Explosion-Proof Housing Frame With Pressure-Relief Support Tubes
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Solution Overview
Problem
There is a need for explosion-protected housings with thin wall thicknesses and large dimensions that ensure pressure resistance while preventing ignition of gases or particles outside the housing during an explosion.
Innovation Solution
A skeletal frame with elongated support elements, such as hollow profiles, is used to create a pressure-resistant capsule, featuring a modular system with different basic element types that can be assembled to form various frame sizes, allowing for gas exchange without igniting the atmosphere outside, and includes pressure relief bodies to manage explosion pressure and prevent ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If thin wall thicknesses are used for large housings, then material usage and weight are reduced, but pressure resistance is compromised
Solution Approach 1:
The housing is divided into a frame structure composed of multiple support elements rather than a solid monolithic structure. This segmentation allows thin-walled components to be arranged in a configuration that collectively provides pressure resistance, resolving the contradiction between using less material and maintaining strength.
Solution Approach 2:
The frame combines thin-walled support elements with strategic internal cavities and reinforcement structures. This composite approach allows the overall structure to achieve pressure resistance equivalent to or greater than solid structures while using significantly less material.
2Strength
If internal cavities are added to enclosure walls, then structural rigidity is increased, but device complexity increases
Solution Approach 1:
The support elements serve multiple functions simultaneously: they provide structural rigidity, create pressure relief pathways, and define the housing geometry. This multi-functionality reduces the need for separate components, thereby managing complexity while achieving multiple structural goals.
Solution Approach 2:
The frame is segmented into modular support elements that can be independently manufactured and assembled. This segmentation simplifies manufacturing and assembly processes despite the complex overall structure, as each module can be produced using standard techniques and then combined.
3Reliability
If pressure relief pathways are created for explosion venting, then safety is improved, but structural integrity may be compromised
Solution Approach 1:
Pressure relief pathways are created by utilizing the internal cavities of the support elements themselves rather than adding separate vent channels. This three-dimensional utilization of existing structural space provides pressure relief functionality without compromising the external structural integrity of the housing walls.
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 enables the construction of explosion-protected housings with thin walls and large dimensions that effectively manage explosion pressure and prevent ignition of gases or particles outside, ensuring safety and efficiency in explosive environments.
Implementation Method 1
the interior of the housing is fluidically connected to the interior space of the receiving support element in order to dissipate explosion pressure by venting combusted and uncombusted gas from the interior of the housing into the interior of the support element
Implementation Method 2
The frame, which in some embodiments can also be described as a skeletal support, serves both a load-bearing and stabilizing function for the entire housing structure and a pressure-relieving function
Data Source
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AI summary
The invention relates to a frame (20) for an explosion-proof housing (10). The frame (20) is composed of support elements (21). Preferably, the support elements (21) are square tubes, which are provided with elongate rectangular openings (27), which are preferably closed by welded or otherwise fastened, flame-proof mesh (31). The square tubes (21) of the embodiment are joined to form a skeletal frame (20), which supports the housing structure (support frame). Preferably metal plates (37 to 40) (for example stainless steel or aluminium) or even plastic plates are fastened to the outside of the frame (20) by bonding and/or welding, thereby closing the housing (10). Blow-out vents (17), which can be closed with flame-proof mesh (31), are preferably provided at suitable points of the housing (10), such as on the base (15) or on the end faces (14). According to the invention, thanks to the load-bearing and stabilizing support frame (20), which simultaneously contributes to reducing pressure, thin wall thicknesses are possible for the surface elements (37 to 40), for example plates, as are large housing dimensions, while simultaneously guaranteeing a pressure-resistant encapsulation.