A lightning protection grounding device for industrial buildings

Abstract

The utility model relates to the field of lightning protection technology, and specifically discloses a lightning protection grounding device for industrial buildings, including a grounding line, a lightning protection line and a connection box. The connection box is arranged outside the factory building, and two copper bars are arranged therein, which are respectively conductively connected to the grounding line and the lightning protection line, and a detachable copper sheet is arranged between the two copper bars. An independent grounding line composed of a single-core cable and a copper-clad steel rod is laid in the structural bottom plate and the wall column; a circle of artificial horizontal grounding grid and vertical grounding body are separately laid outside the factory building to form a lightning protection line; the grounding line and the lightning protection line are connected together through a grounding test connection box arranged outside to form a comprehensive grounding grid, thereby effectively reducing the resistance value. In the thunderstorm season, the connecting piece connecting the two copper bars in the outside grounding test connection box can also be disconnected, thereby separating the grounding line and the lightning protection line to form two sets of independently operating systems, so as to prevent electromagnetic disturbance caused by lightning strikes from having a negative impact on the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection, in particular to a lightning protection grounding device for industrial buildings. Background Art

[0002] The lightning protection grounding system is an important part of the safety protection of buildings and electrical equipment. Its main purpose is to reduce the damage of lightning strikes to buildings and equipment through reasonable design and construction, and ensure the safety of personnel and the normal operation of equipment. The existing lightning protection grounding system mostly adopts a shared comprehensive grounding system, which uses the foundation ring beam and the steel bars in the foundation to make an artificial grounding device, and uses the main bars in the structural piles and wall columns as lightning protection leads. It has the advantages of simple structure and low investment. However, when lightning strikes or equipment fails, this lightning protection grounding system will cause instantaneous electromagnetic disturbances, which will have an adverse effect on the equipment in high-precision electronic factories, especially high-tech electronic factories such as chips. Utility Model Content

[0003] The technical problem solved by the utility model is that the current disturbance of the existing lightning protection grounding system is large, which is easy to cause adverse effects on the equipment in the high-precision electronic factory.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A lightning protection grounding device for industrial buildings, comprising:

[0006] Grounding circuit;

[0007] A lightning protection line, the lightning protection line comprising a conductively connected horizontal grounding grid and a vertical grounding body, the horizontal grounding grid being laid in a circle outside the factory building;

[0008] The connection box is arranged outside the factory building, and two copper bars are arranged inside the connection box, which are respectively conductively connected to the grounding line and the lightning protection line, and a detachable copper sheet is arranged between the two copper bars.

[0009] In one solution of the utility model: the copper busbar is a 50×6 double-sided tin-plated plate.

[0010] In one embodiment of the present invention: a plurality of equidistant copper bars are reserved on the copper bar. Each connection hole comes with a brass screw and a washer.

[0011] In one solution of the utility model: the grounding circuit includes a single-core cable and a copper-clad steel rod laid in a structural base plate and a wall column.

[0012] In one solution of the utility model: a PVC sleeve is provided outside the single-core cable.

[0013] In one solution of the utility model: the connection end of the single-core cable reserved outside the wall is used for connection with the terminal box, and the reserved length of the connection end is ≥0.16m.

[0014] Beneficial effects of the utility model:

[0015] An independent grounding line consisting of a single-core cable and copper-clad steel rod is laid in the structural floor and wall columns; a circle of artificial horizontal grounding grid and vertical grounding body is laid separately outside the factory to form a lightning protection line; the grounding line and the lightning protection line are connected together through a grounding test connection box located outside to form a comprehensive grounding grid, thereby effectively reducing the resistance value. Because it is completely isolated from the structural steel bars, the system's anti-interference ability is greatly enhanced. In the thunderstorm season, the connecting piece (copper sheet) connecting the two copper bars (grounding line and lightning protection line) in the outside grounding test connection box can be disconnected, and then the grounding line and lightning protection line can be separated to form two independently operating systems to prevent electromagnetic disturbances caused by lightning strikes from having a negative impact on the equipment.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of the lightning protection line construction of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the grounding line construction of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the connection box of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a partial section of the side of the connection box of the utility model.

[0022] The reference numerals in the figure are: 1. grounding line; 2. lightning protection line; 3. connection box; 4. copper busbar; 5. copper sheet; 6. terminal box. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] See also Figure 1-4 The utility model is a lightning protection and grounding device for industrial buildings, comprising a grounding line 1, a lightning protection line 2 and a connection box 3. The grounding line 1 comprises a single-core cable and a copper-clad steel rod laid in the structural base plate and the wall column. The electric core copper core cable is adopted to improve the conductivity and anti-interference performance. The single-core cable is provided with a PVC sleeve on the outside. The electric core cable in the wall column is laid in the PVC sleeve for easy maintenance. The specification of the single-core cable can be 95mm. A PVC sleeve DN32 reserved in the concrete column is arranged outside. The single-core cable is reserved for the connection end of the wall for connection with the grounding terminal box 6, and the reserved length of the connection end is ≥0.16m. Its specific length is determined according to the position of the grounding terminal box 6.

[0027] See also Figure 1-4 In one embodiment of the utility model, the lightning protection line 2 includes a conductively connected horizontal grounding grid and a vertical grounding body, and the horizontal grounding grid is laid in a circle outside the factory building; the horizontal grounding grid can be composed of a number of 95mm single-core cables, and the connection position is fixed by hot welding. At the same time, a connector structure can be set at the connection position to ensure the connection performance.

[0028] See also Figure 1-4In one embodiment of the utility model, the connection box 3 is arranged outside the factory building, and two copper bars 4 are arranged therein, which are respectively connected to the grounding line 1 and the lightning protection line 2, and a detachable copper sheet 5 is arranged between the two copper bars 4. The grounding line 1 and the lightning protection line 2 can be connected / disconnected through the copper sheet 5. The copper bar 4 can be a double-sided tin plate of 50×6. Multiple equidistant copper bars are reserved on the copper bar 4. Each connection hole is equipped with a brass screw and a gasket for connecting to the grounding line 1 and the lightning protection line 2. Figure 3 As shown, the upper cable on the right side can be a 120mm single-core cable, connected to the lightning protection embedded part. The middle part on the right side can be a 120mm single-core cable, connected to the grounding electrode of the artificial lightning protection line 2. The lower part on the right side can be a 95mm single-core cable, connected to the grounding test rod. The upper contact of the left copper busbar 4 can be a 95mm single-core cable, connected to the grounding test rod. The lower part can be a 120mm single-core cable, connected to the grounding trunk line. The copper busbar 4 can be fixedly connected to the channel iron provided in the box, and an insulating bakelite is provided between the two.

[0029] The working principle of the utility model is as follows: an independent grounding line 1 composed of a single-core cable and a copper-clad steel rod is laid in the structural bottom plate and the wall column; a circle of artificial horizontal grounding network and vertical grounding body are laid separately outside the factory to form a lightning protection line 2; the grounding line 1 and the lightning protection line 2 are connected together through a grounding test connection box 3 arranged on the outside to form a comprehensive grounding network, thereby effectively reducing the resistance value. In the thunderstorm season, the connecting piece (copper sheet 5) connecting the two copper bars 4 (grounding line 1 and lightning protection line 2) in the outside grounding test connection box 3 can be disconnected, thereby separating the grounding line 1 and the lightning protection line 2 to form two sets of independently operating systems, thereby preventing the electromagnetic disturbance caused by lightning strikes from having a negative impact on the equipment.

[0030] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the claims of the utility model.

Claims

1. A lightning protection grounding device for industrial buildings, characterized in that: include: Ground circuit (1); A lightning protection line (2), the lightning protection line (2) comprising a conductively connected horizontal grounding grid and a vertical grounding body, the horizontal grounding grid being laid in a circle outside the factory building; A connection box (3) is arranged outside a factory building, and two copper bars (4) are arranged therein and are respectively connected to a grounding line (1) and a lightning protection line (2) in an electrically conductive manner, and a detachably connected copper sheet (5) is arranged between the two copper bars (4).

2. A lightning protection grounding device for industrial buildings according to claim 1, characterized in that: The copper busbar (4) is a 50×6 double-sided tin-plated plate.

3. A lightning protection grounding device for industrial buildings according to claim 2, characterized in that: A plurality of equidistantly reserved portions are provided on the copper bar (4). Each connection hole comes with a brass screw and a washer.

4. A lightning protection grounding device for industrial buildings according to claim 3, characterized in that: The grounding line (1) comprises a single-core cable and a copper-clad steel rod laid in a structural base plate and a wall column.

5. A lightning protection grounding device for industrial buildings according to claim 4, characterized in that: The single-core cable is provided with a PVC sleeve outside.

6. A lightning protection grounding device for industrial buildings according to claim 5, characterized in that: The connection end of the single-core cable reserved outside the wall is used for connection with the terminal box (6), and the reserved length of the connection end is ≥0.16m.

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