Explosion Pressure Relief Vent With Protected Flame Arrester
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Solution Overview
Problem
Existing explosion pressure relief devices, such as the Q-tube and Q-Box, require significant space and are prone to contamination in dirty environments, which can affect their functionality.
Innovation Solution
The device incorporates a Berst disc that protects the flame crossing protection from external influences, while maintaining a compact design and using a flame lock that is not exposed to contamination. Additionally, the device can be enhanced with sound-absorbing insulation materials to improve sound insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flame arrester is arranged in front of the rupture disc, then the flame arrester is protected from contamination by substances in the protected object, but the device requires more space and the relief opening must be larger
Solution Approach 1:
The patent inverts the conventional arrangement by placing the rupture disc in front of the flame arrester instead of behind it. This inversion allows the flame arrester to be protected from external contamination while enabling a more compact design where the flame arrester can be integrated closer to or within the rupture disc structure, reducing overall device volume.
2Volume of stationary object
If the flame arrester is arranged behind the rupture disc, then the device requires less space and the relief opening can be larger, but the flame arrester is exposed to contamination from external environments
Solution Approach 1:
The patent applies nesting by integrating the flame arrester within the rupture disc structure or placing it in a protected cavity formed by the rupture disc assembly. This nested arrangement allows the flame arrester to be positioned behind the rupture disc for compactness while being shielded from external contamination by the rupture disc itself or its mounting structure.
3Reliability
If a large-volume flame arrester is used, then the relief opening can be significantly larger improving flame extinction, but the device requires more space
Solution Approach 1:
The patent applies local quality by concentrating the flame arrestment function in a compact, high-efficiency configuration rather than using a large-volume structure. The flame arrester is designed with optimized local characteristics (such as mesh density, layer arrangement, or material properties) that provide effective flame extinction in a reduced volume, matching the flame arrestment capability of larger designs without the associated space requirements.
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
The solution provides effective explosion pressure relief with reduced space requirements and improved resistance to contamination, while also offering enhanced sound insulation to minimize noise leakage.
Implementation Method 1
the flow velocities of the gases through the flame arrester can be lower than the flow velocities in the area of the rupture disc, which facilitates the cooling of the hot gases and the extinguishing of the flames
Implementation Method 2
The flame arrester can, in particular, be significantly larger than the relief opening of the opened rupture disc
Implementation Method 3
In the event of a pressure increase in the object or device to be protected, for example, due to an explosion, the rupture disc opens and releases the opening through which gases can escape
Implementation Method 4
the device can be enhanced with sound-absorbing insulation materials to improve sound insulation
Data Source
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AI summary
The invention relates to a device (1) for explosion pressure relief of a container, a housing, an enclosure, a conduit or the like, in which an explosive mixture, in particular an explosive atmosphere, is present or may be formed, - with a flame arrestor (11) and - with a rupture disc (12), - wherein the rupture disc (12) is arranged behind the flame arrestor (11) in the direction in which gases pass through the device in the event of pressure relief.