METHOD OF DETERMINING LIQUID OR GAS LEAKAGE POINT IN UNDERGROUND PIPELINE AND DEVICE FOR REALISING SAID METHOD Russian patent published in 2011 - IPC G01M3/22 G01V3/16 

FIELD: physics.

SUBSTANCE: device has a synchroniser 1, transmitters 2.1-2.4, antenna switches 3.1-3.4, transceiving antennae 4.1-4.4, receivers 5.1-5.4, processing units 6.1-6.4, field of vision switch 7, strobe pulse generator 8, indicator 9, thermal image sensor 10, television sensor 11, receiving unit 12, receiving antenna 13, motor 14, reference generator 15, first heterodyne frequency synthesiser 16, first intermediate frequency amplifiers 18, 26-29, second heterodyne 19, mixers 17, 20, 22-25, second intermediate frequency amplifier 21, multipliers 30-33, 38, 40, narrow band-pass filters 34-37, 42, 44, delay lines 39, 41, phase detectors 43, 45, phase metres 46-49, correlator 50, controlled delay unit 51, multiplier 52, low-pass filter 53, optimal control 54, range indicator 55, recording and analysis unit 56. The transceiving antennae 4.1-4.4 are placed on ends of helicopter main rotor blades. The receiving antenna 13 is placed over the rotor head of the helicopter. The motor 14 is kinematically linked to the helicopter rotor and reference generator 15.

EFFECT: high accuracy of determining route of a main pipeline and distance to the pipeline.

1 tbl, 2 dwg