System for monitoring metal-to-metal contact in rotating...

Details System for monitoring metal-to-metal contact in rotating... System for monitoring metal-to-metal contact in rotating...

G - Physics

08

B

340/106, 324/58

G08B 21/00 (2006.01) F01D 11/02 (2006.01) F01D 21/04 (2006.01)

Patent

CA 1199090

ABSTRACT OF THE DISCLOSURE A rub between the rotating and stationary parts of a turbine is detected by connecting the rotor to elec- trical ground and introducing electrical energy into the rotor-ground circuit. A rub between the rotating station- ary part modifies the currents in the grounding circuit to an extent that the condition may be detected so as to provide a rub indication. In another embodiment the rotor discharge current in one or more grounding devices norm- ally associated with a turbine is monitored to detect any abnormal condition.

428053

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