CN201794706U - Piezoelectric wave power generation system - Google Patents
Piezoelectric wave power generation system Download PDFInfo
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- CN201794706U CN201794706U CN2010202784839U CN201020278483U CN201794706U CN 201794706 U CN201794706 U CN 201794706U CN 2010202784839 U CN2010202784839 U CN 2010202784839U CN 201020278483 U CN201020278483 U CN 201020278483U CN 201794706 U CN201794706 U CN 201794706U
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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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Abstract
The utility model discloses a piezoelectric wave power generation system. In the piezoelectric wave power generation system, a wave power generation system is formed when double pontoon boats drive a hydraulic cylinder to pump liquid into a high-pressure tank along with the heave of waves so as to form hydraulic power of the liquid; the function of a hydraulic vibration system is implemented when the static energy of the liquid drives a motor to drive a rotation shaft piston to rotate to ensure that the pressure of the liquid in the hydraulic cylinder is changed; and the function of a piezoelectric conversion system is implemented when quasi-harmonic vibration is generated by the pressure change of the liquid to drive the piston to generate compression stress which generates the quasi-harmonic vibration for a piezoelectric stack so as to ensure that mechanical energy is converted into electric energy by a direct piezoelectric effect of d33-mode piezoelectric ceramic and a rectifier bridge and a power accumulator are electrically connected in turn. By the piezoelectric wave power generation system, the largest piezoelectric constant is used, the frequency of applying active force is improved, the conversion efficiency is greatly improved, the unsteadiness caused by wave periodicity and amplitude variation is avoided, the force applied to the piezoelectric ceramic is compressive stress, and the advantages that a piezoelectric transducer has a long inherent service life and is easy to recycle and adjust, and the like are kept.
Description
Technical field
The utility model relates to a kind of sea wave power generation system, relates in particular to the system that a kind of d33 of employing mode piezoelectric pottery carries out seawave power generation.
Background technique
Great energy is contained in the ocean, and 71% of the ball gross area is taken up an area of in the ocean.The United Nations in 1992 classifies seawave power generation the first place of exploitation regenerable marine energy as, and Britain is placed on the first place of new energy development with the research of seawave power generation, even is called " the 3rd energy ".The relevant patent of relevant seawave power generation has thousands of more than in the world, therefore can predict, and seawave power generation will not only become the important source of renewable energy sources, also will become human from now on main energy sources mode.
First is Princeton ocean power company with the piezoelectricity transformation applications on extensive seawave power generation in the world.First piezoelectric generator abbreviation HPE forms by being suspended in the ocean sheet, web-like or the banded piezopolymer component network between the floating drum and anchor.When floating drum floated in wave, polymer was stretched and loosens, and produces the high pressure low-frequency current, and this electric current is admitted to the electrode that links to each other with polymer, and was adjusted to high voltage direct current by solid electronic device, was sent on the bank by submarine cable then.In case disembarkation can be converted into Ac feed-in electrical network again.Wave energy is free, and piezopolymer almost or fully need not maintenance.Polymer is not subjected to the seawater etch, and can at the end be reclaimed row its projected life in 20 years again and adjust.We can say that the piezoelectricity transformation applications is that its special advantages is arranged to seawave power generation.
The output power of piezoelectric transducer is proportional to active force, applies the frequency and the piezoelectric crystal of active force.For HPE, because then must cause the frequency that applies active force lower (only the several seconds once) on the piezopolymer using floating drum to act directly on; Again because be that utilization stretches and bending is the d31 pattern, the relative d33 pattern of its piezoelectric crystal is lower, more crucial is that piezoelectric constant has good compressive strength, but tensile strength is very low, so when utilizing stretching and bending force, can not use piezoceramic material, though the toughness of piezoelectric material of having utilized the very big raising of polymer in the life-span that has strengthened piezoelectric device, also greatly reduces piezoelectric crystal simultaneously.Whole generating efficiency is subjected to the restriction of these three factors to make its generated output that multikilowatt only be arranged at present, and cost is higher.
In various patents, relate to instant conversion of the most of employings of wave transformation of energy, the storage of considering the wave energy is seldom arranged, and consider that its energy conversion efficiency that wave can store compares low about seawave power generation.As " a kind of wave-type electric generator " that Chinese patent application 00228121.X provides, form by kickboard, fuel tank, accumulator, rotating hydraulic cylinder, oil hydraulic motor and generator.Be connected by oil pipe between rotating hydraulic cylinder and the oil hydraulic motor, wherein high-voltage tube is provided with accumulator, and low pressure fuel pipe is provided with fuel tank; Rotating hydraulic cylinder is located at the kickboard place.Under the effect of wave, the swing that utilizes kickboard to produce drives rotating hydraulic cylinder work, produces high pressure oil in the oil hydraulic cylinder and promotes the oil hydraulic motor rotation, thereby drive generator for electricity generation.
Above-mentioned patent is the kinetic energy that wave can be converted into coil type generating rotor, and it utilizes hydraulic pressure installation to carry out the storage of energy, and this brings persistency just for the generation of electric energy, makes influences such as the periodicity of wave and amplitude reduce to minimum.But it uses oil hydraulic motor to drive the generator for electricity generation mode, because oil hydraulic motor is lower with the efficient that static energy is converted to rotor kinetic energy, so whole generating efficiency must reduce.
The patent that also has is as collecting unrestrained plate, thereby employing is the rotation that pressure stress that impact force with wave is converted to liquid in the oil hydraulic cylinder drives turbine, drives rotor by turbine again and makes the generating of coil type generator set.Shortcoming is clearly, collects unrestrained plate requirement floating drum and will exert oneself simultaneously in certain limit and produce huge Driving force, and " simultaneously " property will make the complexity of system improve.And the energy conversion efficiency of turbine is also relatively lower in ocean environment.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of piezoelectricity sea wave power generation system, and this power generation system structure is simple, cost is cheap relatively, transformation efficiency is high, and practical.
The utility model for the technological scheme that solves its technical problem and adopt is:
A kind of piezoelectricity sea wave power generation system mainly comprises sea wave power system, hydraulic vibrating system and piezoelectricity converting system, wherein:
Described sea wave power system comprises double-floating drum ship, first oil hydraulic cylinder and pressure pan, described double-floating drum ship is fixedlyed connected with first oil hydraulic cylinder, described double-floating drum ship can drive first oil hydraulic cylinder with the wave fluctuating liquid in this first oil hydraulic cylinder is pumped in the pressure pan, thereby the kinetic energy that makes wave is converted into the static energy of liquid, finishes the sea wave power systemic-function;
Described hydraulic vibrating system comprises the motor and second oil hydraulic cylinder, motive bearing one end of this motor extends out and is connected into together axle mutually with the rotating shaft piston, this rotating shaft piston seal is movably set in second oil hydraulic cylinder, and described motor can drive the rotating shaft piston rotation and make second piston produce simple harmonic oscillation in second oil hydraulic cylinder; Thereby finish the hydraulic vibrating system function;
Described piezoelectricity converting system comprises piezoelectric stack, rectifier bridge and accumulator, in the described hydraulic vibrating system in second oil hydraulic cylinder simple harmonic oscillation of second piston can produce the pressure stress of accurate simple harmonic oscillation to piezoelectric stack, thereby make the direct piezoelectric effect of d33 mode piezoelectric pottery that mechanical energy is converted into electric energy, each layer at piezoelectric stack is drawn upper/lower electrode, forms one of series, parallel and series-parallel circuit mutually and reaches suitable output power parameter and electrically connect rectifier bridge, accumulator, change-over circuit and output circuit successively.The charge property that the positive and negative electric charge that produces in each cycle through the effect of rectifier bridge all is converted into requirement is stored in the accumulator, be adjusted into high frequency ac signal and carry out the output attribute coupling through change-over circuit, finish piezoelectricity converting system function through output circuit adjustment voltage and phase place.
As further improvement of the utility model, described double-floating drum ship can drive first oil hydraulic cylinder: be communicated with by pipeline between described first oil hydraulic cylinder and pressure pan, and be provided with first one-way valve that only can make liquid flow to pressure pan from described first oil hydraulic cylinder on this pipeline; On described first oil hydraulic cylinder, be provided with first piston, be fixed with first static pulley and second static pulley on this double-floating drum ship; First cable, one end and first piston are connected, and the first cable the other end connects by first static pulley and anchoring, and anchor can make the pressure in first oil hydraulic cylinder increase when moving by first static pulley tension first piston; Second cable, one end and first piston are connected, and the second cable the other end is connected by second static pulley and weight, when weight moves by second static pulley tension first piston pressure in first oil hydraulic cylinder are reduced.Double-floating drum ship dipping and heaving not only under the effect of wave, but also under the promotion of wave, to a direction skew.When double-floating drum ship during away from anchor, first cable is a pulling force, and move by first static pulley pulling first piston, first piston rises by second cable and second static pulley pulling weight and weight potential energy is increased, first piston produced vertical first cylinder and inside pressure and made that pressure increases first oil hydraulic cylinder in this moment, and then made first oil hydraulic cylinder by first one-way valve highly pressurised liquid be pumped in the pressure pan form storage with static energy.
As another kind of mode of execution of the present utility model, outside described first oil hydraulic cylinder, be provided with steel frame construction, the first piston steel frame construction that is connected, the relative both sides of steel frame construction are fixed first and second cable respectively, realize the be connected function of first and second cable of first piston with this.
As further improvement of the utility model, described motor can drive the rotating shaft piston rotation and make the structure of second piston generation simple harmonic oscillation be: described motor is an oil hydraulic motor, be communicated with by pipeline between described pressure pan and the motor, and on this pipeline, be provided with second one-way valve that only can make liquid flow to motor by pressure pan, thereby realize that drive motor rotates, certainly direct current or alternating current motor then need not hydraulic driving in this way for motor, alternating current motor then need be used speed reducer, these are all for being equal to replacement, as long as generally speaking can drive the rotating shaft piston rotation, all be this routine claimed scope; Described second oil hydraulic cylinder is isolated into a hydraulic pressure cavity and a cavity by second piston, and described rotating shaft piston is movably set in this hydraulic pressure cavity; Be provided with low pressure (LP) cylinder, the hydraulic pressure cavity of described second oil hydraulic cylinder is provided with high pressure entry and low tension outlet, be communicated with by pipeline between the high pressure entry of this second oil hydraulic cylinder and the pressure pan, be communicated with by pipeline between the low tension outlet of this second oil hydraulic cylinder and the low pressure (LP) cylinder, described rotating shaft piston is provided with a pair of through hole, this is communicated with the hydraulic pressure cavity of through hole with described second oil hydraulic cylinder, only can make during described rotating shaft piston rotation described this to through hole in the through hole and the conducting of one of described high pressure entry and low tension outlet, open or closed condition thereby one of high pressure entry and low tension outlet are in; Pressure pan drives oil hydraulic motor and drives the rotating shaft piston rotation, when through hole on the rotating shaft piston and high pressure entry connection, low tension outlet is closed, and liquid flows to second oil hydraulic cylinder from pressure pan, pressure increases in second oil hydraulic cylinder thereby make, and makes second piston produce corresponding stress; When the rotating shaft piston rotation disconnects and when being communicated with low tension outlet, the interior liquid of second oil hydraulic cylinder flows to low pressure (LP) cylinder from low tension outlet, thereby the interior pressure of second oil hydraulic cylinder is reduced to through hole and high pressure entry, the stress on second piston reduces and even disappears.
As further improvement of the utility model, connect by pipeline between described first oil hydraulic cylinder and the low pressure (LP) cylinder, and between this pipeline, be provided with the one-way valve that only can make liquid flow to first oil hydraulic cylinder from low pressure (LP) cylinder.
As further improvement of the utility model, the structure that the simple harmonic oscillation of second piston can produce the pressure stress of accurate simple harmonic oscillation to piezoelectric stack in second oil hydraulic cylinder in the described hydraulic vibrating system is: fix a support on the double-floating drum ship, on this support, place piezoelectric stack, and make the certain precompression of formation between second piston and the piezoelectric stack.
As further improvement of the utility model, described piezoelectric stack is to utilize the direct piezoelectric effect of d33 pattern to come switching energy.
The beneficial effects of the utility model are: use d33 mode piezoelectric pottery to carry out seawave power generation as the Conversion of energy main body, utilize hydraulic pressure installation, transformation mode by wave energy-static energy-vibrational energy-electric energy, utilized the highest piezoelectric crystal, improved the frequency that applies active force, improved conversion efficiency greatly, the unstability of having avoided wave periodicity and changes in amplitude to bring, the power that piezoelectric constant is applied is pressure, keep the intrinsic long lifetime of piezoelectric transducer, easily reclaimed advantages such as adjustment.
Description of drawings
Fig. 1 is the plan view of piezoelectricity sea wave power generation system described in the utility model;
Fig. 2 is the side view of piezoelectricity sea wave power generation system described in the utility model.
In conjunction with the accompanying drawings, make the following instructions:
1---weight 2---double-floating drum ship
3---anchors 4---, first cable
5---first static pulley 6---, first oil hydraulic cylinder
7---steel frame construction 8---pressure pan
9---motors 10---, second piston
11---piezoelectric stacks 12---, second one-way valve
13---rotating shaft piston 14---high pressure entry
15---low tension outlets 16---, second oil hydraulic cylinder
17---low pressure (LP) cylinders 18---, second static pulley
19---first pistons 20---, first one-way valve
21---supports 22---, second cable
100---the sea level
Embodiment
Below in conjunction with accompanying drawing and concrete mode of execution the utility model is described in further detail:
Fig. 1 is a piezoelectricity sea wave power generation system schematic representation, it has comprised weight 1, double-floating drum ship 2, anchor 3, first cable 4, second cable 22, first static pulley 5, second static pulley 18, first oil hydraulic cylinder 6, second oil hydraulic cylinder 16, steel frame construction 7, pressure pan 8, oil hydraulic motor 9, first piston 19, second piston 10, piezoelectric stack 11, first one-way valve 20, second one-way valve 12, rotating shaft piston 13, high pressure entry 14, low tension outlet 15, low pressure (LP) cylinder 17, support 21, and double-floating drum ship 2 floats on the sea level 100.
Double-floating drum ship 2 dipping and heaving not only under the effect of wave, but also under the promotion of wave, to a direction skew.When double-floating drum ship 2 during away from anchor 3, be pulling force in first cable 4, effect by first static pulley 5, the 4 pairs of steel frame constructions of cable 7 of winning are produced perpendicular to first oil hydraulic cylinder 6 and the inside pressure, and at this moment first oil hydraulic cylinder 6 pumps into highly pressurised liquid by first one-way valve 20 that the form with static energy stores in the pressure pan 8; Pulling force in first cable 4 makes weight 1 potential energy increase simultaneously.
Double-floating drum ship 2 does not have active force under the wave effect during to anchor 3 motion in first cable 4, and steel frame construction 7 makes the oil hydraulic cylinder 6 of winning be subjected to outside pulling force under the effect of weight 1, and at this moment first oil hydraulic cylinder 6 sucks liquid in the low pressure (LP) cylinder 17 by one-way valve.
By the continuous active force of wave, thereby make the oil hydraulic cylinder 6 of winning constantly from low pressure (LP) cylinder 17, suck liquid, and change into highly pressurised liquid and pump into pressure pan 8 and store.Finished like this Wave energy be converted into hydrostatic pressure in the pressure pan can step.
Piezoelectric stack 11 each layer all have the two poles of the earth up and down, draw mutual formation series, parallel or series-parallel circuit to reach suitable power output parameter by electrode, utilize rectification circuit that the charge property that the positive and negative electric charge that produces in each cycle all transfers requirement to is stored in the accumulator.
Electric energy in the accumulator is sent on the bank by submarine cable.In case disembarkation is converted into Ac feed-in electrical network again, thereby finishes the purpose that reaches seawave power generation.
Claims (6)
1. a piezoelectricity sea wave power generation system mainly comprises sea wave power system, hydraulic vibrating system and piezoelectricity converting system, it is characterized in that:
Described sea wave power system comprises double-floating drum ship (2), first oil hydraulic cylinder (6) and pressure pan (8), described double-floating drum ship (2) is fixedlyed connected with first oil hydraulic cylinder (6), and described double-floating drum ship (2) can drive first oil hydraulic cylinder (6) the interior liquid of this first oil hydraulic cylinder (6) is pumped in the pressure pan (8);
Described hydraulic vibrating system comprises motor (9) and second oil hydraulic cylinder (16), motive bearing one end of this motor (9) extends out and is connected into together axle mutually with rotating shaft piston (13), this rotating shaft piston (13) sealing is movably set in second oil hydraulic cylinder (16), and described motor (9) can drive rotating shaft piston (13) rotation and make second piston (10) produce simple harmonic oscillation in second oil hydraulic cylinder (16);
Described piezoelectricity converting system comprises piezoelectric stack (11), rectifier bridge and accumulator, the simple harmonic oscillation of second piston can be to the pressure stress of the accurate simple harmonic oscillation of piezoelectric stack (11) generation in second oil hydraulic cylinder (16) in the described hydraulic vibrating system, each layer at piezoelectric stack (11) is drawn upper/lower electrode, and what form series, parallel and series-parallel circuit mutually electrically connects rectifier bridge and accumulator in the lump successively.
2. piezoelectricity sea wave power generation system according to claim 1, it is characterized in that: described double-floating drum ship (2) can drive first oil hydraulic cylinder (6) and with the structure that the interior liquid of this first oil hydraulic cylinder (6) pumps in the pressure pan (8) be: be communicated with by pipeline between described first oil hydraulic cylinder (6) and pressure pan (8), and be provided with first one-way valve (20) that only can make liquid flow to pressure pan (8) from described first oil hydraulic cylinder (6) on this pipeline; On described first oil hydraulic cylinder (6), be provided with first piston (19), be fixed with first static pulley (5) and second static pulley (18) on this double-floating drum ship (2); First cable (4) one ends and first piston (19) are connected, and first cable (4) the other end is connected by first static pulley (5) and anchor (3), and anchor (3) can make the pressure in first oil hydraulic cylinder increase when moving by first static pulley (5) tension first piston; Second cable (22) one ends and first piston (19) are connected, second cable (22) the other end is connected by second static pulley (18) and weight (1), and weight can make the pressure in first oil hydraulic cylinder reduce when moving by second static pulley (18) tension first piston.
3. piezoelectricity sea wave power generation system according to claim 2, it is characterized in that: outside this first oil hydraulic cylinder (6), be provided with steel frame construction (7), first piston (19) steel frame construction (7) that is connected, the relative both sides of steel frame construction (7) are fixed first and second cable respectively.
4. piezoelectricity sea wave power generation system according to claim 1, it is characterized in that: the structure that described motor (9) can drive rotating shaft piston (13) rotation and make second piston (10) produce simple harmonic oscillation is: described motor (9) is an oil hydraulic motor, be communicated with by pipeline between described pressure pan (8) and the motor (9), and on this pipeline, be provided with second one-way valve (12) that only can make liquid flow to motor (9) by pressure pan (8); Described second oil hydraulic cylinder (16) is isolated into a hydraulic pressure cavity and a cavity by second piston (10), and described rotating shaft piston (13) is movably set in this hydraulic pressure cavity; Be provided with low pressure (LP) cylinder (17), the hydraulic pressure cavity of described second oil hydraulic cylinder (16) is provided with high pressure entry (14) and low tension outlet (15), be communicated with by pipeline between the high pressure entry of this second oil hydraulic cylinder and the pressure pan, the low tension outlet of this second oil hydraulic cylinder and low pressure (LP) cylinder are communicated with by pipeline between (17), described rotating shaft piston is provided with a pair of through hole, this is communicated with the hydraulic pressure cavity of through hole with described second oil hydraulic cylinder (16), described rotating shaft piston (13) only can make when rotating described this to through hole in the through hole and the conducting of one of described high pressure entry and low tension outlet.
5. piezoelectricity sea wave power generation system according to claim 4, it is characterized in that: connect by pipeline between described first oil hydraulic cylinder (6) and the low pressure (LP) cylinder (17), and between this pipeline, be provided with the one-way valve that only can make liquid flow to first oil hydraulic cylinder (6) from low pressure (LP) cylinder (17).
6. piezoelectricity sea wave power generation system according to claim 1, it is characterized in that: the structure that the simple harmonic oscillation of second piston can produce the pressure stress of accurate simple harmonic oscillation to piezoelectric stack (11) in second oil hydraulic cylinder (16) in the described hydraulic vibrating system is: fix a support (21) on the double-floating drum ship, go up to place piezoelectric stack (11) at this support (21), and make between second piston (10) and the piezoelectric stack (11) and form precompression.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202784839U CN201794706U (en) | 2010-07-30 | 2010-07-30 | Piezoelectric wave power generation system |
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| CN2010202784839U CN201794706U (en) | 2010-07-30 | 2010-07-30 | Piezoelectric wave power generation system |
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| CN201794706U true CN201794706U (en) | 2011-04-13 |
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| CN2010202784839U Expired - Fee Related CN201794706U (en) | 2010-07-30 | 2010-07-30 | Piezoelectric wave power generation system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305166A (en) * | 2011-08-24 | 2012-01-04 | 冯宁 | Semi-submersible dual-concentration wave power generation device |
| CN102345552A (en) * | 2010-07-30 | 2012-02-08 | 昆山攀特电陶科技有限公司 | Piezoelectric sea wave power generation system |
| CN102444536A (en) * | 2011-12-13 | 2012-05-09 | 山东科技大学 | Small-sized marine piezoelectric electricity generating device |
| CN105756845A (en) * | 2016-04-25 | 2016-07-13 | 浙江大学海洋学院 | Novel floating wave energy power generation device |
| CN105804928A (en) * | 2016-05-11 | 2016-07-27 | 浙江大学 | Mixed-type wave power generation device |
| CN106337774A (en) * | 2016-11-25 | 2017-01-18 | 华南农业大学 | Multi-dimensional energy ocean wave power generation device |
| CN107701357A (en) * | 2017-10-18 | 2018-02-16 | 张耀辰 | A kind of TRT using waves of seawater energy |
| US10601352B2 (en) * | 2014-04-01 | 2020-03-24 | IFP Energies Nouvelles | Method of controlling a wave energy conversion system maximizing the power output |
-
2010
- 2010-07-30 CN CN2010202784839U patent/CN201794706U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345552A (en) * | 2010-07-30 | 2012-02-08 | 昆山攀特电陶科技有限公司 | Piezoelectric sea wave power generation system |
| CN102345552B (en) * | 2010-07-30 | 2013-05-01 | 昆山攀特电陶科技有限公司 | Piezoelectric sea wave power generation system |
| CN102305166A (en) * | 2011-08-24 | 2012-01-04 | 冯宁 | Semi-submersible dual-concentration wave power generation device |
| CN102444536A (en) * | 2011-12-13 | 2012-05-09 | 山东科技大学 | Small-sized marine piezoelectric electricity generating device |
| CN102444536B (en) * | 2011-12-13 | 2013-12-04 | 山东科技大学 | Small-sized marine piezoelectric electricity generating device |
| US10601352B2 (en) * | 2014-04-01 | 2020-03-24 | IFP Energies Nouvelles | Method of controlling a wave energy conversion system maximizing the power output |
| CN105756845A (en) * | 2016-04-25 | 2016-07-13 | 浙江大学海洋学院 | Novel floating wave energy power generation device |
| CN105804928A (en) * | 2016-05-11 | 2016-07-27 | 浙江大学 | Mixed-type wave power generation device |
| CN106337774A (en) * | 2016-11-25 | 2017-01-18 | 华南农业大学 | Multi-dimensional energy ocean wave power generation device |
| CN107701357A (en) * | 2017-10-18 | 2018-02-16 | 张耀辰 | A kind of TRT using waves of seawater energy |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130730 |