Oscillation type wave energy device

Abstract

The invention provides an oscillation type wave energy device which comprises an outer frame supporting body and floaters, the bottom of the outer frame supporting body is connected with a seabed base, the seabed base is buried in the seabed, three sets of vertical guide rails are arranged on the side edge of the outer frame supporting body, vertical racks are arranged on the side edges of the vertical guide rails, the floaters are arranged on the outer frame supporting body in a sleeving mode, and the floaters are arranged on the outer frame supporting body in a sleeving mode. The floater is vertically connected to the three sets of vertical guide rails in a sliding mode. The device has the following beneficial effects that the device is suitable for a hard seabed environment, the device transmits wave energy through a gear transmission device, the wave energy is directly converted into mechanical energy, efficiency is high, auxiliary energy storage power generation is conducted through a hydraulic system, and therefore the energy utilization rate is increased, and the device has the advantages of being simple in construction process, free of production halt, short in construction period, low in cost and the like. And the efficiency is high.

Description

Technical Field

[0001] The present invention is an oscillating wave energy device, belonging to the field of ocean power generation equipment. Background Art

[0002] Currently, the consumption of resources by humans is increasing day by day, and the development of new energy has become extremely urgent. The ocean, which accounts for 71% of the global area, contains rich energy. Wave energy is an ideal type among many renewable energy sources. Compared with other clean and renewable energy sources, the energy it contains is also the most among all renewable energy sources in the world. Wave energy has rich reserves and great potential. Reasonably utilizing waves can effectively alleviate the current energy crisis faced by humans.

[0003] Among the existing wave energy power generation devices, classified by different energy capture methods, there are mainly three forms: oscillating water column type, concentrating wave overtopping type, and oscillating body type; they can also be divided into fixed type and floating type according to different geographical locations and water depths.

[0004] Wave energy has uncertainty, with a large range of fluctuations in wave height and flow velocity. Therefore, when the rotational speed of the main shaft of the power generation device is not sufficient to reach the rated rotational speed of the generator, the power generation purpose cannot be achieved and the energy will be wasted. The hydraulic auxiliary energy storage device is an effective solution. When the waves are small, the energy that cannot be converted will be stored in the accumulator. When power generation is required, the accumulator releases the stored high-pressure oil, and the high-pressure oil drives the hydraulic motor to rotate. The hydraulic motor drives the generator shaft to rotate, thereby enabling the generator to generate electricity. Summary of the Invention

[0005] Aiming at the deficiencies existing in the prior art, the purpose of the present invention is to provide an oscillating wave energy device.

[0006] In order to achieve the above purpose, the present invention is realized through the following technical solutions: An oscillating wave energy device includes an outer frame support body and a float. The bottom of the outer frame support body is connected to a seabed base, and the seabed base is buried in the seabed. Three groups of vertical guide rails are provided on the side of the outer frame support body, and vertical racks are provided on the side of the vertical guide rails. A float is sleeved on the outer frame support body, and the float is vertically slidably connected to the three groups of vertical guide rails.

[0007] Further, the float includes a float outer shell, which is a hollow structure. A sliding hole matching the three groups of vertical guide rails is opened in the middle of the float outer shell. Three groups of float chambers and three groups of overall fixing plates are provided inside the float outer shell. The top of the overall fixing plate is connected with a power generation hydraulic system and a hydraulic energy storage system. The output end of the power generation hydraulic system penetrates into the sliding hole and meshes with the vertical rack.

[0008] Further, the power generation hydraulic system includes a vertical fixing plate installed on one side of the overall fixing plate. A gear transmission system is installed on one side of the vertical fixing plate. One input end on the side of the gear transmission system penetrates through the float housing into the sliding hole to engage with the vertical rack. One output end on the side of the gear transmission system is connected to a driving speed increaser through a coupling. The end of the driving speed increaser is respectively connected to the housing rotor output shaft main shaft of a hydraulic motor and a magnetic coupling device through a speed increaser main output shaft and a side output shaft. The side shaft of the housing rotor output shaft of the magnetic coupling device is connected to a capture speed increaser. The side output shaft of the capture speed increaser is connected to the hydraulic pump of the hydraulic energy storage system. The internal rotor of the magnetic coupling device is connected to the generator shaft of the generator. An electric motor waterproof housing is installed outside the generator. The generator is connected to a storage battery through an underwater cable. The other end of the storage battery is connected to the hydraulic energy storage system through another underwater cable.

[0009] Further, the hydraulic energy storage system includes an accumulator, a main control chamber, and an oil tank fixed on the overall fixing plate. The oil outlet of the accumulator is connected to the hydraulic motor through an oil pipe. The oil inlet of the accumulator is connected to an energy capture pump through another oil pipe. One end of the energy capture pump is communicated with the capture speed increaser, and the other end of the energy capture pump is communicated with the oil tank. One side of the main control chamber is connected to the underwater cable extending from the storage battery, and the other side of the main control chamber is connected to a shore monitoring system through a cable.

[0010] Further, both ends of the electric motor waterproof housing are fixed on the overall fixing plate through a motor head fixing base and a motor tail fixing base respectively.

[0011] Further, the hydraulic motor is fixed on the overall fixing plate through a hydraulic motor fixing base.

[0012] Further, watertight joints are provided at both ends of the underwater cable.

[0013] Further, two fixing plate metals are provided between the vertical fixing plate and the overall fixing plate.

[0014] Further, an oil pipe support frame matching with the oil pipe and a power generation hydraulic system sealing ring matching with the hydraulic energy storage system are provided on the overall fixing plate.

[0015] Advantages of the present invention: The present invention is applicable to a seabed environment with relatively hard texture. The device transmits wave energy through a gear transmission device, directly converts wave energy into mechanical energy, with high efficiency, and performs auxiliary energy storage and power generation through a hydraulic system, thereby improving the energy utilization rate. It has the advantages of simple construction process without the need for production suspension, short construction period, and high efficiency.

[0016] The present invention uses a one-way bearing to drive a one-way gear, and during the up and down movement along the rack guide rail, it outputs the rotational speed in the same direction, so that the device can output a stable rotational speed in the same direction to drive the generator to generate electricity during the periodic reciprocating swing of the wave.

[0017] The hydraulic system of the present invention is responsible for auxiliary energy storage, stores the energy that cannot be utilized for the power generation part, releases it at an appropriate time, and generates electricity under the action of a hydraulic motor. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of an oscillating wave energy device of the present invention; Figure 2 It is a schematic diagram of the internal structure of the float housing of an oscillating wave energy device of the present invention; Figure 3 It is a schematic diagram of the connection structure of the power generation hydraulic system and the hydraulic energy storage system of an oscillating wave energy device of the present invention; Figure 4 It is a schematic diagram of the partial structure of an oscillating wave energy device of the present invention.

[0020] In the figure, 1. Outer frame support; 2. Vertical guide rail; 3. Float housing; 4. Seabed base; 5. Float box; 6. Storage battery; 7. Power generation hydraulic system; 8. Hydraulic energy storage system; 9. Gear transmission system; 10. Fixed sheet metal; 11. Coupling; 12. Driving speed increaser; 13. Hydraulic motor; 14. Capture speed increaser; 15. Magnetic coupling device; 16. Watertight joint; 17. Underwater cable; 18. Hydraulic motor fixed base; 19. Overall fixed plate; 20. Motor head fixed base; 21. Motor waterproof housing; 22. Generator; 23. Motor tail fixed base; 24. Oil pipe; 25. Oil pipe support frame; 26. Power generation hydraulic system sealing ring; 27. Accumulator; 28. Main control chamber; 29. Energy capture pump; 30. Fuel tank; 31. Vertical fixed plate. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , the present invention provides a technical solution for an oscillating wave energy device, including an outer frame support 1 and a float. The bottom of the outer frame support 1 is connected to a seabed base 4, and the seabed base 4 is buried in the seabed. Three vertical guide rails 2 are provided on the side of the outer frame support 1, and vertical racks are provided on the side of the vertical guide rails 2. A float is sleeved on the outer frame support 1, and the float is vertically slidably connected to the three vertical guide rails 2; the stability of the vertical movement of the float is improved through the vertical guide rails 2, and the wear generated during vertical movement is reduced.

[0023] Refer to Figure 3 , the float includes a float outer shell 3. The float outer shell 3 is a hollow structure. A sliding hole matching the three vertical guide rails 2 is opened in the middle of the float outer shell 3 to improve the stability of the sliding connection. Three float chambers 5 and three overall fixing plates 19 are provided inside the float outer shell 3. A power generation hydraulic system 7 and a hydraulic energy storage system 8 are connected to the top of the overall fixing plate 19. The output end of the power generation hydraulic system 7 penetrates into the sliding hole and meshes with the vertical rack. Through the action of the vertical rack, the power generation hydraulic system 7 and the hydraulic energy storage system 8 inside the float can be driven when the float moves up and down.

[0024] Refer to Figure 3 , the power generation hydraulic system 7 includes a vertical fixing plate 31 installed on one side of the overall fixing plate 19. Two fixing plate metals 10 are provided between the vertical fixing plate 31 and the overall fixing plate 19. The strength and stability of both the vertical fixing plate 31 and the overall fixing plate 19 are improved through the fixing plate metals 10. A gear transmission system 9 is installed on one side of the vertical fixing plate 31. One side input end of the gear transmission system 9 penetrates the float outer shell 3 into the sliding hole and meshes with the vertical rack. One side output end of the gear transmission system 9 is connected to a drive speed increaser 12 through a coupling 11. The gear transmission system 9 is composed of two groups of gears. Both groups of gears are connected through a rotating shaft. The rotating shaft is rotatably connected to the overall fixing plate 19. The gears at the outer ends of the rotating shaft mesh with the two rows of vertical racks outside the float. The gears at one end of the rotating shaft inside the float mesh with each other in pairs. One of the rotating shafts is connected to the drive speed increaser 12 through a coupling, specifically as Figure 3 and Figure 4As shown, the end parts of the driving speed increaser 12 are respectively connected to the outer shell magnetic rotor output shaft main shafts of the hydraulic motor 13 and the magnetic coupling device 15 through the speed increaser main output shaft and the side output shaft. The side shaft of the outer shell magnetic rotor output shaft of the magnetic coupling device 15 is connected to the capture speed increaser 14. The side output shaft of the capture speed increaser 14 is connected to the hydraulic pump of the hydraulic energy storage system 8. The inner magnetic rotor of the magnetic coupling device 15 is connected to the generator shaft of the generator 22. An electric motor waterproof housing 21 is installed outside the generator 22. The two ends of the electric motor waterproof housing 21 are respectively fixed on the overall fixing plate 19 through the electric motor head end fixing base 20 and the electric motor tail end fixing base 23. The generator 22 is connected to the storage battery 6 through the underwater cable 17. The other end of the storage battery 6 is connected to the hydraulic energy storage system 8 through another underwater cable 17. Watertight joints 16 are provided at both ends of the underwater cable 17.

[0025] Refer to Figure 3 , the hydraulic energy storage system 8 includes an accumulator 27, a main control chamber 28 and a fuel tank 30 fixed on the overall fixing plate 19. The oil outlet of the accumulator 27 is connected to the hydraulic motor 13 through an oil pipe 24. The hydraulic motor 13 is fixed on the overall fixing plate 19 through a hydraulic motor fixing base 18. The oil inlet of the accumulator 27 is connected to an energy capture pump 29 through another oil pipe 24. One end of the energy capture pump 29 is communicated with the capture speed increaser 14, and the other end of the energy capture pump 29 is communicated with the fuel tank 30. One side of the main control chamber 28 is connected to the underwater cable 17 extending from the storage battery 6. The other side of the main control chamber 28 is connected to a shore monitoring system through a cable. An oil pipe support frame 25 matched with the oil pipe 24 and a generator hydraulic system sealing ring 26 matched with the hydraulic energy storage system 8 are arranged on the overall fixing plate 19.

[0026] During use, the operation process of the oscillating wave energy capture device is divided into placement and attitude adjustment, the floating action of the float, the operation of the motor when the rated power of the motor is reached, the energy storage in the battery 6, the hydraulic auxiliary energy storage when the rated power of the motor is not reached, the high-energy hydraulic oil-assisted power generation, and the detection and adjustment by the onshore monitoring system. The following is the specific operation plan: Placement and attitude adjustment: Select a relatively hard and stable area on the seabed, measure the sea depth, select the number of sections of the outer frame support 1 required according to the depth, install the outer frame support 1 section by section and install the corresponding three columns of vertical guide rails 2 on the outer surface. Subsequently, install the float on the vertical guide rails 2, so that the gears on the three sets of gear transmission systems 9 on the float are butted against the racks located on the sides of the vertical guide rails 2. Then, connect the float to the onshore monitoring system with a cable for subsequent detection and control. Next, lift the device into the water, bury the seabed base 4 into the seabed, and adjust and reinforce to ensure that the device can work stably; The floating action of the float: After installation, the device starts to work. The waves beat the float, and the float moves up and down on the vertical guide rails 2. At the same time, the gear transmission system 9 on the float starts to rotate under the action of the rack, driving the main shaft to start rotating; When the rated power of the generator 22 is reached, the generator 22 works. The rotation of the main shaft will be further accelerated through the driving speed increaser 12. When the rotation speed reaches the rated rotation speed of the generator 22, the generator 22 starts to work; The battery 6 stores energy: The rotation of the generator 22 generates electrical energy. The electrical energy is transmitted out of the waterproof shell 21 of the generator through the watertight joint 16 and is connected to the battery 6 through the underwater cable 17 to store the electrical energy generated during the storage process; Hydraulic auxiliary energy storage when the rated power of the generator 22 is not reached: When the rotation speed does not reach the rated rotation speed of the generator 22, the generator 22 cannot work. The main shaft is connected to the energy capture pump 29 through the capture speed increaser 14, driving the energy capture pump 29 to work, thereby compressing the hydraulic oil in the oil pipe 24. The hydraulic oil enters the accumulator 27 through the oil inlet, compressing the nitrogen gas balloon inside the accumulator 27 to store the unusable energy. When the hydraulic oil energy stored in the accumulator 27 meets the power generation requirements, the high-energy hydraulic oil will be able to assist in power generation. When the system pressure drops or additional energy is required, the compressed nitrogen gas balloon inside the accumulator 27 expands, pushing the piston inside the accumulator 27 to discharge the stored hydraulic oil from the accumulator 27. The high-energy hydraulic oil flows into the hydraulic motor 13, further driving the hydraulic motor 13 to generate a rotational motion, thereby driving the generator 22 to generate electricity; The onshore monitoring system conducts detection and adjustment: There is a monitoring system onshore to observe the state of the device at any time, adjust the device parameters according to different sea conditions, and control the floating and sinking of the device, so that the device can operate stably.

[0027] Although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An oscillating wave energy device, characterized in that, It includes an outer frame support (1) and a float. The bottom of the outer frame support (1) is connected to a seabed base (4), and the seabed base (4) is buried in the seabed. Three vertical guide rails (2) are provided on the side of the outer frame support (1), and vertical racks are provided on the side of the vertical guide rails (2). A float is sleeved on the outer frame support (1), and the float is vertically slidably connected to the three vertical guide rails (2).

2. The oscillating wave energy device according to claim 1, wherein The float includes a float housing (3). The float housing (3) is a hollow structure. A sliding hole matching the three vertical guide rails (2) is opened in the middle of the float housing (3). Three float tanks (5) and three overall fixing plates (19) are provided inside the float housing (3). A power generation hydraulic system (7) and a hydraulic energy storage system (8) are connected to the top of the overall fixing plate (19). The output end of the power generation hydraulic system (7) penetrates into the sliding hole and meshes with the vertical rack.

3. An oscillating wave energy device according to claim 2, characterized in that, The power generation hydraulic system (7) includes a vertical fixing plate (31) installed on one side of the overall fixing plate (19). A gear transmission system (9) is installed on one side of the vertical fixing plate (31). The input end on one side of the gear transmission system (9) penetrates the float housing (3) into the sliding hole and meshes with the vertical rack. The output end on one side of the gear transmission system (9) is connected to a drive speed increaser (12) through a coupling (11). The end parts of the drive speed increaser (12) are respectively connected to the outer shell magnetic rotor output shaft main shaft of a hydraulic motor (13) and a magnetic coupling device (15) through a speed increaser main output shaft and a side output shaft. The outer shell magnetic rotor output shaft side shaft of the magnetic coupling device (15) is connected to a capture speed increaser (14). The side output shaft of the capture speed increaser (14) is connected to the hydraulic pump of the hydraulic energy storage system (8). The internal magnetic rotor of the magnetic coupling device (15) is connected to the generator shaft of a generator (22). An electric motor waterproof shell (21) is installed outside the generator (22). The generator (22) is connected to a storage battery (6) through an underwater cable (17). The other end of the storage battery (6) is connected to the hydraulic energy storage system (8) through another underwater cable (17).

4. An oscillating wave energy device according to claim 3, characterized in that, The hydraulic energy storage system (8) includes an accumulator (27), a main control bin (28) and an oil tank (30) fixed on the overall fixing plate (19). The oil outlet of the accumulator (27) is connected to the hydraulic motor (13) through an oil pipe (24). The oil inlet of the accumulator (27) is connected to an energy capture pump (29) through another oil pipe (24). One end of the energy capture pump (29) is communicated with the capture speed increaser (14), and the other end of the energy capture pump (29) is communicated with the oil tank (30). One side of the main control bin (28) is connected to the underwater cable (17) extending from the storage battery (6), and the other side of the main control bin (28) is connected to an onshore monitoring system through a cable.

5. An oscillating wave energy device according to claim 4, characterized in that, Both ends of the motor waterproof housing (21) are fixed to the overall fixed plate (19) through a motor head end fixed base (20) and a motor tail end fixed base (23) respectively.

6. The oscillating wave energy device according to claim 5, wherein The hydraulic motor (13) is fixed to the overall fixed plate (19) through a hydraulic motor fixed base (18).

7. An oscillating wave energy device according to claim 6, characterized in that, Watertight joints (16) are provided at both ends of the underwater cable (17).

8. An oscillating wave energy device according to claim 7, wherein, Two fixed plate metals (10) are provided between the vertical fixed plate (31) and the overall fixed plate (19).

9. The oscillating wave energy device according to claim 8, wherein, An oil pipe support frame (25) matching with the oil pipe (24) and a power generation hydraulic system sealing ring (26) matching with the hydraulic energy storage system (8) are provided on the overall fixed plate (19).

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