Nodding duck wave energy power generation oxygenation device

Abstract

The application discloses a nodding duck wave energy power generation oxygenation device and belongs to the field of wave energy equipment. The nodding duck wave energy power generation oxygenation device solves the problems that the oxygenation of a net cage consumes part of electric energy, and the power of functional equipment required by the net cage, such as a bait feeder, a cleaning machine, monitoring and lighting, is high, and the equipment cost is also high. In the technical scheme of the application, the offshore infrastructure is provided with a plurality of nodding duck power generation devices. The nodding duck power generation device comprises a duck body and an energy conversion system, and the duck body is in transmission connection with the energy input end of the energy conversion system. The duck body is connected with oxygen supply equipment for supplying oxygen into the offshore infrastructure. The nodding duck power generation oxygenation device utilizes the mechanical movement of the wave energy device to generate electricity, and at the same time, utilizes the mechanical movement to supply oxygen for the oxygenation of the net cage, more efficiently utilizes the marine space and resources, and thus reduces the overall cost.

Description

Technical Field

[0001] This invention relates to a nodding duck-type wave energy power generation and oxygenation device, and relates to the field of wave energy. Background Technology

[0002] The "nodding duck" type wave energy harvesting device (WEC) is a uniquely shaped device. It consists of cams floating on the water surface that move relative to each other, each cam's shape and operation resembling the movement of a duck's beak. Its front end faces the waves, and its rear end faces the waves; both are circular, with their centers located at the axis of rotation. Wave dynamic pressure drives the main structure to rotate around the axis, causing the "duck-like" structure to oscillate back and forth around the axis, thus driving a generator to produce electricity. Wave energy power generation in my country is still some distance from practical application. Due to its higher cost per kilowatt-hour compared to other commonly used power generation methods, its widespread adoption is difficult. Currently, integrating wave energy power generation with existing marine facilities can reduce equipment costs and the cost per kilowatt-hour. In marine aquaculture cages, oxygen needs to be added to increase the oxygen content of the seawater when the oxygen content decreases. Existing oxygenation methods involve using diesel generators or solar panels to power oxygenation pumps, which then perform the oxygenation process. However, this method consumes some electricity, and the cages also need to be equipped with lighting, monitoring, cleaning and other functional equipment, which results in higher electricity costs. Summary of the Invention

[0003] This invention provides a nodding duck-type wave energy power generation and oxygenation device. By utilizing the mechanical movement of the wave energy device to generate electricity, it also uses its mechanical movement to oxygenate the net cages, making more efficient use of marine space and resources, thereby reducing overall costs.

[0004] The technical solution adopted in this invention is a nodding duck wave energy power generation and oxygenation device, including marine infrastructure, wherein the marine infrastructure has a plurality of nodding duck power generation devices.

[0005] The nodding duck power generation device includes a duck body and an energy conversion system, with the duck body connected to the energy input end of the energy conversion system via a transmission connection.

[0006] The duck is connected to an oxygen supply device that supplies oxygen to the marine infrastructure, and the oxygen supply device is driven by the duck.

[0007] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device uses offshore cage aquaculture equipment as its marine infrastructure.

[0008] All the nodding duck power generation units are evenly spaced around the offshore infrastructure.

[0009] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device has a support pipe connected to the marine infrastructure, rotating arms on both sides of the duck body, and the rotating arms are connected to the support pipe; the duck body is rotatably connected to the rotating arms through a rotating shaft.

[0010] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device has several wave-concentrating plates connected to the support tube. The two adjacent wave-concentrating plates are arranged in a V-shape and form a wave-concentrating area with an opening.

[0011] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device includes an oxygen supply device comprising an air cylinder containing a piston; the piston is driven by the duck body and reciprocates within the air cylinder along its axial direction.

[0012] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device has its air cylinder end extended into the marine infrastructure.

[0013] The end of the air pump that extends into the offshore infrastructure has an oxygen-enriching propeller with a safety net.

[0014] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device has an oxygenation transmission mechanism between the piston and the duck body.

[0015] The oxygenation transmission mechanism includes a crank, a gear, a rack, and a threaded rod with a gear;

[0016] One end of the crank is hinged to the duck's body, and the other end of the crank drives the gear to rotate through an eccentric wheel.

[0017] The gear meshes with the rack; the rotation of the gear drives the rack to move along its length.

[0018] The geared end of the threaded rod meshes with a rack, and the movement of the rack drives the threaded rod to rotate.

[0019] The threaded part of the geared threaded rod is fitted with a threaded sleeve and is threadedly connected to the threaded sleeve. The piston is fixed to the end of the threaded sleeve.

[0020] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device also includes a circular walkway; the circular walkway is relatively fixed to the offshore infrastructure and located above the offshore infrastructure.

[0021] The optimized version of the above-mentioned nodding duck wave energy power generation and oxygenation device has a rotating arm that is hinged to the support tube, and an automatic elevation angle adjustment system for adjusting the angle of the rotating arm between the rotating arm and the support tube.

[0022] The beneficial effects of this application are as follows:

[0023] In the technical solution of this application, the mechanical motion of the wave energy device is used to generate electricity while simultaneously providing oxygen to the net cages, thus making more efficient use of marine space and resources and reducing overall costs. Energy self-sufficiency and stable oxygen supply can improve the production efficiency and reliability of aquaculture and reduce dependence on external energy and oxygen supplies, thereby lowering costs in these areas.

[0024] The technical solution of this application provides a composite structure that integrates a "nodding duck" type WEC (Wave Energy Generation Device) with other equipment. This integration achieves comprehensive utilization of energy resources, enabling the wave energy generation device to provide uninterrupted power to other electronic devices, thus achieving efficient energy utilization and self-sufficiency. Simultaneously, this integration also allows for the sharing of infrastructure and power transmission lines, reducing investment and operating costs, and improving the economic feasibility of the project and the utilization rate of equipment. The advantage of this invention lies in providing a comprehensive solution, bringing new opportunities for sustainable development and integrated utilization of equipment in the energy sector.

[0025] The "nodding duck" type WEC of this application can not only be used for wave energy conversion and power generation, but also provide buoyancy support, serving as a floating structure to support equipment such as aquaculture cages. This combination of power generation and buoyancy functions makes the device have greater application potential in fields such as marine aquaculture. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure in this application without the circular walkway;

[0027] Figure 2 This is a schematic diagram of the structure of this application;

[0028] Figure 3 This is a schematic diagram of the connection structure between the duck body and the energy conversion and power generation device in this application;

[0029] Figure 4 This is a schematic diagram of the connection structure between the duck body and the energy conversion power generation device in this application. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the internal structure of the overall system box of this application;

[0031] Figure 6 This is a schematic diagram of the structure of the wave-concentrating plate of this application;

[0032] Figure 7 This is a schematic diagram of the bidirectional ratchet lever of this application;

[0033] Figure 8 This is a schematic diagram of the Geneva institution of this application. Detailed Implementation

[0034] The technical features of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] The technical solution of this application is a nodding duck wave energy power generation and oxygenation device, including offshore infrastructure, which has several nodding duck power generation devices. In this application, the offshore infrastructure is an offshore net cage aquaculture equipment 9. All the nodding duck power generation devices are evenly spaced around the offshore infrastructure.

[0036] The nodding duck power generation device includes a duck body 1 and an energy conversion system 2. The duck body 1 is connected to the energy input end of the energy conversion system 2. The duck body 1 is connected to an oxygen supply device that supplies oxygen to the offshore infrastructure, and the oxygen supply device is driven by the duck body 1.

[0037] In this embodiment, four individual "nodding duck" type WECs can be arranged around the marine cage, or they can be customized according to power requirements and cage size. The buoyancy of the duck body 1 provides buoyancy to the cage, and the tumbling motion of the duck body 1 drives the piston in the air pipe to compress the air introduced by the air cylinder 3 to drive the oxygenation propeller located at the bottom of the cage, providing functional support for marine aquaculture.

[0038] Each duck body 1 has a rotating shaft at its circular center. When a wave is incident on it, it drives the duck body 1 to rotate around the rotating shaft, while simultaneously generating a zigzag reciprocating motion, which in turn drives the generator to produce electricity. In this embodiment, the technical solution for the duck body 1 to drive the generator to produce electricity can use common technical solutions in the prior art, and will not be described in detail here.

[0039] The energy conversion and power generation device 2 includes an overall system box, inside which a water pressure valve body 12 is installed, and the specific structural arrangement is shown in the figure.

[0040] The power of the overall system box is transmitted through a geared threaded rod 4 to a double-direction ratchet rod 10, and then through a Geneva mechanism 15 to the rotating arm 6. The water inlet 13 and inlet / outlet 14 of the water pressure valve body 12 are located below the system box. The power source for the water pressure valve body is the double-direction ratchet rod 10, which outputs power to the Geneva mechanism 15 via gears to drive its movement. The double-direction ratchet rod 10 consists of two unidirectional ratchet wheels with opposite upper and lower pawls.

[0041] The water pressure valve body 12 includes a water pump, a gear clutch, a one-way pressure regulating valve, a water passage, a connecting piston, and a transmission mechanical rod. The two ends of the connecting piston are connected to the water passage and the inlet / outlet 14 respectively, but they are not interconnected. The upper end is connected to the gear clutch, which is connected to the transmission mechanical rod. At the same time, the water passage is connected to the one-way pressure regulating valve.

[0042] The offshore infrastructure is connected to a support pipe 18, and the duck body 1 has rotating arms 6 on both sides, which are connected to the support pipe 18. The duck body 1 is rotatably connected to the rotating arms 6 via a pivot.

[0043] In this application, each duck body 1 is connected to the support tube 18 of the offshore net cage aquaculture equipment 9 via a pair of rotating arms 6. The connection between the rotating arms 6 and the support tube 18 is hinged. Due to the uncertainty of wave height, the angle of attack of the duck body 1 facing the wave will change, making its angle of attack close to 90°, which will cause the duck body 1 to be unable to generate electricity normally. Therefore, the hinged rotating arms 6 can adjust the overall water entry degree of the duck body 1 to prevent the angle of attack from being too large and affecting normal power generation.

[0044] On each side of the support tube 18, corresponding to each duck body 1, there is an electrical control box for controlling the duck body 1 and other electronic devices. The electrical control box is equipped with a circular walkway for on-site operators to walk and work. The electrical control box is equipped with equipment for monitoring and controlling marine cage aquaculture. The monitoring and control equipment is used to monitor aquaculture environmental parameters such as water quality, temperature, and dissolved oxygen, and to adjust and control them as needed.

[0045] Meanwhile, a device for real-time monitoring of wave conditions is also provided to adjust the rotating arm 6 and the attitude of the duck body 1 in a timely manner. In this embodiment, an automatic elevation angle adjustment system combined with an automatic transmission is considered. This system is also integrated into the electrical control box. The oil in the automatic transmission is replaced with water to reduce the risk of structural failure caused by hydraulic leakage. It is more environmentally friendly and more convenient to replenish. The water circuit is adjusted by adjusting the push rod in the transmission with different water pressures, thereby controlling the elevation angle of the rotating arm in different gears, preventing the angle of attack of the duck body 1 facing the waves from being too large, and improving the stability of power generation.

[0046] After the duck body 1 starts working, the water pump inside the valve body continuously introduces seawater into the internal water passage at a fixed power, creating a certain water pressure in the water passage. When the water pressure in the water passage exceeds the preset range, the one-way pressure regulating valve located at one end of the water passage will be pushed open by the water pressure, allowing water to flow out, thereby stabilizing the water pressure in the water passage within the preset range. The stable water pressure will cause the connecting piston to be pushed to the inlet / outlet 14 section. At this time, the gear clutch is not engaged, the rod of the Geneva mechanism 15 is not working, and the duck body rotating arm does not rotate. As the water level rises, the water pressure inside the inlet and outlet continuously increases until it pushes the connecting piston to a section of the waterway. At this point, the gear clutch engages, and power is transmitted from the geared threaded rod 4 to the double-acting ratchet rod 10. One of the pawls of the one-way ratchet is locked. The double-acting ratchet rod 10 transmits power in one direction to the lever of the Geneva mechanism 15 through the gear clutch. The lever starts to work, the rotating arm rotates, and the water pressure inside the inlet and outlet 14 continuously decreases. The connecting piston will retract to the side of the inlet and outlet 14. At this point, the gear clutch disengages, the rotating arm stops rotating and locks, completing the rotation adjustment. The reverse occurs when the water level drops.

[0047] The oxygen supply device of this application includes an air cylinder 3, which contains a piston. The piston is driven by a duck body 1 and reciprocates within the air cylinder 3 along its axial direction. The end of the air cylinder 3 extends into a marine infrastructure, and an oxygen-enhancing propeller 17 with a safety net is installed inside the end of the air cylinder 3 extending into the marine infrastructure.

[0048] An oxygenation transmission mechanism is provided between the piston and the duck body 1. This mechanism includes a crank 7, a gear 8, a rack 9, and a threaded rod 4 with a gear. One end of the crank 7 is hinged to the duck body 1, and the other end drives the gear 8 to rotate via an eccentric wheel. The gear 8 meshes with the rack 9, and its rotation drives the rack 9 to move along its length. The geared end of the threaded rod 4 meshes with the rack 9, and its movement drives the threaded rod 4 to rotate. A threaded sleeve 5 is threaded onto the threaded portion of the threaded rod 4 and connected to it. The piston is fixed to the end of the threaded sleeve 5.

[0049] In this embodiment, the duck body 1 swings around its center, driving the gear 8 to rotate via a crank 7 hinged to it and an eccentric wheel hinged to the end of the crank 7. Specifically, one end of the crank 7 is hinged to the duck body 1, and the other end is rotatably connected to the eccentric wheel. The shaft of the gear 8 is rotatably connected to the eccentric wheel, and the shaft of the gear 8 is parallel and spaced apart from the shaft of the crank 7 that drives the eccentric wheel. In this way, the swinging motion of the duck body 1 and the crank 7 is converted into forward and reverse rotation of the gear 8. The shaft of the gear 8 is rotatably connected to a bracket, which is fixed relative to the support tube 18. The forward and reverse rotation of gear 8 will drive rack 9, which slides relative to the bracket, to reciprocate and translate, thereby driving the geared threaded rod 4 at the end of rack 9 to rotate. The lower end of the geared threaded rod 4 is fitted with a threaded sleeve 5 that meshes with its threads. When the geared threaded rod 4 rotates, it will drive the threaded sleeve 5 to make vertical translation. A longitudinal sliding limiting mechanism is provided between the threaded sleeve 5 or the piston and the inner wall of the air cylinder 3, so that the piston completes the reciprocating vertical piston movement in the air cylinder 3.

[0050] An oxygenating propeller with a safety net is installed at the end of the air cylinder 3. The safety net is designed to protect the fish in the net cage from damage by the propeller. At the same time, an air intake pipe 11 is connected to the middle of the air cylinder 3. The pipe is equipped with a one-way air valve. When the piston moves upward, the one-way air valve opens to introduce air from the outside. When the piston moves downward, the one-way air valve pushes the introduced air into the net cage and drives the propeller to further increase the oxygenation effect.

[0051] Several wave-gathering plates 16 are connected to the support tube 18. The two adjacent wave-gathering plates 16 are arranged in a V-shape to form a wave-gathering area with an opening. Specifically, the wave-gathering plates 16 can gather waves for the duck body 1, and the V-shaped opening design also prevents the cage from rotating under the action of waves, thus affecting the safety and stability of the device.

[0052] The upper part of the offshore cage aquaculture equipment 9 has a ring-shaped hollow tube surrounding it. A support tube 18 is connected to this ring-shaped hollow tube, transferring the buoyancy of the four ducks 1 to the offshore cage aquaculture equipment 9, thus providing buoyancy. Simultaneously, these hollow tubes not only connect the structure into a whole but also allow for the routing of electronic components within the equipment. The hollow design of these tubes also provides additional buoyancy to the equipment to some extent.

[0053] In this application, the rotating arm 6 used to limit the movement of each duck body 1 can, in conjunction with the principle of an automatic gearbox, sense changes in water pressure in real time according to changes in water level, and adjust the degree of water entry of the duck body 1 according to the water pressure, so as to prevent the problem of failure to generate electricity due to excessive angle of attack of the duck body 1 facing the waves. The multi-angle configuration design aims to maximize the utilization of wave energy at various incident angles.

[0054] The duck body 1 is integrated with the power generation device. Incident waves from various angles propel each duck body 1 in a reciprocating motion of rising and falling, converting wave energy into mechanical energy, which is then converted into electrical energy by the generator. When the duck body 1 is integrated with the oxygenation system, the reciprocating motion of the duck body 1 around its axis drives the piston located below the rotation axis of the duck body 1, converting the pitching motion into the vertical motion of the piston. This forces the air introduced by the air intake pipe 11 to the propeller, thereby driving the propeller to oxygenate the net cage.

[0055] The proposed solution integrates a monitoring and control system: combining a power generation device with a monitoring and control system to achieve monitoring and control of the aquaculture environment. Through sensors and monitoring equipment, parameters such as water quality, temperature, dissolved oxygen, and water level are monitored in real time. The control system adjusts and optimizes the aquaculture environment, while also controlling the rotating arm 6 to maintain the duck's body 1 within a reasonable posture range.

[0056] This solution integrates a multi-functional system for power supply, oxygenation, monitoring, and control.

[0057] Finally, the composite device is connected to aquaculture equipment such as aquaculture cages or net cages through hollow pipes, and connected to the seabed through a mooring system to keep the device in a stable position.

[0058] Four sets of wave-gathering panels 16 are arranged between the four groups of ducks to concentrate waves and improve the power generation efficiency of the ducks. Given the complex and variable seawater conditions, to prevent damage from large waves, each wave-gathering panel 16 is equipped with an angle adjustment mechanism connected by hinges. When excessively large waves are detected, the angle adjustment mechanism is activated, adjusting the wave-gathering panel 16 to an angle approximately parallel to the net cage. Simultaneously, during normal operation, the angle of the wave-gathering panels can be adjusted according to the specific wave size to achieve the optimal wave-gathering effect under the given wave conditions.

[0059] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should be protected by the present invention.

Claims

1. A nodding duck wave energy power generation and oxygenation device, comprising offshore infrastructure, wherein the offshore infrastructure has a plurality of nodding duck power generation devices; characterized in that: The nodding duck power generation device includes a duck body (1) and an energy conversion system (2), with the duck body (1) being connected to the energy input end of the energy conversion system (2) via a transmission connection; The duck body (1) is connected to an oxygen supply device that supplies oxygen to the marine infrastructure, and the oxygen supply device is driven by the duck body (1). The energy conversion system (2) includes a general system box, and a water pressure valve body (12) is installed inside the general system box. The marine infrastructure is connected to a support pipe (18), and the duck body (1) has rotating arms (6) on both sides, which are connected to the support pipe (18); the duck body (1) is rotatably connected to the rotating arms (6) through a rotating shaft. The oxygen supply device includes an air cylinder (3) with a piston inside; the piston is driven by the duck body (1) and reciprocates within the air cylinder (3) along the axial direction of the air cylinder (3); An oxygenation transmission mechanism is provided between the piston and the duck body (1); The oxygenation transmission mechanism includes a crank (7), a gear (8), a rack (9), and a threaded rod with a gear (4). The overall system box is equipped with a two-way ratchet lever (10) and a Geneva mechanism (15); One end of the crank (7) is hinged to the duck body (1), and the other end of the crank (7) drives the gear (8) to rotate through the eccentric wheel; The gear (8) meshes with the rack (9); the rotation of the gear (8) drives the rack (9) to move along the length extension direction of the rack (9); The geared end of the threaded rod (4) meshes with the rack (9), and the movement of the rack (9) drives the threaded rod (4) to rotate. The threaded part of the geared threaded rod (4) is fitted with a threaded sleeve (5) and is threadedly connected to the threaded sleeve (5). The piston is fixed to the end of the threaded sleeve (5). The power of the overall system box is transmitted through the geared threaded rod (4) to drive the double ratchet rod (10), and then through the Geneva mechanism (15) to the rotating arm (6). The water inlet (13) and the inlet / outlet (14) of the water pressure valve body (12) are set at the bottom of the system box; the power source of the water pressure valve body comes from the bidirectional ratchet rod (10), and the power is output to the Geneva mechanism (15) through the gear to drive its movement; The two-way ratchet lever (10) is composed of two unidirectional ratchets with opposite upper and lower pawls; the water pressure valve body (12) contains a water pump, a gear clutch, a one-way pressure regulating valve, a water circuit, a connecting piston, and a transmission mechanical rod.

2. The nodding duck-type wave energy power generation and oxygenation device according to claim 1, characterized in that: The marine infrastructure is marine cage aquaculture equipment (9). All the nodding duck power generation units are evenly spaced around the offshore infrastructure.

3. The nodding duck-type wave energy power generation and oxygenation device according to claim 1, characterized in that: Several wave-concentrating plates (16) are connected to the support tube (18). The two adjacent wave-concentrating plates (16) are arranged in a V-shape and form a wave-concentrating area with an opening.

4. The nodding duck-type wave energy power generation and oxygenation device according to claim 1, characterized in that: The end of the air cylinder (3) extends into the marine infrastructure; The air cylinder (3) has an oxygenation propeller with a safety net at one end that extends into the marine infrastructure.

5. The nodding duck-type wave energy power generation and oxygenation device according to claim 1, characterized in that: It also includes a circular walkway; the circular walkway is fixed relative to and above the marine infrastructure.

6. The nodding duck-type wave energy power generation and oxygenation device according to claim 1, characterized in that: The rotating arm (6) is hinged to the support tube (18), and there is an automatic elevation adjustment system between the rotating arm (6) and the support tube (18) to adjust the angle of the rotating arm (6).

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