Flexible anti-storm floating photovoltaic system and working method

Abstract

The invention discloses a flexible storm-resistant floating photovoltaic system which comprises a photovoltaic platform framework, a photovoltaic power generation platform is arranged on the upper side of the photovoltaic platform framework, a central floater is coaxially arranged below the photovoltaic platform framework, and the central floater is fixedly connected with the photovoltaic platform framework through a floater support. A plurality of arc-shaped posture adjusting bodies are distributed on the periphery of the central floater in a circular array mode, the two ends, in the length direction, of each arc-shaped posture adjusting body are connected with rotating shafts which are coaxial, and the arc-shaped posture adjusting bodies can rotate around the axes of the rotating shafts at the two ends of the arc-shaped posture adjusting bodies. The light tracking function is achieved on the basis of wind wave resistance.

Description

Technical Field

[0001] The invention belongs to the field of water surface photovoltaics. Background Art

[0002] The sea is full of strong winds and waves, so the floating photovoltaic system must have good wind and wave resistance to ensure the stable operation and long-term safety of the system. By adopting a comprehensive design such as annular wind and wave resistant floats, customized photovoltaic power generation components and anchoring systems, the impact of waves on floating photovoltaic equipment can be effectively reduced and the stability of the system can be improved. However, this design generally causes the photovoltaic platform to be in a horizontal state at all times and unable to change its posture, and thus unable to achieve light chasing, which affects the power generation efficiency. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a flexible wind and wave resistant floating photovoltaic system and a working method, which has the function of chasing light on the basis of wind and wave resistance.

[0004] Technical solution: To achieve the above purpose, a flexible wind and wave resistant floating photovoltaic system of the present invention comprises a photovoltaic platform frame, the upper side of the photovoltaic platform frame is a photovoltaic power generation platform, a central float is coaxially arranged below the photovoltaic platform frame, and the central float is fixedly connected to the photovoltaic platform frame through a float bracket;

[0005] A number of arc-shaped posture adjustment bodies are distributed in a circular array around the central float, and both ends of the length direction of each arc-shaped posture adjustment body are respectively connected to coaxial rotating shafts, and the arc-shaped posture adjustment body can rotate around the axis of the rotating shafts at both ends of itself.

[0006] Furthermore, a number of combined bearing seats are distributed in a circular array below the photovoltaic platform frame, and the upper end of each bearing combination seat is fixedly supported and connected to the photovoltaic platform frame through a structural rod; there is an arc-shaped attitude adjustment body between any two adjacent bearing combination seats, and the rotating shafts at both ends of each arc-shaped attitude adjustment body are rotatably installed on the corresponding bearing combination seat through waterproof bearings.

[0007] Furthermore, the inner arc contour of the arc-shaped posture adjustment body intersects with the axis extension line of the rotating shaft and encloses a bowstring-shaped contour.

[0008] Furthermore, a ring-shaped rope-driven rotating wheel is sleeved on the outside of the middle section of each arc-shaped posture adjusting body, and the inner ring of the ring-shaped rope-driven rotating wheel is connected to the arc-shaped posture adjusting body through a support rod support, and the ring-shaped rope-driven rotating wheel is coaxial with the rotating shafts at both ends of the arc-shaped posture adjusting body; the driving device can drive each ring-shaped rope-driven rotating wheel to rotate along the axis.

[0009] Furthermore, the plurality of arc-shaped posture adjustment bodies include a plurality of arc-shaped floats and a plurality of arc-shaped counterweights, and the plurality of arc-shaped floats and the plurality of arc-shaped counterweights are distributed in an alternating circular array, so that there is an arc-shaped counterweight between any two adjacent arc-shaped floats, and there is an arc-shaped float between any adjacent arc-shaped counterweights; in an initial state, the arc convex side of each arc-shaped counterweight faces downward, and the arc convex side of each arc-shaped float faces upward.

[0010] Furthermore, in the initial state, each arc-shaped counterweight and the central float are completely immersed below the liquid surface; the upper half of each arc-shaped float floats above the water surface, and the lower half is immersed in the water.

[0011] Furthermore, there are three arc-shaped floats and three arc-shaped counterweights respectively. In an initial state, when viewed from above or above, the three arc-shaped floats and the three arc-shaped counterweights are alternately connected end to end to form a regular hexagon.

[0012] Furthermore, each annular rope-driven rotating wheel has an outer ring with an annular rope groove, and each annular rope-driven rotating wheel corresponds to a driving rope, which is tautly wound around the annular rope groove of the corresponding annular rope-driven rotating wheel for at least two turns, and both ends of the driving rope are led out upward along the tangential direction of the annular rope groove, and the upper ends of the two sections of straight driving ropes led out upward along the tangential direction of the annular rope groove are respectively connected to the rope index output end of winch a and the rope index output end of winch b. The winding and releasing actions of winch a and winch b can drive the driving rope to move linearly, thereby driving the annular rope-driven rotating wheel to rotate; each winch a and winch b are fixed on the photovoltaic platform frame.

[0013] Further, a working method of a flexible wind and wave resistant floating photovoltaic system:

[0014] Anti-wind and wave mode:

[0015] On the basis of the initial state, the first arc-shaped counterweight, the first arc-shaped float, the second arc-shaped counterweight, the second arc-shaped float, the third arc-shaped counterweight and the third arc-shaped float are actively controlled to rotate along the rotating shafts at both ends of each of them; the arc-shaped convex sides of the first arc-shaped float, the second arc-shaped float and the third arc-shaped float are all oriented away from the central area of ​​the entire device; the arc-shaped convex sides of the first arc-shaped counterweight, the second arc-shaped counterweight and the third arc-shaped counterweight are all oriented toward the central area of ​​the entire device. on one side of the central area; thereby, the centers of mass of the No. 1 circular arc-shaped float, the No. 2 circular arc-shaped float and the No. 3 circular arc-shaped float distributed in a circular array are further away from the central area of ​​the device; the centers of mass of the No. 1 circular arc-shaped counterweight, the No. 2 circular arc-shaped counterweight and the No. 3 circular arc-shaped counterweight are closer to the central area of ​​the device; at this time, the No. 1 circular arc-shaped counterweight, the No. 1 circular arc-shaped float, the No. 2 circular arc-shaped counterweight, the No. 2 circular arc-shaped float, the No. 3 circular arc-shaped counterweight and the No. 3 circular arc float are all at the same height.

[0016] Beneficial effect: In the wind and wave resistance state, the No. 1 arc-shaped counterweight, No. 1 arc-shaped float, No. 2 arc-shaped counterweight, No. 2 arc-shaped float, No. 3 arc-shaped counterweight and No. 3 arc-shaped float of the present invention are all at the same height, which not only reduces the impact area of ​​the sea wave transverse wave and alleviates the impact intensity of the sea wave transverse wave, but at the same time, the center of mass of the No. 1 arc-shaped float, No. 2 arc-shaped float and No. 3 arc-shaped float are all further away from the central area of ​​the device, which improves the overturning ability of the device against the longitudinal wave of the sea wave with the cooperation of the catenary mooring line, and reduces the burden of the catenary mooring line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural diagram of the device;

[0018] Figure 2 for Figure 1 Schematic diagram of the upward perspective;

[0019] Figure 3 for Figure 1 lateral view of;

[0020] Figure 4 for Figure 1 The schematic diagram after the photovoltaic platform skeleton and photovoltaic power generation platform are hidden;

[0021] Figure 5 It is a bottom view of the device in its initial state;

[0022] Figure 6 This is a bottom view of the device in the wind-resistant state;

[0023] Figure 7 It is an enlarged schematic diagram of the arc-shaped float of the device;

[0024] Figure 8 It is an enlarged schematic diagram of the arc-shaped counterweight of the device. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] As attached Figures 1 to 8A flexible wind and wave resistant floating photovoltaic system is shown, comprising a photovoltaic platform skeleton 3, a photovoltaic power generation platform 1 being provided on the upper side of the photovoltaic platform skeleton 3, a catenary mooring line 2 being connected to the periphery of the photovoltaic power generation platform 1, the catenary mooring line 2 acting as a flexible constraint on the device to prevent the device from drifting away, and being in a non-tensioned state, the influence of the catenary mooring line 2 on the overall posture of the device in this state can be ignored when the wind is calm; a disc-shaped central float 5 is coaxially arranged directly below the photovoltaic platform skeleton 3, and the central float 5 is fixedly connected to the photovoltaic platform skeleton 3 through a float bracket 6; a plurality of arc-shaped posture adjusting bodies 4 are distributed in a circular array around the central float 5, and the two ends of each arc-shaped posture adjusting body 4 in the length direction are respectively connected to mutually coaxial rotating shafts 14, and the arc-shaped posture adjusting body 4 can rotate around the axis of the rotating shafts 14 at both ends thereof.

[0027] There are several combined bearing seats 7 distributed in a circular array below the photovoltaic platform skeleton 3. The upper end of each bearing combination seat 7 is fixedly supported and connected to the photovoltaic platform skeleton 3 by a structural rod 8; there is an arc-shaped posture adjustment body 4 between any two adjacent bearing combination seats 7, and the rotating shafts 14 at both ends of each arc-shaped posture adjustment body 4 are rotatably installed on the corresponding bearing combination seat 7 through waterproof bearings.

[0028] A ring-shaped rope-driven rotating wheel 13 is sleeved on the middle section of each arc-shaped posture adjusting body 4. The inner circle of the ring-shaped rope-driven rotating wheel 13 is supported and connected to the arc-shaped posture adjusting body 4 through a support rod 16. The ring-shaped rope-driven rotating wheel 13 is coaxial with the rotating shaft 14 at both ends of the arc-shaped posture adjusting body 4. The driving device can drive each ring-shaped rope-driven rotating wheel 13 to rotate along the axis.

[0029] The outer circle of each annular rope-driven rotating wheel 13 is provided with an annular rope groove 74, and each annular rope-driven rotating wheel 13 corresponds to a driving rope 11. The driving rope 11 is tautly wound around the annular rope groove 74 of the corresponding annular rope-driven rotating wheel 13 for at least two circles, and both ends of the driving rope 11 are led out upward along the tangential direction of the annular rope groove 74. The upper ends of the two sections of straight driving ropes 11 led out upward along the tangential direction of the annular rope groove 74 are respectively connected to the rope index output ends of the a winch 9 and the b winch 10. The winding and releasing actions of the a winch 9 and the b winch 10 can drive the driving rope 11 to move linearly, thereby driving the annular rope-driven rotating wheel 13 to rotate; each a winch 9 and the b winch 10 are fixed on the photovoltaic platform frame 3.

[0030] The plurality of arc-shaped posture adjusting bodies 4 include a plurality of arc-shaped floats 4a and a plurality of arc-shaped counterweights 4b, which are distributed in an alternating circular array so that there is an arc-shaped counterweight 4b between any two adjacent arc-shaped floats 4a, and there is an arc-shaped float 4a between any adjacent arc-shaped counterweights 4b; in an initial state, the arc convex side of each arc-shaped counterweight 4b faces downward, and the arc convex side of each arc-shaped float 4a faces upward.

[0031] like Figure 7 and 8 As shown, the inner arc contour 41 of the arc-shaped posture adjustment body 4 intersects with the axis extension line 13 of the rotating shaft 14 and encloses a bowstring-shaped contour 51 .

[0032] The arc-shaped float 4a has a density smaller than that of seawater and is a hollow metal shell. The arc-shaped counterweight 4b has a density larger than that of seawater. In the initial state, each arc-shaped counterweight 4b and the central float 5 are completely submerged below the liquid surface 17. The upper half of each arc-shaped float 4a floats above the water surface, and the lower half is submerged in the water.

[0033] like Figure 5 and 6 As shown, there are three arc-shaped floats 4a and three arc-shaped counterweights 4b, respectively. In the initial state, when viewed from above or above, the three arc-shaped floats 4a and the three arc-shaped counterweights 4b are alternately connected end to end to form a regular hexagon, and the six sides of the regular hexagon correspond to six directions.

[0034] Working principle: For ease of understanding, Figure 5 and 6 , the six arc-shaped posture adjustment bodies 4 are numbered: in an upward viewing angle, the three arc-shaped floats 4a are respectively marked as the first arc-shaped float 4.1a, the second arc-shaped float 4.2a and the third arc-shaped float 4.3a in a clockwise direction; the three arc-shaped counterweights 4b are respectively marked as the first arc-shaped counterweight 4.1b, the second arc-shaped counterweight 4.2b and the third arc-shaped counterweight 4.3b in a clockwise direction; the outer periphery of the disc-shaped central float 5 includes the first arc-shaped counterweight 4.1b, the first arc-shaped float 4.1a, the second arc-shaped counterweight 4.2b, the second arc-shaped float 4.2a, the third arc-shaped counterweight 4.3b and the third arc-shaped float 4.3a in a clockwise direction.

[0035] Chasing light in calm seas:

[0036] When the sun is at the side of the photovoltaic power generation platform 1 close to the first arc-shaped float 4.1a, based on the initial state, the first arc-shaped counterweight 4.1b and the second arc-shaped counterweight 4.2b are controlled to rotate 180° along the axis of the rotating shaft 14 at both ends, so that the convex sides of the first arc-shaped counterweight 4.1b and the second arc-shaped counterweight 4.2b, which were originally facing downward, are turned upward, so that the convex sides of the first arc-shaped counterweight 4.1b and the second arc-shaped counterweight 4.2b, which were originally completely immersed in the water, are exposed to the water surface, thereby reducing the drainage volume of the entire device facing the sunlight side; At the same time, the second arc-shaped float 4.2a and the third arc-shaped float 4.3a are actively driven to rotate 180° along the axis of the rotating shaft 14 at both ends of each of them, and the convex sides of the arcs of the second arc-shaped float 4.2a and the third arc-shaped float 4.3a are changed from facing upward to facing downward, so that the convex sides of the second arc-shaped float 4.2a and the third arc-shaped float 4.3a are changed from being exposed above the water surface to being immersed in the water, thereby increasing the drainage volume of the entire device away from the sunlight side; thereby, the originally horizontal photovoltaic power generation platform 1 is tilted toward the direction of the sun, thereby increasing the light intensity received by the photovoltaic power generation platform 1;

[0037] Similarly, it can be known that the light-chasing operation mode is performed when the sun is located at the photovoltaic power generation platform 1 close to the second arc-shaped float 4.2a or the third arc-shaped float 4.3a.

[0038] When the sun is at the side of the photovoltaic power generation platform 1 close to the first arc-shaped counterweight 4.1b, based on the initial state, the a winch 9 and the b winch 10 corresponding to the first arc-shaped counterweight 4.1b are controlled to actively drive the first arc-shaped counterweight 4.1b to rotate 180° along the axis of the rotating shaft 14 at both ends of itself, so that the convex side of the first arc-shaped counterweight 4.1b, which was originally facing downward, becomes upward, so that the convex side of the first arc-shaped counterweight 4.1b, which was originally completely immersed in the water, emerges from the water surface, thereby reducing At the same time, the second arc-shaped float 4.2a is actively driven to rotate 180° along the axis of the rotating shaft 14 at both ends of itself, and the convex side of the arc-shaped float 4.2a originally facing upward changes to facing downward, so that the convex side of the second arc-shaped float 4.2a changes from being exposed above the water surface to being immersed in the water, thereby increasing the drainage volume of the device as a whole on the side away from the sunlight; thereby, the originally horizontal photovoltaic power generation platform 1 is tilted toward the direction of the sun, thereby increasing the light intensity received by the photovoltaic power generation platform 1;

[0039] Similarly, it can be known that the light-chasing operation mode is performed when the sun is located on the photovoltaic power generation platform 1 close to the second arc-shaped counterweight 4.2b or the third arc-shaped counterweight 4.3b.

[0040] Anti-wind and wave mode:

[0041] On the basis of the initial state, the first arc-shaped counterweight 4.1b, the first arc-shaped float 4.1a, the second arc-shaped counterweight 4.2b, the second arc-shaped float 4.2a, the third arc-shaped counterweight 4.3b and the third arc-shaped float 4.3a are actively controlled to rotate along the rotating shaft 14 at both ends of each of the a hoist 9 and the b hoist 10; so that the arc convex sides of the first arc-shaped float 4.1a, the second arc-shaped float 4.2a and the third arc-shaped float 4.3a are all facing the side away from the central area of ​​the whole device; the arc convex sides of the first arc-shaped counterweight 4.1b, the second arc-shaped counterweight 4.2b and the third arc-shaped counterweight 4.3b are all facing the side close to the central area of ​​the whole device, such as Figure 6 As shown; so that the mass centers of the first arc-shaped float 4.1a, the second arc-shaped float 4.2a and the third arc-shaped float 4.3a distributed in a circular array are further away from the central area of ​​the device; the mass centers of the first arc-shaped counterweight 4.1b, the second arc-shaped counterweight 4.2b and the third arc-shaped counterweight 4.3b are closer to the central area of ​​the device; at this time, the first arc-shaped counterweight 4.1b, the first arc-shaped float 4.1a, the second arc-shaped counterweight 4.2b, the second arc-shaped float 4. 2a, the third arc-shaped counterweight 4.3b and the third arc-shaped float 4.3a are all at the same height, which not only reduces the impact area of ​​the sea wave transverse wave and alleviates the impact intensity of the sea wave transverse wave, but also at the same time, the center of mass of the first arc-shaped float 4.1a, the second arc-shaped float 4.2a and the third arc-shaped float 4.3a are further away from the central area of ​​the device, which improves the overturning ability of the device against the longitudinal wave of the sea wave with the cooperation of the catenary mooring line 2, and at the same time reduces the burden of the catenary mooring line 2.

[0042] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flexible wind and wave resistant floating photovoltaic system, characterized by: It comprises a photovoltaic platform frame (3), the upper side of the photovoltaic platform frame (3) is a photovoltaic power generation platform (1), a central float (5) is coaxially arranged below the photovoltaic platform frame (3), and the central float (5) is fixedly connected to the photovoltaic platform frame (3) via a float bracket (6); A plurality of arc-shaped posture adjustment bodies (4) are distributed in a circular array around the central float (5), and both ends of the arc-shaped posture adjustment bodies (4) in the length direction are respectively connected to coaxial rotating shafts (14), and the arc-shaped posture adjustment bodies (4) can rotate around the axes of the rotating shafts (14) at both ends of themselves.

2. The flexible wind and wave resistant floating photovoltaic system according to claim 1, characterized in that: A plurality of combined bearing seats (7) are distributed in a circular array below the photovoltaic platform frame (3); the upper end of each of the combined bearing seats (7) is fixedly supported and connected to the photovoltaic platform frame (3) via a structural rod (8); there is an arc-shaped posture adjustment body (4) between any two adjacent bearing combination seats (7); and the rotating shafts (14) at both ends of each of the arc-shaped posture adjustment bodies (4) are rotatably mounted on the corresponding bearing combination seat (7) via waterproof bearings.

3. The flexible wind and wave resistant floating photovoltaic system according to claim 1 is characterized by: The inner arc contour (41) of the arc-shaped posture adjustment body (4) intersects with the axis extension line (13) of the rotating shaft (14) and encloses a bowstring-shaped (51) contour.

4. The flexible wind and wave resistant floating photovoltaic system according to claim 3 is characterized by: A ring-shaped rope-driven rotating wheel (13) is sleeved on the middle section of each arc-shaped posture adjusting body (4); the inner ring of the ring-shaped rope-driven rotating wheel (13) is supported and connected to the sleeved arc-shaped posture adjusting body (4) through a support rod (16); the ring-shaped rope-driven rotating wheel (13) is coaxial with the rotating shafts (14) at both ends of the sleeved arc-shaped posture adjusting body (4); and the driving device can drive each ring-shaped rope-driven rotating wheel (13) to rotate along the axis.

5. The flexible wind and wave resistant floating photovoltaic system according to claim 4 is characterized by: The plurality of arc-shaped posture adjustment bodies (4) comprise a plurality of arc-shaped floats (4a) and a plurality of arc-shaped counterweights (4b), wherein the plurality of arc-shaped floats (4a) and the plurality of arc-shaped counterweights (4b) are arranged in a circular array alternating with each other, so that there is an arc-shaped counterweight (4b) between any two adjacent arc-shaped floats (4a), and there is an arc-shaped float (4a) between any two adjacent arc-shaped counterweights (4b); in an initial state, the arc-shaped convex side of each arc-shaped counterweight (4b) faces downward, and the arc-shaped convex side of each arc-shaped float (4a) faces upward.

6. The flexible wind and wave resistant floating photovoltaic system according to claim 5 is characterized by: In the initial state, each arc-shaped counterweight (4b) and the central float (5) are completely immersed below the liquid surface (17); the upper half of each arc-shaped float (4a) floats above the water surface, and the lower half is immersed in the water.

7. The flexible wind and wave resistant floating photovoltaic system according to claim 2 is characterized by: There are three arc-shaped floats (4a) and three arc-shaped counterweights (4b), respectively. In an initial state, when viewed from above or above, the three arc-shaped floats (4a) and the three arc-shaped counterweights (4b) are alternately connected end to end to form a regular hexagon.

8. The flexible wind and wave resistant floating photovoltaic system according to claim 4 is characterized by: The outer ring of each ring-shaped rope-driven rotating wheel (13) has a ring-shaped rope groove (74), and each ring-shaped rope-driven rotating wheel (13) corresponds to a driving rope (11). The driving rope (11) is wound around the corresponding ring-shaped rope groove (74) of the ring-shaped rope-driven rotating wheel (13) in a taut state for at least two turns, and both ends of the driving rope (11) are led out upward along the tangent direction of the ring-shaped rope groove (74). The upper ends of the two straight driving ropes (11) are respectively connected to the rope index output ends of the a hoist (9) and the b hoist (10); the winding and unwinding actions of the a hoist (9) and the b hoist (10) can drive the driving rope (11) to move linearly, thereby driving the annular rope-driven rotating wheel (13) to rotate; each a hoist (9) and the b hoist (10) are fixed on the photovoltaic platform frame (3).

9. The working method of the flexible wind and wave resistant floating photovoltaic system according to claim 7, characterized in that: Anti-wind and wave mode: Based on the initial state, the first arc-shaped counterweight (4.1b), the first arc-shaped float (4.1a), the second arc-shaped counterweight (4.2b), the second arc-shaped float (4.2a), the third arc-shaped counterweight (4.3b) and the third arc-shaped float (4.3a) are actively controlled to rotate along the rotating shafts (14) at both ends of each of them; the arc-shaped convex sides of the first arc-shaped float (4.1a), the second arc-shaped float (4.2a) and the third arc-shaped float (4.3a) are all directed away from the central area of ​​the entire device; the arc-shaped convex sides of the first arc-shaped counterweight (4.1b), the second arc-shaped counterweight (4.2b) and the third arc-shaped counterweight (4.3b) are all directed toward the central area of ​​the device. The center of mass of the first arc-shaped float (4.1a), the second arc-shaped float (4.2a) and the third arc-shaped float (4.3a) distributed in a circular array are further away from the center of the device; the center of mass of the first arc-shaped counterweight (4.1b), the second arc-shaped counterweight (4.2b) and the third arc-shaped counterweight (4.3b) are closer to the center of the device; at this time, the first arc-shaped counterweight (4.1b), the first arc-shaped float (4.1a), the second arc-shaped counterweight (4.2b), the second arc-shaped float (4.2a), the third arc-shaped counterweight (4.3b) and the third arc-shaped float (4.3a) are all at the same height.

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