Method of preventing atmosphere from entering heat-...

Details Method of preventing atmosphere from entering heat-... Method of preventing atmosphere from entering heat-...

F - Mech Eng,Light,Heat,Weapons

17

C

162/23

F17C 7/02 (2006.01) F17C 9/00 (2006.01) F17C 13/00 (2006.01)

Patent

CA 1198359

ABSTRACT OF THE DISCLOSURE A method of preventing the atmosphere from enter- ing a heat-insulating container adapted to temporarily reserve a low-temperature liquefied gas, wherein a dry gas is constantly supplied to the inside of the heat- insulating container in an inoperative state in order to maintain the inside of the heat-insulating container in a dry gas atmosphere having a pressure slightly higher than the atmospheric pressure. The dry gas is a vaporized gas of a low-temperature liquefied gas of the same kind of the low-temperature liquefied gas to be used. The dry gas is led out from the gas phase in a supply container for supplying the low-temperature liquefied gas to he used, or is a gas obtained by vaporizing a part of the low-temperature liquefied gas to be used, outside the supply container.

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