CN117722587A - Anchoring band and method for producing such an anchoring band - Google Patents

Anchoring band and method for producing such an anchoring band Download PDF

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Publication number
CN117722587A
CN117722587A CN202311077891.6A CN202311077891A CN117722587A CN 117722587 A CN117722587 A CN 117722587A CN 202311077891 A CN202311077891 A CN 202311077891A CN 117722587 A CN117722587 A CN 117722587A
Authority
CN
China
Prior art keywords
plane
anchoring
anchoring band
orifice
panel
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.)
Pending
Application number
CN202311077891.6A
Other languages
Chinese (zh)
Inventor
本杰明·勒考特
M·亨利
朱利奥·塞萨尔·兰格尔·蒙罗伊
皮埃里克·吉尔明
纪尧姆·萨尔蒙·勒加尼厄
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
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Filing date
Publication date
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of CN117722587A publication Critical patent/CN117722587A/en
Pending legal-status Critical Current

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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
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2201/05—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
    • F17C2203/0354—Wood
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0619—Single wall with two layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F17C2203/0651—Invar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2181—Metal working processes, e.g. deep drawing, stamping or cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The present invention relates to an anchoring band and a method for manufacturing such an anchoring band. The anchor strap includes: -a lower surface extending in a first plane; -an upper surface extending in a second plane, the second plane being substantially parallel to the first plane and being arranged above the first plane along an axis substantially perpendicular to the first plane and the second plane; -at least one through hole extending around the axis and passing through the anchoring band between a first aperture and a second aperture, the first aperture being arranged in the second plane, the at least one through hole increasing in cross section between a middle aperture arranged between the first aperture and the second aperture and the first aperture. The anchoring band is characterized in that the second aperture is located in a third plane substantially parallel to the first plane and the second plane, the third plane being arranged below the second plane along the axis.

Description

Anchoring band and method for producing such an anchoring band
Technical Field
The present invention relates to an anchoring band and a method for manufacturing an anchoring band.
Such an anchoring band is more particularly intended for sealed and thermally insulated tanks for transporting and/or storing liquefied gases.
Background
Hereinafter, the terms "exterior" and "interior" are used conventionally to refer to the interior and exterior of a tank to determine the relative position of one element with respect to another element.
Each tank wall has at least one sealing membrane, a thermal barrier and a load bearing structure arranged in series in a thickness direction from the interior toward the exterior of the tank, the at least one sealing membrane being in contact with the fluid contained within the tank. Alternatively, the wall may also include a two-stage seal and insulation.
Figure 1 shows an insulation panel 1 designed for use in sealed insulation cans known in the prior art. In this case, the panel 1 is substantially rectangular parallelepiped. The panel comprises a layer of insulating filler 2 sandwiched between a rigid inner panel 3 and a rigid outer panel 4. The rigid inner and outer plates 3, 4 are for example plywood bonded to the insulating-filler layer 2. The insulating filler may be an insulating polymer foam, in particular a polyurethane-based foam. The polymer foam may advantageously be reinforced with glass fibers to help reduce heat shrinkage. The panel 1 may be a shape other than a rectangular parallelepiped.
For example, the panel 1 is three meters long and one meter wide. The plywood inner panel 3 may be 12mm thick, the plywood outer panel 4 may be 9mm thick, and the insulating filler layer 2 may be 200mm thick. These dimensions and thicknesses are, of course, given as guidelines and will vary depending on the intended use and the desired thermal insulation properties. In addition, other insulating materials may form the insulating filler of the panel.
The inner surface of the panel 1 comprises anchoring bands or metal plates 5, 6 intended to anchor a metal plate 7 forming a sealing film (an example of a metal plate 7 is in fig. 2Shown). For example, the anchor strap 5 extends longitudinally along the inner panel 3 of the panel 1, and the anchor strap 6 extends transversely. The anchor straps 5, 6 are typically riveted to the inner panel 3 of the panel 1. The anchoring bands 5, 6 may in particular be made of stainless steel or of tileThe main characteristic of the manufactured tile is that the expansion coefficient is very low because the tile is an iron-nickel alloy. The thickness of the anchoring bands 5, 6 in the prior art is for example about 2mm. The metal plate 7 is anchored to the anchor strips 5, 6 by intermittent welding. Thus, the anchor straps 5, 6 are typically riveted to the panel 1. The metal plate 7 is welded to the anchor strap, thereby fastening the metal plate 7 to the panel 1.
The sealing film is obtained by assembling a plurality of metal plates 7 welded together along their edges. The metal plate 7 generally comprises a first series of parallel corrugations, called low corrugations 8, extending in the y-direction, and a second series of parallel corrugations, called high corrugations 9, extending in the x-direction. The directions x and y of the series of corrugations 8, 9 are perpendicular. The corrugations 8, 9 protrude from the inner surface of the metal plate 7. In this case, the edges of the metal plate 7 are parallel to the corrugations 8, 9. The metal plate 7 has a plurality of flat surfaces 11 between the corrugations 8, 9. The terms "high" and "low" are relative, meaning that the first series of corrugations 8 are not as high as the second series of corrugations 9. At the intersection 10 between the low corrugation 8 and the high corrugation 9, the low corrugation is discontinuous, i.e. interrupted by a corrugation which extends the top edge of the high corrugation 9 so as to protrude above the top edge of the low corrugation 8. The corrugations 8, 9 provide considerable flexibility and enable the sealing membrane to deform under the stress, in particular thermal stress, created by the (very low temperature) fluid stored in the tank.
The metal plate 7 is made of a stainless steel plate or an aluminum plate formed by bending or stretching. Other metals and alloys may also be used. For example, the metal plate 7 has a thickness of about 1.2 mm. Other thicknesses are possible, but it is noted that thickening the metal plate 7 increases its cost and generally increases the stiffness of the corrugations.
The metal plate 7 is positioned on the insulation panel 1. The plurality of metal plates 7 may be offset, for example, by half the length and half the width with respect to the insulation panel 1. Thus, the wall may comprise a plurality of insulating panels 1 and a plurality of metal sheets 7, each of said metal sheets 7 extending over four adjacent insulating panels 1.
One of the longitudinal edges 12 of the metal sheets 7 is anchored to the insulation panel 1 by welding said longitudinal edge 12 to the anchoring band 5. Similarly, one of the lateral edges 13 is anchored to the insulation panel 1 by welding said lateral edge 13 to the anchoring band 6. The anchoring zone between the metal sheet 7 and the insulating panel 1 is located on both sides of the corrugations 8, 9. In other words, the anchoring zone is formed at the interface between the flat portions 11 of the edges 12, 13 of the metal sheet 7 and the anchoring bands 5, 6, wherein the flat portions 11 of the edges 12, 13 of the metal sheet 7 extend on both sides of the corrugations 8, 9.
The anchor straps 5, 6 are typically arranged in slots in the panel 1 in the rigid inner panel 3 (typically plywood). Each anchor strap is secured to the rigid inner panel by at least one rivet. Typically, the anchor strap has two through holes to enable fastening to the panel by two rivets.
Fig. 3 is a cross-sectional view of the anchor strap 5 assembled to the panel 1 (i.e., to the plate 3) using rivets 14 as in the prior art. Through holes in the anchor strap intended to receive rivets are formed by perforation or machining. Typically, the anchoring band comprises two through holes, each intended to receive a rivet to fasten the anchoring band to the panel 1.
The cross-sectional view in fig. 3 shows that once the rivet has been positioned, the rivet does not protrude beyond the anchoring band 5, the anchoring band 5 being arranged in a groove in the panel 1. The top of the rivet 14 is arranged at a distance d from the upper surface of the anchor strap. In other words, the shape of the rivet is such that the rivet can be positioned under the anchor strap. Thus, the rivet is integrated in the panel 1. Thus, the assembly does not have protrusions that can damage the sealing membrane in terms of positioning and potential scoring.
This solution, while generally satisfactory, has a drawback: the rivet 14 is in conical contact with the anchoring band 5 and the top of the panel. Thus, the rivet and anchor strap assembly is overstressed due to the geometry of the assembly: cone-cone contact, and precise positioning of the rivet in the through hole. Therefore, the assembly cannot be properly controlled. This can lead to assembly defects. For example, if the rivet is positioned incorrectly, particularly due to manufacturing tolerances, the geometry of such an assembly can lead to rivet protrusion problems.
Disclosure of Invention
The present invention aims to overcome some or all of the aforementioned problems by proposing a new anchoring band geometry that is capable of integrating different types of rivets. The proposed anchoring band ensures easy assembly without geometrically excessive stresses.
To this end, the invention relates to an anchoring band comprising:
a lower surface extending in a first plane,
an upper surface extending in a second plane substantially parallel to the first plane and arranged above the first plane along an axis substantially perpendicular to the first plane and the second plane,
at least one through hole extending around the axis and passing through the anchoring band between a first orifice and a second orifice, the first orifice being arranged in a second plane, the at least one through hole increasing in cross section between an intermediate orifice and the first orifice, the intermediate orifice being arranged between the first orifice and the second orifice,
the anchoring band is characterized in that the second aperture is located in a third plane substantially parallel to the first plane and the second plane, the third plane being arranged below the second plane along the axis.
Advantageously, the at least one through hole has a substantially constant cross section between the second orifice and the intermediate orifice.
In one embodiment, the anchoring band according to the present invention further comprises a bearing surface extending substantially perpendicular to the axis around the periphery of the intermediate aperture.
Advantageously, the bearing surface is arranged at a distance from the upper surface, preferably greater than 0.7mm, even more preferably greater than 2mm.
In one embodiment, the intermediate aperture is located in a first plane.
Advantageously, the anchoring band according to the invention is made of metal, preferably stainless steel.
The invention also relates to a method for manufacturing such an anchoring band, comprising the steps of:
-providing a belt of the type comprising,
and the following steps, performed simultaneously or sequentially in any order:
perforating the strip along an axis using a perforating punch to form at least one through hole,
-taper stretching the strip using a stretching punch with a tapered tip.
In an embodiment of the method according to the invention, the stretching step comprises a step for forming a support surface extending substantially perpendicular to the axis around the periphery of the intermediate aperture.
In one embodiment of the invention, the manufacturing method according to the invention may further comprise the step of cutting the strip to obtain an anchoring strip.
In one embodiment of the invention, the stretching step is performed after the perforating step.
In one embodiment of the invention, the perforating step and the stretching step of the method are performed consecutively at two different stations, the two different stations being: a first station comprising a perforation punch and a first die, and a second station comprising a stretch punch and a second die, there being a transfer operation from one station to the next at each step.
In another embodiment of the invention, the perforating step and the stretching step of the method are performed continuously at the same station, which comprises a punch and a die tool, at each of which the punch is replaced.
The invention also relates to a wall for a sealed and thermally insulated tank of liquefied gas, comprising, arranged consecutively in the thickness direction from the outside inwards:
at least one insulating panel designed to rest directly or indirectly on a load-bearing structure,
a sealing film resting on the insulating panel and intended to be in contact with the liquefied gas contained in the tank,
the heat insulation panel comprises at least one anchoring zone in which an anchoring band according to the invention is arranged, the at least one anchoring zone matching the shape of the anchoring band rigidly fastened to the heat insulation panel, and a sealing film fastened to the upper surface of the at least one anchoring band.
The invention also relates to a sealed and thermally insulated tank for a vessel containing liquefied gas, the sealed and thermally insulated tank comprising at least one such wall.
Finally, the invention also relates to a vessel comprising a hull forming a load-bearing structure and a tank anchored to said load-bearing structure.
The invention also relates to a computer program comprising computer executable instructions which, when executed by a processor, cause the processor to control an additive manufacturing apparatus to manufacture an anchor belt as described above.
In an alternative to the foregoing method, the present invention also relates to a method of manufacturing an anchor strap by additive manufacturing, the method comprising:
-obtaining an electronic file representing the geometry of the anchoring band, and
-controlling the additive manufacturing apparatus to manufacture the anchoring band according to the geometry specified in the electronic file in one or more additive manufacturing steps.
Here, the term "additive manufacturing" generally refers to a manufacturing process in which successive layers of material are placed one after the other to "build" or "additive manufacture" the anchoring band layer by layer.
This can be compared to a material-removing manufacturing process (e.g., milling or drilling) in which material is continuously removed to manufacture the anchor strip. The successive layers are typically fused together to form a unitary component that may contain the various integrated sub-components.
In particular, the manufacturing method enables the anchor strap to be formed as a single piece and also enables the anchor strap to have a wider variety of features than when using previous manufacturing methods.
For example, significant variations may be applied to the characteristics of the anchor band, e.g., the flare between the intermediate aperture and the first aperture varies, which may be difficult to achieve using conventional manufacturing techniques.
A common example of additive manufacturing is 3D printing. However, other additive manufacturing methods are available.
Rapid prototyping or rapid manufacturing is also a term that may be used to describe additive manufacturing methods.
Additive manufacturing may manufacture any suitable size and shape with various features that may not be achievable using previous manufacturing methods.
Additive manufacturing can create complex geometries with little or no waste without the use of any kind of tools, dies, or fixtures. When machining the anchoring band from a metal coil, a portion of the metal coil is cut/machined and discarded, while the only material used in additive manufacturing is the material required to form the part. Thus, the anchoring band may be manufactured for a particular application, i.e. the anchoring band may be adapted to a particular environment.
Suitable additive manufacturing techniques according to the present invention include, for example, fused deposition modeling (fused deposition modelling, FDM), selective laser sintering (selective laser sintering, SLS), 3D printing (e.g., inkjet and laser), stereolithography (SLA), direct selective laser sintering (direct selective laser sintering, DSLS), e-beam sintering (electron beam sintering, EBS), e-beam melting (electron beam melting, EBM), laser engineered net-shape (laser engineered net shaping, LENS), e-beam additive manufacturing (electron beam additive manufacturing, EBAM), laser net-shape manufacturing (laser net shape manufacturing, LNSM), direct metal deposition (direct metal deposition, DMD), digital light processing (digital light processing, DLP), continuous digital light processing (continuous digital light processing, CDLP), direct selective laser melting (direct selective laser melting, DSLM), selective laser melting (selective laser melting, SLA), direct metal laser melting (direct metal laser melting, DMLM), direct metal laser sintering (direct metal laser sintering, DMLS), material jetting (material j), nanoparticle jetting (nanoparticle jetting, NPJ), drop-on-demand (drop D, jet binder (jjet, jet-jet, multi-layer, and other methods known in the art.
Additive manufacturing as described herein may be used to form components using any suitable material.
For example, the material may be plastic, metal, composite, ceramic, polymer, epoxy, or any other suitable material, which may be solid, liquid, powder, sheet, wire, or other form.
More specifically, the anchoring bands described herein may be formed of a portion, all, or a combination thereof of materials including, but not limited to, pure Metals, nickel alloys, chromium alloys, titanium alloys, magnesium alloys, aluminum alloys, iron alloys, stainless steel, nickel-based, or cobalt-based superalloys (e.g., specialty Metals) corporationName sold superalloy). These materials are examples of materials suitable for use in an additive manufacturing process that may be suitable for use in manufacturing the anchor bands described herein. For an example of the use of an anchor tape as a sealing film on plywood panels, stainless steel is preferably used.
As mentioned above, the additive manufacturing methods described herein are capable of forming a single component, such as an anchor strap, from several materials.
Thus, the anchoring bands described herein may be formed from any suitable combination of the foregoing materials. For example, the component may include several layers, segments, or portions formed using different materials, methods, and/or on different additive manufacturing machines. Thus, components may be constructed using different materials and material properties to meet the requirements of a particular application.
The formation of the anchoring band by additive manufacturing reduces waste compared to conventional material removal manufacturing techniques or processes in which the part is cut from a larger piece of material.
The structure of the product (anchoring band) can be digitally represented in the form of a design file.
A design file or Computer Aided Design (CAD) file is a configuration file that encodes one or more surface or volume constructs of the shape of a product. In other words, the design file represents the geometric layout or shape of the product.
The design file may exist in any existing or future file format. For example, the design file may exist in a stereolithography or "standard tessellation language (standard tessellation language)" (. Stl) format created for 3D system stereolithography CAD programs, or the design file may exist in an American Society of Mechanical Engineers (ASME) additive manufacturing file (. Amf) format, which is an extensible markup language (XML) based format designed to enable any CAD software to describe the shape and composition of any three-dimensional object to be manufactured on any additive manufacturing printer.
Other examples of design file formats include AutoCAD files (.dwg), blender files (.blend), parasolid files (.x_t), 3D manufacturing format files (.3mf), autodesk files (3 ds), collada files (.dae), and Wavefront files (.obj), however many other file formats exist.
The design file may be generated using modeling (e.g., CAD modeling) and/or by scanning the surface of the product to measure the surface layout of the product.
Once the design file is obtained, the design file may be converted into a set of computer-executable instructions that, when executed by the processor, cause the processor to control the additive manufacturing apparatus to produce a product according to the geometric layout specified in the design file.
The conversion may convert the design file into slices or layers to be sequentially formed by the additive manufacturing apparatus.
The instructions (also referred to as geometric codes or "G codes") may be calibrated for a particular additive manufacturing apparatus and may specify the amount and precise location of material to be formed at each step of the manufacturing process.
As discussed above, the forming operation may be performed by deposition, sintering, or any other form of additive manufacturing method.
The code or instructions may be converted between different formats, converted to a set of data signals and transmitted, received as a set of data information, converted to code, and stored as needed.
The instructions may be inputs to the additive manufacturing system and may come from a part designer, an intellectual property provider, a design company, an operator or owner of the additive manufacturing system, or other source.
The additive manufacturing system can execute instructions to manufacture a product using any of the techniques or methods described herein.
The design file or computer-executable instructions may be stored on a computer-readable storage medium (temporary or non-temporary) (e.g., memory, storage system, etc.) that stores computer-readable code or instructions representing the article of manufacture.
As mentioned, computer readable code or instructions defining a product may be used to physically generate an object when the code or instructions are executed by an additive manufacturing system.
For example, the instructions may include a precisely defined three-dimensional model of the product, and may be derived from various well-known Computer Aided Design (CAD) software systems (e.g.Design cad 3D Max, etc.).
Alternatively, a model or prototype of the component may be scanned to obtain three-dimensional data about the component.
Thus, the additive manufacturing apparatus may be instructed to print the product by controlling the additive manufacturing apparatus using computer-executable instructions.
In view of the foregoing, embodiments include manufacturing methods using additive manufacturing.
This comprises the steps of: a design file representing the product is obtained and the additive manufacturing apparatus is instructed to manufacture the product in assembled or unassembled form according to the design file.
The additive manufacturing apparatus may have a processor configured to automatically convert the design file into computer-executable instructions to control the manufacture of the product.
In these embodiments, once the design file enters the additive manufacturing apparatus, the design file may automatically cause the product to be manufactured.
Thus, in this embodiment, the design file may be considered as computer-executable instructions that cause the additive manufacturing apparatus to manufacture the product.
Alternatively, the design file may be converted to instructions by an external computer system, the resulting computer-executable instructions being provided to the additive manufacturing apparatus.
In view of the foregoing, using the methods according to the invention and the operational design and manufacture objects described in this specification, it may be implemented using digital electronic circuitry, or using computer software, firmware, or hardware including the structures described in this specification and their structural equivalents, or combinations of one or more of the above.
For example, the hardware may include processors, microprocessors, electronic circuits, electronic components, integrated circuits, and the like.
The objects may be achieved using a method according to the subject matter of the present invention, encoded on a computer storage medium using one or more computer programs, i.e., one or more modules of computer program instructions, to be executed by, or to control the operation of, a data processing apparatus.
Alternatively or additionally, the program instructions may be encoded on an artificially generated propagated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiving devices for execution by data processing apparatus.
The computer storage medium may be or be included in a computer readable storage device, a computer readable storage substrate, a random access or serial memory array or device, or a combination of one or more of these.
Furthermore, while the computer storage medium is not a propagated signal, the computer storage medium may be a source or destination of computer program instructions encoded in an artificially generated propagated signal.
Computer storage media may also be, or be included in, one or more separate components or physical media (e.g., a number of CDs, disks, or other storage devices).
While additive manufacturing techniques are described herein as being capable of manufacturing complex objects by building the objects point by point, layer by layer, typically along a vertical direction, other manufacturing methods are possible and fall within the scope of the invention.
For example, although the discussion herein refers to adding materials to form a continuous layer, one skilled in the art will appreciate that the methods and structures described herein may be practiced by any additive manufacturing technique or other manufacturing technique.
Aspects of the described invention may include one or more examples, embodiments, or features, alone or in various combinations, whether or not specifically described (or claimed) in such combinations or alone.
Drawings
These and other features and advantages of the invention will emerge more clearly from the following description, given by way of non-limiting example, with reference to the accompanying drawings, in which:
figure 1 shows an insulation panel 1 designed for use in sealed insulation cans known in the prior art,
figure 2 shows an example of a prior art metal plate forming a sealing film,
figure 3 is a cross-sectional view of the assembly of the anchoring band to the panel using rivets as in the prior art,
figure 4 is a cross-sectional view of a first embodiment of an anchoring band according to the present invention,
figure 5 shows a second embodiment of an anchoring band according to the invention,
figure 6 is a cross-sectional view of a second embodiment of an anchoring band according to the present invention,
figure 7 is a cross-sectional view of a third embodiment of an anchoring band according to the present invention,
figure 8 is a cross-sectional view of an anchor band assembly according to the present invention on a panel portion,
fig. 9 schematically shows a method for manufacturing an anchoring band according to the present invention.
For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements.
Detailed Description
Figure 1 shows an insulation panel 1 designed for use in sealed insulation cans known in the prior art. The figure has been described above.
Fig. 2 shows an example of a metal plate forming a sealing film in the prior art, as described above.
Fig. 3 is a cross-sectional view of the assembly of an anchor band to a panel using rivets as in the prior art. The figure has been described above.
Hereinafter, the term "anchor strap" is also referred to as an anchor plate, and refers to a strap that is placed on a panel, preferably in a dedicated slot in the panel that matches the shape of the anchor strap, and secured to the panel to rigidly connect the strap to the panel. The anchor straps then form a fastening support to fasten the sealing membrane to the panel, typically by welding.
Fig. 4 is a cross-sectional view of a first embodiment of an anchoring band 20 according to the present invention. The anchoring band 20 comprises a lower surface 21 extending in a first plane P1. The terms "lower" and "upper" refer to the relative position of one element to another along an axis perpendicular to surface 21. The anchor strap 20 includes an upper surface 22 extending in a second plane P2, the second plane P2 being substantially parallel to the first plane P1 and disposed above the first plane P1 along an axis Z substantially perpendicular to the first plane P1 and the second plane P2. In other words, moving along axis Z in the direction shown in fig. 4, surface 22 is positioned above surface 21.
The anchoring band 20 comprises at least one through hole 23, the at least one through hole 23 extending around the axis Z and passing through the anchoring band between a first orifice 24 and a second orifice 25, the first orifice being arranged in the second plane P2, the at least one through hole 23 increasing in cross section between an intermediate orifice 26 arranged between the first orifice 24 and the second orifice 25 and the first orifice 24. In other words, the through hole 23 has a shape that flares from the intermediate aperture toward the first aperture.
According to the invention, the second orifice 25 is located in a third plane P3 substantially parallel to the first plane P1 and to the second plane P2, the third plane P3 being arranged along the axis Z below the second plane P2. In other words, the anchoring band extends mainly between its lower surface 21 and its upper surface 22, and has a protrusion at the through hole 23 extending below the lower surface 21.
The anchoring band according to the invention advantageously comprises two through holes 23 spaced apart from each other, as shown in fig. 5.
It should be noted that the anchoring band 20 is fastened to the relevant panel by means of rivets placed in each through hole 23. Thus, the panel (or panel slot) is positioned below the anchor strap 20 in contact with the lower surface 21. The rivet is positioned in the through hole 23. The flared portion between the intermediate aperture 26 and the first aperture 24 is designed to receive the rivet head to prevent the rivet head from protruding. The invention has been described using rivets as an example. The same principle applies to any other anchoring element having a head, such as a screw.
The particular geometry of the anchor strap according to the invention, with its protrusions below the lower surface, enables the anchor strap to be in contact with the panel, whereby the anchor strap 20 can be riveted to the panel. Furthermore, the rivet head is not in tapered-tapered contact with the panel-anchor strap assembly. Such an anchor strap arrangement enables the use of new assembly methods that were previously not feasible.
Fig. 5 shows a second embodiment of an anchoring band 30 according to the present invention. As shown, the anchoring band preferably comprises two through holes 23. This second embodiment is described in detail below.
Fig. 6 is a cross-sectional view of a second embodiment of an anchoring band 30 according to the present invention. The anchor strap 30 is identical to the anchor strap 20 described above. The anchor band 30 further includes a bearing surface 31, the bearing surface 31 extending substantially perpendicular to the axis Z, around a perimeter 32 of the intermediate aperture 26.
The bearing surface 31 provides a bearing surface for the head of an anchor element such as a rivet or screw. An advantage of providing the bearing surface 31 around the intermediate aperture is that the positioning function can be separated from the supporting function. This ensures that the part is not subjected to excessive stress. Furthermore, different types of anchoring elements may be used to fasten the anchoring band to the panel.
Advantageously, the support surface is arranged at a distance from the upper surface 22, which distance between the support surface and the upper surface 22 is preferably greater than 0.7mm, or greater than 1mm, even more preferably greater than 2mm. This distance ensures that the rivet head is fully integrated in the anchoring band once in the fastening position. The rivet does not extend beyond the upper surface 22. This ensures that there are no protrusions that could damage the sealing membrane.
In the figures provided, at least one through hole 23 has a substantially constant cross section between the second aperture 25 and the intermediate aperture 26. This portion of the through hole 23 is designed to receive the shank of the rivet. However, while less beneficial from an industrial point of view, the portion of the anchoring band according to the invention may have a variable cross section.
Fig. 7 is a cross-sectional view of a third embodiment of an anchoring band 40 according to the present invention. The anchoring band is identical to the anchoring band 30 disclosed above. In the embodiment of the anchoring band 40 shown in fig. 7, the intermediate aperture 26 is located in a first plane. In this arrangement, the distance between the upper surface 22 and the bearing surface 31 thus corresponds to the main thickness of the anchoring band. This feature facilitates managing the protrusion of the rivet head. Indeed, the thickness of the anchor strap may be used to determine the maximum allowable height of the rivet head, i.e., not extend the rivet head beyond the upper surface 22.
Advantageously, the anchoring band according to the invention is made of metal, preferably stainless steel. However, other metals compatible with the intended use of the anchor strap (welded to the metal film) may also be used. For example, the anchoring band may also be made of invar @, for exampleAn iron-nickel alloy having a low coefficient of expansion).
Fig. 8 is a cross-sectional view of an assembly 50 of the present invention for assembling an anchor strap 40 on a portion of a panel 1. The anchoring band according to the invention is positioned in a groove in the panel 1 provided for this purpose. Thus, the groove in the panel 1 has a surface matching the shape of the lower surface 21 and the lower protrusion of the anchor band 40. The contact area between the anchor strap and the slot in the panel is indicated by reference numeral 52. When the anchor band 40 is fastened to the panel 1, rivets (not shown) are positioned in the through holes 23. More specifically, the stem of the rivet slides into the through hole 23 in the anchor strap 40 and into the through hole in the panel 1 aligned with the through hole 23. Unlike the prior art (see fig. 3), the assembly allows for manufacturing tolerances due to the presence of the gap. This optimizes the rivet-anchor strap assembly to more effectively meet the assembly criteria.
Fig. 9 schematically shows a method for manufacturing an anchoring band according to the present invention. The method for manufacturing the anchoring band comprises the steps of:
providing a belt (step 100) comprising a lower surface 21 extending in a first plane P1 and an upper surface 22 extending in a second plane P2, the second plane P2 being substantially parallel to the first plane P1 and being arranged above the first plane P1 along an axis Z substantially perpendicular to the first plane P1 and the second plane P2,
and the following steps, performed simultaneously or sequentially in any order:
perforating the strip along an axis Z using a perforating punch (typically a drill bit) (step 110) to form at least one (preferably two) through holes 23, at least one (preferably two) through hole 23 passing through the anchoring strip between a first orifice 24 arranged in the second plane P2 and a second orifice 25,
conical stretching of the strip using a stretching punch with a conical tip (step 120) such that the at least one through hole 23 increases in cross section from the intermediate orifice 26 arranged between the first orifice 24 and the second orifice 25 towards the first orifice 24, and the second orifice 25 is located in a third plane P3 substantially parallel to the first plane P1 and the second plane P2, the third plane P3 being arranged below the second plane P2 along the axis Z.
Advantageously, step 110 and step 120 are performed simultaneously, and the perforation step is performed by stretching. In other words, only one pressing step is required to create the through hole and the lower protrusion of the anchor strap.
According to the manufacturing method of the present invention, the lower protrusion of the anchor band is created by perforation and stretching. Furthermore, the material of the anchoring band is deformed during manufacture, rather than being traditionally machined by milling. The manufacturing method does not generate any scraps. Furthermore, since milling is not involved, lubrication is not required. Another advantage of the absence of lubrication is that no special cleaning, traditionally performed using various chemicals and ultrasonic baths, is required.
Finally, the use of controlled punches improves quality levels. This enables quality control requirements to be reduced by controlling maintenance.
In another embodiment of the manufacturing method according to the invention, the stretching step 120 comprises a step 125 for forming a bearing surface 31, the bearing surface 31 extending substantially perpendicular to the axis Z, around the perimeter 32 of the intermediate orifice 26. In this embodiment, the tip of the punch used is shaped as a cone, the top of which has been cut out by a plane. In other words, the tip of the punch used is a truncated cone.
If the tape is provided in the form of a roll in step 100, the manufacturing method according to the invention further comprises a step 130 of cutting the tape. The cutting step may be performed before or after the perforating step 110, or before or after the stretching step 120. The cutting step 130 provides the anchoring band with a suitable length and width.
If the tape is provided in the form of a roll in step 100, the method may optionally include the step of flattening the roll to obtain a sheet of desired thickness.
In one embodiment of the manufacturing method according to the invention, the stretching step 120 is performed after the perforating step 110.
In one embodiment of the manufacturing method of the present invention, the perforating step 110 and the stretching step 120 of the method are performed consecutively at two different stations: a first station comprising a perforation punch and a first die, and a second station comprising a stretch punch and a second die, there being a transfer operation from one station to the next at each step. For example, referring to fig. 5, a perforating step is performed to form holes 23 (region a). At this stage, region B has not yet operated. The anchoring band is then moved to enable perforation of the second hole 23 (in region B). Region a now further follows the line and a stretching step may be performed.
In an alternative embodiment of the manufacturing method of the present invention, the perforating step 110 and the stretching step 120 of the method are performed continuously at the same station, which comprises a punch and a die tool, at each of which the punch is replaced. With each movement (preferably, vertical movement) of the tool, the anchoring band moves a considerable amount of one tool. For example, referring to fig. 5, a perforating step is performed to form holes 23 (region a). At this stage, region B has not yet operated. After this, the tool is replaced (the perforating punch is replaced with a stretching punch) so that the stretching step is performed at the hole 23 in the area a. The anchoring band is then moved to perform the perforation step, forming holes 23 in region B, and so on. Alternatively, the anchor band may be stationary and the tool moved from zone a to zone B. The same principle can be used for cutting of the web if desired. This enables one machine to perform all steps simultaneously.
This novel manufacturing method according to the present invention may help to significantly reduce the cost of the anchoring band. In practice, the production rate decreases from about 10 seconds (excluding the cleaning bath) to about 3 seconds per anchoring band (two or eight through holes, depending on the mould used). The direct result is a reduction in production costs. Furthermore, as explained above, different types of rivets are compatible with the anchoring band according to the present invention, so a wide variety of rivet suppliers can be used.
The invention also relates to a wall for a sealed and thermally insulated tank of liquefied gas, comprising, arranged consecutively in the thickness direction from the outside inwards:
at least one insulating panel 1, designed to rest directly or indirectly on a load-bearing structure,
a sealing film 7 resting on the insulating panel 1 and intended to be in contact with the liquefied gas contained in the tank,
the insulation panel 1 comprises at least one anchoring zone 52, in which anchoring zone 52 the anchoring band as described above is arranged, the at least one anchoring zone 52 matching the shape of the anchoring band rigidly fastened to the insulation panel 1, and the sealing film 7 is fastened to the upper surface 22 of the at least one anchoring band.
The invention also relates to a sealed and thermally insulated tank for a vessel containing liquefied gas, the sealed and thermally insulated tank comprising at least one wall as described above.
Finally, the invention relates to a vessel comprising a hull forming a load-bearing structure and a tank anchored to said load-bearing structure.
It will be generally more apparent to those skilled in the art that various modifications may be made to the above-described embodiments in view of the above disclosure. In the appended claims, the terms used should not be construed to limit the claims to the embodiments set forth in the specification, but include all equivalents of the wording of the claims that are intended to be covered and that fall within the general knowledge of those skilled in the art.

Claims (8)

1. A wall of a sealed and thermally insulated tank for liquefied gas, said wall comprising, arranged continuously in a thickness direction from the outside to the inside:
at least one insulating panel (1) designed to rest directly or indirectly on a load-bearing structure,
a sealing film (7) resting on the insulating panel (1) and intended to be in contact with the liquefied gas contained in the tank,
the insulation panel (1) comprises at least one anchoring zone (52) in which an anchoring band (20, 30, 40) is arranged, said anchoring band comprising:
a lower surface (21) extending in a first plane (P1),
an upper surface (22) extending in a second plane (P2), said second plane (P2) being substantially parallel to said first plane (P1) and being arranged above said first plane (P1) along an axis (Z) substantially perpendicular to said first plane (P1) and to said second plane (P2),
-at least one through hole (23) extending around the axis (Z) and passing through the anchoring band between a first orifice (24) arranged in the second plane (P2) and a second orifice (25), the at least one through hole (23) increasing in cross section between an intermediate orifice (26) arranged between the first orifice (24) and the second orifice (25),
the second aperture (25) is located in a third plane (P3) substantially parallel to the first plane (P1) and the second plane (P2), the third plane (P3) being arranged below the second plane (P2) along the axis (Z), the at least one anchoring zone (52) matches the shape of the anchoring strips (20, 30, 40) rigidly fastened to the insulating panel (1), and the sealing film (7) is fastened to an upper surface (22) of at least one of the anchoring strips (20, 30, 40).
2. The wall according to claim 1, wherein the at least one through hole (23) has a substantially constant cross section between the second orifice (25) and the intermediate orifice (26).
3. The wall according to claim 1 or 2, further comprising a bearing surface (31), the bearing surface (31) extending substantially perpendicular to the axis (Z) around a perimeter (32) of the intermediate aperture (26).
4. A wall according to claim 3, wherein the bearing surface is arranged at a distance from the upper surface (22), preferably greater than 0.7mm, even more preferably greater than 2mm.
5. The wall of any one of claims 1 to 4, wherein the intermediate aperture is located in the first plane.
6. A wall according to any one of claims 1 to 5, wherein the wall is made of metal, preferably stainless steel.
7. A sealed and thermally insulated tank of a vessel intended to contain liquefied gas, comprising at least one wall according to any one of claims 1 to 6.
8. A vessel comprising a hull and a tank according to claim 7, the hull forming a load bearing structure, the tank being anchored to the load bearing structure.
CN202311077891.6A 2022-09-16 2023-08-24 Anchoring band and method for producing such an anchoring band Pending CN117722587A (en)

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FR2209333A FR3139868B1 (en) 2022-09-16 2022-09-16 Anchor strip and method of manufacturing such an anchor strip

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Publication number Priority date Publication date Assignee Title
US6515256B1 (en) * 2000-04-13 2003-02-04 Vincent P. Battaglia Process for laser machining continuous metal strip
FR2826630B1 (en) * 2001-06-29 2003-10-24 Gaz Transport & Technigaz WATERPROOF AND THERMALLY INSULATING TANK WITH LONGITUDINAL OBLIQUE AREAS
US8716599B2 (en) * 2011-07-18 2014-05-06 Don Hoff Pipeline continuity connector
FR2985560B1 (en) * 2012-01-09 2015-08-21 Gaztransp Et Technigaz SEALED AND INSULATED TANK WITH PRIMARY RETENTION MEANS
KR101751838B1 (en) * 2015-08-21 2017-07-19 대우조선해양 주식회사 Insulation structure of liquefied natural gas cargo tank without anchor strip, cargo tank having the structure, and liquefied natural gas carrier
FR3082274B1 (en) * 2018-06-06 2021-11-19 Gaztransport Et Technigaz WATERPROOF AND THERMALLY INSULATED TANK

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