Hydrophone Leak Detection in Pressurized Large-Diameter Pipes
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Solution Overview
Problem
Current water leak detection methods in large diameter pipes under high pressure are either complex, expensive, inaccurate, or limited to detecting single leaks, and fail to provide reliable and cost-effective solutions for pinpointing leak locations across entire pipe networks.
Innovation Solution
A device featuring a hydrophone and electronic system that classifies sound anomalies within large diameter pipes using low-frequency sound waves, allowing for accurate leak detection and location identification without the need for floating mechanisms or complex internal structures, and utilizing communication modules for error minimization and real-time data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hydrophones are used to detect water leaks in large diameter pipes, then detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical positioning systems with acoustic field-based detection. Instead of using mechanical sensors that require precise physical positioning, the invention uses hydrophones to detect acoustic signatures of leaks, substituting mechanical complexity with acoustic field analysis. This allows accurate leak detection without complex mechanical structures.
Solution Approach 2:
The patent changes the detection parameter from mechanical position measurement to acoustic signal analysis. By monitoring acoustic parameters (sound frequency, amplitude, timing) rather than mechanical position, the system achieves high detection accuracy while avoiding complex mechanical device structures. The hydrophone converts acoustic energy into electrical signals for analysis.
2Ease of operation
If floating mechanisms are used to position the detection device, then device mobility is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces mechanical floating mechanisms with acoustic field-based positioning. Instead of using buoyancy devices, pumps, or mechanical propulsion systems to move the detector through pipes, the invention uses acoustic signal propagation and timing analysis to determine leak position. This substitutes complex mechanical mobility systems with simpler acoustic field measurements.
3Measurement precision
If pipe emptying and filling procedures are implemented, then measurement accuracy is improved, but water consumption and time loss increase
Solution Approach 1:
The patent enables continuous leak detection in pipes that remain filled with water. The hydrophone-based acoustic detection system operates effectively in the continuous water flow environment, eliminating the need to interrupt service by emptying and refilling pipes. This maintains continuous water supply while achieving accurate leak detection.
Solution Approach 2:
The patent uses the water already present in the pipe system as the detection medium. The existing water flow serves dual purposes: maintaining pipe pressure and providing the acoustic transmission medium for leak detection. This eliminates the need for additional water consumption associated with emptying and refilling procedures.
4Measurement precision
If synchronization systems are deployed across long pipe networks, then position accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses acoustic signals as intermediaries for position determination. Instead of deploying complex electronic synchronization systems with multiple sensors and clocks along the pipe network, the invention uses the acoustic wave itself as the reference signal. The timing and characteristics of acoustic signals from known reference points (such as valve locations or injection points) serve as intermediaries to calculate leak position without requiring complex synchronization infrastructure.
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
The device provides accurate, reliable, and cost-effective leak detection and location identification in large diameter pipes under high pressure, reducing measurement errors and water consumption by eliminating the need for pipe emptying and filling, while enabling efficient data transmission and synchronization across long distances.
Implementation Method 1
a sort of sphere into which it is materialised to be fitted with a hydrophone (2), a signal adaptor (32) and a processor (33) capable of classifying the signal received by the hydrophone (2)
Implementation Method 2
detect leaks in large diameter water pipes using low-frequency sound that causes an anomaly in the water of a large diameter pipe
Data Source
AI summary
A device is produced as a small sphere with neutral buoyancy, within which there is, at least, one hydrophone that is connected to a signal processor, which stores the information on a memory card and that is powered by at least one battery. This signal processor has a clock module, through which the sailing time elapsed for each audio signal received by the hydrophone is recorded in the memory. Therefore, based on the sailing time, the exact position of the detected anomalies or leaks can be ascertained. The device is complemented by a series of external synchronisation systems, laid out every certain distance, by which the position error that could be accumulated by the device is neutralised. Thus, a simple device is attained, which is cheap, solid, durable and highly effective.