Optimal design of rectifier for ultrasonic flow meters
The measurement accuracy of gas ultrasonic flow meters is determined by the measurement accuracy of flight time and the adaptability of the flow field of the flow meter itself,the flow field adapta-bility of the flow meter is determined by the sound channel arrangement of the flow meter and the perform-ance of the rectifier.The article designs a rectifier embedded in a flow meter,the structure of the rectifi-er,the functions of each module.This article introduces the theoretical basis,process,and criteria for evaluating the performance of rectifiers.The performance optimization of the rectifier mainly depends on the optimization of the spinner,the article provides a comparison of performance parameters between rec-tifiers equipped with 8 gyrators and rectifiers equipped with 10 gyrators under straight and single bend conditions,the experimental results show that rectifiers equipped with 10 spinners have better flow field adaptability:repeatability meets national standard requirements,the difference between the indication er-ror of straight pipes and the indication error of bent pipes is less than 0.3％.The innovation of the article lies in providing the theoretical basis and a complete process for the design and optimization of a gas ultra-sonic flow meter rectifier,it can help the researchers who design the ultrasonic flow meter rectifiers.
万方数据
维普
