Pipe Repair Sleeve Enclosures for Perforation Leak Containment
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Solution Overview
Problem
Existing pipe repair methods using composite materials are limited in containing leaks through perforations, leading to fluid escape and failure when the pipe becomes perforated, especially at higher fluid pressures.
Innovation Solution
A pipe replacement system involving a repair sleeve with termination enclosures that form pressurized seal connections, preventing fluid leaks by using outer and inner seals around the repair sleeve, which do not rely on adhesion to the pipe for pressure containment, allowing the system to handle higher pressures and reduce the need for extensive surface preparation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If composite repair materials are used to repair pipes, then the repair cost is reduced and system life is extended, but the repair capability is limited when the pipe becomes perforated and fluid pressure exceeds the repair capability
Solution Approach 1:
The repair system is divided into multiple functional components: a repair sleeve for structural reinforcement, termination enclosures for sealing, and seals for leak prevention. This segmentation allows each component to specialize in specific functions, enabling the system to handle both Type A and Type B defects effectively.
Solution Approach 2:
Termination enclosures act as intermediary elements between the repair sleeve and the external environment. These enclosures provide an additional sealing interface that prevents fluid from bypassing the repair sleeve, thereby enhancing leak containment capability without compromising the structural repair function.
2Length of stationary object
If traditional composite repairs are used, then extended repair lengths are achieved, but fluid can be driven under or through the composite repair resulting in external leaks
Solution Approach 1:
Termination enclosures are installed at the ends of the repair sleeve before service operation to prevent fluid from entering underneath the repair. This preliminary sealing action eliminates the risk of fluid being driven under the composite repair during high-pressure operations, addressing the harmful effect before it can occur.
Solution Approach 2:
The sealing function is extracted from the composite repair material itself and implemented through separate termination enclosures and seals. This extraction allows the composite material to focus on structural reinforcement while the dedicated sealing components handle fluid containment, preventing leakage along the repair length.
3Strength
If adhesion-based composite repairs are used, then pipe reinforcement is achieved, but the system fails when adhesive bond between repair sleeve and pipe fails
Solution Approach 1:
Termination enclosures serve as intermediary sealing structures that create a new pressure boundary independent of the adhesive bond. By providing mechanical sealing through the enclosures and seals, the system maintains pressure containment reliability even when the adhesive bond fails, as the sealing function is decoupled from the bonding function.
Solution Approach 2:
The termination enclosures provide a backup sealing mechanism that cushions against the potential failure of the adhesive bond. This prior cushioning ensures that even if the adhesive bond fails under pressure, the termination enclosures prevent fluid leakage, maintaining system reliability.
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 effectively contains leaks at higher fluid pressures and reduces the reliance on adhesion, enhancing the performance and simplicity of pipe repairs by forming a new pressure boundary and preventing fluid escape to the atmosphere, even when the adhesive bond between the repair sleeve and pipe fails.
Implementation Method 1
The first outer seal is outwardly spaced from the first termination section to annularly seal on the pipe outer surface. The first inner seal is inwardly spaced from the first outer seal to annularly seal on the repair sleeve outer surface.
Data Source
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 annularly 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 annularly seal on the repair sleeve outer surface.