METHOD OF LOCATING MAIN PIPELINE LEAKS Russian patent published in 2012 - IPC G01M3/24 F17D5/06 

FIELD: physics.

SUBSTANCE: in compliance with this invention, acoustic transducers are made up of a set of hollow cylindrical piezoelements with acoustically soft screen that features active surface of 300×152 mm. Said pipeline accommodates in-pipe measurement module also provided with acoustic transducers made up of parametric transducer consisting of microprocessor, pumping signal generator, parametric emitting channel and receiving channel. Said emitting channel comprises pumping signal generator and multielement mosaic antenna. Receiving channel comprises antenna made up of a grid of piezo ceramic cylindrical sound n-receivers each individually sealed and secured on the plate equipped with acoustic shield, n-receivers arranged nearby and shifted relative to each other in vertical and horizontal planes. Antenna casing is covers by sound conducting membrane. Measurement module is arranged on remote tool and connected via hydroacoustic channel with radio channel of registered acoustic signal transmission. Note here that in-pipe measurement module represents a tool with platformless inertial navigation system incorporating magnetoresistance magnetometer and control and stabilisation system connected via hydroacoustic channel with radio channel of registered acoustic signal transmission.

EFFECT: higher validity.

3 dwg