High temperature electrical capacitance tomography sensor and production method thereof

Abstract

The invention discloses a high temperature electrical capacitance tomography sensor and a production method thereof. The sensor can be applied to a 300 DEG C high temperature environment. The sensor includes high temperature-resistant array-distributed measuring electrodes, a shaft end shielding electrode, an insulation and isolation layer, an outer shield cover and a signal transmission line, wherein the array distribution electrodes comprise N measuring electrodes; and the signal transmission line comprises a high temperature section and a normal temperature section and comprises a cable core, an insulating layer and a shield silk screen. In the invention, the defect of no resistance of traditional sensors to a high temperature is improved, the problem of difficulty in arrangement of electrodes in the high temperature environment is solved, the electrodes and the outer shield cover are isolated and fixed by a high temperature-resistant insulating material, and signals of the measuring electrodes are led out through the high temperature signal transmission line, so an effective means is provided for researching gas and solid two-phase distribution, the fluidization characteristics and relevant reaction monitoring in the high temperature environment, and the application field of an electrical capacitance tomography technology is widened.

Description

technical field [0001] The invention belongs to the field of sensor design, and in particular relates to a capacitance tomography sensor applied in a high-temperature environment and a preparation method thereof. Background technique [0002] The development of electrical capacitance tomography (ECT) technology began in the 1980s. It is a process imaging technology that combines medical tomography and modern measurement technology. Its basic working principle is that components or concentrations in the measured object occur When it changes, it will cause a change in the dielectric constant, which will eventually lead to a change in the capacitance value measured by the capacitive sensor. Capacitance tomography mainly uses a multi-electrode array capacitive sensor to measure multiple pairs of capacitance values ​​that can reflect the distribution of the dielectric constant of the mixture. Then, the image reconstruction algorithm is used to realize the two-dimensional visuali...

AI Technical Summary

Problems solved by technology

At present, there are few relevant patent reports on high-temperature ECT sensors, and there is a need in this field for ECT sensors that can be used in high-temperature environments of 300 °C

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