Photovoltaic module and purline reinforcing system

Abstract

The invention provides a photovoltaic module and purline reinforcing system, which is characterized in that a purline is n-shaped and comprises a purline tail end reinforcing assembly, the purline tail end reinforcing assembly comprises a plurality of connecting beams, the connecting beams are fixed at the tail end of the purline and are parallel to a flat single-shaft bracket main beam, a cantilever connecting structure is fixed at the tail end of each purline, and the cantilever connecting structures are parallel to the flat single-shaft bracket main beam. The plurality of purlins are fixedly connected with the connecting beams through the cantilever connecting structures, the plurality of purlins are integrally connected through the connecting beams, local large wind load is dispersed to the adjacent purlins, buckling or excessive deformation of the single purlins due to the fact that the single purlins bear too large load is effectively avoided, the vibration amplitude of the purlins and the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged. The overall stability and wind resistance are improved, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic modules, and in particular to a reinforcement system for photovoltaic modules and purlins. Background Art

[0002] The flat single-axis tracking bracket is a common photovoltaic bracket structure, usually composed of a single row of multiple columns and a slender main beam. The photovoltaic modules are fixed to the main beam through purlins. At present, the "channel" - shaped purlins are often used to connect and fix the photovoltaic modules. Each purlin is connected and fixed to the main beam of the flat single-axis tracking bracket through U - shaped bolts. The cantilever end of the purlin is far from the support point, and the rigidity is low. This characteristic is particularly prominent in the 2P - type flat single-axis tracking bracket with a long transverse length. Such a flexible structure is more likely to deform or vibrate under external forces, and the U - shaped bolt connection may further reduce the rigidity due to fatigue or loosening. When the local vibration at the end of the purlin is too large, the wind load effect will be significantly enhanced, further exacerbating the structural deformation, which may cause the overall failure or significant plastic deformation of the cantilever end. This will not only damage the photovoltaic modules or cause the purlin to buckle, but also seriously affect the operation stability and power generation efficiency of the photovoltaic power station.

[0003] Holes are reserved on the horizontal flanges on both sides of the purlin, and the photovoltaic modules are connected and fixed to the purlin through bolts and nuts. This connection method has the following obvious defects: (1) The "channel" - shaped purlin is an open structure. It has a large bending stiffness around the cross - section horizontal axis and vertical axis, but a very small bending and torsion stiffness around the longitudinal axis. Under the action of wind load, it is difficult for the open "channel" - shaped purlin to effectively connect the two - side modules into a whole, resulting in obvious jitter of the photovoltaic modules; (2) The flanges of the "channel" - shaped purlin are connected to the photovoltaic modules through bolts and nuts. Since the thicknesses of the purlin and the aluminum alloy frame of the photovoltaic module are relatively thin, wind - induced vibration may cause the plates to deform or vibrate locally, resulting in uneven stress distribution at the bolt connection, increasing the risk of nut loosening or falling off. Under the long - term action of wind load, the above problems may lead to failures such as damage to the connection part of the photovoltaic modules and bolt loosening, thereby affecting the operation stability and power generation efficiency of the photovoltaic power station, increasing the equipment maintenance cost, and causing potential safety hazards, ultimately resulting in power loss and reduced economic benefits. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above - mentioned deficiencies of the prior art and provide a reinforcement system for photovoltaic modules and purlins, which can solve the problem that the purlins used to connect photovoltaic modules are prone to vibrate or even deform under the wind load effect.

[0005] To this end, the present invention adopts the following technical solutions: A photovoltaic module and purlin reinforcement system, the purlin is in a "channel" shape, including a purlin end reinforcement component, the purlin end reinforcement component includes a number of connecting beams, the connecting beams are fixed to the ends of the purlins and are parallel to the main beams of the flat single-axis bracket, and cantilever connection structures are respectively fixed to the ends of each purlin, and a number of purlins are fixedly connected to the connecting beams through the cantilever connection structures.

[0006] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination: The cantilever connection structure includes a plug-in part, the plug-in part is horizontally inserted into the opening groove of the purlin, and the plug-in part is fixedly connected to the purlin through a first bolt assembly.

[0007] The cantilever connection structure further includes a loop buckle part, the loop buckle part extends out of the cantilever end of the purlin, the loop buckle part includes a first buckling part and a second buckling part, the first buckling part is rotatably connected around one end of the second buckling part, and the other end of the first buckling part and the second buckling part are fixed through a second bolt assembly, and the connecting beam can be fixed between the first buckling part and the second buckling part and the connecting beam is in surface contact with the loop buckle part.

[0008] Adjacent two of the connecting beams are fixedly connected through a connecting sleeve.

[0009] A photovoltaic module and purlin reinforcement system further includes connection node members, a number of connection nodes for connecting photovoltaic modules are respectively provided on each purlin, the connection nodes on the same purlin are located between the purlin end reinforcement components, the connection node members are respectively inserted at each connection node of the purlin, the connection node members include support members, the cross section of the support members is in a "T" shape, the web of the support members is longitudinally inserted into the opening groove of the purlin and the plug-in surfaces of the two are in contact, the two side wings of the support members are in contact with the two side wings of the purlin, and the left and right adjacent photovoltaic modules are respectively fixed on the two side wings of the support members through a first bolt assembly, and the two side wings of the support members and the two side wings of the purlin are also fixedly connected through the first bolt assembly.

[0010] The connection node member further includes an external wrapping member provided below the support member, the cross section of the external wrapping member is in a "channel" shape, the opening groove of the external wrapping member is inserted into the web of the purlin and the plug-in surfaces of the two are in contact, the two side wings of the external wrapping member are in contact with the two side wings of the purlin, and the two side wings of the support member, the two side wings of the purlin and the two side wings of the external wrapping member are fixedly connected in sequence through the first bolt assembly.

[0011] The web of the support member and the web of the purlin are fixedly connected through a second bolt assembly.

[0012] The web of the external wrapper, the web of the support member, and the web of the purlin are fixedly connected by a second bolt assembly.

[0013] The dimension of the connection node member in the length direction of the purlin is 2 - 3 cm, and the connection node member is flush with the edge of the purlin in the width direction of the purlin.

[0014] The thickness of the two flange plates on both sides of the support member is 1 cm, and the thickness of the external wrapper is 1 cm.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: By connecting several purlins integrally through a connecting beam, the locally large wind load is dispersed to adjacent purlins, effectively avoiding buckling or excessive deformation of a single purlin due to excessive load bearing, improving the vibration amplitude of the purlins and photovoltaic modules, enhancing the overall stability and wind resistance performance, and extending the service life; By setting the connection node member, the flexural stiffness and torsional stiffness of the slender "channel" - shaped purlin along the longitudinal axis are significantly improved, reducing the amplitude of the overall jitter of the purlins under the action of wind load; The connection node member connects the photovoltaic modules on the two horizontal flange plates on both sides of the "channel" - shaped purlin into a rigid whole, enabling the two - side photovoltaic modules to be stressed synergistically under the action of wind load, improving the connection stiffness, directly connecting the photovoltaic modules without passing through the purlins, avoiding obvious jitter of the purlins and photovoltaic modules, effectively controlling the local deformation of the purlins, and enhancing the structural stability; The structure is simple, convenient for processing and installation, and is only set at the connection nodes, with high economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic connection structure diagram of the purlin end reinforcement assembly of the present invention.

[0017] Figure 2 It is a detailed structure schematic diagram of the connection between the purlin end reinforcement assembly of the present invention and the purlin.

[0018] Figure 3 It is a schematic connection structure diagram between the opened loop - buckle part of the purlin end reinforcement assembly of the present invention and the connecting beam.

[0019] Figure 4 It is an assembled cross - section schematic diagram of the connection node member of the present invention.

[0020] Figure 5 It is a top view of the overall installation of the purlin end reinforcement assembly and the connection node member of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation of the present invention will be described below in conjunction with specific embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar functional elements throughout. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention; for better illustration of this embodiment, some components in the drawings may be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention.

[0022] The present invention will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0023] A photovoltaic module and purlin reinforcement system provided by the present invention, the purlin 5 is in a "channel" shape, including a purlin end reinforcement component. The purlin end reinforcement component includes a plurality of connecting beams 2. The connecting beams 2 are fixed to the ends of the purlins 5 and are parallel to the main beam of the flat single-axis bracket. An end connection structure 1 is fixed to the end of each purlin 5, and a plurality of purlins 5 are fixedly connected to the connecting beams 2 through the end connection structure 1.

[0024] By fixing the ends of a plurality of purlins 5 into a whole through the connecting beam 2, the cooperative force between adjacent purlins 5 is realized. The connecting beam 2 can disperse the local large wind load to the adjacent purlins 5, effectively avoiding the buckling or excessive deformation of a single purlin 5 due to excessive load, and improving the overall stability and wind resistance.

[0025] In this embodiment, the connecting beam 2 is made of a standard steel pipe section, and its specifications are an outer diameter of about 3 - 5 cm and a wall thickness of about 2 mm.

[0026] The end connection structure 1 includes a plug-in part 11. The plug-in part 11 is horizontally inserted into the opening groove of the purlin 5, and the plug-in part 11 is fixedly connected to the purlin 5 through the first bolt assembly 3.

[0027] In this embodiment, the plug-in part 11 is a solid square structure. After the plug-in part 11 is inserted into the purlin 5, the surfaces of the two are fitted. The plug-in part 11 is horizontally fixedly connected to the purlin 5 through two first bolt assemblies 3.

[0028] The end connection structure 1 further includes a loop part 12. The loop part 12 extends out of the cantilever end of the purlin 5. The loop part 12 includes a first fastening part 121 and a second fastening part 122. The first fastening part 121 is rotatably connected around one end of the second fastening part 122. The other ends of the first fastening part 121 and the second fastening part 122 are fixed through the second bolt assembly 4. The connecting beam 2 can be fixed between the first fastening part 121 and the second fastening part 122 and the connecting beam 2 is in surface contact with the loop part 12.

[0029] Two adjacent connecting beams 2 are fixedly connected through a connecting sleeve 10.

[0030] In this embodiment, the overall length of the connecting beam 2 should be the same as the length of the main beam of the flat single-axis tracking bracket. Since the length of a common standard steel pipe is generally 6m, which is less than the length of the main beam of most flat single-axis tracking brackets, the overall length is extended by docking two adjacent connecting beams 2 through the connecting sleeve 10. The connecting sleeve 10 is a steel pipe sleeve docking joint.

[0031] A photovoltaic module and purlin reinforcement system further includes connecting node members. A plurality of connecting nodes for connecting photovoltaic modules are respectively provided on each purlin 5. The connecting nodes on the same purlin 5 are located between the end reinforcement components of the purlin. A connecting node member is inserted at each connecting node of the purlin 5. The connecting node member includes a support member 6. The cross-section of the support member 6 is in a "T" shape. The web of the support member 6 is longitudinally inserted into the opening groove of the purlin 5 and the plug-in surfaces of the two are in contact. The two side wings of the support member 6 are in contact with the two side wings of the purlin 5. Two adjacent photovoltaic modules on the left and right are respectively fixed on the two side wings of the support member 6 through a first bolt assembly 7. The two side wings of the support member 6 and the two side wings of the purlin 5 are also fixedly connected through a first bolt assembly 7.

[0032] The connecting node member further includes an external wrapping member 8 provided below the support member 6. The cross-section of the external wrapping member 8 is in a "channel" shape. The opening groove of the external wrapping member 8 is inserted into the web of the purlin 5 and the plug-in surfaces of the two are in contact. The two side wings of the external wrapping member 8 are in contact with the two side wings of the purlin 5. The two side wings of the support member 6, the two side wings of the purlin 5, and the two side wings of the external wrapping member 8 are fixedly connected in sequence through a first bolt assembly 7.

[0033] The web of the support member 6 and the web of the purlin 5 are fixedly connected through a second bolt assembly 9.

[0034] The web of the external wrapping member 8, the web of the support member 6, and the web of the purlin 5 are fixedly connected through a second bolt assembly 9.

[0035] The dimension of the connecting node member in the length direction of the purlin 5 is 2 - 3 cm, and the connecting node member is flush with the edge of the purlin 5 in the width direction of the purlin 5.

[0036] The thickness of the two side flanges of the support member 6 is 1 cm, and the thickness of the external wrapping member 8 is 1 cm.

[0037] Based on the description and drawings of the present invention, those skilled in the art can easily manufacture or use a photovoltaic module and purlin reinforcement system of the present invention, and can achieve the positive effects recorded in the present invention.

[0038] It should be noted that the terms "comprising", "having" and any variations thereof in the description, claims and above-mentioned drawings of the present invention are intended to cover non-exclusive inclusion. The terms "installed", "arranged", "provided with", "connected", "linked", "socketed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two mechanisms, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "one end", "the other end", "outer side", "inner side", "horizontal", "end portion", "length", "outer end", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred mechanisms or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. The terms "first" and "second" are also used only for the sake of brevity in description and do not indicate or imply relative importance.

[0040] In addition, when practicing the claims of the present invention, those skilled in the art can understand and affect the variations of the disclosed embodiments through the study of the drawings, the disclosure and the appended claims. In addition, in the claims and the description, words such as "comprising", "containing", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0041] The above are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made in accordance with the present invention are covered by the scope of the claims of the present invention, and no further examples will be given here.

Claims

1. A photovoltaic module and purlin reinforcement system, wherein the purlin (5) is in a "channel" shape, and is characterized in that, It includes a purlin end reinforcement component, and the purlin end reinforcement component includes a number of connecting beams (2). The connecting beams (2) are fixed to the ends of the purlins (5) and are parallel to the main beam of the flat single-axis bracket. An end of each purlin (5) is respectively fixed with a cantilever connection structure (1), and a number of purlins (5) are fixedly connected to the connecting beams (2) through the cantilever connection structures (1).

2. The photovoltaic module and purlin reinforcement system according to claim 1, wherein The cantilever connection structure (1) includes a plug-in part (11). The plug-in part (11) is horizontally inserted into the open slot of the purlin (5), and the plug-in part (11) is fixedly connected to the purlin (5) through a first bolt assembly (3).

3. The photovoltaic module and purlin reinforcement system according to claim 1 or 2, characterized in that, The cantilever connection structure (1) further includes a loop buckle part (12). The loop buckle part (12) extends out of the cantilever end of the purlin (5). The loop buckle part (12) includes a first buckling part (121) and a second buckling part (122). The first buckling part (121) is rotatably connected around one end of the second buckling part (122), and the other end of the first buckling part (121) and the second buckling part (122) are fixed through a second bolt assembly (4). The connecting beam (2) can be fixed between the first buckling part (121) and the second buckling part (122), and the connecting beam (2) is in surface contact with the loop buckle part (12).

4. The photovoltaic module and purlin reinforcement system according to claim 1, characterized in that, Two adjacent connecting beams (2) are fixedly connected through a connecting sleeve (10).

5. A photovoltaic module and purlin reinforcement system according to claim 1, characterized in that, It further includes connection node members. A number of connection nodes for connecting photovoltaic modules are respectively provided on each purlin (5). The connection nodes on the same purlin (5) are located between the purlin end reinforcement components. The connection node members are respectively inserted at each connection node of the purlin (5). The connection node members include a support member (6). The cross-section of the support member (6) is in a "T" shape. The web of the support member (6) is longitudinally inserted into the open slot of the purlin (5) and the plug-in surfaces of the two are in contact. The two side wings of the support member (6) are in contact with the two side wings of the purlin (5). The left and right adjacent photovoltaic modules are respectively fixed on the two side wings of the support member (6) through a first bolt assembly (7). The two side wings of the support member (6) and the two side wings of the purlin (5) are also fixedly connected through the first bolt assembly (7).

6. The photovoltaic module and purlin reinforcement system according to claim 1, wherein The connection node member further includes an outer wrapping member (8) provided below the support member (6). The cross-section of the outer wrapping member (8) is in a "channel" shape. The open slot of the outer wrapping member (8) is inserted into the web of the purlin (5) and the plug-in surfaces of the two are in contact. The two side wings of the outer wrapping member (8) are in contact with the two side wings of the purlin (5). The two side wings of the support member (6), the two side wings of the purlin (5), and the two side wings of the outer wrapping member (8) are sequentially fixedly connected through the first bolt assembly (7).

7. The photovoltaic module and purlin reinforcement system according to claim 1, wherein The web of the support member (6) and the web of the purlin (5) are fixedly connected through a second bolt assembly (9).

8. The photovoltaic module and purlin reinforcement system according to claim 2, characterized in that, The web of the outer wrapping member (8), the web of the support member (6), and the web of the purlin (5) are fixedly connected through a second bolt assembly (9).

9. The photovoltaic module and purlin reinforcement system according to claim 1, wherein, The size of the connection node member in the length direction of the purlin (5) is 2 - 3 cm, and the connection node member is flush with the edge of the purlin (5) in the width direction of the purlin (5).

10. A photovoltaic module and purlin reinforcement system according to claim 2, wherein The thickness of the two flanges on both sides of the support member (6) is 1 cm, and the thickness of the outer wrapping member (8) is 1 cm.

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