Pipe Coupling Capsulation with Retaining Elements Against Axial Migration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pipe coupling seals fail to maintain a seal under high pressure and lack the internal space to be applied over existing bell joints, leading to axial migration and seal failure.
Innovation Solution
A pipe coupling capsulation assembly with a band, annular seal elements, opposing clamp members, and retaining elements that prevent axial migration, secured with L-shaped legs and a split ring lockable with a tab, allowing for sealing over leaking joints without interrupting fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art seals are used externally over existing couplings or bell joints, then the seal can be applied over leaking joints, but the seal lips are pushed outwards under high pressure leading to complete seal failure
Solution Approach 1:
The retaining element is divided into multiple portions (first portion, second portion, third portion) that are bent at different angles to create a multi-segmented structure. This segmentation allows the retaining element to engage with the seal at multiple points and distribute the high pressure forces across different segments, preventing the seal lips from being pushed outwards uniformly and maintaining seal reliability under high pressure conditions
2Reliability
If a simple retaining structure is used, then the device complexity is reduced, but the seal cannot be prevented from axial migration
Solution Approach 1:
The retaining element incorporates bent portions with specific angle ranges (first angle α between 30-60 degrees, second angle β between 10-30 degrees) that create a dynamic, adaptive structure. These angled portions allow the retaining element to flex and conform to the seal geometry while maintaining preventive engagement, effectively stopping axial migration without requiring an overly complex rigid structure
Data Source
AI summary
A pipe coupling capsulation assembly includes a band having an inner annular seal element wrappable around a pipe, opposing clamp members that extend from the band, at least one tightening element for clamping together the clamp members, and a plurality of retaining elements extending from the band. Each retaining element overlies a portion of an adjacent one of the retaining elements.