Abstract:
A low heat-leak cryogenic system comprising a cryogenic fluid, a first lamina having an external side facing toward and exposed directly to, or indirectly to, the cryogenic fluid and an internal side facing away from the cryogenic fluid; a second lamina spaced apart from the first lamina, and at least one block or layer of coherent aerogel extending from the first lamina to the second lamina. In another version, the aerogel is in a gaseous environment having a pressure not greater than 250,000 micrometers of mercury. In another version, at least one of the lamina is flexible so as to at least partially transmit an external load, such as that imposed by the atmosphere, to the coherent aerogel, and the coherent+ aerogel is capable of at least partially transmitting a load imposed on it from one lamina to the other.
Abstract:
Lightweight compressed gas cylinders are incorporated into a module which contains manifolding and which is designed for easy loading, unloading and transport on a flat-bed truck or other vehicle, particularly a roll-on roll-off transport truck, which is a specialized truck for mechanized handling of large containers. The module eliminates the need to retain the vehicle itself at the site of use. While a variety of cylinders of composite construction to achieve light weight can be used, certain novel composite cylinders whcih are particularly useful are also disclosed. These cylinders have a lightweight metallic liner or core cylinder wrapped with three layers of wound fiber. The inner and outer layers are axially-wound glass fiber and the intermediate layer is hoop-wound carbon fiber.
Abstract:
A vessel for use in the transportation of cryogenic liquids in over the road cryogenic tankers has a double wall with a highly efficient, relatively light weight fiber glass insulation in the cavity between the walls. The fiber glass insulation increases in density from the inner wall of the cavity to the outer wall of the cavity having the least density adjacent the cold inner wall of the vessel which contains the cryogenic liquid and the highest density adjacent the outer wall of the cavity which is exposed to ambient conditions. One or more layers of reflective septa can be incorporated into the fiber glass insulation to reduce radiant heat transfer.
Abstract:
Inner and outer welded steel protective tanks are separated by a space containing a granular insulating material such as perlite preventing excessive heating of fuel in a storage space in the inner tank, even when there is a fire at the site. The inner tank is subdivided into portions by a partition defining a storage space and an overfill containment space receiving overflow from the storage space portion, with a sensor detecting overflow. The overflow containment space is also arranged to collect separated fuel when the tank system is used with a vapor recovery system. The granular insulating material acts as an explosion suppressant by dissipating heat and fuel vapors which may be present in the insulation space as a result of leakage from the inner tank.
Abstract:
A trailer with piping and accessories capable of maintaining the ultra high purity of a cryogenic liquid while receiving and transporting the liquid, purging an external receiver, and transferring liquid to the receiver. The trailer has a heat exchnger for vaporizing a liquid flow from its liquid container into warmed gas. The gas is used for purging an external receiver and for pressurizing the liquid container sufficiently to transfer liquid into the purged receiver. The trailer piping allows purging of and then transferring to the receiver without opening any connections. The number of welded surfaces in the trailer capable of trapping and generating contaminants are reduced, particularly the number of welded penetrations of the liquid container.
Abstract:
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.
Abstract:
A gas container connecting device for portable gas stove is related to a gas container connecting device, particularly to the kind which is used for portable gas stove either for outdoor or indoor activity. It utilizes a pair of claws formed on a connecting means to hold the rim portion commonly found on gas container, therefore, no additional support is required to hold the gas container, so that the gas container can be secured in open-ended position to facilitate the operation thereof.
Abstract:
System for safety storage of liquids including a closed horizontal cylindrical primary tank inside a partially closed horizontal cylindrical secondary tank spaced apart from each other so as to provide an open space around the outside of the primary tank and the inside of the secondary tank. The outer secondary tank being closed at one end with a circular head and being open at the other end with its original head repositioned interiorly so as to substantially close the secondary tank and leave an open recessed area inside the tank walls and outside the repositioned head; supporting structural beams along the outside of the secondary tank to support the outside system in a horizontal position; spacer skid members inside longitudinally along the inside bottom of the secondary tank on which to rest the primary tank; vents to vent each tank to the outside atmosphere, measure relief value, and a lockable filler housing through which the primary tank can be filled with liquid; a liquid pump connected to the inside of the primary tank to pump liquid therefrom through an exit delivery hose and nozzle; a suction pipe line connecting the primary tank to the liquid pump; and a closure plug for opening and closing the suction pump line.
Abstract:
A hand truck includes a carrying device connected to a wheel arrangement for transporting a load on a first support surface. The wheel arrangement is slidably displaceable with respect to the carrying device and can be selectively secured in a locked position when moving the hand truck on the first support surface. The carrying device including the load is transferable to a second elevated support surface when the wheel arrangement is slid toward a handle end of the carrying device. The wheel arrangement may be removed from the carrying device or alternatively pivoted for placement on the second support surface.
Abstract:
An apparatus to prevent a tank, such as a scuba tank from rolling around on a supporting surface such as the bed of a truck or within the trunk of an automobile. The apparatus comprises a split ring-shaped band which is to be located about the exterior of the scuba tank. The band is attached in a tangential manner to a flat plate. The length of the flat plate is sufficient to laterally support the scuba tank when at rest on the supportive surface and prevent such from rolling around.