Prefabricated grounding module based on roof photovoltaic grounding

Abstract

The utility model discloses a prefabricated grounding module based on roof photovoltaic grounding, particularly relates to the technical field of photovoltaic power generation, and comprises a grounding module, the front side surface of the grounding module is provided with a first threaded hole, and one side of the grounding module is provided with a grounding installation mechanism. The grounding installation mechanism comprises a photovoltaic guide rail, and the photovoltaic guide rail is installed on one side of the grounding module. Through the arrangement of the grounding installation mechanism and the design of the T-shaped grounding module, the contact area of the flat steel and the guide rail is increased, the problem of conductivity caused by a guide rail groove and an aluminum alloy surface oxidation film in an existing connection mode is effectively solved, when the flat steel is parallel to the guide rail, the grounding module can be conveniently connected, and the service life of the flat steel is prolonged. The problem that connection is difficult in a traditional mode is solved, the prefabricated grounding module is adopted, standardized production can be carried out in a factory, production efficiency and product quality are improved, and meanwhile construction cost increased when hot galvanizing flat steel is adopted for connection is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, and more specifically, the utility model relates to a prefabricated grounding module based on roof photovoltaic grounding. Background Technique

[0002] In recent years, with the rapid development of the new energy industry in China, the roof photovoltaic power generation technology has become increasingly mature. At present, the grounding device of conventional photovoltaic projects generally adopts a composite grounding grid composed of hot-dip galvanized flat steel and galvanized steel pipes. The grounding of roof photovoltaic generally lays a circle of hot-dip galvanized flat steel near the photovoltaic modules on the roof as the main grounding wire. The photovoltaic module support is connected to the main grounding wire, and then the main grounding wire is connected to the roof lightning protection belt nearby or led down along the wall to the ground to complete the grounding of the photovoltaic area.

[0003] In roof photovoltaic projects, especially in industrial and commercial color steel tile roofs, due to factory area restrictions, open flames are not allowed on the roof during the construction process. Therefore, the hot-dip galvanized flat steel cannot be welded on the roof and can only be bolted. The color steel tile roof is generally fixed on the color steel tile roof with aluminum alloy rails, clamps and pressing blocks, etc. When the grounding flat steel runs perpendicular to the rail, the rail length can be increased, and it is fixed above the rail with self-tapping screws. When the flat steel runs parallel to the rail, additional clamps are required and fixed on the clamps, and then connected to the rail through flat steel or hot-dip galvanized flat steel.

[0004] However, the above methods have the following difficulties. When the flat steel is directly fixed on the rail, there are grooves above the rail, and the oxide film on the aluminum alloy surface will affect the conductivity. Therefore, the contact surface between the flat steel and the rail is small, which will affect the conductivity of the grounding grid; when the flat steel is parallel to the rail, there is a height difference between the two during installation, so it is very difficult to connect with the flat steel, and the overall aesthetics will also be affected after installation. When using hot-dip galvanized flat steel for connection, due to the cross-section requirements of the grounding body in the grounding specification, using copper wires that meet the specification requirements will greatly increase the construction cost. Content of the Utility Model

[0005] In order to overcome the problems and defects in the prior art, the utility model provides a prefabricated grounding module based on roof photovoltaic grounding to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A prefabricated grounding module based on roof photovoltaic grounding, including a grounding module, a first threaded hole is opened on the front surface of the grounding module, and a grounding installation mechanism is arranged on one side of the grounding module;

[0007] The grounding installation mechanism includes a photovoltaic guide rail, which is installed on one side of the grounding module. Self-tapping screw mounting holes are provided on the surfaces of both the photovoltaic guide rail and one side of the grounding module. Self-tapping screws are installed inside the self-tapping screw mounting holes. One end of the self-tapping screw is fixedly connected to a self-tapping screw nut. A puncture gasket is installed between the photovoltaic guide rail and the grounding module, and the puncture gasket is sleeved outside the self-tapping screw. A main grounding wire for the photovoltaic area is provided on the top of the grounding module. Second threaded holes are provided on the surface of the main grounding wire for the photovoltaic area. Installation bolts are provided inside both the second threaded holes and the first threaded holes. A guide rail installation bolt is provided between the photovoltaic guide rail and the grounding module.

[0008] Preferably, both the guide rail installation bolt and the installation bolt are threadedly connected to the second threaded hole and the first threaded hole.

[0009] Preferably, the outer diameter of the self-tapping screw nut is larger than the aperture of the self-tapping screw mounting hole, and anti-slip threads are provided on the surface of the self-tapping screw nut.

[0010] Preferably, cross slots or hexagon socket slots are provided on the heads of both the installation bolt and the guide rail installation bolt.

[0011] Preferably, the main grounding wire for the photovoltaic area is made of hot-dip galvanized flat steel, and the puncture gasket is made of hot-dip galvanized steel.

[0012] Preferably, the grounding module is in a T shape, and its bending angle is °-°.

[0013] Preferably, the photovoltaic guide rail is made of aluminum alloy, and its surface is anodized.

[0014] The technical effects and advantages of the present utility model:

[0015] 1. By setting up the grounding installation mechanism and through the design of the T-shaped grounding module, the contact area between the flat steel and the guide rail is increased, effectively overcoming the conductivity problems caused by the guide rail groove and the aluminum alloy surface oxide film in the existing connection method. When the flat steel is parallel to the guide rail, the grounding module can be conveniently connected, solving the problem of difficult connection in the traditional method. By using prefabricated grounding modules, standardized production can be carried out in the factory, improving production efficiency and product quality, and at the same time avoiding the increased construction cost when using hot-dip galvanized flat steel for connection;

[0016] 2. Due to the anti-slip threads provided on the surface of the self-tapping screw nut, and cross slots or hexagon socket slots provided on the heads of the installation bolt and the guide rail installation bolt, it is convenient for construction workers to carry out installation operations. The photovoltaic guide rail is made of aluminum alloy and is anodized, improving its corrosion resistance and service life; the puncture gasket is made of hot-dip galvanized steel, ensuring the reliability of grounding. Description of the Drawings

[0017] Figure 1This is one of the installations of the grounding module of the present utility model and the main grounding wiring in the photovoltaic area.

[0018] Figure 2 This is the second installation of the grounding module of the present utility model and the main grounding wiring in the photovoltaic area.

[0019] Figure 3 This is the schematic top view structure diagram of the present utility model.

[0020] Figure 4 This is the schematic side view structure diagram of the present utility model.

[0021] Figure 5 This is the schematic cross-sectional view structure diagram of the side of the grounding module of the present utility model.

[0022] The reference numerals are: 1, grounding module; 2, first threaded hole; 3, self-tapping screw mounting hole; 4, photovoltaic rail; 5, self-tapping screw nut; 6, self-tapping screw; 7, piercing gasket; 8, second threaded hole; 9, mounting bolt; 10, rail mounting bolt; 11, shock-absorbing gasket; 12, fixing nut; 13, main grounding wiring in the photovoltaic area. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] As shown in the attached Figures 1-5 A prefabricated grounding module based on rooftop photovoltaic grounding, including a grounding module 1, a first threaded hole 2 is opened on the front surface of the grounding module 1, and a grounding installation mechanism is arranged on one side of the grounding module 1;

[0025] The grounding installation mechanism includes a photovoltaic rail 4, the photovoltaic rail 4 is installed on one side of the grounding module 1, self-tapping screw mounting holes 3 are opened on the surfaces of both the photovoltaic rail 4 and one side of the grounding module 1, a self-tapping screw 6 is installed inside the self-tapping screw mounting hole 3, one end of the self-tapping screw 6 is fixedly connected with a self-tapping screw nut 5, a piercing gasket 7 is installed between the photovoltaic rail 4 and the grounding module 1, the piercing gasket 7 is sleeved outside the self-tapping screw 6, a main grounding wiring 13 in the photovoltaic area is arranged on the top of the grounding module 1, a second threaded hole 8 is opened on the surface of the main grounding wiring 13 in the photovoltaic area, mounting bolts 9 are arranged inside both the second threaded hole 8 and the first threaded hole 2, and a rail mounting bolt 10 is arranged between the photovoltaic rail 4 and the grounding module 1.

[0026] As shown in the attached Figures 1-5As shown, both the guide rail mounting bolt 10 and the mounting bolt 9 are threadedly connected between the second threaded hole 8 and the first threaded hole 2. Threaded connection provides reliable connection, and is convenient for installation and disassembly.

[0027] As shown in the appendix Figure 1 、 2 As shown, the outer diameter of the self-tapping nut 5 is larger than the aperture of the self-tapping mounting hole 3, and the surface of the self-tapping nut 5 is provided with anti-slip threads. The outer diameter of the self-tapping nut 5 being larger than the aperture of the mounting hole 4 can ensure that the self-tapping screw 6 will not fall out of the hole after installation, increasing the stability of the connection.

[0028] As shown in the appendix Figure 1 、 2 As shown, the heads of the mounting bolt 9 and the guide rail mounting bolt 10 are both provided with a cross slot or an internal hexagonal slot. Setting a cross slot or an internal hexagonal slot can facilitate the installation and disassembly operations using corresponding tools.

[0029] As shown in the appendix Figure 1 、 2 As shown, the main grounding wire 13 in the photovoltaic area is made of hot-dip galvanized flat steel, and the piercing gasket 7 is made of hot-dip galvanized steel. The hot-dip galvanized flat steel material improves the conductivity and flexibility of the main grounding wire 13 in the photovoltaic area.

[0030] As shown in the appendix Figures 1-5 As shown, the shape of the grounding module 1 is T-shaped, and its bending angle is 85° - 95°. A bending angle between 85° - 95° can ensure that the grounding module 1 has sufficient stability and strength after installation, and at the same time will not affect its connection effect with other components due to too large or too small an angle.

[0031] As shown in the appendix Figure 1 、 2 As shown, the photovoltaic guide rail 4 is made of aluminum alloy, and its surface is anodized. Anodizing can also form a dense oxide film on the surface of the photovoltaic guide rail 4, improving its insulation performance and reducing the risk of electric leakage.

[0032] Working principle of the utility model: When the prefabricated grounding module based on rooftop photovoltaic grounding of the utility model is in use, it mainly consists of a grounding module 1, a photovoltaic guide rail 4, a self-tapping screw 6, a self-tapping screw nut 5, a piercing gasket 7, a mounting bolt 9, a guide rail mounting bolt 10, etc. The grounding module 1 is in a T shape, with a bending angle between 85° and 95°. A first threaded hole 2 is provided thereon. The photovoltaic guide rail 4 is installed on one side of the grounding module 1. Self-tapping screw mounting holes 3 are provided on the surface of one side of both of them. The self-tapping screw 6 passes through the self-tapping screw mounting hole 3, and one end is fixedly connected to the self-tapping screw nut 5. A piercing gasket 7 is installed between the photovoltaic guide rail 4 and the grounding module 1, sleeved outside the self-tapping screw 6. A second threaded hole 8 is provided on the surface of the main photovoltaic ground connection wire 13 at the top of the grounding module 1, and it is connected to the grounding module 1 through the mounting bolt 9. A guide rail mounting bolt 10 is also provided between the photovoltaic guide rail 4 and the grounding module 1. When the direction of the grounding flat steel is perpendicular to the guide rail, the vertical part of the T-shaped grounding module 1 can be inserted into the groove above the guide rail and fixed by the self-tapping screw 6, which increases the contact area between the flat steel and the guide rail and improves the conductivity of the grounding grid. When the flat steel direction is parallel to the guide rail, the horizontal part of the T-shaped grounding module 1 can be fixed on the guide rail through a clamp, and then the flat steel is connected to the vertical part of the grounding module 1 through a bolt, solving the problem of difficult connection when the flat steel is parallel to the guide rail and also ensuring the overall aesthetics.

[0033] Finally: The above embodiments are only illustrative of the principles and effects of the utility model, rather than used to limit the utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A prefabricated grounding module based on rooftop photovoltaic grounding, comprising a grounding module (1), characterized in that: A first threaded hole (2) is provided on the front surface of the grounding module (1), and a grounding installation mechanism is arranged on one side of the grounding module (1). The grounding installation mechanism includes a photovoltaic guide rail (4). The photovoltaic guide rail (4) is installed on one side of the grounding module (1). Self-tapping installation holes (3) are provided on the surfaces of both the photovoltaic guide rail (4) and one side of the grounding module (1). A self-tapping screw (6) is installed inside the self-tapping installation hole (3). One end of the self-tapping screw (6) is fixedly connected to a self-tapping screw nut (5). A piercing gasket (7) is installed between the photovoltaic guide rail (4) and the grounding module (1). The piercing gasket (7) is sleeved outside the self-tapping screw (6). A main grounding wire (13) for the photovoltaic area is arranged on the top of the grounding module (1). A second threaded hole (8) is provided on the surface of the main grounding wire (13) for the photovoltaic area. Installation bolts (9) are arranged inside both the second threaded hole (8) and the first threaded hole (2). A guide rail installation bolt (10) is arranged between the photovoltaic guide rail (4) and the grounding module (1).

2. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, characterized in that: Both the guide rail installation bolt (10) and the installation bolt (9) are threadedly connected to the second threaded hole (8) and the first threaded hole (2).

3. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, wherein: The outer diameter of the self-tapping screw nut (5) is larger than the aperture of the self-tapping installation hole (3), and the surface of the self-tapping screw nut (5) is provided with anti-slip threads.

4. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, characterized in that: The heads of both the installation bolt (9) and the guide rail installation bolt (10) are provided with cross slots or hexagon socket slots.

5. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, wherein: The main grounding wire (13) for the photovoltaic area is made of hot-dip galvanized flat steel, and the piercing gasket (7) is made of hot-dip galvanized steel.

6. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, wherein: The grounding module (1) is in a T shape, and its bending angle is 85° - 95°.

7. The prefabricated grounding module based on rooftop photovoltaic grounding according to claim 1, characterized in that: The photovoltaic guide rail (4) is made of aluminum alloy, and its surface is subjected to anodic oxidation treatment.

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