| 摘要 |
<p>PROBLEM TO BE SOLVED: To facilitate work of taking a repairing device out of a pipeline in a method of repairing a branch pipe part of the pipeline using a branch pipe repairing part protruded from the outline of the repairing device. SOLUTION: In a pipeline repairing method of sticking repair material 25 from the inside of a main pipe using a repairing device, the repairing device has an expansion chamber R formed of a flexible film 5, and a branch pipe repairing part 7 is formed by making the flexible film bulge so as to be protruded from the outline of the main pipe repairing part 6. Compressed air is led into the expansion chamber R to expand the main pipe repairing part 6 and branch pipe repairing part 7 so as to stick the repair material 25 mounted on each surface. In this method, after sticking the repair material 25 to the inner surface of a branch pipe 23 by the expansion of the branch pipe repairing part 7, negative pressure generated by an ejector is made act upon the expansion chamber R of the repairing device 1, and the branch pipe repairing part 7 in the expanded state is forcibly turned inside out.</p> |
