DEVICE FOR MONITORING DANGEROUS SECTION OF MAIN GAS PIPELINE Russian patent published in 2008 - IPC F16L17/00 

FIELD: pipeline transport.

SUBSTANCE: device comprises video camera provided with a unit for infrared illumination that are optically synchronized with the dangerous section of the main pipeline, static pressure gage for measuring pressure of transported gas in the main pipeline, vibration pickup mounted on the main pipeline, two pickups of acoustic noise, four amplifiers, multiplexer analogue-digital converter, two threshold units, microprocessor, and radio modem. The outputs of the static pressure gage, vibration pickup, first and second pickups of acoustic noise are connected with the inputs of the first, second, third, and fourth amplifiers. The outputs of the first, second, and third amplifiers are connected with the inputs of the multiplexer whose output is connected with the input of microprocessor through the analogue-digital converter. The output of the microprocessor is connected with the control input of the multiplexer and first control input of the radio modem. The output of the fourth amplifier is connected with the second control input of the radio modem through the first threshold unit. The device additionally has narrow-band microphone, harmonic acoustic emitter, unit for processing Doppler signal and photodetector. The starting input of the harmonic acoustic emitter is connected with the output of the first threshold unit, and electric output is connected with the first input of the unit for processing Doppler signal whose first and second outputs are connected with the third and fourth control inputs of the radio modem, respectively, and second output is connected with the starting input of the video camera, The second output of the unit for processing Doppler signal is connected with the output of the narrow-band microphone, and output of the photodetector is connected with the starting input of the unit of infrared illumination through the second threshold unit.

EFFECT: enhanced reliability and safety.

4 cl, 4 dwg