Title :
An ECT Flow Regime Identification Technology for Gas/solid Two-phase Flow Phase Concentration Measurement
Author :
Wang, X.X. ; Yan, J.B. ; Hu, H.L. ; Luo, Z.Y.
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
In order to increase the sensitivity of the concentration measuring system of gas/solid two-phase flow and make the concentration measuring accuracy not affected by flow patterns, a flow pattern identification system is added for classified processing of measuring results according to the flow patterns on the basis of the original concentration measuring system. Electrical Capacitance Topography (ECT) system that can present the images inside the gas/solid two-phase flow pipelines is developed based on the original hardware system. The radial basis function (RBF) network algorithm is used for image reconstruction and a method of 2-D Maximum Entropy Threshold Image Segmentation with Chaos-Particle Swarm Optimization (CPSO) algorithm is proposed to segment the images collected by an ECT system. Among the system, the 12-electrode capacitance sensor is not only used for concentration measuring but also for ECT measurement. In order to check whether this method is reasonable or not, an experimental platform is built. And the result shows that this flow pattern identification system for the concentration measurement performs efficiently and accurately.
Keywords :
capacitive sensors; chemical variables measurement; computerised instrumentation; flow measurement; flow sensors; gas sensors; image reconstruction; image segmentation; image sensors; maximum entropy methods; particle swarm optimisation; phase measurement; pipe flow; radial basis function networks; two-phase flow; 2D maximum entropy threshold image segmentation method; CPSO algorithm; ECT flow regime identification technology; ECT measurement; RBF; chaos-particle swarm optimization algorithm; electrical capacitance tomography; electrode capacitance sensor; flow pattern identification system; gas-solid two-phase flow phase concentration measurement; gas-solid two-phase flow pipeline; image collection; image reconstruction; original hardware system; radial basis function network algorithm; Capacitance; Capacitance measurement; Electrodes; Fluid flow measurement; Image reconstruction; Image segmentation; Solids; 2-D Maximum Entropy Threshold; CPSO; ECT; capacitance sensor; gas/solid two-phase flow concentration measurement;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4673-5034-1
DOI :
10.1109/IMCCC.2012.310
