关键词: 高温炉管, 红外热像, 剩余寿命预测, 在线

Abstract: The work focuses on the life prediction of atmospheric heater tubes. Temperature information of tubes had been acquired by infrared inspection method online measurement with speediness and accuracy, and the temperature values was obtained from these images by using software of infrared image, which was programmed by our research group. On the basis of infrared image technology, remaining life prediction theory and a software system predicting remaining life of heater tubers online, with the temperature and other operation data of heater tubers, the state and remaining life of the tubes is assessed and analyzed by accumulated tube damage method using Lar-son-miller creep model. The results showed that the temperature of tubes in current operating condition is normal. The research provided scientific data for deciding repair or replacement of tubes. The kind of life prediction technique had wide engineering practicality.

Key words: Atmospheric heater tubes, Infrared image, On-line, Remaining life prediction