Arc-shaped trapezoidal color steel tile roof distributed photovoltaic panel installation method

Abstract

The present application relates to the technical field of distributed photovoltaic power generation engineering, and particularly relates to a kind of arc trapezoidal color steel tile roof distributed photovoltaic panel installation method, including, solve the traditional installation scheme without the standardization of support adaptation system, cannot be accurate matching for the corrugated specification of arc trapezoidal color steel tile, roof curvature, installation precision is low, and the compatibility of different specifications photovoltaic module is poor, further limit its scale application in distributed photovoltaic engineering problem.

Description

Technical Field

[0001] This invention relates to the field of distributed photovoltaic power generation engineering technology, and in particular to a method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof. Background Technology

[0002] In distributed photovoltaic (PV) power generation projects, curved trapezoidal corrugated steel roofs present a challenge for PV panel installation due to their inherent curved structure. Current technologies for PV panel installation on such roofs often employ lightweight, flexible adhesive bonding, directly attaching the PV modules to the roof surface using tape or structural adhesive.

[0003] Meanwhile, traditional installation methods lack a standardized bracket adaptation system, making it impossible to accurately match the corrugation specifications and roof curvature of curved trapezoidal color steel tiles. This results in low installation accuracy and poor compatibility with photovoltaic modules of different specifications, further limiting their large-scale application in distributed photovoltaic projects. Summary of the Invention

[0004] The purpose of this invention is to provide a method for installing distributed photovoltaic panels on curved trapezoidal color steel tile roofs. This method solves the problems of traditional installation schemes, which lack a standardized bracket adaptation system, cannot accurately match the corrugation specifications and roof curvature of curved trapezoidal color steel tiles, have low installation accuracy, and have poor compatibility with photovoltaic modules of different specifications, further limiting their large-scale application in distributed photovoltaic projects.

[0005] To achieve the above objectives, the present invention provides a method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof, comprising the following steps; 1) Before construction, conduct on-site measurements of the curved trapezoidal corrugated steel roof to obtain parameters such as roof curvature radius, purlin spacing, corrugated steel tile thickness, and corrugated specifications. Based on the measured parameters, complete the customized processing and on-site trial installation of each component of the photovoltaic panel installation system. 2) Install adjustable height trapezoidal clamps that match the specifications of the corrugated sheets above the purlins of the arched trapezoidal corrugated steel roof. 3) The connection between the adjustable height trapezoidal clamp and the arc trapezoidal color steel tile roof is covered with two-component silicone sealant to ensure that the silicone sealant completely covers the self-tapping screw nut. 4) Install the steel guide rail and crossbeam sequentially along the installation direction of the adjustable height trapezoidal clamp, and fix the steel guide rail, crossbeam and adjustable height trapezoidal clamp together by using pressure block assembly; 5) Install custom-made arc-shaped main water channel and secondary water channel to form an integrated directional drainage and flow guiding structure; 6) Install the photovoltaic panels onto the combined support structure of the steel guide rail and crossbeam to fix the photovoltaic panels. The overall installation accuracy should be controlled within ±0.5°.

[0006] The photovoltaic panel installation system described in step 1) includes adjustable height trapezoidal clamps, steel guide rails, an arc-shaped main water channel, a secondary water channel, crossbeams, and pressure block assemblies. The arc-shaped main water channel is bent by a bending machine according to the measured curvature of the roof before leaving the factory, and its cross-sectional thickness is adjusted according to the measured purlin spacing to meet the requirements of the photovoltaic building integrated design specification. The cross-sectional height of the secondary water channel is adjusted according to the measured radius of curvature of the roof.

[0007] The bottom width of the arc-shaped main water channel is larger than that of the conventional flat roof main water channel to accommodate arc-shaped trapezoidal corrugated steel tile roofs with different radii of curvature.

[0008] When the radius of curvature of the arc-shaped trapezoidal corrugated steel roof is 30m to 45m, the cross-sectional height of the secondary water guide channel is adjusted to a preset size that matches the radius of curvature to ensure that the secondary water guide channel fits the curved surface of the roof and is reliably installed.

[0009] In step 1), the two-component silicone adhesive has undergone high temperature and high humidity aging tests and adhesive performance tests, and its aging resistance and adhesive performance are not lower than the design service life of the steel structure.

[0010] The method is suitable for curved trapezoidal corrugated steel roofs with a curvature radius of 20m-100m and a corrugated steel roof thickness of 0.6mm-1.2mm.

[0011] In step 6), the photovoltaic panels installed are 500W-750W photovoltaic modules, and after installation, the photovoltaic panels are seamlessly attached to the curved surface of the arc-shaped trapezoidal color steel tile roof.

[0012] In step 4), the steel guide rail is a full-length guide rail with a specification of 41.3X21.3X1.5. The steel guide rail is fixed to the crossarm with ST5.5*25 self-tapping screws, and the adjustable height trapezoidal clamp is fixed to the purlin with 410 self-tapping screws ST6.3.

[0013] In step 4), the crossarm is an aluminum alloy crossarm, which is bonded and reinforced to the steel guide rail with neutral silicone structural adhesive, and is also fastened with M8X30 internal hex bolts, flat washers, spring washers and nuts; the adjustable height trapezoidal clamps are fastened with M8X30 external hex bolts, flat washers, spring washers and double nuts.

[0014] In step 5), the curvature of the arc-shaped main water channel matches the curvature of the arc-shaped trapezoidal corrugated steel roof, and the curvature error between the two is controlled within ±0.5°; the connection between the secondary water channel and the arc-shaped main water channel is sealed with an adhesive water guide clamp to form a continuous drainage path.

[0015] The present invention relates to a method for installing distributed photovoltaic panels on curved trapezoidal corrugated steel roofs. Based on a collaborative design system of customized curved brackets, adaptive fixing components, and integrated sealing protection, this method achieves precise and reliable installation of photovoltaic panels through on-site measurement and manufacturing of adaptable components, standardized installation and fixing structures, and integrated drainage and protection systems. The overall installation accuracy is controlled within ±0.5°. This solves the problems of traditional installation schemes, which lack standardized bracket adaptation systems, cannot accurately match the corrugation specifications and roof curvature of curved trapezoidal corrugated steel roofs, resulting in low installation accuracy and poor compatibility with photovoltaic modules of different specifications, further limiting their large-scale application in distributed photovoltaic projects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a structural schematic diagram of the method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the steel guide rail and the main water tank according to the first embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional schematic diagram of the installation method of distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention.

[0020] Figure 4 This is a flowchart of the installation method of distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention.

[0021] In the diagram: 1-Adjustable height trapezoidal clamp, 2-Steel guide rail, 3-Arc-shaped main water channel, 4-Secondary water channel, 5-Aluminum alloy crossbeam, 6-Pressure block assembly, 7-Two-component silicone sealant coating layer, 8-Adhesive water guide clamp, 9-Purifier, 10-Arc-shaped trapezoidal color steel tile roof, 11-Photovoltaic panel. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] The first embodiment of this application is as follows: Please see Figures 1 to 4 ,in, Figure 1 This is a structural schematic diagram of the method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention. Figure 2This is a schematic diagram of the steel guide rail and main water tank according to the first embodiment of the present invention. Figure 3 This is a cross-sectional schematic diagram of the installation method of distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention. Figure 4 This is a flowchart of the installation method for distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof according to the first embodiment of the present invention. The present invention provides an installation method for distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof, including: The aforementioned solution solves the problem that traditional installation schemes lack a standardized bracket adaptation system, cannot accurately match the corrugation specifications and roof curvature of arc-shaped trapezoidal color steel tiles, have low installation accuracy, and poor compatibility with photovoltaic modules of different specifications, further limiting their large-scale application in distributed photovoltaic projects.

[0024] In this specific embodiment, the roof curvature radius is 35m, the corrugated steel sheet thickness is 0.8mm, the purlin spacing is 1.2m, and 700W rigid photovoltaic modules are to be installed. The installation method of this invention is adopted, and the specific implementation steps are as follows: Preliminary Measurement and Custom Processing: A laser rangefinder and curvature measuring instrument were used to conduct on-site measurements of the factory's curved trapezoidal corrugated steel roof, accurately obtaining parameters such as a roof curvature radius of 35m, purlin spacing of 1.2m, corrugated steel tile thickness of 0.8mm, and corrugation width of 80mm. Based on these parameters, the factory customized and processed adjustable height trapezoidal clamps, continuous steel guide rails with specifications of 41.3X21.3X1.5mm, curved main water channel, secondary water channel, aluminum alloy crossbeams, and pressure block assemblies. Among them, the curved main water channel was bent to a curvature radius of 35m using a bending machine, the cross-sectional thickness was adjusted to 2.0mm, and the net width of the channel bottom was increased by 10mm compared to the conventional main water channel. The secondary water channel adopted a preset cross-sectional size based on a curvature radius of 35m (belonging to the 30m~45m range), and the cross-sectional height was increased to 80mm. After all the customized components were transported to the site, trial assembly was carried out to confirm that each component was completely matched with the roof parameters.

[0025] Installation of adjustable height trapezoidal clamps: On the corrugated part above the purlins of the curved trapezoidal corrugated steel roof, install customized adjustable height trapezoidal clamps at 1.5m intervals. Use 410 self-tapping screws ST6.3 to fix the clamps to the purlins. The clamps are then tightened together with M8X30 hex bolts with one flat and one spring double nut to ensure that the clamps are installed flat and without looseness.

[0026] Sealing treatment at clamp connections: Use two-component silicone sealant that has undergone high temperature and humidity aging test to fully cover the self-tapping screw connection between the clamp and the roof, ensuring that the silicone sealant completely covers the self-tapping screw nut, with a covering layer thickness of not less than 3mm. Subsequent construction can only be carried out after the silicone sealant has initially cured.

[0027] Assemble and fix the guide rail and crossarm: Lay the full-length steel guide rail and aluminum alloy crossarm sequentially along the installation direction of the clamp. Fix the steel guide rail and crossarm together with ST5.5*25 self-tapping screws at 30cm intervals. Apply neutral silicone structural adhesive to the contact surface of the aluminum alloy crossarm and the steel guide rail for bonding and reinforcement. At the same time, use M8X30 hex bolts with one flat bolt, one spring bolt, and one nut at 50cm intervals for further tightening. Finally, use pressure blocks to lock the steel guide rail, crossarm, and adjustable height trapezoidal clamp to form an integrated rigid support structure, ensuring that the support structure does not shake and the force is evenly distributed.

[0028] Integrated installation of the drainage channel: The customized arc-shaped main drainage channel is installed to the drainage end of the supporting structure, ensuring that the curvature of the main drainage channel matches the curvature of the roof, with the error controlled within ±0.5°; then the secondary drainage channel is installed, and the connection between the secondary drainage channel and the main drainage channel is sealed with an adhesive drainage clamp. Neutral silicone structural adhesive is applied between the drainage clamp and the drainage channel to form a continuous, gapless directional drainage structure; after installation, the drainage slope of the drainage channel is checked to ensure that rainwater can be smoothly guided.

[0029] Photovoltaic panel installation and fixing: Install the 700W rigid photovoltaic panels one by one onto the integrated support structure of steel guide rails and aluminum alloy crossbeams. Fix the photovoltaic panels with pressure blocks to ensure that the photovoltaic panels fit seamlessly with the curved roof and the gap between the splicing seams of adjacent photovoltaic panels is no more than 2mm. After all photovoltaic panels are installed, check the overall installation accuracy to ensure that the error is within ±0.5°, and complete the overall installation of the photovoltaic system.

[0030] The method for installing distributed photovoltaic panels on curved trapezoidal corrugated steel roofs in this embodiment is based on a collaborative design system of customized curved brackets, adaptive fixing components, and integrated sealing protection. Through on-site measurement and manufacturing of adaptable components, standardized installation and fixing structures, and integrated drainage and protection systems, the method achieves precise and reliable installation of photovoltaic panels. The overall installation accuracy is controlled within ±0.5°. This solves the problems of traditional installation schemes, which lack standardized bracket adaptation systems, cannot accurately match the corrugation specifications and roof curvature of curved trapezoidal corrugated steel roofs, resulting in low installation accuracy and poor compatibility with photovoltaic modules of different specifications, further limiting their large-scale application in distributed photovoltaic projects.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof, characterized in that, Includes the following steps; 1) Before construction, conduct on-site measurements of the curved trapezoidal corrugated steel roof to obtain parameters such as roof curvature radius, purlin spacing, corrugated steel tile thickness, and corrugated specifications. Based on the measured parameters, complete the customized processing and on-site trial installation of each component of the photovoltaic panel installation system. 2) Install adjustable height trapezoidal clamps that match the specifications of the corrugated sheets above the purlins of the arched trapezoidal corrugated steel roof. 3) The connection between the adjustable height trapezoidal clamp and the arc trapezoidal color steel tile roof is covered with two-component silicone sealant to ensure that the silicone sealant completely covers the self-tapping screw nut. 4) Install the steel guide rail and crossbeam sequentially along the installation direction of the adjustable height trapezoidal clamp, and fix the steel guide rail, crossbeam and adjustable height trapezoidal clamp together by using pressure block assembly; 5) Install custom-made arc-shaped main water channel and secondary water channel to form an integrated directional drainage and flow guiding structure; 6) Install the photovoltaic panels onto the combined support structure of the steel guide rail and crossbeam to fix the photovoltaic panels. The overall installation accuracy should be controlled within ±0.5°.

2. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 1, characterized in that, The components of the photovoltaic panel installation system described in step 1) include an adjustable height trapezoidal clamp, steel guide rails, an arc-shaped main water channel, a secondary water channel, crossbeams, and a pressure block assembly. The arc-shaped main water channel is bent by a bending machine according to the measured curvature of the roof before leaving the factory, and its cross-sectional thickness is adjusted according to the measured purlin spacing to meet the requirements of the photovoltaic building integrated design specification. The cross-sectional height of the secondary water channel is adjusted according to the measured radius of curvature of the roof.

3. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 2, characterized in that, The bottom width of the arc-shaped main water channel is larger than that of the conventional flat roof main water channel to accommodate arc-shaped trapezoidal corrugated steel tile roofs with different radii of curvature.

4. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 3, characterized in that, When the radius of curvature of the arc-shaped trapezoidal corrugated steel roof is 30m to 45m, the cross-sectional height of the secondary water guide channel is adjusted to a preset size that matches the radius of curvature to ensure that the secondary water guide channel fits the curved surface of the roof and is reliably installed.

5. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 4, characterized in that, The two-component silicone sealant described in step 1) has undergone high temperature and high humidity aging tests and adhesive performance tests in advance, and its aging resistance and adhesive performance are not lower than the design service life of the main steel structure.

6. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 5, characterized in that, This method is suitable for curved trapezoidal corrugated steel roofs with a curvature radius of 20m-100m and a corrugated steel roof thickness of 0.6mm-1.2mm.

7. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 6, characterized in that, The photovoltaic panels installed in step 6) are 500W-750W photovoltaic modules. After installation, the photovoltaic panels are seamlessly attached to the curved surface of the arc-shaped trapezoidal color steel tile roof.

8. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 7, characterized in that, The steel guide rail mentioned in step 4) is a full-length guide rail with a specification of 41.3X21.3X1.

5. The steel guide rail is fixed to the crossarm with ST5.5*25 self-tapping screws, and the adjustable height trapezoidal clamp is fixed to the purlin with 410 self-tapping screws ST6.

3.

9. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 8, characterized in that, The crossarm mentioned in step 4) is an aluminum alloy crossarm. The aluminum alloy crossarm is bonded and reinforced to the steel guide rail with neutral silicone structural adhesive, and is also fastened with M8X30 internal hex bolts, flat washers, spring washers and nuts. The adjustable height trapezoidal clamps are fastened with M8X30 external hex bolts, flat washers, spring washers and double nuts.

10. The method for installing distributed photovoltaic panels on an arc-shaped trapezoidal color steel tile roof as described in claim 9, characterized in that, In step 5), the curvature of the arc-shaped main water channel matches the curvature of the arc-shaped trapezoidal corrugated steel roof, and the curvature error between the two is controlled within ±0.5°; the connection between the secondary water channel and the arc-shaped main water channel is sealed with an adhesive water guide clamp to form a continuous drainage path.

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