Sealed and thermally insulating tank

Patent metadata

Field	Value
Publication number	US-2019011084-A1
Application number	US-201816025364-A
Country	US
Kind code	A1
Filing date	Jul 2, 2018
Priority date	Jul 4, 2017
Publication date	Jan 10, 2019
Grant date	—

Abstract

Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank having a plurality of tank walls, a thermally insulating barrier and a sealed membrane, a first bearing wall and second bearing wall forming an edge corner, the thermally insulating barrier of a first tank wall having a row of edging blocks, a row of anchor strips anchored to the second bearing wall by a row of anchor rods, a first and second of edging blocks each having a groove formed in thickness of said edging block, a first and a second of said anchor rods being housed respectively in the groove of the first and second edging blocks, one anchor strip in the row of anchor strips is supported overlapping the first edging block and the second edging block, the anchor strip being coupled to the first anchor rod and to the second anchor rod.

First claim

1 . Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank comprising a plurality of tank walls, the tank walls comprising a thermally insulating barrier anchored on the corresponding bearing wall and a sealed membrane borne by said thermally insulating barrier, a first bearing wall ( 2 ) of the bearing structure and a second bearing wall ( 3 ) of the bearing structure forming an edge corner ( 1 ) of the bearing structure,
the thermally insulating barrier of a first tank wall comprising a row of edging blocks ( 5 ) anchored on the first bearing wall ( 2 ) and juxtaposed along the edge corner ( 1 ) in such a way as to form a support surface parallel to the first bearing wall ( 2 ), the tank comprising a row of anchor strips ( 45 ) extending parallel to the edge corner ( 1 ), said anchor strips ( 45 ) being borne by the first support surface and anchored to the second bearing wall ( 3 ) by a row of anchor rods ( 12 ), one said anchor rod ( 12 ) comprising a first end anchored to the second bearing wall ( 3 ) and a second end coupled to the row of anchor strips ( 45 ) in order to transmit a tensile load between the row of anchor strips ( 45 ) and the second bearing wall ( 3 ), one end portion of the sealed membrane of the first tank wall turned towards the edge corner ( 1 ) being fixed in a sealed manner on said row of anchor strips, a first and a second of said edging blocks ( 5 ) each comprising a groove ( 32 ) formed in the thickness of said edging block ( 5 ) from an upper face of said edging block ( 5 ) in such a way as to form a space accessible from the second bearing wall ( 3 ) in the edging block, a first and a second of said anchor rods ( 12 ) being housed respectively in the groove ( 32 ) of the first and second edging blocks ( 5 ), in which an anchor strip ( 45 ) in the row of anchor strips ( 45 ) is supported overlapping the first edging block ( 5 ) and the second edging block ( 5 ), said anchor strip ( 45 ) comprising a first tab and a second tab projecting respectively from two opposite end portions of the anchor strip ( 45 ) in the direction of the first bearing wall ( 3 ), the first and second tabs being engaged respectively in the groove ( 32 ) of the first edging block ( 5 ) and of the second edging block ( 5 ) and being respectively coupled to the first anchor rod ( 12 ) and to the second anchor rod ( 12 ).

2 . Sealed and thermally insulating tank according to claim 1 , in which said first and second edging blocks ( 5 ) have an equal length taken in a direction parallel to the edge corner ( 1 ), and in which the anchor strip ( 45 ) supported overlapping the first edging block ( 5 ) and the second edging block ( 5 ) has a length taken in the direction parallel to the edge corner ( 1 ) which is less than said length of the edging blocks ( 5 ).

3 . Sealed and thermally insulating tank according to claim 1 , in which the groove ( 32 ) of the first edging block ( 5 ) constitutes a first groove ( 32 ), the first edging block ( 5 ) further comprising a second groove ( 32 ) formed in the thickness of said first edging block ( 5 ) from the upper face of said edging block ( 5 ) and spaced from the first groove ( 32 ) along the edge corner ( 1 ) in such a way as to form a second space accessible from the second bearing wall ( 3 ), a third of the anchor rods ( 12 ) being housed in the second groove ( 32 ) of said edging block ( 5 ),
in which an anchor strip ( 45 ) in the row of anchor strips ( 45 ) is disposed only on the first edging block ( 5 ), said anchor strip ( 45 ) comprising a first tab and a second tab projecting respectively from two opposite end portions of the anchor strip ( 45 ) in the direction of the first bearing wall ( 2 ), the first and second tabs being engaged respectively in the first and second grooves ( 32 ) of the first edging block ( 5 ) and being respectively coupled to the first anchor rod ( 12 ) and to the third anchor rod ( 12 ).

4 . Sealed and thermally insulating tank according to claim 1 , in which the thermally insulating barrier of a second tank wall comprises a second row of edging blocks ( 5 ) anchored on the second bearing wall ( 3 ) and juxtaposed along the edge corner ( 1 ) in such a way as to form a second support surface parallel to the second bearing wall ( 3 ),
the tank comprising a second row of anchor strips ( 45 ) extending parallel to the edge corner ( 1 ), said anchor strips ( 45 ) being borne by the second support surface and anchored to the first bearing wall ( 2 ) by a second row of anchor rods ( 12 ), a said anchor rod ( 12 ) comprising a first end anchored to the first bearing wall ( 2 ) and a second end coupled to the second row of anchor strips ( 45 ) in order to transmit a tensile load between the second row of anchor strips ( 45 ) and the first bearing wall ( 2 ), an end portion of the sealed membrane of the second tank wall turned towards the edge corner ( 1 ) being fixed in a sealed manner on said second row of anchor strips ( 45 ), a first and a second of said edging blocks ( 5 ) in the second row each comprising a groove ( 32 ) formed in the thickness of said edging block ( 5 ) from an upper face of said edging block ( 5 ) in such a way as to form a space accessible from the first bearing wall ( 2 ) in the edging block ( 5 ), a first and a second of said anchor rods ( 12 ) in the second row being housed respectively in the groove ( 32 ) of the first and second edging blocks ( 5 ) in the second row, in which an anchor strip ( 45 ) in the second row of anchor strips ( 45 ) is supported overlapping the first edging block ( 5 ) and the second edging block ( 5 ) in the second row, said anchor strip ( 45 ) comprising a first tab and a second tab projecting respectively from two opposite end portions of the anchor strip ( 45 ) in the direction of the second bearing wall ( 3 ), the first and second tabs being engaged respectively in the groove ( 32 ) of the first edging block ( 5 ) and of the second edging block ( 5 ) in the second row and being respectively coupled to the first anchor rod ( 12 ) and to the second anchor rod ( 12 ) in the second row.

5 . Sealed and thermally insulating tank according to claim 4 , in which the grooves ( 32 ) of the first and second edging blocks ( 5 ) in the row of edging blocks ( 5 ) of the first tank wall are located facing the grooves ( 32 ) of the first and second edging blocks ( 5 ) in the second row of edging blocks ( 5 ) in line with the edge corner ( 1 ), in such a way that the first anchor rod ( 12 ) and the second anchor rod ( 12 ) anchored to the first bearing wall ( 2 ) respectively intersect the first anchor rod ( 12 ) and the second anchor rod ( 12 ) anchored to the second bearing wall ( 3 ).

6 . Sealed and thermally insulating tank according to claim 4 , further comprising angle pieces disposed on the edging blocks ( 5 ) of the first tank wall and of the second tank wall, the angle pieces comprising two planar portions located in the planes of the sealed membrane of the first and second tank walls, said planar portions of said angle pieces being fixed in a sealed manner to at least one anchor strip ( 45 ) in the rows of anchor strips ( 45 ) in such a way as to connect in a sealed manner the sealed membrane of the first tank wall and the sealed membrane of the second tank wall.

7 . Sealed and thermally insulating tank according to claim 4 , in which the bearing structure comprises a third bearing wall on which the thermally insulating barrier of a third tank wall is anchored, said third tank wall comprising a sealed membrane lying on the thermally insulating barrier of said third tank wall, the third bearing wall forming with the first bearing wall and the second bearing wall a corner of the bearing structure located at one end of said edge corner,
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Assignees

• Gaztransport Et Technigaz

Inventors

• Durand Francois
• Le Roux Guillaume
• Bougault Johan
• Berger Vincent

Classifications

• F17C2201/052

  large (>1000 m3) · CPC title

• F17C2203/035

  Glass wool · CPC title

• F17C2221/033

  Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG · CPC title

• F17C2270/0107

  Wall panels · CPC title

• F17C2205/0355

  Insulation thereof · CPC title