Gas-solid two-phase flow flow parameter measurement method, electronic equipment and storage medium

Abstract

The invention discloses a gas-solid two-phase flow flow parameter measurement method, electronic equipment and a storage medium, and the method comprises the steps: obtaining a capacitance vector of a to-be-measured region, and reconstructing the real dielectric constant distribution of the to-be-measured region; on the basis of the reconstructed real dielectric constant distribution, particle concentration distribution and particle moisture are obtained under the assumption of particle moisture; obtaining a complex dielectric constant distribution condition of the microwave frequency band measurement area based on the particle concentration distribution and the particle moisture; the microwave attenuation condition under the complex dielectric constant distribution condition is calculated; setting a contrast value, and correcting the assumed particle moisture to meet the contrast value according to the comparison between the microwave attenuation obtained by calculation under the complex dielectric constant distribution condition and the microwave attenuation obtained by actual measurement; and taking the particle moisture meeting the contrast value as the final particle moisture. According to the electrical capacitance tomography and microwave method fused measurement method provided by the invention, the measurement precision is improved, and the measurement range is widened.

Description

technical field [0001] The invention relates to the technical field of gas-solid two-phase flow measurement, in particular to a method for measuring flow parameters of gas-solid two-phase flow. Background technique [0002] Gas-solid two-phase flow is mainly a mixture of gas and solid phases, and is one of the common multiphase flow systems. Gas-solid two-phase flow exists widely in various industrial production and machinery manufacturing. For example, in the pharmaceutical industry, the processes of crushing, mixing, drying, granulating, coating and tableting are all carried out in a fluidized bed, which is a flow process of gas-solid two-phase flow. At the same time, gas-solid two-phase flow also has a wide range of applications in the energy and chemical industries, such as the gasification of coal in the gas industry, which is also a typical gas-solid two-phase flow application. With the wide application of gas-solid two-phase flow, the demand for measuring flow param...

AI Technical Summary

Problems solved by technology

[0008] At present, although the joint measurement technology of electrical capacitance tomography and microwave has made some preliminary developments, the existing joint measurement technology generally uses a variety of sensors to complement each other, rather than integrating multiple measurement technologies, and this technology has not yet been developed. Sophisticated Measurement System

The existing ECT and microwave combined measurement technology is to use electrical capacitance tomography and microwave tomography to reconstruct the wet particle concentration distribution at the same time. The imaging effect of electrical capacitance tomography is better, but the imaging effect of capacitance is saturated when the water is high. Poor, and microwave tomography can still be used under higher particle moisture content, so microwave imaging is used when high moisture content, through the combination of the two, different measurement techniques for different moisture can be used for large particle moisture changes particle flow characteristics in the range of

Although this multi-sensor integration aims to improve the measurement range, each sensor still works independently based on its own principles and characteristics. It does not improve the measurement accuracy of a single sensor, and there is usually a problem of inconsistency in sensitive spaces.

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