CN114556011B - Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas - Google Patents

Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas Download PDF

Info

Publication number
CN114556011B
CN114556011B CN202080072622.9A CN202080072622A CN114556011B CN 114556011 B CN114556011 B CN 114556011B CN 202080072622 A CN202080072622 A CN 202080072622A CN 114556011 B CN114556011 B CN 114556011B
Authority
CN
China
Prior art keywords
wing
wall
section
tank
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202080072622.9A
Other languages
Chinese (zh)
Other versions
CN114556011A (en
Inventor
罗曼·德努瓦
戴维·于阿尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaztransport et Technigaz SA
Original Assignee
Gaztransport et Technigaz SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of CN114556011A publication Critical patent/CN114556011A/en
Application granted granted Critical
Publication of CN114556011B publication Critical patent/CN114556011B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—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
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • 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
    • 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

Abstract

The invention relates to a connection beam for a watercraft, wherein the connection beam (13) comprises a first section (14) and a second section (15), wherein each part comprises a hollow central core (17) comprising a first wall (20) and a second wall (21) defining a first assembly window and a second assembly window at a connection between the two sections (14, 15), wherein the connection beam (13) comprises a connection assembly (38), the connection assembly (38) having a shape complementary to the assembly window and being attached to the first section (14) and the second section (15) at the assembly window, the connection assembly (38) comprising a first wing (39) and a second wing (40), and wherein the second wing (40) is welded to the second wall (21) of the second section (15) and the second wall (21) of the first section (14) in an overlapping manner, and the first wing (39) comprises a main plate, is welded to the first part of the first wall (20) of the first section (14) in an overlapping manner and is welded to the first part of the first section (20) in an overlapping manner and is spaced apart from the first part (20) in an upward direction, the first and second portions of the first wing (39) are welded to the first and second sections (14, 15), respectively, using a primary weld bead extending in a first direction.

Description

Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas
Technical Field
The present invention relates to the field of tie beams for thermally insulated cans with membranes. In particular, the invention relates to the field of connection beams for thermally insulated sealed tanks for storing and/or transporting liquefied gas at low temperature, such as tanks for transporting liquefied petroleum gas (also called LPG) at a temperature of, for example, between-50 ℃ and 0 ℃, or tanks for transporting Liquefied Natural Gas (LNG) at about-162 ℃ at atmospheric pressure. These tanks may be mounted on shore or on floating structures. In the case of floating structures, tanks may be used for transporting liquefied gas or for receiving liquefied gas used as fuel for propelling the floating structure.
Background
Connection beams for thermally insulated sealed tanks with membranes for storing LNG are known, for example, from publication KR 200473167. The tank comprises a plurality of longitudinal tank walls and a plurality of transverse tank walls. The tank wall includes a double sealing membrane with a double insulating barrier interposed. Such tanks are incorporated in a load-bearing structure, for example formed by the hull of a ship.
Changes in the temperature and fill state of the tank impose significant stresses on the membrane of the tank during LNG loading and unloading operations. In order to prevent deterioration of the sealing and insulating properties of the tank, the primary and secondary sealing films are anchored to the load-bearing structure using connecting beams, in particular in the edge areas formed between the transverse and longitudinal walls of the tank. The connecting beams also serve to connect the primary and secondary sealing films of the transverse walls to the sealing films of the longitudinal walls in a sealing manner.
On the one hand, anchoring the connection beams to the load-bearing structure and, on the other hand, their connection to the sealing membrane enables transmission of forces between the membrane and the hull of the vessel, thus enhancing the overall structural integrity of the tank.
In KR200473167, the connection beams are formed of sections aligned with each other in the direction of the edges, and the sections define an assembly window at the connection between the two sections.
For assembling two adjacent sections, a connecting assembly having a shape complementary to the assembly window is fixed in the region of the assembly window.
Disclosure of Invention
Applicants have found that during use of such beams, significant stresses are applied in the region of the connection assembly. Furthermore, it has been found that excessive stiffness of the assembly between the beam portion and the portion connecting the assembly reduces the service life of the assembly.
The invention is based on the concept of improving the flexibility of the connecting beam, in particular in the region of the connecting assembly.
Another concept on which the invention is based is to avoid stress concentrations to increase the service life of the connection beam.
According to one embodiment, the present invention provides a connection beam for a thermally insulated sealed tank for storing liquefied gas, wherein the connection beam comprises a first section and a second section aligned with each other along a first direction, the first direction being a direction in which a tank edge extends, wherein each section comprises: a central core comprising a first wall and a second wall connected to the first wall along a first edge of the central core, and a connecting wing secured to the central core and for securing a secondary sealing membrane and a primary sealing membrane of a thermally insulated sealed can, wherein the first wall and the second wall are for extending through a primary insulation space of the can, and wherein the first wall of the first section and the first wall of the second section are parallel and define a first assembly window at a connection between the two sections, and the second wall of the first section and the second wall of the second section are parallel and define a second assembly window at a connection between the two sections, wherein the connecting beam comprises a connecting assembly having a shape complementary to the assembly window and being secured to the first section and the second section in the region of the assembly window, the connecting assembly comprising a first wing and a second wing that is in parallel with and overlapping the first wall of the first section and the second wall of the second section and a second wing of the first section and a second wing of the second section, and sealing the first and second wing of the second section, wherein the first wing and the second wing of the second section are welded together, and the first wing and the second wing of the second section and the second wing of the second section are joined together, wherein: a main board accommodated in the first assembly window; a first portion connected to the main plate and welded in an overlapping manner to a first wall of the first section; and a second portion connected to the main plate and welded to the first wall of the second section in an overlapping manner, the first portion of the first wing being separated from the second portion of the first wing by a notch in a first direction, the first and second portions of the first wing being welded to the first and second sections, respectively, using first and second main beads extending in the first direction.
Thanks to these features, the connection beam has sufficient flexibility, in particular in the area of the connection assembly, and is able to prevent any stress concentration in the area of the connection assembly. This is because the design of the first wing, in particular the recess of the first wing, and the design that the first part and the second part are spaced apart from each other by the recess, is such that the first part fixed to the first section and the second part fixed to the second section are separated for flexibility.
According to embodiments, such a connection beam may include one or more of the following features.
According to one embodiment, the first main bead of the first part and the second main bead of the second part are separated from each other in the first direction by a recess.
According to one embodiment, the first and second portions of the first wing portion are further welded to the first and second sections, respectively, using first and second secondary weld beads to form a weld loop along the edges of the recess.
According to one embodiment, the first primary weld bead and the first secondary weld bead form a continuous weld bead.
According to one embodiment, the second primary weld bead and the second secondary weld bead form a continuous weld bead.
According to one embodiment, the central core has a hollow cross-section in the form of a parallelogram and comprises a third wall connected to the first wall in the region of the second edge and a third wall connected to the second wall in the region of the third edge and to the third wall in the region of the fourth edge, the third wall and the fourth wall being intended to form a secondary sealing membrane along the can edge.
According to one embodiment, the connection wing protrudes towards the outside of the central core, the connection wing comprising:
a first secondary connection wing connected to the second edge of the central core for being welded in a sealing manner to a secondary sealing membrane of the tank,
a second secondary connection wing connected to the third edge of the central core, for being welded in a sealing manner to a secondary sealing film of the can,
a first primary connection wing connected to a first edge of the central core for being welded in a sealing manner to a primary sealing film of the tank,
-a second primary connecting wing connected to the first edge of the central core and forming an angle with the first primary connecting wing, the second primary connecting wing being intended to be welded in a sealing manner to the primary sealing membrane of the tank.
According to one embodiment, each section comprises an anchoring wing protruding towards the outside of the central core, the anchoring wing comprising:
a first secondary anchoring wing connected to the fourth edge of the central core and lying in the same plane as the second secondary connecting wing, the first secondary anchoring wing being intended to be fixed to the carrying wall of the tank,
a second secondary anchoring wing connected to the fourth edge of the central core and lying in the same plane as the first connecting wing, the second secondary anchoring wing being intended to be fixed to the carrying wall of the tank,
a first primary anchoring wing connected to the third edge of the central core and lying in the same plane as the second primary connecting wing, the first primary anchoring wing being intended to be fixed to the carrying wall of the tank,
-a second primary anchoring wing connected to the second edge of the central core and lying in the same plane as the first primary connecting wing, the second primary anchoring wing being intended to be fixed to the carrying wall of the tank.
According to one embodiment, the main plate is located in the same plane as the first wall of the central core of the first and second sections, the first and second portions being located at opposite corners of the main plate, the first wing comprising an offset portion connected to at least one edge of the main plate such that the offset portion is formed in a plane remote from the plane of the main plate, the first and second portions being located on the offset portion, the offset portion partially covering the first wall of the first section and the first wall of the second section, respectively.
According to one embodiment, the first wing includes a notch extending parallel to the first edge and formed on one of the edges of the first wing formed in a direction perpendicular to the direction of the first edge, the notch being configured to separate the main panel of the first wing from an offset portion that is adjacent to but not connected to the second wing.
According to one embodiment, the first wing part includes a cutout formed on each edge of the first wing part in a direction perpendicular to the first direction.
According to one embodiment, the offset portion of the first wing includes: a main portion extending in the direction of the first edge; and first and second branches formed at one side and the other side of the main portion and extending in a direction perpendicular to the first edge such that the offset portion is in the form of a U around the main plate of the first wing portion, the first and second branches having a width smaller than that of the main portion.
According to one embodiment, the second wing includes a notch extending parallel to the first edge and formed on one of the edges of the second wing formed in a direction perpendicular to the direction of the first edge, the notch being configured to separate the main panel of the second wing from an offset portion that is proximate to but not connected to the first wing.
According to one embodiment, the second wing part includes a cutout formed on each edge of the second wing part formed in a direction perpendicular to the first direction.
According to one embodiment, each incision base is produced in a circular form.
According to one embodiment, the second wing comprises: a main plate located in the same plane as the second walls of the central cores of the first and second sections; and an offset portion connected to at least one edge of the main board such that the offset portion is formed in a plane remote from the plane of the main board, the offset portion partially covering the second wall of the first section and the second wall of the second section.
According to one embodiment, the offset portions of the first and second wings are produced around the main plate.
According to one embodiment, the first portion of the first wing and the second portion of the first wing extend along an edge of the main panel oriented in a first direction and along an edge of the main panel oriented in a second direction perpendicular to the first direction.
According to one embodiment, the first and second main beads extend in a first and second direction. In this way, the main bead has: a portion extending opposite an edge of the main plate oriented in the first direction and a portion extending opposite an edge of the main plate oriented in the second direction.
According to one embodiment, two adjacent edges of the recess are connected to each other using a rounded corner.
In this way, the rounded corner can prevent stress from concentrating at the intersection between the two edges of the notch, which would risk the formation of crack initiation.
According to one embodiment, the connection between the edge of the first part aligned with the opening and the edge of the main plate aligned with the opening is produced using rounded corners.
According to one embodiment, the connection between the edge of the second part aligned with the opening and the edge of the main plate aligned with the opening is produced using rounded corners.
According to one embodiment, the recess is defined by an edge of the first portion, an edge of the second portion and an edge of the main panel.
According to one embodiment, the first wing includes a third portion that aligns the first and second portions with the notch, and the notch is defined by an edge of the first portion, an edge of the second portion, and an edge of the third portion.
According to one embodiment, the third portion is located on the offset portion.
According to one embodiment, the invention also provides a thermally insulated sealed tank for storing liquefied gas, the tank comprising at least a first tank wall and a second tank wall, each tank wall comprising a carrier wall, the carrier walls of the first tank wall and the second tank wall together forming an angle and meeting in the region of the tank edge, each tank wall comprising, from the carrier wall towards the interior space of the tank: the tank comprises a secondary thermal insulation barrier supported by the carrier wall, a secondary sealing membrane supported by the secondary thermal insulation barrier, a primary thermal insulation barrier supported by the secondary sealing membrane and a supported primary sealing membrane for contact with liquefied gas, the tank comprising the above-mentioned connection beam in the region of the tank edge, which connection beam is fixed to the carrier wall of the first tank wall and to the carrier wall of the second tank wall, and which connection beam is configured to connect the secondary sealing membrane of the first tank wall to the secondary sealing membrane of the second tank wall in a sealing manner.
According to one embodiment, the central core has a cross-section in the form of a parallelogram and the connecting wings protrude towards the outside of the central core, the connecting wings comprising:
a first secondary connection wing connected to a first edge of the central core and lying in a plane parallel to the secondary sealing film of the first tank wall, the first secondary connection wing being welded in a sealing manner to the secondary sealing film of the first tank wall,
a second secondary connection wing connected to the second edge of the central core and lying in a plane parallel to the secondary sealing film of the second tank wall, the second secondary connection wing being welded in a sealing manner to the secondary sealing film of the second tank wall,
a first primary connection wing connected to the third edge of the central core and lying in a plane parallel to the primary sealing film of the first tank wall, the first primary connection wing being welded in a sealing manner to the primary sealing film of the first tank wall,
-a second primary connecting wing connected to the third edge of the central core and lying in a plane parallel to the primary sealing film of the second tank wall, the second primary connecting wing being welded in a sealing manner to the primary sealing film of the second tank wall.
According to one embodiment, each section comprises an anchoring wing protruding towards the outside of the central core, the anchoring wing comprising:
a first secondary anchoring wing connected to the fourth edge of the central core and lying in the same plane as the second secondary connecting wing, the first secondary anchoring wing being fixed to the load-bearing wall of the first tank wall,
a second secondary anchoring wing connected to the fourth edge of the central core and lying in the same plane as the first secondary connecting wing, the second secondary anchoring wing being fixed to the load-bearing wall of the second tank wall,
a first primary anchoring wing connected to the third edge of the central core and lying in the same plane as the second primary connecting wing, the first primary anchoring wing being fixed to the load-bearing wall of the first tank wall,
-a second primary anchoring wing connected to the second edge of the central core and lying in the same plane as the first primary connecting wing, the second primary anchoring wing being fixed to the load-bearing wall of the second tank wall.
Such tanks may be part of a surface storage facility, for example for storing liquefied natural gas, or may be installed in a floating structure along shore or in deep water, in particular a liquefied natural gas carrier, a Floating Storage and Regasification Unit (FSRU), a floating production, storage and offloading Facility (FPSO), etc. Such a tank can also be used as a fuel reservoir in any type of conveyor.
According to one embodiment, a conveyor for transporting a cold liquid product includes a double hull and the above-described tanks disposed in the double hull.
According to one embodiment, the present invention also provides a delivery system for a cold liquid product, the system comprising: the above conveyor; an insulated conduit arranged such that a tank mounted in the hull of the transporter is connected to a floating or ground-based storage facility; and a pump for pushing the cold liquid product from the floating or ground-based storage facility through the insulated conduit to the tank of the conveyor, or for pushing the cold liquid product from the tank of the conveyor through the insulated conduit to the floating or ground-based storage facility.
According to one embodiment, the present invention also provides a connection assembly for connecting first and second sections of a connection beam of a thermally insulated sealed tank, the first and second sections being aligned with each other along a tank edge, the connection assembly comprising a first wing, a second wing forming an angle with the first wing, the first and second wings being connected to each other in the region of intersecting edges extending in a first direction, wherein the first wing comprises: a main plate extending on one side and the other side of the intersecting edge in a second direction perpendicular to the first direction; a first portion connected to the main board; and a second portion connected to the main plate, the first portion of the first wing being separated from the second portion of the first wing by a notch in a first direction.
According to one embodiment, the first wing comprises an offset portion connected to an edge of the main plate extending in a first direction and to at least one edge of the main plate extending in a second direction perpendicular to the first direction, such that the offset portion is formed in a plane different from that of the main plate, the first and second portions being located on the offset portion for being secured by overlapping on the first and second sections.
According to one embodiment, the second wing comprises a main plate at one side and at the other side of the intersecting edges, and wherein the second wing comprises an offset portion connected to an edge of the main plate extending in a first direction and to at least one edge of the main plate extending in a third direction perpendicular to the first direction, such that the offset portion is formed in a plane different from the plane of the main plate, the offset portion being for being secured by overlapping over the first and second sections.
According to one embodiment, the offset portion is connected to an edge of the main plate extending in a first direction and to two opposite edges of the main plate extending in a second or third direction.
According to one embodiment, the portion of the first wing portion comprising the offset portion and located on one side of the intersecting edge has a dimension in the second direction that is greater than the dimension of the other portion of the first wing portion located on the other side of the intersecting edge. The other portion of the first wing thus forms a first connection portion of the first wing for being secured to the first primary connection wing and the primary sealing film.
According to one embodiment, the portion of the second wing portion comprising the offset portion and located on one side of the intersecting edge has a dimension in the third direction that is larger than the dimension of the other portion of the second wing portion located on the other side of the intersecting edge. The other portion of the second wing thus forms a second connection portion of the first wing for being secured to the second primary connection wing and the primary sealing film.
According to an embodiment, the invention also provides a method for producing a connection beam in a thermally insulated sealed tank, wherein the method comprises the steps of:
-arranging along the tank edge a first section and a second section aligned with each other in the direction of the tank edge, each section comprising a hollow central core comprising a first wall and a second wall connected to the first wall along the first edge of the central core and a connecting wing; the connecting wing is secured to the central core and is used for securing the secondary sealing membrane and the primary sealing membrane of the thermally insulated sealed can, wherein the first wall and the second wall are used for extending through the primary insulation space of the can, and wherein the first wall of the first section and the first wall of the second section are parallel and define a first assembly window at the junction between the first section and the second section, and the second wall of the first section and the second wall of the second section are parallel and define a second assembly window at the junction between the first section and the second section,
Providing an insulating element and placing the insulating element in a hollow central core,
-providing a connection assembly having a shape complementary to the assembled window, the connection assembly comprising a first wing and a second wing connected to the first wing, the first wing comprising: a main board; a first portion connected to the main board; and a second portion connected to the main plate, the first portion of the first wing being separated from the second portion of the first wing by a notch in the direction of the can edge,
placing the connection assembly in the region of the assembly window such that the first wing is parallel to and encloses the first assembly window with the first wall of the first section and the first wall of the second section, the main panel of the first wing being received in the first assembly window such that the second wing is parallel to and encloses the second assembly window with the second wall of the first section and the second wall of the second section,
-welding the second wing part to the second wall of the first section and the second wall of the second section in an overlapping manner, welding the first part of the first wing part to the first wall of the first section in an overlapping manner using a first main bead extending in the direction of the can edge, and welding the second part of the first wing part to the first wall of the second section in an overlapping manner using a second main bead extending in the direction of the can edge.
According to one embodiment, the step of welding the first and second portions of the first wing to the first and second sections, respectively, is also performed using a first secondary weld bead and a second secondary weld bead to form a weld loop along the edge of the recess.
According to one embodiment, the invention also provides a method for loading or unloading such a conveyor, wherein cold liquid product is transported from a floating or ground-based storage facility to a tank of the conveyor through an insulated pipeline, or cold liquid product is transported from a tank of the conveyor to a floating or ground-based storage facility through an insulated pipeline.
Drawings
The invention will be better understood and other objects, details, features and advantages thereof will be more clearly understood from the following description of a plurality of specific embodiments thereof, given by way of non-limiting example only with reference to the accompanying drawings, in which:
fig. 1 is a partial perspective cutaway view of a thermally insulated sealed can in the region of a junction between two walls.
Fig. 2 is a partial perspective view of a connecting beam in the region of a tank edge.
Fig. 3 is an exploded perspective view of the connection beam shown in fig. 2.
Fig. 4 is a perspective view of a connection assembly according to one embodiment.
Fig. 5 is a front view of a first wing of the connection assembly according to the first embodiment.
Fig. 6 is a front view of a first wing of the connection assembly according to the second embodiment.
FIG. 7 is a schematic cross-sectional view of a tank of a liquefied natural gas carrier including a connection beam and a terminal for loading/unloading the tank.
Detailed Description
In general, the term "upper" or "above" will refer to a location that is located closer to the interior of the tank, while the term "lower" or "below" will refer to a location that is located closer to the load-bearing structure, regardless of the orientation of the tank wall relative to the earth's gravitational field. In the same way, the term "upper" or "inner" will refer to elements located closer to the interior of the tank, while "lower" or "outer" will refer to elements located closer to the load-bearing structure.
The thermally insulating sealed pot 71 and in particular the connection beam for such pot 71 will be described below.
The tank 71 incorporated in the hull of the conveyor is for example polyhedral. For example, the tank 71 may include a longitudinal bottom wall, a longitudinal top wall, two longitudinal side walls, and lower and upper longitudinal chamfer/chamfer walls.
The conventional structure of such a tank 71 is known. Thus, whereas all walls of the tank may have a similar conventional structure, only one wall area of the tank will be described.
With respect to fig. 1, a multilayer structure of a tank wall 1 according to an embodiment will now be described. The can wall 1 includes, from the outside to the inside in the thickness direction of the can: a secondary thermal insulation barrier 6 against the carrier wall 5, a sealed secondary membrane 7, a primary thermal insulation barrier 8, and a primary sealing membrane 9 for contact with the fluid stored in the tank.
The primary thermal insulation barrier 8 and the secondary thermal insulation barrier 6 are each constituted by an insulating element, and more specifically by parallelepiped insulating boxes 10 juxtaposed in a regular pattern. Different techniques for manufacturing such insulating elements are known. Each of the heat insulating boxes 10 is formed as described in, for example, publication FR 2877638. Each insulated box 10 is held on the carrying wall 5 by means of an anchoring member which can be produced in various ways according to known techniques, for example as described in publication FR 2973098. The heat insulation box 10 of the primary heat insulation barrier 8 and the heat insulation box 10 of the secondary heat insulation barrier 6 carry the primary film 9 and the secondary film 7, respectively.
The secondary 7 and primary 9 membranes are for example constituted by a series of metal plates, called slats 11, which are parallel and have folded edges and alternate with elongated welded supports 12. The slat 11 and the weld support 12 are made of an alloy having a low expansion coefficient. The slat 11 and the welding support 12 are for example formed by Made, i.e. the expansion coefficient is generally 1.2X10 - 6 K -1 Up to 2X 10 -6 K -1 The iron and nickel alloys in between, or from iron alloys having a high manganese content, typically having an expansion coefficient of about 7 x 10 -6 K -1 . The secondary film 7 and the primary film 9 typically have a thickness of between 0.5mm and 1.5mm, preferably 0.7 mm.
The slat 11 includes a planar center strip in the width direction against the insulated box 10 and the folded side edges. The folded edge extends substantially perpendicular to the planar center strip. The folded edges of the slats 11 are welded to the welded support 12 in a sealing manner. Further details concerning the production of such films can be found in publication FR 2968284.
The corner regions of the can will now be described in more detail. Fig. 1 is a perspective view of the edge region between a first tank wall 1 and a second tank wall 2.
In the region of this edge region, the carrier wall 5 of the first wall 1 and the carrier wall 5 of the second wall 2 meet in the region of the can edge 3, and the secondary film 7 and the primary film 9 of the two can walls 1, 2 are connected by an anchoring device which enables the secondary sealing film 7 and the primary sealing film 9 to be anchored on the one hand to the carrier wall 5 of the first wall 1 and on the other hand to the carrier wall 5 of the second wall 2.
More specifically, the secondary 7 and primary 9 membranes of the first wall 1 are anchored vertically to the carrier wall 5 of the second wall 2. In the same way, the secondary film 7 and the primary film 9 of the second wall 2 are anchored perpendicularly to the carrying wall 5 of the first wall 1.
The anchoring means enable the tensile forces generated by the thermal contraction of the secondary 7 and primary 9 membranes to be absorbed. The anchoring means are also capable of absorbing forces resulting from deformations of the hull, in particular bending of the longitudinal walls of the conveyor, corresponding to the beam effect of the conveyor.
The anchoring means are formed by a connecting beam 13 having an elongated form. The connecting beam 13 comprises at least a first section 14 and a second section 15, the first section 14 and the second section 15 being aligned with each other in the direction of the tank edge 3 and defining an assembly window at the connection between the two sections 14, 15, which assembly window is formed by a first assembly window 16a and a second assembly window 16 b.
Each section 14, 15 comprises a hollow central core 17, the hollow central core 17 having a cross-section in the form of a parallelogram, which cross-section is rectangular in this case, because in the example shown in fig. 1 to 3 the two carrier walls 5 form a right angle. Like all sealing membranes, the connection beam 13 can in particular be made of an alloy with a low expansion coefficient, for example of a sheet metal material with a thickness of between 0.5mm and 1.5 mm.
In order to keep the connection beams 13 on each side of the edge 3, each carrying wall 5 comprises a primary planar anchoring portion 18 and a secondary planar anchoring portion 19, the distance from the secondary planar anchoring portion 19 to the edge 3 corresponding to the thickness of the secondary thermal insulation barrier 6. The distance between the flat anchor portion 18 and the flat anchor portion 19 corresponds to the thickness of the primary thermal insulation barrier 8.
As can be better seen from fig. 2 and 3, the connecting beam 13 is composed of planar metal sheets welded together to form each of the following:
a hollow central core 17 having a rectangular or square cross section (in the case of edge areas with right angles) with side lengths equal to the distance between the primary planar anchoring portion 18 and the secondary planar anchoring portion 19 of the carrier wall, wherein each side is parallel to the carrier wall, the hollow central core comprising: a first wall 20, a second wall 21, a third wall 22 and a fourth wall 23, the second wall 21 being connected to the first wall 20 along a first edge 24 of the central core 17, the third wall 22 being connected to the first wall 20 in the region of a second edge 25, the fourth wall 23 being connected to the second wall 21 in the region of a third edge 26, the fourth wall 23 being connected to the third wall 22 in the region of a fourth edge 27;
Connection wings 28, 29, 30, 31 which project in the direction of the primary sealing film 9 and the secondary sealing film 7 of the first tank wall 1 and the second tank wall 2 towards the outside of the central core, the connection wings 28, 29, 30, 31 connecting the secondary sealing films 7 of the tank walls 1, 2 in a sealing manner and the primary sealing films 9 of the tank walls 1, 2 in a sealing manner;
anchoring wings 32, 33, 34, 35, which project towards the outside of the central core 17 in the direction of the carrier wall 5 of the tank wall 1, 2, the anchoring wings being fixed to the carrier wall 5.
The first wall 20 of the first section 14 and the first wall 20 of the second section 15 are parallel and define a first assembly window 16a at the junction between the two sections 14, 15, and the second wall 21 of the first section 14 and the second wall 21 of the second section 15 are parallel and define a second assembly window 16b at the junction between the two sections 14, 15.
The connection wing part includes:
a first secondary connection wing 28, which is connected to the first edge 24 of the central core 17 and lies in a plane parallel to the secondary sealing film 7 of the first tank wall 1, the first secondary connection wing 28 being welded in a sealing manner to the secondary sealing film 7 of the first tank wall 1,
a second secondary connection wing 29, which is connected to the second edge 25 of the central core 17 and lies in a plane parallel to the secondary sealing film 7 of the second tank wall 2, the second secondary connection wing 29 being welded in a sealing manner to the secondary sealing film 7 of the second tank wall 2,
A first primary connection wing 30, which is connected to the third edge 26 of the central core 17 and lies in a plane parallel to the primary sealing film 9 of the first tank wall 1, the first primary connection wing 30 being welded in a sealing manner to the primary sealing film 9 of the first tank wall 1,
a second primary connection wing 31, which is connected to the third edge 26 of the central core 17 and lies in a plane parallel to the primary sealing film 9 of the second tank wall 2, the second primary connection wing 31 being welded in a sealing manner to the primary sealing film 9 of the second tank wall 2.
The anchoring wing includes:
a first secondary anchoring wing 32 connected to the fourth edge 27 of the central core 17 and lying in the same plane as the second secondary connecting wing 29, the first secondary anchoring wing 32 being fixed to the secondary flat anchoring portion 18 of the first tank wall 1,
a second secondary anchoring wing 33 connected to the fourth edge 27 of the central core 17 and lying in the same plane as the first secondary connecting wing 28, the second secondary anchoring wing 33 being fixed to the secondary flat anchoring portion 18 of the second tank wall 2,
a first primary anchoring wing 34 connected to the third edge 26 of the central core 17 and lying in the same plane as the second primary connecting wing 31, the first primary anchoring wing 34 being fixed to the primary flat anchoring portion 19 of the first tank wall 1,
A second primary anchoring wing 35 connected to the second edge 25 of the central core 17 and lying in the same plane as the first primary connecting wing 30, the second primary anchoring wing 35 being fixed to the primary flat anchoring portion 19 of the second tank wall 2.
In order to ensure continuity of insulation in the region of the connecting beam 17, insulation elements 36 are arranged inside the hollow central core 17 and between the anchoring wings 32 to 35 to form a secondary thermal insulation barrier 6 and a primary thermal insulation barrier 8 in the region of the tank edge 3. The insulating element 36 may be in the form of a box filled with an insulating material, such as, for example, glass wool or perlite or insulating foam blocks.
As mentioned above and as can be seen in particular in fig. 3, the connecting beam 13 has a first assembly window 16a and a second assembly window 16b at the junction between two adjacent sections 14, 15. The assembly windows 16a, 16b are formed by cutouts in the first wall 20 and the second wall 21, respectively, of the central core 17. These assembly windows 16a, 16b use a metal joint 37, in particular enabling the third wall 22 of the first section 14 to be welded to the third wall 22 of the second section 15, the fourth wall 23 of the first section 14 to be welded to the fourth wall 23 of the second section 15, and the secondary connection wings 28, 29 of the first section 14 to be welded in a sealing manner to the secondary connection wings 28, 29 of the second section 15. This is because the third wall 22, the fourth wall 23 and the secondary connection wings 28, 29 are such that a continuity of the secondary sealing film 7 between the first tank wall 1 and the second tank wall 2 in the region of the connection beam 13 is achieved. Furthermore, the assembly windows 16a, 16b enable the insulating element 36 to be inserted into the hollow central core 17.
The connecting beam 13 comprises a connecting assembly 38, which connecting assembly 38 has a shape complementary to the assembly window 16 and is fixed to the first and second sections 14, 15 in the region of the assembly windows 16a, 16 b. Since the connection assembly 38 blocks the windows 16a, 16b, the insulating element 36 has been placed in the hollow central core 17 before the connection assembly is fixed in the area where the windows 16a, 16b are assembled.
The connection assembly 38 includes: a first wing 39 and a second wing 40, the first wing 39 being parallel to the first wall 20 of the central core 17, the second wing 40 being parallel to the second wall 21 of the central core 17 and intersecting the first wing 39 to form a cross-shaped cross-section. Thus, the first wing 39 extends on one side and the other side of the second wing 40 in the area of the intersecting edge 61, and the second wing 40 extends on one side and the other side of the first wing 39 in the area of the intersecting edge 61. In this way, on the one hand, the first wing 39 is aligned with the first wall 20 of the central core 17 of each segment 14, 15; on the other hand, the first wing 39 is aligned with the first primary connecting wing 30 of each section 14, 15. In the same way, on the one hand, the second wing 40 is aligned with the second wall 21 of the central core 17 of each segment 14, 15; on the other hand, the second wing 40 is aligned with the second primary connecting wing 29 of each section 14, 15.
The continuity of the primary sealing film 9 between the first tank wall 1 and the second tank wall 2 is created by the primary connecting wings 30, 31. However, in order to also ensure such continuity in the area of the assembled window 16, the connection assembly 38 comprises bent metal joints 41 on one side and the other side of the wings 39, 40, welded in a sealed manner to the first and second wings 39, 40 and to the primary connection wings 30, 31.
To fixedly join the first section 14 to the second section 15, as shown in fig. 2, the first wing 39 is welded to the first wall 20 of the first section 14 and the first wall 20 of the second section 15 in an overlapping manner. The second wing 40 is welded in an overlapping manner to the second wall 21 of the first section 14 and the second wall 21 of the second section 15.
Fig. 4 to 6 show the connection assembly 38, in particular the first wing 39 and the second wing 40, in more detail.
As shown in fig. 4, the second wing part 40 includes: a main plate 42, the main plate 42 being located in the same plane as the second wall 21 of the central core body 17 of each section 14, 15; and an offset portion 43, the offset portion 43 being connected to an edge of the main plate 42 located below the first wing 39 so that the offset portion 43 is formed in a plane away from the plane of the main plate 42. The offset portion 43 thus covers the second wall 21 of the first section 14 and the second wall 21 of the second section 15. Thus, the offset portion 43 of the second wing 40 is welded to the sections 14, 15. The portion of the main plate 42 above the first wing 39 and the intersecting edge 61 forms a second connection portion 60 of the second wing 40, which second connection portion 60 is aligned with the second primary connection wing 31 of the first section 14 and the second primary connection wing 31 of the second section 15 during assembly so as to be welded in this position.
The first wing 39 is configured differently than the second wing 40 because the first wing 39 requires greater flexibility to limit greater stress concentrations on the wing. That is why fig. 5 and 6 illustrate in detail the first wing 39 of the connection assembly 38.
Fig. 5 shows a first embodiment of the first wing 39. In this embodiment, the first wing 39 includes: a main plate 44, the main plate 44 being located in the same plane as the first wall 20 of the central core 17 of each section 14, 15; and an offset portion 45, the offset portion 45 being connected to an edge of the main plate 44 located below the second wing 40 so that the offset portion 45 is formed in a plane away from the plane of the main plate 44.
The offset portion 45 of the first wing 39 includes: a first portion 46, the first portion 46 being welded to the first wall 20 of the first section 14 in an overlapping manner; and a second portion 47, the second portion 47 being welded to the first wall 20 of the second section 15 in an overlapping manner. The first portion 46 and the second portion 47 are separated from each other in the direction of the can edge 3 by a recess 48.
To prevent stress concentration in the region of the recess 48, two adjacent edges of the recess 48 are connected to each other using a rounded corner 49.
In the same way as the second wing 40, the first wing 39 extends on one side and the other side of the intersecting edge 61. On one side, the first wing 39 comprises an offset portion 45 in order to fix the offset portion 45 to the first and second sections 14, 15 by overlapping in the area of the assembly window 16 a. The portion of the first wing 39 on the other side of the intersecting edge 61 forms a first connection portion 59 of the first wing 39, which first connection portion 39 is aligned with the first primary connection wing 30 of the first section 14 and the first primary connection wing 30 of the second section 15 during assembly for welding at this location.
As schematically shown in fig. 5, the first portion 46 is welded to the first wall 20 of the first section 14 by a first primary bead 50 formed on a circumferential portion of the first portion 46 and by a weld loop formed by a first secondary bead 52 along an edge of the recess 48. The second portion 47 is welded to the first wall 20 of the second section 15 by means of a second primary bead 51 formed on the circumferential portion of the second portion 47 and by means of a welding circuit formed by a second secondary bead 53 along the edge of the recess 48.
Further, as shown in fig. 4, the first wing 39 and the second wing 40 include notches 54 formed on each edge of the first wing 39 and the second wing 40, respectively, and the notches 54 extend in a direction perpendicular to the first direction. The notches 54 enable the main plates 42, 44 and offset portions 43, 45 to be separated.
Fig. 6 shows a second embodiment of the first wing 39. This embodiment differs from the first embodiment of fig. 5 in the size of the recess 48. This is because in the first embodiment the recess 48 extends as far as the main plate 44, whereas in the second embodiment the recess 48 is located only on the offset portion 45. Thus, in this embodiment, offset portion 45 includes a third portion 55, with third portion 55 corresponding to recess 48 and connecting first portion 46 and second portion 47. The recess 48 is thus formed by the edges of the first portion 46, the edges of the second portion 46 and the edges of the third portion 55. Further, in this embodiment, the offset portion 45 of the first wing 39 includes: a main portion 56, the main portion 56 extending in the direction of the first edge 24; a first branch 57 and a second branch 58, the first branch 57 and the second branch 58 being formed at one side and the other side of the main portion 56 and extending in a direction perpendicular to the first edge such that the offset portion 45 forms a U-shape around the main plate 56 of the first wing, and the width of the first branch 57 and the second branch 58 is smaller than the width of the main portion 56.
Referring to fig. 7, a cross-sectional view of a lng carrier 70 shows a sealed insulated tank 71 that is generally prismatic in shape and mounted in a double hull 72 of the carrier. The walls of the tank 71 include: a primary sealing barrier for contact with the liquid natural gas contained in the tank; a secondary sealing barrier disposed between the primary sealing barrier and the double hull 72 of the conveyor; and two insulating barriers respectively provided between the primary and secondary sealing barriers and between the secondary sealing barrier and the double hull 72.
In a manner known per se, the charging/discharging pipe 73 arranged on the upper bridge of the conveyor can be connected to a sea or port terminal using suitable connectors in order to transfer the load of LNG to the tank 71 or out of the tank 71.
Fig. 7 shows an example of a marine terminal comprising a loading and unloading station 75, an underwater pipeline 76 and a ground-based facility 77. The loading and unloading station 75 is a fixed offshore facility comprising a movable arm 74 and a tower 78, the tower 78 supporting the movable arm 74. The movable arm 74 carries a bundle of insulated flexible tubing 79, which flexible tubing 79 is connected to the load/unload tubing 73. The orientable movable arm 74 accommodates all sizes of conveyors. Inside the tower 78 there extends a connecting duct, not shown. The loading and unloading station 75 enables loading/unloading of the lng carrier 70 from/to the ground-based facility 77. The facility comprises a liquefied gas storage tank 80 and a connecting pipe 81, the connecting pipe 81 being connected to a loading or unloading station 75 via a submarine pipeline 76. The underwater piping 76 enables the transfer of liquefied gas between the loading or unloading station 75 and the ground-based facility 77 for a long distance, for example 5km, which enables the lng carrier 70 to remain a long distance off shore during loading and unloading operations.
In order to generate the pressure required for the transfer of the liquefied gas, on-board pumps and/or pumps provided by the ground-based facilities 77 and/or pumps provided by the loading and unloading stations 75 are used in the conveyor 70.
While the invention has been described in connection with several specific embodiments, it is to be understood that the invention is in no way limited thereto and that it includes all technical equivalents of the means described and combinations thereof that fall within the scope of the invention.
Use of the verb "to comprise," "to comprise," or "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim.
In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (18)

1. A connection beam (13) for a thermally insulating sealing tank (71) for storing liquefied gas, wherein the connection beam (13) comprises a first section (14) and a second section (15), the first section (14) and the second section (15) being aligned with each other along a first direction, which refers to the direction in which the tank edge (3) extends, wherein each section (14, 15) comprises a central core (17) and connection wings (28, 29, 30, 31), the central core (17) comprising a first wall (20) and a second wall (21), the second wall (21) being connected to the first wall (20) along a first edge (24) of the central core (17), the connection wings (28, 29, 30, 31) being fixed to the central core (17) and being for fixing a secondary sealing membrane (7) and a primary sealing membrane (9) of the thermally insulating sealing tank, wherein the first wall (20) and the second wall (21) are connected to the first wall (20) along a first edge (24) of the central core (17) and the first section (15) defining a first window (16) and the first section (15) at a, and the second wall (21) of the first section (14) and the second wall (21) of the second section (15) are parallel and define a second assembly window (16 b) at the connection between the first section (14) and the second section (15),
Wherein the connection beam (13) comprises a connection assembly (38), the connection assembly (38) having a shape complementary to the assembly windows (16 a, 16 b), and the connection assembly (38) being fixed to the first and second sections (14, 15) in the region of the assembly windows (16 a, 16 b), the connection assembly (38) comprising a first wing (39) and a second wing (40), the first wing (39) being parallel to the first wall (20) of the first section (14) and to the first wall (20) of the second section (15) and closing the first assembly window (16 a), the second wing (40) being connected to the first wing (39), and the second wing (40) being parallel to the second wall (21) of the first section (14) and to the second wall (21) of the second section (15) and closing the second window (16 b),
and wherein the second wing (40) is welded to the second wall (21) of the first section (14) and the second wall (21) of the second section (15) in an overlapping manner, and the first wing (39) comprises: -a main plate (44), said main plate (44) being housed in said first assembly window (16 a); -a first portion (46), the first portion (46) being connected to the main plate (44), and the first portion (46) being welded to the first wall (20) of the first section (14) in an overlapping manner; and a second portion (47), the second portion (47) being connected to the main plate (44), and the second portion (47) being welded to the first wall (20) of the second section (15) in an overlapping manner, the first portion (46) of the first wing (39) being separated from the second portion (47) of the first wing (39) by a notch (48) in the first direction, the first portion (46) and the second portion (47) of the first wing (39) being welded to the first section (14) and the second section (15) respectively using a first main bead (50) and a second main bead (51) extending in the first direction.
2. The connection beam according to claim 1, wherein the first portion (46) and the second portion (47) of the first wing (39) are further welded to the first section (14) and the second section (15) respectively using a first secondary bead (52) and a second secondary bead (53), forming a welding circuit along the edges of the recess (48).
3. The connecting beam according to claim 1 or 2, wherein the central core (17) has a hollow cross-section in the form of a parallelogram and comprises a third wall (22) and a fourth wall (23), the third wall (22) being connected to the first wall (20) in the region of a second edge (25), the fourth wall (23) being connected to the second wall (21) in the region of a third edge (26), the fourth wall (23) being connected to the third wall (22) in the region of a fourth edge (27), the third wall (22) and the fourth wall (23) being used to form a secondary sealing membrane (7) along the tank edge (3).
4. A connecting beam according to claim 3, wherein the connecting wings protrude towards the outside of the central core (12), the connecting wings comprising:
-a first secondary connection wing (28), said first secondary connection wing (28) being connected to said second edge (25) of said central core (17), said first secondary connection wing (28) being intended to be welded in a sealing manner to said secondary sealing membrane (7) of said tank,
-a second secondary connection wing (29), said second secondary connection wing (29) being connected to said third edge (26) of said central core (17), said second secondary connection wing (29) being intended to be welded in a sealing manner to said secondary sealing membrane (7) of said tank,
-a first primary connection wing (30), said first primary connection wing (30) being connected to said first edge (24) of said central core (17), said first primary connection wing (30) being intended to be welded in a sealing manner to said primary sealing film of said tank,
-a second primary connection wing (31), said second primary connection wing (31) being connected to said first edge (24) of said central core (17) and forming an angle with said first primary connection wing (30), said second primary connection wing (31) being intended to be welded in a sealing manner to said primary sealing film (9) of said tank.
5. The connection beam according to claim 1 or claim 2, wherein the main plate (44) is located in the same plane as the surface of the first wall (20) of the central core (17) of the first and second sections (14, 15), the first and second portions (46, 47) being located at opposite corners of the main plate (44), the first wing (39) comprising an offset portion (45), the offset portion (45) being connected to at least one edge of the main plate (44) such that the offset portion (45) is formed in a plane remote from the plane of the main plate (44), the first and second portions (46, 47) being located on the offset portion (45), the offset portion (45) covering the first wall (20) of the first section (14) and the first wall (20) of the second section (15), respectively.
6. The connection beam according to claim 5, wherein the first wing (39) comprises a notch (54), the notch (54) extending parallel to the first edge (24), and the notch (54) being formed on one of the edges of the first wing (39) formed in a direction perpendicular to the direction of the first edge (24), the notch (54) being configured to separate the main plate (44) of the first wing (39) from the offset portion (45), the offset portion (45) being adjacent to but not connected to the second wing (40).
7. The connection beam according to claim 1 or claim 2, wherein the second wing (40) comprises: -a main plate (42), said main plate (42) being located in the same plane as the second wall (21) of the central core (17) of the first section (14) and the second wall (21) of the central core (17) of the second section (15); and an offset portion (43), the offset portion (43) being connected to at least one edge of the main plate (42) such that the offset portion (43) is formed in a plane remote from the plane of the main plate (42), the offset portion (43) partially covering the second wall (21) of the first section (14) and the second wall (21) of the second section (15).
8. The connecting beam according to claim 7, wherein the second wing (40) comprises a notch (54), the notch (54) extending parallel to the first edge (24), and the notch (54) being formed on one of the edges of the second wing (40) formed in a direction perpendicular to the direction of the first edge (24), the notch (54) being configured to separate the main plate (42) of the second wing (40) from the offset portion (43), the offset portion (43) being adjacent to but not connected to the first wing (39).
9. A connecting beam according to claim 1 or claim 2, wherein two adjacent edges of the recess (48) are connected to each other by a rounded corner (49).
10. The connecting beam according to claim 1 or claim 2, wherein the recess (48) is defined by an edge of the first portion (46), an edge of the second portion (47) and an edge of the main plate (44).
11. The connection beam according to claim 5, wherein the first wing (39) comprises a third portion (55), the third portion (55) corresponding to the recess (48) and connecting the first portion (46) and the second portion (47), the third portion (55) being located on the offset portion (45), and the recess (48) being defined by an edge of the first portion (46), an edge of the second portion (47) and an edge of the third portion (55).
12. A thermally insulated sealed tank (71) for storing liquefied gas, the tank (71) comprising at least a first tank wall (1) and a second tank wall (2), the first tank wall (1) and the second tank wall (2) each comprising a carrier wall (5), the carrier walls (5) of the first tank wall (1) and the carrier walls (5) of the second tank wall (2) together forming an angle and meeting in the region of the tank edge (3), each tank wall (1, 2) comprising from the carrier wall (5) towards the interior space of the tank: -a secondary thermal insulation barrier (6) supported by the carrier wall (5), -a secondary sealing membrane (7) supported by the secondary thermal insulation barrier (6), -a primary thermal insulation barrier (8) supported by the secondary sealing membrane (7) and by a supported primary sealing membrane (9), the primary sealing membrane (9) being for contact with liquefied gas, the tank comprising a connecting beam (13) according to one of claims 1 to 11 in the region of the tank edge (3), the connecting beam (13) being fixed to the carrier wall (5) of the first tank wall (1) and the carrier wall (5) of the second tank wall (2), and the connecting beam (13) being configured to connect the primary sealing membrane (9) of the first tank wall (1) to the primary sealing membrane (9) of the second tank wall (2) in a sealing manner.
13. Can of claim 12, wherein the central core (17) has a cross-section in the form of a parallelogram and the connecting wings protrude towards the outside of the central core (17), the connecting wings comprising:
-a first secondary connection wing (28), which first secondary connection wing (28) is connected to a first edge (24) of the central core (17) and lies in a plane parallel to the secondary sealing film (7) of the first tank wall (1), which first secondary connection wing (28) is welded in a sealing manner to the secondary sealing film (7) of the first tank wall (1),
-a second secondary connection wing (29), which second secondary connection wing (29) is connected to a second edge (25) of the central core (17) and lies in a plane parallel to the secondary sealing film (7) of the second tank wall (2), which second secondary connection wing (29) is welded in a sealing manner to the secondary sealing film (7) of the second tank wall (2),
-a first primary connection wing (30), which first primary connection wing (30) is connected to a third edge (26) of the central core (17) and lies in a plane parallel to the primary sealing film (9) of the first tank wall (1), which first primary connection wing (30) is welded in a sealing manner to the primary sealing film (9) of the first tank wall (1),
-a second primary connection wing (31), which second primary connection wing (31) is connected to the third edge (26) of the central core (17) and lies in a plane parallel to the primary sealing film (9) of the second tank wall (2), which second primary connection wing (31) is welded in a sealing manner to the primary sealing film (9) of the second tank wall (2).
14. A conveyor (70) for transporting cold liquid products, the conveyor comprising a double hull (72) and a tank (71) according to claim 12 or claim 13 arranged in the double hull.
15. A delivery system for a cold liquid product, the system comprising: the conveyor (70) of claim 14; -an insulated conduit (73, 79, 76, 81), the insulated conduit (73, 79, 76, 81) being arranged such that the tank (71) mounted in the hull of the transporter is connected to a floating or ground-based storage facility (77); and a pump for pushing cold liquid product from the floating or ground-based storage facility through the insulated conduit to the tank of the conveyor or for pushing cold liquid product from the tank of the conveyor through the insulated conduit to the floating or ground-based storage facility.
16. A connection assembly (38) for connecting a first section (14) and a second section (15) of a connection beam (13) of a thermally insulating sealed tank, the first section (14) and the second section (15) being aligned with each other along a tank edge (3),
the connection assembly (38) comprises a first wing (39), a second wing (40) forming an angle with the first wing, the first wing (39) and the second wing (40) being connected to each other in the area of an intersecting edge (61) extending in a first direction, wherein the first wing (39) comprises: -a main plate (44), said main plate (44) extending at one side and at the other side of said intersecting edge (61) along a second direction perpendicular to said first direction; -a first portion (46), said first portion (46) being connected to said main board (44); and a second portion (47), the second portion (47) being connected to the main plate (44), the first portion (46) of the first wing (39) being separated from the second portion (47) of the first wing (39) in the first direction via a notch (48), wherein the first portion (46) of the first wing (39) is for being fixed to the first section (14) and the second portion (47) of the first wing (39) is for being fixed to the second section (15).
17. A method for producing a connection beam (13) in a thermally insulated sealed tank, wherein the method comprises the steps of:
-arranging a first section (14) and a second section (15) of the connection beam (13) along a tank edge (3), the first section (14) and the second section (15) being aligned with each other in the direction of the tank edge (3), each section (14, 15) comprising a hollow central core (17) and a connecting wing (28, 29, 30, 31), the hollow central core (17) comprising a first wall (20) and a second wall (21), the second wall (21) being connected to the first wall (20) along a first edge (24) of the central core (17), the connecting wings (28, 29, 30, 31) being fixed to the central core (17) and being for fixing a secondary sealing membrane (7) and a primary sealing membrane (9) of the heat-insulating sealing tank, wherein the first wall (20) and the second wall (21) are for extending through a primary insulation space of the tank, and wherein the first section (14) and the second section (15) define a parallel window (20) between the first section (15 a) and the first section (15), and the second wall (21) of the first section (14) and the second wall (21) of the second section (15) are parallel and define a second assembly window (16 b) at the junction between the first section (14) and the second section (15),
Providing an insulating element (36) and placing said insulating element (36) in said hollow central core (17),
-providing a connection assembly (38), the connection assembly (38) having a shape complementary to the assembly window (16 a, 16 b), the connection assembly (38) comprising a first wing (39) and a second wing (40) connected to the first wing (39), the first wing (39) comprising: a main board (44); -a first portion (46), said first portion (46) being connected to said main board (44); and a second portion (47), the second portion (47) being connected to the main board (44); the first portion (46) of the first wing (39) is separated from the second portion (47) of the first wing (39) by a recess (48) in the direction of the can edge (3),
-placing the connection assembly (38) in the area of the assembly window (16 a, 16 b) such that the first wing (39) is parallel to the first wall (20) of the first section (14) and the first wall (20) of the second section (15) and closes the first assembly window (16 a), the main plate (44) of the first wing (39) being received in the first assembly window (16 a) and such that the second wing (40) is parallel to the second wall (21) of the first section (14) and the second wall (21) of the second section (15) and closes the second assembly window (16 b),
-welding the second wing (40) to the second wall (21) of the first section (14) and the second wall (21) of the second section (15) in an overlapping manner, welding the first portion (46) of the first wing (39) to the first wall (20) of the first section (14) using a first main bead (50) extending in the direction of the can edge (3), and welding the second portion (47) of the first wing (39) to the first wall (20) of the second section (15) in an overlapping manner using a second main bead (51) extending in the direction of the can edge (3).
18. A method for loading or unloading a conveyor (70) according to claim 14, wherein cold liquid product is transported from a floating or ground-based storage facility (77) to the tanks (71) of the conveyor through insulated pipes (73, 79, 76, 81) or cold liquid product is transported from the tanks (71) of the conveyor to a floating or ground-based storage facility (77) through insulated pipes (73, 79, 76, 81).
CN202080072622.9A 2019-10-17 2020-10-16 Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas Active CN114556011B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1911617A FR3102138B1 (en) 2019-10-17 2019-10-17 Connection beam for a watertight and thermally insulating liquefied gas storage tank
FRFR1911617 2019-10-17
PCT/EP2020/079263 WO2021074413A1 (en) 2019-10-17 2020-10-16 Connection beam for a fluid-tight and thermally insulating vessel for storing liquified gas

Publications (2)

Publication Number Publication Date
CN114556011A CN114556011A (en) 2022-05-27
CN114556011B true CN114556011B (en) 2023-10-24

Family

ID=69158112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080072622.9A Active CN114556011B (en) 2019-10-17 2020-10-16 Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas

Country Status (5)

Country Link
JP (1) JP2022552540A (en)
KR (1) KR102473428B1 (en)
CN (1) CN114556011B (en)
FR (1) FR3102138B1 (en)
WO (1) WO2021074413A1 (en)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1459379A (en) * 1964-11-16 1966-04-29 Exxon Research Engineering Co New improved structure of insulated tank for storage and maritime transport of liquefied natural gas and at very low temperature
US4128069A (en) * 1976-08-10 1978-12-05 Technigaz Method of mounting a heat-insulating composite wall structure in a liquefied gas transportation and/or storage tank
CN2354008Y (en) * 1998-11-17 1999-12-15 北京燕山石油化工公司研究院 External-pressure beared container of integrated housing with two casings
DE19910924A1 (en) * 1999-03-12 2000-09-14 Mettler Toledo Gmbh Calorimeter; has coolant-evaporation device to produce complete phase transition of coolant from liquid to gas in front of cooling area in contact with edge of heatable measuring cell
CN1288842A (en) * 1999-09-14 2001-03-28 气体运输技术公司 Water-proof heat-insulation cabin with simple corner structure in ship-supporting structure
CN1776283A (en) * 2004-11-10 2006-05-24 气体运输技术公司 Sealed, thermally insulated tank with compression-resistant non-conducting-heat elements
CN101134498A (en) * 2006-09-01 2008-03-05 韩国Gas公社 Structure for liquefied natural gas storage tank
KR20110002177U (en) * 2009-08-27 2011-03-07 대우조선해양 주식회사 INVAR Tube Connecting Apparatus
CN102348925A (en) * 2009-04-14 2012-02-08 天然气运输和科技公司 Stopper for a secondary diaphragm of an lng vat
CN202944529U (en) * 2011-03-22 2013-05-22 天然气运输和科技公司 Heat-insulation impermeable cabin, and ship and transportation system provided with the same
CN103597266A (en) * 2011-07-06 2014-02-19 气体运输技术公司 Thermally-insulating sealed tank built into a load-bearing structure
CN203880389U (en) * 2014-06-13 2014-10-15 重庆国际复合材料有限公司 Transfer and sharing system of liquid oxygen between plurality of liquid oxygen storage tanks
CN105164460A (en) * 2013-04-12 2015-12-16 气体运输科技公司 Corner structure of sealed and thermally insulating tank for storing fluid
CN105283705A (en) * 2013-04-12 2016-01-27 气体运输科技公司 Sealed and thermally insulating tank for storing a fluid
CN106164564A (en) * 2014-03-04 2016-11-23 气体运输技术公司 A kind of sealing comprising the deflecting element allowing corner gas flowing and insulating vessel
CN109630879A (en) * 2017-09-29 2019-04-16 气体运输技术公司 Installation is used to seal and the method for the anchor of heat-insulated storage tank
EP3473915A1 (en) * 2017-10-20 2019-04-24 Gaztransport et Technigaz Sealed and thermally insulating vessel
CN110114609A (en) * 2016-12-09 2019-08-09 气体运输技术公司 The hermetically sealed can of thermal insulation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2968284B1 (en) 2010-12-01 2013-12-20 Gaztransp Et Technigaz SEAL BARRIER FOR A TANK WALL
AU2015299825B2 (en) 2014-08-06 2018-02-22 Kc Lng Tech Co., Ltd. Corner structure of LNG storage tank

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1459379A (en) * 1964-11-16 1966-04-29 Exxon Research Engineering Co New improved structure of insulated tank for storage and maritime transport of liquefied natural gas and at very low temperature
US4128069A (en) * 1976-08-10 1978-12-05 Technigaz Method of mounting a heat-insulating composite wall structure in a liquefied gas transportation and/or storage tank
CN2354008Y (en) * 1998-11-17 1999-12-15 北京燕山石油化工公司研究院 External-pressure beared container of integrated housing with two casings
DE19910924A1 (en) * 1999-03-12 2000-09-14 Mettler Toledo Gmbh Calorimeter; has coolant-evaporation device to produce complete phase transition of coolant from liquid to gas in front of cooling area in contact with edge of heatable measuring cell
CN1288842A (en) * 1999-09-14 2001-03-28 气体运输技术公司 Water-proof heat-insulation cabin with simple corner structure in ship-supporting structure
CN1776283A (en) * 2004-11-10 2006-05-24 气体运输技术公司 Sealed, thermally insulated tank with compression-resistant non-conducting-heat elements
CN101134498A (en) * 2006-09-01 2008-03-05 韩国Gas公社 Structure for liquefied natural gas storage tank
CN102348925A (en) * 2009-04-14 2012-02-08 天然气运输和科技公司 Stopper for a secondary diaphragm of an lng vat
KR20110002177U (en) * 2009-08-27 2011-03-07 대우조선해양 주식회사 INVAR Tube Connecting Apparatus
CN202944529U (en) * 2011-03-22 2013-05-22 天然气运输和科技公司 Heat-insulation impermeable cabin, and ship and transportation system provided with the same
CN103597266A (en) * 2011-07-06 2014-02-19 气体运输技术公司 Thermally-insulating sealed tank built into a load-bearing structure
CN105164460A (en) * 2013-04-12 2015-12-16 气体运输科技公司 Corner structure of sealed and thermally insulating tank for storing fluid
CN105283705A (en) * 2013-04-12 2016-01-27 气体运输科技公司 Sealed and thermally insulating tank for storing a fluid
CN106164564A (en) * 2014-03-04 2016-11-23 气体运输技术公司 A kind of sealing comprising the deflecting element allowing corner gas flowing and insulating vessel
CN203880389U (en) * 2014-06-13 2014-10-15 重庆国际复合材料有限公司 Transfer and sharing system of liquid oxygen between plurality of liquid oxygen storage tanks
CN110114609A (en) * 2016-12-09 2019-08-09 气体运输技术公司 The hermetically sealed can of thermal insulation
CN109630879A (en) * 2017-09-29 2019-04-16 气体运输技术公司 Installation is used to seal and the method for the anchor of heat-insulated storage tank
EP3473915A1 (en) * 2017-10-20 2019-04-24 Gaztransport et Technigaz Sealed and thermally insulating vessel
CN109695819A (en) * 2017-10-20 2019-04-30 气体运输技术公司 Seal insulated tank

Also Published As

Publication number Publication date
FR3102138B1 (en) 2022-05-20
FR3102138A1 (en) 2021-04-23
KR20210046646A (en) 2021-04-28
JP2022552540A (en) 2022-12-16
KR102473428B1 (en) 2022-12-02
WO2021074413A1 (en) 2021-04-22
CN114556011A (en) 2022-05-27
WO2021074413A9 (en) 2021-06-10

Similar Documents

Publication Publication Date Title
KR102209265B1 (en) Sealed, thermally insulating vessel comprising a corner part
KR102202778B1 (en) Sealed tank with corrugated sealing membranes
KR102498803B1 (en) sealed and insulated tank
JP7268969B2 (en) Closed insulated tank with angle bracket
CN109695819B (en) Sealed heat insulation tank
KR20140130708A (en) Sealed and thermally insulating tank comprising a corner piece
CN111742173B (en) Fluid-tight container wall comprising a sealing membrane with reinforced areas
JP7195071B2 (en) Hermetically sealed insulated tank
CN112119257B (en) Closed tank wall comprising a sealing film
CN112513516B (en) Sealed and thermally insulating container with continuous corrugation in liquid dome
CN114556011B (en) Connecting beam for a liquid-tight and thermally insulating container for storing liquefied gas
CN111630311B (en) Sealed heat insulation tank
CN114375379B (en) Sealed tank, transfer system, ship and method for loading or unloading the same
CN115667784A (en) Liquid dome for a tank for liquefied gas
KR20230012570A (en) Liquefied gas storage facility
RU2817458C2 (en) Sealing membrane for sealed fluid storage tank
CN111656083B (en) Sealed heat insulation tank
RU2815750C2 (en) Sealed and heat-insulating reservoir
KR102657084B1 (en) Rigid tank walls with sealing membrane
CN110892189B (en) Fluid sealing membrane and method of assembling a fluid sealing membrane
RU2780113C2 (en) Sealed tank wall containing sealing membrane
KR20220167318A (en) Liquefied Gas Storage Facility
CN116336374A (en) Storage facility, transfer system and method for liquefied gas
CN113775920A (en) Tank wall for a fluid-tight and thermally insulating tank
KR20220038360A (en) Sealed Insulated Tanks for Floating Structures

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant