CIPP Lateral Liner Assembly for Pipe Juncture Sealing
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Solution Overview
Problem
Existing pipe lining systems fail to effectively repair leaks and infiltration issues at the junctures of lateral and main pipes, particularly where lateral pipes branch off at angles, due to inadequate sealing and adherence, and previous methods like CIPP repairs have not provided sufficient results.
Innovation Solution
A CIPP liner system comprising a main line liner and a CIPP lateral liner, attached to a bladder, with a felt layer and membrane, where the membrane faces outward to allow vacuum application for resin saturation, and a backing ring with a bonded and unbonded portion to enhance sealing, is used to position and secure the liner within the pipe, ensuring improved adherence and sealing at the juncture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a CIPP liner is inserted into a pipe for repair, then the pipe structure is restored, but the liner may not achieve sufficient adherence to the pipe wall, especially at junctures
Solution Approach 1:
The patent applies local quality by providing a felt layer specifically at the juncture area between lateral and main pipes, where additional sealing and adherence are needed. The felt layer is positioned to extend beyond the lateral pipe opening into the main pipe, creating enhanced local adhesion at the critical juncture zone where leakage most commonly occurs.
Solution Approach 2:
The patent uses composite materials by combining a resin-saturated felt layer with a CIPP liner structure. The felt layer provides enhanced adherence and sealing properties at the juncture, while the CIPP liner provides the structural repair. This composite approach addresses both the adherence problem and the structural restoration need.
2Strength
If resin is applied to saturate the liner, then the liner gains strength and sealing properties, but resin may contact the bladder causing contamination or reduced liner performance
Solution Approach 1:
The patent extracts or removes the bladder from direct contact with the resin-saturated liner by using a feeler tool to separate them. The feeler tool is inserted between the liner and bladder during the resin saturation process, creating a physical barrier that prevents resin from contaminating the bladder while still allowing the liner to be properly saturated.
Solution Approach 2:
The feeler tool serves as an intermediary element between the resin-saturated liner and the bladder. It mediates the resin saturation process by allowing resin to reach the liner while blocking direct contact between the resin and the bladder, thus protecting the bladder from contamination.
3Adaptability or versatility
If a lateral pipe line is installed at a juncture with a main pipe line, then connectivity is provided, but the juncture becomes susceptible to leakage and infiltration over time
Solution Approach 1:
The patent applies preliminary action by installing the felt layer and CIPP liner assembly before the actual service life of the pipe system begins. The felt layer is pre-positioned at the juncture area, and the CIPP liner is pre-saturated with resin, so that when installed, it immediately provides enhanced sealing and adherence at the vulnerable juncture point, preventing future leakage rather than addressing it after it occurs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves superior resin saturation and penetration, resulting in stronger, more resilient pipe repairs with enhanced flow characteristics and extended pipe lifespan by ensuring direct contact of the resin-saturated felt layer with the pipe wall and reducing resin contact with the bladder.
Implementation Method 1
wherein the membrane faces outward to allow vacuum application for resin saturation
Implementation Method 2
resin saturation
Data Source
AI summary
Systems and methods for pipe lining systems and methods of use are described. Systems and methods may include a CIPP lateral liner that is inserted into a bladder forming a CIPP liner assembly that can be inserted into a pipe line for a pipe repair. CIPP liner assembly can include a membrane that produces superior results compared to the prior art. A backing ring may be used with these systems and methods.