Measuring and testing – Embrittlement or erosion
Patent
1995-02-01
1996-03-05
Williams, Hezron E.
Measuring and testing
Embrittlement or erosion
G01N 1700
Patent
active
054957524
ABSTRACT:
A feed water steam nozzle erosion detector composed of an erosion detection pipe alongside and immediately adjoining the feed water steam nozzle, and at least one sensor connected with the erosion detection pipe to detect that the erosion of the feed water steam nozzle has proceeded to the point of eroding into the erosion detection pipe. It is preferred that three sensor modalities be provided. A temperature sensor detects a rise in temperature occasioned because of steam entry into the erosion detection pipe. A metal fragment sensor detects the presence of metal fragments associated with the erosion of the erosion detection pipe and the feed water steam nozzle. A steam pressure sensor detects a build-up of steam pressure in the erosion detection pipe and further serves as a steam discharger with built-in pressure relief. Each of the sensors is associated with an electrical circuit which provides one or more signals to the boiler operator when erosion has been detected by the sensors.
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Keefe Peter D.
Politzer Jay L.
Williams Hezron E.
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