Westinghouse Electric Corporation

Siemens Power Generation, Inc.

Wilbert B Rethage

Paul Guenther

George F Dailey

Karl A Katzor

Gerard A Pompa

Hamedo A Jaafar

Mark William Fischer

Waheed A Abbasi

Gerald I Marron

Alan A Marfin

James W Alford

Patricia A Bosco

Vincent Berryman, Jr

William B Lutz

A virtual-tight-wire system is provided for determining a centerline in a large rotary machine (). The virtual-tight-wire system includes a columnar light source () that is positioned at one end of the rotary machine (). A columnar beam of light () is emitted from the light source () toward light receivers () in a first and second centering tool (). The beam of light () is adjusted to impact the center of the light receivers (). Once the beam () has been aligned, the beam acts as a virtual tight-wire for identifying a centerline of the rotary machine ().

Virtual-tight-wire system for assembly and repair of rotary machinery

Apparatus for examining an elongated cylindrical body having an axial bore, such a rotor shaft, which apparatus includes an energy transducer which is supported by a drive rod to be advanced within the bore while obtaining readings indicative of the physical condition of the body, a drive unit supporting the rod, and a fixture for supporting the drive unit in order to center the drive rod within the bore, the fixture being supported by the body and including a mechanism for adjusting the fixture in order to establish the desired axial alignment of the drive rod. The fixture is provided with an arrangement for supporting a calibration block which is used for calibration of the apparatus, the arrangement being adjustable relative to the fixture to bring the calibration block into a desired position relative to the transducer when the drive unit is mounted on the fixture. The drive unit is rotated and advanced axially by DC permanent magnet motors and at least the motor which effects rotation of the drive rod is controlled by position and velocity error signals derived with the aid of a pulse encoder connected to rotate with the motor. A starting angular reference position of the body is determined with the aid of a further fixture which provides a flat reference surface having a defined orientation relative to a reference point on the body.

Rotor bore inspection system

An inspection system inspects the interior of the stator of an electric generator for the existence of several problems. The inspection apparatus is mounted on a carriage that travels along the slots defined by the stator. An indexer is mounted to the rotor of the generator and can travel around the circumference of the rotor to deliver the carriage to the desired slot. An indexer plate is mounted to the indexer and can be registered with the desired slot to insure that the carriage can enter the slot from the indexer. An associated motor controller disables the motor if an electrical fault is disclosed.

Electric generator inspection system and motor controller

Electric generator inspection system

A blade pitch measurement apparatus comprises first means for providing an indication of the instantaneous angular position of the rotor relative to a reference location and second means for providing an indication of the passage of a tenon through a selected location about the rotor. A third means is operatively coupled to and responsive to the indications provided by the first and second means for providing an indication of the angular position of each tenon and for computing blade pitch. A method of measuring blade pitch is also disclosed.

Blade pitch measurement apparatus and method

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Apollo, PA, United States of America

Wilbert B Rethage