CN116816579B - Multiple wave-collecting oscillation water column type wave energy power generation device array based on energy-collecting plate - Google Patents
Multiple wave-collecting oscillation water column type wave energy power generation device array based on energy-collecting plate Download PDFInfo
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- CN116816579B CN116816579B CN202311070925.9A CN202311070925A CN116816579B CN 116816579 B CN116816579 B CN 116816579B CN 202311070925 A CN202311070925 A CN 202311070925A CN 116816579 B CN116816579 B CN 116816579B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 238000010248 power generation Methods 0.000 title claims abstract description 71
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- 230000005570 vertical transmission Effects 0.000 claims description 14
- 230000005571 horizontal transmission Effects 0.000 claims description 9
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/24—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy to produce a flow of air, e.g. to drive an air turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
- F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention relates to the technical field of ocean wave energy power generation, in particular to a multiple wave-collecting oscillation water column type wave energy power generation device array based on an energy collecting plate, wherein the diameters of cylinders of a plurality of cylindrical oscillation water column wave energy power generation devices are distributed in a gradient manner along the array; the oscillating water column wave energy power generation device comprises an energy collecting plate, a power generation system, an air chamber, a shell main body and a mooring system; the energy collecting plate is connected to the bottom of the shell main body, a ballast water tank positioned outside the air chamber is further arranged in the shell main body, a circular opening communicated with the top of the air chamber is formed in the middle of the upper surface of the shell main body, and a wedge-shaped water inlet communicated with the bottom of the air chamber is formed below the side part of the shell main body. The invention adopts the multiple wave-collecting oscillation water column type wave energy power generation device array based on the energy-collecting plate, and the oscillation water column type wave energy power generation device is combined with the energy-collecting plate, so that the power generation efficiency of the wave energy device can be greatly improved, and the problem of lower conversion efficiency of the existing oscillation water column type wave energy power generation device is solved.
Description
Technical Field
The invention relates to the technical field of ocean wave energy power generation, in particular to a multiple wave-collecting oscillation water column type wave energy power generation device array based on an energy-collecting plate.
Background
With the continuous development of society and economy, the problem of the scarcity of traditional energy is remarkable, and the annual average energy demand in the future 30 years in China can reach 3 times of the early era of the present generation. The demand for renewable energy sources by human beings is increasing, and the use of novel clean energy sources is becoming a research hotspot. The ocean area accounts for 70% of the earth's surface area, and the ocean contains abundant renewable energy sources, mainly wave energy, tidal energy, ocean current energy, temperature difference energy, salt difference energy and the like. Wave energy is a marine energy source with a large energy reserve, wide distribution, strong predictability and large energy density, and is the focus of research in various countries.
To date, several typical wave energy power generation devices have been developed such as: noded duck type, pendulum type, oscillation float type, oscillation water column type, sea snake type, etc. Among the wave power generation devices, the oscillating water column type wave power generation device is widely adopted because of simple structure and reliable performance. However, the conventional oscillating water column type wave energy power generation device has the problems of low conversion efficiency and the like, so the invention provides a multiple wave-focusing oscillating water column type wave energy power generation device array for improving the wave energy utilization rate and the wave energy conversion efficiency.
Disclosure of Invention
The invention aims to provide a multiple wave-collecting oscillation water column type wave energy power generation device array based on an energy collecting plate, and the combination of an oscillation water column type wave energy power generation device and the energy collecting plate can greatly improve the power generation efficiency of the wave energy device and solve the problem of lower conversion efficiency of the existing oscillation water column type wave energy power generation device.
In order to achieve the purpose, the invention provides a multiple wave-collecting oscillation water column type wave power generation device array based on an energy-collecting plate, which comprises a plurality of cylindrical oscillation water column wave power generation devices, wherein the diameters of the cylinders of the oscillation water column wave power generation devices are distributed in a gradient manner along the array;
the oscillating water column wave energy power generation device comprises an energy collecting plate, a power generation system, an air chamber, a shell main body and a mooring system; the energy collecting plate is connected to the bottom of the shell main body, the shell main body is hollow and cylindrical, the air chamber is arranged in the shell main body and is located at the upper side of the energy collecting plate, a ballast water tank located at the outer side of the air chamber is further arranged in the shell main body, a circular opening communicated with the top of the air chamber is formed in the middle of the upper surface of the shell main body, a wedge-shaped water inlet communicated with the bottom of the air chamber is formed in the lower portion of the side portion of the shell main body, the power generation system is arranged on the upper portion of the air chamber, the mooring system is arranged at the outer bottom of the energy collecting plate and comprises a mooring anchor chain, one end of the mooring anchor chain is connected to the bottom of the energy collecting plate, and the other end of the mooring anchor chain is fixed to the seabed.
Preferably, the lower part of the air chamber is of a conical structure, the upper part of the air chamber is of a cylindrical channel, and the conical structure and the cylindrical channel are connected into a whole to form an inverted funnel shape.
Preferably, the power generation system is arranged at the transition joint of the cylindrical channel of the air chamber and the conical structure, and comprises a generator, an air turbine, a vertical transmission shaft, a horizontal transmission shaft, a small conical gear and a large conical gear, wherein the air turbine is arranged at the bottom of the vertical transmission shaft in a smooth manner, the top of the vertical transmission shaft is connected with the large conical gear, the upper side of the large conical gear is connected with the small conical gear in a meshed manner, and the small conical gear is connected with the generator through the horizontal transmission shaft.
Preferably, the energy collecting plate and the shell main body are fixedly connected into a whole, the energy collecting plate is of a bamboo hat-shaped structure formed by welding rings with different diameters, and the focus of the energy collecting plate is positioned at the bottom of the air chamber.
Preferably, the diameters of the two continuous oscillating water column type wave energy power generation devices are as follows:
；
wherein the method comprises the steps ofIs the firstnDiameter of each oscillating water column type wave energy generating device, < ->For the diameter of the first oscillating water column type wave energy power generation device +.>Is an exponential gradient parameter>Indicate->Abscissa of oscillating water column type wave energy generating device +.>Is the abscissa of the first oscillating water column type wave energy power generation device.
Preferably, the middle part of the upper surface of the shell main body is provided with an annular water filling port positioned at the outer side of the circumference of the circular opening, the water filling port is communicated with the ballast water tank, an annular cover plate is detachably connected in the water filling port, and the cross section of the annular cover plate is of a convex structure.
Mechanism of the invention
According to the invention, the energy collecting plate of the bamboo hat-shaped disc is arranged at the bottom of the air chamber, and when waves are incident into the device from the wedge-shaped water inlet, the energy collecting plate can collect the waves into the air chamber of the device through reflection, so that the incident wave height is improved, and the wave energy utilization rate and the wave energy conversion efficiency are further improved.
The reflected wave from the concave surface of the parabolic collector plate may propagate toward a fixed focal point location, with the maximum wave height concentrated at one half or one wavelength from the concave surface apex. For certain wave environments, the wave height of the focal position can reach more than four times the incident wave height, and the obtained wave energy is multiplied. By utilizing the characteristic that the focus position of the parabolic concave surface can collect wave energy, the focus position of the wave collecting plate can be changed by making the wave collecting plate into a specific shape, so that waves are collected in the device air chamber.
According to the linear potential flow theory, when the diameter of a cylinder in an array of wave energy devices is distributed in a gradient along the array, the energy carried by a plane incident wave is amplified within a given cylinder for a range of wavelengths and directions of incidence commensurate with the length of the array. Using a transfer matrix analysis, it can be derived that the radial grading of the cylinder causes the right-traveling Rayleigh-Bloch wave to excite at the front of the array, gradually slowing down the array until a turning point is reached, where the group velocity is zero. The energy carried by the localized Rayleigh-Bloch waves accumulates at the turning points, resulting in a greater energy amplification.
When waves act on an array of the multiple wave-collecting oscillation water column type wave power generation device combined with the energy collecting plate, the waves are collected at a fixed focus position, air in the air chamber generates extrusion flow due to the rising of the water level in the air chamber, and air flows out of the air chamber along a cylindrical narrow channel above the air chamber in a concentrated manner. The air chamber and the outside are subjected to frequent air exchange through the air holes, and the air can push the turbine to rotate in the flowing process, so that the generator is driven to rotate in an accelerating way through the transmission device, and electric energy is generated.
The invention has the beneficial effects that:
(1) The bottom device of the invention is provided with the energy collecting plate, which can collect incident waves at the focus, improve the incident wave height and further improve the wave energy utilization rate and the wave energy conversion efficiency. The air chamber is arranged in an inverted funnel shape, so that waves can be more effectively gathered, the air in the air chamber is extruded by the cone-shaped structure in the inverted funnel shape, and the air flow rate is improved, so that the wave energy conversion power is improved, the total amount of incident waves can be effectively increased by the wedge-shaped water inlet at one side of the air chamber, and the incident wave energy is improved.
(2) The diameter of the cylinder of the oscillating water column wave energy power generation device in the array is distributed in a gradient manner along the array. By changing the diameter of the wave energy power generation devices in the array, the wave gathering effect is further improved, and the wave energy conversion efficiency is greatly improved.
(3) The energy collecting plate is a bamboo hat-shaped disc and is formed by welding rings with different diameters, and the energy collecting plate is simple in structure and convenient to produce and process. The energy collecting plate is connected with the shell main body into a whole, so that the structure of the device is simplified, and the production cost is saved. The ballast water tank is arranged in the shell main body, so that the gravity center and the floating state of the device can be adjusted according to the requirement, and the overall stability of the device is improved. The power generation system is arranged at an upper position in the air chamber, so that the power generation system is prevented from being contacted with water, the generator can be effectively protected, and the service life of the generator is prolonged.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a multiple wave-focusing oscillating water column wave power generation device array based on energy focusing plates of the present invention;
FIG. 2 is a schematic diagram of an oscillating water column type wave energy power plant of the present invention;
FIG. 3 is a schematic cross-sectional view of an oscillating water column wave power generation device of the present invention;
FIG. 4 is a schematic diagram of an oscillating water column wave power plant energy concentrating plate of the present invention;
fig. 5 is a schematic diagram of a power generation system of an oscillating water column type wave power generation device of the present invention.
Reference numerals:
1. oscillating water column wave energy power generation device; 2. an energy collecting plate; 3. a power generation system; 31. a generator; 32. an air turbine; 33. a vertical transmission shaft; 34. a horizontal drive shaft; 35. a pinion bevel gear; 36. a large bevel gear; 4. a gas chamber; 41. a cylindrical passage; 42. a conical structure; 5. a housing main body; 51. a circular opening; 52. a water filling port; 53. an annular cover plate; 54. a wedge-shaped water inlet; 6. mooring a mooring chain; 7. a ballast water tank; 8. a focal point.
Detailed Description
The invention will be further described with reference to examples. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The above-mentioned features of the invention or the features mentioned in the specific examples can be combined in any desired manner, and these specific examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1 to 5, as shown in the drawings, the present invention provides a multiple wave-collecting oscillation water column type wave power generation device array based on a energy-collecting plate 2, which comprises a plurality of cylindrical oscillation water column wave power generation devices 1, wherein the cylindrical diameters of the oscillation water column wave power generation devices 1 are distributed in a gradient manner along the array; the diameters of the two continuous oscillating water column type wave energy power generation devices are as follows:
；
wherein the method comprises the steps ofIs the firstnDiameter of each oscillating water column type wave energy generating device, < ->For the diameter of the first oscillating water column type wave energy power generation device +.>Is an exponential gradient parameter>Indicate->Abscissa of oscillating water column type wave energy generating device +.>Is the abscissa of the first oscillating water column type wave energy power generation device.
By changing the diameter of the oscillating water column wave energy power generation device 1 in the diameter array, the wave collecting effect is further improved, and the wave energy conversion efficiency is greatly improved.
The oscillating water column wave energy power generation device 1 comprises an energy collecting plate 2, a power generation system 3, a gas chamber 4, a shell main body 5 and a mooring system, wherein the energy collecting plate 2 is connected to the bottom of the shell main body 5, the energy collecting plate 2 and the shell main body 5 are fixedly connected into a whole, the energy collecting plate 2 is of a bamboo hat-shaped structure formed by welding rings with different diameters, and a focus 8 of the energy collecting plate 2 is positioned at the bottom in the gas chamber 4. The energy collecting plate 2 with the parabolic structure collects the wave crest of the incident wave at the position of the fixed focus 8 above the energy collecting plate 2, thereby improving the incident wave height.
The shell main body 5 is hollow cylindrical, the air chamber 4 is arranged in the shell main body 5 and is positioned on the upper side of the energy collecting plate 2, the lower part of the air chamber 4 is of a conical structure 42, the upper part of the air chamber 4 is of a cylindrical channel 41, the conical structure 42 and the cylindrical channel 41 are connected into a whole to form an inverted funnel, the whole structure is narrow in upper part and wide in lower part, the air flow rate can be effectively accelerated, and the rotating speed of the air turbine 32 is further improved. The middle part of the upper surface of the housing main body 5 is provided with a circular opening 51 communicated with the cylindrical passage 41 at the top of the air chamber 4. The air in the air chamber 4 generates extrusion flow due to the rising of the water level in the air chamber 4, and the air flow intensively flows out of the air chamber 4 along the cylindrical channel 41 above the air chamber 4, so that the power generation system 3 is driven to rotate to generate electric energy.
The ballast water tank 7 positioned outside the air chamber 4 is also arranged in the shell main body 5, the middle part of the upper surface of the shell main body 5 is positioned outside the circumference of the circular opening 51, an annular water injection port 52 is arranged, the water injection port 52 is communicated with the ballast water tank 7, an annular cover plate 53 is detachably connected in the water injection port 52, and the cross section of the annular cover plate 53 is of a convex structure. The water filling port 52 can be used for filling water into the ballast water tank 7, and the water quantity can be adjusted according to the requirement, so that the gravity center and the floating state of the device can be adjusted, and the overall stability of the device can be improved.
The wedge-shaped water inlet 54 communicated with the bottom of the air chamber 4 is arranged below the side part of the shell main body 5, the wedge-shaped water inlet 54 is arranged at the joint of the lower part of the shell main body 5 and the energy collecting plate 2, a certain wedge-shaped angle is arranged on the wedge-shaped water inlet 54, a wedge-shaped opening with wide outside and narrow inside is formed, and waves enter the energy collecting plate 2 from the wedge-shaped water inlet 54, so that the incident water quantity is increased, namely the total quantity of incident waves can be effectively increased, and the energy of the incident waves is improved.
The power generation system 3 is arranged at the upper part of the air chamber 4, the power generation system 3 is arranged at the transitional joint of the cylindrical channel 41 and the conical structure 42 of the air chamber 4, the power generation system 3 comprises a power generator 31, an air turbine 32, a vertical transmission shaft 33, a horizontal transmission shaft 34, a small conical gear 35 and a large conical gear 36, the air turbine 32 is arranged at the bottom of the vertical transmission shaft 33, the top of the vertical transmission shaft 33 is connected with the large conical gear 36, the upper side of the large conical gear 36 is connected with the small conical gear 35 in a meshed manner, and the small conical gear 35 is connected with the power generator 31 through the horizontal transmission shaft 34. The vertical transmission shaft 33 and the horizontal transmission shaft 34 are connected to the housing main body 5 through support members, respectively.
The wave surface change of the incident wave causes the change of the air volume in the air chamber 4, the air impacts the blades of the air turbine 32, the blades rotate to drive the vertical transmission shaft 33 to rotate, and the vertical transmission shaft 33 is meshed with the small bevel gear 35 through the large bevel gear 36 to drive the horizontal transmission shaft 34 to rotate, so that the generator 31 is driven to generate electricity.
The mooring system is arranged at the outer bottom of the energy collecting plate 2, and comprises a mooring anchor chain 6, one end of the mooring anchor chain 6 is connected to the bottom of the energy collecting plate 2, and the other end of the mooring anchor chain is fixed in the seabed.
Specific working principle
When waves act on the oscillating water column wave power generation device 1, the waves gather at the position of the fixed focus 8 above the energy gathering plate 2, air in the air chamber 4 generates extrusion flow due to rising of the water level in the air chamber 4, air flow intensively flows out of the air chamber 4 along the cylindrical channel 41 above the air chamber 4, blades of the impact air turbine 32 are pushed to rotate, and the vertical transmission shaft 33, the horizontal transmission shaft 34 and the large conical gear 36 are matched with the small conical gear 35 to drive the generator 31 to rotate in an accelerating mode, so that electric energy is generated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (5)
1. Multiple wave-collecting oscillation water column type wave energy power generation device array based on energy-collecting plate, its characterized in that: the device comprises a plurality of cylindrical oscillating water column wave power generation devices, wherein the diameters of the cylinders of the oscillating water column wave power generation devices are distributed in a gradient manner along the array;
the oscillating water column wave energy power generation device comprises an energy collecting plate, a power generation system, an air chamber, a shell main body and a mooring system; the energy collecting plate is connected to the bottom of the shell main body, the shell main body is hollow and cylindrical, the air chamber is arranged in the shell main body and is positioned on the upper side of the energy collecting plate, a ballast water tank positioned on the outer side of the air chamber is also arranged in the shell main body, a circular opening communicated with the top of the air chamber is arranged in the middle of the upper surface of the shell main body, a wedge-shaped water inlet communicated with the bottom of the air chamber is arranged below the side part of the shell main body, the power generation system is arranged on the upper part of the air chamber, the mooring system is arranged on the bottom of the outer side of the energy collecting plate, the mooring system comprises a mooring anchor chain, one end of the mooring anchor chain is connected to the bottom of the energy collecting plate, and the other end of the mooring anchor chain is fixed in the seabed;
the energy collecting plate and the shell main body are fixedly connected into a whole, the energy collecting plate is of a bamboo hat-shaped structure formed by welding rings with different diameters, and a focus of the energy collecting plate is positioned at the bottom of the air chamber.
2. The energy concentrating plate-based multiple wave concentrating oscillation water column type wave energy power generation device array according to claim 1, wherein: the lower part of the air chamber is of a conical structure, the upper part of the air chamber is of a cylindrical channel, and the conical structure and the cylindrical channel are connected into a whole to form an inverted funnel shape.
3. The energy concentrating plate-based multiple wave concentrating oscillation water column type wave energy power generation device array according to claim 2, wherein: the power generation system is arranged at the transition joint of the cylindrical channel of the air chamber and the conical structure and comprises a generator, an air turbine, a vertical transmission shaft, a horizontal transmission shaft, a small conical gear and a large conical gear, wherein the air turbine is installed at the bottom of the vertical transmission shaft in a flush manner, the top of the vertical transmission shaft is connected with the large conical gear, the small conical gear is connected with the upper side of the large conical gear in a meshed manner, and the small conical gear is connected with the generator through the horizontal transmission shaft.
4. The energy concentrating plate-based multiple wave concentrating oscillation water column type wave energy power generation device array according to claim 1, wherein: the diameters of the two continuous oscillating water column type wave energy power generation devices are as follows:
；
wherein the method comprises the steps ofIs the firstnDiameter of each oscillating water column type wave energy generating device, < ->For the diameter of the first oscillating water column type wave energy power generation device +.>Is an exponential gradient parameter>Indicate->Abscissa of oscillating water column type wave energy generating device +.>Is the abscissa of the first oscillating water column type wave energy power generation device.
5. The energy concentrating plate-based multiple wave concentrating oscillation water column type wave energy power generation device array according to claim 1, wherein: the middle part of the upper surface of the shell main body is positioned at the outer side of the circumference of the circular opening, an annular water filling port is arranged and communicated with the ballast water tank, an annular cover plate is detachably connected in the water filling port, and the cross section of the annular cover plate is of a convex structure.
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| CN202311070925.9A CN116816579B (en) | 2023-08-24 | 2023-08-24 | Multiple wave-collecting oscillation water column type wave energy power generation device array based on energy-collecting plate |
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| CN202311070925.9A CN116816579B (en) | 2023-08-24 | 2023-08-24 | Multiple wave-collecting oscillation water column type wave energy power generation device array based on energy-collecting plate |
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| CN116816579B true CN116816579B (en) | 2023-11-07 |
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