Metering apparatus for cryogenic liquids

Details Metering apparatus for cryogenic liquids Metering apparatus for cryogenic liquids

1996-02-26

1997-04-01

Raevis, Robert

Measuring and testing

Volume or rate of flow

System

62 501, B67D 5378

Patent

active

056168381

ABSTRACT:
A cryogenic meter is mounted in an insulated container having an inlet and outlet in circuit with the LNG delivery flow path. The container is filled with LNG to a level above the cryogenic meter to pre-cool it to a desired operating temperature. To maintain the level of LNG in the container during use and to separate vapor from liquid, a float device allows vapor to be returned to the storage tank from the container to refill it with LNG. Because the meter is continuously immersed in LNG during use, it is maintained at a constant temperature permitting the quantity of LNG delivered to a use device to be accurately metered. Temperature and/or pressure signals are sent to a microprocessor which computes the density of the LNG and displays the metered amount of LNG on a display.

REFERENCES:
patent: 4005603 (1977-02-01), Golahny et al.
patent: 4592205 (1986-06-01), Brodbeck et al.
patent: 4597507 (1986-07-01), Rosenblum et al.
patent: 5360139 (1994-11-01), Goode
patent: 5365981 (1994-11-01), Peschka et al.

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