CN202977754U - Combined ground connector for lightning rods - Google Patents

Abstract

The utility model relates to a combined grounding body for a lightning rod, which is composed of a sphere, a group of grounding rods and a lightning rod terminal. A circular plane is cut on the sphere, and the lightning rod terminal is arranged on the circular plane. The vertical centers of the circular planes are evenly distributed on the outer surface of the sphere. The quantity of a group of ground rods is 1-7. The grounding rod is a combined rod body of an external thread section, a cylindrical section and a vertebral body section. A limit retaining ring and a sealing ring are provided at the connection between the external thread section and the cylindrical section. Threaded hole. The lightning rod terminal is a bolt threaded with the sphere. The utility model has the advantage that it can meet the resistivity of various soil geology by adjusting the number of grounding rods installed, which not only ensures the lightning protection grounding point requirements of the equipment, but also reduces the operating cost of the equipment.

Description

Combined grounding body for lightning rod

technical field

The utility model belongs to the technical field of electric equipment lightning protection grounding conduction, in particular to a combined grounding body of a lightning rod.

Background technique

At present, the lightning protection grounding resistance of electrical equipment in my country generally requires ≤10Ω, but in practical applications, the soil resistivity of the equipment lightning protection grounding point is often large, such as sandy land, which cannot meet the above requirements. The traditional grounding body uses a grounding conductor. When the grounding resistance exceeds 10Ω, it is often necessary to search for the grounding point many times to meet the lightning protection grounding requirements of electrical equipment, otherwise it will bury the hidden danger of lightning accidents.

Contents of the invention

The purpose of this utility model is to provide a combined grounding body for a lightning rod, so that the grounding point of the equipment can be applied to the geological environment with a resistivity ≤ 10Ω, and can also be applied to occasions with a larger resistivity.

The purpose of this utility model is achieved through the following technical solutions:

The combined grounding body of the lightning rod of the utility model is characterized in that it is composed of a sphere, a group of grounding rods connected with the sphere and a lightning rod terminal. A circular plane is cut on the sphere, and the lightning rod is connected The columns are arranged on the circular plane, and the group of grounding rods is evenly distributed on the outer surface of the sphere relative to the vertical center of the circular plane.

The number of a group of ground rods is 1-7.

The grounding rod is a combined rod body of an external thread section, a cylindrical section and a vertebral body section. A limit retaining ring and a sealing ring are provided at the connection between the external thread section and the cylindrical section. The sphere is provided with a A set of internally threaded holes corresponding to said externally threaded segments.

The lightning rod terminal is a bolt threaded with the sphere.

Advantage of the utility model:

The utility model can meet the resistivity of various soil geology by adjusting the installation quantity of the grounding rods, and fully meet the grounding requirements of various equipments. When the soil resistivity of the lightning protection grounding point of the equipment is high, the number of grounding rods can be increased, and the shunt effect is greatly enhanced. When the soil resistivity of the lightning protection grounding point of the equipment is low, the number of grounding rods can be reduced and the operating cost of the equipment can be reduced.

Description of drawings

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

Fig. 2 is the bottom view of Fig. 1 of the present utility model.

Detailed ways

The specific embodiment of the utility model is described below in conjunction with accompanying drawing.

As shown in Figures 1 and 2, the combined grounding body of the lightning rod of the present invention is characterized in that it consists of a sphere 4, a group of grounding rods connected to the sphere 4 and a lightning rod terminal 1. The sphere Cut a circular plane 3 on 4, the lightning rod terminal 1 is set on the circular plane 3, and the set of grounding rods is evenly distributed on the outer surface of the sphere relative to the vertical center 2 of the circular plane , A set of grounding rods after assembly is in a static state in a launching shape, which acts as a shunt, thus meeting the lightning protection grounding requirements.

The quantity of said one group of grounding rods is 1-7, and the quantity of its grounding rods depends on the requirements of geological environment and grounding equipment in the specific implementation process,

The grounding rod is a combined rod body of an external thread section 5, a cylindrical section 7 and a vertebral body section 8, and a stop ring 6 and a sealing ring are provided at the connection between the external thread section 5 and the cylindrical section 7, so that A group of internally threaded holes corresponding to the externally threaded section is provided on the above-mentioned sphere. the

The lightning rod terminal 1 is a bolt threaded with a sphere. One end of the wire of the lightning rod can be wound on the outer surface of the bolt, and then connected and fixed with the sphere, and the other end of the wire can be connected with the terminal of the lightning rod.

Claims (4)

1. the combined grounding body of a lightning rod, it is characterized in that by a spheroid, the one group of earth rod and the lightning rod binding post that are connected of spheroid forms therewith, disk of cutting on described spheroid, described lightning rod binding post is located on this disk, and the vertical center of circle of described one group of relatively described disk of earth rod is evenly distributed on the outer surface of described spheroid.

2. the combined grounding body of lightning rod according to claim 1, the quantity that it is characterized in that described one group of earth rod are 1-7.

3. the combined grounding body of lightning rod according to claim 1, it is characterized in that described earth rod is the combination barred body of external thread section, cylindrical section and centrum section, be provided with spacing back-up ring and sealing ring in the junction of described external thread section and cylindrical section, described spheroid is provided with the one group internal thread hole corresponding with described external thread section.

4. the combined grounding body of lightning rod according to claim 1, is characterized in that the bolt of described lightning rod binding post for being threaded with spheroid.

Images