Abstract:
1,155,116. Liquefied gas storage containers. TECHNIGAZ. 19 Sept., 1966 [22 Sept., 1965], No. 41704/66. Heading F4P. The fluid-tight inner vertical cylindrical shell 13, Fig. 1, of a heat insulated double-walled liquefied gas container and having a top 22 and generally flat bottom 21 is constructed of flexible sheet metal plates welded at their overlapping edges and having a first group of spaced parallel corrugations intersected at right angles by a second group of similar corrugations, and the inner shell is secured at spaced points to the external shell 2 by brackets 47, Fig. 7, extending through the heat insulation 14 between the two shells; the outer cylindrical shell which may be of steel or concrete having a flat bottom 3 resting on a prepared earth base 4. The first group of corrugations 16 of the lateral cylindrical wall 17 of the shell 13 extend continuously and vertically whilst the corrugations 18 of the second group extend round circumference of wall 17. The first group of corrugations of the base 21 comprise alternate radially extending corrugations 23, 23 1 which divide the base into sectors 24 and those sectors on either side of a corrugation 23 1 have further continuous corrugations 25 parallel thereto but of differing lengths and are intersected at right angles by parallel corrugations 26 which form the second group. The roof 22 of shell 13 is similarly constructed and all corrugations project inwardly. The bracket 47 shown in Fig. 7 comprises four radial ribs welded at one end to a steel plate 50 embedded in the concrete wall of shell 2 and secured at the other end of a screw 52 to the shell 13. A modified bracket shown in Fig. 11 comprising a tube 60 welded at its outer end to a steel plate 50 and closed at its inner end by a plate 62 carrying a stud 63 which projects through the shell 13 and secured by a nut 66. The heat insulation 14 comprises panels 58, 59 of rigid expanded polyurethane or expanded polyvinylchloride. A central orifice 28 in the roof of the container is closed by a plate 29 having filler pipes 32 and a manhole 31.
Abstract:
An arrangement for supporting a cylindrical or spherical rigid tank comprising several spaced bearing devices distributed about said tank and comprising each one a horizontal bracket member integral with and projecting radially outwards from said tank in its horizontal axial or diametral plane, a horizontal arm below and parallel to said bracket member and pivoted to a fixed fulcrum in the vertical plane tangent to the geometrical envelope of the neutral fibers of the tank wall and two parallel links spaced outwards from said fulcrum and pivoted to said bracket member and arm to form a deformable vertical parallelogram.
Abstract:
A PRESSURE TANK FOR STORING AT LEAST PARTIALLY LIQUID FLUID COMPRISING AN OUTER CASING OF SELF-SUPPORTING STRUCTURE, AN INNER IMPERVIOUS, METALLIC, THIN-WALLED, FLUID-CONFINING, MEMBRANE-LIKE ENVELOPE CARRIED BY HEAT-INSULATING MATERIALS FILLING THE INTERMEDIATE SPACE LEFT BETWEEN SAID ENVELOPE AND CASING, AND OPEN-ENDED DUCT MEANS EXTENDING THROUGHT THE ENVELOPE WALL FOR PERMANENTLY INTERCONNECTING SAID INTERMEDIATE SPACE AND THAT PORTION OF THE
SPACE INSIDE SAID ENVELOPE WHICH CONTAINS THE FLUID GASEOUS PHASE FOR EQUALIZING THE PRESSURES THEREIN APPLIED TO BOTH OPPOSITE WALL SIDES OF SAID ENVELOPE TO TRANSFER THE GASEOUS FLUID PRESSURE DIRECTLY TO SAID CASING.
Abstract:
1,187,304. Tanks in ships. TECHNIGAZ. 18 May, 1967 [20 May, 1966], No. 23061/67. Headings B7A and B7S. [Also in Division F4] A generally rectangular liquefied gas storage container comprises an inner liquid-containing tank formed of primary and secondary barrier walls 17, 16 of Fig. 2 of thin flexible corrugated metal surrounded by heat insulation material e.g. foamed polyurethane (not shown) and which is itself surrounded by a rigid supporting wall structure, e.g. a ship's hull 1, and the spaced adjacent edges 2 1 , 2 of the inner tank and support structure, and referred to as corners are connected together by longitudinally spaced cleats 5, Fig. 3, of heat insulating material e.g. wood bolted at 6, 7 to the hull and at 8, 9 to a flange 10 of a pair of nested inner and outer angle plates 3a, 3b to which are secured the primary and secondary barriers 17, 15. Stiffening members 13 secured by brackets 14 to either side of each cleat 5 extend between the hull 1 and the plate 3b. The gap between successive angle plates 3b is covered by an angle piece 20 of the same material as the secondary barrier 16 whilst the gap between successive plates 3a is covered by pieces 25 of the primary barrier 17. Each corner (53 1 ), Fig. 9 (not shown), formed by the intersection of three walls of the tank is also connected to the adjacent corner (53) of the hull by three spaced cleats (56a, 56b, 56c) straddling the three dihedral angles and bolted to a trihedral angular element (54) formed of nested inner and outer corner plates (54a, 54b).