摘要:
A combustible gas inflator and a method for filling and sealing the inflator are provided. The inflator includes an enclosure configured to receive and store the combustible gas under pressure. The enclosure has an outer wall comprising an exterior surface, an interior surface, and a fill aperture extending therethrough. The fill aperture has a first aperture portion and a second aperture portion. The first aperture portion is proximate the exterior surface and the second aperture portion is proximate the interior surface, wherein the first aperture portion is larger than the second aperture portion. The inflator further includes a sealing member configured to seal the fill aperture. The sealing member has a first portion and a second portion. The first portion is configured to sealingly engage a portion of the second aperture portion and the second portion is configured to sealingly engage a portion of the first aperture portion. The first portion seals the combustible gas within the enclosure and the second portion is configured to be welded to the enclosure by a welding process that would ignite the combustible gas if the combustible gas were exposed to the welding process.
摘要:
A process is set forth for purifying and liquefying a feed gas mixture with respect to its less strongly adsorbed component of lower volatility which integrates temperature swing adsorption (TSA), pressure swing adsorption (PSA) and cryogenic distillation to optimize overall performance. The TSA portion of the process is used to remove the strongly adsorbed component from the feed; the PSA portion of the process is used to remove the moderately strongly adsorbed component from the feed; and the cryogenic distillation portion of the process is used to remove the less strongly adsorbed component of higher volatility from the feed while also providing for the liquefaction of the product. A key to the present invention is the use of the PSA and distillation waste streams in the regeneration of the TSA and PSA adsorbents. An important application of the present invention is the purification and liquefaction of a natural gas feed stream with respect to its methane/C.sub.2 hydrocarbon component.
摘要:
A method is provided for filling an enclosure with an ignitable mixture of gases. The enclosure has an outer wall comprising an exterior surface, an interior surface, and a fill aperture extending therethrough. The method comprises delivering a predetermined amount of pressurized combustible gas into the enclosure through the fill aperture, delivering a first predetermined amount of pressurized inert gas into the enclosure through the fill aperture at a first pressurization rate, delivering a second predetermined amount of pressurized inert gas into the enclosure through the fill aperture at a second pressurization rate, welding a sealing member to the outer wall of the enclosure by a welding process to form a weld operable to seal the fill aperture and to permit the enclosure to store pressurized gas therein. The first pressurization rate allows the first predetermined amount of pressurized inert gas to mix with the predetermined amount of pressurized combustible gas to form an ignitable mixture. The second pressurization rate is lower than the first pressurization rate. The second pressurization rate allows stratification to form within the enclosure between a layer of the ignitable mixture and a layer of the second predetermined amount of pressurized inert gas. The layer of the second predetermined amount of pressurized inert gas is disposed between the layer of the ignitable mixture and the fill aperture.
摘要:
a communication system comprises a plurality of downstream transmission systems configured to transmit downstream wireless communications to an area having a plurality of sectors over a plurality of downstream channels to a plurality of users in the plurality of sectors and a plurality of upstream receiver systems configured to receive upstream wireless communications over a plurality of upstream channels from the plurality of users in the plurality sectors. In an embodiment, the plurality of upstream channels comprise multiple contention channels associated with each of the plurality of sectors and a plurality of bearer channels associated with each of the plurality of sectors and the plurality of upstream receiver systems are further configured to receive a plurality of requests from the plurality of users over the multiple contention channels for access to the plurality of bearer channels.
摘要:
A cover lift system for a spa includes a lifter handle having an upper arm and a lower arm telescopically connected to the upper arm, the upper arm being configured for operative connection to a cover of a spa, and the lower arm being configured for pivotal connection to a base of the spa, and an adjuster mechanism associated with the lifter handle for selectively adjusting a length of the lifter handle to allow for use of the lifter handle with spas of varying sizes.
摘要:
An inflator bottle adapted for controlled release of product gas to deploy an inflatable cushion and a method thereof is provided. The inflator bottle comprises a compartment filled with a combustible gas mixture having a partition that divides the compartment into a first region and a second region. Upon a crash event, an igniter on the inflator bottle ignites initiating combustion in the first region. Combustion propagates in the first region toward a nozzle building pressure in the first region sufficient to rupture a burst disk over the passage of the nozzle releasing product gas through the nozzle. The release of product gas through the nozzle draws combustible gas mixture from the second region flowing through the gas portal on the partition into the first region for combustion. The area of the gas portal between the regions is sized in relation to the size of the minimum area of the passage of the nozzle to supply the combustible gas mixture to the first region at a rate that maintains the flame front while preventing it from propagating out into the second region or out the nozzle until the remaining combustible gas mixture in the compartment is consumed.
摘要:
A wear-resistant Ni\Cu alloy and methods of preparing same are disclosed. The alloy comprises a ductile, continuous phase of Ni\Cu with a discontinuous phase of hardened Ti containing particles distributed throughout the continuous phase. The particles are Ti\Al intermetallic or complex TixAlyNiz complex or particle. The alloying components are poured and mixed in the melt under an inert atmosphere, then slowly cooled to provide the desired cast article. The alloy should be protected during melting and cooling in a protective atmosphere, such as a vacuum, or an inert atmosphere so as to inhibit oxide and nitride formation that would otherwise adversely affect desirable alloy properties.
摘要:
A propulsion system to provide silent firing of a mortar weapon using standard and nonstandard mortar tubes or launch assemblies has been invented. The system utilizes a precision rupture disc mechanism to control combustion and energy release to effect consistent operation. The gases generatedd by combustion of the propellant charge are contained by the rupture disc which insures uniform and efficient propellant combustion. After rupture of the disc at a prescribed pressure, the projectile is accelerated by the expanding gases through the action of a piston on the warhead. The gases are retained within the projectile after accelerating the projectile, preventing release of high pressure gas and resulting in a silent launch condition.In a first embodiment the warhead and piston moves first and then the heavier cylinder is moved. In a second embodiment the cylinder moves with the warhead and picks up the lighter piston. This takes less force than the first embodiment, permitting a lighter charge to achieve the same flight range for the warhead.Another improvement permits the same amount of explosive for charge 0 and charge 1 ranges. This is done by varying the size of the free volume between the piston head and the top of the cylinder which drives the warhead in flight.
摘要:
A communication system comprised of an upstream receiver system and a downstream transmission system in communication with a user. The downstream transmission system is configured to transmit downstream wireless communications to the user over a plurality of downstream channels. The upstream receiver system is configured to receive upstream wireless communications from the user over a plurality of upstream channels. The plurality of upstream channels includes more than one contention channel and a plurality of bearer channels. The upstream receiver system is configured to receive requests from the user, over the multiple contention channels, for access to the plurality of bearer channels for the upstream wireless communications.
摘要:
An air bag inflator providing a source of gas, releasable upon command, to inflate a supplemental inflation restraint (SIR) system commonly known as an automobile air bag. Provided is a pressure vessel containing one or more separate chambers for the purpose of storing gaseous fuel(s) and gaseous oxidizer(s) or liquid fuel(s) and liquid oxidizer(s) under pressure with helium as the primary filler gas. The primary function of the helium gas is to serve as a kinetic damper to modulate and control the reaction rate of the fuel(s) and oxidizer(s). Because of its low mass, high thermal conductivity and high heat capacity for its mass, helium is an excellent filler gas. In the case of the gaseous fuel(s) and oxidizer(s) a single chamber is provided. In the case of liquid fuel(s) and oxidizer(s), two or more separate housings are provided for storing the liquid fuel(s) and oxidizer(s). Along with the liquid fuel(s) and oxidizer(s) housings, two separate chambers containing pressurized helium are provided within the pressure vessel. The first helium chamber rapidly pressurizes upon initiation of a gas producing pyrotechnic igniter. This pressure acts on thin membranes on the first chamber side of the separate liquid storage housings to force the liquid fuel(s) and oxidizer(s) into the second chamber where the materials are atomized and mixed. The mixture is ignited by the arrival of hot gases from the igniter directed into the second chamber via the small diameter tube or orifice. The fuel(s) oxidizer(s) mixture burns to produce gaseous reaction products that are released into the air bag by bursting a controlled rupture burst disc.