Method and apparatus for detecting flow instability in steam generator
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United States of America Patent
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-
Oct 6, 1981
Grant Date -
N/A
app pub date -
Feb 27, 1980
filing date -
Mar 8, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for detecting the flow instability in steam generators is provided. First, a number of limit values on the differential pressure between the water-side inlet and outlet of the steam generator are determined at different feedwater flow rates. The limit values define the onset of the flow instability. By connecting the thus determined limit values, a boundary line defining the occurrence of the flow instability is obtained. Second, it is checked whether the measured differential pressure between the inlet and outlet at an actual feedwater flow rate is above or below the boundary line so as to determine if the flow instability has occurred or not in the steam generator. An apparatus for accomplishing the method is also provided.
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