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Ultrasonic Doppler poly-phase flow velocity distribution detecting device

A technology of flow velocity distribution and multiphase flow, applied in the direction of fluid velocity measurement, velocity/acceleration/shock measurement, measuring devices, etc., can solve the problems of lack of effective and intuitive means, and achieve fast measurement speed, low cost and simple structure Effect

Active Publication Date: 2017-08-29
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is still a lack of effective and intuitive means for the reconstruction of the two-dimensional flow velocity distribution of multiphase flow

Method used

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  • Ultrasonic Doppler poly-phase flow velocity distribution detecting device
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  • Ultrasonic Doppler poly-phase flow velocity distribution detecting device

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Embodiment Construction

[0020] The following detailed description of the steps of manufacturing and operating the present invention is intended to be described as an embodiment of the present invention, and is not the only form that can be manufactured or utilized. Other embodiments that can achieve the same function should also be included within the scope of the present invention .

[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 A schematic diagram of the overall structure of the device of the present invention is described, including a measured pipeline 1, a flange 2 for fixing the device, an ultrasonic sensor array 3, an ultrasonic signal generation and detection unit 4, an ultrasonic Doppler signal analysis unit 5, a fluid velocity field reconstruction unit 6 and Output and display unit 7. The ultrasonic sensor array is composed of multiple groups of ultrasonic probes, each group of ultrasonic prob...

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Abstract

The invention relates to an ultrasonic Doppler poly-phase flow velocity distribution detecting device, which is used to measure the flow velocity distribution of the cross section of the fluid inside a to-be-detected pipeline. The device comprises an ultrasonic sensor array and an ultrasonic signal generating and detecting unit. The ultrasonic sensor array consists of a plurality of ultrasonic probes distributed uniformly on the positions of the same cross section of the to-be-detected pipeline and each ultrasonic probe is structured by two ultrasonic transducers with sound wedge. Between the two ultrasonic transducers, a sound separation layer is placed to isolate sounds. One of the ultrasonic transducers serves as an ultrasonic emission transducer and is fixedly arranged on the surface of the transparent wedge in parallel to the axial direction of the pipeline while the other serves as an ultrasonic reception transducer and is fixedly inclined on the surface of the transparent wedge of the axial direction of the pipeline. When the device measures, in a certain order, the emission transducers in the ultrasonic probes are excited in succession, and under each excitation, all the reception transducers receive the ultrasonic echo signals at the same time, and under the same cross section and through multi-direction excitation, the multi-direction synthesized ultrasonic Doppler frequency shift projection information about the flow velocity of the fluid inside the testing pipeline can be obtained.

Description

technical field [0001] The invention belongs to the technical field of fluid measurement, and in particular relates to a multiphase flow velocity distribution detection device based on the ultrasonic Doppler effect. technical background [0002] A phase in a multiphase flow is defined as the existing form of a substance, that is, gaseous, liquid or solid, and usually refers to a flow in which two or more substances exist at the same time. Multiphase flow widely exists in industrial production and daily life, such as nuclear energy, oil and gas exploration and transmission, chemical industry, refrigeration, medicine, food and other modern engineering fields and equipment. A deep understanding of the characteristics of multiphase flow can monitor the production process, Management, analysis and design, as well as ensuring reliable operation of the device and improving production efficiency are of great significance. Due to the complexity and uncertainty of the multiphase flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/24
CPCG01P5/241
Inventor 谭超刘伟玲董峰
Owner TIANJIN UNIV
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