Pipeline Coating System with Dynamic Thickness Control
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Solution Overview
Problem
Existing methods for repairing underground pipelines are costly, inefficient, and fail to provide real-time evaluation of pipeline conditions, often resulting in inadequate or excessive material application and neglecting the structural integrity of joints and lateral branches.
Innovation Solution
A system that simultaneously evaluates the interior surface and structural condition of pipelines using scanning modules and applies a dynamically controlled epoxy coating as it is drawn through the pipeline, ensuring precise material application and reinforcement based on real-time data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional digging and replacement methods are used to repair pipelines, then pipeline integrity is restored, but repair cost and time increase significantly
Solution Approach 1:
The invention extracts only the defective interior surface layer of the pipeline and replaces it with a coating, rather than removing and replacing the entire pipeline. This selective replacement approach restores pipeline integrity while avoiding the extensive excavation and repiping required by traditional methods, thereby significantly reducing repair time and cost.
Solution Approach 2:
The coating system acts as an intermediary layer between the pipeline interior surface and the transported fluid. This intermediate coating restores integrity by sealing cracks and defects without requiring complete pipeline replacement, enabling repair through a mediating substance rather than structural reconstruction.
2Reliability
If traditional digging and replacement methods are used to repair pipelines, then pipeline integrity is restored, but repair cost increases significantly
Solution Approach 1:
The invention extracts only the defective interior surface layer of the pipeline and replaces it with a coating, rather than removing and replacing the entire pipeline. This selective replacement approach restores pipeline integrity while avoiding the extensive excavation and repiping required by traditional methods, thereby significantly reducing repair time and cost.
Solution Approach 2:
The coating system uses relatively inexpensive coating materials applied in a controlled manner to restore pipeline integrity. Rather than investing in expensive complete pipeline replacement, the invention uses cost-effective coating materials that provide sufficient durability for the repair application.
3Ease of manufacture
If uniform coating thickness is applied to all pipeline sections, then coating application is simplified, but material is wasted on sections that do not require thick coating
Solution Approach 1:
The invention applies coating material with varying thickness based on the local condition of the pipeline interior surface. Scanning devices identify areas with cracks or defects that require thicker coating, while sound sections receive thinner coating. This localized quality approach ensures adequate protection where needed while minimizing material waste on already sound sections.
Solution Approach 2:
The coating application system dynamically adjusts coating thickness in real-time based on feedback from scanning devices that continuously monitor pipeline surface conditions. This dynamic adjustment allows the system to optimize material application, applying thicker coating only where defects are detected and thinner coating elsewhere, thereby reducing overall material consumption while maintaining repair effectiveness.
4Measurement precision
If pipeline inspection is performed separately from coating application, then inspection quality is improved, but total repair time increases
Solution Approach 1:
The invention merges the inspection and coating application processes into a single integrated operation. Scanning devices and coating application equipment are combined in one system that travels through the pipeline simultaneously performing both inspection and repair functions. This eliminates the need for separate inspection and coating application trips, reducing total repair time while maintaining inspection quality through dedicated scanning sensors.
Solution Approach 2:
The inspection and coating application occur continuously in a single pass through the pipeline. Rather than performing inspection, then removing the pipeline section, then applying coating in separate discrete steps, the system maintains continuous operation throughout the repair process, maximizing productivity and minimizing total repair time.
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 approach reduces repair time, applies the exact amount of material needed, effectively seals cracks, and enhances pipeline integrity while being more cost-effective than traditional methods.
Implementation Method 1
apply a curable resin system to coat the interior of the pipeline
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.