JPS636748B2 - - Google Patents
Info
- Publication number
- JPS636748B2 JPS636748B2 JP55020909A JP2090980A JPS636748B2 JP S636748 B2 JPS636748 B2 JP S636748B2 JP 55020909 A JP55020909 A JP 55020909A JP 2090980 A JP2090980 A JP 2090980A JP S636748 B2 JPS636748 B2 JP S636748B2
- Authority
- JP
- Japan
- Prior art keywords
- floating body
- shaft
- generator
- nut
- wave energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【発明の詳細な説明】
本発明は海洋等の波のエネルギーを電力又は流
体圧として取出す波エネルギーの変換装置に関
し、簡単かつ効率よく変換できる装置の提案を目
的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wave energy conversion device that extracts ocean wave energy as electric power or fluid pressure, and an object of the present invention is to propose a device that can convert wave energy easily and efficiently.
以下本発明の一実施例を図面に基づいて説明す
る。１は基台２に設置された箱状の支持枠であ
る。支持枠１には昇降軸３が貫通され、昇降軸３
の下端に浮体４が揺動自在に枢支されている。昇
降軸３はボールねじ機構のねじ軸からなるもの
で、略全長にわたり周面にねじ溝５を有してお
り、昇降軸３に多数の球体６を介して螺合するナ
ツト７が支持枠１にスラスト軸受８，９によつて
回転自在に支持されている。ナツト７は外周が歯
車部７ａとして構成され、支持枠１内に設置され
た発電機１０の入力軸の歯車１１にナツト７の歯
車部７ａが噛合している。発電機１０は入力軸の
正逆いずれの回転によつても出力を得られるもの
である。なお、昇降軸３に対して適宜の回転止め
手段を設けてもよい。 An embodiment of the present invention will be described below based on the drawings. 1 is a box-shaped support frame installed on a base 2. The lifting shaft 3 passes through the support frame 1, and the lifting shaft 3
A floating body 4 is swingably supported at the lower end of the floating body 4. The lifting shaft 3 is a screw shaft of a ball screw mechanism, and has a thread groove 5 on its circumferential surface over almost its entire length. It is rotatably supported by thrust bearings 8 and 9. The outer periphery of the nut 7 is configured as a gear portion 7a, and the gear portion 7a of the nut 7 meshes with a gear 11 of an input shaft of a generator 10 installed within the support frame 1. The generator 10 can obtain output by rotating the input shaft in either forward or reverse directions. Note that the elevating shaft 3 may be provided with an appropriate rotation stopper.
浮体４は、中空の板状の浮体本体１２の中央に
支持パイプ１３を突設し、浮体本体１２の上面と
支持パイプ１３との間に板状の補強リブ１４を４
方に設けたものである。浮体４の昇降軸３による
支持は、浮体４の支持パイプ１３の上端に固設し
た回転支軸１５を、昇降軸３の下端に設けられた
ブラケツト１６で回転自在に支持することにより
なされている。回転支軸１５には歯車１７が固着
され、歯車１７はブラケツト１６内に設置された
発電機１８の入力軸の歯車１９に噛合している。
発電機１８は昇降軸３用の発電機１０と同様に正
逆いずれの回転でも出力が得られるものである。
発電機１８の出力ケーブル２０は昇降軸３を通し
て外部に取り出される。 The floating body 4 has a support pipe 13 protruding from the center of a hollow plate-shaped floating body body 12, and a plate-shaped reinforcing rib 14 between the upper surface of the floating body body 12 and the support pipe 13.
It was set up on the side. The floating body 4 is supported by the lifting shaft 3 by rotatably supporting a rotary support shaft 15 fixed to the upper end of the support pipe 13 of the floating body 4 by a bracket 16 provided at the lower end of the lifting shaft 3. . A gear 17 is fixed to the rotating support shaft 15, and the gear 17 meshes with a gear 19 of an input shaft of a generator 18 installed in the bracket 16.
The generator 18, like the generator 10 for the lifting shaft 3, is capable of producing an output in either forward or reverse rotation.
The output cable 20 of the generator 18 is taken out to the outside through the lifting shaft 3.
浮体４には重心位置調整用の水を内部に給排す
るポンプ２１がホース２２を介して接続されてい
る。ポンプ２１は基台２に設置されている。 A pump 21 for supplying and discharging water for adjusting the center of gravity position is connected to the floating body 4 via a hose 22. The pump 21 is installed on the base 2.
次に波エネルギーの変換方法を説明する。波エ
ネルギー取出装置の浮体４を第１図のように水面
ｌに浮かべる。波の横揺れは浮体４が回転支軸１
５の軸心回りで正逆に揺動することにより、ブラ
ケツト１６内の発電機１８の入力軸の正逆回転に
変換され、発電機１８から電気出力として取り出
される。波の上下揺れは、昇降軸３が浮体４と共
に昇降することにより、ナツト７の正逆回転に変
換され、発電機１０から電気出力として取り出さ
れる。昇降軸３とナツト７とは球体６を介して螺
合しているので、昇降軸３は自由に円滑に昇降で
きる。このようにして、波の横揺れ、上下揺れ共
に、そのエネルギーを取り出すことができる。 Next, a method of converting wave energy will be explained. A floating body 4 of a wave energy extraction device is floated on the water surface l as shown in FIG. The horizontal sway of the waves is caused by the floating body 4 being the rotational support shaft 1.
By swinging in the forward and reverse directions around the axis 5, the input shaft of the generator 18 in the bracket 16 is converted into forward and reverse rotation, and is taken out from the generator 18 as an electrical output. The up-and-down movement of the waves is converted into forward and reverse rotation of the nut 7 as the lifting shaft 3 moves up and down together with the floating body 4, and is extracted as electrical output from the generator 10. Since the elevating shaft 3 and the nut 7 are screwed together via the sphere 6, the elevating shaft 3 can freely and smoothly move up and down. In this way, it is possible to extract the energy from both the horizontal and vertical movement of the waves.
一般に、浮体の揺動運動を利用する場合、浮体
の最も良く揺れる状態を利用すれば効果的であ
り、そのためには浮体の固有周期と波の周期とを
同調させる必要がある。一方、波の周期は時間に
よつて変化するが、これに対し本実施例によれ
ば、ポンプ２１によつて浮体４内に水を給排し、
浮体４の重心を変えることによつて浮体４の固有
周期を変化させることができるので、常に同調を
図つて効果的に波のエネルギーを取り出すことが
できる。 Generally, when using the rocking motion of a floating body, it is effective to utilize the state in which the floating body swings best, and for this purpose, it is necessary to synchronize the natural period of the floating body and the period of the waves. On the other hand, the period of waves changes with time, but according to this embodiment, water is supplied and discharged into the floating body 4 by the pump 21,
Since the natural period of the floating body 4 can be changed by changing the center of gravity of the floating body 4, it is possible to always achieve synchronization and extract wave energy effectively.
なお、上記実施例では、発電機１０，１８を用
いたが、これら発電機１０，１８の代りに回転式
ポンプを用いてもよい。この場合、回転式ポンプ
は入力軸の正逆いずれの回転によつても作動流体
を吐出するものを用いる。 Although the generators 10 and 18 are used in the above embodiment, rotary pumps may be used instead of the generators 10 and 18. In this case, a rotary pump is used that discharges the working fluid by either forward or reverse rotation of the input shaft.
本発明は以上説明したように実施することがで
き、これによれば昇降自在な昇降軸の下端に揺動
自在に取り付けた浮体を水面に浮かべ、浮体の揺
動および昇降軸の昇降を、歯車およびボールねじ
機構を介して発電機又はポンプの出力として取り
出すので、簡単かつコンパクトな装置により、波
の横揺れおよび上下揺れを共に変換することがで
き、また浮体内に水を注入して浮体の固有周期を
波の周期に同調させることができ、さらに浮体は
回転自在に支持されるとともに４方に板状の補強
リブが設けられており、波に対して抵抗を最も大
きく受ける方向に向き、したがつて効果的なエネ
ルギー変換を行なうことができる。 The present invention can be carried out as described above, and according to this, a floating body that is swingably attached to the lower end of a vertically movable vertical axis is floated on the water surface, and the rocking of the floating body and the vertical movement of the vertical axis are controlled by gears. Since the output is taken out as the output of a generator or pump via a ball screw mechanism, it is possible to convert both the horizontal and vertical motion of waves with a simple and compact device. The natural period can be tuned to the wave period, and the floating body is rotatably supported and plate-shaped reinforcing ribs are provided on four sides, so that the floating body is oriented in the direction that receives the greatest resistance from waves. Therefore, effective energy conversion can be performed.
図面は本発明の一実施例に係る波エネルギーの
変換装置を示すもので、第１図は縦断側面図、第
２図は昇降軸と浮体の連結部分の斜視図、第３図
は浮体の下面図である。
１……支持枠、２……基台、３……昇降軸、４
……浮体、７……ナツト、８，９……スラスト軸
受、１０……発電機、１２……浮体本体、１５…
…回転支軸、１６……ブラケツト、１８……発電
機、２１……ポンプ、２２……ホース、ｌ……水
面。
The drawings show a wave energy conversion device according to an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional side view, Fig. 2 is a perspective view of the connecting part between the lifting shaft and the floating body, and Fig. 3 is the bottom surface of the floating body. It is a diagram. 1...Support frame, 2...Base, 3...Elevating shaft, 4
...Floating body, 7... Nut, 8, 9... Thrust bearing, 10... Generator, 12... Floating body main body, 15...
... Rotation shaft, 16 ... Bracket, 18 ... Generator, 21 ... Pump, 22 ... Hose, l ... Water surface.
Claims (1)
に、該ナツトにボールねじ機構を介して昇降軸を
挿通して設け、上記昇降軸の下端に回転支軸を介
して、４方に板状の補強リブが取付けられた浮体
を揺動自在に支持し、上記ナツトの外周に形成さ
れた歯車部および上記回転支軸に取付けられた歯
車に連動連結された発電機又は回転式ポンプを設
けたことを特徴とする波エネルギーの変換装置。1. A nut is rotatably disposed within a support frame, and an elevating shaft is inserted through the nut via a ball screw mechanism, and a plate-shaped A floating body to which reinforcing ribs are attached is swingably supported, and a generator or rotary pump is provided which is interlocked and connected to a gear part formed on the outer periphery of the nut and a gear attached to the rotational support shaft. A wave energy conversion device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2090980A JPS56118568A (en) | 1980-02-20 | 1980-02-20 | Method of converting wave energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2090980A JPS56118568A (en) | 1980-02-20 | 1980-02-20 | Method of converting wave energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56118568A JPS56118568A (en) | 1981-09-17 |
| JPS636748B2 true JPS636748B2 (en) | 1988-02-12 |
Family
ID=12040346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2090980A Granted JPS56118568A (en) | 1980-02-20 | 1980-02-20 | Method of converting wave energy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56118568A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917282U (en) * | 1982-07-23 | 1984-02-02 | 日立造船株式会社 | Pendulum plate for wave energy absorption |
| JP4810662B2 (en) * | 2006-05-25 | 2011-11-09 | 国立大学法人神戸大学 | Wave power generation system and wave power generation plant |
| US10273930B2 (en) * | 2016-11-09 | 2019-04-30 | Ocean Power Technologies, Inc. | Power take off system for wave energy converter buoy |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149599U (en) * | 1975-05-23 | 1976-11-30 | ||
| FR2378958A1 (en) * | 1976-11-20 | 1978-08-25 | Hook Clyde | Power generator utilising waves and tides - has asymmetric float guided vertically in frame and rocking about its axis to drive piston pump which delivers water to accumulator |
-
1980
- 1980-02-20 JP JP2090980A patent/JPS56118568A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56118568A (en) | 1981-09-17 |
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