Liquid heaters and vaporizers – Feeders – Automatic
Patent
1979-05-14
1981-01-06
Ciarlante, Anthony V.
Liquid heaters and vaporizers
Feeders
Automatic
F22D 526
Patent
active
042429897
ABSTRACT:
This disclosure relates to apparatus for steam generation or boilers and more specifically, discloses a system for controlling the fluid level in a boiler drum. Drum level control requires an observation of the fluid level in the drum and also takes into account steam flow out of the drum and feedwater flow into the drum. The present invention improves upon the prior art by providing an unusually responsive drum level controller in combination with inputs relating to steam flow and water flow. This is accomplished by considering the derivative of steam flow minus water flow in combination with a fast drum level controller.
REFERENCES:
patent: 3172462 (1965-03-01), Brunner
patent: 3250259 (1966-05-01), Profos
patent: 3417737 (1968-12-01), Shinskey et al.
patent: 3780705 (1973-12-01), Le Febre de Vivy
Ciarlante Anthony V.
General Electric Company
Mitchell James W.
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