有机硅材料灌封接线盒安全性能测试分析研究

发布时间：2018-04-25 13:00

  本文选题：有机硅材料 + 灌封　； 参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：随着现代社会的发展,电气设备在人们的生活中扮演着越来越重要的角色,尤其是现代化建筑的建设,对电气设备和电气线路提出了更高的要求,电气设备使用和电气线路运行基数的增大加大了电气火灾的风险。电气接线盒中导线多而复杂,是电气线路重要的隐患部位,在电气线路施工和安装中常把接线盒安装到隐蔽工程或狭窄空间中,不易被人察觉,一旦发生短路、过载、导线接触不良等隐患,后果十分严重,甚至对人员生命造成威胁。本文提出有机硅材料灌封接线盒技术,在电气线路接线盒内的导线外充满灌封材料,利用有机硅材料的物理、化学特性保护电气线路,提高电气线路整体的安全性。首先研究了灌封接线盒相关技术,包括灌封的定义和作用、灌封材料的选择、灌封工艺等,确定了以有机硅材料作为灌封材料,根据电气线路的灌封要求制备了有机硅材料并进行灌封实验,制作了模拟电气线路接线盒的装置。之后研究了电气线路导线的发热、导热原理,得出电气线路温度变化与线路负载的联系。随后研究了红外成像相关技术和测温原理,利用红外成像仪研究有机硅材料灌封接线盒导热性,对模拟装置进行灌封前、灌封后接线盒不同工作条件下温度的测试,并进行数据和图像分析。电气线路上的负载越大,接线盒内导线接头的温度越高,灌封后下降的温差也越大,灌封效果越好;灌封前接线盒内热量集中于导线接头处,灌封后接线盒内热量均匀向外散播,接线盒内温度整体降低。最后对有机硅材料进行了环境试验和电化学分析,模拟电气线路的使用环境,评估有机硅材料灌封接线盒的可靠性。通过试验前后的全目视检查、电子显微分析和局部交流阻抗测试分析,得出有机硅材料的在紫外照射、盐雾、湿热试验中具有良好的防护效果,综合分析评价有机硅材料灌封接线盒的安全性,对预防电气线路火灾具有重要意义。
[Abstract]:With the development of modern society, electrical equipment plays a more and more important role in people's life, especially in the construction of modern buildings. The use of electrical equipment and the increase of the operating base of electrical lines increase the risk of electrical fires. There are many and complex conductors in the electric junction box, which is an important hidden danger part of the electrical line. In the construction and installation of the electrical line, the junction box is often installed in the hidden project or the narrow space, it is not easy to be noticed, once the short circuit occurs, the overload occurs. Wire contact and other hidden dangers, the consequences are very serious, and even threaten the lives of personnel. In this paper, the technology of silicone sealing junction box is put forward, in which the wire inside the junction box of the electrical circuit is filled with the sealing material. The physical and chemical characteristics of the organic silicon material are used to protect the electrical circuit and improve the overall safety of the electrical circuit. In this paper, the relative technology of the sealing junction box is studied, including the definition and function of the filling box, the selection of the filling material, the filling process and so on. The silicone material is used as the filling material. According to the requirements of electrical circuit sealing, the silicone material was prepared and the experiment was carried out, and the device of simulating electrical circuit junction box was made. Then, the heating and heat conduction principle of electric wire is studied, and the relation between the temperature change of electric line and the load of line is obtained. Then the infrared imaging technology and the principle of temperature measurement are studied. The thermal conductivity of silicone sealing junction box is studied by using infrared imager. The temperature of the junction box before and after sealing is measured before and after filling. And data and image analysis. The larger the load on the electric circuit, the higher the temperature of the wire connector in the junction box, the greater the temperature difference of the drop after the pouring, the better the sealing effect is, and the heat in the junction box is concentrated at the junction of the wire before the sealing. After filling, the heat in the junction box is distributed evenly, and the temperature in the junction box decreases as a whole. Finally, the environmental test and electrochemical analysis of silicone materials were carried out to simulate the operating environment of electrical circuits and to evaluate the reliability of silicone filling junction boxes. Through the full visual examination, electron microscope analysis and local AC impedance analysis before and after the test, it is concluded that the silicone material has good protective effect in the experiments of purple external irradiation, salt spray and damp heat test. Comprehensive analysis and evaluation of the safety of silicone filling junction box is of great significance to prevent electrical line fire.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM503.5
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本文编号：1801420