ACOUSTIC FLOWMETER Russian patent published in 2016 - IPC G01F1/66 

FIELD: measuring equipment.

SUBSTANCE: acoustic flowmeter comprises a transmitting transducer to generate in an object at least one ultrasonic wave introduced into medium on inner side of object facing said medium in form of a longitudinal wave, and a receiving transducer for detection in said object an ultrasound signal, at least partially arising due to said longitudinal wave. Transmitting transducer is in form of high-frequency induction coil without acoustic communication of transmitting transducer with surface of object to generate in region close to surface of object, primarily a metallic object, a variable magnetic field. Due to interaction of magnetic field with static or quasi-static magnetic field in said area, an ultrasonic wave is generated. Distinguishing feature is that transmitting transducer is made to generate directed waves.

EFFECT: reduced requirements for accuracy of mutual location of transmitting and receiving transducers and providing more uniform distribution of power sounding medium in direction of flow of medium through object.

19 cl, 22 dwg