CN113765471A - Flexible photovoltaic support vibration damper - Google Patents
Flexible photovoltaic support vibration damper Download PDFInfo
- Publication number
- CN113765471A CN113765471A CN202110933546.2A CN202110933546A CN113765471A CN 113765471 A CN113765471 A CN 113765471A CN 202110933546 A CN202110933546 A CN 202110933546A CN 113765471 A CN113765471 A CN 113765471A
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- Prior art keywords
- plate
- photovoltaic
- vibration damping
- dovetail
- cable
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- 238000013016 damping Methods 0.000 claims abstract description 47
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 229920001903 high density polyethylene Polymers 0.000 claims description 8
- 239000004700 high-density polyethylene Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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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
- H02S20/20—Supporting structures directly fixed to an immovable object
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- 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
- H02S20/10—Supporting structures directly fixed to the ground
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a flexible photovoltaic support vibration damper, which comprises a vertical vibration damping plate, a dovetail type balance plate, a balance plate inhaul cable, a right-angle cable buckle and a tensioning cable system, wherein the dovetail type balance plate is arranged below a photovoltaic plate and a suspension cable, one end of the dovetail type balance plate is connected with the suspension cable in a tensioning mode through the balance plate inhaul cable and is fixed at the suspension cable through the right-angle cable buckle, the other end of the dovetail type balance plate is connected with the vertical vibration damping plate through an angle steel, and two ends of the dovetail type balance plate are fixed with the suspension cable and the vertical vibration damping plate through the tensioning cable system, so that the vertical vibration damping plate and the photovoltaic plate form a windward side system which is symmetrical up and down. The wind sensitive effect of the flexible support can be improved, the wind resistance of the flexible support is improved, the tearing damage of wind load to the photovoltaic component is reduced, the durability of the component is enhanced, and the power generation efficiency is improved.
Description
Technical Field
The invention discloses a flexible photovoltaic support vibration damping device, and belongs to the technical field of flexible photovoltaics.
Background
With the rapid development of photovoltaic power generation, at present, in ponds with large span, mountainous regions with complex geological conditions, regions above a wastewater collection pool and the like, development and construction of photovoltaic power generation projects have been gradually carried out, and a flexible photovoltaic support technology is applied. The flexible photovoltaic support is characterized in that prestressed steel strands (suspension cables) are tensioned between two supports, a photovoltaic plate is fixed on the suspension cables through buckles, the supports are fixed on a rigid foundation, the supports are kept stable through inclined struts, and spans in a large range can be achieved. In the flexible photovoltaic bracket system, due to the flexibility of the steel cable for supporting the photovoltaic component and the characteristic of unidirectional inclined arrangement of the photovoltaic panel, the photovoltaic panel can horizontally swing under the action of wind load.
The structure of the suspension cable and the photovoltaic plate of the existing flexible photovoltaic support is light in weight and low in frequency, and is a wind sensitive structure. In order to obtain the optimal illumination inclination angle, the photovoltaic panel needs to be obliquely arranged, and when air with a certain speed blows through the photovoltaic panel, horizontal thrust is generated on the windward side of the photovoltaic panel. The two suspension cables are steel strands with certain pretension force, the longitudinal rigidity of the two suspension cables is weak, the photovoltaic panel generates displacement in the horizontal direction under the action of the horizontal force of wind, the two suspension cables generate tension through the buckles below the photovoltaic panel, and the panel swings horizontally due to the fact that the wind speed has the characteristic of instantaneous change. When the wind load effect is increased to a certain degree, because the height difference exists between the two suspension cables, and each suspension cable is connected with the photovoltaic back plate glass through 2-3 buckles, the direction and the size difference of the force on each buckle are increased, and the photovoltaic panel is even torn through the pulling force generated by the buckles.
Disclosure of Invention
The invention provides a flexible photovoltaic support vibration damping device, which aims to overcome the defect that a steel cable for supporting a photovoltaic module can generate horizontal or vertical vibration under the action of wind load due to the flexibility of the steel cable and the characteristic that a photovoltaic plate is obliquely arranged in one direction in the conventional flexible photovoltaic support system.
The technical solution of the invention is as follows: the utility model provides a flexible photovoltaic support vibration damper, flexible photovoltaic support fixes on the span wire, and the photovoltaic board passes through the buckle to be fixed on the span wire, and its structure includes vertical damper plate 1, dovetail balance plate 2, balance plate cable, right angle cable buckle 4, taut cable system 5, dovetail balance plate 2 sets up in photovoltaic board 6 and span wire 7 below, and 2 one end of dovetail balance plate is connected with the span wire is taut through the balance plate cable to it is fixed through the right angle cable buckle in span wire department, and the other end passes through the angle steel and is connected with vertical damper plate, and 2 both ends of dovetail balance plate adopt taut cable system to fix with span wire and vertical damper plate for vertical damper plate and photovoltaic board constitute the windward side system of longitudinal symmetry.
The included angle between two arms of the dovetail type balance plate is 30-50 degrees, the length of the upper arm is 2450mm, the width of the bottom of the upper arm is 258mm, the length of the lower arm is 2240mm, and the width of the bottom of the lower arm is 248 mm.
And the dovetail type balance plate is provided with a balance weight, so that the gravity center of the combined structure is lowered to the lower part of the suspension cable.
The dovetail type balance plate is made of an aluminum alloy framework, foamed polyethylene is filled in the middle of the dovetail type balance plate, HDPE materials are arranged on two sides of the dovetail type balance plate, the width of the aluminum alloy framework is 30mm, the thickness of the aluminum alloy framework is 50mm, and the thickness of the HDPE part is 4mm
The interior of the vertical damping plate is reinforced by a solid wood keel, a foamed polyethylene inner core is filled, IXPE foamed cotton is arranged at the top and the side of the vertical damping plate, and HDPE is arranged at the bottom of the vertical damping plate; IXPE foam cotton is 4mm thick, and HDPE is 4mm thick.
The vertical damping plate is 50000-60000mm long, 1800-2400mm wide, 180mm thick on the vertical high side and 90mm thick on the low side.
The two side ends of the surface of the vertical shock absorption plate are provided with hollow structures, so that wind resistance is reduced.
The flexible photovoltaic support vibration damping device is arranged in the front two rows of windward sides or leeward sides of the photovoltaic matrix, and the vertical vibration damping plates are arranged at the midspan parts of the suspension cables of the flexible photovoltaic supports and below the photovoltaic plates; in the photovoltaic matrix, two dovetail type balance plates in different rows and the same column are connected through a rigid rod, so that the lateral wind-resistant rigidity of the middle part of the flexible support in the horizontal direction is improved.
The invention has the beneficial effects that:
1) the damping plates and the photovoltaic plates which are symmetrically arranged form a windward side system which is vertically symmetrical, when airflow passes through the front side of the photovoltaic plate at a high speed, the aerodynamic force generated at the upper part and the lower part of the structure is symmetrical in size and position, so that the acting force of the flexible support in the vertical direction is balanced, and the factor that the flexible support generates vertical vibration is effectively reduced.
2) The two suspension cables in the middle of the flexible photovoltaic support are vertically connected with the dovetail type balance plate, and the dovetail type balance plate between the two rows of flexible supports is provided with the rigid rod, so that the lateral rigidity of the suspension cables of the flexible photovoltaic support is increased, and the horizontal stability of a flexible photovoltaic support system is improved.
3) The flexible support damping plate is made of a light composite material and has the characteristics of high strength, corrosion resistance and water resistance.
4) The flexible support photovoltaic project with large span can be widely applied to construction of flexible support photovoltaic projects with large wind load on ponds, fish ponds, mountainous regions and sewage treatment plants, the wind gust effect of the flexible support can be obviously reduced, the wind resistance of the flexible support is improved, the tearing damage of the wind load to the photovoltaic assembly is reduced, the durability of the assembly is enhanced, and the efficiency of photovoltaic power generation is improved.
Drawings
FIG. 1 is a schematic structural diagram of a flexible photovoltaic support horizontal vibration damping dovetail type balance plate device.
FIG. 2 is a schematic diagram of a dovetail counterbalance structure.
FIG. 3 is a schematic diagram of the outer shape and inner material of the dovetail-shaped balance plate.
FIG. 4 is a schematic view of a rigid rod attachment dovetail counterbalance plate.
Figure 5 is a schematic view of the air flow and its force.
FIG. 6 is a schematic view of the outer shape and inner material composition of the damper plate.
FIG. 7 is a schematic view of the attachment of the vertical damping plate to the flexible mount.
FIG. 8 is a schematic view of a hollow structure of the damping plate.
In the drawing, 1 is a damping plate, 2 is a balance plate, 4 is a right-angle cable buckle, 5 is a tensioning cable system, 6 is a photovoltaic plate, 7 is a suspension cable, and F1/F2 is acting force.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings.
The upper end of the dovetail type balance plate is connected with the two suspension cables below the photovoltaic plate at the midspan part of the suspension cables of the flexible photovoltaic bracket, and is tensioned with the lower end of the dovetail type balance plate through the tensioning cable system to limit the swing of the dovetail type balance plate along the direction of the suspension cables. The dovetail balance plate is connected with the photovoltaic plate, the suspension cable, the damping plate and the like as shown in figure 1.
On the other hand, the flexible support of the damping plate is added, and the balance weight is added at the front section of the balance plate, so that the gravity center of the combined structure is lowered to the position below the suspension cable at the lower position, and the wind resistance stability of the suspension cable structure at the midspan part of the flexible support is improved.
2) Dovetail type balance plate material
The dovetail type balance plate is made of light composite materials, has the characteristics of high strength, corrosion resistance and water resistance, and is shown in the attached figures 2 and 3 in the appearance and internal material composition.
3) Combined dovetail type balance plate
The balance plates in the first two rows of the photovoltaic matrix are connected through the rigid rods, so that the lateral wind-resistant rigidity of the middle part of the flexible support in the horizontal direction is improved, and the horizontal swing of the whole flexible support in an array can be effectively reduced. As shown in fig. 4.
4) Scheme for reducing vertical vibration of flexible support
The damping plates and the photovoltaic plates which are symmetrically arranged form a windward side system which is vertically symmetrical, when airflow passes through the front side of the photovoltaic plate at a high speed, the aerodynamic force generated at the upper part and the lower part of the structure is symmetrical in size and position, so that the acting force of the flexible support in the vertical direction is balanced, and the factor that the flexible support generates vertical vibration is effectively reduced. After the damping plate is added, the cross section of the flexible support flows under the action of flowing air, the air flows and the acting force of the air flows are shown in the attached drawing 5, F1 is that when air with a certain speed blows over the front surface of the photovoltaic plate, pressure perpendicular to the photovoltaic plate is generated on the windward surface of the photovoltaic plate, F2 is that the extrusion flow speed of the fast flowing air on the upper end of the photovoltaic plate is accelerated, so that the air pressure in the partial area of the upper section of the photovoltaic plate is reduced, and upward force is generated on the plate surface in the range.
5) Vertical damping plate material of flexible support
The flexible support damping plate is made of light composite materials, the damping plate has the characteristics of high strength, corrosion resistance and water resistance, and the appearance and the internal material composition of the damping plate are shown in the attached figure 6.
6) Connecting scheme of vertical damping plate and flexible support
As shown in fig. 7, the connection scheme of the damping plate and the flexible support is that a support is additionally arranged between the suspension cable and the damping plate, and the support is arranged below the photovoltaic plate and the suspension cable. The bracket is connected with the vertical damping plate through angle steel, and the bracket is connected with the suspension cable and the vertical damping plate through a tensioning cable system
The surface of the vertical damping plate is provided with a hollow structure, so that wind resistance is reduced. The hollow structures are arranged at two side ends of the damping plate. As shown in fig. 8.
Claims (8)
1. The utility model provides a flexible photovoltaic support vibration damper, flexible photovoltaic support fixes on the span wire, and the photovoltaic board passes through the buckle to be fixed on the span wire, and its characterized in that structure includes vertical shock attenuation board (1), dovetail balance plate (2), balance plate cable, right angle cable buckle (4), taut cable system (5), dovetail balance plate (2) set up in photovoltaic board (6) and span wire (7) below, and dovetail balance plate (2) one end is passed through the balance plate cable and is connected with the span wire is taut to it is fixed through the right angle cable buckle in span wire department, and the other end passes through the angle steel and is connected with vertical shock attenuation board, and dovetail balance plate 2 both ends adopt taut cable system to fix with span wire and vertical shock attenuation board, make vertical shock attenuation board and photovoltaic board constitute the windward side system of longitudinal symmetry.
2. The flexible photovoltaic bracket vibration damper according to claim 1, wherein the included angle between the two arms of the dovetail-shaped balance plate is 30-50 degrees, the length of the upper arm is 2450mm, the width of the bottom of the upper arm is 258mm, the length of the lower arm is 2240mm, and the width of the bottom of the lower arm is 248 mm.
3. The flexible photovoltaic mount vibration damping device of claim 1, wherein said dovetail counterbalance plate is provided with a counterweight to lower the center of gravity of the composite structure below the suspension cable.
4. The flexible photovoltaic bracket vibration damper according to claim 1, wherein the dovetail-shaped balance plate is made of an aluminum alloy framework, foamed polyethylene is filled in the middle of the dovetail-shaped balance plate, the two sides of the dovetail-shaped balance plate are made of HDPE materials, the aluminum alloy framework is 30mm wide and 50mm thick, and the HDPE part is 4mm thick.
5. The flexible photovoltaic bracket vibration damping device according to claim 1, wherein the vertical vibration damping plate is internally reinforced by solid wood keels, a foamed polyethylene inner core is filled in the vertical vibration damping plate, the top and the side surfaces of the vertical vibration damping plate are IXPE foamed cotton, and the bottom of the vertical vibration damping plate is HDPE; IXPE foam cotton is 4mm thick, and HDPE is 4mm thick.
6. The flexible photovoltaic bracket vibration damping device as claimed in claim 1, wherein the vertical damping plate has a length of 50000-.
7. The flexible photovoltaic bracket vibration damping device according to claim 1, wherein hollow structures are arranged at two sides of the surface of the vertical vibration damping plate to reduce wind resistance.
8. The flexible photovoltaic support vibration damping device according to claim 1, which comprises a plurality of flexible photovoltaic support vibration damping devices, wherein the flexible photovoltaic supports form a photovoltaic matrix, the flexible photovoltaic support vibration damping devices are arranged in the front two rows of the windward side or the leeward side of the photovoltaic matrix, and the vertical vibration damping plates are arranged at the midspan parts of the suspension cables of the flexible photovoltaic supports and below the photovoltaic plates; in the photovoltaic matrix, two dovetail type balance plates in different rows and the same column are connected through a rigid rod, so that the lateral wind-resistant rigidity of the middle part of the flexible support in the horizontal direction is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110933546.2A CN113765471A (en) | 2021-08-14 | 2021-08-14 | Flexible photovoltaic support vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110933546.2A CN113765471A (en) | 2021-08-14 | 2021-08-14 | Flexible photovoltaic support vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113765471A true CN113765471A (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110933546.2A Pending CN113765471A (en) | 2021-08-14 | 2021-08-14 | Flexible photovoltaic support vibration damper |
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| Country | Link |
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| CN (1) | CN113765471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809478A (en) * | 2022-04-11 | 2022-07-29 | 洛阳理工学院 | A shock insulation device for photovoltaic building roof |
-
2021
- 2021-08-14 CN CN202110933546.2A patent/CN113765471A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809478A (en) * | 2022-04-11 | 2022-07-29 | 洛阳理工学院 | A shock insulation device for photovoltaic building roof |
| CN114809478B (en) * | 2022-04-11 | 2024-01-26 | 洛阳理工学院 | Shock insulation device for photovoltaic building roof |
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Effective date of registration: 20220811 Address after: Building 6, No. 38, Xinmofan Road, Gulou District, Nanjing City, Jiangsu Province, 210003 Applicant after: NANJING GUODIAN NANZI NEW ENERGY ENGINEERING TECHNOLOGY CO.,LTD. Applicant after: STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Applicant after: Economic and technical consulting branch of China Huadian Group Co.,Ltd. Address before: Building 6, No. 38, Xinfan Road, Nanjing, Jiangsu 210003 Applicant before: NANJING GUODIAN NANZI NEW ENERGY ENGINEERING TECHNOLOGY CO.,LTD. Applicant before: Nuclear power technology branch of China nuclear power planning, design and Research Institute Co.,Ltd. Applicant before: Economic and technical consulting branch of China Huadian Group Co.,Ltd. |