Abstract:
A container system for pressurized fluids that includes a plurality of generally ellipsoidal chambers (C) connected by a tubular core (T). The tubular core (T) is formed with a plurality of apertures (A) each of which is positioned within one of the chambers (C). The apertures (A) are of comparatively small size so as to be able to control the rate of evacuation of pressurized fluid should a chamber (C) be ruptured.
Abstract:
A gas storage container may be filled with gas under pressure by feeding cryogenic fluid comprising liquefied gas into the container through a first conduit arrangement in a nozzle inserted into a passageway through a fluid flow control unit mounted in an opening in said container; closing the container to the passage of gas into or out of said container; and allowing said cryogenic fluid to become gaseous within the closed container. The invention involves venting displaced air and/or gaseous cryogenic fluid from said container during the feeding step through a second conduit arrangement in the nozzle. In embodiments in which displaced air and/or gaseous cryogenic fluid flows through the second conduit arrangement around a length of the first conduit arrangement, heat transfer from the fluid flow control unit to said cryogenic fluid is suppressed thereby reducing the level of evaporation of the cryogenic fluid in the nozzle during fill.
Abstract:
The invention can be used for storing liquefied gas for the fuel and energy industry. The inventive device comprises a tank (1) arranged on supports and placed in a bank (17), a pipe for a vapour phase (13), a pipe (16) for extracting liquefied gas which is connected to the bottom part of the tank (1), a pipe (14) for loading liquefied gas, a drain pipe (15), a shielding pipe (10) and a supporting wall (18) adjacent to the bank (17). The shielding pipe (10) is connected to the external surface of the tank (1). The vapour phase pipe (13), the pipe for loading liquefied gas (14) and the drain pipe (15) are arranged in the cavity of the shielding pipe (10) and fixed on to the tank (1) one side thereof and to the end flange (10') of the shielding pipe (10) on the other side. The ends of the vapour phase pipe (13), liquefied gas loading pipe (14) and of the drain pipe (13) arranged inside the tank (1) are embodied such that they are curved. The supporting wall (18) is provided with two through holes. The shielding pipe (10) is arranged in one hole and the pipe (6) for extracting liquefied gas passes through the second hole. Said device can be embodied in the form of several tanks and provided with recirculation pipes (23). The aim of the invention is to develop a compact and safe gas storage device.
Abstract:
A method and apparatus are set forth for transferring a cryogenic fluid. A polymeric, coaxial transfer line is utilized where a first portion of the cryogenic fluid flows through the inner tube while a second portion flows through an annulus between the inner tube and outer tube which annulus is at a lower pressure than the inside tube. In one embodiment, the inner tube is substantially non-porous and the transfer line is preceded by a flow control means to distribute at least part of the first and second portions of the cryogenic fluid to the inner tube and annulus respectively. In a second embodiment, the inner tube is porous with respect to both gas permeation and liquid permeation such that both a gaseous part and a liquid part of the first portion permeates into the annulus to form at least a part of the second portion.
Abstract:
A gas storage container, such as a gas cylinder, is filled with a gas mixture comprising a first gas and a second gas under pressure by feeding a liquid/solid mixture comprising liquefied first gas and solidified second gas into the gas storage container; closing the gas storage container to the passage of gas into or out from the container; and allowing said liquefied first gas and said solidified second gas to become gaseous within said closed gas storage container. Such a process is easier and more energy efficient as compared to direct compression processes, and is safer and results in less wastage as compared to direct liquid injection processes.
Abstract:
A siphon for delivery of a liquid cryogen from a container such as a Dewar flask. The siphon ensures delivery of a liquid cryogen with a lower proportion of the gaseous fraction. The siphon comprises a central feeding conduit, which is largely contained within the Dewar flask. There is an auxiliary conduit surrounding the central feeding conduit; the outer upper section of this auxiliary conduit is provided with an adjustable valve intended to release a gaseous fraction of the cryogen contained in the annular gap between the auxiliary and central feeding conduits. The upper section of the central feeding conduit is provided with an external layer of a porous capillary coating or with a wick; this ensures that the upper section of the central feeding conduit is continuously wetted with the liquid cryogen. This porous capillary coating prevents gasification of the liquid cryogen in the central feeding conduit. Alternatively, the problem of liquid cryogen gasification may be solved through thermal insulation of the central feeding conduit.
Abstract:
A portable liquid oxygen (PLOX) unit (30) and method of filling. The LOX unit includes a LOX container (32). An inlet line (40) communicates LOX from a LOX supply to an the LOX container, and an outlet line (54) communicates LOX from the LOX container ultimately for consumption by a user. A vent line (102) communicates the interior of the LOX container to ambient atmosphere. A vent valve is coupled to the vent line to selectively communicate the LOX container to the ambient atmosphere. An auto shutoff assembly (110) is associated with vent line to substantially block the vent line when the LOX in the LOX container reaches a predetermined level. A reset element associated with the auto shutoff assembly causes at least a portion of the auto shutoff assembly to unblock the vent line for subsequent filling.
Abstract:
A non-conducting, plastics cryogenic fluid transfer conduit means (10) is described which is suitable for transferring the cryogenic fluid (12) from a standard reservoir (14) into a suitable enclosure (16) within an electronics cabinet, such as a mini-computer, to cryogenically cool electronic components. The conduit subsequently transports the ''warmed'' cryogenic fluid, which picked up heat by cooling the electronic components, to the region of the reservoir (14) where most or all of this ''warmed'' cryogenic fluid is vented either to the external environment, or back to the reservoir where it is subsequently cooled by a cryogenic refrigeration unit (60) for re-use. A thermally insulating and moisture preventing outer covering (38, 48) allows the transition of the temperature from the cryogenic level to room temperature level to occur almost completely within the outer covering and, thereby, prevents the moisture condensation problems incurred if the surface temperature of the cryogenic conduit drops below the dew point of the operating environment.