| 摘要 |
PROBLEM TO BE SOLVED: To provide a shaft bearing monitoring system, a rotary machine and a shaft bearing monitoring method that can accurately grasp a shaft center position of a rotary shaft more than ever.SOLUTION: The shaft bearing monitoring system is configured to comprise: a rotary shaft 2; a tilting pad shaft bearing 3 that supports an outer peripheral surface 2a of the rotary shaft 2; a horizontal displacement meter 9 that detects a position of the outer peripheral surface 2a of the rotary shaft 2 from a horizontal direction; a vertical displacement meter 10 that detects the position of the outer peripheral surface 2a of the rotary shaft 2 from a vertical direction; and a control device 12 that regards an input from the horizontal displacement meter 9 as a thermal expansion amount of the rotary shaft 2, and calculates a movement amount in the vertical direction of the rotary shaft 2 by a difference between an input from the horizontal displacement meter 9 and an input from the vertical displacement meter 10. |
