CIPP Lateral Liner Assembly for Sealing Main-Lateral Junctions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pipe lining systems fail to effectively repair leaks and infiltration issues at junctures between main and lateral pipes, particularly due to inadequate sealing and adherence, and are difficult to position correctly underground.
Innovation Solution
A CIPP (Cured-in-Place Pipe) liner system comprising a main line liner and a CIPP lateral liner, attached to a bladder, with a membrane and felt layer, and a backing ring for improved resin saturation and adherence, allowing for efficient repair of lateral pipe junctions by forming a T-shape and using a vacuum for resin impregnation and curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a T or Y shaped liner is inserted to repair damaged junctures, then the repair device can address lateral pipe line connections, but positioning the repair device in the correct location underground becomes time consuming and difficult
Solution Approach 1:
A positioning device with locating protrusions and recesses is introduced as an intermediary tool to facilitate accurate alignment of the T or Y shaped liner with the lateral pipe junction. The locating protrusions on the positioning device engage with corresponding recesses in the liner, providing precise positioning without requiring complex manual alignment procedures underground.
Solution Approach 2:
The liner is pre-assembled with the positioning device and resin saturation equipment before insertion into the pipe. This preliminary preparation ensures that when the liner is inserted, it is ready for immediate positioning and resin impregnation, eliminating the need for complex in-situ assembly and reducing the time required for underground repairs.
2Reliability
If the liner is saturated in resin before positioning, then the repair can be performed, but positioning the saturated liner becomes even more difficult and time consuming
Solution Approach 1:
The liner system is divided into separate components: the T or Y shaped liner body, the positioning device, and the resin saturation mechanism. This segmentation allows each component to be prepared independently and optimally - the liner can be saturated with resin in a controlled environment while the positioning device remains separate, then they are assembled together for insertion, maintaining both repair effectiveness and positioning ease.
3Ease of manufacture
If prior art CIPP repair devices are used, then pipe repair is attempted, but they fail to achieve sufficient adherence and sealing at junctures
Solution Approach 1:
The liner employs composite construction combining the T or Y shaped structural liner with an integrated positioning device and resin saturation system. This composite approach ensures proper alignment and complete resin impregnation of all surfaces that contact the pipe wall, achieving superior adherence and sealing at junctures compared to simpler prior art devices that lacked these integrated features.
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 adherence, resulting in stronger, more resilient pipe repairs with enhanced flow characteristics and extended pipe lifespan by ensuring direct contact between the resin-saturated felt layer and the pipe wall, while reducing resin contact with the bladder.
Implementation Method 1
positioned so that it is contacting said pipe wall; wherein said second CIPP liner is positioned inside of said second bladder; wherein said second bladder is configured to be inflated to expand said second CIPP liner into said lateral pipe line
Implementation Method 2
A CIPP (Cured-in-Place Pipe) liner system comprising a main line liner and a CIPP lateral liner
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.