METHOD FOR REPAIRMENT OF MAIN GAS PIPELINE AND MOVABLE INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2022 - IPC F16L55/18 F26B7/00 F17D3/12 

FIELD: transportation.

SUBSTANCE: group of inventions relates to gas transport; it can be used in repairment of the main gas pipeline. In a method for repairment of the main pipeline, a pipeline section to be repaired is disconnected, coils are cut out before and after the defective section, free ends of the disconnected section are sealed with power plugs. One of ends of the pipeline with the defective section is connected to a movable installation, an inner cavity of the pipeline with the defective section is blown with air, while drying it and removing moisture from air. The movable installation is disconnected from the pipeline with the defective section, released ends are sealed. After repairment of the defective section, the mentioned ends are depressurized, and the movable installation is connected to one of them, the inner cavity of the repaired pipeline is blown with air, while drying it and removing moisture from air. The end of the repaired section is disconnected from a transition air duct, free ends of the disconnected section are released from power plugs, and the pipeline with the repaired section is connected to it.

EFFECT: technological capabilities are expanded, reduction in a flow rate of natural gas is provided with simultaneous reduction in the cost of repairment and reduction in a negative effect on the environment.

6 cl, 7 dwg