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Sealed, thermally insulating tank

A heat shield, sealing film technology for fixed volume gas storage tanks, gas/liquid distribution and storage, ship construction details, etc., which can solve problems such as easy bending, lack of sealing, corrugation cracking, etc.

Active Publication Date: 2020-09-04
GAZTRANSPORT & TECHNIGAZ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] - the planar middle part of the slats of the sealing membrane is prone to buckling and may rupture, resulting in a lack of seal;
[0010] -The turned-over edge of the slat and the area where the flap edge meets the flat mid-section of the slat is prone to deformation, waviness and possible cracking resulting in a lack of seal
[0011] However, making the minimum gap distance between the lateral edges of the insulation panels consistent can compromise the thermal performance of the insulation barrier

Method used

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  • Sealed, thermally insulating tank
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  • Sealed, thermally insulating tank

Examples

Experimental program
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Embodiment Construction

[0067] By convention, in the description, the elements of the wall 1 of the hermetically insulated tank are described using a two-dimensional orthogonal reference frame defined by two axes x and y. The axis x corresponds to the longitudinal direction and the axis y corresponds to the transverse direction. The longitudinal direction corresponds to the direction in which the slats and welded brackets extend. According to an advantageous embodiment, the axis x also corresponds to the longitudinal direction of the vessel when the tank is integrated into the vessel's double hull.

[0068] figure 1 Shown is a multi-layer structure of a wall 1 of a hermetically insulated tank for storing liquefied fluids such as liquefied natural gas (GNL). Each wall 1 of the tank comprises, in the thickness direction, in turn from the outside to the inside of the tank, a secondary thermal insulation barrier 2 held on a carrying structure 3, a secondary sealing membrane 4 against this secondary the...

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PUM

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Abstract

The invention relates to a sealed, thermally insulating tank for storing a liquefied gas. The tank comprises a wall (1) having a thermally insulating barrier (5) and a sealing membrane (6) resting against the thermally insulating barrier (5), the thermally insulating barrier (5) comprises at least two insulating panels (14), and each insulating panel includes a top board (19) defining a support surface (36). The sealing membrane (6) abuts against the support surface (36), and the top board (19) of one of the two insulating panels (14) comprises, along the transverse edge (32) of the insulatingpanel (14) that faces the other insulating panel (14), a recess (38) which extends perpendicularly to the longitudinal direction, from one end to the other of the insulating panel (14), such that thestrakes are not supported by the support surface of the insulating panel (14) along the transverse edge (32) of the insulating panel (14).

Description

technical field [0001] The invention relates to the field of hermetically sealed tanks with membranes for the storage and / or transport of fluids, such as liquefied gases. [0002] Sealed insulated tanks with membranes are especially used for storage of liquefied natural gas (GNL) stored at about -163°C at atmospheric pressure. These tanks can be installed on land or on floating structures. Where these tanks are installed on a floating structure, the tanks may be used to transport liquefied natural gas or to contain liquefied natural gas used as fuel for propelling the floating structure. Background technique [0003] Document WO2014096600 discloses a sealed and insulated tank for storing liquefied natural gas, the tank is arranged in a load-bearing structure, the tank wall has a multi-layer structure, that is, from the outside to the inside of the tank includes: a primary thermal insulation barrier, anchored in the load-bearing structure Structurally; a primary sealing mem...

Claims

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Application Information

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IPC IPC(8): F17C3/02
CPCF17C3/027F17C2201/0157F17C2201/052F17C2203/0358F17C2221/033F17C2223/0161F17C2223/033F17C2260/011F17C2260/033F17C2270/0107F17C3/02B63B25/16
Inventor 安托万·菲利普塞德里克·莫雷尔塞巴斯蒂安·德拉诺安托万·布戈
Owner GAZTRANSPORT & TECHNIGAZ