Abstract:
A method of coating an interior of a gas storage container, where the method includes supplying a chemical vapor precursor to the storage container, and forming a metal coating on the interior surface of the container, where the coating is formed from the chemical vapor precursor. Also, a gas storage container that includes a gas storage vessel with an interior surface that has a liner formed on the interior surface of the storage vessel. The liner may include tungsten metal with a purity of about 99%, by weight, or more. Additionally, a system for making a metal lined gas storage container that may include a chemical vapor precursor generator, and a precursor injection assembly for transporting the precursor into a gas storage vessel. The system may also include an exhaust outlet for removing gaseous deposition products from the gas storage vessel.
Abstract:
The present invention provides a compressed gas cylinder that is capable of storing a compressed fluid at high pressures. The cylinder of the present invention includes a body terminating in an inwardly domed cap. The dome included in the cap of the compressed gas cylinder of the present invention is formed such that the material near the tip of the dome is relatively thinner than the material near the base of the dome. The tip of the dome, therefore, creates a pierce region in the cap that can be pierced through the application of a relatively low pressure.
Abstract:
A liquefiable gas pressure cylinder (10) and method for making the same with the cylinder including a cylindrical shell (100) and heads (200) fusion welded at opposites ends of the shell. The side ends where the heads (200) are joined to the shell are crimped radially inward to each end to form chimes (150). The welds are 100 % radiographed and heat treated. The heads (150) are dished to have a domed center portion (210) which has a profile and thickness so that the domed center portions (210) will reverse before any other part of the cylinder is stressed beyond a yield limit for such part.
Abstract:
A fluid storage and dispensing system (10) comprising a vessel (12) for holding a fluid (17) at a desired pressure. The vessel has a pressure regulator (26) set at a predetermined pressure. The regulator may be interiorly or exteriorly positioned, single-staged or multi-staged, and is associated with a port of the vessel. A dispensing assembly, e.g., including a flow control means such as a valve (20), is arranged in gas/vapor flow communication with the regulator (26), whereby the opening of the valve effects dispensing of gas/vapor from the vessel (12). The fluid in the vessel may be constituted by a liquid that is confined in the vessel at a pressure in excess of its liquefaction pressure at prevailing temperature conditions, e.g., ambient (room) temperature.
Abstract:
Disclosed herein are a system and method which can control the generation rate of boil-off gas from liquefied hydrogen and can maintain the liquefied hydrogen storage tank at a low pressure. The method for controlling boil-off gas from liquefied hydrogen according to the present invention includes: at least two storage tanks storing liquefied hydrogen and each operated in a high-temperature mode or in a low-temperature mode, wherein the low-temperature mode includes: maintaining at least a portion of liquefied hydrogen stored in the storage tank at a first temperature being a densification temperature, and the high-temperature mode includes: maintaining at least a portion of liquefied hydrogen stored in the storage tank at a second temperature being a temperature exceeding a triple point of liquefied hydrogen through recovery of cold heat from liquefied hydrogen stored in the storage tank.
Abstract:
A gas container includes: a tubular container body having an internal space for storing gas; a connector attached to an end portion of the container body in a shaft direction and having a communication passage for allowing the internal space to communicate with an outside of the container body; and a storage member disposed in the internal space to absorb and release gas. The storage member has one of a recess portion and a projection portion which are provided on a radial outer surface thereof and engage with each other. The container body has the other of the recess portion and the projection portion which are provided on a radial inner surface thereof.
Abstract:
A supply source for delivery of a CO-containing dopant gas composition is provided. The composition includes a controlled amount of a diluent gas mixture such as xenon and hydrogen, which are each provided at controlled volumetric ratios to ensure optimal carbon ion implantation performance. The composition can be packaged as a dopant gas kit consisting of a CO-containing supply source and a diluent mixture supply source. Alternatively, the composition can be pre-mixed and introduced from a single source that can be actuated in response to a sub-atmospheric condition achieved along the discharge flow path to allow a controlled flow of the dopant mixture from the interior volume of the device into an ion source apparatus.
Abstract:
A corrosion resistant gas cylinder includes an electroless nickel-boron layer overlying the inner surface of a steel alloy cylinder. The nickel-boron layer has a thickness of at least about 20 micrometers and a porosity of no greater than about 0.1%. The electroless nickel-boron layer has a boron content of at least about 1% by weight and a surface roughness of no greater than about 5 micrometers. Prior to introducing liquefied gas into the gas cylinder, a cleaning process is carried out using a two-step baking process to clean the surface of the nickel-boron layer. The nickel-boron layer substantially reduces the contamination of liquefied corrosive gases stored in the gas cylinder by metal from the steel wall surface underlying the nickel-boron layer. Metal contamination levels of less than about 55 ppb of iron, 10 ppb of chromium, and 5 ppb of nickel by weight can be maintained in liquefied corrosive gases stored for an extended period of time in the electroless nickel-boron plated gas cylinder.
Abstract:
The invention relates to a high-pressure container comprising a thin-walled, cylindrical metal liner (1) having bases (8) on the end sections and an outer stable jacket (2) that surrounds the liner (1). At least one of the bases (8) of the liner (1) has a slight convex curvature towards the interior of the liner (1). A pressure converter (4) is situated between the outer surface of the convex base (8) and the inner surface of a base part of the stable jacket (2), said converter being constructed from a rigid profiled base on the side facing the base part of the rigid jacket (2) and a deformable cushion (6) of viscoelastic material on the side facing the convex base (8).
Abstract:
An LNG supply system may include first and second LNG tanks, a connecting line connecting the first LNG tank with the second LNG tank and in which a time relay valve is disposed, a charging line one side of which is connected to a fuel supply portion and the other side of which is connected to the first LNG tank for charging fuel, a vent line, one side of which is connected to the second LNG tank and the other side of which is open, a direct line connecting the first LNG tank and the second LNG tank, and a supply line branched from one side of the connecting line to supply an engine with LNG, wherein the time relay valve is opened for a predetermined period so as to equalize the amount of LNG that is charged in the first LNG tank and the second LNG tank.