ACOUSTICAL FLOWMETER AND METHOD OF DETERMINING FLOW IN OBJECT Russian patent published in 2017 - IPC G01F1/66 G01N29/24 

FIELD: physics.

SUBSTANCE: method of determining the flow or intensity of the flow of medium in the flow path to the environment of the conductive object, first of all in the pipe (1) or the pipeline, and in the object using the transmitting converter (11), at least, one ultrasonic wave (16) is created, which is a part of the environment on the inner side of the object as a longitudinal wave (8) and creates a spatial distance from the point of entry of the ultrasonic signal, which, at least, partially, arises due to the longitudinal wave (8), is accepted by the receiving transducer (12) and used to analyse the flow or intensity of flow, wherein the transmitting converter (11), by the preferred way, with the rejection of speaker mates with the surface of the object generates the first changing magnetic field in the near-surface region, primarily metal objects, and due to the interaction of the changing magnetic fields with static or quasi-static magnetic field in this region, the first ultrasonic wave is created, and the transmitting converter (11) creates another changing magnetic field in the object area, and due to the interaction of changing magnetic fields with static or quasi-static magnetic field in this area, another ultrasonic wave is created, which is thus superimposed on the first ultrasonic wave that the amplitude of the resulting wave increases in the direction of the receiving transducer (12) and decreases in the direction from the receiving transducer (12), and by the preferred way, the first and the second changing magnetic fields are produced by two high frequency coils (18, 19) of the transmitting converter (11). Moreover, the transmitting and receiving transducers (11, 12) are at a distance from one another that the ultrasonic signal in the receiving transducer (12) consists of multiple passes in the medium.

EFFECT: improving the accuracy of the measurement and the possibility of adjusting the system.

22 cl, 9 dwg