FIELD: transportation.
SUBSTANCE: on both sides of repaired section of pipe pits are dug up, pipeline is stripped for the length determined from condition of assumed sleeve bending radius (usually R>5d, where d - diameter of pulled flexible pipeline 1). Inner surface of pipeline is cleared of deposits and rust. Cable is passed through pipeline which cable by one end is attached to removable head and its second end is connected to traction device for instance to hoist. Traction device with the help of cable pulls flexible corrugated pipeline of smaller diameter into pipeline. Braiding reliably protects corrugated shell against possible damages from friction against pipeline walls during pulling. End sections of pipeline destroyed part are rigidly connected with end sections of intact part of repaired pipe by means of compensating device.
EFFECT: enhancement of pipeline reliability.
2 dwg
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