Roof structure of building integrated photovoltaics (BIPV) photovoltaic building

Abstract

The utility model discloses a roof structure of a building integrated photovoltaics (BIPV) photovoltaic building, which relates to the field of building integrated photovoltaics and comprises a water tank main beam, a water tank purline, an auxiliary water tank and a photovoltaic panel. The water tank purline is fixedly mounted on the water tank main beam, the end part of the water tank purline is arranged to lead to the water tank main beam, the auxiliary water tank is fixedly mounted on the water tank purline from the bottom side, and the end part of the auxiliary water tank is arranged to lead to the water tank purline; the long frame position of the photovoltaic panel is fixedly installed on the water tank purline from the bottom side, and the auxiliary water tank is arranged below the gap of the short frame of the photovoltaic panel. Compared with the prior art, the roof structure of the photovoltaic building has the advantages that the roof structure of the photovoltaic building is formed by the photovoltaic panels, the water tank purlins, the water tank main beams and the supporting columns, an additional main purlin system in the prior art is omitted, cost is low, assembly of the whole roof can be completed from the bottom side, and safety is improved.

Description

Technical Field

[0001] The utility model mainly relates to the field of photovoltaic building integration, and in particular to a roof structure of a BIPV photovoltaic building, which can be applied to photovoltaic sheds, solar storage and charging parking sheds, and industrial and commercial roof BIPV and BAPV fields, and can also be applied to roof awnings of other non-photovoltaic panels. Background Art

[0002] Since zinc-aluminum-magnesium coated steel plates have 30 years of anti-corrosion ability and the unique quality of self-healing and anti-scratch, they are the first choice for BIPV brackets in humid environments. The current rooftop photovoltaic shed BIPV system and solar storage and charging parking shed often use M-type or W-type zinc-aluminum-magnesium components, such as Fig.12 , Fig.13 As shown, the structural waterproof integration is realized; its disadvantage is that the flange of the zinc-aluminum-magnesium component is too narrow, and its cross-sectional stress performance is poor, and an additional main purlin 16 system is often added, resulting in increased costs; in addition, construction workers need to climb high to fix the pressing block 17 and bolts 18 from above the photovoltaic panel 4, which increases the safety hazard of photovoltaic shed installation, makes disassembly and assembly difficult, and is not conducive to maintenance, replacement and cleaning; in order to solve the problem of locking the bottom of the photovoltaic panel 4, another commonly used solution is to use galvanized steel pipes as purlins, and use hoop pressing blocks to tightly buckle the lower flange 19 of the photovoltaic panel frame. However, this method cannot use zinc-aluminum-magnesium cold-bent thin-walled profiles, and the accessories are complex and expensive; at the same time, it is also necessary to lay additional water guide grooves, which artificially pushes up the cost.

[0003] A Chinese utility model patent (publication number: CN208720538U, publication date: 20190409) discloses a BIPV bracket and a BIPV roof device. A Chinese utility model patent (publication number: CN208685945U, publication date: 20190402) also discloses a BIPV system elevated structure based on glass wool tape and waterproof breathable membrane laid on the purlins of the factory building. Their main drainage grooves are all W-shaped structures, and have the technical defects mentioned above. The cross-sectional stress performance of the main drainage grooves is poor, and additional main purlins need to be set, and they need to be installed and fixed on the top surface of the photovoltaic panels.

[0004] A Chinese utility model patent (publication number: CN211691097U, publication date: 20201016) discloses a BIPV photovoltaic roof system, which needs to be installed and fixed on the top surface of the photovoltaic panel. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0006] A roof structure of a BIPV photovoltaic building, comprising a water tank main beam, water tank purlins, an auxiliary water tank and a photovoltaic panel; the water tank purlins are fixedly installed on the water tank main beam, the ends of the water tank purlins are connected to the water tank main beam, the auxiliary water tank is fixedly installed on the water tank purlins from the bottom side, and the ends of the auxiliary water tanks are connected to the water tank purlins; the long frame position of the photovoltaic panel is fixedly installed on the water tank purlins from the bottom side, and the auxiliary water tank is arranged below the gap of the short frame of the photovoltaic panel.

[0007] Furthermore: the water tank purlin is bent into a double U-shaped strip structure, the water tank purlin adopts a wide flange cross-section structure with equal overall upper and lower widths, an n-shaped raised edge is formed in the middle of the upper side of the water tank purlin, and the long frame position of the photovoltaic panel is fixedly installed on the n-shaped raised edge of the water tank purlin from the bottom side.

[0008] Furthermore: the water tank purlin is bent into a U-shaped strip structure, and the end of the water tank purlin leads to the water tank main beam.

[0009] Further: Purlin reinforcement plates are installed at the two edges of the upper side of the water tank purlins by screws, the purlin reinforcement plates are bent to form two raised parts, and a U-shaped recessed position is formed between the middle part of the purlin reinforcement plates and the two raised parts, and fixed pressing fasteners are installed at both ends of the upper side of the purlin reinforcement plates, and the fixed pressing fasteners are bent to form raised edges, and the raised edges are pressed one by one on the raised parts of the purlin reinforcement plates, and the long frame of the photovoltaic panel is installed between the U-shaped recessed position and the fixed pressing fasteners.

[0010] Furthermore: both ends of the water tank purlin are formed with water guiding bevels, the water guiding bevels are bent downward, and the ends of the water tank purlins are connected to the water tank main beam through the water guiding bevels.

[0011] Further: there are multiple photovoltaic panels, and a rubber strip is provided in the gap between two adjacent photovoltaic panels.

[0012] Furthermore: the cross section of the rubber strip is in a T-shaped or π-shaped structure.

[0013] Further: a plurality of support columns are fixedly installed on the bottom side of the main beam of the water tank.

[0014] Furthermore: a plurality of the support columns are gradually shortened from the middle position of the roof structure to the edges on both sides, so that a plurality of photovoltaic panels form two planes inclined to the left and to the right, and the inclination angle of the main beam of the water tank is set to be the same as the inclined plane of the photovoltaic panel.

[0015] Furthermore: both ends of the water trough main beam are provided with water ditches, the water ditches and the water trough main beam are arranged perpendicular to each other, and the outer end of the water trough main beam leads to the water ditch.

[0016] Furthermore: the water tank main beam, water tank purlin and auxiliary water tank are all made of cold-bent thin-walled profiles.

[0017] Furthermore: the directions between the main beam of the water trough and the purlin of the water trough are arranged perpendicular to each other, and the directions between the auxiliary water trough and the purlin of the water trough are arranged perpendicular to each other.

[0018] Furthermore: two L-shaped purlin support plates are arranged between the water tank purlin and the water tank main beam, and two sides of the L-shaped purlin support plates are respectively fixed between the water tank purlin and the water tank main beam by screws.

[0019] Furthermore: the wall thickness of the water tank purlin is not less than 1.5 mm, the wall thickness of the L-shaped purlin support plate is not less than 2.0 mm, and the wall thickness of the auxiliary water tank is not less than 0.5 mm.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows: the roof structure of the photovoltaic building is composed of photovoltaic panels, gutter purlins, gutter main beams and support columns, which eliminates the additional main purlin system of the prior art, has low cost, and can complete the assembly of the entire roof from the bottom side, thereby improving safety.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a main structural schematic diagram of the utility model;

[0025] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at point A;

[0026] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure at B;

[0027] Figure 5 It is a structural schematic diagram of the second embodiment when a U-shaped water tank purlin is used;

[0028] Figure 6 yes Figure 5 A schematic diagram of the installation structure at another location;

[0029] Figure 7 This is a schematic diagram of the structure of the utility model after hiding part of the photovoltaic panel;

[0030] Figure 8 It is a schematic diagram of the installation structure of the water tank main beam, water tank purlin and auxiliary water tank;

[0031] Fig. 9 is a schematic diagram of the installation structure of the photovoltaic panel of the second embodiment;

[0032] Fig.10 is a schematic structural diagram of the raised portion and the fixed pressing fastener of the second embodiment;

[0033] Fig.11 is a schematic structural diagram of another protruding portion and a fixed pressing fastener in the second embodiment;

[0034] Fig.12 It is a structural schematic diagram of the prior art;

[0035] Fig.13 It is a structural schematic diagram of another prior art.

[0036] As shown in the figure: 1. Main beam of water tank; 2. Purlin of water tank; 3. Auxiliary water tank; 4. Photovoltaic panel; 5. Purlin reinforcement plate; 6. Raised part; 7. U-shaped recessed part; 8. Fixed fastener; 9. Raised edge; 10. Water guide bevel; 11. Rubber strip; 12. Support column; 13. Water ditch; 14. L-shaped purlin support plate; 15. N-shaped raised edge; 16. Main purlin; 17. Fixed pressure block; 18. Bolt; 19. Lower flange of frame. DETAILED DESCRIPTION

[0037] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0039] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1-11 As shown, a roof structure of a BIPV photovoltaic building of the utility model comprises a water tank main beam 1, a water tank purlin 2, an auxiliary water tank 3 and a photovoltaic panel 4; the water tank purlin 2 is fixedly mounted on the water tank main beam 1, and the end of the water tank purlin 2 is connected to the water tank main beam 1, and the auxiliary water tank 3 is fixedly mounted on the water tank purlin 2 from the bottom side, and the end of the auxiliary water tank 3 is connected to the water tank purlin 2; the long frame position of the photovoltaic panel 4 is fixedly mounted on the water tank purlin 2 from the bottom side, and the auxiliary water tank 3 is arranged below the short frame gap of the photovoltaic panel 4;

[0043] The principle is: the roof structure of the photovoltaic building is composed of photovoltaic panels 4, water tank purlins 2, water tank main beams 1 and support columns 12, which eliminates the additional main purlin system in the prior art, has low cost, and can complete the assembly of the entire roof from the bottom side, thereby improving safety.

[0044] Furthermore: the water tank purlin 2 is bent into a double U-shaped strip structure, and the water tank purlin 2 adopts a wide flange cross-section structure with equal upper and lower parts. An n-shaped raised edge 15 is formed in the middle of the upper side of the water tank purlin 2, and the long frame position of the photovoltaic panel 4 is fixedly installed on the n-shaped raised edge 15 of the water tank purlin 2 from the bottom side; through the overall equal upper and lower wide flange cross-section structure, the bending resistance of the water tank purlin 2 is improved, and the photovoltaic panel 4 can be installed on the side of the flange of the water tank purlin 2, realizing the installation scheme of the bottom side of the photovoltaic panel 4, which is convenient for disassembly and assembly, and reduces safety hazards. The double U-shaped strip structure ensures the shear resistance of the water tank purlin 2 and the stability under bending.

[0045] Furthermore: the water tank purlin 2 is bent into a U-shaped strip structure, and the end of the water tank purlin 2 leads to the water tank main beam 1.

[0046] Further: the two edges of the upper side of the water tank purlin 2 are installed with purlin reinforcement plates 5 by screws, and two raised parts 6 are bent on the purlin reinforcement plate 5, and a U-shaped recessed position 7 is formed between the middle part of the purlin reinforcement plate 5 and the two raised parts 6, and fixed pressing fasteners 8 are installed at both ends of the upper side of the purlin reinforcement plate 5, and the fixed pressing fasteners 8 are bent and formed with raised edges 9, and the raised edges 9 are pressed one by one on the raised parts 6 of the purlin reinforcement plate 5, and the long frame of the photovoltaic panel 4 is installed Between the U-shaped recessed position 7 and the fixed pressing fastener 8; the purlin reinforcement plate 5 can be used to increase the strength of the gutter purlin 2, avoid deformation of the U-shaped structure, and improve the service life. At the same time, the purlin reinforcement plate 5 is bent to form a U-shaped recessed position 7, which can realize the stable installation of the lower flange 19 of the bottom side frame of the photovoltaic panel 4, and then locked with the fixed pressing fastener 8, thereby realizing the installation and fixation of the photovoltaic panel 4 on the bottom side of the entire roof structure. There is no need to climb to a high place for assembly, and the installation efficiency is high.

[0047] Furthermore: both ends of the water tank purlin 2 are formed with water guide bevels 10, and the water guide bevels 10 are bent downward, and the ends of the water tank purlin 2 are connected to the water tank main beam 1 through the water guide bevels 10; so that the water in the water tank purlin 2 can flow to the water tank main beam 1 more smoothly, achieving stable drainage.

[0048] Furthermore: there are multiple photovoltaic panels 4, and a rubber strip 11 is provided in the gap between two adjacent photovoltaic panels 4; the cross-section of the rubber strip 11 is T-shaped or π-shaped; the rubber strip 11 with a suitable structure can be selected according to the actual installation position to form the first layer of waterproof measures.

[0049] Furthermore: a plurality of support columns 12 are fixedly installed on the bottom side of the water tank main beam 1; they can be combined into a photovoltaic shed structure, which is suitable for photovoltaic shed installation on the roof or on the ground.

[0050] Furthermore: a plurality of the support columns 12 are gradually shortened from the middle position of the roof structure to the edges on both sides, so that a plurality of photovoltaic panels 4 form two planes inclined to the left and to the right, and the inclination angle of the gutter main beam 1 is set to be the same as the inclined plane of the photovoltaic panel 4; rapid drainage can be achieved by inclination.

[0051] Furthermore: both ends of the water trough main beam 1 are provided with ditches 13, the ditches 13 and the water trough main beam 1 are arranged perpendicular to each other, and the outer end of the water trough main beam 1 leads to the ditches 13; it can effectively collect water flow and then discharge it to a suitable position, which is convenient for practical use.

[0052] Furthermore: the water tank main beam 1, water tank purlin 2, and auxiliary water tank 3 are all made of cold-bent thin-walled profiles; each component can be made by cold bending, using thin-walled profiles to cut into suitable shapes and then bend, which is low in cost, does not require welding, and increases service life.

[0053] Furthermore: the directions between the water tank main beam 1 and the water tank purlin 2 are arranged perpendicularly to each other, and the directions between the auxiliary water tank 3 and the water tank purlin 2 are arranged perpendicularly to each other.

[0054] Furthermore, two L-shaped purlin support plates 14 are arranged between the water tank purlin 2 and the water tank main beam 1, and the two sides of the L-shaped purlin support plates 14 are respectively fixed between the water tank purlin 2 and the water tank main beam 1 by screws; so that the installation of the water tank purlin 2 on the water tank main beam 1 is more stable.

[0055] Furthermore: the wall thickness of the water tank purlin 2 is not less than 1.5 mm, the wall thickness of the L-shaped purlin support plate 14 is not less than 2.0 mm, and the wall thickness of the auxiliary water tank 3 is not less than 0.5 mm; it has high strength, thereby ensuring the service life of the entire roof.

[0056] The working principle of the utility model is: T-shaped or π-shaped rubber strips 11 are installed at the gaps between multiple photovoltaic panels 4 to form a first waterproof measure; water that penetrates into the long frames of the photovoltaic panels 4 can flow to the water trough main beam 1 through the water trough purlin 2, and the water flow is guided by the U-shaped structure of the water trough purlin 2; water that penetrates into the short frames of the photovoltaic panels 4 can flow to the water trough purlin 2 and the water trough main beam 1 through the auxiliary water trough 3, and the water trough purlin 2, the water trough main beam 1 and the auxiliary water trough 3 form a second waterproof measure. Embodiment 1

[0057] A roof structure of a BIPV photovoltaic building includes a water trough main beam 1, a water trough purlin 2, an auxiliary water trough 3 and a photovoltaic panel 4; the water trough purlin 2 is fixedly installed on the water trough main beam 1, and the end of the water trough purlin 2 is connected to the water trough main beam 1, and the auxiliary water trough 3 is fixedly installed on the water trough purlin 2 from the bottom side, and the end of the auxiliary water trough 3 is connected to the water trough purlin 2; the long frame position of the photovoltaic panel 4 is fixedly installed on the water trough purlin 2 from the bottom side, and the auxiliary water trough 3 is arranged below the short frame gap of the photovoltaic panel 4.

[0058] The water tank purlin 2 is bent into a double U-shaped strip structure. The water tank purlin 2 adopts a wide flange cross-section structure with equal upper and lower overall width. An n-shaped raised edge 15 is formed in the middle of the upper side of the water tank purlin 2. The long frame position of the photovoltaic panel 4 is fixedly installed on the n-shaped raised edge 15 of the water tank purlin 2 from the bottom side.

[0059] It can ensure the stable installation of the photovoltaic panel 4, is suitable for the installation of the photovoltaic panel 4 with a flat plate structure, and can be installed and fixed from the bottom side with high safety. Embodiment 2

[0060] A roof structure of a BIPV photovoltaic building includes a water trough main beam 1, a water trough purlin 2, an auxiliary water trough 3 and a photovoltaic panel 4; the water trough purlin 2 is fixedly installed on the water trough main beam 1, and the end of the water trough purlin 2 is connected to the water trough main beam 1, and the auxiliary water trough 3 is fixedly installed on the water trough purlin 2 from the bottom side, and the end of the auxiliary water trough 3 is connected to the water trough purlin 2; the long frame position of the photovoltaic panel 4 is fixedly installed on the water trough purlin 2 from the bottom side, and the auxiliary water trough 3 is arranged below the short frame gap of the photovoltaic panel 4.

[0061] The water tank purlin 2 is bent into a U-shaped strip structure, and the end of the water tank purlin 2 is connected to the water tank main beam 1.

[0062] Purlin reinforcement plates 5 are installed at the two edges of the upper side of the water tank purlin 2 by screws, and two raised parts 6 are bent on the purlin reinforcement plate 5. A U-shaped recessed position 7 is formed between the middle part of the purlin reinforcement plate 5 and the two raised parts 6. Fixed pressing fasteners 8 are installed at both ends of the upper side of the purlin reinforcement plate 5, and raised edges 9 are bent on the fixed pressing fasteners 8. The raised edges 9 are pressed one by one on the raised parts 6 of the purlin reinforcement plate 5, and the long frame of the photovoltaic panel 4 is installed between the U-shaped recessed position 7 and the fixed pressing fasteners 8.

[0063] It can ensure the stable installation of the photovoltaic panel 4, is suitable for photovoltaic installation with a frame lower flange 19, and can be installed and fixed from the bottom side with high safety.

[0064] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A roof structure of a BIPV photovoltaic building, characterized in that: It includes the main girder of the water tank, the purlin of the water tank, the auxiliary water tank and the photovoltaic panel; The water tank purlin is fixedly installed on the water tank main beam, and the end of the water tank purlin leads to the water tank main beam. The auxiliary water tank is fixedly installed on the water tank purlin from the bottom side, and the end of the auxiliary water tank leads to the water tank purlin. The long frame of the photovoltaic panel is fixedly installed on the water tank purlin from the bottom side, and the auxiliary water tank is arranged below the gap of the short frame of the photovoltaic panel.

2. The roof structure of a BIPV photovoltaic building according to claim 1, characterized in that: The water tank purlin is bent into a double U-shaped strip structure. The water tank purlin adopts a wide flange cross-section structure with equal upper and lower overall widths. An n-shaped raised edge is formed in the middle of the upper side of the water tank purlin. The long frame position of the photovoltaic panel is fixedly installed on the n-shaped raised edge of the water tank purlin from the bottom side.

3. The roof structure of a BIPV photovoltaic building according to claim 1, characterized in that: The water tank purlin is bent into a U-shaped strip structure, and the end of the water tank purlin leads to the water tank main beam.

4. The roof structure of a BIPV photovoltaic building according to claim 3 is characterized in that: Purlin reinforcement plates are installed at the two edges of the upper side of the water tank purlin by screws, and two raised parts are bent on the purlin reinforcement plate, and a U-shaped recessed position is formed between the middle part of the purlin reinforcement plate and the two raised parts. Fixed pressing fasteners are installed at both ends of the upper side of the purlin reinforcement plate, and raised edges are bent on the fixed pressing fasteners. The raised edges are pressed one by one on the raised parts of the purlin reinforcement plate, and the long frame of the photovoltaic panel is installed between the U-shaped recessed position and the fixed pressing fasteners.

5. A BIPV photovoltaic building roof structure according to any one of claims 2 or 3, characterized in that: Both ends of the water tank purlin are formed with water guiding oblique openings, which are bent downwards, and the ends of the water tank purlins are connected to the water tank main beam through the water guiding oblique openings.

6. A BIPV photovoltaic building roof structure according to any one of claims 1 to 4, characterized in that: A plurality of photovoltaic panels are provided, and a rubber strip is provided in the gap between two adjacent photovoltaic panels.

7. The roof structure of a BIPV photovoltaic building according to claim 6, characterized in that: The cross section of the rubber strip is in a T-shaped or π-shaped structure.

8. The roof structure of a BIPV photovoltaic building according to claim 1, characterized in that: A plurality of support columns are fixedly installed on the bottom side of the water tank main beam.

9. The roof structure of a BIPV photovoltaic building according to claim 8, characterized in that: The supporting columns are gradually shortened from the middle position of the roof structure to the edges on both sides, so that the photovoltaic panels form two planes inclined to the left and right, and the inclination angle of the main beam of the water tank is set to be the same as the inclined plane of the photovoltaic panels.

10. The roof structure of a BIPV photovoltaic building according to claim 1, characterized in that: Both ends of the water trough main beam are provided with water ditches, the water ditches and the water trough main beam are arranged perpendicular to each other, and the outer end of the water trough main beam leads to the water ditches.

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