Abstract:
A pressure vessel having a housing forming a chamber of a polygonal cross-section, the sides of the housing being formed by at least one panel, the panel forming one side being connected to the panels forming an adjacent side by a connector assembly that permits the connected panels at the juncture of the connector assembly to pivot or move relative to one another in the substantial absence of any bending stress at such juncture, and a seal being used to form fluid-tight seals between adjacent sides.
Abstract:
A pressure vessel insert comprises a plate having an outboard surface and an inboard surface interconnected by outer edge surfaces, and defining an aperture extending therethrough from the outboard surface to the inboard surface. The plate is provided with a modulus of elasticity within about 30% of a first modulus of elasticity of inboard and outboard skins of a wall portion of the pressure vessel shell around an opening in which the insert is disposed, in directions through the thickness of the skins.
Abstract:
A fuel delivery system includes a fuel tank configured to receive liquid natural gas. A first conduit extends from a vapor holding portion of the fuel tank to an economizer valve. A second conduit extends from a liquid holding portion of the fuel tank to the economizer valve. Fluid coupled to the economizer valve is a vaporizer which is heated by coolant from the engine and is positioned below the fuel tank. The economizer valve selectively withdraws either liquid natural gas or vaporized natural gas from the fuel tank depending on the pressure within the vapor holding portion of the fuel tank. A delivery conduit extends from the vaporizer to the engine. A return conduit having a check valve formed therein extends from the delivery conduit to the vapor holding portion of the fuel tank for pressurizing the fuel tank.
Abstract:
In a high-calorie gas appliance (1) which is set with a replaceable fuel gas cassette (9) containing therein liquefied gas and has a burner (7) for burning vaporized fuel gas from the cassette, a heat transfer plate (15) is mounted on the gas appliance with its one end portion disposed near the burner (7) and its the other end portion in contact with the fuel gas cassette (9) so that a part of heat of combustion at the burner (7) is transferred to the fuel gas cassette (9) to heat the same. Further, a heat accumulator member (2) is disposed in contact with the heat transfer plate (15) in the position of contact of the heat transfer plate with the cassette (9). Thus temperature drop of the liquefied gas due to vaporization latent heat in response to gas supply from the cassette is suppressed, thereby ensuring stable gas supply even if the amount of gas in the cassette upon initiation burning is reduced and ensuring exhaustion of the cassette upon quenching.
Abstract:
The controls for controlling the supply of natural gas fuel for a vehicle are integrated together in a module which is located at the gas tank. Such controls include a high pressure regulator for lowering the pressure of the gas flowing from the tank and an electronically controlled solenoid valve which shuts off the gas flow when no fuel is required by the engine and when the gas pressure in the tank falls below a predetermined value. Also included in the module are a pressure sensor for providing signals for controlling the shutoff valve; a check valve which permits one way flow of gas into the gas tank when it is filled; a pressure relief mechanism responsive to the temperature and pressure sensors for allowing safe release of the gas to the outside should the temperature rise above a predetermined limit. The solenoid valve, as indicated above, responds to the sensors and additionally functions as an excess flow shut off valve to cut off gas flow from the tank should the gas line rupture or the module is sheared off.
Abstract:
An onsite petrochemical storage and transport system comprising a land based facility, which provides storage at a well site for hydrocarbon reservoir products which include gas, oil and water at a high pressure. The pressurized mixture is transferred, by means of pressure equalization, into a truck with multiple pressure containing vessels and transported to a plant suitable for processing the raw hydrocarbon mixture. The well site facility and transport truck are configured to allow for separation of gas and liquids to selectively transfer the gas or liquids as desired. Remote well sites may be periodically serviced by transport trucks while maintaining continuous production.
Abstract:
A lined composite pressure vessel is adapted for mounting in upright position on a flat surface or the like in which a filament wound pressure vessel has a polar closed end and is formed with a liner. An end boss extends through the closed end with an annular skirt positioned adjacent to an outside surface of the liner in which the skirt is encapsulated by the filament windings of the pressure vessel. The end boss has a generally axial portion extending from the skirt forming an outwardly opening annular recess, the recess having an outer knurled surface, and receives therein winding filaments of the pressure vessel body so that the end boss is encapsulated in place. A face portion of the end boss is provided with a means by which a support platform may be mounted on the end boss for supporting the torsional and bending stresses are distributed by the end boss over a substantial area of the pressure vessel.
Abstract:
A protective container for a scuba tank. The container is made of rugged, flexible material, such as plastic or rubber. The container has an open top for placing the container over the tank, a cylindrical body for protecting the side of the tank, and a base for protecting the bottom of the tank. The upper portion of the container is tapered gently inwardly and upwardly to decrease resistance to the water. The inner surface of the container has longitudinal ribs for draining water from the top to the bottom of the container. The outer surface of the container has five longitudinal outriggers to prevent rolling of the tank when it is lying on a surface and providing the least amount of resistance to the water when the tank is in use. The container wall is extended below the base to supply protection against vertical stress when the tank is dropped. The inner surface of the base contains radial drainage channels to dispose of water inside the container. The outer surface of the base contains strengthening ribs. A central opening in the base serves as an outlet channel for water inside the container and as an inlet for an air valve which allows the easy removal of the container from the tank.
Abstract:
Underground storage tank consisting of an internal metal structure (1), a static external facing (2) in contact with the surrounding soil (3) and a filler (5) located between the metal structure (1) and the static facing (2), the filler (5) being stabilized by a netting (6) secured onto the metal structure (1) by joint plates (7), while the netting is embedded in the filler (5) which is thickened by charging vessels (18) combined with feed bushes (15) through which the filler (5) is poured into the cavity wall. For Liquid Gas Low Temperature Storage Tanks, the transverse channels (4) for detection and drainage of any leaks are consisting of two omega shaped sections (21, 22) whereas blown or non-blown bitumen to which polymers are added is used as a filler (5).
Abstract:
A liquified gas tank overfill protection system for use in a tank having a hermetically sealed chamber. The overfill protection system includes a shroud mounted in the chamber in a spaced relationship to the interior side of the chamber. The shroud divides the chamber into a plurality of spatially normally communicating portions. Preferably, the shroud has a generally elongated concave downward shape.