Internal and external composite array sensor for detecting process parameter of fluid in pipeline

Abstract

The invention belongs to the technical field of fluid measurement, and relates to an internal and external composite array sensor for detecting a process parameter of fluid in a pipeline. The internal and external composite array sensor comprises an external electrode array and an internal electrode array, wherein external electrodes are fixed on the inner wall of the pipeline in a circumferential distribution manner; internal electrode are fixed on a supporting rod transversely passing through the internal part of the pipeline in a linear distribution manner; the supporting rod is made of a non-conductive material; and two ends of the supporting rod are fixed on the pipeline. The internal and external composite array sensor has the advantages of acquiring projections of distribution information of substances in the pipeline at more positions, improving the intensity and the uniformity of a sensitive field and increasing the information content of a fluid measurement system.

Description

technical field [0001] The invention relates to the technical field of fluid measurement, in particular to a sensor for fluid process parameter measurement. Background technique [0002] Multiphase flow is a kind of fluid form that is ubiquitous in nature and industrial production. For example: oil / water two-phase flow, oil / gas two-phase flow, oil / gas / water three-phase flow often encountered in the process of oil exploitation; pneumatic material transportation and natural gas transportation in metallurgy and energy fields; chemical and pharmaceutical fields The chlorination process, hydrogenation process, diffusion process, and crystallization process; the fermentation process, mixing process, and sewage treatment process in the fields of food and environmental protection are all closely related to multiphase flow problems. Compared with single-phase flow, due to the interface effect and relative velocity between the phases, the phase interface of multiphase flow varies ran...

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Problems solved by technology

However, in the previous research work, the internal electrodes were based on the known structures existing inside the measured field (such as: the stirrer in the mixing process), and were generally distributed in the center of the measured field, and the number was very limited. Generally, there are no more than 4, and the distribution locations are relatively concentrated

This limitation in position and number makes it impossible for the previous internal electrodes to improve the spatial resolution of each area in the measured field, and the ability to improve the measurement accuracy is very limited.

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