A kind of metal roof with fixture and its installation BIPV system

Abstract

The utility model discloses a kind of existing metal roof additional fixed parts and additional BIPV system thereof, additional fixed part is the keel structure with hollow cavity being arranged along the length direction of lock seam of metal roof, upper and lower ends are respectively provided with upper support plane and lower support plane, lower support plane is equipped with the opening being set through length, the height of hollow cavity of additional fixed part is greater than the height of lock seam, the width of opening is greater than the width size of lock seam, the width of lower support plane of additional fixed part is compatible with the width of roof rib edge support plane on both sides of lock seam of metal roof;Lock seam of metal roof is extended to the hollow cavity of additional fixed part by the opening of additional fixed part, additional fixed part is fixed on roof rib edge support plane, and the upper support plane of additional fixed part and the lower end surface of photovoltaic module are fixed by structure glue bonding. The utility model can be quickly installed on existing metal roof, match various types metal roof panel type, assembly installation step is simple, can greatly improve installation efficiency and paving area.

Description

Technical Field

[0001] This utility model relates to the field of building-integrated photovoltaics (BIPV) technology, and more specifically, to an existing metal roof mounting fastener and its BIPV system, applicable to metal roofs that are 3-5 years old and in good structural condition, and also applicable to newly built metal roofs. Background Technology

[0002] Traditional BAPV systems require a maintenance access channel with a width of ≥0.5m, resulting in a roof occupancy rate of generally ≤70%, thus limiting installed capacity. The frame height of framed modules (usually 5-10mm) forms a dust accumulation groove. Actual measurements show that the hot spot effect in the dust accumulation area of ​​the frame can increase the local temperature of the module by 15-20℃, reduce power generation efficiency by 8%-12%, and result in an average annual power generation loss of more than 5%, leading to low installation efficiency and power generation performance.

[0003] Traditional BAPV systems employ a "clamp + guide rail + pressure block" connection system, resulting in 4-5 structural layers (roof panel → clamp → guide rail → pressure block → component). This leads to complex nodes and multiple mechanical connection failure risks. Wind uplift resistance, calculated according to the "Code for Design of Building Structures," shows a wind pressure resistance of ≤-3.5 kPa for traditional systems. In typhoon-prone areas (basic wind pressure ≥0.6 kPa), there is a risk of overturning, indicating insufficient structural reliability.

[0004] Traditional BAPV systems use framed components with a load-bearing capacity of ≤1.0kPa, which cannot meet the needs of operation and maintenance. The keel is mostly made of ordinary hot-dip galvanized steel (coating thickness ≤40μm), with an annual corrosion rate of 5-10μm / year. It needs to be replaced regularly every 5-10 years. The total life cycle maintenance cost accounts for 20%-25% of the total investment of the system, resulting in bottlenecks in operation and maintenance and durability.

[0005] Traditional BIPV technology requires adding a layer of metal roof panels and photovoltaic modules to form a BIPV system in order to have the dual attributes of building photovoltaics, namely waterproofing and power generation. For metal roofs that have been built for 3 to 5 years, the remaining service life can reach 15 to 20 years. Replacing or adding a layer of metal roof panels would result in a great waste of the original roof and low economic performance.

[0006] BIPV photovoltaic modules and metal roof panels are compatible products. When the metal panel type is not compatible, it cannot be installed or a conversion layer is required for installation, resulting in poor compatibility. Utility Model Content

[0007] To address the aforementioned technical problems in the existing technology, this utility model provides a fastener for adding a BIPV system to an existing metal roof. It can be quickly installed on an existing metal roof, is compatible with various types of metal roof panels, has simple assembly and installation steps, greatly improves installation efficiency, allows people to walk on the photovoltaic modules, reduces or eliminates maintenance walkways, and significantly increases the paved area.

[0008] The present invention adopts the following technical solution:

[0009] On one hand, this utility model provides an additional fastener for an existing metal roof. The fastener is a keel structure with a hollow cavity arranged along the length of the lock seam of the metal roof. An upper support plane and a lower support plane are respectively provided at its upper and lower ends. An opening is provided on the lower support plane. The height of the hollow cavity of the fastener is greater than the height of the lock seam of the metal roof, and the width of the opening is greater than the width of the lock seam of the metal roof. The width of the lower support plane of the fastener is adapted to the width of the roof rib support plane on both sides of the lock seam of the metal roof.

[0010] Furthermore, one and / or both sides of the added fastener form a concave reinforcing rib.

[0011] Furthermore, the concave portion of the reinforcing rib forms a concave plane, and a plurality of bolt holes are provided on one side of the concave plane at intervals along its length. The upper edge of the bolt holes is lower than the lower edge of the lock seam of the metal roof.

[0012] Preferably, the lower opening of the mounting hardware divides its lower support plane into a first lower support plane and a second lower support plane, the first lower support plane and the bolt hole are located on the same side of the opening, and the width of the first lower support plane is smaller than the width of the second lower support plane.

[0013] Preferably, the width of the second lower support plane is half the total width of the lower support plane of the mounting hardware, and the edges of the first lower support plane and the second lower support plane form an upward folded edge.

[0014] Furthermore, structural adhesive is adhered to the upper support plane of the added fastener.

[0015] Preferably, the mounting hardware is formed by pressing and rolling a steel plate made of zinc-aluminum-magnesium or aluminum alloy using a forming equipment.

[0016] On the other hand, this utility model also provides a BIPV system for adding to an existing metal roof. The BIPV system includes a metal roof, photovoltaic modules, mounting bases, and roof purlins. The mounting bases are fixedly connected to the roof purlins. The roof rib support planes of two adjacent metal roofs overlap the mounting bases, and the roof ribs of two adjacent metal roofs are locked together by a locking tool to form a locking seam. The BIPV system also includes the aforementioned mounting hardware. The locking seam extends from the opening of the mounting hardware to the hollow cavity of the mounting hardware. The mounting hardware is fixed to the roof rib support planes, and the upper support plane of the mounting hardware is bonded to the lower end face of the photovoltaic modules with structural adhesive.

[0017] Preferably, the photovoltaic module is a frameless photovoltaic module, and the lower support plane of the mounting fastener is bonded and fixed to the roof rib support plane by structural adhesive.

[0018] Alternatively, preferably, the photovoltaic module is a frameless photovoltaic module, and the bolt hole of the mounting hardware is provided with a bolt. When the end of the bolt abuts against the facade of one side of the lock seam, and the opening side of the mounting hardware abuts against the facade of the other side of the lock seam, the mounting hardware and the lock seam are clamped and fixed together.

[0019] Compared with traditional technologies, this utility model has the following technical advantages and application effects:

[0020] A. This utility model only requires two steps: fixing with fasteners and installing photovoltaic modules. The construction is simple and convenient, requiring only 2 to 3 people. Compared with traditional BIPV products, it can save more than 50% of the manpower. At the same time, the prefabricated installation efficiency can be increased by 30% to 40%, which is a significant improvement in installation efficiency.

[0021] B. This utility model adopts frameless, step-on photovoltaic modules, eliminating the need for maintenance channels, increasing installed capacity by 30-50%, and reducing hot spot risk by 90% with the frameless design. Actual measurements show that the average annual power generation is 10-15% higher than that of BAPV systems, and the power generation efficiency is significantly improved.

[0022] C. This utility model combines the added firmware with photovoltaic modules to form a BIPV product, which features a maintenance-free design throughout its entire life cycle, reducing operation and maintenance costs by 25% and maximizing the optimization of the total life cycle cost.

[0023] D. This utility model utilizes the strong compatibility of the added fasteners, which can be adapted to different types of metal roofs, such as aluminum-magnesium-manganese panels, aluminized zinc steel panels, zinc-aluminum-magnesium steel panels, and painted steel panels, etc., and the interlocking method of the panels is not limited, and they can all be perfectly matched, with a wide range of applications. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the mounting hardware structure provided by this utility model;

[0026] Figure 2 This is a cross-sectional view of the BIPV system provided by this utility model;

[0027] Figure 3 This is the connection detail drawing I provided by this utility model;

[0028] Figure 4 This is a cross-sectional view of the structure provided by this utility model;

[0029] Figure 5 This is a partial three-dimensional schematic diagram I provided by this utility model;

[0030] Figure 6 This is the connection detail drawing II provided by this utility model;

[0031] Figure 7 This is a partial three-dimensional schematic diagram II provided by this utility model;

[0032] Figure 8 This is the overall system installation diagram provided by this utility model.

[0033] The diagram is labeled as follows:

[0034] 1- Add firmware

[0035] 11-Upper Support Plane

[0036] 12-Lower support plane, 12a-Opening

[0037] 121 - First lower support plane, 122 - Second lower support plane

[0038] 13-Reinforcing Rib Plate

[0039] 13a - Concave plane, 13b - Bolt hole

[0040] 14-Folded edge

[0041] 2-Metal Roofing

[0042] 21-Seam, 22-Roof rib support plane

[0043] 3-Structural adhesive; 4-Photovoltaic module; 5-Fixing bracket; 6-Roof purlin; 7-Bolt. Detailed Implementation

[0044] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] like Figures 1 to 8 As shown, this utility model provides an additional mounting component for an existing metal roof. The mounting component 1 is a keel structure with a hollow cavity, arranged along the length of the seam 21 of the metal roof 2. It has an upper support plane 11 and a lower support plane 12 at its upper and lower ends, respectively. The lower support plane 12 has a continuous opening 12a. The height of the hollow cavity of the mounting component 1 is greater than the height of the seam 21 of the metal roof 2, and the width of the opening 12a is greater than the width of the seam 21 of the metal roof 2. The width of the lower support plane 12 of the mounting component 1 matches the width of the roof rib support planes 22 on both sides of the seam 21 of the metal roof 2. The width of the opening 12a being greater than the width of the seam 21 of the metal roof 2, and the height of the hollow cavity being greater than the height of the seam 21, allows the seam 21 to be smoothly inserted into the hollow cavity of the mounting component 1.

[0048] As a further preferred embodiment of this utility model, concave reinforcing ribs 13 are formed on one and / or both sides of the mounting fastener 1. The mounting fastener 1 adopts an irregular cross-section design, with reinforcing ribs 13 respectively provided on the two vertical sides, which enhances its cross-sectional characteristics and can effectively reduce the thickness of the mounting fastener 1. The mounting fastener 1 can be made of zinc-aluminum-magnesium steel material by rolling through forming equipment, with a general forming thickness of 1.0 to 2.0 mm. Alternatively, it can be made of aluminum alloy material by extrusion forming, which has the advantages of high strength, light weight, and good durability.

[0049] The aforementioned mounting bracket 1 is suitable when the existing metal roof panel surface meets the bonding requirements. The upper support plane 11 and lower support plane 12 of the mounting bracket are bonded and fixed to the photovoltaic module 4 and the roof rib support plane 22 respectively using special structural adhesive 3, making installation more convenient. Of course, the number of mounting brackets 1 can be set according to different project regions and project requirements. The mounting bracket 1 can be set along the short side of the photovoltaic module 4 or along the long side of the photovoltaic module 4.

[0050] When the existing metal roof panel surface does not meet the bonding requirements, such as when the metal roof surface coating and structural adhesive cannot form adhesion, or when the metal roof paint layer is powdery or cracked, mechanical connection can be used. This invention forms a concave plane 13a in the recessed part of the reinforcing rib 13. Several bolt holes 13b are provided at intervals along the length of the concave plane 13a on one side. The upper edge of the bolt holes 13b is lower than the lower edge of the widest part of the locking seam 21 of the metal roof 2. This design improves the wind resistance of the added fastener and prevents the added fastener 1 from falling off the locking seam. In use, simply fit the added fastener 1 into the locking seam position, and then tighten it with bolts 7 at the bolt holes 13b. Tightening the bolts 7 establishes a fixed connection between the added fastener 1 and the locking seam 21.

[0051] Furthermore, the lower opening 12a of the mounting hardware 1 divides its lower support plane 12 into a first lower support plane 121 and a second lower support plane 122. The first lower support plane 121 and the bolt hole 13b are located on the same side of the opening 12a, and the width of the first lower support plane 121 is smaller than the width of the second lower support plane 122. More preferably, the width of the second lower support plane 122 is preferably half the total width of the lower support plane 12 of the mounting hardware 1. After the mounting hardware 1 is fixedly connected to the lock seam 21, both sides of the mounting hardware 1 are flush with the outer side of the roof rib support plane 22. The edges of the first lower support plane 121 and the second lower support plane 122 preferably form upward folded edges 14 to further enhance the strength of the mounting hardware 1.

[0052] This utility model also provides a BIPV system for adding to existing metal roofs, such as Figures 6 to 8 As shown, the BIPV system includes a metal roof 2, photovoltaic modules 4, mounting bases 5, and roof purlins 6. The mounting bases 5 are fixedly connected to the roof purlins 6. The roof rib support planes 22 of two adjacent metal roofs 2 overlap on the mounting bases 5, and the roof ribs of the two adjacent metal roofs 2 are locked together by a locking tool to form a locking seam 21. The locking seam 21 extends from the opening 12a of the mounting fastener 1 to the hollow cavity of the mounting fastener 1. The mounting fastener 1 is fixed on the roof rib support planes 22. The upper support plane 11 of the mounting fastener 1 is bonded and fixed to the lower end face of the photovoltaic module 4 by structural adhesive 3.

[0053] When the metal roof 2 is not suitable for bonding and fixing to the lower end face of the mounting bracket 1, the mounting bracket 1 used can be... Figure 6 and Figure 7 As shown in the structure, the bolt 7 can pass through the bolt hole 13b opened on the side of the mounting component 1. When the right leg of the mounting component 1 contacts the right facade of the metal roof lock seam 21, the bolt 7 is further tightened inward. When the bolt 7 contacts the left support facade of the lock seam 21, the bolt 7 and the right leg of the mounting component 1 form a clamping effect, which can fasten the mounting component 1 to the lock seam 21 of the metal roof 2. At the same time, since the seam opening of the lock seam 21 is slightly wider than the bottom support facade of the panel, it can effectively prevent the bolt 7 from moving upward, thereby preventing the mounting component 1 from separating from the metal roof panel from the top.

[0054] When the metal roof 2 is suitable for adhesive fixing, such as Figure 4 As shown, structural adhesive 3 can be applied to the roof rib support plane 22 of the metal roof 2 and the upper support plane 11 of the mounting hardware 1 respectively, and the lower support plane 12 of the mounting hardware 1 can be directly bonded and fixed to the roof rib support plane 22, and the lower end face of the photovoltaic module 4 can be bonded and fixed to the upper support plane 11 of the mounting hardware 1.

[0055] like Figure 3 As shown, the newly added mounting hardware 1 is a continuous installation with an open bottom and closed on the other three sides. It is positioned directly above the lock seam 21 of the metal roof panel, covering the lock seam 21 of the metal roof panel. This effectively prevents rainwater from entering and improves the waterproof performance of the metal roof panel.

[0056] As attached Figure 8 As shown, the mounting hardware 1 can be installed at each lock seam 21 as needed, or it can be installed every other lock seam 21. Of course, the effects achieved are different. If economy and low load are desired, the mounting hardware 1 can be installed every other lock seam 21. When applied to high wind pressure areas, the mounting hardware 1 can be installed at each lock seam 21, thereby ensuring that the application scope of this utility model is wider and the versatility is stronger.

[0057] The application scope of this utility model can also be extended to the installation of BIPV on concrete roofs. After the mounting fastener 1 is effectively fixed to the concrete roof through the connector, the photovoltaic module 4 can be installed on the upper part in the same way.

[0058] This utility model only requires two steps: fixing with fastener 1 and installing photovoltaic module 4. The construction is simple and convenient, requiring only 2 to 3 people. Compared with traditional BIPV products, it can save more than 50% of the manpower. At the same time, the prefabricated installation efficiency can be improved by 30% to 40%, and the installation efficiency is significantly improved.

[0059] Any aspects not described herein are applicable to the prior art.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A fastener for adding to existing metal roofs, characterized in that, The mounting hardware (1) is a hollow keel structure arranged along the length of the lock seam (21) of the metal roof (2). It has an upper support plane (11) and a lower support plane (12) at its upper and lower ends, respectively. The lower support plane (12) has a continuous opening (12a). The height of the hollow cavity of the mounting hardware (1) is greater than the height of the lock seam (21) of the metal roof (2). The width of the opening (12a) is greater than the width of the lock seam (21) of the metal roof (2). The width of the lower support plane (12) of the mounting hardware (1) is adapted to the width of the roof rib support plane (22) on both sides of the lock seam (21) of the metal roof (2).

2. The fastener for adding to existing metal roofs according to claim 1, characterized in that, The mounting fastener (1) forms a concave reinforcing rib (13) on one and / or both sides.

3. The fastener for adding to existing metal roofs according to claim 2, characterized in that, The inner recess of the reinforcing rib (13) forms a concave plane (13a), and a plurality of bolt holes (13b) are provided on one side of the concave plane (13a) at intervals along its length. The upper edge of the bolt holes (13b) is lower than the lower edge of the lock seam (21) of the metal roof (2).

4. The fastener for adding to existing metal roofs according to claim 3, characterized in that, The lower opening (12a) of the mounting hardware (1) divides its lower support plane (12) into a first lower support plane (121) and a second lower support plane (122). The first lower support plane (121) and the bolt hole (13b) are located on the same side of the opening (12a). The width of the first lower support plane (121) is smaller than the width of the second lower support plane (122).

5. The fastener for adding to existing metal roofs according to claim 4, characterized in that, The width of the second lower support plane (122) is half the total width of the lower support plane (12) of the mounting hardware (1), and the edges of the first lower support plane (121) and the second lower support plane (122) form an upward folded edge (14).

6. The existing metal roof mounting hardware according to any one of claims 1-5, characterized in that, Structural adhesive (3) is pasted on the upper support plane (11) of the mounting hardware (1).

7. The fastener for adding to existing metal roofs according to claim 6, characterized in that, The mounting hardware (1) is a steel plate made of zinc-aluminum-magnesium or aluminum alloy, which is formed by pressing and rolling using a forming equipment.

8. A BIPV system for adding a BIPV to an existing metal roof, the BIPV system comprising a metal roof (2), photovoltaic modules (4), mounting bases (5), and roof purlins (6), wherein the mounting bases (5) are fixedly connected to the roof purlins (6), the roof rib support planes (22) of two adjacent metal roofs (2) overlap the mounting bases (5), and the roof ribs of two adjacent metal roofs (2) are locked together by a locking tool to form a locking seam (21), characterized in that, The BIPV system further includes a mounting bracket (1) as described in any one of claims 1-7, wherein the locking seam (21) extends from the opening (12a) of the mounting bracket (1) into the hollow cavity of the mounting bracket (1), the mounting bracket (1) is fixed on the roof rib support plane (22), and the upper support plane (11) of the mounting bracket (1) is bonded and fixed to the lower end face of the photovoltaic module (4) by structural adhesive (3).

9. The BIPV system for adding a building-integrated photovoltaic (BIPV) system to an existing metal roof according to claim 8, characterized in that, The photovoltaic module (4) is a frameless photovoltaic module, and the lower support plane (12) of the mounting fastener (1) is bonded and fixed to the roof rib support plane (22) by structural adhesive (3).

10. The BIPV system for adding a building-integrated photovoltaic (BIPV) roof to an existing metal roof according to claim 8, characterized in that, The photovoltaic module (4) is a frameless photovoltaic module. The bolt (7) is provided at the bolt hole (13b) of the mounting fastener (1). When the end of the bolt (7) abuts against the facade of one side of the lock seam (21) and the opening (12a) side of the mounting fastener (1) abuts against the facade of the other side of the lock seam (21), the mounting fastener (1) and the lock seam (21) form a clamping fixation.

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