【０００１】
【発明の属する技術分野】
本発明は、波浪のエネルギーを利用して発電を行う波力発電方法および波力発電装置に関し、詳しくは、海底に固定された構築物の一部をなす波浪を受ける部位で海上から海中に跨る範囲にある傾斜面部位において波力により傾斜面部位上を一定方向の往復運動をする浮体部位と発電機を具備した移動体の往復運動から発電機と連動する歯車機構を用いて回転エネルギーとして取り出し発電する波力発電方法および波力発電装置に関する。
【０００２】
【従来の技術】
波力発電は自然エネルギーを利用する発電方法の注目される一つである。該発電に関しては多くの提案が既になされていて、例えば、波力を空気流または水流エネルギーに変換しタービン翼を回転させて発電する方法やポンプ機構等を利用して波力を水圧や油圧エネルギーに変換させローター等を回転させて発電する方法等の波浪エネルギーを流体または機械的エネルギーに一次変換し該エネルギーを発電機に伝達し発電する二段階のエネルギー変換方法が多く用いられている。ところが、前述の方法での波力の空気流、水圧等への変換およびタービン、ローター等の回転力への変換による発電効率は低い。
【０００３】
また、水面に鉛直をなす様な壁体の近傍では壁面への波浪のぶつかりにより乱流および波力の減衰の恐れがあり、水深の深い場所での波力を利用する発電では発電設備本体を海底から強固に固定することは困難であり浮体構造物としてアンカーとワイヤー等による係留では該浮体構造物自体が波力の吸収体となり目的の発電のために利用出来る波力が小さくなるという課題点がある。そして、波力発電を実用化するためには、対象となる波浪の波高や波周期と潮位や潮流等の時間的な変化および強風時の異常波浪の発生等における課題点を解決するとともに発電設備としての建設、運転、送電、保全コスト等も含めた経済性の課題点も解決しなければならない。この様なことから、波力を電気エネルギーに変換するための効率的なエネルギーの吸収装置や波力発電に関する多くの提案が実用化の段階に至っていないのが実状である。
【０００４】
しかし、温暖化等による地球環境の悪化は深刻化しその改善対策は喫緊の課題となりつつあり、生活および経済活動に不可欠な電気の発電方法においても化石燃料を燃焼し環境破壊の問題を内在する火力発電や安全性に課題のある原子力発電に代わる地球環境に優しい発電方法の提案が望まれている。
【０００５】
【発明が解決しようとする課題】
本発明は、前述の従来技術に鑑みてなされたもので、波力発電において、水面に鉛直をなす様な壁体の近傍での壁面への波浪のぶつかりにより乱流および波力の減衰の恐れが低減出来るとともに潮位や潮流の変化や強風時の異常波浪にも容易に対応出来て、波力を空気流や水圧等に一次変換してタービン等を回転させて発電する様な波力の電気エネルギー変換効率の低い発電方法を用いることなく波力を電気エネルギーに効率的に変換することが期待出来るとともに建設、運転、保全等に関しても比較的容易な地球環境に優しい波力発電方法および波力発電装置の提供を目的とする。
【０００６】
【課題を解決するための手段】
前記の目的を達成するため、本発明の波力発電方法は、海底に固定された構築物の一部をなす波浪を受ける部位で高さ方向において海上から海中に跨る範囲にある傾斜面部位と、該傾斜面部位上を移動方向がガイド機構により一定方向に制御され波力により往復運動をする浮体部位と発電機を具備した移動体、及び、前記傾斜面部位に敷設された竿歯状部位とこれに嵌合する歯車を含む移動体に付設された複数の歯車部位からなり前記発電機と連動する歯車機構を用いて、波力を前記移動体の往復運動から前記歯車機構により回転エネルギーとして取り出し前記発電機に伝達して発電することを特徴とする。
【０００７】
付加して、前記歯車機構における前記移動体の往復運動に伴う行きと帰りでの逆回転現象がそのまま発電機に伝達されることを回避するために前記歯車機構に一方向の回転力のみを伝達するクラッチ機構を組み入れて発電機の回転軸の回転方向を一方向に制御して発電することを特徴とする。
【０００８】
本発明の波力発電装置は、主要部が、海底に固定された構築物の一部をなす波浪を受ける部位で高さ方向において海上から海中に跨る範囲にある傾斜面部位と、該傾斜面部位上を移動方向がガイド機構により一定方向に制御され波力により往復運動をする浮体部位と発電機を具備した移動体、及び、前記傾斜面部位に敷設された竿歯状部位とこれに嵌合する歯車を含む前記移動体に付設された複数の歯車部位からなる前記発電機と連動する歯車機構とからなり、波力を前記移動体の往復運動から前記歯車機構により回転エネルギーとして取り出し前記発電機に伝達して発電することが出来る様にしたことを特徴とする。
【０００９】
付加して、前記歯車機構における前記移動体の往復運動に伴う行きと帰りでの逆回転現象がそのまま発電機に伝達されることを回避するために前記歯車機構に一方向の回転力のみを伝達するクラッチ機構を組み入れて発電機の回転軸の回転方向を一方向に制御することを特徴とする。
【００１０】
更には、前記移動体の移動方向を制御するためのガイド機構として前記傾斜面部位上の前記移動体の両側部近傍に長尺状のガイド部材を平行状態に固設するとともに前記ガイド部材に接し摺動または回転出来る摺動部位を前記移動体の側辺部に設けて前記移動体の横方向の移動および浮き上がりを制限出来る様にしたことを特徴とする。
【００１１】
上記の手段を講じることにより、例えば、波浪を受ける部位を傾斜させて波浪のぶつかりによる乱流および波力の減衰の恐れを低減するとともに前記傾斜面部位の高さ方向で海上部と海中部の寸法を十分確保することにより干満の潮位等の変化への対応の容易化を図り、前記傾斜面部位上を移動方向がガイド機構により一定方向に制御され波力により往復運動をする移動体を配設して、波力を移動体の往復運動から歯車機構により回転エネルギーとして発電機に伝達することにより電気エネルギーへの変換効率の改善を図る。また、単なる歯車の連結の歯車機構を用いると移動体の往復運動に伴う逆回転現象が発電機に伝達されるのでこの場合には逆回転現象に対応出来る特殊なスイッチ機構等を発電機側に組み込み対応するが、前記対応策に代えて歯車機構に一方向の回転のみに制御出来るクラッチ機構を組み入れて前記逆回転現象の発電機への伝達を回避して発電の容易化を図る。そして、前記傾斜面部位の上方に水平面部位を設けることにより前記移動体を引き上げて係留または搬送出来る様にして台風等の強風時の異常波浪への対応および設備保全等の容易化を図る。
【００１２】
【発明の実施の形態】
本発明の波力発電方法および波力発電装置の実施の形態を以下に図面を参照して説明する。図１は本発明の波力発電装置を説明する模式的側面図かつ断面図、図２は本発電装置の一例を示す部分正面図かつ断面図、図３は図２の例の部分平面図、図４と図５は図２の例の部分側面図かつ断面図、図６は本発電装置の構造体を杭で海底に固定する場合および発電機からの送電方法を説明する模式的側面図かつ断面図である。
【００１３】
本発明の波力発電方法および波力発電装置は、図１〜５に示す様に、主要部が、海底に固定された構築物１の一部をなす波浪を受ける部位で海上から海中に跨る範囲にある傾斜面部位１ａと、傾斜面部位１ａ上をガイド機構４により横方向の移動および浮き上がりを制限され移動方向が制御され波力により往復運動をする浮体部位２ａと発電機２ｂを具備した移動体２と、傾斜面部位１ａに敷設された竿歯状部位３ａとこれに嵌合する歯車を含む移動体２に付設された複数の歯車部位３ｂからなり発電機２ｂと連動する歯車機構３とからなる。
【００１４】
付加して、歯車機構３には一方向の回転力のみを伝達するクラッチ機構を組み入れて発電機２ｂの回転軸の回転方向を一方向に制御する。更に、移動体２の往復運動を容易にするために傾斜面部位１ａ表面と移動体２の下部の少なくとも一方に摩擦抵抗値の小さい移動体摺動用部材５を付設する。更には、傾斜面部位１ａの上方に水平面部位１ｂを設けて移動体２を引き上げて係留または搬送出来る様にする。更には、図６に示す様に、傾斜面部位１ａに設置した複数の架線用支柱６ａと支柱６ａに張り渡した懸架用綱６ｂと綱６ｂに位置移動可能な状態に懸架した電線６ｃ及び移動体２に設置した移動体側支柱６ｄとからなる送電機構６を用いて移動体２の往復運動を阻害しないで発電した電気を送電出来る様にする。なお、移動体２は傾斜面部位１ａに間隔をおいて横並び状態に設置することが出来る。その場合には、上記に説明した部位や機構等は各々の移動体２にセットとして設けられる。以下に、主な部位や機構等に関し付加して特記すべき詳細について説明する。
【００１５】
海底に固定された構築物１は、図１に示す様な防波堤に類したコンクリート構造体が主体で自重により海底に固定される形態のものや、図６に示す様なシーバースに類した鋼管杭等１ｃにより海底に固定される形態のものが用いられる。そして、規模および形状等の仕様は設置場所の波浪条件や干満の潮位等と要求される発電規模とから傾斜面部位１ａと移動体２等と連関して適宜設定される。また、設置場所としては経済性等も勘案して約３〜２０ｍ程度の水深の場所に設置されることが好ましい。なお、既存の防波堤等も強度や波浪及び水深等の条件が本発明の目的を達成するための条件に適合する場合には傾斜面部位１ａを付設することにより本発明の構築物として利用することも出来る。
【００１６】
傾斜面部位１ａは、主要部が厚板状のコンクリート構造体またはこれに準ずる金属板等を組み入れた構造体からなり、傾斜角度は約３０〜６０度の範囲を目処として設定される。そして、該部位１ａには、歯車機構３の竿歯状部位３ａが固設されるとともにガイド機構４のガイド支柱４ｃ及び移動体２の往復運動を容易にするための移動体摺動用部材５並びに架線用支柱６が場合により固設される。また、上記の凹部および支柱等が固設される部分以外の表面は平滑であることが好ましい。そして、水平面部位１ｂは、主要部が傾斜面部位１ａに準じた厚板状のコンクリート構造体からなっている。
【００１７】
移動体２は、主要部が浮体部位２ａと発電機２ｂ及び支持架台２ｃとからなり、歯車機構３の歯車３ｂ及びガイド機構４の摺動部位４ｂが付設され、図６に示す様に、送電機構６の移動体側支柱６ｄが付設されることもある。また、該移動体２は全体として比重が約０．４〜０．８程度の範囲になる様に構成される。そして、浮体部位２ａは内部に気体を密封することにより浮力が確保される構造をなし外殻は容易に破損及び劣化せずに前記構造を維持して目的を達成出来る材質のものが用いられる。なお、気体に代えて独立気泡の樹脂発泡体を用いることも出来る。また、該部位２ａは浮力を調整出来る様にすることも好ましい。そして、発電機２ｂは、回転軸を回転して発電する方式のもので防水機能を有しているものが用いられが、発電機の構造や機種等は本発明の目的を達成出来うる限りにおいて限定はされない。また、支持架台２ｃは、浮体部位２ａと発電機２ｂ及び歯車３ｂの仕様と連関して部材と構造を含めた仕様が適宜設定される。
【００１８】
歯車機構３は、大型機器に用いられる竿歯及び歯車に準じたものが用いられ材質としては腐食し難いものが好ましい。そして、竿歯状部位３ａは通称ラックと称される形態のもので傾斜面部位１ａの筋状の凹部又は表面に固設される。また、複数の歯車３ｂは平歯車、はすば歯車、笠歯車等の種類の歯車を適宜用いることが出来る。そして、該歯車３ｂは竿歯状部位３ａ側を大きくし発電機２ｂ側を小さくすることが発電機２ｂの回転数を高めるために好ましい。また、歯車機構３に組み入れる一方向の回転力のみを伝達するクラッチ機構には例えば歯車部位にラチェット構造を組み入れたものまたはベアリング等を用いたワンウエークラッチと称されるものが用いられるが本発明の目的を達成出来るクラッチ機構である限りにおいて限定はされない。そして、前記クラッチ機構を組み入れた歯車機構４の用い方の一例としては、図３〜５に示す様に、クラッチ機構を組み込み歯車数を調整して制御する回転方向を異ならせた二つの歯車機構３を発電機２ｂの回転軸の両端部に組み付ける方法があるが、この一例に限定はされない。
【００１９】
ガイド機構４は、傾斜面部位１ａ上の移動体２の両側部近傍に平行状態に固設された長尺状のガイド部材４ａと該部材４ａに接し摺動または回転出来る移動体２の側辺部に設けられた摺動部位４ｂ及び部材４ａを傾斜面部位１ａに固設するガイド支柱４ｃとからなり、移動体の横方向の移動および浮き上がりを制限して一方向の往復運動に制御する。そして、長尺状のガイド部材４ａは例えば断面がＬ字形状もしくはコの字形状で材質が鉄等の金属またはこれに準ずる強度および耐久性を有するものが用いられる。また、摺動部位４ｂは摺動による場合には少なくとも表面部に摩擦抵抗値の小さい材質のものが用いられ回転による場合にはローラーが付設され、摩擦抵抗値の小さい材質例としては、高分子ポリエチレン、ポリアミド、ポリイミド、ポリエーテルエーテルケトン等の硬質樹脂が好ましいが本発明の目的を達成出来る限り前記例に限定されない。そして、傾斜面部位１ａに筋状の凹部を設けて移動体２の支持架台２ｃの下部に副ガイド部材４ｄを追加して付設し横方向の制御を確実にすることも好ましい。
【００２０】
移動体摺動用部材５は、傾斜面部位１ａの表面および移動体２の下部の少なくとも一方に筋状に複数列固設される。また、配設される部材の形状および配設数等の設定は移動体２の条件等を勘案し適宜設定される。そして、該部材５の材質例としては、高分子ポリエチレン、ポリアミド、ポリイミド、ポリエーテルエーテルケトン等の硬質樹脂が好ましいが、本発明の目的を達成出来る限り前記例に限定されない。
【００２１】
送電機構６は、図６に示す様に、例えば、架線用支柱６ａを移動体２の最大移動範囲に対応出来る様に傾斜面部位１ａに設置して懸架用綱６ｂを張設し、多数のリング状部材を綱６ｂに貫通状態で付設し絶縁被覆された電線６ｃを前記リング状部材に一定のピッチで留め付けて電線６ｃを位置移動可能な状態に懸架し、移動体側支柱６ｄの上端部にもリング状態部位を設けて前記電線用リング状部材の最下端の下方で支柱６ｄのリング状態部位に懸架用綱６ｂを貫通させる様に配設して移動体側支柱６ｄの移動と電線６ｃの自重による落下を利用して電線６ｃを伸縮させて移動体２の往復運動を阻害しないで送電出来る様にする。そして、該機構６は海水による漏電や耐候劣化等による送電の障害を回避出来る部材構成をなしている。
【００２２】
【発明の効果】
本発明によれば、波力発電において、波力を電気エネルギーに効率的に変換することが期待出来て潮位や潮流の変化や強風時の異常波浪にも容易に対応出来るとともに建設、運転、保全等に関しても比較的容易な波力発電方法および波力発電装置が提供出来る様になるので、地球環境の悪化が深刻化し改善対策が急がれる現況下で、生活および経済活動に不可欠な電力の発電において化石燃料を燃焼し環境破壊の問題を内在する火力発電や安全性に課題のある原子力発電に代わり地球規模で見ると膨大な潜在エネルギーを有する波力を利用して地球環境に優しい発電をすることに貢献出来る。
【図面の簡単な説明】
【図１】本発明の波力発電装置を説明する模式的側面図かつ断面図
【図２】本発電装置の一例を示す部分正面図かつ断面図
【図３】図２の例の部分平面図
【図４】図２の例の一方向の部分側面図かつ断面図
【図５】図２の例の他方向の部分側面図かつ断面図
【図６】本発電装置の構造体を杭で海底に固定する場合および発電機からの送電方法を示す模式的側面図兼断面図である。
【符号の説明】
１ ；海底に固定された構築物
１ａ；構築物の一部をなす傾斜面部位
１ｂ；構築物の一部をなす水平面部位
１ｃ；構築物の海底に固定する鋼管杭等
２ ；移動体
２ａ；浮体部位
２ｂ；発電機
２ｃ；支持架台
３ ；歯車機構
３ａ；竿歯状部位
３ｂ；歯車部位
４ ；ガイド機構
４ａ；長尺状のガイド部材
４ｂ；摺動部位
４ｃ：ガイド支柱
４ｄ；副ガイド部材
５ ；移動体摺動用部材
６ ；送電機構
６ａ；架線用支柱
６ｂ；懸架用綱
６ｃ；電線
６ｄ；移動体側支柱
７ ；波浪
８ ；海底地盤[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wave power generation method and a wave power generation device that generate electric power by using the energy of waves, and more particularly, to a region that extends from the sea to the sea at a portion that receives waves forming a part of a structure fixed to the sea floor. Power is extracted from the reciprocating motion of a floating body and a moving body equipped with a generator by using a gear mechanism that works with the generator from the reciprocating motion of a floating body that reciprocates in a fixed direction on the inclined surface by wave force The present invention relates to a wave power generation method and a wave power generation device.
[0002]
[Prior art]
Wave power generation is one of the remarkable power generation methods using natural energy. Many proposals have already been made regarding the power generation, for example, a method of converting wave power into air or water flow energy to rotate turbine blades to generate power, or using a pump mechanism or the like to convert wave power to hydraulic or hydraulic energy. A two-stage energy conversion method of converting wave energy into fluid or mechanical energy, and transmitting the energy to a generator to generate electric power, such as a method of generating electric power by rotating a rotor or the like, etc., is often used. However, the power generation efficiency due to the conversion of the wave power into the airflow, the water pressure, and the like and the rotation power of the turbine, the rotor, and the like by the above-described method is low.
[0003]
In addition, near a wall that is vertical to the water surface, there is a risk of turbulence and attenuation of wave power due to the collision of waves on the wall, and the power generation equipment main body is used for power generation using wave power in deep water. It is difficult to fix it firmly from the sea floor, and when moored with anchors and wires as a floating structure, the floating structure itself becomes an absorber of wave power and the wave power that can be used for the intended power generation decreases. There is. In order to put wave power generation into practical use, it is necessary to solve the problems of the temporal change of the wave height and wave period of the target wave, the tide level and the tide, the occurrence of abnormal waves in strong winds, etc. Economic issues, including construction, operation, power transmission, and maintenance costs, must also be resolved. For these reasons, many proposals regarding an efficient energy absorbing device for converting wave power into electric energy and wave power generation have not reached the stage of practical use.
[0004]
However, the deterioration of the global environment due to global warming, etc. has become serious, and measures to remedy this are becoming an urgent issue.The thermal power generation method that burns fossil fuels and has the problem of environmental destruction even in power generation methods indispensable for living and economic activities There is a need for a proposal for a power generation method that is environmentally friendly and replaces nuclear power generation, which has problems in power generation and safety.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described related art, and in wave power generation, turbulence and wave power may be attenuated due to collision of waves on a wall near a wall that is vertical to the water surface. And can easily respond to changes in tide level and tidal currents and abnormal waves during strong winds. It can be expected to efficiently convert wave power into electric energy without using a power generation method with low energy conversion efficiency, and it is relatively easy to construct, operate, and maintain, etc. The purpose is to provide a power generator.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the wave power generation method of the present invention is an inclined surface portion in a range extending from the sea to the sea in the height direction at a portion receiving waves forming a part of a structure fixed to the sea floor, A moving body having a floating body part and a generator, the moving direction of which is controlled in a fixed direction by a guide mechanism on the inclined surface part and reciprocating by wave force, and a rod-like part laid on the inclined surface part; Using a gear mechanism consisting of a plurality of gear parts attached to a moving body including gears fitted thereto and interlocking with the generator, wave force is extracted from the reciprocating motion of the moving body as rotational energy by the gear mechanism. The power is transmitted to the generator to generate power.
[0007]
In addition, in order to avoid that the reverse rotation phenomenon at the time of return and return due to the reciprocating motion of the moving body in the gear mechanism is transmitted to the generator as it is, only the rotational force in one direction is transmitted to the gear mechanism. In this case, a clutch mechanism is incorporated to control the rotation direction of the rotating shaft of the generator in one direction to generate power.
[0008]
The wave power generation device according to the present invention is characterized in that a main part is a part receiving waves forming a part of a structure fixed to the sea floor, a slope part in a range extending from the sea to the sea in the height direction, and the slope part. A moving body equipped with a floating body part and a generator, the moving direction of which is controlled in a fixed direction by a guide mechanism and reciprocates by wave force, and a rod-like part laid on the inclined surface part and fitted thereto. And a gear mechanism interlocked with the generator, comprising a plurality of gear parts attached to the moving body including a gear to be driven. The generator extracts the wave force from the reciprocating motion of the moving body as rotational energy by the gear mechanism. To be able to generate electricity.
[0009]
In addition, in order to avoid that the reverse rotation phenomenon at the time of return and return due to the reciprocating motion of the moving body in the gear mechanism is transmitted to the generator as it is, only the rotational force in one direction is transmitted to the gear mechanism. The rotation direction of the rotating shaft of the generator is controlled in one direction by incorporating a clutch mechanism.
[0010]
Further, as a guide mechanism for controlling the moving direction of the moving body, an elongated guide member is fixed in parallel in the vicinity of both sides of the moving body on the inclined surface portion and is in contact with the guide member. A sliding portion capable of sliding or rotating is provided on a side portion of the moving body so that the moving body can be restricted from moving laterally and floating.
[0011]
By taking the above-described means, for example, the portion receiving the waves is inclined to reduce the possibility of turbulence and the attenuation of the wave force due to the collision of the waves, and at the height of the inclined surface portion above the sea and undersea. By ensuring sufficient dimensions, it is easy to respond to changes in the ebb and flow of the ebb and flow, etc., and a moving body that reciprocates by wave force, with the moving direction being controlled in a fixed direction on the inclined surface by a guide mechanism, is arranged. By transmitting the wave force from the reciprocating motion of the moving body to the generator as rotational energy by the gear mechanism, the conversion efficiency into electric energy is improved. In addition, if a gear mechanism that simply connects gears is used, the reverse rotation phenomenon associated with the reciprocating motion of the moving body is transmitted to the generator. In this case, a special switch mechanism that can cope with the reverse rotation phenomenon is provided on the generator side. As a countermeasure, the gear mechanism may be replaced with a clutch mechanism capable of controlling rotation in only one direction to avoid transmission of the reverse rotation phenomenon to the generator to facilitate power generation. By providing a horizontal surface portion above the inclined surface portion, the movable body can be lifted up and moored or transported, so that it is possible to cope with abnormal waves during a strong wind such as a typhoon and to facilitate facility maintenance and the like.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a wave power generation method and a wave power generation device of the present invention will be described below with reference to the drawings. 1 is a schematic side view and a cross-sectional view illustrating a wave power generation device of the present invention, FIG. 2 is a partial front view and a cross-sectional view illustrating an example of the power generation device, FIG. 3 is a partial plan view of the example of FIG. 4 and 5 are partial side views and cross-sectional views of the example of FIG. 2, and FIG. 6 is a schematic side view illustrating a case where the structure of the power generation device is fixed to the seabed with a pile and a method of transmitting power from the power generator. It is sectional drawing.
[0013]
As shown in FIGS. 1 to 5, the wave power generation method and the wave power generation device of the present invention have a main part in a region that receives waves forming a part of the building 1 fixed to the sea floor and extends from the sea to the sea. And a movable body 2a and a generator 2b which are reciprocated by wave force with the lateral movement and uplift being restricted by the guide mechanism 4 on the inclined surface part 1a and the movement direction being controlled by the guide mechanism 4. A gear mechanism 3 including a body 2, a plurality of gear parts 3b attached to a moving body 2 including a rod-like part 3a laid on the inclined surface part 1a and gears fitted thereto, and interlocked with a generator 2b; Consists of
[0014]
In addition, the gear mechanism 3 incorporates a clutch mechanism that transmits only one-way rotational force to control the rotation direction of the rotating shaft of the generator 2b in one direction. Further, in order to facilitate the reciprocating motion of the moving body 2, a moving body sliding member 5 having a small frictional resistance is provided on at least one of the surface of the inclined surface portion 1a and the lower part of the moving body 2. Further, a horizontal surface portion 1b is provided above the inclined surface portion 1a so that the moving body 2 can be pulled up and moored or transported. Further, as shown in FIG. 6, a plurality of overhead wire supports 6a installed on the inclined surface portion 1a, a suspension rope 6b stretched over the support 6a, and the electric wire 6c suspended in a state where it can be moved on the rope 6b and the movement The power generated by the power transmission mechanism 6 including the movable body-side support 6 d installed on the body 2 without disturbing the reciprocating motion of the movable body 2 can be transmitted. Note that the moving bodies 2 can be installed side by side at intervals on the inclined surface portion 1a. In that case, the above-described parts, mechanisms, and the like are provided as a set in each moving body 2. In the following, details of the main parts, mechanisms, and the like that should be additionally noted are described.
[0015]
The structure 1 fixed to the sea floor is mainly composed of a concrete structure similar to a breakwater as shown in FIG. 1 and fixed to the sea floor by its own weight, a steel pipe pile similar to a sea berth as shown in FIG. 6, and the like. The one fixed to the sea floor by 1c is used. The specifications such as the scale and the shape are appropriately set in association with the slope portion 1a and the moving body 2 from the wave conditions at the installation location, the tide level of the ebb and flow, and the required power generation scale. In addition, it is preferable that the location is set at a depth of about 3 to 20 m in consideration of economy and the like. In addition, existing breakwaters and the like can also be used as the structure of the present invention by providing the inclined surface portion 1a when conditions such as strength, waves, and water depth meet the conditions for achieving the object of the present invention. I can do it.
[0016]
The inclined surface portion 1a is made of a concrete structure whose main part is a thick plate-like concrete structure or a structure incorporating a metal plate or the like, and the inclination angle is set in a range of about 30 to 60 degrees. A rod-like portion 3a of the gear mechanism 3 is fixed to the portion 1a, and a moving body sliding member 5 for facilitating reciprocating movement of the guide column 4c of the guide mechanism 4 and the moving body 2; An overhead wire support 6 is optionally fixed. Further, it is preferable that the surface other than the portion where the above-described concave portion, the support, and the like are fixed is smooth. The horizontal surface portion 1b is made of a thick plate-like concrete structure whose main part conforms to the inclined surface portion 1a.
[0017]
The main body of the moving body 2 is composed of a floating body portion 2a, a generator 2b, and a support base 2c, and a gear 3b of a gear mechanism 3 and a sliding portion 4b of a guide mechanism 4 are additionally provided. As shown in FIG. The moving body-side support 6d of the mechanism 6 may be additionally provided. Further, the moving body 2 is configured such that the specific gravity is in a range of about 0.4 to 0.8 as a whole. The floating body portion 2a has a structure in which buoyancy is secured by sealing gas inside, and the outer shell is made of a material capable of maintaining the above structure without being easily damaged or deteriorated and achieving the object. In addition, a closed cell resin foam may be used instead of the gas. It is also preferable that the portion 2a can adjust the buoyancy. The generator 2b generates electricity by rotating a rotating shaft and has a waterproof function. However, as long as the structure and model of the generator can achieve the object of the present invention, There is no limitation. The specifications of the support base 2c including members and structures are appropriately set in association with the specifications of the floating body portion 2a, the generator 2b, and the gear 3b.
[0018]
The gear mechanism 3 is similar to a rod tooth and a gear used for a large-sized device, and is preferably made of a material that does not easily corrode. The rod-like portion 3a has a form commonly called a rack, and is fixed to the streak-shaped concave portion or the surface of the inclined surface portion 1a. Further, as the plurality of gears 3b, spur gears, helical gears, bevel gears, and other types of gears can be used as appropriate. It is preferable that the gear 3b be larger on the side of the rod-like portion 3a and smaller on the side of the generator 2b in order to increase the rotation speed of the generator 2b. Further, as the clutch mechanism for transmitting only one-way rotational force incorporated in the gear mechanism 3, for example, a mechanism incorporating a ratchet structure in a gear portion or a one-way clutch using a bearing or the like is used. There is no limitation as long as the clutch mechanism can achieve the purpose. As an example of the use of the gear mechanism 4 incorporating the clutch mechanism, as shown in FIGS. 3 to 5, two gear mechanisms having different rotation directions for controlling the number of gears by controlling the number of gears by incorporating the clutch mechanism. Although there is a method of assembling the three at both ends of the rotating shaft of the generator 2b, the present invention is not limited to this example.
[0019]
The guide mechanism 4 includes an elongated guide member 4a fixed in a parallel state near both sides of the moving body 2 on the inclined surface portion 1a, and a side of the moving body 2 which can slide or rotate in contact with the member 4a. It comprises a sliding portion 4b provided in the portion and a guide column 4c for fixing the member 4a to the inclined surface portion 1a, and controls the movement of the moving body in the lateral direction and the lifting of the moving body so as to reciprocate in one direction. The long guide member 4a is made of, for example, a metal such as iron having a cross section of an L-shape or a U-shape, or a material having a strength and durability equivalent thereto. The sliding portion 4b is made of a material having a small frictional resistance at least on the surface when sliding, and is provided with a roller when rotating, and a material having a small frictional resistance is, for example, a polymer. Hard resins such as polyethylene, polyamide, polyimide, and polyetheretherketone are preferable, but are not limited to the above examples as long as the object of the present invention can be achieved. It is also preferable to provide a streak-shaped concave portion in the inclined surface portion 1a and additionally provide a sub-guide member 4d below the support base 2c of the moving body 2 to ensure lateral control.
[0020]
The plurality of moving body sliding members 5 are fixedly arranged in a plurality of lines on at least one of the surface of the inclined surface portion 1a and the lower part of the moving body 2. Further, the settings of the shape of the members to be provided, the number of the members to be provided, and the like are appropriately set in consideration of the conditions of the moving body 2 and the like. As a material example of the member 5, a hard resin such as high-molecular polyethylene, polyamide, polyimide, and polyetheretherketone is preferable, but is not limited to the above example as long as the object of the present invention can be achieved.
[0021]
As shown in FIG. 6, for example, the power transmission mechanism 6 installs an overhead wire support 6 a on an inclined surface portion 1 a so as to correspond to the maximum movement range of the moving body 2 and stretches a suspension rope 6 b, and A ring-shaped member is attached to the rope 6b in a penetrating state, and the insulated wire 6c is fastened to the ring-shaped member at a constant pitch to suspend the wire 6c in a movable state. Also, a ring-shaped portion is provided, and the suspension rope 6b is arranged to penetrate the ring-shaped portion of the support post 6d below the lowermost end of the electric wire ring-shaped member so that the moving body-side support 6d moves and the electric wire 6c is moved. The electric wire 6c is expanded and contracted by utilizing the drop due to its own weight, so that the electric power can be transmitted without obstructing the reciprocating movement of the moving body 2. The mechanism 6 has a member configuration capable of avoiding a power transmission failure due to seawater leakage, weather resistance deterioration, and the like due to seawater.
[0022]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, in wave power generation, it can be expected that wave power is efficiently converted into electric energy, and it can easily respond to changes in tide level and tidal current and abnormal waves in strong winds, as well as construction, operation and maintenance. It is possible to provide a relatively easy wave power generation method and wave power generation device, etc. under the current situation where the deterioration of the global environment is serious and improvement measures are urgent. In place of thermal power generation and nuclear power generation, which have the problem of environmental destruction by burning fossil fuels in power generation, instead of nuclear power generation with safety issues, globally friendly power generation using wave power with enormous potential energy when viewed on a global scale Can contribute to
[Brief description of the drawings]
FIG. 1 is a schematic side view and a cross-sectional view illustrating a wave power generation device of the present invention. FIG. 2 is a partial front view and a cross-sectional view illustrating an example of the power generation device. FIG. 3 is a partial plan view of the example of FIG. 4 is a partial side view and a cross-sectional view in one direction of the example in FIG. 2; FIG. 5 is a partial side view and a cross-sectional view in another direction of the example in FIG. 2; FIG. 4 is a schematic side view and a cross-sectional view showing a case where the power supply is fixed to a power source and a method of transmitting power from a generator.
[Explanation of symbols]
1; a structure 1a fixed to the sea floor; an inclined surface portion 1b forming a part of the structure; a horizontal surface portion 1c forming a part of the structure; a steel pipe pile fixed to the sea bottom of the structure 2; a moving body 2a; a floating body portion 2b; Generator 2c; support base 3; gear mechanism 3a; rod-like portion 3b; gear portion 4; guide mechanism 4a; elongated guide member 4b; sliding portion 4c: guide column 4d; sub-guide member 5; Sliding member 6; power transmission mechanism 6a; overhead wire support 6b; suspension rope 6c; electric wire 6d; moving body side support 7; wave 8;
