Integral turning gear for turbine rotors

An integral turning gear is machined onto one-half of a turbine rotor shaft coupling or on a pedestal of a rotor shaft for engagement with a motorized pinion for rotating the shaft of the turbine, for example during shutdown. The gear teeth are integrally formed on the coupling or shaft and do not r...

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Bibliographische Detailangaben
Hauptverfasser:	FARRELL ALISON C, ROBERTSON KENNETH J
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	An integral turning gear is machined onto one-half of a turbine rotor shaft coupling or on a pedestal of a rotor shaft for engagement with a motorized pinion for rotating the shaft of the turbine, for example during shutdown. The gear teeth are integrally formed on the coupling or shaft and do not require additional length of axial rotor span or introduce significant stresses. The motorized pinion may engage the integral turning gear teeth to rotate the rotor, for example, during turbine shutdown to prevent the rotor from sagging while cooling from elevated temperatures.