Abstract:
This invention relates to methods of fabricating components of a pressure vessel using a dicyclopentadiene prepolymer formulation in which the purity of the dicyclopentadiene is at least 92% wherein the formulation further comprises a reactive ethylene monomer that renders the prepolymer formulation flowable at ambient temperatures and to pressure vessels that are fabricated by said methods.
Abstract:
A gas storage apparatus comprises a pressure vessel in the form of a cylinder (2), closed by a valve (4), containing a non-permanent gas having under its storage conditions a gas phase and a liquid phase. A jacket formed of plastics sachets (6) surrounds and is in heat transfer relationship with the outer surface of the cylinder (2). The sachets define closed compartments containing a heat release substance which is liquid at 20°C. On opening the valve (4), the non-permanent gas is delivered from the cylinder (2). The liquid phase of the non-permanet gas absorbs heat from the heat release substance which undergoes fusion. The heat release substance may be water.
Abstract:
A lightweight high pressure repairable piston composite tie-rod accumulator (10) that does not use a load bearing metallic liner. An exemplary accumulator (10) includes composite tie rods that sustain the axial stress induced by pressurization of the accumulator (10), while the shell (12) is designed such that it sustains the stress of pressurization in the hoop direction. The tie rods can be secured using a wedge-type tie rod retention mechanism. As a result, no pretension is applied to the tie rods and the composite shell (12) may be designed entirely for hoop stress.
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:
A method of reducing ventilation gas flow rate through a gas cabinet comprising a gas source vessel and a gas delivery system comprising a gas cabinet.
Abstract:
A compact and robust gas pressure regulator for use with gas delivery systems is provided, the gas pressure regulator in one form being adapted for mounting to a gas cylinder. The gas pressure regulator includes a body defining a front portion and opposed side portions, a first gas pressure indicator mounted to a lower end of the front portion of the body, and a second gas pressure indicator mounted to an upper end of the front portion of the body. The first gas pressure indicator and the second gas pressure indicator are stacked in a vertical configuration. A pressure adjustment knob is mounted to one of the side portions of the body and horizontally relative to a longitudinal axis of the pressurized gas cylinder. An energy absorbing device is employed to absorb energy from impact loads on the pressure adjustment knob.