The lightning rod is made of 12-25mm diameter round steel, the function is to prevent the building from being struck by lightning, right?
The lightning rod adopts garden steel or steel pipe, the length of the needle is 1m or less, the diameter of the round steel is 12mm, the steel pipe is 20mm, and the pipe wall thickness is greater than 3mm. The length of the needle is 1~2m: the round steel is 16mm, the steel tube is 25mm, the pipe wall is larger than 4mm. Because of the structure and function of the lightning rod, we should pay special attention to maintaining the good conductivity of the lightning rod. Once a connection is broken or broken, the section above the fracture becomes an isolated conductive system. When the clouds have charge, this part of the upper induction separated out of the charge and the cloud electric difference, while the lower induction electric charge and in the same number, if the upper and cloud discharge power, discharge current only through building strong and give off a lot of heat, caused by lightning strikes. In this way, not only can not lightning, but also cause thunder disaster. In order to prevent accidents, it is better for tall buildings to erect some lightning rods. In addition, each lightning rod can only protect a certain building area. For larger buildings, several lightning rods should also be erected
The flash receiver is not suitable for steel pipe, and the supporting flash device is reliably welded by a steel tube. The diameter of the steel pipe is in accordance with the height, and the installation height of the lightning rod is calculated by the rolling ball method according to the lightning protection grade of the building.A lightning rod is one of the ways to protect buildings against lightning.
Lightning is a lightning arrester, the tip must be galvanized stainless steel processing, larger than 12mm in diameter is sufficient cross-sectional area.
