Pipe Reinforcement Strip Anchoring With Cured Potting Cavity
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Solution Overview
Problem
Existing end fittings for offshore flexible pipes are costly and have a long installation duration, limiting the operational reliability of pipeline systems.
Innovation Solution
A pipe reinforcement strip anchoring system that includes a reinforcement strip with modified structures, such as hooked ends or openings, anchored in a potting cavity within a pipe fitting using cured potting material, enhancing the anchoring strength and securing the pipe segment tubing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing end fittings are used for offshore flexible pipes, then the pipe can be connected and anchored, but the installation cost is high and the installation time is long
Solution Approach 1:
The end fitting is divided into separate functional components: an inner fitting body for insertion between the pressure sheath and reinforcement strip, and an outer fitting body for circumferential disposal around the inner fitting body. This segmentation allows for simplified assembly and reduced installation complexity, directly addressing the long installation duration issue while maintaining connection reliability.
Solution Approach 2:
Holes are formed through the reinforcement strip before the anchoring process. This preliminary action prepares the reinforcement strip for subsequent potting material injection, enabling faster and more reliable anchoring without requiring complex现场 operations, thus reducing installation time while ensuring connection integrity.
2Reliability
If existing end fittings are used for offshore flexible pipes, then the pipe can be connected and anchored, but the installation cost is high
Solution Approach 1:
The invention uses potting material as a disposable anchoring medium that is injected into the cavity between the inner and outer fitting bodies. This potting material permanently bonds the reinforcement strip to the fitting structure, eliminating the need for expensive reusable anchoring mechanisms while ensuring reliable connection, thus reducing installation cost without compromising operational reliability.
Solution Approach 2:
The potting material serves as an intermediary substance that bonds the reinforcement strip to the fitting structure. This intermediary approach simplifies the anchoring process and reduces the complexity and cost of the fitting components themselves, while maintaining strong mechanical attachment for reliable operation.
3Strength
If reinforcement strip is anchored using existing methods, then the pipe can be secured, but the anchoring strength is insufficient under operational forces
Solution Approach 1:
The inner fitting body is nested between the pressure sheath and reinforcement strip, while the outer fitting body is nested around the inner fitting body, creating a nested cavity structure. This nested configuration allows potting material to be injected and cured around the reinforcement strip, providing 360-degree bonding and significantly enhancing anchoring strength to prevent bond failure under operational forces.
Solution Approach 2:
The invention changes the physical state of the potting material from liquid (during injection) to solid (after curing) to create a strong mechanical bond. This parameter change enables the potting material to flow into all cavities and cracks for complete coverage, then harden to provide high-strength anchoring that prevents bond failure under operational loads.
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 system improves the anchoring strength of the reinforcement strip within the pipe fitting, reducing the likelihood of bond failure under operational forces and enhancing the operational reliability of pipeline systems by using modified reinforcement strip structures and cured potting material.
Implementation Method 1
a hole is formed through the reinforcement strip of the pipe segment tubing before the reinforcement strip is anchored in the potting cavity via cured potting material
Data Source
AI summary
Techniques for implementing a system that includes pipe segment tubing and a pipe fitting to be secured to the pipe segment tubing. The pipe segment tubing includes a reinforcement strip implemented between an internal pressure sheath layer and an outer sheath of the pipe segment tubing. The pipe fitting includes an inner fitting body to be inserted between the internal pressure sheath layer and the reinforcement strip of the pipe segment tubing. Additionally, the pipe fitting includes an outer fitting body to be disposed circumferentially around the inner fitting body to define a potting cavity between an inner surface of the outer fitting body and an outer surface of the inner fitting body, in which a hole is formed through the reinforcement strip of the pipe segment tubing before the reinforcement strip is anchored in the potting cavity via cured potting material.