Hydrogen Leak Inspection of Coupling Regions Using Flow Path Isolation
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Solution Overview
Problem
Existing technologies face challenges in efficiently inspecting hydrogen leaks from a hydrogen storage system, especially when it is mounted to equipment like a vehicle, and are time-consuming in identifying potential leak regions.
Innovation Solution
A gas leak detecting device and method that includes a test article with coupling regions, a body unit with an inner space, and a pipe member with a flow path to inspect for leaks, using reaction members to detect gas and a blocking member to isolate coupling regions for separate inspection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hydrogen storage system is mounted to equipment like vehicle, then adaptability is improved, but detection difficulty increases
Solution Approach 1:
The inspection system is divided into separate functional modules: a test article containing the hydrogen storage system, a body unit with inner space for accommodation, and a pipe member with flow path for gas transport. This segmentation allows the system to be mounted to equipment while maintaining independent leak detection capability through dedicated coupling regions positioned within the inner space.
Solution Approach 2:
The pipe member acts as an intermediary element with a flow path that communicates with the inner space. This flow path serves as a mediator to transport leaked hydrogen gas from the coupling regions to the detection device, enabling detection even when the system is mounted to equipment outside the inner space.
2Loss of time
If all coupling regions are inspected simultaneously, then inspection time is reduced, but detection precision decreases
Solution Approach 1:
The inspection process is segmented by dividing the inner space into multiple regions, each containing specific coupling regions. A blocking member is introduced to selectively block access to specific coupling regions, allowing systematic inspection of each region separately. This segmentation enables both time efficiency through structured inspection and precision through isolated detection of each coupling region.
Solution Approach 2:
The blocking member is designed to be movable between different positions within the inner space. By dynamically repositioning the blocking member, the system can selectively allow or prevent gas flow to different coupling regions, enabling dynamic control over which regions are inspected simultaneously and thereby optimizing both time and precision.
3Device complexity
If multiple coupling regions are located in same inner space, then device complexity is reduced, but detection precision decreases
Solution Approach 1:
While multiple coupling regions are located in the same inner space to simplify device structure, the inner space is further segmented into multiple regions using a blocking member. This segmentation allows each coupling region to be inspected independently by controlling gas flow paths, thereby maintaining detection precision despite the simplified overall structure.
Solution Approach 2:
The blocking member serves as an intermediary element that controls gas flow between different coupling regions within the same inner space. By introducing this mediator, the system can isolate and inspect specific coupling regions individually, maintaining detection precision while keeping the overall device structure simple.
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 efficient detection of hydrogen leaks from multiple regions within a hydrogen storage system, even when mounted, reducing inspection time and ensuring safety by quickly identifying sealed and unsealed coupling regions.
Implementation Method 1
whether or not the first coupling region or the second coupling region is sealed may be inspected by using a reaction member which is provided on an inner surface of the pipe member defining the flow path (U) and has a color that is changed when reacting with a certain gas
Data Source
AI summary
A gas leak detecting method includes a test article preparation operation of preparing a test article that includes a first coupling region, in which a second component is coupled to one side of a first component, and a second coupling region, in which a third component is coupled to one side of the second component, a test article arrangement operation of arranging the test article in an inner space of a body unit, and a sealing inspection operation of examining a gas discharged from the inner space and inspecting whether or not the first coupling region or the second coupling region is sealed. In the test article arrangement operation, each of the first coupling region and the second coupling region is located inside the inner space.