Photovoltaic support system for water surface

Abstract

The invention, which relates to the technical field of fishing light complementation, discloses a photovoltaic support system for a water surface, comprising a supporting mechanism for mounting a photovoltaic panel and a tubular pile in an angle-adjustable manner, and a detection adjusting mechanism for self-adjusting the angle of the photovoltaic panel according to the wind speed and the inclination angle of the tubular pile. When the support is used, the photovoltaic panel and the pipe pile can be connected through the supporting mechanism, the supporting mechanism can be locked through the deflection limiting mechanism, firm installation is guaranteed, and under the action of the detection adjusting mechanism, the photovoltaic panel and the pipe pile can be connected through the deflection limiting mechanism. The inclination angle of the photovoltaic panel can be automatically ensured to be within a range according to the relative angle of the photovoltaic panel and the pipe pile during installation, and then the angle can be automatically changed according to strong wind weather and high temperature weather in the later use process, so that the use and installation firmness of the photovoltaic panel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fish-photovoltaic complementarity, and in particular to a photovoltaic support system for water surfaces. Background Art

[0002] Fishery-solar complementarity is a new model that combines fish farming with photovoltaic power generation. This model mainly involves setting up a photovoltaic panel array above the surface of the fish pond, while the water area below the photovoltaic panel is used for fish and shrimp farming. The photovoltaic array can not only generate electricity, but also provide a good shielding effect for aquaculture, thus forming a new power generation model of "generating electricity above and raising fish below".

[0003] During the installation of photovoltaic panels, they need to be connected to the pipe piles through photovoltaic brackets. However, the installation of photovoltaic panels has high requirements for the verticality and position of the pipe piles. The construction conditions in the water make it more challenging to maintain this accuracy. Whether it is vertical or not also depends on the construction experience of the construction workers. At the same time, due to the different silt conditions at the bottom of the water, the pipe piles after installation are not a vertical body, resulting in a certain deviation between the angle of the photovoltaic panel after installation and the actual required angle. The photovoltaic bracket can facilitate the angle adjustment and self-locking of the photovoltaic panel, so that the photovoltaic panel will not be affected by the pipe piles. The wind on the water surface is usually stronger than the wind on the ground. Due to the difference in friction, the friction on the water surface is smaller than that on the ground. Friction is one of the main reasons for the slowdown of wind speed. Therefore, the wind on the water surface encounters less resistance and the wind speed is usually faster. Water has a large heat capacity and can store a large amount of heat. The heat absorbed by the water surface during the day can be released at night, causing the air temperature gradient near the water surface to increase, thereby strengthening the formation of wind. In order to ensure the irradiation effect, photovoltaic panels are often set at an oblique angle. When the air flow passes through this place, it will exert a greater force on the inclined photovoltaic panels, and the force will also act on the bracket in disguise, causing the optical bracket to bear a greater force. In the process of fish-light complementarity, photovoltaic panels are often used to shade the sky. The temperature is too high in summer. In order to increase the energy of photovoltaic panels, the surface temperature of photovoltaic panels may rise in summer, which will reduce the efficiency of photovoltaic panels. At the same time, the higher temperature will also have an impact on farmed fish. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. An embodiment of the present invention provides a photovoltaic bracket system for water surface to solve the technical problems that the existing photovoltaic panel bracket cannot automatically adjust the tilt angle according to changes in the use environment and does not have automatic calibration.

[0005] The embodiment of the present invention adopts the following technical scheme: a photovoltaic support system for water surface, comprising a support mechanism for installing the photovoltaic panel and the pipe pile with an adjustable angle, a detection and adjustment mechanism for self-adjusting the angle of the photovoltaic panel according to the wind speed and the inclination angle of the pipe pile, and a deflection limit mechanism for cooperating with the detection and adjustment mechanism to change the angle limit, the support mechanism comprising two end brackets for supporting the photovoltaic panel, a support center frame is arranged between the two end brackets, one of the end brackets is connected to the first bracket, a second bracket is arranged on the support center frame, one end of the first bracket is connected to the center bracket, a driving telescopic rod is arranged on the center bracket, and the driving telescopic rod is in contact with the second bracket, the other end of the first bracket end is rotatably connected to the fixed bracket through a rotating rod, and a temperature sensor is arranged on the side wall of the support center frame.

[0006] Furthermore, the second bracket is movably connected to the supporting center frame, and the contact end surfaces of the second bracket and the supporting center frame are arc surfaces. The first bracket is hingedly connected to the end bracket, and a matching through groove is provided in the second bracket.

[0007] Furthermore, the detection and adjustment mechanism reference assembly and the detection assembly, the reference assembly includes a rotating plate, the rotating plate and the second bracket are rotatably connected via a rotating sleeve, a free-fall counterweight block is arranged below the second bracket, and a connecting rope is passed between the counterweight block and the second bracket.

[0008] Furthermore, the detection assembly includes an arc-shaped guide frame, the connecting rod is located in the arc-shaped guide frame, and the arc-shaped guide frame is located on both sides of the second bracket, a first extrusion tube and a second extrusion tube are respectively provided on both sides of the connecting rod, a detection box is provided below the arc-shaped guide frame, a pressure difference detector is provided in the detection box, the detection box is divided into two cavities by the pressure difference detector, each cavity is connected to the corresponding first extrusion tube and second extrusion tube through a connecting tube, a deflection extrusion tube is provided between the rotating plate and the second bracket, and the deflection extrusion tube is connected to the detection box through the connecting rod.

[0009] Furthermore, the cross section of the counterweight block is conical, and the connecting rope connected to the counterweight block is located at the center of the upper end of the rotating block.

[0010] Furthermore, a torsion spring is arranged between the rotating block and the second bracket.

[0011] Furthermore, the deflection limit mechanism includes a limit assembly and a deflection assembly, the limit assembly includes a sleeve column and a connecting column, the connecting column is connected to the center bracket, the end of the sleeve column is T-shaped, a movable groove for moving the sleeve column is provided in the connecting column, and a reset spring is arranged between the sleeve column and the connecting column.

[0012] Furthermore, the deflection assembly includes a third extruded tube and a rotating slot, the third extruded tube is located between the connecting column and the sleeve column, the rotating slot is located on both sides of the rotating rod at the bottom of the second bracket, a card block is arranged in the rotating slot, an expansion limiting telescopic sleeve is arranged between the card block and the fixed frame, and the expansion limiting telescopic sleeve and the third extruded tube are connected by a connecting tube.

[0013] Compared with the prior art, the beneficial effects of the present invention are: Firstly, through the cooperation of the supporting mechanism and the detecting mechanism, during the use of the bracket, at the initial stage of installation (i.e. after the photovoltaic panel and the pipe pile are installed), the reference component therein is used to determine whether there is an angle deviation after installation. If there is an angle deviation, since the pipe pile has been installed, it is difficult to adjust the pipe pile at this time. Therefore, what can be adjusted is the deflection angle of the photovoltaic panel (and during the use of the photovoltaic panel, the photovoltaic panel and the direct angle of the sun are often matched as much as possible, so the photovoltaic panel is basically east-west after installation). When the reference component detects that the deviation angle of the photovoltaic panel is too large, the driving telescopic rod will work, thereby driving the second bracket to move. The movement of the second bracket will change the tilt angle of the photovoltaic panel, thereby ensuring that the photovoltaic panel and the pipe pile can be maintained at a relative angle, thereby ensuring the use of the photovoltaic panel; At the same time, during use, since photovoltaic panels are often set at an angle, when encountering strong winds, the windward surface of the photovoltaic panels set at an angle will be larger. Therefore, the tilt angle of the photovoltaic panels needs to be automatically adjusted to reduce the effect of wind on the photovoltaic panel surface and pipe piles (in order to reduce the windward surface, the tilt angle is converted to an angle parallel to the water surface, thereby reducing the windward area), and this angle of inclination is also suitable for high temperature weather. If the temperature is too high, the sunshade surface of the tilted photovoltaic panels is small. In order to reduce the sun's radiation on the water surface and improve the sunshade effect for fish, it is also necessary to change the angle of the photovoltaic panels to increase the sunshade area. At this time, the work of the driving telescopic rod will also be affected by the surface temperature of the photovoltaic panels. When the photovoltaic panels are in use, if the temperature is too high, the actual energy conversion ratio of the photovoltaic panels will be reduced. Therefore, the temperature needs to be lowered at this time, which can be done by reducing the direct angle of the sun. Secondly, during use, the support mechanism can be locked by the deflection limit mechanism. By detecting the adjustment mechanism, it can be known that the support mechanism will deflect at an angle. At the same time, during the angle deflection, it can be known by the existing photovoltaic panel tilting setting gap (it is best to change the gap between the photovoltaic panels first, and then tilt the angle to ensure that it can tilt). The deflection limit mechanism first makes the support mechanism locked before it deflects. When deflection is required, it first moves horizontally and then deflects at an angle to ensure that it can tilt (when moving horizontally, the relative moving directions can be set oppositely, or the horizontal moving distances between different photovoltaic panels are different, so as to ensure that the gap is increased); To sum up, when the bracket is in use, the photovoltaic panel and the pipe pile can be connected through the supporting mechanism, and the supporting mechanism can be locked by using the deflection limit mechanism to ensure a firm installation. Secondly, under the action of the detection and adjustment mechanism, the inclination angle of the photovoltaic panel can be automatically maintained within a range based on the relative angle with the pipe pile during installation. Secondly, in the later use process, the angle can be automatically changed according to strong winds and high temperature weather, thereby improving the use and firm installation of the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic structural diagram of the support mechanism of the present invention from a first viewing angle; Figure 3 It is a structural schematic diagram of the supporting mechanism of the present invention from a second viewing angle; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the connection structure between the rotating plate and the second bracket of the present invention; Figure 6 It is a schematic diagram of the structure of the deflection limiting mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0016] Reference numerals: 1. Support mechanism; 11. Support center frame; 12. End bracket; 13. First bracket; 14. Second bracket; 15. Driving telescopic rod; 16. Center bracket; 17. Fixed frame; 2. Detection and adjustment mechanism; 21. Counterweight; 22. Rotating plate; 23. Arc guide frame; 24. First extrusion tube; 25. Connecting rod; 26. Second extrusion tube; 27. Detection box; 28. Pressure difference detector; 210. Deflection extrusion tube; 211. Connecting rope; 3. Deflection limiting mechanism; 31. Rotating slot; 32. Expansion limiting telescopic sleeve; 33. Block; 34. Third extrusion tube; 35. Reset spring; 36. Sleeve column; 37. Connecting column. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0019] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Combine the following Figures 1 to 7As shown, an embodiment of the present invention provides a photovoltaic support system for water surface, including a support mechanism 1 for installing the photovoltaic panel and the pipe pile with an adjustable angle, a detection and adjustment mechanism 2 for self-adjusting the angle of the photovoltaic panel according to the wind speed and the inclination angle of the pipe pile, and a deflection limiting mechanism 3 for cooperating with the detection and adjustment mechanism 2 to change the angle limit. The support mechanism 1 includes two end brackets 12 for supporting the photovoltaic panel, a support center frame 11 is arranged between the two end brackets 12, one of the end brackets 12 is connected to the first bracket 13, a second bracket 14 is arranged on the support center frame 11, one end of the first bracket 13 is connected to the center bracket 16, a driving telescopic rod 15 is arranged on the center bracket 16, and the driving telescopic rod 15 is in contact with the second bracket 14, the other end of the first bracket 13 is rotatably connected to the fixed bracket through a rotating rod, and a temperature sensor is arranged on the side wall of the support center frame 11.

[0023] During operation, when the bracket is in use, the photovoltaic panel and the pipe pile can be connected through the support mechanism 1, and the support mechanism 1 can be locked by using the deflection limit mechanism 3 to ensure a firm installation. Secondly, under the action of the detection and adjustment mechanism 2, the inclination angle of the photovoltaic panel can be automatically maintained within a range based on the relative angle with the pipe pile during installation. Secondly, in the later use process, the angle can be automatically changed according to strong winds and high temperature weather, thereby improving the use and firm installation of the photovoltaic panel.

[0024] Specifically, the second bracket 14 is movably connected to the supporting center frame 11, and the contact end surfaces of the second bracket 14 and the supporting center frame 11 are arc surfaces. The first bracket 13 and the end bracket 12 are hingedly connected, and a matching through groove is opened in the second bracket 14.

[0025] During operation, the curved surface ensures that the second bracket 14 can slide smoothly along the supporting center bracket 11, and the first bracket 13 and the end bracket 12 are hinged, so that the supporting center bracket 11 can be tilted at a variable angle.

[0026] Specifically, the detection and adjustment mechanism 2 includes a reference component and a detection component, wherein the reference component includes a rotating plate 22, and the rotating plate 22 is rotatably connected to the second bracket 14 via a rotating sleeve. A free-fall counterweight block 21 is provided below the second bracket 14, and a connecting rope 211 is passed between the counterweight block 21 and the second bracket 14.

[0027] During operation, since the counterweight 21 is a free-falling body and is cone-shaped, the counterweight 21 will be vertically downward due to the influence of the center of gravity. At this time, the counterweight 21 is at a vertical angle, and the length of the connecting rope 211 is fixed. At this time, the rotating plate 22 is also vertically downward due to the influence of the counterweight 21, and the angle of the second bracket 14 will change with the installation angle of the photovoltaic panel. Therefore, if the angle between the second bracket 14 and the rotating plate 22 changes, it means that the photovoltaic panel is tilted.

[0028] Specifically, the detection assembly includes an arc-shaped guide frame 23, the pair of connecting rods 25 are located in the arc-shaped guide frame 23, and the arc-shaped guide frame 23 is located on both sides of the second bracket 14, and the first extrusion tube 24 and the second extrusion tube 26 are respectively arranged on both sides of the connecting rod 25, and a detection box 27 is arranged below the arc-shaped guide frame 23, and a pressure difference detector 28 is arranged in the detection box 27, and the detection box 27 is divided into two cavities by the pressure difference detector 28, and each cavity is connected to the corresponding first extrusion tube 24 and second extrusion tube 26 through a connecting tube, and a deflection extrusion tube 210 is arranged between the rotating plate 22 and the second bracket 14, and the deflection extrusion tube 210 is connected to the detection box 27 through the connecting rod 25.

[0029] Specifically, the cross section of the counterweight block 21 is conical, and the connecting rope 211 connected to the counterweight block 21 is located at the center of the upper end of the rotating block.

[0030] Specifically, a torsion spring is provided between the rotating block and the second bracket 14 .

[0031] When working, there is a certain resistance to the rotation of the rotating block, which means that the rotating block will rotate only when the wind reaches a certain level, and it will reset when there is no wind.

[0032] Specifically, the deflection limit mechanism 3 includes a limit assembly and a deflection assembly. The limit assembly includes a sleeve column 36 and a connecting column 37. The connecting column 37 is connected to the center bracket 16. The end of the sleeve column 36 is T-shaped. A movable groove for moving the sleeve column 36 is provided in the connecting column 37. A reset spring 35 is provided between the sleeve column 36 and the connecting column 37.

[0033] Specifically, the deflection assembly includes a third extrusion tube 34 and a rotation slot 31, the third extrusion tube 34 is located between the connecting column 37 and the sleeve column 36, the rotation slot 31 is located on both sides of the rotation rod at the bottom of the second bracket 14, a block 33 is arranged in the rotation slot 31, an expansion limit telescopic sleeve 32 is arranged between the block 33 and the fixed frame 17, the expansion limit telescopic sleeve 32 and the third extrusion tube 34 are connected by a connecting tube, and the block 33 will not rotate under the influence of the expansion limit telescopic sleeve 32, but will only telescope.

[0034] Working principle: Before use, first connect the end bracket 12 to the photovoltaic panel, and then connect the center bracket 16 to the pipe pile. After the initial installation, the second bracket 14 is tilted and the tilt angle of the supporting center bracket 11 is constant, that is, the angle of the photovoltaic panel and the pipe pile after installation is constant, and the angle of the photovoltaic panel is affected by the pipe pile. If the pipe pile is tilted, since the counterweight block 21 is a free fall body and the counterweight block 21 is conical, the counterweight block 21 will be vertically downward due to the influence of the center of gravity. At this time, the counterweight block 21 is at a vertical angle, and the length of the connecting rope 211 is fixed. At this time, the rotating plate 22 is also vertically downward due to the influence of the counterweight block 21, and the angle of the second bracket 14 will change with the installation angle of the photovoltaic panel. For this reason, if the angle between the second bracket 14 and the rotating plate 22 changes, it means that the photovoltaic panel is tilted. When the tilt phenomenon occurs, the arc guide frame 23 is to move synchronously with the second bracket 14 (for example, when tilting to the left, the arc-shaped guide frame 23 also moves synchronously to the left, causing the connecting rod 25 connected to the rotating plate 22 to squeeze the first squeezing tube 24, and squeeze the internal liquid into the detection box 27 through the connection). At this time, the pressure difference detector 28 in the detection box 27 detects the pressure change on one side and sends a signal to the controller. The controller sends a signal to drive the telescopic rod 15 to work. At this time, the telescopic rod 15 is driven to work, so that the second bracket 14 is driven to deflect. The deflection of the second bracket 14 changes the position of the connection point between the second bracket 14 and the supporting center frame 11, and finally the photovoltaic panel moves in the opposite direction of the tilt, avoiding the installation tilt affecting the use of the photovoltaic panel. This position point is the basic position point, and a limit block is set in its position. In the subsequent adjustment process, it is only necessary to reduce the tilt angle of the photovoltaic panel; In the subsequent use, if strong winds are encountered, in order to avoid the influence of wind on the photovoltaic panel (as shown in the figure, the wind from left to right has the greatest influence on the photovoltaic panel. At this time, the photovoltaic panel is on the leeward side. If it is from right to left, the photovoltaic panel is on the windward side, and the windward side is an inclined surface, the force of wind on the photovoltaic panel is relatively low), the photovoltaic panel needs to adjust the inclination angle. During use, the wind will blow the rotating plate 22 which is always vertical, causing the rotating plate 22 to deflect. If the deflection angle is too large (indicating that the wind is too strong and has overcome the force of the torsion spring and the counterweight 21, and its angle needs to be adjusted), it will squeeze the deflection extrusion tube 210 set between the rotating plate 22 and the second bracket 14. At this time, the liquid in the deflection extrusion tube 210 enters the detection box 27, driving the telescopic rod 15 to start working. Before working, due to the presence of the deflection limiting mechanism 3, the block 33 is stuck in the rotating slot 31, and the second bracket 14 cannot rotate. For this reason, the drive The operation of the telescopic rod 15 will first move the sleeve column 36 in the fixed frame 17 inward by a certain distance, so that a gap will appear between adjacent photovoltaic panel bracket systems to ensure that deflection can be performed. During the movement, the third extrusion tube 34 squeezes the internal liquid into the expansion limit telescopic sleeve 32 to drive the block 33 to move. At this time, the block 33 is disengaged from the rotating slot 31. At this time, the opposite movement of the driving telescopic rod 15 will drive the second bracket 14 to deflect, thereby reducing the inclination angle of the photovoltaic panel. When there is no wind, the rotating plate 22 is reset, the liquid in the pipeline is reset, and the differential pressure detector 28 detects that the driving telescopic rod 15 is reset. When resetting, the inclination angle of the photovoltaic panel is first restored to the initial angle. Due to the influence of the limit block, the driving telescopic rod 15 works to move the photovoltaic panel horizontally, thereby completely resetting. Similarly, when the temperature is too high, a signal is transmitted to the controller through the temperature sensor, and then the driving telescopic rod 15 is driven to work.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic support system for water surface, characterized in that; The invention comprises a support mechanism (1) for installing a photovoltaic panel and a pipe pile so that the angle between the photovoltaic panel and the pipe pile can be adjusted, a detection and adjustment mechanism (2) for self-adjusting the angle of the photovoltaic panel according to the wind speed and the inclination angle of the pipe pile, and a deflection limit mechanism (3) for cooperating with the detection and adjustment mechanism (2) to change the angle limit. The support mechanism (1) comprises two end brackets (12) for supporting the photovoltaic panel, a support center frame (11) is arranged between the two end brackets (12), one of the end brackets (12) is connected to a first bracket (13), a second bracket (14) is arranged on the support center frame (11), one end of the first bracket (13) is connected to a center bracket (16), a driving telescopic rod (15) is arranged on the center bracket (16), and the driving telescopic rod (15) is in contact with the second bracket (14), the other end of the end of the first bracket (13) is rotatably connected to a fixed bracket via a rotating rod, and a temperature sensor is arranged on the side wall of the support center frame (11).

2. A photovoltaic support system for water surface according to claim 1, characterized in that; The second bracket (14) is movably connected to the supporting center bracket (11), and the contact end surfaces of the second bracket (14) and the supporting center bracket (11) are arc surfaces. The first bracket (13) and the end bracket (12) are hingedly connected, and a matching through groove is provided in the second bracket (14).

3. A photovoltaic support system for water surface according to claim 1, characterized in that; The detection and adjustment mechanism (2) comprises a reference assembly and a detection assembly, wherein the reference assembly comprises a rotating plate (22), wherein the rotating plate (22) and the second bracket (14) are rotatably connected via a rotating sleeve, a free-falling counterweight (21) is provided below the second bracket (14), a connecting rope (211) is provided between the counterweight (21) and the second bracket (14), and a connecting rod (25) is provided outside the rotating plate (22).

4. A photovoltaic support system for water surface according to claim 3, characterized in that; The detection assembly comprises an arc-shaped guide frame (23), the connecting rod (25) is located in the arc-shaped guide frame (23), and the arc-shaped guide frame (23) is located on both sides of the second bracket (14), a first extrusion tube (24) and a second extrusion tube (26) are respectively arranged on both sides of the connecting rod (25), a detection box (27) is arranged below the arc-shaped guide frame (23), a pressure difference detector (28) is arranged in the detection box (27), the detection box (27) is divided into two cavities by the pressure difference detector (28), each cavity is connected to the corresponding first extrusion tube (24) and second extrusion tube (26) by a connecting tube, a deflection extrusion tube (210) is arranged between the rotating plate (22) and the second bracket (14), and the deflection extrusion tube (210) is connected to the detection box (27) by the connecting rod (25).

5. A photovoltaic support system for water surface according to claim 4, characterized in that; The cross section of the counterweight block (21) is conical, and a connecting rope (211) connected to the counterweight block (21) is located at the center of the upper end of the rotating block.

6. A photovoltaic support system for water surface according to claim 4, characterized in that; A torsion spring is provided between the rotating block and the second bracket (14).

7. A photovoltaic support system for water surface according to claim 1, characterized in that; The deflection limiting mechanism (3) comprises a limiting assembly and a deflection assembly, the limiting assembly comprising a sleeve column (36) and a connecting column (37), the connecting column (37) being connected to the central support (16), the end of the sleeve column (36) being T-shaped, a movable groove for enabling the sleeve column (36) to move is provided in the connecting column (37), and a return spring (35) is provided between the sleeve column (36) and the connecting column (37).

8. A photovoltaic support system for water surface according to claim 7, characterized in that; The deflection assembly comprises a third extruded tube (34) and a rotation slot (31); the third extruded tube (34) is located between a connecting column (37) and a sleeve column (36); the rotation slot (31) is located on both sides of a rotation rod at the bottom of the second bracket (14); a clamping block (33) is provided in the rotation slot (31); an expansion limiting telescopic sleeve (32) is provided between the clamping block (33) and the fixing frame (17); and the expansion limiting telescopic sleeve (32) and the third extruded tube (34) are connected via a connecting tube.

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