Testable Termination Fitting for Sealed Interstitial Leak Monitoring
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Solution Overview
Problem
Double-walled conduits used for conveying hydrocarbon products face challenges in effectively monitoring and containing leaks, which can lead to environmental contamination, as existing solutions do not adequately ensure the integrity of the interstitial space between the primary and secondary pipes.
Innovation Solution
A termination fitting assembly is introduced, comprising an interior fitting with an annular channel and an exterior fitting that exerts a compressive force on an annular seal, creating a sealed engagement with the conduit, allowing for monitoring of the interstitial space for fluid, gas, and pressure levels, thereby enhancing leak detection and containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a termination fitting assembly with sealing mechanisms is installed, then leak detection capability is improved, but device complexity increases
Solution Approach 1:
The termination fitting assembly is divided into distinct functional components: an interior fitting with an annular channel for monitoring, an exterior fitting for structural support, and a separate annular seal for containment. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability for leak detection.
Solution Approach 2:
The annular seal acts as an intermediary element between the interior and exterior fittings, creating a sealed interface that contains the interstitial space. This mediator component enables reliable leak detection by providing a defined boundary for monitoring without requiring the entire assembly to be overly complex.
2Reliability
If the annular seal is compressed to ensure sealing, then containment integrity is improved, but installation difficulty increases
Solution Approach 1:
The exterior fitting is designed to be adjustable, allowing it to be positioned at different locations along the conduit. This dynamic positioning capability enables installers to optimize the compression force on the annular seal for achieving proper sealing, while the adjustable nature simplifies the installation process by allowing for on-site adjustments.
Solution Approach 2:
The compression force applied to the annular seal can be varied by adjusting the position of the exterior fitting. By changing this physical parameter (compression force), the system achieves optimal containment integrity without requiring complex installation procedures, as the force can be adjusted incrementally during installation.
3Measurement precision
If monitoring of the interstitial space is enabled, then early leak detection is improved, but device complexity increases
Solution Approach 1:
The monitoring function is extracted as a distinct feature through the annular channel within the interior fitting. This channel creates a dedicated pathway for detecting leaks in the interstitial space, separating the monitoring function from the structural components. This extraction enables precise leak detection without requiring the entire termination fitting assembly to be overly complex.
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 solution effectively seals the interstitial space, enabling early intervention in case of malfunctions and minimizing environmental contamination by allowing continuous or sporadic monitoring for leaks and pressure changes, ensuring the integrity of hydrocarbon product transport.
Implementation Method 1
the exterior fitting exerts a compressive force on an annular seal, creating a sealed engagement with the conduit
Data Source
AI summary
A termination fitting assembly for use with a conduit includes the conduit comprising a primary pipe positioned centrally within a secondary pipe along a longitudinal axis of the conduit and the conduit having an interstitial space defined between the primary pipe and secondary pipe. The termination fitting assembly includes an interior fitting having an inner wall and an outer wall, the inner wall sized and shaped for insertion into and sealing with the primary pipe, and the outer wall extending circumferentially around the secondary pipe of the conduit. The termination fitting assembly includes an annular channel defined between the inner wall and the outer wall of the interior fitting and in fluid communication with the interstitial space of the conduit and an exterior fitting positioned around the conduit.