METHOD FOR DETECTING LINEAR COORDINATE OF LEAK IN GAS PIPELINE Russian patent published in 2023 - IPC F17D5/06 G01M3/24 

FIELD: pipeline transport.

SUBSTANCE: invention can be used to improve the accuracy of detecting leaks in gas pipelines. The method includes installing acoustic sensors, temperature and pressure sensors on a gas pipeline, recording and measuring acoustic signals propagating inside the gas pipeline, analysing acoustic signals from the sensors and selecting an acoustic sensor that shows the maximum amplitude of the acoustic signal as a marker sensor closest to the leak, measurement of temperature, pressure, gas density and finding the speed of sound in gas, finding the difference in the time of arrival of acoustic signals to acoustic sensors closest to the upstream and downstream of the gas relative to the leak. In the method, the boundaries and length of the controlled section of the gas pipeline where the leak occurred are found, the component composition of the gas, the average current gas temperature, the average current gas pressure and the average current speed of sound in the gas in the controlled section of the gas pipeline where the leak occurred are found, and the linear coordinate of the leak on the gas pipeline is found based on the average current speed of sound in the controlled section of the gas pipeline where the leak occurred, found on the basis of the component composition, the average current temperature and the average current gas pressure in the controlled section of the gas pipeline where the leak occurred.

EFFECT: in increasing the accuracy of determining the current speed of sound propagation throughout the controlled section of the gas pipeline, based on the measured values of temperature, pressure and gas composition, which makes it possible to determine the linear coordinates of leaks in the gas pipeline with high accuracy.

7 cl, 4 dwg, 2 tbl