A dust-proof type photovoltaic module steel frame structure

Abstract

The utility model relates to a kind of dust accumulation prevention type photovoltaic module steel frame structure, right-angle support part includes first outer side plate, horizontal transverse plate and inner side wall board, first outer side plate upper end and inner side wall board upper end are bent inward to form inner bend plate, horizontal transverse plate inner side end is equipped with step bend plate, the outer side surface and bottom surface of component laminated part and between inner side wall board and horizontal transverse plate form glue accommodating cavity accommodating sealant;Corner code connecting part has rectangular inner cavity for riveting component corner code;Mounting portion has mounting inner cavity, the bottom surface center of mounting inner cavity is equipped with long slot, the long slot side has slide rail for hoisting fixing bolt.The utility model can avoid the occurrence of component front overflow phenomenon in installation process, increase the contact area between sealant and frame glue groove, improve the peel strength between photovoltaic component laminated part and frame, installation is convenient and simple, improve the consistency of frame installation position between different version components.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a steel frame structure for a photovoltaic module that prevents dust accumulation. Background Technology

[0002] During use, dust easily accumulates on the frame of photovoltaic modules. Excessive dust accumulation can reduce the light transmittance of photovoltaic modules, and may even cause local overheating, damage the structure of photovoltaic modules, and shorten their service life.

[0003] Most existing photovoltaic module frames are made of aluminum alloy profiles, and the improvement of anti-dust photovoltaic modules is mainly focused on the A-side without the frame. However, the mechanical load performance of this frameless A-side is lower than that of the frame with the A-side, and the back load is also prone to the lamination detaching from the frame. Moreover, the uniformity of glue overflow on the frame of the module without the A-side is difficult to control, and excessive glue overflow on the front side increases the difficulty of cleaning. In addition, the process of cleaning glue overflow may cause scratches on the photovoltaic glass.

[0004] Currently, some module frames are using steel profiles instead of aluminum profiles. However, the aforementioned problems still exist in module structures using steel profiles. Therefore, it is necessary to improve the frame structure to solve the problem of adhesive overflow on the front of the module and further improve the mechanical performance of the module frame. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a steel frame structure for photovoltaic modules that prevents dust accumulation.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a dust-proof photovoltaic module steel frame structure, which has the following characteristics: A right-angle support section is used to support the side of the steel frame. It includes a first outer plate and a horizontal plate whose outer end is perpendicularly connected to the first outer plate. The inner side of the first outer plate is provided with an inner wall plate. The upper end of the first outer plate and the upper end of the inner wall plate are bent inward to form an inner bending plate. The inner end of the horizontal plate is provided with a stepped bending plate. The bottom surface of the photovoltaic module laminate is supported on the upper surface of the stepped bending plate. The outer side of the module laminate is attached to the inner side of the inner bending plate. The outer side and bottom surface of the module laminate, the inner wall plate and the horizontal plate form a cavity for accommodating sealant. The corner bracket connecting part, located on the bottom surface of the right-angle support part, has a rectangular inner cavity for riveting the corner bracket of the component; The mounting part is located on the bottom surface of the corner bracket connecting part and has a mounting cavity. A long groove is opened in the center of the bottom surface of the mounting cavity, and slide rails are provided on both sides of the long groove. A drainage groove is provided between the center of the bottom surface of the rectangular inner cavity and the center of the top surface of the mounting inner cavity.

[0007] Specifically, the corner bracket connecting part has a second outer side plate, a first bent inner plate and a second bent inner plate, and the downward extension of the first outer side plate, the horizontal cross plate, the second outer side plate, the first bent inner plate and the second bent inner plate together form the rectangular inner cavity.

[0008] Furthermore, the outer end of the first bent inner plate is fixedly connected to the bottom end of the downward extension section of the first outer outer plate, the outer end of the second bent inner plate is fixedly connected to the bottom end of the second outer outer plate, and the gap between the inner end of the first bent inner plate and the inner end of the second bent inner plate forms the drainage groove.

[0009] Furthermore, a transition bending plate is connected between the upper end of the stepped bending plate and the second outer side plate.

[0010] Specifically, the mounting section includes a third outer side plate, a fourth outer side plate, a first bent bottom plate, and a second bent bottom plate. The first bent inner plate, the second bent inner plate, the third outer side plate, the fourth outer side plate, the first bent bottom plate, and the second bent bottom plate together form the mounting cavity.

[0011] Furthermore, the outer end of the first bent bottom plate is fixedly connected to the bottom end of the third outer side plate, the outer end of the second bent bottom plate is fixedly connected to the fourth outer side plate, and the gap between the inner end of the first bent bottom plate and the inner end of the second bent bottom plate forms the long groove.

[0012] Preferably, the upper surface of the first bent base plate and the upper surface of the second bent base plate constitute the slide rail.

[0013] The beneficial effects of this utility model are as follows: By setting an inner bending plate, this utility model avoids the phenomenon of glue overflow on the front of the component during installation. The stepped bending plate can increase the contact area between the sealant and the frame groove, thereby improving the peel strength between the photovoltaic module laminate and the frame. The adoption of a sliding rail installation structure makes the installation more diverse and improves the consistency of the frame installation position between different types of components. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the adhesive application process for the steel frame described in this utility model.

[0017] Figure 3 This is a schematic diagram of the excess adhesive on the steel frame of the present invention.

[0018] Figure 4 This is a schematic diagram of the overall installation of this utility model.

[0019] In the diagram: 1. First outer side plate, 2. Horizontal plate, 3. Inner side wall plate, 4. Inner bent plate, 5. Stepped bent plate, 6. Adhesive cavity, 7. Rectangular inner cavity, 8. Mounting inner cavity, 9. Long groove, 10. Slide rail, 11. Drainage groove, 12. Second outer side plate, 13. First bent inner plate, 14. Second bent inner plate, 15. Transition bent plate, 16. Third outer side plate, 17. Fourth outer side plate, 18. First bent bottom plate, 19. Second bent bottom plate, 20. Fixing bolt, 21. Component laminate, 22. Sealant, 23. Photovoltaic bracket, 24. Channel gasket, 25. Nut. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] like Figure 1 The illustrated anti-dust-accumulation photovoltaic module steel frame structure has a right-angle support part, a corner bracket connection part on the bottom surface of the right-angle support part, and a mounting part on the bottom surface of the corner bracket connection part. The right-angle support part is used to support the side of the module laminate 21. The corner bracket connection part has a rectangular inner cavity 7 for riveting the module corner bracket. The mounting part has a mounting inner cavity 8 for mounting the module laminate 21 onto the photovoltaic bracket 23. A drainage groove 11 is provided between the center of the bottom surface of the rectangular inner cavity 7 and the center of the top surface of the mounting inner cavity 8. A long groove 9 is opened at the center of the bottom surface of the mounting inner cavity 8. The long groove 9 has slide rails 10 on both sides for suspending and fixing bolts 20.

[0022] The right-angle support includes a first outer side plate 1, a horizontal plate 2, an inner side wall plate 3, and a transition bending plate 15. The first outer side plate 1 extends downward to the outer bottom surface of the corner bracket connection. The outer end of the horizontal plate 2 is perpendicularly connected to the middle of the first outer side plate 1. The inner side wall plate 3 is located on the inner side of the first outer side plate 1. The upper ends of the first outer side plate 1 and the upper ends of the inner side wall plate 3 are bent inward to form an inner bending plate 4. The inner end of the horizontal plate 2 is provided with a stepped bending plate 5.

[0023] During installation, the bottom surface of the component laminate 21 is supported on the upper surface of the stepped bending plate 5, and the outer side of the component laminate 21 is attached to the inner side of the inner bending plate 4. In this way, the outer side and bottom surface of the component laminate 21 form an adhesive cavity 6 for accommodating the sealant 22 between the inner wall plate 3 and the horizontal plate 2.

[0024] The inner bending plate 4 can form a blocking structure, which keeps the sealant 22 inside the adhesive cavity 6, preventing the sealant 22 from overflowing from the front of the component. The stepped bending plate 5 forms a more stable and firm support structure through multiple bends, which is conducive to controlling the full contact between the sealant 22 and the steel frame groove, increasing the contact surface between the sealant 22 and the steel frame, and improving the peel strength.

[0025] The corner bracket connecting part has a second outer side plate 12, a first bent inner plate 13 and a second bent inner plate 14. The downward extension of the first outer side plate 1, the horizontal cross plate 2, the second outer side plate 12, the first bent inner plate 13 and the second bent inner plate 14 together form the rectangular inner cavity 7; the transition bending plate 15 is connected between the stepped bending plate 5 and the upper end of the second outer side plate 12.

[0026] The outer end of the first bent inner plate 13 is fixedly connected to the bottom end of the downward extension of the first outer outer plate 1, and the outer end of the second bent inner plate 14 is fixedly connected to the bottom end of the second outer outer plate 12. The gap between the inner end of the first bent inner plate 13 and the inner end of the second bent inner plate 14 forms the drainage groove 11.

[0027] The mounting section includes a third outer side plate 16, a fourth outer side plate 17, a first bent bottom plate 18, and a second bent bottom plate 19. The first bent inner plate 13, the second bent inner plate 14, the third outer side plate 16, the fourth outer side plate 17, the first bent bottom plate 18, and the second bent bottom plate 19 together form the mounting cavity 8.

[0028] The outer end of the first bending base plate 18 is fixedly connected to the bottom end of the third outer side plate 16, and the outer end of the second bending base plate 19 is fixedly connected to the fourth outer side plate 17. The gap between the inner end of the first bending base plate 18 and the inner end of the second bending base plate 19 forms the long groove 9. The upper end surface of the first bending base plate 18 and the upper end surface of the second bending base plate 19 constitute the slide rail 10.

[0029] The rectangular inner cavity 7 of the corner bracket connector and the mounting inner cavity 8 of the mounting part form two spaces positioned vertically, without interfering with each other. By setting a drainage groove 11 between the center of the bottom surface of the rectangular inner cavity 7 and the center of the top surface of the mounting inner cavity 8, no additional drainage holes are needed on the entire frame, and the drainage effect is better than that of conventional drainage holes, which are few in number and small. The first bent base plate 18 and the second bent base plate 19 are bent, and the resulting slide rail 10 can enhance the load-bearing capacity of the fixing bolts 20. The conventional mounting hole structure makes the installation position of the component fixed, and special requirements require a custom frame. However, the slide rail 10 design allows the installation position to be selected, which can meet different installation needs.

[0030] like Figure 2 , Figure 3As shown, sealant 22 is first applied to the step of the step bending plate 5. When the component laminate 26 is pushed into the steel frame, sealant 22 enters the adhesive cavity 6. During this process, the inner bending plate 4 prevents the sealant 22 from overflowing from the front, so that there is no residual sealant on the front. The sealant 22 can fully contact the adhesive cavity 6 and overflow smoothly from the back, forming a completely sealed state.

[0031] Figure 4 Here is a schematic diagram of the overall installation structure of this utility model: First, a grooved washer 24 is placed on the fixing bolt 20 and then slid into the installation cavity 8. The grooved washer 24 is placed on the slide rail 10 with its opening facing upward. The fixing bolt 20 passes through the center hole and long groove 9 of the grooved washer 24. Then, a round washer and nut 25 are used at the position where fixation is required to install the photovoltaic module on the photovoltaic bracket 23.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dust-resistant photovoltaic module steel frame structure, characterized in that: have The right-angle support part is used to support the side of the steel frame, including a first outer plate (1) and a horizontal plate (2) whose outer end is perpendicular to the first outer plate (1). The inner side of the first outer plate (1) is provided with an inner wall plate (3). The upper end of the first outer plate (1) and the upper end of the inner wall plate (3) are bent inward to form an inner bending plate (4). The inner end of the horizontal plate (2) is provided with a stepped bending plate (5). The bottom surface of the photovoltaic module laminate (21) is supported on the upper surface of the stepped bending plate (5). The outer side of the module laminate (21) is attached to the inner side of the inner bending plate (4). The outer side and bottom surface of the module laminate (21) form a cavity (6) for accommodating sealant (22) between the inner wall plate (3) and the horizontal plate (2). The corner bracket connecting part, located on the bottom surface of the right-angle support part, has a rectangular inner cavity (7) for riveting the corner bracket of the component. The mounting part is located on the bottom surface of the corner bracket connection part and has a mounting cavity (8). A long groove (9) is opened in the center of the bottom surface of the mounting cavity (8), and slide rails (10) are provided on both sides of the long groove (9). A drainage groove (11) is provided between the center of the bottom surface of the rectangular inner cavity (7) and the center of the top surface of the mounting inner cavity (8).

2. The anti-dust-accumulation photovoltaic module steel frame structure as described in claim 1, characterized in that: The corner bracket connecting part has a second outer side plate (12), a first bent inner plate (13) and a second bent inner plate (14). The downward extension of the first outer side plate (1), the horizontal plate (2), the second outer side plate (12), the first bent inner plate (13) and the second bent inner plate (14) together form the rectangular inner cavity (7).

3. The anti-dust accumulation photovoltaic module steel frame structure as described in claim 2, characterized in that: The outer end of the first bent inner plate (13) is fixed to the bottom end of the downward extension of the first outer outer plate (1), the outer end of the second bent inner plate (14) is fixed to the bottom end of the second outer outer plate (12), and the gap between the inner end of the first bent inner plate (13) and the inner end of the second bent inner plate (14) forms the drainage groove (11).

4. The anti-dust accumulation photovoltaic module steel frame structure as described in claim 3, characterized in that: A transition bending plate (15) is connected between the stepped bending plate (5) and the upper end of the second outer side plate (12).

5. The anti-dust-accumulation photovoltaic module steel frame structure as described in claim 2, characterized in that: The mounting section includes a third outer side plate (16), a fourth outer side plate (17), a first bent bottom plate (18), and a second bent bottom plate (19). The first bent inner plate (13), the second bent inner plate (14), the third outer side plate (16), the fourth outer side plate (17), the first bent bottom plate (18), and the second bent bottom plate (19) together form the mounting cavity (8).

6. The anti-dust accumulation photovoltaic module steel frame structure as described in claim 5, characterized in that: The outer end of the first bent bottom plate (18) is fixedly connected to the bottom end of the third outer side plate (16), the outer end of the second bent bottom plate (19) is fixedly connected to the fourth outer side plate (17), and the gap between the inner end of the first bent bottom plate (18) and the inner end of the second bent bottom plate (19) forms the long groove (9).

7. The anti-dust-accumulation photovoltaic module steel frame structure as described in claim 6, characterized in that: The upper surface of the first bent base plate (18) and the upper surface of the second bent base plate (19) constitute the slide rail (10).

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