Device and Method for Exhausting Steam in Cured-in-Place Pipelining

Patent metadata

Field	Value
Publication number	US-2016273698-A1
Application number	US-201615071244-A
Country	US
Kind code	A1
Filing date	Mar 16, 2016
Priority date	Mar 16, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A method and apparatus for exhausting steam in steam curing a cured-in-place liner that avoids directing the steam toward a house or building in communication with a pipeline in need of repair. One embodiment includes the use of a liner, a bladder, and an exhaust hose operatively connected to the bladder. A resinous material capable of curing and hardening is applied to the liner. The bladder presses the liner against the pipeline. The end of the steam exhaust hose connected to the bladder is positioned on the interior of the bladder and the opposite end of the steam house is positioned outside the bladder to direct steam away from the house or building as steam is introduced inside the bladder to assist in curing the resinous material.

First claim

1 . A method of exhausting steam in steam curing a cured-in-place liner in a pipeline in need of repair, the method comprising:
taking a liner having a closed end; taking an exhaust hose having first and second opposite ends; operatively connecting the first end of the exhaust hose to the closed end of the liner; applying a resinous material to the liner capable of curing and hardening; positioning the liner against the pipeline with the first end of exhaust hose being on the inside of the liner; introducing steam inside the liner to assist in curing the resinous material; and exhausting at least a portion of the steam through the exhaust hose and outside the liner.

2 . The method of claim 1 wherein the first end of the exhaust hose is connected to the liner through an intermediate member.

3 . The method of claim 2 wherein the intermediate member is a rope.

4 . The method of claim 1 wherein the liner is inverted to position the liner against the pipeline.

5 . The method of claim 1 wherein the liner is pulled into the pipeline to position the liner against the pipeline.

6 . A method of exhausting steam in steam curing a cured-in-place liner in a pipeline in need of repair, the method comprising:
taking a liner; taking a bladder having first and second opposite ends, the first end being closed; taking an exhaust hose having first and second opposite ends; operatively connecting the first end of the exhaust hose to the bladder; applying a resinous material to the liner capable of curing and hardening; positioning the liner against the pipeline with the bladder being on the inside of the liner and the first end of exhaust hose being on the inside of the bladder; introducing steam inside the bladder to assist in curing the resinous material; and exhausting at least a portion of the steam through the exhaust hose and outside the bladder.

7 . The method of claim 6 wherein the first end of the exhaust hose is connected to the bladder through an intermediate member.

8 . The method of claim 7 wherein the intermediate member is a rope.

9 . The method of claim 6 wherein the liner and bladder are inverted to position the liner against the pipeline.

10 . The method of claim 6 wherein the liner and bladder are pulled into the pipeline to position the liner against the pipeline.

11 . The method of claim 6 wherein the first end of the exhaust hose is operatively connected to the first end of the bladder.

12 . The method of claim 11 further comprising deflating the bladder and removing the bladder from the pipeline after the resinous material has cured and hardened by pulling on the exhaust hose.

13 . The method of claim 6 wherein the resinous material is applied to the liner after the exhaust hose is operatively connected to the bladder.

14 . The method of claim 6 further comprising taking a launcher device having an aperture in one end and securing at least a portion of the liner to the launcher device.

15 . The method of claim 14 further comprising inserting one end of the exhaust hose through the aperture in the launcher device before connecting the first end of the exhaust hose to the bladder.

16 . The method of claim 6 further comprising positioning a gasket about a portion of the liner assembly.

17 . The method of claim 6 wherein the pipeline includes a main pipe and a lateral pipe and the liner assembly includes a main liner tube positioned against the main pipe and a lateral liner tube positioned against the lateral pipe.

18 . The method of claim 6 wherein the liner is disposed at the junction between a main and lateral sewer pipe.

19 . An apparatus for repairing a damaged section of a pipeline, comprising:
a bladder having first and second opposite ends; a liner positioned at least partially within the bladder; an exhaust hose having first and second opposite ends; wherein the first end of the bladder being closed and operatively connected to the first end of the exhaust hose with the exhaust hose extending away from the second end of the bladder on the outside of the bladder; whereby with inversion of the liner and bladder into the pipeline the first end of the exhaust hose is disposed within the bladder and extends toward the second end of the bladder.

20 . The apparatus of claim 19 wherein the exhaust hose is positioned proximate the first end of the bladder.

22 . The apparatus of claim 19 further comprising a launcher device having an aperture in one end.

23 . The apparatus of claim 22 wherein the exhaust hose extends through the aperture.

24 . The apparatus of claim 22 further comprising a lay flat hose fluidly connected to the aperture, said lay flat hose having an end cap with an aperture therein, wherein the exhaust hose extends through the aperture in the lay flat hose.

25 . The method of claim 19 further comprising positioning a gasket about a portion of the liner assembly.

26 . The method of claim 19 wherein the pipeline includes a main pipe and a lateral pipe and the liner assembly includes a main liner tube positioned against the main pipe and a lateral liner tube positioned against the lateral pipe.

27 . The method of claim 19 wherein the liner is disposed at the junction between a main and lateral sewer pipe.

28 . A method of exhausting steam in steam curing a cured-in-place liner that avoids directing the steam toward a house or building in communication with a lateral sewer pipe joined to a main sewer pipe, the method comprising:
taking a liner assembly including a lateral portion and a main portion; taking a lateral bladder having first and second opposite ends, the first end being closed; taking a main bladder; taking an exhaust hose having first and second opposite ends; operatively connecting the first end of the exhaust hose to the first end of the lateral bladder; applying a resinous material to the liner assembly capable of curing and hardening; taking a launcher device having opposite ends and a launcher device opening between the ends; positioning the lateral portion of the liner assembly at least partially on the inside of the lateral bladder; securing the main bladder to the launcher device; positioning the main portion of the liner assembly on the outside of the main bladder with the lateral portion of the liner assembly and the lateral bladder extending through the launcher device opening at least partially into the launcher device; moving the launcher device through the main sewer pipe to a position where the launcher device opening is aligned with the lateral sewer pipe; inflating the main bladder to press the main portion of the liner assembly against the main sewer pipe; inflating the lateral bladder to invert the lateral bladder and the lateral portion of the liner assembly within the lateral sewer pipe with the lateral portion being on the outside of the lateral bladder and pressed against the lateral sewer pipe; introducing steam within the lateral bladder to assist in curing the resinous material; and exhausting at least a portion of the steam from the inside of the bladder to the outside of the bladder through the exhaust hose and away from the house or building.

29 . The method of claim 28 wherein the first end of the exhaust hose is connected to the first end of the bladder through an intermediate member.

Assignees

• Lmk Technologies Llc

Inventors

• Kiest Jr Larry W

Classifications

• F16L55/18 Primary

  Appliances for use in repairing pipes (F16L55/10 takes precedence) · CPC title

• B29C73/04

  using preformed elements · CPC title

• F16L55/179

  specially adapted for bends, branch units, branching pipes or the like · CPC title

• B29C33/10

  with incorporated venting means · CPC title

• F16L55/163

  a ring, a band or a sleeve being pressed against the inner surface of the pipe · CPC title