ACOUSTO-OPTIC LEAKAGE MONITORING SYSTEM FOR NUCLEAR POWER PLANT MAIN STEAM PIPELINE

An acousto-optic leakage monitoring system for a nuclear power plant main steam pipeline (1). The system comprises an acoustic emission leakage monitoring loop (10) and an optical spectrum leakage monitoring loop (20), a signal input end of the acoustic emission leakage monitoring loop (10) and a signal input end of the optical spectrum leakage monitoring loop (20) are respectively disposed at probing points (2) of the main steam pipeline (1), a signal output end of the acoustic emission leakage monitoring loop (10) and a signal output end of the optical spectrum leakage monitoring loop (20) are in communication connection with each other by means of a network switch (30), and a control unit (40) and a display unit (50) are sequentially connected to the network switch (30). By combining acoustic emission and spectroscopy, pre-warning is made before the leakage of the main steam pipeline (1), and the diversity and redundancy of the leakage monitoring method of the main steam pipeline (1) are implemented, so th