JP2007263077A - Marine wind power generating equipment - Google Patents

Marine wind power generating equipment Download PDF

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Publication number
JP2007263077A
JP2007263077A JP2006092136A JP2006092136A JP2007263077A JP 2007263077 A JP2007263077 A JP 2007263077A JP 2006092136 A JP2006092136 A JP 2006092136A JP 2006092136 A JP2006092136 A JP 2006092136A JP 2007263077 A JP2007263077 A JP 2007263077A
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tower
wind power
power generation
floating body
windmill
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Inventor
Kiyokazu Yago
清和 矢後
Yutaka Okawa
豊 大川
Kinji Sekida
欣治 関田
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Tokai University
National Maritime Research Institute
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Tokai University
National Maritime Research Institute
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Priority to JP2006092136A priority Critical patent/JP2007263077A/en
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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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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Abstract

<P>PROBLEM TO BE SOLVED: To provide marine wind power generating equipment facilitating retraction of a windmill during strong wind by vertically movably providing a tower supporting the power generation windmill on a floating body floating on the ocean to lower a major part of the tower into the sea in strong wind. <P>SOLUTION: The equipment is constructed so that the tower 2 is vertically movably provided on the floater 1, and the power generating windmill 5 is mounted on the top of the tower 2, and when strong wind or maintenance, a buoyancy tank 6 at the low end of the tower 2 is filled with water in a state that a posture of blades of the windmill 5 in the case of a two-blade type is made horizontal to immerse the major part of the tower 2 into the water and to lower the blades and receive them with supports on the floater 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、洋上に浮かぶ浮体にタワーを設けて、同タワー上に大規模の風力発電用風車を装着できるようにした洋上風力発電設備に関する。   The present invention relates to an offshore wind power generation facility in which a tower is provided on a floating body floating on the ocean so that a large-scale wind turbine for wind power generation can be mounted on the tower.

従来、浮体上に複数の小型風力発電機を装着して、同浮体の移動および係留により、複雑な海岸地形であっても、また、遠浅でない海底を有する水域でも、容易に設置できるようにした洋上風力発電装置が開発されている。
しかしながら、風車の直径が１２０ｍにも及ぶ大規模な洋上風力発電設備では、同風車を強風時に待避させる際に、同風車を支持するタワー付き浮体を移動させることは容易ではない。
特開２００２−１３０１１３号公報 Conventionally, multiple small wind power generators were installed on the floating body, and the floating body was moved and moored so that it could be installed easily even in complex coastal terrain or in waters with shallow seabeds. Offshore wind power generators have been developed.
However, in a large-scale offshore wind power generation facility with a windmill having a diameter of 120 m, it is not easy to move the floating body with a tower that supports the windmill when the windmill is retracted in a strong wind.
JP 2002-130113 A

本発明は、浮体上において、発電用の風車を支持するタワーを昇降可能に設けることにより、強風時には同タワーの主要部を水中へ降下させて、上記風車の強風時の待避を容易に行えるようにした洋上風力発電設備を提供することを課題とする。   In the present invention, by providing a tower that supports a wind turbine for power generation on a floating body so that the wind turbine can be moved up and down, the main part of the tower can be lowered into water during a strong wind so that the wind turbine can be easily retracted during a strong wind. It is an object to provide an offshore wind power generation facility.

本発明の洋上風力発電設備は、水面に沿って浮かぶ浮体と、同浮体に立設されたタワーと、同タワーの頂部に配設された発電機と、同発電機の入力軸の前端部に装着された風車とを備え、同風車を強風時には上記タワーと共に下降させるべく、上記浮体に上記タワーの昇降を案内しうる案内機構が設けられるとともに、同タワーの昇降駆動手段が設けられたことを特徴としている。   The offshore wind power generation facility of the present invention includes a floating body floating along the water surface, a tower standing on the floating body, a generator disposed on the top of the tower, and a front end portion of the input shaft of the generator. In order to lower the wind turbine together with the tower in a strong wind, a guide mechanism capable of guiding the lifting and lowering of the tower is provided in the floating body, and a lifting drive means for the tower is provided. It is a feature.

また、本発明の洋上風力発電設備は、上記昇降駆動手段が注排水制御可能の浮沈式浮力タンクとして上記タワーの下端に装着され、同浮力タンクの少なくとも下部が没水状態に保たれていることを特徴としている。   Further, in the offshore wind power generation facility of the present invention, the lifting drive means is mounted at the lower end of the tower as a floating and sinking type buoyancy tank capable of pouring and draining control, and at least the lower part of the buoyancy tank is maintained in a submerged state. It is characterized by.

さらに、本発明の洋上風力発電設備は、上記案内機構が、上記浮体に形成された上下貫通型の竪孔の内側に設けられたことを特徴としている。   Furthermore, the offshore wind power generation facility of the present invention is characterized in that the guide mechanism is provided inside a vertically penetrating fistula formed in the floating body.

また、本発明の洋上風力発電設備は、上記タワーが截頭円錐状に形成されるとともに、同タワーの外周を取り囲むように同タワーに装着された上下方向の複数の第１レールを備え、上記案内機構が、上記第１レールに係合して上記タワーの昇降を案内すべくガイドローラーとして設けられたことを特徴としている。   In addition, the offshore wind power generation facility of the present invention includes a plurality of vertical first rails mounted on the tower so as to surround the outer periphery of the tower, and the tower is formed in a truncated cone shape. A guide mechanism is provided as a guide roller to engage with the first rail and guide the raising and lowering of the tower.

さらに、本発明の洋上風力発電設備は、上記第１レールは上記タワーの外周部に多段状に配設された多数の伸縮機構を介し装着されて、上記風車の作動時には上記伸縮機構の収縮作動により上記第１レールが上記タワーの外面に沿い格納されるように構成されていることを特徴としている。   In the offshore wind power generation facility according to the present invention, the first rail is attached to the outer periphery of the tower via a plurality of expansion / contraction mechanisms arranged in multiple stages, and the expansion / contraction mechanism contracts when the windmill operates. The first rail is configured to be stored along the outer surface of the tower.

また、本発明の洋上風力発電設備は、上記浮力タンクの上部が、上記タワーの下降状態から上昇状態への移行の際に上記竪孔に進入すべく、上記ガイドローラーに係合して案内される上下方向の第２レールを備えるとともに、上記浮力ンクの下部が上記浮体の下面へ係合しうるタンク張り出し部を備えていることを特徴としている。   In the offshore wind power generation facility of the present invention, the upper part of the buoyancy tank is guided by being engaged with the guide roller so that the upper part of the buoyancy tank enters the fistula when the tower moves from the lowered state to the raised state. And a tank overhanging portion that can engage with the lower surface of the floating body.

さらに、本発明の洋上風力発電設備は、上記浮体に、上記タワーを固定するためのストッパーが設けられるとともに、上記タワーの下降状態で上記風車のブレードを支持するための支持台が設けられたことを特徴としている。   Further, in the offshore wind power generation facility of the present invention, the floating body is provided with a stopper for fixing the tower, and a support base for supporting the blade of the windmill in the lowered state of the tower. It is characterized by.

本発明の洋上風力発電設備では、水面に沿って浮かぶ浮体に立設されたタワーの頂部の発電機に風車が装着されているが、同タワーは上記浮体に対し案内機構および昇降駆動手段を介して容易に昇降できるように設けられているので、強風時には上記タワーを上記風車と共に降下させることにより、上記風車を上空の強い風から的確に保護することができる。そして、強風が納まった状態では、再び上記タワーを上昇位置に戻すことにより、上記発電用の風車を直ちに使用可能の状態に復帰させることができる。   In the offshore wind power generation facility of the present invention, a windmill is mounted on the generator at the top of the tower standing on a floating body that floats along the water surface. The tower is connected to the floating body via a guide mechanism and a lifting drive means. Since the tower is lowered together with the windmill in a strong wind, the windmill can be accurately protected from a strong wind in the sky. And in the state where the strong wind was settled, the said windmill for electric power generation can be immediately returned to the state which can be used by returning the said tower to a raise position again.

また、上記昇降移動手段が注排水制御可能の浮沈式浮力タンクとして上記タワーの下端に装着され、同浮力タンクの少なくとも下部が没水状態に保たれていると、常時は上記タワーの上昇位置での保持が安定よく行われるとともに、強風時には上記浮力タンクへの注水により上記のタワーおよび風車の下降が容易に行われて、強風からの待避が迅速に行われるほか、上記浮力タンクからの排水により上記のタワーおよび風車の使用状態への復帰も迅速に行われるようになる。   In addition, when the elevating / lowering means is attached to the lower end of the tower as a floating buoyancy tank capable of pouring and draining control, and at least the lower part of the buoyancy tank is kept in a submerged state, it is always in the raised position of the tower. The tower and wind turbine can be easily lowered by pouring water into the buoyancy tank in a strong wind, and the evacuation from the buoyancy tank can be performed quickly. The return of the tower and the wind turbine to the use state can be quickly performed.

さらに、上記浮体に対する上記タワーの案内機構が、上記浮体に形成された上下貫通型の竪孔の内側に設けられていると、同竪孔に挿通された上記タワーの昇降が適切に且つ円滑に行われるようになる。   Furthermore, when the guide mechanism of the tower with respect to the floating body is provided inside a vertically penetrating hole formed in the floating body, the tower inserted through the hole is lifted up and down appropriately and smoothly. To be done.

また、上記タワーが截頭円錐状に形成されて、同タワーの外周を取り囲むように同タワーに装着された上下方向の複数の第１レールが、前記の竪孔内側における案内機構としてのガイドローラーにより案内されるようにして、上記タワーの昇降が行われるように構成されていると、同タワーが截頭円錐形であるにも拘わらず、上記の上下方向の第１レールを介して同タワーの昇降が円滑に行われるようになる。   The tower is formed in a truncated cone shape, and a plurality of vertical first rails mounted on the tower so as to surround the outer periphery of the tower are guide rollers as a guide mechanism inside the fistula. When the tower is lifted and lowered by being guided by the above-mentioned tower, the tower is connected via the first rail in the vertical direction even though the tower has a truncated cone shape. Ascending and descending smoothly.

そして、上記第１レールが、上記タワーの外周部に多段状に配設された多数の伸縮機構を介し装着されていると、上記風車の使用時には上記伸縮機構の収縮作動により上記第１レールを上記タワーの外周に沿わせるように格納して、上記風車の作動時の妨げ（空気抵抗）にならないように配慮することが可能になる。   When the first rail is attached to the outer periphery of the tower via a number of expansion / contraction mechanisms arranged in a multi-stage shape, the first rail is moved by the contraction operation of the expansion / contraction mechanism when the wind turbine is used. It is possible to take care so that the wind turbine is not hindered (air resistance) by storing it along the outer periphery of the tower.

さらに、上記浮力タンクからの排水に伴い上記タワーが下降状態から上昇状態へ移行する際に、上記浮力タンクの上部が、上記竪孔内へ円滑に進入できるように上記ガイドローラーに係合して案内される上下方向の第２レールを備えるとともに、上記浮力タンクの下部が、上記浮体の下面へ係合しうるタンク張り出し部を備えていると、上記浮力タンクの浮力による上記浮体への一体化が的確に行われるようになる。   Further, when the tower shifts from the lowered state to the raised state due to the drainage from the buoyancy tank, the upper part of the buoyancy tank is engaged with the guide roller so that it can smoothly enter the fistula. When the lower part of the buoyancy tank is provided with a tank overhanging portion that can be engaged with the lower surface of the floating body, it is integrated into the floating body by the buoyancy of the buoyancy tank. Will be done accurately.

また、上記浮体に、上記タワーを固定するためのストッパーが設けられるとともに、上記タワーの下降状態で前記風車のブレードを支持するための支持台が設けられていると、上記浮体における上記タワーの起立状態での固定が上記ストッパーにより強固に行われるとともに、強風時に同ストッパーを解放して上記タワーを下降させる際には、上記風車のブレードを上記支持台に受け止めた状態として、上記ストッパーを再び作動させることにより、上記のタワーおよび風車の保持が確実に行われるようになる。   In addition, when the floating body is provided with a stopper for fixing the tower and a support base for supporting the blade of the windmill in the lowered state of the tower, the tower stands up in the floating body. When the wind turbine blade is lowered by releasing the stopper in a strong wind and lowering the tower, the wind turbine blade is received by the support base and the stopper is actuated again. By doing so, the above-described tower and windmill are reliably held.

図１は本発明の一実施例としての洋上風力発電設備の要部を示す側面図、図２は図１のＡ部の構造を示す縦断面図、図３は図１の洋上風力発電設備の強風時における風車降下待避状態を示す正面図である。   1 is a side view showing the main part of an offshore wind power generation facility as an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing the structure of part A of FIG. 1, and FIG. 3 is the offshore wind power generation facility of FIG. It is a front view which shows the windmill fall avoidance state at the time of a strong wind.

図１に示すように、水面Ｗに沿って浮かぶ深さ１０〜２０ｍ程度の浮体１において、截頭円錐状の高さ７０〜８０ｍ程度のタワー２が起立できるように設けられており、同タワー２の頂部におけるナセル３の内部には発電機４が設けられて、同発電機４のほぼ水平な入力軸（回転軸）の前端部には２翼型の半径６０ｍ程度の風車５が装着されている。   As shown in FIG. 1, in a floating body 1 having a depth of about 10 to 20 m that floats along the water surface W, a tower 2 having a frustoconical height of about 70 to 80 m is provided so that the tower 2 can stand. A generator 4 is provided inside the nacelle 3 at the top of 2, and a two-blade wind turbine 5 having a radius of about 60 m is attached to the front end portion of the almost horizontal input shaft (rotary shaft) of the generator 4. ing.

そして、風車５の風力による回転に伴い発電機４で発電された電力は、図示しない送電ラインを介して浮体１におけるバッテリーに蓄電されるか、または図示しない海底ケーブルを介して陸上の変電所などへ送られるようになっている。
なお、ナセル３は、図示しない風向計からの信号に応じて、制御機構および駆動機構を介し風車５が風上に向くように回動調整される。
また、浮体１の固定は複数のアンカーを用いた海底への係留手段により行われるが、陸側から延在する桟橋への係留により行われるようにしてもよい。 And the electric power generated with the generator 4 with the rotation of the windmill 5 by the wind power is stored in the battery in the floating body 1 through a power transmission line (not shown), or a land substation via a submarine cable (not shown). To be sent to.
The nacelle 3 is rotated and adjusted so that the windmill 5 faces upwind via a control mechanism and a drive mechanism in response to a signal from an anemometer (not shown).
Moreover, although the floating body 1 is fixed by the mooring means to the sea bottom using a plurality of anchors, it may be performed by mooring to the pier extending from the land side.

本実施例では、タワー２の下端に、筒状の浮力タンク上部６ａおよびタンク張り出し部６ｆ付き浮力タンク下部６ｂからなる注排水制御可能の浮沈式浮力タンク６が固着されていて、本設備の稼働時におけるタワー２の上昇状態では、タンク張り出し部６ｆは浮体１の下面へ衝撃吸収板６ｅを介して係合できるように形成されている。   In this embodiment, a floating buoyancy tank 6 capable of pouring and draining control composed of a cylindrical buoyancy tank upper portion 6a and a buoyancy tank lower portion 6b with a tank overhanging portion 6f is fixed to the lower end of the tower 2, and the operation of this equipment is performed. In the rising state of the tower 2 at the time, the tank overhanging portion 6f is formed so as to be able to engage with the lower surface of the floating body 1 via the shock absorbing plate 6e.

すなわち、浮体１には上下貫通型の竪孔７が形成されており、常時は図１に示すように浮力タンク上部６ａが竪孔７内に進入しているが、強風時に風車５を下降待避させる際や、風車５およびナセル３内の機器の整備の際には、図３に示すように、浮力タンク６への注水によりタワー２の大部分を浮体１の竪孔７を通じて水面Ｗの下方へ沈降させるように構成されている。   That is, the floating body 1 is formed with a vertically penetrating borehole 7, and the buoyancy tank upper portion 6a normally enters the borehole 7 as shown in FIG. 3 and when maintaining the equipment in the wind turbine 5 and the nacelle 3, as shown in FIG. 3, most of the tower 2 is poured below the water surface W through the hole 7 of the floating body 1 by pouring water into the buoyancy tank 6. It is comprised so that it may settle to.

このため、タワー２の外周を取り囲むように同タワー２に装着された上下方向の複数（本実施例では４本）の第１レール８を案内しうるガイドローラー９が、浮体１の竪孔７の内周部にダンパバネを介して装着されている。そして、ガイドローラー９は、図１に示すごとく、浮力タンク上部６ａが竪孔７内に進入する際にも、同浮力タンク上部６ａに設けられた上下方向の第２レール11を介して同浮力タンク上部６ａを案内できるように構成されている。   For this reason, the guide roller 9 that can guide a plurality of (four in this embodiment) first rails 8 mounted on the tower 2 so as to surround the outer periphery of the tower 2 is the hole 7 of the floating body 1. It is attached to the inner peripheral part of this through a damper spring. As shown in FIG. 1, when the buoyancy tank upper part 6a enters the borehole 7, the guide roller 9 has the same buoyancy via the second rail 11 in the vertical direction provided in the buoyancy tank upper part 6a. It is comprised so that the tank upper part 6a can be guided.

本実施例では、タワー２が截頭円錐状に形成されているため、同タワー２の浮体１上に起立した稼働状態では、上下方向の第１レール８をタワー２の外周面へ引き寄せて添わせることができるように、同第１レール８は、図１に示すごとくレール下端部を浮力タンク上部６ａの上面にピボット８ａを介し枢着されるとともに、図１および図２に示すごとくレール中間部をタワー２の外周部に多段状の伸縮機構としての油圧シリンダ10を介して装着されている。   In the present embodiment, since the tower 2 is formed in a truncated cone shape, the first rail 8 in the vertical direction is drawn to the outer peripheral surface of the tower 2 in an operating state standing on the floating body 1 of the tower 2. As shown in FIG. 1 and FIG. 2, the first rail 8 is pivotally attached to the upper surface of the buoyancy tank upper portion 6a via a pivot 8a as shown in FIG. The part is mounted on the outer peripheral part of the tower 2 via a hydraulic cylinder 10 as a multistage expansion / contraction mechanism.

そして、図２に示すように油圧シリンダ10の基端10ａはタワー２の凹部２ａ内に枢着され、同油圧シリンダ10のロッド先端10ｂはレール８にピボット８ｂを介して枢着されている。このようにして、油圧シリンダ10の収縮作動により各第１レール８はタワー２の外面に沿い格納されるように構成される。
また、第１レール８の形状は、タワー２の外面に引き寄せられた格納状態でも気流を乱さないように、凸弯曲状の外面を具えている。 As shown in FIG. 2, the base end 10a of the hydraulic cylinder 10 is pivotally mounted in the recess 2a of the tower 2, and the rod tip 10b of the hydraulic cylinder 10 is pivotally mounted on the rail 8 via a pivot 8b. In this manner, each first rail 8 is configured to be stored along the outer surface of the tower 2 by the contraction operation of the hydraulic cylinder 10.
Further, the shape of the first rail 8 has a convex and curved outer surface so as not to disturb the airflow even in the retracted state drawn to the outer surface of the tower 2.

さらに、図３に示すごとくタワー２を降下させた状態で同タワー２を浮力タンク６と共に浮体１に固定するための複数の油圧式ストッパー12，12ａが、浮体１に設置されるほか、タワー２の下降状態で風車５のブレードを支持するための支持台13が、浮体１上に装備されている。なお、支持台13は、風車５のブレードの向きに拘わらず同ブレードを支持できるように、複数の支柱13ａで浮体１に支えられたリング状の浮け部13ｂを有するものとして装備されることが望ましい。   Further, as shown in FIG. 3, a plurality of hydraulic stoppers 12 and 12 a for fixing the tower 2 to the floating body 1 together with the buoyancy tank 6 in a state where the tower 2 is lowered are installed on the floating body 1. A support base 13 for supporting the blades of the wind turbine 5 in the lowered state is mounted on the floating body 1. The support base 13 may be equipped with a ring-shaped floating portion 13b supported by the floating body 1 by a plurality of support columns 13a so that the blade can be supported regardless of the blade direction of the windmill 5. desirable.

本実施例の洋上風力発電設備では、水面Ｗに沿って浮かぶ浮体１に立設されたタワー２の頂部の発電機４に風車５が装着されているが、同タワー２は浮体１に対し案内機構としての第１レール８およびガイドローラー９と、昇降駆動手段としての浮沈式浮力タンク６とを介して、容易に昇降できるように設けられているので、強風時にはタワー２を風車５と共に降下させることにより、風車５を上空の強い風から的確に保護することができる。そして、強風が納まった状態では、再びタワー２を上昇位置に戻すことにより、発電用の風車５を直ちに使用可能の状態に復帰させることができる。   In the offshore wind power generation facility of this embodiment, the wind turbine 5 is mounted on the generator 4 at the top of the tower 2 erected on the floating body 1 floating along the water surface W. The tower 2 is guided to the floating body 1. Since the first rail 8 and the guide roller 9 as the mechanism and the ups and downs buoyancy tank 6 as the raising and lowering drive means are provided so as to be easily raised and lowered, the tower 2 is lowered together with the windmill 5 in a strong wind. As a result, the wind turbine 5 can be accurately protected from the strong wind in the sky. And in the state where the strong wind was settled, the windmill 5 for electric power generation can be immediately returned to the state which can be used by returning the tower 2 to a raise position again.

また、上記昇降移動手段が注排水制御可能の浮沈式浮力タンク６としてタワー２の下端に装着され、同浮力タンク６の少なくとも下部６ｂが没水状態に保たれているので、常時はタワー２の上昇位置での保持が安定よく行われるとともに、強風時には浮力タンク６への注水によりタワー２および風車５の下降が容易に行われて、強風からの待避が迅速に行われるほか、浮力タンク６からの排水によりタワー２および風車５の使用状態への復帰も迅速に行われるようになる。   In addition, the lifting / lowering means is mounted on the lower end of the tower 2 as a floating / floating buoyancy tank 6 capable of controlling pouring and drainage, and at least the lower part 6b of the buoyancy tank 6 is kept in a submerged state. In addition to being stably held at the ascending position, the tower 2 and the wind turbine 5 can be easily lowered by pouring water into the buoyancy tank 6 during strong winds, and the buoyancy tank 6 can quickly escape from strong winds. As a result of the drainage, the tower 2 and the wind turbine 5 are quickly returned to use.

さらに、浮体１に対するタワー２の案内機構が、浮体１に形成された上下貫通型の竪孔７の内側に設けられているので、同竪孔７に挿通されたタワー２の昇降が適切に且つ円滑に行われるようになる。   Further, since the guide mechanism of the tower 2 with respect to the floating body 1 is provided inside the vertically penetrating borehole 7 formed in the floating body 1, the tower 2 inserted through the borehole 7 can be appropriately moved up and down. It will be done smoothly.

また、タワー２が截頭円錐状に形成されて、同タワー２の外周を取り囲むように同タワー２に装着された上下方向の複数の第１レール８が、竪孔７の内側における案内機構としてのガイドローラー９により案内されるようにして、タワー２の昇降が行われるように構成されているので、同タワー２が截頭円錐形であるにも拘わらず、上下方向の第１レール８を介して同タワー２の昇降が円滑に行われるようになる。   Moreover, the tower 2 is formed in a truncated cone shape, and a plurality of first rails 8 in the vertical direction mounted on the tower 2 so as to surround the outer periphery of the tower 2 serve as a guide mechanism inside the shaft hole 7. Since the tower 2 is moved up and down by being guided by the guide roller 9, the first rail 8 in the vertical direction is moved in spite of the tower 2 having a truncated cone shape. As a result, the tower 2 can be lifted and lowered smoothly.

そして、第１レール８が、タワー２の外周部に多段状に配設された多数の伸縮機構としての油圧シリンダ10を介し装着されているので、風車５の使用時には油圧シリンダ10の収縮作動により第１レール８をタワー２の外周に沿わせるように格納して、風車５の作動時の妨げ（空気抵抗）にならないように配慮することが可能になる。   Since the first rail 8 is mounted on the outer periphery of the tower 2 via a plurality of hydraulic cylinders 10 as expansion and contraction mechanisms, when the wind turbine 5 is used, the hydraulic cylinders 10 are contracted. By storing the first rail 8 along the outer periphery of the tower 2, it is possible to consider so as not to obstruct (air resistance) when the wind turbine 5 is operated.

さらに、浮力タンク６からの排水に伴いタワー２が下降状態から上昇状態へ移行する際に、浮力タンク６のタンク上部６ａが、竪孔７内へ円滑に進入できるようにガイドローラー９に係合して案内される上下方向の第２レール11を備えるとともに、浮力タンク６の下部が、浮体１の下面へ係合しうるタンク張り出し部６ｆを備えているので、浮力タンク６の浮力による浮体１への一体化が的確に行われるようになる。   Furthermore, when the tower 2 shifts from the lowered state to the raised state due to drainage from the buoyancy tank 6, the tank upper portion 6 a of the buoyancy tank 6 is engaged with the guide roller 9 so that it can smoothly enter the borehole 7. The lower body of the buoyancy tank 6 is provided with a tank overhanging portion 6f that can be engaged with the lower surface of the floating body 1, so that the floating body 1 due to the buoyancy of the buoyancy tank 6 is provided. Integration into the system will be performed accurately.

また、浮体１に、タワー２を固定するためのストッパー12，12ａが設けられるとともに、タワー２の下降状態で風車５のブレードを支持するための支持台13が設けられているので、浮体１におけるタワー２の起立状態での固定がストッパー12，12ａにより強固に行われるとともに、強風時に同ストッパー12，12ａを解放してタワー２を下降させる際には、風車５のブレードを２ブレード型では水平にしてから支持台13に受け止めた状態として、ストッパー12，12ａを再び作動させることにより、タワー２および風車５の保持が確実に行われるようになる。   In addition, the floating body 1 is provided with stoppers 12 and 12a for fixing the tower 2 and a support base 13 for supporting the blades of the windmill 5 when the tower 2 is lowered. The tower 2 is fixed firmly in the standing state by the stoppers 12 and 12a, and when the tower 2 is lowered by releasing the stoppers 12 and 12a in a strong wind, the blade of the windmill 5 is horizontal in the 2-blade type. After that, the tower 2 and the wind turbine 5 are reliably held by operating the stoppers 12 and 12a again in the state of being received by the support base 13.

本発明の一実施例としての洋上風力発電設備の要部を示す側面図である。It is a side view which shows the principal part of the offshore wind power generation equipment as one Example of this invention. 図１のＡ部の構造を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the A section of FIG. 図１の洋上風力発電設備の強風時における風車降下待避状態を示す正面図である。It is a front view which shows the windmill fall avoidance state at the time of the strong wind of the offshore wind power generation equipment of FIG.

符号の説明Explanation of symbols

１ 浮体
２ タワー
３ ナセル
４ 発電機
５ 風車
６ 浮力タンク
６ａ 浮力タンク上部
６ｂ 浮力タンク下部
６ｅ 衝撃吸収板
６ｆ タンク張り出し部
７ 竪孔
８ 第１レール
８ａ，８ｂ ピボット
９ ガイドローラー
10 油圧シリンダ
10ａ 油圧シリンダ基端
10ｂ ロッド先端
11 第２レール
12，12ａ 油圧式ストッパー
13 支持台
13ａ 支柱
13ｂ リング状受け部
Ｗ 水面 DESCRIPTION OF SYMBOLS 1 Floating body 2 Tower 3 Nacelle 4 Generator 5 Windmill 6 Buoyancy tank 6a Buoyancy tank upper part 6b Buoyancy tank lower part 6e Shock absorber 6f Tank overhanging part 7 Bore hole 8 1st rail 8a, 8b Pivot 9 Guide roller
10 Hydraulic cylinder
10a Hydraulic cylinder base end
10b Rod end
11 Second rail
12, 12a Hydraulic stopper
13 Support base
13a prop
13b Ring-shaped receiving part W Water surface

Claims (7)

水面に沿って浮かぶ浮体と、同浮体に立設されたタワーと、同タワーの頂部に配設された発電機と、同発電機の入力軸の前端部に装着された風車とを備え、同風車を強風時には上記タワーと共に下降させるべく、上記浮体に上記タワーの昇降を案内しうる案内機構が設けられるとともに、同タワーの昇降駆動手段が設けられたことを特徴とする、洋上風力発電設備。   A floating body floating along the water surface, a tower standing on the floating body, a generator disposed on the top of the tower, and a windmill attached to the front end of the input shaft of the generator. An offshore wind power generation facility, wherein a guide mechanism capable of guiding the lifting of the tower is provided on the floating body and a driving mechanism for raising and lowering the tower is provided in order to lower the windmill together with the tower in a strong wind. 上記昇降駆動手段が注排水制御可能の浮沈式浮力タンクとして上記タワーの下端に装着され、同浮力タンクの少なくとも下部が没水状態に保たれていることを特徴とする、請求項１に記載の洋上風力発電設備。   2. The lift according to claim 1, wherein the elevating and lowering driving unit is mounted at the lower end of the tower as a floating / sink type buoyancy tank capable of controlling pouring and drainage, and at least a lower part of the buoyancy tank is maintained in a submerged state. Offshore wind power generation equipment. 上記案内機構が、上記浮体に形成された上下貫通型の竪孔の内側に設けられたことを特徴とする、請求項１または２に記載の洋上風力発電設備。   The offshore wind power generation facility according to claim 1, wherein the guide mechanism is provided inside a vertically penetrating fistula formed in the floating body. 上記タワーが截頭円錐状に形成されるとともに、同タワーの外周を取り囲むように同タワーに装着された上下方向の複数の第１レールを備え、上記案内機構が、上記第１レールに係合して上記タワーの昇降を案内すべくガイドローラーとして設けられたことを特徴とする、請求項３に記載の洋上風力発電設備。   The tower is formed in a frustoconical shape, and includes a plurality of vertical first rails mounted on the tower so as to surround the outer periphery of the tower, and the guide mechanism is engaged with the first rail. The offshore wind power generation facility according to claim 3, wherein the offshore wind power generation facility is provided as a guide roller for guiding ascent and descent of the tower. 上記第１レールは上記タワーの外周部に多段状に配設された多数の伸縮機構を介し装着されて、上記風車の作動時には上記伸縮機構の収縮作動により上記第１レールが上記タワーの外面に沿い格納されるように構成されていることを特徴とする、請求項４に記載の洋上風力発電設備。   The first rail is attached to the outer periphery of the tower through a number of expansion / contraction mechanisms arranged in a multistage manner. When the windmill is operated, the expansion / contraction mechanism contracts and the first rail is attached to the outer surface of the tower. The offshore wind power generation facility according to claim 4, wherein the offshore wind power generation facility is configured to be stored along the ocean. 上記浮力タンクの上部が、上記タワーの下降状態から上昇状態への移行の際に上記竪孔に進入すべく、上記ガイドローラーに係合して案内される上下方向の第２レールを備えるとともに、上記浮力タンクの下部が上記浮体の下面へ係合しうるタンク張り出し部を備えていることを特徴とする、請求項４または５に記載の洋上風力発電設備。   The upper part of the buoyancy tank is provided with a second rail in the vertical direction engaged and guided by the guide roller so as to enter the hole when the tower is moved from the lowered state to the raised state. 6. The offshore wind power generation facility according to claim 4, wherein a lower portion of the buoyancy tank includes a tank projecting portion that can engage with a lower surface of the floating body. 上記浮体に、上記タワーを固定するためのストッパーが設けられるとともに、上記タワーの下降状態で上記風車のブレードを支持するための支持台が設けられたことを特徴とする、請求項１〜６のいずれか１つに記載の洋上風力発電設備。
The floating body is provided with a stopper for fixing the tower, and a support base for supporting the blade of the windmill in a lowered state of the tower. The offshore wind power generation facility according to any one of the above.
JP2006092136A 2006-03-29 2006-03-29 Marine wind power generating equipment Pending JP2007263077A (en)

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