The laser optical alignment system is used for accurate bore measurements on turbines
Ludeca, Inc.laser optical alignment system is used for accurate bore measurements on turbines. It is designed to be significantly faster than piano wires, micrometers and optical instruments. This system uses a visible-laser emitter and intelligent sensor to determine the centerline position of bearing pockets with micron accuracy, even over separations of up to 130 ft. Readings are transmitted to a computer that automatically plots an alignment diagram of measured points and the horizontal and vertical offsets from the laser reference line. The reference line may be shifted so that the bore offsets reflect their position relative to the shaft centerline.
Bore presets may be introduced to measurements that account for catenary curves, thermal growth and rotor shifts during operation. Any two bore locations may be "fixed" for determining optimal moves. This flexibility allows for quick set up during any point of the outage.
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