Online stress detection system for hydraulic turbine set fastening bolt by using ultrasonic longitudinal and transverse waves

The invention discloses an online stress detection system for hydraulic turbine set fastening bolts by ultrasonic longitudinal and transverse waves, which comprises a core control system and a control system login module, and is characterized in that the core control system is bidirectionally connected with the control system login module through remote communication; the input end of the core control system is electrically connected with the output end of a bolt stress measurement module. A relation model between ultrasonic longitudinal and transverse wave acoustic time and stress is established according to obtained data, calculation is performed through an ultrasonic longitudinal and transverse wave acoustic time-stress model calculation module, and result data is compared with national standard stress range values of materials pre-stored in a system database through a bolt stress and acoustic time data comparison module. And the data analysis and processing of workers are facilitated, the workload is redu