Ultrasonic plane wave scanning-type multi-phase flow visual measurement apparatus

Abstract

The invention relates to a ultrasonic plane wave scanning-type multi-phase flow visual measurement apparatus. An ultrasonic plane wave with an adjustable direction of an ultrasonic phased array probeis emitted to scan a to-be-detected area. The ultrasonic plane wave scanning-type multi-phase flow visual measurement apparatus comprises an ultrasonic phased array, an ultrasonic plane wave generation and control unit, an ultrasonic emission unit, an ultrasonic signal acquisition and processing unit, and a data demodulation unit, a phase distribution reconstruction and display unit. The ultrasonic phased array is a combination of M groups of ultrasonic phased array probes which are uniformly distributed at a same cross section position of a to-be-detected, and each group of the phased array probe comprises N ultrasonic array elements. After each group of the ultrasonic phased array probe can respectively emit the ultrasonic plane wave to other group of the ultrasonic phased array probe, an adjacent next group is switched for excitation, and the above scanning test process can be repeated.

Description

technical field [0001] The invention belongs to the field of fluid measurement technology and imaging, and relates to an ultrasonic plane wave scanning multiphase flow testing device based on the principle of ultrasonic transmission, which can realize online visualization and holdup estimation of multiphase flow phase distribution. The present invention takes the measurement of oil / gas / water multiphase flow as the description object, but it is not limited to this application, and the measurement device of the present invention is still applicable to the multiphase flow phenomena existing in other industrial processes and chemical reactions. technical background [0002] Multiphase flow phenomena widely exist in modern engineering fields and equipment such as bioengineering, oil and gas extraction, chemical industry, metallurgical industry, food processing, etc., and play a very important role in industrial production and scientific research. Accurate detection of flow process...

AI Technical Summary

Problems solved by technology

[0005] The traditional tomography technology based on ultrasonic probes has certain limitations: the sound wave emitted by a single probe is fan-shaped (conical), the scanning range is narrow, the side lobe attenuation is large under the condition of wide emission angle, and the bubble projection in the ultrasonic path There is a tendency to expand, direction scanning cannot be realized, and the accuracy of image reconstruction is not high in the case of concave surfaces and many bubbles

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