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EIT tomography-based different fluid model identification and pipe blocking positioning method

A fluid model and tomography technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of inability to effectively reduce transportation costs, low positioning accuracy, etc., to prevent the reduction of transportation efficiency, realize convenience, and real-time accuracy. The effect of positioning

Active Publication Date: 2019-05-24
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] However, in the prior art, no one has identified different flow patterns such as laminar flow, bubbly flow, core flow, and circular flow in the pipeline. It cannot effectively solve the problem of reduced transportation efficiency due to pipe blockage, and cannot effectively reduce transportation costs

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  • EIT tomography-based different fluid model identification and pipe blocking positioning method
  • EIT tomography-based different fluid model identification and pipe blocking positioning method
  • EIT tomography-based different fluid model identification and pipe blocking positioning method

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Embodiment Construction

[0050] Such as figure 1 As shown, the different fluid model identification and plugging localization method based on EIT tomography of the present invention, this method comprises the following steps:

[0051] Step 1. Arrange multiple sets of electrodes axially on the outer wall of the fluid delivery pipeline, apply electric excitation to the fluid delivery pipeline, measure the boundary voltage sequence, and transmit it to the computer; the computer processes the measured boundary voltage sequence to obtain the conductivity distribution Sequence, the conductivity distribution sequence is restored to a matrix form to obtain an EIT image; wherein, each group of electrodes is composed of a plurality of electrodes uniformly arranged along the radial direction of the fluid delivery pipeline;

[0052] In this embodiment, each group of electrodes in Step 1 is composed of 8 or 16 electrodes uniformly arranged along the radial direction of the fluid delivery pipeline.

[0053] The ge...

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Abstract

The invention discloses an EIT tomography-based different fluid model identification and pipe blocking positioning method, which comprises the following steps of: 1, applying electric excitation to afluid conveying pipeline, measuring to obtain a boundary voltage sequence, and processing the measured boundary voltage sequence by a computer to obtain an EIT image; 2, inputting the EIT image into aTensorflow fluid model identification network by the computer, and identifying a core flow model, a laminar flow model, a bubble flow model and a circulation model; 3, the computer calculates the minimum error value of each fluid model; 4, the computer calls a fluid model optimization module to optimize the fluid model to obtain an optimized reconstructed image of each fluid model; Fifthly, the blocked pipe blocks are positioned through a computer; and sixthly, the computer judges the pipe blocking degree. The pipe blocking device is novel and reasonable in design, capable of accurately positioning in real time and judging the pipe blocking degree, capable of improving the conveying efficiency and reducing the conveying cost, high in practicability and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of EIT tomography, and in particular relates to a method for identifying different fluid models and locating blocked pipes based on EIT tomography. Background technique [0002] In industrial production, there will be pipe blockage during the process of pipeline transportation of fluids. Scholars have studied the method of using electrical impedance imaging for the location of pipe blockage. Electrical Impedance Tomography (EIT) is a method of imaging to obtain objects The technology of internal medium information, different media have different conductivity, external excitation is applied to the surface of the object, and the internal conductivity distribution of the object is obtained according to the measurement data, and then the image of the internal medium distribution of the object is calculated and reconstructed. For example, Wang Qi and others added the low-rank characteristics of the dynamic impeda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/70
Inventor 秦学斌纪晨晨陈菲王卓李瑞琪刘浪王湃张波王美赵玉娇张小艳郇超邱华富
Owner XIAN UNIV OF SCI & TECH
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