Nodding duck type wave power generation oxygenation device

Abstract

The invention discloses a nodding duck type wave energy power generation oxygenation device, belongs to the field of wave energy equipment, and solves the problems that in the prior art, oxygenation of a net cage consumes part of electric energy, and functional equipment such as a bait casting machine, a cleaning machine, a monitoring device and a lighting device required by the net cage is high in power and high in equipment cost. According to the technical scheme, 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 the oxygen supply equipment for supplying oxygen into the offshore infrastructure, the mechanical movement of the wave energy device is used for generating power, meanwhile, the mechanical movement of the wave energy device is used for increasing oxygen and supplying oxygen to the net cage, the ocean space and resources are more efficiently utilized, and therefore the total cost is reduced.

Description

Technical Field

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

[0002] The "nodding duck" WEC is a wave energy harvesting device with a special shape. It consists of a cam that floats on the water surface and moves against each other. The shape and operating characteristics of each cam are similar to the movement of a duck's bill. Its front end is the wave-facing surface, and the rear end is the wave-back surface. It is circular, and its center is located at the rotation axis. The wave dynamic pressure will push the main structure to rotate around the axis, so that the duck body will make a pitching reciprocating motion around the axis, thereby driving the generator to generate electricity. my country's wave energy generation is still a long way from practical application. Since the cost of wave energy generation is higher than other commonly used power generation forms, it is difficult to promote its use. Under the current situation, combining wave energy generation with existing marine facilities can reduce the equipment cost of wave energy generation devices and reduce the cost of electricity. When the oxygen content of seawater decreases, oxygen needs to be added to the cage to increase the oxygen content of the seawater in the cage. The existing oxygenation method is to use diesel generators or solar panels to generate electricity to power the oxygenation pump, and oxygenation is carried out through the work of the oxygenation pump. However, this method will consume some electricity, and the cages also need to be equipped with functional equipment such as lighting, monitoring, and cleaning, which requires high electricity costs. Summary of the invention

[0003] The present invention provides a nodding duck wave energy power generation and oxygenation device, which generates electricity by utilizing the mechanical movement of the wave energy device while also utilizing its mechanical movement to increase oxygen supply for the cage, thereby more efficiently utilizing ocean space and resources, thereby reducing overall costs.

[0004] The technical solution adopted by the present invention is a nodding duck type wave energy power generation and oxygenation device, comprising an offshore infrastructure, wherein the offshore infrastructure has a plurality of nodding duck power generation devices;

[0005] The nodding duck power generation device comprises a duck body and an energy conversion system, wherein the duck body is connected to the energy input end of the energy conversion system by transmission;

[0006] The duck body is connected with an oxygen supply device for supplying oxygen to the offshore infrastructure, and the oxygen supply device is driven by the duck body.

[0007] Optimized, the above-mentioned nodding duck wave energy power generation and oxygenation device, the offshore infrastructure is an offshore cage aquaculture equipment;

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

[0009] Optimized, the above-mentioned nodding duck type wave energy power generation and oxygenation device has an offshore infrastructure connected to a support pipe, and two sides of the duck body are provided with rotating arms, which are connected to the support pipe; the duck body is rotatably connected to the rotating arm through a rotating shaft.

[0010] Optimally, in the nodding duck type wave energy power generation and oxygenation device, a plurality of wave focusing plates are connected to the support pipe, and two adjacent wave focusing plates are arranged in a V shape to form a wave focusing area with an opening.

[0011] Optimally, in the above-mentioned nodding duck type wave energy power generation and oxygenation device, the oxygen supply equipment includes an air cylinder with a piston inside the air cylinder; the piston is driven by the duck body and reciprocates in the air cylinder along the axial direction of the air cylinder.

[0012] Optimally, in the above-mentioned nodding duck type wave energy power generation and oxygenation device, the end of the cylinder extends into the offshore infrastructure;

[0013] One end of the cylinder extending into the offshore infrastructure has an oxygen-enhancing propeller with a safety net.

[0014] Optimally, the above-mentioned nodding duck type wave energy power generation and oxygenation device has an oxygenation transmission mechanism between the piston and the duck body;

[0015] The oxygen enrichment 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 body, and the other end of the crank drives the gear to rotate through the eccentric wheel;

[0017] The gear is meshed with the rack; the rack is driven to move along the length extension direction of the rack by the rotation of the gear;

[0018] One end of the gear-carrying threaded rod is meshed with the rack, and the gear-carrying threaded rod is driven to rotate by the movement of the rack;

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

[0020] Optimally, the nodding duck type wave energy power generation and oxygenation device further comprises a circular walkway; the circular walkway is relatively fixed to the offshore infrastructure and is located above the offshore infrastructure.

[0021] Optimally, in the nodding duck type wave energy power generation and oxygenation device, the rotating arm is hinged to the support tube, and an automatic elevation adjustment system for adjusting the angle of the rotating arm is provided between the rotating arm and the support tube.

[0022] The beneficial effects of this application are:

[0023] In the technical solution of this application, the mechanical movement of the wave energy device is used to generate electricity, and its mechanical movement is also used to increase oxygen supply for the cage, so as to more efficiently utilize the ocean space and resources, thereby reducing the overall cost. The self-sufficiency of energy and the stability of oxygen supply can improve the production efficiency and reliability of aquaculture, and reduce the dependence on external energy and oxygen supply, thereby reducing the cost in this regard.

[0024] The technical solution of the present application provides a composite structure that combines the "nodding duck" type WEC with other equipment. Through this combination, the comprehensive utilization of energy resources is achieved, so that the wave energy power generation device can provide uninterrupted power supply for other electronic devices, and achieve efficient utilization and self-sufficiency of energy. At the same time, this combination can also share infrastructure and power transmission lines, reduce investment and operating costs, and improve the economic feasibility of the project and the utilization rate of equipment. The advantage of the present invention is that it provides a comprehensive solution, which brings new opportunities for sustainable development and integrated utilization of equipment in the energy field.

[0025] The "nodding duck" WEC of the present application can not only be used for wave energy conversion and power generation, but also provide buoyancy support, as a floating structure to provide support for aquaculture cages and other equipment. This feature of combining power generation and buoyancy makes the device have more application potential in fields such as offshore aquaculture. BRIEF DESCRIPTION OF THE DRAWINGS

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

[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 power generation device in this application;

[0029] Figure 4 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-gathering plate of the present application;

[0032] Figure 7 It is a schematic structural diagram of the bidirectional ratchet lever of the present application;

[0033] Figure 8 This is a schematic diagram of the structure of the Geneva institution for this application. DETAILED DESCRIPTION

[0034] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

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

[0036] The nodding duck power generation device comprises a duck body 1 and an energy conversion system 2, wherein the duck body 1 is transmission-connected to an energy input end of the energy conversion system 2. The duck body 1 is connected to an oxygen supply device for supplying oxygen to offshore infrastructure, and the oxygen supply device is driven by the duck body 1.

[0037] In this embodiment, four single "nodding duck" type WECs are arranged around the marine cage and can be arranged according to the power requirements and the size of the cage. The buoyancy of the duck body 1 is used to provide buoyancy for the cage. At the same time, the pitching 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 oxygen-enhancing propeller at the bottom of the cage, thereby providing functional support for marine aquaculture.

[0038] Each duck body 1 is provided with a rotating shaft at the circular center. After the wave is incident, the duck body 1 is driven to rotate around the rotating shaft, and the duck body 1 generates a pitching reciprocating motion, thereby driving the generator to generate electricity. In this embodiment, the technical solution of the duck body 1 driving the generator to generate electricity can use the common technical solution in the prior art, which will not be repeated here.

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

[0040] The power of the overall system box is transmitted through the gear threaded rod 4 to drive the two-way ratchet rod 10, and is transmitted to the rotating arm 6 through the Geneva mechanism 15. The water inlet 13 and the water inlet and outlet 14 of the hydraulic valve body 12 are set below the system box. The power source of the hydraulic valve body comes from the two-way ratchet rod 10, and the power is output to the Geneva mechanism 15 through the gear to drive its movement. The two-way ratchet 10 is composed of two one-way ratchets with opposite upper and lower pawls.

[0041] The hydraulic valve body 12 includes a water pump, a gear clutch, a one-way pressure-stabilizing valve, a water circuit, a connecting piston and a transmission mechanical rod. The two ends of the connecting piston are respectively connected to the water circuit and the water inlet and outlet 14 but not mutually connected, and the upper end is connected to the gear clutch, which is connected to the transmission mechanical rod, and the water circuit is connected to the one-way pressure-stabilizing valve.

[0042] The offshore infrastructure is connected with a support pipe 18, and the duck body 1 has a rotating arm 6 on both sides, and the rotating arm 6 is connected to the support pipe 18. The duck body 1 is rotatably connected to the rotating arm 6 through a rotating shaft.

[0043] In the present application, each duck body 1 is connected to the support tube 18 of the offshore cage farming equipment 9 through a pair of rotating arms 6, wherein the connection between the rotating arm 6 and the support tube 18 is hinged. Due to the uncertainty of wave height, the angle of attack of the wave-facing surface of the duck body 1 will change, making its angle of attack close to 90°, resulting in the duck body 1 being unable to generate electricity normally. For this reason, the hinged rotating arm 6 can adjust the overall degree of entry of the duck body 1 into the water to prevent the normal power generation from being affected by excessive angle of attack.

[0044] An electric control box for controlling the duck body 1 and other electronic devices is provided at each side of the support tube 18 corresponding to each duck body 1, and a circular walkway is provided on the electric control box for on-site operators to walk and work. The electric control box is provided with equipment that can be used for monitoring and controlling the aquaculture of sea cages. The monitoring and control equipment is used to monitor the aquaculture environment parameters such as water quality, temperature, dissolved oxygen content, and adjust and control as needed.

[0045] At the same time, a device for real-time monitoring of the wave status is also provided to timely adjust the rotating arm 6 and the posture of the duck body 1. In this embodiment, an automatic adjustment system for the elevation angle combined with an automatic transmission is considered. The system is also integrated in the electronic control box. The oil in the automatic transmission is replaced by water to reduce the risk of structural failure caused by hydraulic leakage, which is more environmentally friendly and more convenient to replenish. The waterway is adjusted by adjusting the top rod in the transmission through different water pressures to control the elevation angle of the rotating arm in different gears, thereby preventing the angle of attack of the wave-facing surface of the duck body 1 from being too large and improving the stability of power generation.

[0046] After the duck body 1 starts working, the water pump in the valve body continuously introduces seawater into the waterway inside the valve body at a fixed power, so that a certain water pressure is generated in the waterway. When the water pressure in the waterway exceeds the preset range, the one-way pressure-stabilizing valve set at one end of the waterway will be pushed open at the top under the action of the water pressure, allowing the water to flow out, thereby stabilizing the water pressure in the waterway within the preset range. The stable water pressure will cause the connection piston to be pushed to the inlet and outlet 14. At this time, the gear clutch has not been connected, the Geneva mechanism rod does not work, and the duck body rotating arm does not rotate. As the water level rises, the water pressure inside the water inlet and outlet will continue to increase until the connection piston is pushed to a section of the water channel. At this time, the gear clutch is connected, and the power is transmitted from the gear threaded rod 4 to the two-way ratchet rod 10, and the pawl of one of the one-way ratchets is locked. The ratchet rod 10 transmits the power to the Geneva mechanism rod 15 through the gear clutch in one direction. The rod starts to work, the rotating arm rotates, the water pressure in the water inlet and outlet 14 will continue to decrease, and the connection piston will return to one side of the water inlet and outlet 14 in the opposite direction. At this time, the gear clutch is disconnected, the rotating arm stops rotating and locks, and the rotation adjustment is completed. When the water level drops, the opposite is true.

[0047] The oxygen supply device of the present application comprises an air cylinder 3, and a piston is provided in the air cylinder 3. The piston is driven by the duck body 1 and reciprocates in the air cylinder 3 along the axis direction of the air cylinder 3. The end of the air cylinder 3 extends into the offshore infrastructure, and an oxygen-enhancing propeller 17 with a safety net is installed inside one end of the air cylinder 3 extending into the offshore infrastructure.

[0048] An oxygenation transmission mechanism is provided between the piston and the duck body 1, and the oxygenation transmission mechanism includes a crank 7, a gear 8, a rack 9, and a gear threaded rod 4. 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 an eccentric wheel. The gear 8 is meshed with the rack 9, and the rack 9 is driven to move along the length extension direction of the rack 9 through the rotation of the gear 8. One end of the gear threaded rod 4 with a gear is meshed with the rack 9, and the gear threaded rod 4 is driven to rotate through the movement of the rack 9. The threaded portion of the gear threaded rod 4 is sleeved with a threaded sleeve 5 and is threadedly connected with the threaded sleeve 5, and the piston is fixed to the end of the threaded sleeve 5.

[0049] In this embodiment, the duck body 1 swings around its center, and the gear 8 is driven to rotate through the crank 7 hinged thereto and the eccentric wheel hinged at 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, and the rotating shaft of the gear 8 is rotatably connected to the eccentric wheel, and the rotating shaft of the gear 8 is parallel and spaced apart from the rotating shaft of the eccentric wheel driven by the crank 7. In this way, the swing of the duck body 1 and the crank 7 is converted into the forward and reverse rotation of the gear 8, and the rotating shaft of the gear 8 is rotatably connected to a bracket, and the bracket is relatively fixed to the bracket tube 18. The positive and negative rotation of the gear 8 will drive the rack 9 that slides relative to the bracket to make reciprocating translational motion, and then drive the gear threaded rod 4 located at the end of the rack 9 to rotate. The lower end of the gear threaded rod 4 is covered with a threaded sleeve 5 that meshes with its thread. When the gear threaded rod 4 rotates, it will drive the threaded sleeve 5 to make vertical translational motion. A longitudinally sliding limiting mechanism is provided between the threaded sleeve 5 or the piston and the inner wall of the cylinder 3, so that the piston completes the reciprocating vertical motion of the piston in the cylinder 3.

[0050] An oxygenation propeller with a safety net is provided at the end of the cylinder 3. The safety net is provided to protect the fish in the net cage from being damaged by the propeller. At the same time, an air bleed pipe 11 is connected to the middle of the cylinder 3, and a one-way air valve is provided inside the air bleed pipe. 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] A plurality of wave-gathering plates 16 are connected to the support tube 18, and 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, which affects the safety and stability of the device.

[0052] The upper part of the offshore cage aquaculture equipment 9 has an annular hollow tube arranged around it, and the support tube 18 is connected to the annular hollow tube, which transfers the buoyancy of the four duck bodies 1 to the offshore cage aquaculture equipment 9, providing buoyancy for the offshore cage aquaculture equipment 9. At the same time, these hollow tubes can connect the structure into a whole, and at the same time, the electronic devices of the entire device can be routed inside them. These pipes are set to be hollow and can also provide additional buoyancy for the equipment to a certain extent.

[0053] In the present application, the rotating arm 6 used to limit each duck body 1 can sense the water pressure change in time according to the change of water level in combination with the principle of automatic transmission, and adjust the degree of entry of the duck body 1 into the water at any time according to the water pressure, so as to prevent the problem of failure to generate electricity normally due to excessive angle of attack of the wave-facing surface of the duck body 1. The multi-angle configuration design is intended to maximize the use of wave energy at various incident angles.

[0054] The duck body 1 is combined with a power generation device, and incident waves at various angles drive each duck body 1 to perform a reciprocating motion of heave and sink, converting wave energy into mechanical energy, and then into electrical energy by the generator. The duck body 1 is combined with an oxygenation system, and the reciprocating motion of the duck body 1 rotating around the axis drives the piston located below the rotating axis of the duck body 1, converting the pitching motion into the vertical motion of the piston, and compressing the air introduced by the air duct 11 to the propeller, thereby driving the propeller to oxygenate the cage.

[0055] The solution of the present application is combined with a monitoring and control system: the power generation device is combined with a monitoring and control system to realize the monitoring and control of the breeding environment. Through sensors and monitoring equipment, water quality, temperature, dissolved oxygen content, water level and other parameters are monitored in real time, and the breeding environment is adjusted and optimized through the control system. At the same time, the rotating arm 6 can also be controlled to keep the duck body 1 in a reasonable posture range.

[0056] The solution integrates multifunctional systems of power supply, oxygen enrichment, monitoring and control.

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

[0058] Four groups of wave-gathering plates 16 are arranged in the middle of four groups of duck bodies, which play a wave-gathering effect, thereby improving the duck body's power generation efficiency. Due to the complex and changeable seawater conditions, to prevent the wave-gathering plates 16 from being damaged by large waves, an angle adjustment mechanism is set behind each wave-gathering plate, and the connection method is hinged. When the wave is detected to be too large, the angle adjustment mechanism is activated to adjust the wave-gathering plate 16 to an angle that is basically parallel to the cage. At the same time, during normal work, the angle of the wave-gathering plate can also be adjusted according to the specific size of the wave, so as to achieve the best wave-gathering effect under the wave conditions at that time.

[0059] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A nodding duck wave energy power generation and oxygenation device, comprising an offshore infrastructure, wherein the offshore infrastructure has a plurality of nodding duck power generation devices; characterized in that: The nodding duck power generation device comprises a duck body (1) and an energy conversion system (2), wherein the duck body (1) is transmission-connected to an energy input end of the energy conversion system (2); The duck body (1) is connected to an oxygen supply device for supplying oxygen to offshore infrastructure, and the oxygen supply device is driven by the duck body (1).

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

3. The nodding duck wave energy power generation and oxygenation device according to claim 1 is characterized in that: The offshore infrastructure is connected to a support pipe (18), and both sides of the duck body (1) are provided with rotating arms (6), and the rotating arms (6) are connected to the support pipe (18); the duck body (1) is rotatably connected to the rotating arms (6) via a rotating shaft.

4. The nodding duck wave energy power generation and oxygenation device according to claim 3 is characterized by: A plurality of wave-gathering plates (16) are connected to the support tube (18), and two adjacent wave-gathering plates (16) are arranged in a V shape to enclose a wave-gathering area with an opening.

5. The nodding duck wave energy power generation and oxygenation device according to claim 1 is characterized in that: The oxygen supply device comprises an air cylinder (3) having a piston inside the air cylinder (3); the piston is driven by the duck body (1) and reciprocates inside the air cylinder (3) along the axial direction of the air cylinder (3).

6. The nodding duck wave energy power generation and oxygenation device according to claim 5 is characterized in that: The end of the gas cylinder (3) extends into the offshore infrastructure; One end of the cylinder (3) extending into the offshore infrastructure has an oxygen-enhancing propeller with a safety net.

7. The nodding duck wave energy power generation and oxygenation device according to claim 5 is characterized in that: An oxygen-increasing transmission mechanism is provided between the piston and the duck body (1); The oxygen enrichment transmission mechanism comprises a crank (7), a gear (8), a rack (9), and a threaded rod with a gear (4); 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 via an eccentric wheel; The gear (8) is meshed with the rack (9); the gear (8) is rotated to drive the rack (9) to move along the length extension direction of the rack (9); One end of the gear-carrying threaded rod (4) is meshed with the rack (9), and the gear-carrying threaded rod (4) is driven to rotate by the movement of the rack (9); The threaded portion of the gear threaded rod (4) is sleeved with a threaded sleeve (5) and threadedly connected to the threaded sleeve (5), and the piston is fixed to the end of the threaded sleeve (5).

8. The nodding duck wave energy power generation and oxygenation device according to claim 1 is characterized by: It also includes a circular walkway; the circular walkway is fixed relative to the offshore infrastructure and is located above the offshore infrastructure.

9. The nodding duck wave energy power generation and oxygenation device according to claim 3 is characterized by: The rotating arm (6) is hinged to the support tube (18), and an automatic elevation adjustment system for adjusting the angle of the rotating arm (6) is provided between the rotating arm (6) and the support tube (18).

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