Multi-blade eddy flow phase-splitting capacitor water content measuring device

Abstract

The invention relates to a multi-blade eddy flow phase-splitting capacitor water content measuring device. The multi-blade eddy flow phase-splitting capacitor water content measuring device comprisesan eddy flow phase-splitting segment and a capacitor measuring segment; the eddy flow phase-splitting segment comprises a spiral blade support rod, more than two spiral blades distributed on the periphery of the spiral blade support rod, and an external tube wall; and the capacitor measuring segment comprises a metal inner core, and an insulating layer and an external metal tube wall which are used for coating the periphery of the metal inner core.

Description

technical field [0001] The invention belongs to the technical field of flow measurement of gas-liquid two-phase flow, and relates to a horizontally installed multi-blade flow-guiding swirl phase-separation capacitor water content measuring device. Background technique [0002] Gas-water two-phase flow exists widely in petroleum, chemical industry, energy and other fields, and the accurate measurement of its water content is of great significance. At present, the water content measurement methods mainly include ray technology, microwave technology, electrical (resistance, capacitance) technology, differential pressure technology, etc. In recent years, due to increasingly stringent safety management requirements, the use of non-radioactive technologies at home and abroad has gradually become the mainstream. [0003] Among the non-radioactive water content measurement technologies, the capacitance method has a long history, simple principle, and convenient maintenance. The dis...

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Problems solved by technology

[0010] Chinese patent application 2017 1 0465819.9 and Chinese patent application 2017 1 0465822.0 proposed a device that can improve the capacitive sensor being affected by the flow pattern and measure the water content of the capacitor by diversion type swirl phase separation, but because the device is designed for a single helical blade, and Vertical installation will lead to unsatisfactory swirling effect when the flow rate of two-phase flow is low

[0011] To sum up, according to the analysis of the research status of the phase holdup measurement by the capacitance method, it can be seen that domestic and foreign researchers have carried out a lot of research work on the capacitor structure and gained valuable experience. However, the response of the capacitance sensor still strongly depends on Due to the spatial distribution of the dispersed phase medium, the measurement results of the phase holdup are all affected by the flow structure

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