Reducing water surface photovoltaic device

Abstract

The utility model provides a variable-diameter water surface photovoltaic device, which belongs to the field of reservoir surface photovoltaic power generation equipment, and comprises a variable-diameter buoy power generation device and a plurality of cable anchor positioning devices, the variable-diameter buoy power generation device comprises a central floating plate mechanism and a circumferential floating plate mechanism, the central floating plate mechanism is connected with the circumferential floating plate mechanism through a radial telescopic mechanism, and the cable anchor positioning devices are arranged on the central floating plate mechanism. A central photovoltaic panel is arranged on the upper side of the central floating plate mechanism, a plurality of circumferential photovoltaic panel mechanisms are arranged on the upper sides of the circumferential floating plate mechanisms, each circumferential floating plate mechanism comprises a plurality of circumferential floating plate blocks, and the circumferential floating plate blocks are connected through an annular telescopic mechanism; the cable anchor positioning device is arranged on the reservoir slope and comprises two cable anchors which are arranged on the reservoir slope and have different elevations, a mooring rope is connected between the two cable anchors, and the circumferential floating plate mechanism is in sliding connection with the mooring rope through a pull rope. According to the device and the method, photovoltaic power generation is carried out by utilizing the water surfaces of the upper reservoir and the lower reservoir, and reliable use under the conditions of large water level amplitude and large water surface area change is realized.

Description

Technical Field

[0001] The utility model relates to the field of reservoir surface photovoltaic power generation equipment, and particularly relates to a variable-diameter water surface photovoltaic device. Background Technique

[0002] The solar photovoltaic power generation system has been very mature, which mainly includes solar panels (photovoltaic panels), a controller and an inverter, and is widely used in various industries; especially in the wild where power supply is inconvenient or unavailable, the application of photovoltaic power generation is more common.

[0003] The pumped-storage power station is an energy storage device with power regulation function. Its characteristics are upper and lower reservoirs with different elevations and a large water area. The reservoir of the pumped-storage power station is formed by building a water retaining dam in a mountain depression according to the terrain. Therefore, the reservoir basin has an inverted trapezoidal cross-section that is larger at the top and smaller at the bottom due to the shape of the mountain. Using the upper and lower reservoir water surfaces for power generation can not only increase the power generation but also reduce the water evaporation loss caused by partial blocking of sunlight on the water surface. How to make full use of the reservoir surface of the pumped-storage power station and give play to greater engineering economic and social benefits is a research topic worthy of study, and there is no relevant mature technology yet. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a variable-diameter water surface photovoltaic device, which uses the upper and lower reservoir water surfaces for photovoltaic power generation and realizes reliable use under the conditions of large water level amplitude and large water surface area change.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a variable-diameter water surface photovoltaic device, including a variable-diameter floating barrel power generation device and several groups of cable anchor positioning devices. The variable-diameter floating barrel power generation device includes a central floating plate mechanism and a circumferential floating plate mechanism. The central floating plate mechanism and the circumferential floating plate mechanism are connected by a radial telescopic mechanism. A central photovoltaic panel is arranged on the upper side of the central floating plate mechanism, and several groups of circumferential photovoltaic panel mechanisms are arranged on the upper side of the circumferential floating plate mechanism. The circumferential floating plate mechanism includes several circumferential floating plate blocks distributed in a ring shape, and the circumferential floating plate blocks are connected by a circumferential telescopic mechanism; the cable anchor positioning device is arranged on the reservoir slope and includes two cable anchors at different elevations arranged on the reservoir slope, a cable is connected between the two cable anchors, and the circumferential floating plate mechanism is slidably connected to the cable through a pull rope.

[0006] In a preferred solution, a hanging ring or a rope sleeve that slides along the cable is arranged at the end of the pull rope.

[0007] In a preferred solution, the radial telescopic mechanism includes an outer sleeve and an inner sleeve. The inner sleeve is sleeved in the outer sleeve and slides along the outer sleeve. The two ends of the radial telescopic mechanism are respectively hinged to the central floating plate mechanism and the circumferential floating plate mechanism.

[0008] In a preferred embodiment, guide wheels are provided on the outer side of the inner sleeve, and the guide wheels slide along the inner wall of the outer sleeve.

[0009] In a preferred embodiment, the circumferential telescopic mechanism includes an arc-shaped outer sleeve and an arc-shaped inner sleeve sleeved in the arc-shaped outer sleeve. Moving wheels that move along the inner wall of the arc-shaped outer sleeve are provided on the outer side of the arc-shaped inner sleeve. Both ends of the circumferential telescopic mechanism are hinged to two adjacent sets of circumferential floating plates.

[0010] In a preferred embodiment, the circumferential floating plate mechanism further includes an annular floating cylinder. The circumferential floating plates are distributed along the inner side of the annular floating cylinder and are hinged to the annular floating cylinder. A compression spring is provided inside the annular floating cylinder.

[0011] In a preferred embodiment, each set of the circumferential photovoltaic panel mechanisms is installed across two adjacent sets of circumferential floating plates. The circumferential photovoltaic panel mechanism includes several sets of side plate photovoltaic panels. The upper sides between the side plate photovoltaic panels are hinged through plate hinges to form a "W" - shaped structure. The bottom of the side plate photovoltaic panels at both ends of each set of circumferential photovoltaic panel mechanisms is hinged to the circumferential floating plates.

[0012] In a preferred embodiment, bottom pulleys are provided on the lower sides of the middle side plate photovoltaic panels of each set of the circumferential photovoltaic panel mechanisms and move along the circumferential floating plates.

[0013] A variable - diameter water - surface photovoltaic device provided by the present utility model has the following beneficial effects:

[0014] 1. During the change of the reservoir basin water level, the variable - diameter floating - cylinder power generation device is always in a state of being towed by the cable anchor. The variable - diameter floating - cylinder power generation device remains in the center of the reservoir basin and will not be greatly affected by the water flow disturbance in the reservoir basin to change its position, ensuring good lighting conditions.

[0015] 2. Under the pulling action of the pull rope, the diameter of the variable - diameter floating - cylinder power generation device changes, and it can adapt to the water - surface area sizes at different positions. It ensures that at each water level, the variable - diameter floating - cylinder power generation device can reach an appropriate diameter through automatic pulling to achieve the maximum water - surface coverage rate and power generation effect.

[0016] 3. When the diameter of the variable - diameter floating - cylinder power generation device becomes larger or smaller, the deployment states of the circumferential photovoltaic panel mechanisms are different, being in a deployed, retracted, or semi - retracted state, ensuring the coverage of the side - plate photovoltaic panels on the water surface and realizing reliable use under the conditions of large water - level amplitude and large water - surface area change. Description of the Drawings

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the present invention at the highest water level;

[0019] Figure 2 Top view of the circumferential photovoltaic panel mechanism and the central photovoltaic panel at the highest water level;

[0020] Figure 3 Structural schematic diagram of the present invention at the lowest water level;

[0021] Figure 4 Top view of the circumferential photovoltaic panel mechanism and the central photovoltaic panel at the lowest water level;

[0022] Figure 5 Installation structural schematic diagram of the circumferential photovoltaic panel mechanism;

[0023] Figure 6 Installation structural schematic diagram of the central floating plate mechanism and the circumferential floating plate mechanism;

[0024] Figure 7 Transverse cross-sectional view of the radial telescopic mechanism;

[0025] In the figure: cable anchor positioning device 1, cable anchor 101, cable 102, pull rope 103, hanging ring 104, floating box 105; central floating plate mechanism 2, central floating plate 201; circumferential floating plate mechanism 3, circumferential floating plates 301, annular floating cylinder 302, compression spring 303, circumferential telescopic mechanism 304, arc-shaped outer sleeve 3041, arc-shaped inner sleeve 3042; radial telescopic mechanism 4, outer sleeve 401, inner sleeve 402, guide wheel 403; central photovoltaic panel 5; circumferential photovoltaic panel mechanism 6, side plate photovoltaic panel 601, plate hinge 602, bottom pulley 603; reservoir slope 7; current collector 8; inverter 9; cable 10; transformer 11. Specific embodiments

[0026] The following will further illustrate the technical solutions of the present invention in conjunction with the drawings.

[0027] A clear and complete description is given. Obviously, the described embodiments are some embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Embodiment 1:

[0032] As Figures 1 to 4 shown, a variable-diameter floating photovoltaic device includes a variable-diameter floating barrel power generation device and several groups of cable anchor positioning devices 1, and the cable anchor positioning devices 1 are distributed circumferentially along the variable-diameter floating barrel power generation device.

[0033] As Figure 6 shown, the variable-diameter floating barrel power generation device includes a central floating plate mechanism 2 and a circumferential floating plate mechanism 3. The central floating plate mechanism 2 and the circumferential floating plate mechanism 3 are connected by a radial telescopic mechanism 4. The circumferential floating plate mechanism 3 is arranged on the outer ring of the central floating plate mechanism 2. The central floating plate mechanism 2 and the circumferential floating plate mechanism 3 form the floating structure of the overall support device.

[0034] A central photovoltaic panel 5 is arranged on the upper side of the central floating plate mechanism 3. The central floating plate mechanism 3 is a non-foldable structure and can be a whole floating plate. In this embodiment, the central floating plate mechanism 2 includes several central floating plate blocks 201. The central floating plate blocks 201 are fixedly connected or hinged to each other and are arranged at the central position of the variable-diameter floating barrel power generation device. The central photovoltaic panel 5 is installed on the central floating plate mechanism 3, forming an overall stable structure that is not affected by wave disturbances.

[0035] There are several groups of circumferential photovoltaic panel mechanisms 6 provided on the upper side of the circumferential floating plate mechanism 3, and the circumferential floating plate mechanism 3 supports the circumferential photovoltaic panel mechanisms 6. The circumferential floating plate mechanism 3 includes several circumferential floating plate blocks 301 distributed in a ring shape, and the circumferential floating plate blocks 301 are connected by a circumferential telescopic mechanism 304, so that the relative distance between adjacent circumferential floating plate blocks 301 can be changed, thereby adjusting the diameter of the circumferential floating plate mechanism 3.

[0036] In this embodiment, the radial telescopic mechanism 4 and the circumferential telescopic mechanism 304 are springs. It does not affect the connection between the central floating plate mechanism 2 and the circumferential floating plate mechanism 3 and between adjacent circumferential floating plate blocks 301. At the same time, under the pulling action of the cable anchor positioning device 1, the distances between the central floating plate mechanism 2 and the circumferential floating plate mechanism 3 and between adjacent circumferential floating plate blocks 301 can be adjusted to meet the variable diameter requirements.

[0037] The central photovoltaic panel 5 and the circumferential photovoltaic panel mechanisms 6 are both electrically connected to the current collector 8, the current collector 8 is electrically connected to the inverter 9, and the inverter 9 is electrically connected to the transformer 11 on the shore through the cable 10. The current collector 8 and the inverter 9 are arranged on the central floating plate mechanism 2 or the circumferential floating plate mechanism 3. In specific use, the cable 10 can be arranged on the central floating plate mechanism 2 or the circumferential floating plate mechanism 3 to keep the cable in a floating state on the water surface.

[0038] The cable anchor positioning device 1 is arranged on the reservoir slope 7 and is a mooring device for the variable diameter floating drum power generation device. It includes two cable anchors 101 at different elevations arranged on the reservoir slope 7. A cable 102 is connected between the two cable anchors 101. The circumferential floating plate mechanism 3 is slidably connected to the cable 102 through a pull rope 103. A hanging ring 104 that slides along the cable 102 is provided at the end of the pull rope 103. The hanging ring 104 can also be replaced by a rope loop. The variable diameter floating drum power generation device is towed by the pull rope 103 and then connected with the hanging ring 104 sleeved on the cable 102.

[0039] Preferably, the pull rope 103 is arranged on several floating boxes 105, and the floating boxes 105 are hinged to each other to provide buoyancy and support force for it when the pull rope 103 is on the water surface.

[0040] In this way, during the change of the reservoir basin water level, the variable diameter floating drum power generation device is always in a state of being towed by the cable anchor 10. The variable diameter floating drum power generation device will remain in the center of the reservoir basin and will not be greatly affected by the disturbance of the reservoir basin water flow to change its position, ensuring good lighting conditions. There are at least 3 groups of cable anchor positioning devices 1 or more around the reservoir basin to form good towing and position limitation for the variable diameter floating drum power generation device.

[0041] Embodiment 2:

[0042] Different from Embodiment 1, such as Figure 6 and Figure 7As shown, the radial telescopic mechanism 4 includes an outer sleeve 401 and an inner sleeve 402. The inner sleeve 402 is sleeved inside the outer sleeve 401 and slides along the outer sleeve 401. Both ends of the radial telescopic mechanism 4 are respectively hinged to the central floating plate mechanism 2 and the circumferential floating plate mechanism 3.

[0043] Preferably, a guide wheel 403 is provided on the outer side of the inner sleeve 402, and the guide wheel 403 slides along the inner wall of the outer sleeve 401.

[0044] The radial telescopic mechanism 4 extends or retracts along the outer sleeve 401 through the inner sleeve 402 to adjust the overall length of the radial telescopic mechanism 4, so as to adapt to the diameter change of the circumferential floating plate mechanism 3.

[0045] The circumferential telescopic mechanism 304 includes an arc-shaped outer sleeve 3041 and an arc-shaped inner sleeve 3042 sleeved in the arc-shaped outer sleeve 3041. A moving wheel is provided on the outer side of the arc-shaped inner sleeve 3042 and moves along the inner wall of the arc-shaped outer sleeve 3042. Both ends of the circumferential telescopic mechanism 304 are hinged to two adjacent circumferential floating plate blocks 301. The cooperation structure of the circumferential telescopic mechanism 304 and the radial telescopic mechanism 4 is the same, and the shape is arc-shaped.

[0046] By retracting or extending the arc-shaped inner sleeve 3042 into or out of the arc-shaped outer sleeve 3041, the length of the circumferential telescopic mechanism 304 is adjusted, so that when the diameter of the circumferential floating plate mechanism 3 changes, the relative distance between adjacent circumferential floating plate blocks 301 can be changed.

[0047] Preferably, the circumferential floating plate mechanism 3 further includes an annular floating cylinder 302. The circumferential floating plate blocks 301 are distributed along the inner side of the annular floating cylinder 302 and are hinged to the annular floating cylinder 302 through hinge supports. A compression spring 303 is provided inside the annular floating cylinder 302.

[0048] The annular floating cylinder 302 and the compression spring 303 form a telescopic structure similar to a threaded pipe. The material of the annular floating cylinder 302 is rubber. When the outside of the annular floating cylinder 302 is not pulled by a pull rope, it shrinks to the minimum diameter state under the action of the compression spring 303.

[0049] Example 3:

[0050] Different from Example 2, as Figures 1 to 5 shown, each group of the circumferential photovoltaic panel mechanism 6 is installed across two adjacent circumferential floating plate blocks 301. The circumferential photovoltaic panel mechanism 6 includes several groups of side plate photovoltaic panels 601. The upper sides of the side plate photovoltaic panels 601 are hinged through plate hinges 602 to form a "W" - shaped structure. The bottoms of the side plate photovoltaic panels 601 at both ends of each group of the circumferential photovoltaic panel mechanism 6 are hinged to the circumferential floating plate blocks 301, or hinged to the annular floating cylinder 302.

[0051] When the distance between the circumferential floating plates 301 decreases, the circumferential photovoltaic panel mechanism 6 folds up. When the distance between the circumferential floating plates 301 increases, the angle of the side plate photovoltaic panels 601 changes, and the circumferential photovoltaic panel mechanism 6 is in an unfolded state.

[0052] Preferably, a bottom pulley 603 is provided under the middle side plate photovoltaic panel 601 of each group of the circumferential photovoltaic panel mechanisms 6 and moves along the circumferential floating plates 301. This facilitates the adjustment of the angle of the side plate photovoltaic panels 601 during the unfolding or folding of the circumferential photovoltaic panel mechanism 6.

[0053] When the reservoir basin is at the lowest water level, as Figure 3 and 4 shown, the circumferential telescopic mechanism 304 and the radial telescopic mechanism 4 are both in a retracted state, and the side plate photovoltaic panels 601 are in a vertically folded state. At this time, the variable-diameter floating drum power generation device is in the minimum diameter state.

[0054] When the water level of the reservoir basin gradually rises, under the action of the tensile forces of the respective pull ropes 103, the radial telescopic mechanism 4 extends, the circumferential floating plate mechanism 3 moves radially outward, and at the same time the circumferential telescopic mechanism 7 extends, the distance between the circumferential floating plates 301 increases, and the circumferential photovoltaic panel mechanism 6 gradually unfolds. When the reservoir basin is at the highest water level state, the variable-diameter floating drum power generation device is in the maximum diameter state. In principle, when the reservoir basin is at the highest water level state, the side plate photovoltaic panels 601 of the circumferential photovoltaic panel mechanism 6 are in a horizontally laid state, as Figure 1 and 2 shown.

[0055] In this embodiment, there are at least 3 groups of cable anchor positioning devices 1 or more around the reservoir basin to form good pulling and position limitation for the variable-diameter floating drum power generation device.

[0056] As Figure 5As shown in the figure, the arrangement of the cable anchors 101 and cables 102 of a set of cable anchor positioning devices 1 can be consistent with the slope line in the elevation direction of the reservoir slope, or can be arranged in the form of an oblique angle. The oblique angle arrangement is mainly because the reservoir slope gradients and forms of each surface of the reservoir basin vary greatly. To ensure that the variable-diameter floating drum power generation device can ensure a greater unfolding degree of the side plate photovoltaic panels 601 and the best light-receiving positioning position at different elevation water levels, systematic overall planning and reasonable design of each group of cable anchors 101 and cables 102 are determined. For the same reason, the positions of the upper and lower anchor points of each group of cable anchors 101 can also be reasonably matched with the highest and lowest water levels of the reservoir basin. That is, the cable anchors 101 with higher elevations can be lower than the highest water level of the reservoir basin, and the cable anchors 101 with lower elevations can also be higher than the lowest water level. In this way, when the variable-diameter floating drum power generation device is at the highest or lowest water level of the reservoir basin, the hanging ring 104 of the pull rope 103 has reached the end of the cable 102, and the pull rope 103 and the floating box 105 may leave the water surface and be in an inclined pulling state in elevation, which can also achieve the effect of optimizing the unfolding degree of the side plate photovoltaic panels 601 and the best light-receiving positioning position.

[0057] The installation method of this device is as follows:

[0058] (1) Cable anchor construction: After the excavation of the reservoir slope bank is completed, first measure and set points to determine the installation position of the cable anchor 101, and then continue to complete the excavation of the cable anchor pit according to the requirements of the cable anchor point excavation. Then install the cable anchor 101 embedded parts and pour concrete. The construction of the reservoir basin waterproof layer and the cable anchor concrete pouring are carried out synchronously. After the concrete age reaches, the cable 102 is wound.

[0059] (2) Installation of the variable-diameter floating drum power generation device: Install it under the state of the highest water level. The central floating plate mechanism 2 and the circumferential floating plate mechanism 3 are assembled on the ground. The central floating plate mechanism 2 and the circumferential floating plate mechanism 3 are assembled into an integral structure through the radial telescopic mechanism 4 and the circumferential telescopic mechanism 304, and then hoisted to the water surface by a lifting device, or pulled along the slideway arranged on the reservoir slope 7 in cooperation with a winch and slipped to the water surface. The circumferential photovoltaic panel mechanism 6 and the central photovoltaic panel 5 are assembled and accessories are installed on the water surface. At this time, the variable-diameter floating drum power generation device is in the state of the maximum diameter.

[0060] (3) Pull rope adjustment: Before lowering the water level of the reservoir basin, use a temporary pull rope to hang the variable-diameter floating drum power generation device, slowly lower the water level of the reservoir basin to the lowest water level state, then connect the pull rope 103 to the cable 102 through the hanging ring 104, adjust the length of the pull rope 103, and adjust the variable-diameter floating drum power generation device to the center position of the reservoir basin water surface. After adjusting the variable-diameter floating drum power generation device to the center position of the reservoir basin water surface, remove the temporary pull rope.

[0061] Using a temporary pull rope to hang is to prevent the variable-diameter floating drum power generation device from colliding with the bank slope and being damaged during the process of water level drop.

[0062] (4)Debugging and operation: During the debugging process, first conduct single-device unit debugging for the entire device, then conduct multi-system joint debugging, and finally conduct overall and systematic debugging of the entire system. After that, run the water level in the reservoir basin up and down several cycles between the highest and lowest water levels. Adjust and repair in a timely manner if problems occur, and put it into formal operation after the debugging is error-free.

[0063] The working principle of this device is as follows:

[0064] When the reservoir basin is at the lowest water level, the central floating plate mechanism 2 and the central photovoltaic panel 5 are in the central position, the circumferential telescopic mechanism 304 and the radial telescopic mechanism 4 are both in the retracted state, and the side plate photovoltaic panel 601 is in the vertical retracted state. At this time, the variable-diameter floating drum power generation device is in the minimum diameter state. It is reasonably matched with the minimum water surface area of the reservoir basin to make full use of the water surface area.

[0065] Because the lengths of the cable anchors and stay ropes of each group in the reservoir basin have been reasonably planned and designed as above, when the water level in the reservoir basin gradually rises, the central floating plate mechanism 2 and the central photovoltaic panel 5 are in the central position, with unchanged size, but under the action of the pulling force of each stay rope 103, the annular floating drum 302 is continuously enlarged as the water level rises, the radial telescopic mechanism 4 extends, the circumferential floating plate mechanism 3 moves radially outward, and at the same time the circumferential telescopic mechanism 7 extends, and the distance between the circumferential floating plate blocks 301 increases, and the circumferential photovoltaic panel mechanism 6 gradually unfolds. When the reservoir basin water level is at the highest water level state, the variable-diameter floating drum power generation device is in the maximum diameter state. In principle, when the reservoir basin water level is at the highest water level state, the side plate photovoltaic panel 601 of the circumferential photovoltaic panel mechanism 6 is in the horizontal laying state, as Figure 1 and 2 shown. It is reasonably matched with the water surface area at the highest water level. It is through the overall design of reasonably designing the positions of the cable anchors 101 and the lengths of the cable ropes 102, the lengths and hanging points of each stay rope 103, the maximum and minimum diameters of the variable-diameter floating drum power generation device, etc., to ensure that at each water level, the variable-diameter floating drum power generation device can reach an appropriate diameter through automatic pulling to achieve the maximum water surface coverage rate and power generation effect.

[0066] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here, that is, the equivalent replacement improvements within this range are also within the protection scope of the present invention.

Claims

1. A variable-diameter floating PV device, characterized in that, It includes a variable-diameter buoy power generation device and several groups of cable anchor positioning devices (1). The variable-diameter buoy power generation device includes a central floating plate mechanism (2) and a circumferential floating plate mechanism (3). The central floating plate mechanism (2) is connected to the circumferential floating plate mechanism (3) through a radial telescopic mechanism (4). A central photovoltaic panel (5) is arranged on the upper side of the central floating plate mechanism (2), and several groups of circumferential photovoltaic panel mechanisms (6) are arranged on the upper side of the circumferential floating plate mechanism (3). The circumferential floating plate mechanism (3) includes several circumferential floating plate blocks (301) distributed in a ring shape, and the circumferential floating plate blocks (301) are connected through a circumferential telescopic mechanism (304). The cable anchor positioning device (1) is arranged on the reservoir slope (7), and includes two cable anchors (101) at different elevations arranged on the reservoir slope (7). A cable (102) is connected between the two cable anchors (101), and the circumferential floating plate mechanism (3) is slidably connected to the cable (102) through a pull rope (103).

2. The variable-diameter floating photovoltaic device according to claim 1, wherein, A hanging ring (104) or a rope sleeve that slides along the cable (102) is arranged at the end of the pull rope (103).

3. The variable-diameter floating photovoltaic device according to claim 1, wherein, The radial telescopic mechanism (4) includes an outer sleeve (401) and an inner sleeve (402). The inner sleeve (402) is sleeved inside the outer sleeve (401) and slides along the outer sleeve (401). The two ends of the radial telescopic mechanism (4) are respectively hinged to the central floating plate mechanism (2) and the circumferential floating plate mechanism (3).

4. The variable-diameter surface photovoltaic device according to claim 3, wherein Guide wheels (403) are arranged on the outer side of the inner sleeve (402), and the guide wheels (403) slide along the inner wall of the outer sleeve (401).

5. The variable-diameter floating photovoltaic device according to claim 1, wherein, The circumferential telescopic mechanism (304) includes an arc-shaped outer sleeve (3041) and an arc-shaped inner sleeve (3042) sleeved in the arc-shaped outer sleeve (3041). Moving wheels that move along the inner wall of the arc-shaped outer sleeve (3041) are arranged on the outer side of the arc-shaped inner sleeve (3042). The two ends of the circumferential telescopic mechanism (304) are hinged to two adjacent groups of circumferential floating plate blocks (301).

6. The variable-diameter floating photovoltaic device according to claim 1, wherein, The circumferential floating plate mechanism (3) further includes an annular buoy (302). The circumferential floating plate blocks (301) are distributed along the inner side of the annular buoy (302) and are hinged to the annular buoy (302). A compression spring (303) is arranged inside the annular buoy (302).

7. The variable-diameter floating PV device according to claim 1, wherein Each group of the circumferential photovoltaic panel mechanisms (6) is installed across adjacent two groups of circumferential floating plate blocks (301). The circumferential photovoltaic panel mechanism (6) includes several groups of side plate photovoltaic panels (601). The side plate photovoltaic panels (601) are hinged to form a "W" - shaped structure through plate hinges (602) on the upper side between them. The bottoms of the side plate photovoltaic panels (601) at both ends of each group of circumferential photovoltaic panel mechanisms (6) are hinged to the circumferential floating plate blocks (301).

8. The variable-diameter floating photovoltaic device according to claim 7, wherein, Bottom pulleys (603) are arranged on the lower sides of the middle side plate photovoltaic panels (601) of each group of the circumferential photovoltaic panel mechanisms (6) and move along the circumferential floating plate blocks (301).

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