Sampling device for liquefied gases
AssigneeLinde Aktiengesellschaft
InventorDietmar Winkler
Life of this patent
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Abstract
A device for sampling liquefied gas from a receptacle including a sample-receiving container arranged within a compressed-gas vessel, the sample-receiving container being double-walled, the interspace in the double wall communicating with the receptacle for cooling the sample-receiving container by the liquefied gas. The sample-receiving container is connected at its upper end to the interspace by a first valve and at its lower end to the compressed-gas vessel by a second valve. Preferably the second valve is a pressure-sensitive check valve and the two valves may be controllably interconnected.
Claims14
A device for sampling a liquified gas from a receptacle and for the total evaporation of the thus-withdrawn liquid comprising:
- a cooled sample-receiving container;
- a compressed-gas vessel;
- first controllable communication means, including a first valve, between said sample-receiving container and said receptacle;
- and
- second controllable communication means, including a second valve, between said sample-receiving container and said compressed-gas vessel for releasing said liquified gas in the liquid phase into said compressed-gas vessel for evaporation therein.
The device according to claim 2, wherein said sample-receiving container is thermally insulated.
A method for transferring a sample of a liquid from a receptacle to a compressed-gas vessel comprising the steps:
- providing a double-walled sample-receiving container with the compressed-gas vessel;
- insulating the sample-receiving container with the atmosphere of the compressed-gas vessel;
- venting said liquid between the double walls of the sample-receiving container until the sample-receiving container is cooled at least to the boiling point of the said liquid;
- filling the cooled sample-receiving container with the said liquid;
- releasing at least a portion of said liquid from the sample-receiving container into the compressed gas vessel;
- and
- evaporating said released liquid in the compressed-gas vessel.
Dependencies are inferred from the claim text.