CN107947711B - Concentrating type flexible double-shaft tracking photovoltaic and photo-thermal support - Google Patents
Concentrating type flexible double-shaft tracking photovoltaic and photo-thermal support Download PDFInfo
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- CN107947711B CN107947711B CN201711418030.4A CN201711418030A CN107947711B CN 107947711 B CN107947711 B CN 107947711B CN 201711418030 A CN201711418030 A CN 201711418030A CN 107947711 B CN107947711 B CN 107947711B
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- 239000000969 carrier Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000009191 jumping Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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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
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
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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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
Abstract
The invention discloses a concentrating type flexible double-shaft tracking photovoltaic and photo-thermal bracket, which comprises a north-south bearing frame and a south bearing frame which are arranged in the north-south direction, a flexible cable frame arranged between the south bearing frame and the north bearing frame, and a plurality of photovoltaic plates or photo-thermal pipes arranged on the flexible cable frame at intervals along the north-south direction; the north and south bearing frames have the same structure, and the east upright post and the west upright post are arranged at intervals from east to west; the east and west upright posts are fixedly connected through an upper cross beam and a lower cross beam to form a rectangular frame, at least one group of flexible double-shaft tracking and adjusting systems are arranged in the rectangular frame, and each flexible double-shaft tracking and adjusting system consists of a photovoltaic panel or a photo-thermal tube east and west tracking and adjusting system and a photovoltaic panel or a photo-thermal tube pitching and elevation angle adjusting system. The invention has the advantages of improving the wind-induced swing and vibration resistance of the flexible double-shaft tracking type photovoltaic support, preventing the photovoltaic panel from side turning and jumping up and down caused by large-amplitude swing in severe weather such as strong wind and the like, and achieving the purpose of improving the stability and reliability of the flexible double-shaft tracking type photovoltaic support.
Description
Technical Field
The invention relates to a double-shaft tracking type photovoltaic bracket, in particular to a concentrating type flexible double-shaft tracking type photovoltaic and photo-thermal bracket.
Background
At present, the solar photovoltaic power generation mostly adopts a mode of installing a steel frame on the ground to support a photovoltaic panel. The ground installation steelframe has the following defects: 1. the floor area is large, the requirements of the rigid support on the ground condition are high, the vegetation on the ground surface is destroyed, a large amount of steel is consumed, and the cost is high. 2. The photovoltaic panel has strong volatility, and the photovoltaic panel has short power generation time and low efficiency due to the effect of the protective glass of the photovoltaic panel front panel in the non-noon period on sunlight reflection. 3. In the existing photovoltaic support, a gear transmission structure, a push rod connecting rod structure, a hydraulic cylinder or a bearing and the like are used for the solar tracking system, the gear transmission structure and the push rod connecting rod structure are easy to damage due to vibration of the support when being used in the field, the lubricating requirements of the hydraulic system and the bearing are high, the installation and maintenance cost is high, and the service life is short.
Chinese patent publication No. CN205336197U discloses an "adjustable inclination angle flexible support", which can only realize single axis tracking, but cannot realize double axis tracking, and has low power generation efficiency; because the flexible support drives the adjustable dip angle fixing device to rotate through the crank connecting rod driving device, a speed reducing mechanism in the adjustable dip angle fixing device is in rigid connection with the multistage connecting rod and the photovoltaic platform, so that interference impact damage exists between wind-induced runout of the flexible steel cable and motor movement, and the flexible support cannot work stably and cannot be applied to actual engineering. Meanwhile, the flexible support does not solve the problem of sagging of the flexible rope caused by gravity of the flexible rope and the photovoltaic panel, the problem of jumping and swinging of the flexible rope in severe weather and the problem of structural stability caused by expansion and contraction of steel cables due to temperature change in spring, summer, autumn and winter.
The technical scheme disclosed in the Chinese patent publication No. CN106406364A provides a flexible double-shaft tracking photovoltaic bracket, and has the beneficial effects of increasing the power generation capacity of a photovoltaic power station, simplifying and stabilizing the whole system and having low cost through engineering verification, thereby well solving the problems of the flexible bracket with adjustable dip angle. However, in engineering practice, the technical solution described in patent publication CN106406364a still has the following drawbacks:
1. under the state that external constraint structural components such as flexible rods are not installed, the flexible cable frame swings and jumps greatly in severe weather such as strong wind, and the safety and stability of the whole support structure cannot be guaranteed.
2. The flexible rotary unit influences rotation of the flexible rotary unit when the flexible rotary unit is stressed in the north-south direction to deform, so that the accuracy of east-west tracking of the photovoltaic panel is influenced.
3. Under the application condition that the north-south span is very large, the middle part of the flexible cable frame sags under the action of gravity.
Disclosure of Invention
The invention aims to provide a concentrating type flexible double-shaft tracking photovoltaic and photo-thermal bracket, which is further improved by the technical scheme of the patent publication No. CN106406364A of the traditional Chinese invention.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention relates to a concentrating type flexible double-shaft tracking photovoltaic and photo-thermal bracket, which comprises a south bearing frame and a north bearing frame which are arranged in the north-south direction, a flexible cable frame arranged between the south bearing frame and the north bearing frame, and a plurality of photovoltaic plates or photo-thermal pipes arranged on the flexible cable frame at intervals in the north-south direction; the north and south bearing frames have the same structure and comprise east upright posts and west upright posts which are arranged at intervals in the east-west direction; the east and west upright posts are fixedly connected through an upper cross beam and a lower cross beam to form a rectangular frame, at least one group of flexible double-shaft tracking and adjusting systems are arranged in the rectangular frame, and each flexible double-shaft tracking and adjusting system consists of a photovoltaic plate or a photo-thermal tube east and west tracking and adjusting system and a photovoltaic plate or a photo-thermal tube depression and elevation angle adjusting system;
the east and west tracking adjustment system comprises: the first fixed pulley and the second fixed pulley are arranged on the upper beam at intervals in the east-west direction, and the first winch and the second winch are arranged on the lower beam at intervals; the rope of the first winch bypasses the first fixed pulley to form an east side large flexible rope ring, and the rope of the second winch bypasses the second fixed pulley to form a west side large flexible rope ring; a connecting rope is arranged between the east large flexible grommet and the west large flexible grommet, and two ends of the connecting rope bypass the first fixed pulley and the second fixed pulley to be respectively connected with the corresponding east large flexible grommet and west large flexible grommet;
the pitching and elevation angle adjusting system comprises a third pulley and a third winch which are arranged on the east side large flexible grommet rope at intervals up and down, and a fourth pulley and a fourth winch which are arranged on the west side large flexible grommet rope at intervals up and down; the rope of the third winch bypasses the third pulley to form an east small flexible rope ring, and the rope of the fourth winch bypasses the fourth pulley to form a west small flexible rope ring;
the flexible cable rack includes: the first and second arc hanging ropes, the first and second upper load ropes, the first and second lower load ropes and the first and second hanging strings; the first and second arc vertical cables, the first and second lower load cables and the south bearing frame are connected in the following manner: the south end points of the first arc hanging rope and the first arc anti-hanging rope are respectively connected with the upper end and the lower end of the east large flexible rope ring; the south end points of the second arc hanging rope and the second arc hanging rope are respectively connected with the upper end and the lower end of the western large flexible rope ring; the south end point of the first lower load cable is connected with the east small flexible grommet through a prestress torsion spring; the south end point of the second lower load cable is connected with a west small flexible grommet through a prestress torsion spring; the north end points of the first arc vertical rope, the second arc vertical rope, the first anti-arc vertical rope and the second anti-arc vertical rope are connected with the north bearing frame in the same way as the south bearing frame;
the first droppers are arranged between the first arc-shaped hanging ropes and the first anti-arc-shaped hanging ropes at intervals along the north-south direction; the second droppers are arranged between the second arc hanging ropes and the second anti-arc hanging ropes at intervals along the north-south direction; the two ends of the top of each photovoltaic plate or each photo-thermal tube are respectively connected with the middle parts of the first hanger and the second hanger at the corresponding positions, and the two ends of the bottom of each photovoltaic plate or each photo-thermal tube are respectively connected with the first lower load cable and the second lower load cable at the corresponding positions; the north end points of the first upper load cable and the second upper load cable are respectively connected with the top two ends of the north first photovoltaic plate or the light heat pipe, and the top two ends of each photovoltaic plate are respectively connected with the first upper load cable and the second upper load cable at corresponding positions; a first rigid cross bar is arranged between the first lower load cable and the second lower load cable and is positioned close to the south bearing frame; a second rigid cross bar is arranged between the first lower load cable and the second lower load cable and close to the north bearing frame;
the first sagged rope, the first anti-sagged rope, the second sagged rope and the second anti-sagged rope form conjugated structures respectively in the vertical direction, and meanwhile, the first sagged rope, the second sagged rope, the first anti-sagged rope and the second anti-sagged rope also form conjugated structures respectively in the horizontal direction; the first sagged rope, the first anti-sagged rope, the second sagged rope and the second anti-sagged rope form a three-dimensional conjugated structure.
The photovoltaic board is two-sided photovoltaic board, flexible cable frame below is provided with reflector device, reflector device includes rectangular rigid frame, sets up concave surface reflective membrane on the rectangular rigid frame, and four limit both ends of rectangular rigid frame are connected with arc tensioning cable respectively, and the interval is provided with a plurality of bracing pieces of downwardly extending on every limit of rectangular rigid frame respectively, every the lower extreme of bracing piece is connected with corresponding arc tensioning cable respectively and constitutes string branch structure.
The south side end and the north side end of the rectangular rigid frame are respectively connected with the corresponding south bearing frame and north bearing frame.
The invention has the advantages of improving the wind-induced swing and vibration resistance of the flexible double-shaft tracking type photovoltaic support, preventing the photovoltaic panel from side turning and jumping up and down caused by large-amplitude swing in severe weather such as strong wind and the like, and achieving the purpose of improving the stability and reliability of the flexible double-shaft tracking type photovoltaic support.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic top view of fig. 1.
FIG. 3 is a schematic view of the structure of the south or north carrier of the present invention.
Fig. 4 is a schematic structural view of embodiment 2 of the present invention.
Fig. 5 is a schematic structural view of a light reflecting device in embodiment 2 of the present invention.
Fig. 6 is a schematic view of a short span multi-stage structure according to embodiment 3 of the present invention.
Fig. 7-1 is a schematic view showing the state of the east and west large flexible grommet according to the present invention in the morning hours of summer.
Fig. 7-2 is a schematic view showing the state of the east and west large flexible grommet according to the present invention during the noon period in summer.
Fig. 7-3 are schematic views of the state of the east and west large flexible grommet according to the present invention during the summer evening hours.
Fig. 8-1 is a schematic view showing the state of the east and west large flexible grommet according to the present invention in the early winter morning period.
Fig. 8-2 is a schematic view showing the state of the east and west large flexible grommets of the present invention during the midday winter period.
Fig. 8-3 are schematic views of the state of the east and west large flexible grommet according to the present invention during the winter evening hours.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments and specific operation procedures are given by the embodiments of the present invention under the premise of the technical solution of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.
Example 1:
as shown in fig. 1, 2 and 3, the concentrating type flexible double-shaft tracking photovoltaic and photo-thermal bracket comprises a south bearing frame and a north bearing frame which are arranged in a north-south direction, a flexible cable frame arranged between the south bearing frame and the north bearing frame, and a plurality of photovoltaic panels 26 or photo-thermal pipes arranged on the flexible cable frame at intervals in the north-south direction; the north and south bearing frames have the same structure and comprise east upright posts 1 and west upright posts 2 which are arranged at intervals in the east-west direction, and the east-west upright posts 1 and 2 are fixed with an anchoring foundation through a plurality of traction wires 12.1 and 12.2; the east and west upright posts 1 and 2 are fixedly connected through an upper cross beam 3 and a lower cross beam 4 to form a rectangular frame, at least one group of flexible double-shaft tracking and adjusting systems are arranged in the rectangular frame, and each flexible double-shaft tracking and adjusting system consists of a photovoltaic panel east and west tracking and adjusting system and a photovoltaic panel depression and elevation angle adjusting system.
The east and west tracking adjustment system comprises: the first fixed pulley 5.1 and the second fixed pulley 5.2 are arranged on the upper beam 3 at intervals in the east-west direction, and the first winch 6.1 and the second winch 6.2 are arranged on the lower beam 4 at intervals; the rope of the first winch 6.1 bypasses the first fixed pulley 5.1 to form an east side large flexible grommet 7.1, and the rope of the second winch 6.2 bypasses the second fixed pulley 5.2 to form a west side large flexible grommet 7.2; a connecting rope 13 is arranged between the east large flexible grommet 7.1 and the west large flexible grommet 7.2, and two ends of the connecting rope 13 bypass the first fixed pulley 5.1 and the second fixed pulley 5.2 to be respectively connected with the corresponding east large flexible grommet 7.1 and west large flexible grommet 7.2; the connecting rope can maintain the load balance of the east-west large flexible grommet, and prevent the hoist from being damaged due to overlarge stress.
The pitch and elevation adjustment system includes: a third pulley 8.1 and a third winch 9.1 which are arranged on the east large flexible grommet 7.1 rope at intervals up and down, and a fourth pulley 8.2 and a fourth winch 9.2 which are arranged on the west large flexible grommet 7.2 rope at intervals up and down; the rope of the third winch 9.1 bypasses the third pulley 8.1 to form an east small flexible grommet 10.1, and the rope of the fourth winch 9.2 bypasses the fourth pulley 8.2 to form a west small flexible grommet 10.2; the large and small flexible grommet structures can be normally rotated and adjusted under the condition of stress deformation.
The flexible cable rack includes: first and second arc-shaped chords 14, 15, first and second anti-arc-shaped chords 16, 17, first and second upper load-carrying cords 18, 19, first and second lower load-carrying cords 20, 21, and first and second hanger wires 22, 23; the first and second arc vertical cables 14, 15, the first and second arc vertical cables 16, 17, the first and second lower load cables 20, 21 are connected with the south bearing frame in the following manner: the south end points of the first arc hanging rope 14 and the first arc hanging rope 16 are respectively connected with the upper end and the lower end of the east large flexible grommet 7.1; the south end points of the second arc hanging rope 15 and the second arc hanging rope 17 are respectively connected with the upper end and the lower end of the western large flexible grommet 7.2; the south end point of the first lower load cable 20 is connected with the east small flexible grommet 10.1 through a prestress torsion spring 11.1; the south end point of the second lower load cable 21 is connected with the west small flexible grommet 10.2 through a prestress torsion spring 11.2; the north end points of the first and second arc-shaped vertical ropes 14, 15, the first and second arc-shaped vertical ropes 16, 17 and the first and second lower load ropes 20, 21 are connected with the north bearing frame in the same way as the south bearing frame; the first and second pendant cables 14 and 16, and the second and second pendant cables 15 and 17 respectively form conjugate structures in the vertical direction, while the first and second pendant cables 14 and 15, and the first and second pendant cables 16 and 17 respectively form conjugate structures in the horizontal direction; therefore, the three-dimensional conjugate structure formed by the first sagged cable 14, the first anti-sagged cable 16, the second sagged cable 15 and the second anti-sagged cable 17 can form an effective constraint effect in the up, down, east and west directions, and prevent the photovoltaic panel 26 or the photo-thermal tube from side turning and jumping up and down caused by the large shaking of the flexible cable frame in severe weather such as strong wind.
The first hanger 22 is a plurality of hanger wires arranged between the first arc hanging wire 14 and the first arc hanging wire 16 along the north-south direction at intervals; the second hanger 23 is a plurality of second arc-shaped vertical ropes 15 and second arc-shaped vertical ropes 17 which are arranged at intervals along the north-south direction; the two ends of the top of each photovoltaic plate 26 or each photo-thermal tube are respectively connected with the middle parts of the first hanger wire 22 and the second hanger wire 23 at the corresponding positions, and the two ends of the bottom of each photovoltaic plate 26 or each photo-thermal tube are respectively connected with the first lower load cable 20 and the second lower load cable 21 at the corresponding positions; the south end points of the first upper load cable 18 and the second upper load cable 19 are respectively connected with the top two ends of the first photovoltaic panel 26 or the photo-thermal tube on the south side, the north end points of the first upper load cable 18 and the second upper load cable 19 are respectively connected with the top two ends of the first photovoltaic panel 26 or the photo-thermal tube on the north side, and the top two ends of each photovoltaic panel 26 or the photo-thermal tube are respectively connected with the first upper load cable 18 and the second upper load cable 19 at corresponding positions; a first rigid cross bar 24 is arranged between the first and second lower load ropes 20, 21 and is positioned near the south bearing frame; a second rigid cross bar 25 is provided between the first and second lower load cables 20, 21 near the north carrier.
The first and second rigid rails 24, 25 serve to constrain the width between the first and second lower load cables 20, 21 to accommodate the width of the photovoltaic panel 26 or the photo-thermal tube. Four three-dimensional conjugate curves formed by the first sagged rope 14, the first anti-sagged rope 16, the second sagged rope 15 and the second anti-sagged rope 17 and the first and second droppers 22 and 23 and the first and second upper load ropes 18 and 19 form a stable space triangle tensioning structure, so that the wind-induced swing and vibration resistance capability of the flexible cable frame is greatly improved.
The elevation angle adjusting mode of the photovoltaic panel 26 or the photo-thermal tube of the invention is as follows:
the winch on the small flexible grommet on the eastern side of the north bearing frame rotates anticlockwise (seen from the south to the north) to drive the small flexible grommet on the eastern side of the north bearing frame to rotate anticlockwise, and the winch on the small flexible grommet on the western side of the north bearing frame rotates clockwise to drive the small flexible grommet on the eastern side of the north bearing frame to rotate clockwise; meanwhile, the third winch 9.1 on the east small flexible grommet 10.1 of the south bearing frame rotates anticlockwise to drive the east small flexible grommet 10.1 of the south bearing frame to rotate anticlockwise, the fourth winch 9.2 on the west small flexible grommet 10.2 of the south bearing frame rotates clockwise to drive the east small flexible grommet 10.1 of the south bearing frame to rotate clockwise, so that the heights of the first and second lower load ropes 20 and 21 are lowered, the bottom end position of the photovoltaic panel 26 or the photo-thermal tube is lowered, the top end position of the photovoltaic panel 26 or the photo-thermal tube is unchanged, and the elevation angle is increased.
In order to enable sunlight to vertically irradiate on the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube, the elevation angle of the photovoltaic panel 26 or the photo-thermal tube in summer is small, and the elevation angle of the photovoltaic panel 26 or the photo-thermal tube in winter is large; during elevation adjustment, the top end position of the photovoltaic panel 26 or the photo-thermal tube is always unchanged, and the elevation angle of the photovoltaic panel 26 or the photo-thermal tube is reduced or increased by raising or lowering the bottom end position of the photovoltaic panel 26 or the photo-thermal tube.
In the north and south bearing frames in summer, the states of the east and west small flexible grommet 10.1, 10.2 are shown in fig. 7-1, 7-2 and 7-3 (from north to south): in the north and south bearing frames, east and west small flexible grommets 10.1 and 10.2 are respectively connected with corresponding first and second lower load ropes 20 and 21 through prestress torsion springs 11.1 and 11.2, the positions of the prestress torsion springs 11.1 and 11.2 are higher, namely the positions of the bottom ends of the photovoltaic panel 26 or the photo-thermal tube are higher (compared with the same period in winter), and the elevation angle of the photovoltaic panel 26 or the photo-thermal tube is smaller.
In the north and south bearing frames in winter, the states of the east and west small flexible grommet 10.1, 10.2 are shown in fig. 8-1, 8-2 and 8-3 (from north to south): in the north and south bearing frames, east and west small flexible grommets 10.1 and 10.2 are respectively connected with corresponding first and second lower load ropes 20 and 21 through prestress torsion springs 11.1 and 11.2, the positions of the prestress torsion springs 11.1 and 11.2 are lower (compared with the same period in summer), and the elevation angle of the photovoltaic panel 26 or the photo-thermal tube is larger.
The heights of the first and second lower load cables 20 and 21 gradually decrease from summer to winter, and the elevation angle of the photovoltaic panel 26 or the photo-thermal tube gradually increases.
After the elevation angle of the photovoltaic panel 26 or the photo-thermal tube is determined, east-west rotation tracking is performed on the basis; the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube is rotated and adjusted from east to west in the following manner:
the east side large flexible grommet 7.1, the west side large flexible grommet 7.2 and the north side large flexible grommet of the south bearing frame and the first winch 6.1 and the second winch 6.2 on the west side large flexible grommet simultaneously rotate anticlockwise to drive the four large flexible grommets on the south bearing frame and the north bearing frame to simultaneously rotate anticlockwise, so that the heights of the first arc hanging rope 14, the first arc hanging rope 16, the first upper load rope 18, the first lower load rope 20 and the first hanger 22 in the flexible grommets are increased, the heights of the second arc hanging rope 15, the second arc hanging rope 17, the second upper load rope 19, the second lower load rope 21 and the second hanger 23 are reduced, and the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube is enabled to rotate from east to west.
In the morning of summer, the states of the east and west large flexible grommets 7.1 and 7.2 in the north and south bearing frames are shown in the figure 7-1, the first arc hanging rope 14, the first anti-arc hanging rope 16, the first upper load rope 18, the first lower load rope 20 and the first hanging wire 22 on the east side of the flexible grommets are lower, and the second arc hanging rope 15, the second anti-arc hanging rope 17, the second upper load rope 19, the second lower load rope 21 and the second hanging wire 23 on the west side are higher; i.e. the east side of the photovoltaic panel 26 or the photo-thermal tube is low and the west side is high; the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube faces to the east, so that the sunlight vertically irradiates on the light receiving surface of the photovoltaic panel 26 or the photo-thermal tube.
In summer, from morning to noon, in the north and south bearing frames, the states of the east and west large flexible grommets 7.1 and 7.2 are shown in fig. 7-2, the positions of the first arc hanging rope 14, the first anti-arc hanging rope 16, the first upper load rope 18, the first lower load rope 20 and the first hanging wire 22 on the east side of the flexible grommets are raised, and the positions of the second arc hanging rope 15, the second anti-arc hanging rope 17, the second upper load rope 19, the second lower load rope 21 and the second hanging wire 23 on the west side are lowered; the state of the big flexible grommets 7.1, 7.2 on the east and west sides of the north and south bearing frames is changed from 7-1 to 7-2, namely the photovoltaic panel 26 or the photo-thermal tube is raised on the east side and lowered on the west side; the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube is gradually changed from east to west, so that the sunlight vertically irradiates the light receiving surface of the photovoltaic panel 26 or the photo-thermal tube.
In summer, from noon to evening, the states of the east and west large flexible grommets 7.1 and 7.2 are continuously raised from the positions of the first arc hanging rope 14, the first anti-arc hanging rope 16, the first upper load rope 18, the first lower load rope 20 and the first hanging wire 22 at the east side of the flexible rope frame, and the positions of the second arc hanging rope 15, the second anti-arc hanging rope 17, the second upper load rope 19, the second lower load rope 21 and the second hanging wire 23 at the west side are continuously lowered; the state of the big flexible grommets 7.1, 7.2 on the east and west sides of the north and south bearing frames is changed from 7-2 to 7-3, i.e. the east side of the photovoltaic panel 26 or the photo-thermal tube continues to rise and the west side continues to lower; the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube is gradually changed from upward to downward, so that the sunlight vertically irradiates on the light receiving surface of the photovoltaic panel 26 or the photo-thermal tube.
The rotation adjustment mode of the front light receiving surface of the photovoltaic panel 26 or the photo-thermal tube in winter from east to west is the same as that in summer.
Example 2:
as shown in fig. 4 and 5, this embodiment differs from embodiment 1 only in that: 1. the photovoltaic panel 26 uses a double-sided photovoltaic panel structure, and a light reflecting device is arranged below the second flexible cable frame.
The light reflecting device comprises a rectangular rigid frame 27, concave light reflecting films 28 arranged on the rectangular rigid frame 27, two ends of four sides of the rectangular rigid frame 27 are respectively connected with arc-shaped tension cables 29, a plurality of support rods 30 extending downwards are respectively arranged on each side of the rectangular rigid frame 27 at intervals, and the lower end of each support rod 30 is respectively connected with the corresponding arc-shaped tension cable 29 to form a chord support structure; the south and north ends of the rectangular rigid frame 27 are connected to corresponding south and north carriers, respectively. When the rectangular rigid frame 27 is longer in the north-south direction, a plurality of groups of concave reflecting films 28 can be combined in an end-to-end mode, gaps are reserved among the reflecting films 28, and the phenomenon that rain and snow are gathered in a large amount is prevented.
The chord support structure belongs to a semi-rigid self-balancing system, so that the rectangular rigid frame 27 cannot deform under the action of gravity; when the reflecting device is actually installed, the height difference exists at the south and north ends, and the reflecting device is formed by combining a plurality of groups of reflecting films with shorter north-south spans, gaps are reserved among the reflecting films of each group, and the phenomenon of large accumulation of rain and snow is prevented. The sunlight reflection effect of the reflective film is utilized to increase the illumination intensity received by the light receiving surface on the back of the photovoltaic panel, and the dual-axis tracking adjustment is utilized together to increase the generated energy.
Example 3:
as shown in FIG. 6, under the application condition of very large north-south span, the invention can adopt a short-span multi-section structure, reduce the stress of the stand column of the bearing frame and the flexible grommet, and increase the structural stability. The short-span multi-section structure is formed by arranging a plurality of concentrating flexible double-shaft tracking photovoltaic and photo-thermal brackets in a linking way along the south and north directions; the elevation angle adjustment mode and the east-west tracking adjustment mode of each concentrating type flexible double-shaft tracking photovoltaic and photo-thermal bracket photovoltaic panel 26 or photo-thermal pipe are the same as those of the embodiment 1, and the adjustment is performed synchronously.
In the description of the present invention, it should be noted that the terms "east", "west", "south", "north", "vertical", "horizontal", "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
Claims (3)
1. A light-gathering type flexible double-shaft tracking photovoltaic and photo-thermal bracket comprises a south bearing frame and a north bearing frame which are arranged in the north-south direction, a flexible cable frame which is arranged between the south bearing frame and the north bearing frame, and a plurality of photovoltaic panels (26) or photo-thermal pipes which are arranged on the flexible cable frame at intervals in the north-south direction; the method is characterized in that: the north and south bearing frames have the same structure and comprise east upright posts (1) and west upright posts (2) which are arranged at intervals in the east-west direction; the east and west upright posts (1, 2) are fixedly connected through an upper cross beam (3) and a lower cross beam (4) to form a rectangular frame, at least one group of flexible double-shaft tracking and adjusting systems are arranged in the rectangular frame, and each flexible double-shaft tracking and adjusting system consists of a photovoltaic panel east and west tracking and adjusting system and a photovoltaic panel depression and elevation angle adjusting system;
the east and west tracking adjustment system comprises: the first fixed pulleys (5.1) and the second fixed pulleys (5.2) are arranged on the upper beam (3) at intervals in the east-west direction, and the first windlass (6.1) and the second windlass (6.2) are arranged on the lower beam (4) at intervals; the rope of the first winch (6.1) bypasses the first fixed pulley (5.1) to form an east side large flexible grommet (7.1), and the rope of the second winch (6.2) bypasses the second fixed pulley (5.2) to form a west side large flexible grommet (7.2); a connecting rope (13) is arranged between the east large flexible grommet (7.1) and the west large flexible grommet (7.2), and two ends of the connecting rope (13) bypass the first fixed pulley (5.1) and the second fixed pulley (5.2) to be respectively connected with the corresponding east large flexible grommet (7.1) and west large flexible grommet (7.2);
the pitch and elevation adjustment system includes: a third pulley (8.1) and a third winch (9.1) which are arranged on the rope of the east large flexible grommet (7.1) at intervals up and down, and a fourth pulley (8.2) and a fourth winch (9.2) which are arranged on the rope of the west large flexible grommet (7.2) at intervals up and down; the rope of the third winch (9.1) bypasses the third pulley (8.1) to form an east small flexible grommet (10.1), and the rope of the fourth winch (9.2) bypasses the fourth pulley (8.2) to form a west small flexible grommet (10.2);
the flexible cable rack includes: first and second arc-shaped cables (14, 15), first and second anti-arc-shaped cables (16, 17), first and second upper load cables (18, 19), first and second lower load cables (20, 21) and first and second hanger wires (22, 23); the first and second arc vertical cables (14, 15), the first and second arc vertical cables (16, 17), the first and second lower load cables (20, 21) and the south bearing frame are connected in the following manner: the south end points of the first arc hanging rope (14) and the first arc anti-hanging rope (16) are respectively connected with the upper end and the lower end of the east large flexible grommet (7.1); the south end points of the second arc hanging rope (15) and the second arc hanging rope (17) are respectively connected with the upper end and the lower end of the western large flexible grommet (7.2); the south end point of the first lower load cable (20) is connected with the east small flexible grommet (10.1) through a prestress torsion spring (11.1); the south end point of the second lower load cable (21) is connected with a west small flexible grommet (10.2) through a prestress torsion spring (11.2); the north end points of the first and second arc vertical cables (14, 15), the first and second arc vertical cables (16, 17) and the first and second lower load cables (20, 21) are connected with the north bearing frame in the same way as the south bearing frame;
the first hanger (22) is a plurality of the first arc hanging ropes (14) and the first anti-arc hanging ropes (16) which are arranged at intervals along the north-south direction; the second hanger (23) is a plurality of second arc hanging ropes (15) and second anti-arc hanging ropes (17) which are arranged at intervals along the north-south direction; the top two ends of each photovoltaic plate (26) or each photo-thermal tube are respectively connected with the middle parts of the first hanger wire and the second hanger wire (22 and 23) at the corresponding positions, and the bottom two ends of each photovoltaic plate (26) or each photo-thermal tube are respectively connected with the first lower load cable and the second lower load cable (20 and 21) at the corresponding positions; the south end points of the first upper load cable (18) and the second upper load cable (19) are respectively connected with the top two ends of the first south photovoltaic panel (26) or the light heat pipe, the north end points of the first upper load cable (18) and the second upper load cable (19) are respectively connected with the top two ends of the first north photovoltaic panel (26) or the light heat pipe, and the top two ends of each photovoltaic panel (26) or the light heat pipe are respectively connected with the first upper load cable (18) and the second upper load cable (19) at corresponding positions; a first rigid cross bar (24) is arranged between the first lower load cable (20) and the second lower load cable (21) and is positioned close to the south bearing frame; a second rigid cross bar (25) is arranged between the first lower load cable (20) and the second lower load cable (21) and close to the north bearing frame;
the first arc hanging rope (14) and the first arc hanging rope (16), and the second arc hanging rope (15) and the second arc hanging rope (17) respectively form a conjugate structure in the vertical direction; the first arc hanging rope (14) and the second arc hanging rope (15), and the first arc hanging rope (16) and the second arc hanging rope (17) respectively form a conjugate structure in the horizontal direction; the three-dimensional conjugate structure comprises a first arc-shaped vertical rope (14), a first arc-shaped vertical rope (16), a second arc-shaped vertical rope (15) and a second arc-shaped vertical rope (17).
2. The concentrating flexible dual-axis tracking photovoltaic, photothermal support of claim 1, wherein: the photovoltaic board (26) is two-sided photovoltaic board, flexible cable frame below is provided with reflector device, reflector device includes: the rectangular rigid frame (27) is provided with concave reflecting films (28) on the rectangular rigid frame (27), two ends of four sides of the rectangular rigid frame (27) are respectively connected with arc-shaped tension cables (29), a plurality of support rods (30) extending downwards are respectively arranged on each side of the rectangular rigid frame (27) at intervals, and the lower ends of the support rods (30) are respectively connected with the corresponding arc-shaped tension cables (29) to form a string support structure.
3. The concentrating flexible dual-axis tracking photovoltaic, photothermal support of claim 2, wherein: the south and north ends of the rectangular rigid frame (27) are connected to corresponding south and north carriers, respectively.
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| CN109067335B (en) * | 2018-08-06 | 2020-04-03 | 北京启迪清云智慧能源有限公司 | Flat single-shaft flexible photovoltaic support |
| CN110427053B (en) * | 2019-09-05 | 2024-05-03 | 南京市光翔新能源科技有限公司 | Prestress flexible support inclined single-axis tracking system with double-layer structure |
| CN117277927A (en) * | 2022-03-30 | 2023-12-22 | 亿恒智慧(北京)能源技术有限公司 | Photovoltaic power generation support system and installation method thereof |
| ES2968302A1 (en) * | 2022-10-07 | 2024-05-08 | Ingecid Investig Y Desarrollo De Proyectos S L | SOLAR PANELS FIXING SYSTEM |
| CN116248025B (en) * | 2023-03-14 | 2023-09-22 | 安徽金鹏建设集团股份有限公司 | Adjustable flexible intelligent photovoltaic bracket system |
| CN117375509A (en) * | 2023-09-28 | 2024-01-09 | 中国矿业大学(北京) | Tracking type photovoltaic bracket system |
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