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Multiphase flow imaging method based on gamma photon computer tomography imaging technology

A photonic computer and tomographic imaging technology, applied in the field of multiphase flow measurement, can solve problems such as signal aliasing and achieve high flexibility

Inactive Publication Date: 2017-10-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SSRB recombination is to recombine the data from different detection rings to the detection ring in the middle of the two detection rings. This recombination method will cause aliasing of signals in space.

Method used

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  • Multiphase flow imaging method based on gamma photon computer tomography imaging technology
  • Multiphase flow imaging method based on gamma photon computer tomography imaging technology

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Embodiment Construction

[0033] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] like figure 1 As shown, the flow field measurement device based on positron emission tomography includes a gamma photon detection ring 4, a computer 1 for recombining and reconstructing tomographic data, a fluid device 2 to be tested and a fluid pipeline 5 input to the fluid device. Firstly, the positron nuclide is marked on a certain phase material in the multiphase flow, and the marking method is flexibly adopted according to the actual situation. The gamma photon detector ring surrounds the multiphase flow equipment to be tested, and the detection angle is determined according to the requirements. The gamma photon detection ring 4 is connected to the computer 1, and the obtained data is processed by the computer 1. The positron nuclide will continuously release positrons, and an annihilation event of the positrons will release a pair of gamma photons with ...

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Abstract

The invention relates to a multiphase flow imaging method based on a gamma photon computer tomography imaging technology and belongs to the field of multiphase flow measurement. The multiphase flow imaging method comprises the following steps that 1, a marker is prepared, and a multiphase flow material is marked; 2, a fluid device and a detecting device run; 3, acquisition data is obtained, and a computer is utilized to perform data recombination and reconstruction; 4, a detection image is obtained. The method is not limited by fluid device materials and fluid properties and has higher flexibility, and different imaging structures algorithms can be flexibly adopted according to shapes of devices to be detected.

Description

technical field [0001] The invention relates to a multiphase flow imaging method based on gamma photon computed tomography technology, which belongs to the field of multiphase flow measurement. Background technique [0002] Multiphase flow refers to the process of flowing two or more different phase substances at the same time, and it is a kind of fluid form that widely exists in chemical industry, petroleum, energy, metallurgy and other industrial fields. The research on multiphase flow exists widely in various industrial fields, and it is of great significance to accurately identify and measure the flow pattern and flow state of multiphase flow. [0003] Multiphase flow includes gas-liquid, gas-solid, liquid-solid, and liquid-liquid two-phase flow, as well as three-phase flow such as gas-liquid-solid, gas-liquid-liquid, and multiphase flow of more than three phases. Compared with single-phase flow, the flow characteristics of multiphase flow are complex, and there are int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/02G06T11/00
CPCA61B6/025A61B6/52G06T11/005G06T2211/416
Inventor 刘角赵敏肖辉陈浩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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