FIELD: physics.
SUBSTANCE: perform forced excitation of acoustic oscillations in the pipeline, on which two acoustic sensors are located, located at a given distance from each other along the length of the pipeline; reception of acoustic impulse signals by the first and second acoustic sensor with fixation of the arrival time of acoustic pulses first to the first acoustic sensor - near, and then - to the second acoustic sensor; the determination of the average group velocity of sound propagation of the acoustic signal in the pipeline, the reception of the acoustic signal from the leak by the first and second acoustic sensors, followed by processing of the received signal, and determining the delay time of arrival of the signal to the sensors from leakage, determining the distance from the leak in the pipeline from one of the sensors based on a certain time delay of the signal arrival to the sensors from the leak and the measured average group sound velocity in the pipeline. The device consists of two channels, each of which contains an acoustic sensor, an amplifier, a filter, a signal transmission means, a signal receiving means, an ADC, and also a common processing unit, an indicator. Also, the device comprises an acoustic signal generator, a means for generating acoustic pulses.
EFFECT: increasing the accuracy and reliability of locating leaks in the pipeline.
15 cl, 2 dwg
