Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
  • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
  • 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
• • 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
  • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
• • 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
  • F17C2203/0358—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
  • F17C2203/0629—Two 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
  • 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
  • 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
  • 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
  • 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
  • F17C2260/00—Purposes of gas storage and gas handling
  • F17C2260/01—Improving mechanical properties or manufacturing
  • F17C2260/016—Preventing slosh
• • 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

Definitions

• the present invention relates to an improvement for a sealed and thermally insulating tank integrated into a supporting structure.
• a tank is known waterproof and insulating which is integrated in a supporting structure, including ship, and which comprises two successive sealing barriers: one primary, in contact with the product contained in the tank and the other secondary disposed between the barrier of primary sealing and the supporting structure. Between these two sealing barriers, on the one hand, and between the secondary sealing barrier, on the other hand, is disposed at least one thermally insulating barrier.
• the primary sealing barrier is made of metal and the secondary metal or composite sealing barrier may comprise a metal core.
• the thermally insulating barriers are made in the form of modules, or panels, juxtaposed, of general polygonal shape, whose thickness is determined according to the desired insulating power. These modules include a cover and a bottom designated indistinctly by the term “plate”.
• the term "primary thermally insulating barrier” designates that on which the primary sealing barrier rests, and the term “secondary thermal barrier” means that on which the secondary sealing barrier rests.
• the primary thermally insulating barrier can also undergo degradation of both the thermal insulation layer, the rigid plate constituting the support of this primary thermal insulation barrier.
• Another object of the invention is to provide such an improvement which results in as little structural modification as possible.
• An additional aim of such an improvement is not to substantially increase the cost of such a tank.
• Another object of the invention is to provide such an improvement which makes it possible to improve, at an acceptable cost, the sealed insulating tanks integrated in a supporting structure.
• the thermal insulation barrier is constituted by a module, which has substantially the shape of a rectangular parallelepiped and comprises a first plate, for example plywood, surmounted by a first layer thermal insulation, itself surmounted by a sealing barrier, itself attached to the upper plate of the secondary insulation, on which is disposed a second layer of thermal insulation which itself carries a second plate plywood, on which rests in a known way the primary sealing barrier constituted by strakes or metal plates, the damping device is located under the primary sealing barrier and is constituted by the second plate which is composed by the two walls between which is disposed the layer of damping material.
• the thermal insulation barrier being constituted by a module, which has substantially the shape of a rectangular parallelepiped and comprises a first plate, for example plywood, surmounted by a first layer thermal insulation, itself surmounted by a sealing barrier on which is arranged a second thermal insulation layer which itself carries a second plate, for example of plywood, on which in a known manner the barrier primary sealing formed by strakes or metal plate, the damping device is located under the gate of secondary sealing.
• the damping device is disposed between the secondary sealing barrier and the second layer of thermal insulation.
• the damping device is disposed between the first plate and the first layer of thermal insulation.
• a deflection means depressing between the first and the second wall and passing through the layer of damping material.
• the depression means is inserted into cavities respectively formed in the two walls, T-shaped, the free ends of the vertical bar of the T facing each other, and an H bar being disposed in the space thus delimited.
• the driving deflection means is inserted into cells, respectively formed in one of the walls and the other in the second layer of thermal insulation, T-shaped, the free ends of the vertical bar of the T facing each other, and an H bar being disposed in the space thus delimited.
• the junctions between first walls are offset from those of the second.
• this junction between the first walls is identical to that between the blades of an English floor.
• the second wall has a modulus of elasticity at least ten percent lower than that of current materials.
• the two walls have a thickness of between 9 and 21 mm.
• the two walls are fir plywood or a composite material.
• the first plate is fixed on the wall of the carrier structure with the interposition of a mastic bead having a modulus of elasticity of at most 500 MPa at a temperature of -25 ° C. and about 150 MPa at a temperature of 25 ° C. ° C.
• FIG. 1 shows, in section, perpendicular to the wall of a supporting structure formed by the double shell or the double transverse wall of a ship, and in an exploded position schematically showing the mounting of the different elements of a tank, according to the prior art, in a zone of the tank not close to an angle of the tank;
• FIG. 2 shows, in section, perpendicular to the wall of a supporting structure formed by the double shell or the double transverse wall of a ship, and in an exploded position schematically showing the mounting of the various elements of a tank according to a first embodiment of the present invention, in a zone of the vessel not close to an angle of the vessel;
• FIG. 3 represents an alternative embodiment of the present invention according to FIG. 2;
• FIG. 4 represents a second embodiment of the present invention;
• FIG. 5 represents a third embodiment of the present invention.
• FIG. 6 shows a fourth embodiment of the present invention.
• FIG. 1 denotes by reference 1, the wall of the double hull of the ship, where is installed the tank according to the invention. It is known that a ship's hull also has transverse partitions, which cut the hull into compartments, these transverse partitions being also double: in the present description the term "double wall 1" will be designated as well the wall of the double hull than the transverse walls above, which delimit such a tank.
• the double walls 1 constitute the carrying structure of the tank described.
• the tank is of the type comprising two sealing barriers, one primary 1 0 and the other secondary 5, and at least one thermal insulation barrier constituted by a module, which has substantially the shape of a rectangular parallelepiped and comprises a first plate 3 topped plywood with a first thermal insulating layer 4, itself surmounted by the primary sealing barrier 5 on which is arranged a second layer of thermal insulation 6 which itself carries a second plywood plate 7, on which rests in known manner the primary sealing barrier 10.
• the secondary and primary 5 sealing barriers 10 are constituted by strakes, preferably in invar, or metal plates which can be embossed.
• the assembly comprising the first plate 3 and the first layer of thermal insulation 4 is the modulus of the thermally insulating barrier secondary 2b; the assembly comprising the second plate 7 and the second layer of thermal insulation 6 constitutes the module of the primary thermally insulating barrier 2a.
• the modules 2a and 2b have substantially the shape of a rectangular parallelepiped.
• the module 2a has, seen in plan, a rectangular shape whose sides are parallel to those of the module 2b: seen in plan, the two modules 2a and 2b have the form of offset rectangles, in order to limit thermal leakage and to ensure a better distribution of efforts.
• the damping device is placed under the primary sealing barrier 10 and consists of the second plate 7, on which the primary sealing barrier rests. 10, itself constituted by a sandwich assembly which comprises:
• a first wall 8 made of a plywood and / or a composite material and supporting the primary sealing barrier;
• the plywood constituting the first wall 8 and the second wall 9 has a thickness of between 9 and 21 mm.
• This second wall 9 has a modulus of elasticity in cold bending of between 10,000 and 13,000 MPa.
• a plywood according to the present invention is for example a fir plywood or a composite material.
• the modulus of elasticity of the second wall 9 is at least ten percent less than that of the walls of current materials.
• the damping material 1 1 disposed between the two walls 8 and 9 above it has a thickness of between 2 and 15 mm, and for example 8 mm: this thickness is chosen such that, under the shock load considered, they are depreciated, on the one hand, and the crushing resulting from this damping material does not lead it to ruin, on the other hand.
• This material may be a felt, a material based on woven or bonded fibers with or without insulating materials such as, for example, an airgel: the assembly thus produced being bonded or mechanically assembled.
• the damping device is disposed under the secondary sealing barrier 5. It consists of two walls 8 'and 9' as previously described between which is interposed a layer 1 1 of damping material In this case, one of the walls, that referenced 9 'in this case, is based on the first layer of insulating material 4, and the other wall 8' is surmounted by the secondary sealing barrier 5
• junctions between the first walls 8 or 8 ' are offset with respect to those of the second walls 9 or 9' so as to ensure a better mechanical continuity of the insulating mass.
• This junction between the first walls 8 or 8 ' is for example identical to that between the blades of an English floor
• first wall 8 and the second wall 9 there is disposed between the first wall 8 and the second wall 9, and thus passing through the layer of damping material January 1, means of deflection depression
• means of deflection depression include, according to the present example embodiment, two cells, 12a and 12b respectively, T-shaped connected by the vertical bar T and a bar 13 H being disposed in the space thus defined
• the cell 12b is situated, not in the second wall 9, but in the second thermal insulator layer 6 of the module 2a constituting the primary thermally insulating barrier.
• the damping device 7 is disposed above the second sealing barrier 5 and therefore under the second layer of thermal insulation 6
• the damping device 7 is situated between the first plate 3 of the secondary thermally insulating barrier module 2b and the first thermal insulation layer 4 of the same module 2b.
• the first plate 3 is fixed on the wall 1 of the support structure with the interposition of a mastic bead 14 having a modulus of elasticity of at most 500 MPa at a temperature of -25. C. and about 150 MPa at a temperature of 25 ° C.
• the damping of a tank comprising the improvement according to the present invention is at least three times greater than that according to the present structures, this effect being carried out on the liquid side conveys

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Filling Or Discharging Of Gas Storage Vessels (AREA)
• Building Environments (AREA)
• Laminated Bodies (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Ocean & Marine Engineering (AREA)
• Thermal Insulation (AREA)

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Citations (4)

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• 2009
  • 2009-04-03 FR FR0901636A patent/FR2944087B1/fr not_active Expired - Fee Related
• 2010
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  • 2010-04-02 SG SG2014012793A patent/SG2014012793A/en unknown
  • 2010-04-02 WO PCT/FR2010/000283 patent/WO2010112715A1/fr active Application Filing
  • 2010-04-02 CN CN201410053547.8A patent/CN103770905B/zh active Active
  • 2010-04-02 KR KR1020147005292A patent/KR20140034943A/ko active Application Filing
  • 2010-04-02 EP EP14155237.2A patent/EP2733410A3/fr not_active Withdrawn
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• 2014
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