Winding drum direct-drive type wave power generation device based on floating type ocean platform

Abstract

The invention provides a winding drum direct drive type wave power generation device based on a floating type ocean platform, which comprises the floating type ocean platform, a power generation mechanism, a winch and pull-back mechanism, a storage battery and an oil tank assembly, the upper platform, the personnel operation layer, the power generation device mounting layer, the winch and pull-back mechanism mounting layer, the storage battery layer and the oil tank layer are sequentially arranged from top to bottom, and the power generation mechanism, the winch and pull-back mechanism, the storage battery and the oil tank assembly are respectively arranged from top to bottom. Compared with the prior art, the floating type ocean platform has the following beneficial effects that the whole floating type ocean platform can drive the winding drum rope to correspondingly stretch or retract in the sea along with the up-and-down movement, translation and other movement of sea waves and ocean currents, the winding drum rope drives the winding drum to rotate, and the rotation is connected with an input shaft of the power generator; when the rotating speed meets the power generation requirement, the generator is directly driven to work for power generation.

Description

Technical Field

[0001] The present invention is a drum direct-driven sea wave power generation device based on a floating ocean platform, belonging to the technical field of ocean equipment. Background Art

[0002] Wave energy is a very ideal type of renewable energy. Compared with other clean renewable energy sources, it contains the most energy among all renewable energy sources in the world. Wave energy reserves are rich and have huge potential. The vast ocean, which accounts for about 71% of the earth's surface area, contains more than 300 million kilowatts of energy that can be converted into electricity, and is concentrated near the sea surface.

[0003] Wave energy generation not only eases the pressure on electricity consumption in coastal cities, but also provides electricity for residents on remote islands and reefs in my country. my country has vast oceans and numerous islands, but the shortage of energy has seriously restricted the survival and development of many islands in my country. However, the use of wave energy generation can effectively solve the above problems. It not only effectively utilizes wave resources to implement wave power generation, seawater desalination and other work to achieve self-sufficiency, but also promotes the civilian value of islands. In addition, wave energy generation also plays a great role in the military field. It can help the garrison in the distant seas to power themselves; it can establish underwater charging stations to reduce the possibility of being discovered by the enemy and greatly increase its range and concealed defense capabilities. For floating wave energy power generation devices, the floating body can also be designed into a reef shape, and special materials can be used to prevent detection, so as to achieve secret power supply on remote garrison islands, and can also serve as the first line of defense for island protection.

[0004] Wave energy is currently recognized as one of the most promising renewable energy sources in the world. Especially in the context of the "Maritime Silk Road", the large-scale popularization of new energy vehicles and energy transformation, mature wave energy power generation technology will ease my country's electricity pressure and reduce the proportion of thermal power generation, which is of great significance to my country's energy strategy. my country's wave energy power generation technology started late and there is still much room for improvement.

[0005] It can be seen from the relevant research literature on wave energy power generation devices at home and abroad that, classified by different energy capture methods, wave energy power generation devices mainly include three types: oscillating water column type, wave gathering and overtaking type, and oscillating body type; according to different geographical locations and water depths, they can also be divided into fixed and floating types, and according to the energy transmission method, they can be divided into pneumatic, hydraulic, mechanical, etc. For the design and development of the two structural methods of pneumatic and hydraulic types, since there are two types of energy conversion in the process of wave energy transmission, that is, wave energy is first converted into pressure energy, and then the pressure energy is transmitted to the generator input through the circuit and converted into electrical energy, which will cause relatively more energy loss, and the efficiency of the power generation device will not be very high. Summary of the invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a drum direct-drive wave power generation device based on a floating ocean platform.

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A drum direct-drive wave power generation device based on a floating ocean platform, comprising a floating ocean platform, a power generation mechanism, a hoisting and pulling-back mechanism, a storage battery and a fuel tank assembly. The floating ocean platform is divided into six layers from top to bottom, namely an upper platform, a personnel operation layer, a power generation device installation layer, a hoisting and pulling-back mechanism installation layer, a storage battery layer and a fuel tank layer. The power generation mechanism, the hoisting and pulling-back mechanism, the storage battery and the fuel tank assembly are respectively arranged in the power generation device installation layer, the hoisting and pulling-back mechanism installation layer, the storage battery layer and the fuel tank layer from top to bottom.

[0008] Further, the power generation mechanism includes a large bottom plate arranged at the inner bottom of the power generation device installation layer. A generator is provided on the top of the large bottom plate. One end of the side output of the generator is connected to one end of an electromagnetic clutch. The other end of the electromagnetic clutch is connected to one end of a drive speed increaser. The output end of the drive speed increaser is connected to a drive hydraulic motor through coupling three. The other output end of the drive speed increaser is connected to one end of a short shaft through coupling four. The other end of the short shaft is connected to coupling five. The other end of coupling five is connected to a capture speed increaser. The two side output ends of the capture speed increaser are respectively connected to an energy capture hydraulic pump and a planetary speed increaser through coupling six and coupling seven.

[0009] Further, the energy capture hydraulic pump is connected to a hydraulic energy storage system. The other end of the hydraulic energy storage system is connected to the drive hydraulic motor. The other end of the planetary speed increaser is connected to one end of a flywheel through coupling eight. The other end of the flywheel is connected to one end of a flywheel stepped shaft. The other end of the flywheel stepped shaft is connected to one end of a one-way clutch. The other end of the one-way clutch is connected to one end of a large gear shaft. A transmission large bevel gear is connected to the large gear shaft. The transmission large bevel gear meshes with the top transmission bevel gear. The other end of the large gear shaft is connected to an auxiliary pulling-back motor through coupling nine.

[0010] Further, the hoisting and pulling-back mechanism includes a small bottom plate installed at the inner bottom of the hoisting and pulling-back mechanism installation layer. One side of the top of the small bottom plate is provided with a vertical plate. U-shaped grooves are provided at the tops of the two vertical plates. Bearing seats are installed in the U-shaped grooves. Bearing caps are provided outside the bearing seats. A drum shaft is rotatably connected between the two side bearing seats. A drum is fixed on the drum shaft. A mooring steel cable is wound on the drum. The end of the mooring steel cable extends to the outside of the floating ocean platform and is connected to a sea anchor.

[0011] Further, one end of the reel shaft is connected to the recovery assembly, and the other end of the reel shaft is connected to a driving bevel gear. The driving bevel gear meshes with a bottom transmission bevel gear, and the bottom transmission bevel gear is fixed on a transmission main shaft. The transmission main shaft is movably connected within the hoisting and pulling-back mechanism installation layer. The top end of the transmission main shaft movably penetrates into the power generation device installation layer and is connected to a top transmission bevel gear. The top transmission bevel gear meshes with the power generation mechanism.

[0012] Further, the recovery assembly includes a coupling one. One end of the coupling one is connected to the end of the reel shaft, the other end of the coupling one is connected to one end of a reducer, the other end of the reducer is connected to one end of a coupling two, the other end of the coupling two is connected to a pulley, a steel wire rope is wound around the pulley, the other end of the steel wire rope is connected to one end of a spring through a connecting plate, and the other end of the spring is connected to a lifter.

[0013] Further, the fuel tank assembly includes a lower annular fuel tank and auxiliary oil pumps. A plurality of the auxiliary oil pumps are evenly distributed within the lower annular fuel tank.

[0014] Further, the connection between the transmission main shaft and the power generation device installation layer is connected by shaft sealing.

[0015] Further, a vertical plate support is connected between the vertical plate and the small bottom plate.

[0016] Further, a vertical plate cross beam matching with the mooring steel cable is installed between the two vertical plates on both sides.

[0017] Advantages of the present invention: The present invention can drive the corresponding elongation or shortening movement of the reel cable through the up-and-down, translation and other movements of the entire floating ocean platform in the sea along with the waves and ocean currents. The reel cable will drive the reel to generate a rotational movement, and this rotation is connected to the input shaft of the generator. When the rotational speed meets the power generation requirements, it directly drives the generator to work for power generation; when the rotational speed is too high or too low, wave energy will be stored through the hydraulic system to make it a stable energy source meeting the power generation requirements, and is output to the generator through a hydraulic motor for power generation, while ensuring the power generation efficiency of the generator and protecting the generator. Wave energy is captured and converted into electrical energy and other energy conversions and outputs in this way. And, from the perspective of control theory, the hoisting mechanism belongs to a proportional link and there is no energy loss. Only one energy conversion occurs in this solution, that is, wave energy is directly converted into electrical energy in proportion, with small system losses and high power generation efficiency.

[0018] The present invention is applicable to areas where the average wave height of the sea waves ranges from 0.9 to 1.1 m and the average wave period is 5 s for direct drive power generation. In addition, this set of devices can meet the requirements of energy storage and power generation under sea state 5 at most through its own hydraulic system. The power generation power of a single set of devices is about 30 kw, and three sets of power generation devices are evenly distributed at 120°, with a total power generation power of about 90 kw.

[0019] Considering the efficiency of this set of wave energy power generation devices, when the sea wave conditions do not meet the direct drive power generation conditions, this set of devices will store energy through the hydraulic system to make it a stable energy source that meets the power generation requirements, output through the hydraulic motor to the generator for power generation operations, while ensuring the power generation efficiency of the generator and protecting the generator. It has the advantages of a wide power generation range, high power generation efficiency, stable and reliable operation, etc.

[0020] During one wave motion cycle, during the rising section of the wave, the wave will push the floating ocean platform upward, and then the mooring steel cable will be pulled to drive the drum to generate a rotational motion. The rotational motion will pass through bevel gears, one-way couplings, planetary speed increasers until the generator, and three driving motions of power generation, energy storage, and spring energy storage will be carried out simultaneously. During the falling section of the wave, the wave will drive the floating ocean platform to move downward. At this time, the mooring steel cable in the winch will loosen. First, the recovery component will release energy to generate a reverse rotational motion (such as rotating counterclockwise along the axis) to pull back the mooring steel cable. At the same time, the hydraulic energy storage system will release energy, drive the hydraulic motor, drive the speed increaser until the generator, and will carry out energy storage power generation. This cycle repeats to achieve full-time power generation throughout the full cycle time and improve the power generation efficiency. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description 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.

[0022] Figure 1 It is the overall structure schematic diagram of a drum direct drive type wave power generation device based on a floating ocean platform of the present invention; Figure 2 It is the A-A cross-sectional structure schematic diagram of a drum direct drive type wave power generation device based on a floating ocean platform of the present invention; Figure 3 It is the structure schematic diagram of the fuel tank assembly of a drum direct drive type wave power generation device based on a floating ocean platform of the present invention; Figure 4 It is the structure schematic diagram of the winch and pulling-back mechanism of a drum direct drive type wave power generation device based on a floating ocean platform of the present invention; Figure 5 This is a schematic structural diagram of the power generation mechanism of a drum direct-drive wave power generation device based on a floating ocean platform according to the present invention.

[0023] In the figure, 1 is a floating ocean platform; 2 is a power generation mechanism; 3 is a winching and pulling-back mechanism; 4 is a storage battery; 5 is a fuel tank assembly; 6 is a lower annular fuel tank; 7 is an auxiliary oil pump; 8 is a transmission main shaft; 9 is a shaft seal; 10 is a bottom transmission bevel gear; 11 is a drum shaft; 12 is a vertical plate; 13 is a mooring steel cable; 14 is a drum; 15 is a vertical plate cross beam; 16 is a small bottom plate; 17 is a vertical plate support; 18 is a bearing seat; 19 is a bearing gland; 20 is a coupling one; 21 is a reducer; 22 is a coupling two; 23 is a pulley; 24 is a steel wire rope; 25 is a spring; 26 is a lift; 27 is a generator; 28 is a large bottom plate; 29 is an electromagnetic clutch; 30 is a drive speed increaser; 31 is a coupling three; 32 is a coupling four; 33 is a short shaft; 34 is an energy capture hydraulic pump; 35 is a drive hydraulic motor; 36 is a coupling five; 37 is a coupling six; 38 is a capture speed increaser; 39 is a coupling seven; 40 is a planetary speed increaser; 41 is a coupling eight; 42 is a flywheel; 43 is a flywheel stepped shaft; 44 is a one-way clutch; 45 is a transmission large bevel gear; 46 is a large gear shaft; 47 is a coupling nine; 48 is an auxiliary pulling-back motor; 49 is a hydraulic energy storage system. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-5 , the present invention provides a technical solution for a drum direct-drive wave power generation device based on a floating ocean platform, including a floating ocean platform 1, a power generation mechanism 2, a winching and pulling-back mechanism 3, a storage battery 4, and a fuel tank assembly 5. The floating ocean platform 1 is divided into six layers from top to bottom, namely an upper platform, a personnel operation layer, a power generation device installation layer, a winching and pulling-back mechanism installation layer, a storage battery layer, and a fuel tank layer. The power generation mechanism 2, the winching and pulling-back mechanism 3, the storage battery 4, and the fuel tank assembly 5 are respectively arranged in the power generation device installation layer, the winching and pulling-back mechanism installation layer, the storage battery layer, and the fuel tank layer from top to bottom.

[0026] Refer to Figure 5, the power generation mechanism 2 includes a large bottom plate 28 disposed at the inner bottom of the power generation device installation layer. A generator 27 is provided on the top of the large bottom plate 28. The side output end of the generator 27 is connected to one end of an electromagnetic clutch 29. The other end of the electromagnetic clutch 29 is connected to one end of a drive speed increaser 30. The output end of the drive speed increaser 30 is connected to a drive hydraulic motor 35 through a coupling three 31. The other output end of the drive speed increaser 30 is connected to one end of a short shaft 33 through a coupling four 32. The other end of the short shaft 33 is connected to a coupling five 36. The other end of the coupling five 36 is connected to a capture speed increaser 38. The two side output ends of the capture speed increaser 38 are respectively connected to an energy capture hydraulic pump 34 and a planetary speed increaser 40 through a coupling six 37 and a coupling seven 39. The energy capture hydraulic pump 34 is connected to a hydraulic energy storage system 49. The other end of the hydraulic energy storage system 49 is connected to the drive hydraulic motor 35. The other end of the planetary speed increaser 40 is connected to one end of a flywheel 42 through a coupling eight 41. The other end of the flywheel 42 is connected to one end of a flywheel stepped shaft 43. The other end of the flywheel stepped shaft 43 is connected to one end of a one-way clutch 44. The other end of the one-way clutch 44 is connected to one end of a large gear shaft 46. A transmission large bevel gear 45 is connected to the large gear shaft 46. The transmission large bevel gear 45 meshes with the top transmission bevel gear. The other end of the large gear shaft 46 is connected to an auxiliary pulling-back motor 48 through a coupling nine 47; in the power generation mechanism, when the rotational movement of the drum 14 is transmitted to the upper large bevel gear 45 through the bevel gear 10, the large gear shaft 46 rotates and is connected to the auxiliary pulling-back motor 48 at the right end of the gear through the coupling 47, which is also designed to assist in tightening the mooring steel cable 13. The components connected to the left side of the gear are, in sequence, the one-way clutch 44, the flywheel stepped shaft 43, the flywheel 42, the coupling 41, the planetary speed increaser 40, the coupling 39, and the capture speed increaser 38. This speed increaser is divided into two paths. The lower path is the direct drive power generation path, which is transmitted to the drive speed increaser 30 through the coupling 36, the short shaft 33, and the coupling 32, and then connected to the electromagnetic clutch 29 and the generator 27 through a key connection at the left end for direct drive power generation. The upper path is connected to the energy capture hydraulic pump 34 through the coupling 37. To cope with the sea wave environment where direct drive power generation is not possible, the hydraulic energy storage system 49 is used for energy storage to prepare for stable power generation in the future. When the hydraulic energy storage system 49 accumulates enough energy to enable stable power generation, the drive hydraulic motor 35 operates, and power generation is carried out through the coupling 31, the drive speed increaser 30, the electromagnetic clutch 29, and the generator 27.Considering the installation of the entire power generation device installation layer, the whole is divided into three parts. The bottom plates are connected by bolts to form a large bottom plate 28. To ensure the power generation efficiency, during the power generation process, it is required that the rotational movement of power generation is in the same direction. Therefore, a one-way clutch 44 is used to enable the movement in only one direction to continue to be transmitted to the left. The flywheel 42 is used to make the entire rotational movement smoother and more conducive to power generation. After being increased in speed by the planetary speed increaser 40, it is output to the front of the electromagnetic clutch 29 through a series of shaft transmissions. At this time, according to the sensors installed on the shaft, the rotational speed is identified. When the rotational speed meets the power generation requirements, the electromagnetic clutch 29 is powered off and power generation proceeds normally. When the rotational speed is too low or too high, the electromagnetic clutch 29 is powered on for braking, so that the energy for the floating offshore platform 1 to rise at this time is stored in the hydraulic energy storage system 49 through the hydraulic system. After being accumulated and rectified, it is output through the driving hydraulic motor 35 near the fuel tank to achieve stable power generation of the generator.

[0027] Refer to Figure 4, the winching and pulling-back mechanism 3 includes a small base plate 16 installed at the inner bottom of the winching and pulling-back mechanism installation layer. On one side of the top of the small base plate 16, a vertical plate 12 is installed. A vertical plate support 17 is connected between the vertical plate 12 and the small base plate 16. U-shaped grooves are provided at the tops of the two groups of vertical plates 12. A bearing seat 18 is installed in the U-shaped groove. A bearing gland 19 is provided on the outer side of the bearing seat 18. A drum shaft 11 is rotatably connected between the two bearing seats 18 on both sides. A drum 14 is fixed on the drum shaft 11. A mooring steel cable 13 is wound on the drum 14. The mooring steel cable 13 is stretched under the movement of the floating offshore platform 1, so as to transport external energy into the device. A vertical plate cross beam 15 matching with the mooring steel cable 13 is installed between the two vertical plates 12 on both sides. The end of the mooring steel cable 13 extends to the outside of the floating offshore platform 1 and is connected to a sea anchor. One end of the drum shaft 11 is connected to a recovery assembly, and the other end of the drum shaft 11 is connected to a driving bevel gear. The driving bevel gear meshes with a bottom transmission bevel gear 10. The bottom transmission bevel gear 10 is fixed on a transmission main shaft 8. The transmission main shaft 8 is movably connected in the winching and pulling-back mechanism installation layer. The connection between the transmission main shaft 8 and the power generation device installation layer is sealed by a shaft seal 9. The top end of the transmission main shaft 8 movably penetrates into the power generation device installation layer and is connected to a top transmission bevel gear. The top transmission bevel gear meshes with the power generation mechanism 2; the support method of the winching and pulling-back mechanism 3 is first to place the two vertical plates 12 on both sides in the grooves of the base plate 16, and then weld the vertical plate support 17 to weld the three into an integral whole by welding. Then, the lower bearing seat is placed in the U-shaped groove of the vertical plate 12, and the drum shaft 11 passing through the drum 14 and the bearing is placed therein. After being placed, the upper bearing seat is fastened by bolt connection, and the bearing glands 19 are screwed on both ends with screws. A vertical plate cross beam 15 is installed around the vertical plate 12 to prevent the mooring steel cable 13 from coming out; the left side of the drum shaft 11 is connected to the transmission bevel gear 10, and the rotational movement is transmitted to the power generation device installation layer through the transmission main shaft 8. The right side of the drum shaft 11 is respectively connected to a coupling 20, a reducer 21, a coupling 22, a pulley 23, a steel wire rope 24, a spring 25, and a lifter 26 to realize the recovery of the mooring steel cable 13.

[0028] Refer to Figure 4 , the recovery assembly includes a coupling one 20. One end of the coupling one 20 is connected to the end of the drum shaft 11, the other end of the coupling one 20 is connected to one end of the reducer 21, the other end of the reducer 21 is connected to one end of a coupling two 22, the other end of the coupling two 22 is connected to the pulley 23. A steel wire rope 24 is wound on the pulley 23. The other end of the steel wire rope 24 is connected to one end of the spring 25 through a connecting plate, and the other end of the spring 25 is connected to the lifter 26.

[0029] Refer toFigure 3 The fuel tank assembly 5 includes a lower annular fuel tank 6 and auxiliary oil pumps 7. A number of the auxiliary oil pumps 7 are evenly distributed in the lower annular fuel tank 6, which is placed at the bottommost layer of the entire floating offshore platform 1, reducing the center of gravity of the whole device and making it more stable in the sea.

[0030] Based on a floating offshore platform, the power generation process of the winch direct drive wave power generation device can be divided into two stages according to a cycle of the wave (5 s): rising from the wave trough to the wave crest (rising section) and falling from the wave crest to the wave trough (falling section). For the two different stages, power generation schemes for the two processes are proposed: 1. Direct drive power generation during the rising section. When the requirements for power generation are met during the rising section, direct drive power generation is carried out. During the half-wave cycle (about 2.5 s) of the wave rising section, first, the wave will push the floating offshore platform 1 to float upward, driving the mooring steel cable 13 to be tensioned, causing the drum 14 on the hoisting and pulling-back mechanism 3 to rotate; then, the rotational movement of the drum 14 drives the bottom transmission bevel gear 10 through the driving bevel gear. The bottom transmission bevel gear 10 drives the top transmission bevel gear located in the power generation device installation layer to rotate through the transmission main shaft 8. The top transmission bevel gear will drive the transmission bevel gear 45 to rotate. The transmission bevel gear 45 transmits the rotational movement through the one-way clutch 44, flywheel stepped shaft 43, flywheel 42, coupling 41, planetary speed increaser 40, coupling 39, capture speed increaser 38, drive speed increaser 30, electromagnetic clutch 29 until the generator 27. If the input speed meets the range of 1500 r / min ± 5% required for power generation, direct power generation is carried out.

[0031] 2. Hydraulic energy storage simultaneously during the rising section. Hydraulic energy storage with the same power is carried out simultaneously during the rising section. While the rotational movement generated by the drum 14 is transmitted to the power generation location, it drives the capture speed increaser 38 and the energy capture hydraulic pump 34 to rotate, sucking the lower-layer hydraulic oil and outputting 16 MPa hydraulic oil through the hydraulic pump, which enters the hydraulic energy storage system 49 for energy storage with the same power as the mechanical input. The running time of the pump is 2.5 s during the rising section.

[0032] 3. Synchronous energy storage of the spring pulling-back mechanism during the rising section. Synchronous energy storage of the spring pulling-back mechanism is carried out during the rising section. When the drum 14 rotates forward, the number of turns of its rotating shaft, after being decelerated by the reducer 21, is converted into a tangential movement through the pulley 23, which will cause the spring 25 to extend and contract by nearly 50 times for synchronous energy storage.

[0033] 4. Full hydraulic energy storage during the rising stage. If the input speed of the hoist cannot meet the power generation requirement, then hydraulic energy storage will occur. At this time, if the input speed of the hoist does not meet the range of 1500 r / min ± 5%, the electromagnetic clutch 29 will disconnect, the generator 27 will not generate electricity, and the mechanical energy input by the hoist will be converted into hydraulic energy through the capture hydraulic pump 34 and transmitted to the hydraulic energy storage system 49 for storage; until when the power generation requirement is met, the hydraulic energy storage system 49 will release energy to drive power generation.

[0034] 5. Hydraulic energy storage power generation during the falling stage. During half a wave cycle (about 2.5 s) of the wave falling stage, the hydraulic energy storage system 49 will release the stored energy with the same power as the mechanical input during the rising stage. It will drive the hydraulic motor 35 and the drive speed increaser 30 to rotate. Through the electromagnetic clutch 29, if the input speed meets the range of 1500 r / min ± 5% of the power generation requirement, it will drive the generator 27 to rotate in the same direction as the rising stage for power generation; if it does not meet the power generation requirement, the above Article 4 will be executed.

[0035] 6. The spring pull-back energy storage mechanism during the falling stage releases energy to pull back the steel cable. When the platform falls back, the spring mechanism will release the stored energy and apply a reverse rotational motion to the drum 14 through the pulley 23, the coupling 22, the reducer 21, and the coupling 19 to recover the mooring cable 13 to the drum 14; a redundancy design method is adopted here. The pull-back information can be obtained by measuring the number of revolutions of the drum. If the pull-back force is not enough, the auxiliary pull-back motor 48 will be started for auxiliary pull-back. The auxiliary pull-back motor is controlled by this motor control valve, and this valve is selected as an electro-hydraulic proportional valve, which can linearly control the flow rate of the pull-back oil circuit.

[0036] Periodic wave energy capture and power generation. The above steps are the entire process of power generation in a wave cycle. Within a wave cycle, this drum direct-driven wave power generation device can perform power generation operations, and at the same time has an energy storage function and can capture all the energy of the waves. Repeating the above steps can achieve periodic wave power generation operations.

[0037] Although this specification is described according to the implementation manners, not every implementation manner only contains an independent technical solution. This narrative manner 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 implementation manners that can be understood by those skilled in the art.

Claims

1. A drum direct-drive wave power generation device based on a floating ocean platform, characterized in that It includes a floating ocean platform (1), a power generation mechanism (2), a hoisting and pulling-back mechanism (3), a storage battery (4), and a fuel tank assembly (5). The floating ocean platform (1) is divided into six layers from top to bottom, namely the upper platform, the personnel operation layer, the power generation device installation layer, the hoisting and pulling-back mechanism installation layer, the storage battery layer, and the fuel tank layer. The power generation mechanism (2), the hoisting and pulling-back mechanism (3), the storage battery (4), and the fuel tank assembly (5) are respectively arranged in the power generation device installation layer, the hoisting and pulling-back mechanism installation layer, the storage battery layer, and the fuel tank layer from top to bottom.

2. The drum direct drive wave power generation device based on a floating ocean platform according to claim 1, characterized in that The power generation mechanism (2) includes a large bottom plate (28) arranged at the inner bottom of the power generation device installation layer. A generator (27) is provided at the top of the large bottom plate (28). The side output end of the generator (27) is connected to one end of an electromagnetic clutch (29). The other end of the electromagnetic clutch (29) is connected to one end of a drive speed increaser (30). The output end of the drive speed increaser (30) is connected to a drive hydraulic motor (35) through a coupling three (31). The other output end of the drive speed increaser (30) is connected to one end of a short shaft (33) through a coupling four (32). The other end of the short shaft (33) is connected to a coupling five (36). The other end of the coupling five (36) is connected to a capture speed increaser (38). The two side output ends of the capture speed increaser (38) are respectively connected to an energy capture hydraulic pump (34) and a planetary speed increaser (40) through a coupling six (37) and a coupling seven (39).

3. The drum direct-drive wave power generation device based on a floating ocean platform according to claim 2, characterized in that, The energy capture hydraulic pump (34) is connected to a hydraulic energy storage system (49). The other end of the hydraulic energy storage system (49) is connected to the drive hydraulic motor (35). The other end of the planetary speed increaser (40) is connected to one end of a flywheel (42) through a coupling eight (41). The other end of the flywheel (42) is connected to one end of a flywheel stepped shaft (43). The other end of the flywheel stepped shaft (43) is connected to one end of a one-way clutch (44). The other end of the one-way clutch (44) is connected to one end of a large gear shaft (46). A transmission large bevel gear (45) is connected to the large gear shaft (46). The transmission large bevel gear (45) meshes with the top transmission bevel gear. The other end of the large gear shaft (46) is connected to an auxiliary pulling-back motor (48) through a coupling nine (47).

4. The drum direct drive wave power generation device based on a floating ocean platform according to claim 3, characterized in that, The winching and pulling-back mechanism (3) includes a small base plate (16) installed at the inner bottom of the winching and pulling-back mechanism installation layer. On one side of the top of the small base plate (16), a vertical plate (12) is installed. U-shaped grooves are provided at the tops of the two groups of vertical plates (12). A bearing seat (18) is installed in the U-shaped groove. A bearing gland (19) is provided on the outer side of the bearing seat (18). A drum shaft (11) is rotatably connected between the two bearing seats (18). A drum (14) is fixed on the drum shaft (11). A mooring steel cable (13) is wound on the drum (14). The end of the mooring steel cable (13) extends to the outside of the floating offshore platform (1) and is connected to a sea anchor.

5. The drum direct-drive wave power generation device based on a floating ocean platform according to claim 4, wherein, One end of the drum shaft (11) is connected to a recovery assembly, and the other end of the drum shaft (11) is connected to a driving bevel gear. The driving bevel gear meshes with a bottom transmission bevel gear (10). The bottom transmission bevel gear (10) is fixed on a transmission main shaft (8). The transmission main shaft (8) is movably connected in the winching and pulling-back mechanism installation layer. The top end of the transmission main shaft (8) movably penetrates into the power generation device installation layer and is connected to a top transmission bevel gear. The top transmission bevel gear meshes with the power generation mechanism (2).

6. The drum direct-drive wave power generation device based on a floating ocean platform according to claim 5, characterized in that, The recovery assembly includes a coupling one (20). One end of the coupling one (20) is connected to the end of the drum shaft (11). The other end of the coupling one (20) is connected to one end of a reducer (21). The other end of the reducer (21) is connected to one end of a coupling two (22). The other end of the coupling two (22) is connected to a pulley (23). A steel wire rope (24) is wound on the pulley (23). The other end of the steel wire rope (24) is connected to one end of a spring (25) through a connecting plate. The other end of the spring (25) is connected to a lifter (26).

7. The drum direct-drive wave power generation device based on a floating ocean platform according to claim 6, characterized in that, The fuel tank assembly (5) includes a lower annular fuel tank (6) and auxiliary oil pumps (7). A plurality of the auxiliary oil pumps (7) are evenly distributed in the lower annular fuel tank (6).

8. A drum direct-drive wave power generation device based on a floating ocean platform according to claim 7, characterized in that, The connection between the transmission main shaft (8) and the power generation device installation layer is connected by a shaft seal (9).

9. The drum direct-drive wave power generation device based on a floating ocean platform according to claim 8, characterized in that, A vertical plate support (17) is connected between the vertical plate (12) and the small base plate (16).

10. A drum direct-drive wave power generation device based on a floating ocean platform according to claim 9, characterized in that, A vertical plate cross beam (15) that cooperates with the mooring steel cable (13) is installed between the two vertical plates (12).

Images