Study on Optimization of Ultrasonic Flow Measurement in Water Tunnel of Water Supply Project Diverting from Chuo'er River to Xiliao River
The measurement of instantaneous flow of non-pressure tunnel with irregular section is affected by various factors such as measurement method,measurement point selection,section shape,operating conditions,etc.The measurement accuracy is closely related to the water scheduling of water diverting project.In this paper,taking the ultrasonic flowmeter with time difference method for flow measurement in water tunnel of water diverting project from Chuo'er River to Xiliao River as an example,and combining with the physical engineering,the system configuration,section selection and sound channel iteration method of flow measurement of irregular section such as Chengmen tunnel without pressure are analyzed by selecting the appropriate section location based on practical projects.