Optical Fiber Cooling Device Inert Gas Preliminary Chamber
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Solution Overview
Problem
The use of hydrogen gas for cooling in optical fiber manufacturing poses a risk of explosion due to its combustible nature, requiring measures to prevent atmospheric oxygen from entering the cooling device.
Innovation Solution
An optical fiber manufacturing apparatus is designed with a preliminary chamber at the upper end of the cooling device, where inert gas is supplied to replace the atmosphere around the glass fiber before it enters the cooling device, thereby preventing oxygen from entering the hydrogen-cooled cooling device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If hydrogen gas is used for cooling the glass fiber, then cooling efficiency is improved due to high thermal conductivity, but explosion risk increases due to combustibility
Solution Approach 1:
A preliminary chamber is introduced as an intermediary component between the drawing furnace and cooling device. This chamber serves as a buffer zone where atmospheric oxygen is excluded before hydrogen gas enters the cooling device, thereby mediating between the need for efficient hydrogen-based cooling and the hazard of atmospheric oxygen mixing with hydrogen
Solution Approach 2:
The preliminary chamber is filled with inert gas to create an inert atmosphere that prevents oxygen from reaching the hydrogen gas in the cooling device. This inert environment acts as a protective barrier, eliminating the explosive mixture risk while allowing hydrogen to continue providing efficient cooling in the cooling device
2Device complexity
If atmospheric oxygen is present in the cooling device, then no additional safety infrastructure is needed, but explosion risk increases due to hydrogen-oxygen mixture
Solution Approach 1:
The preliminary chamber performs preliminary action by excluding atmospheric oxygen from the system before hydrogen gas enters the cooling device. This advance preparation prevents the formation of explosive mixtures without requiring complex real-time monitoring or multiple safety systems
Solution Approach 2:
The preliminary chamber acts as an intermediary barrier that simplifies safety infrastructure by providing a single, straightforward mechanism (inert gas filling) to prevent oxygen-hydrogen mixing, rather than requiring complex control systems, sensors, or multiple isolation mechanisms
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 configuration effectively prevents atmospheric oxygen from entering the cooling device, mitigating the risk of hydrogen gas explosion and ensuring safe and efficient cooling of the glass fiber.
Implementation Method 1
inert gas is supplied to replace the atmosphere around the glass fiber before it enters the cooling device
Implementation Method 2
a cooling device configured to cool the glass fiber; a hydrogen gas supply device configured to supply hydrogen gas into the cooling device
Data Source
AI summary
An optical fiber manufacturing apparatus includes: a drawing furnace configured to heat and fuse an optical fiber preform and draw the optical fiber preform to obtain a glass fiber; a cooling device configured to cool the glass fiber; and at least one preliminary chamber provided at an upper end of the cooling device. The optical fiber manufacturing apparatus further includes: a hydrogen gas supply device configured to supply hydrogen gas into the cooling device; and an inert gas supply device configured to supply inert gas into the at least one preliminary chamber.