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
  • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
• • 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
  • 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
  • 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
  • F17C2203/0358—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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/01—Mounting arrangements
  • F17C2205/0153—Details of mounting arrangements
  • F17C2205/018—Supporting feet
• • 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
• • 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
  • 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
  • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
  • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
  • F17C2223/042—Localisation of the removal point
  • F17C2223/046—Localisation of the removal point in the liquid
  • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
• • 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
  • 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
  • F17C2227/0171—Arrangement
  • F17C2227/0178—Arrangement in the vessel
• • 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
• • 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
  • F17C2270/0102—Applications for fluid transport or storage on or in the water
  • F17C2270/011—Barges
  • F17C2270/0113—Barges floating

Definitions

• the invention relates to the field of sealed and thermally insulating tanks, with membranes, for storing and / or transporting fluid, such as a cryogenic fluid.
• LNG liquefied natural gas
• WO-A-2011/157915 discloses a sealed and thermally insulating tank for the storage of liquefied natural gas, of the type which comprises a tank wall attached to a plane bearing wall.
• the vessel wall includes a primary waterproofing membrane and a thermally insulating barrier disposed between the supporting structure and the primary waterproofing membrane.
• the primary waterproofing membrane consists essentially of a plurality of corrugated metal sheets welded to each other in a sealed manner which form a first series of equidistant parallel rectilinear corrugations extending in a first direction of the plane of the carrier wall and a second series of equidistant parallel rectilinear ripples extending in a second direction of the plane of the carrier wall, the second direction being perpendicular to the first direction, the distance between two adjacent corrugations of the first series and the distance between two adjacent corrugations of the second series being equal to a predetermined waviness interval.
• the corrugated metal sheets have rectangular shapes whose sides are parallel to the first direction and the second direction respectively of the plane of the carrier wall and whose dimensions are substantially equal to integer multiples of the corrugation interval, each edge of a corrugated metal sheet being located between two adjacent corrugations parallel to said edge.
• WO-A-201 1 157915 provides structures for the passage of a support leg through the bottom wall of the vessel.
• these structures provide to move the ripple path locally to form more complex ripple networks.
• complexification of the corrugation network may prove complicated to implement, in particular in the case where the path of the corrugations is reflected on other elements of the vessel wall, which must then be adapted to the networks. more complex waves.
• An idea underlying the invention is to propose a multilayer structure vessel wall equipped with a through element passing through a singular zone of the vessel wall and in which the structure of the vessel wall in said Singular area is simple and easily connects to adjacent areas of the tank wall.
• the invention provides a sealed and thermally insulating vessel, said vessel having a vessel wall attached to a planar bearing wall, the vessel wall comprising at least one sealing membrane and at least one thermally insulating barrier disposed between the supporting structure and the waterproofing membrane,
• the or each sealing membrane consisting essentially of a plurality of corrugated metal sheets welded to each other in a sealed manner which form a first series of equidistant parallel rectilinear ripples extending in a first direction of the plane of the load-bearing wall and a second series of equidistant parallel rectilinear ripples extending in a second direction of the plane of the carrier wall, the second direction being perpendicular to the first direction, the distance between two adjacent corrugations of the first series and the distance between two corrugations.
• the plates corrugated metal having rectangular shapes whose sides are parallel to the first direction and the second direction respectively of the plane of the carrier wall and whose dimensions are substantially equal to integer multiples of the corrugation interval, each edge of a corrugated metal sheet being located between two adjacent corrugations parallel to said edge,
• the or each thermally insulating barrier consisting essentially of a plurality of juxtaposed insulating panels each having an inner face which forms a support surface for the waterproofing membrane, the insulating panels having rectangular parallelepiped shapes whose sides are parallel to respectively the first direction and the second direction of the plane of the bearing wall and whose projection dimensions in the plane of the carrier wall are substantially equal to integer multiples of the corrugation interval,
• metal anchor plates being fixed on the internal faces of the insulating panels and corrugated metal sheets having edges welded to said anchor plates for retaining the sealing membrane against said support surface
• the sealed tank being equipped with a through element passing through the vessel wall.
• the corrugations of the primary waterproofing membrane are offset by half a corrugation interval in each of the two directions of the plane relative to the corrugations of the secondary waterproofing membrane,
• the corrugated metal sheets of the primary waterproofing membrane are interrupted at an opening, said opening interrupting two corrugations of each series of corrugations of the primary waterproofing membrane, said opening being centered at a position in the middle of the two undesired corrugations of each series of corrugations of the primary waterproofing membrane, and the corrugated metal sheets of the secondary waterproofing membrane are interrupted at an opening, said opening interrupting a sequence of three undulations of each series of of the secondary sealing membrane, said opening of the secondary sealing membrane being concentric with the opening of the primary sealing membrane, said opening of the secondary sealing membrane being centered at a position at the intersection of the second undulation of the sequence of three undulations belonging to the first set of the secondary sealing membrane and the second undulation of the sequence of three undulations belonging to the second set of the secondary sealing membrane .
• the one or one of the thermally insulating barrier (s) around the through element comprises a plurality of insulating panels which form a square-shaped ring around the through-member, said ring having external sides measuring substantially 910 which are parallel to the first direction and the second direction respectively of the plane of the supporting wall, said crown delimiting at its center a square window whose sides are substantially 30 and which are also parallel to the first direction respectively. and the second direction of the plane of the carrier wall, so that the through element passes through the thermally insulating barrier in said square window,
• a first plurality of anchor plates being disposed on the internal face of said ring along the four outer sides of said ring, the distance between each anchor plate of the first plurality and the outer side that it runs being equal to the waving interval
• connecting pieces sealingly connected to the traversing element being arranged in the square window around the through element at the inner face of the insulating panels which form the ring.
• the corrugated metal sheets of the or one of the membrane (s) around the sealing element comprise: two rectangular metal plates scalloped wide of 3io in the first direction and 710 long according to the second direction, which are symmetrical to one another with respect to an axis of symmetry parallel to the second direction passing through the center of the square window, said second axis of symmetry, each rectangular indented rectangular metal plate having three outer edges arranged at the right of the first plurality of anchor plates and welded to the first plurality of anchor plates and an inner edge having a recess arranged to avoid cutting said square window, said notch having a width equal to 1 io according to the first direction and a length equal to 3io in the second direction so that the portion echanc the inner edge runs along the square window, and two catch-up metal plates arranged between the non-indented portions of the inner edges of the two scalloped rectangular metal plates, the two catch-up metal plates being symmetrical to one another with respect to an axis of symmetry parallel to the
• each metal catch plate being sealed to the inner edges of the two notched rectangular metal plates, and the outer lateral edge of each metal catch plate being welded to the anchor plates of the first plurality, the portion scalloped from the inner edge of each scalloped rectangular metal plate and the inner side edge of each catch-up metal plate being sealingly welded to said connecting pieces.
• this structure creates a gap between the edges of the insulating panels and the edges of the corrugated metal sheets of the membrane. sealing, which also facilitates the connection to adjacent areas of the tank wall, where it is generally necessary that a corrugated metal sheet overlaps several insulating panels.
• the connecting pieces which are arranged in the square window between the metal plates with the inner edges of which they are welded and the element through which they are tightly connected can be arranged in many ways.
• these connecting pieces comprise a plate parallel to the bearing wall bound to the periphery of the through element and extending around the main body at the same level as the inner face of the crown, as well as plates closure whose inner edges are welded to this plate.
• Other configurations are possible to achieve sealing around the through element, for example by means of a flange carried by the through element and whose downwardly flanged edge is welded to one or more metal plates of closure surrounding the through element.
• a tight connection using such a collar between a metal membrane and a rod passing through this membrane is for example illustrated in FR-A-2973098 or FR-A-2413260.
• such a sealed and thermally insulating tank may have one or more of the following characteristics.
• said thermally insulating barrier is a secondary thermally insulating barrier retained against the carrier structure
• said sealing membrane is a secondary sealing membrane carried by the secondary thermally insulating barrier
• the vessel wall further comprising a primary thermally insulating barrier resting against the secondary sealing membrane and a primary sealing membrane carried by the primary thermally insulating barrier and intended to be in contact with the fluid contained in the tank.
• the through element may comprise a support leg for equipment intended to be placed in the tank, or a sealed pipe defining a passage between the internal space of the tank and the outside of the tank, or a sump structure.
• a tank may be part of an onshore storage facility, for example to store LNG or be installed in a floating structure, coastal or deepwater, including a LNG carrier, ethannel, a floating storage and regasification unit (FSRU), a floating production and remote storage unit (FPSO) and others.
• a vessel for transporting a fluid comprises a double hull and a said tank disposed in the double hull.
• the invention also provides a method for loading or unloading such a vessel, in which a fluid is conveyed through isolated pipes from or to a floating or land storage facility to or from the tank of the vessel. ship.
• the invention also provides a transfer system for a fluid, the system comprising the abovementioned vessel, insulated pipes arranged to connect the vessel installed in the hull of the vessel to a floating or ground storage facility. and a pump for driving fluid through the insulated pipelines from or to the floating or land storage facility to or from the vessel vessel.
• Insulating panels and corrugated metal sheets have rectangular shapes of dimensions equal to integer multiples of the corrugation interval, these dimensions being as far as possible standardized to form a repeating periodic pattern over large areas. - The edges of the corrugated metal sheets are offset from the edges of the insulating panels that support the corrugated metal sheets.
• edges of the corrugated metal sheets of the secondary membrane are aligned with the edges of the primary insulating panels which cover them.
• the undulations of corrugated metal sheets of the secondary membrane are protruding outwardly of the vessel and are offset from the edges of the secondary insulating panels that support them.
• An edge of a corrugated metal sheet is at a distance of 0.5% from the adjacent corrugation parallel to said edge, where io denotes the corrugation interval.
• FIG. 1 is a sectional view of a sealed and thermally insulating tank liquefied natural gas storage at a corner area between two walls.
• FIG. 2 is a perspective view, cut away, of a wall of the tank in a standard area.
• FIG. 3 is a plan view of the inner face of a bottom wall of the tank in a singular area through which passes a support leg, showing the secondary insulating barrier around the support foot without bridging elements.
• FIG. 4 is a half-perspective view in section of the support leg, the section being formed along the axis IV-IV of Figure 3.
• Figure 5 is a view similar to Figure 3, further showing bridging elements of the secondary insulating barrier.
• FIG. 6 is a view similar to Figure 3, further showing a secondary sealed membrane of the vessel wall around the support foot.
• Figure 7 is a view similar to Figure 3, further showing the primary insulating barrier of the vessel wall around the support foot.
• FIG. 8 is an enlarged sectional view of a detail of the support foot and the primary insulating barrier along the axis VIII-VIII of FIG. 4.
• Figure 9 is a view similar to Figure 3, further showing the primary waterproof membrane of the vessel wall around the support foot.
• FIG. 10 is a cutaway schematic representation of a tank of a LNG carrier comprising a sealed and thermally insulating tank for storing a fluid and a loading / unloading terminal for this tank.
• the terms “external” and “internal” are used to define the relative position of one element relative to another, with reference to the interior and exterior of the vessel.
• longitudinal direction a rectangular parallelepipedic element, the direction corresponding to the larger dimension of the rectangle.
• each wall of the tank comprises, from the outside to the inside of the tank, a secondary heat-insulating barrier 1 comprising insulating panels 2 juxtaposed and anchored to a carrier wall 3 by secondary retaining members 8, a membrane of secondary seal 4 carried by the insulating panels 2 of the secondary thermally insulating barrier 1, a primary thermally insulating barrier 5 comprising insulating panels 6 juxtaposed and anchored to the insulating panels 2 of the secondary thermally insulating barrier 1 by primary retaining members 19 and a primary waterproofing membrane 7, carried by the insulating panels 6 of the primary thermally insulating barrier 5 and intended to be in contact with the liquefied natural gas contained in the tank.
• the carrier wall 3 may in particular be a self-supporting metal sheet or, more generally, any type of rigid partition having appropriate mechanical properties.
• the carrier wall 3 may in particular be formed by the hull or the double hull of a ship. As sketched in FIG. 1, a plurality of carrier walls 3 typically serve to form a bearing structure having the general shape of the vessel, usually a polyhedral shape.
• the secondary thermally insulating barrier 1 comprises a plurality of insulating panels 2 anchored on the carrier wall 3 by means of resin cords, not shown, and / or studs 8 welded to the carrier wall 3.
• the insulating panels 2 have substantially a shape rectangular parallelepiped.
• the insulating panels 2 each comprise an insulating polymer foam layer 9 sandwiched between an internal rigid plate 10 and an external rigid plate 11.
• the rigid plates, internal 10 and external 1 are, for example plywood boards bonded to said layer of insulating polymer foam 9.
• the insulating polymer foam may in particular be a polyurethane-based foam.
• the polymer foam is advantageously reinforced by glass fibers contributing to reduce its thermal contraction coefficient.
• the insulating panels 2 are juxtaposed in parallel rows and separated from each other by interstices 12 ensuring a functional play assembly.
• the interstices 12 are filled with a heat insulating lining 13, shown in Figures 2, such as glass wool, rock wool or flexible synthetic foam open cell for example.
• the heat-insulating lining 13 is advantageously made of a porous material so as to provide gas flow spaces in the interstices 12 between the insulating panels 2.
• the interstices 12 have, for example, a width of the order of 30 mm.
• the inner plate 10 has two series of grooves 14, 15, perpendicular to each other, so as to form a network of grooves.
• Each of the series of grooves 14, 15 is parallel to two opposite sides of the insulating panels 2.
• the grooves 14, 15 are intended for receiving corrugations, protruding towards the outside of the tank, formed on the metal sheets of the secondary sealing membrane 4.
• each inner plate 10 has three grooves 14 extending in the longitudinal direction of the insulating panel 2 and nine grooves 15 extending in the transverse direction of the insulating panel 2.
• the grooves 14, 15 completely cross the thickness of the inner plate 10 and thus open at the level of the insulating polymeric foam layer 9. Moreover, the insulating panels 2 comprise in the zones of intersection between the grooves 14, 15, release openings 16 formed in the layer of insulating polymer foam 9. The clearance orifices 16 allow the housing of the node zones formed at the intersections between the corrugations of the metal sheets of the secondary sealing membrane 4.
• the inner plate 10 is equipped with metal plates 17, 18 for anchoring the edge of the corrugated metal sheets of the secondary sealing membrane 4 on the insulating panels 2.
• the metal plates 17, 18 extend in two directions. perpendicular directions which are each parallel to two opposite sides of the insulating panels 2.
• the metal plates 17, 18 are fixed to the inner plate 10 of the insulating panel 2, by screws, rivets or staples, for example.
• the metal plates 17, 18 are placed in recesses formed in the internal plate 10 of such so that the inner surface of the metal plates 17, 18 is flush with the inner surface of the inner plate 10.
• the inner plate 10 is also equipped with threaded studs 19 projecting towards the inside of the tank, and intended to ensure the fixing of the primary thermally insulating barrier 5 on the insulating panels 2 of the secondary thermally insulating barrier 1.
• three studs 19 are placed along the longitudinal line formed by the plates 17, namely a stud 19 is placed at the intersection between the line formed by the plates 17 and the line formed by the plates 18 and two studs are placed equidistantly on both sides of it.
• the insulating panels 2 are provided with cylindrical wells 20, shown in FIG. 2, passing through the insulating panels 2 over their entire thickness and arranged at the of each of the four corners of the insulating panels 2.
• the cylindrical wells 20 have a change of section, not shown, defining bearing surfaces for nuts cooperating with the threaded ends of the studs 8.
• the inner plate 10 has along its edges, in each interval between two successive grooves 14, 15, a recess receiving bridging plates 22 which are each arranged astride between two insulating panels 2 adjacent, stepping over the interstice 12 between the insulating panels 2.
• Each bridging plate 22 is fixed against each of the two adjacent insulating panels 2 so as to oppose their mutual spacing.
• the bridging plates 22 have a rectangular parallelepipedal shape and consist for example of a plywood plate.
• the outer face of the bridging plates 22 is fixed against the bottom of the recesses 21.
• the depth of the recesses 21 is substantially equal to the thickness of the bridging plates 22 so that the inner face of the bridging plates 22 reaches substantially at the level of the bridging plates 22. other flat areas of the inner plate 10 of the insulation board.
• the bridging plates 22 are able to ensure continuity in the carrying of the secondary sealing membrane 4.
• a plurality of bridging plates 22 extend along each edge of the inner plate 10 of the insulating panels 2, a bridge plate 22 being disposed in each gap between two adjacent grooves 14, 15 of a series of parallel grooves.
• the bridging plates 22 may be fixed against the inner plate 10 of the insulating panels 2 by any appropriate means.
• the combination of the application of an adhesive between the outer face of the bridging plates 22 and the inner plate 10 of the insulating panels 2 and the use of mechanical fasteners, such as staples allowing pressurization of the bridging plates 22 against the insulating panels 2, was particularly advantageous.
• the secondary waterproofing membrane 4 comprises a plurality of corrugated metal sheets 24 each having a substantially rectangular shape of dimensions equal to the dimensions of an insulating panel 2.
• the corrugated metal sheets 24 are arranged offset from the insulating panels 2 of FIG. the secondary thermally insulating barrier 1 such that each of said corrugated metal sheets 24 extends jointly on four adjacent insulating panels 2.
• Each corrugated metal sheet 24 has a first series of parallel corrugations 25 extending in a first direction and a second series of parallel corrugations 26 extending in a second direction.
• the directions of the series of corrugations 25, 26 are perpendicular.
• Each of the series of corrugations 25, 26 is parallel to two opposite edges of the corrugated metal sheet 24.
• the corrugations 25, 26 protrude outwardly of the vessel, that is to say in the direction of the carrier wall 3.
• the corrugated metal sheet 24 has between the corrugations 25, 26, a plurality of planar surfaces. At each crossing between two corrugations 25, 26, the metal sheet has a node area having an apex projecting outwardly of the vessel.
• the corrugations 25, 26 corrugated metal sheets 24 are housed in the grooves 14, 15 formed in the inner plate 10 of the insulating panels 2.
• the corrugated metal sheets 24 adjacent are welded together overlap.
• the anchoring of the corrugated metal sheets 24 on the metal plates 17, 18 is achieved by pointing welds.
• the corrugated metal sheets 24 comprise along their longitudinal edges and at their four corners cutouts 28 allowing the passage of the pins 19 for fixing the primary heat-insulating barrier 5 on the secondary thermally insulating barrier 1.
• Two cutouts 28 are located along each longitudinal edge, respectively one third and two thirds of the length of corrugated metal sheet 24.
• the corrugated metal sheets 24 are, for example, made of Invar®: that is to say an alloy of iron and nickel whose expansion coefficient is typically between 1, 2.10 e and 2.10 s K ' or in a high manganese iron alloy whose expansion coefficient is typically of the order of 7.10 "6 K " 1 .
• the corrugated metal sheets 24 may also be made of stainless steel or aluminum.
• the primary thermally insulating barrier 5 comprises a plurality of insulating panels 6 of substantially rectangular parallelepiped shape having dimensions equal to the dimensions of an insulating panel 2, except for the thickness which may be different, preferably smaller than that of the insulating panel 2
• the insulating panels 6 are here offset with respect to the insulating panels 2 of the secondary thermally insulating barrier 1 so that each insulating panel 6 extends over four insulating panels 2 of the secondary thermally insulating barrier 1.
• the insulating panels 6 of the primary thermally insulating barrier 5 and the insulating panels 2 of the secondary thermally insulating barrier 1 are oriented so that the longitudinal directions of the insulating panels 2, 6 are parallel to each other.
• the insulating panels 6 comprise a structure similar to that of the insulating panels 2 of the secondary thermally insulating barrier 1, namely a sandwich structure consisting of a layer of insulating polymer foam sandwiched between two rigid plates, for example plywood.
• the inner plate 30 of an insulating panel 6 of the primary thermally insulating barrier 5 is equipped with metal plates 32, 33 for anchoring the corrugated metal sheets of the primary waterproofing membrane 7.
• the metal plates 32, 33 are extend along two perpendicular lines which are each parallel to two opposite edges of the insulating panel 6.
• the metal plates 32, 33 are fixed in recesses formed in the inner plate 30 of the insulating panel 6 and fixed thereto by screws, rivets or staples for example.
• the inner plate 30 of the insulating panel 6 is provided with a plurality of relaxation slots 34 allowing the primary waterproofing membrane 7 to deform without imposing excessive mechanical stresses on the insulating panels 6.
• relaxation slots are described in particular in document FR 3001945.
• each insulating panel 6 of the primary thermally insulating barrier is fastened to the insulating panels 2 of the secondary thermally insulating barrier by means of the threaded studs 19.
• each insulating panel 6 comprises a plurality of cutouts 35 along its lengths. edges and at its corners, inside which extends a threaded stud 19.
• the outer plate of the insulating panels 2 overflows inside the cutouts 35 so as to form a bearing surface for a retaining member which comprises a threaded bore threaded onto each threaded bolt 19.
• the retaining member comprises lugs housed inside the cutouts 35 and bearing against the portion of the outer plate projecting inside the cutout 35 so that sandwiching the outer plate between a tab of the retaining member and an insulating panel 2 of the secondary heat-insulating barrier 1 and thus ensuring the fixation of each an insulating panel 6 on the insulating panels 2 that it overlaps.
• the primary thermally insulating barrier 5 comprises a plurality of closure plates 38 making it possible to complete the bearing surface of the primary waterproofing membrane 7 at the cutouts 35.
• the primary waterproofing membrane 7 is obtained by assembling a plurality of corrugated metal sheets 39.
• Each corrugated metal sheet 39 has a substantially rectangular shape of dimensions equal to the dimensions of an insulating panel 2 or 6.
• Each corrugated metal sheet 39 comprises a first series of parallel corrugations 40, said high, extending in a first direction corresponding to the largest dimension of the corrugated metal sheet, and a second series of parallel corrugations 41, said low, extending in a second direction perpendicular to the first series.
• the corrugations 40, 41 project inwardly of the vessel.
• the corrugated metal sheets 39 are, for example, made of stainless steel or aluminum. In a non-illustrated embodiment, the first and second series of corrugations have identical heights.
• Each corrugated metal sheet 39 is straddling four insulating panels 6 so that each edge of the corrugated metal sheet 39 covers a line of metal plates 32 or 33 carried by the panel 6 sub- Underlying. Adjacent corrugated metal sheets 39 are welded together. The anchoring of the corrugated metal sheets 39 on the metal plates 32 and 33 is achieved by pointing welds.
• each edge of a corrugated metal sheet 24 or 39 is located substantially midway between two adjacent parallel corrugations of the secondary or primary membrane. This position of the sheet edge can be modified locally to make fine adjustments.
• FIG. 3 shows the secondary heat-insulating barrier 1 in the singular zone, which forms a square-shaped ring around the support foot 50.
• This ring has outer sides measuring substantially 910 which are parallel to the first direction X and the second direction respectively. Y direction of the plane of the supporting wall.
• the crown defines at its center a square window 51 whose sides measure substantially 30 and which are also parallel to the X direction and the Y direction respectively of the plane of the supporting wall.
• the support foot 50 passes through the thermally insulating barrier 1 in said square window 51.
• the square-shaped ring of the thermally insulating barrier 1 consists of two long insulating panels 2a and 2b having a width of 3io in the first direction X and a length of 9io in the second direction Y and two short insulating panels 2c and 2d having a width of 3io in the first direction and a length of 3io in the second direction.
• the long insulating panels 2a and 2b are arranged in alignment with each other in the first direction X spaced by a distance of 3o in the first direction X to delimit the square window 51 in the first direction.
• the short insulating panels 2c and 2d are arranged between the two long insulating panels 2a and 2b in alignment with one another according to the second Y direction and spaced a distance of 3io in the second direction Y to define the square window 51 in the second direction Y.
• the thermally insulating barrier consists entirely of rows of insulating panels having a width of 30 in the first direction, which facilitates the connection to the adjacent areas of the tank wall, since such rows also exist in the standard area of the tank wall.
• the support leg 50 comprises in particular a main body 52 disposed substantially in the center of the square window 51 and extending in the thickness direction of the vessel wall, a first plate 53 parallel to the carrier wall 3 connected to the periphery of the main body and extending around the main body 52 at the same level as the inner face of the ring, and a second plate 54 parallel to the wall carrier 3 bound to the periphery of the main body 52 and extending around the main body 52 at the same level as the inner face of the primary insulating barrier.
• the main body 52 forms a support leg having a first end portion bearing against the bearing wall 3 and a second end portion projecting into the vessel to support the equipment away from the vessel wall.
• the main body 52 here has a circular section of revolution shape, with a frustoconical lower portion 52a which is connected at its smaller diameter end 52c to a cylindrical upper portion 52b.
• the larger diameter base of the frustoconical portion 52a bears against the bearing wall 3.
• the frustoconical portion 52a extends through the entire thickness of the vessel wall beyond the level of the primary sealing barrier 7.
• Trays 53 and 54 may have different shapes.
• the plate 53 has a square shape fitted to the window 51 by means of a mounting clearance, while the plate 54 has a circular shape of smaller diameter.
• the plate 53 is extended, inside the frustoconical lower part
• the plate 54 is extended, inside the lower part frustoconical 52a, by an inner plate 54a which separates the primary portion 56 of an end portion 57 in communication with the interior space of the tank.
• the secondary portions 55 and primary 56 of the interior space of the main body 52 are filled with non-structural insulating materials such as glass wool, to limit heat conduction.
• a non-structural insulating liner 58 is also arranged between the plate 54 and the plate 53.
• insulating blocks with a sandwich structure 60 are positioned under the four corners of the plate 53 between the plate 53 and the carrier wall 3 as well as insulating non-structural fittings 59.
• each of these secondary insulating panels 2a, 2b, 2c, 2d is associated with the adjacent secondary insulating panels by means of a plurality of bridging elements 22, represented 5.
• Each bridging element 22 is arranged astride between the long secondary insulating panel 2a or 2b and the adjacent short secondary insulating panel 2c or 2d and is fixed to the internal face of the two secondary insulating panels so that oppose mutual spacing of said secondary insulating panels.
• the plate 53 of the through element having a square shape has a recess 61 along the outer edges of its four sides. Insulating panels 2a, 2b, 2c and 2d having recesses 62 along the four inner edges of the square crown.
• Bridging elements 63 are placed astride the insulating panels 2a, 2b, 2c and 2d and the plate 53, the bridging elements 63 being placed on the bottom of the recesses 61 of the plate 53 on the one hand and the recesses 62 on the insulating panels 2a, 2b, 2c and 2d on the other hand.
• the thickness of the bridging elements 63 is substantially equal to the depth of said unhitching so as to provide a flat support surface for closure plates, belonging to the secondary waterproof membrane as will be described below.
• the bridging elements 63 are preferably simply placed without being connected to the plate 53 or to the insulating panels 2a, 2b, 2c and 2d. This lack of connection allows a slight mobility of the bridging elements 63 in response to thermal deformation differences between the insulating panels 2a, 2b, 2c and 2d and the support leg 50.
• a first plurality of anchor plates 17a, 18a, 17b and 18b are disposed on the inner face of the ring along the four outer sides of said ring. The distance between each anchor plate 17a, 18a, 17b and 18b of the first plurality and the outer side that it runs being equal to the corrugation interval.
• the corrugated metal sheets of the secondary sealing membrane 4 comprise two oblong rectangular metal plates 24a and 24b 3I wide according to FIG. the first direction X and 710 long in the second direction Y, which are symmetrical to one another with respect to an axis of symmetry B parallel to the second direction passing through the center of the square window, said second axis of symmetry.
• Each rectangular scalloped metal plate 24a, 24b has three outer edges arranged in line with the first plurality of anchor plates 17a, 18a, 17b and 18b and welded to the first plurality of anchor plates; and an inner edge 29a, 29b having a notch formed to avoid cutting the square window 51.
• the notch has a width equal to 1 io in the first direction X and a length equal to 3io in the second direction Y so that the indented portion of the inner edge runs along the square window 51.
• the corrugated metal sheets of the secondary sealing membrane 4 also comprise two metal catch-up plates 24c and 24d disposed between the non-indented portions 29b of the inner edges of the two indented rectangular metal plates 24a and 24b.
• the two metal catch-up plates 24c and 24d are symmetrical to one another with respect to an axis of symmetry A parallel to the first direction passing through the center of the square window, said first axis of symmetry.
• Each metal catch plate 24c, 24d is 1 io wide in the first direction X and 210 long in the second direction Y and has a corrugation 25a aligned on said second axis of symmetry B.
• the inner face of the crown forming the secondary insulating barrier also carries a line of anchor plates 17c parallel to the second direction Y which extends on either side of the window square 51 and which is shifted from the left side of the second axis of symmetry B by a distance less than 1 io, here 1 ⁇ 2 io.
• each metal catch plate 24c and 24d in addition to being welded to the inner edge 29b of a first of the two scalloped rectangular metal plates 24a, is welded to the line of plates anchor 17c to be retained on the inner face of the crown, while the second longitudinal edge of each metal catch plate 24c and 24d is welded to the inner edge 29b of the second rectangular metal plate indented 24b without being retained on the face internal of the crown.
• each metal catch plate 24c, 24d along the second axis of symmetry B is not blocked on both sides and can therefore work in response to thermal and mechanical stresses.
• the catching metal plates 24c and 24d thus extend the second rectangular metal plate notched 24b in the first direction.
• the line of anchor plates 17c is symmetrical with respect to the first axis of symmetry A.
• a thermal protection coating 91 is disposed on the internal face of said ring at a position symmetrical with the line of anchor plates 17c with respect to the second axis of symmetry B, to avoid degrading the inner face by performing the welding between each metal catch plate 24c, 24d and the second rectangular metal plate notched 24b.
• the connecting pieces of the secondary waterproof membrane 4 comprise closure plates 64a, 64b disposed in the window 51 between the plate 53 and the corrugated metal sheets 24a, 24b, 24c, 24d.
• Each closure plate 64a, 64b has a first edge welded to the plate 53 around the main body 52 and a second edge welded to a second plurality of anchor plates around the square window.
• the second plurality of anchor plates 17d, 18d, visible in Figure 3 or 5 is disposed on the inner face of said ring along the four inner sides of the ring, so as to follow the edges of the square window 51
• the notched portion 29a of the inner edge of each scalloped rectangular metal plate 24a and 24b and the inner side edge of each metal catch plate 24c and 24d are sealingly welded to the closure plates 64a and 64b.
• the closure plates 64a and 64b here have respective shapes in C and D asymmetrical.
• the closure plates can be cut in various ways to seal the corrugated metal sheets 24a, 24b, 24c, 24d to the plate 53 all around the main body 52.
• a plurality of metal tip pieces 65 are welded to the closure plates 64a and 64b and disposed at intersections between the second edge of each closure plate and each of the three corrugations 25a, 25b of the first series and the three corrugations 26a of the second series which terminate on the indented portion 29a of the inner edge of each rectangular indented metal plate 24a and 24b and on the inner side edge of each metal catch plate 24c, 24d all around the square window 51, so as to close the terminations of said undulations.
• the corrugations 25a, 25b and 26a meeting the closure plates 64a, 64b are sealingly closed with the end pieces 65.
• the end pieces 65 each comprise a two-piece flange welded on the closure plate and a shell welded in a ripple-tight manner at its interruption.
• the corrugated metal sheets of the waterproofing membrane further comprise a rectangular metal plate 24e 2 10 in the first direction X and 710 long in the second direction Y, which is juxtaposed with the second plate rectangular metal scallop 24b away from the support foot 50 in the first direction X and arranged in alignment with the second rectangular metal plate notch 24b in the first direction X.
• this plate 24e could also be placed on the other side, namely juxtaposed to the first rectangular metal plate notched 24a.
• the corrugated metal sheets 24a, 24b, 24c, 24d and 24e of the secondary waterproofing membrane 4 form a pattern of dimensions 910 in the first direction X, which facilitates the connection to the adjacent areas of the wall. tank, especially when they are formed of insulating panels 2 and rectangular sheets 24 of dimensions 3io in the first direction X.
• the undulations of the metal sheets 24a, 24b, 24c, 24d and 24e protrude outwardly of the tank towards the supporting structure, the internal face of the secondary insulating panels 2a, 2b, 2c, 2d having grooves 14 and 15 perpendicular receiving corrugations 25 and 26 metal sheets 24a, 24b, 24c, 24d and 24e.
• 2b, 2c, 2d forming the square ring bear two series of three anchoring members 19a, 19b, 19c arranged on the plates 18a, 18b of the first plurality along the two edges of the square ring parallel to the first direction X.
• the two sets of three anchoring members 19a, 19b, 19c are spaced 710 and symmetrical to each other with respect to the first axis of symmetry X.
• the three anchoring members 19a, 19b, 19c of each series are disposed respectively at 1 ⁇ 10, 4 ⁇ and 7 ⁇ of an edge of the square ring parallel to the second direction Y, so that the series of three anchoring members is asymmetrical with respect to the second axis of symmetry B.
• the anchoring members 19c do not coincide with the corners of the metal sheet 24b. This is due to the symmetrical construction of the secondary insulating barrier 1 and the secondary membrane 4 around the support foot 50, which do not allow to place primary insulating panels so that their edges are both in alignment with all the edges of the secondary metal sheets they cover and offset with all the edges of the secondary insulating panels to which they are anchored. This is solved by derogating locally from the construction principles of the standard zone. The alignment of the corners between the primary insulating panels and the sheets secondary metal can however be restored to the outer longitudinal edge of the metal sheet 24e, as shown in Figure 7.
• the primary thermally insulating barrier 5 comprises two primary insulating panels 6a, 6b of rectangular parallelepipedal shape having a width of 3io in the first direction X and a length of 710 in the second direction Y.
• a first of said primary insulating panels 6a has four corners coinciding with the first 19a and second 19b anchors of each series and is anchored to said first and second anchoring members 19a, 19b of each series.
• a second one of said primary insulating panels 6b has its four corners coinciding with the second 19b and the third 19c anchors of each series and is anchored to said second and third anchors 19b, 19c of each series.
• the primary thermally insulating barrier 5 can be made with insulating panels of width 3io, which facilitates the connection with the adjacent areas of the tank wall.
• a large number of the edges of the primary insulating panels coincide with the anchor plates 17a, 18a, 17b, 18b of the first plurality, which makes it possible to use anchoring members 19a, 19b, 19c firmly attached to said plates for anchoring primary insulation panels.
• the anchoring of the primary panels 6a, 6b only by the four corners could be insufficient, depending on the mechanical stresses to be endured.
• Each of the two primary insulating panels 6a, 6b has a respective cutout 23a, 23b in its edge turned on the side of the through element, the cutout 23a of the first primary insulating panel 6a having a width less than or equal to 1 io in the first direction X, and the cutout 23b of the second primary insulating panel 6b having a width less than or equal to 2o in the first direction X.
• Each of the two cutouts 23a, 23b has a length less than or equal to 30 in the second direction and is symmetrical relative to at the first axis of symmetry A.
• cutouts 23a, 23b of the primary insulating panels 6a, 6b do not exceed the limits of the underlying square window 51, it is possible to manufacturing the primary membrane with corrugations whose interruptions at said cutouts are less than the interruptions of the ondulations of the secondary membrane at the level of the square window.
• the cutouts 23a, 23b have concentric circular arc shapes with the main body 52 and having the same radius corresponding to the outer radius of the circular plate 54 by means of a set of mounting.
• the plates 17a of the first plurality also carry a series of anchoring members 19e disposed along the outer longitudinal edge, opposite said cutout 23a, of the first primary insulating panel 6a, for example two anchoring members 19e respectively spaced apart of the corners of the first primary insulating panel 6a and symmetrical to each other with respect to the first axis of symmetry A.
• the outer longitudinal edge of the first primary insulating panel 6a is also anchored to the series of anchors 19th.
• At least one anchoring member 19f is fixed on the plate 53 of the support leg 50 on the side of the second primary insulating panel 6b, at inside the cutout 23b of the inner longitudinal edge of the second primary insulating panel 6b.
• Two anchoring members 19 f are visible in Figures 5 and 7. The second primary insulating panel 6b is thus anchored to the two anchoring members 19f.
• the detailed structure of the fastener for anchoring the second primary insulating panel 6b to the anchoring member 19f is shown in FIG. 8.
• the primary insulating panels 6a, 6b have a sandwich structure consisting of a layer of foam insulating polymer 101 sandwiched between two rigid plates 102, 103.
• the second primary insulating panel 6b has an elongate well 66 passing through the inner rigid plate 102 and the insulating polymer foam layer 101 of the second primary insulating panel to discover a surface area internal 67 of the outer rigid plate 103.
• An anchoring piece 104 is firstly fixed to the anchor member 19f of the plate 53 of the through element and secondly resting on the inner surface area 67 of the inner rigid plate for anchoring the second primary insulating panel 6b.
• the anchor 104 comprises here: a horizontal lug 104a traversed by the anchoring member 19f,
• a nut 105 presses on the horizontal lug 104a via Belleville washers 106.
• the corrugated metal sheets of the primary waterproof membrane 7 around the support foot 50 comprise two primary notched rectangular plates 39a and 39b having a width of 30 in the first direction X and a length of 910 in the second direction Y and generally symmetrical. one of the other relative to the second axis of symmetry B.
• Each of the two primary indented rectangular plates 39a and 39b is generally symmetrical with respect to the first axis of symmetry A. In fact, the edges of the plates 39a and 39b intended to be welded are slightly asymmetrical because of the recoveries made.
• Each of the two primary indented rectangular plates 39a and 39b having an inner longitudinal edge 68 having a notch to bypass the through element, said notch having a width of less than 1.5% in the first direction X and a length of less than 30 in the second Y direction so that the indented portion 68a of the inner longitudinal edge 68 interrupts two corrugations 41a of the first series and a corrugation 40a of the second series of each two primary indented rectangular plates 39a and 39b.
• each primary notched rectangular plate 39a and 39b is sealingly welded to connecting pieces sealingly attached to the through member around the support leg 50 at the inner face of the panels.
• the sealed connection between the primary indented rectangular plates 39a and 39b and the circular plate 54 can be realized similarly to the teaching of WO-A-2011/157915, with two primary closure plates 82 and eight end pieces 83.
• a third rectangular parallelepiped-shaped primary insulating panel 6c having a width of 30 in the first direction X and a length of 710 in the second direction Y is juxtaposed with the second primary insulating panel 6b as opposed to first primary insulation board 6a.
• the inner face of the first, second and third primary insulating panels 6a, 6b, 6c carries metal anchor plates for anchoring the primary indented rectangular plates 6a and 6b, the anchor metal plates comprising:
• first metal anchoring plates 32a disposed on the second primary insulating panel along the second axis of symmetry B for anchoring the non-indented portions of the inner longitudinal edge 68 of the two primary indented rectangular plates 6a, 6b,
• second metal anchoring plates 32b disposed on the first primary insulating panel 6a along a line parallel to the second axis of symmetry B at a distance of 30 from the first anchoring metal plates 32a for anchoring the outer longitudinal edge of a first of the two primary indented rectangular plates 39a,
• third metal anchor plates 32c disposed on the third primary insulating panel 6c along a line parallel to the second axis of symmetry B at a distance of 30 from the first metal anchor plates 32a to anchor the outer longitudinal edge of the second notched rectangular plate 39b primary,
• first and second primary insulating panels 6a, 6b in the form of a square frame concentric with the square window 51 accommodating the support leg 50, for anchoring the notched portions 68a of the inner longitudinal edge of the two primary indented rectangular plates 39a, 39b.
• the top of Figure 7 also partially shows three primary insulating panels 6f of an area adjacent to the singular area.
• the corrugated metal sheets of the primary waterproof membrane further comprise a narrow rectangular plate 39c having a width of 1 io in the first direction X and a length of 910 in the second direction Y juxtaposed to the second plate notched rectangle primary 39b opposite the first notched rectangular primary plate 39a.
• Fifth anchor metal plates 32e are disposed on the third primary insulating panel 6c along a line parallel to the second axis of symmetry B at a distance of 1 io from the third anchor metal plates 32c to anchor the outer longitudinal edge. narrow rectangular plate 39c.
• the corrugated metal sheets 39a, 39b, 39c and 24e of the secondary sealing membrane 4 form around the support foot 50 a network of corrugations 40, 41 regular and symmetrical with respect to the two axes of symmetry A and B.
• the narrow rectangular plate 39c makes it possible to realign, in the first direction X, the outer longitudinal edge with the edges of the primary corrugated metal sheets of an adjacent standard zone, which facilitates the connection of the singular zone to the adjacent areas of the tank wall, which are formed of insulating panels 6 and rectangular sheets 39 of dimensions 3io in the first direction X.
• the corrugations of the primary waterproofing membrane 7 are shifted by half a corrugation interval in each of the two directions X and Y with respect to the corrugations of the secondary sealing membrane 4
• the corrugated metal sheets 39a, 39b of the primary sealing membrane are interrupted at an opening formed by the notched portions 68a, said opening interrupting two corrugations 40a, 41a of each series of corrugations of the membrane of primary seal 7, said opening being centered at a position in the middle of two interrupted undulations 40a, 41a of each series of corrugations of the primary sealing membrane.
• the corrugated metal sheets 24a, 24b, 24c, 24d of the secondary sealing membrane 4 are interrupted at an opening, formed in particular by the indented portions 29a and the inner edges of the catch plates 24c and 24d. Said opening interrupts a sequence of three corrugations 25a, 25b, 26a of each series of corrugations of the secondary sealing membrane 4. The opening of the secondary sealing membrane is thus concentric with the opening of the primary sealing membrane, and with the support foot 50.
• the opening of the secondary sealing membrane 4 is centered at a position at the intersection of the second undulation of the sequence of three corrugations 26a belonging to the first series of the secondary sealing membrane and the second corrugation 25a of the sequence of three corrugations 25a, 25b belonging to the second series of the secondary sealing membrane 4.
• the undulations of the secondary metal sheets 24, 24a, 24b, 24c protrude inwardly of the vessel, unlike the corrugations of the previous embodiment, and the primary insulating panels 6, 6a, 6b, 6c each have an outer plate 31 having perpendicular grooves receiving corrugations corrugated metal sheets of the secondary sealing membrane 4.
• the corrugated metal sheets 24, 24a, 24b, 24c of the Secondary sealing membrane 4 also comprises two series of perpendicular corrugations 25, 26.
• the corrugated metal sheets 24, 24a, 24b, 24c are fixed on the inner plate 10 of the insulating panels 2 of the secondary thermally insulating barrier 1 via metal plates.
• the outer plate 31 of the insulating panels 6 of the primary thermally insulating barrier 5 have two series of grooves perpendicular to each other so as to form a network of grooves.
• the grooves are thus intended to receive the corrugations 25, 26, projecting towards the inside of the tank, formed on the corrugated metal sheets 24 of the secondary sealing membrane 4.
• the secondary waterproofing membrane comprises a general structure identical to that shown in FIG. 6, the only difference being the orientation of the undulations towards the inside of the tank.
• the through element is centered on a position corresponding to the intersection between the guidelines of two corrugations perpendicular to each other of the secondary metal plates and has a symmetry of revolution or a symmetry of order N, where N is an even integer, about an axis perpendicular to the carrier wall.
• the main body of the through element is a sealed pipe passing through the wall to define a passage between the interior space of the tank and the outside of the tank, or a structure of sump passing through the tank wall at the bottom of the tank and intended to accommodate a suction member, for example a pump.
• the sump structure may include:
• the multilayer structure of the vessel wall is limited to the secondary waterproof membrane and the secondary insulating barrier, while all primary elements are removed.
• the tank described above can be used in different types of installation, especially in a land installation or in a floating structure such as a LNG tank or other.
• a cutaway view of a LNG tank 70 shows such a sealed and insulated tank 71 of general prismatic shape mounted in the double hull 72 of the ship.
• FIG. 10 also represents an example of a marine terminal comprising a loading and unloading station 75, an underwater pipe 76 and an onshore installation 77.
• the loading and unloading station 75 is a fixed offshore installation comprising a movable arm 74 and a tower 78 which supports the movable arm 74.
• the movable arm 74 carries a bundle of insulated flexible pipes 79 which can be connected to the loading / unloading pipes 73.
• the movable arm 74 can be adapted to all the jigs of LNG.
• a connection pipe (not shown) extends inside the tower 78.
• the loading and unloading station 75 enables the loading and unloading of the LNG tank 70 from or to the shore facility 77.
• liquefied gas storage tanks 80 and connecting lines 81 connected by the underwater line 76 to the loading or unloading station 75.
• the underwater line 76 allows the transfer of the liquefied gas between the loading or unloading station 75 and the onshore installation 77 over a large distance, for example 5 km, which makes it possible to keep the tanker vessel 70 at great distance from the coast during the loading and unloading operations.
• pumps on board the ship 70 and / or pumps equipping the shore installation 77 and / or pumps equipping the loading and unloading station 75 are used.

Applications Claiming Priority (2)

Publications (2)

Family

ID=53524803

Family Applications (1)

Country Status (12)

Cited By (1)

Families Citing this family (12)

Family Cites Families (20)

• 2015
  • 2015-04-20 FR FR1553496A patent/FR3035175B1/fr not_active Expired - Fee Related
• 2016
  • 2016-04-15 SG SG11201708567QA patent/SG11201708567QA/en unknown
  • 2016-04-15 JP JP2017554472A patent/JP6668380B2/ja active Active
  • 2016-04-15 WO PCT/FR2016/050891 patent/WO2016170254A1/fr active Application Filing
  • 2016-04-15 CN CN201680031873.6A patent/CN107690547B/zh active Active
  • 2016-04-15 AU AU2016252093A patent/AU2016252093B2/en not_active Ceased
  • 2016-04-15 US US15/567,465 patent/US10364940B2/en not_active Expired - Fee Related
  • 2016-04-15 EP EP16722289.2A patent/EP3286489B1/de active Active
  • 2016-04-15 RU RU2017136427A patent/RU2697015C2/ru active
  • 2016-04-15 KR KR1020177032983A patent/KR102487424B1/ko active IP Right Grant
  • 2016-04-15 MY MYPI2017703937A patent/MY194019A/en unknown
• 2017
  • 2017-10-18 PH PH12017501883A patent/PH12017501883B1/en unknown

Also Published As

Similar Documents

Legal Events