Electricity: measuring and testing – Magnetic – Displacement
Patent
1985-03-06
1987-02-17
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
307351, 324103P, 415118, G01B 714, G01H 1100, G01R 1904
Patent
active
046442707
ABSTRACT:
A plurality of proximity sensors are disposed in a turbine flow guide to measure flow guide-to-turbine blade tip distance at various points around the flow guide. The sensor signals are detected and the peak-to-peak voltage of the detected signals provides an indication of the desired distance measurement. The signals are also monitored and if ambient operating conditions causes the signals to exceed predetermined positive or negative thresholds, corrective signals are generated so as to bring the detected signal back into an acceptable range. A proximity sensor is also provided to measure axial movement of the rotor to which the blades are attached so that the other sensor signals can be modified as a function of the measured axial position.
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Kraus Mark G.
Oates Robert M.
Petronio Carlo F.
Schron D.
Strecker Gerard R.
Westinghouse Electric Corp.
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