• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Watertight vessel wall comprising a watertight membrane having a first series of parallel corrugations (3) and a second series of parallel corrugations (2) extending in intersecting directions, said corrugations (2, 3) having a plurality of nodes (5) at the crossings of said series of corrugations (2, 3), a wave reinforcement (11) arranged under a corrugation (3) of the first series of corrugations (3) (11) comprising: - a rail ( 13) housed under said undulation (3) and passing through a node (5) of said undulation (3), said rail (13) developing on either side of said node (5), - reinforcing portions (14, 26) attached to the rail (13) on either side of said node (5) so as to support portions (6) of said corrugation (3) located between said node (5) and the adjacent nodes (5).
    公开号:FR3084347A1
    申请号:FR1857044
    申请日:2018-07-27
    公开日:2020-01-31
    发明作者:Bruno Deletre；Marc Boyeau；Nicolas Laurain；Samuel Lesec
    申请人:Gaztransport et Technigaz SARL；
    IPC主号:
    专利说明:

    Technical area
    The invention relates to the field of sealed tanks with corrugated metal membranes, for the storage and / or transport of a fluid, and in particular to sealed and thermally insulating tanks for liquefied gas.
    In particular, the invention relates to the field of sealed and thermally insulating tanks for the storage and / or transport of liquid at low temperature, such as tanks for the transport of Liquefied Petroleum Gas (also called LPG) having for example a temperature between -50 ° C and 0 ° C, or for the transport of Liquefied Natural Gas (LNG) at around -162 ° C at atmospheric pressure. These tanks can be installed on the ground or on a floating structure. In the case of a floating structure, the tank can be intended for the transport of liquefied gas or to receive liquefied gas serving as fuel for the propulsion of the floating structure.
    Technological background
    There has been described in FR-A-2936784 a tank with corrugated waterproofing membrane, reinforced with reinforcing pieces placed under the corrugations, between the waterproofing membrane and the support of this waterproofing membrane, to reduce stresses in the waterproofing membrane caused by a multitude of factors, including thermal shrinkage when the vessel is cold, the bending effect of the ship's beam, and the dynamic pressure due to the movement of the cargo , especially due to the swell.
    In such a tank, the sealing membrane has two series of perpendicular undulations. Thus, the waterproofing membrane has a plurality of nodes corresponding to the intersections between the corrugations of the two series of corrugations.
    In one embodiment, these reinforcing pieces, also called wave reinforcements, are hollow and allow gas to circulate between the corrugations and the support by passing through the reinforcing pieces, in particular for inerting the insulating barrier or detecting leaks. . These reinforcing pieces are arranged under the undulations between two successive nodes and are therefore interrupted at the level of said nodes.
    summary
    However, the Applicant has found that the stresses in the waterproofing membrane are not necessarily uniform in the tank. Thus, the same undulation can be subjected to asymmetrical stresses which can cause deformations of the membrane for which the reinforcing pieces do not adequately fulfill a reinforcing function of the membrane. In particular, the Applicant has found that the reinforcing pieces are subject to joint displacements with the corrugation portion in which they are housed when said corrugation is subject to asymmetrical stresses. This joint movement of the reinforcement piece and the corrugation can generate a twist of the membrane at the node.
    A basic idea of the invention is to provide a waterproof wall with a corrugated waterproofing membrane continuously reinforced along the corrugation. One idea underlying the invention is to ensure continuity of the wave reinforcements arranged in a corrugation. An idea at the base of the invention is to ensure alignment of the wave reinforcements arranged under a corrugation to limit the risks of torsion of the membrane at the node.
    According to one embodiment, the invention provides a sealed vessel wall comprising a corrugated waterproof membrane, the corrugated waterproof membrane comprising a first series of parallel corrugations and a second series of parallel corrugations and planar portions located between the corrugations and resting on a support surface, said first and second series of corrugations extending in intersecting directions, said corrugations having a plurality of nodes at the intersections of said series of corrugations, a wave reinforcement being arranged under a corrugation of the first series of undulations, said wave reinforcement comprising:
    a rail resting on the support surface and housed under said undulation, said rail extending parallel to the first series of undulations and passing through a node of said undulation, said rail developing on either side of said node, portions of reinforcement attached to the rail and resting on an upper surface of the rail on either side of said node so as to support portions of said undulation situated between said node and the adjacent nodes of said undulation, an intermediate portion of the rail not covered by the reinforcing portions and interposed between said reinforcing portions being housed in the knot.
    Thanks to these characteristics, continuity is ensured between two successive reinforcing portions arranged in an undulation on either side of a node and separated by said node. Thanks to these characteristics, the relative displacement between two successive wave reinforcement portions arranged in the corrugation is limited, even in the presence of asymmetrical stresses on either side of the node.
    A te! wave reinforcement is suitable for a waterproof membrane in which the nodes have a reduced section compared to the rest of the corrugation.
    According to one embodiment, the node comprises a vertex, said undulation comprising on either side of the vertex a concave portion forming a narrowing of the corrugation.
    According to one embodiment, said narrowing defines for example a minimum section of the corrugation in the node.
    According to one embodiment, the intermediate portion of the rail extends in the node under the narrowing of the corrugation formed by the concave portions of the corrugation located on either side of the top.
    According to embodiments, such a wall may also include one or more of the following characteristics.
    According to one embodiment, the rail crosses a plurality of successive nodes of said undulation, reinforcing portions being attached to the rail on either side of the successive nodes crossed by the rail so as to support portions of said undulation on either side of successive nodes crossed by the rail. According to one embodiment, the rail comprises a plurality of intermediate portions not covered by the reinforcing portions, said intermediate portions being interposed between the reinforcing portions attached to the rail.
    According to one embodiment, the rail has a constant cross section in a longitudinal direction of the corrugation.
    According to one embodiment, the reinforcing portion has a variable cross section in a longitudinal direction of the corrugation. According to one embodiment, the reinforcing portion comprises a central part and at least one end part. According to one embodiment, the reinforcing portion has two end parts located on either side of the central part in the longitudinal direction of said reinforcing portion.
    According to one embodiment, the central part of the reinforcement portion has an external shape which matches the internal shape of the longitudinal portion of the corrugation.
    According to one embodiment, the end part or parts develop in a node of the corrugation. According to one embodiment, the end part or parts have a profile conforming to a section of the corresponding node, said section of the node being defined by the narrowing of the corrugation formed by the corresponding concave portion of the corrugation. Such a profile of the end portion of the reinforcing portion advantageously makes it possible to reinforce the undulation at the level of the knot, in particular at the level of the concave portions formed in the knot.
    In other words, according to one embodiment, the reinforcement portion has different profiles between the end (s) of said reinforcement portion housed in the node (s) and the central portion housed in the longitudinal portion of the corrugation, the one or more said end parts having a profile capable of supporting a lateral portion of the corresponding node.
    According to one embodiment, the end part or parts of the reinforcement portion are formed by one or more spacers attached to the intermediate portion of the rail on either side of the central part of the reinforcement portion.
    According to one embodiment, the reinforcement portion or portions have a beveled end in the direction of the knot.
    According to one embodiment, the reinforcement portion (s) have an external wall, for example of convex semi-elliptical external shape, delimiting an internal space of the reinforcement portion (s).
    According to one embodiment, the internal space of the reinforcement portion (s) is hollow and constitutes a passage for the circulation of gas through the reinforcement portion.
    According to one embodiment, the reinforcement portion (s) further comprise internal reinforcement webs.
    According to one embodiment, the rail comprises a means for anchoring the reinforcing portions configured to retain said reinforcing portions in a thickness direction of the tank wall.
    According to one embodiment, the reinforcing portions are mounted by sliding on the rail in a longitudinal direction of said rail.
    According to one embodiment, the rail has a longitudinal groove open on its upper face, the reinforcing portions comprising a dovetail tenon housed in said groove.
    According to one embodiment, the spoke! has a flat bottom wall resting on the support surface and a flat top wall parallel to the bottom wall, the longitudinal groove being formed in the top wall.
    According to one embodiment, the rail has side walls connecting the bottom wall and the top wall. According to one embodiment, the side walls are inclined relative to the bottom wall, the bottom wall forming a maximum width of the rail. According to one embodiment, the side walls of the spoke! have an inclination and / or a concavity matching the inclination and / or the concavity of the corrugation opposite said side walls so as to reinforce a corresponding lower portion of the corrugation.
    According to one embodiment, the reinforcing portions are fixed to the rail.
    This attachment can be achieved in many ways. According to one embodiment, the reinforcing portions are riveted on the rails. According to one embodiment, the reinforcing portions are welded to the rails.
    According to one embodiment, the wave reinforcement is a first wave reinforcement and said corrugation of the first series of corrugations is a first corrugation, the vessel wall further comprising two second wave reinforcements, said second reinforcements wave being housed under a second corrugation, said second corrugation being a corrugation of the second series of corrugations forming with the first corrugation the node crossed by the rail of the first wave reinforcement, the second wave reinforcements being housed under the second undulation on either side of said node between said node and adjacent nodes of the second undulation so as to support portions of said second undulation situated between said node and the adjacent nodes of said second undulation.
    According to one embodiment, the second reinforcements have one end housed in the node in contact with the rail. Thanks to these characteristics, the rail exerts a stop function thus limiting the movement of the second wave reinforcements in the longitudinal direction of the second corrugations.
    According to one embodiment, the rail of the first wave reinforcement has a transverse groove, said transverse groove being housed in the knot, the vessel wall further comprising a sleeve housed in said transverse groove and projecting laterally from right and left other of the rail of the first wave reinforcement, the second wave reinforcements being hollow, the sleeve being housed in said second wave reinforcements so as to keep said second wave reinforcements aligned on either side of the node .
    According to one embodiment, the hollow portions of the second wave reinforcements have a housing of complementary section to the section of the sleeve so that said sleeve is housed sliding in said second wave reinforcements in a longitudinal direction of said second reinforcements. wave.
    According to one embodiment, the transverse groove of the rail has a section in the shape of an inverted "T" so that the sleeve is blocked in displacement relative to the rail of the first wave reinforcement in a thickness direction of the wall of tank.
    According to one embodiment, the transverse groove of the rail has a section of trapezoidal shape, dovetail or triangular, arranged so that the sleeve is blocked in displacement relative to the rail of the first wave reinforcement in the direction d thickness of the tank wall. For example, the transverse groove of the rail has a section of isosceles trapezoidal shape, the large base of which is located close to the support surface and the small base constitutes an opening of the transverse groove of the rail on the upper face of the rail.
    Thanks to these characteristics, the second wave reinforcements are blocked in movement in the thickness direction of the tank. In particular, the inverted or trapezoidal “T” shape of the transverse groove and the complementary shape of the sleeve housed in the second wave reinforcements prevents the lifting of the second wave reinforcements by displacement of the rail, for example during a impact of liquid on the first corrugation in a direction perpendicular to the longitudinal direction of said first corrugation.
    According to one embodiment, the transverse groove is a main transverse groove, the rail further comprising one or more secondary transverse grooves. Preferably, the main transverse groove and the secondary transverse grooves are housed in the node. Such transverse grooves allow the rail to maintain good rigidity in a plane parallel to the support surface while having better flexibility outside said plane.
    According to one embodiment, at least one secondary transverse groove develops on either side of the main transverse groove. According to one embodiment, the secondary transverse grooves adjacent to the main transverse groove develop from a lower face of the rail. According to one embodiment, the secondary transverse grooves develop alternately from the upper face of the rail and from the lower face of the rail. Such alternation allows greater flexibility of the spoke! out of the plane parallel to the support surface.
    According to one embodiment, a plurality of wave reinforcements are housed under the corrugation of the first series of corrugations, said wave reinforcements having a rail resting on the support surface and housed under the corrugation, said rails crossing at least one node in said undulation and developing on either side of said at least one node, and in which opposite ends of two successive rails housed under said undulation are arranged between two successive nodes of said undulation, a junction reinforcement portion being attached to said ends so as to support said undulation between said two successive nodes and keep said ends aligned.
    According to one embodiment, the invention also provides a wave reinforcement intended to be housed under an undulation of a corrugated waterproofing membrane, said wave reinforcement comprising a rail and a plurality of reinforcement portions, said portions reinforcement being attached to the rail and spaced along a longitudinal direction of the rail, an intermediate portion of the rail not covered by the reinforcement portions and interposed between two successive reinforcement portions being intended to be housed under a node of the waterproofing membrane , said node being formed by the intersection of two intersecting undulations of said sealing membrane.
    According to embodiments, such a wave reinforcement may include one or more of the following characteristics.
    According to one embodiment, the reinforcing portions are slidably mounted on the rail in a longitudinal direction of said rail.
    According to one embodiment, the reinforcement portion (s) have an external wall, for example of convex semi-elliptical external shape, delimiting an internal space of the reinforcement portion (s).
    According to one embodiment, the internal space of the reinforcement portion (s) is hollow.
    According to one embodiment, the reinforcement portion (s) further comprise internal reinforcement webs.
    According to one embodiment, the rail has a longitudinal groove open on its upper face, the reinforcing portions comprising a dovetail tenon housed in said groove.
    According to one embodiment, the rail has a flat bottom wall and a flat top wall parallel to the bottom wall, the longitudinal groove being formed in the top wall.
    According to one embodiment, the rail has side walls connecting the bottom wall and the top wall. According to one embodiment, the side walls are inclined relative to the bottom wall, the bottom wall forming a maximum width of the rail.
    According to one embodiment, the reinforcing portions are fixed to the rail. According to one embodiment, the reinforcing portions are riveted on the rails. According to one embodiment, the reinforcing portions are welded to the rails.
    According to one embodiment, the rail has a transverse groove, intended to receive a sleeve for fixing second hollow wave reinforcements. According to one embodiment, the rail further comprises secondary transverse grooves as above.
    According to one embodiment, the invention also provides a portion of corrugated waterproof membrane intended to rest on a surface for supporting the wall of a sealed vessel, said portion of waterproof membrane comprising:
    - a corrugated metal plate, said metal plate comprising a first series of parallel corrugations and a second series of parallel corrugations and flat portions located between the corrugations and intended to rest on the support surface, said first and second series of undulations extending in intersecting directions, said undulations having a plurality of nodes at the intersections of said series of undulations,
    a row of wave reinforcement being housed in a corrugation of the first series of corrugations between edges of the corrugated metal plate delimiting said corrugation, said row of wave reinforcements comprising at least one wave reinforcement as described above, in which the intermediate portion of the rail is housed in a node of said undulation, the reinforcement portions of said wave reinforcement being housed in longitudinal portions of said undulation situated on either side of the node between said node and adjacent nodes of said undulation.
    According to one embodiment, the wave reinforcement row is fixed to the corrugated metal plate, for example by means of double-sided scotch® or by gluing. Thus, it is possible to handle the corrugated metal plate with one or more rows of pre-assembled wave reinforcements in this manner, which facilitates the mounting of a tank wall.
    According to one embodiment, the row of wave reinforcements comprises a plurality of wave reinforcements as above accommodated successively in the corrugation.
    According to one embodiment, two of said successive wave reinforcements each have a respective rail, one end of which is housed in a portion of the common corrugation, said portion of the common corrugation being located between two adjacent nodes of the corrugation crossed each by said respective rail of said successive wave reinforcements, said ends of the two rails being joined by a junction reinforcement portion attached jointly to said ends of the two rails so as to secure said two successive wave reinforcements in an aligned manner.
    According to one embodiment, a plurality of rows of wave reinforcements formed in the same way are arranged in respective corrugations of the first series of corrugations over the entire length of the rectangular sheet metal piece, for example in each of the corrugations or only in some of them, and can be fixed to the rectangular sheet metal piece in the same way.
    According to one embodiment, rows of wave reinforcements are arranged in the corrugations of the second series of corrugations. These wave reinforcements can be fixed in different ways, for example by cooperation with the wave reinforcements housed in the corrugation (s) of the first series of corrugations. According to one embodiment, the wave reinforcements arranged in the corrugations of the second series of corrugations are fixed to the piece of corrugated sheet, for example by means of double-sided scotch® or by gluing.
    According to one embodiment, a plurality of rows of wave reinforcements are arranged in the respective corrugations of the first series of corrugations over substantially the entire length of the corrugated metal and rows of second wave reinforcements are arranged in the corrugations of the second series of corrugations, the second wave reinforcements being assembled with the first wave reinforcements to form a framework of the corrugated metal.
    According to one embodiment, the corrugated metal plate is rectangular, the corrugations being parallel to respective edges of said corrugated metal plate.
    Such a tank wall can be part of a terrestrial storage installation, for example to store LNG or be installed in a floating structure, coastal or deep water, in particular an LNG tanker or any ship using a combustible liquefied gas as fuel , a floating storage and regasification unit (FSRU), a floating remote production and storage unit (FPSO) and others.
    According to one embodiment, the invention provides a vessel for the transport of a cold liquid product comprises a double hull and a tank comprising the above-mentioned waterproof wall disposed in the double hull.
    According to one embodiment, the invention also provides a method of loading or unloading such a ship, in which a cold liquid product is conveyed through isolated pipes from or to a floating or land storage installation to or from the vessel of the ship.
    According to one embodiment, the invention also provides a transfer system for a cold liquid product, the system comprising the aforementioned ship, isolated pipes arranged so as to connect the tank installed in the hull of the ship to a floating storage installation. or terrestrial and a pump to drive a flow of cold liquid product through the isolated pipes from or to the floating or terrestrial storage facility to or from the vessel of the ship.
    Brief description of the figures
    The invention will be better understood, and other objects, details, characteristics and advantages thereof will appear more clearly during the following description of several particular embodiments of the invention, given solely by way of illustration and without limitation. , with reference to the accompanying drawings.
    • Figure 1 is a view of a corrugated metal plate for the construction of a waterproof membrane of a liquefied natural gas storage tank;
    • Figure 2 is a schematic perspective view of a row of long wave reinforcements associated with a plurality of small wave reinforcements;
    • Figure 3 is a sectional view of a long wave reinforcement of the row of wave reinforcements of Figure 2;
    • Figure 4 is a schematic perspective view of a large wave reinforcement and small wave reinforcements at a node of Figure 2;
    • Figures 5 to 6 are partial sectional views of Figure 4 in different sectional planes illustrating the cooperation between the large wave reinforcement and the small wave reinforcement at a node;
    • Figure 7 is a partial sectional view of a variant of Figure 4;
    • Figure 8 is a schematic perspective view from below of a corrugated metal plate of waterproof membrane in which are housed large wave reinforcements and small wave reinforcements;
    • Figure 9 is a schematic perspective view of a sealed and thermally insulating tank part during assembly comprising a corrugated metal plate of Figure 8 illustrated in transparency;
    • Figure 10 is a cutaway schematic representation of an LNG tank and a loading / unloading terminal of this tank;
    Detailed description of embodiments
    By convention, the terms "external" and "internal" are used to define the relative position of one element with respect to another, by reference to the interior and exterior of the tank.
    A sealed and thermally insulating tank for the storage and transport of a cryogenic fluid, for example Liquefied Natural Gas (LNG) comprises a plurality of tank walls each having a multilayer structure.
    Such a tank wall comprises, from the outside towards the inside of the tank, a thermal insulation barrier anchored to a support structure by retaining members and a sealing membrane carried by the thermal insulation barrier and intended to be in contact with the cryogenic fluid contained in the tank.
    The supporting structure may in particular be a self-supporting metal sheet or, more generally, any type of rigid partition having suitable mechanical properties. The supporting structure can in particular be formed by the hull or double hull of a ship. The supporting structure has a plurality of walls defining the general shape of the tank, usually a polyhedral shape.
    The tank may also include a plurality of thermal insulation barriers and sealing membranes. For example, from the outside towards the inside of the tank, a tank can include a secondary thermal insulation barrier anchored on the support structure, a secondary waterproofing membrane carried by the secondary thermal insulation barrier, a barrier of primary thermal insulation resting on the secondary waterproofing membrane and a primary waterproofing membrane resting on the primary thermal insulation barrier. The thermal insulation barrier can be produced in many ways, in many materials according to known techniques such as, for example, described in documents WO2017017337 or WO2017006044. Sealing membranes can be made of corrugated rectangular metal parts with series of corrugations of different or similar sizes.
    FIG. 1 illustrates a corrugated metal plate 1 intended for the formation of a waterproof membrane of a storage tank for liquefied natural gas.
    The metal plate 1 comprises a first series of parallel ripples 2, called low, extending in a direction y and a second series of parallel ripples 3, said high, extending in a direction x. The x and y directions of the wave series are perpendicular. The corrugations 2, 3 project from the side of the internal face of the metal plate 1, intended to be brought into contact with the fluid contained in the tank. The edges of the metal plate 1 are here parallel to the corrugations 2, 3. Note that the terms “high” and “low” have a relative meaning and mean that the corrugations 2, said low, have a height less than the corrugations 3, said high.
    The metal plate 1 has, between the corrugations 2, 3, a plurality of flat surfaces 4. At each intersection between a low corrugation 2 and a high corrugation 3, the metal plate 1 comprises a node 5. In other words, each corrugation 2 , 3 comprises a succession of longitudinal portion 6 and node 5, said nodes 5 being formed by the intersection of said corrugation 2, 3 with a perpendicular corrugation 3, 2. Such longitudinal portions 6 have a substantially constant section, the change in section of the corrugation 2, 3 at the intersection between two corrugations 2, 3 marking the start of the node 5. However, the longitudinal portion 6 may include local deformations (not shown) as described in document FR2861060.
    The node 5 has a fold 7 which extends the top edge 8 of the high corrugation 3. This fold 7 forms a top of the node 5 projecting towards the inside of the tank. The top edge 8 of the upper corrugation 3 further comprises a pair of concave corrugations 9 whose concavity is turned towards the inside of the tank and which are arranged on either side of the fold 7. Furthermore , the fold 7 is bordered by a pair of lateral recesses 10 formed in the upper corrugation 3 and into which the lower corrugation 2 enters.
    The metal plate 1 can in particular be made of stainless steel, aluminum, Invar®: that is to say an alloy of iron and nickel whose coefficient of expansion is typically between 1.2.10 -6 and 2.10 ' 6 K -1 , or in an iron alloy with a high manganese content, the expansion coefficient of which is typically of the order of 7 to 9.10 -6 K -1 . However, other metals or alloys are also possible.
    By way of example, the metal plate 1 has a thickness of approximately 1.2 mm. Other thicknesses are also possible, knowing that a thickening of the metal sheet 1 leads to an increase in its cost and generally increases the rigidity of the corrugations 2, 3.
    According to an advantageous embodiment (see FIG. 8) two perpendicular edges of each metal plate 1 have a jogglining, that is to say a uneven part, so that, when the metal plates 1 are welded to each other, the edges having a jogglinage each come to overcome the edge vis-à-vis the adjacent metal plate 1.
    Other details and possible characteristics of the waterproofing membrane, of the metal plates 1 forming said waterproofing membrane, and of the structure of the nodes 5 are described in documents WO2017017337 or WO 2017006044. By way of example, the plates metallic 1 assembled to form the waterproofing membrane can be shaped by stamping or folding.
    The corrugations 2, 3 of the metal plate 1 allow the waterproofing membrane to be flexible in order to be able to deform under the effect of the thermal and mechanical stresses generated by the liquefied natural gas stored in the tank. In order to reinforce the waterproofing membrane with regard to these different stresses, wave reinforcements are arranged in the corrugations 2, 3. More particularly, rows of first wave reinforcements 11 are arranged under the high corrugations 3. De even, rows of second wave reinforcements 12 are arranged under the low corrugations 2. These wave reinforcements 11,12 make it possible to support and reinforce the corrugations 2, 3 of the waterproofing membrane in the presence of linked stresses for example fluid movements in the tank.
    Such wave reinforcements 11, 12 are illustrated in detail in FIGS. 2 to 7. In these FIGS. 2 to 7, the sealing membrane is not illustrated in order to allow better readability of the characteristics and of the arrangement. said wave reinforcements 11,12 being understood that these wave reinforcements 11, 12 are described in the context of an arrangement of said wave reinforcements 11,12 under the corrugations 2, 3 of a sealing membrane formed by a plurality of corrugated metal plates 1 as illustrated in FIG. 1.
    As illustrated in FIGS. 2 to 4, the first wave reinforcement 11 comprises a rail 13 on which portions of reinforcement 14 are attached.
    The rail 13 has a constant section along the longitudinal direction of the upper corrugation 3 under which it is arranged. This rail 13 has a height, taken along the thickness direction of the tank wall, less than the height of the high corrugation 3, including at the level of the concave corrugations 9 formed at the level of the nodes 5.
    FIG. 3 illustrates a sectional view of a first wave reinforcement 11 in a section plane perpendicular to the longitudinal direction of said first wave reinforcement 11 at the level of a reinforcement portion 14. As illustrated in this FIG. 3 , the rail 13 has a flat bottom wall 15. This flat wall 15 rests on the support surface formed by the thermally insulating barrier (not shown). The rail 13 also has side walls 16 developing from the side edges of the bottom wall 15. These side walls 16 develop in an inclined manner relative to the bottom wall 15.
    Preferably, the side walls 16 of the rail 13 has an external face, that is to say facing the high corrugation 3, whose inclination and / or concavity is identical or close to that of the high corrugation 3 opposite. Thus, the external face of the side walls 16 conform to the internal face facing the upper corrugation 3 and can exert a reinforcing function on the lower portion of the upper corrugation 3.
    The rail 13 further comprises an upper wall 17 developing between the side walls 16. This upper wall 17 is flat and parallel to the lower wall 15. The upper face of the upper wall 17 has a groove 18 in the form of a tail. dovetail whose opening is turned towards the inside of the tank. This groove 18 is substantially centered between the side walls 16. The groove 18 has two internal walls 19 connecting the upper wall 17 to the lower wall 15, the lower wall 15 forming the bottom of the groove 18.
    The reinforcing portion 14 has a flat bottom wall 20 surmounted by an external envelope 21. This external envelope 21 has a convex shape, typically a dome shape, for example semi-elliptical and having a shape analogous to the shape of the corrugation. high 3. These walls 20, 21 delimit a hollow internal space of the reinforcement portion 14. Such a hollow reinforcement portion 14 allows the circulation of gas in said reinforcement portion 14, for example for inerting or leak detection in the thermal insulation barrier. The reinforcing portion 14 further comprises internal webs 22 making it possible to reinforce said reinforcing portion 14.
    The reinforcing portion 14 comprises a stud 23 projecting outwards from the bottom wall 20. This stud 23 also has a dovetail shape complementary to the dovetail shape of the groove 18. The portion of reinforcement 14 is slidably mounted on the rail 13 by cooperation between the stud 23 and the groove 18, this cooperation ensuring the maintenance of the reinforcement portion 14 on the rail 13 in the thickness direction of the tank wall while allowing movement of the reinforcing portion 14 in the longitudinal direction of the rail 13.
    In the embodiment illustrated in FIG. 3, the reinforcement portion further comprises two lateral tabs 44 which develop outwards and extend the external envelope 21 towards the support surface beyond the bottom wall 20. These lateral tabs 44 partially cover the lateral walls 16 of the rail 13. These lateral tabs 44 have an external face facing the upper corrugation 3 matching the internal shape of said upper corrugation 3 so as to support and reinforce said upper corrugation 3. Furthermore , the cooperation between the side tabs 44 of the reinforcement portion 14 and the side walls 16 of the rail 13 allows better retention of the reinforcement portion 14 on the spoke! 13 and participates with the pin 23 in the sliding guide of the reinforcing portion 14 on the rail 13.
    The stresses in the tank are not always uniform. Thus, a high corrugation 3 may be subject along its length to asymmetrical constraints. Such asymmetrical stresses result in the application of a lateral stress on a longitudinal portion 6 of the high corrugation 3 without the adjacent longitudinal portion 6 of said high corrugation 3 being subject to a similar constraint. In the presence of such asymmetrical stresses, the high corrugation 3 may be subject to a significant torsion at the level of the node 5 separating the two successive longitudinal portions 6 subject to said asymmetric stress.
    The rail 13 having a height less than the height of the high corrugation 13 including at the level of the nodes 5, and in particular at the level of the concave portions 9, the same rail 13 may have a length allowing it to pass through a node 5 and even, preferably, a plurality of successive nodes 5 of the high ripple 3. Thus, in the embodiment illustrated in FIG. 2, the spoke! 13 has a length allowing said spoke! 13 to cross three successive nodes 5 of the high corrugation 3 under which said rail 13 is housed.
    The reinforcing portions 14 are attached to the rail 13 so as to develop in the longitudinal portions 6 of the high corrugation 3. Thus, in the embodiment illustrated in FIG. 2, two reinforcing portions 14 are attached to the rail 13 so as to be housed in the longitudinal portions 6 located between the nodes 5 through which the rail 13 passes.
    The length of the reinforcing portion 14 at the top of the external envelope 21 is for example equal to the length of the longitudinal portion 6 of the upper corrugation 3 which has a uniform section between two nodes 5 so as to reinforce said longitudinal portions 6 over the entire distance separating two successive nodes 5 from the top ripple 3. This portion of uniform section stops when the top ripple 3 has a slight lateral constriction marking the start of node 5, the geometry of which is complex as explained upper. Furthermore, the beveled shape of the reinforcement portions 14 corresponds substantially to the inclination of this lateral constriction, so that the reinforcement portion 14 comes as close as possible to the node 5 to optimize the support of the high ripple. 3.
    The rail 13 has between two successive reinforcing portions 14 an intermediate portion 24 not covered by said successive reinforcing portions 14. This intermediate portion 24 is housed in a corresponding node 5 crossed by the rail 13. Thus the first wave reinforcement 11 has an alternation of rail portions 13 covered by the reinforcement portions 14 and housed in the successive longitudinal portions 6 of l 'high corrugation 3 and intermediate portions 24 of the rail 13 not covered by the reinforcement portions 14 housed in the nodes 5 crossed by said rail 13.
    Thus, a first wave reinforcement 11 as illustrated in FIG. 2 makes it possible to reinforce a plurality of successive longitudinal portions 6 of the upper corrugation 3 while retaining an alignment of the reinforcement portions 14 even in the presence of asymmetrical stresses.
    FIG. 2 partially illustrates a row of first wave reinforcements 11 intended to be arranged under a high corrugation 3. This row of first wave reinforcements 11 comprises a plurality of first wave reinforcements 11 aligned under said high corrugation 3, it being understood that the alignment of first wave reinforcements 11 illustrated in FIG. 2 can be reproduced over the entire length of a high corrugation 3. Likewise, the second wave reinforcements 12 illustrated in this FIG. 2 can be arranged under low undulations 2 over the entire length of said low undulations 2.
    Ends 25 of the rails 13 develop in the longitudinal portions 6 of the corresponding high corrugation 3 approximately to mid-length of said longitudinal portions 6. In other words, the ends 25 of the rails 13 successive of the row of first reinforcements wave 11 are housed opposite substantially in the middle of the same longitudinal portion 6 of the upper corrugation 3.
    As illustrated in FIG. 2, a junction reinforcement portion 26 similar to the reinforcement portions 14 is attached to the two ends 25 opposite two successive rails 13. Such a junction reinforcing portion 26 makes it possible on the one hand to reinforce the corresponding longitudinal portion 6 of the upper corrugation 3 and, on the other hand, to ensure the alignment of said successive rails 13 so as to ensure alignment first wave reinforcements 11 joined by this portion of junction reinforcement 26.
    The mounting by sliding of the reinforcing portions 14, 26 on the rails 13 makes it possible to position said reinforcing portions 14, 26 on the rails 13 in a simple and rapid manner while making it possible to make up for any play in the construction of the membrane. seal. This sliding is particularly advantageous for the junction reinforcing portion 26 in order to make up for any play in construction between two successive rails 13. In addition, such cooperation between the junction reinforcement portion 26 and rails 13 allows said junction reinforcement portion 26 to ensure better alignment of said rails 13 in the upper corrugation 3 by cooperation of the stud 23 with each of the grooves 18 of said successive rails 13 and lugs 44 with said successive rails 13.
    Once correctly positioned on the rails 13, the reinforcing portions 14, 26 can be fixed on the rails 13 definitively. For example, the reinforcing portions 14, 26 can be fixed by riveting, by a welding point or by any other suitable means. Such a welding point or such a riveting is for example produced between the bottom wall 15 of the rail 13 and the lug 23 of the reinforcement portion 14, 26. In the case of a reinforcement portion 14 attached to a single rail 13 , this attachment is for example centered on the reinforcing portion 14 in its longitudinal direction. In the context of a junction reinforcement portion 26, two fixing points can be provided, one on each rail 13 on which said junction reinforcement portion 26 is attached, for example at mid-length of the portion of said spoke! 13 covered by said junction portion 26.
    The second wave reinforcements 12 illustrated in FIGS. 2 and 4 to 7 and comprise a lower wall 27 surmounted by an external wall 28. The external wall 28 has a convex shape, for example a dome shape similar to the shape of the corrugations bass 2 and delimits a hollow internal space of the second wave reinforcement 12. In a similar manner to the reinforcement portions 14, this hollow internal space of the second wave reinforcements 12 allows the circulation of gas for inerting and / or detection leak. The bottom wall 27 rests on the support surface formed by the thermally insulating barrier. These second wave reinforcements 12 comprise, in a similar manner to the reinforcement portions 14, 26 of the first wave reinforcements 11, internal webs 29 making it possible to reinforce said second wave reinforcements 12.
    Similarly to the first wave reinforcements 11, it is preferable to keep the alignment of the second wave reinforcements 12 housed under the low corrugations 2. The second wave reinforcements 12 of the rows of second wave reinforcements 12 are arranged in! es longitudinal portions 6 of the low undulations 2 between two successive nodes 5 of said low undulations 2.
    However, the rails 13 of the first wave reinforcements 11 passing through the nodes 5, the second wave reinforcements 12 are interrupted at the level of said nodes 5. In order to ensure the continuity of the second wave reinforcements 12 despite the interruption caused by the rails 13, the second wave reinforcements 12 are linked by sleeves 30 passing through the said rails 13 at the nodes 5.
    For this, the rails 13 comprise at the node 5 a transverse groove 31. This transverse groove 31 develops through and perpendicular to the groove 18 of the rails 13.
    In the embodiment illustrated in Figure 7, this transverse groove has an inverted "T" shape. This transverse groove develops from the upper face of the upper wall 17 of the rail 13.
    The sleeve 30 has a shape complementary to the shape of the transverse groove 31, typically an inverted "T" shape having a planar base parallel to the bottom wall 15 of the rail 13 and an upper vertical wall 33 perpendicular to the planar base 32. Thus, the sleeve 30 can be slidably mounted in the transverse groove 31. In addition, the inverted “T” shape of the transverse groove 31 and of the sleeve 30 allows said sleeve 30 to be blocked in the transverse groove 31 in the direction of thickness of the tank wall.
    The sleeve 30 is housed in the transverse groove 31 of the rail 13 so as to project laterally on either side of said rail 13 and be housed by sliding in two second wave reinforcements 12 successive of the row of second reinforcements wave 12. Thus, this sleeve makes it possible to maintain the alignment of said two second wave reinforcements 12 located on either side of the rail 13 at the node 5.
    In order to ensure the cooperation of the second wave reinforcements 12 with the sleeve 30, the second wave reinforcement 12 has an internal housing 34 developing in the longitudinal direction of said second wave reinforcement 12. This internal housing 34 is formed by two parallel vertical walls 35 developing from the internal webs 29 in the direction of the lower wall 27 of the second wave reinforcement 12. These vertical walls 35 are spaced from each other by a distance corresponding to the thickness of the upper vertical wall 33 of the sleeve 30.
    In addition, the bottom wall 27 of the second wave reinforcement has an elevation 36. The two vertical walls 35 of the housing 34 develop in the direction of said elevation 36 and have a bottom face facing said elevation 36. The distance between this elevation 36 and the vertical walls 35 is greater than, and preferably close to, the thickness of the base 32 of the sleeve 30. Thus, the sleeve 30 can be inserted in the housing 34 of the second wave reinforcement 12 by sliding along the longitudinal direction of the second wave reinforcement 12. Such sliding insertion makes it possible to block the second wave reinforcement 12 relative to the sleeve 30, and therefore relative to the rail 13, both laterally by stop of the upper vertical wall 33 of the sleeve 30 on the two vertical walls 35 of the housing 34 and in vertical displacement by stop of the base 32 of the sleeve 30 on the lower faces d he vertical walls 35 and on the elevation 36.
    In the variant illustrated in FIG. 7, the rail 13 further comprises secondary transverse grooves 45. These secondary transverse grooves 45 develop in the rail 13 transversely and perpendicular to the groove 18 of the rail 13. These secondary transverse grooves 45 develop from the underside of the bottom wall 15 of the rail 13.
    In FIG. 7, only two secondary transverse grooves 45 are illustrated, but the rail 13 can comprise a plurality of secondary transverse grooves 45 on either side of the transverse groove 31. In this case, the secondary transverse grooves 45 develop alternately from the lower face of the lower wall 15 and from the upper face of the upper wall 17 of the rail, the secondary transverse grooves 45 adjacent to the transverse groove 31 developing from the lower face of the lower wall 15 of the rail 13.
    Such secondary transverse grooves 45 offer flexibility to the rail 13 outside of a plane parallel to the support surface while retaining good rigidity in said plane parallel to the support surface.
    In an embodiment not illustrated, a second wave reinforcement 12 develops in at least two longitudinal portions 6 adjacent to a low ripple 2. In this embodiment, the second wave reinforcement has an intermediate portion filling the same function as the sleeve 30 described above. However, unlike the sleeve 30 housed in the transverse groove 31, the intermediate portion of such a second wave reinforcement covers the intermediate portion 24 of the rail 13 located at the right of the low corrugation 2.
    Such a second wave reinforcement 12 is for example produced by machining a portion of said second wave reinforcement 12 according to a form of machining complementary to the external shape of the intermediate portion 24 of the rail 13. This machining thus makes it possible to form the intermediate portion of the second wave reinforcement 12 to cover the intermediate portion 24 of the rail 13 by matching its external shape.
    In such an embodiment, the intermediate portion 24 of the rail 13 can advantageously include a plurality of secondary transverse grooves 45 as described above, the transverse groove 31 then being replaced by a said secondary transverse groove 45. Similarly, the second wave reinforcement 12 may also have transverse grooves similar to the secondary transverse grooves 45, developing from the top or from the base of the second wave reinforcement 12, preferably alternately.
    In addition, as illustrated in FIG. 5, the second wave reinforcement 12 is blocked in movement along the longitudinal direction of the bottom corrugation 2 in which it is housed by the stop of its lower wall 27 on the rail 13 of the first wave reinforcement 11.
    Wave reinforcements 11,12 as illustrated in FIGS. 2 to 7 thus advantageously make it possible to maintain a stable and reliable alignment of said wave reinforcements 11, 12 including in the presence of asymmetrical stresses in the tank. Such wave reinforcements 11, 12 can be made of many materials such as for example in materials such as metals, in particular aluminum, metal alloys, plastics, in particular polyethylene, polycarbonate, polyether imide, or composite materials comprising fibers, in particular glass fibers, linked by a plastic resin.
    Wave reinforcements 11,12 can be produced in many ways. Preferably, these wave reinforcements 11, 12 are produced by extrusion. For example, the rail 13, the reinforcement portion 14 and the second wave reinforcements 12 are produced independently of each other by extrusion to the desired lengths. In a second step, the rail 13 can be machined to produce the transverse groove 31.
    FIG. 8 illustrates a waterproof membrane element 41 comprising a corrugated metal plate 1 as illustrated in FIG. 1 in which are housed a plurality of first wave reinforcements 11 and second wave reinforcements 12. In this FIG. 8 , first three wave reinforcements 11 are housed in the high corrugations 3 of the corrugated metal plate 1 and second wave reinforcements 12 are housed in the low corrugations 2 between said first wave reinforcements.
    Furthermore, as illustrated in this FIG. 8 and in FIG. 1, edges 37 of the metal plate 1 interrupt the corrugations 2, 3 between two successive nodes 5 of the sealing membrane. In other words, the metal plate 1 has half longitudinal portions 38 connecting the edges 37 of the plate to the nodes 5 adjacent to said edges 37.
    The rails 13 of first end wave reinforcements 11 develop in these half longitudinal portions 38 and are interrupted substantially at the edges 37. Half reinforcement portions 39 are attached to the rails 13 in the half longitudinal portions 38 of high corrugations 3 to reinforce said half longitudinal portions 38. These half reinforcing portions 39 are similar to the reinforcing portions 14 as described above but have a length adapted to the length of the half longitudinal portions 38. Similarly, half second wave reinforcements 40 are arranged in the half longitudinal portions 38 of the low corrugations 2.
    Many methods can be implemented in order to maintain the wave reinforcements 11, 12, 40 in the corrugations 2, 3 of the metal plate 1. According to one embodiment, the wave reinforcements 11, 12 , 40 are fixed in the corrugations by double-sided scotch® or by gluing. According to one embodiment, retaining clips (not shown) are arranged on the edges of said metal plate 1. These retaining clips 1 comprise a portion arranged on the internal face of the metallic plate 1 and a portion housed in the hollow internal space of the wave reinforcements 11, 40. In this embodiment, the maintenance of the wave reinforcements 11, 12, 40 in the corrugations can be ensured by the continuity of the rows of wave reinforcements 11, 12, 40 by means of junction reinforcing portions 26 and sleeves 30 which keep the various wave reinforcements 11, 12, 40 aligned and integral.
    In one embodiment, the wave reinforcements 11, 12 are preassembled so as to form a frame 46 which can be inserted into a plurality of longitudinal portions 6 and nodes 5 simultaneously. Such a frame 46 comprises in the example illustrated in FIG. 8 three raiis 13, the reinforcing portions 14 mounted on said rails 13 as well as the second wave reinforcements 12 interposed between said rails 13. In an alternative embodiment, this framework 46 may also include the half-second wave reinforcements 40. Such framework 46 may be provided to be inserted in MxN nodes 5, M being the number of rails 13 adjacent to the framework 46 and N being the number of nodes 5 crossed by the same rail 13, M and N being preferably odd. Such an embodiment makes it possible to consider a central intermediate portion 24 of the framework as an origin in order to calculate contraction games from a node 5 into which this intermediate central portion 24 is inserted.
    As illustrated in FIG. 9, the membrane element 41 can be directly attached to the thermally insulating barrier 42. This membrane element 41 can be fixed to the thermally insulating barrier 42 by welding the edges 37 of the metal plate 1 on anchoring strips 43 provided for this purpose in the support surface formed by the thermally insulating barrier 42. Such membrane elements 41 can be attached and successively fixed to each other juxtaposed on the thermally insulating barrier 42 in order to form a reinforced waterproof membrane anchored to the thermally insulating barrier 42.
    According to a mounting variant not illustrated, it is possible to fix, for example by means of glue or double-sided scotch®, the wave reinforcements 11, 12 on the thermally insulating barrier and subsequently attach the corrugated metal plates to the insulating barrier so as to accommodate the wave reinforcements 11, 12 previously installed in the corresponding corrugations of the corrugated metal plates.
    In Figure 9, the illustrated waterproofing membrane is being assembled. Thus, in this FIG. 9, only certain metal plates 1 of the waterproofing membrane have already been anchored on anchoring strips 43 of the thermal insulation barrier 42.
    The technique described above for producing a sealed and thermally insulating tank can be used in different types of tanks, for example to constitute the primary waterproofing membrane of an LNG tank in a land installation or in a floating structure such as a LNG tanker or other.
    With reference to FIG. 10, a cutaway view of an LNG tanker 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 waterproof barrier intended to be in contact with the LNG contained in the tank, a secondary waterproof barrier arranged between the primary waterproof barrier and the double hull 72 of the ship, and two insulating barriers arranged respectively between the primary waterproof barrier and the secondary waterproof barrier and between the secondary waterproof barrier and the double shell 72.
    In a manner known per se, loading / unloading lines 73 arranged on the upper deck of the ship can be connected, by means of appropriate connectors, to a maritime or port terminal for transferring a cargo of LNG from or to the tank 71.
    FIG. 10 shows an example of a maritime terminal comprising a loading and unloading station 75, an underwater pipe 76 and a shore installation 77. The loading and unloading station 75 is a fixed offshore installation comprising an arm mobile 74 and a tower 78 which supports the mobile arm 74. The mobile arm 74 carries a bundle of insulated flexible pipes 79 which can be connected to the loading / unloading pipes 73. The mobile arm 74 can be adjusted to suit all LNG tankers' sizes . A connection pipe, not shown, extends inside the tower 78. The loading and unloading station 75 allows the loading and unloading of the LNG carrier 70 from or to the onshore installation 77. This comprises liquefied gas storage tanks 80 and connecting pipes 81 connected by the subsea pipe 76 to the loading or unloading station 75. The subsea pipe 76 allows the transfer of the liquefied gas between the loading or unloading station 75 and the shore installation 77 over a long distance, for example 5 km, which makes it possible to keep the LNG vessel 70 at a great distance from the coast during the loading and unloading operations.
    To generate the pressure necessary for the transfer of the liquefied gas, pumps on board the ship 70 and / or pumps fitted to the shore installation 77 and / or pumps fitted to the loading and unloading station 75 are used.
    Although the invention has been described in connection with several particular embodiments, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these are within the scope of the invention.
    The use of the verb "behave", "understand" or "include" and its conjugate forms do not exclude the presence of other elements or steps than those set out in a claim.
    In the claims, any reference sign in parentheses cannot be interpreted as a limitation of the claim.
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    1. Sealed tank wall comprising a corrugated waterproof membrane, the corrugated waterproof membrane comprising a first series of parallel corrugations (3) and a second series of parallel corrugations (2) and planar portions (4) located between the corrugations ( 2, 3) and resting on a support surface, said first and second series of undulations (2, 3) extending in intersecting directions, said undulations (2, 3) having a plurality of nodes (5) at the crossings of said series of corrugations (2, 3), a wave reinforcement (11) being arranged under a corrugation (3) of the first series of corrugations (3), said wave reinforcement (11) comprising:
    - a rail (13) resting on the support surface and housed under said corrugation (3), said rail (13) extending parallel to the first series of corrugations (3) and passing through a node (5) of said corrugation (3), said rail (13) developing on either side of said node (5),
    - reinforcing portions (14, 26) attached to the rail (13) and resting on an upper surface of the rail (13) on either side of said node (5) so as to support portions (6) of said corrugation (3) located between said node (5) and the adjacent nodes (5) of said corrugation (3), an intermediate portion (24) of the rail not covered by the reinforcing portions (14, 26) and interposed between said portions reinforcement (14, 26) being housed in the node (5).
    [2" id="c-fr-0002]
    2. vessel wall according to claim 1, in which the rail (13) comprises a means for anchoring the reinforcing portions (14, 26) configured to retain said reinforcing portions (14, 26) in a thickness direction. of the tank wall.
    [3" id="c-fr-0003]
    3. vessel wall according to claim 1 or 2, wherein the reinforcing portions (14, 26) are slidably mounted on the rail (13) in a longitudinal direction of said rail (13).
    [4" id="c-fr-0004]
    4. cell wall according to one of claims 1 to 3, in which the rail (13) has a longitudinal groove (18) open on its upper face, the reinforcing portions (14, 26) comprising a tenon (23) in dovetail housed in said groove (18).
    [5" id="c-fr-0005]
    5. vessel wall according to one of claims 1 to 4, wherein the reinforcing portions (14, 26) are fixed on the rail (13).
    [6" id="c-fr-0006]
    6. cell wall according to one of claims 1 to 5, in which the wave reinforcement is a first wave reinforcement (11) and said corrugation of the first series of corrugations (3) is a first corrugation ( 3), the vessel wall further comprising two second wave reinforcements (12), said second wave reinforcements (12) being housed under a second corrugation (2), said second corrugation (2) being a corrugation of the second series of corrugations (2) forming with the first corrugation (3) the node (5) crossed by the rail (13) of the first wave reinforcement (11), the second wave reinforcements (12) being housed under the second corrugation (2) on either side of said node (5) between said node (5) and adjacent nodes (5) of the second corrugation (2) so as to support portions (6) of said second corrugation (2) located between said node (5) and the adjacent nodes (5) of said second corrugation (2).
    [7" id="c-fr-0007]
    7. vessel wall according to claim 6, in which the rail (13) of the first wave reinforcement (11) has a transverse groove (31), said transverse groove (31) being housed in the node (5), the tank wall further comprising a sleeve (30) housed in said transverse groove (31) and projecting laterally on either side of the rail (13) of the first wave reinforcement (11), the second wave reinforcements (12) being hollow, the sleeve (30) being housed in said second wave reinforcements (12) so as to keep said second wave reinforcements (12) aligned on either side of the node (5).
    [8" id="c-fr-0008]
    8. vessel wall according to claim 7, wherein the hollow portions of the second wave reinforcements have a housing (34) of complementary section to the section of the sleeve (30) so that said sleeve (30) is housed sliding in said second wave reinforcements (12) in a longitudinal direction of said second wave reinforcements (12).
    [9" id="c-fr-0009]
    9. vessel wall according to one of claims 7 to 8, wherein the transverse groove (31) of the rail (13) has an inverted "T" shaped section so that the sleeve (30) is blocked in movement relative to the rail (13) of the first wave reinforcement (11) in a thickness direction of the tank wall.
    [10" id="c-fr-0010]
    10. vessel wall according to one of claims 1 to 9, in which a plurality of wave reinforcements (11) are housed under the corrugation (3) of the first series of corrugations (3), said reinforcements d waves (11) having a rail (13) resting on the support surface and housed under the corrugation (3), said rails (13) passing through at least one node (5) in said corrugation (3) and developing from on either side of said at least one node (5), and in which the ends (25) facing two successive rails (13) housed under said undulation (3) are arranged between two successive nodes (5) of said corrugation (3), a portion of junction reinforcement (26) being attached to said ends (25) so as to support said corrugation (3) between said two successive nodes (5) and keep said ends (25) aligned.
    [11" id="c-fr-0011]
    11. Wave reinforcement (11) intended to be housed under a corrugation (3) of a corrugated sealing membrane, said wave reinforcement (11) comprising a rail (13) and a plurality of reinforcement portions ( 14, 26), said reinforcing portions (14, 26) being attached to the rail (13) and spaced apart in a longitudinal direction of the rail (13), an intermediate portion (24) of the rail (13) not covered by the portions reinforcement (14, 26) and interposed between two successive reinforcement portions (14, 26) being intended to be housed under a node (5) of the waterproofing membrane, said node (5) being formed by the intersection of two intersecting undulations (2, 3) of said sealing membrane.
    [12" id="c-fr-0012]
    12. Wave reinforcement according to claim 11, wherein the reinforcing portions (14, 26) are slidably mounted on the rail (13) in a longitudinal direction of said rail (13).
    [13" id="c-fr-0013]
    13. Portion of corrugated waterproof membrane intended to rest on a surface for supporting the wall of a sealed tank, said portion of waterproof membrane comprising:
    - a corrugated metal plate (1), said metal plate (1) comprising a first series of parallel corrugations (3) and a second series of parallel corrugations (2) and planar portions (4) located between the corrugations (2 , 3) and intended to rest on the support surface, said first and second series of undulations (2, 3) extending in intersecting directions, said undulations (2, 3) having a plurality of nodes (5) at intersections of said series of corrugations (2, 3), a row of wave reinforcement (11) being housed in a corrugation (3) of the first series of corrugations (3) between edges (37) of the metal plate (1) corrugated delimiting said corrugation (3), said row of wave reinforcements (11) comprising at least one wave reinforcement according to one of claims 11 to 12, in which the intermediate portion (24) of the rail is housed in a node (5) of said undulation (3) the portions of ren strong (14, 26) of said wave reinforcement (11) being housed in longitudinal portions (6) of said corrugation (3) located on either side of the node (5) between said node (5) and nodes (5) adjacent to said corrugation (3).
    [14" id="c-fr-0014]
    14. Vessel (70) for transporting a cold liquid product, the vessel comprising a double hull (72) and a vessel disposed in the double hull, the vessel comprising a sealed vessel wall according to one of claims 1 to 10.
    [15" id="c-fr-0015]
    15. A method of loading or unloading a ship (70) according to claim 14, in which a cold liquid product is conveyed through insulated pipes (73, 79, 76, 81) from or to a floating storage installation or terrestrial (77) to or from the vessel (71).
    [16" id="c-fr-0016]
    16. Transfer system for a cold liquid product, the system comprising a vessel (70) according to claim 14, insulated pipes (73, 79, 76, 81) arranged so as to connect the tank (71) installed in the hull from the ship to a floating or terrestrial storage facility (77) and a pump for driving a flow of cold liquid product through the isolated pipes from or to the floating or terrestrial storage facility to or from the vessel of the ship.
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    同族专利:
    公开号 | 公开日
    CN110778906A|2020-02-11|
    KR20200012758A|2020-02-05|
    FR3084347B1|2020-10-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    KR20120044054A|2010-10-27|2012-05-07|삼성중공업 주식회사|Reinforced structure for membrane of lng cargo containment|
    KR20120013244A|2011-12-16|2012-02-14|삼성중공업 주식회사|Reinforcement structure for primary barrier of lng storage tank|
    KR20150072565A|2013-12-20|2015-06-30|삼성중공업 주식회사|Reinforcement member used for membrane |FR3108267A1|2020-03-23|2021-09-24|Gaztransport Et Technigaz|Punching tool and system for connecting a plurality of wave reinforcements from a corrugated membrane to a sealed and thermally insulating tank|
    CN112173014A|2020-09-18|2021-01-05|上海蓝魂环保科技有限公司|Liquefied natural gas storehouse rectangle steel sheet and connecting piece device thereof|
    法律状态:
    2019-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2020-01-31| PLSC| Search report ready|Effective date: 20200131 |
    2020-07-31| PLFP| Fee payment|Year of fee payment: 3 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1857044A|FR3084347B1|2018-07-27|2018-07-27|WATERPROOF WALL WITH REINFORCED CORRUGATED MEMBRANE|FR1857044A| FR3084347B1|2018-07-27|2018-07-27|WATERPROOF WALL WITH REINFORCED CORRUGATED MEMBRANE|
    KR1020190089117A| KR20200012758A|2018-07-27|2019-07-23|Leaktight wall with reinforced corrugated membrane|
    CN201910683386.3A| CN110778906A|2018-07-27|2019-07-26|Sealing wall with reinforced corrugated membrane|
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