Thickness Detection Technology of High-temperature Fluorine Chemical Pipelines Based on Ultrasonic Guided Wave
Having the ultrasonic guided wave-based non-destructive testing technology adopted to develop a wall thickness testing equipment for high-temperature pipelines in fluorine chemical plants was implement-ed.Through combining with wireless transmission technology,long-term online monitoring of the corrosion was realized to reduce corrosion-incurred leakage,breakage and other accidents.In addition,having the rectangular waveguide rod used as a temperature buffer structure to achieve natural cooling between ultra-sonic transducer and high-temperature pipeline and used as a medium for transmitting non-dispersive hori-zontal shear waves.Through using COMSOL Multiphysics software to conduct thermal simulation analysis and ultrasonic field simulation on the waveguide and high-temperature specimens,the structure of the waveguide was optimized and the non-dispersive horizontal shear waves on the waveguide was excited and received.Experiments and simulation analysis were carried out on stainless steel plates under normal and high temperature conditions,including analyzing propagation characteristics and mechanism of ultrasonic guided,measuring thickness of steel plates at different temperatures,and revealing influence of the tem-perature on thickness measurement.
NETL
NSTL
万方数据
维普
