Apparatus and method for combined x-ray and ultrasonic measurement of multiphase flow parameters

Abstract

The invention discloses a device of measuring multiphase flow parameters by combining X rays and ultrasonic waves. The device comprises a transmitting part and a receiving part which are oppositely arranged on the outer sides of the front and rear parallel walls in a target area, wherein the transmitting part comprises an X ray light source and a plurality of ultrasonic generators which are arranged on the circumference taking the X ray light source as the center of the circle. The X ray light source is driven by a modulated high voltage power supply, and the ultrasonic generators are connected with a high frequency driver. The receiving part comprises an X ray panel detector and a plurality of ultrasonic sensors which are arranged on the circumference taking the X ray panel detector as the center of the circle. The X ray panel detector is connected with an image signal collector, the ultrasonic sensors are connected with an ultrasonic signal collector, and the modulated high voltage power supply, the high frequency driver, the image signal collector and the ultrasonic signal collector are connected with a computer. Meanwhile, the invention further discloses a measuring method of the device. The invention realizes the measuring device and method which are free from interference to a flow field, three-dimensional and accurate.

Description

technical field [0001] The invention relates to a device and method for jointly measuring multiphase flow parameters by X-rays and ultrasonic waves, and belongs to the technical field of multiphase flow measurement. Background technique [0002] The existence forms of various substances in nature can be described by three phases, namely gas phase, liquid phase and solid phase. Multiphase flow generally refers to the flow of two or more substances that can exist in any of the above three phases. Multiphase flow is one of the most common phenomena in nature, such as sand-carrying flow in natural water bodies, debris flow disasters, etc. At the same time, the phenomenon of multiphase flow also widely exists in the production and treatment process of many industrial and agricultural fields, such as petrochemical catalytic cracking production process, metallurgical mineral flotation process, aeration tank purification process in sewage treatment and seed in agricultural producti...

AI Technical Summary

Problems solved by technology

Both are non-contact measurement methods. However, due to the strong X-ray penetration ability, it is often difficult for the X-ray transmission method to provide gas phase measurement data, and it cannot provide three-dimensional data of three-phase distribution; X-ray tomography Although the method can provide detailed three-dimensional data of three-phase distribution (such as the method disclosed in CN200510086250.2), due to the long duration of the tomographic scanning process, the time accuracy is poor; the ultrasonic method has better accuracy and information integrity, but It is easy to cause severe attenuation when it encounters a solid phase, resulting in errors, so it is often used in the measurement of gas-liquid two-phase flow (such as the methods disclosed in CN201210321362.1, CN200610015327.1)

[0005] The measurement of flow parameters in multiphase reactors has always been an international problem. At present, there is no method that can fully realize the uninterrupted, three-dimensional and accurate flow field.

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