CN113202699A - Wind energy-wave energy power generation device based on floating platform and working method thereof - Google Patents
Wind energy-wave energy power generation device based on floating platform and working method thereof Download PDFInfo
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- CN113202699A CN113202699A CN202110609322.6A CN202110609322A CN113202699A CN 113202699 A CN113202699 A CN 113202699A CN 202110609322 A CN202110609322 A CN 202110609322A CN 113202699 A CN113202699 A CN 113202699A
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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
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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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
- F03B13/16—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 using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/20—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 using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
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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
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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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
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- Y02E10/20—Hydro energy
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a floating platform-based wind energy-wave energy power generation device, which comprises: the device comprises a wind power generation assembly, a floating platform and a wave power generation assembly; the wind power generation assembly is arranged on a platform of the floating platform; a plurality of wave energy power generation assemblies are uniformly arranged on the periphery of the floating platform; the wave energy power generation assembly can adjust the height according to the fluctuation height of waves; the floater is internally provided with a pendulum type power generation mechanism, and the pendulum is driven to do circular motion by the fluctuation of the floater along with the wave to generate power. When the waves fluctuate in different sizes, the movable plate can be adjusted to adjust the space of the floater which can float up and down and increase the floating amplitude of the floater; according to the invention, a set of power generation mechanism is added in the floater, and the purpose that the generator can rotate no matter the pendulum is heavy and rotates forwards or backwards is realized through the gear set capable of inputting in different directions and outputting in the same direction, so that continuous power generation is ensured.
Description
Technical Field
The invention relates to the technical field of power generation devices, in particular to a floating platform-based wind energy-wave energy power generation device and a working method thereof.
Background
In recent years, wind energy, wave energy power generation and tidal power generation have gradually become hot spots for new energy power generation. With the gradual saturation of the development of wind power resources in the offshore area and the increasing strong demand for protection of the offshore environment, the trend of offshore wind power generation and wave power generation towards the deep sea field will be inevitable. Wind power generation has mature technical support, and wave power generation is in the starting stage of development, so that the realization of wind power and wave power integrated power generation by using a floating platform in the deep sea field becomes a new technical topic.
The environment of deep sea is different from that of offshore sea, the environment of deep sea is more complex, floating-based power generation platforms become mainstream, but the problem that how to make the floating platforms float on the sea more stably and realize efficient power generation is still difficult to solve is still solved.
The wave energy power generation has high cost, low conversion efficiency of the power generation device and slow development speed. Chinese patent document CN 112302877A discloses an offshore wind power and wave energy combined power generation system, which realizes the combined power generation of a power generation fan platform and an oscillating type floater, but the floater power generation system utilizes the wave to compress the gas in a gas chamber for power generation, and the working efficiency is not high. Chinese patent document CN 112283010 a discloses an expandable multi-degree-of-freedom wave energy power generation device, which adopts multiple moving units and is connected together by connecting arms, and can collect wave energy in multiple degrees of freedom, but the device of the present invention only uses hydraulic energy to generate electricity, and the power generation effect is limited by the length of the hydraulic rod and the magnitude of the moving amplitude. Chinese patent document CN 110145431 a discloses a multiple degree of freedom raft type wave energy power generation device and a power generation method, which utilize the relative displacement of two work boxes generated on the sea surface to realize the power generation of a generator through a reversing gear set, but the device is easy to be damaged in severe sea conditions and has a fragile structure.
When wind energy is converted into electric energy in wind power generation, the efficiency of capturing the wind energy by a fan reaches 40% at most, the mechanical transmission loss and the loss of the electric energy in transmission are reduced, so that the independent wind power generation device has the disadvantages of low power generation efficiency and instability, the wind power generation and the wave power generation are effectively combined, the multi-angle power generation of waves is realized by the aid of the stability of the liftable floating platform and the multi-freedom wave power generation device, and the power generation efficiency of the power generation device is remarkably improved.
Disclosure of Invention
The invention provides a floating platform-based wind energy-wave energy power generation device and a working method thereof, and aims to solve the problems that wind energy and wave energy power generation cannot be realized simultaneously, and the output instability and sustainability are low in a deep sea environment in the prior art.
The invention provides a floating platform-based wind energy-wave energy power generation device, which comprises: the device comprises a wind power generation assembly, a floating platform and a wave power generation assembly; the wind power generation assembly is arranged on a platform of the floating platform; a plurality of wave energy power generation assemblies are uniformly arranged on the periphery of the floating platform;
the wave energy power generation assembly comprises: the device comprises a first hydraulic rod, a connecting plate, a connecting rod, a floater, a moving plate driving mechanism and a hydraulic generator set; a groove is axially formed in the outer wall of the floating platform, where the wave energy power generation assembly is arranged; the moving plate driving mechanism is arranged in the floating platform; the moving plate is embedded into the groove on the floating platform and is driven by the moving plate driving mechanism to move in the groove along the axial direction; the connecting plate is horizontally arranged along the radial direction of the floating platform, one end of the connecting plate is hinged with the movable plate, the other end of the connecting plate is connected with one end of the connecting rod through a universal shaft, and the connecting plate moves along the vertical direction by taking a hinged point as an axis; one end of the first hydraulic rod is hinged to the upper part of the groove on the outer wall of the floating platform, the other end of the first hydraulic rod is hinged to the connecting plate, and the first hydraulic rod is connected with the hydraulic generator set; the other end of the connecting rod is connected with the floater through a universal shaft;
the float includes: the device comprises a floater shell, a pendulum weight, a circular track, a bottom plate, a gear set and a generator set; the circular track is horizontally fixed on the periphery of the inner wall of the floater shell; the bottom plate is horizontally fixed in the floater shell; the gear set is arranged in a space between the circular track and the bottom plate; the generator set is arranged in a space between the bottom plate and the bottom of the floater shell; the input shaft of the gear set is coaxial with the float housing; the connecting end of the pendulum weight is connected with the input shaft of the gear set, and the pendulum head moves on the circular track; an output shaft of the gear set is connected with an input shaft of the generator set; the gear set is a gear set with bidirectional input and unidirectional output.
Further, the float further comprises a pair of fins; the pair of fin wings are arranged on two sides of the outer wall of the floater shell.
Further, a height drop exists between the pair of fins fixed on the outer wall of the float shell.
Further, the float further comprises a rudder; the rudder is arranged on the outer wall of the floater shell and is coaxial with the symmetry axes of the pair of fin wings.
Further, the height of the wave-facing side of the fin wing is higher than the wave-back side of the fin wing, or the height of the wave-facing side of the fin wing is lower than the wave-back side of the fin wing.
Further, the gear set includes: the first one-way ratchet wheel, the second one-way ratchet wheel, the first gear, the second gear, the third gear, the first transmission shaft and the second transmission shaft; a unidirectional ratchet wheel in different direction is arranged between the first unidirectional ratchet wheel and the second unidirectional ratchet wheel; one end of the first transmission shaft is an input shaft of the gear set and is connected with the connecting end of the pendulum weight; the first transmission shaft is sleeved with the first one-way ratchet wheel and the second one-way ratchet wheel, and the first transmission shaft is in transmission connection with the inner ring gears of the two one-way ratchet wheels; the second transmission shaft is sleeved with the second gear and the third gear, and is in transmission connection with the second gear and the third gear; the first one-way ratchet wheel is meshed with the first gear; the first gear is meshed with the second gear; an outer ring gear of the second one-way ratchet wheel is meshed with the third gear; and an outer ring gear of the second one-way ratchet wheel is used as an output end of the gear set and is connected with the generator set.
Further, the second transmission shaft is also connected with the generator set as an output shaft of the gear set.
Further, the wave energy power generation assembly further comprises: a second hydraulic rod; the connecting plate is connected with the moving plate through the universal shaft; one end of the second hydraulic rod is hinged to the outer wall of the floating platform in the plane of the connecting plate, the other end of the second hydraulic rod is hinged to the connecting plate, and the second hydraulic rod is connected with the hydraulic generator set.
The invention also provides a working method of the wind energy-wave energy power generation device based on the floating platform, which comprises the following steps:
the wind energy-wave energy power generation device based on the floating platform floats on the sea surface through the floating platform, wind power generation is carried out through the wind power generation assembly, and wave energy power generation is carried out through the wave energy power generation assembly;
the specific working method for the wave energy power generation component to carry out wave energy power generation is as follows:
the wave drives the floater to float up and down, the floater drives the connecting plate to move up and down, left and right by taking the joint with the movable plate as a supporting point, and the connecting plate drives the first hydraulic rod and the second hydraulic rod to stretch and retract to generate electricity through the hydraulic generator set;
the wave drives the floater to swing, the pendulum weight is acted on the circular track by the swing of the floater and the inertia to do circular motion, a first transmission shaft is driven to rotate, and the circular motion of the pendulum weight is transmitted to the generator set to generate power through the gear set capable of being bidirectionally input and unidirectionally output.
Further, when the wave fluctuation is small, the moving plate driving mechanism drives the moving plate to move upwards along the groove until the highest point; when the wave fluctuation is large, the moving plate driving mechanism drives the moving plate to move downwards along the groove until the lowest point.
The invention has the beneficial effects that:
the connecting plate is connected with the movable plate which can move up and down on the outer wall of the floating platform, and when the waves fluctuate in different sizes, the space of the floater which can float up and down can be adjusted by adjusting the position of the movable plate, so that the floating amplitude of the floater is increased.
According to the invention, a set of power generation mechanism is added in the floater, the swinging of the floater in waves drives the swinging weight to do circular motion, the circular motion of the swinging weight drives the rotating shaft of the gear set to rotate to generate power, and the gear set capable of being input in different directions and outputting in the same direction is used for realizing that the generator can rotate no matter the swinging weight rotates forwards or backwards, so that continuous power generation is ensured.
According to the invention, the fin wings are added on the float shell, so that the swing amplitude of the float in waves can be increased, the driving force of the pendulum weight is increased, and the pendulum weight continuously moves. The fin wings with different heights are arranged, so that the floater can swing in one swing direction, and the movement direction of the swing weight is ensured to be unchanged. The fin wings have certain elevation angles and inclination angles, so that the swing amplitude of the floater can be further increased. When the rudder is arranged, the fin wings of the floater are always in a wave-facing state, and the floater is in a better swinging state.
The invention adopts two single-tooth ratchets which are opposite to each other to match with other gears, realizes gear sets which can input in different directions and output in the same direction, and avoids the condition that the pendulum weight cannot generate power when the motion direction of the pendulum weight is different from the rotation direction of the input shaft of the generator. Meanwhile, two transmission shafts are adopted, and a generator can be connected to the output end of the second transmission shaft, so that one-shaft input and multi-shaft output are realized, and the generating capacity is increased.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a front view of a wave energy power generation assembly in an embodiment of the invention;
FIG. 4 is a top view of a wave energy power generation assembly in an exemplary embodiment of the invention;
FIG. 5 is a side view of the wave energy power generation assembly in a particular embodiment of the invention, except for the floats;
FIG. 6 is a front view of a gear set in an embodiment of the present invention
FIG. 7 is a top view of a gear set in accordance with an embodiment of the present invention;
FIG. 8 is a top view of a gear set with circular tracks removed in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of a rudder in an embodiment of the present invention;
fig. 10 is a flow chart of energy conversion of the wave energy power generation apparatus in the embodiment of the present invention;
FIG. 11 is a graphical representation of the total energy conversion in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 9, an embodiment of the present invention provides a floating platform-based wind energy-wave energy power generation apparatus, including: the floating type wave energy power generation system comprises a wind power generation assembly 1, a floating platform 2 and a wave energy power generation assembly 3; the wind power generation assembly 1 is arranged on a platform of the floating platform 2; a plurality of wave energy power generation assemblies 3 are uniformly arranged on the periphery of the floating platform 2;
the wave energy power generation assembly 3 as shown in fig. 3-6 comprises: the hydraulic control system comprises a first hydraulic rod 31, a connecting plate 32, a connecting rod 33, a floater 34, a moving plate 35, a moving plate driving mechanism, a hydraulic generator set and a second hydraulic rod 36; a groove is axially formed in the outer wall of the floating platform 2 where the wave energy power generation assembly 3 is arranged; the moving plate driving mechanism is arranged in the floating platform 2; the moving plate 35 is embedded into a groove on the floating platform and is driven by the moving plate driving mechanism to move in the groove along the axial direction; the connecting plate 32 is horizontally arranged along the radial direction of the floating platform 2, one end of the connecting plate is connected with the moving plate 35 through a universal shaft, the other end of the connecting plate is connected with one end of the connecting rod 33 through a universal shaft, and the connecting plate 32 moves along the vertical direction by taking a hinged point as an axis; one end of a first hydraulic rod 31 is hinged to the upper part of a groove on the outer wall of the floating platform 2, the other end of the first hydraulic rod 31 is hinged to a connecting plate 32, and the first hydraulic rod 31 is connected with a hydraulic generator set; one end of the second hydraulic rod 36 is hinged on the outer wall of the floating platform 2 in the plane of the connecting plate 32, the other end of the second hydraulic rod 36 is hinged on the connecting plate 32, and the second hydraulic rod 36 is connected with the hydraulic generator set; the other end of the connecting rod 33 is connected to the float 34 via a cardan shaft.
Because the floating platform 2 is designed by itself, the fluctuation of the floating platform in the deep sea along with the sea waves is small, and the fluctuation of the sea waves in the deep sea is not large, the fluctuation amplitude of the floater is not large easily caused by the existing wave energy power generation assembly, and the hydraulic generator can not be driven to generate power by effectively driving the hydraulic rod to stretch. The connecting plate 32 is connected with the floating platform 2 through a movable plate 35, the movable plate 35 adjusts the connecting position of the connecting plate 32 and the floating platform 2 under the driving of a movable plate driving mechanism, the swing amplitude of the floater can be increased through the change of the connecting position, the higher the connecting position is, the larger the swing space is, so that when the wave fluctuation is smaller, the connecting position can be moved upwards to increase the swing amplitude space of the floater. Because the floater can not only be affected by the fluctuation of waves, but also be affected by the impact of the waves, a hydraulic rod arranged horizontally is added, so that the impact energy of the waves can be absorbed again on the basis of absorbing the fluctuation energy of the waves, and the generating capacity is increased.
The float 34 includes: a float housing 341, a pendulum weight 342, a circular track 343, a bottom plate 344, a gear set, a generator set, a pair of fin wings 345, a rudder 346; the circular rail 343 is horizontally fixed to the circumference of the inner wall of the float housing 341; the bottom plate 344 is horizontally fixed in the float housing 341; the gear set is disposed in the space between the circular track 343 and the base plate 344; the generator set is disposed in the space between the bottom plate 344 and the bottom of the float housing 341; the input shaft of the gear set is coaxial with the float housing 341; the connecting end of the pendulum weight 342 is connected with the input shaft of the gear set, and the pendulum head moves on the circular track 343; the output shaft of the gear set is connected with the input shaft of the generator set; the gear set is a gear set with bidirectional input and unidirectional output; the pair of fin wings are arranged on two sides of the outer wall of the floater shell; the rudder is arranged on the outer wall of the floater shell and is coaxial with the symmetry axes of the pair of fin wings. (ii) a In order to better absorb wave energy, a height drop exists between the pair of fin wings fixed on the outer wall of the floater shell, and/or the height of the wave-facing side of the fin wings is higher than that of the back wave side of the fin wings, or the height of the wave-facing side of the fin wings is lower than that of the back wave side of the fin wings.
The power generation process in the floater is to drive the gear set by clockwise or anticlockwise rotation of the pendulum weight and then drive the generator to generate power through the gear set. The power generation effect is directly influenced by the movement process of the pendulum weight. The swinging process of the pendulum weight is that when the floater inclines, the pendulum weight is driven to move by inertia generated by the self gravity of the pendulum weight. The magnitude of the inclination of the float directly affects the movement of the pendulum. The fin wing is added on the float shell, so that the fluctuation of waves can be better absorbed, and the inclination angle of the float is increased. The direction of the floater can be controlled by adding the rudder, so that the fin wings always face the advancing direction of waves, the fin wings with staggered heights can also enable the inclination process of the floater to be continuous when facing waves, the pendulum weight can continuously move along one direction, and the energy loss of the pendulum weight when the moving direction is changed is avoided. The angle of the fins is also to increase the magnitude of the inclination of the float.
As shown in fig. 6-8, the gear set includes: a first one-way ratchet wheel 41, a second one-way ratchet wheel 42, a first gear 43, a second gear 44, a third gear 45, a first transmission shaft 46 and a second transmission shaft 47; a unidirectional ratchet wheel is arranged between the first unidirectional ratchet wheel 41 and the second unidirectional ratchet wheel 42; one end of the first transmission shaft 46 is an input shaft of the gear set and is connected with the connecting end of the pendulum weight 342; the first transmission shaft 46 is sleeved with the first one-way ratchet wheel 41 and the second one-way ratchet wheel 42, and the first transmission shaft 46 is in transmission connection with inner ring gears of the two one-way ratchet wheels; the second transmission shaft 47 is sleeved with a second gear 44 and a third gear 45, and the second transmission shaft 47 is in transmission connection with the second gear 44 and the third gear 45; the first one-way ratchet 41 is meshed with the first gear 43; the first gear 43 meshes with the second gear 44; the outer ring gear of the second one-way ratchet wheel 42 is meshed with the third gear 45; the outer ring gear of the second one-way ratchet wheel 42 is used as the output end of the gear set and is connected with the generator set; the second drive shaft 47 is also connected to the generator set as an output shaft of the gear set.
The first one-way ratchet wheel is assumed to be in anticlockwise linkage, the second one-way ratchet wheel is in clockwise linkage, when the pendulum weight rotates anticlockwise, the inner ring gear of the first one-way ratchet wheel drives the outer ring gear to rotate anticlockwise together, the outer ring gear of the second one-way ratchet wheel does not rotate anticlockwise together with the inner ring gear because of clockwise linkage, the first gear rotates clockwise, the second gear rotates anticlockwise, the third gear also rotates anticlockwise coaxially with the second gear, the second transmission shaft also rotates anticlockwise, the outer gear of the second one-way ratchet wheel rotates clockwise to drive one generator input shaft of the generator set to rotate clockwise to generate power, and the anticlockwise rotation of the second rotation shaft drives the other generator input shaft of the generator set to rotate anticlockwise to generate power;
when the pendulum weight rotates clockwise, the first one-way ratchet wheel is linked anticlockwise, so that the outer ring gear cannot rotate clockwise along with the inner ring gear, the second one-way ratchet wheel is linked clockwise, the inner ring gear of the second one-way ratchet wheel drives the outer ring gear to rotate clockwise together, the third gear rotates anticlockwise, the third gear is coaxial with the second gear, the second gear also rotates anticlockwise, the second transmission shaft also rotates anticlockwise, the outer gear of the second one-way ratchet wheel rotates clockwise to drive one generator input shaft of the generator set to rotate clockwise to generate electricity, and the anticlockwise rotation of the second rotation shaft can drive the other generator input shaft of the generator set to rotate anticlockwise to generate electricity. The gear matching of the gear set provided by the invention can realize bidirectional input and unidirectional double-shaft output of the gear set.
As shown in fig. 9, the rudder 346 is formed in a cross shape, one end is connected to the float housing 341, and the other three ends are provided with guide fins, so that the sensitivity of the rudder 346 can be improved.
The invention also provides a working method of the wind energy-wave energy power generation device based on the floating platform, which comprises the following steps:
the wind energy-wave energy power generation device based on the floating platform floats on the sea surface through the floating platform, wind power generation is carried out through the wind power generation assembly, and wave energy power generation is carried out through the wave energy power generation assembly;
the specific working method for the wave energy power generation component to carry out wave energy power generation is as follows:
the wave drives the floater to float up and down, the floater drives the connecting plate to move up and down, left and right by taking the joint with the movable plate as a supporting point, and the connecting plate drives the first hydraulic rod and the second hydraulic rod to stretch and retract to generate electricity through the hydraulic generator set; when the wave fluctuation is small, the moving plate driving mechanism drives the moving plate to move upwards along the groove until the highest point; when the wave fluctuation is large, the moving plate driving mechanism drives the moving plate to move downwards along the groove until the moving plate reaches the lowest point;
the wave drives the floater to swing, the pendulum weight is acted on the circular track by the swing of the floater and the inertia to do circular motion, a first transmission shaft is driven to rotate, and the circular motion of the pendulum weight is transmitted to the generator set to generate power through the gear set capable of being bidirectionally input and unidirectionally output.
As shown in fig. 10, when the wave energy power generation device generates electricity, the power electronic energy conversion system can convert irregular alternating currents generated by the generators in the floater into usable power frequency alternating currents, rectify the power frequency alternating currents through the AC/DC conversion module and the DC/AC conversion module, and finally output the power frequency alternating currents to the power grid through the cable. The AC/DC conversion module and the DC/AC conversion module may be connected to the respective generators of the wave energy power plant by means of respective conductors, so that these modules may also be mounted in a buoy, thereby reducing the effect of the waves thereon.
As shown in fig. 11, the power transmission circuit includes output circuits of three power generation devices, which are the output circuit of the wind power generation assembly 1, the output circuit of the hydraulic power generator 5, and the output circuit of the in-float power generator 6. The output end of the wind power generation component 1 is connected with a rectifier 18, and two ends of the rectifier 18 are connected in parallel with an electric energy storage module 19 for storing direct current output by the rectifier 18; the output end of the hydraulic generator 5 is connected with an AC/DC rectifier and a DC/AC rectifier so as to realize the rectification of current, and meanwhile, two ends of the two rectifiers are connected in parallel with an electric energy storage module 19 to store the direct current output by the rectifiers; the output end of the float internal gear generator 6 is connected with an AC/DC rectifier and a DC/AC rectifier, and an electric energy storage module 19 is connected in parallel at two ends of the two rectifiers. The output lines of the output circuits of the three power generation devices are converged into a bus bar in the central upright post for output, the bus bar is connected with an external inverter 70 through a submarine cable, the voltage in the circuits is boosted through a boost controller 71, and finally current is output to a power grid, so that power supply is realized.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. A wind energy-wave energy power generation device based on a floating platform is characterized by comprising: the device comprises a wind power generation assembly, a floating platform and a wave power generation assembly; the wind power generation assembly is arranged on a platform of the floating platform; a plurality of wave energy power generation assemblies are uniformly arranged on the periphery of the floating platform;
the wave energy power generation assembly comprises: the device comprises a first hydraulic rod, a connecting plate, a connecting rod, a floater, a moving plate driving mechanism and a hydraulic generator set; a groove is axially formed in the outer wall of the floating platform, where the wave energy power generation assembly is arranged; the moving plate driving mechanism is arranged in the floating platform; the moving plate is embedded into the groove on the floating platform and is driven by the moving plate driving mechanism to move in the groove along the axial direction; the connecting plate is horizontally arranged along the radial direction of the floating platform, one end of the connecting plate is hinged with the movable plate, the other end of the connecting plate is connected with one end of the connecting rod through a universal shaft, and the connecting plate moves along the vertical direction by taking a hinged point as an axis; one end of the first hydraulic rod is hinged to the upper part of the groove on the outer wall of the floating platform, the other end of the first hydraulic rod is hinged to the connecting plate, and the first hydraulic rod is connected with the hydraulic generator set; the other end of the connecting rod is connected with the floater through a universal shaft;
the float includes: the device comprises a floater shell, a pendulum weight, a circular track, a bottom plate, a gear set and a generator set; the circular track is horizontally fixed on the periphery of the inner wall of the floater shell; the bottom plate is horizontally fixed in the floater shell; the gear set is arranged in a space between the circular track and the bottom plate; the generator set is arranged in a space between the bottom plate and the bottom of the floater shell; the input shaft of the gear set is coaxial with the float housing; the connecting end of the pendulum weight is connected with the input shaft of the gear set, and the pendulum head moves on the circular track; an output shaft of the gear set is connected with an input shaft of the generator set; the gear set is a gear set with bidirectional input and unidirectional output.
2. The floating platform based wind-wave energy power plant of claim 1, wherein said buoy further comprises a pair of fins; the pair of fin wings are arranged on two sides of the outer wall of the floater shell.
3. The vessel-based wind-wave energy power plant of claim 2, wherein a height drop is provided for the securement of a pair of said fins to the exterior wall of said hull.
4. The floating platform based wind-wave energy power plant according to claim 2 or 3, wherein the fin wing has a higher elevation on the wave-facing side than on the wave-back side of the fin wing, or a lower elevation on the wave-facing side than on the wave-back side of the fin wing.
5. The floating platform based wind-wave energy power plant of claim 2, wherein said buoy further comprises a rudder; the rudder is arranged on the outer wall of the floater shell and is coaxial with the symmetry axes of the pair of fin wings.
6. The vessel-based wind-wave energy power plant of claim 1, wherein said gear set comprises: the first one-way ratchet wheel, the second one-way ratchet wheel, the first gear, the second gear, the third gear, the first transmission shaft and the second transmission shaft; a unidirectional ratchet wheel in different direction is arranged between the first unidirectional ratchet wheel and the second unidirectional ratchet wheel; one end of the first transmission shaft is an input shaft of the gear set and is connected with the connecting end of the pendulum weight; the first transmission shaft is sleeved with the first one-way ratchet wheel and the second one-way ratchet wheel, and the first transmission shaft is in transmission connection with the inner ring gears of the two one-way ratchet wheels; the second transmission shaft is sleeved with the second gear and the third gear, and is in transmission connection with the second gear and the third gear; the first one-way ratchet wheel is meshed with the first gear; the first gear is meshed with the second gear; an outer ring gear of the second one-way ratchet wheel is meshed with the third gear; and an outer ring gear of the second one-way ratchet wheel is used as an output end of the gear set and is connected with the generator set.
7. The vessel-based wind-wave energy power plant of claim 6, wherein said second drive shaft is also connected to said generator set as an output shaft of said gear set.
8. The floating platform based wind-wave energy power plant of claim 1, wherein said wave energy power generation assembly further comprises: a second hydraulic rod; the connecting plate is connected with the moving plate through the universal shaft; one end of the second hydraulic rod is hinged to the outer wall of the floating platform in the plane of the connecting plate, the other end of the second hydraulic rod is hinged to the connecting plate, and the second hydraulic rod is connected with the hydraulic generator set.
9. A method of operating a floating platform based wind-wave energy power plant, adapted for use in a floating platform based wind-wave energy power plant according to claims 1-8, comprising:
the wind energy-wave energy power generation device based on the floating platform floats on the sea surface through the floating platform, wind power generation is carried out through the wind power generation assembly, and wave energy power generation is carried out through the wave energy power generation assembly;
the specific working method for the wave energy power generation component to carry out wave energy power generation is as follows:
the wave drives the floater to float up and down, the floater drives the connecting plate to move up and down, left and right by taking the joint with the movable plate as a supporting point, and the connecting plate drives the first hydraulic rod and the second hydraulic rod to stretch and retract to generate electricity through the hydraulic generator set;
the wave drives the floater to swing, the pendulum weight is acted on the circular track by the swing of the floater and the inertia to do circular motion, a first transmission shaft is driven to rotate, and the circular motion of the pendulum weight is transmitted to the generator set to generate power through the gear set capable of being bidirectionally input and unidirectionally output.
10. The method of operating a floating platform based wind-wave energy power plant of claim 9, further comprising: when the wave fluctuation is small, the moving plate driving mechanism drives the moving plate to move upwards along the groove until the highest point; when the wave fluctuation is large, the moving plate driving mechanism drives the moving plate to move downwards along the groove until the lowest point.
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| CN115506942A (en) * | 2022-09-30 | 2022-12-23 | 南通大学 | Floating wing plate of wave power generation device |
| CN115506942B (en) * | 2022-09-30 | 2023-08-15 | 南通大学 | Floating wing plate of wave energy power generation device |
| WO2024115459A1 (en) | 2022-11-30 | 2024-06-06 | Politecnico Di Torino | Hybrid platform for extracting wind and wave energy |
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