Measuring apparatus for multiphase fluid imaging based on bimodal silk screen and measuring method thereof

An imaging measurement and multiphase flow technology, applied in the direction of material resistance, material capacitance, etc., can solve the problems of low image spatial resolution, complex image reconstruction process, poor real-time performance, etc., achieve short acquisition time, high imaging accuracy, and improve efficiency Effect
CN101650328AActive Publication Date: 2010-02-17TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2010-02-17

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Abstract

The invention belongs to the technical field of multiphase fluid imaging and relates to a bimodal (conductance and capacitance) sensing imaging device based on a silk screen. A sensor consists of a plurality of parallel leads with insulated or noninsulated outer surfaces in the longitudinal direction, and the leads with insulated or noninsulated outer surfaces are distributed alternatively; the sensor consists of a plurality of parallel leads in the transverse direction, and each lead is formed by connecting small sections with insulated or noninsulated outer surfaces in series. The transverse leads are connected to an excitation signal generator, and the longitudinal leads are connected to a measuring circuit. By measuring conductance and capacitance of the leads that are mutually perpendicular to each other, the invention determines the distribution information of each phase of the multiphase fluid on the whole pipe section and obtains the spatial distribution of conductivity and dielectric coefficient of the fluid or the powder in a same tangent plane simultaneously without using a complex reconstruction algorithm.
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Description

Technical field

[0001] The invention belongs to the technical field of imaging of multiphase fluids, and relates to a dual-mode imaging system based on a silk screen. Background technique

[0002] The phenomenon of multiphase flow is widely present in modern engineering fields such as petroleum, chemical industry, energy and power. The online display and identification of multiphase flow patterns are of great significance to the monitoring and fault diagnosis of the production process. At the same time, in some fields of fluid measurement, the ability to accurately image the flow cross-section of multiphase fluid in real time is an urgently needed technology for many applications in the industry.

[0003] Process tomography technology takes multiphase flow as the main research object, and can obtain the two-dimensional / three-dimensional temporal and spatial local micro-distribution information of multiphase fluid. This is a multiphase flow with complicated and changeable flow char...

Claims

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