CN111350939B - Anchoring system for sealed insulated tanks - Google Patents

Anchoring system for sealed insulated tanks Download PDF

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Publication number
CN111350939B
CN111350939B CN201911276439.6A CN201911276439A CN111350939B CN 111350939 B CN111350939 B CN 111350939B CN 201911276439 A CN201911276439 A CN 201911276439A CN 111350939 B CN111350939 B CN 111350939B
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China
Prior art keywords
primary
wall
thermal insulation
tank
base
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CN201911276439.6A
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Chinese (zh)
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CN111350939A (en
Inventor
穆罕默德·萨西
塞巴斯蒂安·德拉诺
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Gaztransport et Technigaz SA
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Gaztransport et Technigaz SA
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    • 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 
    • 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
    • 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
    • B63B73/40—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 
    • 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
    • B63B73/49—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods by means of threaded members, e.g. screws, threaded bolts or nuts
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • 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
    • 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
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • F17C3/06—Vessels not under pressure with provision for thermal insulation by insulating layers on the inner surface, i.e. in contact with the stored fluid
    • 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
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/14—Conveying liquids or viscous products by pumping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B63B2221/02—Methods and means for joining members or elements by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B63B2221/08—Methods and means for joining members or elements by means of threaded members, e.g. screws, threaded bolts or nuts
    • 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • 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
    • F17C2203/0333—Polyurethane
    • 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
    • F17C2203/0345—Fibres
    • F17C2203/035—Glass wool
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F17C2203/0651—Invar
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0355—Insulation thereof
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • 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
    • F17C2270/0134—Applications for fluid transport or storage placed above the ground

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

Abstract

The invention relates to a sealed insulating wall for a tank for storing liquids, incorporated in a load-bearing structure, the tank comprising a secondary insulating block and a primary insulating block anchored to the secondary insulating block by means of a primary anchoring system (97), the primary anchoring system (97) comprising a base (300) fixed to a cover plate, and a mobile part (302) maintained on the base (300) in the direction of the wall thickness and movable in the base (300), the mobile part (302) comprising a threaded hole (304), the threaded hole (304) opening out on the upper surface of the mobile part (302), the upper surface of the mobile part (302) being flush with the upper surface of the cover plate (7), the mobile part being mounted in the base and free to translate parallel to the longitudinal direction of the welding flange.

Description

Anchoring system for sealed insulated tanks
Technical Field
The invention relates to the field of manufacturing of sealed heat-insulating tanks. In particular, the present invention relates to a tank for containing a cryogenic or a high temperature liquid, and more particularly to a tank for storing and/or transporting liquefied gases by sea.
The sealed insulated tank may be used to store low or high temperature products. For example, liquid such as Liquefied Natural Gas (LNG) may be stored at atmospheric pressure (about-163 ℃) in an onshore storage tank or a storage tank carried on a floating structure.
Background
Storage tanks on lng carriers typically include a double wall consisting of a primary sealing membrane, a primary insulating barrier, a secondary sealing membrane and a secondary insulating barrier in that order from the tank to the outside.
Patent application FR 2 985 560 describes a sealed insulating tank in which the primary and secondary insulating barriers are produced in the form of primary and secondary insulating blocks juxtaposed respectively. The secondary insulating block comprises a cover plate forming a support surface for the secondary sealing membrane. The primary insulation block is secured to the secondary insulation block by an anchoring system. The anchoring system comprises, on the one hand, a circular mounting plate covered by a circular projection centred on the mounting plate. The circular mounting plate is pressed against the counter-bore of the cover plate with the protrusion extending through the cover plate until flush with the upper surface of the cover plate. The anchoring system further comprises a cylindrical cavity through the thickness of the projection, the inner bearing surface of which is threaded. The cylindrical cage is screwed in the thread so as to close the oblong nut previously placed in the cylindrical cavity. The retainer and the projection are flush with the upper surface of the cover plate so as to continuously support the secondary sealing film over the entire upper surface of the insulating secondary barrier. The rectangular nut and cage then form a slideway. The rectangular slots are parallel to the longitudinal direction of the vessel in order to reduce the concentrated pressure in the secondary beams when the elements of the tank are thermally contracted or when the beams of the vessel are bent under the influence of expansion.
However, the anchoring systems proposed above are not entirely satisfactory. Specifically, the threads of the oblong nut are not flush with the upper surface of the cover plate. This means that there is a certain difficulty in mounting the flange studs, which must be inserted through the holes in the sealing membrane into the threads of the rectangular nut. Furthermore, the cage is screwed, which leads to many inaccuracies in the direction of the degrees of freedom. This may also have an effect on creating a concentrated pressure on the secondary sealing barrier.
Patent application FR 2 887 010 also describes a sealed insulating tank in which the primary and secondary insulating barriers are produced in the form of juxtaposed primary and secondary insulating blocks, respectively. Each secondary insulating block comprises a cover plate forming a support face for the secondary sealing membrane. An anchoring device allows a primary insulation block to be anchored to four adjacent secondary insulation blocks. The anchor functions like a square mounting plate with cut corners. The cover plate has a housing so that the mounting plate is positioned in and secured to four housings of four adjacent secondary insulation blocks. The cover plate includes a counterbore located at the periphery of the housing and in which the baffle is located so as to be flush with the upper surface of the cover plate. The baffle includes holes that allow the baffle to be secured to the cover plate using set screws. In addition, the mounting plate includes a central boss that is flush with the upper surfaces of the baffle and cover plates. Thus, the secondary sealing film is located on the flat surface. The mounting plate also includes a cylindrical bushing that projects on the opposite side of the boss and has a threaded bore. The secondary sealing membrane is pierced to allow the passage of a stud, which serves to anchor the primary insulating block. The stud includes a threaded lower portion that is threaded into the threaded bore.
The anchoring systems proposed above are not entirely satisfactory, since the mounting plate fixing means allow the plate to have a translational degree of freedom and also risk exerting a concentrated pressure on the secondary sealing membrane. Furthermore, the plurality of components used to attach the mounting plate to the cover plate carries a lot of risk of creating roughness on the surface of the secondary sealing film. These roughnesses can lead to undesired wear of the sealing film.
Disclosure of Invention
It is an aspect of the present invention to provide a sealed, insulated tank wall that does not suffer from these disadvantages. It is therefore an object of the present invention to better control the flatness of the insulating barrier surface and the movement of the primary insulating blocks relative to the sealing film.
To this end, the subject of the invention is a tank wall of a sealed and thermally insulated tank for storing liquids, said tank being incorporated in a load-bearing structure, said tank wall comprising, in succession in the thickness direction of the wall, a secondary thermal barrier present on the load-bearing structure, a secondary sealing membrane resting on the secondary thermal barrier, a primary thermal barrier resting on the secondary sealing membrane and a primary sealing membrane resting on the primary thermal barrier, and wherein the secondary thermal barrier comprises a secondary thermal block comprising a cover plate forming a support surface for the secondary sealing membrane, wherein the secondary sealing membrane comprises a plurality of metal plates turned towards the interior of the tank at their edges, which metal plates are welded in pairs by their flanges on both sides of a welding flange mechanically fixed on the secondary thermal block, said welding flange being partially engaged in a slot formed in the cover plate and extending in the longitudinal direction, wherein the primary thermal barrier comprises a primary thermal block anchored to the secondary thermal block by a primary anchoring system comprising a base fixed on the cover plate and a mobile part mounted on the base in the wall thickness direction and mounted on a threaded hole in the upper face of the mobile part of the cover plate, the mobile part being able to move flush with at least the upper surface of the mobile part.
In a preferred embodiment, the moving part is mounted in the base so as to be movable parallel to the longitudinal direction of the welding flange, more particularly so as to be guided parallel to said longitudinal direction.
The threaded hole opens on the upper surface of the moving member, which is flush with the upper surface of the cover plate. Thereby making it easier to screw the component into the threaded hole afterwards.
The base is arranged in such a way that the moving part can have a longitudinal translation at least parallel to the welding flange. This makes it possible to reduce the mechanical stress on the sealing film when the insulating barrier contracts, for example when the tank cools.
The moving part is flush with the surface of the secondary insulating block, limiting the wear of the secondary sealing membrane.
According to one embodiment, the base has a bottom wall disposed below the moving member and an opening accommodating a lower portion of the moving member, the opening being defined by side walls so as to guide the moving member parallel to the longitudinal direction.
According to one embodiment, the primary anchoring system further comprises a ring configured to clamp the lower portion of the moving part with the seat.
According to one embodiment the ring has an oblong opening, whereby the moving part is guided to move in a direction parallel to the longitudinal direction of the plate.
According to one embodiment, the ring is fixed to the base by welding.
According to one embodiment, the upper part of the ring is flush with the upper surface of the cover plate.
According to one embodiment, the lower part of the moving part comprises protrusions extending divergently along the lower part.
According to one embodiment, the mobile part is placed on the upper surface of the base and has a longitudinal parallel oblong channel, and the base carries a fixing screw engaged in the oblong channel and holds the mobile part in sliding manner on said base.
According to one embodiment, the stud is provided with a threaded lower part that is screwed into the threaded hole.
According to one embodiment, the stud comprises a circular flange extending over the moving part.
According to one embodiment, the circular flange is designed to enable the secondary sealing membrane to come into contact with the moving part.
According to one embodiment, the circular flange is welded in a sealing manner at the periphery to the secondary sealing film.
According to one embodiment, the bottom wall is fixed to the lower part of the moving part by welding or welding followed by screwing.
According to one embodiment, the base has a shoulder at the level of the opening, so that the bottom wall can be in contact with the shoulder.
According to one embodiment, the primary anchoring system further comprises at least one washer and at least one nut cooperating with the threaded upper portion of the stud to maintain the washer pressed against the floor of the primary insulation block.
According to one embodiment, the cover plate includes an opening to receive the base.
According to one embodiment, the primary anchoring system comprises foam for inhibiting movement of moving parts in the anchoring system.
According to one embodiment, the primary anchoring system comprises a washer arranged between the ring and the moving part.
According to one embodiment, the gasket comprises Polytetrafluoroethylene (PTFE).
Such storage tanks may form part of a land based storage facility, e.g. for storing LNG, or may be installed in a floating, offshore or offshore structure, e.g. a methane tanker, a Floating Storage and Regasification Unit (FSRU), a floating production storage and offloading unit (FPSO) unit, etc. Such a tank may also serve as a fuel reservoir on any type of vessel.
According to one embodiment, a vessel for transporting a cryogenic liquid product comprises a double hull and the above-described tank located in the double hull.
According to one embodiment, the invention also provides a method for loading or unloading a vessel, wherein the cryogenic liquid product is transferred from or from a floating or onshore storage facility to or from a storage tank of the vessel through an insulated pipeline.
According to one embodiment, the invention also provides a transfer system for a cryogenic liquid product, the system comprising a vessel as described above, an insulated pipeline designed to connect a tank mounted in the hull to a floating or onshore storage facility, and a pump for driving the cryogenic liquid product through the insulated pipeline from the floating or onshore storage facility to the tank of the vessel or from the tank of the vessel to the floating or onshore storage facility.
Drawings
The invention will be better understood and its further objects, details, characteristics and advantages will become more apparent in the course of the following description of several particular embodiments of the invention, given by way of non-limiting illustration, with reference to the accompanying drawings.
FIG. 1 is a perspective view of a can wall with a cut surface.
FIG. 2 is an enlarged view of area I of FIG. 1, showing a secondary insulation panel that may be used in the tank wall, and also showing the primary anchoring system in one embodiment.
FIG. 3 is a perspective view of a primary insulation panel that may be used in a tank wall.
Fig. 4 is a schematic perspective view of the anchoring system in the first embodiment.
Figure 5 is a schematic perspective view with a cut-out of the anchoring system in the first embodiment.
Figure 6 is a schematic perspective view with cut-away of the anchoring system in a second embodiment.
Fig. 7 is a schematic perspective view of an anchoring system in a third embodiment.
Figure 8 is a schematic perspective view with cut-away of the anchoring system in a third embodiment.
Figure 9 is a schematic perspective view with cut-out of the anchoring system in a fourth embodiment.
FIG. 10 is a schematic perspective view with cut-away sections of the anchoring system in the fifth embodiment.
Fig. 11 is a schematic view of a stud cooperating with an anchoring system in a sixth embodiment.
FIG. 12 is a schematic view of a stud in the anchoring system.
FIG. 13 is a schematic view of an anchoring system installed in a secondary insulation block.
Fig. 14 is a cut-away view of a tank with a methane carrier and a schematic of a terminal for loading/unloading from the tank.
Detailed Description
Fig. 1 depicts a multi-layer structure of a sealed insulated tank 1 for storing a liquefied fluid such as Liquefied Natural Gas (LNG). The tank 1 has a polyhedral shape and comprises several layers of walls. The tank wall of the storage tank 1 comprises, in order from its outside towards its inside in the thickness direction, a secondary thermal insulation barrier 2 held on a carrying structure 3, a secondary sealing film 4 resting against the secondary thermal insulation barrier 2, a primary thermal insulation barrier 5 resting against the secondary sealing film 4 and a primary sealing film 6 intended to be in contact with the liquefied natural gas contained in the storage tank 1.
The load-bearing structure 3 of the tank 1 may in particular be constituted by the hull of a ship or a double hull. The load bearing structure comprises a plurality of load bearing walls 3 defining the overall shape (typically a polyhedron shape) of the tank.
The secondary thermal barrier 2 comprises a plurality of secondary thermal blocks 7, said secondary thermal blocks 7 being anchored to the bearing wall 3 by means of a secondary anchoring system 98. The secondary insulating blocks 7 are parallelepiped-shaped as a whole and arranged side by side. The three rows are indicated by the letters A, B and C. Latex beads (not depicted) are inserted between the secondary insulating blocks 7 and the bearing wall 3 to compensate for the difference between the bearing wall 3 and the reference plane. If it is desired to prevent the latex beads from adhering to the bearing wall 3, kraft paper may be interposed between the latex beads and the bearing wall 3.
The number of secondary anchoring systems 98 may vary, for example the number of secondary anchoring systems 98 owned by each secondary insulation block 7 may be from 2 to 6, and located at the corners of four secondary insulation blocks and/or in the space between two secondary insulation blocks in the first or second direction.
FIG. 2 depicts the structure of the secondary insulation block 7 according to one embodiment. The secondary insulation block 7 here comprises two plates, namely a bottom plate 8 and a cover plate 10. The secondary insulation block 7 also comprises an insulating polymer foam block 11 sandwiched between the bottom plate 8 and the cover plate 10. Insulating polymer foam blocks 11 are bonded to the floor 8 and the deck 10. The insulating polymer foam may be specifically selected from polyurethane-based foams and may also be selected from fiber-reinforced insulating polymer foams. For example, the bottom plate 8 and the cover plate 10 are made of plywood.
According to a not described embodiment, the secondary insulation block comprises a bottom plate, a cover plate and side plates. Side plates connect the cover plate to the base plate and separate the plates to define an interior space of the secondary insulation block that is capable of containing one or more insulating materials. For example, the bottom panel, the cover panel and the side panels are made of plywood. Thus, the interior space of the secondary insulation block may be filled with an insulating filler, such as perlite or polyurethane foam, which may be reinforced with woven glass fibers or glass wool.
According to one undescribed embodiment, the secondary insulation block comprises a first high density polymer foam block, a floor panel bonded below the first high density polymer foam block, a middle panel bonded to the first polymer foam block, a second polymer foam block bonded to the middle panel, and a cover panel bonded to the second polymer foam block, such as described in document FR3000042 A1. According to another form of embodiment, each primary thermoblock spans four secondary thermoblocks, thus in a staggered configuration with respect to said four secondary thermoblocks. According to other alternatives, each primary insulation block spans two or six secondary insulation blocks.
According to other embodiments, the primary and secondary insulation blocks are different in structure.
Returning to fig. 1, it can be seen that the secondary sealing membrane 4 comprises a continuous sheet metal layer with the rim 32 turned upwards towards the interior of the can. The metal sheets are welded together in pairs on both sides of the welding flange by their turned over edges 32. The welding flange in the shape of a corner bracket has a cross-section. The turned edge 32 of the plate is welded on one leg of the bracket and the other leg is engaged with a groove 20 formed in the cover plate 10 of the secondary thermoblock 7, the cover plate 10 comprising a plurality of parallel grooves 20, the distance between two grooves 20 corresponding to the width of the plate and the distance between the free edge of the thermoblock and the adjacent groove 20 corresponding to the width of the plate, the plate thus connecting two adjacent thermoblocks 7. Thus, the secondary sealing film 4 is fixed on the secondary thermal insulation barrier 2. The welding flanges and the grooves 20 form a sliding joint, allowing the plate to shrink and deform with respect to the secondary thermoblocks 7.
For example, by
Figure GDA0003845614940000061
And (3) a finished board. Invar is an alloy of iron and nickel, with a typical coefficient of expansion of 1.2.10 -6 And 2.10 -6 K -1 In the meantime. It is also possible to use an alloy of iron and manganese, with an expansion coefficient of generally 7 to 9X 10 -6 K -1 。
Referring to fig. 1, the primary insulation barrier 5 includes a plurality of primary insulation blocks 22, and the primary insulation blocks 22 are stacked on the two rows of secondary insulation blocks 7. The primary insulation block 22 is anchored to the secondary insulation block 7 by a primary anchoring system 97. The primary anchoring system 97 is separate from and offset from the secondary anchoring system 98. The primary insulation blocks 22 are parallelepiped-shaped and arranged in parallel. Furthermore, they are the same size as the primary insulation blocks 22, they are smaller, except that they may differ in thickness in the thickness direction of the tank wall 1.
FIG. 3 depicts the structure of the primary insulation block 22 according to one embodiment. The primary insulation block 22 is similar in structure to the secondary insulation block 7 of fig. 2. Further, the primary insulation block 22 includes a bottom plate 23 and a cover plate 27. The primary insulation block 22 also includes an insulating polymer foam block 25 sandwiched between the floor 23 and the cover 27. The insulating polymer foam blocks are bonded to the bottom panel 23 and the cover panel 27. The insulating polymer foam may be specifically selected from polyurethane-based foams and may also be selected from fiber-reinforced insulating polymer foam blocks. The bottom plate 23 and the cover plate 27 are made of plywood, for example.
According to a not described embodiment, the primary insulation block comprises a bottom plate, a cover plate and side plates. Side panels connect the cover panels to the base panel and separate the panels to define an interior space capable of receiving a primary insulating block of one or more insulating materials. For example, the bottom panel, the cover panel and the side panels are made of plywood. The interior space of the primary insulation block may then be filled with an insulating filler, such as perlite or polyurethane foam, which may be reinforced with woven glass fibers or glass wool.
The primary insulation block 22 has openings 28 at its corner regions so that the bottom panel 23 protrudes beyond the insulating polymer foam block 25 and the cover panel 27. Thus, the bottom panel 23 at the level of the corner regions of the primary insulation block 22 forms a bearing zone 29 for cooperation with the primary anchoring system 97. A partition, shaped like the load-bearing zone 29, intended to cooperate with the main anchoring system 97, may be added to the bottom plate 23 in a manner not shown.
The bottom plate 23 comprises a recess 31 for receiving the turned over edge 32 of the plate of the secondary sealing membrane 4. The cover plate 27 may also comprise anchoring means (not shown in figures 1 and 3) for anchoring the primary sealing membrane 6.
The structure of the primary insulation block 22 is exemplified below. Thus, in another embodiment, the primary insulation block 22 is susceptible to assuming another unitary construction.
In another embodiment, the primary insulation barrier 5 comprises a primary insulation block 22, the primary insulation block 22 having at least two different types of structures, such as the two structures described above, depending on the area in which they are installed in the tank.
Figure 1 also shows a primary sealing film 6 comprising a continuous layer of rectangular plates 33 presenting two series of mutually perpendicular corrugations. The first series of corrugations 55 extend perpendicular to the insulation blocks A, B, C, and thus perpendicular to the turned edges 32 of the panels, and have uniform spacing 57. The second series of corrugations 56 extend parallel to the insulation blocks A, B, C, and thus parallel to the turned edges 32 of the panels, and exhibit uniform spacing. Preferably, the first series of corrugations 55 are taller than the second series of corrugations 56.
According to other embodiments, the primary sealing membrane structure is similar to the secondary sealing membrane, that is to say it consists of an assembly of plates with turned edges.
Fig. 4-9 depict various embodiments of primary anchoring systems.
According to a first embodiment, with reference to fig. 4 and 5, the primary anchoring system 97 comprises a base 100 and a mobile for fixing to the cover plate 10 of the secondary insulating block 7Component 102. The base 100 is a rotating cylinder whose height is less than the radius. At its center, the base 100 has an opening 108 to receive a lower portion 110 of the moving member 102. The sidewall 112 defines the opening 108, thereby restricting the lower portion 110 of the moving member 102 from moving within the opening 108. The base 100 also includes a bottom wall 106 disposed below the moving member 102. The bottom wall 106 is formed integrally with the base 100. The moving part 102 and the bottom wall 106 are preferably made of the materials mentioned above
Figure GDA0003845614940000081
Or 304L stainless steel. In this manner, friction generated by the moving member 102 in contact with the bottom wall 106 is minimized.
The moving member 102 includes an upper portion 114, a lower portion 110, and an aperture 104 opening on an upper surface of the upper portion 114. The holes 104 are used to cooperate with the studs to secure the primary insulation block 22 to the secondary insulation block 7. The hole may be tapped to screw the stud into the moving member 102. The lower portion 110 is circular. The sidewall 112 may define a rectangle or circle having a dimension greater than the dimension of the lower portion 110.
The upper portion 114 extends above the base 100 and has four rectangular channels 118. The oblong channel 118 extends in the longitudinal direction. The longitudinal direction is parallel to the direction in which the welding flanges extend. The base 100 carries a fixing screw engaged in the oblong channel 118 and fixes the mobile element 100 on said base in a sliding manner in the longitudinal direction. Thus, the upper portion 114 rests on the base 100, which the base 100 provides sliding support for.
When the moving member 102 and the base 100 are assembled and the assembly is mounted on the cover plate 10, the upper surface of the upper portion 114 is thus flush with the upper surface of the cover plate 10. The cover plate 10 then covers the rest of the anchoring system 97.
According to a second embodiment, with reference to fig. 6, the primary anchoring system 97 comprises a base 200 for fixing to the cover plate 10 of the secondary thermoblock 7 and a mobile part 202. The base 200 is a rotating cylinder whose height is less than the radius. At its center, the base 200 has a through hole 208 to receive a lower portion 210 of the moving member 202. The opening 208 is defined by a sidewall 212, thereby restricting the lower portion 210 of the moving member 202 from moving within the opening 208.
The moving member 202 includes an upper portion 214, a lower portion 210, and a hole 204 opened on an upper surface of the upper portion 214. The upper portion 214 extends above the base 200 and rests on the base 200, the base 200 thus providing sliding support for the moving member 202.
The holes 204 are used to cooperate with the studs to secure the primary insulation block 22 to the secondary insulation block 7. The hole 204 may be tapped so that the stud is screwed into the moving member 202. The lower portion 210 is circular. The sidewall 212 may define a rectangular or circular shape having a dimension greater than that of the lower portion 210.
The bottom wall 206 is secured to a lower portion 210 of the moving member 202. Bottom wall 206 can be secured by welding or by screwing and then welding. The base 200 has a shoulder 230 at the level of the opening 208, so that the bottom wall 206 can be in contact with the shoulder 230. Preferably, there is no pressure contact to allow sliding.
If the opening 208 is rectangular and the bottom wall 206 and/or the lower part 210 is circular, the moving part may be guided in the longitudinal direction in which the welding flange extends. If the bottom wall 206, the opening 208 and the lower part 210 are circular complementary, it is also possible to replace the welding flange being guided in a plane defined by the longitudinal direction in which the welding flange extends and in a direction orthogonal to the longitudinal direction, each dimension being different.
When moving member 202 and base 200 are assembled and the assembly is mounted on cover 10, the upper surface of upper portion 214 is flush with the upper surface of cover 10. The cover plate 10 then covers the rest of the anchoring system 97.
According to a third embodiment, with reference to fig. 7 and 8, the primary anchoring system 97 comprises a base 300 and a moving part 302 for fixing to the cover plate 10 of the secondary insulation block 7. The base 300 is a rotating cylinder with a height less than the radius. At its center, the base 300 has an opening 308 to receive a lower portion 310 of the moving member 302. The sidewall 312 defines an opening 308, thereby restricting movement of the lower portion 310 of the moving member 302 within the opening 308.
The moving member 302 includes an upper portion 314, a lower portion 310, and a hole 304 opened on an upper surface of the upper portion 314. The lower portion includes a protrusion 330. Preferably, the protrusions 330 extend divergently all the way along the lower portion 310. The anchoring system 97 also includes a ring 316, the ring 316 being configured to clamp the lower portion 310 (i.e., the protrusion 330) of the moving member 302 with the base 300. The ring 316 has a rectangular opening so as to guide the moving member 302 in a longitudinal direction parallel to the longitudinal direction in which the welding flange extends.
Alternatively, the opening 308 may be rectangular and the lower portion 310 may be circular to guide the moving member 302 in the longitudinal direction.
The holes 304 are used to cooperate with the studs to secure the primary insulation block 22 to the secondary insulation block 7. The hole 304 may be tapped so that the stud is screwed into the moving member 302. The lower portion 310 is circular. The sidewall 312 may define a rectangle or circle having a dimension greater than the dimension of the lower portion 310.
The base 300 also includes a bottom wall 306 disposed below the moving member 302. The bottom wall 306 is integral with the base 300. The moving member 302 and the bottom wall 306 are preferably made of a material such as those described above
Figure GDA0003845614940000091
Is made of the metal of (1). Therefore, friction generated between the moving member 302 and the bottom wall 306 upon contact is minimized.
The ring 316 has four circular channels 318. The base 300 carries a screw that engages in a circular channel and into a ring 316 on the base. A portion of the ring 316 is seated and secured on the base 300 and another portion of the ring 316 maintains the moving portion 302 in a sliding position in the opening 308.
When moving member 302 and base 300 are assembled and the assembly is mounted on cover 10, the upper surface of upper portion 314 is flush with the upper surface of cover 10. The cover plate 10 then covers the rest of the anchoring system 97.
Referring to fig. 9, the primary anchoring system 97 according to the fourth embodiment is similar to that of the third embodiment. However, the difference is that the opening in the ring is circular in shape and the opening 308 is also circular in shape. Thus, the moving member may move within a plane defined by the longitudinal direction in which the welding flange extends and a direction perpendicular to the longitudinal direction.
Referring to fig. 10, the primary anchoring system 97 according to the fifth embodiment is similar to that of the fourth embodiment. The only difference is that the ring 316 is welded to the base 300 at its periphery, rather than being screwed down.
Referring to fig. 11, the primary anchoring system 97 according to the fifth embodiment comprises a base 400 and moving parts 402 for fixing to the cover plate 10 of the secondary insulating block 7. The base 400 is a rotating cylinder having a height smaller than a radius, and the base 400 supports the moving member 402.
The moving member 402 includes an upper portion 414, a lower portion 410, and a hole 404 opened on an upper surface of the upper portion 414. The lower portion includes a protrusion 430. Preferably, the protrusions 430 extend divergently all the way along the lower portion 410. The anchoring system 97 also includes a ring 416, the ring 416 being configured to clamp the lower portion 410 (i.e., the protrusion 430) of the moving member 402 with the base 400. The ring 416 may be open rectangularly such that the moving part 402 is guided parallel in the longitudinal direction in which the welding flange extends.
The holes 404 are used to cooperate with the studs 35 to secure the primary insulation block 22 to the secondary insulation block 7. The hole 404 may be tapped to screw a stud to the moving part 402. The lower portion 410 is circular. The sidewalls may define a rectangle or circle with a dimension greater than the dimension of the lower portion 410. The formed space 408 may then be filled by adding foam 600. The foam 600 will act as a centering and shock absorbing means.
The ring 416 has four circular channels, not shown. The base 400 carries screws that engage in the circular channels and maintain the ring 316 on the base. Alternatively, the ring 416 may be welded to the base 400.
A portion of the ring 416 is seated and secured on the base 400 and another portion of the ring 416 maintains the moving member 402 in its central sliding position. In this embodiment, the ring 416 guides the sliding member 402. The washer 500 may be coupled between the ring 416 on the moving member 402 and the moving member 402. Preferably, the gasket 500 is made of Polytetrafluoroethylene (PTFE).
When the moving part 402 and the base 400 are assembled and the assembly is mounted on the cover plate 10, the upper surface of the upper part 414 is then flush with the upper surface of the cover plate 10, and the cover plate 10 then covers the rest of the anchoring system 97.
The use of the gasket 500 and foam may thus be extended to other embodiments and is not limited to the present embodiment.
At the level of the threaded holes 104, 204, 304, 404 of the moving parts 102, 202, 302, 402, the secondary sealing membrane 7 is pierced to allow the passage of the studs 35. The studs 35 will allow the primary insulation block 7 to be subsequently secured to the secondary insulation block 22 as will be described.
Referring to FIG. 12, the stud 35 includes a circular flange 34 and a threaded lower portion 90 located below the circular flange 34. The threaded lower portion is adapted to be screwed into the threaded hole 104, 204, 304, 404 in the moving member 102, 202, 302, 402.
Above the circular flange 34 and below the threaded upper portion 91, the stud 35 has, from bottom to top, a section 91 with a diameter greater than the diameter of the upper portion 51, a section 92 with a diameter equal to or slightly less than the diameter of the section 91, and at least one flat 94, which flat 94 can be fixed by a wrench or other tool for screwing the stud 35 into the threaded hole 104, 204, 304, 404 and has a diameter substantially equal to the non-threaded section 93 of the threaded upper portion 51.
The studs 35 hold a fixture (not depicted) comprising a flat washer, one or more belleville washers, and a nut in contact with the bearing end 29 to maintain the primary insulation block 9. The washer is located in the region of the section 93 and the nut is screwed onto the threaded upper part 51.
If the length and/or width of the primary insulation block 8 is large, one or more primary anchoring systems arranged along said length and/or width may be provided, these potential primary anchoring systems having a structure similar to the primary anchoring systems described above.
The stud 35 has a circular flange 34 intended to be welded to the secondary sealing membrane 4 around its outer circumference with a bore hole for exposing the holes 104, 204, 304/404. Thereby ensuring the continuity of the seal of the secondary sealing film 4. Thus, the secondary sealing membrane is sandwiched between the circular flange 34 of the stud 35 and the upper surface of the upper portion 114, 214, 314, 414 of the moving member 102, 202, 302, 402.
Referring to fig. 13, an opening 12 is formed in the cover plate 10 of the secondary insulation block 7 such that the free end of the base 100, 200, 300, 400 abuts the cover plate 10 on the side facing the insulation polymer foam block 11. The opening 12 is located at the center of the cover plate 10. The cover plate 10 is thick enough so that the base plates 100, 200, 300, 400 do not extend beyond the lower surface of the cover plate 10 once installed in the opening 12. The opening exposes only the upper surface of the upper portion 114, 214, 314, 414 of the moving part 102, 202, 302, 402 such that the upper surface of the upper part 114, 214, 314, 414 is flush with the upper surface of the secondary insulation block 7.
Next, the primary anchoring system 97 is fixed to the cover plate 10 by screws or any other suitable means. The cover sheet 10 is then bonded to the insulating polymer foam block 11 to obtain the secondary insulating block 7. The secondary insulation block 7 is then anchored to the load bearing wall 3 using the secondary anchoring system 98. Once all the secondary insulation blocks 7 have been anchored, the secondary sealing membrane 4 is installed and drilled at the level of each hole 104, 204, 304, 404 for subsequent screwing in of studs.
The studs 35 are then screwed into the holes 104, 204, 304, 404 of the moving parts 102, 202, 302, 402 and welded by their circular flanges to the secondary sealing membrane 4 around the drilled holes. Therefore, the continuity of the seal of the secondary sealing film 4 is ensured. Thus, four primary insulation blocks 22 are placed on the secondary sealing membrane 4 around the free ends of the studs 35. One or more belleville spring washers slide over the stud 35 to be flush with the section 93. The gasket then contacts the bearing zone 29 of the primary insulation block 22. Finally, a nut is screwed onto the threaded upper portion 51, and the primary insulation block 22 is fixed to the secondary insulation block 7 by clamping.
Referring to fig. 14, a cross-sectional view of a methane carrier 70 shows a sealed, thermally insulated, prismatic, monolithic tank 71 mounted in the double hull 72 of a marine vessel. The tank 71 comprises a primary containment barrier intended to come into contact with the LNG contained in the tank; a secondary sealing barrier disposed between the primary sealing barrier of the vessel and the double hull 72; two thermal barriers are provided between the primary and secondary containment barriers and between the secondary containment barrier and the double shell 72, respectively.
In a known manner, the loading and unloading lines 73 on the vessel's upper deck may be connected to a marine or harbour terminal by means of suitable connectors in order to transfer LNG cargo from or to the storage tank 71.
Fig. 14 depicts one example of a marine terminal comprising a loading/unloading station 75, a subsea pipeline 76 and an onshore facility 77. The loading/unloading station 75 is a fixed offshore facility that includes a mobile arm 74 and a tower 78 that supports the mobile arm 74. The mobile arm 74 carries a bundle of insulated hoses 79, the insulated hoses 79 being connectable to the loading/unloading line 73. The directionally movable arm 74 is adaptable to all sizes of methane carrier vessels. A not depicted connecting pipe extends along the interior of the tower 78. The loading/unloading station 75 allows the vessel 70 to be loaded/unloaded from an onshore facility 77. The latter comprises a liquefied gas storage tank 80 and a connection pipe 81 connected to the loading and unloading station 75 through the underwater pipeline 76. The submarine pipeline 76 allows for long distance transfer of liquefied gas, e.g. 5 km, between the loading or unloading station 75 and the onshore facility 77, which allows the vessel 70 to be far off shore for a long distance during loading and unloading operations.
In order to generate the pressure required for the transportation of liquefied gas, pumps carried on board the vessel 70 and/or equipped with an onshore facility 105 and/or with a loading or unloading station 75 are used.
Although the invention has been described in connection with a number of specific embodiments, it is clear that it is not in any way restricted thereto and that it comprises all the technical equivalents of the means described and their combinations which fall within the scope of the invention.
Use of the verbs "comprising," "having," or "containing" and their conjugations 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 (14)

1. A wall of a sealed and thermally insulated tank (1) for storing liquids, characterized in that it is incorporated in a load-bearing structure (3), the wall of said tank (1) comprising, in succession in the thickness direction of the wall, a secondary thermal insulation barrier (2) maintained on said structure (3), a secondary sealing film (4) resting on said secondary thermal insulation barrier (2), a primary thermal insulation barrier (5) resting on said secondary sealing film (4) and a primary sealing film (6) resting on said primary thermal insulation barrier (5), wherein said secondary thermal insulation barrier (2) comprises a secondary thermal insulation block (7), the secondary thermal insulation block (7) comprising a cover plate (10) forming a bearing surface for said secondary sealing film (4), wherein said secondary sealing film (4) comprises a plurality of metal plates having edges (32) turned upwards inside said tank, said metal plates being welded, by their turned edges (32), in pairs to a welding flange mechanically maintained on said secondary thermal insulation block (7), said welding flange portion being engaged in said cover plate (10) and being fixed in a longitudinal anchoring system (100) extending along said primary thermal insulation groove (20), said primary thermal insulation block (7), wherein said primary thermal insulation block (10) comprises an anchoring system (100) comprising a primary thermal insulation block (7) extending in the longitudinal direction of said primary thermal insulation base (10) and a primary thermal insulation block (10) comprising a primary thermal insulation block (7) and a primary thermal insulation block (7) comprising a primary thermal insulation block (7) forming a primary thermal insulation system 200, 300, 400) and a moving part (102, 202, 302, 402) fixed to the base (100, 200, 300), the moving part (102, 202, 302, 402) being fixed to the base (100, 200, 300, 400) along the thickness direction of the wall and being mounted so as to be movable in the base (100, 200, 300, 400), the moving part (102, 202, 302, 402) comprising a threaded hole (104, 204, 304) opening onto an upper surface of the moving part (102, 202, 302, 402), the upper surface of the moving part (102, 202, 302, 402) being flush with the upper surface of the cover plate (10), the moving part (102, 202, 302, 402) being mounted in a free space so as to be able to perform a longitudinal translational movement at least parallel to the welding flange.
2. The wall of a sealed, thermally insulated tank (1) for storing liquids according to claim 1, characterized in that the base (100, 200, 300) has a bottom wall (106, 206, 306) arranged below the moving part and an opening (108, 208, 308) accommodating a lower part (110, 210, 310) of the moving part (102, 202, 302), the opening (108, 208, 308) being defined by a side wall (112, 212, 312) in order to guide the moving part parallel to the longitudinal direction.
3. The wall of a hermetically sealed and insulated tank (1) for storing a liquid according to claim 2, characterized in that said primary anchoring system (97) further comprises a ring (316), the ring (316) being configured to clamp said lower portion (310) of said mobile part (302) using said seat (300).
4. The wall of a hermetically sealed and insulated tank (1) for storing liquids as claimed in claim 3, characterized in that said ring (316) has a rectangular opening so as to guide said moving part in a longitudinal direction parallel to said metal sheet.
5. The wall of a hermetically insulated tank (1) for storing liquids according to claim 3 or 4, characterized in that the upper part of the ring (316) is flush with the upper surface of the cover plate (10).
6. Wall of a sealed and thermally insulated tank (1) for storing liquids according to claim 1 or 2, characterized in that said mobile part (102) rests on the upper surface of said base and has a rectangular channel (118) parallel to the longitudinal direction, and in that said base (100) carries fixing screws engaged in said rectangular channel (118) and fixes said mobile part (102) on said base (100) in a sliding manner.
7. The wall of a hermetically sealed and insulated tank (1) for storing a liquid according to claim 1, characterized in that the stud (35) has a threaded lower portion (90), said threaded lower portion (90) being screwed into said threaded hole (104, 204, 304).
8. The wall of a hermetically sealed and insulated tank (1) for storing a liquid according to claim 7, characterized in that the stud (35) comprises a circular flange (34) extending over the mobile part (102, 202, 302).
9. Wall of a sealed and insulated tank (1) for storing liquids according to claim 8, characterized in that said circular flange (34) is designed to bring said secondary sealing membrane (4) into contact with said moving part (102, 202, 302).
10. Wall of a sealed and insulated tank (1) for storing liquids according to any of claims 8 and 9, characterized in that said circular flange (34) is welded peripherally and in a sealed manner to said secondary sealing membrane (4).
11. The wall of a sealed and thermally insulated tank (1) for storing liquids according to claim 10, characterized in that said primary anchoring system (97) further comprises at least one washer and at least one nut cooperating with the threaded upper portion of said stud (35) to keep said washer pressed against the floor (23) of the primary insulating block (22).
12. A ship for transporting a cryogenic liquid product, characterized in that the ship comprises a double hull and a tank arranged inside said double hull, said tank being a tank comprising a wall according to any of claims 1-11.
13. A transfer system for a cryogenic liquid product, the system comprising a vessel according to claim 12, an insulated pipeline designed to connect a storage tank mounted in the hull of the vessel to a floating or onshore storage facility, and a pump for driving the cryogenic liquid product through the insulated pipeline between the floating or onshore storage facility and the storage tank of the vessel.
14. Method for loading and unloading a marine vessel according to claim 12, wherein the cryogenic liquid product is transferred from or from the floating or onshore storage facility to the storage tank of the marine vessel via insulated conduits.
CN201911276439.6A 2018-12-21 2019-12-12 Anchoring system for sealed insulated tanks Active CN111350939B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1874075A FR3090810B1 (en) 2018-12-21 2018-12-21 Anchoring system for sealed and thermally insulating tank
FR1874075 2018-12-21

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CN111350939A CN111350939A (en) 2020-06-30
CN111350939B true CN111350939B (en) 2023-03-24

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Publication number Priority date Publication date Assignee Title
FR3129455A1 (en) 2021-11-22 2023-05-26 Gaztransport Et Technigaz Watertight and thermally insulated tank
FR3140614A1 (en) 2022-10-11 2024-04-12 Gaztransport Et Technigaz Assembly process for assembling a waterproof and thermally insulating tank wall
CN117068325B (en) * 2023-10-13 2024-02-09 沪东中华造船(集团)有限公司 Self-adaptive adjustment method for cold deformation of insulating module of thin-film enclosure system

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FR2887010B1 (en) 2005-06-10 2007-08-10 Gaz Transp Et Technigaz Soc Pa SEALED AND THERMALLY INSULATED TANK
FR2972242B1 (en) * 2011-03-01 2014-10-17 Gaztransp Et Technigaz FIXING INSULATING PANELS ON A CARRIER WALL ACCORDING TO A REPEATED PATTERN
FR2978748B1 (en) * 2011-08-01 2014-10-24 Gaztransp Et Technigaz SEALED AND THERMALLY INSULATED TANK
FR2985560B1 (en) 2012-01-09 2015-08-21 Gaztransp Et Technigaz SEALED AND INSULATED TANK WITH PRIMARY RETENTION MEANS
FR2996520B1 (en) * 2012-10-09 2014-10-24 Gaztransp Et Technigaz SEALED AND THERMALLY INSULATING TANK COMPRISING A METALIC MEMBRANE WOUNDED ACCORDING TO ORTHOGONAL PLATES
FR3000042B1 (en) * 2012-12-21 2015-01-23 Gaztransp Et Technigaz SEALED AND THERMALLY INSULATED TANK
FR3004508B1 (en) * 2013-04-11 2016-10-21 Gaztransport Et Technigaz INSULATING BLOCK FOR THE MANUFACTURE OF A WATERPROOF AND INSULATED TANK WALL
FR3004509B1 (en) * 2013-04-12 2016-11-25 Gaztransport Et Technigaz ANGLE STRUCTURE OF A SEALED AND THERMALLY INSULATING STORAGE OF A FLUID
FR3004511B1 (en) * 2013-04-15 2016-12-30 Gaztransport Et Technigaz SEALED AND THERMALLY INSULATED TANK
KR101444347B1 (en) * 2013-05-24 2014-11-04 삼성중공업 주식회사 Position rearrangement apparatus used for cargo barrier structure, and method for welding using the same
KR101531494B1 (en) * 2013-10-10 2015-06-25 삼성중공업 주식회사 Cargo barrier structure
KR102297860B1 (en) * 2014-09-22 2021-09-03 대우조선해양 주식회사 Insulation System of Liquified Natural Gas Cargo Containment System
FR3026459B1 (en) * 2014-09-26 2017-06-09 Gaztransport Et Technigaz SEALED AND INSULATING TANK WITH A BRIDGING ELEMENT BETWEEN THE PANELS OF THE SECONDARY INSULATING BARRIER

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KR20200079192A (en) 2020-07-02
FR3090810A1 (en) 2020-06-26
RU2019139991A (en) 2021-06-07
FR3090810B1 (en) 2021-01-01
CN111350939A (en) 2020-06-30

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