Protection method and protection equipment for centrifugal machine

The invention discloses a protection method and protection equipment for a centrifugal machine. The method is characterized in that a photoelectric sensor is adopted to detect the degree of unbalance of the rotating shaft of the centrifugal machine and an alarm is given on the condition that the degree of unbalance is greater than or equal to a preset first threshold. Through the method and the equipment disclosed by the invention, the problem that the degree of unbalance of the centrifugal machine is detected by triggering a mechanical position switch in correlation techniques is solved, the detection precision is improved, and a technical support is provided for whole-process protection of the centrifugal machine in a working state.