A device for combined water pumping and overtopping wave energy power generation

Abstract

The present invention relates to the technical field of wave power generation. Specifically, it relates to a device for combined water pumping and overtopping wave energy power generation, which includes a support platform, a plurality of water pumping mechanisms, a power generation system, and an anchor cable structure; the support platform includes a water guiding structure and a floating body structure. A water collecting pool is provided in the middle of the water guiding structure, and a cavity is provided inside the floating body structure; the power generation system is arranged in the cavity, and the power generation system includes a water inlet pipe, a power generation structure, and a power module; each water pumping mechanism is circumferentially distributed around the water collecting pool, and the water pumping mechanism includes a float and a water pumping structure; one end of the anchor cable structure is fixedly connected to the floating body structure; compared with the prior art overtopping wave power generation device, this device has the function of water pumping power generation for medium and small waves, and at the same time cooperates with overtopping power generation for large waves, improving the utilization rate of wave power generation.

Description

Technical Field

[0001] The present invention relates to the technical field of wave power generation, and more particularly, to a device for combined water pumping and overtopping wave energy power generation. Background Art

[0002] Seawater in the ocean is in a fluctuating state most of the time and has huge energy. Wave energy power generation devices are important equipment for humans to extract wave energy. According to different working principles, they can be divided into three categories: oscillating buoy type, oscillating water column type, and overtopping type.

[0003] The invention patent with application number 201010575362.5 discloses an overtopping wave power generation device. Among them, a water turbine and a generator are arranged vertically through a transmission mechanism. The water turbine is located below the generator. After the wave enters the reservoir, it enters the water outlet pipe through the water outlet, and the water flow hits the blades of the curved vane water turbine from top to bottom. Under the action of the water flow impact force, the blades rotate around the rotating shaft, thereby converting the potential energy of the water flow into the kinetic energy of the blades. Its defect is that due to the certain slope of the wave guiding plate of the device, only waves with a wave height reaching a certain value can climb onto the wave guiding plate and enter the collecting pool of the wave energy device, and then wave energy power generation can be realized. However, the wave height of waves in the actual ocean changes randomly. According to wave statistical data, the waves in the ocean are mainly medium and small amplitude waves. Therefore, the devices of the prior art have low utilization rate for medium and small amplitude waves. Summary of the Invention

[0004] To solve the above problems, the present invention provides a device for combined water pumping and overtopping wave energy power generation with high utilization rate.

[0005] A device for combined water pumping and overtopping wave energy power generation includes a support platform, a plurality of water pumping mechanisms, a power generation system, and an anchor cable structure.

[0006] The support platform includes a water guiding structure and a floating body structure. The water guiding structure is fixedly connected to the upper end of the floating body structure. A collecting pool is provided in the middle of the water guiding structure, and a cavity is provided inside the floating body structure.

[0007] The power generation system is arranged in the cavity. The power generation system includes a water inlet pipe, a power generation structure, and a power module. One end of the water inlet pipe is connected to the bottom of the collecting pool and is communicated with the collecting pool, and is used for collecting the seawater entering the collecting pool and flowing into the water inlet pipe. The other end of the water inlet pipe is communicated with the power generation structure. The power generation structure is used for converting the potential energy of the seawater flowing into the water inlet pipe into electric energy. The power module is electrically connected to the power generation structure and is used for preprocessing and externally transmitting the electric energy.

[0008] Each of the water pumping mechanisms is circumferentially distributed around the catchment pool. The water pumping mechanism includes a float and a pumping structure. The float is arranged on the sea surface, and the waves drive the float to float up and down. The up and down floating of the float drives the pumping structure to work, so that the pumping structure pumps the seawater below the water guiding structure into the catchment pool;

[0009] One end of the anchor cable structure is fixedly connected to the floating structure for fixing the position of the device.

[0010] Advantages and beneficial effects of the device of the present invention: The anchor cable structure is used to fix the floating structure, so that the device can be fixed at a preset position on the sea; when the waves are large, the seawater will enter the catchment pool along the water guiding structure, and at the same time the waves will also drive the float to float up and down. The floating of the float will drive the pumping structure to pump water. After the seawater pumped by the pumping structure and the seawater entering the catchment pool along the water guiding structure are gathered together, they will flow into the water inlet pipe together to drive the power generation structure to generate electricity and output through the power module for pretreatment. Compared with the overtopping wave power generation device of the prior art, the device of the present application can not only obtain seawater from the water guiding structure but also obtain seawater from each water pumping mechanism, increasing the amount of seawater in the catchment pool, enabling the water inlet pipe to obtain more seawater, increasing the power generation efficiency, and having higher utilization rate; at the same time, when the waves are small, that is, the seawater cannot enter the catchment pool from the water guiding structure, but the waves will still drive the float to float up or down. The up or down floating of the float will cause the pumping structure to pump the seawater into the catchment pool and then enter the water inlet pipe for power generation. Compared with the overtopping wave power generation device of the prior art, the device has the function of pumping water and generating electricity with small waves, improving the utilization rate of wave power generation.

[0011] Preferably, the pumping structure includes a transmission mechanism, a pumping well, and a valve control structure. The middle of the transmission mechanism is rotatably connected to the water guiding structure. One end of the transmission mechanism is rotatably connected to the float, and the other end is rotatably connected to the valve control structure. The pumping well is vertically arranged and fixedly connected to the sump for communicating the sump and the space below the floating body structure. The valve control structure is movably connected in the pumping well. The seawater drives the float to float, and drives the valve control structure to move in the pumping well through the transmission mechanism, so as to drain the seawater below the valve control structure into the sump. With such a setting, the sea waves will drive the float to float up or down. The up or down floating of the float will cause the valve control structure at the other end of the transmission mechanism to move down or up in the pumping well. When the valve control structure moves down, the valve of the valve control structure opens to introduce seawater above the valve control structure. When the valve control structure moves up, the valve closes, and the seawater introduced above the valve control structure will rise along the valve control structure until it is discharged from the pumping well. After converging with the seawater flowing into the sump along the water guiding structure, they flow into the water inlet pipe together to drive the power generation structure to generate electricity. The structure of this pumping structure is simple and the pumping efficiency is high.

[0012] Preferably, a drain pipe is provided at the upper part of the pumping well, and the drain outlet of the drain pipe is located above the sump. With such a setting, the horizontal height of the drain outlet of the drain pipe is lower than that of the drain outlet of the pumping well. When the impact of the sea waves is very small, the amount of seawater extracted by the valve control structure is not enough to reach the drain outlet of the pumping well. Although the horizontal height of the drain outlet of the drain pipe is lower, it is still higher than the sump. Therefore, the seawater can be discharged into the sump through the drain outlet of the drain pipe, improving the utilization rate of the device.

[0013] Preferably, the valve control structure includes a first valve body. The first valve body is slidably fitted in the pumping well. The first valve body is a one-way valve structure for the seawater in the pumping well to flow upward to the upper part of the first valve body. With such a setting, the first valve body of the one-way valve structure can prevent the seawater from flowing back when being extracted, ensuring the pumping efficiency of the pumping structure.

[0014] Preferably, the valve control structure further includes a push rod. A first through hole is provided on the first valve body. The upper end of the first valve body is rotatably connected with a first flap structure. One end of the push rod is rotatably connected to the first flap structure. The first flap structure is for the seawater in the pumping well to flow upward through the first through hole. With such a setting, the push rod can drive the first valve body to move up and down in the pumping well. At the same time, due to the first flap structure, the seawater can only flow upward through the first through hole, and the seawater will not flow downward when the first valve body is lifted, improving the pumping efficiency of the water pumping mechanism.

[0015] Preferably, the first flip structure includes a first rotating shaft sleeve, a first swing rod, a first valve cover, and a first limiting frame, and a shaft bracket is further provided at the upper end of the first valve body;

[0016] The first rotating shaft sleeve is fixedly connected to the upper end of the first valve body;

[0017] One end of the first swing rod is rotatably connected to the first rotating shaft sleeve, and the other end is fixedly connected to the first valve cover. The seawater in the water extraction well drives the first valve cover to flip up or down to open or close the first through hole;

[0018] The outer diameter of the first valve cover is greater than or equal to the aperture of the first through hole;

[0019] The first limiting frame is fixedly connected to the upper end of the first valve body and is located between the first rotating shaft sleeve and the first valve cover, and is used to limit the first flipping angle of the first swing rod so that the first flipping angle is controlled within the preset first flipping angle;

[0020] The upper end of the shaft bracket is rotatably connected to one end of the push rod. With this setting, since the first valve cover is rotatably connected to the upper end of the first valve body through the first swing rod, when the first valve body moves downward, the seawater will push open the first valve cover and enter the upper part of the first valve body through the first through hole. When the first valve body moves upward, due to the first limiting frame, the lifting angle of the swing rod is limited. During the process of lifting the first valve body, the seawater entering the upper part of the first valve body will press the first valve cover to make the first valve cover close to prevent seawater from flowing back. This structure is simple, and the pumping process does not require additional electric control or manual interference, improving the pumping efficiency while reducing the cost.

[0021] Preferably, the water extraction mechanism further includes a second valve body, the second valve body is fixedly connected in the water extraction well and is located below the first valve body. A second through hole is provided on the second valve body, and a second flip structure is provided at the upper end of the second valve body. The second flip structure is used for the seawater in the water extraction well to flow upward through the second through hole. With this setting, since the second valve body is provided below the first valve body and the second valve body is fixed in the water extraction well, during the process of the first valve body moving downward, the first valve body will press the seawater between the first valve body and the second valve body, increasing the amount of seawater entering the upper part of the first valve body through water pressure. At the same time, during the process of the first valve body lifting, the seawater below the second valve body will be introduced between the first valve body and the second valve body to prepare for the next pumping of the first valve body. Therefore, the setting of the second valve body improves the pumping efficiency.

[0022] Preferably, the second flip structure includes a second rotating shaft sleeve, a second swing rod, a second valve cover, and a second limiting frame;

[0023] The second rotating shaft sleeve is fixedly connected to the upper end of the second valve body;

[0024] One end of the second swing rod is rotatably connected to the second rotating shaft sleeve, and the other end is fixedly connected to the second valve cover. The seawater in the pumping well drives the second valve cover to flip up or down to open or close the second through hole;

[0025] The outer diameter of the second valve cover is greater than or equal to the aperture of the second through hole;

[0026] The second limiting frame is fixedly connected to the upper end of the second valve body and is located between the second rotating shaft sleeve and the second valve cover, and is used to limit the second flipping angle of the second swing rod so that the second flipping angle is controlled within the preset second flipping angle. With such a setting, since the second valve cover is rotatably connected to the upper end of the second valve body through the second swing rod, when the first valve body moves downward, the second valve cover will close. At this time, the seawater will press against the upper end of the second valve body to form a certain water pressure. When the first valve body moves downward, the first valve cover will open. At the same time, under the action of the water pressure, the seawater between the first valve body and the second valve body will enter above the first valve body faster, increasing the amount of seawater entering above the first valve body. During the process of lifting the first valve body, the seawater entering above the first valve body will press the first valve cover to make the first valve cover close to prevent the seawater from flowing back downward during the lifting process. At this time, the water pressure between the first valve body and the second valve body will be less than the water pressure of the seawater below the second valve body. Therefore, the seawater below the second valve body will push open the second valve cover and enter between the first valve body and the second valve body to prepare for the next pumping of the first valve body. The structure of the second valve body is simple, and no electric control or other human interference is required during the pumping process, further improving the pumping efficiency.

[0027] Preferably, the transmission mechanism includes a connecting rod and a fixing structure. One end of the connecting rod is rotatably connected to the float, the other end is rotatably connected to the other end of the push rod, the middle part of the connecting rod is rotatably connected to the fixing structure, and the fixing structure is fixedly connected to the water guiding structure. With such a setting, the fixing structure can raise the height of the transmission mechanism, increase the moving distance of the valve control structure in the pumping well, increase the pumping volume, and improve the pumping efficiency.

[0028] Preferably, a plurality of vertically penetrating notches are provided in the lower part of the water guiding structure, and the notches are circumferentially distributed around the water guiding structure. The float is movably connected at the notches. With such a setting, the setting of the notches enables the float to only float up and down, restricting the movement of the float along its own axial direction, and can improve the pumping efficiency of the water pumping mechanism. Description of the Drawings

[0029] Figure 1Isometric view of the device of the present invention;

[0030] Figure 2 Cross-sectional view of the device of the present invention;

[0031] Figure 3 Isometric schematic view of the water guiding structure of the present invention;

[0032] Figure 4 Isometric schematic view of the water pumping mechanism of the present invention;

[0033] Figure 5 Isometric schematic view of the first valve body of the present invention;

[0034] Figure 6 Isometric schematic view of the second valve body of the present invention.

[0035] 1. Support platform; 2. Water pumping mechanism; 3. Anchor cable structure; 4. Sump; 5. Inlet pipe; 6. First through hole; 7. First flap structure; 8. Second through hole; 9. Second flap structure; 10. Drain pipe; 11. Notch; 12. Groove; 13. Shaft bracket; 1.1. Water guiding structure; 1.2. Floating structure; 2.1. Float; 2.2. Transmission mechanism; 2.21. Connecting rod; 2.22. Fixed structure; 2.3. Pumping well; 2.4. Valve control structure; 2.5. Second valve body; 3.1. Mooring line; 3.2. Pile foundation; 2.41. Push rod; 2.42. First valve body; 7.1. First rotating shaft sleeve; 7.2. First swing rod; 7.3. First valve cover; 7.4. First limiting frame; 9.1. Second rotating shaft sleeve; 9.2. Second swing rod; 9.3. Second valve cover; 9.4. Second limiting frame. Detailed implementation manners

[0036] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] Combined with Figure 1 、 Figure 2 And Figure 3 As shown, a device for combined water pumping and overtopping wave energy power generation includes a support platform 1, a plurality of water pumping mechanisms 2, a power generation system, and an anchor cable structure 3;

[0038] The support platform 1 includes a water guiding structure 1.1 and a floating structure 1.2. The water guiding structure 1.1 is fixedly connected to the upper end of the floating structure 1.2. A sump 4 is provided in the middle of the water guiding structure 1.1, and a cavity is provided inside the floating structure 1.2;

[0039] The power generation system is arranged in the cavity. The power generation system includes a water inlet pipe 5, a power generation structure, and a power module. One end of the water inlet pipe 5 is connected to the bottom of the collecting pool 4 and is in communication with the collecting pool 4, and is used for collecting the seawater entering the collecting pool 4 and flowing into the water inlet pipe 5. The other end of the water inlet pipe 5 is in communication with the power generation structure. The power generation structure is used for converting the potential energy of the seawater flowing into the water inlet pipe 5 into electric energy. The power module is electrically connected to the power generation structure and is used for preprocessing the electric energy and outputting it externally;

[0040] Each water pumping mechanism 2 is circumferentially distributed around the collecting pool 4. The water pumping mechanism 2 includes a float 2.1 and a water pumping structure. The float 2.1 is arranged on the sea surface. The waves drive the float 2.1 to float up and down. The up and down floating of the float 2.1 drives the water pumping structure to work, so that the water pumping structure pumps the seawater below the water guiding structure 1.1 into the collecting pool 4;

[0041] One end of the anchor cable structure 3 is fixedly connected to the floating body structure 1.2 and is used for fixing the position of the device.

[0042] Specifically, the anchor cable structure 3 is used for fixing the floating body structure 1.2 so that the device can be fixed at a preset position on the sea. When the waves are large, the seawater will enter the collecting pool 4 along the water guiding structure 1.1. At the same time, the waves will also drive the float 2.1 to float up and down. The floating of the float 2.1 will drive the water pumping structure to pump water. The seawater pumped by the water pumping structure and the seawater entering the collecting pool 4 along the water guiding structure 1.1 are gathered together and then flow into the water inlet pipe 5 together to drive the power generation structure to generate electricity and output it through the preprocessing of the power module. Compared with the overtopping wave power generation device of the prior art, the device of the present application can not only obtain seawater from the water guiding structure 1.1 but also obtain seawater from each water pumping mechanism 2, increasing the amount of seawater in the collecting pool 4, enabling the water inlet pipe 5 to obtain more seawater, increasing the power generation efficiency, and having higher utilization rate. At the same time, when the waves are small, that is, the seawater cannot enter the collecting pool 4 from the water guiding structure 1.1, but the waves will still drive the float 2.1 to float up or down. The up or down floating of the float 2.1 will cause the water pumping structure to pump the seawater into the collecting pool 4 and then enter the water inlet pipe 5 for power generation. Compared with the overtopping wave power generation device of the prior art, the present device has the function of pumping water and generating electricity with small waves, improving the utilization rate of wave power generation.

[0043] Preferably, the water guiding structure 1.1 is an inclined surface frustum cone. The inclined surface frustum cone can facilitate the entry of seawater. A water pumping mechanism 2 is provided around it. The water collecting pool 4 collects the water flowing out of the water pumping mechanism 2, and the lowest point of the water collecting pool 4 is connected to the power generation system; the floating body structure 1.2 at the lower end of the water guiding structure 1.1 is cylindrical and has a cavity structure, providing buoyancy support for the entire device; the float 2.1 captures wave energy and converts it into its own kinetic energy, obtaining vertical movement and moving upward. As the float 2.1 rises, its kinetic energy is converted into its own gravitational potential energy; when the float 2.1 is at the position with the maximum gravitational potential energy, under the action of its gravity, the float 2.1 will fall back to the sea surface. At this time, the float 2.1 drives the valve control structure 2.4 to pump water through the transmission mechanism 2.2. When the seawater reaches or is higher than the drainage outlet of the water pumping well 2.3, the seawater will flow into the water collecting pool 4; the power generation structure mainly includes an impeller and a generator. The power generation structure is located at the bottom of the water collecting pool 4. The seawater in the water collecting pool 4 drives the impeller to rotate and drives the generator to generate electricity; the power module is used to preprocess the electric energy and output it externally.

[0044] Preferably, the number of the floats 2.1 can be designed to be more than 3 according to actual needs. The preferred number of the floats 2.1 in the present invention is 7; the floating body structure 1.2 can be replaced by one of a truss, a jacket structure or a tension leg structure. The preferred one in the present invention is cylindrical; the transmission mechanism 2.2 and the water pumping well 2.3 can be replaced by a syringe type water pumping structure or a runner waterwheel type structure to introduce the water flow into the water collecting pool 4.

[0045] Combined with Figure 4As shown, in order to further optimize the above scheme, the pumping structure includes a transmission mechanism 2.2, a pumping well 2.3 and a valve-controlled structure 2.4. The middle part of the transmission mechanism 2.2 is rotatably connected to the water-conducting structure 1.1, one end of the transmission mechanism 2.2 is rotatably connected to the float 2.1, and the other end is rotatably connected to the valve-controlled structure 2.4. The pumping well 2.3 is vertically arranged, and the pumping well 2.3 is fixedly connected to the water collecting tank 4, and is used to connect the water collecting tank 4 and the space below the floating structure 1.2. The valve-controlled structure 2.4 is movably connected in the pumping well 2.3. The seawater drives the float 2.1 to float, and drives the valve-controlled structure 2.4 to move in the pumping well 2.3 through the transmission mechanism 2.2, so as to discharge the seawater below the valve-controlled structure 2.4 into the water collecting tank 4. With such arrangement, the waves will drive the float 2.1 to float upward or downward, and the upward or downward floating of the float 2.1 will cause the valve control structure 2.4 at the other end of the transmission mechanism 2.2 to move downward or upward in the pumping well 2.3. When the valve control structure 2.4 moves downward, the valve of the valve control structure 2.4 opens to introduce seawater into the top of the valve control structure 2.4. When the valve control structure 2.4 moves upward, the valve closes, and the seawater introduced into the top of the valve control structure 2.4 will be lifted upward along the valve control structure 2.4 until it is discharged from the pumping well 2.3, and after being combined with the seawater that enters the water collecting tank 4 along the water guiding structure 1.1, they will flow into the water inlet pipe 5 together to drive the power generation structure to generate electricity. The pumping structure has a simple structure and high pumping efficiency.

[0046] In order to further optimize the above solution, a drainage pipe 10 is provided at the upper part of the pumping well 2.3, and the drainage outlet of the drainage pipe 10 is located above the water collection tank 4.

[0047] Specifically, the horizontal height of the drain outlet of the drain pipe 10 is lower than the horizontal height of the drain outlet of the pumping well 2.3. When the impact of the waves is very small, the amount of seawater extracted by the valve control structure 2.4 is not enough to reach the drain outlet of the pumping well 2.3. The horizontal height of the drain outlet of the drain pipe 10 is relatively low, but still higher than the collection tank 4. Therefore, the seawater can be discharged to the collection tank 4 through the drain outlet of the drain pipe 10, thereby improving the utilization rate of the device.

[0048] To further optimize the above solution, the valve control structure 2.4 includes a first valve body 2.42, which is slidably fitted in the pumping well 2.3. The first valve body 2.42 is a one-way valve structure, which is used for the seawater in the pumping well 2.3 to flow from bottom to top to the top of the first valve body 2.42.

[0049] Specifically, the first valve body 2.42 of the one-way valve structure can prevent the backflow of seawater when it is pumped, thereby ensuring the pumping efficiency of the pumping structure.

[0050] To further optimize the above solution, the valve control structure 2.4 further includes a push rod 2.41. A first through hole 6 is provided on the first valve body 2.42. A first flip structure 7 is rotatably connected to the upper end of the first valve body 2.42. One end of the push rod 2.41 is rotatably connected to the first flip structure 7. The first flip structure 7 is used for the seawater in the pumping well 2.3 to flow upward through the first through hole 6 from bottom to top.

[0051] Specifically, the push rod 2.41 can drive the first valve body 2.42 to move up and down in the pumping well 2.3. At the same time, due to the provision of the first flip structure 7, the seawater can only flow upward through the first through hole 6, and the seawater will not flow away from top to bottom when the first valve body 2.42 is lifted, improving the pumping efficiency of the water pumping mechanism 2.

[0052] Combined with Figure 5 As shown in the preferred embodiment of the present invention, the first flip structure 7 includes a first rotating shaft sleeve 7.1, a first swing rod 7.2, a first valve cover 7.3 and a first limiting frame 7.4. An axial support 13 is further provided at the upper end of the first valve body 2.42;

[0053] The first rotating shaft sleeve 7.1 is fixedly connected to the upper end of the first valve body 2.42;

[0054] One end of the first swing rod 7.2 is rotatably connected to the first rotating shaft sleeve 7.1, and the other end is fixedly connected to the first valve cover 7.3. The seawater in the pumping well 2.3 drives the first valve cover 7.3 to flip up or down to open or close the first through hole 6;

[0055] The outer diameter of the first valve cover 7.3 is greater than or equal to the aperture of the first through hole 6;

[0056] The first limiting frame 7.4 is fixedly connected to the upper end of the first valve body 2.42 and is located between the first rotating shaft sleeve 7.1 and the first valve cover 7.3, and is used to limit the first flipping angle of the first swing rod 7.2 so that the first flipping angle is controlled within a preset first flipping angle;

[0057] The axial support 13 is fixedly connected to the upper end of the first valve body 2.42, and the upper end of the axial support 13 is rotatably connected to one end of the push rod 2.41.

[0058] Specifically, since the first valve cover 7.3 is rotatably connected to the upper end of the first valve body 2.42 through the first swing rod 7.2, when the first valve body 2.42 moves downward, the seawater will push open the first valve cover 7.3 and enter above the first valve body 2.42 through the first through hole 6. When the first valve body 2.42 moves upward, due to the provision of the first limit frame 7.4, the lifting angle of the swing rod is restricted. During the process of lifting the first valve body 2.42, the seawater that has entered above the first valve body 2.42 will press the first valve cover 7.3, causing the first valve cover 7.3 to close to prevent seawater from flowing back. This structure is simple, and this pumping process does not require additional electric control or human intervention, improving the pumping efficiency while reducing the cost.

[0059] Combined with Figure 6 As shown, to further optimize the above solution, the water pumping mechanism 2 further includes a second valve body 2.5. The second valve body 2.5 is fixedly connected inside the pumping well 2.3 and is located below the first valve body 2.42. A second through hole 8 is provided on the second valve body 2.5. A second flip structure 9 is rotatably connected to the upper end of the second valve body 2.5. The second flip structure 9 is used for the seawater in the pumping well 2.3 to flow upward through the second through hole 8.

[0060] Specifically, since the second valve body 2.5 is provided below the first valve body 2.42 and the second valve body 2.5 is fixed inside the pumping well 2.3, during the process of the first valve body 2.42 moving downward, the first valve body 2.42 will press the seawater between the first valve body 2.42 and the second valve body 2.5, increasing the amount of seawater entering above the first valve body 2.42 through water pressure. At the same time, during the process of the first valve body 2.42 rising, the seawater below the second valve body 2.5 will be introduced between the first valve body 2.42 and the second valve body 2.5 to prepare for the next pumping of the first valve body 2.42. Therefore, the setting of the second valve body 2.5 improves the pumping efficiency.

[0061] To further optimize the above solution, the second flip structure 9 includes a second rotating shaft sleeve 9.1, a second swing rod 9.2, a second valve cover 9.3, and a second limit frame 9.4;

[0062] The second rotating shaft sleeve 9.1 is fixedly connected to the upper end of the second valve body 2.5;

[0063] One end of the second swing rod 9.2 is rotatably connected to the second rotating shaft sleeve 9.1, and the other end is fixedly connected to the second valve cover 9.3. The seawater in the pumping well 2.3 drives the second valve cover 9.3 to flip up or down to open or close the second through hole 8;

[0064] The outer diameter of the second valve cover 9.3 is greater than or equal to the aperture of the second through hole 8;

[0065] The second limit frame 9.4 is fixedly connected to the upper end of the second valve body 2.5 and is located between the second rotating shaft sleeve 9.1 and the second valve cover 9.3, and is used to limit the second flipping angle of the second swing rod 9.2 so that the second flipping angle is controlled within a preset second flipping angle.

[0066] Specifically, since the second valve cover 9.3 is rotatably connected to the upper end of the second valve body 2.5 through the second swing rod 9.2, when the first valve body 2.42 moves downward, the second valve cover 9.3 will close. At this time, seawater will press against the upper end of the second valve body 2.5 to form a certain water pressure. When the first valve body 2.42 moves downward, the first valve cover 7.3 will open. At the same time, under the action of the water pressure, the seawater between the first valve body 2.42 and the second valve body 2.5 will enter above the first valve body 2.42 faster, increasing the amount of seawater entering above the first valve body 2.42. During the process of lifting the first valve body 2.42, the seawater entering above the first valve body 2.42 will press the first valve cover 7.3 to make the first valve cover 7.3 close to prevent seawater from flowing back downward during the lifting process. At this time, the water pressure between the first valve body 2.42 and the second valve body 2.5 will be less than the water pressure of the seawater below the second valve body 2.5. Therefore, the seawater below the second valve body 2.5 will push open the second valve cover 9.3 and enter between the first valve body 2.42 and the second valve body 2.5 to prepare for the next pumping of the first valve body 2.42. The structure of the second valve body 2.5 is simple, and no electric control or other human interference is required during the pumping process, further improving the pumping efficiency.

[0067] To further optimize the above solution, the transmission mechanism 2.2 includes a connecting rod 2.21 and a fixing structure 2.22. One end of the connecting rod 2.21 is rotatably connected to the float 2.1, and the other end is rotatably connected to the other end of the push rod 2.41. The middle of the connecting rod 2.21 is rotatably connected to the fixing structure 2.22, and the fixing structure 2.22 is fixedly connected to the water guiding structure 1.1.

[0068] Specifically, the fixing structure 2.22 can raise the height of the transmission mechanism 2.2, increase the moving distance of the valve control structure 2.4 in the pumping well 2.3, increase the pumping volume, and improve the pumping efficiency.

[0069] To further optimize the above solution, a plurality of grooves 12 are provided on the water guiding structure 1.1, and a groove 12 is respectively provided below each connecting rod 2.21.

[0070] Specifically, the grooves 12 can increase the stroke of the connecting rod 2.21 when swinging up and down on the water guiding structure 1.1, and improve the pumping efficiency of the water pumping mechanism 2.

[0071] To further optimize the above solution, the anchor cable structure 3 includes an anchor line 3.1 and a pile foundation 3.2. One end of the anchor line 3.1 is fixedly connected to the floating body structure 1.2, and the other end is fixedly connected to the pile foundation 3.2. Specifically, the floating body structure 1.2 is fixed by the pile foundation 3.2 to prevent the floating body structure 1.2 from leaving the predetermined position due to the impact of sea waves.

[0072] Among them, the present invention ingeniously proposes the principle of generating electricity by pumping water through the float 2.1 and combines it with the overtopping power generation principle to invent a wave energy power generation device that combines water pumping and overtopping. First, the device uses ocean waves to drive the float 2.1, causing it to receive a vertical wave force and generate a vertical motion. While the float 2.1 moves vertically upward, the float 2.1 makes the first valve body 2.42 move downward along the water extraction well 2.3 through the transmission mechanism 2.2. The first valve cover 7.3 opens, and the second valve cover 9.3 closes. As the first valve body 2.42 moves downward, the water body between the first valve body 2.42 and the second valve body 2.5 will enter the water extraction well 2.3 above the first valve body 2.42 from the cover opening position of the first valve body 2.42. When the float 2.1 moves to the highest position, the kinetic energy of the float 2.1 is completely converted into its gravitational potential energy. Under the action of gravity, the float 2.1 falls back towards the sea surface, and at the same time, it will drive the first valve body 2.42 to move upward along the water extraction well 2.3. Due to the water pressure, the first valve cover 7.3 is in the closed state at this time. Therefore, the first valve body 2.42 will lift the water body above it along the water extraction well 2.3. Since the movement of the first valve body 2.42 causes the volume between the first valve body 2.42 and the second valve body 2.5 to increase, the water pressure acting on the second valve cover 9.3 decreases. Under the action of atmospheric pressure, the sea water in the ocean will open the second valve cover 9.3 and enter between the two water valves to reserve sea water for the next first valve body 2.42. When the lifted sea water in the water extraction well 2.3 reaches or exceeds the drainage port of the drainage pipe 10, the sea water will flow into the water collection pool 4 in the middle of the water guiding structure 1.1, and then drive the water turbine in the power generation structure at the bottom of the water collection pool 4 to generate electricity.

[0073] The waves in the ocean keep fluctuating, and the float 2.1 continuously moves up and down reciprocally. The above-mentioned water pumping and power generation process of the water extraction mechanism 2 is continuously repeated. The above power generation method based on pumping water through the float 2.1 can not only achieve power generation for medium and large wave heights but also for small wave heights, and can improve the power generation efficiency of ocean wave energy.

[0074] In addition, a water guiding structure 1.1 is designed at the upper part of the floating body supported by the device of the present invention. When the wave height of the wave is large enough, a part of the wave can climb along the water guiding structure 1.1 to its top and fall into the water collecting pool 4, and then enter the water inlet pipe 5 at the bottom of the water collecting pool 4, and drive the water turbine in the power generation structure to generate electricity. The invention is a novel wave energy power generation device that combines the water pumping of the float 2.1 and the overtopping of the water guiding structure 1.1. Compared with the current overtopping wave energy power generation device, the wave energy power generation device proposed by the present invention can utilize medium and large floating waves, and can also utilize small ocean waves.

[0075] In a preferred embodiment of the present invention, a plurality of upper and lower through gaps 11 are provided at the lower part of the water guiding structure 1.1, and each gap 11 is circumferentially distributed around the water guiding structure 1.1. The float 2.1 is movably connected at the gap 11.

[0076] Specifically, the setting of the gap 11 enables the float 2.1 to only float up and down, restricting the movement of the float 2.1 in its own axial direction, and can improve the pumping efficiency of the water pumping mechanism 2.

[0077] The device of the present invention has the following advantages:

[0078] 1. The device of the present invention generates wave energy based on the water pumping principle of the wave energy float 2.1. Since a valve control structure 2.4 is adopted in the water pumping system, even if the movement of the float 2.1 is small, the water pumping mechanism 2 can still achieve the one-way pumping of water along the pumping well 2.3. Therefore, under low sea conditions, that is, small ocean waves, the device of the present invention can still generate wave energy;

[0079] 2. The upper part of the support platform 1 of the present invention is designed as a water guiding structure 1.1 with a certain slope. A part of the wave can cross the water guiding structure 1.1 and enter the water collecting pool 4, directly driving the water turbine in the power generation system to generate electricity. This retains the function of the traditional overtopping wave energy power generation device and can further increase the power generation efficiency of the device of the present invention;

[0080] 3. The water pumping mechanisms 2 are uniformly arranged around the support platform 1 of the present invention within the range of 0 to 360°. Waves from different directions in the ocean can be utilized, and thus the utilization rate of the wave energy device in the ocean can be improved;

[0081] 4. All the water pumping systems and overtopping power generation of the device of the present invention share the water collecting pool 4 and the water turbine. This can not only save the manufacturing cost of the device, but also improve the power generation efficiency and utilization rate of the power generation system.

[0082] Specifically, the present invention can not only generate electricity through overtopping, that is, obtain seawater from the water guiding structure 1.1 and also get seawater from each water pumping mechanism 2, increasing the amount of seawater in the collecting pool 4, enabling the intake pipe 5 to obtain more seawater, increasing the power generation efficiency and having a higher utilization rate. At the same time, when the sea waves are small, electricity can be generated through water pumping. That is, when seawater cannot enter the collecting pool 4 from the water guiding structure 1.1, the sea waves will still drive the float 2.1 to move up and down. The up and down movement of the float 2.1 will cause the valve control structure 2.4 at the other end of the transmission mechanism 2.2 to move down or up in the pumping well 2.3. When the valve control structure 2.4 moves down, the valve opens to introduce seawater above the valve control structure 2.4. When the valve control structure 2.4 moves up, the valve closes, and the seawater introduced above the valve control structure 2.4 will rise along the valve control structure 2.4 until it is discharged from the pumping well 2.3. After the seawater is discharged from the pumping well 2.3, it enters the collecting pool 4 and then enters the intake pipe 5 for power generation. Compared with the prior art overtopping wave power generation method, a combination of water pumping power generation is added on the basis of overtopping power generation, improving the utilization rate of wave power generation.

[0083] Among them, for the water pumping power generation of the float 2.1: Under the action of external factors, ocean waves fluctuate, driving the vertical movement of the float 2.1 of the wave energy device, realizing the conversion of wave kinetic energy into the kinetic energy of the float 2.1. When the float 2.1 moves to the highest point, the kinetic energy of the float 2.1 is completely converted into its gravitational potential energy. Under the action of gravity, the float 2.1 will fall back towards the sea surface and drive the connected water pumping mechanism 2 to pump water, realizing the conversion of the potential energy of the float 2.1 into the gravitational potential energy of the water body in the water pumping system. When the water body in the water pumping system reaches the water outlet, the water body will flow into the collecting pool 4, driving the power generation system to generate electricity and converting the gravitational potential energy of seawater into electrical energy. As the ocean waves continue to fluctuate, the float 2.1 moves up and down reciprocally, thus realizing the repeated water pumping power generation.

[0084] Overtopping power generation: For some large, medium or high waves, they can climb to the top of the collecting pool 4 through the water guiding structure 1.1, realizing the conversion of wave water body kinetic energy into gravitational potential energy. The water body higher than the top of the collecting pool 4 will flow into the collecting pool 4, driving the power generation system to generate electricity and realizing the conversion of the gravitational potential energy of the lifted water body into electrical energy. Whether the overtopping wave energy power generation can be carried out continuously depends on the size of the wave height of the waves around the wave energy device. To improve the utilization rate of the power generation and power transmission system, these two power generation methods share the collecting pool 4 and the power generation system.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for combined wave energy power generation of water pumping and overtopping, characterized in that, It includes a support platform (1), a number of water pumping mechanisms (2), a power generation system, and an anchor cable structure (3); The support platform (1) includes a water guiding structure (1.1) and a floating body structure (1.2). The water guiding structure (1.1) is fixedly connected to the upper end of the floating body structure (1.2). A water collecting pool (4) is provided in the middle of the water guiding structure (1.1). A cavity is provided inside the floating body structure (1.2); The power generation system is arranged in the cavity. The power generation system includes a water inlet pipe (5), a power generation structure, and a power module. One end of the water inlet pipe (5) is connected to the bottom of the water collecting pool (4) and is in communication with the water collecting pool (4), and is used for collecting the seawater entering the water collecting pool (4) and flowing it into the water inlet pipe (5). The other end of the water inlet pipe (5) is in communication with the power generation structure. The power generation structure is used for converting the potential energy of the seawater flowing into the water inlet pipe (5) into electric energy. The power module is electrically connected to the power generation structure and is used for preprocessing and externally transmitting the electric energy; Each of the water pumping mechanisms (2) is circumferentially distributed around the water collecting pool (4). The water pumping mechanism (2) includes a float (2.1) and a water pumping structure. The float (2.1) is arranged on the sea surface. The waves drive the float (2.1) to float up and down. The up and down floating of the float (2.1) drives the water pumping structure to work, so that the water pumping structure guides the seawater below the water guiding structure (1.1) into the water collecting pool (4); One end of the anchor cable structure (3) is fixedly connected to the floating body structure (1.2) and is used for fixing the position of the device; The water pumping structure includes a transmission mechanism (2.2), a water pumping well (2.3), and a valve control structure (2.4). The middle of the transmission mechanism (2.2) is rotatably connected to the water guiding structure (1.1). One end of the transmission mechanism (2.2) is rotatably connected to the float (2.1), and the other end is rotatably connected to the valve control structure (2.4). The water pumping well (2.3) is arranged vertically. The water pumping well (2.3) is fixedly connected to the water collecting pool (4) and is used for communicating the water collecting pool (4) and the space below the floating body structure (1.2). The valve control structure (2.4) is movably connected in the water pumping well (2.3). The seawater drives the float (2.1) to float and drives the valve control structure (2.4) to move in the water pumping well (2.3) through the transmission mechanism (2.2), so as to drain the seawater below the valve control structure (2.4) into the water collecting pool (4).

2. The device for combined water pumping and overtopping wave energy power generation according to claim 1, characterized in that A drain pipe (10) is provided at the upper part of the water pumping well (2.3), and the drain outlet of the drain pipe (10) is located above the water collecting pool (4).

3. The device for combined water pumping and overtopping wave energy power generation according to claim 2, wherein The valve control structure (2.4) includes a first valve body (2.42), which is slidably fitted in the pumping well (2.3). The first valve body (2.42) is a one-way valve structure for the seawater in the pumping well (2.3) to flow upward to the upper part of the first valve body (2.42).

4. The device for combined water pumping and overtopping wave energy power generation according to claim 3, wherein The valve control structure (2.4) further includes a push rod (2.41). A first through hole (6) is provided on the first valve body (2.42). The upper end of the first valve body (2.42) is rotatably connected to a first flip structure (7). One end of the push rod (2.41) is rotatably connected to the first flip structure (7). The first flip structure (7) is for the seawater in the pumping well (2.3) to flow upward through the first through hole (6).

5. The device for combined water pumping and overtopping wave energy power generation according to claim 4, characterized in that, The first flip structure (7) includes a first rotating shaft sleeve (7.1), a first swing rod (7.2), a first valve cover (7.3) and a first limit frame (7.4). An axle bracket (13) is further provided at the upper end of the first valve body (2.42); The first rotating shaft sleeve (7.1) is fixedly connected to the upper end of the first valve body (2.42); One end of the first swing rod (7.2) is rotatably connected to the first rotating shaft sleeve (7.1), and the other end is fixedly connected to the first valve cover (7.3). The seawater in the pumping well (2.3) drives the first valve cover (7.3) to flip upward or downward to open or close the first through hole (6); The outer diameter of the first valve cover (7.3) is greater than or equal to the aperture of the first through hole (6); The first limit frame (7.4) is fixedly connected to the upper end of the first valve body (2.42) and is located between the first rotating shaft sleeve (7.1) and the first valve cover (7.3) for restricting the first flipping angle of the first swing rod (7.2) so that the first flipping angle is controlled within the preset first flipping angle; The upper end of the axle bracket (13) is rotatably connected to one end of the push rod (2.41).

6. The device for combined water pumping and overtopping wave energy power generation according to any one of claims 2, 4, and 5, characterized in that The water pumping mechanism (2) further includes a second valve body (2.5), which is fixedly connected in the pumping well (2.3) and is located below the valve control structure (2.4). A second through hole (8) is provided on the second valve body (2.5). The upper end of the second valve body (2.5) is rotatably connected to a second flip structure (9). The second flip structure (9) is for the seawater in the pumping well (2.3) to flow upward through the second through hole (8).

7. The device for combined water pumping and overtopping wave energy power generation according to claim 6, wherein The second flip structure (9) includes a second rotating shaft sleeve (9.1), a second swing rod (9.2), a second valve cover (9.3) and a second limit frame (9.4); The second rotating shaft sleeve (9.1) is fixedly connected to the upper end of the second valve body (2.5); One end of the second swing rod (9.2) is rotatably connected to the second rotating shaft sleeve (9.1), and the other end is fixedly connected to the second valve cover (9.3). The seawater in the pumping well (2.3) drives the second valve cover (9.3) to turn up or down to open or close the second through hole (8). The outer diameter of the second valve cover (9.3) is greater than or equal to the aperture of the second through hole (8). The second limit frame (9.4) is fixedly connected to the upper end of the second valve body (2.5) and is located between the second rotating shaft sleeve (9.1) and the second valve cover (9.3) for limiting the second turning angle of the second swing rod (9.2) so that the second turning angle is controlled within the preset second turning angle.

8. The device for combined water pumping and overtopping wave energy power generation according to any one of claims 4, 5, and 7, characterized in that, The transmission mechanism (2.2) includes a connecting rod (2.21) and a fixing structure (2.22). One end of the connecting rod (2.21) is rotatably connected to the float (2.1), and the other end is rotatably connected to the other end of the push rod (2.41). The middle of the connecting rod (2.21) is rotatably connected to the fixing structure (2.22), and the fixing structure (2.22) is fixedly connected to the water guiding structure (1.1).

9. The device for combined water pumping and overtopping wave energy power generation according to claim 1, characterized in that, A plurality of vertically penetrating notches (11) are provided in the lower part of the water guiding structure (1.1). Each of the notches (11) is circumferentially distributed around the water guiding structure (1.1), and the float (2.1) is movably connected to the notches (11).

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