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Title: Tank depletion flow controller

Abstract

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.

Inventors:
 [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
Aerojet Nuclear Co., Idaho Falls, Idaho
OSTI Identifier:
862676
Patent Number(s):
3987815
Application Number:
05/592,485
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
G - PHYSICS G05 - CONTROLLING G05D - SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
DOE Contract Number:  
AT(10-1)-1375
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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/

Citation Formats

Georgeson, Melvin A. Tank depletion flow controller. United States: N. p., 1976. Web.
Georgeson, Melvin A. Tank depletion flow controller. United States.
Georgeson, Melvin A. Tue . "Tank depletion flow controller". United States. https://www.osti.gov/servlets/purl/862676.
@article{osti_862676,
title = {Tank depletion flow controller},
author = {Georgeson, Melvin A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {10}
}

Patent:

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