BIPV double-layer waterproof roof system provided with primary and secondary stress wave profiled steel sheets

Abstract

The invention discloses a BIPV (building integrated photovoltaics) double-layer waterproof roof system provided with primary and secondary stress wave profiled steel sheets. The system mainly comprises a primary and secondary stress wave profiled steel sheet, a photovoltaic module and a module fixing and connecting frame. Primary and secondary stress wave profiled steel sheets are arranged to be in a double-splicing type and a whole-plate type, and each of the two types of profiled steel sheets is composed of a primary stress wave peak, a secondary stress wave peak and a wave trough. And the component fixed connecting frame is fixed on the wave peak of the main stress wave through a fastener. A thermal insulation structure layer and a built-in cable trough box can be laid on the lower portion of the photovoltaic assembly and within the wave crest range. Compared with a traditional roof profiled steel sheet, the roof profiled steel sheet is more reasonable in structure, smaller in deformation, more economical and convenient to install by adjusting the height, thickness and wave crest width of primary and secondary stress waves. The assembly fixing connecting frame is only arranged at the peak of the main stress wave, and a full-length guide rail or a water tank does not need to be arranged, so that the device is more economical. The double-spliced profiled steel sheet provided with the primary and secondary stress waves can be matched with different module widths, and has good adaptability for the trend that photovoltaic modules become larger and larger.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic (BIPV) and is specifically a BIPV double-layer waterproof roof system with primary and secondary stress-bearing corrugated steel plates. Background Art

[0003] At present, the traditional corrugated steel sheet BIPV double-layer waterproof roof system generally lays rails along the longitudinal direction of the roof corrugated steel sheet or lays drainage grooves along the roof slope direction, and fixes the photovoltaic modules through the rails and drainage grooves. The method of laying rails along the longitudinal direction of the roof corrugated steel sheet has the disadvantage of excessive module deformation, and the method of laying drainage grooves along the roof slope direction has the disadvantage that the fixed position of the drainage groove and the position of the corrugated steel sheet wave groove on the roof are uncertain.

[0004] In view of the existing deficiencies, the present invention provides a BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates, which not only does not require the installation of full-length guide rails or drainage grooves, but also overcomes the deficiencies of the prior art. The structure of the present invention has reasonable stress, small deformation, good economy and strong adaptability. Summary of the invention

[0005] In order to solve the problems in the prior art, the present invention provides a BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates. The present invention adopts the following technical solutions:

[0006] A BIPV double-layer waterproof roofing system with primary and secondary stress-bearing wave corrugated steel plates, mainly including primary and secondary stress-bearing wave corrugated steel plates, photovoltaic modules, and module fixing connection frames. When the primary and secondary stress-bearing wave corrugated steel plates are double-jointed corrugated steel plates, the primary and secondary stress-bearing wave corrugated steel plates include double-jointed main stress-bearing sections and double-jointed secondary stress-bearing sections, and the sum of the effective widths of the double-jointed main stress-bearing sections and the double-jointed secondary stress-bearing sections is consistent with the sum of the effective widths of a single photovoltaic module and an aluminum alloy cover plate. The double-jointed main stress-bearing section consists of a primary stress-bearing wave crest, a secondary stress-bearing wave crest, and a trough. The double-jointed secondary stress-bearing section consists of a secondary stress-bearing wave crest and a trough. When the primary and secondary stress-bearing wave corrugated steel plates are whole-plate corrugated steel plates, the primary and secondary stress-bearing wave corrugated steel plates include a primary stress-bearing wave crest, a secondary stress-bearing wave crest, and a trough. The effective width of the primary and secondary stress-bearing corrugated steel plates of the whole plate type is consistent with the effective width of a single photovoltaic module and the aluminum alloy cover plate.

[0007] The component fixing connection frame is fixed on the main force wave crest by a first fastener, and an isolation rubber piece is arranged between the component fixing connection frame and the main force wave crest. The photovoltaic component is fixed on the component fixing connection frame by a component pressing block and a component bolt, and an aluminum alloy cover plate is arranged at the gap on the photovoltaic component.

[0008] The main force wave crest is fixed to the support fixing frame at the support position by a first fastener. The support fixing frame is fixed to the support structure by a second fastener. When the component pressing block and the support position overlap, the component fixing connecting frame is fixed simultaneously by the first fastener and the main force wave crest and the support fixing frame. An isolation rubber piece is arranged between the component fixing connecting frame and the main force wave crest.

[0009] As a preferred technical solution of the present invention, the position of the main force wave can adjust the position of the wave crest according to the unfolded width of the photovoltaic module and the corrugated steel sheet, and can be spliced ​​at the end or set at the non-end position of the corrugated steel sheet.

[0010] As a preferred technical solution of the present invention, it can also include a thermal insulation structure layer, which is laid on the main stress wave crest and the secondary stress wave crest, and a flat steel support bar is set from the main stress wave crest to the range adjacent to the secondary stress wave crest. The flat steel support bar is fixed by a third fastener. Before laying the thermal insulation structure layer, a galvanized steel wire mesh layer is laid on the secondary stress wave crest surface, and the galvanized steel wire mesh layer is fixed to the secondary stress wave crest and the flat steel support bar by a third fastener. The thermal insulation structure layer is locally cut on site at the location of the component fixing connection frame.

[0011] A further preferred solution is that the roof system is provided with a switchable air inlet device at the lowest part of the assembly, and a switchable exhaust device is provided near the ridge (or a partial aluminum alloy cover plate is used), and an air flow layer is formed by using the space above and below the thermal insulation structure layer. When the temperature is high in summer, the air inlet and exhaust devices are opened to reduce the temperature of the roof.

[0012] As a preferred technical solution of the present invention, it can also include a built-in cable trough box, and the built-in cable trough box is fixed on the crest of the secondary stress wave by a third fastener.

[0013] As a preferred technical solution of the present invention, the connection form between the secondary stress wave crest and the supporting structure adopts a corresponding common connection method according to the form of the secondary stress wave crest. Stiffening ribs can also be provided as needed to increase local rigidity.

[0014] It should be noted that the crests and troughs described in the content correspond to the area from the center point of the web of the corrugated steel sheet to the top and the area from the center point of the web to the bottom. Other common connection methods such as photovoltaic modules, fasteners, bolts, connecting frames, support brackets, and corrugated steel sheets are common knowledge known to those skilled in the art and will not be elaborated in this article.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention sets primary and secondary stress waves, and adjusts the height, thickness, and peak width of the primary and secondary stress waves according to the different stresses on the structure at different positions, making the structure more reasonable and economical than the traditional roof corrugated steel sheet.

[0017] (2) The roof corrugated steel sheet of the present invention has a very high effective width ratio (effective width / expanded width) and good economy.

[0018] (3) The invention only sets a component fixing connection frame on the roof corrugated steel sheet, without setting a full-length guide rail or gutter, which is more economical than the conventional BIPV system. At the same time, it overcomes the disadvantages of excessive component deformation in the traditional BIPV roof method of laying guide rails along the longitudinal direction of the roof corrugated steel sheet, and overcomes the disadvantages of the traditional BIPV roof method of laying gutter along the roof slope direction, which has the problem of the fixed position of the gutter and the position of the corrugated steel sheet wave groove changing unpredictably.

[0019] (4) The present invention can be provided with a built-in cable trough box, which increases the installed capacity compared to conventional BIPV systems and further improves economic efficiency.

[0020] (5) The present invention can adjust the length of the double-jointed main load-bearing section and the double-jointed secondary load-bearing section by setting the main and secondary load-bearing corrugated steel plates in a double-jointed manner to match different component widths, and has good adaptability to the trend of photovoltaic components becoming larger and larger.

[0021] (6) Compared with the traditional single-layer corrugated steel plate composite roof insulation system, the present invention has an upwardly moved insulation structure layer, which has a better visual effect indoors and is convenient for the maintenance of purlins and main structures. Compared with the traditional double-layer corrugated steel plate composite roof insulation with exposed purlins, it saves additional purlins and a layer of corrugated steel plate.

[0022] (7) Compared with the traditional single-layer corrugated steel sheet, the wave crest pattern and the interface form of adjacent corrugated steel sheets of the present invention can be adjusted relatively flexibly according to needs.

[0023] (8) Compared with the conventional single-layer corrugated steel sheet, the corrugated steel sheet of the present invention has a longer service life.

[0024] (9) Compared with mainstream BIPV products with partial gaps, the present invention has more rigorous waterproof performance and achieves a double-layer waterproof function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Schematic diagram of the cross section of the BIPV double-layer waterproof roof system with primary and secondary stress-bearing corrugated steel plates;

[0026] Figure 2 : Schematic diagram of overlap of double-jointed primary and secondary stress wave corrugated steel plates;

[0027] Figure 3: Double-joined main load-bearing section detail drawing and double-joined secondary load-bearing section detail drawing;

[0028] Figure 4 : Schematic diagram of the cross section of the BIPV double-layer waterproof roof system with primary and secondary stress-bearing wave-corrugated steel plates;

[0029] Figure 5 : Detailed drawing of the whole plate type primary and secondary stress wave profiled steel plate;

[0030] Figure 6 : Schematic diagram of the cross section of the connection between photovoltaic modules and corrugated steel roof;

[0031] Figure 7 : Schematic diagram of the connection section when the pressure block is located at the support position;

[0032] Figure 8 : Schematic diagram of the connection section of the general support position;

[0033] Fig. 9 : Schematic diagram of roof with thermal insulation structure layer;

[0034] Fig.10 : Schematic diagram of roof with built-in cable trough box.

[0035] Figure numerals: 1. Corrugated steel plate with primary and secondary stress waves; 2. Photovoltaic module; 3. Module fixing connection frame; 4. Double-jointed main stress section; 5. Double-jointed secondary stress section; 6. Main stress wave crest; 7. Secondary stress wave crest; 8. Wave trough; 9. First fastener; 10. Isolation rubber part; 11. Module pressing block; 12. Module bolt; 13. Aluminum alloy cover plate; 14. Support fixing frame; 15. Second fastener; 16. Support structure; 17. Insulation structure layer; 18. Flat steel support bar; 19. Third fastener; 20. Galvanized steel wire mesh layer; 21. Built-in cable trough box. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following will be combined with specific embodiments to describe the specific implementation of the present invention in detail.

[0037] Example 1: See Figures 1 to 3, 6-10, a BIPV double-layer waterproof roofing system with primary and secondary stress wave corrugated steel plates, including primary and secondary stress wave corrugated steel plates 1, photovoltaic modules 2, and module fixing connection frames 3. The primary and secondary stress wave corrugated steel plates 1 are double-jointed corrugated steel plates, and the primary and secondary stress wave corrugated steel plates 1 include double-jointed primary stress sections 4 and double-jointed secondary stress sections 5. The sum of the effective widths of the double-jointed primary stress sections 4 and the double-jointed secondary stress sections 5 is consistent with the sum of the effective widths of the single photovoltaic module 2 and the aluminum alloy cover plate 13. The double-jointed primary stress section 4 includes a primary stress wave crest 6, a secondary stress wave crest 7, and a trough 8. The double-jointed secondary stress section 5 includes a secondary stress wave crest 7 and a trough 8.

[0038] Furthermore, the component fixing connecting frame 3 is fixed to the main force wave crest 6 by a first fastener 9, and an isolation rubber member 10 is provided between the component fixing connecting frame 3 and the main force wave crest 6. The photovoltaic component 2 is fixed to the component fixing connecting frame 3 by a component pressing block 11 and a component bolt 12, and an aluminum alloy cover plate 13 is provided at the gap on the photovoltaic component 2.

[0039] Furthermore, the main force wave crest 6 is fixed to the support fixing frame 14 at the support position by the first fastener 9. The support fixing frame 14 is fixed to the support structure 16 by the second fastener 15. When the component pressing block 11 and the support position overlap, the component fixing connecting frame 3 is fixed to the main force wave crest 6 and the support fixing frame 14 by the first fastener 9. An isolation rubber member 10 is arranged between the component fixing connecting frame 3 and the main force wave crest 6.

[0040] Furthermore, a thermal insulation structure layer 17 is provided, and the thermal insulation structure layer 17 is laid on the primary stress wave crest 6 and the secondary stress wave crest 7, and a flat steel support bar 18 is provided from the primary stress wave crest 6 to the range adjacent to the secondary stress wave crest 7. The flat steel support bar 18 is fixed by a third fastener 19. Before the thermal insulation structure layer 17 is laid, a galvanized steel wire mesh layer 20 is laid on the secondary stress wave crest 7, and the galvanized steel wire mesh layer 20 is fixed to the secondary stress wave crest 7 and the flat steel support bar 18 by a third fastener 19. The thermal insulation structure layer is partially cut on site at the position of the component fixing connection frame.

[0041] Further, a built-in cable trough box 21 can be provided, and the built-in cable trough box 21 is fixed on the secondary stress wave crest 7 through the third fastener 19. And an inspection hole is reserved at an appropriate position on the roof.

[0042] Preferably, the tops of the primary stress wave section 6 and the secondary stress wave crest 7 are made of flat plates, and the roof corrugated steel plates are overlapped along the roof slope direction. The secondary stress wave crest 7 is fixed to the supporting structure with self-tapping screws.

[0043] Preferably, the first fastener 9 and the third fastener 19 are self-tapping screws, and the second fastener 15 is a bolt.

[0044] Preferably, the supporting structure adopts C-shaped purlins.

[0045] Preferably, the fixed connecting frame is made of aluminum alloy.

[0046] Example 2: See Figures 4-5 6-10, a BIPV double-layer waterproof roof system with primary and secondary stress wave corrugated steel plates, including primary and secondary stress wave corrugated steel plates 1, photovoltaic modules 2, and module fixing connection frames 3. The primary and secondary stress wave corrugated steel plates 1 are whole plate corrugated steel plates, and the whole plate primary and secondary stress wave corrugated steel plates 1 include a primary stress wave crest 6, a secondary stress wave crest 7, and a trough 8. The effective width of the whole plate primary and secondary stress wave corrugated steel plates 1 is consistent with the effective width of a single photovoltaic module 2 and an aluminum alloy cover plate 13.

[0047] Further and preferred contents are the same as those in Example 1.

[0048] It should be particularly noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A BIPV double-layer waterproof roof system with primary and secondary stress-bearing corrugated steel plates, characterized in that: The invention mainly comprises primary and secondary stress-bearing wave-shaped steel plates (1), photovoltaic components (2), and a component fixing connection frame (3).

2. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: When the primary and secondary stress wave corrugated steel plate (1) is formed by two steel plates being pressed and spliced ​​into a double-spliced ​​primary and secondary stress wave corrugated steel plate, the primary and secondary stress wave corrugated steel plate (1) comprises a double-spliced ​​primary stress section (4) and a double-spliced ​​secondary stress section (5); the sum of the effective widths of the double-spliced ​​primary stress section (4) and the double-spliced ​​secondary stress section (5) is consistent with the sum of the effective widths of a single photovoltaic module (2) and an aluminum alloy cover plate (13); the double-spliced ​​primary stress section (4) comprises a primary stress wave crest (6), a secondary stress wave crest (7) and a trough (8); the double-spliced ​​secondary stress section (5) comprises a secondary stress wave crest (7) and a trough (8).

3. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: When the primary and secondary stress wave corrugated steel plate (1) is a whole-plate primary and secondary stress wave corrugated steel plate made by pressing a piece of steel plate, the primary and secondary stress wave corrugated steel plate (1) comprises a primary stress wave crest (6), a secondary stress wave crest (7) and a trough (8); and the effective width of the primary and secondary stress wave corrugated steel plate (1) is consistent with the effective width of a single photovoltaic module (2) and an aluminum alloy cover plate (13).

4. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: The component fixing connection frame (3) is fixed to the main force wave crest (6) by means of a first fastener (9), and an isolation rubber member (10) is arranged between the component fixing connection frame (3) and the main force wave crest (6); the photovoltaic component (2) is fixed to the component fixing connection frame (3) by means of a component pressing block (11) and component bolts (12), and an aluminum alloy cover plate (13) is arranged at a gap on the photovoltaic component (2).

5. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: The main force wave crest (6) is fixed to the support fixing frame (14) at the support position by a first fastener (9); the support fixing frame (14) is fixed to the support structure (16) by a second fastener (15); when the component pressing block (11) and the support position overlap, the component fixing connecting frame (3) is fixed to the main force wave crest (6) and the support fixing frame (14) by the first fastener (9); an isolation rubber part (10) is arranged between the component fixing connecting frame (3) and the main force wave crest (6).

6. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: It also includes a thermal insulation structure layer (17), the thermal insulation structure layer (17) is laid on the main stress wave crest (6) and the secondary stress wave crest (7), and a flat steel support bar (18) is arranged in the range from the main stress wave crest (6) to the secondary stress wave crest (7); the flat steel support bar (18) is fixed by a third fastener (19); before the thermal insulation structure layer (17) is laid, a galvanized steel wire mesh layer (20) is laid on the surface of the secondary stress wave crest (7), and the galvanized steel wire mesh layer (20) is fixed to the secondary stress wave crest (7) and the flat steel support bar (18) by a third fastener (19).

7. The BIPV double-layer waterproof roofing system with primary and secondary stress-bearing corrugated steel plates according to claim 1 is characterized in that: It may also include a built-in cable trough box (21), wherein the built-in cable trough box (21) is fixed on the secondary stress wave crest (7) via a third fastener (19).

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