Photovoltaic metal roof lightning protection system and construction method thereof

Abstract

The invention discloses a photovoltaic metal roof lightning protection system, the photovoltaic metal roof comprises roof panels, photovoltaic panels and connecting pieces, the roof panels are fixedly arranged on a lower rigid structure, the photovoltaic panels which are spliced in sequence are fixedly arranged above the roof panels, a middle support is arranged between every two adjacent roof panels, and the connecting pieces are connected with the middle support. Fixing pressing blocks are arranged above the connecting pieces, and photovoltaic panels are laid on the two sides of the connecting pieces; a lightning-protection support is arranged between every two adjacent roof panels, a lightning-protection metal sheet with one end extending out of the roof panels is arranged on each lightning-protection support, and the lightning-protection supports are fixedly connected with a steel structure below the lightning-protection supports to form a conductive whole. The photovoltaic roof lightning protection device can be installed on an original roof structure layer, a waterproof layer does not need to be damaged, the lightning protection performance of a photovoltaic roof can be improved only through a small metal sheet, the influence of a roof panel surface coating on the conductivity is avoided, and consumed and used materials are fewer.

Description

Technical Field

[0001] The invention belongs to the field of solar photovoltaic roof lightning protection, and in particular relates to a photovoltaic metal roof lightning protection system and a construction method thereof. Background Art

[0002] Photovoltaic roof systems are widely used as enclosure structures in modern steel structures. Photovoltaic power generation, as a clean and renewable energy source, is gaining more and more attention. However, since photovoltaic systems are often installed outdoors, they are vulnerable to the threat of lightning. Therefore, photovoltaic lightning arresters play a vital role in photovoltaic systems.

[0003] 1. Photovoltaic panels have safety hazards such as leakage and breakdown when working. In thunderstorm weather, photovoltaic panels without lightning protection measures may face the risk of lightning strikes, thus affecting the safety and service life of the equipment. In addition, lightning protection measures can also reduce equipment failures caused by lightning strikes and static electricity, thereby reducing maintenance costs and increasing equipment reliability.

[0004] 2. There are two commonly used lightning protection measures: one is external lightning rod, and the other is internal lightning protection. External lightning rod is to install a needle-shaped conductor on the building or equipment to protect the building or equipment by guiding lightning signals and discharge current; internal lightning protection is to install lightning arresters, lightning rods and other lightning protection devices inside the building or equipment to prevent lightning signals and discharge currents from damaging the equipment. Both have their advantages and disadvantages, but both have certain problems.

[0005] Therefore, a new type of photovoltaic metal roof lightning protection system is needed. Under normal circumstances, when photovoltaic panels encounter lightning strikes, they can discharge charges and currents to the ground in time, thereby avoiding the accumulation of charges and currents. Traditionally, photovoltaic panels are usually installed on the roof panels of buildings, and are connected to the building's grounding system to introduce charges and currents into the grounding system. However, considering that the roof panels are exposed to the outside and are affected by the natural environment, anti-corrosion materials are usually applied to the roof panels to improve the corrosion resistance of the roof panels. Therefore, the conductive properties of the roof panels are affected, resulting in the accumulation of charges and currents, and effective grounding cannot be achieved. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a photovoltaic metal roof lightning protection system and a construction method thereof, which solves the problem in the prior art that photovoltaic metal roof components cannot be effectively grounded.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] A photovoltaic metal roof lightning protection system, the photovoltaic metal roof comprises a roof panel, a photovoltaic panel, and a connector, wherein the roof panel is fixedly arranged on a lower rigid structure, the photovoltaic panels spliced ​​in sequence are fixedly arranged above the roof panel, a middle bracket is arranged between two adjacent roof panels, and the roof panel is fixed to the middle bracket through a connector, a fixed pressing block is arranged above the connector, and photovoltaic panels are laid on both sides; a lightning protection bracket is arranged between two adjacent roof panels, a lightning protection metal sheet with one end extending out of the roof panel is arranged on the lightning protection bracket, and the lightning protection bracket is fixedly connected to the steel structure below to form a conductive whole.

[0009] The connecting piece comprises a locking clamp and a locking bolt. The locking clamp clamps the edges of two adjacent roof panels and is locked and fixed by the locking bolt.

[0010] One end of the lightning protection metal sheet is connected to the lightning protection bracket, and the other end passes through two adjacent roof panels, with a section reserved to extend out of the roof panels, and the position connected with the roof panels is fixed on the roof panels.

[0011] The roof panel and the lightning protection metal sheet are welded and connected. The roof panel has a curled edge. The locking clamp clamps the curled edge. A section of the lightning protection metal sheet reserved is attached to the outer side of the locking clamp and fixed by locking clamp bolts.

[0012] The pressing block is arranged above the locking clamp and is fixed by a pressing block bolt.

[0013] The top of the locking clip is provided with a notch, and the pressure block bolt is inserted from the side of the notch.

[0014] The lightning protection bracket is a metal edge bracket structure with a slot at the upper end, and the lower end of the lightning protection metal sheet is fixed in the slot.

[0015] The construction method of the photovoltaic metal roof lightning protection system includes the following steps:

[0016] Step 1: Fix the lightning protection bracket and the middle bracket to the steel structure below;

[0017] Step 2: Fix the lower end of the lightning protection metal sheet on the lightning protection bracket;

[0018] Step 3: Fix the wave crest in the roof panel to the fixed middle bracket through buckles, then preliminarily fix the roof panel and the lightning protection metal sheet, and reserve a section of the metal sheet;

[0019] Step 4: Weld the roof panel and the lightning protection metal sheet, and then curl the edges after welding. Then, clamp the curled edges with a locking clamp, attach a section of the lightning protection metal sheet reserved on the outside of the locking clamp, and fix it with the locking clamp bolts.

[0020] Step 5: The photovoltaic panels are laid on the roof panels in sequence;

[0021] Step 6: Use the clamp bolt to fix the clamp on top of the locking clip.

[0022] The lightning protection bracket is provided with a metal edge bracket slot. In step 2, the lightning protection metal sheet is fixed in the metal edge bracket slot to be in contact with the metal edge.

[0023] In step 8, the clamp is fixed by adjusting the distance that the clamp bolts and nuts move up and down to adjust the tightness and fix the clamp, thereby fixing the photovoltaic panel.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This lightning protection structure can not only be installed on the original roof structure layer, but also does not need to destroy the waterproof layer. Only a small piece of metal sheet can improve the lightning protection performance of the photovoltaic roof and solve the influence of the roof panel surface coating on the conductive performance.

[0026] 2. In the future, replacement or disassembly will be more convenient, with less loss and material usage.

[0027] 3. During the installation process, the main body of the photovoltaic roof is similar to the original installation steps, except that the installation of the lightning protection device is added, and no additional operations are required. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the partial structure of the photovoltaic metal roof lightning protection system of the present invention.

[0029] Figure 2 It is a schematic diagram of the lightning protection device of the photovoltaic metal roof lightning protection system of the present invention.

[0030] Figure 3 This is a partial rendering of the photovoltaic metal roof lightning protection system of the present invention.

[0031] Figure 4 This is an overall effect diagram of the photovoltaic metal roof lightning protection system of the present invention.

[0032] Among them, the markings in the figure are: 1-lightning protection metal sheet; 2-lightning protection bracket; 3-roof panel; 4-photovoltaic panel; 5-locking clamp; 6-locking clamp bolt; 7-pressure block; 8-pressure block bolt; 9-lower steel structure. DETAILED DESCRIPTION

[0033] The structure and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] A photovoltaic metal roof lightning protection system, the photovoltaic metal roof comprises a roof panel, a photovoltaic panel, and a connector, wherein the roof panel is fixedly arranged on a lower rigid structure, the photovoltaic panels spliced ​​in sequence are fixedly arranged above the roof panel, a middle bracket is arranged between two adjacent roof panels, and the roof panel is fixed to the middle bracket through a connector, a fixed pressing block is arranged above the connector, and photovoltaic panels are laid on both sides; a lightning protection bracket is arranged between two adjacent roof panels, a lightning protection metal sheet with one end extending out of the roof panel is arranged on the lightning protection bracket, and the lightning protection bracket is fixedly connected to the steel structure below to form a conductive whole.

[0035] Specific embodiments, such as Figures 1 to 4 As shown,

[0036] The photovoltaic module lightning protection system structure of the present invention mainly includes a lightning protection metal sheet 1, a lightning protection bracket 2, a roof panel 3, a photovoltaic panel 4, a locking clamp 5, a locking clamp bolt 6, a pressing block 7, a pressing block bolt 8 and a lower steel structure 9. The lightning protection bracket 2 is connected to the lower steel structure 9, the roof panel 3 is placed on the lightning protection bracket 2, the locking clamp 5 and the lightning protection bracket 2 are connected through the lightning protection metal sheet 1, the locking clamp 5 is fixed by the locking clamp bolt 6, and the photovoltaic panel 4 is laid, and finally fixed by the upper pressing block 7 and the pressing block bolt 8.

[0037] The lightning protection metal sheet 1 is fixed at the connection between the roof panel 3 and the lightning protection bracket 2 to replace the original side bracket support structure, so as to achieve the lightning protection effect. The specific structural position and connection relationship are as follows:

[0038] The roof panel 3 is fixedly set on the lower steel structure 9, and the photovoltaic panels 4 spliced ​​in sequence are fixedly set above the roof panel 3. A middle bracket is set between two adjacent roof panels 3, and the roof panel is fixed on the middle bracket through a connecting piece. A fixed pressure block 7 is set above the connecting piece, and the photovoltaic panels 4 are laid on both sides; a lightning protection bracket 2 is set between two adjacent roof panels 3, and a lightning protection metal sheet 1 with one end extending out of the roof panel 3 is set on the lightning protection bracket 2. The lightning protection bracket 2 is fixedly connected to the lower steel structure 9 to form a conductive whole.

[0039] The connecting piece includes a locking clamp 5 and a locking bolt 6 . The locking clamp 5 clamps the edges of two adjacent roof panels 3 and is locked and fixed by the locking bolt 6 .

[0040] One end of the lightning protection metal sheet 1 is connected to the lightning protection bracket 2, and the other end passes through two adjacent roof panels 3, and a section is reserved to extend out of the roof panels 3, and the position connected with the roof panels 3 is fixed on the roof panels 3.

[0041] The roof panel 3 and the lightning protection metal sheet 1 are welded together. The roof panel 3 has a curled edge. The locking clamp 5 clamps the curled edge. A section of the lightning protection metal sheet 1 is reserved and attached to the outside of the locking clamp 5 and fixed by the locking clamp bolt 6.

[0042] The pressing block 7 is arranged above the locking clamp 5 and is fixed by a pressing block bolt 8 .

[0043] The locking clip 5 has a notch on its top, and the pressing block bolt 8 is inserted from the side of the notch.

[0044] The lightning protection bracket is a metal edge bracket structure with a slot at the upper end, and the lower end of the lightning protection metal sheet is fixed in the slot.

[0045] The construction method of the photovoltaic metal roof lightning protection system includes the following steps:

[0046] Step 1: Fix the lightning protection bracket and the middle bracket to the steel structure below;

[0047] Step 2: Fix the lower end of the lightning protection metal sheet on the lightning protection bracket;

[0048] Step 3: Fix the wave crest in the roof panel to the fixed middle bracket through buckles, then preliminarily fix the roof panel and the lightning protection metal sheet, and reserve a section of the metal sheet;

[0049] Step 4: Weld the roof panel and the lightning protection metal sheet, and then curl the edges after welding. Then, clamp the curled edges with a locking clamp, attach a section of the lightning protection metal sheet reserved on the outside of the locking clamp, and fix it with the locking clamp bolts.

[0050] Step 5: The photovoltaic panels are laid on the roof panels in sequence;

[0051] Step 6: Use the clamp bolt to fix the clamp on top of the locking clip. Specific embodiments

[0053] When the system is actually installed, the special metal side bracket and the middle bracket are normally fixed to the lower structure, and then the lower end of the lightning protection metal sheet is fixed in the slot of the special metal side bracket. Then, the middle wave peak of the roof panel is fixed to the fixed middle bracket through a buckle, and then the roof panel and the lightning protection metal sheet are simply fixed, and a section of the metal sheet is reserved, such as Figure 2 .

[0054] After the roof panels are completely laid, the roof panels and lightning protection metal sheets are welded, and then rolled. Then, the rolled edges are clamped with locking clips, and a section of the metal sheet reserved for the lightning protection metal sheet is attached to the outside of the locking clips. They are fixed with locking clip bolts; then the photovoltaic panels are laid on the roof panels.

[0055] Then the pressing block bolt is inserted from the side of the notch above the locking clamp, and the pressing block bolt fixes the pressing block above the locking clamp.

[0056] The bolts and nuts of the pressing block can be moved up and down to adjust the tightness to fix the pressing block, and the pressing block can adjust the tightness to fix the photovoltaic panel.

[0057] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0058] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0059] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0060] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] It should be understood that the present solution is not limited to the above-mentioned specific implementation methods, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present solution without departing from the scope of the technical solution of the present solution, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essential content of the present solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present solution without departing from the content of the technical solution of the present solution still falls within the scope of protection of the technical solution of the present solution.

Claims

1. A photovoltaic metal roof lightning protection system, the photovoltaic metal roof includes a roof panel, a photovoltaic panel, and a connector, wherein: The roof panel is fixedly arranged on the lower rigid structure, and the photovoltaic panels spliced ​​in sequence are fixedly arranged above the roof panel, a middle bracket is arranged between two adjacent roof panels, and the roof panel is fixed on the middle bracket through a connecting piece, a fixed pressing block is arranged above the connecting piece, and photovoltaic panels are laid on both sides; it is characterized in that: a lightning protection bracket is arranged between two adjacent roof panels, a lightning protection metal sheet with one end extending out of the roof panel is arranged on the lightning protection bracket, and the lightning protection bracket is fixedly connected to the steel structure below to form a conductive whole.

2. The photovoltaic metal roof lightning protection system according to claim 1, characterized in that: The connecting piece comprises a locking clamp and a locking bolt. The locking clamp clamps the edges of two adjacent roof panels and is locked and fixed by the locking bolt.

3. The photovoltaic metal roof lightning protection system according to claim 2 is characterized in that: One end of the lightning protection metal sheet is connected to the lightning protection bracket, and the other end passes through two adjacent roof panels, with a section reserved to extend out of the roof panels, and the position connected with the roof panels is fixed on the roof panels.

4. The photovoltaic metal roof lightning protection system according to claim 3 is characterized in that: The roof panel and the lightning protection metal sheet are welded and connected. The roof panel has a curled edge. The locking clamp clamps the curled edge. A section of the lightning protection metal sheet reserved is attached to the outer side of the locking clamp and fixed by locking clamp bolts.

5. The photovoltaic metal roof lightning protection system according to claim 4 is characterized in that: The pressing block is arranged above the locking clamp and is fixed by a pressing block bolt.

6. The photovoltaic metal roof lightning protection system according to claim 5, characterized in that: The top of the locking clip is provided with a notch, and the pressure block bolt is inserted from the side of the notch.

7. The photovoltaic metal roof lightning protection system according to claim 1, characterized in that: The lightning protection bracket is a metal edge bracket structure with a slot at the upper end, and the lower end of the lightning protection metal sheet is fixed in the slot.

8. The construction method of the photovoltaic metal roof lightning protection system is characterized by: The steps include: Step 1: Fix the lightning protection bracket and the middle bracket to the steel structure below; Step 2: Fix the lower end of the lightning protection metal sheet on the lightning protection bracket; Step 3: Fix the wave crest in the roof panel to the fixed middle bracket through buckles, then preliminarily fix the roof panel and the lightning protection metal sheet, and reserve a section of the metal sheet; Step 4: Weld the roof panel and the lightning protection metal sheet, and then curl the edges after welding. Then, clamp the curled edges with a locking clamp, attach a section of the lightning protection metal sheet reserved on the outside of the locking clamp, and fix it with the locking clamp bolts. Step 5: The photovoltaic panels are laid on the roof panels in sequence; Step 6: Use the clamp bolt to fix the clamp on top of the locking clip.

9. The construction method of the photovoltaic metal roof lightning protection system according to claim 8, characterized in that: The lightning protection bracket is provided with a metal edge bracket slot. In step 2, the lightning protection metal sheet is fixed in the metal edge bracket slot to be in contact with the metal edge.

10. The construction method of the photovoltaic metal roof lightning protection system according to claim 8, characterized in that: In step 8, the clamp is fixed by adjusting the distance that the clamp bolts and nuts move up and down to adjust the tightness and fix the clamp, thereby fixing the photovoltaic panel.

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