Segmented Liner Inversion via Cleanout Pipe
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cured-in-place pipeline repair methods require multiple access points and often block sewer pipes during the inversion process, necessitating costly and time-consuming reinstatement procedures, which can lead to solid buildup issues.
Innovation Solution
A method involving an elongated bladder tube and liner tube assembly where the liner is positioned outside the bladder within the pipe, allowing inversion through a single access bore without blocking the pipe, using a frangible attachment that can be easily formed in the field, and utilizing an external inversion machine to position the liner accurately without entering the pipe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the liner is inverted through a cleanout pipe into the lateral line, then only one access point is required, but the liner blocks off the lateral line and service to the house
Solution Approach 1:
The liner is divided into two separate sections: a first section in the lateral line and a second section in the cleanout pipe. This segmentation allows the liner to be installed through one access point while preventing complete blockage of the lateral line, as the second section is positioned in the cleanout pipe rather than extending into the lateral line.
Solution Approach 2:
The cleanout pipe serves as an intermediary space that accommodates the second section of the liner. By positioning part of the liner in the cleanout pipe, the system mediates between the need for single-point access and the need to maintain lateral line service continuity.
2Device complexity
If the liner is inverted through the cleanout pipe, then single access point installation is achieved, but expensive reinstatement equipment and additional time are required to cut out the liner
Solution Approach 1:
By segmenting the liner into two sections with the second section positioned in the cleanout pipe, the system eliminates the need for costly reinstatement cutting operations. The cleanout pipe section can be removed or accessed separately without requiring expensive equipment to cut through the lateral line liner.
Solution Approach 2:
The second section of the liner is extracted into the cleanout pipe space, separating it from the lateral line. This extraction allows the lateral line liner to remain intact and functional while the cleanout pipe section can be independently managed, removed, or accessed without affecting service to the house.
3Device complexity
If the liner blocks off the lateral line during inversion, then single access point installation is enabled, but solid buildup occurs on the lining causing backups
Solution Approach 1:
Segmenting the liner into two sections prevents complete blockage of the lateral line. The first section in the lateral line and second section in the cleanout pipe configuration allows flow to continue through the lateral line while the liner is being installed, preventing solid buildup and backups.
Data Source
AI summary
A method of inserting a cured in-place pipe from a cleanout includes positioning a lining along a portion of a length of a bladder, wherein the lining is frangibly connected to the bladder, inserting the bladder through the cleanout, to a position wherein the lining is within the pipe and does not block the pipe.