Westinghouse Electric Corporation

Siemens Westinghouse Power Corporation

Siemens Energy, Inc.

Gary R Lowther

Warren W Jones

Charles M Rowe

Donald L Udavchak

A ground detection apparatus for use in a power generating system including an excitation circuit and a driven rotatable shaft. A ground detector ring is disposed on the rotatable shaft of the power generating system. A ground detection transmitter is mounted on the ground detector ring and in electrical communication with the excitation circuit of the power generating system. The ground detection transmitter is utilized to detect ground faults in the excitation circuit of the power generating system and to send a signal associated with ground faults detected by the ground detection transmitter. A ground detection receiver is associated with a stationary portion of the power generation system and is in communication with the ground detection transmitter for receiving the signal associated with ground faults detected and sent by the ground detection transmitter.

Electronic ground detection apparatus for use on ground detector ring of power generating system

A baffle system for routing cooling fluids through a dynamoelectric machine. The baffle system may include a locking cam mechanism for releaseably attaching a baffle to a stator assembly to substantially eliminate an annular air gap between a rotor assembly and a stator assembly. The baffle system may include a locking strip attached to a stator slot wedge to seal the locking cam mechanism and baffle to the stator assembly. In other embodiments, the baffle system may include a friction pad for sealing the locking cam mechanism and baffle to the stator assembly. The baffle system may also include a locking tool for simultaneously, or individually, moving the locking cam mechanism from an unlocked position to a locked position, or vice versa.

Cam locked air gap baffle assembly for a dynamoelectric machine

A gas-cooled turbine generator includes a rotor having baffles arranged in rings and defining a plurality of gas cooling zones. A stator core has stator slots in a bore in which the rotor is received. A plurality of air gap baffle assemblies are arranged in segmented baffle rings in the stator slots and cooperate with the zone rings on the rotor. Each of the air gap baffle assemblies includes at least one baffle segment and an individual locking cam cooperating with a respective wedge of the baffle segment to lock the baffle segment relative to a stator slot at which the baffle segment is positioned such that prior baffle 'trains' are no longer required.

Air gap baffle assembly for gas-cooled turbine generator and method of installing

A cam locked air gap baffle assembly and method of installing same within a stator of a large, gas-cooled dynamoelectric machine utilizes a plurality of segmented baffles spaced by insulated tubes. Each baffle segment includes a wedge portion with a rotatable cam which serves to expand the wedge portion against the stator slot thereby locking it in place.

Dynamoelectric machine with cam locked air gap baffle assembly

In large dynamoelectric machines such as turbine generators, an air gap baffle assembly has eccentric rings to provide a differential thickness from top to bottom, so that before installation of an inner ring portion of the assembly, the rotor may be installed with greater clearance.

Growing community of inventors

Casselberry, FL, United States of America

Gary R Lowther