Study on the position of multi-probe ultrasonic wave in measuring pipeline

摘要

Ultrasound has the advantage of continuous measurement, no radioactivity, low cost, strong adaptability and unimpeded flow. In this paper, aiming at the location of ultrasonic probe, the sound field distribution in the pipeline is established by using the finite element software COMSOL. The sound field distribution on the pipeline under different acoustic frequency and different attenuation coefficients is studied. The results show that the position of the ultrasonic wave and the sub-beam are different. The same frequency and sound attenuation coefficient are different, and the position of the main beam and the sub-beam is unchanged. These conclusions indicate that the design position of the receiving probe should be determined mainly on the basis of the acoustic frequency, and the receiving probe should be placed at the peak position of the main and secondary beams at each frequency.