CN114598248A - Novel space cable net photovoltaic support system - Google Patents
Novel space cable net photovoltaic support system Download PDFInfo
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- CN114598248A CN114598248A CN202210253257.2A CN202210253257A CN114598248A CN 114598248 A CN114598248 A CN 114598248A CN 202210253257 A CN202210253257 A CN 202210253257A CN 114598248 A CN114598248 A CN 114598248A
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- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 5
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 239000002356 single layer Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 210000000278 spinal cord Anatomy 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/70—Arrangement of stationary mountings or supports for solar heat collector modules with means for adjusting the final position or orientation of supporting elements in relation to each other or to a mounting surface; with means for compensating mounting tolerances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the technical field of photovoltaic infrastructure, and relates to a novel space cable net photovoltaic support system. A novel space cable net photovoltaic supporting system mainly comprises ridge cables and valley cables which are alternately arranged in parallel, and oblique cables for connecting the ridge cables and the valley cables; two ends of the ridge cable and the valley cable are respectively fixed at the top of the swing bracket; the bottom of the swing bracket is hinged to the ground embedded part; and arranging a supporting cable in a plane perpendicular to the direction of the ridge cable, and fixing a photovoltaic module bracket on the supporting cable. The design of herringbone swing high and low columns is adopted, large-section cross beams do not need to be erected at the end parts, the middle part of the herringbone swing high and low columns is provided with no upright column, the herringbone swing high and low columns are suitable for various complex terrains, through long ridge cables and valley cables which are alternately arranged are connected with the inclined cables through V-shaped cable nodes to form a large-span space cable net system without support in the middle, the system is good in integrity, three-dimensional rigidity is guaranteed, and reliable and stable support is provided for photovoltaic modules.
Description
Technical Field
The invention belongs to the technical field of photovoltaic infrastructure, and relates to a novel space cable net photovoltaic support system.
Background
In order to respond to the national call for energy conservation and emission reduction, the photovoltaic power generation technology is one of the focus points of the current energy development. With the large-scale construction of photovoltaic power generation projects, site conditions become increasingly complex, including: desert, gobi, mudflat, fishpond, sewage plant, mountain land, roof, etc. In order to adapt to different and complex terrain conditions, flexible photovoltaic supports have been proposed and widely used. Compare fixed rigidity photovoltaic support, adopt flexible photovoltaic support to have obvious advantage, include: (1) the self weight is small, the steel consumption is small, the number of the foundations is small, and the manufacturing cost is low; (2) the large-span overhead ground structure has the characteristic of large span, is suitable for various landform characteristics, and increases the utilization rate of environmental space; (3) the preassembly is strong, and the construction period is short. With the development of certain terrains (such as desert, plain and the like) with good conditions, the flexible photovoltaic bracket has wide application prospect under the background of national popularization of fishing light complementation, agricultural light complementation and complex mountain land photovoltaics.
In the design of the current photovoltaic power station project, the flexible photovoltaic support generally adopts a single-layer suspension cable structure and a prestressed cable truss structure. The single-layer suspension cable structure is a variable system, and is easy to generate larger mechanical displacement under the action of wind load and asymmetric load, which is unfavorable for the photovoltaic module; moreover, the rigidity in the wind suction direction is small; in addition, to reduce midspan deflection, support posts are often provided in the midspan. The prestressed cable truss scheme is an effective way for solving the problems of small rigidity and unstable shape of a single-layer cable structure, a compression bar or a pulling cable is tied between a bearing cable and a stabilizing cable, and the rigidity of the system is improved by applying prestress, so that the double-layer cable structure can resist external load together. In many cases, the prestressed cable truss structure has one truss as a minimum unit, and each truss is tensioned to the end cross member. Secondly, each unit has weak ability to resist out-of-plane deformation (i.e. low out-of-plane stiffness), and each truss independently resists external load, and has poor integrity. Therefore, the structural form has limited available span, and if a larger span is to be realized, a central support column is additionally arranged. For situations where it is not desirable to place support posts in midspan (e.g., large lagoons), the system would not be suitable.
Disclosure of Invention
The invention aims to provide a novel space cable net photovoltaic support system which can provide reliable and stable support for a photovoltaic module under different load effects and is suitable for various complex terrains and large-span fields.
In order to achieve the purpose, the invention adopts the technical scheme that: a novel space cable net photovoltaic supporting system mainly comprises ridge cables and valley cables which are alternately arranged in parallel, and oblique cables for connecting the ridge cables and the valley cables; two ends of the ridge cable and the valley cable are respectively fixed at the top of the swing bracket; the bottom of the swing bracket is hinged to the ground embedded part; and arranging a supporting cable in a plane perpendicular to the direction of the ridge cable, and fixing a photovoltaic module bracket on the supporting cable.
Furthermore, the top of the swinging support is fixed on a ground embedded part through a prestressed vertical inhaul cable.
Furthermore, the included angle between the plane where the swing support is located and the horizontal plane is 30-60 degrees.
Furthermore, the swing support is a herringbone swing support, and the included angle is 20-40 degrees.
Further, the herringbone rocking support comprises a herringbone rocking high column connected with the ridge cable and a herringbone rocking low column connected with the valley cable.
Furthermore, the oblique cables are respectively connected with V-shaped cable clamps fixed on the ridge cables and the valley cables, and a continuous M-shaped oblique cable net is formed between the adjacent ridge cables and valley cables.
Furthermore, the branch cables are connected with the linear cable clips on the ridge cables and are arranged between the adjacent ridge cables in parallel.
Further, the inclination angle between the photovoltaic module support and the ridge cable plane is 10-39 degrees.
Compared with the existing flexible photovoltaic support, the novel space cable net photovoltaic support system provided by the invention has the following beneficial effects:
(1) the large span can be realized, and the middle part of the large span is free of an upright column, so that the large span is suitable for various complex terrains;
(2) the system has good integrity, the three-dimensional rigidity is ensured, and reliable and stable support is provided for the photovoltaic module;
(3) the stress form of the herringbone rocking column is simple, and the purpose that no beam is arranged at the end part is achieved.
Drawings
Fig. 1 is an overall schematic view of a novel space cable net photovoltaic support system in an embodiment of the invention;
FIG. 2 is a schematic structural view of a herringbone rocking support and a vertical inhaul cable;
FIG. 3 is a schematic view of a connection node configuration of ridge cables, valley cables and oblique cables;
FIG. 4 is a schematic structural view of a V-shaped cable clamp;
FIG. 5 is a schematic view of a connection node structure of a spinal cord and a branch cord;
FIG. 6 is a schematic view of the installation of the supporting cables, the angle iron bracket and the photovoltaic module;
in the figure: 1. a spinal cord; 2. gusuo; 3. a stay cable; 4. a herringbone swinging high column; 5. a herringbone rocking low column; 6. a high column vertical stay; 7. a short column vertical stay; 8 cables; 9. an angle iron bracket; 10. a photovoltaic module; 11. a ground surface; 12. an independent foundation; 13. a strip foundation; 14. a vertical cable anchoring end; 15. a column top node; 16 rivet hinged joints; 17 a ridge cable V-shaped cable clamp; 18. a V-shaped guy cable clamp; 19. a linear cable clamp; a U-shaped cable clamp.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention is described by taking a novel space cable net photovoltaic support system which is erected in a space with the span of 72m, the length of 68m and the height of 6m as an example.
As shown in figure 1, the novel space cable net photovoltaic support system provided by the invention mainly comprises ridge cables 1, valley cables 2, oblique cables 3, herringbone swinging high columns 4, herringbone swinging low columns 5, high column vertical cables 6, low column vertical cables 7, supporting cables 8 and angle steel brackets 9.
The ridge cord 1 and the valley cord 2 which are alternately and flatly arranged form a ridge cord plane and a valley cord plane respectively, and the adjacent ridge cord 1 and the valley cord 2 are connected through the oblique cord 3 to form a space cord network with alternately continuous ridges and valleys. The two ends of the ridge cable trend are respectively provided with a herringbone rocking high column 4 and a herringbone rocking low column 5. Two ends of the ridge cable 1 are connected with the top of the herringbone rocking high column 4, and two ends of the valley cable 2 are connected with the top of the herringbone rocking low column 5.
The heights of the herringbone rocking high column 4 and the herringbone rocking low column 5 are respectively 6m and 3m, the distance between the tops of the herringbone rocking high column and the herringbone rocking low column is 3.4m, and the herringbone included angles are both 30 degrees, as shown by an angle beta in fig. 2. The included angles between the planes of the herringbone rocking high columns 4 and the herringbone rocking low columns 5 and the horizontal plane are both 45 degrees, and the included angle is shown as an angle alpha in fig. 2.
As shown in figure 2, the column bases of the herringbone rocking high column 4 and the herringbone rocking low column 5 are anchored on the strip foundation 13 on the bottom surface 11 in a rivet hinge mode, and the bending moment is released through a rivet hinge joint 16, so that the column bases only bear the action of axial pressure. The top of the herringbone swinging high column 4 and the herringbone swinging low column 5 are respectively fixed with an independent foundation 12 on the ground 11 through vertical cable anchoring ends 14 of a prestressed high column vertical cable 6 and a prestressed low column vertical cable 7. The independent foundation 12 and the strip foundation 13 are both embedded parts of the ground 11. The top nodes 15 of the herringbone swinging high columns 4 and the herringbone swinging low columns 5 are fixed with the steel plates with holes by adopting a welding process, so that the ridge cables 1, the valley cables 2, the high column vertical cables 6 and the low column vertical cables 7 can be conveniently connected.
The ridge cable 1 is connected with the oblique cable 3 through a ridge cable V-shaped cable clamp 17, the valley cable 2 is connected with the oblique cable 3 through a valley cable V-shaped cable clamp 18, and the ridge cable 1, the valley cable and the oblique cable form an integral stress system under the combined action of the ridge cable and the oblique cable. As shown in fig. 3, the ridge cable V-shaped cable clips 17 are fixed on the ridge cable 1 at intervals, the valley cable V-shaped cable clips 18 are fixed on the valley cable 2 at intervals, and the interval between the adjacent ridge cable (or valley cable) V-shaped cable clips is 8 m. The ridge cable V-shaped clips 17 and the valley cable V-shaped clips 18 are arranged alternately in space. Each valley cord V-shaped cord clip 18 is located between two adjacent ridge cord V-shaped cord clips 17, preferably in an intermediate position.
In the direction along the ridge and valley, each ridge V-shaped clip 17 engages with two adjacent valley V-shaped clips 18, while each valley V-shaped clip 18 engages with two adjacent ridge V-shaped clips 17.
In the direction perpendicular to the course of the ridges and valleys, each ridge V-shaped clip 17 likewise engages two adjacent valley V-shaped clips 18, each valley V-shaped clip 18 in turn engaging two adjacent ridge V-shaped clips 17.
As shown in fig. 4, the ridge cable V-shaped cable clamp 17 and the valley cable V-shaped cable clamp 18 have the same structure and are composed of two V-shaped steel plates with U-shaped grooves in the middle and four holes on two sides. The upper and lower V-shaped steel plates with U-shaped grooves are fixed on the ridge cable 1 and the valley cable 2 by four bolts, and four holes on two sides are respectively connected with cable heads of four oblique cables. The included angle of the two V-shaped cable clamps is 120 degrees. A continuous network of M-shaped ripcords is formed between adjacent ridge and valley cords.
In addition, parallel supporting cables 8 perpendicular to the spinal cables 1 are arranged in the spinal cable plane formed by the spinal cables 1, and a photovoltaic module 10 mounting platform is established, as shown in fig. 1, and only a small part of the supporting cables is shown in fig. 1. In practical application, the supporting cables are arranged on the whole spinal cable plane, and the photovoltaic modules can be distributed on the whole spinal cable plane.
As shown in fig. 5, the supporting cables 8 are arranged in parallel between the adjacent spinal cables 1 through a linear cable clamp 19, wherein the distance between the adjacent supporting cables is 0.45m, the linear cable clamp 19 is formed by fixing two upper and lower steel plates with U-shaped grooves on the spinal cables 1 by using two bolts, and openings at both ends are connected with cable heads of the supporting cables 8. Two spinal branch cables are a set of, support angle steel support 9 and photovoltaic module 10 jointly, and the interval between every group is adjusted according to photovoltaic module size, inclination and the condition of sheltering from, and in this embodiment, the group interval is 0.2 m.
As shown in fig. 6, the photovoltaic module 10 is mounted on the angle iron bracket 9 by a buckle, and the angle iron bracket 9 is fixed on the two support cables 8 by four U-shaped cable clamps 20. The photovoltaic module 10 is 880mm × 510mm in size, the angle steel support 9 is formed by welding equal-edge angle steel, the size of the angle steel support is 880mm × 480mm × 175mm, and the inclination angle is 20 degrees. The U-shaped cable clamp 20 consists of a threaded U-shaped round steel and two nuts.
The novel space cable net photovoltaic support system disclosed by the invention has the advantages that the design of herringbone swinging high and low columns is adopted, so that a large-section cross beam does not need to be erected at the end part, a vertical column does not exist in the middle part, the novel space cable net photovoltaic support system is suitable for various complex terrains, and the span, the length and the height of the space cable net photovoltaic support system can be designed according to the field size and the terrain conditions. Wherein, the span is along the ridge cable direction, and the length is perpendicular to the ridge cable direction. The through long ridge cables and the valley cables which are alternately arranged are connected with the oblique cables through the V-shaped cable nodes to form a large-span space cable net system without support in the middle. Wherein the ridge cable is the bearing cable, and the valley cable is the stable cable, and the two and oblique cable combined action for three directions (especially vertical) of system all have great rigidity, provide reliable and stable support for photovoltaic module. The spatial cable net rack is arranged on the inclined herringbone swinging high and low columns, and the prestressed vertical cables are tensioned at the column tops of the high and low columns to form a stable spatial stress system with good integrity. The herringbone swinging column base releases bending moment by adopting a hinge constraint mechanism, so that the herringbone swinging column base only bears the action of axial pressure. The structure has simple stress form and convenient design, and achieves the purpose that the end part has no beam.
Claims (8)
1. The utility model provides a novel space cable net photovoltaic support system which characterized in that: the cable mainly comprises ridge cables and valley cables which are alternately arranged in parallel, and oblique cables which are connected with the ridge cables and the valley cables; two ends of the ridge cable and the valley cable are respectively fixed at the top of the swing bracket; the bottom of the swing bracket is hinged to the ground embedded part; and arranging a supporting cable in a plane perpendicular to the direction of the ridge cable, and fixing a photovoltaic module bracket on the supporting cable.
2. The novel space cable net photovoltaic support system according to claim 1, characterized in that: the top of the swing bracket is fixed on a ground embedded part through a prestressed vertical inhaul cable.
3. The novel space cable net photovoltaic support system according to claim 1, characterized in that: the included angle between the plane where the swing support is located and the horizontal plane is 30-60 degrees.
4. The novel space cable net photovoltaic support system according to claim 1, characterized in that: the swing support is a herringbone swing support, and the included angle is 20-40 degrees.
5. The novel space cable net photovoltaic support system according to claim 4, characterized in that: the herringbone rocking support comprises a herringbone high column connected with the ridge cable and a herringbone low column connected with the valley cable.
6. The novel space cable net photovoltaic support system according to any one of claims 1 to 5, characterized in that: the oblique cables are respectively connected with V-shaped cable clamps fixed on the ridge cables and the valley cables, and a continuous M-shaped oblique cable net is formed between the adjacent ridge cables and valley cables.
7. The novel space cable net photovoltaic support system according to any one of claims 1-5, characterized in that: the supporting cables are connected with the linear cable clips on the ridge cables and are arranged between the adjacent ridge cables in parallel.
8. The novel space cable net photovoltaic support system according to any one of claims 1 to 5, characterized in that: the inclination angle between the photovoltaic module support and the ridge cable plane is 10-39 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210253257.2A CN114598248A (en) | 2022-03-15 | 2022-03-15 | Novel space cable net photovoltaic support system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210253257.2A CN114598248A (en) | 2022-03-15 | 2022-03-15 | Novel space cable net photovoltaic support system |
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| CN114598248A true CN114598248A (en) | 2022-06-07 |
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| CN202210253257.2A Pending CN114598248A (en) | 2022-03-15 | 2022-03-15 | Novel space cable net photovoltaic support system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116876662A (en) * | 2023-03-25 | 2023-10-13 | 北京工业大学 | Large-span double-truss prestressed CFRP suspension belt truss structure |
| CN117013931A (en) * | 2023-07-20 | 2023-11-07 | 神龙拜耳科技衡水股份有限公司 | Photovoltaic panel group suitable for complicated slope topography |
-
2022
- 2022-03-15 CN CN202210253257.2A patent/CN114598248A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116876662A (en) * | 2023-03-25 | 2023-10-13 | 北京工业大学 | Large-span double-truss prestressed CFRP suspension belt truss structure |
| CN117013931A (en) * | 2023-07-20 | 2023-11-07 | 神龙拜耳科技衡水股份有限公司 | Photovoltaic panel group suitable for complicated slope topography |
| CN117013931B (en) * | 2023-07-20 | 2024-01-23 | 神龙拜耳科技衡水股份有限公司 | Photovoltaic panel group suitable for complicated slope topography |
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