WO2019145633A1 - Cuve etanche et thermiquement isolante - Google Patents
Cuve etanche et thermiquement isolante Download PDFInfo
- Publication number
- WO2019145633A1 WO2019145633A1 PCT/FR2019/050134 FR2019050134W WO2019145633A1 WO 2019145633 A1 WO2019145633 A1 WO 2019145633A1 FR 2019050134 W FR2019050134 W FR 2019050134W WO 2019145633 A1 WO2019145633 A1 WO 2019145633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating
- longitudinal direction
- sealed
- insulating panels
- panels
- Prior art date
Links
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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
-
- 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
- F17C2203/0358—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
- 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
- F17C2260/03—Dealing with losses
- F17C2260/031—Dealing with losses due to heat transfer
- F17C2260/033—Dealing with losses due to heat transfer by enhancing insulation
-
- 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 invention relates to the field of sealed and thermally insulating tanks, with membranes, for storing and / or transporting fluid, such as a liquefied gas.
- Watertight and thermally insulating membrane tanks are used in particular for the storage of liquefied natural gas (LNG), which is stored at atmospheric pressure at about -163 ° C. These tanks can be installed on the ground or on a floating structure. In the case of a floating structure, the tank may be intended for the transport of liquefied natural gas or to receive liquefied natural gas used as fuel for the propulsion of the floating structure.
- LNG liquefied natural gas
- the document WO2014096600 discloses a sealed and thermally insulating tank for storing liquefied natural gas arranged in a supporting structure and whose walls have a multilayer structure, namely from the outside to the inside of the tank, an insulated secondary heat-insulating barrier. against the supporting structure, a secondary waterproofing membrane which is supported by the secondary heat-insulating barrier, a primary heat-insulating barrier which is supported by the secondary waterproofing membrane and a primary waterproofing membrane which is supported by the thermal barrier primary insulation and which is intended to be in contact with the liquefied natural gas stored in the tank.
- Each thermally insulating barrier comprises a set of insulating panels, respectively primary and secondary, of parallelepiped general shape which are juxtaposed and which thus form a support surface for a respective waterproofing membrane.
- the primary and secondary waterproofing membranes each comprise a continuous sheet of metal strakes, with raised edges, which are welded on parallel welding supports. L-shaped welding supports are fixed in grooves in the insulating panels of the primary or secondary thermally insulating barrier.
- Primary and secondary insulation panels are susceptible to deformation, which can create unevenness between adjacent insulation panels in the thickness direction of the vessel wall. Such deformations are particularly likely to occur due to the effects of the movement of the liquid inside the tank (sloshing effect in the English language) and because of the effects of thermal gradients tending to contract the panels. insulators.
- a minimum gap value must be respected between the adjacent insulating panels, and more particularly between the transverse edges of the panels which are orthogonal to the directions of the welding supports. Indeed, the reduction in the distance between the transverse edges of two adjacent insulating panels leads, due to the differences in level that may be generated between adjacent insulating panels, to increase the angle of deformation of the welding support and the membrane. fixed to said insulating panels which has the effect of increasing the fatigue stresses of the membrane. Also, failing to respect a minimum value of gap, the membrane is likely to suffer damage.
- Each fatigue strength test has about 2000 cycles. During each cycle, a height difference in the thickness direction of the tank wall of the order of a few millimeters between the adjacent transverse edges of the two insulating panels is generated. Such a test is representative of the life of a ship.
- the flat median portions of the strakes of the waterproofing membrane are capable of bending and possibly of cracking, thus creating a leakage fault, -
- the raised edges of the strakes and the junction areas between the raised edges and the flat median portion of the strakes are likely to deform, creating undulations and possibly crack, thereby creating a leak tightness.
- the greater the value of the gap the greater the distance in which the waterproofing membrane is not supported by the insulating panels, which is likely to lead to greater deformations of the membrane. sealing under the pressure of the liquid stored in the tank.
- An idea underlying the invention is to allow a reduction in the width of the interstices between the primary and / or secondary insulating panels adjacent in the longitudinal direction of the welding supports without significantly degrading the fatigue strength of the membrane.
- An idea underlying the invention is to propose a sealed and thermally insulating tank for the storage of a liquefied gas comprising a wall having successively, in a thickness direction of the wall, from the outside to the inside of the the vessel, a thermally insulating barrier and a sealing membrane resting against said thermally insulating barrier;
- the thermally insulating barrier comprising at least two insulating panels each having an upper plate defining a support surface against which the sealing membrane rests, the upper plates of the insulating panels each having a groove in which a welding support is mounted, the grooves of the two insulating panels being aligned and extending in a longitudinal direction; said weld support extending in the longitudinal direction and having a weld wing and an anchor wing inclined with respect to the weld wing; each groove opening at the support surface and having a return in which is housed the anchoring flange of the welding support, the return forming in the respective insulating panel, between the return and the support surface, a portion of retainer against which is retained the anchor wing so as to retain the solder support on said insulating panel;
- the waterproofing membrane comprising at least two metal strakes which extend parallel to the longitudinal direction, on either side of the welding support, said strakes having a middle portion resting against the support surfaces and two raised edges which extend parallel to the longitudinal direction and protrude from the medial portion towards the inside of the tank, one of the raised edges of each of the two strakes being welded to the welding flange of the welding support;
- the weld support is not retained at the thermally insulating barrier at the notch, the weld support and the sealing membrane have greater flexibility to the gap between the insulating panels which makes it possible to limit the stresses exerted on the welding supports and the waterproofing membrane when a height difference is generated between the adjacent primary insulating panels.
- such a tank may have one or more of the following characteristics.
- the two insulating panels each have two transverse edges which are perpendicular to the longitudinal direction, the adjacent transverse edges of the two insulating panels being spaced from each other by a gap which has a width according to the longitudinal direction which is less than 20 mm and preferably less than 10 mm.
- the grooves of the two insulating panels are spaced apart by an interval i whose dimension in the longitudinal direction is between 20 and 70 mm, advantageously between 25 and 45 mm and more particularly between 30 and 40 mm.
- the dimension of the weld support that is not retained at the insulating panels, in the area of the gap between the transverse edges of the insulating panels is between 20 and 70 mm, advantageously between 25 and 45 mm and more particularly between 30 and 40 mm.
- the groove of each of the two insulating panels has one end facing the other insulating panel which is extended by a notch opening at the support surface, each notch being provided at least in the extension, in the longitudinal direction, of said groove and the retaining portion, so that the welding support is not retained at said notch.
- the flexibility gains of the welding support and the sealing membrane are distributed on either side of the gap.
- the or each notch has a dimension n in the longitudinal direction of between 5 mm and 30 mm.
- the or each notch has a depth p which is equal to and preferably greater than that of the grooves. This makes it possible to limit the stresses exerted on the welding support and the sealing membrane, when the transverse edge of the insulating panel having said notch is raised relative to the adjacent transverse edge of the other insulating panel.
- the indentation has a bottom and side walls connecting the bottom to the support surface.
- the bottom of the notch has an inclined slope so that the depth p of the notch decreases in the direction of the groove.
- the side walls of the notch are connected to the groove by chamfers or fillets. Such chamfers or leave guide the solder support to the groove and thus facilitates the introduction of the weld support in the groove.
- the side walls of the notch consist of a flat part and are connected to the groove by a cylindrical part.
- the indentation has a triangular or trapezoidal overall shape which narrows in the direction of the groove.
- At least the upper plate of one of the two insulating panels comprises, along the transverse edge of said insulating panel which is opposite the other insulating panel, a recess, the recess extending perpendicularly. in the longitudinal direction from one end to the other of the upper wall of said insulating panel so that the metal strakes are not supported by the support surface along said transverse edge of the insulating panel.
- the two insulating panels each have two transverse edges that are perpendicular to the longitudinal direction, the upper plate of each of the two insulating panels having, along the transverse edge of said insulating panel which is opposite the other insulation board, a recess; the recess extending perpendicular to the longitudinal direction from one end to the other of said insulating panel so that the strakes are not supported by the support surface along said transverse edge of the insulating panel.
- the recess is arranged so that the top plate is recessed at least in a defined area above a plane which is inclined at an angle of 55 ° with respect to the support surface and which cuts the transverse edge of the insulating panel at a distance, in the thickness direction of the wall, of 6 mm from the support surface.
- the or each recess is formed by a recess, a bevel cut or a rounded formed in the upper plate, along the transverse edge of the insulating panel.
- the or each indentation opens into one of the recesses.
- the or each notch extends to the transverse edge of the respective insulating panel.
- the adjacent transverse edges of the two insulating panels are spaced apart from one another by a gap which has a width in the longitudinal direction which is less than 5 mm, for example of the order of 1 mm.
- the sum of the longitudinal dimension of the recess of each of the two insulating panels and the width of the gap formed between said insulating panels is between 7 and 25 mm.
- the groove has an inverted T-shaped section.
- the welding support has an L shape.
- the upper plate is made of plywood.
- the upper plate has a thickness of between 9 and 15 mm.
- the thermally insulating barrier is a primary thermally insulating barrier and the sealing membrane is a primary waterproofing membrane, the wall comprising, successively, from the outside to the inside of the tank, a thermally insulating barrier.
- secondary insulation anchored to a load-bearing structure, a secondary waterproofing membrane resting against the secondary heat-insulating barrier, the primary heat-insulating barrier and the primary waterproofing membrane.
- the waterproofing membrane is made of a material chosen from stainless steel, iron and nickel alloys whose coefficient of expansion is between 1, 2.10 6 and 2.10 6 K 1 and alloys of iron and manganese with an expansion coefficient of less than 15.10 6 K 1 .
- the welding support is made of a material chosen from stainless steel, iron and nickel alloys whose coefficient of expansion is between 1, 2.10 6 and 2.10 6 K -1 and iron and manganese alloys whose coefficient of expansion is less than 15.10 6 K 1 .
- At least one of the insulating panels comprises a bottom plate, an intermediate plate disposed between the bottom plate and the top plate, a first layer of insulating polymer foam sandwiched between the bottom plate and the intermediate plate and a second layer of insulating polymer foam sandwiched between the intermediate plate and the upper plate.
- At least one of the insulating panels further comprises a bottom plate and carrying webs extending, in the thickness direction of the vessel wall, between the bottom plate and the plate upper and delimiting a plurality of compartments filled with an insulating liner, such as perlite.
- the thermally insulating barrier comprises a plurality of insulating panels which each have an upper plate defining a support surface against which the sealing membrane rests, the upper plates each having one or more grooves in which is mounted a welding support, each end of each groove having a notch opening at the support surface and being formed at least in the extension, in the longitudinal direction, of the groove and the retaining portion, so that the support welding is not retained at said panel in the area of said notch.
- a tank can be part of a land storage facility, for example to store LNG or be installed in a floating structure, coastal or deep water, including a LNG tank, a floating storage and regasification unit (FSRU) , a floating production and remote storage unit (FPSO) and others.
- a vessel for the transport of a cryogenic fluid comprises a double shell and a said tank disposed in the double hull.
- the double shell comprises an inner shell forming the carrying structure of the vessel.
- 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.
- FIG. 1 is a cutaway perspective view of a vessel wall.
- FIG. 2 is a sectional view illustrating a groove in a primary panel, a welding support housed in the groove and strakes that are welded to the weld support.
- FIG. 3 is a perspective view of a primary panel according to a first embodiment.
- FIG. 4 is a detailed perspective view illustrating a primary thermally insulating barrier at the junction between two adjacent primary insulating panels according to the first embodiment.
- - Figure 5 is a detailed view of a notch at a transverse edge of a primary insulating panel according to the first embodiment.
- FIG. 6 is a schematic sectional view of a groove and a notch.
- FIG. 7 is a perspective view of a primary insulating panel according to a second embodiment.
- FIG. 8 is a diagrammatic sectional view illustrating a primary thermally insulating barrier at the junction between two adjacent primary insulating panels according to the second embodiment.
- FIG. 9 is a schematic sectional view illustrating a primary thermal insulation barrier at the junction between two adjacent primary insulating panels according to a variant of the second embodiment.
- FIG. 10 is a schematic sectional view illustrating a primary thermally insulating barrier at the junction between two adjacent primary insulating panels according to another variant of the second embodiment.
- FIG. 11 is a perspective view of a primary insulating panel according to a third embodiment.
- FIG. 12 is a diagrammatic sectional view illustrating a primary thermally insulating barrier at the junction between two adjacent primary insulating panels according to the third embodiment.
- FIG. 13 is a schematic cutaway representation of a tank of LNG tanker and a loading / unloading terminal of this tank.
- a two-dimensional orthonormal coordinate system defined by two x and y axes is used to describe the elements of a wall 1 of the sealed and thermally insulating vessel.
- the x axis corresponds to the longitudinal direction and the y axis corresponds to the transverse direction.
- the longitudinal direction corresponds to the direction in which the strakes and weld supports extend.
- the x axis when the tank is intended to be integrated in the double hull of a ship, the x axis also corresponds to the longitudinal direction of the ship.
- FIG. 1 there is shown the multilayer structure of a wall 1 of a sealed and thermally insulating tank for storing a liquefied fluid, such as liquefied natural gas (LNG).
- a liquefied fluid such as liquefied natural gas (LNG).
- LNG liquefied natural gas
- Each wall 1 of the tank comprises successively, in the direction of the thickness, from the outside to the inside of the tank, a secondary thermally insulating barrier 2 retained to a bearing structure 3, a secondary sealing membrane 4 resting against the secondary thermally insulating barrier 2, a primary thermally insulating barrier 5 resting against the secondary sealing membrane 4 and a primary sealing membrane 6 intended to be in contact with the liquefied natural gas contained in the tank.
- LNG liquefied natural gas
- the supporting structure 3 can in particular be formed by the hull or the double hull of a ship.
- the supporting structure 3 comprises a plurality of walls defining the general shape of the tank, usually a polyhedral shape.
- the secondary thermally insulating barrier 2 comprises a plurality of secondary insulating panels 7 which are anchored on the support structure 3 by means of anchoring devices, as described for example in the document WO2014096600.
- the secondary insulating panels 7 have a parallelepipedal general shape and are arranged in parallel rows.
- each secondary insulating panel 7 comprises three plates, namely a bottom plate 8, an intermediate plate 9 and an upper plate 10 which defines a support surface for the secondary waterproofing membrane. 4.
- the bottom plates 8, 9 intermediate and 10 upper are for example made of plywood.
- Each secondary insulating panel 7 also comprises a first layer of insulating polymer foam 11 sandwiched between the bottom plate 8 and the intermediate plate 9 and a second layer of insulating polymer foam 12 sandwiched between the intermediate plate 9 and the plate.
- the first and second layers of insulating polymer foam 11, 12 are respectively bonded to the bottom plate 8 and intermediate plate 9 and to the intermediate plate 9 and top 10.
- the insulating polymer foam may in particular be a foam-based polyurethane, optionally reinforced with fibers.
- the secondary insulating panels 7 may have another general structure, for example that described in WO2012 / 127141.
- the secondary insulating panels 7 are then made in the form of a box comprising a bottom plate, an upper plate and carrying webs extending, in the thickness direction of the wall 1 of the tank, between the bottom plate. and the upper plate and delimiting a plurality of compartments filled with an insulating liner, such as perlite, glass wool or rock.
- the secondary thermally insulating barrier 2 comprises secondary insulating panels 7 having at least two different types of structure, for example the two aforementioned structures, depending on their area of implantation in the tank.
- the secondary insulating panels 7 have dimensions of the order of 1 130 mm ⁇ 1000 mm.
- the secondary insulating panels 7 are spaced from each other in the transverse direction y by a functional assembly play, for example of the order of 1 mm.
- the secondary insulating panels 7 are spaced from each other in the longitudinal direction x by a gap having for example a width of the order of 60 mm.
- an insulating gasket, not shown, such as glass wool or rock wool is positioned in the gap formed between the transverse edges of the secondary insulating panels 7.
- the secondary waterproofing membrane 4 comprises a continuous sheet of strakes 13, metal, with raised edges which are fixed on the secondary insulating panels 7, as will be detailed later.
- the primary thermally insulating barrier 5 comprises a plurality of primary insulating panels 14 which are anchored to the supporting structure 3 by means of the aforementioned anchoring devices.
- the primary insulating panels 14 have a parallelepipedal general shape. Each of the primary insulating panels 14 is positioned in line with one of the secondary insulating panels 7.
- the primary panels 14 have a length in the longitudinal direction x greater than that of the secondary insulating panels 7, which makes it possible to reduce the dimension of the gap formed between the transverse edges 32 of the primary insulating panels 14.
- the gap between the transverse edges of the primary insulating panels 14 has a width, in the longitudinal direction x, which is less than 20 mm, advantageously less than 10 mm, for example of the order of 8 mm.
- the spacing between the primary insulating panels 14 in the transverse direction is identical to that provided between the secondary insulating panels 7 and corresponds to a functional assembly play of the order of 1 mm.
- the structure of a primary insulating panel 14 is observed according to a first embodiment.
- the primary insulating panel 14 has a multilayer structure similar to that of the secondary insulating panel 7 described above.
- the primary insulating panel 14 comprises successively a bottom plate 15, a first layer of insulating polymer foam 16, an intermediate plate 17, a second layer of insulating polymer foam 18 and an upper plate 19.
- the upper plate 19 defines a surface support member 36 for the primary waterproofing membrane 6.
- the insulating polymer foam may in particular be a polyurethane-based foam, optionally reinforced with fibers.
- the upper plate 19 is for example made of plywood. According to one embodiment, the upper plate has a thickness of between 9 and 15 mm.
- the base plate 15 has grooves 20 for receiving the raised edges of the strakes of the secondary sealing membrane 4.
- the upper plate 19 also has grooves 21 for receiving welding supports for welding the waterproofing membrane primary 6.
- the primary insulating panel 14 is described above by way of example. Also, in another embodiment, the primary insulating panels 14 may have another general structure, for example that described in WO2012 / 127141. In another embodiment, the primary thermally insulating barrier 5 comprises primary insulating panels 14 having at least two different types of structure, for example the two aforementioned structures, depending on their area of implantation in the tank.
- the primary waterproofing membrane 6 comprises a continuous sheet of metal strakes 22, with raised edges. which extend in the longitudinal direction x.
- the strakes 22 are welded by their raised edges to weld supports 23 which extend parallel to each other in the longitudinal direction x and which are fixed in the grooves 21 formed on the upper plates 19 of the primary insulating panels 14.
- the solder support 23 has an L-shaped section and is retained in a groove 21.
- the groove 21 here has an inverted T-shaped section, but may have an L-shaped section.
- the T-shaped section is advantageous in that it can be carried out more simply by means of milling operations.
- the groove has a depth of about 6 mm.
- the welding support 23 has a welding flange 24 and an anchoring wing 25 which are inclined with respect to each other.
- the welding wing 24 and the anchor wing 25 are perpendicular to each other so as to form an L.
- the groove 21 has a portion 26 extending substantially in the thickness direction of the vessel wall 1 and opening at the support surface 36 of the upper plate 19 and at least one return 27 which extends along a plane orthogonal to the thickness direction of the wall 1 of the tank.
- the return 27 thus provides, in the upper plate 19, between the support surface 36 and the return 27 a retaining portion 28.
- the anchoring wing 25 of the welding support is inserted inside the return 27 of the groove 21 while the welding flange 24 passes through the portion 26 extend in the thickness direction of the wall 1 of tank so as to project inwardly of the vessel, beyond the upper plate 19
- the anchoring wing 25 is thus retained against the retaining portion 28, which makes it possible to anchor the welding support 23 on the primary insulating panel 14.
- the grooves 21 of the primary insulating panels 14 are aligned one after the other in the longitudinal direction. Also, a welding support 23 extends in the longitudinal direction x, substantially from one end to the other of the tank wall 1, passing through the grooves 21 aligned with each other of a plurality of primary insulating panels 14.
- the strakes 22 have a medial portion 29 resting against the support surface 36 of the upper plates 19 and two raised edges 30 which extend in the longitudinal direction and protrude from the middle portion 29 towards the inside of the vessel.
- the raised edges 30 of the two strakes 22 which extend on either side of the welding support 23 are welded to the welding flange 24 of said welding support 23.
- the sealed seals between the raised edges 30 and the wings of welding 23 are for example made using a welding machine, as described in the applications FR2172837 or FR2140716.
- the strakes 22 and the welding supports 23 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 6 and 2.10 6 K 1 , in an iron alloy with a high manganese content whose expansion coefficient is typically of the order of 7.10 6 K 1 or in a stainless steel.
- the primary insulating panels 14 are spaced in the longitudinal direction x by a gap 31 having a small width.
- the width of the gap 31 is less than 20 mm, preferably less than 10 mm and for example of the order of 8 mm.
- the grooves 21 extend at the transverse edges 32 of the primary insulating panels 14 by notches 33, one of which is shown in detail in Figures 5 and 6.
- the notch 33 opens out at the support surface 36 and extends in the extension, in the longitudinal direction x, of the groove 21 and the retaining portion 28 so that the anchoring wing 25 of the support 23 is not retained at the primary insulating panel 14 in the zone of said notch 33.
- This allows to reduce the stresses exerted on the welding supports 23 and the raised edges 30 of the strakes 22 when an elevation difference is generated between the adjacent primary insulating panels 14. Therefore, the effects of such an elevation on the fatigue strength of the primary waterproofing membrane 6 and welding supports 23 in the region of the interstices 31 formed between the transverse edges 32 of the primary insulating panels 14 are attenuated.
- the notch 33 has a bottom 34 and two side walls 35 connecting the bottom 34 to the support surface 36.
- the notch 33 has a depth p (illustrated in FIG. 6) in the thickness direction of the tank wall 1 which is greater than that of the groove 21.
- the bottom 34 has a slope which is inclined so that the depth p of the notch 33 decreases from the transverse edge 32 of the primary insulating panel 14 to the groove 21. This limits the stresses exerted on the welding support 23 and the raised edges 30 of the strakes 22, the side of the primary insulating panel 14 which is raised relative to the insulating panel adjacent primer 14 when a height difference is generated between two adjacent primary insulating panels 14.
- the dimension m, represented in FIG. 6, of the notch 33 in the transverse direction y is greater than or equal to the dimension of the groove 21 in the said transverse direction y.
- each side wall 35 of the notch 33 is positioned, in the transverse direction y, beyond one end of the horizontal portion of the groove 21.
- the side walls 35 of the notch 33 are connected each at the edges of the groove 21 through a chamfer or a fillet 37.
- the chamfer or fillet 37 is arranged to guide the welding flange 24 of the welding support 23 towards the vertical portion 26 of the groove 21 during sliding mounting of the welding support 23 inside the groove 21.
- the side walls have a flat portion and connect the groove 21 by a cylindrical portion 37.
- the notch 33 has a generally trapezoid or triangle shape which is oriented such that the notch widens away from the groove 21.
- the dimension n, represented in FIG. 5, of the indentations 33 in the longitudinal direction is advantageously determined as a function of the dimension of the gap 31 formed between the transverse edges 32 of the primary insulating panels 14. It has indeed been found that the length of the zone in which the welding support 23 is not retained at the two adjacent primary insulating panels 14, that is to say corresponding to the dimension of the interval i, shown in FIG. 4, between two grooves 21, should advantageously be between 20 and 70 mm, advantageously between 25 and 45 mm and more particularly between
- the dimension n of the indentations 14 in the longitudinal direction is between 5 mm and 30 mm.
- the dimension n is for example of the order of 13 mm when the gap 31 has a width of the order of 8 mm.
- the upper plate 19 of the primary insulating panels 14 has, in addition to the recesses 33 above, recesses 38.
- a recess 38 is formed along each of the transverse edges 32 and extends in a transverse direction from one end to the other of the primary insulating panel 14.
- the recesses 38 interrupt the support surface 36 so that the primary waterproofing membrane 6 is not supported in the area of said recess 38.
- the recesses 38 thus have the effect of limiting the angle of deformation of the primary waterproofing membrane 6 to the right of the gap 31 between the transverse edges 32 of the primary insulating panels 14 when an elevation difference is generated between the primary insulating panels 14 adjacent.
- the deformations of the primary sealing membrane 6 remain in the elastic range and do not cause irreversible deformations of the primary sealing membrane 6 to the right of the interstices 31, for pressures usually encountered in the tanks.
- the length I that is to say the sum of the longitudinal dimension of the recess 38 of each of the adjacent primary insulating panels and the width of the gap 31 is between 7 and 25 mm and preferably between 8 and 12 mm. Also, for example, for a gap width 31 of the order of 1 mm, the dimension in the longitudinal direction of a recess 38 is between 3 and 12 mm.
- the recesses 38 shown in Figure 8 are recesses.
- the bottom 39 of the recess has a surface parallel to the support surface 36 and is connected to said support surface 36 by a wall which extends substantially in the thickness direction of the wall 1 of the tank.
- the recess has for example a width of between 3 and 12 mm.
- the depth of the recess 38 in the thickness direction of the vessel wall is greater than or equal to the depth of the groove 21, i.e., about 6 mm.
- the depth of the recess 38 is preferably between 8 and 10 mm. Note that, in this embodiment, as in those described below in embodiment with Figures 9 and 10, notches 33, as described above are formed in the upper plate 19 so that the grooves 21 open into the recesses. 38 through said indentations 33.
- FIGS. 9 and 10 illustrate alternative embodiments of the second embodiment of FIGS. 7 and 8. These variant embodiments differ from the variant illustrated in FIG. 8 by the shape of the recess 38.
- the recesses 38 are cut in bevel, in the upper plate 19, along the transverse edges 32 of the primary insulating panels 14.
- the recesses 38 are each formed by means of a rounding formed in the upper plate 19, along the transverse edges 32 of the primary insulating panels 14.
- the length I that is to say the sum of the longitudinal dimension of the recess 28 of each of the adjacent primary insulating panels 14 and the width of the gap 31 is between 7 and 25 mm as in the embodiment of Figures 7 and 8.
- the recess 38 is arranged so that the upper plate 19 is recessed at least in a defined area above a plane which is inclined at an angle of 55 °. relative to the support surface 36 and which intersects the transverse edge 32 of the primary insulating panel 14 at a distance, in the thickness direction of the tank, of 6 mm from the plane of the support surface 36.
- Figures 1 1 and 12 show a third embodiment.
- This embodiment differs from the embodiments described above in relation to FIGS. 7 to 10 in that the upper plates 19 of the primary insulating panels 14 are not equipped with indentations 33 formed in the extension of the grooves 21.
- the grooves 21 open directly into the recesses 38 formed in the upper plate 19, along the transverse edges, 32.
- the dimension in the longitudinal direction of the recesses 38 is chosen such that the dimension of the interval i, in the longitudinal direction, between two successive grooves 21 is advantageously between 20 and 70 mm, advantageously between 25 and 45 mm and more particularly between 30 and 40 mm .
- the width of the gap 31 formed between the transverse edges 32 of the two adjacent primary insulating panels 14 is of the order of 1 mm while the dimension of the recesses 38 in the longitudinal direction x is between 14.5 mm and 29.5 mm, for example of the order of 24.5 mm.
- the secondary insulating panels 7 may also have such arrangements, namely grooves formed in the upper plate which extend through recesses and / or recesses formed in the upper plate, along the transverse edges of the secondary insulating panels 7.
- a broken view of a LNG tank 70 shows a sealed and insulated tank 71 of generally prismatic shape mounted in the double hull 72 of the ship.
- the wall of the tank 71 comprises a primary sealed barrier intended to be in contact with the LNG contained in the tank, a secondary sealed barrier arranged between the primary waterproof barrier and the double hull 72 of the ship, and two insulating barriers arranged respectively between the primary watertight barrier and the secondary watertight barrier and between the secondary watertight barrier and the double hull 72.
- FIG. 13 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 off-shore installation comprising an arm mobile 74 and a tower 78 which supports the movable arm 74.
- the movable arm 74 carries a bundle of insulated flexible pipes 79 that can be connected to the loading / unloading pipes 73.
- the movable arm 74 can be adapted to all gauges LNG carriers .
- a connection pipe 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.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020207024253A KR102614986B1 (ko) | 2018-01-23 | 2019-01-22 | 밀봉되고 단열된 탱크 |
CN201980009135.5A CN111656083B (zh) | 2018-01-23 | 2019-01-22 | 密封隔热罐 |
RU2020122755A RU2761703C1 (ru) | 2018-01-23 | 2019-01-22 | Герметичный и теплоизоляционный резервуар |
PH12020551108A PH12020551108A1 (en) | 2018-01-23 | 2020-07-21 | Sealed, thermally insulating tank |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1850529A FR3077115B1 (fr) | 2018-01-23 | 2018-01-23 | Cuve etanche et thermiquement isolante. |
FR1850529 | 2018-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019145633A1 true WO2019145633A1 (fr) | 2019-08-01 |
Family
ID=62067681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2019/050134 WO2019145633A1 (fr) | 2018-01-23 | 2019-01-22 | Cuve etanche et thermiquement isolante |
Country Status (6)
Country | Link |
---|---|
KR (1) | KR102614986B1 (fr) |
CN (1) | CN111656083B (fr) |
FR (1) | FR3077115B1 (fr) |
PH (1) | PH12020551108A1 (fr) |
RU (1) | RU2761703C1 (fr) |
WO (1) | WO2019145633A1 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2140716A5 (en) | 1971-03-12 | 1973-01-19 | Gaz Transport | Electric welding machine with separate transformer - - for welding raised sheet edges |
FR2172837A2 (en) | 1972-02-24 | 1973-10-05 | Gaz Transport | Electric welding machine - for the raised edges of metal plates |
FR2413260A1 (fr) * | 1977-12-29 | 1979-07-27 | Gaz Transport | Cuve etanche et thermiquement isolante integree a la structure porteuse d'un navire |
WO1989009909A1 (fr) * | 1988-04-08 | 1989-10-19 | Gaz-Transport | Cuve etanche et thermiquement isolante perfectionnee, integree a la structure porteuse d'un navire |
JP2009006797A (ja) * | 2007-06-27 | 2009-01-15 | Osaka Gas Co Ltd | 貯蔵構造 |
WO2012127141A1 (fr) | 2011-03-23 | 2012-09-27 | Gaztransport Et Technigaz | Element calorifuge pour paroi de cuve etanche et thermiquement isolante |
WO2014096600A1 (fr) | 2012-12-21 | 2014-06-26 | Gaztransport Et Technigaz | Cuve etanche et thermiquement isolante |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2691520B1 (fr) * | 1992-05-20 | 1994-09-02 | Technigaz Ste Nle | Structure préfabriquée de formation de parois étanches et thermiquement isolantes pour enceinte de confinement d'un fluide à très basse température. |
FR2798902B1 (fr) * | 1999-09-29 | 2001-11-23 | Gaz Transport & Technigaz | Cuve etanche et thermiquement isolante integree dans une structure porteuse de navire et procede de fabrication de caissons isolants destines a etre utilises dans cette cuve |
JP2008506078A (ja) * | 2004-07-06 | 2008-02-28 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | 液化ガス貯蔵容器 |
JP4616279B2 (ja) * | 2004-12-08 | 2011-01-19 | コリア ガス コーポレイション | 液化天然ガスの保存タンク及びその製造方法 |
KR100499710B1 (ko) * | 2004-12-08 | 2005-07-05 | 한국가스공사 | 선박 내부에 설치되는 액화천연가스 저장용 탱크 구조 및 탱크 제조방법 |
WO2012139600A1 (fr) * | 2011-04-14 | 2012-10-18 | Nordic Yards Wismar Gmbh | Réservoir pour liquides froids ou cryogènes |
RU2533874C1 (ru) * | 2013-09-11 | 2014-11-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли РФ (МИНПРОМТОРГ РОССИИ) | Резервуар из композитных материалов для хранения и транспортирования сжиженных газов и способ его изготовления |
FR3016619B1 (fr) * | 2014-01-17 | 2016-08-19 | Gaztransport Et Technigaz | Cuve etanche et thermiquement isolante comportant des bandes metalliques |
FR3035174B1 (fr) * | 2015-04-15 | 2017-04-28 | Gaztransport Et Technigaz | Cuve equipee d'une paroi presentant une zone singuliere au travers de laquelle passe un element traversant |
-
2018
- 2018-01-23 FR FR1850529A patent/FR3077115B1/fr active Active
-
2019
- 2019-01-22 RU RU2020122755A patent/RU2761703C1/ru active
- 2019-01-22 CN CN201980009135.5A patent/CN111656083B/zh active Active
- 2019-01-22 WO PCT/FR2019/050134 patent/WO2019145633A1/fr active Application Filing
- 2019-01-22 KR KR1020207024253A patent/KR102614986B1/ko active IP Right Grant
-
2020
- 2020-07-21 PH PH12020551108A patent/PH12020551108A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2140716A5 (en) | 1971-03-12 | 1973-01-19 | Gaz Transport | Electric welding machine with separate transformer - - for welding raised sheet edges |
FR2172837A2 (en) | 1972-02-24 | 1973-10-05 | Gaz Transport | Electric welding machine - for the raised edges of metal plates |
FR2413260A1 (fr) * | 1977-12-29 | 1979-07-27 | Gaz Transport | Cuve etanche et thermiquement isolante integree a la structure porteuse d'un navire |
WO1989009909A1 (fr) * | 1988-04-08 | 1989-10-19 | Gaz-Transport | Cuve etanche et thermiquement isolante perfectionnee, integree a la structure porteuse d'un navire |
JP2009006797A (ja) * | 2007-06-27 | 2009-01-15 | Osaka Gas Co Ltd | 貯蔵構造 |
WO2012127141A1 (fr) | 2011-03-23 | 2012-09-27 | Gaztransport Et Technigaz | Element calorifuge pour paroi de cuve etanche et thermiquement isolante |
WO2014096600A1 (fr) | 2012-12-21 | 2014-06-26 | Gaztransport Et Technigaz | Cuve etanche et thermiquement isolante |
Also Published As
Publication number | Publication date |
---|---|
FR3077115B1 (fr) | 2021-02-12 |
FR3077115A1 (fr) | 2019-07-26 |
CN111656083B (zh) | 2021-11-26 |
PH12020551108A1 (en) | 2021-07-05 |
CN111656083A (zh) | 2020-09-11 |
KR102614986B1 (ko) | 2023-12-19 |
RU2761703C1 (ru) | 2021-12-13 |
KR20200112926A (ko) | 2020-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR3082275A1 (fr) | Cuve etanche et thermiquement isolante | |
FR3074560A1 (fr) | Cuve etanche et thermiquement isolante | |
WO2020030871A1 (fr) | Structure d'angle pour une cuve etanche et thermiquement isolante | |
EP3365592B1 (fr) | Cuve comprenant des blocs isolants de coin equipes de fentes de relaxation | |
FR3058498A1 (fr) | Structure d'angle d'une cuve etanche et thermiquement isolante et son procede d'assemblage | |
FR3085199A1 (fr) | Paroi de cuve etanche et thermiquement isolante | |
WO2019239048A1 (fr) | Cuve etanche et thermiquement isolante | |
FR3115093A1 (fr) | Cuve étanche et thermiquement isolante | |
FR3094071A1 (fr) | Cuve étanche et thermiquement isolante | |
FR3112588A1 (fr) | Paroi d'une cuve de stockage d'un gaz liquéfiée | |
FR3073270B1 (fr) | Cuve etanche et thermiquement isolante comportant des dispositifs d'ancrage des panneaux isolants primaires sur des panneaux isolants secondaires | |
WO2019145635A1 (fr) | Cuve etanche et thermiquement isolante | |
FR3080905A1 (fr) | Paroi de cuve etanche comprenant une membrane d'etancheite | |
WO2021245091A1 (fr) | Cuve étanche et thermiquement isolante intégrée dans une structure porteuse | |
WO2019145633A1 (fr) | Cuve etanche et thermiquement isolante | |
FR3111410A1 (fr) | Dôme liquide d’une cuve de stockage pour gaz liquéfié | |
WO2020115406A1 (fr) | Cuve etanche et thermiquement isolante | |
WO2019239053A1 (fr) | Cuve etanche munie d'un element de jonction ondule | |
EP3645933A1 (fr) | Membrane etanche et procede d'assemblage d'une membrane etanche | |
WO2022074226A1 (fr) | Cuve étanche et thermiquement isolante | |
WO2022233907A1 (fr) | Installation de stockage pour gaz liquéfié | |
WO2023036769A1 (fr) | Installation de stockage pour gaz liquéfié | |
EP3948055B1 (fr) | Installation de stockage pour gaz liquéfié | |
WO2023025501A1 (fr) | Installation de stockage pour gaz liquéfié | |
FR3118796A1 (fr) | Installation de stockage pour gaz liquéfié |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19704370 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20207024253 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2020122755 Country of ref document: RU |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19704370 Country of ref document: EP Kind code of ref document: A1 |