CN111577518B - Floating type wave power generation device - Google Patents
Floating type wave power generation device Download PDFInfo
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- CN111577518B CN111577518B CN202010459122.2A CN202010459122A CN111577518B CN 111577518 B CN111577518 B CN 111577518B CN 202010459122 A CN202010459122 A CN 202010459122A CN 111577518 B CN111577518 B CN 111577518B
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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
- 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
- F03B13/1845—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 slides relative to the rem
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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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- 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 floating type wave power generation device, which comprises a buoy, a shell, a central shaft, a magnetic pole, a coil and a solid iron ball, wherein the buoy is arranged on the shell; the solid iron ball is fixedly arranged below the buoy through a central shaft; the shell is arranged on the periphery of the central shaft in a sliding manner and comprises an inner shell and an outer shell, the inner shell and the outer shell are connected in a sealing manner from top to bottom to form an internal sealed space, and the magnetic pole and the coil are positioned in the internal sealed space; the magnetic poles are in multiple groups, are fixedly arranged on the inner wall of the shell and are uniformly distributed along the axial direction of the central shaft; each group of magnetic poles comprises two arc magnets with different polarities and are oppositely arranged along the circumferential direction of the inner shell; the coil is wound on the outer wall of the inner shell; the central shaft includes a plurality of alternating magnetically permeable material portions and magnetically non-permeable material portions. According to the power generation device, the buoy fluctuates up and down along with waves, so that the magnetic poles arranged in the shell pass through the magnetic flux in the closed loop formed by the coils to change, and the efficient utilization of wave energy is realized to generate power.
Description
Technical Field
The invention relates to a power generation device, in particular to a floating type wave power generation device.
Background
With the gradual reduction of world mineral energy, people must search new energy, and ocean energy is undoubtedly one of the first-choice new energy; with the increasing damage of fossil energy to the environment, people are also looking for new alternative energy, renewable and clean ocean energy, which is one of the most ideal alternative energy. Wave energy is the cleanest renewable resource, and has large reserves and wide distribution, so that countries in the world still invest great force for years for continuous exploration and research in spite of instability and difficult utilization.
There are basically three types of wave power plants that have been developed and developed more thoroughly: the three types of the oscillating water column type, the mechanical type and the water flow type have advantages and disadvantages respectively, but have a common problem that the wave energy is converted into electric energy through multiple intermediate links, the efficiency is low, and the power output fluctuation is large.
Aiming at the problems, in order to improve the pressure of increased load of the device caused by extreme weather and wave changing magic measurement and improve the efficiency of the power generation device, the article is numbered as 1673 and 8241(2019)08-041-03, and is named as 'swinging type wave energy power generation device model research', a swinging mechanical wave energy conversion power generation device is designed, a floater swings under the driving of waves to drive a gear, the gear drives a rotating shaft of a generator to generate power through a transmission device, and the wave energy is converted into electric energy. Although experiments prove that the device has high overall conversion efficiency and certain application potential, the mechanical transmission structure has large tests on the gear and the transmission shaft, the intermediate ring is slightly fussy, and the overall structure of the device is difficult to maintain balance under the condition of complex sea conditions.
Therefore, it is a problem worth studying to provide a wave power generation device with low loss, high efficiency, simple structure, few intermediate links, strong use flexibility, high feasibility and practicability, long service life and environmental protection.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the wave power generation device which is simple in structure, long in service life and environment-friendly.
In order to achieve the aim, the invention discloses a floating type wave power generation device which comprises a buoy, a shell, a central shaft, a magnetic pole, a coil and a solid iron ball, wherein the buoy is arranged on the shell; the solid iron ball is fixedly arranged below the buoy through a central shaft; the shell is arranged on the periphery side of the central shaft in a sliding manner and comprises an inner shell and an outer shell, and the inner shell and the outer shell are connected in a sealing manner from top to bottom to form an inner sealing space; the magnetic pole and the coil are both positioned in a sealed space between the inner shell and the outer shell; the magnetic poles are in multiple groups, are fixedly arranged on the inner wall of the shell and are uniformly distributed along the axial direction of the central shaft; each group of magnetic poles comprises two arc magnets with different polarities, the two arc magnets are oppositely arranged along the circumferential direction of the inner shell, the coil is wound on the outer wall of the inner shell, and an air gap is formed between the coil and the magnetic poles; the central shaft comprises a plurality of magnetic conduction material parts and non-magnetic conduction material parts, the magnetic conduction material parts and the non-magnetic conduction material parts are alternately arranged, and the axial lengths of the magnetic conduction material parts along the central shaft are different.
The floating cylinder floats on the water surface, the central shaft is driven to freely move up and down relative to the shell along with the fluctuation of waves, meanwhile, the magnetic pole arranged in the shell penetrates through the closed loop formed by the coil, and the magnetic flux in the closed loop changes along with the up-and-down reciprocating motion in the center, so that induced potential is generated, and wave power generation is carried out. Meanwhile, the inner shell and the outer shell adopt a sealing design, so that water is prevented from entering the shells.
Wherein, the length of each magnetic conductive material part of the central shaft is gradually increased from top to bottom.
Through the length change of the magnetic conductive material, the central shaft reciprocates up and down to enable the length of the magnetic conductive material between the magnetic poles to be changed continuously, so that the magnetic flux in a closed loop formed by the coil can be changed rapidly.
Furthermore, the non-magnetic material parts of the central shaft are consistent in length along the axial direction of the central shaft and are smaller than the interval between two adjacent groups of magnetic poles in the axial direction of the central shaft.
The length of the non-magnetic conducting material is slightly smaller than the axial interval of the two adjacent groups of magnetic poles in the central shaft, so that the magnetic field change can be further quickly reflected.
Meanwhile, the coil is spirally wound on the outer wall of the inner shell in an inclined mode, the whole surface of the outer wall of the inner shell is covered, and two ends of the coil extend out of the shell. Through the oblique winding of the coil, the change rate of the magnetic flux in the closed loop can be increased to a certain extent, and therefore the power generation efficiency is improved.
The contact parts of the two ends of the coil and the shell adopt a sealing design to prevent water from entering the shell; meanwhile, two ends of the coil extending out of the shell can be directly supplied with power or store energy.
In some embodiments, the central axis is a solid cylinder; the inner shell and the outer shell are both cylindrical; the magnetic poles are arc-shaped.
The central angle corresponding to the radian of the magnetic pole is 30-120 degrees. The curvature of the poles should be determined by the number of poles, the pole pitch between two poles of each set should be greater than 60 °, and the central angle of each pole may be between 30 ° and 120 °. The radian is obtained according to simulation analysis, and the actual installation needs to be properly adjusted.
Through setting the radian of the magnetic pole, the air gap in the shell can be ensured on the premise of ensuring the size of the magnetic field, the magnetic force line is prevented from directly forming a loop in the shell, and meanwhile, the cost is effectively saved.
Wherein, the bottom of the float adopts an arc surface. Through the arrangement of the arc surface, the pressure applied to the bottom of the float bowl is reduced, so that the amplitude of the up-and-down reciprocating motion of the central shaft is increased, and the utilization rate of wave energy and the efficiency of the device are further improved.
Furthermore, the buoy is made of tough high-molecular polyethylene and other materials, has good weather resistance and impact resistance, and can prevent ultraviolet rays, freezing and seawater chemical agent oil stain and other erosion.
The inner shell and the outer shell are made of polytetrafluoroethylene materials, and the polytetrafluoroethylene materials have excellent chemical stability, corrosion resistance, sealing property, high lubrication and non-sticking property, electric insulation property, good ageing resistance and excellent temperature resistance.
The solid cylindrical magnetic conductive material part of the central shaft adopts pure iron with high magnetic conductivity, and the outer surface of the solid cylindrical magnetic conductive material part is galvanized, so that the corrosion of air and seawater can be effectively prevented; the non-magnetic conductive material part is made of polytetrafluoroethylene materials the same as those of the inner shell and the outer shell; the non-equal height magnetic conductive materials are connected with the equal height non-magnetic conductive materials at intervals.
Preferably, the solid iron ball is attached to the surface of the solid iron ball by adopting a ZS-711 inorganic anticorrosive paint in a coating mode to form a corrosion-resistant layer; the adopted ZS-711 inorganic anticorrosive paint has the advantages of high adhesion, strong weather resistance, wear resistance, heat resistance, strong anticorrosive performance and the like.
Furthermore, both ends of the outer wall of the shell are horizontally and symmetrically provided with cross arms. The power generation device can be flexibly assembled with other devices through the cross arm. And the center of the cross arm can be provided with a wire slot for the two ends of the coil to pass through, and the two ends of the coil can directly supply power or store energy to the outside through the cross arm.
Compared with the prior art, the invention has the following advantages:
1. according to the power generation device, the buoy fluctuates up and down along with waves, so that the magnetic poles arranged in the shell pass through the magnetic flux in the closed loop formed by the coils to change, and the efficient utilization of wave energy is realized to generate power.
2. The invention has simple structure, few intermediate links, no gear and other transmission structures which are easy to wear, low loss, long service life, environmental protection, strong use flexibility, high energy utilization rate, high power generation efficiency, strong storm resistance and sinking resistance, high feasibility and practicability, can be widely used along, near and off shore, and can be flexibly assembled with other devices through the arrangement of the cross arm.
3. According to the invention, the arrangement of the arc surface at the bottom of the floating cylinder reduces the contact area between the bottom of the floating cylinder and the water surface, and increases the pressure applied on the floating cylinder, so that the amplitude of the up-and-down reciprocating motion of the central shaft is increased, and the utilization rate of wave energy and the efficiency of the device are improved; meanwhile, the buoy part is made of tough high-molecular polyethylene and other materials, has good weather resistance and impact resistance, and can prevent ultraviolet rays, freezing and corrosion of seawater chemical agent oil stains and the like.
4. The central shaft part is fixed below the buoy and comprises a magnetic conductive material part and a non-magnetic conductive material part of a solid cylinder, the magnetic conductive material parts with different heights are connected with the non-magnetic conductive material parts with the same height at intervals, and the heights of the magnetic conductive material parts of the central shaft are gradually increased from top to bottom; the central shaft reciprocates up and down to enable the height of the magnetic conduction material part between each group of magnetic poles to be changed continuously, so that the magnetic flux in a closed loop formed by the coil is changed; the magnetic conducting material part of the central shaft is made of pure iron with high magnetic conductivity, the outer surface of the central shaft is galvanized to effectively prevent air and seawater corrosion, and the non-magnetic conducting material part is made of polytetrafluoroethylene materials the same as those of the inner shell and the outer shell.
5. The invention utilizes the inner shell and the outer shell of the hollow cylinder, the inner shell and the outer shell are connected at the top and the bottom to form an enclosed space, and the structure similar to the structure of the inner container and the outer shell of the thermos bottle forms a shell with a sealing interlayer to fix the coil and the magnetic pole, thereby effectively forming an air gap; the central shaft penetrates through the hollow part of the inner shell, an air gap is also formed between the central shaft and the inner wall of the inner shell, and the central shaft can freely move up and down between the central shaft and the inner wall of the inner shell, so that the magnetic flux change of a closed loop is effectively realized. Meanwhile, the inner shell and the outer shell are made of polytetrafluoroethylene materials, the polytetrafluoroethylene materials have excellent chemical stability and corrosion resistance, sealing performance, high lubrication and non-adhesion performance, electric insulation performance, good ageing resistance and excellent temperature resistance, and the service life of the device is prolonged.
6. The invention forms each group of magnetic poles by arranging the arc magnets with different polarities on the inner wall of the outer shell oppositely and uniformly along the axial direction of the central shaft, the coil is wound on the outer wall of the inner shell according to the oblique rule and covers the whole surface of the inner shell, and an air gap is formed between the magnets and the coil; the coils are wound according to an oblique rule, so that the change rate of magnetic flux in a closed loop can be increased to a certain extent, and the power generation efficiency is improved; magnetic induction lines generated by the magnets penetrate through a closed loop formed by the coils, and magnetic flux in the closed loop changes along with the up-and-down reciprocating motion of the central shaft, so that induced electromotive force is generated, and wave energy is effectively converted into electric energy.
7. The invention utilizes the solid iron ball part fixed at the bottom of the central shaft to assist the central shaft to do up-and-down reciprocating motion and control the up-and-down moving range of the central shaft; meanwhile, the solid iron ball part is attached to the surface of the solid iron ball part in a coating mode by adopting ZS-711 inorganic anticorrosive paint to form a corrosion-resistant layer; the adopted ZS-711 inorganic anticorrosive paint has the advantages of high adhesion, strong weather resistance, wear resistance, heat resistance, strong anticorrosive performance and the like, and the service life of the device is prolonged.
Drawings
FIG. 1 is a schematic structural view of the floating wave power unit of the present invention;
FIG. 2 is a schematic diagram of the power generation concept of the present invention;
FIG. 3 is a schematic diagram of the magnetic flux path change of the floating wave power generation device of the present invention;
fig. 4 is a sectional view of the floating wave power unit a-a of fig. 1.
In the figure, 1.1-float bowl, 1.2-solid iron ball, 2-central shaft, 2.1-magnetic conductive material part, 2.2-non-magnetic conductive material part, 3-coil, 4-magnet, 5-shell, 5.1-outer shell, 5.2-inner shell and 6-cross arm.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the floating wave power generation device comprises a buoy 1.1, a central shaft 2, a shell 5, magnetic poles, a coil 3 and a solid iron ball 1.2, wherein the central shaft 2 is fixed at the bottom of the buoy 1.1, the solid iron ball 1.2 is fixed at the bottom of the central shaft 2, the shell 5 comprises an inner shell 5.2 and an outer shell 5.1 which are both hollow cylinders, the inner shell and the outer shell are connected at the top and the bottom to form an integrally closed space, and the structure is similar to that of an inner container and an outer shell of a thermos bottle; the magnetic pole and the coil 3 are arranged in a closed space formed by the inner shell and the outer shell, the central shaft 2 penetrates through the hollow part of the inner shell 5.2, an air gap is formed between the central shaft and the inner wall of the inner shell 5.2, and the central shaft and the inner wall can freely move up and down under the driving of the buoy.
Wherein: the central shaft 2 is fixed below the buoy and comprises a magnetic conductive material part 2.1 and a non-magnetic conductive material part 2.2 which are solid cylinders, the magnetic conductive material parts with different heights are connected with the non-magnetic conductive material parts with the same height at intervals, and the heights of the magnetic conductive material parts 2.1 are gradually increased from top to bottom (axially) along the central shaft 2.
The magnetic poles are arranged into a plurality of groups, each group of the magnetic poles adopts arc magnets 4 with different polarities and is respectively oppositely arranged on the inner wall of the outer shell 5.1, the coil 3 is wound on the outer wall of the inner shell 5.2 according to an oblique rule and covers the whole surface of the inner shell, and an air gap is formed between the magnets 4 and the coil 3; the coil 3 is wound according to an oblique rule, so that the change rate of magnetic flux in a closed loop can be increased to a certain extent, and the power generation efficiency is improved; the magnetic induction lines generated by the magnets 4 pass through a closed loop formed by the coils 3, and the height of the magnetic conductive material part 2.1 between the two magnets 4 positioned in each group of magnetic poles is constantly changed by utilizing the vertical reciprocating motion of the central shaft 2, so that the magnetic flux in the closed loop formed by the coils 3 is changed, and induced electromotive force is generated.
And the outer wall of the shell is provided with a cross arm 6 for flexibly assembling the power generation device with other devices. Meanwhile, a wire slot is arranged in the cross arm 6, and two ends of the coil 3 penetrate through the shell 5.1 and are connected with an external power supply device or an external energy storage device through the cross arm 6.
The working principle of the floating type wave power generation device with the structure is as follows:
as shown in fig. 2, is a power generation principle diagram; the buoy 1.1 floats on the water surface and automatically rises and falls along with the fluctuation of waves; the shell 5 is fixed with other devices through a cross arm, and a magnetic pole and a coil 3 are arranged in an internal closed space between the inner shell and the outer shell; the central shaft 2 is fixed below the buoy and moves up and down along with the buoy to enable the height of the magnetic conductive material between the magnets 4 to be changed constantly, so that magnetic flux in a closed loop formed by the coils is changed, induced electromotive force is generated, and the conversion of wave energy into electric energy for output is achieved.
As shown in fig. 3, a magnetic flux path diagram; the arc magnets 4 with different polarities are respectively oppositely arranged on the inner wall of the outer shell 5.1, the coil 3 is wound on the outer wall of the inner shell 5.2 according to an oblique rule and covers the whole surface of the inner shell, and an air gap is formed between the magnets and the coil; the central shaft 2 is formed by connecting parts 2.1 of magnetic materials with different heights and parts 2.2 of non-magnetic materials with the same height at intervals, penetrates through the hollow part of the inner shell, and has an air gap with the inner wall of the inner shell; the vertical reciprocating motion of the central shaft enables the height of the magnetic conductive material part between the magnets to be changed continuously, so that the magnetic flux in a closed loop formed by the coils is changed, induced electromotive force is generated, and the conversion of wave energy into electric energy for output is realized.
Wherein: the magnetic induction line starts from the N pole of the magnet on one side, sequentially passes through the air gap, the coil, the air gap and the magnetic conductive material, reaches the other side, sequentially passes through the air gap, the coil and the air gap on the side, reaches the S pole of the magnet on the side, and returns to the S pole of the magnet on the starting side through the N pole, so that a closed curve is formed.
Wherein: the right case in fig. 3 is after the central shaft in the left case has moved upward; the magnetic conducting material between the magnets in the left case, material 2.1.1 being at a lower height than the magnetic conducting material between the magnets in the right case, material 2.1.2, so the magnetic flux in the closed loop in the right case is greater than the magnetic flux in the closed loop in the left case; therefore, along with the up-and-down reciprocating motion of the central shaft, the magnetic flux in the closed loop is continuously changed, induced electromotive force is generated, and the conversion of wave energy into electric energy for output is realized.
As shown in fig. 4, the cross-sectional shell 5 of the floating wave power generation device of the present invention includes an inner shell 5.2 and an outer shell 5.1, both of which are hollow cylinders, and the inner shell and the outer shell are connected at the top and the bottom to form an integrated closed space, similar to the structure of the inner container and the outer shell of a thermos bottle; the magnetic pole and the coil part are positioned in a closed space formed by the inner shell and the outer shell, the arc magnets 4 with different polarities are respectively oppositely arranged on the inner wall of the outer shell 5.1, the coil 3 is wound on the outer wall of the inner shell 5.2 according to an oblique rule and covers the whole surface of the inner shell, and an air gap is formed between the magnets and the coil; the central shaft 2 passes through the hollow part of the inner shell, an air gap exists between the central shaft and the inner wall of the inner shell, and the central shaft can freely move up and down between the central shaft and the inner wall of the inner shell.
Meanwhile, the magnets arranged on the shell 5.1 are arranged according to the adjacent surfaces and different polarities. Meanwhile, the length of the non-magnetic material conducting part of the central shaft 2 should be slightly smaller than the interval between the two adjacent sets of magnetic poles, because if the length is too long, the frequency of the magnetic field change becomes slow, and the induced electromotive force generated is also reduced. The length is also small, so it should be slightly smaller, so that the non-magnetic conductive material part 2.2 can react the magnetic field change faster in the upper and lower magnetic conductive material parts in the middle of the interval.
The radian of the arc-shaped magnet 4 cannot be too large, otherwise, the magnet is wasted, the air gap in the shell is too small, the magnetic force lines directly form a closed loop in the shell, and only few magnetic force lines pass through the magnetic conductive material part; too small, in turn, results in insufficient magnetic field. The arc size should be kept as small as possible to avoid loops in the housing and without wasting magnets. The central angle corresponding to the radian of the arc-shaped magnet 4 is set to be between 30 and 120 degrees.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A float formula wave power generation device which characterized in that: the power generation device comprises a buoy, a shell, a central shaft, a magnetic pole, a coil and a solid iron ball; the solid iron ball is fixedly arranged below the buoy through a central shaft; the shell is arranged on the outer periphery side of the central shaft in a sliding mode and comprises an inner shell and an outer shell, and the inner shell and the outer shell are connected in a sealing mode up and down to form an inner sealing space; the magnetic pole and the coil are both positioned in a sealed space between the inner shell and the outer shell; the magnetic poles are in multiple groups, are fixedly arranged on the inner wall of the shell and are uniformly distributed along the axial direction of the central shaft; each group of magnetic poles comprises two arc magnets with different polarities and are oppositely arranged along the circumferential direction of the inner shell; the coil is wound on the outer wall of the inner shell, and an air gap is formed between the coil and the magnetic pole; the central shaft comprises a plurality of magnetic conduction material parts and non-magnetic conduction material parts, the magnetic conduction material parts and the non-magnetic conduction material parts are alternately arranged, and the axial lengths of the magnetic conduction material parts along the central shaft are different.
2. The power generation apparatus of claim 1, wherein: the length of each magnetic conductive material part of the central shaft is gradually increased from top to bottom.
3. The power generation apparatus of claim 2, wherein: the non-magnetic material parts of the central shaft have the same length along the axial direction of the central shaft and are smaller than the interval between two adjacent groups of magnetic poles in the axial direction of the central shaft.
4. A power plant according to claim 3, characterized in that: the coil is spirally wound on the outer wall of the inner shell in an inclined mode, the whole surface of the outer wall of the inner shell is covered, and two ends of the coil extend out of the shell.
5. The power generation apparatus of claim 4, wherein: the central shaft is a solid cylinder; the inner shell and the outer shell are both cylindrical; the magnetic poles are arc-shaped.
6. The power generation apparatus of claim 5, wherein: the central angle corresponding to the radian of the arc-shaped magnet is 30-120 degrees.
7. The power generation apparatus of claim 6, wherein: the bottom of the float bowl is an arc surface.
8. The power generation apparatus of claim 7, wherein: the buoy is made of polyethylene material; the shell is made of polytetrafluoroethylene materials; the magnetic conducting material part of the central shaft is made of pure iron, and the outer surface of the central shaft is coated with an anticorrosive layer; the non-magnetic material part of the central shaft is made of polytetrafluoroethylene material; the outer surface of the solid iron ball is coated with an anticorrosive coating.
9. The power generation apparatus of claim 7, wherein: and two ends of the outer wall of the shell are horizontally and symmetrically provided with cross arms.
10. The power generation apparatus of claim 9, wherein: and a wire slot for the coil to pass through is arranged in the middle of the cross arm, and two ends of the coil are connected with an external power supply device or an energy storage device through the wire slot.
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| CN202010459122.2A CN111577518B (en) | 2020-05-27 | 2020-05-27 | Floating type wave power generation device |
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| WO2011077118A1 (en) * | 2009-12-24 | 2011-06-30 | Libertine Fpe Ltd | A piston |
| CN101968025A (en) * | 2010-08-31 | 2011-02-09 | 东南大学 | Straight line wave power generator based on magnetic gear |
| WO2014171910A1 (en) * | 2013-04-17 | 2014-10-23 | Sidorenko Yuriy | Linear electric generator |
| CN203702445U (en) * | 2014-01-16 | 2014-07-09 | 严凯 | Wave elastic force power generation device |
| CN103807085A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Wave power generation device based on linear magnetic gear motor |
| CN104578672A (en) * | 2015-01-22 | 2015-04-29 | 东南大学 | Cylinder type speed-changing linear permanent magnet generator used for wave power generation |
| CN106899194A (en) * | 2017-03-31 | 2017-06-27 | 东南大学 | Energy by ocean current integrated generating device based on Flux modulation compound machine |
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