Height-adjustable offshore flexible photovoltaic device

Abstract

The invention relates to a height-adjustable offshore flexible photovoltaic device, and belongs to the technical field of photovoltaic panel supports, the height-adjustable offshore flexible photovoltaic device comprises a base and a mounting rack, the mounting rack is located above the base, the mounting rack is connected with the base, the base comprises a first buoyancy tank and a plurality of second buoyancy tanks, the plurality of second buoyancy tanks are circumferentially distributed on the outer side of the first buoyancy tank, and the first buoyancy tank is connected with the second buoyancy tanks. A lifting platform is arranged above the first buoyancy tank, the mounting frame is connected with the top of the lifting platform, a lifting system and a plurality of transmission systems are arranged in the first buoyancy tank, the lifting system is used for driving the lifting platform to ascend and descend, and the transmission systems are connected with the second buoyancy tanks in a one-to-one correspondence mode. The lifting platform lifts to drive the photovoltaic panel to lift, the height of the photovoltaic panel is adjusted, the situation that seawater makes contact with the photovoltaic panel, so that impurities in the seawater stay on the surface of the photovoltaic panel is avoided, and when the photovoltaic panel floats up and down due to waves, flexible buffering is achieved through the elastic effect of the springs.

Description

Technical Field

[0001] The invention relates to a height-adjustable offshore flexible photovoltaic device, belonging to the technical field of photovoltaic panel brackets. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. The key component of this technology is the solar cell. After being connected in series and packaged for protection, the solar cells can form a large-area solar cell module, which is then combined with components such as a power controller to form a photovoltaic power generation device. Currently, there are large areas at sea where photovoltaic panels can be installed.

[0003] The utility model patent with the announcement number CN220629233U discloses an offshore photovoltaic panel support, including a floating body, a fixing plate fixed on the upper surface of the floating body, a fixing groove opened on the upper surface of the fixing plate, an adjusting mechanism for adjusting the angle of the photovoltaic panel support, an anti-collision mechanism for increasing the anti-collision performance of the photovoltaic panel support is arranged around the fixing plate, and the adjusting mechanism includes an electric push rod fixed to the bottom wall of the inner cavity of the fixing groove, a first connecting rod is fixed on the outer side of the output shaft of the electric push rod, and a fixing ring is fixed on the lower surface of the connecting plate. The offshore photovoltaic panel support, the adjusting mechanism can adjust the illumination angle of the light panel, the first connecting rod is moved up and down through the output shaft of the electric push rod, and then the mounting plate is driven to rotate up and down, and then the mounting plate drives the photovoltaic panel to adjust the illumination angle, and at the same time has a night warning performance to prevent passing ships from hitting the photovoltaic panel support. However, in the prior art, when the waves at sea are large, the sea is easy to contact with the photovoltaic panel, causing impurities in the seawater to stay on the surface of the photovoltaic panel, thereby affecting the power generation efficiency of the photovoltaic panel.

[0004] Therefore, there is a need for a highly adjustable offshore flexible photovoltaic device to prevent seawater from contacting the photovoltaic panels. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to provide a height-adjustable offshore flexible photovoltaic device in order to overcome the deficiencies of the prior art.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: a height-adjustable offshore flexible photovoltaic device, comprising a base and a mounting frame, the mounting frame is located above the base, the mounting frame is connected to the base, the base comprises a first pontoon and a plurality of second pontoons, the plurality of second pontoons are circumferentially distributed on the outside of the first pontoon, a lifting platform is arranged above the first pontoon, the mounting frame is connected to the top of the lifting platform, a lifting system and a plurality of transmission systems are arranged in the first pontoon, the lifting system is used to drive the lifting platform to rise and fall, the plurality of transmission systems are connected to the plurality of second pontoons in a one-to-one correspondence, and the lifting of the lifting platform controls the second pontoons to move toward or away from the first pontoon through the transmission system; The mounting frame is arranged to be tilted left and right, the left side of the mounting frame is higher than the right side of the mounting frame, the right side of the mounting frame is rotatably connected to the lifting platform through a rotating shaft, a plurality of support systems are arranged between the mounting frame and the lifting platform, the plurality of support systems are arranged in the front-to-back direction, the support system is located on the left side of the rotating shaft, and the mounting frame is connected to the lifting platform through the support system; The support system includes a rotating tube and a connecting rod. The rotating tube is arranged tilted, the connecting rod is arranged coaxially with the rotating tube, one end of the rotating tube is hinged to the lifting platform, one end of the connecting rod is inserted into the other end of the rotating tube, and the other end of the connecting rod is hinged to the mounting frame. A spring is arranged in the rotating tube, and the two ends of the spring are respectively connected to the connecting rod and the rotating tube.

[0007] Preferably, a through hole is provided on the top of the first buoyancy tank; The lifting system is a cylinder, the cylinder body of the cylinder is fixedly arranged at the bottom of the first floating box, and the piston end of the cylinder passes through a through hole and is fixedly arranged on the lifting platform.

[0008] Preferably, the transmission system includes a connecting rod and a push rod, the push rod passes through the first pontoon, one end of the push rod is fixedly arranged on the second pontoon, the other end of the push rod is hinged to the lifting platform through the connecting rod, the connecting rod is arranged at an angle, the push rod is slidably and sealedly connected to the first pontoon, and the connecting rod passes through a through hole.

[0009] Preferably, a cleaning tube is fixedly provided on the mounting frame, both ends of the cleaning tube are sealed, an air outlet is provided on the cleaning tube, a plurality of transmission tubes are provided on the cleaning tube, the plurality of transmission tubes correspond one to one with a plurality of support systems, the cleaning tube is connected with the rotating tube through the transmission tube, one end of the rotating tube connected to the lifting platform is sealed, and the connecting rod is slidably and sealingly connected with the rotating tube.

[0010] Preferably, a telescopic tube is provided between the lifting platform and the first buoyancy box, two ends of the telescopic tube are respectively sealed and fixedly connected to the lifting platform and the first buoyancy box, and the through holes and the telescopic tube are distributed from inside to outside.

[0011] Preferably, two adjacent transmission pipes are connected through an air pipe, and the lifting platform is provided with mounting holes, the mounting holes correspond one to one with the air pipes, and the air pipe is provided with a branch pipe, one end of the branch pipe is connected with the air pipe, and the other end of the branch pipe is inserted into the mounting hole.

[0012] Preferably, a sealing system is provided on the lifting platform, the sealing system corresponds to the mounting holes one by one, and the sealing system is used to achieve sealing of the mounting holes.

[0013] Preferably, the sealing system comprises a sealing disk, the sealing disk is sealingly fitted with the bottom of the lifting platform, the sealing disk is driven by a motor, and a notch is arranged on the sealing disk.

[0014] Preferably, a plurality of air outlet holes are provided, and the plurality of air outlet holes are distributed along the length direction of the cleaning tube.

[0015] Preferably, the specific number of the second pontoons is four, and the four second pontoons are respectively located on the front, back, left, and right sides of the first pontoon.

[0016] Compared with the prior art, the advantages of the present invention are: The present invention provides a height-adjustable offshore flexible photovoltaic device, which drives the photovoltaic panel to rise and fall by the lifting of a lifting platform, thereby adjusting the height of the photovoltaic panel, avoiding contact between seawater and the photovoltaic panel so that impurities in the seawater remain on the surface of the photovoltaic panel. Moreover, when the photovoltaic panel floats up and down due to waves, flexible buffering is achieved through the elastic action of the spring, thereby reducing the inertial impact on the photovoltaic panel, playing a role in protecting the photovoltaic panel, thereby extending the service life of the photovoltaic panel. Secondly, through the relative movement between the connecting rod and the rotating tube and the lifting of the lifting platform, the air is transported to the cleaning pipe and then discharged from the air outlet and acts on the photovoltaic panel, thereby cleaning the photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A first stereoscopic diagram of a height-adjustable offshore flexible photovoltaic device according to the present invention; Figure 2 A second stereoscopic view of a height-adjustable offshore flexible photovoltaic device according to the present invention; Figure 3 This is a front view of a height-adjustable offshore flexible photovoltaic device according to the present invention; Figure 4 It is a right side view of a height-adjustable offshore flexible photovoltaic device of the present invention; Figure 5 A top view of a height-adjustable offshore flexible photovoltaic device according to the present invention; Figure 6 A three-dimensional diagram of the base; Figure 7 is a cross-sectional view of the base; Figure 8 This is a bottom view of the base; Fig. 9 It is a schematic diagram of the connection structure between the mounting frame and the lifting platform; Fig.10 It is a schematic diagram of the structure of the cleaning tube; Fig.11 A three-dimensional diagram of the support system; Fig.12 It is a cross-sectional view of the support system; Fig.13 It is a structural diagram of the sealing system.

[0018] Among them: base 1, mounting frame 2, photovoltaic panel 3, first pontoon 4, second pontoon 5, lifting platform 6, through hole 7, cylinder 8, connecting rod 9, push rod 10, rotating shaft 11, rotating tube 12, connecting rod 13, spring 14, cleaning tube 15, air outlet 16, transmission tube 17, telescopic tube 18, air pipe 19, mounting hole 20, branch pipe 21, sealing disk 22, motor 23, and notch 24. DETAILED DESCRIPTION

[0019] like Figure 1-13 As shown, a height-adjustable offshore flexible photovoltaic device in this embodiment includes a base 1 and a mounting frame 2, wherein the mounting frame 2 is located above the base 1, the mounting frame 2 is connected to the base 1, and the mounting frame 2 is used to install a photovoltaic panel 3; The base 1 includes a first pontoon 4 and a plurality of second pontoons 5, the plurality of second pontoons 5 are circumferentially distributed on the outside of the first pontoon 4, the specific number of the second pontoons 5 is four, and the four second pontoons 5 are respectively located on the front, back, left and right sides of the first pontoon 4, a lifting platform 6 is arranged above the first pontoon 4, the mounting frame 2 is connected to the top of the lifting platform 6, a lifting system and a plurality of transmission systems are arranged in the first pontoon 4, the lifting system is used to drive the lifting platform 6 to rise and fall, the plurality of transmission systems are connected to the plurality of second pontoons 5 in a one-to-one correspondence, and the lifting of the lifting platform 6 controls the second pontoons 5 to move toward or away from the first pontoon 4 through the transmission system; During operation, the first pontoon 4 and the second pontoon 5 float on the water surface. At the same time, the photovoltaic panel 3 absorbs light to generate photovoltaic power. When the waves are large, the lifting platform 6 is raised by the lifting system to increase the height of the photovoltaic panel 3, so as to avoid the contact between the seawater and the photovoltaic panel 3 so that the impurities in the seawater remain on the surface of the photovoltaic panel 3, thereby affecting the power generation efficiency of the photovoltaic panel 3. At the same time, the rise of the lifting platform 6 causes the second pontoon 5 to move away from the first pontoon 4 through the transmission system, so as to improve the overall support effect of the base 1. Because the waves will cause the photovoltaic panel 3 to shake, the shaking of the photovoltaic panel 3 is prevented from being aggravated after the photovoltaic panel 3 is raised; When the waves decrease, the lifting platform 6 is lowered by the lifting system to achieve reset. The reset of the lifting platform 6 drives the second pontoon 5 to reset and abut against the first pontoon 4 through the transmission system. In this way, the overall occupied space of the device is reduced. Since the device is mostly used in multiples, by reducing the occupied space, it is convenient for the staff to move between two adjacent devices. The top of the first buoyancy box 4 is provided with a through hole 7; The lifting system is a cylinder 8, the cylinder body of the cylinder 8 is fixedly arranged at the bottom of the first buoyancy box 4, the piston end of the cylinder 8 passes through the through hole 7 and is fixedly arranged on the lifting platform 6. When the cylinder 8 is started, the piston end of the cylinder 8 drives the lifting platform 6 to rise and fall; The transmission system includes a connecting rod 9 and a push rod 10, wherein the push rod 10 passes through the first pontoon 4, one end of the push rod 10 is fixedly arranged on the second pontoon 5, and the other end of the push rod 10 is hinged to the lifting platform 6 through the connecting rod 9, the connecting rod 9 is arranged obliquely, and the push rod 10 is slidably and sealedly connected to the first pontoon 4, and the connecting rod 9 passes through the through hole 7. During the rising of the lifting platform 6, the push rod 10 is driven to move by the connecting rod 9, and the movement of the push rod 10 drives the second pontoon 5 to move in the direction away from the first pontoon 4. When the lifting platform 6 descends, the push rod 10 is driven to move in the opposite direction by the connecting rod 9, and the reverse movement of the push rod 10 drives the second pontoon 5 to move in the opposite direction; The mounting frame 2 is arranged tilted left and right, the left side of the mounting frame 2 is higher than the right side of the mounting frame 2, the right side of the mounting frame 2 is rotatably connected to the lifting platform 6 through the rotating shaft 11, the upper surface of the mounting frame 2 is used to fix and install the photovoltaic panel 3, a plurality of support systems are arranged between the mounting frame 2 and the lifting platform 6, the plurality of support systems are arranged in the front-to-back direction, the specific number of the support systems is two, the support system is located on the left side of the rotating shaft 11, and the mounting frame 2 is connected to the lifting platform 6 through the support system; The support system includes a rotating tube 12 and a connecting rod 13. The rotating tube 12 is arranged obliquely, and the connecting rod 13 is arranged coaxially with the rotating tube 12. One end of the rotating tube 12 is hinged to the lifting platform 6, and one end of the connecting rod 13 is inserted into the other end of the rotating tube 12. The other end of the connecting rod 13 is hinged to the mounting frame 2. A spring 14 is arranged in the rotating tube 12, and the two ends of the spring 14 are respectively connected to the connecting rod 13 and the rotating tube 12; When waves are generated on the sea surface, the mounting frame 2 will be lifted and lowered back and forth, and the photovoltaic panel 3 will be lifted and lowered, so that the photovoltaic panel 3 will be subjected to inertial impact. When the lifting platform 6 rises or falls with the waves, the distance between the left side of the mounting frame 2 and the lifting platform 6 is reduced or increased by inertia, and the mounting frame 2 rotates around the axis of the rotating shaft 11. At the same time, the depth of the connecting rod 13 inserted into the rotating tube 12 increases or decreases, and the spring 14 is deformed. Through the elastic action of the spring 14, the photovoltaic panel 3 is subjected to flexible buffering, thereby reducing the inertial impact on the photovoltaic panel 3, protecting the photovoltaic panel 3, and thus extending the service life of the photovoltaic panel 3; A cleaning pipe 15 is fixedly provided on the upper surface of the mounting frame 2, and both ends of the cleaning pipe 15 are sealed. An air outlet 16 is provided on the cleaning pipe 15, and a plurality of the air outlets 16 are provided, and the plurality of air outlets 16 are distributed along the length direction of the cleaning pipe 15. A plurality of transmission pipes 17 are provided on the cleaning pipe 15, and the plurality of transmission pipes 17 correspond to a plurality of support systems one by one. The cleaning pipe 15 is connected to the rotating pipe 12 through the transmission pipe 17, and one end of the rotating pipe 12 connected to the lifting platform 6 is sealed, and the connecting rod 13 is slidably and sealedly connected to the rotating pipe 12; When the distance that the connecting rod 13 is inserted into the rotating tube 12 increases, the air in the rotating tube 12 is squeezed and transported from the transmission tube 17 to the cleaning tube 15. The air in the cleaning tube 15 is discharged from the air outlet 16 and acts on the photovoltaic panel 3. Under the action of the airflow, impurities on the photovoltaic panel 3 are blown away, thereby cleaning the photovoltaic panel 3 and preventing impurities from affecting the power generation efficiency of the photovoltaic panel 3. A telescopic tube 18 is provided between the lifting platform 6 and the first pontoon 4. The two ends of the telescopic tube 18 are sealed and fixedly connected to the lifting platform 6 and the first pontoon 4 respectively. The through hole 7 and the telescopic tube 18 are distributed from the inside to the outside. The telescopic tube 18 can prevent impurities from entering the first pontoon 4 from the through hole 7. Two adjacent transmission pipes 17 are connected through an air pipe 19. The lifting platform 6 is provided with a mounting hole 20, and the mounting hole 20 corresponds to the air pipe 19 one by one. The air pipe 19 is provided with a branch pipe 21, one end of the branch pipe 21 is connected to the air pipe 19, and the other end of the branch pipe 21 is inserted into the mounting hole 20. When the lifting platform 6 descends, the air in the telescopic pipe 18 is compressed and transported to the cleaning pipe 15 from the mounting hole 20, the branch pipe 21, the air pipe 19 and the transmission pipe 17 in sequence, so that the air outlet 16 is exhausted to clean the photovoltaic panel 3; The lifting platform 6 is provided with a sealing system, the sealing system corresponds to the mounting hole 20 one by one, and the sealing system is used to achieve sealing of the mounting hole 20; The sealing system includes a sealing disk 22, which is sealed and fitted with the bottom of the lifting platform 6. The sealing disk 22 is driven by a motor 23. A notch 24 is provided on the sealing disk 22. When the lifting platform 6 needs to be lifted, the sealing disk 22 is rotated by the motor 23, so that the notch 24 on the sealing disk 22 is rotated to the direction of the mounting hole 20, so that the telescopic tube 18 can be connected with the mounting hole 20. When the lifting platform 6 stops lifting, the notch 24 on the sealing disk 22 is driven by the motor 23 to move away from the mounting hole 20, and the sealing disk 22 seals the mounting hole 20, so as to prevent the air in the rotating tube 12 from being transported from the transmission tube 17, the air pipe 19, the branch pipe 21 and the mounting hole 20 to the telescopic tube 18 when the distance of the connecting rod 13 inserted into the rotating tube 12 increases, thereby affecting the reliability of exhaust of the air outlet 16; Working principle: The photovoltaic panel 3 is fixedly mounted on the upper surface of the mounting frame 2, and floats on the water surface through the first pontoon 4 and the second pontoon 5. At the same time, the photovoltaic panel 3 absorbs light to generate photovoltaic power; When the waves are large, the lifting platform 6 rises, thereby raising the height of the photovoltaic panel 3, avoiding the contact between the seawater and the photovoltaic panel 3 so that the impurities in the seawater remain on the surface of the photovoltaic panel 3. At the same time, the second buoyancy box 5 moves away from the first buoyancy box 4, so as to improve the overall support effect of the base 1; When the waves decrease, the lifting platform 6 is lowered to achieve reset, and the second buoyancy box 5 is reset and abuts against the first buoyancy box 4, reducing the occupied space of the entire device; In addition, when waves are generated on the sea surface, the mounting frame 2 is lifted and lowered reciprocatingly, and the mounting frame 2 is rotated around the axis of the rotating shaft 11. At the same time, the depth of the connecting rod 13 inserted into the rotating tube 12 increases or decreases, and the spring 14 is deformed. Through the elastic action of the spring 14, the photovoltaic panel 3 generates a flexible buffer; Secondly, when the distance that the connecting rod 13 is inserted into the rotating tube 12 increases, the air in the rotating tube 12 is transported to the cleaning tube 15 and then discharged from the air outlet 16 and acts on the photovoltaic panel 3. Under the action of the airflow, the impurities on the photovoltaic panel 3 are blown away, so that the photovoltaic panel 3 is cleaned and the impurities are prevented from affecting the power generation efficiency of the photovoltaic panel 3. Moreover, when the lifting platform 6 descends, the air in the telescopic tube 18 is transported to the cleaning tube 15 and then discharged from the air outlet 16 and acts on the photovoltaic panel 3, so that the photovoltaic panel 3 is cleaned again. To summarize, the lifting and lowering of the lifting platform 6 drives the lifting and lowering of the photovoltaic panel 3 to achieve the adjustment of the height of the photovoltaic panel 3, avoid the contact between the seawater and the photovoltaic panel 3 so that the impurities in the seawater remain on the surface of the photovoltaic panel 3, and when the photovoltaic panel 3 floats up and down due to the waves, the elastic action of the spring 14 can achieve flexible buffering, thereby reducing the inertial impact on the photovoltaic panel 3, thereby protecting the photovoltaic panel 3 and extending the service life of the photovoltaic panel 3. Secondly, through the relative movement between the connecting rod 13 and the rotating tube 12 and the lifting and lowering of the lifting platform 6, the air is transported to the cleaning tube 15 and then discharged from the air outlet 16 and acts on the photovoltaic panel 3, so as to achieve the cleaning of the photovoltaic panel 3.

[0020] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A height-adjustable offshore flexible photovoltaic device, comprising a base (1) and a mounting frame (2), wherein the mounting frame (2) is located above the base (1), and the mounting frame (2) is connected to the base (1), characterized in that: The base (1) comprises a first pontoon (4) and a plurality of second pontoons (5), the plurality of second pontoons (5) being circumferentially distributed on the outside of the first pontoon (4), a lifting platform (6) being arranged above the first pontoon (4), the mounting frame (2) being connected to the top of the lifting platform (6), a lifting system and a plurality of transmission systems being arranged inside the first pontoon (4), the lifting system being used to drive the lifting platform (6) to move up and down, the plurality of transmission systems being connected to the plurality of second pontoons (5) in a one-to-one correspondence, and the lifting of the lifting platform (6) being controlled by the transmission system to move the second pontoons (5) towards or away from the first pontoon (4); The mounting frame (2) is arranged to be tilted left and right, the left side of the mounting frame (2) is higher than the right side of the mounting frame (2), the right side of the mounting frame (2) is rotatably connected to the lifting platform (6) via a rotating shaft (11), a plurality of support systems are arranged between the mounting frame (2) and the lifting platform (6), the plurality of support systems are arranged in a front-to-back direction, the support system is located on the left side of the rotating shaft (11), and the mounting frame (2) is connected to the lifting platform (6) via the support system; The support system comprises a rotating tube (12) and a connecting rod (13); the rotating tube (12) is arranged tilted; the connecting rod (13) and the rotating tube (12) are arranged coaxially; one end of the rotating tube (12) is hinged to the lifting platform (6); one end of the connecting rod (13) is inserted into the other end of the rotating tube (12); the other end of the connecting rod (13) is hinged to the mounting frame (2); a spring (14) is arranged in the rotating tube (12); two ends of the spring (14) are respectively connected to the connecting rod (13) and the rotating tube (12).

2. A highly adjustable offshore flexible photovoltaic device according to claim 1, characterized in that: A through hole (7) is provided on the top of the first buoyancy box (4); The lifting system is a cylinder (8), the cylinder body of the cylinder (8) is fixedly arranged at the bottom of the first floating box (4), and the piston end of the cylinder (8) passes through the through hole (7) and is fixedly arranged on the lifting platform (6).

3. The height-adjustable offshore flexible photovoltaic device according to claim 2, characterized in that: The transmission system comprises a connecting rod (9) and a push rod (10), wherein the push rod (10) passes through the first pontoon (4), one end of the push rod (10) is fixedly arranged on the second pontoon (5), and the other end of the push rod (10) is hinged to the lifting platform (6) through the connecting rod (9), the connecting rod (9) is arranged tilted, the push rod (10) is slidably and sealedly connected to the first pontoon (4), and the connecting rod (9) passes through the through hole (7).

4. The height-adjustable offshore flexible photovoltaic device according to claim 1, characterized in that: A cleaning tube (15) is fixedly arranged on the mounting frame (2), both ends of the cleaning tube (15) are sealed, an air outlet (16) is arranged on the cleaning tube (15), a plurality of transmission tubes (17) are arranged on the cleaning tube (15), the plurality of transmission tubes (17) correspond one to one with the plurality of support systems, the cleaning tube (15) is connected to the rotating tube (12) through the transmission tube (17), one end of the rotating tube (12) connected to the lifting platform (6) is sealed, and the connecting rod (13) is slidably and sealedly connected to the rotating tube (12).

5. The height-adjustable offshore flexible photovoltaic device according to claim 4, characterized in that: A telescopic tube (18) is provided between the lifting platform (6) and the first buoyancy box (4), and both ends of the telescopic tube (18) are respectively sealed and fixedly connected to the lifting platform (6) and the first buoyancy box (4), and the through holes (7) and the telescopic tube (18) are distributed from the inside to the outside.

6. The height-adjustable offshore flexible photovoltaic device according to claim 5, characterized in that: Two adjacent transmission pipes (17) are connected via an air pipe (19); a mounting hole (20) is provided on the lifting platform (6); the mounting hole (20) corresponds to the air pipe (19) one-to-one; a branch pipe (21) is provided on the air pipe (19); one end of the branch pipe (21) is connected to the air pipe (19); and the other end of the branch pipe (21) is inserted into the mounting hole (20).

7. The height-adjustable offshore flexible photovoltaic device according to claim 6, characterized in that: The lifting platform (6) is provided with a sealing system, the sealing system corresponding to the mounting hole (20) one by one, and the sealing system is used to achieve sealing of the mounting hole (20).

8. The height-adjustable offshore flexible photovoltaic device according to claim 7, characterized in that: The sealing system comprises a sealing disc (22), the sealing disc (22) being sealingly fitted to the bottom of the lifting platform (6), the sealing disc (22) being driven by a motor (23), and a notch (24) being provided on the sealing disc (22).

9. The height-adjustable offshore flexible photovoltaic device according to claim 4, characterized in that: A plurality of air outlet holes (16) are provided, and the plurality of air outlet holes (16) are distributed along the length direction of the cleaning tube (15).

10. The height-adjustable offshore flexible photovoltaic device according to claim 1, characterized in that: The specific number of the second pontoons (5) is four, and the four second pontoons (5) are respectively located on the front, back, left, and right sides of the first pontoon (4).

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