Abstract:
PROBLEM TO BE SOLVED: To keep piston rotation prevention function.SOLUTION: A piston rotation prevention device 50 is used in gas storage equipment including a cylindrical storage part body and a piston provided in the storage part body in such a way that it can be lifted up or descended in the storage part body. The piston rotation prevention device 50 includes a protrusion 51 that protrudes inwardly from an inner surface of the storage part body and extends in a vertical direction and a pair of claw members 55 provided in the piston and arranged at both sides of the protrusion. The piston rotation prevention device 50 further includes slide members 56 which are supported at a piston side in such a way that the slide members can slide toward a diametral direction of the storage part body and which are provided in association with the respective claw members; a rotation shaft 57 crossing at a right angle with a moving direction of the slide member and provided at the piston side; levers 58 rotatably supported in respect to the rotation shaft and having abutting segments 58a arranged at the extremity end in such a way that it can be abutted against the slide member; and springs 59 which are provided near the rear end of the lever and generate a pushing pressure causing the abutting segments of the levers to be abutted against the slide members and pushing the claw members toward the protrusion.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of bulk transport and storage of a gas in a liquid medium.SOLUTION: Provided is an integrated ship mounted system for loading a gas stream, separating heavier hydrocarbons, compressing the gas, cooling the gas, mixing the gas with a desiccant, blending it with a liquid carrier or solvent, and then cooling the mix to processing, storage and transportation conditions. After transporting the product to its destination, a hydrocarbon processing procedure and liquid displacement are provided to unload the liquid from a pipeline and storage system, separate the liquid carrier, and transfer the gas stream to a storage or transmission system.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for loading a compressed fluid such as natural gas and discharging the compressed fluid out of a containment.SOLUTION: A compressed fluid is injected into a bottom of a container system for storage and/or transport until target pressure reaches, and after that, gas is withdrawn from an upper portion of the container system at a rate to maintain target pressure while the compressed fluid is injected in the bottom. The compressed fluid is cooled through an expansion valve and by refrigerated chillers or by injecting a cold liquid, for example, liquid natural gas, of the same chemical composition as the compressed fluid into the compressed fluid prior to injection into the container system. Discharge from the container system to a receiving facility begins with blow down from the bottom portion of the container system into receiving equipment without a displacement fluid, and continues until pressure falls below acceptable differential pressure. Discharge stream is passed through a separator and a light gas from the separator is pressurized and injected into an upper portion of the container system to drive the compressed fluid out the bottom. The light gas is pressurized using either a compressor or a heated tank system where two vessels operate in parallel, trapping and heating the light gas and then discharging to the container system from one while filling the other and alternating the operation between the two.
Abstract:
A gas cylinder (100) in the neck (20) of which is installed a balanced valve (26). The valve is fitted in the outlet of the cylinder and its output emerges into a recess (22) which opens to the top surface (23) of the cylinder. Thus the valve is protected from physical damage. A thread (27) in the bore enables the attachment of fittings such as a regulator or a filling device (not shown) which cooperate with the valve (26) to control passage of gas from or into the cylinder.