CN202474540U - Ball cactus-shaped lightning rod - Google Patents

Abstract

The utility model discloses a fairy spherical lightning rod, which comprises a spherical lightning rod body, a plurality of thorn-shaped grounding needles are arranged outside the spherical lightning rod, a lightning rod tube passes through the spherical lightning rod body, and the lower end of the lightning rod tube is fixed on the top surface of a building. The lower end of the lightning rod tube is connected to the ground electrode through the down conductor. Based on the principle of tip discharge, the utility model designs the lightning rod into a cactus sphere, adopts multi-pole radiation to diffuse the lightning current, and not only has the main pin of the lightning rod to connect to the lightning, but also adds a grounding pin to the cactus sphere, and has the function of multi-point lightning. It also has a certain defensive effect against side mine strikes.

Description

cactus lightning rod

technical field

The utility model relates to a lightning protection grounding lightning rod, in particular to a cactus spherical lightning rod.

Background technique

The existing traditional lightning rods used in various facilities, equipment and electrical devices are basically Franklin lightning rods. The disadvantage is that the discharge effect on lightning current is not good, and the lightning protection effect is not ideal. The lightning rod was invented by Franklin in 1753. It is a metal needle that is simply installed on a high-rise building, called a lightning receptor. Together with the down-conductor and the grounding electrode, it becomes a complete set of protection against direct lightning strikes. device.

The lightning rod is connected to the ground through a wire, forming an equipotential difference with the ground. Using its own height, the electric field of the lightning cloud whose electric field intensity increases to the limit value is distorted, and begins to ionize and lead to discharge downward; the lightning rod produces a tip discharge under the action of a strong electric field. Form an upward leading discharge; the two meet to form a lightning path, and then pour into the earth to achieve the effect of lightning protection. Therefore, the lightning protection principle of the lightning rod is that it can receive the lightning current and smoothly guide it into the earth, thereby protecting the buildings under it or around it from lightning strikes.

Due to the simple structure of the traditional lightning rod, there is only one single needle, the efficiency of the lightning connection is not high, and the discharge effect on the lightning current is relatively insufficient. With the progress of the times, some lightning rods such as double-needle, multi-needle, and spherical lightning rods appeared later, which made up for the shortcomings of traditional lightning rods to a certain extent.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the traditional lightning rod technology and combine the advantages of the prior art to provide a cactus-shaped lightning rod, which has the function of multi-point lightning connection and has a certain defense effect against side lightning.

The technical scheme that the utility model adopts is:

The fairy spherical lightning rod includes a spherical lightning rod body, a plurality of ball-shaped grounding needles are arranged outside the spherical lightning rod, a lightning rod tube passes through the spherical lightning rod body, the lower end of the lightning rod tube is fixed on the top surface of the building, and the lower end of the lightning rod tube passes through The down lead is connected to the ground electrode.

The spherical lightning rod body is composed of two semi-celestial spheres.

The utility model has the advantages of:

Based on the principle of tip discharge, the utility model designs the lightning rod into a cactus sphere, adopts multi-pole radiation to diffuse the lightning current, and not only has the main pin of the lightning rod to connect to the lightning, but also adds a grounding pin to the cactus sphere, and has the function of multi-point lightning. It also has a certain defensive effect against side mine strikes.

The utility model is made of stainless steel, which is a non-inductive, low-impedance metal inner conductor lightning receiver, which transmits the lightning current after the lightning to the earth through the grounding system, and prevents side strikes from occurring to the protected buildings. The charged coverage area is large, the protection range is wide, and the lightning discharge ability is strong, which can significantly reduce the lightning induction generated when the lightning current passes through the lightning rod and the down conductor; reduce the potential difference formed when the lightning current is discharged through the grounding system. Counterattack phenomenon; weaken the induced overvoltage phenomenon caused by the large current in the down conductor, and the lightning protection effect is ideal, especially suitable for areas with high incidence of lightning.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a top sectional view of FIG. 1 .

FIG. 3 is a schematic diagram of the structure of the ground pin.

Detailed ways

As shown in the accompanying drawings: the cactus spherical lightning rod includes a spherical lightning rod body 1, a plurality of ball-shaped grounding needles 2 are arranged outside the spherical lightning rod body 1, and a lightning rod tube 3 passes through the spherical lightning rod body 1, and the lightning rod tube 3 The lower end is fixed on the top surface of the building, and the lower end of the lightning rod tube 3 is connected with the grounding pole 5 through the down conductor 4, and the spherical lightning rod body 1 is composed of two semi-celestial spheres.

The cactus spherical lightning rod body 1 is first made of two half cactus spheres by metal casting, and then welded into a complete hollow cactus sphere. The lightning rod tube passes through the cactus spherical lightning rod body 1 and is fixed at an appropriate height. The ball valve on the cactus spherical lightning rod body 1 is tapped with screw holes at equal angles. Each group of grounding needles 2 is made up of a thicker main needle and three thinner auxiliary needles, and is made of stainless steel round steel. One end of the main needle is turned into a needle shape with a lathe, and the other end is turned into a thread, and three threaded holes are evenly tapped around the 1/4 distance from the thread end, inclined to the direction of the main needle, and the other three attachment needles are cylindrical at one end. The other end is also machined into a bolt. When installing on site, first screw the threaded end of the main needle into the bolt hole of the prickly pear valve to fix it, then screw the threaded ends of the three attached needles into the three threaded holes of the main needle, and spread them at 120° at the tip of the main needle. The surrounding area is in a unidirectional radial shape, and is shorter than the main needle in the length direction. After the installation is completed, the grounding pins 2 are required to be evenly distributed radially outward on the lightning rod body 1 .

Claims (2)

1. The fairy spherical lightning rod, including a spherical lightning rod body, is characterized in that: the spherical lightning rod has a plurality of ball-shaped grounding needles arranged outside the spherical lightning rod, and the lightning rod tube passes through the spherical lightning rod body, and the lower end of the lightning rod tube is fixed on the top surface of the building. , the lower end of the lightning rod tube is connected to the ground electrode through the down conductor. 2. The cactus-shaped lightning rod according to claim 1, characterized in that: said spherical lightning rod body is composed of two half cactus spheres.

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