| 摘要 |
A method for repairing a pipe line in a non-excavating type is provided. The present invention relates to a method for repairing a damaged portion of a pipe line by expanding the volume of an expansion member where maintenance felt with a hardener impregnated is wound inside the pipe line, inserting and arranging a packer inside the expansion member, supplying hardening hot wind provided by a hot wind supply unit through a hot wind inlet of an internal insertion pipe which is inserted and arranged in an inner hole of the packer, and thermally hardening the hardener of the maintenance felt being in close contact with an inner surface of the pipe line by a heat source of the hardening hot wind while discharging the hardening hot wind heat-exchanged with the packer through a hot wind outlet of the internal insertion pipe. In particular, a predetermined length of hot wind circulating line has one end connected to the hot wind outlet and the other end connected to the hot wind supply unit. The hot wind circulating line is arranged between a first arrangement groove of a first heating part and a first arrangement groove of a second heating part. Hot wind circulated along the hot wind circulating line is heated by a heat source generated by one or more heating bars provided on any of the first and second heating parts which are vertically combined to each other, and the heated hot wind is supplied to a heating part through the hot wind supply unit. |
