Vertical rotational flow phase-splitting capacitance integrated water content measurement device

Abstract

The invention relates to a vertical rotational flow phase-splitting capacitance integrated water content measurement device. The vertical rotational flow phase-splitting capacitance integrated water content measurement device comprises an outer pipe wall and an inner electrode, wherein the inner wall of the outer pipe wall is a metal inner wall and serves as an outer electrode, the vertical rotational flow phase-splitting capacitance integrated water content measurement device is characterized in that the metal inner electrode is fixed at the middle part of the outer pipe wall, the metal inner electrode is wrapped with an insulating layer, a helical blade is further fixed at the peripheries of the insulating layer and the metal inner electrode, an inclined inlet is formed in the outer pipe wall, the tangential angle of the inclined inlet and the spiral lead angle of the helical blade are the same, so that a fluid enters a space between the helical blade and the outer pipe wall along the tangential angle, and the length of the inner electrode is the length of a capacitance measurement section.

Description

technical field [0001] The invention belongs to the technical field of wet gas two-phase flow flow measurement, and relates to a vertical swirling flow phase separation capacitor integrated water content measuring device. Background technique [0002] Moisture exists widely in various fields of nature and industrial production. Liquid phase volume fraction is one of the important parameters of moisture, and its accurate measurement not only directly affects the measurement accuracy of flow rate, but also has great significance for industrial production and scientific research. In practical applications, due to the complex and changeable gas-liquid two-phase flow, it is very difficult to accurately measure the volume fraction of the liquid phase. With the development of science and technology, tracer technology, ray technology, nuclear magnetic resonance technology and capacitance technology have all been applied to the measurement of water content. However, the sampling re...

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Problems solved by technology

The two parts of the device are separated, so the overall structure is relatively long; in addition, experiments have proved that when the gas phase flow rate is less than 10m / s and the liquid phase volume fraction is higher than 4%, it cannot guarantee that it will enter the measurement unit at the end of the spinning phase separation unit The stability of the final gas-liquid two-phase flow shape makes the error between the measured value of water content and the reference standard value given by the experiment increase from 0.5% to 2%.

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