Method for conditioning a liquid in receptacle fitted with a positive pressure valve
AssigneeL'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorJoachim Grundmann
Life of this patent
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Abstract
A method for conditioning a receptacle which can contain a pressurized liquid, e.g. a gas cylinder, whereby the receptacle is fitted with a positive pressure valve into which a gas with a water or water vapor content of less than 40 ppmv is introduced after the internal volume, i.e. the inside, of the receptacle has been dried in order to remove any water vapor therein. A receptacle conditioned in such a way can be used in a welding operation, especially TIG, MIG or MAG welding, or in a plasma-arc cutting operation.
Claims10
A process for filling a filling container intended to contain pressurized fluid with a fluid, said container being fitted with a positive-pressure regulator having closure means which impede and/or prevent any inflow and/or any outflow of fluid when the pressure in the bottle falls below a specified positive pressure limit (PPL) value, in which process the fluid having a water or water-vapor content of less than 40 ppmv is introduced into the container after the inside of said filling container has been subjected to a drying operation.
Dependencies are inferred from the claim text.