CN105508126A - Wave energy capturing device - Google Patents
Wave energy capturing device Download PDFInfo
- Publication number
- CN105508126A CN105508126A CN201410493999.8A CN201410493999A CN105508126A CN 105508126 A CN105508126 A CN 105508126A CN 201410493999 A CN201410493999 A CN 201410493999A CN 105508126 A CN105508126 A CN 105508126A
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- CN
- China
- Prior art keywords
- rod member
- wave energy
- energy capture
- capture device
- extension
- 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.)
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Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Abstract
The invention provides a wave energy capturing device which is suitable for being coupled with a power generation device. The first rod is pivoted on the base. The second rod piece is pivoted on the first rod piece. The buoyancy piece is fixedly arranged on the second rod piece. The righting moment of the wave energy acquisition device is matched with the period of the waves.
Description
Technical field
The present invention relates to a kind of energy capture device, particularly relate to a kind of Wave energy capture device.
Background technique
Along with being on the rise of energy crisis and greenhouse effect, development low cost and the renewable sources of energy that can effectively the utilize important issue that to be government unit extremely urgent.Due to Taiwan seagirt, congenital environment is applicable to wave-activated power generation, if therefore can be apt to add utilize this natural resources, the pressure of the Taiwan electric power supply that is expected effectively to releive.
The motor pattern of wave own has six-freedom degree, comprises the rotary motion of vertical shift (Surge), traversing (Sway), the rise and fall translational motion of (Heave) and rolling (Roll), pitching (Pitch), yaw (Yaw).According to forefathers' research, compared to the energy only capturing heave direction, if the Wave energy risen and fallen with vertical shift two dimensions can be captured simultaneously, generated energy and the efficiency of wave-activated power generation unit can be improved.
Summary of the invention
The invention reside in and a kind of Wave energy capture device is provided, by the restriction that the design solution mechanism itself with restoring force installs, go to mate wave period with the metacenter height GM changing buoyancy piece by the design adjusting mass block position, reach the lifting of generating conversion efficiency.
Disclosed Wave energy capture device, includes a pedestal, one first rod member, one second rod member and a buoyancy piece.First rod member is hubbed at pedestal.Second rod member is hubbed at the first rod member.Buoyancy piece is fixedly arranged on the second rod member.
Disclosed Wave energy capture device, includes a pedestal, one first rod member, one second rod member, a buoyancy piece and a barycenter adjustment piece.First rod member is hubbed at pedestal.Second rod member is hubbed at the first rod member.Buoyancy piece is fixedly arranged on the second rod member.Barycenter adjustment piece is located at the first rod member movably.Wherein change the righting moment of Wave energy capture device.
According to the Wave energy capture device that the invention described above discloses, the righting moment of Wave energy capture device is set by buoyancy piece and rotatable first rod member and the second rod member, the righting moment of Wave energy capture device is enable to be matched with the cycle of wave, to be lifted out the acquisition width ratio (being proportional to generating efficiency) of Wave energy capture device.
Above about the explanation of content of the present invention and the explanation of following mode of execution in order to demonstration with explain principle of the present invention, and provide right of the present invention further to explain.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of Wave energy capture device described according to a first embodiment of the present invention;
Fig. 2 is the schematic side view of Fig. 1;
Fig. 3 is under different righting moment, the relation schematic diagram of the cycle of wave and the acquisition width ratio of Wave energy capture device;
Fig. 4 and Fig. 5 is the running schematic diagram of the Wave energy capture device of Fig. 1;
Fig. 6 is the schematic perspective view of Wave energy capture device described according to a second embodiment of the present invention;
Fig. 7 is the schematic side view of Fig. 6;
Fig. 8 is the cycle of wave and the relation schematic diagram of the acquisition width ratio of Wave energy capture device;
Fig. 9 is the schematic perspective view that the apparent weight adjustment piece of described according to a third embodiment of the present invention Wave energy capture device is opened;
Figure 10 is the schematic perspective view that the apparent weight adjustment piece of Fig. 9 is closed.
Reference character
10: Wave energy capture device 100: pedestal
200: the first rod members 210: pivot joint section
220: the first extension, extensions 230: the second
300: the second rod members 310: pivot end
320: connecting end 400: buoyancy piece
500: righting moment adjustment piece 550: the first drive motor
560: the first screw rods 600: pouring weight
700: barycenter adjustment piece 750: the second drive motor
760: the second screw rods 800: apparent weight adjustment piece
810: body 811: opening
820: baffle plate
Embodiment
Please refer to Fig. 1 to Fig. 2.Fig. 1 is the schematic perspective view of Wave energy capture device described according to a first embodiment of the present invention.Fig. 2 is the schematic side view of Fig. 1.
The Wave energy capture device 10 of the present embodiment is suitable for coupling an electricity generating device (not shown), produces electric energy to be ordered about electricity generating device by the start of Wave energy capture device 10.Specifically, Wave energy capture device 10 comprises pedestal 100,1 first rod member 200,1 second rod member 300, buoyancy piece 400, righting moment adjustment piece 500 and a pouring weight 600.Wave energy capture device 10 also comprises one first drive motor 550 and one first screw rod 560.
Pedestal 100 may float on sea or is fixed on bank.
One end of first rod member 200 is hubbed at pedestal 100.
Second rod member 300 has relative pivot end 310 and a connecting end 320.The pivot end 310 of the second rod member 300 is hubbed at the first rod member 200 one end away from pedestal 100.
Buoyancy piece 400 is fixedly arranged on the second rod member 300, and the pivot end 310 of center to the second rod member 300 of buoyancy piece 400 keeps one first distance D3.The connecting end 320 of center to the second rod member 300 of buoyancy piece 400 keeps a second distance D4, and the ratio between the first distance D3 and second distance D4 is 2 to 3.The freedom of movement of the first rod member 200 and the freedom of movement of the second rod member 300 make buoyancy piece 400 relative to pedestal 100 along circular or oval orbiting motion, but not can swing back and forth along curve.In addition, in the present embodiment, the profile of buoyancy piece 400 is such as straight-tube shape.
The ratio that it should be noted that between above-mentioned first distance D3 and second distance D4 is 2 to 3 is utilize the equilibrium of forces derivation of equation, and as the preliminary foundation of design, but in fact because buoyancy piece 400 cuts water area difference, this value will adjust.In other words, as long as GM (metacentric height) > 0 of the first rod member 200, second rod member 300 and buoyancy piece 400.Therefore, the ratio between above-mentioned first distance D3 and second distance D4 is not limited to 2 to 3.
Righting moment adjustment piece 500 is such as an iron block, and is located at the second rod member 300 slidably.
The second rod member 300 is located at by first drive motor 550.First screw rod 560 connects the output shaft of the first drive motor 550 and is screwed together in righting moment adjustment piece 500.First drive motor 550 can drive the first screw rod 560 rotate and make relative second rod member 300 of righting moment adjustment piece 500 slide, and makes righting moment adjustment piece 500 can along the bearing of trend of the first screw rod 560 towards pivot end 310 or connecting end 320 slippage.Whereby, adjust the distance between the center of gravity of righting moment adjustment piece 500 and the centre of buoyancy of buoyancy piece 400 and make the righting moment of Wave energy capture device 10 be matched with the cycle of wave.
In the present embodiment, righting moment is the function of metacentric height GM, and wherein metacentric height is relevant to the second moment of area I of centre of buoyancy distance GB, the buoyancy piece 400 and displacement of volume V of buoyancy piece 400 with the center of gravity of Wave energy capture device 10, and its relation is
when metacentric height GM is greater than zero, buoyancy piece 400 and righting moment adjustment piece 500 can provide vertical shift and the two-way restoring moment that rises and falls to order about buoyancy piece 400 relative to pedestal 100 along circular or oval orbiting motion, and make relative first rod member 200 of the second rod member 300 repeatedly swing.
The size of righting moment also can affect the generating efficiency of Wave energy capture device 10.Specifically, please refer to Fig. 3.Fig. 3 is under different righting moment, the relation schematic diagram of the cycle of wave and the acquisition width ratio of Wave energy capture device.
Carry out guide convergent-divergent by the model theory of similarity in Fig. 3 to carry out numerical simulation and present one first efficacy curve, one second efficacy curve and one the 3rd efficacy curve, these three efficacy curves corresponding different righting moments respectively.Wherein, the righting moment that the first efficacy curve is corresponding is less than righting moment corresponding to the second efficacy curve and is less than righting moment corresponding to the 3rd efficacy curve.As can be known from Fig. 4, when the wave period T reducing guide is about less than 1.7 seconds, the first efficacy curve is better than other efficacy curve, its best acquisition width ratio (capturewidthratio; CWR) (be proportional to generating efficiency) and be about 0.48.That is, when wave period T is less than 1.7 seconds, righting moment is more little better.When wave period T is about greater than 1.7 seconds, the 3rd efficacy curve is better than other article of efficacy curve.That is, when wave period T is greater than 1.7 seconds, righting moment is more large better.Therefore, Wave energy capture device 10, in design with in use, needs corresponding wave period T to adjust the righting moment of Wave energy capture device 10, with the best Wave energy acquisition efficiency of corresponding intrument 10.
Pouring weight 600 is fixed on the connecting end 320 of the second rod member 300, in order to adjust the righting moment of Wave energy capture device 10.
Then, the practice situation of Wave energy capture device 10 is described.Please refer to Fig. 4 to Fig. 5.Fig. 4 and Fig. 5 is the running schematic diagram of the Wave energy capture device of Fig. 1.
For example, as shown in figs. 4 and 5, pedestal 100 is installed on land, bank, and the natural lowering of buoyancy piece 400 is in sea.Because the Wave energy capture device 10 of the present embodiment adopts dual rotary rod type, buoyancy piece 400 is made to have larger space.Therefore, can along circular or elliptical path displacement, and relative first rod member 200 of the second rod member 300 be made repeatedly to move when buoyancy piece 400 is subject to the External Force Acting of the fluctuating of wave and vertical shift.It should be noted that Wave energy capture device 10 can couple an electricity generating device (not shown), produce electric energy to be ordered about electricity generating device by the rotary motion of the second rod member 300.Specifically, such as carry out transmission by the collocation of umbrella gear group (not shown) and connecting rod (not shown) between the second rod member 300 and electricity generating device, rotate to be driven the input shaft (not shown) of electricity generating device by the rotary motion of the second rod member 300.
Please refer to Fig. 6 and Fig. 7.Fig. 6 is the schematic perspective view of Wave energy capture device described according to a second embodiment of the present invention.Fig. 7 is the schematic side view of Fig. 6.The present embodiment is similar to above-mentioned Fig. 1, therefore is only described for deviation.
First rod member 200 of the present embodiment comprises pivot joint section 210,1 first extension 220 and one second extension 230.First extension 220 and the second extension 230 extend in the opposite direction from pivot joint section 210.Pivot joint section 210 is hubbed at pedestal 100.Second rod member 300 is hubbed at one end away from pivot joint section 210, the first extension 220.
Wave energy capture device 10 also comprises barycenter adjustment piece 700,1 second drive motor 750 and one second screw rod 760.
The barycenter adjustment piece 700 of the present embodiment is located at the second extension 230 of the first rod member 200 slidably.But not as limit, in other embodiments, barycenter adjustment piece 700 is located at the first extension 220 of the first rod member 200 slidably.
The second extension 230 is located at by second drive motor 750.Second screw rod 760 connects the second drive motor 750 and is screwed together in barycenter adjustment piece 700.Second drive motor 750 can drive the second screw rod 760 rotate and make relative second extension 230 of barycenter adjustment piece 700 slide, and then the barycenter of adjustment Wave energy capture device 10.
The barycenter change of Wave energy capture device please refer to Fig. 8 to the impact of the generating efficiency of unrestrained energy capture device.Fig. 8 is the cycle of wave and the relation schematic diagram of the acquisition width ratio of Wave energy capture device.
The analog result of Fig. 8 is under the optimized prerequisite of righting moment, then the relation schematic diagram of cycle of wave of presenting of the effect increasing barycenter adjustment piece 700 and the acquisition width ratio of Wave energy capture device 10.Wherein, righting moment optimization refers to that the acquisition width of Wave energy capture device 10 compares with cycle two data of wave to adjust the best righting moment of Wave energy capture device 10 according to the relation schematic diagram of above-mentioned Fig. 3 by elder generation.Then, Fig. 8 is 30 kilograms for the weight of barycenter adjustment piece 700 and barycenter adjustment piece 700 to the first rod member 200 and the distance D5 of the pivoting point of pedestal 100 are 60 centimetres carries out reducing guide and simulate.From analog result, set up barycenter adjustment piece 700 and the acquisition width ratio (being proportional to generating efficiency) of Wave energy capture device 10 can be allowed to reach 0.64 to the barycenter changing Wave energy capture device 10.
It should be noted that above-mentioned Wave energy capture device 10 has righting moment adjustment piece 500 and barycenter adjustment piece 700 simultaneously, but not as limit, in other embodiments, also can only have barycenter adjustment piece 700.
Please refer to Fig. 9 and Figure 10.Fig. 9 is the schematic perspective view that the apparent weight adjustment piece of described according to a third embodiment of the present invention Wave energy capture device is opened.Figure 10 is the schematic perspective view that the apparent weight adjustment piece of Fig. 9 is closed.
The difference of the present embodiment and above-mentioned Fig. 6 is, the present embodiment replaces the barycenter adjustment piece 700 in above-described embodiment with an apparent weight adjustment piece 800.Apparent weight adjustment piece 800 comprises a body 810 and multiple baffle plate 820.Body 810 hangs on the second extension 230.Body 810 has an opening 811.These baffle plates 820 are located at body 810 movably and can close or expose opening 811, and simulate the barycenter Adjustment effect of barycenter adjustment piece 700 by the size of opening 811.Specifically, during actual use, apparent weight adjustment piece 800 can be placed in the sea, and when opening 811 becomes large, then the resistance of seawater reduces, and the rotational velocity of the first rod member 200 is accelerated.When opening 811 diminishes, then the resistance of seawater increases, and makes the rotational velocity of the first rod member 200 slack-off, and then changes the effect that the change in resistance that causes produces to simulate barycenter adjustment piece 700 change in location by opening 811.
It should be noted that above-mentioned Wave energy capture device 10 has righting moment adjustment piece 500 and apparent weight adjustment piece 800 simultaneously, but not as limit, in other embodiments, also can only have apparent weight adjustment piece 800.
According to the Wave energy capture device that the invention described above discloses, by the righting moment of Wave energy capture device can be adjusted by the righting moment adjustment piece that slides of relative second rod member, the righting moment of Wave energy capture device is enable to be matched with the cycle of wave, to be lifted out the acquisition width ratio (being proportional to generating efficiency) of Wave energy capture device.
In addition, Wave energy capture device by adjusting the centroid position of Wave energy capture device by the barycenter adjustment piece that slides of relative first rod member, and then promotes the acquisition width ratio (being proportional to generating efficiency) of Wave energy capture device further.
Moreover Wave energy capture device changes by the openings of sizes of apparent weight adjustment piece the effect emulating barycenter adjustment piece change in location and produce.
Claims (13)
1. a Wave energy capture device, is characterized in that, includes:
One pedestal;
One first rod member, is hubbed at this pedestal;
One second rod member, is hubbed at this first rod member; And
One buoyancy piece, is fixedly arranged on this second rod member;
Wherein, the righting moment of this Wave energy capture device is matched with the cycle of wave.
2. Wave energy capture device according to claim 1, it is characterized in that, also comprise a righting moment adjustment piece, this righting moment adjustment piece is located at this second rod member movably, makes the righting moment of this Wave energy capture device be matched with the cycle of wave with the distance between the centre of buoyancy of the center of gravity and this buoyancy piece that adjust this righting moment adjustment piece.
3. Wave energy capture device according to claim 2, it is characterized in that, also comprise one first drive motor and one first screw rod, this the second rod member is located at by this first drive motor, this first screw rod connects this first drive motor, this righting moment adjustment piece is screwed together in this first screw rod, and this first drive motor can drive this first bolt rotary and make this second rod member slip relatively of this righting moment adjustment piece.
4. Wave energy capture device according to claim 3, is characterized in that, also comprises a barycenter adjustment piece, is located at this first rod member movably.
5. Wave energy capture device according to claim 4, it is characterized in that, this first rod member comprises a pivot joint section, one first extension and one second extension, this first extension and this second extension extend in the opposite direction from this pivot joint section, this pivot joint section is hubbed at this pedestal, this second rod member is hubbed at this first extension, and this barycenter adjustment piece is located at this second extension movably.
6. Wave energy capture device according to claim 4, it is characterized in that, also comprise one second drive motor and one second screw rod, this the second extension is located at by this second drive motor, this second screw rod connects this second drive motor, this barycenter adjustment piece is screwed together in this second screw rod, and this second drive motor can drive this second bolt rotary and make this barycenter adjustment piece relatively slide this second extension.
7. Wave energy capture device according to claim 3, it is characterized in that, also comprise an apparent weight adjustment piece, this apparent weight adjustment piece comprises a body and multiple baffle plate, this body hangs on this second extension, this body has an opening, and those baffle plates are located at this body movably and can close or expose this opening.
8. Wave energy capture device according to claim 1, is characterized in that, the opposite end two of this first rod member is articulated in this pedestal and this second rod member respectively, and the lenth ratio of this first rod member and this second rod member is between 0.5 and 1.5.
9. Wave energy capture device according to claim 1, it is characterized in that, also comprise a pouring weight, this second rod member has a relative pivot end and a connecting end, this pivot end of this second rod member is hubbed at this first rod member, and this pouring weight is fixed on this connecting end of this second rod member.
10. Wave energy capture device according to claim 1, is characterized in that, the profile of this buoyancy piece is strip.
11. 1 kinds of Wave energy capture devices, is characterized in that, include:
One pedestal;
One first rod member, is hubbed at this pedestal;
One second rod member, is hubbed at this first rod member;
One buoyancy piece, is fixedly arranged on this second rod member; And
One barycenter adjustment piece, is located at this first rod member movably;
Wherein, the righting moment of this Wave energy capture device is matched with the cycle of wave.
12. Wave energy capture devices according to claim 11, it is characterized in that, this first rod member comprises a pivot joint section, one first extension and one second extension, this first extension and this second extension extend in the opposite direction from this pivot joint section, this pivot joint section is hubbed at this pedestal, this second rod member is hubbed at this first extension, and this barycenter adjustment piece is located at this second extension movably.
13. Wave energy capture devices according to claim 11, it is characterized in that, also comprise a pouring weight, this second rod member has a relative pivot end and a connecting end, this pivot end of this second rod member is hubbed at this first rod member, and this pouring weight is fixed on this connecting end of this second rod member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103130820 | 2014-09-05 | ||
| TW103130820A TWI567296B (en) | 2014-09-05 | 2014-09-05 | Wave energy capture device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105508126A true CN105508126A (en) | 2016-04-20 |
| CN105508126B CN105508126B (en) | 2018-01-23 |
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ID=55716356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410493999.8A Active CN105508126B (en) | 2014-09-05 | 2014-09-24 | Wave energy capturing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105508126B (en) |
| TW (1) | TWI567296B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418286A (en) * | 1981-12-07 | 1983-11-29 | Lisbon Scott | Wave and tidal energy driven electric generator |
| US4931662A (en) * | 1988-01-26 | 1990-06-05 | Burton Lawrence C | Wave energy system |
| CN102536611A (en) * | 2012-02-10 | 2012-07-04 | 华北电力大学 | High-efficient sea wave power generation device |
| CN103867375A (en) * | 2014-03-24 | 2014-06-18 | 长沙理工大学 | Buoyancy swing plate design adopting gravity sliding block |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PH25051A (en) * | 1988-01-26 | 1991-01-28 | Lawrence C Burton | Wave energy system |
-
2014
- 2014-09-05 TW TW103130820A patent/TWI567296B/en active
- 2014-09-24 CN CN201410493999.8A patent/CN105508126B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418286A (en) * | 1981-12-07 | 1983-11-29 | Lisbon Scott | Wave and tidal energy driven electric generator |
| US4931662A (en) * | 1988-01-26 | 1990-06-05 | Burton Lawrence C | Wave energy system |
| CN102536611A (en) * | 2012-02-10 | 2012-07-04 | 华北电力大学 | High-efficient sea wave power generation device |
| CN103867375A (en) * | 2014-03-24 | 2014-06-18 | 长沙理工大学 | Buoyancy swing plate design adopting gravity sliding block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105508126B (en) | 2018-01-23 |
| TW201610290A (en) | 2016-03-16 |
| TWI567296B (en) | 2017-01-21 |
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