Apparatus and method for lining in situ pipe

Details Apparatus and method for lining in situ pipe Apparatus and method for lining in situ pipe

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/165 (2006.01) F16L 1/028 (2006.01) F16L 55/18 (2006.01)

Patent

CA 2452413

Apparatus for driving a flexible composite liner into an existing pipe in an excavation comprises contra-rotating wheels for driving flexible liner therebetween and into a guide tube extending between the driving wheels and the existing pipe. The guide tube forms a curved path to align the liner with the existing pipe. A port is formed in a linear portion of the guide tube enables insertion and connection of an optional inflexible bullet to the leading end of the flexible liner. The drive wheels are preferably assisted by transverse guide wheels. The existing pipe is exposed in an excavation. A trailer with the drive wheels is positioned adjacent the excavation, a guide tube is installed to extend between the trailer and the existing pipe forming a curved path, a spool of flexible liner is provided and driven through the guide tube to be aligned with and inserted into the existing pipe.

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