Vibratory Pipeline Diagnostic System for Corrosion Detection
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Solution Overview
Problem
Existing pipeline diagnostic methods are time-consuming, costly, and ineffective in detecting internal corrosion, erosion, and structural weaknesses until they lead to severe leaks, and they often require shutting down the pipeline or are passive, unable to prevent future flaws.
Innovation Solution
A vibratory pipeline diagnostic system comprising a vibration generator and sensor affixed to the pipeline, with a processing device that sends a drive signal to generate vibrations, receives responses, and compares them to previous data to detect changes in resonant frequency indicating corrosion, erosion, or structural damage, allowing for proactive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual inspection methods are used to check pipeline condition, then inspection can be performed externally, but the method is time-consuming, tedious, expensive, and cannot detect internal flaws until they become severe
Solution Approach 1:
The patent replaces mechanical visual inspection with a vibratory diagnostic system that uses vibration generators and sensors to detect pipeline conditions. The system attaches vibration generators and sensors to the pipeline exterior, generating vibrations that propagate through the pipeline wall to detect internal corrosion, erosion, and structural changes without requiring physical access to internal surfaces or shutting down the pipeline.
Solution Approach 2:
The patent uses vibration waves as an intermediary to indirectly detect internal pipeline conditions. The vibration generators create mechanical waves that travel through the pipeline wall, and sensors detect changes in these waves caused by internal degradation, allowing indirect observation of internal conditions without direct visual access.
2Reliability
If a pig inspection device is used to scan the interior of the pipeline, then internal flaws can be detected, but the device requires shutting down material flow and involves cumbersome insertion and removal procedures
Solution Approach 1:
The patent inverts the inspection approach by placing sensors and vibration generators on the exterior of the pipeline rather than inserting devices into the interior. This allows the system to detect internal conditions from the outside, eliminating the need for pipeline shutdown and complex insertion/removal procedures while maintaining the ability to detect internal corrosion, erosion, and structural changes.
3Reliability
If a passive vibration detection system like Lander is used, then leak detection is possible, but the system cannot detect developing weaknesses or prevent future flaws
Solution Approach 1:
The patent performs preliminary action by continuously monitoring vibrational characteristics to detect early signs of pipeline degradation before leaks occur. The system compares real-time vibration data against baseline measurements to identify developing weaknesses such as thinning walls or structural changes, enabling proactive maintenance and preventing future leaks rather than merely detecting them after they happen.
Solution Approach 2:
The patent implements feedback by continuously comparing current vibrational responses against reference measurements and providing real-time alerts when degradation is detected. The system processes vibration signals, analyzes changes in resonant frequencies and damping characteristics, and provides feedback about pipeline condition, enabling operators to take corrective action before failures occur.
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 system enables non-intrusive, cost-effective, and frequent monitoring of pipeline integrity, preventing leaks and reducing maintenance costs by detecting issues before they become severe, allowing for timely repairs and minimizing downtime.
Implementation Method 1
vibrate a portion of the pipeline by sending a drive signal of predetermined frequency and amplitude to the at least one vibration generator
Implementation Method 2
receive a vibrational response to the vibration from the at least one vibration sensor
Implementation Method 3
compare the vibrational response to one or more previous vibrational responses of the pipeline and indicate a fault condition if the vibrational response differs
Data Source
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Figure 3~4
AI summary
A vibratory pipeline diagnostic system (100) is provided. The system (100) comprises at least one vibration generator (104) adapted to be affixed to a pipeline, at least one vibration sensor (107) adapted to be affixed to the pipeline, and a processing device (111) in communication with the at least one vibration generator (104) and the at least one vibration sensor (107). The processing device (111) is configured to vibrate a portion of the pipeline using the at least one vibration generator (104), receive a vibrational response to the vibration from the at least one vibration sensor (107), compare the vibrational response to one or more previous vibrational responses of the pipeline, and indicate a fault condition if the vibrational response differs from the one or more previous vibrational responses by more than a predetermined tolerance.