Pipe Repair Sleeve Terminations for Leak-Containing Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pipe repair methods using composite materials are limited in containing leaks through perforations, leading to fluid escape when the pipe becomes perforated, especially for Type B Defects.
Innovation Solution
A pipe replacement system with termination enclosures that form pressurized seals at the ends of a repair sleeve, preventing fluid leaks by creating a new pressure boundary without relying on adhesion to the pipe surface, and using mechanical fasteners and seals to secure the repair sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional composite repair methods are used on perforated pipes, then the repair process is simpler, but the repair cannot contain leaks when the pipe becomes perforated
Solution Approach 1:
The repair system is divided into distinct functional components: the repair sleeve for structural reinforcement, termination enclosures for seal formation, seals for leak prevention, and ring restraints for positioning. This segmentation allows each component to perform its specific function effectively, with the termination enclosures and seals specifically addressing the leak containment requirement without requiring the entire system to be redesigned
Solution Approach 2:
The repair system employs a nested structure where the repair sleeve is positioned over the perforated pipe section, termination enclosures are fitted over the ends of the repair sleeve, and seals are positioned within the termination enclosures. This nested arrangement allows multiple functional elements to be integrated in a compact configuration, containing the leaked fluid within the annular chamber formed by the nested components
2Reliability
If composite repairs rely on adhesion to pipe surface, then the repair can be applied to damaged pipes, but adhesion failure causes fluid to escape under or through the repair
Solution Approach 1:
The invention extracts the pressure containment function from the adhesive bond between the repair sleeve and pipe surface, relocating it to the termination enclosures and seals at the ends of the repair sleeve. This extraction eliminates the critical dependency on surface adhesion for pressure containment, allowing the repair to remain reliable even when the pipe surface is damaged or contaminated
Solution Approach 2:
The termination enclosures and seals act as intermediary elements that create a new pressure boundary, mediating between the repair sleeve and the pipe ends. This intermediary structure provides reliable pressure containment without requiring direct adhesion between the repair materials and the pipe surface, thus eliminating the need for extensive surface preparation
3Length of moving object
If extended repair lengths are used exceeding ninety-one meters, then more pipe length is restored, but leak containment at termination points becomes more difficult
Solution Approach 1:
The invention applies local quality by providing enhanced sealing features (termination enclosures and seals) specifically at the termination points of the repair sleeve, while the intermediate sections of the repair sleeve maintain their structural reinforcement function. This localized enhancement of seal reliability at critical points allows the system to effectively handle extended repair lengths without compromising containment at the ends
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A pipe replacement system and for repairing a pipe. The pipe replacement system includes a wrap wrapped around a pipe outer surface to form a repair sleeve having a first termination section and a second termination section. The first termination enclosure encloses the first termination section to form a first pressure containing connection with the repair sleeve. The first termination enclosure includes a first outer seal disposed around the pipe on a pipe outer surface. The first outer seal is outwardly spaced from the first termination section to annul arly seal on the pipe outer surface. The first termination enclosure further includes a first inner seal disposed around the repair sleeve on a repair sleeve outer surface. The first inner seal is inwardly spaced from the first outer seal to annul arly seal on the repair sleeve outer surface.