CN217483014U

CN217483014U - Large-span cable-stayed stable flexible photovoltaic support system

Info

Publication number: CN217483014U
Application number: CN202220783215.5U
Authority: CN
Inventors: 刘海波; 刘玉亮; 甘乐; 陶铁铃; 姜军倪; 袁博; 付文军; 党莹颖; 张顺; 徐峰
Original assignee: Changjiang Institute of Survey Planning Design and Research Co Ltd
Current assignee: Changjiang Institute of Survey Planning Design and Research Co Ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-23
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to a photovoltaic power generation technical field, concretely relates to large-span draws to one side and stabilizes flexible photovoltaic mounting system. Including prestressed cable structure and support post, the support post top is fixed with the both ends of prestressed cable structure, the support post includes the triangle-shaped supporter and bridges in stand crossbeam and the cantilever beam at each triangle-shaped supporter top, the triangle-shaped supporter includes upright post, stand bracing and cantilever bar, upright post is located the stand bracing outside and both are the connection of falling triangle-shaped, cantilever bar one end is fixed with upright post top, the other end is fixed and extends forward with stand bracing top and forms the extension end, stand crossbeam is fixed with each upright post top, the cantilever beam is fixed with the extension end of each cantilever bar, prestressed cable structure includes main cable and bearing cable, the both ends and the stand crossbeam of main cable are connected, the both ends and the cantilever beam of bearing cable are connected. The system enables the span of the flexible photovoltaic support to be increased to about 70-80m and has better stress characteristics.

Description

Large-span cable-stayed stable flexible photovoltaic support system

Technical Field

The utility model relates to a photovoltaic power generation technical field, concretely relates to large-span draws to one side and stabilizes flexible photovoltaic mounting system.

Background

The photovoltaic power generation energy density is low, the occupied area of a power station is large, along with the continuous promotion of the photovoltaic process, the flat and open land resources are less and less, and many photovoltaic power stations have to be considered to be built in regions with complex terrain conditions, multiple functions, larger gradient and severe hydrological conditions, such as flood inundation regions, water channels, sewage treatment plants, vertical and horizontal mountainous regions of gullies and the like. However, due to the limitation of the terrain, the mountable area of the ground fixed photovoltaic support in the areas is small, the construction is difficult, and the economical efficiency is poor. As a novel photovoltaic support, the flexible support can adapt to more complex terrains by utilizing the characteristics of large span and few foundations, and has wide application prospect.

At present, upright columns are mostly installed on photovoltaic flexible supports at intervals of 30-50m to serve as middle supports, but in many scenes, the upright columns are required to be large in interval and any device is not allowed to be installed in the middle, such as river channels with navigation functions, south-to-north water diversion main canals, plant roofs and the like.

Patent CN109921726A proposes a flexible photovoltaic support, which utilizes mounting cables, bearing cables, and columns to support photovoltaic modules, and the solution is simple in structure but only suitable for the situation where the column spacing is about 30-40m, and as the column spacing increases, the prestress of the cables and the load borne by the columns increase, which easily causes structural damage. Patent CN108400750A proposes a cable-stayed flexible photovoltaic support unit and a photovoltaic support, where higher upright posts are installed at two ends of a prestressed cable, and an inclined cable mode is adopted to provide upward support for the prestressed cable to reduce deflection, but the upright posts in the scheme generate shadows to photovoltaic modules due to too high height, which affects the power generation capacity; patent CN214228159U provides a flexible photovoltaic support and photovoltaic array, and this photovoltaic array is provided with the horizontal stabilizing cable between two stands and is used for reinforcing array torsional rigidity, and nevertheless the stabilizing cable passes through the stake foundation anchor in the middle of the stand interval, and is difficult to application scenes such as river course and factory building stake foundation construction.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a large-span draws stable flexible photovoltaic mounting system to one side to the defect that prior art is directed against exactly for flexible photovoltaic support's span increases to have better atress characteristic when about 70-80 m.

The utility model provides a large-span cable-stayed stable flexible photovoltaic support system, which comprises a prestressed cable structure and support columns arranged at two ends of the prestressed cable structure, wherein the top of each support column is fixed with two ends of the prestressed cable structure, the bottom of each support column is fixed with the ground, each support column comprises triangular support bodies which are uniformly distributed along the y-axis direction, and a column beam and a cantilever beam which are bridged at the top of each triangular support body, each triangular support body comprises an upright column, an upright column inclined strut and a cantilever rod, the upright column is positioned at the outer side of the upright column inclined strut, the upright column and the upright column inclined strut are connected in an inverted triangle, the elevations of the upright column and the upright column inclined strut are the same, one end of the cantilever rod is fixed with the top of the upright column along the x-axis direction, the other end of the cantilever rod is fixed with the top of the upright column inclined strut and extends forwards to form an extending end, the column beam is fixed with the tops of the upright columns, the cantilever beam is fixed with the extending end of each cantilever rod, the prestressed cable structure comprises a plurality of main cables and bearing cables, the main cables extend along the x-axis direction and are used for supporting the photovoltaic module, two ends of each main cable are connected with the column beam, and two ends of each bearing cable are connected with the cantilever beam;

the length direction of the main rope is the x-axis direction, and the direction perpendicular to the x-axis in the horizontal plane is the y-axis direction.

Preferably, the support column further comprises a column stay cable, the column stay cable is a prestressed cable, one end of the column stay cable is fixed to the top of the upright column, and the other end of the column stay cable is fixed to the ground.

Preferably, the bearing cable is arranged below the main cable through a stable structure and is in a downward convex shape.

Preferably, a bearing cable is arranged between every two main cables.

It is comparatively preferred, the prestressed cable structure includes the limit cable that extends and lie in both sides along the x axle direction, stable structure includes oblique pull stabilizing cable, horizontal stabilizing cable and stabilizing support pole, stabilizing support pole is along y axle direction evenly distributed, stabilizing support pole is the V-arrangement, every stabilizing support pole top is equallyd divide and is do not connected with two main lines, horizontal stabilizing cable and bearing cable all are connected with each stabilizing support pole's bottom, the length direction of horizontal stabilizing cable is along y axle direction, horizontal stabilizing cable both ends are connected to limit cable and two lower extensions formation oblique pull stabilizing cable, it is fixed with ground to pull stabilizing cable to one side.

Preferably, the fixed point of the stay cable and the ground and the fixed point of the support upright column and the ground on the same side have the same x coordinate.

Preferably, the x-axis direction is the east-west direction, the y-axis direction is the north-south direction, and the support columns are arranged on two sides of the construction forbidden area.

Preferably, the connection angle between the upright post and the upright post inclined strut is 30-60 degrees.

Preferably, the photovoltaic modules are arranged on the main cables, and one row of photovoltaic modules is arranged on every two main cables.

Preferably, the length direction of the photovoltaic module is perpendicular to the length direction of the main cable.

The beneficial effects of the utility model are that:

1. a triangular inclined strut upright post is adopted, and a cantilever rod is provided with an extending end, so that a cantilever beam is closer to the center position. The cantilever rod and cantilever beam structure can reduce the span of the bearing cable between the east and west cantilever beams of the photovoltaic system, thereby greatly reducing the tension of the bearing cable; the cantilever beam provides vertical upward supporting force for the main cable, vertical deformation and tension of the main cable are reduced, the diameter of the prestressed cable can be reduced, and the safety of the structure in a large-span application scene is improved.

2. The structure of the side cable and the stayed stabilizing cable is arranged, and the horizontal stabilizing cable is anchored to the positions near the stand columns on the two sides after being turned by the side cable, so that the advantage that the stable horizontal cable improves the overall rigidity of the flexible photovoltaic support is kept, the ground installation of an anchoring foundation between the stand columns on the two sides is avoided, and the structure is suitable for the construction forbidden region between the stand columns.

3. The inclined strut of the upright column has a supporting effect on the cantilever rod, so that the bending moment at the end part is reduced, and the length of the cantilever rod can be extended; the stand bracing is arranged in the middle part of the cantilever bar, so that the problem that the angle of the stand bracing is too large and the supporting effect is poor is avoided, the use amount of steel is saved, and the cost is reduced.

Drawings

Fig. 1 is a schematic view of the photovoltaic module according to the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic cross-sectional view of a stabilization construct;

FIG. 5 is a front view of the present invention;

fig. 6 is a schematic structural diagram of the support pillar of the present invention.

In the figure: 1. supporting the upright post; 2. a prestressed cable structure; 3. stabilizing the structure; 4. a ground surface; 5. a photovoltaic module; 11. a vertical column; 12. an upright column diagonal bracing; 13. a cantilever bar; 14. a column cross beam; 15. a cantilever beam; 16. a stand column stay cable; 21. a main rope; 22. a load bearing cable; 23. a border rope; 31. a cable-stayed stabilizing cable; 32. a horizontal stabilizing cable; 33. stabilize the bracing piece.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

This embodiment provides a possible solution to the system, which mainly comprises a support column 1, a prestressed cable structure 2 and a stabilizing structure 3.

The supporting upright post 1 is used for fixedly supporting the prestressed cable and the photovoltaic module 5 at a position with a certain height away from the ground, and the supporting upright post 1 comprises an upright post 11, an upright post inclined strut 12, a cantilever rod 13, an upright post cross beam 14, a cantilever cross beam 15 and an upright post inclined stay cable 16.

The prestressed cable structure 2 adopts a prestressed cable to support the photovoltaic module 5, and comprises a main cable 21, a bearing cable 22 and a side cable 23.

The stabilizing structure 3 is used for reducing the deformation of the prestressed cable structure 2 and enhancing the torsional rigidity of the system, and comprises a stayed stabilizing cable 31, a horizontal stabilizing cable 32 and a stabilizing support rod 33.

The upright post 11 and the upright post inclined strut 12 are fixed on the ground by sharing a concrete foundation, the upright post 11 is installed perpendicular to the horizontal plane, the upright post inclined strut 12 and the upright post 11 are installed at a certain included angle, and the top ends of the upright post 11 and the upright post inclined strut 12 are located on the same horizontal plane.

After the upright post stay cables 16 are tensioned, one end of each upright post stay cable is connected with the top end of each upright post 11, the other end of each upright post stay cable is anchored on the ground through a concrete foundation, and the stay cables apply certain pretension to balance the bending moment of each upright post 11.

The cantilever rod 13 is installed at the top ends of the upright post 11 and the upright post inclined strut 12, one end of the cantilever rod starts from the top end of the upright post 11, and the other end of the cantilever rod extends for a certain distance to the top end of the upright post inclined strut 12.

The column cross member 14 is mounted on the top end of each upright column 11 and rigidly connected to the upright column 11 and the cantilever rod 13.

The cantilever beam 15 is vertically fixed to the end of the cantilever rod 13 from which it extends.

Preferably, the included angle between the upright post 11 and the upright post inclined strut 12 is 30-60 degrees, and the material is selected from a concrete pile or profile steel.

Preferably, the cantilever beam 13, the column beam 14 and the cantilever beam 15 are made of section steel, and the connection mode between the upright column 11 and the column diagonal brace 12 is welding or bolt connection.

The main cable 21 applies prestress, two ends of the main cable are fixed on the upright post cross beam 14 by anchors, the main cable is approximately in a horizontal straight line shape, and a vertical upward supporting force is provided on the cantilever cross beam 15 through the cantilever cross beam 15. Two main cables 21 are arranged on the photovoltaic modules 5 in a row, and the positions of the main cables 21 are matched with the inclination angle and the mounting hole positions of the photovoltaic modules 5.

The bearing cable 22 applies prestress, two ends of the bearing cable are fixed on the cantilever beam 15 by anchors, and the bearing cable 22 and the main cable 21 are connected through a stable support rod 33 and are in a downward convex shape.

The edge cable 23 applies prestress, two ends of the edge cable are fixed on the cantilever beam 15 through anchorage devices, and the photovoltaic module 5 is not installed on the edge cable 23.

The stabilizing support rod 33 is formed by two rigid rods in an included angle arrangement, the lower end of the stabilizing support rod is connected with the horizontal stabilizing cable 32, and the upper end of the stabilizing support rod is connected with the two corresponding main cables 21.

Preferably, the stable support rod is connected to the main cable 21 by a bolt.

The horizontal stabilizing cable 32 is prestressed and arranged in a straight line in the direction perpendicular to the bearing cable 22 and connected with the bottom of the stabilizing support rod. The two ends of the horizontal stabilizing cable 32 are obliquely pulled to the side cable 23.

The inclined stable cable 31 and the horizontal stable cable 32 are the same steel cable, and the horizontal stable cable 32 is inclined to the side cable 23 and then is inclined to the concrete foundation near the upright post through a steering gear on the side cable 23.

Example two

Fig. 1 to 6 are schematic structural diagrams illustrating a large-span cable-stayed stable flexible photovoltaic support system according to a preferred embodiment of the present application, and for convenience of description, only the parts related to the present embodiment are shown, which are detailed as follows:

the system comprises a support upright post 1, a prestressed cable structure 2 and a stable structure 3. The supporting upright posts 1 are used for providing supporting force for the prestressed cable structure 2 and the photovoltaic module 5, so that the prestressed cable structure and the photovoltaic module are kept at a certain position higher than the ground 4, and a construction forbidden area is arranged in the middle of the ground 4. The photovoltaic modules 5 are arranged vertically, facing south.

The supporting upright post 1 consists of six structures including an upright post 11, an upright post inclined strut 12, a cantilever rod 13, an upright post cross beam 14, a cantilever cross beam 15 and an upright post inclined stay cable 16, and is mainly used for supporting the prestressed cable structure 1 and the photovoltaic module 5 to be stably kept at a certain height above the ground under the action of wind load and snow load. The distance between the upright columns 11 in the east-west direction is about 80m, and the distance between the upright columns in the north-south direction is about 3 m. The upright post 11 and the upright post inclined strut 12 are connected in an inverted triangle, the tops of the upright post and the upright post inclined strut are same in elevation, the bottoms of the upright post and the upright post inclined strut are mutually rigidly connected, the connection angle is 30-60 degrees, and the upright post inclined strut can be made of section steel or concrete piles. The cantilever rod 13 is placed on the top of the upright post 11 and the upright post inclined strut 12 and extends out for a certain length. The column beam 14 and the cantilever beam 15 are respectively fixed on the top end of the upright column 11 and the extending end of the cantilever rod 13, the material is preferably steel section, and the fixing form is welding or bolt connection. The length of the cantilever rod 13 can reach 8-15m, namely, the distance between the cantilever beams 15 on the east and west sides of the photovoltaic system is reduced by 16-30 m. The vertical column stay cable 16 adopts a prestressed steel strand, one end of which is fixed on the top of the vertical column 11, and the other end of which is anchored on the ground 4 through a concrete foundation for reducing the bottom bending moment of the vertical column.

The prestressed cable structure 2 is used for fixing and supporting the photovoltaic module 5, mainly adopts prestressed steel strands which are arranged in the east-west direction and comprises a main cable 21, a bearing cable 22 and a side cable 23. The two ends of the main cables 21 are fixed on the upright post cross beams 14 on the two sides, each row of photovoltaic modules 5 is arranged on the two main cables 21, and the distance between the main cables 21 is determined according to the inclination angle and the mounting hole position of the photovoltaic modules 5. The cantilever beam 15 provides a vertical upward supporting force for the main cable 21 through the connecting structure, and reduces deformation and tension of the main cable 21. The bearing cable 22 is arranged in the middle of the main cable 21, is connected with the main cable 21 through the connecting stabilizing structure 3, is downwards convex, and can reduce the deformation and tension of the main cable 21 after prestress is applied, thereby improving the safety of the structure. Because the bearing cables 22 are only connected to the cantilever beam 15, the distance between the middle section of the upright post 11 and the cantilever beam 15 is small, the bearing cables 22 are not arranged, and only two main cables 21 are adopted to provide support for the photovoltaic module 5. The side cable 23 is a prestressed steel strand, is used for steering the stable structure 3 and is not used for supporting the photovoltaic module 5, two ends of the side cable 23 are fixed on the cantilever beam 15 by using an anchorage device, and the side cable 23 does not have a load-bearing function, so that the pretension of the side cable 23 is smaller than that of the main cable 21 and the load-bearing cable 22, the photovoltaic module is not installed, and the load-bearing cable 22 is not arranged below the side cable 23.

The stabilizing structure 3 is mainly used for resisting deformation and torsion of a photovoltaic system caused by wind load in the north-south direction, and consists of a stay stabilizing cable 31, a horizontal stabilizing cable 32 and a stabilizing support rod 33, and a plurality of stabilizing structures 3 are arranged between the east-west spans of the vertical columns 11. The horizontal stabilizing cable 32 is fixedly connected with the bearing cable 22 through a bolt connecting piece and is arranged in the vertical direction, and meanwhile, the connecting point is connected with a stabilizing support rod 33. The stabilizing support bar 33 is in the shape of an inverted triangle, and the top of the stabilizing support bar is connected with the two main ropes 21 respectively, as shown in fig. 4. The inclined and stable cable 31 and the horizontal and stable cable 32 are the same steel strand, the horizontal and stable cable 32 passes through the bearing cable 22 at the north and south sides, is obliquely pulled upwards to the side cable 23, passes through the steering structure on the side cable 23, and is obliquely pulled downwards to the anchoring foundation near the upright post 11, as shown in fig. 2 and 3.

The utility model discloses mainly be applicable to span about 80m such as river course, sewage treatment pond, factory building, forbid in the middle of the span construction, traditional scheme has the special scene of security hidden danger. The utility model adopts the triangular supporting upright posts 1 to reduce the connection space of the bearing cables 22, thus effectively reducing the cable tension; vertical force is provided for the main cable 21 at the cantilever beam 15, deformation and cable tension of the main cable 21 are reduced, and wind resistance and stability of the whole system are improved. The stabilizing structure 3 turns a plurality of inclined pull stabilizing cables 31 through the side cable 23 and then is intensively connected to the anchoring foundations on the two sides, construction in the middle of the span of the upright column 11 is avoided, the number of the anchoring foundations is reduced, and application scenes of the flexible photovoltaic support are wider.

Although the utility model discloses used more: 1. supporting the upright post; 2. a prestressed cable structure; 3. stabilizing the structure; 4. a ground surface; 5. a photovoltaic module; 11. a vertical column; 12. an upright column diagonal bracing; 13. a cantilever bar; 14. a column cross beam; 15. a cantilever beam; 16. an upright post stay cable; 21. a main rope; 22. a load bearing cable; 23. a border rope; 31. a cable-stayed stabilizing cable; 32. a horizontal stabilizing cable; 33. stabilize the bracing piece. But does not exclude the possibility of using other terms. These terms are used only for the convenience of describing and explaining the essence of the present invention, and they are to be construed as any additional limitation contrary to the spirit of the present invention.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and they should be construed as being included in the present application.

Claims

1. The utility model provides a large-span draws to one side and stabilizes flexible photovoltaic mounting system which characterized in that: the support column comprises a prestressed cable structure (2) and support columns (1) arranged at two ends of the prestressed cable structure (2), the top of each support column (1) is fixed with two ends of the prestressed cable structure (2), the bottom of each support column is fixed with the ground, each support column (1) comprises triangular support bodies uniformly distributed along the y-axis direction, and a column cross beam (14) and a cantilever cross beam (15) which are bridged at the tops of the triangular support bodies, each triangular support body comprises an upright column (11), an upright column inclined strut (12) and a cantilever rod (13), the upright column (11) is positioned at the outer side of the upright column inclined strut (12) and connected with the upright column inclined strut (12) in an inverted triangle manner, the upright column (11) and the upright column inclined strut (12) are the same in elevation, one end of the cantilever rod (13) in the length direction along the x-axis direction is fixed with the top of the upright column (11), the other end of the cantilever rod is fixed with the top of the upright column inclined strut (12) and extends forwards to form an extension end, the vertical column cross beam (14) is fixed with the top of each vertical column (11), the cantilever cross beam (15) is fixed with the extension end of each cantilever rod (13), the prestressed cable structure (2) comprises a plurality of main cables (21) and bearing cables (22) which extend along the x-axis direction and are used for supporting the photovoltaic module (5), two ends of each main cable (21) are connected with the vertical column cross beam (14), and two ends of each bearing cable (22) are connected with the cantilever cross beam (15);

wherein, the length direction of the main rope (21) is the direction of an x axis, and the direction vertical to the x axis in a horizontal plane is the direction of a y axis.

2. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 1, characterized in that: the support column (1) further comprises a column stay cable (16), the column stay cable (16) is a prestressed cable, one end of the column stay cable (16) is fixed to the top of the upright column (11), and the other end of the column stay cable is fixed to the ground.

3. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 1, characterized in that: the bearing cable (22) is arranged below the main cable (21) through the stabilizing structure (3), and the bearing cable (22) is in a downward convex shape.

4. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 1, characterized in that: a bearing cable (22) is arranged between every two main cables (21).

5. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 3, characterized in that: prestressed cable structure (2) include and extend and lie in limit cable (23) of both sides along the x axle direction, stable structure (3) are including oblique pull stabilizing cable (31), horizontal stabilizing cable (32) and stabilizing support pole (33), stabilizing support pole (33) are along y axle direction evenly distributed, stabilizing support pole (33) are the V-arrangement, every stabilizing support pole (33) top is equallyd divide and is connected with two main cables (21) respectively, horizontal stabilizing cable (32) and bearing cable (22) all are connected with the bottom of each stabilizing support pole (33), the length direction of horizontal stabilizing cable (32) is along the y axle direction, horizontal stabilizing cable (32) both ends are connected to limit cable (23) and two lower extensions form oblique pull stabilizing cable (31), oblique pull stabilizing cable (31) are fixed with ground.

6. The large-span cable-stayed stable flexible photovoltaic support system according to claim 5, characterized in that: the fixed point of the stay cable stabilizer (31) and the ground and the fixed point of the support upright post (1) and the ground on the same side have the same x coordinate.

7. The large-span cable-stayed stable flexible photovoltaic support system according to claim 1, characterized in that: the x-axis direction is east-west direction, the y-axis direction is north-south direction, and the support columns (1) are arranged on two sides of the construction forbidden area.

8. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 1, characterized in that: the connection angle between the upright post (11) and the upright post inclined strut (12) is 30-60 degrees.

9. The large-span cable-stayed stable flexible photovoltaic bracket system according to claim 1, characterized in that: the photovoltaic modules (5) are arranged on the main cables (21), and one row of photovoltaic modules (5) is arranged on every two main cables (21).

10. The large-span cable-stayed stable flexible photovoltaic support system according to claim 1, characterized in that: the length direction of the photovoltaic module (5) is perpendicular to the length direction of the main rope (21).