US 12,467,590 B2
Sealed and insulating tank for storing and/or transporting a liquefied gas
Guillaume De Combarieu, Saint-Remy-Leschevreuse (FR); Benoît Morel, Saint-Remy-les-Chevreuse (FR); and Guillaume Salmon Legagneur, Saint-Remy-les-Chevreuse (FR)
Assigned to GAZTRANSPORT ET TECHNIGAZ, Saint-Remy-les-Chevreuse (FR)
Appl. No. 18/702,185
Filed by GAZTRANSPORT ET TECHNIGAZ, Saint-Remy-les-Chevreuse (FR)
PCT Filed Sep. 26, 2022, PCT No. PCT/EP2022/076724
§ 371(c)(1), (2) Date Apr. 17, 2024,
PCT Pub. No. WO2023/066613, PCT Pub. Date Apr. 27, 2023.
Claims priority of application No. 2111112 (FR), filed on Oct. 19, 2021.
Prior Publication US 2025/0237356 A1, Jul. 24, 2025
Int. Cl. F17C 1/04 (2006.01); F17C 1/08 (2006.01); F17C 13/00 (2006.01)
CPC F17C 13/001 (2013.01) [F17C 1/08 (2013.01); F17C 2203/012 (2013.01); F17C 2203/0345 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0619 (2013.01); F17C 2203/0636 (2013.01); F17C 2203/0682 (2013.01); F17C 2205/018 (2013.01); F17C 2205/0188 (2013.01); F17C 2221/012 (2013.01); F17C 2223/0161 (2013.01); F17C 2223/033 (2013.01); F17C 2270/0118 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A sealed and insulating tank for storing and/or transporting a liquefied gas, the tank comprising successively, from the inside to the outside:
an internal reservoir, which is sealed and self-supporting, the internal reservoir having an inner surface for contacting the liquefied gas, and an outer surface,
an insulating barrier covering the outer surface of the internal reservoir, the insulating barrier being attached to the internal reservoir,
an outer sealed membrane covering an outer surface of the insulating barrier, the outer sealed membrane comprising a piece of sheet metal provided with bellows or corrugations so as to allow elastic deformation, the outer sealed membrane being attached to the insulating barrier or the internal reservoir, and
wherein an intermediate space located between the internal reservoir and the outer sealed membrane contains a gas phase under depression in order to press the outer sealed membrane against the outer surface of the insulating barrier, wherein the depression consists of a difference between the pressure prevailing inside the intermediate space and the atmospheric pressure.