Grounding lightning protection structure and photovoltaic grounding system

Abstract

The utility model relates to a grounding lightning protection structure and a photovoltaic grounding system. The grounding lightning protection structure comprises a horizontal grounding body, the horizontal grounding body comprises a middle connecting plate body which is formed in a split mode and vertically combined into a whole, and the middle connecting plate body comprises a first connecting plate body and a second connecting plate body. The first connecting plate body and the second connecting plate body are each provided with a first arm part, a second arm part and a flexible part connected between the first arm part and the second arm part, and the flexible parts are used for changing the relative angle between the first arm parts and the second arm parts. Therefore, when the first connecting plate body and the second connecting plate body are combined up and down at the position where the flexible part is located to form the middle connecting plate body, the middle connecting plate body has various changeable combination forms. The photovoltaic grounding system comprises the grounding lightning protection structure. According to the utility model, the connection stability between steel materials in the grounding lightning protection structure of the photovoltaic grounding system is improved, and the grounding lightning protection structure can adapt to installation under complex ground conditions.

Description

Technical Field

[0001] This utility model relates to the photovoltaic field, and in particular to a grounding lightning protection structure and a photovoltaic grounding system. Background Technology

[0002] During the operation of photovoltaic power generation equipment, the quality of lightning protection, i.e., grounding, determines the stability of the equipment's performance. Currently, the most commonly known grounding electrodes are vertical and horizontal. Vertical grounding electrodes are mainly used in areas with low soil resistivity and clay or black soil (i.e., where the grounding electrode is easily driven into the soil, and the resistance of a single grounding electrode does not exceed 100Ω). Horizontal grounding electrodes are mainly used in areas with high soil resistivity and sandy or rocky soil (i.e., where the grounding electrode is not easily driven into the soil, and the resistance of a single grounding electrode exceeds 100Ω). Existing technology also includes composite grounding electrodes that combine horizontal and vertical grounding electrodes into one unit. The horizontal grounding electrode portion of the composite grounding electrode includes multiple horizontal and multiple vertical steel members extending crisscrossing on a horizontal plane. The vertical grounding electrode portion of the composite grounding electrode includes multiple vertical steel members perpendicular to the horizontal plane where the horizontal and vertical steel members intersect. Therefore, how to stably connect multiple steel components, especially the connection stability of the horizontal grounding part, has become a problem that needs to be solved in the grounding and lightning protection structure in the photovoltaic field. In addition, for application scenarios with more complex construction conditions, although the horizontal grounding body is installed in a horizontal plane as a whole, the horizontal steel components and the connected vertical steel components sometimes need to be installed with a difference in horizontal angle (e.g., 90 degrees ± 10 degrees) to avoid obstacles. How to achieve installation under such complex conditions is an urgent problem to be solved. Utility Model Content

[0003] The purpose of this utility model is to provide a grounding lightning protection structure and a photovoltaic grounding system, which improves the connection stability between steel materials in the grounding lightning protection structure of the photovoltaic grounding system and can adapt to installation under complex ground conditions.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a grounding and lightning protection structure, including a horizontal grounding body, wherein the horizontal grounding body includes a middle connecting plate that is separately formed and joined together vertically, the middle connecting plate includes a first connecting plate and a second connecting plate, both the first connecting plate and the second connecting plate are provided with a first arm, a second arm and a flexible part connected between the first arm and the second arm, the flexible part is used to change the relative angle between the first arm and the second arm, so that when the first connecting plate and the second connecting plate are joined vertically at the position of the flexible part to form the middle connecting plate, the middle connecting plate has a variety of different joining forms.

[0005] As a further improvement of this utility model, the first arm and the second arm are made of metal materials with high hardness and not easy to bend, while the flexible part is made of metal materials with low hardness and can be bent.

[0006] As a further improvement of the present invention, the first arm and the second arm are both made of hard steel with a carbon content of 0.50% to 0.80%, and the flexible part is made of soft steel with a carbon content of 0.20% to 0.30%.

[0007] As a further improvement of the present invention, the first connecting plate and the second connecting plate are both I-shaped and L-shaped; the intermediate connecting plate has at least one bend, and when viewed from a top-down angle, the entire intermediate connecting plate is either T-shaped or cross-shaped.

[0008] As a further improvement of the present invention, the flexible part is located at the position of the upper and lower parts to form the base of the intermediate connecting plate. The first arm and the second arm have the same thickness in the upper and lower directions, and the thickness of the base in the upper and lower directions is twice the thickness of the first arm or the second arm in the upper and lower directions.

[0009] As a further improvement of the present invention, the horizontal grounding body is a grid formed by connecting multiple flat steel bars through the intermediate connecting plate.

[0010] As a further improvement of the present invention, the plurality of flat steel bars include interlaced transverse steel bars and longitudinal steel bars, and the intermediate connecting plate is disposed at a non-corner position where the transverse steel bars and the longitudinal steel bars intersect.

[0011] As a further improvement of the present invention, the invention also includes a vertical grounding electrode, which is disposed below the horizontal grounding electrode.

[0012] As a further improvement of this utility model, the vertical grounding body is an angle steel.

[0013] To achieve the above objectives, the present invention adopts the following technical solution two: a photovoltaic grounding system, including a column and a photovoltaic module installed on the column, and also including the grounding and lightning protection structure as described above. The column is fixed above the ground, and the grounding and lightning protection structure is buried below the ground. The column is provided with a metal lead wire connected to the horizontal grounding body. The photovoltaic module transmits a grounding signal to the grounding and lightning protection structure through the metal lead wire in the column.

[0014] Compared to existing technologies, this utility model uses a horizontal grounding body including an intermediate connecting plate. The intermediate connecting plate is positioned at the intersection of the transverse and longitudinal steel members, ensuring the connection stability between the steel members. The flexible part is used to change the relative angle between the first arm and the second arm, so that when the first connecting plate and the second connecting plate are combined vertically at the location of the flexible part to form the intermediate connecting plate, the intermediate connecting plate has various combination forms. This utility model's grounding and lightning protection structure can adjust to adapt to the difference in horizontal angle between the transverse and longitudinal steel members, meeting the installation needs of complex ground conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the grounding and lightning protection structure of this utility model, in which both the first connecting plate and the second connecting plate are I-shaped.

[0016] Figure 2 This is a schematic diagram of Embodiment 2, in which both the first connecting plate and the second connecting plate in the grounding and lightning protection structure of this utility model are L-shaped;

[0017] Figure 3 This is a three-dimensional exploded view of Embodiment 1 of the grounding and lightning protection structure of this utility model before the intermediate connecting plate is assembled, wherein the intermediate connecting plate is composed of an L-shaped first connecting plate and an I-shaped second connecting plate.

[0018] Figure 4 yes Figure 3 A three-dimensional combination diagram of an embodiment 1 showing an intermediate connecting plate formed by combining an L-shaped first connecting plate and an I-shaped second connecting plate, wherein the angle of the intermediate connecting plate shown here is not a uniquely determined 90 degrees, but 90 degrees ± 10 degrees.

[0019] Figure 5 This is a three-dimensional exploded view of Embodiment 2 of the grounding and lightning protection structure of this utility model before the intermediate connecting plate is assembled, wherein the intermediate connecting plate is composed of two L-shaped first connecting plates and a second connecting plate.

[0020] Figure 6 yes Figure 5 A three-dimensional combination diagram of an intermediate connecting plate formed by combining an L-shaped first connecting plate and an L-shaped second connecting plate, wherein the angle of the intermediate connecting plate shown here is not a uniquely determined 90 degrees, but 90 degrees ± 10 degrees.

[0021] Figure 7This is a three-dimensional exploded view of Embodiment 3 of the grounding and lightning protection structure of this utility model before the intermediate connecting plate is assembled. The intermediate connecting plate is also composed of two L-shaped first connecting plates and second connecting plates.

[0022] Figure 8 yes Figure 7 A three-dimensional combination diagram of an intermediate connecting plate formed by combining an L-shaped first connecting plate and an L-shaped second connecting plate in Embodiment 3, wherein the angle of the intermediate connecting plate shown here is not a uniquely determined 90 degrees, but 90 degrees ± 10 degrees.

[0023] Figure 9 This is a schematic diagram of the grounding and lightning protection structure of this utility model in use;

[0024] Figure 10 This is another schematic diagram showing the usage state of the grounding and lightning protection structure of this utility model;

[0025] Figure 11 This is a top view of the grounding and lightning protection structure of this utility model when there is no difference in the horizontal angle of the horizontal grounding body.

[0026] Figure 12 yes Figure 11 Enlarged view of section A in the middle;

[0027] Figure 13 yes Figure 11 Enlarged view of section B;

[0028] Figure 14 Is with Figure 12 A similar enlarged view of section A, but there is a difference in the horizontal angle between the transverse and longitudinal steel members of the horizontal grounding electrode at this location;

[0029] Figure 15 Is with Figure 13 A similar enlarged view of section B, but at this location, there is a difference in the horizontal angle between the transverse and longitudinal steel members of the horizontal grounding electrode. Detailed Implementation

[0030] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0031] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0032] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "front," "back," "left," "right," "upper," "lower," and similar words appearing in this utility model are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. If "several" appears in this utility model, it means two or more.

[0033] Please refer to Figures 1 to 15 As shown, this utility model discloses a grounding lightning protection structure 100, including a horizontal grounding body 11. The horizontal grounding body 11 includes a middle connecting plate 10, which is formed separately and then joined together vertically. The middle connecting plate 10 includes a first connecting plate 101 and a second connecting plate 102. Both the first connecting plate 101 and the second connecting plate 102 are provided with a first arm 1001, a second arm 1002, and a flexible part 1003 connecting the first arm 1001 and the second arm 1002. The flexible part 1003 is used to change the relative angle between the first arm 1001 and the second arm 1002, so that when the first connecting plate 101 and the second connecting plate 102 are joined vertically at the position of the flexible part 1003 to form the middle connecting plate 10, the middle connecting plate 10 has various combinations. The grounding and lightning protection structure 100 of this utility model can adjust to adapt to the difference in horizontal angle between the horizontal steel 1101 and the vertical steel 1102, thus meeting the installation needs of complex ground conditions.

[0034] Please refer to Figures 1 to 8As shown, the first arm 1001 and the second arm 1002 are made of a hard metal material that is difficult to bend, while the flexible part 1003 is made of a soft metal material that is bendable. The metal materials are easy to weld and fix, facilitating the connection and fixation of the first connecting plate 101 and the second connecting plate 102. In a specific embodiment, both the first arm 1001 and the second arm 1002 are made of hard steel with a carbon content of 0.50% to 0.80%, and the flexible part 1003 is made of soft steel with a carbon content of 0.20% to 0.30%. The selection of hard steel and soft steel for the first arm 1001, the second arm 1002, and the flexible part 1003 ensures the strength of both the first arm 1001 and the second arm 1002, while also facilitating the bendability of the flexible part 1003, allowing for bending between the first arm 1001 and the second arm 1002 to form the required angle.

[0035] Please continue to refer to Figures 1 to 8 As shown, the first connecting plate 101 and the second connecting plate 102 are each stamped into an I-shape or an L-shape, therefore, both the first connecting plate 101 and the second connecting plate 102 are either I-shaped or L-shaped. When the I-shaped or L-shaped first connecting plate 101 and the second connecting plate 102 are joined, the intermediate connecting plate 10 has at least one bend, please refer to... Figure 4 , Figure 6 and Figure 8 Viewed from above, the entire intermediate connecting plate 10 can be selectively combined into either a T-shape or a cross-shaped structure. For example, when the first connecting plate 101 is I-shaped and the second connecting plate 102 is L-shaped, it can be combined into a T-shaped intermediate connecting plate 10; when both the first and second connecting plates 101 and 102 are L-shaped, it can also be combined into a T-shaped intermediate connecting plate 10; and when both the first and second connecting plates 101 and 102 are L-shaped, it can also be combined into a cross-shaped intermediate connecting plate 10. Of course, please refer to... Figures 12 to 15 The angle between the T-shaped and cross-shaped structures is not limited to a 90-degree angle; 90 degrees ± 10 degrees are within the allowable range.

[0036] Please refer to Figures 3 to 8 As shown, the flexible part 1003 is located at a position where it is joined vertically to form the base 1000 of the intermediate connecting plate 10. The first arm 1001 and the second arm 1002 have equal thicknesses in the vertical direction, and the thickness of the base 1000 in the vertical direction is twice the thickness of either the first arm 1001 or the second arm 1002 in the vertical direction. With this configuration, the present invention can not only adapt to the difference in horizontal angle between the transverse steel 1101 and the longitudinal steel 1102, but also achieve a good degree of height matching.

[0037] Please refer to Figures 1 to 15 As shown, with particular reference Figure 11 The horizontal grounding electrode 11 is a grid-like structure formed by connecting multiple flat steel bars 110 through an intermediate connecting plate 10. This grid-like horizontal grounding electrode 11 can better receive grounding signals transmitted from the photovoltaic module 200 via the ground-mounted column 2 and ensure the stability of the grounding and lightning protection structure 100 buried underground. In summary, the intermediate connecting plate 10 is positioned at a non-corner location where the horizontal steel bars 1101 and vertical steel bars 1102 intersect. Therefore, it should be noted that the grounding and lightning protection structure 100 is not suitable for connecting horizontal steel bars 1101 and vertical steel bars 1102 at corner locations.

[0038] Please refer to Figures 11 to 15 As shown, the multiple flat steel bars 110 include interlaced transverse steel bars 1101 and longitudinal steel bars 1102, with the intermediate connecting plate 10 located at a non-corner position where the transverse steel bars 1101 and longitudinal steel bars 1102 intersect.

[0039] Please refer to Figure 9 and Figure 10 As shown, the grounding and lightning protection structure 100 of this utility model also includes a vertical grounding body 12, which is disposed below the horizontal grounding body 11. The function of the vertical grounding body 12 is to make it easier to drive the horizontal grounding body 11, which is not easy to drive into the soil, into the soil by connecting it to the vertical grounding body 12 below.

[0040] Please continue to refer to Figure 9 and Figure 10 As shown in the specific embodiment, the vertical grounding electrode 12 is an angle steel, and the function of the angle steel is to be easily driven into the soil.

[0041] Please refer to Figures 1 to 15 As shown, this utility model also relates to a photovoltaic grounding system 300, which includes a column 2 and a photovoltaic module 200 disposed on the column 2, as well as a grounding lightning protection structure 100 as described above. The column 2 is fixed above the ground 3, and the grounding lightning protection structure 100 is buried below the ground 3. The column 2 is provided with a metal lead 4 connected to a horizontal grounding body 11. The photovoltaic module 200 transmits a grounding signal to the grounding lightning protection structure 100 through the metal lead 4 in the column 2.

[0042] In summary, compared with the prior art, this utility model, through the horizontal grounding body 11 including the intermediate connecting plate 10, which is set at the cross position of the transverse steel 1101 and the longitudinal steel 1102, ensures the connection stability between the steel materials; the flexible part 1003 is used to change the relative angle between the first arm 1001 and the second arm 1002, so that when the first connecting plate 101 and the second connecting plate 102 are combined vertically at the position of the flexible part 1003 to form the intermediate connecting plate 10, the intermediate connecting plate 10 has a variety of different combination forms. The grounding and lightning protection structure 100 of this utility model can adjust and adapt to the difference in horizontal angle between the transverse steel 1101 and the longitudinal steel 1102, meeting the installation needs of complex ground conditions.

[0043] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of the present utility model should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A grounding lightning protection structure, characterized in that: The system includes a horizontal grounding electrode (11), which includes a split-formed intermediate connecting plate (10) that is joined together vertically. The intermediate connecting plate (10) includes a first connecting plate (101) and a second connecting plate (102). Both the first connecting plate (101) and the second connecting plate (102) are provided with a first arm (1001), a second arm (1002), and a flexible part (1003) connecting the first arm (1001) and the second arm (1002). The flexible part (1003) is used to change the relative angle between the first arm (1001) and the second arm (1002), so that when the first connecting plate (101) and the second connecting plate (102) are joined vertically at the position of the flexible part (1003) to form the intermediate connecting plate (10), the intermediate connecting plate (10) has a variety of different joining forms.

2. The grounding and lightning protection structure as described in claim 1, characterized in that: The first arm (1001) and the second arm (1002) are made of a metal material with high hardness and not easy to bend, while the flexible part (1003) is made of a metal material with low hardness and can be bent.

3. The grounding and lightning protection structure as described in claim 2, characterized in that: The first arm (1001) and the second arm (1002) are both hard steel with a carbon content of 0.50% to 0.80%, and the flexible part (1003) is soft steel with a carbon content of 0.20% to 0.30%.

4. The grounding and lightning protection structure as described in claim 1, characterized in that: The first connecting plate (101) and the second connecting plate (102) are both I-shaped and L-shaped; the intermediate connecting plate (10) has at least one bend, and when viewed from above, the entire intermediate connecting plate (10) is either T-shaped or cross-shaped.

5. The grounding and lightning protection structure as described in claim 4, characterized in that: The flexible part (1003) is located at the position of the upper and lower parts to form the base (1000) of the intermediate connecting plate (10). The first arm (1001) and the second arm (1002) have the same thickness in the vertical direction. The thickness of the base (1000) in the vertical direction is twice the thickness of the first arm (1001) or the second arm (1002) in the vertical direction.

6. The grounding and lightning protection structure as described in claim 1, characterized in that: The horizontal grounding electrode (11) is a grid formed by connecting multiple flat steel bars (110) through the intermediate connecting plate (10).

7. The grounding and lightning protection structure as described in claim 6, characterized in that: The plurality of flat steel bars (110) include staggered transverse steel bars (1101) and longitudinal steel bars (1102), and the intermediate connecting plate (10) is disposed at a non-corner position where the transverse steel bars (1101) and the longitudinal steel bars (1102) are staggered.

8. The grounding and lightning protection structure as described in claim 1, characterized in that: It also includes a vertical grounding electrode (12), which is disposed below the horizontal grounding electrode (11).

9. The grounding and lightning protection structure as described in claim 8, characterized in that: The vertical grounding electrode (12) is an angle steel.

10. A photovoltaic grounding system, comprising a column (2) and a photovoltaic module (200) disposed above the column (2), characterized in that: It also includes a grounding lightning protection structure (100) as described in any one of claims 1 to 9 above, wherein the column (2) is fixed above the ground (3), the grounding lightning protection structure (100) is buried below the ground (3), the column (2) is provided with a metal lead (4) connected to the horizontal grounding body (11), and the photovoltaic module (200) transmits a grounding signal to the grounding lightning protection structure (100) through the metal lead (4) in the column (2).

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