Abstract:
A tanker ship construction equipped with low temperature liquefied gas tanks having membranous vessels for containing low temperature liquefied gases. The tank is mounted within a hold space prepared in the ship hull. The tank includes an outer box of a steel structure and a heat insulating layer. The outer box has side walls and a bottom adapted to be just strong enough to hold the whole shape thereof for the convenience of the construction and assembly, but not strong enough to support the inner pressure applied by the low temperature liquefied gases loaded in the membranous vessel. The box also has a roof adapted to form by itself a roof portion of the hull, whereby the construction of the tank as well as the assembling thereof into the hull is made substantially easier and the period of construction of the tanker ships is substantially shortened.
Abstract:
A portable terminal for liquefied natural gas in which a cryogenic storage tank for liquefied natural gas is mounted on a compartmented concrete base having sufficient buoyancy to float the tank and a gas treating plant is constructed on a deck forming the roof of the storage tank. The gas treating plant may be a plant for liquefying natural gas or a plant for gasification of stored natural gas. A barrier wall extending upwardly from the base near its outer edge is spaced from and surrounds the storage tank to form ballast compartments into which water can be pumped to sink the base of the terminal onto the ocean floor. Means are provided to circulate water through the base to prevent freezing of water below the storage tank.
Abstract:
Liquified natural gas, ethane or propane is stored in a cavity in which the roof is supported on broken rock placed in the lake. Very cheap broken rock containing a large volume of voids,when piled,is provided by building the cavity on a rock formation, breaking the rock formation into small pieces by rippers or giant teeth pulled by giant tractors, sieving the broken rock into fractions with each fraction having rock pieces with a minimum to maximum size ratio of 0.5, and piling the rock fractions without substantial mixing in the cavity. This allows storage cavities to be built at a fraction of the former cost and that also can not be damaged by sabotage and riots like former storage can be.
Abstract:
Liquified gas is stored underground in a large double walled container seated in an opening in the earth''s surface. Between the walls of the liner, thermal insulation is distributed in a continuous layer along the floor and wall of the opening. A diaphragm is supported across the top of the opening with a seal being provided between the diaphragm and the double walled liner to form a container for the liquified gas. Surrounding the lip of the opening is a concrete ring across which a net of cables is stretched to support a thermally insulating ceiling. A cooling system is provided for freezing the earth to aid in the excavation of the opening and this system is subsequently used to maintain the wall and floor of the opening frozen to a controlled thickness by cooling them in response to a rise in the temperature of the surrounding earth above a predetermined temperature level. Also disclosed are various techniques for constructing a storage tank of the type described.
Abstract:
A STRUCTUREAL LIGHT-WEIGHT PANEL OF HIGH STRENGTH, HAVING THERMAL INSULATION PROPERTIES THAT RENDER THE PANEL PARTICULARLY SUITABLE FOR CRYOGENIC AND ELEVATED TEMPERATURE APPLICATIONS. THE PANEL IS CONSTITUTED BY A COMPOSITE CORE BONDED TO A CARRIER MEMBRANE OR LAMINATED TO FACING SKINS, THE CORE INCLUDING AT LEAST ONE LAYER FORMED BY A SERIES OF BALSA BEAMS IN SPACED PARALLEL RELATION, THE SPACING BETWEEN THE BEAMS BEING FILLED WITH SLABS OF FOAM PLASTIC MATERIAL WHOSE K-FACTOR IS SIMILAR TO THAT OF BALSA, WHEREBY THE OVERALL THERMAL INSULATING CHARACTERISTICS OF THE COMPOSITE CORE ARE EFFECTIVELY EQUIVALENT TO THAT OF A HOMOGENEOUS CORE COMPOSED ENTIRELY OF FOAM PLASTIC MATERIAL, WHEREAS THE STRUCTURAL CHARACTERISTICS OF THE COMPOSITE CORE ARE FAR SUPERIOR THERETO.
Abstract:
Surface vessels and submarines for the transportation of large volumes of fluids are constructed of a plurality of cylindrical segments joined along their edges. The cylindrical segments serve both as the wall of the storage tanks in which the fluids transported are contained and the skin of the vessel. Webs joined to the junctures of the cylindrical segments extend across the interior of the vessel and are joined to junctures of cylindrical segments on the opposite side of the vessel.
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:
1,214,055. Carrying liquefied gases. CONCH OCEAN Ltd. 3 Jan., 1969 [21 Feb., 1968], No. 8362/68. Headings B7A, B7M and B7S. [Also in Division F4] In a tanker for carrying liquefied gases, a fluid-tight tank 4 in hold 3 is externally insulated by thermal insulation 7 between the tank and the walls of the hold, the outer parts of the insulation adjacent the walls of the hold being formed with passages through which any water present may pass, the water being able to drain into sumps 11 near the bottom of the hold for removal through pipes 12 by pump 13. In the embodiments described the outer part of the insulation consists of timber fixing strips 6, 6 1 secured to the inner surface of the hold, the fixing strips being slotted as at 6a, 6b, 6c for the passage of the water.