Rotating Drum Leak Detection Apparatus for Pipe Inspection
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Solution Overview
Problem
Current leak detection methods in pipes require user experience and are not scalable or efficient, especially in complex pipeline configurations, and are limited by the need for external noise resistance and material specificity.
Innovation Solution
A leak detection apparatus with a carrier and detector system that uses a rotating drum with flexible material to sense pressure gradients, allowing for autonomous detection of leaks at any angle around the pipe circumference, eliminating the need for user experience and being insensitive to pipe material and fluid medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If acoustic correlation methods are used with two sensors placed on either side of the leak, then leak location can be identified, but the method is ineffective in plastic pipes and doubtful in general applicability
Solution Approach 1:
The patent replaces acoustic detection methods with a pressure gradient-based mechanical detection system. A sensing element measures pressure differences across the pipe wall, directly detecting leaks through pressure differential rather than acoustic signals. This substitution enables effective leak detection in plastic pipes where acoustic methods fail.
Solution Approach 2:
The patent introduces a pressure-sensitive sensing element as an intermediary between the leak source and the detection system. This sensor measures pressure gradients across the pipe wall, serving as a mediator that translates physical pressure changes into detectable signals, enabling universal application across different pipe materials.
2Measurement precision
If acoustic leak detection is performed manually with listening rods or geophones, then leaks can be identified and located, but the method is slow and not scalable to network range
Solution Approach 1:
The patent creates a self-contained detection system that autonomously measures pressure gradients and identifies leaks without requiring manual operation. The sensing element automatically detects pressure differentials and generates leak location data, enabling rapid inspection of entire pipeline networks without human intervention at each measurement point.
Solution Approach 2:
The patent replaces manual acoustic inspection with an automated pressure gradient measurement system. The mechanical sensing element continuously or periodically measures pressure differences, automatically identifying leaks and their locations, thereby dramatically increasing detection speed and network scalability.
3Reliability
If in-pipe inspection is performed to improve accuracy and robustness, then leak detection becomes less sensitive to external noise, but the system requires complex deployment and operator experience
Solution Approach 1:
The patent replaces complex in-pipe inspection systems with a pressure gradient sensing method that can be deployed externally on the pipe surface. The sensing element measures pressure differences across the pipe wall from the outside, eliminating the need for internal deployment while maintaining immunity to external noise since the measurement is differential and localized.
4Measurement precision
If remote visual inspection equipment is used to assess pipe condition, then leaks can be detected in gas or empty liquid pipelines, but the system is suitable only for off-line inspection and requires human operation
Solution Approach 1:
The patent replaces visual inspection methods with pressure gradient measurement that works in pressurized liquid pipelines. The sensing element detects pressure differences caused by leaks directly, regardless of pipeline contents or pressure conditions, enabling application in water distribution systems where visual methods cannot be used.
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 reliable and robust leak detection in pipes of various sizes and materials, operating autonomously and efficiently, with the ability to detect leaks at high speeds and avoid false alarms, making it suitable for wide-ranging applications in gas, oil, and water pipelines.
Implementation Method 1
The flexible material will be drawn into contact with a wall of the pipe at a leak location, thereby producing a torque on the drum
Data Source
AI summary
Leak detection apparatus for deployment in a pipe. The apparatus includes a carrier disposed for motion along the pipe and a detector connected to move with the carrier in an axial direction. The detector comprises a drum mounted for rotation about pitch and yaw axes. A flexible material is mounted on, and extends from, the drum and at least two sensors responsive to drum rotation are provided. The flexible material will be drawn into contact with a wall of the pipe at a leak location, thereby producing a torque on the drum, causing the drum to rotate, and the at least two sensors to generate signals from which leak location is determined.