摘要:
A canister includes a substantially cylindrical body having (i) a sidewall shell; (ii) a transition region; (iii) a dome portion extending from a convex annular portion to define at least a partially closed dome at one end of the body cylinder; (iv) and an opposing, open end of the cylindrical body; and a curved bottom member recessed within and sealed at a periphery thereof to the sidewall shell at the open end of the cylindrical body. An annular, exterior surface portion of the bottom member bears on an annular, exterior surface portion of the transition region thereby forming a space between and within the annular exterior surface portion of the bottom member and an exterior surface of the dome portion when the canister is stacked on a substantially identical canister.
摘要:
An internally pressurized fluid vessel, in particular for liquids and/or gases exerting pressure outwards from the container has a sandwich structure capable of withstanding the internal pressure. The vessel has an interior container, an outer jacket in which the container is positioned and a material filling the space between the container and the outer jacket.
摘要:
A pressure vessel liner for fuel tanks used to store high pressure gasses including methane or compressed natural gas includes thermoplastic materials exhibiting low permeability and mechanical properties resistant to thermal and pressurization strains over the operating cycle of the fuel tanks. The pressure vessel liner is made from a material selected from the group consisting of modified nylon 6 or nylon 11. The present invention also discloses a method of forming a reinforced composite fuel tank wherein the pressure vessel liner is overwrapped with both low-angle helical and high-angle helical filament windings. The high-angle helical windings are overwrapped around the liner across at least the cylinder-to-dome transition region at angles between 60.degree. and 88.degree. with respect to the longitudinal axis of the liner. High angle helical filament windings at these angles eliminate excessive composite windings typically added to account for weak transition points in these regions. The high-angle helical windings can be effectively wound without slippage, thereby providing a simplified overwrapping process and improved reinforced liner construction.
摘要:
The vessel structures disclosed herein are adapted for containing a mobile or highly permeating fluid such as helium gas or liquid hydrogen or oxygen. Escape of the fluid is inhibited by a barrier layer of an oriented lyotropic liquid crystal polymer film. Preferred polymers include polybenzazole (PBZ) polymers.
摘要:
A fluid containment apparatus including a fluid tank, a well wall and a closure system. The tank has a tank shell, which defines at least in part a fluid containment compartment and has a tank shell opening therethrough. The well wall is secured to the tank shell, positioned at the shell opening, recessed into the fluid containment compartment and defines at least in part a recessed well. The well wall has a well wall end and a well wall end opening. The closure system selectively opens and closes the well wall end opening. The closure system includes a well head connected to the well wall generally at the well wall end, a sealing gasket, an elliptical manway cover having a plurality of drilled and tapped blind holes, a separate fastening ring having a plurality of circumferential drilled through-holes and a clamp for clamping the manway cover and the fastening ring together and sandwiching the sealing gasket on the well head. The clamp includes a plurality of bolts boltable through the through-holes and into the blind holes.
摘要:
This invention relates to a process for applying an anti-corrosive coating upon metallic objects.A paint containing more than 90% by weight of pulverulent zinc in relation to the dry extract is applied to the previously shot cleaned surface of the metallic object. After drying and hardening of this paint, one applies thereon, by electrostatic means, a powdered resin capable of adhering to the zinc upon polymerization and thereafter polymerization of said resin is brought about.
摘要:
Heat barrier components and improved thermal insulation techniques are provided for an external tank insulation system of ships carrying liquefied natural gas, propane, ammonia, etc. Reduction of liquid boil-off rate or initial cost of insulation through the reduction of radiant heat leak is accomplished by a composite insulation system including a high reflectance component material on the external surface of insulation and/or interior surface of the ship facing the tank. Further, refrigeration in tank boil-off is used to cool a radiation shield located between the tank insulation and surrounding enclosure, and to cool the skirt support.
摘要:
A container having a double wall construction of a structural plastic material is provided with improved thermal insulative properties by (1) metallizing at least one surface of each wall of the container with metal such as silver to provide a light reflective surface and to produce a partial barrier to atmospheric gases, (2) coating the metallized surface with a barrier plastic such as saran, (3) evacuating the space enclosed by the walls of the container, and (4) adding to the evacuated space a gas-absorbing material.
摘要:
A tanker vessel intended especially for the transport of liquid cargoes at temperatures differing from ambient temperature having external insulation covering the midbody of the vessel. The insulation is secured to the vessel midbody by means of a grid of intersecting frames or firring members attached to the vessel hull with the insulating material being fitted, foamed or sprayed in the lattice spaces defined by the intersecting members. An outer covering or skin may be disposed over the insulation to provide a watertight and abrasion resistant skin that will prevent damage to or deterioration of the external insulation.
摘要:
A prestressed concrete storage reservoir is provided for holding liquified gases. To increase the quantity of ambient gas stored in the reservoir and to permit a warmer than normal liquification temperature, the gas is stored under a substantial pressure. The structure is characterized by a prestressed sidewall system with the roof and floor systems tied together by a plurality of vertically prestressed columns, these combined systems being substantially independent of the sidewall whereby the combined systems may move substantially structurally free of the sidewall.