Ultrasound-flow rate measuring device for fluid flowing in pipeline, has confuser, and ultrasound transducers whose measurement signal enter into and/or leave from transition region in fluid

摘要

The device has a confuser (9) with large diameter (11), which corresponds to nominal diameter (13) of a pipeline (3). Smaller diameter (12) of the confuser exhibits a mass (20) of 40-80 percent of the nominal diameter. A measurement signal (14) of ultrasound transducers enter into and/or leave from a transition region (15) in a fluid. The transition region exhibits a spacing (17) of a plane with the smaller diameter of the confuser along flow direction of fluid. The spacing corresponds to 20-200 percent of the large diameter of the confuser.