JP5681148B2 - Ocean current power generation method and maintenance method - Google Patents

Ocean current power generation method and maintenance method Download PDF

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JP5681148B2
JP5681148B2 JP2012150877A JP2012150877A JP5681148B2 JP 5681148 B2 JP5681148 B2 JP 5681148B2 JP 2012150877 A JP2012150877 A JP 2012150877A JP 2012150877 A JP2012150877 A JP 2012150877A JP 5681148 B2 JP5681148 B2 JP 5681148B2
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power generation
ocean current
hull
flow
flow conduit
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JP2013245670A (en
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重治 黒田
重治 黒田
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重治 黒田
重治 黒田
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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
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

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  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Description

技術の分野Technology field

本発明は海流発電装置に関し、特に、プロペラ形水車の発電装置に関する。  The present invention relates to an ocean current power generation device, and more particularly to a power generation device for a propeller type water turbine.

従来のプロペラ形水車の発電装置の発電停止原因に、プロペラの羽根の変形・損傷がある。羽根の変形・損傷する原因には海流の流れ（向きや速さ）が急変する乱流で、羽根に過大な負担がかかる場合と、海流中の漂流物・魚類の衝突で変形や損傷で回転が止まり、発電不能になる。
例へば、特開２００４−６８６３８の示す海流発電装置は、プロペラ形水車の直径３ｍの羽根は、乱流や漂流物・魚類の衝突で変形したり損傷で回転が止まり、メンテナンスを行うため発電不能になる。The propeller blades are deformed and damaged as a cause of the power generation stop of the power generation device of the conventional propeller type turbine. The cause of deformation and damage to the blades is the turbulent flow where the flow (direction and speed) of the ocean current changes abruptly, and the blades are overloaded, and the blades rotate due to deformation and damage due to the collision of drifting objects and fish in the ocean current. Stops and power generation becomes impossible.
For example, in the ocean current power generation device disclosed in Japanese Patent Application Laid-Open No. 2004-68638, the propeller-type water turbine blades with a diameter of 3 m are deformed due to turbulence, collision with drifting objects and fish, or stopped rotating due to damage, and maintenance is performed, making power generation impossible. Become.

海流発電装置に関する先行技術は以下に示すとおりである。  Prior art relating to ocean current power generation devices is as follows.

特開２００４−６８６３８の海流発電装置のプロペラ形水車の羽根は、乱流で過大な負担がかかることになる。又、海流中の漂流物・魚類の衝突で羽根は変形したり損傷して回転が止まり、メンテナンスのため発電不能になる。  The blades of the propeller type turbine of the ocean current power generation apparatus disclosed in Japanese Patent Application Laid-Open No. 2004-68638 are excessively burdened by turbulent flow. In addition, the blades are deformed or damaged by the collision of drifting objects and fish in the ocean current, and the rotation stops and power generation becomes impossible for maintenance.

特開２００５−２４０７８６の潮流発電装置は、拡大した流入口の筒状体内に潮流と共に漂流物・魚類が流入し、縮小した流出口で集中して、水車に衝突することで羽根の変形・損傷が生じて回転は止まり、メンテナンスのため発電不能になる。  Japanese Patent Laying-Open No. 2005-240786 discloses a tidal current power generation apparatus in which a drifting object or fish flows into a cylindrical body of an enlarged inlet along with a tidal current, concentrates at a reduced outlet, and collides with a water turbine to deform or damage a blade. Occurs and rotation stops and power generation is disabled for maintenance.

特開２００４−６８６３８公報JP 2004-68638 A 特開２００５−２４０７８６公報JP-A-2005-240786

発明が解決しようとする課題Problems to be solved by the invention

海流発電装置に関し、プロペラ形水車の回転停止原因の羽根の変形・損傷を除き安定的に発電を確保する。  Regarding ocean current power generation equipment, stable power generation is ensured except for blade deformation and damage that cause rotation of propeller turbines.

課題を解決する手段Means to solve the problem

上記の課題を解決するには、プロペラ形水車の羽根の変形・損傷原因である乱流および漂流物・魚類の衝突を除くことにある。
請求項１に示す円筒の適長の流導管は、乱流が流導管内で流れの向きや速さに一定性をもたせることになり、羽根には過大な負担をかけないことになる。又、漂流物・魚類は、流導管流入口にセットされたフィルターネットでもって、流導管内の流入を防ぐことになる。
従って、プロペラ水車の羽根の変形・損傷による回転停止原因を除くことで、発電停止を回避し、安定的に発電を可能にする。The solution to the above problem is to eliminate the turbulent flow and the collision of drifting objects and fish that cause the deformation and damage of the blades of the propeller type turbine.
In the cylindrical flow conduit of the first aspect, the turbulent flow makes the flow direction and speed constant in the flow conduit, and the blade is not overburdened. In addition, drifting objects and fish are prevented from flowing into the flow conduit by a filter net set at the flow conduit inlet.
Therefore, by eliminating the cause of the rotation stop due to the deformation and damage of the blades of the propeller turbine, it is possible to avoid the stop of power generation and to stably generate power.

また、請求項２に記載の発明は、請求項１の流導管内の適位置に多数の貫通孔をもった調整板によって、管内の流れを均等化する。  The invention according to claim 2 equalizes the flow in the pipe by the adjusting plate having a large number of through holes at appropriate positions in the flow conduit of claim 1.

発明の効果Effect of the invention

以上のように本発明の海流発電装置は、海流の乱流や漂流物・魚類の衝突によるプロペラの羽根の変形・損傷原因を除くことで、水車回転停止を回避して、安定的に電力の確保を可能にする。
さらには、羽根の変形・損傷に伴う海中での困難なメンテナンス作業も省略することで、コスト削減を可能にする。As described above, the ocean current power generation device according to the present invention eliminates the cause of deformation and damage of the propeller blades due to the turbulence of the ocean current and the collision of drifting objects and fish, thereby avoiding the stoppage of the turbine wheel and stably supplying the power. Make it possible.
Furthermore, the cost can be reduced by omitting difficult maintenance work in the sea accompanying the deformation and damage of the blades.

本発明実施例の海流発電装置の概略断面図。1 is a schematic cross-sectional view of an ocean current power generation apparatus according to an embodiment of the present invention. 本発明の海流発電装置の海洋での使用例を示す概略図。Schematic which shows the usage example in the ocean of the ocean current electric power generating apparatus of this invention.

以下、本発明にかかる海流発電装置の実施形態について説明する。  Hereinafter, an embodiment of a current generator according to the present invention will be described.

図に示す本発明の海流発電装置１のＦＲＰ製流導管２は、長さ３０ｍで内径３．５ｍの流入口１２にはフィルターネット３が付けられており、同流導管２の流出口１３内側近傍に、直径３ｍのプロペラ形水車発電機４が支持板６で内径センターに支持されている。
同流導管２の中央に多数の貫通孔を形成した調整板７を配置して、貫通孔を通過した流れは均等化し羽根５に向かう。
図２は、浮体（船体）９の下部に海流発電装置１を固定し、流導管２のネット３は海流の流れに向いた状態でアンカー８に係留されている。
流導管２の流入口１２および流出口１３の内側に示す点線１１は、開閉弁を示す。開閉弁１１は、流導管２内でメンテナンスを行う際、開閉弁を閉じて管内の海水を吸引ポンプで放出し、メンテナンス作業を可能にする。The FRP flow conduit 2 of the ocean current power generation apparatus 1 of the present invention shown in the figure has a filter net 3 attached to an inlet 12 having a length of 30 m and an inner diameter of 3.5 m, and the inside of the outlet 13 of the same conduit 2. In the vicinity, a propeller-type water turbine generator 4 having a diameter of 3 m is supported on the inner diameter center by a support plate 6.
An adjusting plate 7 having a large number of through holes is arranged at the center of the same flow conduit 2, and the flow passing through the through holes is equalized and directed to the blades 5.
In FIG. 2, the ocean current power generation device 1 is fixed to the lower part of a floating body (hull) 9, and the net 3 of the flow conduit 2 is moored to the anchor 8 in a state suitable for the flow of the ocean current.
The dotted line 11 shown inside the inlet 12 and the outlet 13 of the outflow conduit 2 indicates an on-off valve. The open / close valve 11 closes the open / close valve and discharges seawater in the pipe with a suction pump when maintenance is performed in the flow conduit 2 to enable maintenance work.

１ 海流発電装置 （矢印は流れを示す）
２ 流導管
３ フィルターネット
４ プロペラ形発電機
５ 羽根
６ 支持板
７ 調整板
８ アンカー
９ 浮体（船体）
１０ 係留ロープ
１１ 開閉弁
１２ 流入口
１３ 流出口1 Current generator (arrows indicate flow)
2 Flow conduit 3 Filter net 4 Propeller type generator 5 Blade 6 Support plate 7 Adjustment plate 8 Anchor 9 Floating body (hull)
10 Mooring rope 11 On-off valve 12 Inlet 13 Outlet

Claims (1)

左右側面のそれぞれに１つのアンカーを有し海面に浮く船体と、円筒形で適長の流導管の流入口に着在自在のフィルターネットを配置し、同管内部の適位置にプロペラ形水車発電機を配置した発電装置と、を利用する発電方法であり、前記船体の下部に前記発電装置を固定し、前記流導管を海流の流れに向いた状態で前記左右側面のそれぞれのアンカーを海底に下ろし前記船体を係留し、前記海流の流れから見た場合に、前記２つのアンカーと前記船体とで台形を形成し、前記台形の内側に前記発電装置を配置し、前記船体の下部が、断面楕円形状であり、前記楕円形状の最下部と前記円筒形の流導管の最上部が連結されている、発電する方法。 A hull that floats on the sea surface with one anchor on each of the left and right sides, and a cylindrical filter net that can be attached to the inlet of an appropriate length of flow conduit, and a propeller-type turbine generator at an appropriate position inside the pipe And a power generation method using the power generation device, wherein the power generation device is fixed to a lower part of the hull, and the anchors on the left and right side surfaces are placed on the seabed in a state where the flow conduit faces the flow of the ocean current. lower mooring the hull, when viewed from the flow of the ocean current, the trapezoid is formed by the two anchors and the hull, the power generating device disposed inside the trapezoid, the lower part of the hull cross-section A method for generating electricity, wherein the method has an elliptical shape, and the lowest part of the elliptical shape and the uppermost part of the cylindrical flow conduit are connected.
JP2012150877A 2012-05-28 2012-05-28 Ocean current power generation method and maintenance method Active JP5681148B2 (en)

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