Process and device for preventing the liquefaction-leakage pheno

Details Process and device for preventing the liquefaction-leakage pheno Process and device for preventing the liquefaction-leakage pheno

1992-03-30

1993-12-07

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

73 407, F17C 1300

Patent

active

052674479

ABSTRACT:
The invention relates to a process and device to prevent the liquefaction-leakage phenomenon of a gas in a pressure regulator, in which a gas pipe between a high pressure gas supply source and a pressure regulator for reducing the pressure of gas comprises a double pipe consisting of an inner pipe and an outer pipe, wherein a high pressure feed gas is caused to flow through the inner pipe and a heated inert gas through the outer pipe, thereby heating the high pressure feed gas. After sweeping the inner pipe, the inert gas is analysed to detect the presence of even small traces of the high pressure gas which indicate a leak in the inner pipe.

REFERENCES:
patent: 3364729 (1968-01-01), Yearwood
patent: 3489311 (1970-01-01), Folkerts et al.
patent: 3913341 (1975-10-01), Katsuda
patent: 4450711 (1984-05-01), Claude
patent: 4834137 (1989-05-01), Kawaguchi et al.

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