A two-phase flow tomography system based on an arrayed unipolar conductance probe

Abstract

The invention discloses a two-phase flow tomography system based on an array-type monopole conducting probe. The system comprises a flow pipeline, the array-type monopole conducting probe, multi-channel collection equipment and an annular anode, wherein the array-type monopole conducting probe is fixedly mounted on the inner wall of the flow pipeline and comprises a plurality of detecting points and detecting point lead-out wires; each detecting point lead-out wire passes through the pipe wall of the flow pipeline, and is electrically connected with a lead wire terminal on the outer wall of the flow pipeline; the multi-channel collection equipment is connected with the lead wire terminal and is used for collecting a potential value of each detecting point; and the annular anode is mounted on the inner wall or at the interior of the flow pipeline, and is used for applying motivation to fluid. The two-phase flow tomography system provided by the invention adopts a simple and reliable principle, can effectively lower the uncertainty of fluid detection, can be used for monitoring and recording the phase volume fraction of a cross section further in real time, and can reach certain available precision.

Description

technical field [0001] The invention relates to the technical field of flow pattern identification of two-phase pipe flow, in particular to a two-phase flow tomography imaging system based on an arrayed unipolar conductance probe. Background technique [0002] The phenomenon of two-phase flow exists widely in modern engineering fields such as petroleum and chemical industry. It is of great significance to study the distribution of each phase and flow shape in two-phase flow to better grasp other flow parameters. Drawing on the CT scanning tomography technology in the medical field, it is hoped to obtain real-time tomographic information of flow faults in order to obtain three-dimensional spatiotemporal distribution information of multiphase fluids. Two-phase / multi-phase tomography technology came into being. The application of tomography technology in the measurement of two-phase flow parameters is of great significance to the mechanism research and numerical simulation ver...

AI Technical Summary

Problems solved by technology

However, the commonly seen applications are only for single-point measurement, and can only roughly estimate the water content and judge the flow pattern based on the signal frequency change.

The traditional bipolar impedance probe detects the resistivity of a local point inside the flow channel through two poles that are insulated from each other and are close to each other. Due to the small size of the electrodes, the electrolytic reaction makes the anode easily corroded and has poor durability.

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