Pipeline Epoxy Coating With Real-Time Wall Condition Assessment
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Solution Overview
Problem
Existing methods for repairing underground pipelines are costly and inefficient, as they often require digging and replacing damaged sections, which can lead to incomplete sealing at joints, material over/under application, and lack real-time condition assessment, resulting in compromised pipeline integrity and potential contamination of fluids.
Innovation Solution
A system that evaluates the interior surface and structural condition of pipelines in real-time while applying a dynamically controlled epoxy coating using a spin cast machine, allowing for precise material application and sealing of cracks and faults, enabling the pipeline to be repaired and reused without extensive excavation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional digging and replacement methods are used to repair pipelines, then damaged sections can be replaced, but repair costs and time increase significantly
Solution Approach 1:
The patent applies a flexible coating system that is drawn through the existing pipeline and conforms to the internal surface geometry. The coating material is applied as a liquid or semi-liquid slurry that flows over the pipeline interior, creating a seamless flexible barrier that seals cracks and defects without requiring rigid structural support or excavation.
Solution Approach 2:
The invention extracts the damaged pipeline from the repair process entirely. Instead of removing and replacing sections of pipe, the system leaves the existing pipeline in place and applies a protective coating that isolates the fluid from the damaged surface, effectively taking the damaged pipe out of the functional repair equation while maintaining its structural role.
2Reliability
If traditional digging and replacement methods are used to repair pipelines, then damaged sections can be replaced, but material costs and excavation requirements increase
Solution Approach 1:
The patent uses a thin film coating approach where a relatively small amount of coating material is applied to the internal surface of the existing pipeline. This creates a protective barrier without requiring the large quantities of new pipe material that would be needed for complete replacement, significantly reducing material consumption and waste.
Solution Approach 2:
The invention recovers the value of the existing pipeline by retaining it in service rather than discarding it through replacement. The coating system allows the original pipeline to continue functioning with restored integrity, preventing the waste of the existing pipe infrastructure and reducing the need for new material production and disposal of old materials.
3Ease of manufacture
If uniform coating thickness is applied to all pipeline sections, then application is simplified, but material is wasted on sections that do not require thick coating
Solution Approach 1:
The patent implements variable coating thickness where the coating system automatically adjusts the amount of material applied based on the local condition of the pipeline surface. Areas with cracks, corrosion, or defects receive thicker coating applications, while sound sections receive thinner coatings, optimizing material usage while maintaining protective effectiveness where needed.
Solution Approach 2:
The coating application system is dynamic rather than static, continuously adjusting coating parameters based on real-time feedback from pipeline condition assessment. The system can vary coating thickness, application speed, and material flow rate dynamically as it moves through different sections of the pipeline, allowing simplified operation without uniform material waste.
4Productivity
If pipeline coating is applied without real-time condition assessment, then the process is simpler, but coating material may be under or over applied
Solution Approach 1:
The patent incorporates feedback mechanisms where the coating system receives real-time information about pipeline surface conditions and adjusts its operation accordingly. Sensors detect surface irregularities, cracks, and material properties, and this information feeds back to control the coating application rate and thickness, ensuring precise material application without requiring complex manual intervention.
Solution Approach 2:
The coating system performs multiple functions simultaneously: it assesses pipeline condition, determines required coating thickness, applies the coating material, and monitors application quality all in one integrated process. This multi-functionality maintains productivity by avoiding separate assessment and application steps while ensuring manufacturing precision through coordinated control of all functions.
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
This solution reduces repair time and material costs by applying only the necessary amount of coating to address specific pipeline conditions, ensuring leak-free operation and improved structural integrity without the need for extensive excavation, thus addressing the limitations of prior art methods.
Implementation Method 1
applying a dynamically controlled epoxy coating using a spin cast machine
Data Source
AI summary
A method and system for evaluating the interior surface and exterior wall conditions of a pipeline while also dynamically installing a repair coating in a pipeline, such as an underground water pipeline. The system is towed into the pipeline and drawn back therethrough. As the system is drawn back, one module in the system evaluates the surface condition of the interior of the pipe and another module evaluates the structural condition of the wall of the pipe. Based on the evaluation data obtained from the two modules an epoxy material is applied to the interior surface of the pipe using a spin cast machine that is drawn behind the two modules. Preferably, a layer of epoxy is applied to the interior surface of the host pipe to the appropriate thickness based on the pipe condition as determined by the two modules.