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Multichannel flow cross section detection device and detection method

A technology of flow cross section and detection device, which is applied to measurement devices, using ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of low measurement accuracy of flow cross section, and achieve the advantages of reducing calculation errors, large amount of ultrasonic information, and improving measurement accuracy. Effect

Pending Publication Date: 2022-02-11
HEBEI UNIVERSITY
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Problems solved by technology

[0010] The purpose of the present invention is to provide a multi-channel flow section detection device and detection method to solve the problem of low measurement accuracy of the flow section in the prior art

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  • Multichannel flow cross section detection device and detection method
  • Multichannel flow cross section detection device and detection method
  • Multichannel flow cross section detection device and detection method

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Embodiment Construction

[0048]The invention provides a multi-channel flow section detection device and detection method based on the principle of ultrasonic thickness gauge and multi-channel ultrasonic tomography technology. By designing an integrated measurement device with multiple ultrasonic probes used in conjunction with each other, the detection of The accurate modeling of the flow section provides a new scheme for the precise measurement of the flow section.

[0049] The present invention designs a multi-channel flow cross-section detection device based on the principle of an ultrasonic thickness gauge and multi-channel ultrasonic tomography technology, generates ultrasonic signals at the part close to the outside of the pipe wall, and receives the ultrasonic signals to the probe. In order to obtain relatively reliable data, in the embodiment of the present invention, a total of eight ultrasonic probes are arranged at equal intervals in the fluid flow section, and tomographic imaging technology...

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Abstract

The invention provides a multichannel flow cross section detection device and a detection method. N ultrasonic probes are uniformly arranged on the same cross section of the side wall of a pipeline, the N ultrasonic probes are connected with a single chip microcomputer through a channel control module, and the channel control module is used for controlling the ultrasonic probes to work or not; the single chip microcomputer is connected with an upper computer through a USB communication module. Through the N ultrasonic probes, the inner diameter of the pipeline can be measured according to the principle of an ultrasonic thickness gauge and an ultrasonic tomography technology, and then the area of the cross section of the pipeline can be calculated. On the basis of the ultrasonic tomography principle, an ultrasonic array is used for tomography. According to the method, the obtained ultrasonic information amount is large, the calculation method is advanced, the calculation error of the flow cross section is reduced, the measurement precision of the flow cross section is effectively improved, and a more accurate basis is provided for flow measurement.

Description

technical field [0001] The invention relates to the technical field of two-phase flow detection, in particular to a multi-channel flow section detection device and a detection method. Background technique [0002] At present, the flow cross-section has not been systematically studied, and the following thickness gauges are often used for the measurement of the flow cross-section: X-ray thickness gauge, film thickness gauge, magnetic coating thickness gauge, eddy current thickness gauge, ultrasonic gauge Thickness gauge, in addition, there is a laser thickness measurement method to measure the thickness. [0003] The principle of the X-ray thickness gauge is: X-ray itself has strong penetrability. When penetrating different obstacles, the penetrating strength is different, and the thicker the obstacle, the more obvious the X-ray attenuation , using this property to judge the thickness of the object according to the detected rays of different intensities, an X-ray thickness g...

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Application Information

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IPC IPC(8): G01B17/00G01B17/02
CPCG01B17/00G01B17/02
Inventor 方立德周琮苑欣悦韦子辉赵宁
Owner HEBEI UNIVERSITY
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