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    彩钢板屋面如何防雷
    发布来源:http://www.jnjgcg.com/  2016-11-21 17:24:25 发布人:济南坚固彩钢
    彩钢板屋面防雷对于金属屋面的安全至关重要。下面新宇小编为您介绍防雷系统设计的六大要素:
    The color steel plate roofing is very important for the safety of metal roof. The following Xinyu Xiaobian introduce you six elements of lightning protection system design:
    1、建筑物外部、内部防雷装置的接闪功能;
    1, external and internal lightning protection device of the building;
    2、引下线的分流效果;
    2, lead off the shunt effect;
    3、建筑物内各部位的均衡电位;
    3, the equilibrium potential of each part of the building;
    4、内部各种设备的屏蔽保护作用;
    4, the protective effect of various devices inside the shield;
    5、接地效果;
    5, grounding effect;
    6、内部各种线路的合理分布。
    6, the rational distribution of various lines.
    综合来说就是外部防雷系统与内部防雷系统两大部分。
    In general, is the external lightning protection system and the two most of the internal lightning protection system.
    一、屋面的防雷则是外部防雷系统的一部分,即接闪器——避雷针、避雷带或避雷网,由于金属屋面容易引起雷击,所以在设计金属屋面建筑物时,应根据防雷设计的六大要素考虑如何在屋面上的防雷。传统建筑物的避雷方式是采用富兰克林常规避雷导体或避雷针结合避雷网,但是金属屋面的金属板较薄,无法安装高大沉重的传统避雷针。
    Lightning, a roof is part of external lightning protection system, the lightning arrester, lightning, lightning or lightning network, because the metal roof is easy to cause lightning, so in the design of metal roof buildings, should be based on the six elements of the lightning protection design for lightning protection on the roof of the consideration of how to. The lightning protection mode of the traditional building is the use of Franklin conventional lightning conductor or lightning rod combined with the lightning protection network, but the metal roof of the metal plate is thin, can not install the tall heavy traditional lightning rod.
    二、从闪电理论与观察表明,云地闪电与人类关系更密切,它是雷雨云中荷电中心对大地的脉冲放电过程,该过程除存在光导、回击主要脉冲放电过程外,还存在一系列其他脉冲放电过程,回击的特点是峰值电流高,放电时间短,回击的电流脉冲平均峰值为几十到几百千安,持续时间约为几十到上百微秒,形成了闪电电流的剧烈变化。
    Two, that from the lightning theory and observation, the relationship between cloud to ground lightning and human most closely, it is the center of the earth charged thundercloud pulse discharge process, the process of removing existing optical return main pulse discharge process, there are still a series of other pulse discharge process, response is characterized by high peak current, discharge time in short, the average peak current pulse back tens to hundreds of kiloamperes, duration time is about tens to hundreds of microseconds, dramatic changes in the form of lightning current.
    综上所述,现在的建筑物在防雷方面,主要是根据闪电理论及防雷的六大因素进行设计,其中有采用安装多棵避雷针形式或避雷网形式,也有采用避雷带形式,不论采用什么形式的防雷系统,首先必须考虑防雷效果,对建筑物内部设备的保护,同时还应考虑施工实现的问题。所以金属屋面的防雷系统是一个很难处理的工程,必须选好屋面的避雷形式,还要做好引下线工作,这样才能保证建筑物的安全,使人身、设备有可靠的安全保证。
    In summary, the current building in the mine, is designed according to the six factors of lightning and lightning protection theory, which uses the installed lightning rod lightning network tree form or form, but also the use of lightning belt form, no matter what form the lightning protection system, we must first consider the effect of lightning protection, protection of equipment within the building at the same time, should also consider the problem of construction. So the lightning protection system of metal roof is a difficult project, must choose the form of lightning roof, but also do lead work, so as to ensure the safety of the building, so that people and equipment are a reliable security guarantee.