Span central lightning protection backflushing lightning triggering ball

The invention discloses a span center lightning protection backflushing lightning triggering ball, which is mainly composed of a lightning triggering ball body (1) installed on a lightning conductor and a plurality of backflushing devices (4) installed in the lightning triggering ball body in an embedded mode, wherein one end, facing the interior of the lightning triggering ball body, of the backflushing device (4) is electrically connected with the lightning conductor through a lead wire (5), and the other end extends to the outer surface of the lightning triggering ball body (1) to form a backflushing nozzle (2). The lightning triggering ball is installed on a lightning conductor, is suitable for the lightning conductor of a large-span power transmission line, and can increase the lightning resistance level of the power transmission line. 本发明公开了一种档距中央防雷反冲引雷球，主要由安装在避雷线上的引雷球体（1）和若干个镶嵌安装在引雷球体内部的反冲装置（4）组成；所述的反冲装置（4）的朝向引雷球体内部的一端通过引线（5）与避雷线电气连接，另一端延伸至引雷球体（1）的外表面形成反冲喷口（2）。该引雷球安装在避雷线上，适用于大档距输电线路的避雷线上，能够增加输电线路的耐雷水平。