Electrical resistance tomography-based gas-liquid two-phase flow measuring method and device
A technology of electrical resistance tomography and gas-liquid two-phase flow, which is applied in the direction of measuring devices, volume/mass flow generated by mechanical effects, and fluid flow detection by measuring pressure difference, and can solve the problem of small information and inability to integrate two-phase flow Real-time observation and description of characteristics, difficult problems, etc.
Inactive Publication Date: 2016-07-20
西安远景动力模拟技术有限公司
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Problems solved by technology
Compared with single-phase flow, due to the mass transfer and even chemical reactions between the phases at the phase interface, the two-phase flow is randomly variable in time and space, so that the flow such as the content of each phase, flow velocity, flow rate and overall velocity, flow rate, etc. The detection of parameters is more complex and difficult
So far, most of the existing detection technologies and methods are detection methods based on single-phase sensors, the amount of information obtained is small, and it is impossible to observe and describe the overall characteristics of the two-phase flow in real time
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[0045] A specific embodiment is used to further illustrate the principle and structure of the gas-liquid two-phase flow measurement method and device based on electrical resistance tomography technology proposed by the present invention. The method and device are used for measuring the content, speed and flow rate of each phase of air-water two-phase flow, as well as the overall average speed and flow rate. The composition and connection relationship of the components in the device and figure 1 same.
[0046] In specific implementation,
[0047] The cross section of the measuring pipe (1) is circular, the length is 1m, the inner diameter is 50mm, the wall thickness is 10mm, and the material is plexiglass. Place horizontally. Along the circumferential direction, there are 16 mounting holes with a diameter of 3mm;
[0048] The space-sensitive array (2) is composed of 16 metal titanium electrodes, the electrodes are cylindrical and have a diameter of 3mm, and are evenly insta...
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The invention discloses an electrical resistance tomography-based gas-liquid two-phase flow measuring method and a device. Based on the method and the device, the phase content, the speed and the flow of each of the gas-phase flow and the liquid-phase flow can be recognized. Meanwhile, the overall average speed and the overall flow of the gas-phase flow and the liquid-phase flow can be recognized. The device comprises a measuring pipe (1), a spatially sensitive array (2), a sensitive electric field excitation unit (3), a data acquisition and processing system (4), an image reconstruction system (6), a control computer (5) and a differential pressure flowmeter (7).
Description
technical field [0001] The invention relates to the field of fluid measurement, in particular to a gas-liquid two-phase flow measurement method and device based on electrical resistance tomography technology. The method and device can identify the content, speed and flow rate of each phase of the gas-liquid two-phase flow, as well as the overall average speed and flow rate. Background technique [0002] There are two-phase flow phenomena widely in engineering, among which gas-liquid two-phase flow is the most common. For example, convection in oil pipelines, around turbine rotors, and in atmospheric clouds are all gas-liquid two-phase flows. It is of great significance for related research, design and production to measure the flow parameters of two-phase flow and understand its characteristics and changing rules. Compared with single-phase flow, due to the mass transfer and even chemical reactions between the phases at the phase interface, the two-phase flow is randomly v...
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IPC IPC(8): G01D21/02G01N27/08G01F1/36
Inventor 路明
Owner 西安远景动力模拟技术有限公司