Flashback Preventer Protruding Flame Trap Design
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Solution Overview
Problem
Conventional flame arresters require significant material and space due to the need for stable metallic enclosing cages for heat dissipation and adequate endurance burn safety, making them bulky and costly.
Innovation Solution
A flame arrester design that protrudes from a wall opening by at least one-fifth of its height, utilizing thermal radiation for heat dissipation through a thin metal sheet and minimal mechanical stabilization, reducing mass and space requirements while maintaining effective energy dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stable metallic enclosing cage is used for heat dissipation, then endurance burn safety is improved, but device complexity and space requirement increase
Solution Approach 1:
The invention extracts the flame arrester from the conventional stable metallic enclosing cage and installs it directly in a wall opening. The enclosing cage is completely removed, replacing it with a minimal mechanical stabilization structure that only provides necessary support while allowing effective heat dissipation to the surrounding air, thus simplifying the construction while maintaining safety
Solution Approach 2:
The invention replaces the complex mechanical heat dissipation system (metallic enclosing cage) with a simpler thermal radiation-based heat dissipation system. The flame arrester relies on thermal radiation to dissipate heat directly to the surrounding air, eliminating the need for a massive metallic enclosure and reducing both complexity and material requirements
2Reliability
If a stable metallic enclosing cage is used for heat dissipation, then endurance burn safety is improved, but weight increases
Solution Approach 1:
The invention removes the heavy metallic enclosing cage from the flame arrester construction. Only minimal mechanical stabilization elements remain, which are sufficient to hold the flame arrester in place while allowing the thin metal sheet to dissipate heat effectively through thermal radiation, thus dramatically reducing the overall weight
Solution Approach 2:
The invention changes the heat dissipation mechanism from conductive heat dissipation through a massive metallic cage to radiative heat dissipation from a thin metal sheet surface. This parameter change in the heat dissipation approach allows for much reduced material usage and lower weight while maintaining adequate heat dissipation capacity for endurance burn safety
3Reliability
If adequate heat dissipation is achieved through metal bodies, then endurance burn safety is improved, but space requirement increases
Solution Approach 1:
The invention extracts the flame arrester from the conventional bulky metallic enclosing cage design and installs it directly in a wall opening with minimal surrounding structure. The thin metal sheet construction requires far less space for heat dissipation compared to traditional metal bodies, reducing the overall volume while maintaining safety
Solution Approach 2:
The invention replaces the space-intensive mechanical heat dissipation system (metallic enclosing cage) with a compact thermal radiation system. The thin metal sheet surface area is sufficient for effective heat dissipation through radiation, eliminating the need for large-volume metallic structures and significantly reducing the space requirement
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 design enables efficient long-term fire protection with reduced material usage and space, effectively preventing flame transmission even during prolonged burning, suitable for highly flammable gases like hydrogen, and is adaptable to changing flow velocities.
Implementation Method 1
utilizing thermal radiation for heat dissipation
Data Source
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AI summary
A flashback preventer with a cylindrical flame trap (8, 8', 21) which is installed in a wall (6, 6'), separating an at-risk region (13) from an external region (15), and has a cross-sectional surface area containing a plurality of throughflow gaps and a height determining the length of the throughflow gaps and an underside (9) directed towards the at-risk region (13), and an upper side (16) directed towards the external region (15), can be formed with a low mass and high energy-dissipation efficiency in that the flame trap (8, 8', 21) is inserted into an opening (7, 7') in the wall (6, 6'), said opening corresponding to the cross-sectional surface areas of the flame trap (8, 8', 21), and has at least a fifth of its height projecting beyond the wall (6, 6') into the external region (15).