CN111188714A - Efficient wave energy absorption device - Google Patents

Efficient wave energy absorption device Download PDF

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Publication number
CN111188714A
CN111188714A CN202010126119.9A CN202010126119A CN111188714A CN 111188714 A CN111188714 A CN 111188714A CN 202010126119 A CN202010126119 A CN 202010126119A CN 111188714 A CN111188714 A CN 111188714A
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CN
China
Prior art keywords
transmission shaft
middle transmission
wave energy
outer frame
energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010126119.9A
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Chinese (zh)
Inventor
卢佳亮
陈楚豪
杨金明
伍明慧
刘青林
欧金
莫凯雯
黄志涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
South China University of Technology SCUT
Original Assignee
South China University of Technology SCUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN202010126119.9A priority Critical patent/CN111188714A/en
Publication of CN111188714A publication Critical patent/CN111188714A/en
Pending legal-status Critical Current

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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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/14—Rotors having adjustable blades
    • 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
    • F03B13/22—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 flow of water resulting from wave movements to drive a motor or turbine
    • 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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • F03B3/123—Blades, their form or construction specially designed as adjustable blades, e.g. for Kaplan-type turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/302—Segmented or sectional blades
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention discloses a wave energy absorbing device which comprises a middle transmission shaft, an impeller structure and a connecting piece used for being connected with external equipment, wherein the middle transmission shaft is vertically arranged, the impeller structure comprises an outer frame and four blades, the inner side of the outer frame is fixedly connected with the side wall of the middle transmission shaft, the four blades are all positioned between the outer frame and the middle transmission shaft and are sequentially arranged from top to bottom, the top ends of the four blades are all rotatably arranged between the outer frame and the middle transmission shaft, the bottom end of the blade positioned above the outer frame extends to the outer side of the next blade adjacent to the outer frame, and one end of the connecting piece is fixedly connected with the middle transmission shaft. The new energy wave energy is absorbed and utilized, and the wave energy is converted into kinetic energy and then further converted into required energy. The invention has simple structure, easy control of size and low manufacturing difficulty, can be put into various water areas for use, is less influenced by flow direction, and realizes high-efficiency and durable energy absorption of inrush current energy.

Description

Efficient wave energy absorption device
Technical Field
The invention relates to the field of application of utilizing wave energy, in particular to a high-efficiency wave energy absorption device.
Background
The first patent on wave energy in the world was filed in 1799 by france, and the petroleum crisis starting in the twentieth century prompted the development of renewable energy sources, which aroused the interest in new energy sources, wherein the wave energy has been intensively studied in various countries for its utilization. And because of the environment of the sea area and the power generation form in europe, research and test of wave energy in various countries are diversified.
The wave energy utilization technology research in China starts in the last 70 th century, starts relatively late, and in 1975, a wave power generation buoy with designed power is successfully developed, and a sea test is carried out in Islands in Zhejiang province. China has 2 ten thousand kilometers of coastline and rich wave energy resources, wherein the wave energy resources owned by Zhejiang, Guangdong, Fujian, Shandong and Taiwan are the most abundant. In recent years, the research and development of wave energy technology in China is extremely rapid, and in 2010, the first ocean energy special support plan, namely ocean renewable energy special fund, is set in China, so that the development of wave energy utilization is promoted.
At present, wave absorbing devices at home and abroad mainly comprise an oscillating water column type (OWC), an oscillating floater type (Buoy), a Pendulum type (Pendulum), a Duck type (Duck), a Raft type (Raft), a contraction ramp type (Tapchan), a Clam type (Clam) and the like. The existing wave energy absorption device has the key problems of low energy conversion efficiency, high construction cost, unstable energy output and the like, but still has a good development prospect.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the sea wave energy absorption device, the impeller structure is arranged to rotate under the action of the inrush current and can only rotate towards one direction, so that the energy in the horizontal direction of the sea waves is captured and converted into the kinetic energy of the transmission shaft.
The invention provides a wave energy absorbing structure, which comprises an intermediate transmission shaft, an impeller structure and a connecting piece for connecting with external equipment,
the middle transmission shaft is vertically arranged,
the impeller structure comprises an outer frame and a plurality of blades, the inner side of the outer frame is fixedly connected with the side wall of the middle transmission shaft, the blades are all positioned between the outer frame and the middle transmission shaft and are sequentially arranged from top to bottom, the top ends of the blades are all rotatably arranged between the outer frame and the middle transmission shaft, the bottom end of the blade positioned above the blade extends to the outer side of the next blade adjacent to the blade,
one end of the connecting piece is fixedly connected with the middle transmission shaft.
Furthermore, the connecting piece is a sleeve, and one end of the sleeve is sleeved and fixed on the middle transmission shaft.
Further, there are three impeller structures, and the three impeller structures are fixed on the side wall of the middle transmission shaft at intervals of 120 degrees. The three impeller structures are arranged, the number is proper, the three impeller structures are uniformly arranged, the characteristic that the sea waves are 360 degrees and irregularly oriented can be fully utilized, and the sea waves at all angles can be fully absorbed in the process of absorbing energy rotation.
Further, the flabellum is squarely, and the both sides on flabellum top are all fixed and are provided with the pivot, and the flabellum both sides are equallyd divide and are rotated through pivot and frame and intermediate drive axle and be connected.
Furthermore, the shape and the size of each fan blade in the impeller structure are consistent, each fan blade is arranged at equal intervals, and the length of the fan blade located above between every two adjacent fan blades, which extends to the fan blade below, accounts for 1/10-1/5 of the total width of the fan blades. The arrangement makes the blades in the impeller mechanism more compact and the capture efficiency of the inrush current energy higher.
Compared with the prior art, the invention can realize the following beneficial effects: set up the impeller structure for impeller mechanism is rotatory under the effect of gushing the current, and then drives the intermediate drive axle that links to each other with the impeller structure and rotates, thereby realizes converting the wave energy into mechanical energy, is connected like the generator through with connecting piece and external equipment, can convert the wave energy into the electric energy. The invention has simple structure, lower manufacturing difficulty and manufacturing cost, can be put into various water areas for use, is less influenced by the flow direction, and realizes the high-efficiency and durable energy absorption of the inrush current energy.
Drawings
Fig. 1 is a schematic view of an ocean wave energy absorbing apparatus according to an embodiment of the present invention.
Fig. 2 is a state diagram of an embodiment of the present invention for illustrating the operation of an ocean wave energy absorber.
Fig. 3 is a top view of an operational state of an ocean wave energy absorber according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
The wave energy absorbing device provided by the embodiment of the invention comprises an intermediate transmission shaft 2, an impeller structure 1 and a connecting piece 3 for connecting with external equipment. 2 vertical settings of intermediate drive axle, impeller structure 1 includes frame 101 and the unanimous rectangle flabellum 102 of a plurality of shape size, the inboard of frame 101 and the lateral wall fixed connection of intermediate drive axle 2, it is a plurality of flabellum 102 all is located between frame 101 and the intermediate drive axle 2 and from the top down equidistant arranges the setting in proper order, and is a plurality of the top of flabellum 102 all rotates the setting between frame 101 and intermediate drive axle 2, and the bottom that is located the flabellum 102 of top extends to rather than the outside of adjacent next flabellum 102, the one end of connecting piece 3 with 2 fixed connection of intermediate drive axle. The connecting piece in this embodiment is a sleeve, and one end of the sleeve is fixedly sleeved on the intermediate transmission shaft 2.
Specifically, two sides of the top end of each fan blade 102 are fixedly provided with a rotating shaft, four pairs of mounting holes are oppositely formed in the outer frame 101 and the middle transmission shaft 2 at equal intervals, and the rotating shafts on two sides of each fan blade 102 are respectively and rotatably arranged in the pair of mounting holes.
The impeller structure in this embodiment has three, and three impeller structures evenly set up on the lateral wall of middle transmission shaft 2, and the angle that forms between two adjacent impeller structures is 120 degrees.
The fan blades in each impeller structure are designed to be four, and the impeller number can be changed into different impeller numbers according to different wave energy characteristics so as to fully absorb the wave energy. The impeller structure is like a shutter structure, and has four small blades, and because the bottom end of the upper blade in the adjacent blades extends to the outer side of the lower blade, namely the inner side of the bottom end of the upper blade can be overlapped on the outer side of the lower blade, the blades can be opened by waves from one direction only. When waves are driven from the direction of opening the fan blades, the fan blades are opened under the action of force, and the impact force and resistance of the inrush current to the impeller are reduced; when waves are driven from the opposite direction, the fan blades are closed under the action of force, the pushing action of the surge current on the impeller is increased, and therefore the impeller can only rotate in one direction no matter what the advancing direction of the waves is. Taking fig. 3 as an example, when a wave is rushed from the left, the blades of the upper left impeller are closed to drive the transmission shaft to rotate clockwise; when waves are beaten from the right, the fan blades of the middle impeller are closed to drive the transmission shaft to rotate clockwise, so that the wave energy is converted into kinetic energy.
For the middle transmission shaft, except the connection with the fan blades, the middle transmission shaft is directly fixed with the outer frame, so that the energy of the sea wave energy is fully absorbed, and the energy conversion rate is improved. When the wave promotes the flabellum, the transmission shaft is directly dragged to the flabellum inboard, and the flabellum outside then drives the frame motion, because of fixed with the transmission shaft, nevertheless because of the difference of wheel base, the effort of frame is bigger, and then drives the transmission shaft again and rotate, the absorption of dual power promotion kinetic energy.
Sleeve pipe one end and middle transmission shaft interference fit cup joint and fix on middle transmission shaft to avoid both to produce relative motion, and accept the epaxial kinetic energy of transmission, connect external device at the other end, just can utilize the kinetic energy that the wave energy conversion comes, like present more general wave energy electricity generation, the sleeve pipe links to each other with the generator pivot, just can produce the electric energy.
When the wave energy absorption device of this embodiment uses, the axial direction of middle transmission shaft is perpendicular with the sea level for the impeller structure realizes catching the each direction energy of wave current, improves the generating efficiency greatly.
In this embodiment, the closing surface is the same direction when all flabellums of impeller structure are stood perpendicularly, guarantees that the flabellum is opened and closed and is anticlockwise or clockwise simultaneously under the promotion of inrush current.
In this embodiment, the frame and the transmission shaft are structurally connected, and the manufacture can be completed by one mold without adopting an embedded structure, thereby avoiding structural friction and reducing energy absorption efficiency.
In this embodiment, the flabellum is inlayed through mounting hole and frame for the flabellum can the angle open and shut.
In the embodiment, the overlapping part between the adjacent fan blades accounts for 1/5-1/10 of the total width of the fan blades, so that the fan blades are more compact, and the capture efficiency of the inrush current energy is higher.
In this embodiment, when used for power generation, the casing is connected to a generator, the impeller structure is suspended in the sea to absorb the wave energy, and the generator structure floats on the sea.
When the wave energy absorbing device is in a standing non-working state, all the blades are in a closed and hanging state. Because a plurality of impeller structures 360 degrees set up around middle transmission shaft, the flabellum in some impeller structures will open under the effect of inrush current when the sea surge moves, and the flabellum in some impeller structures is closed. Therefore, under the push of the wave current, when a part of the impeller structure rotates along the current direction, the water flow impacts the fully closed blades to push the impeller to rotate; when the other part of impeller structure rotates against the inrush current direction, the fan blades are opened to form a water passing opening under the inrush current pushing, the inrush current resistance is reduced, the intermediate transmission shaft rotates under the combined action, and therefore the sea wave energy can be efficiently absorbed, and the external sleeve connected with the intermediate transmission shaft drives the generator to generate electricity.

Claims (5)

1. An ocean wave energy absorbing device, characterized in that: comprises a middle transmission shaft (2), an impeller structure (1) and a connecting piece (3) for connecting with external equipment,
the middle transmission shaft (2) is vertically arranged,
the impeller structure (1) comprises an outer frame (101) and a plurality of fan blades (102), the inner side of the outer frame (101) is fixedly connected with the side wall of the middle transmission shaft (2), the fan blades (102) are all positioned between the outer frame (101) and the middle transmission shaft (2) and are sequentially arranged from top to bottom, the top ends of the fan blades (102) are all rotatably arranged between the outer frame (101) and the middle transmission shaft (2), and the bottom ends of the fan blades (102) positioned above extend to the outer side of the next fan blade (102) adjacent to the bottom end of the fan blade (102),
one end of the connecting piece (3) is fixedly connected with the middle transmission shaft (2).
2. An ocean wave energy absorbing device according to claim 1 wherein: the connecting piece (3) is a sleeve, and one end of the sleeve is sleeved and fixed on the middle transmission shaft (2).
3. An ocean wave energy absorbing device according to claim 1 wherein: the number of the impeller structures (1) is three, and the three impeller structures are fixed on the side wall of the middle transmission shaft (2) at intervals of 120 degrees.
4. An ocean wave energy absorbing device according to claim 1 wherein: fan blade (102) are square, and the both sides on fan blade (102) top all are fixed and are provided with the pivot, and fan blade (102) both sides are equallyd divide and are rotated through pivot and frame (101) and intermediate drive axle (2) and be connected.
5. An ocean wave energy absorbing device according to claim 1 wherein: the shape and the size of each fan blade (102) in the impeller structure (2) are consistent, each fan blade (102) is arranged at equal intervals, and the length of the fan blade (101) positioned above between every two adjacent fan blades (102) extending to the fan blade (102) below accounts for 1/10-1/5 of the total width of the fan blades (102).
CN202010126119.9A 2020-02-27 2020-02-27 Efficient wave energy absorption device Pending CN111188714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010126119.9A CN111188714A (en) 2020-02-27 2020-02-27 Efficient wave energy absorption device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010126119.9A CN111188714A (en) 2020-02-27 2020-02-27 Efficient wave energy absorption device

Publications (1)

Publication Number Publication Date
CN111188714A true CN111188714A (en) 2020-05-22

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CN202010126119.9A Pending CN111188714A (en) 2020-02-27 2020-02-27 Efficient wave energy absorption device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114856892A (en) * 2022-03-16 2022-08-05 武汉理工大学 Multi-dimensional wave energy power generation device for supplying power to beacon light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114856892A (en) * 2022-03-16 2022-08-05 武汉理工大学 Multi-dimensional wave energy power generation device for supplying power to beacon light

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