Pressure limiting control for an inlet draft fan in an electric power plant
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United States of America Patent
Stats
-
Jun 3, 1980
Grant Date -
N/A
app pub date -
Oct 11, 1978
filing date -
Oct 11, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The inlet vanes for an induced draft (ID) fan in a power plant boiler are position controlled in accordance with the furnace pressure to limit the potential destructive power developed by the fan. The ID inlet suction temperature is sensed and a control signal is developed as a function of the inlet temperature to limit the opening of the inlet vanes during boiler startup.
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