【作者】 许峰；

【导师】 李林森；

【作者基本信息】 上海交通大学 ， 电子与信息工程， 2007， 硕士

【摘要】 随着我国国民经济的持续发展和人民生活水平的不断提高,城市轨道交通建设正在全国大型城市兴起,TU型轨道电路调谐电容器就是在这一背景下应轨道交通通信信号系统客户的要求而开发并替代进口产品的。由于生产过程的环境污染,项目产品使用的主要原材料金属化聚碳酸酯薄膜已在全球范围停止生产,这更迫切要求我们找到原材料的替代方案,尽快开发出满足顾客要求的产品。本文在金属化有机薄膜电容器研发流程的基础上,广泛分析了各种电工用有机薄膜,进行了大量的实验,及时地提出了运用复合介质技术开发TU型轨道电路调谐电容器的新设计。实践和试验证明,运用正温度系数的金属化聚酯薄膜和负温度系数的金属化聚丙烯薄膜复合生产轨道电路调谐电容器是完全符合用户的技术标准要求的。运用复合介质开发生产电容器打破了人们用单一介质生产电容器的惯性思维,申请的实用新型专利已得到国家知识产权局的授权,发明专利正在受理当中。文章从电容器的功能、种类、主要性能参数等基本知识开始,介绍了与TU型轨道电路调谐电容器密切相关的金属化有机薄膜电容器的主要原材料、产品设计及主要工艺过程,阐明了用金属化聚苯硫醚单一介质替代聚碳酸酯研制TU型轨道电路调谐电容器中存在的技术不成熟性和质量缺陷。本文重点介绍了运用介质复合技术开发TU型轨道电路调谐电容器项目产品的可行性、方案、产品设计、工艺设计,最后通过顾客第二方试验与使用验证、国家认可第三方权威实验室的检验和实验验证,充分证明了项目产品的技术可行性和制造工艺的成熟性。目前,项目产品已批量提供北京大成通号轨道交通设备有限公司使用。为进一步提升项目产品的技术含量和产业化的需要,文章最后提出了后续的改进工作和产业化计划,通过增强产品使用过程的安全性、制定行业标准达到引领和控制市场的目的。更多还原

【Abstract】 With the persistent development of our country’s national economy and the improvement of people’s daily lives, the construction of urban track transportation system is rising in many large cities in China. As the construction continues, the invention of TU Track Circuit Tuning Capacitor is required by the clients of track transportation communication signal systems, and this kind of capacitors can be used as the substitute of imported ones. Due to the pollution during the producing procedure, metallized polycarbonate (MPC) film, the main material of the traditional capacitors was forced to stop producing all over the world. So a substitute is badly needed, and a new material satisfies the requirement of client is urged.Based on the research procedure of metallized film capacitors, analysis of kinds of films used in electric applications, and numerous experiments, a new technology using compound dielectric to produce TU Track Circuit Tuning Capacitor is developed. Practice and experiments have proved that the products of track circuit tuning capacitors compoundly using the metallized polyester (MPET) film with positive temperature coefficient and metallized polypropylene (MPP) film with negative temperature coefficient can fully satisfy the technical requirements of users. The compound dielectric method of capacitor producing has broken through the traditional method using a single king of dielectric, and the utility model patent has been authorized by the State Intellectual Property Office of P. R. China. The application of invention patent is still in processing.Beginning with the introduction of basic knowledge of the function, category, and parameters of performance of capacitors, the main material, product design and fundamental techniques of metallized organic film capacitor, which is closely related to the TU Track Circuit Tuning Capacitor, are presented. The juvenility in technology and quality limitation of TU Track Circuit Tuning Capacitor using only the metallized (polyphenylene sulfide) as the substitute of polycarbonate is also presented. This paper focuses mainly on the feasibility, scheme, product design and techniques of TU Track Circuit Tuning Capacitor. And the feasibility in technology and maturity in production techniques have been fully proved by the tryout of clients as a second party, the practice experiment, the experiment and examination of authoritative lads. of the State as a third party. Now, large scale of products of this project have provided for Beijing Dacheng Tonghao Railway Transportation Device Corporation, Ltd. for use.For the purpose of promoting the technical contents of the product and meeting the need of industrialization, the improvement and improvement plans are placed at the end of this paper. Through the enhancement of security of the product and establishment of trade standard, the goal of leading and controlling the market can be achieved.更多还原