METHOD FOR NON-INVASIVE DETERMINATION OF THE VOLUMETRIC FLOW RATE OF LIQUID AND GAS IN A PIPELINE AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC G01F1/00 G01F1/704 G01F1/20 G01F22/00 

FIELD: gas industry.

SUBSTANCE: method for non-invasive determination of the volumetric flow rate of liquid and gas in a pipeline is proposed. On the outer surface of the pipe, a set of sensors is installed in series, capable of detecting vortex disturbances in the flow and generating signals about them. The hydrodynamic component of pulsating pressure extracted from turbulent vortices is used as a useful signal, the signal is then filtered, first removing the long-wavelength acoustic components of pressure pulsations of turbulent vortices, then filtering out the high-frequency component of the signal. The rest of the signal is processed. Then the speed of convection of vortex disturbances inside the flow is determined. Next, the volumetric flow rate of the liquid is calculated from the speed of convection of vortex disturbances. As sensors, elastic deformation sensors are used, made with the possibility of restructuring them to filter waves of different lengths. The signals taken from the sensors are amplified before filtering. After filtering, the signal containing the values ​​of pressure fluctuations of turbulent eddies in the convective region is subjected to frequency-wave processing using the k-ƒ curve. Also proposed is a device for non-invasive determination of the volumetric flow rate of liquid and gas in the pipeline.

EFFECT: increase in the accuracy of determining the volumetric flow rate of liquid and gas in the pipeline is achieved.

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