PROCEDURE FOR BLEEDING SECTIONS OF GAS PIPELINES IN MULTI-LINE SYSTEMS OF MAINS Russian patent published in 2011 - IPC F17D1/07 

FIELD: machine building.

SUBSTANCE: procedure consists in shutting off emptied section at its input, in directing gas through bridges to bypass of emptied section through parallel lines of gas line, in disconnection of emptied section at its output from parallel lines, in disconnection of all further located sections of line to nearest gas-transfer station from parallel lines, in so connecting emptied section and adjacent further located sections with inlet collector of supercharger of nearest gas-transfer station, in dropping pressure in emptied section and section adjacent to emptied one to level below pressure in inlet collector of nearest gas transfer station, in shutting off emptied section of gas line at output and in shutting off section of gas line adjacent to emptied section at input to input collector of nearest gas-transfer station, in pumping out gas from emptied section by mobile gas transfer devices into section adjacent to emptied section.

EFFECT: raised efficiency of bleeding sections of pipelines from gas with implementation of mobile gas pumping out devices.

6 cl, 4 dwg