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Date：04-19-2022
I’m a firm believer that everyone knows about lightning rods. When we were in junior high school, the textbook introduced it in detail. In our daily life, we often see lightning rods at the top of multi-storey buildings and have the effect of maintaining buildings, but many people have little knowledge of lightning rods. Now let us accompany you to grasp who invented the lightning rod, lightning rod and the efficacy of lightning rod installation standards.
1. Who invented the lightning rod.
The invention of the lightning rod has a good effect on preventing buildings from being struck by lightning. Nowadays, there are more and more multi-storey buildings in life, and the use of lightning rods is also more common. As everyone knows, many friends do not know who invented the lightning rod. Who invented the lightning rod?
American scientist Franklin invented the contemporary lightning rod. Franklin felt that lightning was a charge-discharge condition.
To better prove this, on a stormy day in July 1752, at the risk of being struck by lightning, he placed a paper kite tied with a long wire into a cumulonimbus cloud and placed it on the end of the wire. A bunch of silver keys.
When the lightning struck, Franklin’s hand came close to the key, and a string of spark discharges erupted from the key. There is still discomfort in the hand. Fortunately, the lightning was relatively poor, and Franklin was not injured.
The invention of the lightning rod is a rational development and the development of all human civilizations. Its generation makes everyone no longer worry about lightning strikes on buildings. It is very effective in the field of maintaining the safety of buildings and people themselves.
Second, the effect of lightning rod.
To put it bluntly, we can understand that the lightning rod is a device that prevents lightning strikes in buildings. Many multi-storey buildings have lightning rods, but many friends do not know the basic principles of lightning rods and how to avoid lightning strikes in buildings.
Traditional lightning protection can be divided into anti-shock lightning, anti-magnetic induction lightning and comprehensive lightning protection. The lightning protection grounding equipment for shock and lightning protection is generally composed of three parts, namely the lightning strip, the wire and the grounding body; the lightning protection strip is divided into lightning rod, lightning protection wire and lightning protection net.
The basic principle of lightning protection with the lightning rod as the lightning strip is: the lightning rod is connected to the ground according to the transmission line, and has an equal phase difference with the road surface, making full use of the relative height to increase the magnetic field strength to the specified value. correctly guide the charge and discharge.
The lightning rod causes electrostatic induction under the action of the strong electrostatic field, leading to upward charging and discharging; the two move forward to generate a lightning safety channel, and then pour into the ground to achieve the actual effect of lightning protection.
In essence, the lightning rod is a kind of lightning rod, which can cause the surrounding lightning, charge and discharge in advance, and transmit the lightning current to the road surface according to the electric conductor of its own grounding device, so as to avoid the maintenance target from being struck by lightning immediately.
3. Lightning rod installation standards.
Lightning rods are used to prevent lightning strikes in buildings, so the installation and use of lightning rods should be very standardized. Only the installation and use of the lightning rod can fully exert the lightning protection effect, so the installation of the standard lightning rod is very important.
1. The concrete base should be poured into the assembly site in advance, with a size of 400mm × 400mm × 600mm (length X width X height), and pre-embedded anchor screws or plastic expansion screws.
2. Install the lightning rod. The lightning rod base is fixed on the pre-set prefabricated concrete base. The lightning rod tower base is reliably connected with the concrete base anchor screw (or plastic expansion screw).
3. The lightning rod wire connector must be reliably connected with the power grounding wire, the wire connector is light green, and the cross-section BVR25mm2 or more copper core wire.
