초록 ▼

Gas cylinders are filled with mixtures of gases comprising a minor component, which is to be present in the mixture at a concentration of 10% or less of the total volume of the cylinder, and a major component, which is to be present at a concentration greater than about 10% of the total volume, by c

Gas cylinders are filled with mixtures of gases comprising a minor component, which is to be present in the mixture at a concentration of 10% or less of the total volume of the cylinder, and a major component, which is to be present at a concentration greater than about 10% of the total volume, by charging the lighter component into a chamber of given volume to a pressure and at a temperature such that the volume provides the desired fraction of minor component in the gas mixture, and then flushing the minor component into the cylinder using major component gas as the flushing agent. The pressure at which the minor component volume is to be measured is preferably at or near the final pressure of the filled gas cylinder.

대표청구항 ▼

[ What is claimed is:] [1.] A method for filling a gas vessel of known volume to a target pressure with at least two gases to form a gas mixture comprised of a major gas component and at least one minor gas component comprising:(a) for each minor gas component of said gas mixture, charging said mino

[ What is claimed is:] [1.] A method for filling a gas vessel of known volume to a target pressure with at least two gases to form a gas mixture comprised of a major gas component and at least one minor gas component comprising:(a) for each minor gas component of said gas mixture, charging said minor gas component into a gas measuring system of specific volume to a predetermined pressure, said specific volume of said minor gas component at said predetermined pressure and the current temperature of said minor gas component being the quantity of said minor gas component that it is desired to introduce into said vessel, as determined by real gas equations, and transferring substantially all of the measured minor gas component to said vessel; and(b) charging said vessel to said target pressure with said major gas component.