Fluid Leak Test Device Zone Segmentation
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Solution Overview
Problem
Conventional fluid testing systems fail to distinguish between internal and external leaks in complex components, leading to false determinations of faulty components and increased scrap rates and production costs.
Innovation Solution
A fluid leak testing device with a reference volume zone, a critical zone, and an internal zone, all at the same fluid pressure, which allows for the identification and removal of environmental effects on leak detection, thereby differentiating between non-important internal leaks and important external leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fluid testing is used to detect leaks in complex components, then leak detection capability is provided, but internal leaks are incorrectly identified as external leaks leading to false fault determinations
Solution Approach 1:
The testing device segments the component into multiple zones (critical zone, internal zone, reference zone) with separate fluid pathways and measurement systems. This allows independent monitoring of each zone to distinguish between internal and external leaks, resolving the false determination problem while maintaining detection accuracy.
Solution Approach 2:
A reference zone is introduced as an intermediary element that experiences environmental effects but is isolated from the component's internal leakage paths. By comparing measurements from the reference zone with those from the critical zone, the system can subtract environmental influences and accurately identify true external leaks without false positives from internal leaks.
2Measurement precision
If conventional testing systems monitor fluid pressure to detect leaks, then leak detection is achieved, but environmental effects on pressure measurements cannot be distinguished from actual leaks
Solution Approach 1:
The reference zone serves as a mediator that experiences the same environmental conditions (temperature, pressure fluctuations) as the critical zone but is isolated from the component's internal leakage. By measuring pressure changes in the reference zone and subtracting these from critical zone measurements, the system eliminates environmental noise and isolates true leak signals.
Solution Approach 2:
The system monitors multiple parameters (pressure, temperature, flow rate) across different zones and uses differential analysis to separate environmental effects from actual leaks. By tracking parameter changes in both the reference and critical zones simultaneously, the system can identify and remove environmental influences from the leak detection calculation.
3Productivity
If conventional fluid testing is used, then testing capability is provided, but scrap rates increase due to false fault determinations from undifferentiated internal leaks
Solution Approach 1:
The testing system segments leak detection into distinct categories (internal vs. external) by creating separate measurement pathways for different zones. This allows the system to identify which leaks are acceptable (internal) and which require rejection (external), thereby reducing false rejections and lowering scrap rates while maintaining testing throughput.
Solution Approach 2:
The system provides feedback by continuously monitoring fluid flow and pressure in both the critical zone and reference zone, comparing the differential measurements in real-time. This feedback mechanism enables immediate identification of true external leaks versus internal leaks, allowing for accurate fault determination and reducing unnecessary scrapping of acceptable components.
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 provides accurate detection of external leaks by eliminating false determinations caused by internal leaks, reducing scrap rates and production costs by ensuring precise leak measurement.
Implementation Method 1
a first mass flow meter in communication with the pressure regulator, a second mass flow meter in communication with the regulator
Implementation Method 2
The fluid leak testing device may be configured to measure a fluid leak in a test device
Data Source
AI summary
A testing device and method for improved detecting of fluid leaks considered important, for example, fluid leaks that would be external to a component or machine are disclosed. The testing device includes a conventional infinite fluid pressure supply source which supplies equal fluid pressure to a reference volume zone, a critical zone and an internal zone, the critical zone and internal zone may be positioned inside of a device being tested.