CN102332807B - Flexible magnetic fluid wave energy generation device - Google Patents
Flexible magnetic fluid wave energy generation device Download PDFInfo
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- CN102332807B CN102332807B CN 201110263733 CN201110263733A CN102332807B CN 102332807 B CN102332807 B CN 102332807B CN 201110263733 CN201110263733 CN 201110263733 CN 201110263733 A CN201110263733 A CN 201110263733A CN 102332807 B CN102332807 B CN 102332807B
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- permanent magnet
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- wave energy
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Abstract
The invention discloses a flexible magnetic fluid wave energy generation device, relates to the technical field of ocean energy, and aims to improve viability and the wave energy utilization coefficient and reduce cost. The device comprises a permanent magnet and a medium container, wherein a cavity of the medium container is filled with conductive liquid magnetic fluid; the device also comprisesa sheet-shaped flexible magnet fixing component capable of floating on water; the flexible magnet fixing component is formed by jointing multiple magnetic yokes in a spreading manner; the magnetic yokes are articulated with one another and gaps are reserved; multiple permanents are used and fixed in corresponding magnetic yokes respectively; the medium container is a sheet-shaped flexible swim bladder capable of floating on water, and is overlapped with the flexible magnet fixing component in an overlapping manner; the cavity of the medium container is entirely sealed and is waterproof; an electrode is fixed at each of the two ends of the medium container; and the two electrodes are both electrically connected with the liquid magnetic fluid in the medium container. The device provided by the invention can be spread on the sea surface without using a stabilizing platform.
Description
Technical field
The present invention relates to the oceanic energy technology, particularly relate to a kind of technology of flexible magnetism fluid wave wave energy generating set.
Background technology
The theoretical value of whole world wave energy is about 10
9The kW magnitude.The distribution of wave energy is very extensive, if effectively development and use, this not only is conducive to solve the energy scarcity that faces in the social development, and climate change and environmental protection problem also will greatly strengthen the development ability of marine resources.More abundanter wave energy resources are being contained compared with the inshore base region in zone, deep-sea away from land, and this also is the mission requirements of the blue ocean of exploitation.But carry out wave power generation in open sea regions and need overcome many technological difficulties and rugged environment problem.
Along with The development in society and economy, be accompanied by increasingly serious energy pressure and the needs of environmental protection, the oceanic energy technology is just just risen and have an effect recent years.According to wave energy energy conversion principle difference, can utilize technology to be divided into present wave energy in the world: oscillating water column technology, pendulum-type technology, raft formula technology, contraction radio frequency channel technology, point absorb (oscillating floater) technology, canard technology, sea snake technology, wave current rotor technology, killer whale technology, ripple commutation technique, wave cyclone technique etc.The common feature of these Wave energy conversion systems is made up of three grades of energy transfer mechanisms, one-level energy transfer mechanism wherein converts wave energy to the mechanical energy of certain carrier, the secondary energy transfer mechanism becomes the resulting power conversion of one-level power conversion the mechanical energy of rotation, difference according to the energy transfer mode, the power conversion mode of secondary energy transfer mechanism is divided into hydraulic turbine, air turbine, fluid pressure type etc. again, and three grades of energy transfer mechanisms convert the mechanical energy of rotating machinery to electric energy.
All there is the transfer process of an intermediate mechanical energy in traditional Wave energy conversion system; its generating efficiency is lower; and safeguard that in marine environment complex mechanical construction is also comparatively difficult; mechanical structure is also destroyed in the sea situation of complexity easily; such as the Britain scientific and technical personnel according to iron and steel " sea snake " Blast Furnace Top Gas Recovery Turbine Unit (TRT) of bionics design under complicated sea situation; its rigid mechanical structure is impaired through regular meeting; and traditional Wave energy conversion system all must have metastable ocean platform; could drive generator for electricity generation smoothly, but metastable ocean platform construction cost is very high.
At present, also there are some to adopt magnetic fluid to add the wave energy generating set of linear electric generator, the wave energy of these devices absorbs one-level mechanism and still is based upon on traditional float-type architecture basics, all be to utilize float to absorb wave energy, flow in pipeline by promoting magnetic fluid with the rigidly connected piston of float again, cut the magnetic line of force that is fixed on the permanent magnet on the pipeline, thereby the wave energy that float is absorbed is converted into electric energy, though the magnetic fluid mode that adopted these devices has reduced middle conversion link, but the connector of float and piston still is solid structure, the effective usage factor of wave energy is still lower, and under the sea situation of complexity, the solid structure of device partly is easy to impaired, and the survival ability of device itself still is a problem, and the finite volume of float itself, be not easy expansion.
In sum, existing Wave energy converting device has same limitation, fail fundamentally to make a breakthrough and solve, all has following defective: 1) because ocean running environment is abominable, a lot of devices not only can not generate electricity under design point, even under atrocious weather and stormy waves, can not carry out effective autoprotection, destroyed easily; 2) mechanical switch complex structure, system reliability is poor; 3) the effective usage factor of wave energy is low; 4) a lot of electricity generating principles are based upon on the basis of STOP, and cost is very high.
Summary of the invention
At the defective that exists in the above-mentioned prior art, it is strong that technical problem to be solved by this invention provides a kind of survival ability, reliability and wave power utilization coefficient height, and the low flexible magnetism fluid wave wave energy generating set of cost.
In order to solve the problems of the technologies described above, a kind of flexible magnetism fluid wave wave energy generating set provided by the present invention, comprise permanent magnet and media Containers, be filled with the liquid magnetofluid of conduction in the cavity volume of described media Containers, it is characterized in that: comprise that also one can float at the plate-shaped flexible magnet fixed part of the water surface, described flexible magnet fixed part is engaged in the tiling mode by a plurality of yokes and forms, be hinged between each yoke, and leave the space, described permanent magnet has a plurality of, is separately fixed in each yoke;
Described media Containers is can float at the flexible floatoblast of the plate-shaped of the water surface, and is superimposed with overlapped way and flexible magnet fixed part, its cavity volume integral sealing and waterproof;
Each fixedly has an electrode two ends of described media Containers, described two electrodes all with media Containers in liquid magnetofluid be electrically connected.
Further, each permanent magnet cloth is set as the Halbach face array a little less than, the magnetic field, another side strong towards magnetic field, media Containers one side.
Further, the superimposed body both sides of described flexible magnet fixed part and media Containers respectively are connected with the buoyancy aid that can float at the water surface.
Further, described permanent magnet is box-shaped or hexagon, and each permanent magnet all can rotate ± 90 degree relative to adjacent permanent magnet with the fluctuating of flexible magnet fixed part is crooked.
Further, described liquid magnetofluid is liquid metal mercury or electrolyte solution.
Further, described permanent magnet is the rare earth permanent magnet neodymium iron boron.
Flexible magnetism fluid wave wave energy generating set provided by the invention, adopted and to have floated at the media Containers of the flexible floatoblast of the plate-shaped of the water surface as liquid magnetofluid, and adopted and to have floated at the plate-shaped flexible magnet fixed part of the water surface carrier as permanent magnet, there is not solid structure, can be tiled on the sea, need be by means of stabilized platform, be difficult for because of wave stroke impaired, it is strong to have survival ability, cost is low, high reliability features, and has bigger wave energy conversion surface compared to existing technology, have the high characteristics of wave power utilization coefficient, the vibration frequency in same marine site is identical at one time simultaneously, and this also provides advantage for the electric energy reprocessing, magnetohydrodynamic generation also can reduce energy loss, improves the wave energy conversion efficiency; In addition, a plurality of permanent magnet cloth are set as Halbach face array can obtain single face magnetic field, can improve power output, be conducive to simplify electric machine structure, improve device performance, improve power density, it is a kind of feasible mode of exploitation offshore ocean wave energy, its self-shielding effect can reduce leakage field, prevents the electromagnetic pollution to the marine eco-environment.
Description of drawings
Fig. 1 is that the master of the flexible magnetism fluid wave wave energy generating set of the embodiment of the invention looks cut away view;
Fig. 2 is the three-dimensional view of the flexible magnetism fluid wave wave energy generating set of the embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As Fig. 1-shown in Figure 2, a kind of flexible magnetism fluid wave wave energy generating set that the embodiment of the invention provides, comprise permanent magnet 1 and media Containers 2, be filled with the liquid magnetofluid 3 of conduction in the cavity volume of described media Containers 2, it is characterized in that: comprise that also one can float at the plate-shaped flexible magnet fixed part 4 of the water surface, described flexible magnet fixed part 4 is engaged in the tiling mode by a plurality of yokes and forms, be hinged between each yoke, and leave the space, described permanent magnet 1 has a plurality of, is separately fixed in each yoke;
Described media Containers 2 is can float at the flexible floatoblast of the plate-shaped of the water surface, and is superimposed with overlapped way and flexible magnet fixed part 4, its cavity volume integral sealing and waterproof;
That each permanent magnet 1 cloth is set as is strong towards media Containers 2 one side magnetic fields, the Halbach face array a little less than the opposite side magnetic field;
Each fixedly has an electrode 6 two ends of described media Containers 2, described two electrodes 6 all with media Containers 2 in liquid magnetofluid 3 be electrically connected, each electrode 6 all is connected to lead 7, and the periphery of each electrode 6 all is coated with insulating barrier.
In the embodiment of the invention, described flexible magnet fixed part 4 respectively is connected with the buoyancy aid 5 that can float at the water surface with the superimposed body both sides of media Containers 2.
In the embodiment of the invention, described permanent magnet 1 is box-shaped, and each permanent magnet 1 all can rotate with the crooked adjacent permanent magnet 1 relatively of the fluctuating of flexible magnet fixed part 4 ± 90 spend, during practical application, also can adopt the permanent magnet of hexagon, to increase the flexible flexibility ratio of whole device.
In the embodiment of the invention, described liquid magnetofluid 3 is liquid metal mercury, and described buoyancy aid 5 is inflating rubber capsules, during practical application, liquid magnetofluid also can adopt the high liquid electrolyte of other conductance, and buoyancy aid also can adopt other can float at the object of the water surface.
In the embodiment of the invention, described permanent magnet is rare earth permanent magnet neodymium iron boron (Nd2Fe14B), and neodymium iron boron is the strongest permanent magnetic material of present magnetic, and its maximum magnetic energy product can reach 400kJ/m
3, remanent magnetism can reach 1.47 T, and coercive force is the highest to surpass 1000 kA/m, and the mechanical property of Nd-Fe-B permanent magnet is good, is easy to carry out cutting processing.
In the embodiment of the invention, described Halbach face array is prior art, permanent magnet 1 cloth is set as the mode following (referring to Fig. 1) of Halbach face array: be example to lay permanent magnet from left to right, in the adjacent permanent magnet in per two left and right sides, the left relatively permanent magnet of right permanent magnet rotates counterclockwise 90 degree, the Halbach face array that permanent magnet is formed since the magnetic field of the magnetic field that the cutting orientation magnetizing permanent magnet produces and the generation of radial magnetizing permanent magnetism body in a side mutual superposition of Halbach face array, opposite side at Halbach face array is cancelled out each other, make that a side magnetic field of Halbach face array is strong, a little less than the opposite side magnetic field.
The execution mode of the embodiment of the invention is as follows:
With the folding back of the flexible magnetism fluid wave wave energy generating set of the embodiment of the invention by workboat be transported to dispose the purpose marine site after tiling across the sea, and link to each other with workboat by the rope both sides that flexible magnet fixed part and the superimposed body of media Containers is consistent with the wave progresses direction, assisting under the driving that reaches wave energy of buoyancy aid, the superimposed body of flexible magnet fixed part and media Containers rises and fall on the waves, make liquid magnetofluid under the effect of media Containers internal pressure ripple, the magnetic field space of the Halbach face array of forming at permanent magnet is made cutting magnetic line movement, thereby low-density and unsettled wave energy are converted to electric energy, the electric energy that produces stores by the boat-carrying charge in batteries that electrode and lead are input to workboat, both can be for ocean development nearby provide energy support, make a return voyage again after also can being transported to nearest land to the electric energy that stores.
The embodiment of the invention is under the situation of considering load factor, and its peak power output is:
Wherein, σ is the working fluid conductivity, and u is magnetic fluid speed, and B is useful flux density, and V is the active electrode volume.
Claims (3)
1. flexible magnetism fluid wave wave energy generating set, comprise permanent magnet and media Containers, be filled with the liquid magnetofluid of conduction in the cavity volume of described media Containers, it is characterized in that: comprise that also one can float at the plate-shaped flexible magnet fixed part of the water surface, described flexible magnet fixed part is engaged in the tiling mode by a plurality of yokes and forms, and is hinged between each yoke, and leaves the space, described permanent magnet has a plurality of, is separately fixed in each yoke;
Described media Containers is can float at the flexible floatoblast of the plate-shaped of the water surface, and is superimposed with overlapped way and flexible magnet fixed part, its cavity volume integral sealing and waterproof;
Each fixedly has an electrode two ends of described media Containers, described two electrodes all with media Containers in liquid magnetofluid be electrically connected;
That each permanent magnet cloth is set as is strong towards magnetic field, media Containers one side, the Halbach face array a little less than the magnetic field, another side;
The superimposed body both sides of described flexible magnet fixed part and media Containers respectively are connected with the buoyancy aid that can float at the water surface;
Described permanent magnet is box-shaped or hexagon, and each permanent magnet all can rotate ± 90 degree relative to adjacent permanent magnet with the fluctuating of flexible magnet fixed part is crooked.
2. device according to claim 1, it is characterized in that: described liquid magnetofluid is liquid metal mercury or electrolyte solution.
3. device according to claim 1, it is characterized in that: described permanent magnet is the rare earth permanent magnet neodymium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110263733 CN102332807B (en) | 2011-09-07 | 2011-09-07 | Flexible magnetic fluid wave energy generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110263733 CN102332807B (en) | 2011-09-07 | 2011-09-07 | Flexible magnetic fluid wave energy generation device |
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| Publication Number | Publication Date |
|---|---|
| CN102332807A CN102332807A (en) | 2012-01-25 |
| CN102332807B true CN102332807B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110263733 Expired - Fee Related CN102332807B (en) | 2011-09-07 | 2011-09-07 | Flexible magnetic fluid wave energy generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105763022B (en) * | 2016-03-30 | 2018-08-17 | 山东大学 | Ray formula metal magnetic fluid generating device and electricity-generating method |
| CN105799903A (en) * | 2016-04-25 | 2016-07-27 | 浙江大学海洋学院 | Wave-energy-boosted unmanned ship |
| CN113059798B (en) * | 2021-04-01 | 2022-03-08 | 华中科技大学 | 3D printing shark skin imitation magnetofluid droplet generator and design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7166927B2 (en) * | 2004-01-05 | 2007-01-23 | Scientific Applications & Research Associates, Inc. | Modular liquid-metal magnetohydrodynamic (LMMHD) power generation cell |
| CN1885692A (en) * | 2006-06-16 | 2006-12-27 | 东南大学 | Built-in type permanent-magnet linear motor |
| CN101309041B (en) * | 2008-07-11 | 2010-12-22 | 中国科学院电工研究所 | Swinging type wave energy fluid metal magnetohydrodynamic electricity generation float tube |
| CN202285364U (en) * | 2011-09-07 | 2012-06-27 | 上海海洋大学 | Horizontally paved magnetic fluid wave energy power generating device |
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