光纤预制棒对接工艺开发

发布时间：2019-06-19 19:58

【摘要】：近年来,我国光通信网络规模正在不断地扩大,光通信网络市场也变得越来越大,对光纤光缆的需求日益剧增。光纤预制棒是光纤光缆生产过程中的最重要的原材料,但是预制棒制造对其生产技术及工艺要求很高,资金投入量大,自行制造预制棒的成本一直居高不下,因此预制棒制造技术基本上长期被国外公司所垄断,导致我国90%以上的光纤预制棒需要依靠进口,严重阻碍了我国光通信网络的发展。开发大尺寸预制棒,发展我国光纤预制棒制造工艺,使国内光纤预制棒制备新技术实现产业化,推动光通信领域的发展,已成为行业发展的重要课题。本论文在分析当前国内外光纤预制棒及其制备技术现状的基础上,提出了采用预制棒对接工艺制造大尺寸预制棒的技术方案,探究了制作大尺寸预制棒工艺新思路。重点研究了对接工艺对对接处错位、对接点气泡、预制棒表面的影响及改善方法,从中探索了采用此工艺制备大尺寸预制棒的有效途径,提升了光纤拉丝的效率,主要研究内容及成果如下:1、制定了详细的工艺流程及操作步骤,并在操作步骤中,详细列举了所需的工艺参数,为本次预制棒对接工艺开发做好了详细的参数记录。2、通过芯层定位技术、对接点头部改善方案以及对接外径控制技术对芯层错位问题进行改善;通过内部结构控制技术改善对接气泡问题;通过喷灯位置、氢氧比例、气体流量大小、火焰停留时间做多次试验进行调整验证,解决表面白雾问题;通过火焰控制技术,解决对接水峰问题。将预制棒对接工艺开发过程中所遇到的问题均一一解决。3、成功开发预制棒对接工艺,生产出大尺寸超低水峰的光纤预制棒,从之前每根棒只能拉制500km光纤,到目前每根棒可以拉制900km光纤,将生产效率提升了21.5%,释放人工劳动强度14%。
[Abstract]:In recent years, the scale of optical communication network in China is expanding, the market of optical communication network is becoming larger and larger, and the demand for optical fiber and optical cable is increasing day by day. Optical fiber prefabricated rod is the most important raw material in the production process of optical fiber and optical cable, but the prefabricated rod manufacturing requires high production technology and process, the amount of capital input is large, and the cost of manufacturing prefabricated rod has been high all the time. Therefore, the prefabricated rod manufacturing technology has been monopolized by foreign companies for a long time, resulting in more than 90% of the optical prefabricated rods in our country need to rely on imports, which seriously hinders the development of optical communication network in our country. The development of large size prefabricated rods and the development of optical fiber prefabricated rod manufacturing technology in China have become an important topic in the development of the industry. The industrialization of new optical fiber prefabricated rod preparation technology and the promotion of the development of optical communication field have become an important issue in the development of the industry. On the basis of analyzing the present situation of optical fiber preform rod and its preparation technology at home and abroad, this paper puts forward the technical scheme of manufacturing large size preform rod by using preform rod docking process, and probes into the new idea of making large size preform rod. The influence and improvement method of docking process on dislocation, bubble and surface of prefabricated rod are studied in detail. The effective way to prepare large size preform rod by this process is explored, and the efficiency of optical fiber wire drawing is improved. the main research contents and achievements are as follows: 1, the detailed technological process and operation steps are worked out, and the required process parameters are listed in detail in the operation step. The detailed parameter records are made for the development of the prefabricated rod docking process. 2, through the core layer positioning technology, the contact head improvement scheme and the docking outer diameter control technology are used to improve the core layer dislocation problem; The problem of docking bubble is improved by internal structure control technology, and the problem of surface white fog is solved by adjusting and verifying the position of sprinkler, the ratio of hydrogen to oxygen, the size of gas flow rate and flame residence time, and the problem of docking water peak is solved by flame control technology. The problems encountered in the development of prefabricated rod docking process are solved one by one. 3, the prefabricated rod docking process is successfully developed, and the optical fiber prefabricated rod with large size and ultra low water peak is produced. From the previous 500km fiber to the 900km optical fiber, the production efficiency is increased by 21.5% and the manual labor intensity is released by 14%.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.1

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