Photovoltaic bridge penetration metal roof construction

Abstract

The utility model discloses a kind of photovoltaic bridge frame hole metal roof structures, square through hole is formed on metal roof panel, through hole is penetrated by a square steel pipe, square steel pipe is stretched from the through hole, and slot is set at the upper side of the protruding end of the square steel pipe, waterproof sealing connection is formed at the combination of square steel pipe and the metal roof panel, one end of photovoltaic bridge frame is closely embedded in slot, and the photovoltaic bridge frame is fixedly connected with square steel pipe by connecting piece;After one end of photovoltaic bridge frame is connected with slot, it is inclined downward and extended to metal roof panel;The upper end of square steel pipe is also provided with sealing connection with its top cap.The connection structure used in the utility model can bear 20% higher lateral force and vertical force than conventional connection mode, effectively avoids the loosening, displacement and damage of bridge frame, ensures the stable operation of photovoltaic system, reduces the damage of photovoltaic module and the problem of reducing power generation efficiency caused by bridge frame displacement.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a photovoltaic cable tray perforated metal roof structure, which is applicable to various building facilities with metal roofs and requiring the installation of photovoltaic cable trays. Background Technology

[0002] In existing technologies, when photovoltaic (PV) cable trays need to pass through metal roofs, the common practice is to simply drill holes in the metal roof, pass the cable trays directly through, and then perform some basic sealing. For example, some use ordinary rubber sealing strips for sealing. This method may have a certain waterproofing effect in the short term, but over time, the rubber sealing strips will age and deform, leading to rainwater leakage. Moreover, the connection between the cable trays and the metal roof is not stable enough. Under the influence of natural environmental factors such as wind, sun, and rain, it is easy for it to loosen and shift, affecting the normal operation of the PV system and the overall structural stability of the roof.

[0003] In terms of connection construction, the connection between cable trays and the roof often fails to consider the rationality of angles and stress, resulting in a simple vertical connection. This makes the connection points prone to damage under lateral forces. Furthermore, for waterproofing the perforations, most methods only employ a single waterproofing measure, such as applying a single layer of waterproof coating or using simple waterproof membrane, failing to form a multi-layered, multi-layered waterproofing system. This makes it ineffective in coping with complex and variable climatic conditions and long-term rain erosion.

[0004] The aforementioned deficiencies in existing technology severely affect the installation quality and service life of photovoltaic cable trays on metal roofs, and also increase subsequent maintenance costs and safety hazards. Utility Model Content

[0005] In view of the above-mentioned technical problems in the existing technology, and to solve the technical problems of waterproofing, stability and construction convenience at the connection between photovoltaic cable trays and metal roof panels, this utility model provides a photovoltaic cable tray through-hole metal roof structure.

[0006] The present invention adopts the following technical solution:

[0007] A photovoltaic (PV) cable tray perforated metal roof structure includes a square through-hole formed in the metal roof panel. A square steel pipe passes through the through-hole and extends out of the through-hole. A slot is provided on the upper side of the extended end of the square steel pipe. A waterproof and sealed connection is formed between the square steel pipe and the metal roof panel. One end of the PV cable tray is tightly embedded in the slot and is fixedly connected to the square steel pipe by a connector. After being connected to the slot, the PV cable tray extends downward at an angle onto the metal roof panel. A cap is also provided at the upper end of the square steel pipe to form a sealed connection with it.

[0008] Furthermore, a waterproof membrane is laid between the metal roof panel and purlins surrounding the square steel pipe. The waterproof membrane wraps around the square steel pipe and extends out of the through hole. The wrapping height of the waterproof membrane is greater than the preset maximum rainfall height.

[0009] Furthermore, a steel plate is laid between the waterproof membrane and the metal roof panel. The steel plate forms a hollow sleeve at the through hole. The square steel pipe and the waterproof membrane are fitted inside the sleeve. The sleeve extends out from the through hole and is welded or sealed to the metal roof panel. The upper end of the sleeve is fixed as a whole by a clamp.

[0010] Furthermore, a continuous layer of waterproof coating is applied to the outer side of the sleeve and the surrounding metal roof panel.

[0011] Preferably, the joint between the capping cap and the upper end of the square steel pipe is provided with sealant, and the capping cap and the square steel pipe are fixedly connected by fasteners.

[0012] Furthermore, the slots are symmetrically arranged on opposite sides of the upper part of the extended end of the square steel tube, and the photovoltaic cable trays are tightly embedded in the slots on both sides of the square steel tube.

[0013] Preferably, the slot is sealed to the embedded end of the photovoltaic bridge using a rubber gasket and sealant.

[0014] Compared with traditional technologies, this utility model has the following technical advantages and application effects:

[0015] A. This utility model uses a square steel tube to penetrate a square through-hole in a metal roof panel, and seals the connection between the two. A slot for connecting to the photovoltaic (PV) cable tray is located on the upper side of the extended end of the square steel tube, causing the PV cable tray to be tilted. This effectively prevents rainwater leakage. The tilted PV cable tray forms a tight connection with the square steel tube, greatly improving the stability of the PV cable tray on the metal roof. Mechanical testing shows that the connection structure of this utility model can withstand 20% higher lateral and vertical forces than traditional connection methods, effectively preventing loosening, displacement, and damage to the cable tray, ensuring the stable operation of the PV system, and reducing problems such as damage to PV modules and reduced power generation efficiency caused by cable tray displacement.

[0016] B. This utility model involves sequentially mounting a waterproof membrane, a sleeve, and a waterproof coating layer on the outer surface of a square steel pipe. In terms of waterproof performance, the multi-layered waterproof structure, along with specially designed slopes and sealing treatments, effectively prevents rainwater leakage. Actual testing has shown that under simulated heavy rain and other severe weather conditions, the waterproof effect at the perforated area is 3-5 times better than traditional methods, significantly reducing the risk of roof damage due to rainwater leakage and protecting the equipment and structure inside the building.

[0017] C. In terms of construction efficiency, the construction method of this utility model is relatively simple and convenient. The installation and connection of each component have clear steps and standards, reducing the number of rework and adjustments during construction. Compared with traditional construction methods, the construction time is shortened by more than five times, reducing labor costs and the impact on the normal use of the roof. At the same time, due to the improved structural stability and waterproofing, the workload of later maintenance is greatly reduced, saving maintenance costs and time, resulting in good economic and social benefits. It provides a reliable and efficient solution for the application of photovoltaic cable trays on metal roofs.

[0018] D. This utility model provides a sealed cap at the top of the square steel pipe. The cap is equivalent to installing a sunshade and waterproof "hat" for the cables in the photovoltaic cable tray. It not only provides waterproofing but also effectively protects the square steel pipe and the photovoltaic cable tray, extending their service life. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic cable tray perforated metal roof structure provided by this utility model;

[0021] Figure 2 yes Figure 1 The front view shown;

[0022] Figure 3 yes Figure 1 A schematic diagram of the square steel pipe, waterproof membrane, and steel plate assembly in the diagram.

[0023] Figure 4 yes Figure 1 The side view shown;

[0024] Figure 5 yes Figure 1 Partial top view.

[0025] The diagram is labeled as follows:

[0026] 1-Metal roofing panel; 2-Square steel tube; 3-Photovoltaic cable tray; 4-Waterproof membrane

[0027] 5-steel plate

[0028] 51-Sleeve

[0029] 6-Waterproof coating layer; 7-Purlin; 8-Capping cap; 9-Connector; 10-Clamping hoop

[0030] a-Through hole; b-Slotted opening. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] like Figures 1 to 5As shown, this utility model provides a photovoltaic cable tray perforated metal roof structure. A square through hole a is formed in the metal roof panel 1, through which a square steel pipe 2 passes. The square steel pipe 2 extends out of the through hole a, and a slot b is provided on the upper side of the extended end of the square steel pipe 2. A waterproof and sealed connection is formed at the joint between the square steel pipe 2 and the metal roof panel 1. One end of the photovoltaic cable tray 3 is tightly embedded in the slot b, and the photovoltaic cable tray 3 and the square steel pipe 2 are fixedly connected by connectors 9 (such as connecting corner brackets and bolts). To further prevent water leakage, rubber gaskets and sealant can be provided at the joint. After one end of the photovoltaic cable tray 3 is connected to the slot b, it extends downwards to the metal roof panel 1. A cap 8 is also provided at the upper end of the square steel pipe 2 to form a sealed connection with it. In this utility model, the two sides of the connection where the photovoltaic cable tray is embedded in the square steel pipe are treated with an angled slope. Before connecting the photovoltaic cable tray to the square steel pipe, the connection end of the photovoltaic cable tray is cut and processed to form a slope at a certain angle. This way, after installation, rainwater can flow down the slope naturally, avoiding water accumulation and leakage.

[0035] The cap 8 used in this utility model is similar to a sunshade and waterproof "hat." This "hat" is made of special waterproof material and has a certain curvature and slope, which can effectively block rainwater and direct sunlight, avoiding water accumulation on the top of the square steel pipe and material aging caused by sun exposure. Figure 4 and Figure 5 As shown, the cap and the top of the square steel pipe are sealed together with sealant and fasteners, which is also one of the key parts for waterproofing the entire structure. In this invention, when the photovoltaic cable tray is connected and fixed to the side of the square steel pipe through grooves, rubber gaskets and sealant are used for sealing to prevent rainwater from seeping in from the connection point. Furthermore, reinforcing ribs and other structural components are used to strengthen the connection point, improving its load-bearing capacity and stability.

[0036] A square steel tube is installed through a hole in the metal roof panel. The size of the square steel tube is selected according to the specifications and load-bearing capacity of the photovoltaic cable tray. Its material has sufficient strength and corrosion resistance to withstand the load transmitted by the photovoltaic cable tray and the erosion of the natural environment. Preferably, symmetrical slots are provided on both sides of the square steel tube. The shape and size of the slots match the connection points on both sides of the photovoltaic cable tray, allowing the photovoltaic cable tray to be tightly embedded in the slots, achieving precise positioning and a secure connection. During connection, specially designed connectors are used to fix the photovoltaic cable tray to the slots on the square steel tube, ensuring the stability and reliability of the connection. The connectors can use high-strength bolts and specially designed clamps, which can effectively resist the vibration and displacement generated by the photovoltaic cable tray during operation.

[0037] As a further preferred embodiment of this utility model, to further enhance waterproofing capabilities, a waterproof membrane 4 is laid between the metal roof panel 1 and the purlins 7 surrounding the square steel pipe 2. The waterproof membrane 4 wraps around the square steel pipe 2 and extends through a through hole a. The wrapping height of the waterproof membrane 4 is greater than the preset maximum rainfall height. By laying the waterproof membrane on the metal roof panel and then folding it up to wrap around the square steel pipe, the folding height is determined based on factors such as the roof slope and rainfall, and is generally not less than a certain standard height, to ensure that rainwater does not seep in through the gaps between the square steel pipe and the metal roof panel.

[0038] like Figure 3 As shown, a steel plate 5 is also laid between the waterproof membrane 4 and the metal roof panel 1. The steel plate 5 forms a hollow sleeve 51 at the through hole a. The square steel pipe 2 and the waterproof membrane 4 are fitted into the sleeve 51. The sleeve 51 extends out from the through hole a and is welded or sealed to the metal roof panel 1. At the upper end of the sleeve 51, the sleeve 51, the waterproof membrane 4 and the square steel pipe 2 are fixed into a whole by a clamp 10, which further enhances the waterproof performance and the stability of the connection.

[0039] In addition, a continuous layer of waterproof coating 6 is applied to the outer surface of the sleeve 51 and the surrounding metal roof panel 1. The waterproof coating is applied to the outside of the sleeve in two or more coats to form a multi-layered waterproof protection. The waterproof coating should have good weather resistance, water resistance, and adhesion, and should maintain its waterproof effect under long-term natural conditions. During the application process, it is essential to ensure uniform coverage without any missed areas or bubbles. Each coat should be applied perpendicular to the others to improve the reliability of the waterproofing.

[0040] The structural innovation of this utility model is mainly reflected in the following aspects:

[0041] Firstly, the unique connection structure between the square steel tube and the photovoltaic cable tray achieves a precise and stable connection through slotting on both sides and special connectors, effectively resisting various external forces.

[0042] Secondly, the multi-layered and comprehensive waterproofing system combines waterproof membranes, steel plate edging, waterproof coatings, slope design, and sealing treatment to form a highly efficient waterproof barrier, solving the long-standing waterproofing problem at the penetration points of cable trays on metal roofs.

[0043] Thirdly, the sunshade and waterproof cap installed at the top of the square steel pipe not only serves a waterproof function, but also effectively protects the top and extends its service life.

[0044] Fourth, the optimized construction techniques and methods make the installation process of the entire structure simpler and more efficient, reduce construction costs and difficulties, improve construction quality and overall performance, and provide new ideas and methods for the development of related technologies in the field of building engineering.

[0045] Any aspects not described herein are applicable to existing technologies.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A photovoltaic cable tray perforated metal roof structure, characterized in that, A square through hole (a) is formed on the metal roof panel (1), through which a square steel pipe (2) passes. The square steel pipe (2) extends out of the through hole (a), and a slot (b) is provided on the upper side of the extended end of the square steel pipe (2). A waterproof and sealed connection is formed at the joint between the square steel pipe (2) and the metal roof panel (1). One end of the photovoltaic cable tray (3) is tightly embedded in the slot (b), and the photovoltaic cable tray (3) is fixedly connected to the square steel pipe (2) by a connector (9). After the photovoltaic cable tray (3) is connected to the slot (b), it extends downward to the metal roof panel (1). The upper end of the square steel pipe (2) is also provided with a cap (8) that forms a sealed connection with it.

2. The photovoltaic cable tray perforated metal roof structure according to claim 1, characterized in that, A waterproof membrane (4) is laid between the metal roof panel (1) and the purlin (7) around the square steel pipe (2). The waterproof membrane (4) wraps around the square steel pipe (2) and extends out of the through hole (a). The wrapping height of the waterproof membrane (4) is greater than the preset maximum rainfall height.

3. The photovoltaic cable tray perforated metal roof structure according to claim 2, characterized in that, A steel plate (5) is also laid between the waterproof membrane (4) and the metal roof panel (1). The steel plate (5) forms a hollow sleeve (51) at the through hole (a). The square steel pipe (2) and the waterproof membrane (4) are fitted into the sleeve (51). The sleeve (51) extends out from the through hole (a) and is welded or sealed to the metal roof panel (1). The upper end of the sleeve (51) is fixed into a whole by a clamp (10).

4. The photovoltaic cable tray perforated metal roof structure according to claim 3, characterized in that, A continuous layer of waterproof coating (6) is applied to the outer side of the sleeve (51) and the metal roof panel (1) around it.

5. The photovoltaic cable tray perforated metal roof structure according to any one of claims 1-4, characterized in that, The cap (8) and the upper end of the square steel pipe (2) are provided with sealant, and the cap (8) and the square steel pipe (2) are fixedly connected by fasteners.

6. The photovoltaic cable tray perforated metal roof structure according to claim 5, characterized in that, The slots (b) are symmetrically arranged on opposite sides of the upper part of the extended end of the square steel tube (2), and the photovoltaic bridge (3) is tightly embedded in the slots (b) on both sides of the square steel tube (2).

7. The photovoltaic cable tray perforated metal roof structure according to claim 6, characterized in that, The slot (b) and the embedded end of the photovoltaic bridge (3) are sealed with rubber gaskets and sealant.

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