US 11,674,643 B2
Corner structure for a sealed, thermally insulated tank
Mohamed Sassi, Saint Remy les Chevreuse (FR); and Ronan Le Bihan, Saint Remy les Chevreuse (FR)
Assigned to Gaztransport Et Technigaz, Saint Remy les Chevreuse (FR)
Appl. No. 17/266,559
Filed by Gaztransport Et Technigaz, Saint Remy les Chevreuse (FR)
PCT Filed Aug. 2, 2019, PCT No. PCT/FR2019/051899
§ 371(c)(1), (2) Date Feb. 5, 2021,
PCT Pub. No. WO2020/030871, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 1857325 (FR), filed on Aug. 6, 2018.
Prior Publication US 2021/0317950 A1, Oct. 14, 2021
Int. Cl. F17C 3/02 (2006.01); F17C 1/12 (2006.01); F17C 3/04 (2006.01)
CPC F17C 3/027 (2013.01) [F17C 1/12 (2013.01); F17C 3/04 (2013.01); F17C 2201/052 (2013.01); F17C 2203/03 (2013.01); F17C 2203/0333 (2013.01); F17C 2203/0345 (2013.01); F17C 2203/0358 (2013.01); F17C 2203/0617 (2013.01); F17C 2203/0639 (2013.01); F17C 2221/033 (2013.01); F17C 2223/0161 (2013.01); F17C 2223/033 (2013.01); F17C 2270/0107 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Corner structure for a leaktight and thermally insulating tank for storing a fluid, comprising a first wall and a second wall, each of which has successively, in a thickness direction of the said wall, from the outside to the inside of the tank, a supporting structure, a thermally insulating barrier held to the supporting structure, and a sealing membrane supported by the said thermally insulating barrier; the said corner structure being intended to be arranged in a corner between the first wall and the second wall, the corner structure comprising:
a first angle bracket having a first wing and a second wing, which respectively extend in a first plane intended to be positioned parallel to the first wall and in a second plane intended to be positioned parallel to the second wall, the first wing and the second wing being respectively intended to be welded in a leaktight manner to the sealing membrane of the first wall and the sealing membrane of the second wall; the said first angle bracket being anchored to an anchoring device intended to be fastened to the supporting structure of the first and second walls;
the anchoring device comprising a first tab and a second tab intersecting one another, the first tab and the second tab extending respectively parallel to the first and to the second plane, each of the first and second tabs comprising an external portion and an internal portion which are arranged on either side of an intersection between the first tab and the second tab, the first wing of the first angle bracket being secured to the internal portion of the first tab, and the second wing of the first angle bracket being secured to the internal portion of the second tab, the external portion of the first tab and the external portion of the second tab being intended to extend from the intersection respectively towards the supporting structure of the second wall and towards the supporting structure of the first wall, the anchoring device furthermore comprising a base on which the external portions of the first and second tabs are fastened, the base comprising a first fastening portion intended to be fastened to the supporting structure of the first wall and a second fastening portion intended to be fastened to the supporting structure of the second wall; and
the corner structure furthermore comprising a first insulating panel which is arranged in a first space delimited by the internal portion of the first tab and the external portion of the second tab, and a first lateral insulating packing element which is arranged between the first fastening portion and the internal portion of the first tab and is compressed between the first insulating panel and the external portion of the second tab.