Abstract:
840,952. Liquefied gas storage containers. CHICAGO BRIDGE & IRON CO. Nov. 24, 1958 [Sept. 22, 1958], No. 37684/58. Class 8(2). Prevention of displacement of particulate heat insulating material 25, Fig. 2, e.g. silica gel, granulated cork, shredded foamed polystyrene, fibre glass located between inner and outer walls 21, 22 of a liquefied gas container subjected to thermal expansion and contraction is effected by means of a resilient blanket 24 between the walls and forming a layer completely surrounding said inner wall 21. As shown an upper hemispherical layer of resin bonded fibre glass sheaths the upper portion of the inner spherical vessel whilst a lower hemispherical layer lines the outer vessel. The latter is supported by column 26 and supports the inner vessel by rods 23. In a modification the resilient layer comprises a plurality of coil springs 33, Fig. 3, extending between the inner vessel 30 and a thin membrane 32 between which and the outer vessel 31 is located granular material 34. The springs may be of undulating strip form. In a further modification the resilient layer comprises a plurality of inflatable cells and in a still further modification a fluid impermeable membrane 32, Fig. 6, is resiliently held against granular material 34 by means of sub-atmospheric pressure maintained between the voids thereof.
Abstract:
915,413. Storing liquefied gases. CHICAGO BRIDGE & IRON CO. July 19, 1961 [Dec. 23, 1960]. No. 26076/61. Class 8(2). A vapour relief duct 26 of a heat insulated liquefied gas e.g. butane container 10 is surrounded by a condenser 20 down which passes liquefied gas having been withdrawn from the container by a pump 17 and sub-cooled in an exchanger 14 itself cooled by external refrigeration system 11-13. Any uncondensed low boiling impurities are discharged to atmosphere through a purge line 32, Fig. 2 (not shown).
Abstract:
938,520. Storing liquefied gases. CONTINENTAL OIL CO. March 7, 1962 [March 20, 1961], No. 8818/62. Class 8(2). [Also in Group XXIX] A reservoir for low temperature liquid gas comprises a container 21 suspended within a depression 17 in the ground above its bottom press means 16 which extend between supports 11 secured on at least two sides of the depression. The container 21 is attached to the crossextending I beams 16 by cables or rods with spring hangers 20 which may be omitted at positions near the centre of the tank which are not greatly affected by expansion. The depression 17 is lined with asphalt, plastic or other impervious material and the space 22 between it and the container 21 is filled with insulating material, loose or in bags. A cover 24 of sheet metal, plastic or other material extends over the beams 16 and its edges dip into a peripheral trough 13 which forms a water-seal. The gas mentioned is meltrane.
Abstract:
947,059. Carrying liquefied gases. W. J. GEBIEN. April 25, 1960 [April 30, 1959], No. 14432/60. Heading B7A. [Also in Division F4] A liquid methane storage receptacle 88 operating at substantially atmospheric pressure and constructed of balsa wood 92 lined with redwood 90 is buoyantly supported within a steel tank 86 charged with liquid, e.g. crankcase oil, crude petroleum, palm oil and the like from a reservoir and standpipe unit 96. The oil serves to seep into cracks developing in the receptacle walls and congeal therein, /thus forming a seal against the escape of liquefied gas. In a modification the ship's hull may serve as the oil storage tank and the gas storage receptacle 88a, Fig. 9 (not shown), may be rigidly supported by positioners 106, 108, 110 and 112.