Arcuate Gasket Bridge Structure to Prevent Coupling Seal Failure
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Solution Overview
Problem
Common one-bolt pipe couplings experience gasket bridge shifting during installation, leading to gasket liberation and failure to seal the pipe coupling due to sharp ends engaging the end ring as the coupling is tensioned.
Innovation Solution
A gasket bridge with an arcuate body featuring first and second ramps extending from its ends and a projection, which engages with the split ring's inner surface to prevent movement and ensure sealing, along with an end ring assembly that includes a split ring and a gasket bridge with anti-slip features to maintain the gasket's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the gasket bridge has sharp ends to engage the end ring during tensioning, then the coupling strength is improved, but the gasket bridge shifts position causing gasket liberation and sealing failure
Solution Approach 1:
The gasket bridge end is segmented into multiple functional zones: a rounded engagement portion for contacting the end ring, a ramp portion for controlled force distribution, and a shoulder portion for positioning. This segmentation allows each zone to perform its specific function without causing the bridge to shift, resolving the contradiction between engagement strength and positioning stability.
Solution Approach 2:
Different portions of the gasket bridge are given different geometric qualities: the engagement portion has a rounded profile for smooth contact, the ramp portion has an inclined surface for force distribution, and the shoulder portion has a perpendicular face for precise positioning. These local quality variations enable the bridge to maintain both strong engagement and stable positioning.
2Device complexity
If the gasket bridge uses a simple straight profile to bridge the gap, then the device complexity is reduced, but the gasket bridge cannot prevent slipping during installation
Solution Approach 1:
The gasket bridge profile is segmented into distinct functional portions: a rounded engagement portion, a ramp portion with inclined surface, and a shoulder portion with perpendicular face. This segmentation provides multiple anti-slip mechanisms without requiring complex external components, achieving reliable anti-slip performance with moderate structural complexity.
Solution Approach 2:
The engagement portion of the gasket bridge uses a rounded curved profile instead of a sharp straight edge. This curvature allows smooth engagement with the end ring while the subsequent ramp and shoulder portions provide mechanical interference to prevent slipping, combining the benefits of smooth contact and anti-slip performance.
Data Source
AI summary
Example aspects of a gasket bridge for an end ring assembly and a method for using an end ring assembly are disclosed. The gasket bridge can comprise an arcuate body defining an inner surface, an outer surface, a first bridge end, and a second bridge end, the arcuate body defining a bridge radius of curvature; a first ramp extending from the first bridge end; a second ramp extending from the second bridge end; and a projection extending from the inner surface.