SYSTEM FOR MONITORING GAS LEAKAGE FROM MAIN GAS PIPELINES Russian patent published in 2017 - IPC G08B25/10 F17D5/02 

FIELD: oil and gas industry.

SUBSTANCE: system for monitoring gas leakage from the main gas line can be used in operation and monitoring of the technical condition of main pipelines. In the system for gas leakage monitoring, the leakage control is carried out from a vehicle moving along the route of the gas pipeline. The vehicle has a laser device with frequency coinciding with the absorption spectrum of gas transported along the gas line and optically matched with the photodetector connected to the amplifier-converter, which output is connected to the vehicle computer to which a first receiving-transmitting device is connected, by means of which the radio connection is realized with the receiving-transmitting device, the computer and the monitor of the control center. The vehicle is provided with alarm of the signalling device, a video camera connected to the computer through multiplexer, and the four ones form a circular view system, and the two ones form stereo observation. A second receiving-transmitting device is also installed on the vehicle and controlled by the computer to perform radio communication via a separate radio channel with three stationary receiving-transmitting devices which are located along the perimeter of the controlled section of the gas pipeline route for determination of actual coordinates of the vehicle. The output of the receiving-transmitting device is connected to a converter of time intervals to digital code which is delivered to the computer for its re-counting to the current distance between the vehicle and the three-stationary receiving-transmitting devices.

EFFECT: possibility to perform control of gas leakage from the gas pipeline along the route of its location in automatic mode without participation of human operator, at any time of year and day, under any meteorological conditions with high accuracy.

2 cl, 3 dwg