Tko je izumio gromobran. Funkcija gromobrana. Zahtjevi specifikacije za ugradnju gromobrana

Čvrsto vjerujem da svi znaju za to munja rods. When we were in junior high school, the textbook covered it in detail. In our daily life, we often see munja rods at the top of multi-storey buildings and have the effect of maintaining buildings, but many people have little knowledge of munja rods. Now let us know with you who invented munja rods, munja rods and the efficacy of munja rod installation standards. 1. Who invented the munja rod. The invention of the munja rod has a good effect on preventing buildings from being struck by munja. Nowadays, there are more and more multi-storey buildings in life, and the use of munja rods is also more common. As everyone knows, many friends do not know who invented the munja rod. Who invented the munja rod? American scientist Franklin invented the contemporary munja rod. Franklin felt that munja was a charge-discharge condition. To better prove this, on a stormy day in July 1752, at the risk of being struck by munja, 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 munja struck, Franklin's hand came close to the key, and a string of spark discharges erupted from the key. There is a real discomfort in the hand. Fortunately, the munja was relatively poor, and Franklin was not injured. The invention of the munja rod is a rational development and the development of all human civilizations. Its generation makes everyone no longer worry about munja strikes on buildings. It is very effective in maintaining the safety of buildings and people themselves. Second, the effect of munja rod. To put it bluntly, we can understand that the munja rod is a device that prevents munja strikes in buildings. Many multi-storey buildings have munja rods, but many friends do not know the basic principles of munja rods and how to avoid munja strikes in buildings. Traditional munja protection can be divided into anti-shock munja, anti-magnetic induction munja and comprehensive munja protection. The munja protection grounding equipment for shock and munja protection is generally composed of three parts, namely the munja strip, the wire and the grounding body; the munja protection strip is divided into munja rod, munja protection wire and munja protection net. The basic principle of munja protection with the munja rod as the munja strip is: the munja rod is connected to the ground according to the transmission line, and has an equal phase difference with the floor, making full use of the relative height to increase the magnetic field strength to the specified value. correctly guide the charge and discharge. The munja rod causes electrostatic induction under the action of a strong electrostatic field, leading to upward charging and discharging; the two move forward to generate a munja safety channel, and then pour into the ground to achieve the actual effect of munja protection. In essence, the munja rod is a kind of munja rod, which can cause the surrounding munja, charge and discharge in advance, and transmit the munja current to the road surface according to its own grounding device electrical conductor, so as to avoid the maintenance target from being struck by munja immediately. 3. Lightning rod installation standards. Lightning rods are used to prevent munja strikes in buildings, so the installation and use of munja rods should be very standardized. Only the installation and use of the munja rod can fully exert the munja protection effect, so the installation of the standard munja rod is very important. 1. The concrete base should be poured concrete at the installation 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 munja rod. The munja rod base is fixed on the pre-set prefabricated concrete base. The munja rod tower base is reliably connected with the concrete base anchor screw (or plastic expansion screw). 3. The munja 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.

Vrijeme objave: Mar-29-2022