Dual-Media Leak Detection for Large and Microscopic Leaks
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Solution Overview
Problem
Current leak detection methods in fluid systems are inadequate for detecting both large and microscopic leaks, especially in noisy environments and large systems, as they often require specialized devices or are ineffective due to the size of dye or vapor particles, which can be hindered by microscopic orifices.
Innovation Solution
A system and method utilizing a smoke generator to produce both visual vapor and a detectable gas, such as hydrogen, which can pass through small leaks, allowing for detection using a gas detector in multiple sensitivity modes, enabling the identification of both large and small leaks with a single test.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual vapor or smoke is injected into the system to detect leaks, then large leaks can be easily identified, but microscopic leaks cannot be detected because the vapor particles are too large to pass through microscopic orifices
Solution Approach 1:
The detection capability is segmented into two distinct detection mechanisms: visual vapor detection for large leaks and electronic gas detector for microscopic leaks. This segmentation allows each detection method to be optimized for its specific leak size range, resolving the contradiction between detecting large leaks visually and detecting microscopic leaks with precision.
Solution Approach 2:
The patent introduces an intermediary substance (detectable gas such as hydrogen or helium) that can pass through microscopic orifices and be detected by electronic gas detectors. This intermediary enables the detection of microscopic leaks without requiring the visual vapor to pass through the same tiny openings.
2Measurement precision
If listening devices are used to detect leaks by harmonic vibration, then some leaks can be detected, but the devices are useless in loud environments and not all leaks create detectable vibrations
Solution Approach 1:
The patent replaces the mechanical listening device method with an electronic detection system. Instead of relying on acoustic vibrations that are susceptible to environmental noise, the system uses electronic gas detectors to sense the presence of detectable gases, eliminating the harmful effect of loud environments on detection accuracy.
3Measurement precision
If dye is injected into the system to detect leaks, then leak locations can be identified, but the dye molecules are held back by microscopic leaks and cannot pass through, and the dye may harm critical sensors or catalytic devices
Solution Approach 1:
The patent uses an intermediary detectable gas (such as hydrogen or helium) instead of dye. This gas can pass through microscopic orifices to identify leak locations while being harmless to sensors and catalytic devices, eliminating the harmful effects associated with dye injection.
Solution Approach 2:
The patent changes the physical parameter of the detection substance from liquid dye molecules to gaseous molecules with smaller kinetic diameter. This parameter change allows the detection substance to pass through microscopic leaks while eliminating the harmful effects of dye on sensors and catalytic converters.
4Ease of operation
If a single detection method is used for all leak sizes, then the system is simple to operate, but it cannot effectively detect both large and microscopic leaks
Solution Approach 1:
The patent creates a universal leak detection system that can detect all leak sizes (large, medium, and microscopic) using a single integrated system. The system combines visual vapor detection for large leaks with electronic gas detector for microscopic leaks, providing multi-functionality that covers the entire leak size spectrum while maintaining ease of operation.
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 allows for universal leak detection in various fluid systems, effectively locating large, medium, and microscopic leaks by visually identifying large leaks and using a gas detector to detect the gaseous byproduct, improving detection accuracy and ease of use compared to conventional methods.
Implementation Method 1
heating a smoke agent to generate visual vapor and a gaseous byproduct
Implementation Method 2
injecting the visual vapor and gaseous byproduct into a fluid system to pressurize the fluid system
Implementation Method 3
detecting leakage of the gaseous byproduct from the fluid system to indicate the presence of a leak in the fluid system
Data Source
AI summary
A universal leak detection method for detecting both small and large leaks. The method includes the steps of: injecting smoke and a detectable gas into a fluid system to pressurize the fluid system, the smoke and detectable gas both being capable of passing through a large leak in the fluid system, and the visual smoke particles being inhibited from passing through a small leak in the fluid system and the detectable gas being capable of passing through a small leak in the fluid system; and detecting a leak by detecting at least one of the smoke and the detectable gas, wherein detection of smoke is indicative of the fluid system having a large leak and detection of detectable gas without smoke.