows cap 83.
Referring to fig. 20, a cross-sectional view of an lng carrier 70 shows a sealed and insulated tank 71 having an overall prismatic shape installed in a double hull 72 of the ship. The walls of the tank 71 have a primary sealing barrier designed to be in contact with the LNG contained in the tank, a secondary sealing barrier arranged between the first sealing barrier and the double hull 72 of the ship, and two insulating barriers arranged between the first sealing barrier and the second sealing barrier and between the second sealing barrier and the double hull 72, respectively.
In a known manner, a loading/unloading pipe 73 arranged on the upper deck of the ship may be connected to a marine or harbour terminal using suitable connectors for transferring LNG cargo to or from the tanks 71.
Fig. 20 shows an example of an offshore terminal comprising a loading/unloading point 75, an underwater pipeline 76 and an onshore facility 77. The loading/unloading point 75 is a fixed offshore facility, and the loading/unloading point 75 includes a movable arm 74 and a column 78 supporting the movable arm 74. The movable arm 74 carries a bundle of flexible conduits 79 that can be connected to the loading/unloading pipe 73. The orientable moveable arm 74 may be adapted to various sizes of lng carriers. A connecting line (not shown) runs inside the column 78. The loading/unloading point 75 allows the lng carrier 70 to be loaded into an onshore facility 77 or unloaded from the onshore facility 77. The facility has a natural gas storage tank 80 and a connecting line 81 connected to the loading/unloading point 75 by an underwater line 76. The underwater pipeline 76 makes it possible to transport liquefied gas over a long distance, for example 5km, between the loading/unloading point 75 and the onshore facility 77, which makes it possible to keep the lng carrier 70 far offshore in the loading and unloading operations.
To generate the pressure required to transport the liquefied gas, pumps onboard the vessel 70 are used, and/or pumps fitted in onshore facilities 77, and/or pumps fitted in the loading/unloading point 75.
Although the invention has been described in connection with a number of specific embodiments, it is obvious that the invention is by no means limited to these embodiments and that the invention comprises all technical equivalents of the means described and their combinations if they fall within the scope of the invention.
Use of the verb "comprise" or "comprise" to comprise in conjunction does not exclude the presence of elements or steps other than those stated in a claim.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (22)
1. A storage facility (1) for liquefied gas, the storage facility (1) comprising a metallic load-bearing structure (2) and a sealed and insulated tank (71) arranged inside the load-bearing structure,
the tank having at least one metallic sealing membrane (11, 13) and at least one heat-insulating barrier (10, 12), the metallic sealing membrane (11, 13) forming an internal storage space (3), the heat-insulating barrier being located between the sealing membrane and the load-bearing structure,
the load-bearing structure has an upper load-bearing wall (8),
at least one top wall (4) of the tank (71) being fastened to the upper load bearing wall (8), wherein the heat insulating barrier (10, 12) of the top wall has juxtaposed insulating blocks (14, 18),
wherein the sealing membrane (11, 13) of the top wall (4) comprises a plurality of parallel battens (15) extending along a first direction (L), each batten (15) comprising a flat central portion (16) resting on the upper surface of the insulating block (14, 18) and two raised edges (17) projecting towards the inside of the tank with respect to the central portion (16), the battens (15) being juxtaposed in a repetitive manner along a second direction (T) and welded together in a sealed manner at the raised edges, the second direction (T) being perpendicular to the first direction (L),
the top wall (4) being locally interrupted to form a loading/unloading opening (7), the loading/unloading opening (7) being designed for a loading/unloading line to pass through, the loading/unloading opening (7) interrupting at least one of the slats (15),
wherein the tank has a lid (19) arranged inside the loading/unloading opening (7), the lid (19) having a metal sealing wall (20) and an insulating structure (21) between the sealing wall (20) and the upper bearing wall (8), the lid (19) being fastened to the upper bearing wall (8),
wherein the insulating blocks comprise end insulating blocks (34, 39) adjacent to the cover (19) in the first direction,
wherein the storage facility has a fastening support (26), the fastening support (26) being fastened to the upper load-bearing wall (8) flush with the end insulation blocks (34, 39), the fastening support (26) having a seat length extending in the first direction and comprising a cap (31), the insulation barrier having a stop beam (40) provided on the cap (31) of the fastening support (26), the fastening support (26) preventing the stop beam (40) from moving in the first direction,
wherein an end portion of the or each slat (15) interrupted by the loading/unloading opening (7) is welded to the stop beam (40),
and wherein a metal joining strip (24) joins the sealing wall (20) of the lid (19) to the stop beam (40) to ensure continuity of the sealing membrane of the top wall (4).
2. Storage facility (1) according to claim 1, wherein the fastening support (26) comprises a stop arrangement (33) preventing the stop beam (40) from moving in the first direction.
3. Storage facility (1) according to claim 2, wherein the stop beam (40) has a first groove (45) extending in the second direction and a second groove (46) extending in the second direction, the stop device (33) comprising a first stop (43), the first stop (43) being located in the first groove (45) in contact with a wall of the first groove (45), the first stop (43) preventing the stop beam (40) from moving in the first direction in a first orientation, the stop device (33) having a second stop (44), the second stop (44) being located in the second groove (46) in contact with a wall of the second groove (46), the second stop (44) preventing the stop beam (40) from moving in the first direction in a second orientation opposite to the first orientation.
4. Storage facility (1) according to any of claims 1 to 3, wherein the stop beam (40) comprises a metal fastening plate (47) provided on an upper surface of the stop beam (40), and wherein an end portion of the or each slat (15) interrupted by the loading/unloading opening (7) is welded to the metal fastening plate (47), the metal joining strip (24) joining the sealing wall (20) of the cover (19) to the metal fastening plate (47).
5. Storage facility (1) according to claim 1, wherein the stop beam (40) is made of metal, preferably the stop beam (40) is made of metal having a thickness of between 0.5 x 10 -6 K -1 And 2X 10 -6 K -1 Of iron and nickel with a coefficient of thermal expansion in between, the metal stop beam (40) being welded to the cap (31) of the fastening support (26).
6. Storage facility (1) according to claim 5, wherein the stop beam (40) comprises a fastening aperture (57) flush with the cover (31) of the fastening support (26), the stop beam (40) being welded to the cover (31) around the entire fastening aperture (57).
7. Storage facility (1) according to any of claims 1 to 6, wherein the storage facility (1) comprises a plurality of fastening supports (26) juxtaposed in the second direction along the edge of the loading/unloading opening (7), two adjacent fastening supports (26) being separated from each other by at least one end insulating block (34, 39).
8. Storage facility (1) according to claim 7, wherein the stop beam (40) extends lengthwise over at least two adjacent fastening supports in the second direction and widthwise in the first direction.
9. Storage facility (1) according to claim 8, wherein the insulation barrier comprises a plurality of stop beams (40) juxtaposed in the second direction, each stop beam (40) being arranged above two adjacent fastening supports (26).
10. Storage facility (1) according to any of claims 1 to 9, wherein the sealing membrane (13) has a connection angle iron (49) extending in the second direction to separate the insulation barrier (10, 12) from the insulation structure (21) of the cover in a sealed manner, the connection angle iron (49) having a first flange (50) and a second flange (51) joined thereto, the first flange (50) being joined to the stop beam (40) and the second flange (51) being joined to the upper bearing wall (8).
11. Storage facility (1) according to any of claims 1 to 10, wherein the tie bar (24) has at least one corrugation (54) extending in the second direction.
12. Storage facility (1) according to claim 11, wherein the storage facility (1) comprises a bellow cap (83), the bellow cap (83) being welded to at least one end (82) of the bellow (54) to close the end (82), the end (82) of the bellow (54) being positioned at one end (64) of the tie bar (24), the bellow cap (83) and the end (64) of the tie bar (24) being positioned away from the loading/unloading opening (7).
13. Storage facility (1) according to claim 12, wherein the bellows caps are welded to slats (84) partially interrupted by the loading/unloading opening (7), the partially interrupted slats (84) being located along one transversal end edge of the loading/unloading opening (7), which transversal end edge extends in the first direction (L).
14. Storage facility (1) according to any of claims 1 to 13, wherein the sealing membrane (13), the sealing wall (20) of the lid and the tie bar (24) are made of a material having a thickness of between 0.5 x 10 -6 K -1 And 2X 10 -6 K -1 Of iron and nickel with a coefficient of thermal expansion in between, and wherein the fastening support (26) is made of steel.
15. Storage facility (1) according to any of claims 1-14, wherein the load bearing structure has a rear cofferdam wall (5) and a front cofferdam wall (6) positioned on both sides of the tank in the first direction, the loading/unloading opening being formed close to the rear cofferdam wall (5), the fastening support (26) being positioned between the cover (19) and the front cofferdam wall (6).
16. The storage facility (1) according to any one of claims 1 to 15, wherein the sealing membrane is a primary sealing membrane (13) designed to be in contact with the liquefied gas, the thermal insulation barrier is a primary thermal insulation barrier (12), and wherein the tank further comprises, in the thickness direction, from the outside towards the inside of the tank: a secondary thermal insulation barrier (10) fastened to the load-bearing structure (2); and a metal secondary sealing film (11) disposed between the secondary thermal insulation barrier (10) and the primary thermal insulation barrier (12).
17. Storage facility (1) according to claim 16 when dependent on claim 10, wherein the connection angle is a primary connection angle (49), the secondary sealing membrane (11) comprises a secondary connection angle (36) to separate the secondary insulation barrier in a sealed manner from the insulation structure of the cover, the secondary connection angle comprises a first flange (37) and a second flange (38) joined to the first flange, the first flange (37) of the secondary connection angle is welded to the secondary sealing membrane (11), and the second flange (38) of the secondary connection angle is welded to the upper bearing wall (8).
18. Storage facility (1) according to claim 17, wherein the second flange (51) of the primary connection angle-bar is welded to the second flange (38) of the secondary connection angle-bar.
19. Storage facility (1) according to any of claims 16 to 18, wherein the fastening support (26) comprises a secondary support portion (27) welded to the upper bearing wall (8) and a primary support portion (27) welded to the secondary support portion (27), the stop beam (40) being provided on the primary support portion (28), the secondary sealing membrane (11) being welded to the secondary support portion (27).
20. Storage facility (1) according to any one of claims 1 to 19, the storage facility (1) being in the form of a floating structure, wherein the load bearing structure comprises double hulls (72) of the floating structure, and wherein the first direction is a longitudinal direction (L) of the floating structure, preferably the floating structure is a vessel (70) for transporting cold liquid products.
21. A delivery system for a cold liquid product, the system comprising: the storage facility of claim 20; isolation pipes (73, 79, 76, 81), the isolation pipes (73, 79, 76, 81) being arranged to connect the tanks (71) installed in the hull of the vessel to an external onshore or floating storage facility (77); and a pump for transporting a stream of cold liquid product from the external onshore or floating storage facility to the tank on the vessel through the insulated pipe, or for transporting a stream of cold liquid product from the tank on the vessel to the external onshore or floating storage facility through the insulated pipe.
22. A method for loading or unloading a storage facility according to claim 20, wherein cold liquid product is led from an external onshore or floating storage facility (77) to the tanks on the vessel (71) through insulated pipes (73, 79, 76, 81), or cold liquid product is led from the tanks on the vessel (71) to an external onshore or floating storage facility (77) through insulated pipes (73, 79, 76, 81).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2100313A FR3118796B1 (en) | 2021-01-13 | 2021-01-13 | Storage facility for liquefied gas |
| FRFR2100313 | 2021-01-13 | ||
| FRFR2104737 | 2021-05-05 | ||
| FR2104737A FR3118795B1 (en) | 2021-01-13 | 2021-05-05 | Storage facility for liquefied gas |
| PCT/EP2022/050650 WO2022152794A1 (en) | 2021-01-13 | 2022-01-13 | Storage facility for liquefied gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115210494A true CN115210494A (en) | 2022-10-18 |
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ID=79927244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280001709.6A Pending CN115210494A (en) | 2021-01-13 | 2022-01-13 | Storage facility for liquefied gas |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102622457B1 (en) |
| CN (1) | CN115210494A (en) |
| WO (1) | WO2022152794A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2549575B1 (en) | 1983-07-18 | 1985-11-08 | Gaz Transport | WATERPROOF AND INSULATED VESSEL TANK, PARTICULARLY FOR THE TRANSPORT OF LIQUEFIED NATURAL GAS |
| KR101325706B1 (en) * | 2011-12-16 | 2013-11-06 | 삼성중공업 주식회사 | Pump tower installation structure of lng storage tank |
| KR101412488B1 (en) * | 2012-11-08 | 2014-07-04 | 삼성중공업 주식회사 | Pump tower installation structure of lng storage tank, and method for manufacturing the same |
| KR102569466B1 (en) * | 2016-12-23 | 2023-08-22 | 한화오션 주식회사 | Insulation box fixing system and fixing method including liquid dome chair |
| KR102595977B1 (en) * | 2017-01-17 | 2023-10-31 | 한화오션 주식회사 | Liquid dome box of membrane type liquefied natural gas cargo insulation system and sealing method thereof |
| WO2019077253A1 (en) | 2017-10-20 | 2019-04-25 | Gaztransport Et Technigaz | Sealed and thermally insulating tank with several areas |
| KR102082501B1 (en) * | 2018-08-29 | 2020-02-28 | 현대중공업 주식회사 | Liquid cargo storage tank and marine structure including the same |
-
2022
- 2022-01-13 CN CN202280001709.6A patent/CN115210494A/en active Pending
- 2022-01-13 KR KR1020227018533A patent/KR102622457B1/en active IP Right Grant
- 2022-01-13 WO PCT/EP2022/050650 patent/WO2022152794A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022152794A1 (en) | 2022-07-21 |
| KR20220104179A (en) | 2022-07-26 |
| KR102622457B1 (en) | 2024-01-09 |
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