METHOD FOR DETERMINING THE LINEAR COORDINATE OF THE PLACE OF OCCURRENCE OF A LEAK IN A PIPELINE Russian patent published in 2023 - IPC F17D5/06 G01M3/24 

FIELD: pipeline transport.

SUBSTANCE: invention relates to pipeline transport and can be used to diagnose the technical condition of the main pipeline and other pipelines. A method for determining the linear coordinate of a leak, including the registration of acoustic signals by acoustic sensors installed on the pipeline, the transmission of acoustic signals via wired or wireless communication to the controllers and then to the server, where, based on the analysis of the amplitudes of the acoustic signals, the two largest amplitudes are detected, which are taken as amplitudes two adjacent sensors closest to the leak, and calculate the distance x from the acoustic sensor located upstream of the leak to the leak by the formula x=(ln(p2/(p1*k²))+ α⁺*L)/ (α⁺+ α^–), where p1 is the acoustic signal amplitude of the leak, measured by an acoustic sensor located upstream of the product relative to the leak; p2 is the amplitude of the acoustic signal of the leak, measured by an acoustic sensor located downstream of the product relative to the leak; k is the coefficient of convective amplification, calculated by the formula: k = (1 + v/c)²/(1 – v/c)², where v is the velocity of the product in the controlled section of the pipeline; c is the speed of sound in the product at the controlled section of the pipeline, L is the distance between adjacent acoustic sensors relative to the leak location; α⁺ is the attenuation coefficient of the leak signal with distance when this signal propagates against the product flow; α^– is the attenuation coefficient of the leak signal with distance when this signal propagates along the product flow, and then the linear coordinate S of the leak occurrence is calculated by the formula: S= b+x, where b is the linear coordinate of the acoustic sensor located upstream of the leak; x is the distance from the acoustic sensor, located upstream of the leak, to the leak.

EFFECT: improving the accuracy of determining the location of a leak in a pipeline.

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