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

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

1982-06-01

1985-02-26

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73116, 415118, 340679, G08B 2100

Patent

active

045020469

ABSTRACT:
A rub between the rotating and stationary parts of a turbine is detected by connecting the rotor to electrical ground and introducing electrical energy into the rotor-ground circuit. A rub between the rotating stationary 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 normally associated with a turbine is monitored to detect any abnormal condition.

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