A wave energy power generation device

Abstract

The present invention discloses a wave energy power generation device, which relates to the field of wave power generation and includes a main body part, a floating body, an electric energy conversion part and a compensation control system. Inside the main body part, a kinetic energy transmission cylinder body with an L-shaped structure is installed. An active piston is movably installed inside the vertical end of the kinetic energy transmission cylinder body. An active piston rod is connected to the active piston. A passive piston is movably installed inside the horizontal end of the kinetic energy transmission cylinder body. A passive piston rod is connected to the passive piston. The lower part of the floating body is connected to the top of the active piston rod through a connecting component. The electric energy conversion part is arranged on one side of the main body part and is in transmission connection with the passive piston rod through a transmission component. The compensation control system is installed on the main body part. By means of the provided compensation control system, the present invention can achieve stroke compensation for the floating body when the amplitude of its up and down floating under the influence of waves is too large or too small, so that the reciprocating movement stroke of the passive piston rod is within a reasonable range, improving the power generation efficiency and power generation stability.

Description

Technical Field

[0001] The present invention relates to the field of wave energy power generation, and particularly to a wave energy power generation device. Background Art

[0002] As is well known, wave energy power generation is a technology that uses the energy generated by the movement of ocean surface waves to generate electricity. Its basic principle is to capture the kinetic energy and potential energy of waves, convert them into mechanical energy, and then convert them into electrical energy;

[0003] For example, the authorized publication number is CN116085177B, the authorized publication date is June 6, 2023, and the name is an oscillating water column type wave energy power generation device for a surge-proof buoy, including an air chamber, a rotary elbow, and a draft tube connected in sequence. A guide rail, a reciprocating push plate, and a turbine are arranged in the draft tube. In this wave energy conversion device, the draft tube is horizontally arranged, and a reciprocating push plate is arranged in the draft tube. It cleverly converts the liquid level rise and fall in the air chamber into the relative reciprocating motion of the reciprocating push plate in the draft tube. When the wave energy is converted into effective space energy, it is converted into the mechanical energy of the reciprocating push plate again, and then the mechanical energy is converted into effective space energy through the reciprocating motion of the push plate...; Another example is the authorized publication number CN115875183B, the authorized publication date is May 23, 2023, and the name is a wave energy power generation system and a power generation control method;

[0004] Similar to the above applications, due to the instability of wave energy, that is, the fluctuation size of waves cannot be controlled and has uncertainty, resulting in a large change in the floating range of the floating body, affecting energy conversion, and easily causing damage to the structure of the conversion equipment. In existing wave energy power generation equipment, to solve this problem, a series of power structures often need to be designed. For example, sensors are set on the floating body structure to sense the floating of waves in real time. When the floating exceeds the threshold, a signal is transmitted to the control device, and the control device then controls the power conversion structure to make adjustments. This not only greatly increases the production cost of the entire device, but also relatively increases the application cost and energy consumption of the device. Summary of the Invention

[0005] (I) Object of the Invention

[0006] In view of this, the object of the present invention is to provide a wave energy power generation device. By setting a compensation control system, it can achieve stroke compensation for the floating body when its floating amplitude is too large or too small under the influence of waves, so that the reciprocating motion stroke of the passive piston rod is within a reasonable range, thereby achieving the effect of reducing the influence of wave energy and improving the power generation efficiency and stability.

[0007] (II) Technical Solution

[0008] To achieve the above technical objectives, the present invention provides a wave energy power generation device, which includes a main body part disposed below the water surface of the water body. A kinetic energy transmission cylinder body is installed inside the main body part. The kinetic energy transmission cylinder body adopts an L-shaped structure. An active piston is movably installed inside the vertical end of the kinetic energy transmission cylinder body. An active piston rod is connected to the active piston. A passive piston is movably installed inside the horizontal end of the kinetic energy transmission cylinder body. A passive piston rod is connected to the passive piston;

[0009] A floating body floating on the water surface. The lower part of the floating body is connected to the top of the active piston rod through a connecting component;

[0010] An electric energy conversion part is disposed on one side of the main body part. The electric energy conversion part is in transmission connection with the passive piston rod through a transmission component;

[0011] A compensation control system is installed on the main body part for compensating and controlling the effective space inside the kinetic energy transmission cylinder body.

[0012] As a further description of the above technical solution: The compensation control system includes:

[0013] A controllable bladder disposed inside the kinetic energy transmission cylinder body. The controllable bladder can contract and expand under external restraint control;

[0014] An air control device disposed outside the main body part for controlling the contraction and expansion of the controllable bladder;

[0015] Wherein, the air control device is connected to the controllable bladder through an air control pipeline.

[0016] As a further description of the above technical solution: An air control piston plate is movably installed inside the air control device. The lower part inside the air control device is separated into an air chamber by the air control piston plate. The air control pipeline is communicated with the air chamber, so that the controllable bladder is communicated with the inside of the air chamber. A pressure control component is provided above the air control device for controlling the movement of the air control piston plate.

[0017] As a further description of the above technical solution: A plurality of fixing plates are installed at a position above the air control piston plate inside the air control device. The fixing plates and the air control piston plate are connected through an elastic air pressure balance device.

[0018] As a further description of the above technical solution: An activity plate capable of moving up and down following the active piston rod is installed at the top of the active piston rod. The pressure control component includes:

[0019] An upward control column fixedly installed above the air control piston plate. A control groove is provided along the vertical direction on the upward control column;

[0020] An upward control crossbar, one end of which is fixed on the movable plate so that it can move up and down following the lifting and lowering of the movable plate, and the other end of the upward control crossbar is clamped in the control groove;

[0021] A downward control column, which is fixedly installed above the pneumatic control piston plate, and a second rack portion is provided above one side of the downward control column;

[0022] A downward control bracket, which adopts an inverted L-shaped structure, one end of the downward control bracket is fixed on the movable plate so that it can move up and down following the lifting and lowering of the movable plate, and a first rack portion is provided above one side of the downward control bracket;

[0023] Wherein, a control gear is rotatably installed between the downward control bracket and the downward control column inside the pneumatic control device through a shaft rod, the control gear is always meshed and connected with the second rack portion, and the first rack portion can be meshed and connected with the control gear after the downward control bracket descends to a predetermined position.

[0024] As a further description of the above technical solution: The connecting component includes:

[0025] A common part, which is arranged above the active piston rod and is fixedly connected with the active piston rod through a main cable;

[0026] Sub-cables, a plurality of which are provided, and the plurality of sub-cables are radially connected between the common part and the floating body.

[0027] As a further description of the above technical solution: A fixed seat is installed above the main body portion, the top of the active piston rod passes through the fixed seat, and a plurality of downward traction components are connected between the movable plate and the fixed seat, and the downward traction components have elasticity.

[0028] As a further description of the above technical solution: A transmission chamber, a gear chamber and a generator set are provided inside the electric energy conversion portion. Among them, the transmission assembly is arranged in the transmission chamber, a transmission gear set is installed in the gear chamber, the transmission gear set is in transmission connection with the generator set, and the reciprocating motion of the passive piston rod is converted into a circular motion through the transmission assembly.

[0029] As a further description of the above technical solution: The transmission assembly includes a shaft disc and a connecting rod. Among them, one end of the connecting rod is movably connected with one end of the passive piston rod through a swivel joint, the other end of the connecting rod is rotatably connected with an eccentric shaft on the surface of the shaft disc, and the central axis of the shaft disc is connected with the drive shaft of the transmission gear set.

[0030] As a further description of the above technical solution: a first-stage underwater wave baffle is provided on one side of the main body, and a second-stage underwater wave baffle is provided above one side of the main body. Among them, the side of the first-stage underwater wave baffle and the second-stage underwater wave baffle corresponding to the ocean adopts an arc structure.

[0031] In the above technical solution, a wave energy power generation device provided by the present invention can achieve stroke compensation for the floating body when the floating amplitude is too large or too small under the influence of waves through the setting of a compensation control system, so that the reciprocating movement stroke of the passive piston rod is within a reasonable range, thereby achieving the effect of reducing the influence of wave energy, improving the power generation efficiency and power generation stability. And through the ingenious structural design of the pressure control component in the compensation control system, its power source comes from the device itself, that is, it is automatically realized by relying on the action of wave energy conduction. Therefore, this compensation control system does not need to be controlled by an additional power device, that is, the self-compensation effect is achieved, not only the energy saving is greatly improved, but also the production cost and application cost of the equipment are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0033] Figure 1 It is a schematic diagram of the overall structure of a wave energy power generation device provided by the present invention;

[0034] Figure 2 It is a bottom view of a wave energy power generation device provided by the present invention;

[0035] Figure 3 It is a schematic diagram of the internal structure of the main body in a wave energy power generation device provided by the present invention;

[0036] Figure 4 It is a schematic diagram of the internal structure of the electric energy conversion part in a wave energy power generation device provided by the present invention;

[0037] Figure 5 It is a schematic diagram of the installation structure of the transmission component in a wave energy power generation device provided by the present invention;

[0038] Figure 6 It is a schematic diagram of the structure of the transmission component in a wave energy power generation device provided by the present invention;

[0039] Figure 7 It is a schematic diagram of the installation structure of the compensation control system in a wave energy power generation device provided by the present invention;

[0040] Figure 8 This is a schematic structural diagram of a compensation control system in a wave energy power generation device provided by the present invention.

[0041] Description of the drawings: 1. Main body part; 100. Underwater first-stage wave breaker; 101. Underwater second-stage wave breaker; 2. Electric energy conversion part; 200. Transmission chamber; 201. Gear chamber; 3. Floating body; 4. Connecting component; 400. Sub-cable; 401. Common part; 402. Main cable; 5. Compensation control system; 500. Controllable bladder; 501. Pneumatic control pipeline; 502. Pneumatic control device; 503. Pneumatic control piston plate; 504. Downward control column; 5040. Second rack part; 505. Upward control column; 5050. Control groove; 506. Upward control cross bar; 507. Air chamber; 508. Elastic air pressure balance device; 509. Fixed plate; 510. Downward control bracket; 5100. First rack part; 511. Shaft rod; 512. Control gear; 6. Movable plate; 7. Kinetic energy transmission cylinder block; 8. Transmission component; 800. Axial disc; 801. Connecting rod; 802. Swivel joint; 803. Eccentric shaft; 9. Transmission gear set; 10. Generator set; 11. Fixed seat; 12. Downward traction component; 13. Active piston rod; 14. Active piston; 15. Passive piston rod; 16. Passive piston. Detailed implementation manners

[0042] The following description is essentially exemplary only and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the implementation manner of the present disclosure, and does not necessarily show the specific dimensions and their ratios of each implementation manner of the present disclosure. Specific parts in a specific drawing may be exaggerated to illustrate the relevant details or structures of the implementation manner of the present disclosure.

[0043] Example 1

[0044] As Figure 1 - Figure 8As shown in the figure, this embodiment provides a technical solution: a wave energy power generation device, which includes a main body 1, a floating body 3, an electric energy conversion unit 2, and a compensation control system 5. The main body 1 is arranged below the water surface of the water body. Inside the main body 1, a kinetic energy transmission cylinder 7 is installed. The kinetic energy transmission cylinder 7 adopts an L-shaped structure. Inside the vertical end of the kinetic energy transmission cylinder 7, a driving piston 14 is movably installed. A driving piston rod 13 is connected to the driving piston 14. Inside the horizontal end of the kinetic energy transmission cylinder 7, a driven piston 16 is movably installed. A driven piston rod 15 is connected to the driven piston 16. The floating body 3 floats on the water surface. The lower part of the floating body 3 is connected to the top of the driving piston rod 13 through a connecting component 4. When the floating body 3 floats up and down under the action of waves, the driving piston 14 can be driven to move up and down through the driving piston rod 13. The electric energy conversion unit 2 is arranged on one side of the main body 1. The electric energy conversion unit 2 is in transmission connection with the driven piston rod 15 through a transmission assembly 8, and is used to convert the reciprocating motion mechanical energy of the driven piston rod 15 into electric energy for storage. The compensation control system 5 is installed on the main body 1, and is used to compensate and control the effective space inside the kinetic energy transmission cylinder 7, so that the waves transmitted by the floating body 3 can be kept within a stable range, and the efficiency and effect of power generation are improved;

[0045] Working principle: When the device is in use, first, the floating body 3 floats on the water surface. When the floating body 3 drives up and down under the action of waves, the driving piston 14 is driven to move up and down through the connecting component 4. Under the action of the effective space, the moving stroke of the driven piston 16 in the kinetic energy transmission cylinder 7 is kept consistent with the moving stroke of the driving piston 14 (ignoring the influence of friction), realizing the transfer of kinetic energy. The reciprocating motion mechanical energy of the driven piston rod 15 is conducted to the electric energy conversion unit 2 through the transmission assembly 8, and is converted into electric energy for storage by the electric energy conversion unit 2, realizing the power generation process;

[0046] In summary, by setting the compensation control system 5 on the main body 1, the compensation control system 5 can compensate and control the effective space inside the kinetic energy transmission cylinder 7, so that when the floating body 3 floats up and down with too large an amplitude under the influence of waves, the reciprocating motion stroke of the driven piston rod 15 still remains within a controllable range, thereby achieving the effect of reducing the influence of wave energy and improving the efficiency and stability of power generation.

[0047] Such as Figure 4 、 Figure 7 and Figure 8As shown in the figure, due to the instability of wave energy, the floating range of the floating body 3 changes greatly, which affects the energy conversion and is likely to cause damage to the structure of the conversion device. To solve this problem, in this embodiment, the compensation control system 5 includes a controllable bladder 500 and a pneumatic control device 502. Among them, the controllable bladder 500 is arranged in the kinetic energy transmission cylinder block 7. The controllable bladder 500 can contract and expand under external constraint control, so as to change the effective space between the active piston 14 and the passive piston 16. The pneumatic control device 502 is arranged outside the main body part 1 and is used to control the contraction and expansion of the controllable bladder 500. The pneumatic control device 502 is connected to the controllable bladder 500 through a pneumatic control pipeline 501;

[0048] The device controls the contraction and expansion of the controllable bladder 500 through the pneumatic control device 502. When the controllable bladder 500 contracts and expands, the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 changes. Based on this, when the floating body 3 floats up and down too much, through traction, the moving stroke of the passive piston 16 is increased. At this time, by adjusting the expansion and contraction of the controllable bladder 500, the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 is changed, and the effect of adjusting the moving stroke of the passive piston 16 can be achieved.

[0049] The principle is as follows: When the floating body 3 moves up or down with too large a stroke (corresponding to a large wave condition), if there is no regulation of the controllable bladder 500, the moving stroke of the passive piston 16 reciprocatingly moving is large, which is likely to cause damage to the rear transmission assembly 8. After the controllable bladder 500 is set, by controlling the contraction of the controllable bladder 500, the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 is increased. Under the condition of the same moving stroke of the active piston 14, the moving stroke of the passive piston 16 is relatively reduced, achieving the effect of stroke reduction compensation. On the contrary, when the floating body 3 moves up or down with too small a stroke (corresponding to a small wave condition), if there is no regulation of the controllable bladder 500, the moving stroke of the passive piston 16 reciprocatingly moving is small, which affects the conversion of mechanical energy and thus affects the power generation effect. After the controllable bladder 500 is set, by controlling the expansion of the controllable bladder 500, the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 is reduced. Under the condition of the same moving stroke of the active piston 14, the moving stroke of the passive piston 16 is relatively increased, thus achieving the effect of increasing the stroke and ensuring the power generation efficiency.

[0050] It should be noted that: The effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 means: the space remaining after subtracting the area occupied by the controllable bladder 500 from the area between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7.

[0051] It should be noted that: The controllable bladder 500 in this embodiment can be replaced by a structure that can change the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder 7, such as a fixed structure that can be inserted or withdrawn between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder 7. Controlled by an external electric device, when the upward or downward stroke of the floating body 3 is too small, the fixed structure is inserted between the active piston 14 and the passive piston 16 to reduce the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder 7. Conversely, when the upward or downward stroke of the floating body 3 is too large, the fixed structure is withdrawn from between the active piston 14 and the passive piston 16 to increase the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder 7. In this way, the compensation effect can still be achieved.

[0052] As Figure 7 and Figure 8 shown, in order to control the controllable bladder 500 so that it can expand and contract, in this embodiment, an air control piston plate 503 is movably installed inside the air control device 502. The lower part inside the air control device 502 is separated into an air chamber 507 by the air control piston plate 503. The air control pipeline 501 is communicated with the air chamber 507, so that the controllable bladder 500 is communicated with the inside of the air chamber 507. A pressure control component is provided above the air control device 502. The pressure control component is used to control the movement of the air control piston plate 503, so as to realize the expansion and contraction control of the controllable bladder 500, that is, when the air control piston plate 503 moves downward, the controllable bladder 500 can be inflated to make it expand, and when the air control piston plate 503 moves upward, the controllable bladder 500 can be suctioned to make it contract.

[0053] As Figure 8 shown, in order to reduce the influence of the reverse air pressure between the active piston 14 and the passive piston 16 on the controllable bladder 500, in this embodiment, a plurality of fixing plates 509 are installed inside the air control device 502 at a position above the air control piston plate 503. The fixing plates 509 and the air control piston plate 503 are connected by an elastic air pressure balancing device 508. The elastic air pressure balancing device 508 can apply pressure to the air control piston plate 503 to make it in a balanced state. The elastic air pressure balancing device 508 is composed of a combination of springs with gradually increasing spring coefficients from bottom to top, so that the resistance for the air control piston plate 503 to move upward increases exponentially, thereby reducing the reverse influence of the increase in air pressure inside the active piston 14 and the passive piston 16 on the controllable bladder 500.

[0054] It should be noted that: When the air pressure inside the active piston 14 and the passive piston 16 changes, it will still have an impact on the controllable bladder 500, but this impact can be ignored and does not affect the compensation effect of the compensation control system 5.

[0055] As Figure 1 -Figure 5 As shown, in order to reduce the operating cost and production cost of the device, in this embodiment, a movable plate 6 capable of moving up and down following the active piston rod 13 is installed at the top of the active piston rod 13. The pressure control assembly includes an upward control column 505, an upward control cross bar 506, a downward control column 504, and a downward control bracket 510. Among them, the upward control column 505 is fixedly installed above the pneumatic control piston plate 503. A control groove 5050 is formed in the upward control column 505 in the vertical direction. One end of the upward control cross bar 506 is fixed to the movable plate 6 so that it can move up and down following the lifting of the movable plate 6. The other end of the upward control cross bar 506 is engaged in the control groove 5050. The downward control column 504 is fixedly installed above the pneumatic control piston plate 503. A second rack portion 5040 is provided above one side of the downward control column 504. The downward control bracket 510 has an inverted L-shaped structure. One end of the downward control bracket 510 is fixed to the movable plate 6 so that it can move up and down following the lifting of the movable plate 6. A first rack portion 5100 is provided above one side of the downward control bracket 510;

[0056] Inside the pneumatic control device 502, a control gear 512 is rotatably installed at the position between the downward control bracket 510 and the downward control column 504 through a shaft rod 511. The control gear 512 is always meshed with the second rack portion 5040. The first rack portion 5100 can be meshed with the control gear 512 after the downward control bracket 510 moves down to a predetermined position;

[0057] Working principle:

[0058] When the floating body 3 floats and maintains a small floating stroke, the pressure control assembly will not act. Under the elastic force of the elastic pneumatic balance device 508, the pneumatic control piston plate 503 controls the controllable bladder 500 to expand within a predetermined range. At this time, the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder body 7 is small. With the same moving stroke of the active piston 14, the moving stroke of the passive piston 16 relatively increases, thus achieving the effect of range extension compensation:

[0059] When the floating stroke of the floating body 3 is large, the pressure control assembly acts. At this time, when the floating body 3 moves upward beyond the threshold value, it drives the upward control cross bar 506 to move to the top position of the control groove 5050. When it continues to move upward, the upward control cross bar 506 pulls the pneumatic control piston plate 503 upward to compress the elastic pneumatic balance device 508, reducing the air pressure in the air chamber 507 and causing the controllable bladder 500 to contract. The effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder body 7 increases. With the same moving stroke of the active piston 14, the moving stroke of the passive piston 16 relatively decreases, thus achieving the effect of range reduction compensation;

[0060] When the floating body 3 descends beyond the threshold, it drives the downward control bracket 510 to descend to the position where the first rack portion 5100 meshes with the control gear 512. When it continues to descend, under the linkage action of the first rack portion 5100, the control gear 512, and the second rack portion 5040, it drives the downward control column 504 to move upward, causing the pneumatic control piston plate 503 to move upward. Similarly at this time, the elastic pneumatic balance device 508 is compressed, the air pressure in the air chamber 507 decreases, the controllable capsule 500 contracts, and the effective space between the active piston 14 and the passive piston 16 in the kinetic energy transmission cylinder block 7 increases. With the same moving stroke of the active piston 14, the moving stroke of the passive piston 16 relatively decreases, thereby achieving the effect of deceleration compensation;

[0061] In summary, by adopting the compensation control system 5, it is possible to achieve stroke compensation for the floating body 3 when the amplitude of its up and down floating under the influence of waves is too large or too small, so that the reciprocating movement stroke of the passive piston rod 15 is within a reasonable range, thereby achieving the effect of reducing the influence of wave energy, improving the efficiency and stability of power generation. And the compensation control system 5 does not need to be controlled by an additional power device, that is, the effect of self-compensation is achieved. Not only is the energy saving greatly improved, but also the production cost and application cost of the equipment are greatly reduced.

[0062] Embodiment 2

[0063] As Figure 7 shown, this embodiment provides a technical solution: a wave energy power generation device. In order to reduce the erosion effect of waves on the connecting component 4, on the basis of Embodiment 1, in this embodiment, the connecting component 4 includes a common part 401 and branch cables 400. Among them, the common part 401 is arranged above the active piston rod 13 and is fixedly connected to the active piston rod 13 through a main cable 402. There are multiple branch cables 400 in total, and the multiple branch cables 400 are radially connected between the common part 401 and the floating body 3. Such a structural setting enables a flexible connection between the active piston rod 13 and the floating body 3, which can effectively reduce the erosion effect of waves on the connecting component 4, and the structure of the multiple branch cables 400 radially connecting the floating body 3 makes the force transmission of the floating body 3 more uniform.

[0064] Furthermore, as Figure 7 shown, due to the flexible connection between the active piston rod 13 and the floating body 3, when the floating body 3 descends, it cannot respond to the active piston rod 13 in a timely manner. To solve this problem, in this embodiment, a fixed seat 11 is installed above the main body portion 1, the top of the active piston rod 13 passes through the fixed seat 11, and a plurality of downward traction components 12 are connected between the movable plate 6 and the fixed seat 11. The downward traction components 12 have elasticity. When the floating body 3 floats upward, the downward traction components 12 are stretched. When the floating body 3 descends, under the elastic action of the downward traction components 12 themselves, the movable plate 6 is pulled downward.

[0065] Specifically, as Figure 4 shown, in order to achieve the conversion of electrical energy, in this embodiment, a transmission chamber 200, a gear chamber 201 and a generator set 10 are provided inside the electrical energy conversion unit 2. Among them, the transmission assembly 8 is arranged in the transmission chamber 200, a transmission gear set 9 is installed in the gear chamber 201, and the transmission gear set 9 is in transmission connection with the generator set 10. The reciprocating motion of the passive piston rod 15 is converted into a circular motion through the transmission assembly 8 and transmitted to the generator set 10 through the transmission gear set 9 for power generation, realizing the process of converting wave energy into mechanical energy and then into electrical energy.

[0066] Specifically, as Figure 5 - Figure 6 shown, in order to convert the reciprocating motion of the passive piston rod 15 into a circular motion, in this embodiment, the transmission assembly 8 includes a shaft disc 800 and a connecting rod 801. Among them, one end of the connecting rod 801 is movably connected to one end of the passive piston rod 15 through a swivel joint 802, and the other end of the connecting rod 801 is rotatably connected to an eccentric shaft 803 on the surface of the shaft disc 800. The central axis of the shaft disc 800 is connected to the drive shaft of the transmission gear set 9.

[0067] Specifically, as Figure 1 - Figure 4 shown, in order to protect the main body 1, in this embodiment, a first-stage underwater wave protection plate 100 is provided on one side of the main body 1, and a second-stage underwater wave protection plate 101 is provided above one side of the main body 1. Among them, the sides of the first-stage underwater wave protection plate 100 and the second-stage underwater wave protection plate 101 corresponding to the ocean adopt an arc-shaped structure.

[0068] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A wave energy power generation device, characterized in that, It includes: A main body part (1) which is arranged below the water surface of the water body. Inside the main body part (1), a kinetic energy transmission cylinder block (7) is installed. The kinetic energy transmission cylinder block (7) adopts an L-shaped structure. Inside the vertical end of the kinetic energy transmission cylinder block (7), a driving piston (14) is movably installed. A driving piston rod (13) is connected to the driving piston (14). Inside the horizontal end of the kinetic energy transmission cylinder block (7), a driven piston (16) is movably installed. A driven piston rod (15) is connected to the driven piston (16); A floating body (3) which floats on the water surface. Below the floating body (3), it is connected to the top of the driving piston rod (13) through a connecting component (4); An electric energy conversion part (2) which is arranged on one side of the main body part (1). The electric energy conversion part (2) is in transmission connection with the driven piston rod (15) through a transmission component (8); A compensation control system (5) which is installed on the main body part (1) and is used for compensating and controlling the effective space inside the kinetic energy transmission cylinder block (7). The compensation control system (5) includes: A controllable capsule body (500) which is arranged inside the kinetic energy transmission cylinder block (7). The controllable capsule body (500) can contract and expand under external restraint control; An air control device (502) which is arranged outside the main body part (1) and is used for controlling the contraction and expansion of the controllable capsule body (500); Wherein, the air control device (502) is connected to the controllable capsule body (500) through an air control pipeline (501).

2. The wave energy power generation device according to claim 1, characterized in that An air control piston plate (503) is movably installed inside the air control device (502). The lower part inside the air control device (502) is separated into an air chamber (507) by the air control piston plate (503). The air control pipeline (501) is communicated with the air chamber (507), so that the controllable capsule body (500) is communicated with the inside of the air chamber (507). Above the air control device (502), a pressure control component is provided. The pressure control component is used for controlling the movement of the air control piston plate (503).

3. The wave energy power generation device according to claim 2, characterized in that, A plurality of fixing plates (509) are installed at the position above the air control piston plate (503) inside the air control device (502). The fixing plates (509) are connected to the air control piston plate (503) through an elastic air pressure balance device (508).

4. A wave energy power generation device according to claim 3, characterized in that, A movable plate (6) which can move up and down following the driving piston rod (13) is installed at the top of the driving piston rod (13). The pressure control component includes: An upward control column (505) which is fixedly installed above the air control piston plate (503). A control groove (5050) is formed in the upward control column (505) along the vertical direction; An upward control cross bar (506) one end of which is fixed on the movable plate (6) so that it can move up and down following the lifting of the movable plate (6). The other end of the upward control cross bar (506) is clamped in the control groove (5050); A downward control column (504) is fixedly installed above the pneumatic control piston plate (503), and a second rack portion (5040) is provided above one side of the downward control column (504); A downward control bracket (510) has an inverted L-shaped structure. One end of the downward control bracket (510) is fixed on the movable plate (6) so that it can move up and down following the lifting of the movable plate (6). A first rack portion (5100) is provided above one side of the downward control bracket (510); Wherein, inside the pneumatic control device (502), a control gear (512) is rotatably installed between the downward control bracket (510) and the downward control column (504) through a shaft rod (511). The control gear (512) is always meshed and connected with the second rack portion (5040), and the first rack portion (5100) can be meshed and connected with the control gear (512) after the downward control bracket (510) moves down to a predetermined position.

5. A wave energy power generation device according to claim 4, characterized in that, The connecting component (4) includes: A common part (401) is provided above the active piston rod (13) and is fixedly connected with the active piston rod (13) through a main cable (402); Branch cables (400) are provided in plurality. The plurality of branch cables (400) are radially connected between the common part (401) and the floating body (3).

6. The wave energy power generation device according to claim 5, characterized in that, A fixed seat (11) is installed above the main body portion (1). The top of the active piston rod (13) passes through the fixed seat (11). A plurality of downward traction components (12) are connected between the movable plate (6) and the fixed seat (11), and the downward traction components (12) have elasticity.

7. A wave energy power generation device according to claim 1, characterized in that, Inside the electric energy conversion portion (2), there are a transmission chamber (200), a gear chamber (201) and a generator set (10). Among them, the transmission assembly (8) is arranged in the transmission chamber (200), a transmission gear set (9) is installed in the gear chamber (201), the transmission gear set (9) is in transmission connection with the generator set (10), and the reciprocating motion of the passive piston rod (15) is converted into a circular motion through the transmission assembly (8).

8. A wave energy power generation device according to claim 7, characterized in that, The transmission assembly (8) includes a shaft disc (800) and a connecting rod (801). One end of the connecting rod (801) is movably connected with one end of the passive piston rod (15) through a swivel joint (802), the other end of the connecting rod (801) is rotatably connected with an eccentric shaft (803) on the surface of the shaft disc (800), and the central axis of the shaft disc (800) is connected with the driving shaft of the transmission gear set (9).

9. The wave energy power generation device according to claim 1, characterized in that, An underwater first-stage wave breakwater (100) is provided on one side of the main body portion (1), and an underwater second-stage wave breakwater (101) is provided above one side of the main body portion (1). Among them, the side of the underwater first-stage wave breakwater (100) and the underwater second-stage wave breakwater (101) corresponding to the ocean adopts an arc structure.

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