Other

Kenneth Knecht

Paul C Tucker

A turning system for rotating equipment, comprises a motor configured for speed control; a gear connected to the motor, the gear is further connected to the rotating equipment, the motor and gear are configured for rotating the rotating equipment at speeds less than the normal operating speed of the rotating equipment; and a controller configured to perform a method, wherein the method comprises a sequence of steps including, rotating the rotating equipment from a standstill an angular amount of rotation, stopping rotation after moving the angular amount of rotation, and maintaining the rotating equipment at a standstill for a period of time; and repeating the sequence of steps. By performing the sequence of steps after the rotating equipment comes to a standstill, bowing or sagging of the rotating equipment can be prevented, and the rotating equipment is ready to startup at anytime.

Digital shaft positioning for a turbine rotor

A turbine and the method of operating the turbine when taking the turbine off-line includes transmitting power to a No. 1 shaft via a main motor to turn the turbine at an original turning speed, wherein the No. 1 shaft drives a No. 2 shaft; reducing a speed of the turbine; and when the speed of the turbine is reduced to a predetermined RPM, switching power transmission to the turbine from the No. 1 shaft to a No. 2 shaft, wherein the No. 2 shaft is driven by an auxiliary motor, and the No. 2 shaft drives the No. 1 shaft to turn the turbine at a slow turning speed less than the original turning speed.

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Chugiak, AK, United States of America

Kenneth Knecht