189 / 2025-06-13 16:11:24

Acoustic emission monitoring and signal analysis of weld damage in high-temperature coke tower

coke tower, acoustic emission, weld damage, monitoring

Abstract—As the core high-temperature equipment of the coking plant in petrochemical industry, the weld structure of coke tower is very susceptible to fatigue damage under long-term irregular cyclic loading, which seriously threatens the safe operation of the equipment. Therefore, it is of important engineering application value to carry out research on real-time online monitoring of weld damage. In this study, based on acoustic emission technology, the damage of coke tower welds under high-temperature working conditions was monitored. By extracting the mean value of the characteristic parameters of the acoustic emission signal, a significant reduction in the data volume is achieved under the premise of ensuring the validity of the data, while accurately reflecting the overall change trend of the signal. By further combining the absolute energy information entropy analysis method, the weld damage is accurately identified, and the approximate location of the damage is given. The technical method proposed in this study provides an effective solution for the online identification and assessment of weld damage in high-temperature coke towers, which is of great theoretical and practical significance for ensuring the safe operation of petrochemical equipment.