| 摘要 |
<p>A method and a device for the construction and/or the reconditioning of pipelines and conduits, by applying or forming around a sheath (309) of impervious flexible material, a tubular member (109) made from fabric or glass fibers or any other suitable material impregnated with a hardening resin (209). The thus formed impregnated tubular member (9) is expanded and shaped by means of at least one expander (1, 1 min ) formed by a tubular ring of resilient flexible material, of cylindrical shape, which has been pressurized so as to cause a fluid-tight squashing of its axial bore (101). By exerting a hydraulic or pneumatic pressure against one end of said expander (1, 1 min ), the latter is advanced along said tube (9) with a rotary-translatory motion.</p> |
