Composite grounding grid capable of preventing lightning stroke and electromagnetic interference

Abstract

A composite grounding grid capable of preventing lightning stroke and electromagnetic interference comprises a first composite grounding grid body, a lightning rod, lightning protection shielding cables, a second composite grounding grid body and a non-magnetic steel pipe, an insulating base is arranged at the lower end of the lightning rod, the upper ends of the multiple lightning protection shielding cables penetrate through the insulating base to be connected with the lightning rod, and the lower ends of the lightning protection shielding cables are located under the ground and sleeved with the non-magnetic steel pipe. The upper end of the non-magnetic steel pipe is connected with the first composite grounding grid. The lower end of the lightning protection shielding cable passes through the non-magnetic steel pipe and then is connected with the second composite grounding grid. The advantages are that lightning protection and electromagnetic interference resistance are further improved, the grounding area is effectively enlarged, the structure is simple and easy to install and pre-embed, and the first composite grounding grid and the second composite grounding grid are stable in structure and long in service life.

Description

TECHNICAL FIELD

[0001] The present application relates to a lightning and electromagnetic interference composite grounding net. BACKGROUND

[0002] The grounding net is a general term for a grounding body composed of a plurality of metal grounding electrodes buried in the ground at a certain depth and a conductor connecting the grounding electrodes to form a net structure. It is widely used in power, construction, computer, industrial and mining enterprises, communication and many other industries, playing a role in safety protection, shielding, etc. How to further improve lightning and electromagnetic interference is a problem encountered at present, and how to expand the grounding area of the existing grounding net is also a problem to be solved. SUMMARY

[0003] The purpose of the present application is to solve the technical problems of the existing lightning and electromagnetic interference composite grounding net.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a lightning and electromagnetic interference composite grounding net, comprising a first composite grounding net, a lightning rod, a lightning protection shielding cable, a second composite grounding net and a non-magnetic steel pipe, the lower end of the lightning rod is provided with an insulating seat, the upper end of the lightning protection shielding cable is connected with the lightning rod through the insulating seat, the lower end of the lightning protection shielding cable is externally sleeved with the non-magnetic steel pipe below the ground, the upper end of the non-magnetic steel pipe is connected with the first composite grounding net, and the lower end of the lightning protection shielding cable is connected with the second composite grounding net after passing through the non-magnetic steel pipe.

[0005] Further, the non-magnetic steel pipe is externally provided with an electromagnetic shielding layer and internally filled with silica gel.

[0006] Further, the first composite grounding net and the second composite grounding net each comprise a frame body surrounded in a square shape and a graphite grounding wire arranged in a staggered manner inside the frame body to form a grid net structure.

[0007] Further, the frame body is surrounded by a coarse graphite grounding wire.

[0008] Further, it further comprises a grounding electrode assembly, the grounding electrode assembly comprises at least one grounding electrode, and the grounding electrode is fixedly connected with the frame body and the grid net structure.

[0009] Further, the graphite grounding wire is externally provided with a fixing member, the fixing member comprises an upper shell and a lower shell, the outer edges of the upper shell and the lower shell are mutually buckled to form a fixing cavity with four threading holes.

[0010] Further, one side of the upper shell is a first connecting part, the other side is a circular arc protrusion, the outer edge of the first connecting part is provided with a clamping protrusion, and four first semicircles are arranged on the first connecting part; one side of the lower shell is a second connecting part, the other side is a circular arc protrusion, the outer edge of the second connecting part is provided with a clamping groove, and four second semicircles are arranged on the second connecting part, the clamping protrusion is clamped into the clamping groove to be fixed, and the four first semicircles and the corresponding four second semicircles form four wire holes.

[0011] Further, the four wire holes are uniformly distributed.

[0012] Further, the wire hole on one side of the four wire holes and the adjacent wire hole form an acute angle, and the wire hole on the other side and the adjacent wire hole form an obtuse angle.

[0013] Further, the fixing cavity is a cross shape connecting the four wire holes.

[0014] The beneficial effects of the present application are: further improving the lightning protection and electromagnetic interference resistance, effectively expanding the grounding area, simple structure, easy to install and pre-bury, the first composite grounding net and the second composite grounding net have stable structure and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present application.

[0016] Figure 2 It is a structural schematic diagram of the first composite grounding net and the second composite grounding net.

[0017] Figure 3 It is a structural schematic diagram of the fixing part.

[0018] Figure 4 It is a structural schematic diagram of the upper shell.

[0019] Figure 5 It is a matching sectional view of the clamping protrusion and the clamping groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Figures 1-5 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Figures 1-5The lightning protection and electromagnetic interference composite grounding net comprises a first composite grounding net 1, a lightning rod 2, lightning protection and shielding cables 3, a second composite grounding net 4 and a non-magnetic steel pipe 5, the lower end of the lightning rod is provided with an insulating seat 6, the upper ends of the lightning protection and shielding cables pass through the insulating seat and are connected with the lightning rod, the lower ends of the lightning protection and shielding cables are externally sleeved with the non-magnetic steel pipe under the ground, the upper end of the non-magnetic steel pipe is connected with the first composite grounding net, and the lower ends of the lightning protection and shielding cables are connected with the second composite grounding net after passing through the non-magnetic steel pipe.

[0022] A pipe with an electromagnetic shielding layer is sleeved on the outer end of the lightning protection and shielding cable between the insulating seat and the first composite grounding net 1.

[0023] The outer surface of the non-magnetic steel pipe of the lightning protection and electromagnetic interference composite grounding net is provided with an electromagnetic shielding layer, and the inside is filled with silica gel.

[0024] The conductive tip 7 on the lightning rod of the lightning protection and electromagnetic interference composite grounding net is connected with the lower end of the lightning protection and shielding cable.

[0025] The lightning protection and electromagnetic interference composite grounding net is connected in sequence with the first composite grounding net and the second composite grounding net through the first lightning protection and shielding cable.

[0026] The first composite grounding net 1 and the second composite grounding net 4 of the lightning protection and electromagnetic interference composite grounding net each comprise a frame body in the shape of a square and graphite grounding wires 9 arranged in a staggered manner in the frame body 8 to form a grid net structure.

[0027] The first composite grounding net 1 and the second composite grounding net 4 of the lightning protection and electromagnetic interference composite grounding net each comprise a frame body in the shape of a circle.

[0028] The frame body of the lightning protection and electromagnetic interference composite grounding net is surrounded by the coarse graphite grounding wires.

[0029] The lightning protection and electromagnetic interference composite grounding net further comprises a grounding electrode assembly 10, the grounding electrode assembly comprises at least one grounding electrode, and the grounding electrode is fixedly connected with the frame body and the grid net structure.

[0030] The lightning protection and electromagnetic interference composite grounding net is provided with a fixing member 11 on the outer side of the graphite grounding wires arranged in a staggered manner, the fixing member comprises an upper shell 12 and a lower shell 13, the outer edges of the upper shell and the lower shell are buckled to each other to form a fixing cavity 14 with four wire holes 15.

[0031] The lightning protection and electromagnetic interference composite grounding net is characterized in that the upper shell has a first connecting part on one side and a circular-arc protrusion on the other side, the outer edge of the first connecting part is provided with a clamping protrusion 16, and four first semicircles 17 are arranged on the first connecting part; the lower shell has a second connecting part on one side and a circular-arc protrusion on the other side, the outer edge of the second connecting part is provided with a clamping groove 18, and four second semicircles are arranged on the second connecting part, the clamping protrusion is clamped into the clamping groove for fixation, and the four first semicircles and the corresponding four second semicircles form four wire threading holes.

[0032] The lightning protection and electromagnetic interference composite grounding net is characterized in that the four wire threading holes are uniformly distributed.

[0033] The lightning protection and electromagnetic interference composite grounding net is characterized in that the wire threading hole on one side of the four wire threading holes and the adjacent wire threading hole form an acute angle, and the wire threading hole on the other side and the adjacent wire threading hole form an obtuse angle.

[0034] The lightning protection and electromagnetic interference composite grounding net is characterized in that the fixing cavity is in the shape of a cross connecting the four wire threading holes.

[0035] The lightning protection and electromagnetic interference composite grounding net is characterized in that the lightning protection and electromagnetic interference resistance is further improved, and the grounding area is effectively expanded.

[0036] The lightning protection and electromagnetic interference composite grounding net is characterized in that the structure is simple, easy to install and pre-bury.

[0037] The lightning protection and electromagnetic interference composite grounding net is characterized in that the first composite grounding net and the second composite grounding net have stable structures and long service lives.

[0038] The lightning protection and electromagnetic interference composite grounding net is characterized in that the lower edge of the frame body of the first composite grounding net and the second composite grounding net is provided with a downwardly extending grounding net.

[0039] The lightning protection and electromagnetic interference composite grounding net is characterized in that the periphery of the first composite grounding net and the second composite grounding net is provided with a resistance reducing agent.

[0040] The lightning protection and electromagnetic interference composite grounding net is characterized in that the outer side of the top corner of the quadrilateral of the first composite grounding net and the second composite grounding net is provided with a graphite grounding wire extending in the opposite direction along the diagonal line.

[0041] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A composite grounding grid for lightning strike and electromagnetic interference protection, comprising a first composite grounding grid, a lightning rod, a lightning protection shielded cable, a second composite grounding grid, and a non-magnetic steel pipe, characterized in that: The lower end of the lightning rod is provided with an insulating seat, the upper end of the lightning protection shielding cable passes through the insulating seat and is connected with the lightning rod, the lower end of the lightning protection shielding cable is located outside the ground and is sleeved with a non-magnetic steel pipe, the upper end of the non-magnetic steel pipe is connected with the first composite grounding net, and the lower end of the lightning protection shielding cable passes through the non-magnetic steel pipe and is connected with the second composite grounding net.

2. The lightning and electromagnetic interference protection composite grounding grid according to claim 1, characterized in that: The non-magnetic steel pipe is externally provided with an electromagnetic shielding layer and is internally filled with silica gel.

3. The lightning and electromagnetic interference protection composite grounding grid according to claim 1, wherein: The first composite grounding net and the second composite grounding net each include a frame body surrounding a square and a graphite grounding wire arranged in a staggered manner in the frame body to form a grid net structure.

4. The lightning and electromagnetic interference protection composite grounding grid according to claim 3, characterized in that: The frame body is surrounded by the coarse graphite grounding wire.

5. The lightning and electromagnetic interference protection composite grounding grid according to claim 4, characterized in that: The grounding electrode assembly includes at least one grounding electrode fixedly connected with the frame body and the grid net structure.

6. The lightning and electromagnetic interference protection composite grounding grid according to claim 4, characterized in that: The graphite grounding wire is externally provided with a fixing member, and the fixing member includes an upper shell and a lower shell.

7. The lightning and electromagnetic interference protection composite grounding grid according to claim 6, characterized in that: The upper shell is provided with a first connecting portion on one side and a circular-arc protrusion on the other side, the first connecting portion is provided with a clamping protrusion on the outer edge, and the first connecting portion is provided with four first semicircles.

8. The lightning and electromagnetic interference protection composite grounding grid according to claim 7, characterized in that: The lower shell is provided with a second connecting portion on one side and a circular-arc protrusion on the other side, the second connecting portion is provided with a clamping groove on the outer edge, and the second connecting portion is provided with four second semicircles.

9. The lightning and electromagnetic interference protection composite grounding grid according to claim 7, characterized in that: The clamping protrusion is clamped into the clamping groove to be fixed, and the four first semicircles and the corresponding four second semicircles form four wire holes.

10. The lightning and electromagnetic interference protection composite grounding grid according to claim 6, characterized in that: The four wire holes are uniformly distributed. The wire hole on one side of the four wire holes forms an acute angle with the adjacent wire hole, and the wire hole on the other side forms an obtuse angle with the adjacent wire hole. The fixing cavity is a cross shape connecting the four wire holes.

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