A offshore floating photovoltaic system and its construction method

Abstract

The present invention provides an offshore floating photovoltaic system and a construction method thereof, comprising: a floating tube support system, the floating tube support system comprising a floating tube support and a pontoon, a group of fixed pulleys and a group of mooring piers are respectively fixed at both ends of the floating tube support; an anchor mooring system, the anchor mooring system comprising an anchor pile, a rope, and a ballast block, a ballast block is fixed at one end of the rope, and the other end of the rope is fixed on the anchor pile by passing around the fixed pulley. A floating mooring system, the floating mooring system comprising a mooring pile and a floating mooring pier, a floating mooring pier is nested inside the mooring pile, and the floating mooring pier is connected to the mooring pier by a rope; a photovoltaic system, the photovoltaic system comprising a plurality of groups of foldable photovoltaic panels, and the foldable photovoltaic panels can automatically adjust the tilt angle to face the sunlight. The present invention solves the problems of the singleness of offshore wind power generation and the insufficient development and utilization of resources, and improves the overall benefits of offshore power generation.

Description

Technical Field

[0001] The present invention relates to the field of offshore photovoltaic systems, and in particular to an offshore wind power floating photovoltaic system and a construction method thereof. Background Art

[0002] With the large-scale development of offshore wind power, the sea area is requisitioned for offshore wind turbine foundations. There is a large amount of sea area around the wind turbine foundations, and there is still a lot of room for resource development. How to comprehensively utilize this part of the sea area and further promote the intensive and economical use of sea resources has become a new topic. It is necessary to efficiently combine photovoltaic systems and wind power generation systems, utilize the limited sea resources that have been developed, fully plan the sea area space, and further promote the improvement of offshore power generation capacity.

[0003] Based on the above situation, it is necessary to design a floating photovoltaic foundation for offshore wind power. On the sunny side of the offshore wind foundation, floating photovoltaics are installed and the offshore wind turbine power transmission system is utilized to save investment and improve overall benefits. Summary of the invention

[0004] In order to solve the above-mentioned singleness of offshore wind power generation in the prior art and the problem of insufficient resource development and utilization, so as to improve the overall efficiency of offshore power generation, the present invention provides an offshore floating photovoltaic system and a construction method thereof.

[0005] The technical solution provided by the present invention is as follows: an offshore floating photovoltaic system, comprising:

[0006] A floating tube support system, the floating tube support system comprises a floating tube support and a plurality of pontoons, the pontoons are arrayed in the floating tube support, and a set of fixed pulleys and a set of mooring piers are respectively fixed at both ends of the floating tube support;

[0007] An anchoring and mooring system, the anchoring and mooring system comprises an anchoring pile, a rope, and a ballast block, one end of the rope is fixed with a ballast block, and the other end of the rope passes around the fixed pulley and is fixed on the anchoring pile.

[0008] A floating mooring system, the floating mooring system comprising a mooring pile and a floating mooring pier, the mooring pile having a through-length slot from top to bottom on one side facing the floating tube support, the floating mooring pier being nested inside the mooring pile, and the floating mooring pier being connected to the mooring pier via a rope;

[0009] A photovoltaic system is fixed on the buoyancy box, and the photovoltaic system includes a plurality of groups of foldable photovoltaic panels, and the foldable photovoltaic panels can automatically adjust the tilt angle to face the sunlight.

[0010] Furthermore, the floating pipe support includes a rectangular floating frame and a steel pipe grid. The rectangular floating frame is formed by sealing and welding 4 steel pipes. A steel pipe grid is sealed and welded on the inner side of the rectangular floating frame. The steel pipe grid is flush with the lower bottom surface of the rectangular floating frame. The pontoons are evenly arranged and fixed on the corresponding steel pipe grids. The exposed parts of the floating pipe support are coated with anti-corrosion paint. Anti-corrosion anode blocks are installed on the rectangular floating frame. The fixed pulley and the mooring pier are respectively fixed on the upper ends of the rectangular floating frame.

[0011] Furthermore, the diameter of the steel pipe of the rectangular floating frame is more than twice the diameter of the steel pipe of the steel pipe grid.

[0012] Furthermore, recessed grooves are symmetrically arranged on both sides adjacent to the groove inside the mooring pile along the up and down directions, and the floating mooring pier includes a buoy and a mooring column, the mooring column is fixed at the middle of the upper end of the buoy, a support plate is fixed to the upper end of the mooring column, a pair of driving wheels are installed on both sides of the buoy, and a pair of auxiliary wheels are installed on both sides of the support plate, and the driving wheels and the auxiliary wheels move up and down in the recessed grooves.

[0013] Furthermore, the auxiliary wheel is sleeved on the roller support, the two side ends of the support plate are connected with damping rods, the damping rods are connected to the roller support, and the outside of the telescopic rod is sleeved with a balancing spring.

[0014] Furthermore, the photovoltaic system also includes a photovoltaic bracket and a control device, the photovoltaic bracket is fixed to the buoyancy box by four electric telescopic rods, the foldable photovoltaic panel is composed of a first photovoltaic panel and a second photovoltaic panel fixed by a hinge, the first photovoltaic panel is fixed on the photovoltaic bracket, and the hinge shaft of the hinge to which the second photovoltaic panel is fixed is provided with a first gear at both ends, the photovoltaic bracket is correspondingly installed with a driving motor at both ends of the hinge shaft, the motor shaft of the driving motor is provided with a second gear, the first gear is meshed with the second gear, the control device is fixed on the photovoltaic bracket, the control device includes a wind speed sensor, a light sensor and a control unit, the control unit automatically controls the driving motor to drive the second photovoltaic panel to flip and open and close based on the detection information of the wind speed sensor, and the control unit automatically controls the electric telescopic rod to adjust the inclination angle of the photovoltaic bracket based on the detection information of the light sensor.

[0015] Furthermore, the backs of the first photovoltaic panel and the second photovoltaic panel are both fixedly connected with stainless steel cover plates, and reinforcing ribs are welded on the backs of the stainless steel cover plates.

[0016] Furthermore, the offshore floating photovoltaic system also includes a suspension bridge system for personnel passage, and the suspension bridge system includes: a triangular cantilever beam, a pedestrian suspension bridge, a traction winch, a guide wheel and a traction rope, the triangular cantilever beam is arranged at the lower end of the outer platform of the offshore wind turbine foundation, a hinge device is provided at the front end of the triangular cantilever beam, the rear end of the pedestrian suspension bridge is connected to the hinge device, the traction winch is installed at the root of the triangular cantilever beam, and the guide wheel is fixed to the outside of the wind turbine tower above the outer platform of the offshore wind turbine foundation, the traction rope of the traction winch passes around the guide wheel and is fixed to the front end of the pedestrian suspension bridge, and the front end of the pedestrian suspension bridge contacts the upper end of the floating tube support system after traction and rotation.

[0017] Furthermore, the offshore floating photovoltaic system also includes a transmission cable system, which includes an arc-shaped cable detent frame, a retractable cable guide cage, and a fixed cable guide cage. The arc-shaped cable detent frame is fixed on the mooring pile, and a retractable cable guide cage is hung on the lower end of the arc-shaped cable detent frame. The lower end of the retractable cable guide cage is connected to a circular cable winding well, and a fixed cable guide cage is installed on the upper end of the arc-shaped cable detent frame. The other end of the fixed cable guide cage is fixed on the external platform of the offshore wind turbine foundation. The electricity generated by the photovoltaic system is transmitted to the wind turbine tower through the cable on the circular cable winding well via the transmission cable system and collected into the power grid.

[0018] The present invention also provides a construction method for an offshore floating photovoltaic system, the construction method comprising:

[0019] 1. Determine the appropriate offshore wind turbine location, sweep the sea and clean the seabed of the selected sea area on the south side of the selected wind turbine foundation;

[0020] 2. Roll up on the land of the wharf: 2 mooring piles with full-length slots and notched slideways, 2 anchor piles for mooring, 4 round steel pipes, a pedestrian suspension bridge made of steel structure, and 2 ballast blocks. The pedestrian suspension bridge includes a triangular cantilever beam and a hinge device for lower support;

[0021] 3. Splice 4 round steel pipes into a rectangular floating pipe bracket according to the designed size, sandblast and remove rust, install 2 fixed pulleys on the outside, install 2 mooring piers and 1 circular cable well on the inside, apply anti-corrosion paint, and install anti-corrosion anode blocks;

[0022] 4. The floating tube support is hoisted or dragged into the water and temporarily fixed at the dock. A pontoon, a photovoltaic support, and a foldable photovoltaic panel are installed inside the floating tube support. The pontoon is arranged in a display, and the periphery is fixed to the fastening device inside the floating tube support;

[0023] 5. Load the mooring piles, anchor piles, pedestrian suspension bridge and ballast blocks onto the ship and tow them to the machine position. Use a pile driver to sink the mooring piles and anchor piles so that the top of the anchor piles is below the sea level and the top of the mooring piles is above the sea level. Insert the cylindrical buoy with rollers on both sides from the top of the mooring pile into the notched slide groove and slide down the buoy until it floats.

[0024] 6. Wet or dry towing, transport the floating tube support with the photovoltaic system to the machine position, align the two mooring piers of the floating tube support with the two mooring piles respectively, use multiple ropes to cover the mooring piers of the floating tube support and the mooring column on the top of the buoy, set the spring on the outside of the buoy to compress it, and then tie the ropes firmly;

[0025] 7. The diver dives into the sea and ties one end of the mooring rope to the anchor pile, passes it through the outside of the floating tube bracket and extends it to the fixed pulley, ties the other end of the rope to the ballast block, and throws the ballast block into the water, and adjusts and tightens the rope;

[0026] 8. Install an arc-shaped cable detent frame on the mooring pile, install a fixed cable guide cage on the upper end of the arc-shaped cable detent frame, fix the other end of the fixed cable guide cage on the outer platform of the offshore wind turbine foundation, and hang a retractable cable guide cage on the lower end of the arc-shaped cable detent frame;

[0027] 9. Install a guide wheel on the outside of the wind turbine tower above the outer platform of the offshore wind turbine foundation, install a triangular cantilever beam at the lower end of the outer platform of the offshore wind turbine foundation, install a hinge device at the front of the triangular cantilever beam, install a traction winch at the root of the triangular cantilever beam, install the upper part of the pedestrian suspension bridge on the hinge, tie a traction rope to the lower end, pass the guide wheel around the traction winch, adjust and control the traction winch, and complete the retraction and extension of the pedestrian suspension bridge;

[0028] 10. Install the inverter at the bottom of the wind turbine tower, connect the photovoltaic panel output cable to the combiner box, lay the combiner box output cable, enter the wind turbine tower through the circular cable well along the retractable cable cage, arc-shaped cable back-twist frame, and fixed cable cage, connect to the inverter inside the wind turbine tower, and connect the inverter to the frequency converter at the bottom of the wind turbine tower;

[0029] 11. Open and secure the foldable photovoltaic panel, debug it, and connect it to the grid.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] Combined with offshore wind power, floating photovoltaics are installed and sent out through wind turbine transmission equipment, realizing the efficient combination of wind power generation and photovoltaic power generation, greatly utilizing offshore wind and solar energy resources, improving power generation efficiency, and achieving considerable economic benefits;

[0032] Comprehensively utilize the offshore wind power site levy and the surrounding sea areas to improve the efficiency of sea use and realize the intensive and economical use of sea resources; at the same time, there are a large number of offshore wind turbine foundations developed in China, and even if they are partially installed, there will be good social benefits;

[0033] The rope mooring can adjust the fastening status at any time. In the event of a hurricane or severe weather at sea, the entire floating photovoltaic system can be towed to the dock or a sheltered platform in advance by a tugboat to protect the photovoltaic equipment. The multi-directional adjustable folding photovoltaic panels can achieve adaptive adjustment to maximize the reception of solar energy.

[0034] The construction method of the present invention can realize the segmented installation of the whole set of equipment of the floating photovoltaic system. At the same time, based on the installation steps in different stages, the photovoltaic system can be put into use for power generation with the highest efficiency. At the same time, the construction method also takes into account the convenience of disassembly, maintenance and replacement when the subsequent photovoltaic system equipment fails, and the floating tube bracket can be used as a carrier to be towed and moved away as a whole to protect the photovoltaic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 The present invention Figure 1 Middle A-direction view;

[0037] Figure 3 The present invention Figure 2 Middle BB section view;

[0038] Figure 4 is a schematic structural diagram of a photovoltaic system of the present invention;

[0039] Figure 5 is a schematic structural diagram of a suspension bridge system of the present invention;

[0040] Figure 6 is a schematic structural diagram of a transmission cable system of the present invention;

[0041] The reference numerals are as follows:

[0042] 1. Floating tube support; 2. Floating box; 3. Fixed pulley; 4. Mooring pier; 5. Anchor pile; 6. Rope; 7. Ballast block; 8. Mooring pile; 9. Floating mooring pier; 10. First photovoltaic panel; 11. Second photovoltaic panel; 12. Photovoltaic support; 13. Hinge; 14. Electric telescopic rod; 15. Notch; 16. Notch slide; 17. Float; 18. Mooring column; 19. Support plate; 20. Driving wheel; 21. Auxiliary wheel; 22. Roller support; 23. Damping rod; 24, balance spring; 25, first gear; 26, second gear; 27, drive motor; 28, triangular cantilever beam; 29, pedestrian suspension bridge; 30, traction winch; 31, guide wheel; 32, traction rope; 33, offshore wind turbine foundation outer platform; 34, hinge device; 35, wind turbine tower; 36, arc-shaped cable torsion frame; 37, retractable cable cage; 38, fixed cable cage; 39, circular cable well; 40, small casing; 41, large casing. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] like Figure 1-6 As shown, an offshore floating photovoltaic system comprises:

[0045] A floating tube support system, the floating tube support system comprises a floating tube support 1 and a plurality of pontoons 2, the pontoons 2 are arranged in an array in the floating tube support 1, and a set of fixed pulleys 3 and a set of mooring piers 4 are respectively fixed at both ends of the floating tube support 1;

[0046] An anchoring and mooring system, the anchoring and mooring system comprises an anchor pile 5, a rope 6, and a ballast block 7. The ballast block 7 is fixed to one end of the rope 6, and the other end of the rope 6 is passed around the fixed pulley 3 and fixed to the anchor pile 5.

[0047] A floating mooring system, the floating mooring system comprising a mooring pile 8 and a floating mooring pier 9, the mooring pile 8 is provided with a through-length slot 15 from top to bottom on one side facing the floating tube support 1, the floating mooring pier 9 is nested inside the mooring pile 8, and the floating mooring pier 9 is connected to the mooring pier 4 through a rope 6;

[0048] A photovoltaic system is fixed on the buoyancy box 2. The photovoltaic system includes a plurality of groups of foldable photovoltaic panels. The foldable photovoltaic panels can automatically adjust their tilt angles to face the sunlight.

[0049] The ballast block 7 in this embodiment and the following embodiments may be a reinforced concrete block, the buoyancy box 2 may be a HDPE high-density polyethylene standard buoyancy box, and the rope 6 may be a corrosion-resistant high-strength fiber rope.

[0050] The photovoltaic system is always floating above the sea level through the floating tube bracket 1, and the floating tube bracket 1 is suspended and fixed at the sea level through the floating mooring system to prevent it from drifting away from the fixed sea area. The other end of the floating tube bracket 1 can be further raised and lowered and tightened and fixed on the sea level through the anchoring mooring system to prevent the photovoltaic system on the floating tube bracket 1 from being overturned by waves.

[0051] In some embodiments, the floating tube support 1 includes a rectangular floating frame and a steel pipe grid. The rectangular floating frame is composed of 4 steel pipes sealed and welded together. A steel pipe grid is sealed and welded on the inner side of the rectangular floating frame. The steel pipe grid is flush with the lower bottom surface of the rectangular floating frame. The pontoons 2 are evenly arranged and fixed on the corresponding steel pipe grids. The exposed parts of the floating tube support 1 are coated with anti-corrosion paint. Anti-corrosion anode blocks are installed on the rectangular floating frame. The fixed pulley 3 and the mooring pier 4 are respectively fixed on the upper ends of the rectangular floating frame.

[0052] By adopting a steel pipe grid structure, the strength of the floating tube support 1 is ensured while achieving a hollow structure with the largest space of the floating tube support system, which greatly improves the buoyancy of the floating tube support 1. By applying anti-corrosion paint and installing anti-corrosion anode blocks, the anti-corrosion ability of the floating tube support 1 is improved, and its service life is further improved.

[0053] Preferably, the diameter of the steel pipe of the rectangular floating frame is more than twice the diameter of the steel pipe of the steel pipe grid.

[0054] By setting different steel pipe diameters, the photovoltaic system is ensured to be located on the steel pipe grid and within the rectangular floating frame, which further protects the photovoltaic system itself and prevents damage caused by impact and the like.

[0055] In some embodiments, recessed grooves 16 are symmetrically arranged on both sides adjacent to the slot 15 inside the mooring pile 8 along the up and down directions. The floating mooring pier 9 includes a buoy 17 and a mooring column 18. The mooring column 18 is fixed at the middle of the upper end of the buoy 17. A support plate 19 is fixed at the upper end of the mooring column 18. A pair of driving wheels 20 are installed on both sides of the buoy 17. A pair of auxiliary wheels 21 are installed on both sides of the support plate 19. The driving wheels 20 and the auxiliary wheels 21 move up and down in the recessed groove 16.

[0056] By setting the full-length slot 15 and the recessed slide groove 16 of the mooring pile 8, the buoy 17 can be stably raised and lowered in the mooring pile 8. By the driving wheel 20 and the auxiliary wheel 21 sliding in the recessed slide groove 16, the floating height of the buoy 17 can be quickly adjusted as the sea level water level rises and falls. The opening width of the slot 15 should be larger than the width of the mooring column 18 to ensure that the rope 6 does not contact the mooring pile 8 and wear during the floating process.

[0057] Preferably, the auxiliary wheel 21 is sleeved on the roller support 22, the two side ends of the support plate 19 are connected with damping rods 23, the damping rods 23 are connected to the roller support 22, and a balance spring 24 is sleeved on the outside of the telescopic rod.

[0058] Through the cooperation of the damping rod 23 and the balancing spring 24, the impact of seawater on the inside of the mooring pile 8 during the up and down sliding process of the buoy 17 can be reduced, thereby improving the stability of the floating movement of the buoy 17; in addition, when the mooring column 18 on the buoy 17 is fastened to the mooring pier 4 by the rope 6, the balancing spring 24 can increase a buffering support force to ensure the tightening balance.

[0059] In some embodiments, the photovoltaic system also includes a photovoltaic bracket 12 and a control device, the photovoltaic bracket 12 is fixed to the buoyancy box 2 by four electric telescopic rods, the foldable photovoltaic panel is composed of a first photovoltaic panel 10 and a second photovoltaic panel 11 fixed by a hinge 13, the first photovoltaic panel 10 is fixed on the photovoltaic bracket 12, and the hinge 13 to which the second photovoltaic panel 11 is fixedly connected is provided with a first gear 25 at both ends of the hinge axis, the photovoltaic bracket 12 is correspondingly installed with a drive motor 27 at both ends of the hinge axis, and a second gear 26 is provided on the motor shaft of the drive motor 27, and the first gear 25 is meshed with the second gear 26, and the control device is fixed on the photovoltaic bracket 12, the control device includes a wind speed sensor, a light sensor and a control unit, the control unit automatically controls the drive motor 27 to drive the second photovoltaic panel 11 to flip and open and close based on the detection information of the wind speed sensor, and the control unit automatically controls the electric telescopic rod to adjust the inclination angle of the photovoltaic bracket 12 based on the detection information of the light sensor.

[0060] The photovoltaic bracket 12 can be adjusted in multiple directions by an electric telescopic rod to adapt to the direction of sunlight. When the wind speed sensor detects strong wind, that is, before a typhoon is predicted, the power collected by the photovoltaic system can be automatically controlled to be output to the drive motor 27 to control the second photovoltaic panel 11 to flip and close, so as to avoid damage to the photovoltaic panel caused by strong impact of wind and waves in typhoon conditions.

[0061] Preferably, the backs of the first photovoltaic panel 10 and the second photovoltaic panel 11 are both fixedly connected with stainless steel cover plates, and reinforcing ribs are welded on the backs of the stainless steel cover plates.

[0062] The stainless steel cover adopts a folded edge design all around, which allows the photovoltaic panel to be folded and effectively closed and accommodated inside the cover, providing overall protection for the photovoltaic panel. At the same time, the setting of the reinforcing ribs can enhance the ability of the stainless steel cover to resist wind and waves.

[0063] In some embodiments, the offshore floating photovoltaic system also includes a suspension bridge system for personnel passage, and the suspension bridge system includes: a triangular cantilever beam 28, a pedestrian suspension bridge 29, a traction winch 30, a guide wheel 31 and a traction rope 32. The triangular cantilever beam 28 is arranged at the lower end of the outer platform 33 of the offshore wind turbine foundation. A hinge device 34 is provided at the front edge of the triangular cantilever beam 28. The rear end of the pedestrian suspension bridge 29 is connected to the hinge device 34. The traction winch 30 is installed at the root of the triangular cantilever beam 28. The guide wheel 31 is fixed to the outside of the wind turbine tower 35 above the outer platform 33 of the offshore wind turbine foundation. The traction rope 32 of the traction winch 30 bypasses the guide wheel 31 and is fixed to the front end of the pedestrian suspension bridge 29. The front end of the pedestrian suspension bridge 29 contacts the upper end of the floating tube support system after traction and rotation.

[0064] By providing a pedestrian suspension bridge 29 that can be rotated and retracted under the pulling of a traction rope 32, the height of the floating tube support 1 can be adapted to different water levels, thereby facilitating system installers to pass to the floating tube support 1 for on-site construction, and also facilitating timely maintenance of subsequent photovoltaic system failures.

[0065] Furthermore, the offshore floating photovoltaic system also includes a transmission cable system, which includes an arc-shaped cable detent frame 36, a retractable cable guide cage 37, and a fixed cable guide cage 38. The arc-shaped cable detent frame 36 is fixed on the mooring pile 8, and the lower end of the arc-shaped cable detent frame 36 is hung with a retractable cable guide cage 37, and the lower end of the retractable cable guide cage 37 is connected to a circular cable winding well 39. The upper end of the arc-shaped cable detent frame 36 is installed with a fixed cable guide cage 38, and the other end of the fixed cable guide cage 38 is fixed on the outer platform 33 of the offshore wind turbine foundation. The electricity generated by the photovoltaic system is transmitted to the wind turbine tower 35 through the cables on the circular cable winding well 39 via the transmission cable system and collected and sent into the power grid.

[0066] The upper part of the telescopic cable guide cage 37 is a corrugated tube, and the lower part is a large sleeve 41. The upper part of the circular cable winding well 39 is a small sleeve 40. The large sleeve 41 is 10 cm larger in diameter than the small sleeve 40. The small sleeve 40 is inserted into the large sleeve 41, and the large sleeve 41 is placed on the circular cable winding well 39.

[0067] The electricity from the photovoltaic panels passes through the junction box, and the output cable is connected to the lower end of the cable arranged in the circular cable well 39 arranged at the lower end of the cable guide cage; it enters through the above-mentioned cable channel, the bottom of the wind turbine tower 35, is connected to the inverter, and then connected to the frequency converter at the bottom of the wind turbine tower, and together with the output power of the wind turbine set, it is sent to the power grid through the box transformer, 35kV submarine cable, and booster station.

[0068] Through the fixed and retractable design of the cable guide cage of the cable transportation system, the height of the floating tube support 1 can be adaptively adjusted to different water levels during cable transportation. The arc-shaped cable detent frame 36 is preferably a 1 / 4 arc structure, which facilitates cable transportation and ensures that the cable is above the water level.

[0069] The present invention also provides a construction method for an offshore floating photovoltaic system, the construction method comprising:

[0070] 1. Determine the appropriate offshore wind turbine location, sweep the sea and clean the seabed of the selected sea area on the south side of the selected wind turbine foundation;

[0071] 2. Rolling up on the land area of ​​the dock: 2 mooring piles 8 with full-length slots 15 and concave slides 16, 2 anchor piles 5 for mooring, 4 round steel pipes, a pedestrian suspension bridge 29 made of steel structure, and 2 ballast blocks 7. The pedestrian suspension bridge 29 includes a triangular cantilever beam 28 for lower support and a hinge device 34;

[0072] 3. Splice four round steel pipes into a rectangular floating pipe bracket 1 according to the designed size, sandblast to remove rust, install two fixed pulleys 3 on the outside, install two mooring piers 4 and a circular cable winding well 39 on the inside, apply anti-corrosion paint, and install anti-corrosion anode blocks;

[0073] 4. The floating tube support 1 is hoisted or dragged into the water and temporarily fixed at the dock. A pontoon 2, a photovoltaic support 12, and a foldable photovoltaic panel are installed inside the floating tube support 1. The pontoon 2 is arranged in a display, and the periphery is fixed to the inner fastening device of the floating tube support 1;

[0074] 5. Load the mooring pile 8, anchor pile 5, pedestrian suspension bridge 29 and ballast block 7 onto the ship and tow them to the machine position. Use a pile driver to sink the mooring pile 8 and anchor pile 5 so that the top of the anchor pile is below the sea level and the top of the mooring pile is above the sea level. Insert the cylindrical buoy 17 with rollers on both sides from the top of the mooring pile 8 into the concave slide 16 and slide the buoy 17 down until it floats.

[0075] 6. Wet or dry towing, transport the floating tube support 1 with the photovoltaic system to the machine position, align the two mooring piers 4 of the floating tube support 1 with the two mooring piles 8 respectively, use multiple ropes 6 to cover the mooring piers 4 of the floating tube support 1 and the mooring column 18 on the top of the buoy 17, and set the spring 24 on the outside of the buoy 17 to compress it, and then tie the ropes 6 firmly;

[0076] 7. The diver dives into the sea and ties one end of the mooring rope 6 to the anchor pile 5, passes through the outer side of the floating tube support 1 and extends to the fixed pulley 3, ties the other end of the rope 6 to the ballast block 7, and puts the ballast block 7 into the water, and adjusts and tightens the rope 6;

[0077] 8. Install an arc-shaped cable detent frame 36 on the mooring pile 8, install a fixed cable cage 38 on the upper end of the arc-shaped cable detent frame 36, fix the other end of the fixed cable cage 38 on the outer platform 33 of the offshore wind turbine foundation, and hang a retractable cable cage 37 on the lower end of the arc-shaped cable detent frame 36;

[0078] 9. Install a guide wheel 31 on the outside of the wind turbine tower 35 above the offshore wind turbine foundation outer platform 33, install a triangular cantilever beam 28 at the lower end of the offshore wind turbine foundation outer platform 33, install a hinge device 34 at the front edge of the triangular cantilever beam 28, install a traction winch 30 at the root of the triangular cantilever beam 28, install the upper part of the pedestrian suspension bridge 29 on the hinge 13, tie a traction rope 32 to the lower end, and pass the guide wheel 31 to tie the traction winch 30, adjust and control the traction winch 30, and complete the retraction and extension of the pedestrian suspension bridge 29;

[0079] 10. Install the inverter at the bottom of the wind turbine tower 35, connect the photovoltaic panel output power cable to the junction box, lay the junction box output cable, and enter the wind turbine tower 35 from the circular cable well 39 along the retractable cable cage 37, the arc-shaped cable back-twist frame 36, and the fixed cable cage 38, and connect the inverter inside the wind turbine tower 35, and connect the inverter to the frequency converter at the bottom of the wind turbine tower 35;

[0080] 11. Open and secure the foldable photovoltaic panel, debug it, and connect it to the grid.

[0081] In summary, the present invention combines offshore wind power with floating photovoltaic installation, and transmits power to the outside through wind turbine transmission equipment to achieve economic benefits; it comprehensively utilizes offshore wind power sites and the sea areas around the machine sites to improve the efficiency of sea use and achieve intensive and economical use of sea resources; at the same time, a large number of offshore wind turbine foundations have been developed domestically, and even if they are partially installed, they will have good social benefits.

[0082] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments.

[0083] It should also be noted that the present invention may provide demonstrations of parameters containing specific values, but these parameters do not need to be exactly equal to the corresponding values, but can be approximated to the corresponding values ​​within an acceptable error tolerance or design constraint. Directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present application.

[0084] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An offshore floating photovoltaic system, characterized in that: include: A floating tube support system, the floating tube support system comprises a floating tube support and a plurality of pontoons, the pontoons are HDPE high-density polyethylene standard pontoons, the pontoons are arrayed in the floating tube support, and a set of fixed pulleys and a set of mooring piers are respectively fixed at both ends of the floating tube support; An anchoring and mooring system, the anchoring and mooring system comprising an anchor pile, a rope, and a ballast block, wherein a ballast block is fixed to one end of the rope, and the other end of the rope passes over the fixed pulley and is fixed to the anchor pile; A floating mooring system, the floating mooring system comprising a mooring pile and a floating mooring pier, the mooring pile having a through-length slot from top to bottom on one side facing the floating tube support, the floating mooring pier being nested inside the mooring pile, and the floating mooring pier being connected to the mooring pier via a rope; A photovoltaic system, the photovoltaic system is fixed on the buoyancy box, the photovoltaic system includes a plurality of groups of foldable photovoltaic panels, and the foldable photovoltaic panels can automatically adjust the tilt angle to face the sunlight; The floating pipe support includes a rectangular floating frame and a steel pipe grid. The rectangular floating frame is formed by sealing and welding 4 steel pipes. A steel pipe grid is sealed and welded inside the rectangular floating frame. The steel pipe grid is flush with the bottom surface of the rectangular floating frame. The pontoons are evenly arranged and fixed on the corresponding steel pipe grids. The exposed parts of the floating pipe support are all painted with anti-corrosion paint. Anti-corrosion anode blocks are installed on the rectangular floating frame. The fixed pulley and the mooring pier are respectively fixed on both ends of the upper part of the rectangular floating frame. The steel pipe diameter of the rectangular floating frame is more than twice the steel pipe diameter of the steel pipe grid; The inside of the mooring pile is symmetrically provided with concave grooves along the up-down direction on both sides adjacent to the notch, the floating mooring pier comprises a buoy and a mooring column, the mooring column is fixed at the middle of the upper end of the buoy, a support plate is fixed at the upper end of the mooring column, a pair of driving wheels are installed on both sides of the buoy, a pair of auxiliary wheels are installed on both sides of the support plate, and the driving wheels and the auxiliary wheels move up and down in the concave grooves; The auxiliary wheel sleeve is arranged on the roller support, the two side ends of the support plate are connected with damping rods, the damping rods are connected to the roller support, and the outer part of the damping rods is sleeved with a balance spring.

2. The offshore floating photovoltaic system according to claim 1, characterized in that: The photovoltaic system also includes a photovoltaic bracket and a control device. The photovoltaic bracket is fixed to the buoyancy box by four electric telescopic rods. The foldable photovoltaic panel consists of a first photovoltaic panel and a second photovoltaic panel fixed by a hinge. The first photovoltaic panel is fixed to the photovoltaic bracket. The hinge shaft of the hinge to which the second photovoltaic panel is fixed is provided with first gears at both ends. The photovoltaic bracket is provided with a driving motor at both ends of the hinge shaft. The motor shaft of the driving motor is provided with a second gear, and the first gear is meshed with the second gear. The control device is fixed to the photovoltaic bracket. The control device includes a wind speed sensor, a light sensor and a control unit. The control unit automatically controls the driving motor to drive the second photovoltaic panel to flip and open and close based on the detection information of the wind speed sensor. The control unit automatically controls the electric telescopic rod to adjust the inclination angle of the photovoltaic bracket based on the detection information of the light sensor.

3. The offshore floating photovoltaic system according to claim 2, characterized in that: The backs of the first photovoltaic panel and the second photovoltaic panel are both fixedly connected with stainless steel cover plates, and reinforcing ribs are welded on the backs of the stainless steel cover plates.

4. The offshore floating photovoltaic system according to claim 3, characterized in that: The offshore floating photovoltaic system also includes a suspension bridge system for personnel passage, and the suspension bridge system includes: a triangular cantilever beam, a pedestrian suspension bridge, a traction winch, a guide wheel and a traction rope. The triangular cantilever beam is arranged at the lower end of the outer platform of the offshore wind turbine foundation, and a hinge device is provided at the front edge of the triangular cantilever beam. The rear end of the pedestrian suspension bridge is connected to the hinge device, and the traction winch is installed at the root of the triangular cantilever beam. The guide wheel is fixed to the outside of the wind turbine tower above the outer platform of the offshore wind turbine foundation. The traction rope of the traction winch passes around the guide wheel and is fixed to the front end of the pedestrian suspension bridge. The front end of the pedestrian suspension bridge contacts the upper end of the floating tube support system after traction and rotation.

5. The offshore floating photovoltaic system according to claim 4, characterized in that: The offshore floating photovoltaic system also includes a transmission cable system, which includes an arc-shaped cable detent frame, a retractable cable guide cage, and a fixed cable guide cage. The arc-shaped cable detent frame is fixed on the mooring pile, and a retractable cable guide cage is hung on the lower end of the arc-shaped cable detent frame. The lower end of the retractable cable guide cage is connected to a circular cable winding well, and a fixed cable guide cage is installed on the upper end of the arc-shaped cable detent frame. The other end of the fixed cable guide cage is fixed on the outer platform of the offshore wind turbine foundation. The electricity generated by the photovoltaic system is transmitted to the wind turbine tower through the cable on the circular cable winding well via the transmission cable system and collected into the power grid.

6. A construction method for an offshore floating photovoltaic system according to any one of claims 1 to 5, characterized in that: include: (1) Determine the appropriate offshore wind turbine location, sweep the sea and clean the seabed of the selected sea area on the south side of the selected wind turbine foundation; (2) Rolling up on the land area of ​​the dock: 2 mooring piles with full-length slots and notched slideways, 2 anchor piles for mooring, 4 round steel pipes, a pedestrian suspension bridge made of steel structure, and 2 ballast blocks, wherein the pedestrian suspension bridge includes a triangular cantilever beam and a hinge device for lower support; (3) Four round steel pipes are spliced ​​into a rectangular floating pipe bracket according to the designed dimensions, sandblasted to remove rust, two fixed pulleys are installed on the outside, two mooring piers and a circular cable well are installed on the inside, anti-corrosion paint is applied, and anti-corrosion anode blocks are installed; (4) hoisting or dragging the floating tube support into the water, temporarily fixing it at the dock, installing a pontoon, a photovoltaic support, and a foldable photovoltaic panel on the inner side of the floating tube support, the pontoon is arranged in a display, and the outer periphery is fixed to the inner side fastening device of the floating tube support; (5) loading the mooring piles, anchor piles, pedestrian suspension bridge and ballast blocks onto a ship and towing them to the machine position, sinking the mooring piles and anchor piles with a pile driver so that the top of the anchor pile is below the sea level and the top of the mooring pile is above the sea level, inserting a cylindrical buoy with rollers on both sides from the top of the mooring pile into the concave slide groove, and sliding the buoy down until it floats; (6) Wet or dry towing: transport the floating tube support with the photovoltaic system to the aircraft station, align the two mooring piers of the floating tube support with the two mooring piles respectively, use multiple ropes to cover the mooring piers of the floating tube support and the mooring column on the top of the buoy, set the spring on the outside of the buoy to tighten, and then tie the ropes firmly; (7) The diver dives into the sea and ties one end of the mooring rope to the anchor pile, passes it through the fixed pulley outside the floating tube bracket, ties the other end of the rope to the ballast block, and drops the ballast block into the water, adjusting and tightening the rope; (8) Install an arc-shaped cable detent frame on the mooring pile, install a fixed cable guide cage on the upper end of the arc-shaped cable detent frame, fix the other end of the fixed cable guide cage on the outer platform of the offshore wind turbine foundation, and hang a retractable cable guide cage on the lower end of the arc-shaped cable detent frame; (9) Install a guide wheel on the outside of the wind turbine tower above the outer platform of the offshore wind turbine foundation, install a triangular cantilever beam at the lower end of the outer platform of the offshore wind turbine foundation, install a hinge device at the front of the triangular cantilever beam, install a traction winch at the root of the triangular cantilever beam, install the upper part of the pedestrian suspension bridge on the hinge, tie a traction rope to the lower end, pass the traction rope around the guide wheel and tie it to the traction winch, adjust and control the traction winch, and complete the retraction and extension of the pedestrian suspension bridge; (10) Install the inverter at the bottom of the wind turbine tower, connect the photovoltaic panel output cable to the junction box, lay the junction box output cable, enter the wind turbine tower through the circular cable well along the retractable cable cage, the arc-shaped cable back-twist frame, and the fixed cable cage, connect to the inverter inside the wind turbine tower, and connect the inverter to the frequency converter at the bottom of the wind turbine tower; (11) Open and secure the foldable photovoltaic panel, debug it, and connect it to the grid.

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