Integral Plug Design for High-Pressure Gas Cylinder Sealing

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Solution Overview

Problem

Conventional high-pressure gas cylinders have gaps between separable components, leading to incomplete sealing and gas leakage, and a complex manufacturing process with multiple assembly steps, resulting in gas waste and increased costs.

Innovation Solution

An integral plug design with a fixed sealing sheet and body, eliminating gaps and simplifying the manufacturing process by sealing the cylinder immediately upon gas filling, using a container with an air passage and a plug that includes a body and sealing sheet, where the body has a hole communicating with the interior and the sealing sheet covers it, forming a non-detachable unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If separable components (sealing sheet and plug) are used, then ease of manufacture is improved, but sealing reliability deteriorates due to gaps between components

Engineering Contradiction:

Improveease of manufactureVSAvoidsealing reliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The sealing sheet and plug body are merged into a single integral structure where the sealing sheet is fixed to the plug body, eliminating the gap between separate components while maintaining ease of manufacture through unified construction

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If multiple sealing components are used, then sealing reliability is improved, but device complexity increases and manufacturing steps increase

Engineering Contradiction:

Improvesealing reliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Multiple sealing components (sealing sheet and plug body) are merged into a single integrated plug structure, reducing device complexity while maintaining sealing reliability through the unified design that eliminates gaps between components

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple sealing components are used, then sealing reliability is improved, but loss of time increases due to more assembly steps

Engineering Contradiction:

Improvesealing reliabilityVSAvoidassembly time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The sealing sheet and plug body are combined into an integral structure, reducing the number of assembly steps and time required while maintaining sealing reliability through the gap-free unified design

Inventive Principle:

Principle #5Merging (Combining)

4Ease of repair

If separable components are used, then ease of repair is improved, but loss of substance increases due to gas leakage through gaps

Engineering Contradiction:

Improveease of repairVSAvoidgas loss

Core Design Contradiction:

Ease of repairVSLoss of substance

Solution Approach 1:

The sealing sheet and plug body are merged into an integral structure that eliminates gaps and prevents gas leakage, reducing substance loss while the overall plug remains replaceable for maintenance purposes

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11014524B2High-pressure gas cylinder

Publication Date: 2021.05.25 G SHANG METAL CORP

AI summary

An improved high-pressure gas cylinder is provided, which includes a container and a plug. The container has an air passage which communicates an interior of the container with an exterior of the container. The plug includes a body and a sealing sheet, wherein the body is fixed in the air passage. The body has a hole which communicates with the interior of the container, and the sealing sheet covers the hole. The body and the sealing sheet are integral. Whereby, the plug is able to tightly seal the container to reduce the possibility of wasting gas; additionally, the manufacturing process would be less complicated and efficient with the simplified plug.