Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing outer sleeve for optical fiber by continuous melting method

A technology of outer sleeve and optical fiber, applied in optics, light guides, optical components, etc., can solve the problems of high price and long production cycle, and achieve the effect of reducing production cost, continuous and efficient production, and high efficiency

Active Publication Date: 2020-01-03
JIANGSU PACIFIC QUARTZ
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to invent a method for producing an optical fiber outer sleeve by a high-efficiency continuous melting method capable of continuous production in view of the problems of long production cycle and high price in the existing production method of quartz glass outer sleeve for optical fiber

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with embodiment.

[0023] A method for producing quartz glass casing tubes for optical fiber technology by continuous melting, which is characterized in that high-purity natural quartz sand (SiO 2 Content ≥ 99.99%) is put into continuous melting furnace after pretreatment, melted by electric heating, and the melted quartz glass is drawn into thick-walled quartz glass tube by forming device, discharge table and tube drawing machine. Specific steps are as follows:

[0024] 1. Raw material pretreatment

[0025] The difference from the traditional process is that the quartz sand raw material (SiO 2 content ≥ 99.99%) for pretreatment, first vacuumize the quartz sand in a closed container, and wait until the vacuum degree reaches ≤ 10 -1 After Pa, backfill the container with a mixture of helium and hydrogen with a volume ratio of 9:1 to return to the working pressure, and then feed according to the conven...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method of producing an outer sleeve for optical fibers by a continuous melting method. The method is characterized by comprising the following steps: step I, raw material pretreatment; step II, material charging; step III, melting; step IV, formation; and step V, drawing. During raw material pretreatment, the key points are as follows: a quartz sand raw material is placed in a sealed vessel to be vacuumized, after the vacuum degree is smaller than or equal to 10<-1>Pa, mixed gas of helium and hydrogen with the volume ratio being 9 to 1 is backfilled in the vessel to enable the pressure of the vessel to return to working pressure, and then carrying out material charging and heating formation according to a conventional procedure. The method is simple in technology and high in efficiency and can greatly lower the production cost.

Description

technical field [0001] The invention relates to a production technology of an optical fiber outer sleeve, in particular to a production technology of a quartz thick-walled optical fiber outer sleeve, specifically a method for producing an optical fiber outer sleeve by continuous melting. Background technique [0002] At present, the production methods of quartz glass outer tubes for optical fibers mainly include SiCl4 hydrolysis synthesis method and natural quartz plasma melting method. However, these two methods have problems such as long production cycle and high price, which restrict the development of the optical fiber industry, and it is necessary to improve them. Contents of the invention [0003] The object of the present invention is to invent a method for producing an optical fiber outer sleeve by a high-efficiency continuous melting method capable of continuous production in view of the problems of long production cycle and high price in the existing production m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03B20/00G02B6/44
CPCC03B15/14G02B6/4486
Inventor 陈士斌周明强何茂乾钱卫刚陈士亮
Owner JIANGSU PACIFIC QUARTZ