Modular Split Sleeve Assembly for Extended Pipeline Leak Repair
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Solution Overview
Problem
Existing split sleeve repair fittings are limited in addressing leakage along extended lengths of compromised pipelines, as they typically require shutdown for installation and are not designed for continuous operation under production demands.
Innovation Solution
A modular split sleeve system comprising interconnecting segments with angularly displaced separation planes, allowing for customizable lengths and easy assembly, where only end segments require circumferential seals, simplifying installation and avoiding extensive pipe cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single long split sleeve is used to encase extended lengths of pipe, then the pipeline can be sealed over long distances, but the device becomes difficult to fabricate, ship, and install
Solution Approach 1:
The split sleeve is divided into multiple modular segments that can be independently fabricated, shipped, and installed. Each segment can be manufactured to standard lengths, making them easier to produce and transport, while multiple segments can be assembled to achieve the required total encasement length for extended compromised pipeline sections.
2Reliability
If circumferential seals are installed at every segment junction, then sealing reliability is improved, but the complexity of installation and pipe cleaning requirements increase
Solution Approach 1:
Circumferential seals are installed only at the end segments of the modular assembly where they are most needed to seal against the pipeline, rather than at every segment junction. The longitudinal seals between segments provide sufficient sealing for the joints, reducing installation complexity and pipe cleaning requirements while maintaining overall sealing reliability.
3Ease of operation
If the separation planes of adjacent segments are aligned, then assembly is simplified, but the structural strength of the extended unit is reduced
Solution Approach 1:
The separation planes of adjacent segments are intentionally angularly displaced rather than aligned, creating an asymmetric configuration. This angular displacement strengthens the extended modular unit by distributing stresses more effectively across the segment joints, while the bolt holes are positioned to accommodate this angular arrangement, maintaining ease of assembly.
Data Source
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AI summary
A fitting 10 for encasing an extended length of pipe 13 comprising a plurality of segments 11, 12 jointed end-to-end to axially extend over the length of pipe 13, each of the segments 11, 12 being formed by a pair of mating semi-cylindrical sections 21, 22, the pairs of mating sections having arcuate ends forming longitudinally extending opposed faces 26 mating at a diametral plane, the longitudinal opposed faces 26 being sealed together, the adjacent axial ends 23 of the segments 11, 12 being circumferentially sealed together, ends of the fitting having internal seals 36 arranged to contact and seal onto the exterior of the pipe 13 whereby the space between said internal seals 36 within said fitting 10 is closed.