A tidal energy power generation device for a ship

Abstract

The application discloses a tidal energy power generation device for a ship and relates to the technical field of tidal power generation, which comprises a fixed plate, a limiting support unit capable of adaptively adjusting the angle of the equipment is arranged on the side of the fixed plate, and a bidirectional power generation unit capable of adjusting the blade curvature along the liquid flow direction is arranged on the side of the limiting support unit. The limiting support unit comprises a base plate fixedly installed on the side of the fixed plate and a side plate arranged on the side of the base plate and used for limiting the movement track of the bidirectional power generation unit; the bidirectional power generation unit can swing adaptively along with the fluctuation of seawater, the paddle is ensured to be parallel to the liquid surface, the rotating shaft rotates on the back of the connecting block at this time, the limiting slide rod slides in the limiting slide groove, the movement track of the main body shell is limited through the limiting slide groove, and the main body shell is prevented from excessively moving, and since the paddle is always parallel to the liquid surface to a certain extent, the rotating efficiency of the paddle is further improved.

Description

Technical Field

[0001] This invention relates to the field of tidal power generation technology, and more specifically to a tidal power generation device for ships. Background Technology

[0002] Tidal energy is a renewable energy source formed by the periodic rise and fall of seawater due to the gravitational pull of celestial bodies. It can supplement the energy structure, achieve zero carbon emissions, and its stability far exceeds that of wind and solar energy, making it a highly valuable clean energy source. It is usually utilized by fixed tidal power stations and floating tidal power generation platforms. For reference, see the relevant patent CN114562408B. Its essence is to capture the water surface wave energy through "buoy + pendulum", and convert the bidirectional swing of the pendulum into the unidirectional rotation of the shaft to drive the generator through a bidirectional pawl-ratchet mechanism. Subsequently, the utilization of water flow impact energy is expanded by adding a derailleur assembly with flexible baffles. With the eccentric ring-contraction rod structure, the derailleur can adaptively extend and retract to reduce underwater resistance. At the same time, solar power panels are integrated. The floating block linkage mechanism keeps the angle of the power panels stable and achieves self-cleaning through water oscillation. Finally, a composite energy utilization scheme of "water energy (wave energy + impact energy) + solar energy" is formed, and the energy conversion efficiency is improved through multi-structure collaborative optimization.

[0003] To illustrate the utilization of tidal energy by ships: Traditional fixed hydroelectric power generation structures have blades (including flexible baffles) that are rigidly connected to the deflector wheel. This makes them unable to adapt to changes in water flow direction, and the fixed installation method struggles to cope with dynamic changes in water flow impact angles. Furthermore, the lack of design to manage turbulent water flow leads to uneven stress distribution, limited energy conversion efficiency, and an inability to meet the dynamic power generation needs of ships in motion. Therefore, it is necessary to focus on flexible blade design. Through the cooperation of sliding rods and limiting grooves, the flexible blades can adaptively deform with the water flow thrust, working in conjunction with the fixed blades to drive the blade rotation. They can also adjust their direction of motion synchronously when the water flow direction changes and automatically reset after the loss of external force. Combined with the deflection structure of the guide plate, side plates, and bidirectional power generation unit, this precisely adapts to the dynamic, multi-directional water flow generated by ship movement and sea surface fluctuations, ultimately achieving efficient capture and stable power generation of water flow energy in ship scenarios. Therefore, we provide a tidal energy generation device for ships to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a tidal power generation device for ships to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A tidal power generation device for ships includes a fixed plate, a limiting bracket unit that can adaptively adjust the angle of the device is provided on the side of the fixed plate, and a bidirectional power generation unit that adjusts the blade curvature according to the direction of liquid flow is provided on the side of the limiting bracket unit.

[0007] The limiting bracket unit includes a base plate fixedly installed on the side of the fixed plate and a side plate disposed on the side of the base plate to limit the movement trajectory of the bidirectional power generation unit.

[0008] The bidirectional power generation unit includes a main shell disposed on the side of the side plate, a drive shaft disposed inside the main shell for driving, a blade disposed on the back of the telescopic limit slide rod for moving with the water flow, and flexible blades disposed inside the blade.

[0009] A further improvement of the technical solution of the present invention is that: a rotating shaft is fixedly connected to the side of the main body shell, a bottom guard plate is fixedly connected to the bottom surface of the main body shell, and a limiting slide rod is fixedly connected to the side of the main body shell.

[0010] A further improvement of the technical solution of the present invention is that: a guide plate is fixedly connected to one end of the top surface of the main body shell, a fixed arm is fixedly connected to the side of the main body shell, and the blade is rotatably connected inside the fixed arm.

[0011] A further improvement of the technical solution of the present invention is that: a protective shell is fixedly connected to the middle of the side of the main body shell, one end of the outer surface of the blade is rotatably connected to the inside of the protective shell, a drive shaft is rotatably connected to the inside of the main body shell, and a bevel gear is fixedly connected to the middle of the outer surface of the drive shaft.

[0012] A further improvement of the technical solution of the present invention is that: a transmission belt is movably connected to one end of the outer surface of the drive shaft, a generator is fixedly connected to one end of the inner surface of the main body shell, a bevel gear is fixedly connected to the input end of the generator, and the bevel gear meshes with the bevel gear.

[0013] A further improvement of the technical solution of the present invention is that: a drive groove is provided in the middle of the outer surface of the blade, one end of the transmission belt is movably connected to the inside of the drive groove, a fixed blade is fixedly connected inside the blade, and a limit groove is provided on the inner side of the blade.

[0014] A further improvement of the technical solution of the present invention is that: a sliding rod is slidably connected inside the limiting groove, and a flexible blade is fixedly connected to the outer surface of the sliding rod, and the flexible blade is fixedly connected inside the blade.

[0015] A further improvement of the technical solution of the present invention is that: a spring is fixedly connected to the side of the substrate, one end of the spring is fixedly connected to the side of the main body shell, a telescopic limiting slide rod is movably connected to the other side of the substrate, the other end of the telescopic limiting slide rod is movably connected to one end of the side of the main body shell, and a fixing buckle is fixedly connected to the side of the substrate.

[0016] A further improvement of the technical solution of the present invention is that: a connecting block is fixedly connected to the side of the side plate, the connecting block is movably connected to the inside of the side of the fixing buckle, the rotating shaft is rotatably connected to the inside of the side of the connecting block, and a limiting groove is formed inside the side of the side plate.

[0017] A further improvement of the technical solution of the present invention is that: the limiting slide rod is slidably connected inside the limiting slide groove, a return spring is fixedly connected inside the limiting slide groove, one end of the return spring is fixedly connected to the top surface of the limiting slide rod, and a flow guide is fixedly connected to the bottom surface of the limiting slide groove.

[0018] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0019] 1. This invention provides a tidal power generation device for ships, which is installed inside a limiting support unit via a rotating shaft. When the ship moves or the sea surface fluctuates, seawater rushes in from the back of the main shell and drives the propeller blades to rotate. As the seawater flows, the propeller blades rotate in the corresponding direction. The drive shaft is driven to rotate via a transmission belt. The bevel gear on the surface of the drive shaft drives the generator to work through the bevel gear rod to complete the power generation operation.

[0020] Guided by the deflector, the seawater flows along the deflector, sorting the chaotic seawater into a laminar flow with a stable direction, ensuring that the blades are subjected to uniform force. At the same time, the bottom guard plate set on the bottom of the shaft makes the bottom of the shaft streamlined, so as not to affect the movement of the hull.

[0021] 2. The present invention provides a tidal power generation device for ships. The water flow impacts the side of the flexible blade, and the thrust of the water flow drives the slide rod to slide inside the limiting groove, so that the flexible blade undergoes adaptive deformation as a whole. In turn, in cooperation with the fixed blade pushed by the water flow, the blade is pushed to rotate in the direction of the water flow. At this time, the transmission belt installed inside the drive groove will drive the drive shaft to move with the transmission of the blade.

[0022] As the direction of the water flow changes, the direction of the slide bar also changes, so that the flexible blade always adapts to the current water flow and rotates in the opposite direction. After the external force is lost, the tension of the flexible blade itself drives the slide bar to reset and restore the flexible blade to a horizontal state, so that the subsequent water flow can continue to push it.

[0023] 3. The present invention provides a tidal power generation device for ships. As the direction of the ship's movement deviates from the direction of the seawater flow, the connecting block will drive the side plate and the bidirectional power generation unit to adaptively deflect around the fixed buckle as an axis, so as to ensure that the blades are aligned with the direction of the seawater flow and to ensure the operating efficiency of the blades.

[0024] As the seawater fluctuates, the bidirectional power generation unit will oscillate adaptively to ensure that the blades are parallel to the liquid surface. At this time, the shaft will rotate on the back of the connecting block, and the limiting slide rod will slide inside the limiting slide groove. The limiting slide groove restricts the movement trajectory of the main body shell and prevents the main body shell from moving excessively. Since the blades and the liquid surface always maintain a certain degree of parallelism, the rotation efficiency of the blades is further improved. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the bidirectional power generation unit of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the bidirectional power generation unit of the present invention;

[0028] Figure 4 This is a schematic diagram of the component structure of the bidirectional power generation unit of the present invention;

[0029] Figure 5 This is a schematic diagram of the component structure of the bidirectional power generation unit of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the limiting bracket unit of the present invention;

[0031] Figure 7 This is a schematic diagram of the component structure of the limiting bracket unit of the present invention.

[0032] In the diagram: 1. Fixed plate; 2. Limiting bracket unit; 21. Base plate; 22. Telescopic limiting slide bar; 23. Spring; 24. Fixing buckle; 25. Connecting block; 26. Side plate; 27. Limiting slide groove; 28. Flow guide; 29. ​​Return spring; 3. Bidirectional power generation unit; 31. Rotating shaft; 32. Main body shell; 33. Limiting slide bar; 34. Bottom guard plate; 35. Flow guide plate; 36. Fixed arm; 37. Blade; 38. Generator; 39. Bevel gear rod; 310. Protective shell; 311. Transmission belt; 312. Drive shaft; 313. Bevel gear; 314. Drive groove; 315. Limiting groove; 316. Fixed blade; 317. Flexible blade; 318. Slide bar. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to embodiments:

[0034] Example 1: As Figure 1-7 As shown, the present invention provides a tidal power generation device for ships, including a fixed plate 1, a limiting bracket unit 2 for adaptively adjusting the angle of the device provided on the side of the fixed plate 1, a bidirectional power generation unit 3 for adjusting the blade curvature according to the liquid flow direction provided on the side of the limiting bracket unit 2, the bidirectional power generation unit 3 including a main body shell 32 provided on the side of the side plate 26, a drive shaft 312 provided inside the main body shell 32 for driving, a blade 37 provided on the back of the telescopic limiting slide bar 22 for moving with the water flow, a flexible blade 317 provided inside the blade 37, a rotating shaft 31 fixedly connected to the side of the main body shell 32, a bottom guard plate 34 fixedly connected to the bottom surface of the main body shell 32, and a limiting slide bar 33 fixedly connected to the side of the main body shell 32.

[0035] The rotating shaft 31 is waterproofed to ensure the safety of its internal components. The guide plate 35 reduces water splashing during operation and plays a basic guiding role. The rotating shaft 31 is located at the axis of the main body shell 32. The internal components of the main body shell 32 are generally symmetrical about the axis of the rotating shaft 31.

[0036] A guide plate 35 is fixedly connected to one end of the top surface of the main body shell 32. A fixed arm 36 is fixedly connected to the side of the main body shell 32. A blade 37 is rotatably connected inside the fixed arm 36. A protective shell 310 is fixedly connected to the middle of the side of the main body shell 32. One end of the outer surface of the blade 37 is rotatably connected to the inside of the protective shell 310. A drive shaft 312 is rotatably connected inside the main body shell 32. A bevel gear 313 is fixedly connected to the middle of the outer surface of the drive shaft 312.

[0037] There are two limiting slide bars 33, which are respectively set on the left and right sides of the rotating shaft 31. Two fixed arms 36 are respectively fixedly connected to the left and right sides of the main body shell 32 to restrict the blade 37 to only rotate.

[0038] The protective housing 310 fixedly connected to the side of the main housing 32 limits the movement of the blade 37. The hollow interior of the protective housing 310 allows the transmission belt 311 to move inside. The two ends of the drive shaft 312 are restricted inside the drive shaft 312 and are only allowed to rotate. The bevel gear 313 provided on the top surface of the drive shaft 312 meshes with one end of the bevel gear rod 39. The rotation of the drive shaft 312 will drive the bevel gear rod 39 to move through the bevel gear 313, thereby driving the generator 38 to generate electricity.

[0039] In this embodiment, the rotating shaft 31 is set inside the limiting bracket unit 2. When the hull starts or the sea surface fluctuates, seawater rushes in from the back of the main shell 32 and drives the blade 37 to rotate. As the seawater flows, the blade 37 rotates in the corresponding direction. The drive shaft 312 is driven to rotate through the transmission belt 311. The bevel gear 313 on the surface of the drive shaft 312 drives the generator 38 to work through the bevel gear rod 39 to complete the power generation operation.

[0040] Guided by the guide plate 35, the seawater flows along the guide plate 35, sorting the chaotic seawater into a laminar flow with a stable direction, ensuring that the blade 37 is subjected to uniform force. At the same time, the bottom guard plate 34 set on the bottom surface of the shaft 31 makes the bottom of the shaft 31 streamlined, avoiding affecting the movement of the hull.

[0041] Example 2: As Figure 1-7 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, a transmission belt 311 is movably connected to one end of the outer surface of the drive shaft 312, a generator 38 is fixedly connected to one end of the inner surface of the main body shell 32, a bevel gear 39 is fixedly connected to the input end of the generator 38, the bevel gear 39 meshes with the bevel gear 313, a drive groove 314 is opened in the middle of the outer surface of the blade 37, one end of the transmission belt 311 is movably connected to the inside of the drive groove 314, a fixed blade 316 is fixedly connected to the inside of the blade 37, a limiting groove 315 is opened on the inner side of the blade 37, a sliding rod 318 is slidably connected to the inside of the limiting groove 315, a flexible blade 317 is fixedly connected to the outer surface of the sliding rod 318, and the flexible blade 317 is fixedly connected to the inside of the blade 37.

[0042] The blade 37 has an overall structure divided into three sections. The stability of the movement is ensured by the cooperation of the fixed arm 36 and the protective shell 310. Each blade 37 has three flexible blades 317 and three fixed blades 316. Each flexible blade 317 and fixed blade 316 are spaced apart. The position of the limiting groove 315 corresponds to the position of the flexible blade 317. The deformation state of the flexible blade 317 is limited by the movement trajectory of the limiting rod 318. The height of the fixed blade 316 is one-third of that of the flexible blade 317, and its top is provided with an arc-shaped guide surface to assist the overall rotation of the blade 37.

[0043] In this embodiment, the water flow impacts the side of the flexible blade 317, and the thrust of the water flow drives the slide bar 318 to slide inside the limiting groove 315, causing the flexible blade 317 to undergo adaptive deformation. In turn, in cooperation with the fixed blade 316 pushed by the water flow, the blade 37 is pushed to rotate in the direction of the water flow. At this time, the transmission belt 311 installed inside the drive groove 314 will drive the drive shaft 312 to move along with the transmission of the blade 37.

[0044] As the direction of the water flow changes, the direction of movement of the slide bar 318 also changes, so that the flexible blade 317 always adapts to the current water flow and rotates in the opposite direction. After the external force is lost, the tension of the flexible blade 317 itself drives the slide bar 318 to reset and restore the flexible blade 317 to a horizontal state so that the subsequent water flow can continue to push it.

[0045] Example 3: As Figure 1-7 As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the limiting bracket unit 2 includes a base plate 21 fixedly installed on the side of the fixing plate 1, a side plate 26 disposed on the side of the base plate 21 for limiting the movement trajectory of the bidirectional power generation unit 3, a spring 23 fixedly connected to the side of the base plate 21, one end of the spring 23 fixedly connected to the side of the main body shell 32, a telescopic limiting slide rod 22 movably connected to the other side of the base plate 21, the other end of the telescopic limiting slide rod 22 movably connected to one end of the side of the main body shell 32, and a fixing buckle 24 fixedly connected to the side of the base plate 21.

[0046] The base plate 21 is fixed to the stern of the hull by the fixing plate 1 and kept stable. The base plate 21 is connected to the side of the main body shell 32 by the telescopic limiting slide bar 22 and the spring 23. The rotating shaft 31 rotates inside the back of the connecting block 25. At the same time, the limiting slide bar 33 slides inside the limiting slide groove 27 to ensure its connection is stable. The reset spring 29 will apply a certain pressure to the limiting slide bar 33. With the cooperation of multiple reset springs 29, the main body shell 32 is in a horizontal state under the condition of no external force.

[0047] A connecting block 25 is fixedly connected to the side of the side plate 26. The connecting block 25 is movably connected to the inside of the side of the fixing buckle 24. The rotating shaft 31 is rotatably connected to the inside of the side of the connecting block 25. A limiting slide groove 27 is opened inside the side of the side plate 26. The limiting slide rod 33 is slidably connected inside the limiting slide groove 27. A return spring 29 is fixedly connected inside the limiting slide groove 27. One end of the return spring 29 is fixedly connected to the top surface of the limiting slide rod 33. A guide shroud 28 is fixedly connected to the bottom surface of the limiting slide groove 27.

[0048] The bidirectional power generation unit 3, together with the connecting block 25 and the side plate 26, is connected to the base plate 21 with the fixing buckle 24 as the axis, allowing it to swing to a certain extent. At the same time, the spring 23 provides a certain support force to the main body shell 32, assisting it to quickly reset.

[0049] In this embodiment, as the hull moves in a direction that is offset from the direction of the seawater flow, the connecting block 25 will cause the side plate 26 and the bidirectional power generation unit 3 to rotate adaptively around the fixed buckle 24 as an axis, so as to ensure that the blade 37 is aligned with the direction of the seawater flow and to ensure the operating efficiency of the blade 37.

[0050] As the seawater fluctuates, the bidirectional power generation unit 3 will oscillate adaptively to ensure that the blade 37 is parallel to the liquid surface. At this time, the rotating shaft 31 will rotate on the back of the connecting block 25, and the limiting slide rod 33 will slide inside the limiting slide groove 27. The limiting slide groove 27 restricts the movement trajectory of the main body shell 32 and avoids excessive movement of the main body shell 32. Since the blade 37 always maintains a certain degree of parallelism with the liquid surface, the rotation efficiency of the blade 37 is further improved.

[0051] The working principle of this tidal power generation device for ships will be explained in detail below.

[0052] like Figure 1-7 As shown, the rotating shaft 31 is installed inside the limiting bracket unit 2. When the hull starts or the sea surface is fluctuating, seawater rushes in from the back of the main shell 32 and drives the blade 37 to rotate. As the seawater flows, the water flow hits the side of the flexible blade 317. The thrust of the water flow drives the slide bar 318 to slide inside the limiting groove 315, so that the flexible blade 317 undergoes adaptive deformation. Then, in cooperation with the fixed blade 316 pushed by the water flow, the blade 37 is pushed to rotate in the direction of the water flow. At this time, the transmission belt 311 installed inside the drive groove 314 will drive the drive shaft 312 to move with the transmission of the blade 37.

[0053] As the direction of water flow changes, the direction of movement of slide bar 318 will also change, so that flexible blade 317 always adapts to the current water flow and rotates in the opposite direction. After the external force is lost, the tension of flexible blade 317 itself drives slide bar 318 to reset and restore flexible blade 317 to a horizontal state, so that subsequent water flow can continue to push.

[0054] As the direction of the ship's movement deviates from the direction of the seawater flow, the connecting block 25 will drive the side plate 26 and the bidirectional power generation unit 3 to adaptively deflect around the fixed buckle 24 as the axis, so as to ensure that the blade 37 is consistent with the direction of the seawater flow and ensure the operating efficiency of the blade 37. Under the guidance of the guide plate 35, the seawater flows along the guide plate 35, sorting the chaotic seawater into a laminar flow with a stable flow direction, ensuring that the blade 37 is subjected to uniform force. At the same time, the bottom guard plate 34 set on the bottom surface of the rotating shaft 31 makes the bottom shape of the rotating shaft 31 streamlined, so as not to affect the movement of the ship.

[0055] As the seawater fluctuates, the bidirectional power generation unit 3 will oscillate adaptively to ensure that the blade 37 is parallel to the liquid surface. At this time, the rotating shaft 31 will rotate on the back of the connecting block 25, and the limiting slide rod 33 will slide inside the limiting slide groove 27. The limiting slide groove 27 restricts the movement trajectory of the main body shell 32 and avoids excessive movement of the main body shell 32. Since the blade 37 always maintains a certain degree of parallelism with the liquid surface, the rotation efficiency of the blade 37 is further improved.

[0056] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements made without departing from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A tidal energy power plant for a ship comprising a fixed plate (1), characterized in that: The side of the fixed plate (1) is provided with a limiting support unit (2) which can adjust the angle of the equipment, and the side of the limiting support unit (2) is provided with a bidirectional power generation unit (3) which can adjust the blade curvature along the liquid flow direction; The limiting support unit (2) comprises a base plate (21) fixedly installed on the side of the fixed plate (1), and a side plate (26) provided on the side of the base plate (21) and used for limiting the movement track of the bidirectional power generation unit (3). The bidirectional power generation unit (3) comprises a main body shell (32) provided on the side of the side plate (26), a driving shaft (312) provided in the main body shell (32) and used for driving, a paddle (37) provided on the back of the telescopic limiting slide rod (22) and used for moving along the water flow, and a flexible blade (317) provided in the paddle (37); the side of the main body shell (32) is fixedly connected with a rotating shaft (31), and the side of the main body shell (32) is fixedly connected with a limiting slide rod (33); the side of the base plate (21) is fixedly connected with a spring (23), one end of the spring (23) is fixedly connected on the side of the main body shell (32), the other side of the base plate (21) is movably connected with the telescopic limiting slide rod (22), the other end of the telescopic limiting slide rod (22) is movably connected on one end of the side of the main body shell (32), and the side of the base plate (21) is fixedly connected with a fixed buckle (24); the side of the side plate (26) is fixedly connected with a connecting block (25), the connecting block (25) is movably connected in the side of the fixed buckle (24), and the rotating shaft (31) is rotatably connected in the side of the connecting block (25).

2. A tidal energy power plant for a marine vessel according to claim 1, characterised in that: The bottom of the main body shell (32) is fixedly connected with a bottom guard plate (34).

3. A tidal energy power plant for a marine vessel according to claim 1, characterised in that: One end of the top of the main body shell (32) is fixedly connected with a guide plate (35), the side of the main body shell (32) is fixedly connected with a fixed arm (36), and the paddle (37) is rotatably connected in the fixed arm (36).

4. A tidal energy power plant for a marine vessel according to claim 1, characterised in that: The middle of the side of the main body shell (32) is fixedly connected with a protective shell (310), one end of the outer surface of the paddle (37) is rotatably connected in the protective shell (310), the main body shell (32) is rotatably connected with the driving shaft (312), and the middle of the outer surface of the driving shaft (312) is fixedly connected with a bevel gear (313).

5. A tidal energy power plant for a marine vessel according to claim 1, characterised in that: One end of the outer surface of the driving shaft (312) is movably connected with a transmission belt (311), one end of the inside of the main body shell (32) is fixedly connected with a generator (38), the input end of the generator (38) is fixedly connected with a bevel gear rod (39), and the bevel gear rod (39) is meshed with the bevel gear (313).

6. A tidal energy power plant for a marine vessel according to claim 5, characterised in that: The middle of the outer surface of the paddle (37) is provided with a driving groove (314), one end of the transmission belt (311) is movably connected in the driving groove (314), the inside of the paddle (37) is fixedly connected with a fixed blade (316), and the inside of the side of the paddle (37) is provided with a limiting groove (315).

7. A tidal energy power plant for a marine vessel according to claim 6, characterised in that: The inside of the limiting groove (315) is slidably connected with a slide bar (318), the outer surface of the slide bar (318) is fixedly connected with a flexible blade (317), and the flexible blade (317) is fixedly connected in the inside of the paddle (37).

8. A tidal energy power plant for a marine vessel according to claim 2, characterised in that: The side face of the side plate (26) is internally provided with a limiting sliding groove (27).

9. A tidal energy power plant for a marine vessel according to claim 8, characterised in that: The limiting sliding groove (27) is internally slidably connected with a limiting sliding bar (33), the inside of the limiting sliding groove (27) is fixedly connected with a return spring (29), one end of the return spring (29) is fixedly connected with the top face of the limiting sliding bar (33), and the bottom face of the limiting sliding groove (27) is fixedly connected with a flow guide cover (28).

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