Pipe Liner and Method of Using the Same

摘要

A pipe liner and a method of using the same are provided. The method includes inserting a pipe liner impregnated with a resinous material into a length of pipe, where the pipe liner has an outer diameter substantially equal to or greater than an inner diameter of the pipe. A bladder having an unstretched outer diameter less than the inner diameter of at least a portion of the length of pipe and capable of stretching circumferentially is inserted into the pipe liner. The bladder is expanded under fluid pressure against the pipe liner, pressing the pipe liner against an inner wall of the length of pipe. The resinous material is allowed to cure and harden, leaving a renewed pipe wall. The length of pipe may have a plurality of inner diameters, and the bladder stretches to produce a smooth interior surface of the pipe liner across the plurality of pipe diameters.

主权项

1. A liner assembly for lining a pipe having varying diameters along a length of the pipe, comprising:
a bladder having a first end, an opposite second end, and a bladder body there between, wherein the bladder body has a diameter smaller than or equal to a smallest diameter of the pipe; wherein the bladder body is capable of stretching circumferentially; a pipe liner having a pipe liner body along its length, the pipe liner body having a diameter larger than the smallest diameter of the pipe; and wherein the pipe liner is impregnated with a resinous material capable of curing and hardening to create a cured pipe liner.