The invention discloses a main
pipe assembly and a manufacturing method, a construction method and a
system thereof. The dry
pipe assembly comprises an inner-layer rubber
pipe formed through an
extrusion process and an outer-layer belt blank woven on the outer side of the inner-layer rubber pipe through a circular weaving
machine, the inner surface of the outer-layer belt blank can be separated, and a cavity used for containing resin is formed between the inner-layer rubber pipe and the outer-layer belt blank. The manufacturing method comprises the steps of inner-layer rubber tube
extrusion, gradient cooling,
surface modification, outer-layer strip blank weaving and rolling,
surface modification comprises
sand blasting,
plasma-induced
maleic anhydride grafting and
epoxy resin prime coat treatment, and closed-
loop control is adopted in the
surface modification process and the prime coat process. The manufacturing
system comprises a forming device, a cooling device, a weaving device and a winding device. In the pipeline repairing construction, the main pipe
assembly and the inner wall of the pipeline are bonded into a whole through the operations of main pipe unwinding, glue injection, glue pressing, dragging into the to-be-repaired pipeline, pressurization and attachment and curing. By optimizing the structural design and the process, the bonding reliability of the main pipe assembly and the pipeline is improved, and the pipeline repairing quality and the construction efficiency are guaranteed.