Abstract:
Containers are pressurized by adding a controlled amount of liquid cryogen to uncapped containers as they move along an assembly line to a capping station. The liquid cryogen is added to the containers in a stream from a conduit outlet. The amount of cryogen delivered is controlled by sub-cooling the liquid cryogen as it flows across a flow-control restriction in the conduit, thereby ensuring that flow across the restriction is liquid. Control is also achieved by maintaining the temperature of the cryogen delivered from the outlet low enough to avoid detrimental flashing.
Abstract:
A compact, portable cryogenic system for powering portable gas-driven tools having a container which includes an outer vacuum casing and an inner container with each having small, openings at their top connected together forming an evacuable space between the outer casing and the inner container. Material to inhibit heat transfer through the evacuable space is included in the space between the outer casing and the inner container. The openings of the inner container are closed with gas-tight closures fastened to the outer vacuum casing. The gas-tight closures can carry, through the single openings in the inner container, means to admit cryogenic liquid or withdraw cryogenic liquid from the inner container and means to admit heat to the inner container as may be desired. Warming coils positioned on the outer vacuum casing of the container communicate with the inner container and the flow of gas from the warming coils may be controlled by an adjustable pressure regulator.
Abstract:
A storage device has an inner enclosure (6) and a leakproof and a rigid outer enclosure (5), which are mounted one inside the other and separated by an intermediate space (9) containing a fluid, continuous in phase at pressures other than that of the material stored, and pressure measurement equipment (16, 15) enabling the differences in the pressure of the fluid to be monitored. Advantageously, the device additionally features sampling equipment (18, 17) enabling the composition of the fluid to be monitored. The device may be buried, the outer enclosure being then placed against the cement walls (4) of a cavity, which may be a drilled well. The inner enclosure may feature a leakproof skin which is made rigid by the presence in the intermediate space of a porous and rigid filling material in which the fluid can circulate.
Abstract:
Portable emergency breathing apparatus is disclosed which is comprised of a compressed breathing gas container having a housing mounted on the open end thereof which supports a pressure gauge, a pressure reducing valve assembly, and burst valve, fill valve and needle valve components. The pressure reducing valve controls the flow of breathing gas from the container to a breathing hose attached to the housing and leading to a face mask or hood worn by the user. The housing has a flat axially outer end relative to the container and a radially outer periphery which is within the cylindrical plane of the side wall of the container, and the housing is structured for mounting on the container so as to optimize compactness of the apparatus and protection of the pressure gauge and the pressure reducing, burst, fill and needle valves from damage during storage and use. A modification of the housing enables the apparatus to include two or more compressed breathing gas containers in side-by-side relationship, thus to increase the duration of use of the apparatus. Another modification of the housing enables the apparatus to be supported on the body of a user through waist and/or shoulder straps.
Abstract:
A compressed gas supply system is disclosed which includes a pressure tank for a predetermined compressed gas. An outlet valve is mounted on the pressure tank and includes at least two outlet ports. One outlet port is provided with a size and thread configuration proportioned to meet a first industry standard for connection of equipment using the compressed gas within the tank. The other port has a size and thread configuration different from the one port, and proportioned to meet a second different standard for connection of equipment using the compressed gas. An automatic pressure-regulating valve is provided in one of the ports to reduce the pressure delivered to such port to a maximum pressure less than the maximum pressure allowable in the associated outlet port. The valve reduces the inventory requirements by permitting the use of a single valve and tank combination to connect with distribution systems for the compressed gas having different maximum pressure values.
Abstract:
A plastic body having a cylindrical hole through its center has a handle for hand-carrying the body. The hole is at least partially lined with an elastomer. The elastomer lined hole has a diameter approximately 1/8 to 1/4 inch larger than the cylindrical tank to be carried. After sliding the plastic body over a cylindrical tank, by tilting the body, the elastomer lined body surrounding the hole makes a two-point contact with the tank to be carried, thus allowing the lifting and carrying of the tank. The body has three T-shaped slots, each one of which is designed to mate with an external fixture for storing the tanks.
Abstract:
A cart for transporting pressurized cylinders includes an adjustable body supported above a ground surface by a pair of wheels, and a pair of cylinder retaining bands affixed to the body for holding a pressurized cylinder. The body is vertically oriented and includes a lower tube portion and an upper arm portion partially situated within and slidable with respect to the tube portion. This tube portion includes an open channel defined by two spaced-apart parallel edges extending substantially the length of the tube portion. A shaft is affixed to a lower end of the arm portion and extends perpendicular to the longitudinal axis of the body and outwardly through the channel. The shaft is exteriorly threaded, and engages a nut which can be rotated to frictionally bear upon the tube portion. This has the effect of holding the arm portion and the tube portion in a fixed spacial relationship.
Abstract:
There is provided a closed storage vessel having a heat conductive mesh-like interior affixed to the shell of the tank in secure heat conductive contact.
Abstract:
A fluid (12), such as dichlorosilane, is stored in a pressure vessel (17) located at a site remote from a processing facility within the confines of a building (14). At such remote site the pressure vessel (17) is subject to climatic temperature variations over a range at the lower temperatures of which a vapor pressure of the fluid may be insufficient to generate a pressure within the pressure vessel to drive the fluid through a duct (36) toward the processing facility. A supply of an inert gas (34) is applied at a first predetermined pressure to the pressure vessel (17) to urge the fluid under such predetermined pressure through the duct (36) toward an evaporator vessel (38) located at the processing facility. The evaporator vessel (38) is maintained at a first predetermined elevated temperature at which the fluid at such first predetermined pressure is in a gaseous state. Any of the fluid urged toward and entering the evaporator vessel (38) is evaporated, such that a supply of the fluid in its gaseous state at the first predetermined pressure is maintained within the evaporator vessel (38). Fluid is drawn from the evaporator vessel and its pressure is reduced, advantageously by a heated regulator (43), to a second predetermined and stable pressure at which the fluid remains a gas at temperatures existing at the processing facility within the building (14). The amount of the fluid within the confines of the building (14) is by the described method and apparatus kept near a practical minimum.
Abstract:
A delivery system for pressurized gas utilizes a flat bed vehicle provided with a fore-and-aft-extending central divider which defines rows of pallet sites on each side thereof. Pallets carried at the sites each protectively enclose a plurality of pressurized gas cylinders and have an overhead gas delivery manifold which is connected to the cylinders. The pallets are retained on the bed of the vehicle by pallet-engaging projections carried on the central divider, and by blocking means arranged along the margins of the vehicle. A piping system extends along the central divider and is connected to a control panel. Bridging conduits connect the piping system with each of the pallet manifolds. Each of the bridging conduits is constructed such that, when its connection with a pallet manifold is released, the bridging conduit automatically retracts to an out-of-the-way position, thereby clearing the path for pallet loading or unloading.