Control system for liquefied gas container

Details Control system for liquefied gas container Control system for liquefied gas container

1991-11-27

1994-03-15

Bennett, Henry A.

Refrigeration

Storage of solidified or liquified gas

With conservation of cryogen by reduction of vapor to liquid...

62 481, 62 491, 62 507, 62 511, 62 513, F17C 502

Patent

active

052937500

ABSTRACT:
A control apparatus for maintaining constant the temperature and pressure of the vapor phase in a very low-temperature controlled liquefied gas container includes a pressure sensor, a temperature sensor, two electromagnetic valves, and a refrigerator. When operation of the refrigerator disturbs measurement at low temperature, the refrigerator is stopped. Gas vaporizes from a liquid phase, and gas is discharged from the container. In this manner, the temperature and pressure of the liquefied gas in the container can be maintained constant. After measurement, the liquid level in the container will be lowered by evaporation, so that the liquefied gas is supplied to the container. In this manner, the liquid level in the container can be maintained constant.

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