pneumatic telescopic mast|lighting mast|military mast

NEWS

Structure principle of lifting lightning receiver

Time:2021-05-14 View:

Flash: it uses lightning Rod (net, strip line) and the metal of the building itself to suffer direct lightning to avoid damage to the building itself.
Lightning arrester in lightning protection grounding system.
Lightning receiver is a metal object specially used to receive direct lightning strike (lightning flash). The metal rod of the lightning receiver, called ightning rod. The metal wire of the lightning receiver, called ground wire or overhead earth wire. The metal strip and a wire fence of the lightning receiver are called Lightning strip. All lightning receivers must be connected to the grounding device through grounding down lead.

Structure introduction
The lightning protection device consists of a lightning receiver, a down lead device and a grounding device.
The Lightning receiver is located at the top of the lightning protection device. Its function is to use its prominent part which is preserver higher to lead the Lightning to itself and undertake direct lightning discharge.
The Lightning receiver consists of one of the following forms or any combination: Independent ightning rod; Ightning Rod, Lightning strip or lightning conduction directly installed on the building; Permanent metal objects and metal roof on the roof; Reinforcement in concrete members. In addition to the use of reinforcement in concrete components, the Lightning receiver should be plated (immersed) zinc, and the welding place should be coated with antiseptic paint. In places with strong corrosiveness, the cross section should be appropriately increased or other anti-corrosion measures should be taken.

Lightning protection principle
The protection range of the lightning receiver is that the shadow area formed by the rolling of the ball with radius R, the Lightning receiver and the ground is the protection range of the lightning receiver. According to different lightning protection categories, 30 meters, 45 meters and 60 meters are selected respectively. In the protection range, there is not no lightning strike, but the Lightning Strike Energy is relatively small. The smaller the radius R of grounder, the smaller the lightning energy entering the protection range, that is to say, the better the lightning protection effect of the lightning receiver.
The higher the flash receiver, the better. A flash receiver over 60 meters is of little technical significance. Pay attention to the safety distance between the protective angle of the lightning receiver and the external part of the system and the anti-flash mechanism, and perform overlapping treatment if necessary.
Theoretically, any well-grounded metal object can be used as a lightning receiver. Therefore, with the development of economy, people have put forward requirements for the shape of the lightning receiver, hoping to coordinate with beautiful modern buildings, some flashers with different shapes and colorful colors have appeared, but their lightning protection principles have not changed.
Because the traditional lightning receiver does not eliminate lightning strike, but only leads Lightning current to itself, which will bring problems such as earth potential rise, Side Strike, lightning current electromagnetic interference, etc. Although other technical means can be adopted to solve it, but people always hope to have a solution once and for all. In recent years, some new products have emerged and new achievements have been made in further controlling lightning.