Multi-stage waterproof structure for photovoltaic panel

Abstract

The utility model relates to a multi-stage waterproof structure for a photovoltaic panel. The multi-stage waterproof structure comprises a main water guide purline, a clamping frame and a cover plate. The main water guide purline comprises a supporting batten and a water guide groove with a U-shaped section; the clamping frames are symmetrically arranged on the two sides of the butt joint of the photovoltaic panels and comprise edge wrapping frames and water guide plates, the edges of the photovoltaic panels are wrapped with the edge wrapping frames, the bottom ends of the edge wrapping frames abut against the supporting strip plates in a contact mode, and the water guide plates are arranged in the water guide grooves; the cover plate is detachably connected with the supporting strip plate, presses the top end of the edge wrapping frame and covers the gap. According to the utility model, through the cooperation of the edge wrapping frame, the cover plate and the water guiding groove, multiple seals are formed and seepage water is guided out, and the technical problems that an existing photovoltaic panel sealing structure is not resistant to aging, poor in sealing effect, easy to cause corrosion and water leakage due to rainwater accumulation and the like are solved.

Description

Technical Field

[0001] This utility model relates to the field of solar photovoltaic power generation technology, and more specifically to a multi-level waterproof structure for photovoltaic panels. Background Technology

[0002] In existing technologies, photovoltaic (PV) power generation primarily relies on the photoelectric effect of semiconductors, converting light energy into electrical energy through photovoltaic panels. Currently, PV panels are typically fixed to rooftops or other building structures by brackets, leaving them exposed to the elements for extended periods. During rainy weather, rainwater easily accumulates in the low-lying areas and joints of the PV panels, leading to corrosion of the supporting frame and reducing the lifespan of the PV structure. Furthermore, rainwater seeping from the joints of the PV installation structure's brackets can fall directly onto the roof, potentially causing corrosion at the roof connections and even leading to roof leaks.

[0003] Traditional sealing structures installed at the seams of photovoltaic panels mostly use sealant or cover plates for connection. The sealant ages faster under prolonged sunlight and high temperatures, and is difficult to clean during repairs. When the cover plate is a single seal, rainwater can enter under the photovoltaic panel through the gap between the cover plate and the photovoltaic panel, resulting in poor sealing performance.

[0004] Therefore, how to provide a new multi-level waterproof structure for photovoltaic panels that ensures convenient installation while also providing multiple sealing and water-conducting effects is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a multi-level waterproof structure for photovoltaic panels, which aims to solve the technical problems of the above-mentioned traditional sealing structures being not resistant to aging and having poor sealing effect.

[0006] A multi-level waterproof structure for photovoltaic panels, used to fix and seal the joint between two adjacent photovoltaic panels, includes:

[0007] The main water purlin includes an integrally formed support plate and U-shaped water guide grooves on both sides of the support plate. The support plate is located below the joint of two adjacent photovoltaic panels, and the openings of the water guide grooves on both sides face upward.

[0008] The reinforcement frame consists of two frames, which are symmetrically arranged on both sides of the joint. The reinforcement frame includes an integrally formed frame and a water guide plate. The frame wraps around the edge of the photovoltaic panel, and the bottom end of the frame contacts and abuts against the upper surface of the support strip. The water guide plate is located in the water guide groove.

[0009] The cover plate is detachably connected to the support strip plate. The cover plate covers the gap between the two frame edges, and the cover plate is located on both sides of the butt joint, pressing the top of the two frame edges respectively.

[0010] Through the above technical solution, this utility model wraps the edge of the photovoltaic panel with a frame, and the top of the frame is pressed by a cover plate to achieve the first seal. The photovoltaic panel is in contact with the bottom surface of the frame under the pressure of the cover plate to form the second seal. In addition, a water guide plate is tightly connected to the bottom edge of the frame, which can guide the water that has seeped through the second seal into the water guide channel for discharge. It has the characteristics of double sealing and can collect and discharge the seeping water.

[0011] Preferably, the frame includes a top plate, a vertical plate, and a bottom plate arranged corresponding to the upper surface, side wall surface, and lower surface of the photovoltaic panel. The top plate and the bottom plate are arranged opposite each other. The vertical plate is connected at the end of the top plate and the bottom plate near the joint. The top of the water guide plate is fixedly connected to the end of the bottom plate away from the joint. The two sides of the cover plate press against the upper surfaces of the two top plates respectively.

[0012] Preferably, it also includes a sealing rubber tube, and the frame also includes a corrugated plate extending along one end of the top plate away from the vertical plate, with the sealing rubber tube pressed between the recess on the lower surface of the corrugated plate and the upper surface of the photovoltaic panel.

[0013] Preferably, the frame also includes an elastic connecting part located between the top plate and the vertical plate.

[0014] Preferably, the cover plate includes a cover plate body and pressure plates. The cover plate body is detachably connected to the support strip plate. Two pressure plates are symmetrically arranged on both sides of the cover plate body. The bottom end of the pressure plate contacts and abuts against the recess on the upper surface of the corrugated plate.

[0015] Preferably, it also includes a locking screw, and the upper surface of the cover plate body has a screw through hole, through which the locking screw is detachably connected to the upper surface of the support plate.

[0016] Preferably, a circular boss is provided on the upper surface of the cover plate body at the position corresponding to the screw through hole.

[0017] Preferably, it also includes a nut, which is fixedly connected to the upper surface of the support plate and arranged opposite to the screw through hole, and the locking screw passes through the screw through hole and is screwed to the nut.

[0018] Preferably, it also includes a sealing strip, which is fastened to the surface of the vertical plate along the length of the vertical plate and is sealed and pressed between the opposite surfaces of the vertical plate and the photovoltaic panel.

[0019] Preferably, the sealing strip is made of rubber.

[0020] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a multi-level waterproof structure for photovoltaic panels, which has the following beneficial effects: the water guide groove of the main purlin can effectively guide water flow and prevent rainwater from accumulating at the joints of the photovoltaic panels; the frame of the reinforcing frame wraps around the edge of the photovoltaic panel, playing a preliminary sealing role; the cover plate further presses the frame and covers the gap, enhancing the sealing performance. This structure not only achieves the fixing and sealing of the joints of the photovoltaic panels, but also has good waterproof performance, which can effectively prevent rainwater from seeping in, thereby avoiding problems such as corrosion of the support frame and roof leakage caused by rainwater accumulation, extending the service life of the photovoltaic structure, and improving its reliability and stability. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of a multi-level waterproof structure for photovoltaic panels provided by this utility model;

[0022] Figure 2 A schematic cross-sectional view of the main purlin provided by this utility model;

[0023] Figure 3 A cross-sectional schematic diagram of the reinforcing frame provided by this utility model;

[0024] Figure 4 A partial cross-sectional view of a multi-level waterproof structure for photovoltaic panels provided by this utility model;

[0025] Figure 5 for Figure 4 A magnified view of a section at point A;

[0026] Figure 6 A partial sectional view of the cover plate provided by this utility model;

[0027] Figure 7 for Figure 6 A magnified view of section B.

[0028] The components are: 1-Main purlin strip; 2-Reinforcing frame; 3-Cover plate; 4-Sealing rubber tube; 5-Locking screw; 6-Nut; 7-Sealing strip; 10-Photovoltaic panel; 11-Supporting strip; 12-Water guide channel; 20-Frame; 21-Water guide plate; 22-Wave plate; 23-Elastic connection part; 24-Top plate; 25-Upright plate; 26-Bottom plate; 30-Cover plate body; 31-Pressure plate; 32-Screw through hole; 33-Circular boss. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] See appendix Figure 1-7This utility model discloses a multi-level waterproof structure for photovoltaic panels, used to fix and seal the joint between two adjacent photovoltaic panels 10, including: a main water purlin strip 1, a reinforcing frame 2, and a cover plate 3;

[0031] The main water purlin 1 includes an integrally formed support strip 11 and U-shaped water guide grooves 12 located on both sides of the support strip 11. The support strip 11 is located below the joint of two adjacent photovoltaic panels 10, and the openings of the water guide grooves 12 on both sides face upward.

[0032] There are two supporting frames 2, which are symmetrically arranged on both sides of the joint. The supporting frame 2 includes an integrally formed frame 20 and a water guide plate 21. The frame 20 wraps around the edge of the photovoltaic panel 10, and the bottom end of the frame 20 contacts and abuts against the upper surface of the support strip 11. The water guide plate 21 is located in the water guide groove 12.

[0033] The cover plate 3 is detachably connected to the support strip plate 11. The cover plate 3 covers the gap between the two frame edges 20, and the cover plate 3 is located on both sides of the butt joint and presses the top of the two frame edges 20 respectively.

[0034] In some embodiments, the frame 20 includes a top plate 24, a vertical plate 25, and a bottom plate 26 arranged corresponding to the upper surface, side wall surface, and lower surface of the photovoltaic panel 10. The top plate 24 and the bottom plate 26 are arranged opposite to each other. The vertical plate 25 is connected to the end of the top plate 24 and the bottom plate 26 near the joint. The top end of the water guide plate 21 is fixedly connected to the end of the bottom plate 26 away from the joint. The two side edges of the cover plate 3 press against the upper surfaces of the two top plates 24 respectively.

[0035] In other embodiments, a sealing rubber tube 4 is also included, and the frame 20 further includes a corrugated plate 22 extending along one end of the top plate 24 away from the vertical plate 25. The sealing rubber tube 4 is pressed between a recess on the lower surface of the corrugated plate 22 and the upper surface of the photovoltaic panel 10. Thus, the design of adding the sealing rubber tube 4 and the corrugated plate 22, with the sealing rubber tube 4 elastically sealing between the recess on the lower surface of the corrugated plate 22 and the upper surface of the photovoltaic panel 10, forms an additional sealing layer. This further enhances the sealing performance between the photovoltaic panel 10 and the frame 20, effectively preventing rainwater from seeping in at the contact point between the photovoltaic panel 10 and the frame 20.

[0036] Specifically, the corrugated plate includes two recessed areas and a protrusion located in the middle of the two recessed areas. The sealing rubber tube 4 is arranged below the protrusion and is limited by the recessed areas on both sides.

[0037] In other embodiments, the frame 20 further includes an elastic connecting portion 23 located between the top plate 24 and the vertical plate 25. Thus, the elastic connecting portion 23 connects the top plate 24 and the vertical plate 25, giving the top plate 24 a certain degree of elasticity. This elastic design can better adapt to changes in the shape and size of the photovoltaic panel 10, improving the fit between the top plate 24 and the photovoltaic panel 10, thereby further enhancing the sealing performance. Simultaneously, during installation, the elastic connecting portion 23 provides a certain buffering effect, preventing damage to the photovoltaic panel 10 due to improper installation, thus improving the convenience and reliability of installation.

[0038] In one embodiment, the cover plate 3 includes a cover plate body 30 and a pressure plate 31. The cover plate body 30 is detachably connected to the support strip 11. The two pressure plates 31 are symmetrically arranged on both sides of the cover plate body 30. The bottom end of the pressure plate 31 contacts and abuts against the recess on the upper surface of the corrugated plate 22.

[0039] Specifically, the pressure plate 31 contacts and abuts against the upper surface of the recessed area located away from the joint seam, thereby forming a seal between the cover plate 3 and the supporting frame 2 through the above structure. Water that has permeated through the above seal can also be discharged through the recessed area near the joint seam.

[0040] In one embodiment, a locking screw 5 is also included. A screw through hole 32 is provided on the upper surface of the cover plate body 30. The locking screw 5 passes through the screw through hole 32 and is detachably connected to the upper surface of the support strip plate 11.

[0041] In some embodiments, a circular boss 33 is provided on the upper surface of the cover plate body 30 at the position corresponding to the screw through hole 32. As a result, the circular boss 33 increases the relative height between the screw through hole 32 and the upper surface of the cover plate body 30, making it less likely for the cover plate body 30 to seep into the screw through hole 32.

[0042] In some specific embodiments, a nut 6 is also included. The nut 6 is fixedly connected to the upper surface of the support plate 11 and is arranged opposite to the screw through hole 32. The locking screw 5 passes through the screw through hole 32 and is screwed to the nut 6.

[0043] In some other embodiments, a sealing strip 7 is also included. The sealing strip 7 is fastened to the surface of the upright plate 25 along its length and is pressed tightly between the opposing surfaces of the upright plate 25 and the photovoltaic panel 10. Thus, the sealing strip 7 is fastened to the surface of the upright plate 25 along its length and elastically seals between the surface of the upright plate 25 and the sidewall of the photovoltaic panel, forming an additional sealing layer. This further enhances the sealing performance between the frame and the photovoltaic panel, effectively preventing rainwater from seeping in from the sidewall.

[0044] In some other embodiments, the sealing strip 7 is made of rubber.

[0045] Specifically, the connection between the sealing strip 7 and the side wall of the supporting frame 2 is by bonding.

[0046] The specific principle of the multi-level waterproof structure for photovoltaic panels provided in this embodiment is as follows:

[0047] The first layer of sealing involves a sealing rubber tube 4 placed between the recessed area on the lower surface of the corrugated plate 22 of the frame 20 and the upper surface of the photovoltaic panel 10. The sealing rubber tube 4, through its own elastic deformation, fits tightly between the corrugated plate 22 and the photovoltaic panel 10, further enhancing the effect of the first layer of sealing and preventing rainwater from seeping in from the contact point between the photovoltaic panel 10 and the corrugated plate 22.

[0048] The second seal is formed by the frame 20 of the reinforcing frame 2 wrapping around the edge of the photovoltaic panel 10, with its bottom end contacting and abutting against the upper surface of the base plate 26. This contact and abutting forms a second sealing layer, further preventing rainwater from seeping in from the edge of the photovoltaic panel 10.

[0049] The third seal is achieved by a sealing strip 7 between the surface of the vertical plate 25 and the side wall of the photovoltaic panel 10. The sealing strip 7 is arranged along the length of the vertical plate 25 and, through its elastic sealing effect, further enhances the sealing performance of the frame 2. This sealing layer can effectively prevent rainwater from seeping in between the side wall of the photovoltaic panel 10 and the surface of the vertical plate 25, further improving the sealing performance of the entire waterproof structure.

[0050] When rainwater breaks through the first, second, and third seals and seeps into the main water purlin 1, the water guide trough 12 can collect the seeping water and guide it to the edge of the photovoltaic panel 10 or a designated drainage location through its U-shaped structure, thereby preventing rainwater from accumulating in the low-lying areas or joints of the photovoltaic panel 10.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-stage waterproof structure for photovoltaic panels, for fixing and sealing the joint between two adjacent photovoltaic panels (10), characterized in that, include: The main water purlin (1) includes an integrally formed support strip (11) and U-shaped water guide grooves (12) located on both sides of the support strip (11). The support strip (11) is located below the joint of two adjacent photovoltaic panels (10), and the openings of the water guide grooves (12) on both sides face upward. The reinforcement frame (2) consists of two frames, which are symmetrically arranged on both sides of the joint. The reinforcement frame (2) includes an integrally formed frame (20) and a water guide plate (21). The frame (20) wraps around the edge of the photovoltaic panel (10), and the bottom end of the frame (20) contacts and abuts against the upper surface of the support strip (11). The water guide plate (21) is located inside the water guide groove (12). Cover plate (3), which is detachably connected to the support strip plate (11), covers the gap between the two frame edges (20), and the cover plate (3) presses the top of the two frame edges (20) on both sides of the butt joint.

2. The multi-stage waterproof structure for a photovoltaic panel according to claim 1, wherein The frame (20) includes a top plate (24), a vertical plate (25), and a bottom plate (26) arranged corresponding to the upper surface, side wall surface, and lower surface of the photovoltaic panel (10). The top plate (24) and the bottom plate (26) are arranged opposite to each other. The vertical plate (25) is connected to the end of the top plate (24) and the bottom plate (26) near the joint. The top of the water guide plate (21) is fixedly connected to the end of the bottom plate (26) away from the joint. The two sides of the cover plate (3) press against the upper surfaces of the two top plates (24).

3. The multi-stage waterproof structure for a photovoltaic panel according to claim 2, characterized by, It also includes a sealing rubber tube (4), and the frame (20) also includes a corrugated plate (22) extending along one end of the top plate (24) away from the vertical plate (25), and the sealing rubber tube (4) is pressed between the recess on the lower surface of the corrugated plate (22) and the upper surface of the photovoltaic panel (10).

4. The multi-stage waterproof structure for a photovoltaic panel according to claim 2, characterized by, The frame (20) also includes an elastic connecting part (23) located between the top plate (24) and the vertical plate (25).

5. The multi-stage waterproof structure for a photovoltaic panel according to claim 3, characterized by, The cover plate (3) includes a cover plate body (30) and a pressure plate (31). The cover plate body (30) is detachably connected to the support strip (11). The two pressure plates (31) are symmetrically arranged on both sides of the cover plate body (30). The bottom end of the pressure plate (31) contacts and abuts against the recess on the upper surface of the wave plate (22).

6. The multi-stage waterproof structure for a photovoltaic panel according to claim 5, wherein It also includes a locking screw (5), and a screw through hole (32) is provided on the upper surface of the cover plate body (30). The locking screw (5) passes through the screw through hole (32) and is detachably connected to the upper surface of the support strip plate (11).

7. The multi-stage waterproof structure for a photovoltaic panel according to claim 6, characterized by, The upper surface of the cover plate body (30) is provided with a circular boss (33) at the position corresponding to the screw through hole (32).

8. The multi-stage waterproof structure for a photovoltaic panel according to claim 6, wherein It also includes a nut (6), which is fixedly connected to the upper surface of the support plate (11) and is arranged opposite to the screw through hole (32). The locking screw (5) passes through the screw through hole (32) and is screwed to the nut (6).

9. The multi-stage waterproof structure for a photovoltaic panel according to claim 2, wherein It also includes a sealing strip (7), which is fastened to the surface of the vertical plate (25) along the length direction of the vertical plate (25) and is sealed and pressed between the opposite surfaces of the vertical plate (25) and the photovoltaic panel (10).

10. The multi-stage waterproof structure for a photovoltaic panel according to claim 9, wherein The sealing strip (7) is made of rubber.

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