Tank depletion flow controller

Patent · Tue Oct 26 00:00:00 EDT 1976

OSTI ID:862676

Georgeson, Melvin A ^[1]

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1. Idaho Falls, ID

A flow control system includes two bubbler tubes installed at different levels within a tank containing such as radioactive liquid. As the tank is depleted, a differential pressure transmitter monitors pressure differences imparted by the two bubbler tubes at a remote, shielded location during uniform time intervals. At the end of each uniform interval, balance pots containing a dense liquid are valved together to equalize the pressures. The resulting sawtooth-shaped signal generated by the differential pressure transmitter is compared with a second sawtooth signal representing the desired flow rate during each time interval. Variations in the two signals are employed by a control instrument to regulate flow rate.

• Research Organization: Aerojet Nuclear Co., Idaho Falls, Idaho
• DOE Contract Number: AT(10-1)-1375
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3987815
• Application Number: 05/592,485
• OSTI ID: 862676
• Country of Publication: United States
• Language: English

Related Subjects

tank
depletion
flow
controller
control
bubbler
tubes
installed
levels
containing
radioactive
liquid
depleted
differential
pressure
transmitter
monitors
differences
imparted
remote
shielded
location
uniform
time
intervals
interval
balance
pots
dense
valved
equalize
pressures
resulting
sawtooth-shaped
signal
generated
compared
sawtooth
representing
desired
rate
variations
signals
employed
instrument
regulate
radioactive liquid
desired flow
tank containing
signal representing
flow control
flow rate
signal generated
differential pressure
time interval
pressure difference
time intervals
flow controller
shielded location
active liquid
/137/73/