CN113217264A - Tower section of thick bamboo wake vortex energy capture device - Google Patents
Tower section of thick bamboo wake vortex energy capture device Download PDFInfo
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- CN113217264A CN113217264A CN202110591194.7A CN202110591194A CN113217264A CN 113217264 A CN113217264 A CN 113217264A CN 202110591194 A CN202110591194 A CN 202110591194A CN 113217264 A CN113217264 A CN 113217264A
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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
- F03B13/26—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 tide energy
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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"
- F03B13/18—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/181—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
- F03B13/1815—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with an up-and-down movement
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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
- F03B13/26—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 tide energy
- F03B13/262—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 tide energy using the relative movement between a tide-operated member and another member
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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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- 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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Oceanography (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a tower barrel wake vortex energy capture device which comprises an underwater tower barrel and a hydraulic motor generator assembly, wherein an upper swing arm assembly and a lower swing arm assembly which can rotate circumferentially are axially arranged on the underwater tower barrel; an oscillating hydrofoil system capable of pitching is arranged between the upper swing arm assembly and the lower swing arm assembly; at least two groups of swing hydraulic structures are arranged in the tower barrel, and an upper swing arm assembly and a lower swing arm assembly are respectively connected to the two swing hydraulic structures in a meshed manner; and the two swing hydraulic mechanisms are electrically connected with the hydraulic motor generator assembly, and the upper swing arm assembly and the lower swing arm assembly respectively comprise an upper swing arm front sleeve, an upper swing arm rear sleeve, a lower swing arm front sleeve and a lower swing arm rear sleeve which are in threaded connection on the tower barrel. The problem of traditional tidal energy capture device basically all need independent bearing structure to be fixed in the seabed, installation, maintenance cost are higher, and because be close to the seabed, the trend velocity of flow is slower, has restricted its performance of energy capture is solved.
Description
Technical Field
The invention relates to the technical field of ocean energy equipment, in particular to a tower barrel wake vortex energy capturing device.
Background
With the increasing demand of world energy consumption, the traditional fossil energy has limited stock and has the problem of environmental pollution, and the development and utilization of renewable energy have become global consensus. Compared with other forms of renewable energy sources, tidal current energy has the advantages of small influence of weather, high energy density, strong predictability, stable load and the like; tidal current energy power generation devices can be divided into a rotary shaft type and an oscillating wing type according to the principle of the tidal current energy power generation devices. Compared with the traditional rotary shaft type water turbine set, the oscillating hydrofoil tidal current energy capturing device has the following advantages: the structure of the rotary machine is not needed, so that the aquatic organisms are not damaged; the structure is simple, the reliability is high, and the energy acquisition efficiency is high; the oscillation speed is low, the generated noise is low, and the method is environment-friendly;
the invention provides a ground effect wing tidal current energy power generation device in Chinese invention patent CN110469452B, which drives a four-bar mechanism to operate through the up-and-down heaving movement of hydrofoils through a four-bar mechanism, a crank connecting bar and a gear rack mechanism, thereby driving a generator to generate electricity; meanwhile, the four-bar mechanism can drive the crank connecting rod and the gear rack structure to move, and then drives the hydrofoil to do periodic pitching motion through the driving wheel, so that the self-coupling of the hydrofoil heaving motion and the pitching motion is ensured, the self-coupling of the hydrofoil heaving motion and the pitching motion is realized, and the continuous energy output of the device is ensured; by utilizing the ground effect between the hydrofoils, the power generation efficiency of the oscillating hydrofoil type tidal current energy power generation device is improved, and the power generation cost is reduced;
the invention provides a semi-active hydraulic series-connection swinging hydrofoil tidal current energy capturing device in Chinese invention patent CN106401856B, which uses a slider-crank mechanism with a bidirectional hydraulic cylinder as a driving part to drive a hydrofoil to realize pitching motion of an attack angle running according to a preset rule, the hydrofoil obtains incoming current energy to do heaving motion to drive a hydrofoil swinging arm to swing in a reciprocating way, the hydrofoil swinging arm swings to drive the energy obtaining hydraulic cylinder to obtain high-pressure oil, the energy obtaining hydraulic cylinder outputs the high-pressure oil to drive a hydraulic motor and a power generation device to generate power, so that energy conversion from tidal current energy to electric energy is realized, and the effect of fully obtaining tidal current energy is achieved;
at present, the traditional tidal energy capturing device basically needs an independent supporting structure to be fixed on the seabed, the installation and maintenance cost is high, and the tidal current flow rate is slow due to the fact that the tidal current is close to the seabed, so that the exertion of the energy capturing performance is limited;
therefore, the tower barrel wake vortex energy capture device is provided.
Disclosure of Invention
The invention provides a device for capturing the wake vortex energy of a tower barrel, which aims to solve the technical problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a tail vortex energy capture device for a tower barrel comprises an underwater tower barrel and a hydraulic motor generator assembly, wherein an upper swing arm assembly and a lower swing arm assembly which can rotate circumferentially are axially arranged on the underwater tower barrel; an oscillating hydrofoil system capable of pitching is arranged between the upper swing arm assembly and the lower swing arm assembly; at least two groups of swing hydraulic structures are arranged in the underwater tower cylinder, and the upper swing arm assembly and the lower swing arm assembly are respectively connected to the two swing hydraulic structures in a meshed manner; and the two swing hydraulic mechanisms are electrically connected with the hydraulic motor generator assembly.
The oscillating hydrofoil system is arranged at the downstream of the underwater tower cylinder, and the tidal current energy in the wake vortex of the underwater tower cylinder is effectively utilized, so that the loss of the unused tidal current energy in an offshore wind farm is avoided; compared with the traditional rotating shaft type water turbine, the invention has the advantages of simple structure, flexible rotation, high energy conversion efficiency, low oscillation frequency, small influence on environment, small influence on aquatic organisms and the like.
Preferably, the upper swing arm assembly and the lower swing arm assembly respectively comprise an upper swing arm front sleeve, an upper swing arm rear sleeve, a lower swing arm front sleeve and a lower swing arm rear sleeve which are in screwed connection on the underwater tower cylinder; an upper swing arm connecting rod and a lower swing arm connecting rod are respectively arranged on the upper swing arm front sleeve and the lower swing arm front sleeve, and the tail ends of the upper swing arm connecting rod and the lower swing arm connecting rod are respectively connected with an upper swing arm bearing sleeve and a lower swing arm bearing sleeve; an oscillating hydrofoil system capable of moving in a pitching manner is arranged between the upper swing arm bearing sleeve and the lower swing arm bearing sleeve.
The swing of the upper swing arm assembly and the lower swing arm assembly is not interfered with the pitching motion of the oscillating hydrofoil by arranging the upper swing arm bearing sleeve and the lower swing arm bearing sleeve.
Preferably, the inner diameters of the upper swing arm front sleeve, the upper swing arm rear sleeve, the lower swing arm front sleeve and the lower swing arm rear sleeve are respectively provided with upper swing arm inner ring teeth and lower swing arm inner ring teeth; and the upper swing arm inner ring teeth and the lower swing arm inner ring teeth are respectively meshed and connected with the two swing hydraulic mechanisms.
The upper swing arm inner ring teeth and the lower swing arm inner ring teeth are respectively arranged on the inner diameters of the upper swing arm front sleeve, the upper swing arm rear sleeve, the lower swing arm front sleeve and the lower swing arm rear sleeve, and are conveniently matched with a swing hydraulic mechanism.
Preferably, an upper swing arm thrust ball bearing and a lower swing arm thrust ball bearing are respectively arranged on the upper swing arm front sleeve, the upper swing arm rear sleeve, the lower swing arm front sleeve and the lower swing arm rear sleeve; and the seat rings of the upper swing arm thrust ball bearing and the lower swing arm thrust ball bearing are arranged on the underwater tower cylinder, so that the upper swing arm assembly and the lower swing arm assembly can rotate circumferentially on the underwater tower cylinder.
Go up swing arm fore-stock and last swing arm after-sleeve, lower swing arm fore-stock and lower swing arm after-sleeve and all pass through bolted connection, and go up swing arm thrust ball bearing and all set up on the tower section of thick bamboo under water with the seat circle of lower swing arm thrust ball bearing, make it upward the swing arm subassembly and the swing arm subassembly homoenergetic is free to swing round the tower section of thick bamboo under water, and can high-efficiently transmit the mechanical energy that the oscillating hydrofoil was caught.
Preferably, the upper swing arm front sleeve, the upper swing arm rear sleeve, the lower swing arm front sleeve and the lower swing arm rear sleeve are all semicircular sleeves.
Preferably, the oscillating hydrofoil system comprises an oscillating hydrofoil arranged between the upper swing arm assembly and the lower swing arm assembly; the upper end surface and the lower end surface of the oscillating hydrofoil are provided with rotating shafts; the upper swing arm assembly is connected with a stepping motor, and the output end of the stepping motor is connected with a rotating shaft.
Preferably, the oscillating hydrofoil is made of composite materials, and a torsion spring is arranged between the two rotating shafts and the upper swing arm assembly and between the two rotating shafts and the lower swing arm assembly.
The oscillating hydrofoil made of the composite material can provide buoyancy for the upper and lower swing arm assemblies and avoid the effect of vertical bending moment, so that the stability and the service life of the upper and lower swing arm assemblies are improved, the torsion spring is arranged on the rotating shaft of the oscillating hydrofoil, the storage capacity of the oscillating hydrofoil can be improved when the oscillating hydrofoil does pitching motion, and the control of the stepping motor on the pitching motion of the oscillating hydrofoil is facilitated.
Preferably, the two swing hydraulic mechanisms comprise a first rotating shaft gear meshed with the inner ring teeth of the upper swing arm and a second rotating shaft gear meshed with the inner ring teeth of the lower swing arm respectively; the first rotating shaft gear and the second rotating shaft gear are respectively connected with a first swing hydraulic cylinder and a second swing hydraulic cylinder; the first swing hydraulic cylinder and the second swing hydraulic cylinder are both arranged inside the underwater tower cylinder.
Preferably, the oscillating hydrofoil system is mounted downstream of the underwater tower; and sealing rings are arranged between the upper swing arm assembly and the underwater tower cylinder and between the lower swing arm assembly and the underwater tower cylinder.
Preferably, the operation method of the tower wake vortex energy capture device comprises the following steps:
the method comprises the following steps: assembling a capturing device at the downstream of the offshore wind turbine underwater tower, wherein under the action of incoming flow, the oscillating hydrofoil can drive the upper swing arm assembly and the lower swing arm assembly to swing around the offshore wind turbine underwater tower in an arc shape;
step two: when the upper swing arm assembly and the lower swing arm assembly swing in an arc shape, the phase difference between the pitching motion and the arc-shaped swing of the oscillating hydrofoil around the rotating shaft is kept at pi/2 by the stepping motor, so that the lift force borne by the oscillating hydrofoil is always consistent with the swing direction, namely, the lift force is kept to do positive work, and the oscillating hydrofoil system can capture tidal current energy from the tail vortex of the underwater tower;
step three: when the oscillating hydrofoil system captures tidal current energy, the upper swing arm assembly and the lower swing arm assembly are also driven to swing, and the upper swing arm assembly and the lower swing arm assembly drive the first swing hydraulic cylinder and the second swing hydraulic cylinder to rotate through the meshing of the inner ring teeth of the upper swing arm and the inner ring teeth of the lower swing arm with the first rotating shaft gear and the second rotating shaft gear, so that the tidal current energy captured by the oscillating hydrofoil is converted into pressure energy;
step four: and finally, inputting the pressure energy into a hydraulic motor power generation assembly to convert the pressure energy into electric power.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the prior art, the invention is skillfully installed on the underwater tower cylinder of the offshore wind turbine, and the tidal current energy is captured by the oscillating hydrofoil system, thereby effectively avoiding the unused loss of the tidal current energy in the offshore wind farm; 2. compared with the traditional rotating shaft type water turbine, the rotating shaft type water turbine has the advantages that the structure is more compact, the rotation is more flexible, the conversion efficiency is higher, the oscillation frequency is lower, the influence on the environment is smaller, and the environment-friendly effect is stronger.
Drawings
FIG. 1 is a schematic structural diagram of a wake vortex energy capture device of a tower according to the present invention;
FIG. 2 is a schematic view of an oscillating hydrofoil structure in a wake vortex energy capturing device of a tower according to the present invention;
FIG. 3 is a schematic structural view of an upper swing arm in the wake vortex energy capturing device of the tower of the present invention;
FIG. 4 is a schematic view of a lower swing arm structure of a tower wake vortex energy capturing device according to the present invention;
FIG. 5 is an assembly diagram of the upper and lower swing arms and the oscillating hydrofoil in the device for capturing the wake vortex energy of the tower.
In the figure: 1. an underwater tower cylinder; 2-1, mounting a swing arm front sleeve; 2-2, an upper swing arm connecting rod; 2-3, mounting a swing arm bearing sleeve; 2-4, mounting a rear barrel sleeve of the swing arm; 2-5, upper swing arm inner ring teeth; 2-6, an upper swing arm thrust ball bearing; 3. oscillating the hydrofoil; 3-1, a rotating shaft; 4-1, a lower swing arm front cylinder sleeve; 4-2, a lower swing arm connecting rod; 4-3, a lower swing arm bearing sleeve; 4-4, a lower swing arm rear cylinder sleeve; 4-5, lower swing arm inner ring teeth; 4-6, a lower swing arm thrust ball bearing; 5. a stepping motor; 6. a seal ring; 7-1, a first rotating shaft gear; 7-2, a first swing hydraulic cylinder; 8-1, a rotating shaft gear II; 8-2 and a second swing hydraulic cylinder.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example one
Referring to fig. 1-5, a tower barrel wake vortex energy capturing device includes an underwater tower barrel 1 and a hydraulic motor generator assembly, wherein an upper swing arm assembly and a lower swing arm assembly which can rotate circumferentially are axially arranged on the underwater tower barrel 1; an oscillating hydrofoil system capable of pitching is arranged between the upper swing arm assembly and the lower swing arm assembly; at least two groups of swing hydraulic structures are arranged in the underwater tower cylinder 1, and an upper swing arm assembly and a lower swing arm assembly are respectively connected to the two swing hydraulic structures in a meshed manner; and the two swing hydraulic mechanisms are electrically connected with the hydraulic motor generator assembly.
The oscillating hydrofoil system is installed at the downstream of the underwater tower cylinder 1, the upper end surface and the lower end surface of the oscillating hydrofoil 3 are connected with a rotating shaft 3-1, a torsion spring is arranged on the rotating shaft 3-1, so that the oscillating hydrofoil can store energy during pitching motion, the rotating shaft 3-1 of the oscillating hydrofoil 3 is controlled by a stepping motor 5, the pitching motion stability of the oscillating hydrofoil 3 is kept, the oscillating hydrofoil 3 is made of composite materials and can provide buoyancy for an upper swing arm assembly and a lower swing arm assembly, the upper swing arm assembly, the lower swing arm assembly and the underwater tower cylinder 1 are connected through an upper swing arm thrust ball bearing 2-6 and a lower swing arm thrust ball bearing 4-6, the structural stability of the underwater tower cylinder 1 is kept, the torque captured by the oscillating hydrofoil system can be efficiently transmitted between the upper swing arm assembly and the lower swing arm assembly, and the inner diameter and the outer diameter of the upper swing arm thrust ball bearing 2-6 and the lower swing arm thrust ball bearing 4-6 are both connected with the upper swing arm thrust ball bearing The assembly is tightly connected with the lower swing arm assembly, and the upper swing arm inner ring teeth 2-5 and the lower swing arm inner ring teeth 4-5 in the upper swing arm assembly and the lower swing arm assembly are respectively meshed with the rotating shaft gear I7-1 and the rotating shaft gear II 8-1, so that the swing hydraulic cylinder I7-2 and the swing hydraulic cylinder II 8-2 can be driven, and mechanical energy is converted into pressure energy.
Preferably, the upper swing arm assembly and the lower swing arm assembly respectively comprise an upper swing arm front sleeve 2-1, an upper swing arm rear sleeve 2-4, a lower swing arm front sleeve 4-1 and a lower swing arm rear sleeve 4-4 which are in threaded connection with the underwater tower cylinder 1; an upper swing arm connecting rod 2-2 and a lower swing arm connecting rod 4-2 are respectively arranged on the upper swing arm front sleeve 2-1 and the lower swing arm front sleeve 4-1, and the tail ends of the upper swing arm connecting rod 2-2 and the lower swing arm connecting rod 4-2 are respectively connected with an upper swing arm bearing sleeve 2-3 and a lower swing arm bearing sleeve 4-3; an oscillating hydrofoil system capable of pitching is arranged between the upper swing arm bearing sleeve 2-3 and the lower swing arm bearing sleeve 4-3.
The swing of the upper swing arm assembly and the lower swing arm assembly is not interfered with the pitching motion of the oscillating hydrofoil 3 by arranging the upper swing arm bearing sleeve 2-3 and the lower swing arm bearing sleeve 4-3.
Preferably, the inner diameters of the upper swing arm front sleeve 2-1, the upper swing arm rear sleeve 2-4, the lower swing arm front sleeve 4-1 and the lower swing arm rear sleeve 4-4 are respectively provided with upper swing arm inner ring teeth 2-5 and lower swing arm inner ring teeth 4-5; the upper swing arm inner ring teeth 2-5 and the lower swing arm inner ring teeth 4-5 are respectively meshed with the two swing hydraulic mechanisms.
The upper swing arm inner ring teeth 2-5 and the lower swing arm inner ring teeth 4-5 are respectively arranged on the inner diameters of the upper swing arm front sleeve 2-1, the upper swing arm rear sleeve 2-4, the lower swing arm front sleeve 4-1 and the lower swing arm rear sleeve 4-4, and are conveniently matched with a swing hydraulic mechanism.
Preferably, an upper swing arm thrust ball bearing 2-6 and a lower swing arm thrust ball bearing 4-6 are respectively arranged on the upper swing arm front sleeve 2-1, the upper swing arm rear sleeve 2-4, the lower swing arm front sleeve 4-1 and the lower swing arm rear sleeve 4-4; the seat rings of the upper swing arm thrust ball bearings 2-6 and the lower swing arm thrust ball bearings 4-6 are arranged on the underwater tower cylinder 1, so that the upper swing arm assembly and the lower swing arm assembly can rotate circumferentially on the underwater tower cylinder 1.
The upper swing arm front sleeve 2-1, the upper swing arm rear sleeve 2-2, the lower swing arm front sleeve 4-1 and the lower swing arm rear sleeve 4-4 are connected through bolts, and seat rings of the upper swing arm thrust ball bearing 2-6 and the lower swing arm thrust ball bearing 4-6 are arranged on the underwater tower cylinder 1, so that the upper swing arm assembly and the lower swing arm assembly can freely swing around the underwater tower cylinder 1, and mechanical energy captured by the oscillating hydrofoil 3 can be efficiently transmitted.
Preferably, the upper swing arm front sleeve 2-1, the upper swing arm rear sleeve 2-4, the lower swing arm front sleeve 4-1 and the lower swing arm rear sleeve 4-4 are all semicircular sleeves.
Make things convenient for the concatenation installation between the part, improved staff's ann and torn open efficiency, and the laminating nature is more firm.
Preferably, the oscillating hydrofoil system comprises an oscillating hydrofoil 3 arranged between an upper swing arm assembly and a lower swing arm assembly; the upper end surface and the lower end surface of the oscillating hydrofoil 3 are both provided with a rotating shaft 3-1; the upper swing arm component is connected with a stepping motor 5, and the output end of the stepping motor 5 is connected with a rotating shaft 3-1.
Preferably, the oscillating hydrofoil 3 is made of composite material, and a torsion spring is arranged between the two rotating shafts 3-1 and the upper swing arm assembly and the lower swing arm assembly.
The oscillating hydrofoil 3 is made of composite materials, so that buoyancy can be provided for the upper and lower swing arm assemblies, the upper and lower swing arm assemblies are prevented from being affected by bending moment in the vertical direction, the stability and the service life of the upper and lower swing arm assemblies are improved, the torsion spring is arranged on the rotating shaft 3-1 of the oscillating hydrofoil 3, the storage capacity of the oscillating hydrofoil 3 during pitching motion can be realized, and the control of the stepping motor 5 on the pitching motion of the oscillating hydrofoil 3 is facilitated.
Preferably, the two swing hydraulic mechanisms comprise a first rotating shaft gear 7-1 meshed with the inner ring teeth 2-5 of the upper swing arm and a second rotating shaft gear 8-1 meshed with the inner ring teeth 4-5 of the lower swing arm respectively; the rotating shaft gear I7-1 and the rotating shaft gear II 8-1 are respectively connected with a swing hydraulic cylinder I7-2 and a swing hydraulic cylinder II 8-2; the first swing hydraulic cylinder 7-2 and the second swing hydraulic cylinder 8-2 are both arranged inside the underwater tower barrel 1.
Preferably, the oscillating hydrofoil system is installed downstream of the underwater tower 1; and sealing rings 6 are arranged between the upper swing arm assembly and the underwater tower barrel 1 and between the lower swing arm assembly and the underwater tower barrel 1.
The sealing performance between the upper swing arm assembly and the underwater tower barrel 1 is enhanced.
Example two
The embodiment is based on the first embodiment;
a method of operating a tower wake vortex energy capture device, the method comprising the steps of:
the method comprises the following steps: the capturing device is assembled at the downstream of the offshore wind turbine underwater tower cylinder 1, and the oscillating hydrofoil 3 drives the upper swing arm assembly and the lower swing arm assembly to swing around the offshore wind turbine underwater tower cylinder 1 in an arc shape under the action of incoming flow;
step two: when the upper swing arm assembly and the lower swing arm assembly swing in an arc shape, the phase difference between the pitching motion and the arc-shaped swing of the oscillating hydrofoil 3 around the rotating shaft 3-1 is kept at pi/2 by the stepping motor 5, so that the lifting force borne by the oscillating hydrofoil 3 is always consistent with the swing direction, namely the lifting force is kept to do positive work, and the oscillating hydrofoil system can capture tidal current energy from the wake vortex of the underwater tower 1;
step three: when the oscillating hydrofoil system captures tidal current energy, the upper swing arm assembly and the lower swing arm assembly are also driven to swing, and the upper swing arm assembly and the lower swing arm assembly are meshed with the rotating shaft gear I7-1 and the rotating shaft gear II 8-1 through upper swing arm inner ring teeth 2-5 and lower swing arm inner ring teeth 4-5 to drive the swinging hydraulic cylinder I7-2 and the swinging hydraulic cylinder II 8-2 to rotate, so that the tidal current energy captured by the oscillating hydrofoil 3 is converted into pressure energy;
step four: and finally, inputting the pressure energy into a hydraulic motor power generation assembly to convert the pressure energy into electric power.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a tower section of thick bamboo wake vortex energy capture device, includes tower section of thick bamboo (1) and hydraulic motor generator subassembly under water, its characterized in that: an upper swing arm assembly and a lower swing arm assembly which can rotate circumferentially are axially arranged on the underwater tower cylinder (1); an oscillating hydrofoil system capable of pitching is arranged between the upper swing arm assembly and the lower swing arm assembly; at least two groups of swing hydraulic structures are arranged in the underwater tower cylinder (1), and the upper swing arm assembly and the lower swing arm assembly are respectively connected to the two swing hydraulic structures in a meshed manner; and the two swing hydraulic mechanisms are electrically connected with the hydraulic motor generator assembly.
2. The tower wake vortex energy capture device of claim 1, wherein: the upper swing arm assembly and the lower swing arm assembly respectively comprise an upper swing arm front sleeve (2-1), an upper swing arm rear sleeve (2-4), a lower swing arm front sleeve (4-1) and a lower swing arm rear sleeve (4-4) which are in screwed connection with the underwater tower cylinder (1); an upper swing arm connecting rod (2-2) and a lower swing arm connecting rod (4-2) are respectively arranged on the upper swing arm front sleeve (2-1) and the lower swing arm front sleeve (4-1), and the tail ends of the upper swing arm connecting rod (2-2) and the lower swing arm connecting rod (4-2) are respectively connected with an upper swing arm bearing sleeve (2-3) and a lower swing arm bearing sleeve (4-3); an oscillating hydrofoil system capable of moving in a pitching manner is arranged between the upper swing arm bearing sleeve (2-3) and the lower swing arm bearing sleeve (4-3).
3. The tower wake vortex energy capture device of claim 2, wherein: the inner diameters of the upper swing arm front sleeve (2-1), the upper swing arm rear sleeve (2-4), the lower swing arm front sleeve (4-1) and the lower swing arm rear sleeve (4-4) are respectively provided with upper swing arm inner ring teeth (2-5) and lower swing arm inner ring teeth (4-5); the upper swing arm inner ring teeth (2-5) and the lower swing arm inner ring teeth (4-5) are respectively in meshed connection with the two swing hydraulic mechanisms.
4. The tower wake vortex energy capture device of claim 2, wherein: an upper swing arm thrust ball bearing (2-6) and a lower swing arm thrust ball bearing (4-6) are respectively arranged on the upper swing arm front sleeve (2-1), the upper swing arm rear sleeve (2-4), the lower swing arm front sleeve (4-1) and the lower swing arm rear sleeve (4-4); and seat rings of the upper swing arm thrust ball bearings (2-6) and the lower swing arm thrust ball bearings (4-6) are arranged on the underwater tower cylinder (1), so that the upper swing arm assembly and the lower swing arm assembly can rotate circumferentially on the underwater tower cylinder (1).
5. The tower wake vortex energy capture device of claim 4, wherein: the upper swing arm front sleeve (2-1), the upper swing arm rear sleeve (2-4), the lower swing arm front sleeve (4-1) and the lower swing arm rear sleeve (4-4) are all semicircular sleeves.
6. The tower wake vortex energy capture device of claim 1, wherein: the oscillating hydrofoil system comprises an oscillating hydrofoil (3) arranged between the upper swing arm assembly and the lower swing arm assembly; the upper end surface and the lower end surface of the oscillating hydrofoil (3) are provided with rotating shafts (3-1); the upper swing arm assembly is connected with a stepping motor (5), and the output end of the stepping motor (5) is connected with a rotating shaft (3-1).
7. The tower wake vortex energy capture device of claim 6, wherein: the oscillating hydrofoil (3) is made of composite materials, and a torsion spring is arranged between the two rotating shafts (3-1) and the upper swing arm assembly and the lower swing arm assembly.
8. The tower wake vortex energy capture device of claim 1 or 3, wherein: the two swing hydraulic mechanisms comprise a first rotating shaft gear (7-1) meshed with the inner ring teeth (2-5) of the upper swing arm and a second rotating shaft gear (8-1) meshed with the inner ring teeth (4-5) of the lower swing arm respectively; the first rotating shaft gear (7-1) and the second rotating shaft gear (8-1) are respectively connected with a first swing hydraulic cylinder (7-2) and a second swing hydraulic cylinder (8-2); the first swing hydraulic cylinder (7-2) and the second swing hydraulic cylinder (8-2) are arranged inside the underwater tower drum (1).
9. The tower wake vortex energy capture device of claim 1, wherein: the oscillating hydrofoil system is arranged at the downstream of the underwater tower (1); and sealing rings (6) are arranged between the upper swing arm assembly and the underwater tower cylinder (1) and between the lower swing arm assembly and the underwater tower cylinder (1).
10. An operation method of a tower barrel wake vortex energy capture device is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: the capturing device is assembled at the downstream of the offshore wind turbine underwater tower cylinder (1), and under the action of incoming flow, the oscillating hydrofoil (3) can drive the upper swing arm assembly and the lower swing arm assembly to swing around the offshore wind turbine underwater tower cylinder (1) in an arc shape;
step two: when the upper swing arm assembly and the lower swing arm assembly swing in an arc shape, the phase difference between the pitching motion and the arc-shaped swing of the oscillating hydrofoil (3) around the rotating shaft (3-1) is kept at pi/2 by the stepping motor (5), so that the lifting force borne by the oscillating hydrofoil (3) is always consistent with the swing direction, namely the lifting force is kept to perform positive work, and the oscillating hydrofoil system can capture tidal current energy from the wake vortex of the underwater tower cylinder (1);
step three: when the oscillating hydrofoil system captures tidal current energy, the upper swing arm assembly and the lower swing arm assembly are also driven to swing, and the upper swing arm assembly and the lower swing arm assembly drive the first oscillating hydraulic cylinder (7-2) and the second oscillating hydraulic cylinder (8-2) to rotate through the meshing of upper swing arm inner ring teeth (2-5) and lower swing arm inner ring teeth (4-5) with the first rotating shaft gear (7-1) and the second rotating shaft gear (8-1), so that the tidal current energy captured by the oscillating hydrofoil (3) is converted into pressure energy;
step four: and finally, inputting the pressure energy into a hydraulic motor power generation assembly to convert the pressure energy into electric power.
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