Optical fiber wiredrawing annealing heat preservation device

Abstract

The invention relates to an optical fiber wiredrawing annealing heat preservation device convenient for cleaning and capable of improving the production efficiency and quality of an optical fiber. The optical fiber wiredrawing annealing heat preservation device comprises an outer pipe body and an inner pipe body, wherein the inner pipe body is arranged in the outer pipe body; the outer pipe body comprises an openable outer pipe body upper part and an openable outer pipe body lower part; a heating conductor is wound on the outer side surface of the inner pipe body, a heat preservation layer is arranged on the inner side surface of the outer pipe body, an insulation layer is arranged on the inner side surface of the heat preservation layer, and a high-temperature resistant sealing strip is arranged at the connecting part of the outer pipe body upper part and the outer pipe body lower part of the outer pipe body.

Description

technical field [0001] The invention relates to an optical fiber production equipment, in particular to an optical fiber drawing annealing heat preservation device. Background technique [0002] In the optical fiber manufacturing industry, the design of optical fiber production process is an important factor to ensure the quality of optical fiber. Generally speaking, the optical fiber production process mainly includes several processes such as high-temperature melting, annealing and heat preservation, natural cooling, forced cooling, optical fiber coating, PMD twisting, and pulling and winding. The annealing and heat preservation process is to better release the stress of the optical fiber at high temperature and improve the attenuation, warpage, strength and other properties of the optical fiber. At present, the annealing and heat preservation devices used by most manufacturers are closed ceramic induction heating annealing and heat preservation structures. The annealing ...

AI Technical Summary

Problems solved by technology

At present, the annealing and heat preservation devices used by most manufacturers are closed ceramic induction heating annealing and heat preservation structures. The annealing and heat preservation devices of this structure are easy to form accumulated oxidation powder in the ceramic tube after high temperature oxidation, which is likely to bring hidden dangers to the production of optical fibers. At the same time, this structure needs to be cooled in advance when cleaning, which takes a long time and affects production efficiency

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