Pipe interior repairing apparatus of resin coating type and the method of repairing pipe interior by using the same

摘要

This invention relates to a method and an apparatus for repairing the pipe inner surface by resin coating. A pipeline inner wall repair device (A) is movable in the pipeline (13) and has a rubber tubular body (5) which is expanded by supply of compressed air and is pressed against the inner surface of pipeline (13), a heater (7) for heating said rubber tubular body (5) and a thermo-sensor (8). After a mending material (M) is attached to the outer circumferential surface of the rubber tubular body (5), the repair device (A) is moved to a broken part in the pipeline (13) by hauling a wire (10) through guidance by a television camera (16) moving in the pipeline (13), the rubber tubular body (5) is expanded by supply of compressed air thereto and presses its outer circumferential surface against the inner wall of pipeline, whereby the mending material (M) is pressed against the broken part of pipeline (13) and the outer circumferential surface of the rubber tubular body (5). The ambient temperature of the mending material is measured and inputted in the control unit (B), temperature of the mending material (M) is maintained at a specified temperature range by controlling heating by the heater (7) and the mending material (M) is heated for a specified period of time to harden. Thus, the inner surface of pipeline (13) is repaired by resin coating. IMAGE