Abstract:
Substantially rectangular-shaped tanks are provided for storing liquefied gas, which tanks are especially adapted for use on land or in combination with bottom-supported offshore structure such as gravity-based structures (GBS). A tank according to this invention is capable of storing fluids at substantially atmospheric pressure and has a plate cover adapted to contain fluids and to transfer local loads caused by contact of said plate cover with said contained fluids to a grillage of stiffeners and stringers, which in turn is adapted to transfer the local loads to an internal truss frame structure. Methods of constructing these tanks are also provided.
Abstract:
A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for high purity chemicals employing a manifold that ensures contamination free operation and canister change outs with a minimum of valves and tubing.
Abstract:
A pressure vessel having a housing forming a chamber of a polygonal cross-section, the sides of the housing being formed by at least one panel, the panel forming one side being connected to the panels forming an adjacent side by a connector assembly that permits the connected panels at the juncture of the connector assembly to pivot or move relative to one another in the substantial absence of any bending stress at such juncture, and a seal being used to form fluid-tight seals between adjacent sides.
Abstract:
Closure modules are coupled to and enclose ends of a multi-cell pressure vessel, especially a multi-cell pressure vessel having arcuate outer wall segments connected by internal web segments that define a plurality of cells in the pressure vessel. The closure modules each have an arcuate surface portion and at least one interfacing surface portion integrally connected at a marginal extent thereof with a marginal extent of the arcuate surface portion. The arcuate surface and interfacing surface portions define a closure module chamber and have peripheral edges. The arcuate surface portion of one of the closure modules abuts contiguously against an interfacing surface portion of an adjacent one of the closure modules. The closure modules are particularly useful for use with multi-cell tanks and vessel bodies, especially tanks and vessels suitable for storing liquid propane.
Abstract:
A dry-ice container comprising: a casing and, in this casing; carbon dioxide, part of which is in a solid state and another part of which is in a gaseous state, wherein the casing comprises at least one passage for spontaneous escape of carbon dioxide in the gaseous state.
Abstract:
A tank for storing a pressurized gas including walls of a layered material 15 and continuous fibrous bundles of fibers (16) woven through the walls of layered material (15). The continuous fibrous bundles (16 and FIG. 8) have first ends (17) that extend over a first wall of material (15), pass through the first wall of material (15), extend through the interior of the tank (11 ), pass through another wall of the material (15) and have second ends (17) that extend over the other wall of the material (15). Other bundles of fibers (18, 20) can be woven between different walls of the tank (11) in a similar pattern to produce complex three dimensional shapes (FIGS. 3-8).
Abstract:
The invention relates to a watertight and thermally insulating tank built into the bearing structure of a ship, the said tank including two successive watertight barriers, one being a primary one (235) in contact with the product contained in the tank and the other being a secondary one (219) located between the primary barrier and the bearing structure of the ship, these two watertightness barriers being alternated with two thermally insulating barriers, the primary insulating barrier being held pressed against the secondary watertightness barrier by means of fastening means (218); the primary insulating barrier (220) is held pressed against the secondary watertightness barrier (203) by the primary watertightness barrier (235) itself, the said primary and secondary watertightness barriers being secured to the said fastening means (218) in a watertight fashion.
Abstract:
The invention provides a system for the detection of leaks in the primary barrier (150), the secondary barrier (130), and the inner hull (110) of the primary and secondary insulation spaces (140 and 120) of a cryogenic cargo tank (10) carrying liquified natural gas in a transport ship (20) wherein an inert gas is maintained at a first predetermined pressure (P.sub.NP) in the primary insulation space (140) which is less than the pressure of the cargo gas (P.sub.CH.sbsb.2) and wherein the inert gas is maintained at a second predetermined pressure (P.sub.NS) in the secondary insulation space (120) so that the second predetermined pressure (P.sub.S) is less than the first predetermined pressure (P.sub.NP) and is also less than atmospheric pressure (P.sub.O). A gas sensor (930) is placed in the primary insulation space (140) to detect any leaks in the primary barrier (150) and a sensor (940) is placed in the secondary insulation space (120) to detect the presence of any oxygen due to a leak in the hull (110). The flow of the inert gas into and out from both the primary and secondary spaces (140 and 120) over a period of time is measured and any differences in the flow rates in and the flow rates out of each of the insulation spaces is detected. Any differences in the flow rates is indicative of a leak occurring in the secondary barrier and is further indicative of the size of the leak.
Abstract:
A refrigeration storage assembly for the storage of biological materials and the like wherein a higher temperature mechanical refrigeration source and a very low temperature cyrogenic liquid refrigeration source coact to maintain an intermediate low storage temperature.
Abstract:
A thermally insulated storage or transport vessel for low-boiling point liquefied gases comprises a rigid self-supporting inner receptacle or tank and a nonself-supporting outer container. The outer container is formed from a pair of longitudinally spaced opposing rigid end shells interconnected by an intermediate shell provided with stiffening formations extending peripherally of the intermediate shell. The intermediate shell is longitudinally expansible or contractile and may be formed with angular-section on curved-section corrugations.