高温金属配管の蒸気流量計測に向けた超音波ビームフォーカシングに関する研究

抄録

Clamp-on steam flowmeter was is developed by ultrasonic beam focusing technique. In the conventional tuft method, three individual sensors are arranged as receivers to estimate the sound pressure distribution. However, the alignment and the sensitivity of the sensors are required to improve. Therefore, focusing sensor array was newly manufactured. Besides, the signal to noise ratio was improved by applying the damping material which attenuates the guided wave. Then the steam flowrate measurement experiment was conducted by using the developed ultrasonic sensors and damping material. The results reveal the possiblility of steam flowrate measurement by ultrasonic tuft method.