Irrigation Pipe Blowout Detection via Bubble Trapping
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Solution Overview
Problem
Existing methods fail to detect micro perforations in irrigation pipes during manufacturing, leading to undetected blowouts that cause production line shutdowns and costly field repairs after they manifest as leaks in irrigation projects.
Innovation Solution
A method involving differential air pressure between the pipes and a vacuum tank filled with cooling liquid to create bubbles at defects, which are captured and detected by a sensor, triggering an alert to stop production or alert operators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection or simple sensors are used to detect holes in irrigation pipes, then large holes can be detected, but micro perforations remain undetected
Solution Approach 1:
The patent introduces an intermediary substance (air or gas) that flows through the pipe and escapes as bubbles through any perforations, even micro-sized ones. This intermediary converts the invisible micro-defect into visible bubbles that can be detected by simple optical sensors, thereby achieving high detection precision without requiring complex inspection equipment
Solution Approach 2:
The patent changes the detection parameter from direct visual inspection of the pipe wall to observation of bubble formation and escape patterns. By monitoring parameters such as bubble frequency, size, and flow rate, the system can detect micro-perforations that would be invisible through conventional inspection methods
2Productivity
If micro perforations are not detected during manufacturing, then production continues without interruption, but the pipes cause failures and require costly field repairs after installation
Solution Approach 1:
The patent implements preliminary detection of micro-perforations during the manufacturing process itself, before the pipes are installed. By detecting and flagging defective pipes at the production stage, the system prevents defective pipes from reaching the field, thereby ensuring reliability without interrupting the overall production flow - only defective pipes are removed, not the entire production line
Solution Approach 2:
The patent establishes a feedback loop where detection results from the bubble flow test immediately inform the production process. Pipes that show abnormal bubble patterns are automatically identified and removed from the production line, providing real-time feedback that ensures only high-quality pipes proceed to packaging and shipment
3Measurement precision
If the vacuum tank is filled with cooling liquid to create negative pressure, then bubbles from blowouts are generated and can be detected, but the system complexity increases
Solution Approach 1:
The patent makes the vacuum tank serve multiple functions: it acts as both a cooling chamber for the extruded pipe and a detection chamber for bubble generation. The cooling liquid in the tank simultaneously cools the pipe and provides the negative pressure environment needed for bubble formation, thereby reducing overall system complexity despite the sophisticated detection capability
Solution Approach 2:
The patent merges the cooling process and the detection process into a single integrated operation. The same vacuum tank and cooling liquid that are necessary for pipe cooling also create the conditions for bubble generation and detection, combining two essential functions into one unified system rather than requiring separate cooling and detection systems
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
Enables real-time detection of blowouts during manufacturing, preventing undetected leaks and reducing warranty claims by identifying micro perforations before they cause significant issues.
Implementation Method 1
differential air pressure between the pipes and a vacuum tank filled with cooling liquid to create bubbles at defects
Implementation Method 2
negative pressure of the vacuum tank
Data Source
Figure 1
Figure 2
AI summary
Disclosed is a method for detecting a blowout in an irrigation pipe. The irrigation pipe is extruded. Further a positive air pressure may be created by circulating air through the irrigation pipe. The irrigation pipe with positive air pressure is then fed into a tank, wherein the tank comprises a coolant liquid. Further at least one air bubble is trapped at a surface of the tank.