Modular Gas Sampling Device with Nested Valves
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Solution Overview
Problem
Existing gas sampling devices for hydrogen tank filling stations are bulky, prone to leaks, and have a poorly adaptable structure, with ergonomics and safety being areas for improvement.
Innovation Solution
The device features control valves and a manometer housed in modular, parallelepipedal enclosures with direct fluid connections, flexible portions, and a vent valve shutter, reducing bulk and leak risks while enhancing ergonomics and safety through compact, sealed modular design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control valves are disposed in series in the first pipe, then gas circulation control is achieved, but the device bulk increases and ergonomics deteriorate
Solution Approach 1:
The patent applies nesting by placing control valves inside a common housing structure. Multiple valves are arranged in series within the same spatial envelope, allowing them to be nested within each other's operational space rather than requiring separate external mounting positions. This reduces the overall device bulk while maintaining the series configuration needed for gas circulation control.
Solution Approach 2:
The patent merges multiple control valves into a single integrated housing unit. Instead of distributing valves across separate components, they are combined within one housing that contains all necessary valve mechanisms and fluid pathways. This consolidation improves ergonomics by creating a single operable unit while controlling the volume through efficient internal arrangement.
2Adaptability or versatility
If the device structure is made adaptable and modular, then versatility improves, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the device into modular components: a housing containing control valves, a sampling tank, flexible portions, and connection elements. Each module can be manufactured separately using standardized processes, then assembled through defined interfaces. This segmentation enables adaptability through reconfiguration while keeping individual manufacturing steps relatively simple.
Solution Approach 2:
The patent implements universality through a standardized housing design that can accommodate different valve configurations and connection types. The modular architecture allows the same basic structure to serve multiple sampling scenarios by changing only the internal valve arrangement or connection interfaces, rather than designing entirely different devices for each application.
3Adaptability or versatility
If flexible portions are used to connect components, then adaptability improves, but leak risks increase
Solution Approach 1:
The patent applies beforehand cushioning by incorporating reinforcement elements within the flexible portions. These reinforcements are built into the flexible tubing or hoses before assembly, providing structural support that prevents collapse, kinking, or separation under pressure. This pre-engineered protection maintains leak resistance while preserving the flexibility needed for adaptability.
Solution Approach 2:
The patent uses composite construction for the flexible portions, combining flexible materials (such as reinforced elastomers or layered polymers) with structural reinforcement elements. This composite approach provides both the flexibility required for adaptability and the mechanical integrity needed to prevent leaks, merging the beneficial properties of different materials.
4Volume of moving object
If the device is compacted to improve ergonomics, then device bulk decreases, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies nesting to achieve compactness by placing components within each other's spaces. The control valves are nested within the housing, and internal pathways are arranged in three-dimensional configurations that maximize space utilization. This nested arrangement reduces device bulk while using standardized component dimensions to manage manufacturing precision requirements.
Solution Approach 2:
The patent employs dimensional optimization by arranging components in three-dimensional space rather than linear sequences. Fluid pathways and valve connections are routed through multiple spatial dimensions within the housing, allowing compact packaging without excessive compression of individual components. This approach reduces overall volume while maintaining accessible assembly points.
Data Source
AI summary
A device for taking a sample of gas, including a base supporting a fluid circuit, a sampling tank and a first pipe connecting the inlet connector to an inlet of the sampling tank, the first pipe having a set of valves for controlling the circulation of the gas, the circuit having an evacuation line with a control valve and includes a downstream end that opens into the atmosphere, the circuit has a second pipe and includes an analysis line having an upstream end connected to the first pipe and a downstream end provided with an analysis outlet intended to be connected to an analysis apparatus, the analysis line having at least one control valve, and wherein the outlet of one housing is connected directly to the inlet of the adjacent housing.

