Optical fiber heating furnace exhaust recovery and purification recycling system and method thereof

Abstract

The invention discloses an optical fiber heating furnace exhaust recovery and purification recycling system, which is characterized by comprising a recovering and purifying unit, a collecting and compressing unit, a purifying unit and a gas supply unit, wherein the recovering and purifying unit is used for recovering and purifying helium exhaust from an optical fiber heating furnace; the collecting and compressing unit is connected with the recovering and purifying unit and comprises a controller and a flexible helium balloon and a compressor connected in sequence along the flow direction of helium gas, and the controller controls the operation of the compressor according to the amount of helium in the flexible helium balloon; the purifying unit is used for purifying helium gas supplied from the collecting and compressing unit; and the gas supply unit supplies helium gas to the optical fiber heating furnace and stores helium gas from the purifying unit. The invention also discloses a recycling method of the system. The optical fiber heating furnace exhaust recovery and purification recycling system has the technical features of ensuring high purity and high recovery rate of the helium gas, and being able to operate reliably and fully automatically in an unattended manner for a long time.

Description

Technical field [0001] The invention relates to the field of optical fiber manufacturing, in particular to a helium recovery and purification device and method in optical fiber production. Background technique [0002] Helium is a non-renewable scarce strategic resource, which is used in aerostats, inert protection, chromatographic analysis, heat conduction, leak detection, optical fiber, diving breathing and other fields. At present, the world's proven helium reserves are about 49 billion cubic meters. How to reasonably and efficiently utilize the existing helium resources has become a technical problem in many application fields. In the field of optical fiber production, the typical drawing process is to fix the optical fiber preform on the top of the tower, and then feed the preform into the heating furnace through the feeding mechanism. The speed is generally 0.02~0.3mm / s. When the tip of the preform is heated to 2000 When the temperature is about ℃, the viscosity of the tip...

AI Technical Summary

Problems solved by technology

The helium collected by the gas collection tank in real time is affected by the helium content in the fiber drawing cooling tower, and there are limitations in matching the work of the booster pump. For example, the booster pump continues to work at high power, while the gas collection tank only collects A small amount of waste helium affects the working efficiency of the whole system

Images