An arc-shaped roof photovoltaic installation system

Abstract

The present invention discloses an arc-shaped roof photovoltaic installation system. The photovoltaic panels are arranged along the ridge direction perpendicular to the arc-shaped roof panel. Along the ridge of the arc-shaped roof panel, support keels are also fixed. The support keels are arranged at intervals along the direction perpendicular to the ridge. A number of connecting seat plates I and connecting seat plates II are also arranged at intervals on the support keels. The connecting seat plate I is detachably and fixedly connected to the support keel. The connecting seat plate I and the connecting seat plate II are connected by a set screw connector. And the connecting seat plate II rotates within a set range along the arc direction of the arc-shaped roof panel with the set screw connector as the rotation axis. The upper end of the connecting seat plate II is adhesively fixed to the lower end face of the photovoltaic panel through structural adhesive. In the present invention, the support keels are arranged along the ridge direction of the arc-shaped roof panel, and then the photovoltaic panels are fixed to the connecting seat plate II, greatly increasing the laying area of the photovoltaic panels and the light energy conversion efficiency, and enabling crystalline silicon photovoltaic modules to cope with various special-shaped roofs and arc-shaped roofs.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic systems, and particularly to an arc-shaped roof photovoltaic installation system. Background Art

[0002] In recent years, due to the world energy crisis and the increasing energy consumption in China, solar photovoltaic new energy has developed by leaps and bounds. With China's commitment to the dual-carbon goal, more and more distributed photovoltaic projects are booming in the direction of newly built, expanded, and renovated factory building roofs.

[0003] Over time, there are various drawbacks in installing photovoltaic panels on the special-shaped roofs of newly built factories, old buildings, and arc-shaped building roofs. First, the solar brackets cannot adjust the angle for the arc-shaped roof surface, which is not conducive to wind resistance and cannot achieve the appearance effect. Second, the construction speed is slow, the construction period is long, and it is difficult to control the cost.

[0004] When installing a solar photovoltaic panel structure system, the component brackets and bracket keels of the photovoltaic panel system are important support structures for installing, bearing loads, and fixing photovoltaic components. Usually, the materials of the brackets and keels are aluminum alloy, carbon steel, and stainless steel. The solar photovoltaic brackets have an important impact on the safe and efficient operation of the photovoltaic system and project cost control.

[0005] At the same time, when the photovoltaic system is struck by lightning, without a reliable lightning protection system, it will cause the power generation power of the photovoltaic components to decrease or the inverter to malfunction, resulting in a reduction in the total power generation, a decline in economic benefits, an increase in the later equipment maintenance costs and the total project investment. Therefore, the rationality of lightning protection grounding must be noted in the photovoltaic system.

[0006] As is well known, during the installation of the photovoltaic system on arc-shaped structures, due to the lack of reliable and safe protection hard conditions, anti-fall measures (such as horizontal lifelines, etc.) must be installed on the arc top surface. At present, conventional lifeline products are all standard parts, and there are differences in the installation on some roofs. At that time, a unique anti-fall system for the roof needs to be used.

[0007] From a theoretical and practical perspective, when the incident angle of sunlight is perpendicular to the photovoltaic components, it is most conducive to the power generation of the photovoltaic components and the conversion efficiency is the highest. In the existing BAPV technology, bolts are mostly used to fix the photovoltaic components to the designated positions. This assembly method requires the photovoltaic components to be provided with frames and the brackets to be set throughout the length. The set brackets require angles, which have certain limitations. For the optimal incident angle of the arc-shaped roof, the flat brackets cannot adjust the angle, which will limit the power generation efficiency of the photovoltaic panels and thus cannot meet the requirements. In addition, repeatedly adding keels is very uneconomical. Although using thin-film photovoltaic components can achieve an arc-shaped effect, the cost is much higher.

[0008] Distributed rooftop photovoltaic power stations are currently widely used. Conventional rooftops are mostly regular planar geometric shapes, and the construction of photovoltaic panel components is relatively easy. However, for curved building rooftops such as the rooftops of power plant coal sheds and the rooftops of public buildings with typical curved shapes, due to various angles, it is impossible for planar photovoltaic panels to adapt to the changes in curvature during installation, making it difficult to achieve standardized installation construction, and the construction difficulty is very high. In the existing technology, cadmium telluride thin-film power generation is mostly used, which greatly increases the cost. Moreover, the components of ordinary BAPV systems need to be provided with aluminum alloy frames, which have a heavy load, are prone to dust accumulation to form hot spots, have a low fire resistance rating of materials, and a slow installation speed, making it difficult to achieve a full layout of photovoltaic panels and other technical problems. Summary of the Invention

[0009] In view of the deficiencies of the existing technology, the present invention provides an arc-shaped rooftop photovoltaic installation system for arc-shaped and slightly curved rooftops, which can achieve the effects of rapid construction, reduced construction period, safety and reliability, and economy and applicability.

[0010] The present invention adopts the following technical solutions:

[0011] An arc-shaped rooftop photovoltaic installation system includes an arc-shaped roof panel connected to purlins and a photovoltaic panel disposed above the arc-shaped roof panel. The photovoltaic panel is arranged along the direction perpendicular to the convex edge of the arc-shaped roof panel. Along the convex edge of the arc-shaped roof panel, a support keel is also fixed. The support keels are arranged at intervals along the length direction of the photovoltaic panel. A number of connecting seat plates I and connecting seat plates II are also arranged at intervals on each support keel. The connecting seat plate I is detachably and fixedly connected to the support keel. The connecting seat plate I and the connecting seat plate II are connected by a set screw connector. And the connecting seat plate II rotates within a set range along the arc direction of the arc-shaped roof panel with the set screw connector as a rotation axis. The upper end of the connecting seat plate II is adhesively fixed to the lower end surface of the photovoltaic panel through structural glue; the entire photovoltaic panel is supported by multiple rows of the connecting seat plates II below it, and adaptively adjusts the relative rotation angle between the connecting seat plate I and the connecting seat plate II below it according to the curvature of the arc-shaped roof panel at the installation position of each photovoltaic panel.

[0012] Preferably, at least two sets of connecting structures composed of the connecting seat plate I and the connecting seat plate II are installed on each photovoltaic panel in its width direction.

[0013] Further preferably, both the connecting seat plate I and the connecting seat plate II are L-shaped stainless steel plates. Corresponding connecting holes are provided on the connecting plate surfaces of the connecting seat plate I and the connecting seat plate II. The connecting hole on the connecting seat plate I is a horizontally elongated circular hole, and the connecting hole on the connecting seat plate II is a vertically elongated circular hole. The two are fixedly connected through the set screw connector. By adjusting the position of the set screw connector in the horizontally elongated circular hole and the vertically elongated circular hole, the photovoltaic panel can be adaptively installed on the arc-shaped roof panel.

[0014] Furthermore, an anti-falling device is also installed on the arc-shaped roof panel. It is arranged along the length direction of the photovoltaic panel and includes a plurality of anti-falling fixing seats. The anti-falling fixing seats are fixed on the arc-shaped roof panel or the support keel. A vertical support frame I is vertically fixed on each anti-falling fixing seat. The vertical support frames I are connected by two horizontally arranged cross support rods in parallel. Anti-falling sliders are provided on the two cross support rods between the two vertical support frames I.

[0015] Preferably, the anti-falling device is arranged in the gap formed by two adjacent photovoltaic panels.

[0016] Even further, a lightning protection device is also installed on the arc-shaped roof panel. It is arranged along the length direction of the photovoltaic panel and includes a lightning protection wire and a plurality of lightning protection fixing seats. The lightning protection fixing seats are fixed on the arc-shaped roof panel or the support keel. A vertical support frame II is vertically fixed on each lightning protection fixing seat. The lightning protection wire is detachably fixedly connected to the upper ends of the vertical support frames II.

[0017] Preferably, the lightning protection device is arranged in the gap formed by two adjacent photovoltaic panels.

[0018] The photovoltaic panel is a frameless photovoltaic panel.

[0019] The technical solution of the present invention has the following advantages:

[0020] A. Through the support keel, the connecting seat plate I and the connecting seat plate II of the present invention, the support keel is fixed along the convex edge of the arc-shaped roof panel. The connecting seat plate I and the connecting seat plate II are fixed through the fastening connector and can relatively rotate at a certain angle along the circular arc direction of the arc-shaped roof panel. Then the photovoltaic panel is fixed to the connecting seat plate II, and the two are fixedly connected by glue, which can greatly increase the laying area of the photovoltaic panel and the conversion efficiency of light energy, and can enable crystalline silicon photovoltaic modules to cope with photovoltaic projects on various special-shaped roofs and arc-shaped roofs.

[0021] B. Through the present invention, the modularization and industrialization of components and processes can be realized, and rapid installation can be achieved on site, shortening the project duration and saving costs.

[0022] C. By adopting a convenient lightning protection wire and a fall prevention device, the present invention can speed up construction, facilitate later maintenance, and greatly save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for the specific embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 3D drawing of the rapid installation photovoltaic panel structure provided by the present invention;

[0025] Figure 2 Detail enlarged drawing of the connection structure provided by the present invention;

[0026] Figure 3 3D drawing of the fall prevention device structure provided by the present invention;

[0027] Figure 4 Structure diagram of the lightning protection device provided by the present invention.

[0028] 1 - purlin; 2 - arc-shaped roof panel, 21 - convex rib; 3 - photovoltaic panel; 4 - support keel

[0029] 5 - connecting seat plate I

[0030] 51 - horizontal oblong hole

[0031] 6 - connecting seat plate II

[0032] 7 - set screw connector; 8 - structural adhesive;

[0033] 9 - fall prevention device

[0034] 91 - fall prevention fixing seat, 92 - vertical support frame I

[0035] 93 - horizontal support rod, 94 - fall prevention slider

[0036] 10 - lightning protection device

[0037] 101 - lightning protection wire, 102 - lightning protection fixing seat, 103 - vertical support frame II. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The present invention provides an arc-shaped roof photovoltaic installation system, including an arc-shaped roof panel 2 connected to a purlin 1 and a photovoltaic panel 3 arranged above the arc-shaped roof panel 2. The photovoltaic panel 3 is arranged along the direction perpendicular to the convex edge 21 of the arc-shaped roof panel 2. A support keel 4 is also fixed along the convex edge 21 of the arc-shaped roof panel 2. The support keel 4 is arranged at intervals along the direction perpendicular to the convex edge 21. A plurality of connecting seat plates I5 and connecting seat plates II6 are also arranged at intervals on the support keel 4. The connecting seat plate I5 is connected to the support keel 4 by bolts. The connecting seat plate I5 is connected to the connecting seat plate II6 by a set screw connector 7. And the connecting seat plate II6 rotates within a set range along the arc direction of the arc-shaped roof panel 2 with the set screw connector 7 as the rotation axis. The upper end surface of the connecting seat plate II6 is coated with a structural adhesive 8, and the two are adhesively fixed to the lower end surface of the photovoltaic panel 3 through the structural adhesive 8. The connection structure formed by the connecting seat plate I5 and the connecting seat plate II6 is as Figure 2As shown in the figure. Both the connecting seat plate I5 and the connecting seat plate II6 are L-shaped stainless steel plates. Corresponding connecting holes are provided on the connecting plate surfaces of the connecting seat plate I5 and the connecting seat plate II6. The connecting hole on the connecting seat plate I5 is a horizontal oblong hole 51, and the connecting hole on the connecting seat plate II6 is a vertical oblong hole (not shown in the figure). They are fixedly connected by a set screw connector 7 (preferably a set screw). Both the connecting seat plate I5 and the connecting seat plate II6 are made of stainless steel, with a thickness of 3 mm stainless steel products, and are prefabricated into standard parts in the factory to ensure anti-corrosion and the stability of the skeleton under the condition of being exposed outdoors. The oblong hole form is adopted between the connecting seat plate I5 and the connecting seat plate II6, and the oblong holes on them are arranged in a vertical cross shape, which can realize the rotation function of fine adjustment of 15 ± 1°. At the same time, the width of the connecting seat plate II6 is preferably 80 mm and the height is 100 mm, which can provide enough space for the curved roof panel 2 and the photovoltaic panel 3 to ensure the heat dissipation effect on the back side of the component and the placement of the junction box.

[0042] As shown by Figure 1 the figure, the photovoltaic panel adopted in the present invention is a frameless photovoltaic panel structure. On the same support keel 4 in the width direction of each photovoltaic panel 3, at least two sets of connecting structures composed of the connecting seat plate I5 and the connecting seat plate II6 are installed. The Figure 1 present invention provides two sets of connecting structures for the photovoltaic panel 3 on the same support keel 4. Of course, more sets of connecting structures can also be set to provide its support strength, which will not be specifically described here.

[0043] The size of the frameless photovoltaic panel is preferably 2 mm + 1 mm + 2 m in thickness, and the width and length are according to the size of the double-layer tempered glass sandwiching the battery silicon wafer designed. The tempered glass reaches the strength grade of the building curtain wall, and both lightning protection and hail protection can meet the specified requirements; the frameless photovoltaic module reduces the roof load with lightweight, reduces the steel consumption for the structure, and indirectly reduces the cost; the photovoltaic panel module can use economic crystalline silicon type modules and is prefabricated into finished products in the factory.

[0044] The adopted support keel is preferably cold-formed from Q355B high-strength carbon steel plate. The width of the channel-shaped keel is customized according to the roof panel type to ensure sufficient strength to support the photovoltaic module system.

[0045] Of course, in order to prevent people from falling in the present invention, as Figure 3As shown in the figure, a fall prevention device 9 is also installed on the arc-shaped roof panel 2. It is arranged along the length direction of the photovoltaic panel 3 and includes a plurality of fall prevention fixing seats 91. The fall prevention fixing seats 91 are fixed on the arc-shaped roof panel 2 or the support keel 4. A vertical support frame I92 is vertically fixed on each fall prevention fixing seat 91. The support frames I92 are connected by two horizontally supporting rods 93 arranged in parallel. Fall prevention sliders 94 are provided on the two horizontally supporting rods 93 between the two support frames I92. Preferably, the fall prevention device 9 is arranged at the gap position formed between two photovoltaic panels 3. For the fall prevention device 9 adopted in the present invention, when installing the roof photovoltaic panel 3, the fall prevention device 9 is set up, and the lifeline is reliably connected according to the design requirements through the fall prevention fixing seat 91. After the construction is completed, the fall prevention device 9 is retained as the lifeline for the later roof operation and maintenance.

[0046] In addition, a lightning protection device 10 is also installed on the arc-shaped roof panel 2, as Figure 4 shown. It is arranged along the length direction of the photovoltaic panel 3 and includes a lightning protection wire 101 and a plurality of lightning protection fixing seats 102. The lightning protection fixing seats 102 are fixed on the arc-shaped roof panel 2 or the support keel 4. A vertical support frame II103 is vertically fixed on each lightning protection fixing seat 102. The lightning protection wire 101 is detachably and fixedly connected to the upper ends of the support frames II103. In the present invention, the lightning protection wire 101 is connected in series according to the design requirements through the lightning protection fixing seats 102. The lightning protection fixing seats 102 are connected to the support keel 4 through fasteners and are connected to the reserved lightning protection device 10 on the steel beam through copper stranded wires, so as to avoid the harm of lightning strikes to the photovoltaic system.

[0047] In the present invention, the connecting seat plate I5 and the connecting seat plate II6 are respectively assembled into prefabricated components in the factory. Silicone structural adhesive is filled on the connecting seat plate II6 through force calculation to fix the connecting seat plate II6 on the photovoltaic panel 3 assembly; in order to enable the connecting seat plate II6 and the frameless photovoltaic module to fully and reliably support and bear force together, a sufficient number of fixing brackets are set through calculation.

[0048] First, install the support keel 4 on the arc-shaped roof panel 2, and fix the channel-shaped keel on the original roof purlin on the original roof. Secondly, install the fall prevention device 9 at the designed position of the arc top, and fix the fall prevention fixing seat 91 to the support keel 4 through stainless steel bolts, with the fixing points spaced no more than 6m to ensure the reliable and stable force of the lifeline. Then, the prefabricated connecting seat plate I5 in the factory is measured, lofted, positioned and installed on the support keel 4 on site. Finally, at the construction site, the combination of the frameless photovoltaic panel 3 and the connecting seat plate II6 is fixed to the connecting seat plate I5 through M8 stainless steel bolts, and the upper and lower parts are firmly fixed. The long round holes of the fastening bolts can realize a 10° arc adjustment to fix the frameless photovoltaic panel 3 on the arc top.

[0049] A lightning protection device 10 is provided on the roof. The lightning protection fixing seats 102 are fixedly installed on the support keel 4 at intervals of 2 m. Fixing holes are reserved on the lightning protection fixing seats 102, and the lightning protection wires 101 are connected in series according to the lightning protection requirements. The lightning protection fixing seats 102 are connected to the support keel 4 through fasteners, connected to the reserved lightning protection device 10 on the steel beam through copper stranded wires, and introduced into the ground through the main structure.

[0050] The parts not described in the present invention are applicable to the prior art.

[0051] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An arc-shaped roof photovoltaic installation system, comprising an arc-shaped roof panel (2) connected to purlins (1) and a photovoltaic panel (3) arranged above the arc-shaped roof panel (2), wherein the photovoltaic panel (3) is arranged along the direction perpendicular to the convex rib (21) of the arc-shaped roof panel (2), and is characterized in that, A support keel (4) is also fixed along the convex rib (21) of the arc-shaped roof panel (2). A plurality of the support keels (4) are arranged at intervals in the length direction of the photovoltaic panel (3). A plurality of connecting seat plates I (5) and connecting seat plates II (6) are also arranged at intervals on each of the support keels (4). The connecting seat plate I (5) is detachably and fixedly connected to the support keel (4). The connecting seat plate I (5) and the connecting seat plate II (6) are connected by a set screw connector (7). And the connecting seat plate II (6) rotates within a set range along the arc direction of the arc-shaped roof panel (2) with the set screw connector (7) as a rotation axis. The upper end of the connecting seat plate II (6) is adhesively fixed to the lower end face of the photovoltaic panel (3) through a structural adhesive (8). The whole photovoltaic panel (3) is supported by multiple rows of the connecting seat plates II (6) below it, and adaptively adjusts the relative rotation angle between the connecting seat plate I (5) and the connecting seat plate II (6) below it according to the radian of the arc-shaped roof panel (2) at the installation position of each photovoltaic panel (3). Both the connecting seat plate I (5) and the connecting seat plate II (6) are L-shaped stainless steel plates. Corresponding connecting holes are provided on the connecting plate surfaces of the connecting seat plate I (5) and the connecting seat plate II (6). The connecting hole on the connecting seat plate I (5) is a horizontally elongated circular hole (51), and the connecting hole on the connecting seat plate II (6) is a vertically elongated circular hole. The two are fixedly connected through the set screw connector (7). By adjusting the position of the set screw connector (7) in the horizontally elongated circular hole (51) and the vertically elongated circular hole, the photovoltaic panel (3) is adaptively installed on the arc-shaped roof panel (2). At least two sets of connecting structures composed of the connecting seat plate I (5) and the connecting seat plate II (6) are installed on each photovoltaic panel (3) in its width direction. A lightning protection device (10) is also installed on the arc-shaped roof panel (2). It is arranged along the length direction of the photovoltaic panel (3), and includes a lightning protection wire (101) and a plurality of lightning protection fixing seats (102). The lightning protection fixing seats (102) are fixed on the arc-shaped roof panel (2) or the support keel (4). A vertical support frame II (103) is vertically fixed on each of the lightning protection fixing seats (102). The lightning protection wire (101) is detachably and fixedly connected to the upper ends of the vertical support frames II (103).

2. The arc-shaped roof photovoltaic installation system according to claim 1, characterized in that, A fall prevention device (9) is also installed on the arc-shaped roof panel (2). It is arranged along the length direction of the photovoltaic panel (3), and includes a plurality of fall prevention fixing seats (91). The fall prevention fixing seats (91) are fixed on the arc-shaped roof panel (2) or the support keel (4). A vertical support frame I (92) is vertically fixed on each of the fall prevention fixing seats (91). The vertical support frames I (92) are connected by two horizontally arranged cross support rods (93) in parallel. Fall prevention sliders (94) are provided on the two cross support rods (93) between the two vertical support frames I (92).

3. The arc-shaped roof photovoltaic installation system according to claim 2, wherein The anti-falling device (9) is arranged in the gap formed by two adjacent photovoltaic panels (3).

4. The arc-shaped roof photovoltaic installation system according to claim 3, characterized in that, The lightning protection device (10) is arranged in the gap formed by two adjacent photovoltaic panels (3).

5. The arc-shaped roof photovoltaic installation system according to claim 1, wherein, The photovoltaic panel (3) is a frameless photovoltaic panel.

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