Patent ID: 6751281
Filing Date: 2004-06-15
Classification: G01H,G21C,G21D,Y02E

Abstract:
A measurement system of torsion vibration for Reactor Internal Pump, including:a reactor internal pump that has a motor contained in a cylindrical motor casing; a vibration detector fitted on said cylindrical motor casing that detects vibration in radial directions; a sound detector fitted on said cylindrical motor casing that detects the vibration in the circumferential direction; a vibration calculating unit that receives the vibration waveform signal detected by said vibration detector, and the sound waveform signal detected by said sound detector, said vibration calculating unit calculating the difference in amplitude of said vibration signal and said sound signal thereby obtaining an axial torsional vibration signal of said motor; and a visualization device that visualizes said axial torsional vibration obtained by said vibration calculating unit.