Annular space double-sensor conducting probe for flow parameter measurement of two-phase flow

A technology of annular space and flow parameters, applied in the direction of volume/mass flow generated by electromagnetic effect, which can solve the problem of low spatial resolution and achieve the effect of high-resolution characteristics

Inactive Publication Date: 2016-04-13
TIANJIN UNIV
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Problems solved by technology

[0004] Aiming at the shortcomings of the current two-phase flow conductivity sensor that the output response is significantly affected by the fluid motion structure and the spatial resolution is low, the purpose of the present invention is to provide an annular space dual-sensing conductivity probe for the measurement of two-phase flow flow parameters

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  • Annular space double-sensor conducting probe for flow parameter measurement of two-phase flow
  • Annular space double-sensor conducting probe for flow parameter measurement of two-phase flow
  • Annular space double-sensor conducting probe for flow parameter measurement of two-phase flow

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Embodiment Construction

[0029] The annular space dual-sensing conductance probe of the present invention is designed based on the principle of electrical sensitivity. Aiming at the non-uniform distribution and random motion characteristics of the two-phase flow in the vertical pipe, the fluid is forced to flow in the annular space by placing an insulating insert with a variable diameter in the center of the pipe. flow. It aims to use the distributed high-resolution characteristics of the fluid in the annular space to realize the measurement of the phase separation holdup (ratio of the phase separation volume to the total fluid volume) of the two-phase flow by using the annular space separation rate sensor; at the same time, use the annular space correlation velocity sensor Realize two-phase flow related velocity measurement; finally, based on the phase separation ratio and related velocity measurement results, establish the total flow measurement model and drift velocity model to realize the two-phase...

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Abstract

The present invention relates to an annular space double-sensor conducting probe for flow parameter measurement of two-phase flow. The annular space double-sensor conducting probe is composed of three portions including a pipeline center variable diameter insulation insertion body, annular space split-phase holdup sensors, and annular space correlation velocity measurement sensors. The pipeline center variable diameter insulation insertion body is fixed in the center of a vertical measurement pipeline to force the two-phase flow fluid to flow in annular space between an external surface of the pipeline center variable diameter insulation insertion body and an inner wall of the vertical measurement pipeline, and the variable diameter insulation insertion body is formed by three sections of a small-diameter section, a transition section and a large-diameter section successively from bottom to top. The split-phase holdup sensors are formed by four pairs or more than four pairs of arc-shaped electrodes, and each pair of arc-shaped electrodes is uniformly distributed on the periphery of the inner wall of the vertical measurement pipeline. The annular space correlation velocity measurement sensors are formed by two pairs of annular electrodes fixed on the surface of the small-diameter section of the variable diameter insulation insertion body. The annular space double-sensor conducting probe is advantaged by high measuring sensitivity.

Description

technical field [0001] The invention relates to a sensor for flow parameter measurement of two-phase flow. Background technique [0002] Two-phase flow phenomena widely exist in traditional and emerging industries such as petroleum engineering, chemical engineering, metallurgical engineering, nuclear engineering, aviation and aerospace engineering. Gas-liquid two-phase flow refers to the mixed flow system of gas phase and liquid phase incompatible substances. Due to the differences in physical properties such as density and viscosity among the components in gas-liquid two-phase flow, under the influence of many factors such as flow rate, pressure, gravity and pipeline shape, the measurement of flow parameters of gas-liquid two-phase flow is very difficult. difficulty. The total flow rate and phase-separated flow rate are important flow parameters in the gas-liquid two-phase flow industrial application system, and its accurate measurement is of great significance for the me...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/56
CPCG01F1/56
Inventor 翟路生金宁德边鹏
Owner TIANJIN UNIV
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