Abstract:
A pressure container made of aluminum, for example, is disclosed and includes a generally cylindrical body and a self-standing integral bottom which has a downwardly extending peripheral skirt portion. The bottom of the container has an inside radius of about R1 and an exterior configuration which, in vertical crosssection along a diameter line includes: I. A DISC-LIKE, CIRCULAR CENTRAL PORTION; II. A CONCENTRIC UPWARDLY CURVED PORTION WHICH IS CONTIGUOUS WITH THE CENTRAL PORTION AND HAS A RADIUS OF ABOUT 0.22 R1; iii. a concentric downwardly curved portion contiguous with the skirt portion and having a radius of about 0.19 R1; and IV. A GENERALLY FLAT CONCENTRIC PORTION CONTIGUOUS WITH AND BETWEEN THE CURVED PORTIONS. The thinnest portion of the bottom is in the upwardly curved portion and is not less than about 1.5, preferably 2 times the wall thickness of the cylindrical body.
Abstract:
In a method of positioning hoops of steel wire or strip for the application of circular prestress to pressure vessels provided at uniform intervals with peripheral support saddles, a winding core is placed between the saddles and the prestressing hoops and is displaced in rotational motion so as to wind the hoops. The device for carrying out the method comprises radial rollers and adjacent axial rollers so arranged as to form a roller track corresponding to the internal diameter of the winding core, at least one pressure roller for displacing the core and the hoop and at least one stationary drum for feeding steel strip.
Abstract:
A ship for the transporation of volatile liquids having holds which contain a number of elongated vessels for containing cargo fluids where each vessel has a primary barrier for isolating cargo fluids from the hull and has an insulating wall. The insulated cargo vessels prevent the absorption of heat by cargo fluids at cryogenic temperatures which could cause excessive loss of cargo by evaporation and prevent a thermal equilibrium temperature of cargo fluids at cryogenic temperatures from affecting the hull of the ship, e.g., by preventing embrittlement of the hull. A convection barrier connects at least each pair of adjacent vessels positioned opposite the surfaces of the hold to decrease thermal conductivity between cargo fluids in the vessels and the hull structure of the ship.
Abstract:
A device is provided for containing liquefied gases at cryogenic temperatures in a tanker vessel. The container device includes a primary tank for containing the liquefied gas and a drip pan formed as an integral part of and below the primary tank for collecting and retaining quantities of the liquefied gas that may leak through the primary tank and for providing support for the primary tank. A spray shield acting as a liquid tight barrier is spaced apart from and structurally supported by the primary tank. The drip pan includes a plurality of apertures in fluid communication with the space between the primary tank and the spray shield for enabling the passage of seepage from upper portions of the primary tank through the space and into the drip pan.
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:
A vise or clamp for rigidly supporting and holding tanks, such as containers for compressed and liquefied gases such as refrigerant gases, fuel gases, and the like, while their valve assemblies are removed and installed. The vise is of simple sturdy construction permitting easy placement and removal of the gas container. At the same time, the gas container is held securely against rotation to permit relative rotation of the valve assembly. The vise is made in a variety of sizes to accommodate gas containers of different sizes. The vise may be used either horizontally or vertically.
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:
A below ground chamber for the storage of liquid gas at cryogenic temperatures and a method for constructing the same. An outer shell is formed and an inner shell is spaced interior of the outer shell so formed. The space between the two chambers is frozen under a controlled pressure for providing an internal stress in the frozen space. The unfrozen earth central of the frozen space is excavated to form the storage chamber and a roof is constructed over the chamber.
Abstract:
A disposable compressed gas container having a cylindrical body with an annular collar projecting above the top and an annular skirt depending from the bottom. The collar and skirt are so dimensioned that the collar of one container nests in complementary disposition with respect to the skirt of a second container longitudinally stacked therewith. Latching means are provided to interlock the nested collar and skirt together, and plurality of axially stacked pair of coupled containers are adapted to be strapped about the girth of the waists defined by the nested collars and skirts.