Method and system for filling liquid cylinders
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United States of America Patent
Stats
-
Nov 28, 1989
Grant Date -
N/A
app pub date -
Jul 22, 1986
filing date -
Jul 22, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Substance loss is minimized in a station for loading a container with cryogenic substance stored in a tank. A throttle vent valve is provided at the outlet vent of a container being loaded for controlling the differential pressure between the storage tank and the container. The pressure of the substance being loaded and the pressure within the container are sensed and the differential pressure is monitored. The throttle vent valve is adjusted to bring the differential pressure to a value equal to the optimum differential pressure for minimizing substance loss. The optimum differential pressure is selected by determining the filling loss for a plurality of values of differential pressure and selecting the differential pressure which produces the minimum filing loss. Overfilling of the container is prevented by sensing the temperature at the outlet vent and terminating the supply of substance to the container when the temperature of the vent reaches a predetermined level. Cavitation is prevented by supplying substance to the pump and activating the pump in response to a predetermined pump temperature.
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