Flexible Hose Joint with Segmented Gas Path for Explosion Prevention
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Solution Overview
Problem
Conventional flexible hose assemblies with joints discharge high-pressure and high-temperature gas suddenly, exceeding legal leakage limits and risking gas explosions when sparks occur during wire cable installation in explosion-proof pipes.
Innovation Solution
A flexible hose assembly design featuring an extension section integrally formed at one end of a bellows tube with an annular protrusion, coupled with a connection member and a coupling nut, allowing gas to travel along the outer surface of the extension section before discharge through a screw coupling, thereby lengthening the gas path and reducing pressure and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas is discharged through the engagement section between the connection member and adapter, then the bellows tube is protected from excessive gas pressure, but the amount of leakage gas exceeds the reference value specified in the law
Solution Approach 1:
The gas discharge path is segmented into two distinct sections: the engagement section between the connection member and adapter, and the screw-coupling section between the coupling nut and adapter. This segmentation allows gas to be discharged in a controlled manner through multiple pathways, distributing the leakage quantity across different sections and preventing excessive gas accumulation while maintaining pressure protection
Solution Approach 2:
The adapter serves as an intermediary component that mediates between the bellows tube and the connection/coupling members. It provides a controlled interface for gas discharge, allowing the system to protect the bellows tube from excessive pressure while regulating the amount of leakage gas through its structural design and positioning
2Productivity
If high pressure and high temperature gas is discharged suddenly, then the gas can be released quickly, but gas explosion may occur when spark is generated
Solution Approach 1:
The gas discharge path is divided into multiple sections (engagement section and screw-coupling section), which segments the gas flow and prevents sudden, concentrated discharge. This segmentation creates a more gradual release mechanism that reduces the risk of gas accumulation and subsequent explosion while still allowing effective pressure relief
Solution Approach 2:
The patent converts the potentially harmful sudden discharge of high-pressure gas into a beneficial controlled release mechanism. By designing the engagement section and screw-coupling section to provide regulated discharge pathways, the system transforms the harmful rapid gas release into a controlled, gradual discharge that prevents explosion while still achieving pressure relief
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 prevents sudden gas discharge, adhering to explosion-proof standards by gradually releasing gas, thus preventing gas explosions and ensuring safe operation.
Implementation Method 1
gas discharged from the bellows tube flows along the outer surface of the extension section through the gap and is discharged to an outside through a screw coupling section between the connection member and the coupling nut
Data Source
AI summary
A joint apparatus for prevention of explosion includes a bellows tube including an extension section integrally formed at one end of the bellows tube and an annular protrusion interposed between the extension section and the bellows tube; a coupling nut coupled with the bellows tube; and a connection member coupled with the bellows tube while being supported by the annular protrusion. A gap is formed between a the extension section and the connection member and gas discharged from the bellows tube flows along the outer surface of the extension section through the gap and is discharged to an outside through a rear section of the annular protrusion. Since a travelling path of the gas is lengthened, pressure and temperature of the gas are lowered, so that gas explosion is prevented.