Reusable Pipe Test Head With Inflatable Bladder Sealing
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Solution Overview
Problem
Pipeline systems face efficiency and reliability issues due to defects like breaches, kinks, and dents in pipe segments, which compromise fluid integrity and lead to operational inefficiencies and contamination, necessitating effective testing methods to ensure pipeline integrity before operation.
Innovation Solution
A reusable test head system with an inflatable fastener mechanism that secures and seals pipe segments, allowing for integrity testing by flowing a test fluid through an annulus cavity, using a shell with testing ports and inflatable bladders to maintain pipe segment integrity without permanent deformation, enabling multiple uses and improved testing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional testing methods are used, then pipe segment integrity can be tested, but the test head causes permanent deformation to the pipe segment
Solution Approach 1:
The test head uses an inflatable bladder mechanism where a bladder is inflated with fluid or gas to secure the pipe segment in place and seal the test chamber. This pneumatic/hydraulic approach replaces traditional mechanical clamping that causes permanent deformation, allowing the pipe segment to maintain its original shape while still being securely held for integrity testing.
Solution Approach 2:
The system changes the physical state of the securing mechanism from a rigid, permanently deforming mechanical clamp to a flexible, dynamically adjustable inflatable bladder. By controlling the inflation pressure, the system can adapt the securing force to match the pipe segment specifications without exceeding deformation thresholds, thus maintaining pipe integrity.
2Productivity
If a reusable test head is implemented, then multiple pipe segments can be tested, but the system complexity increases
Solution Approach 1:
The test head is designed as a modular assembly with distinct functional components: an inflatable bladder for securing, a seal element for sealing, a test chamber for fluid injection, and control mechanisms. This segmentation allows each component to be independently manufactured, tested, and maintained, reducing overall system complexity while enabling reusability across multiple pipe segments.
Solution Approach 2:
The inflatable bladder mechanism serves multiple functions simultaneously: it secures the pipe segment in place, creates a seal against the pipe surface, and defines the test chamber boundary. This multi-functionality reduces the number of separate components needed, thereby reducing system complexity while maintaining productivity benefits of reusability.
3Reliability
If the inflatable bladder is kept inflated, then the pipe segment is securely sealed, but the test head cannot be removed or reused
Solution Approach 1:
The inflatable bladder is designed with dynamic controllability, allowing it to be inflated to a first pressure level for secure sealing during testing, then deflated to a second, lower pressure level for easy removal. This dynamic pressure adjustment enables the same component to provide both secure sealing and convenient reusability, resolving the contradiction between maintaining seal integrity and enabling test head removal.
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 reusable test head system effectively secures and tests pipe segment integrity, reducing operational inefficiencies and contamination risks by allowing for multiple uses without permanent deformation, thus enhancing pipeline system reliability and efficiency.
Implementation Method 1
increases inflation of the inflatable bladder from the less inflated state to a more inflated state when the tubing of the pipe segment is present in the annulus cavity to facilitate securing and sealing an open end of the pipe segment
Data Source
AI summary
Techniques for implementing and operating a system that includes a pipe segment, which has tubing that defines a bore and a fluid conduit implemented in an annulus of the tubing, and a test head. The test head includes a shell, which defines an annulus cavity, and an inflatable bladder implemented in the annulus cavity, in which the system maintains the inflatable securing bladder in a less inflated state while pipe segment tubing is not present in the annulus cavity and increases inflation of the inflatable bladder to a more inflated state when the tubing is present in the annulus cavity to facilitate securing and sealing an open end of the pipe segment in the test head to enable integrity of the tubing to be tested at least in part by flowing a test fluid into the annulus of the tubing via a testing port on the shell.