LNG container with a connecting device which connects a secondary impermeable barrier to a load bearing structure

摘要

A liquefied natural gas container including a loadbearing structure and an impermeable and thermally insulated tank designed to contain liquefied natural gas. Each tank wall having in succession, in a direction of a thickness, proceeding from an inside of the tank to an outside, a primary impermeable barrier, a primary thermally insulating barrier, a secondary impermeable barrier, and a secondary thermally insulating barrier. The secondary impermeable barrier of a vertical wall includes a first impermeable sheet at the top of the wall and a connecting device which impermeably connects the first impermeable sheet to the loadbearing structure. The connecting device includes a first metal plate parallel to the first impermeable sheet, and a second impermeable sheet which is on the one hand bonded to the first impermeable sheet, and on the other hand connected to the first metal plate.

主权项

1. A liquefied natural gas container comprising;
a loadbearing structure (11, 111) and an impermeable and thermally insulated tank designed to contain liquefied natural gas, said tank comprising a plurality of tank walls fixed to said loadbearing structure, each tank wall having in succession, in a direction of thickness along the longitudinal direction of the tank wall, proceeding from an inside of said tank to an outside, a primary impermeable barrier, a primary thermally insulating barrier, a secondary impermeable barrier and a secondary thermally insulating barrier, said tank walls comprising at least one vertical wall, the secondary impermeable barrier located on said vertical wall comprising a first impermeable sheet (16, 116) at the top of said vertical wall and a connecting device which impermeably connects said first impermeable sheet (16, 116) to said loadbearing structure (11, 111), wherein said connecting device comprises a first metal plate (22, 122) parallel to said first impermeable sheet (16, 116) and a second impermeable sheet (17, 117), wherein the second impermeable sheet (17, 117) comprises a first portion which is bonded to said first impermeable sheet (16, 116) and a second portion which is connected to said first metal plate (22, 122), the first portion and the second portion of the second impermeable sheet (17, 117) being parallel.