Roof photovoltaic system installation device

Abstract

The invention provides a roof photovoltaic system installation device, and belongs to the technical field of building integrated photovoltaic (BIPV). A connecting piece is connected with a bottom beam through a supporting piece to install a photovoltaic support, a photovoltaic panel is installed through the photovoltaic support, the supporting piece is installed on a column piece, and a fixed base plate is arranged on a roof. A plurality of fixing pieces penetrate through the fixing base plate and penetrate into the roof in an interference mode, so that fixing and sealing of the connecting pieces on the roof are achieved; the flexible waterproof coiled material is arranged on the column body part in a sleeving mode, the inner surface of the waterproof layer and the surface of the roof are sealed through the hot melting bonding face of the flexible waterproof coiled material, meanwhile, the installation device is suitable for the situation that the outer surface of the waterproof layer on the roof is aged, the damage degree and the water leakage performance of the plant roof are reduced, and the waterproof performance of the plant roof is improved; and the construction technology and the production quality and safety in a plant are guaranteed, and the method has wide applicability.

Description

Technical Field

[0001] This application belongs to the technical field of building integrated photovoltaics (BIPV), and particularly relates to an installation device for a rooftop photovoltaic system. More specifically, it particularly relates to an installation device for photovoltaic panels on the rooftops of industrial factories. Background Art

[0002] In the related art, when installing a photovoltaic power generation system on a factory building roof, the connection between the photovoltaic panel support and the original roof is mainly achieved through a support member connected to the roof. First, after drilling a perforation through the roof on the factory building roof, the support member is connected to the roof purlin through bolts passing through the perforation to realize the connection between the photovoltaic panel support and the factory building roof.

[0003] However, drilling perforations and installing bolts on the factory building roof can easily cause serious damage to the factory building roof. Rainwater or accumulated water on the roof falls into the factory building through the perforations, resulting in poor waterproof performance of the factory building roof and affecting the construction process and production inside the factory building.

[0004] Based on this, a new technical solution is needed. Summary of the Invention

[0005] In view of this, this application provides an installation device for a rooftop photovoltaic system.

[0006] This application provides the following technical solutions:

[0007] An installation device for a rooftop photovoltaic system according to this application includes a bottom beam, a support member, and a connecting member; the bottom beam is used for installing a photovoltaic support, the photovoltaic support is used for installing photovoltaic panels of the photovoltaic system, and the support member is installed under the bottom beam; the connecting member includes a fixed base plate, a column member, and a plurality of fixing members. The support member is installed on the column member, the column member is fixed on the fixed base plate, the fixed base plate is placed on the roof, and the plurality of fixing members pass through the fixed base plate and press-fit into the roof to achieve the fixed sealing of the connecting member on the roof.

[0008] Preferably, a waterproof layer is laid on the roof; the connecting member further includes a first clip, a second clip, and a flexible waterproof roll. The first clip and the second clip are fixedly sleeved on the column member, the inner ring of the flexible waterproof roll is sleeved on the column member, and the inner ring area of the flexible waterproof roll is sealed and clamped between the first clip and the second clip;

[0009] A fixing groove is opened through the waterproof layer on the roof, the fixed base plate is placed in the installation groove, and the second clip extends to the notch of the fixing groove and is flush with the notch of the fixing groove, so that the outer ring area of the flexible waterproof roll is clamped between the waterproof layer and the roof;

[0010] The upper and lower surfaces of the flexible waterproof coiled material are formed with hot-melt bonding surfaces, so that the hot-melt bonding surface on the upper surface seals the inner surface of the waterproof layer, and the hot-melt bonding surface on the lower surface seals the surface of the roof to achieve seamless sealing.

[0011] Preferably, the column member includes the connecting column and the fixing column. The first clip and the second clip are fixedly sleeved on the connecting column, and the fixing column is fixed on the fixed substrate. The connecting column is installed on the fixing column in a liftable manner, so that the second clip adapts to the depth of the fixing groove through lifting to keep the flexible waterproof coiled material on the surface of the roof.

[0012] Preferably, the fixing column is provided with threads on the outside, and the connecting column is provided with threaded holes, so that while the fixing column and the connecting column are connected by threads to achieve lifting, a split connection between the connecting column and the fixing column is realized, which is convenient for the installation of the connecting piece on the roof.

[0013] Preferably, the surfaces of the fixing column and the connecting column are hardened to precisely adjust the height of the threaded lift and adapt to the thickness of the roof.

[0014] Preferably, a heat bridge blocking structure is provided inside the connecting column to block the heat from the outside from being transferred to the roof through the connecting column to prevent the roof from cracking.

[0015] Preferably, a plurality of support members are provided under the bottom beam, and a water leakage detector is further installed outside the connecting column. A sealed chamber is formed between the flexible waterproof coiled material and the fixing groove, so that the water leakage detector determines whether there is water leakage at the sealed chamber by detecting the air pressure in the sealed chamber.

[0016] Preferably, the photovoltaic bracket corresponds to two bottom beams. The support member includes a support rod and upper and lower support pieces arranged at both ends of the support rod. The lower support piece is quickly installed and connected to the connecting column through a lower fastener, and the upper support piece is quickly installed and connected to the bottom beam through an upper fastener, so as to facilitate setting the height difference between the two bottom beams according to the tilt angle requirement of the photovoltaic panel.

[0017] Preferably, the roof includes purlins and a heat preservation layer arranged on the purlins. The fixing member is a self-tapping screw, and the self-tapping screw passes through the fixed substrate and is threadedly connected to the heat preservation layer and the purlins to realize that the fixing member penetrates into the roof with interference.

[0018] Preferably, the photovoltaic bracket is a waterproof bracket composed of W-shaped or M-shaped grooved rods, and a diversion groove is provided at the bottom of the waterproof bracket to facilitate draining the accumulated water to the drainage groove of the roof.

[0019] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in this application at least include:

[0020] 1. The connecting piece of this application installs the photovoltaic support by connecting the bottom beam through the support piece, installs the photovoltaic panel through the photovoltaic support, installs the support piece on the column piece, places the fixing substrate on the roof, and a plurality of fixing pieces pass through the fixing substrate and press-fit into the roof to achieve the fixed sealing of the connecting piece on the roof, reducing the damage degree and water leakage of the factory building roof, improving the waterproof performance of the factory building roof, and ensuring the quality and safety of the construction process and production in the factory building;

[0021] 2. This application fixes the fixing substrate in the fixing groove opened on the roof, sleeved with a flexible waterproof coiled material on the column piece, and seals and clamps the inner ring area of the flexible waterproof coiled material through the first clip and the second clip. The second clip extends to the notch of the fixing groove and is flush with the notch, which can support and keep the flexible waterproof coiled material flat. Furthermore, the outer ring area of the flexible waterproof coiled material is clamped between the waterproof layer and the roof. The inner surface of the waterproof layer and the surface of the roof are sealed respectively through the hot melt bonding surface of the flexible waterproof coiled material. The second clip can block the fixing groove and continuously maintain the supporting effect on the flexible waterproof coiled material sealed on the roof. The waterproof performance of the factory building roof can be improved through this installation device, and the quality and safety of the construction process and production in the factory building are ensured; in addition, the upper surface of the flexible waterproof coiled material has a hot melt bonding surface to seal the inner surface of the waterproof layer, and it is also applicable to the situation when the outer surface of the waterproof layer on the roof ages. This installation device has wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of this application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is the connection schematic diagram of the roof and the installation device in this application;

[0024] Figure 2 is the top view of the installation of the roof photovoltaic system in this application;

[0025] Figure 3 is Figure 2 the front view of the A-A cross-section in

[0026] Figure 4 is Figure 2 the side view of the B-B cross-section in

[0027] Reference numerals: 1, photovoltaic support; 2, bottom beam; 3, support member; 4, upper fastener; 5, lower fastener; 6, waterproof layer; 7, thermal insulation layer; 8, purlin; 9, connecting column; 10, flexible waterproof coiled material; 11, first clip; 12, second clip; 13, fixed column; 14, fixed base plate; 15, fixing member; 16, reinforcing plate; 17, photovoltaic module; 18, transverse water guide groove; 19, walkway plate; 20, M-shaped water trough; 21, pressing block; 22, hexagon socket head bolt; 23, self-drilling screw; 24, waterproof cover plate; 25, installation cover plate. Detailed implementation manners

[0028] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0029] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0030] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or this method can be implemented using other structures and / or functionality in addition to one or more of the aspects described herein.

[0031] It should also be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The drawings only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0032] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0033] Through in-depth research and improvement exploration of the installation of the photovoltaic power generation system, the applicant found that: in the prior art, it is necessary to perforate the original roof and connect it to the purlin with bolts, and now holes are opened on the roof, which causes damage to the roof and debris falls into the room during hole opening, affecting the production in the factory building; the construction process is difficult to control on site, which will cause the risk of overall leakage of the factory building.

[0034] Based on this, the following will describe the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

[0035] The embodiment of this specification proposes a photovoltaic panel installation device for the roof of an industrial factory building, which is particularly suitable for a roof structure with an aging flexible waterproof layer 6. As Figure 1 、 Figure 2 and Figure 3 shown, it includes a bottom beam 2, a support member 3 and a connecting member; a photovoltaic bracket 1 is installed on the bottom beam 2, and the photovoltaic bracket 1 is used to install the photovoltaic panels of the photovoltaic system. The support member 3 is installed under the bottom beam 2; the connecting member includes a fixed base plate 14, a column member and a plurality of fixing members 15. The support member 3 is installed on the column member, the column member is fixed on the fixed base plate 14, the fixed base plate 14 is placed on the roof, and a plurality of fixing members 15 pass through the fixed base plate 14 and are press-fitted into the roof to realize the fixed sealing of the connecting member on the roof. The photovoltaic panel is a photovoltaic module 17 of the photovoltaic system. The fixed base plate 14 is a circular steel plate with a diameter of 200 mm and a thickness of 5 mm; the fixing members 15 are arranged in an annular distribution, for example, there are four. The bottom beam 2 is made of steel structure, using Q355B material, and the cross-sectional dimensions are 80 mm×40 mm×4 mm. The photovoltaic bracket 1 and the bottom beam 2 can be connected by high-strength self-tapping screws.

[0036] In one embodiment, as Figure 1 shown, a waterproof layer 6 is laid on the roof; the connecting member further includes a first clip 11, a second clip 12 and a flexible waterproof coil 10. The first clip 11 and the second clip 12 are fixedly sleeved on the column member, the inner ring of the flexible waterproof coil 10 is sleeved on the column member, and the inner ring area of the flexible waterproof coil 10 is hermetically clamped between the first clip 11 and the second clip 12. A fixing groove is opened on the roof through the waterproof layer 6, the fixed base plate 14 is placed in the installation groove, and the second clip 12 extends to the notch of the fixing groove and is flush with the notch of the fixing groove, so that the outer ring area of the flexible waterproof coil 10 is clamped between the waterproof layer 6 and the roof. The upper surface and the lower surface of the flexible waterproof coil 10 are formed with hot-melt bonding surfaces, so that the hot-melt bonding surface on the upper surface seals the inner surface of the waterproof layer 6, and the hot-melt bonding surface on the lower surface seals the surface of the roof to achieve seamless sealing.

[0037] Among them, the flexible waterproof coiled material 10 is a sheet-shaped waterproof coiled material. The flexible waterproof coiled material 10 is welded to the first clip 11 and the second clip 12 respectively to form a seamless seal. The fixing groove is a circular through-hole with a diameter of 120 - 200 mm, for example, 150 mm, and the depth is 80% of the total thickness of the insulation layer 7 and the purlin 8. The flexible waterproof coiled material 10 is made of TPO (Thermoplastic polyolefin) or PVC (Polyvinyl chloride), with a thickness of 2.0 - 3.0 mm and has UV-C protection. The waterproof layer 6 also uses waterproof coiled material. Hot melt temperature: for TPO coiled material is 180 - 200 °C, for PVC coiled material is 160 - 180 °C. Welding strength: ≥1.5 KN / 50 mm (ASTM D638 standard); use a constant temperature hot air welding gun (temperature error ±5 °C), welding pressure 0.2 - 0.3 MPa to ensure uniform fusion of the hot melt surface; it is prohibited to carry out hot melt operation in rainy days or environments with humidity > 80% to prevent the bonding surface from failing.

[0038] In one embodiment, if it is unable to adapt to fixing grooves of different depths, it will cause the coiled material not to fit tightly with the roof. As Figure 1 shown, the column member includes a connecting column 9 and a fixing column 13. The first clip 11 and the second clip 12 are fixedly sleeved on the connecting column 9, and the fixing column 13 is fixed on the fixing substrate 14; the connecting column 9 is installed on the fixing column 13 in a liftable manner so that the second clip 12 can adapt to the depth of the fixing groove through lifting, and keep the flexible waterproof coiled material 10 on the surface of the roof.

[0039] In one embodiment, as Figure 1 shown, the fixing column 13 is provided with external threads, and the connecting column 9 is provided with threaded holes, so that while the fixing column 13 and the connecting column 9 are connected by threads to achieve lifting, a split connection between the connecting column 9 and the fixing column 13 is realized, which is convenient for the installation of the connecting piece on the roof. The thread specification of the connecting column 9 and the fixing column 13 is M20, and the lifting adjustment range is 0 - 50 mm. If the thickness of the roof insulation layer 7 exceeds 50 mm, a lengthened fixing column 13 (length can be customized) needs to be used to ensure effective thread connection bite.

[0040] In one embodiment, as Figure 1 shown, the surfaces of the fixing column 13 and the connecting column 9 are hardened to accurately adjust the thread lifting height to adapt to the roof thickness. Among them, the connecting column 9 is a hollow stainless steel pipe with an outer diameter of 25 mm and a wall thickness of 5 mm, and the surface is alloyed. The thread surface is hardened (galvanized or nitrided), and the minimum adjustment unit of the thread lifting connection is 1 mm, which adapts to the roof thickness tolerance of ±5 mm.

[0041] In one embodiment, due to the lack of blocking of the thermal bridge effect, it is easy to cause roof cracking after long-term use. AsFigure 1 As shown, a heat bridge blocking structure is provided inside the connecting column 9 to block the transfer of external heat through the connecting column 9 to the roof and prevent the roof from cracking. Among them, the heat bridge blocking structure is a composite filling material (polyurethane + fiberglass reinforced layer) filling layer with a density ≥ 40 kg / m3 and a thermal conductivity ≤ 0.025 W / (m·K).

[0042] In one embodiment, as Figure 1 shown, a plurality of support members 3 are provided under the bottom beam 2, and a water leakage detector is also installed outside the connecting column 9. The flexible waterproof coiled material 10 and the fixed groove form a sealed chamber, so that the water leakage detector determines whether there is water leakage at the sealed chamber by detecting the air pressure in the sealed chamber. Among them, the water leakage detector is a combination of a pressure sensor and a humidity sensor for double verification. The initial air pressure of the sealed chamber is 1 standard atmospheric pressure, and an alarm is triggered when the air pressure in the sealed chamber drops by more than 10%. The water leakage alarm threshold is that the air pressure drop ≥ 10% lasts for 10 seconds.

[0043] In one embodiment, as Figure 1 shown, the photovoltaic support 1 corresponds to two bottom beams 2; the support member 3 includes a support rod and upper and lower support pieces provided at both ends of the support rod. The lower support piece is quickly installed and connected to the connecting column 9 through a lower fastener 5, and the upper support piece is quickly installed and connected to the bottom beam 2 through an upper fastener 4, so as to facilitate setting the height difference between the two bottom beams 2 according to the inclination angle requirements of the photovoltaic panel.

[0044] The upper fastener 4 uses a hexagonal bolt and a square nut in cooperation. There is a flat washer between the hexagonal bolt and the upper support piece, and an elastic washer between the square nut and the upper support piece. The lower fastener 5 uses a hexagonal head bolt. The support member 3 serves as a lifting member and is made of Q235B. A reinforcing plate 16 is also provided on the support rod between the upper support piece and the lower support piece.

[0045] In one embodiment, as Figure 1 shown, the roof includes purlins 8 and a thermal insulation layer 7 provided on the purlins 8; the fixing member 15 is a self-tapping screw, and the self-tapping screw passes through the fixing substrate 14 and is threadedly connected to the thermal insulation layer 7 and the purlins 8 to realize that the fixing member 15 is press-fitted into the roof to prevent the roof from leaking. The self-tapping thread is a high-strength self-tapping screw.

[0046] The tensile strength in the related art is only 0.8 KN, which cannot meet the stability requirements of the photovoltaic system in strong wind or typhoon environments. In this application, a long high-strength self-tapping screw passes through the fixing substrate 14 and is threadedly connected to the thermal insulation layer 7 and the purlins 8 to strengthen the fixing force of the connecting member while preventing the roof from leaking. The tensile strength can reach 1.5 KN to 3.5 KN, effectively resisting wind loads. In addition to using long high-strength self-tapping screws to connect the fixing substrate 14 and the purlins 8, high-strength bolts can also be used for connection.

[0047] In one embodiment, asFigure 2 , Figure 3 and Figure 4 As shown in Figure 2 and Figure 2 , the photovoltaic support 1 is a waterproof support composed of W-shaped or M-shaped trough-shaped rods. For example, the M-shaped water trough 20 in Figure 2 . A diversion groove is provided at the bottom of the waterproof support. For example, the transverse water diversion groove 18 in Figure 2 is used to drain the accumulated water to the drain trough on the roof. Among them, a diversion groove is provided at the bottom of the W / M-shaped support, and the width of the groove is 1.2 to 1.5 times the width of the drain trough to ensure that there is no stagnant water. The trough-shaped rod is installed parallel to the roof surface at an inclination angle of 3° to 5°, and is directly docked with the roof drain trough. A walkway board 19 is also provided on the roof.

[0048] An installation cover plate 25 and a pressing block 21 for installing the photovoltaic module 17 are provided on the photovoltaic support 1. The installation cover plate 25 covers the M-shaped water trough 20. The two sides of the M-shaped water trough 20 extend out the support feet and are connected to the bottom beam 2 by self-drilling screws 23. The two sides of the installation cover plate 25 are also connected to the two side walls of the M-shaped water trough 20 by self-drilling screws 23. The self-drilling screws 23 are M6.3×25mm.

[0049] A photovoltaic module 17 is installed between adjacent installation cover plates 25. An installation cover plate 25 and a pressing block 21 are shared between adjacent photovoltaic modules 17. The photovoltaic module 17 is arranged on the installation cover plate 25. The pressing block 21 is in the shape of a cylinder with a bottom. The outer periphery of the mouth of the pressing block 21 extends out the support feet ring and presses adjacent photovoltaic modules 17 respectively. The bottom of the cylinder of the pressing block 21 and the installation cover plate 25 are connected by an internal hexagonal bolt 22 to clamp the photovoltaic module 17 through the installation cover plate 25 and the pressing block 21. The internal hexagonal bolt 22 is M8, and an elastic gasket is contained between the internal hexagonal bolt 22 and the bottom of the cylinder of the pressing block 21. A waterproof cover plate 24 similar in shape to the pressing block 21 is contained at the mouth of the pressing block 21 to block the mouth of the pressing block 21.

[0050] In one embodiment, the photovoltaic support 1 is provided with a double daylighting belt to facilitate the daylighting and waterproof requirements of the photovoltaic panel. Glass can also be installed at the position of the daylighting belt. If the daylighting belt has fire protection function requirements, a heat-melting plate can also be installed at the position of the daylighting belt on the plane of the waterproof support to ensure the fire protection function of the original factory building system.

[0051] ​​​​The connecting piece of the present application is installed on the photovoltaic support 1 by connecting the bottom beam 2 through the support piece 3, and the photovoltaic panel is installed through the photovoltaic support 1. The connecting piece is fixed in the fixing groove opened on the roof. By providing the connecting column 9, a flexible waterproof coiled material 10 is sleeved on the connecting column 9, and the inner ring area of the flexible waterproof coiled material 10 is hermetically clamped by the first clip 11 and the second clip 12. The second clip 12 extends to the notch of the fixing groove and is flush with the notch, which can support the flexible waterproof coiled material 10 and keep it flat. Furthermore, the outer ring area of the flexible waterproof coiled material 10 is clamped between the waterproof layer 6 and the roof. The inner surface of the waterproof layer 6 and the surface of the roof are respectively sealed by the hot-melt bonding surface of the flexible waterproof coiled material 10. The fixing groove can be blocked by the second clip 12, and the support effect on the flexible waterproof coiled material 10 sealed on the roof can be continuously maintained. The waterproof property of the factory building roof can be improved through this installation device, ensuring the quality and safety of the construction process and production in the factory building.

[0052] The traditional installation method needs to penetrate the waterproof layer 6, resulting in a risk of water leakage. Especially after the waterproof layer 6 ages, secondary construction is likely to exacerbate the damage. After 2 - 3 years, the outer surface of the PVC or TPO coiled material roof is aged due to wind, sun, etc. The waterproof coiled material surface on the roof is aged, and the inner surface is basically intact. If the connecting piece with the waterproof coiled material is hot-melt connected to the original roof, the coiled material cannot be hot-melt connected to the original roof, resulting in the inability to ensure waterproofing after opening holes at the support positions. The upper surface of the flexible waterproof coiled material 10 has a hot-melt bonding surface to seal the inner surface of the waterproof layer 6, which is applicable to the situation of connecting the PVC or TPO coiled material roof after 2 - 3 years or the roof with relatively serious aging of the roof coiled material to the photovoltaic system. This installation device has wide applicability. While solving the problem of roof waterproofing when installing the photovoltaic system in the present application, the aged coiled material roof can install the photovoltaic system, solving the situation that the outer surface of the PVC or TPO coiled material roof is aged and unable to install the photovoltaic system, or after installing the photovoltaic system, the original factory building cannot be guaranteed not to leak. The connection method of this solution has low cost, light weight, and does not additionally increase the load of the photovoltaic system.

[0053] The present application conducts hole opening and positioning: Use a laser locator to determine the center of the fixing groove, with the hole opening error ≤ 5 mm. A round hole with a diameter of about 150 mm is opened on the roof. After hole opening, debris is cleaned to avoid scratching the inner surface of the waterproof layer 6.

[0054] The present application conducts substrate fixing: Lift the edge of the waterproof layer 6, embed the fixing substrate 14 into the fixing groove, and connect it to the purlin 8 through long high-strength self-tapping screws penetrating the thermal insulation layer 7. Four long high-strength self-tapping screws are used to connect the purlin 8 of the original roof at the lower part. The pre-tightening torque of the long high-strength self-tapping screws (M12×150mm) is 25 N·m, and the final torque is 35 N·m. An EPDM rubber washer is installed on the screw head to prevent the thermal insulation layer 7 from cracking due to stress concentration; adjust the height of the connecting column 9 to make the second clip 12 flush with the notch.

[0055] This application conducts coiled material sealing: Before hot melting, clean the inner surface of the waterproof layer 6 and the roof surface with acetone to ensure no oil stain. The outer surface of the coiled material of the connecting seat is hot melt welded to the inner surface of the original roof coiled material. The hot melt sheet coiled material is hot melt welded to the inner surface of the waterproof layer 6 and the roof surface to form a seamless seal. After hot melting, use a roller to compact it with a pressure of 50 N / m to remove air bubbles. Ensure the waterproof effect of the original roof, and the pull-out test also meets the installation requirements of the photovoltaic system; on this basis, install the photovoltaic with a waterproof bracket for double waterproof protection; at the position of the roof daylighting belt, cover it with glass or FRP (Fibreglass Reinforced Polyester) transparent tiles above, which can effectively ensure waterproofing and also meet the indoor daylighting requirements.

[0056] This application conducts experiments and obtains experimental data: Wind resistance performance: Verified by wind tunnel test, it can resist a 12-level wind (35 m / s) without displacement. Simulate the typhoon working condition (wind speed 42 m / s), and the displacement of the bracket ≤ 3 mm, meeting the ASCE 7-16 standard. Waterproof test: In a simulated heavy rain environment (100 mm / h), there is no leakage in the sealed chamber. Accelerated aging test (1000 times of damp heat cycle), the decline rate of the peel strength of the hot melt bonding surface ≤ 5%.

[0057] This application conducts double composite sealing: Achieve double waterproofing through clip mechanical fixation + hot melt welding, conduct adaptive adjustment: The threaded lifting structure adapts to different roof thicknesses to ensure the flatness of the coiled material, and conduct heat bridge blocking: Fill the connecting column 9 with polyurethane foam, and the thermal conductivity ≤ 0.03 W / (m·K).

[0058] The application scenario expansion of this application: Suitable for the renovation of existing factories, especially for TPO / PVC roofs with aging waterproof layer 6 (≥ 3 years). In areas with drastic temperature differences (-30°C to 70°C), use low-temperature modified TPO coiled material for the hot melt bonding surface (applicable temperature -40°C to 100°C). Compatible with various structures such as flat roofs and pitched roofs, and the tilt angle adaptation range is 0° to 30°.

[0059] The multi-functional integration of this application: The photovoltaic bracket 1 reserves a sensor interface, and can integrate temperature and humidity monitoring modules to realize real-time monitoring of the roof health status.

[0060] The technical comparison table between the solution of this application and the traditional solution is as follows:

[0061] Technical Comparison Table

[0062] Technical indicators Traditional solution Solution of this application Waterproof qualification rate ≤70％ ≥98％ Tensile strength 0.8KN 1.5 - 3.5KN Control of thermal bridge effect None Thermal conductivity ≤ 0.025W / (m·K) Applicable service life of aged roof ≤ 2 years ≥ 5 years

[0063] In this specification, for the same or similar parts among various embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments described later, the description is relatively simple, and for the relevant parts, reference can be made to the partial description of the foregoing embodiments.

[0064] As described above, the foregoing is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rooftop photovoltaic system installation device, characterized in that: It includes a bottom beam, a support member and a connecting member; the bottom beam is used to install a photovoltaic bracket, the photovoltaic bracket is used to install photovoltaic panels of a photovoltaic system, and the support member is installed under the bottom beam; the connecting member includes a fixed base plate, a column member and a plurality of fixing members, the support member is installed on the column member, the column member is fixed on the fixed base plate, the fixed base plate is placed on the roof, and a plurality of fixing members penetrate the fixed base plate into the roof with interference fit to achieve the fixing and sealing of the connecting member on the roof.

2. The rooftop photovoltaic system installation device according to claim 1, characterized in that: The roof is paved with a waterproof layer; the connecting member further comprises a first clamp, a second clamp and a flexible waterproof coiled material, the first clamp and the second clamp are fixedly sleeved on the column member, the inner ring of the flexible waterproof coiled material is sleeved on the column member, and the inner ring area of ​​the flexible waterproof coiled material is sealed and clamped between the first clamp and the second clamp; A fixing groove is opened on the roof through the waterproof layer, the fixing base plate is placed in the installation groove, and the second clip extends to the notch of the fixing groove and is flush with the notch of the fixing groove, so that the outer circle area of ​​the flexible waterproof coiled material is sandwiched between the waterproof layer and the roof; The upper and lower surfaces of the flexible waterproof coiled material are formed with hot melt adhesive surfaces, so that the hot melt adhesive surface of the upper surface seals the inner surface of the waterproof layer, and the hot melt adhesive surface of the lower surface seals the surface of the roof to achieve seamless sealing.

3. The rooftop photovoltaic system installation device according to claim 2, characterized in that: The column member includes the connecting column and the fixing column, the first clip and the second clip are fixedly sleeved on the connecting column, and the fixing column is fixed on the fixing base plate; the connecting column is installed on the fixing column in a liftable manner so that the second clip can adapt to the depth of the fixing groove by lifting and lowering, thereby keeping the flexible waterproof membrane on the surface of the roof.

4. The rooftop photovoltaic system installation device according to claim 3, characterized in that: The fixing column is provided with threads on the outside, and the connecting column is provided with threaded holes, so that the fixing column and the connecting column can be raised and lowered through threaded connection, and the connecting column and the fixing column can be connected in a split manner, which is convenient for the installation of the connecting piece on the roof.

5. The rooftop photovoltaic system installation device according to claim 4, characterized in that: The surfaces of the fixing column and the connecting column are hardened to accurately adjust the thread lifting height to adapt to the thickness of the roof.

6. The rooftop photovoltaic system installation device according to claim 3, characterized in that: A heat bridge blocking structure is provided in the connecting column to prevent external heat from being transferred to the roof through the connecting column to prevent the roof from cracking.

7. The rooftop photovoltaic system installation device according to claim 3, characterized in that: There are multiple supporting members under the bottom beam, and a water leakage detector is installed outside the connecting column. The flexible waterproof membrane and the fixing groove form a sealed chamber, so that the water leakage detector can determine whether there is a water leakage in the sealed chamber by detecting the air pressure in the sealed chamber.

8. The rooftop photovoltaic system installation device according to claim 3, characterized in that: The photovoltaic bracket corresponds to two bottom beams; the support member includes a support rod and an upper support plate and a lower support plate arranged at both ends of the support rod, the lower support plate is quickly connected to the connecting column through a lower fastener, and the upper support plate is quickly connected to the bottom beam through the upper fastener, so as to set the height difference between the two bottom beams according to the inclination angle requirements of the photovoltaic panel.

9. The rooftop photovoltaic system installation device according to any one of claims 1 to 8, characterized in that: The roof comprises purlins and a heat-insulating layer arranged on the purlins; the fixing piece is a self-tapping screw, which passes through the fixing base plate and is threadedly connected to the heat-insulating layer and the purlin, so that the fixing piece is inserted into the roof with interference fit.

10. The rooftop photovoltaic system installation device according to any one of claims 1 to 8, characterized in that: The photovoltaic bracket is configured as a waterproof bracket composed of W-shaped or M-shaped grooved rods, and a guide groove is provided at the bottom of the waterproof bracket to facilitate drainage of accumulated water to the drainage groove on the roof.

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