Roof pneumatic membrane photovoltaic support structure

Abstract

The invention provides a roof inflatable membrane photovoltaic support structure which comprises an inflatable membrane structure capable of being inflated and deflated, the bottom of the inflatable membrane structure is arranged on a roof, the roof inflatable membrane photovoltaic support structure further comprises a plurality of inhaul cables, and the two ends of each inhaul cable are fixed to the roof. When the pneumatic membrane structure is in a working state, the inhaul cable presses the upper surface of the pneumatic membrane structure; at least one fixing mechanism for fixing the photovoltaic panel is arranged at the top of the inflatable membrane structure, the two ends of the inhaul cable are fixedly arranged on inhaul cable anchor blocks, and the inhaul cable anchor blocks are arranged on the roof and located on the periphery of the inflatable membrane structure. The self weight of the whole structure is reduced, and the requirement for roof bearing capacity is lowered. According to the invention, considerable activity space can be increased for the roof while resources are saved, the overall manufacturing cost is lower, the use scene is richer, and popularization and application of new energy, especially roof photovoltaic power generation, are facilitated.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic brackets, and in particular relates to a roof inflatable membrane photovoltaic bracket structure. Background Art

[0002] Generally, adding photovoltaic power generation to a concrete roof requires adding steel structure brackets and foundation piers. The bracket form generally adopts a fixed triangular steel bracket, and the angle is adjusted according to different regions and roof layout conditions, and the angle is between 5 and 30 degrees. The fixed triangular steel bracket is fixed by adding a foundation pier on the roof. Anchor bolts need to be embedded in the foundation pier. The steel bracket is connected to the pier through the embedded anchor bolts and placed on the roof according to the layout of the photovoltaic panels, and installation and maintenance channels are reserved. This approach may cause certain damage to the waterproofing and insulation of the roof, and occupy the original space of the roof, especially for the roof of residential areas. The photovoltaic arrangement on the roof occupies the activity space of the residents, which to a certain extent damages the interests of users. The new steel structure bracket on the roof has high requirements for the bearing capacity of the roof, and the cost of the new steel structure bracket is high, which is not conducive to the promotion and application of roof photovoltaic power generation. Patent CN217445286U discloses an inflatable membrane structure solar photovoltaic bracket, in which the bracket body is an inflatable membrane structure. However, the bracket is still set below the inflatable membrane structure of the comparative document for fixing, which occupies a large space. Moreover, the inflatable membrane structure of the comparative document cannot keep the internal air pressure constant or cannot adjust the internal air pressure in time. Summary of the invention

[0003] The invention provides a roof inflatable membrane photovoltaic support structure.

[0004] The objective of the present invention is achieved in the following manner: a roof inflatable membrane photovoltaic support structure, comprising an inflatable membrane structure that can be inflated and deflated, the bottom of the inflatable membrane structure being arranged on the roof, and comprising a plurality of cables whose two ends are respectively fixed to the roof; when the inflatable membrane structure is in a working state, the cables press the upper surface of the inflatable membrane structure; at least one fixing mechanism for fixing a photovoltaic panel is arranged on the top of the inflatable membrane structure, the two ends of the cables are fixedly arranged on cable anchor blocks, and cable anchor blocks are respectively arranged on the roof around the inflatable membrane structure.

[0005] An air pressure automatic regulating system is arranged inside the inflatable membrane structure. The air pressure automatic regulating system comprises at least one air pump arranged inside the inflatable membrane structure, the air pump has its own air pressure sensor or at least one air pressure sensor is arranged inside the inflatable membrane structure; the air pump and the air pressure sensor are electrically connected to a controller; the air pump is connected to the outside of the inflatable membrane structure in a switchable manner through an air intake pipe; and a closable inlet is arranged on the inflatable membrane structure.

[0006] The cables include a plurality of cables arranged transversely and a plurality of cables arranged longitudinally; after the inflatable membrane structure is inflated, the cables press the upper surface of the inflatable membrane structure transversely and longitudinally.

[0007] The inflatable membrane photovoltaic support structure also includes side cables on the side of the inflatable membrane structure in a compressed working state, and both ends of the side cables are respectively fixed on the roof.

[0008] The fixing structure comprises at least two parallel beams fixed to the lower surface of the photovoltaic panel; at least one leg is arranged at the lower end of each beam, and the lower end of the leg is fixed on the cable.

[0009] Compared with the prior art, the present invention adopts an inflatable membrane structure as a photovoltaic bracket and support, which reduces the weight of the overall structure and reduces the bearing capacity requirements of the roof. At the same time, the internal space of the inflatable membrane can improve the utilization rate of the roof, which can save resources while adding considerable activity space to the roof. Compared with traditional roof steel structure brackets, the overall cost is lower and the use scenarios are more diverse, which is conducive to the promotion and application of new energy, especially roof photovoltaic power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention.

[0011] Figure 2 It is a top view of the present invention.

[0012] Among them, 1 is the inflatable membrane structure, 2 is the cable, 3 is the cable anchor block, 4 is the crossbeam, 5 is the photovoltaic panel, 6 is the side cable, 7 is the support leg, 8 is the air pump, and 9 is the controller. DETAILED DESCRIPTION

[0013] In the present invention, unless otherwise clearly specified and limited, the technical terms used in this application shall be the common meanings understood by the technicians of the present invention. The terms "connected", "connected", "fixed", "set", etc. should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be directly connected, or indirectly connected through an intermediate medium; may be mechanically connected or electrically connected. Unless otherwise clearly specified and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or indirectly in contact through an intermediate medium. Moreover, the first feature "above" or "above" or "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below" or "below" or "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Relational terms such as first, second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as "center", "lateral", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc., to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0014] The following will provide a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments. Figure 1-2As shown, a roof inflatable membrane photovoltaic support structure includes an inflatable membrane structure 1 that can be inflated and deflated, the bottom of the inflatable membrane structure 1 is set on the roof, and also includes a plurality of cables 2 whose two ends are respectively fixed to the roof; when the inflatable membrane structure 1 is in working state, the cables 2 press the upper surface of the inflatable membrane structure 1; at least one fixing mechanism for fixing a photovoltaic panel 5 is set on the top of the inflatable membrane structure 1, and the two ends of the cables 2 are fixedly set on the cable anchor blocks 3, and the cable anchor blocks 3 are respectively set around the inflatable membrane structure 1 on the roof. The cables 2 are generally fixed to the tops of the cable anchor blocks 3 around the inflatable membrane structure 1. The cable anchor blocks 3 generally use precast concrete blocks, and different sizes can be set according to the spacing and tension of the cables 2. The precast concrete blocks can use concrete with C15-C30 marks, and their function is to bear the tension of the cables 2. Anchor bolts are generally embedded in the concrete blocks as fixing points of the cables 2. The cable anchor blocks 3 are heavy and can generally be placed on the roof. The ends of multiple cables 2 can share a cable anchor block 3, or they can be provided with respective cable anchor blocks 3. Of course, the two ends of the cable 2 can also be fixed to the top of a column or a slab of a building structure. When fixed to the top of a column or a slab, an anchor bolt needs to be made on the top of the original structure, and the cable 2 can be directly fixed to the anchor bolt.

[0015] The inflatable membrane structure 1 is a membrane structure, the main material of which is PVC membrane. As one of the main load-bearing components of the photovoltaic support system, its strength is mainly adjusted by air pressure. The inflatable membrane material is generally acid-resistant, corrosion-resistant and has good fire resistance. The inflatable membrane structure 1 can be a closed membrane structure or have an entrance and exit that can be closed and opened. The bottom membrane structure of the inflatable membrane structure 1 is placed on the roof, and a photovoltaic panel 5 is set on the top membrane structure. The air pressure in the inflatable membrane structure 1 is generally between 100 and 300 pa, and its shape can be set to a general cube or other anisotropic shapes. It can be processed and formed in advance in the factory according to the roof conditions for setting photovoltaic power generation. The installation can be completed by directly inflating the roof, and it can be folded and stored after deflation. The inflatable membrane can withstand different degrees of wind, frost, rain, snow, etc. according to its strength and the tension of the cable 2. The internal space of the inflatable membrane can be set to different sizes according to needs, and entrances and exits can be set to meet the needs of internal use, which increases the use or storage space, especially for general residential areas with site requirements. The inflatable membrane structure 1 can be used as a resident activity room, etc. The inflatable membrane structure 1 placed on the roof can also well protect the insulation layer and waterproof layer of the roof, which is beneficial to the structure of the top floor. The service life of the inflatable membrane structure 1 is generally more than 30 years, and the general design life of photovoltaic power generation is 25 years. The inflatable membrane support system can fully meet its design and use requirements. In the present invention, the inflatable membrane structure 1 is used as a photovoltaic support and support, so that the weight of the overall structure is reduced, and the requirements for the bearing capacity of the roof are reduced. An automatic air pressure adjustment system is provided to automatically adjust the pressure of the inflatable membrane structure 1, so that the inflatable membrane structure 1 maintains a stable support state. The air pressure automatic adjustment system can adopt the air pressure adjustment mechanism used by the existing inflatable membrane structure 1. The present invention utilizes the advantages of convenient processing, transportation, installation and disassembly of inflatable membrane materials, and photovoltaic power generation can be set on roofs of different shapes. The present invention utilizes the internal space of the inflatable membrane to improve the utilization rate of the roof, and can save resources while adding considerable activity space to the roof. Compared with the traditional roof steel structure support, the overall cost is lower and the use scenarios are richer, which is conducive to the promotion and application of new energy, especially roof photovoltaic power generation.

[0016] Furthermore, an air pressure automatic regulating system is arranged inside the inflatable membrane structure 1. The air pressure automatic regulating system includes at least one air pump 8 arranged inside the inflatable membrane structure 1, the air pump 8 has its own air pressure sensor or at least one air pressure sensor is arranged inside the inflatable membrane structure 1; the air pump 8 and the air pressure sensor are electrically connected to a controller 9; the air pump 8 is connected to the outside of the inflatable membrane structure 1 through an air intake pipe in a switchable manner. The structure of arranging an air pressure sensor inside the air pump 8 belongs to the prior art. At least one air pressure sensor is arranged inside the inflatable membrane structure 1. The air pressure sensor is used to detect whether the air pressure inside the inflatable membrane structure 1 is within a set range. If the air pressure inside the inflatable membrane structure 1 is too low, the air pump 8 is controlled to start, and the outside air is sucked through the air intake pipe for supplementation. If the air pressure of the inflatable membrane structure 1 is within a suitable range, the air pump 8 closes the air intake end. The inlet of the air intake pipe is outside the inflatable membrane structure 1 and is connected to the atmosphere. The inflatable membrane structure 1 can also be provided with a closable entrance and exit to facilitate the entry of objects and personnel. Of course, the air pressure automatic regulating system may not be provided for the inflatable membrane structure 1. In this case, the inflatable membrane structure 1 only needs to be provided with an inflation port, and the inflatable membrane structure 1 is inflated by an air pump 8 externally.

[0017] Specifically, the cables 2 include a plurality of cables 2 arranged transversely and a plurality of cables 2 arranged longitudinally; after the inflatable membrane structure 1 is inflated, the cables 2 press the upper surface of the inflatable membrane structure 1 transversely and longitudinally. Figure 1 and Figure 2 As shown, the horizontal and vertical directions are preferably set at 90 degrees apart. Of course, they can also be set at an angle and cross-arranged above the inflatable membrane structure 1 as needed. The cable 2 is the main force-bearing component that fixes the inflatable membrane structure 1 by the tension of the cable. The tension can be adjusted according to the needs. The cable 2 is generally made of steel strands twisted by steel wires. The arrangement of the steel strands is adjusted according to the size and shape of the membrane structure. Generally, one strand can be arranged every 2 to 6 meters. The steel strand can be of various specifications such as 2 wires, 3 wires, 7 wires, 19 wires, etc. The outside of the steel strand can be wrapped with paraffin or other materials to reduce friction on the membrane structure.

[0018] Furthermore, the inflatable membrane photovoltaic support structure also includes a side cable 6 on the side of the inflatable membrane structure 1 in a compressed working state, and the two ends of the side cable 6 are respectively fixed on the roof. The side cable 6 has the same function as the cable 2. The cable 2 is set to fix the lateral displacement of the inflatable membrane. The side cable 6 is generally set according to the height of the inflatable membrane, and may not be set when the height of the inflatable membrane is low. When the height of the inflatable membrane is high, the side cable 6 can be set to reinforce the side of the inflatable membrane, thereby stabilizing the structure of the inflatable membrane. The spacing of the side cables 6 is generally adjusted between 2m and 6m. The two ends of the side cables 6 can also be set on the zipper anchor block or on the top of the column or board of the building structure. The specific fixing method is the same as the fixing method of the cable 2, except that the fixing height is different.

[0019] Specifically, the fixed structure includes at least two parallel beams 4 fixed to the lower surface of the photovoltaic panel 5; at least one leg 7 is arranged at the lower end of each beam 4, and the lower end of the leg 7 is fixed on the cable 2. The photovoltaic panel 5 is a component directly involved in photovoltaic power generation. Its parameters vary according to the specifications of photovoltaic modules of different manufacturers. Its length is generally between 2000mm and 2500mm, its width is between 900mm and 1300mm, and its thickness is between 20mm and 50mm. The peak power of a single photovoltaic module is generally between 300Wp and 700Wp depending on the specifications of the module. The photovoltaic panel 5 is installed at the intersection of the cable 2 through the beam 4 and the leg 7. The angle of the photovoltaic panel 5 can be adjusted according to demand, generally between 5 and 30 degrees. The crossbeam 4 is used as a component for fixing the photovoltaic panel 5. It is generally made of steel structure or aluminum alloy. The material is generally not less than Q235, and the hot-dip galvanizing content is not less than 65μm. The material of the aluminum alloy material is generally 6005-T5 and above. When using steel structure or aluminum alloy, a U-shaped finished component is generally used. The upper photovoltaic panel 5 is connected by a clamp or other connecting parts, and the lower leg 7 is connected by bolts. The leg 7 is the main supporting component connecting the cable 2 and the photovoltaic panel 5. Its material is generally steel structure, and finished angle steel, threaded steel and other materials can be used. The steel structure material is generally not less than Q235, and the hot-dip galvanizing content is not less than 65μm. The photovoltaic panel 5 and the crossbeam 4 can also be connected by common connection methods such as bolt connection or welding connection. The upper end of the leg 7 and the crossbeam 4 can be bolted. The lower end of the leg 7 and the cable 2 can be connected to the cable 2 by a clamp, or it can be detachably connected to the cable 2 by other methods such as winding and bundling. The fixing structure may also be an existing structure as long as it can achieve the connection between the cable 2 and the photovoltaic panel 5 .

[0020] During specific implementation: the inflatable membrane structure 1 is inflated on the roof after being customized in the factory according to the required shape and size. A cable anchor block 3 is set at a suitable position on the roof, and the cable 2 and the side cable 6 are pressed against the front and side of the inflatable membrane structure 1 to fix the inflatable membrane structure 1. The photovoltaic panel 5 is fixed to the crossbeam 4, the crossbeam 4 is fixed to the upper end of the leg 7, and the lower end of the leg 7 is fixed at the intersection of the horizontal cable 2 and the longitudinal cable 2. The inflatable membrane structure 1 with an air pump 8 inside can adjust the air pressure at any time as needed.

[0021] The present invention is applicable to the scheme of adding photovoltaic brackets to general concrete or other prefabricated concrete roofs. The roof bearing capacity requirement is generally not less than 0.3kN / m2. The inflatable membrane material generally adopts PVC membrane, which has good mechanical properties and is acid-resistant and corrosion-resistant. The cable 2 is generally made of steel wire and arranged at a certain interval on the upper part and side of the inflatable membrane. The cable 2 is fixed by an anchor block to resist certain wind and snow attacks. The photovoltaic panel 5 is installed on the top or side of the inflatable membrane through the support legs 7 and the crossbeam 4 to form a new form of roof photovoltaic power generation system. The application of this system will be more conducive to the promotion of roof photovoltaic power generation, with lower overall cost, smaller bearing capacity requirements for the roof, more convenient and quick installation, and stronger adaptability.

[0022] The technical features of the above-mentioned embodiments can be combined arbitrarily, and as long as there is no contradiction in the combination of these technical features, they should be considered as the scope of this specification. Without departing from the overall concept of the present invention, the technical solution of the present invention and the equivalent replacement or change, as well as the changes and improvements made, should also be regarded as the protection scope of the present invention.

Claims

1. A roof inflatable membrane photovoltaic support structure, comprising an inflatable membrane structure that can be inflated and deflated, characterized in that: The bottom of the inflatable membrane structure is arranged on the roof, and also includes a plurality of cables whose two ends are respectively fixed to the roof; when the inflatable membrane structure is in working state, the cables press the upper surface of the inflatable membrane structure; at least one fixing mechanism for fixing the photovoltaic panel is arranged on the top of the inflatable membrane structure, and the two ends of the cables are fixed on the cable anchor blocks, and the cable anchor blocks are respectively arranged on the roof around the inflatable membrane structure.

2. According to claim 1, a roof inflatable membrane photovoltaic support structure is characterized by: An automatic air pressure regulating system is arranged inside the inflatable membrane structure; the automatic air pressure regulating system includes at least one air pump arranged inside the inflatable membrane structure, the air pump has its own air pressure sensor or at least one air pressure sensor is arranged inside the inflatable membrane structure; the air pump and the air pressure sensor are electrically connected to a controller; the air pump is connected to the outside of the inflatable membrane structure in a switchable manner through an air intake pipe; a closable inlet is arranged on the inflatable membrane structure.

3. According to claim 1, a roof inflatable membrane photovoltaic support structure is characterized by: The cables include a plurality of cables arranged transversely and a plurality of cables arranged longitudinally; after the inflatable membrane structure is inflated, the cables press the upper surface of the inflatable membrane structure transversely and longitudinally.

4. According to claim 1, a roof inflatable membrane photovoltaic support structure is characterized by: The inflatable membrane photovoltaic support structure also includes side cables on the side of the inflatable membrane structure in a compressed working state, and both ends of the side cables are respectively fixed on the roof.

5. A roof inflatable membrane photovoltaic support structure according to any one of claims 1 to 4, characterized in that: The fixing structure comprises at least two parallel beams fixed to the lower surface of the photovoltaic panel; at least one leg is arranged at the lower end of each beam, and the lower end of the leg is fixed on the cable.

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