JP2000265936A - Darrieus type turbine and tidal power generating device - Google Patents
Darrieus type turbine and tidal power generating deviceInfo
- Publication number
- JP2000265936A JP2000265936A JP11071319A JP7131999A JP2000265936A JP 2000265936 A JP2000265936 A JP 2000265936A JP 11071319 A JP11071319 A JP 11071319A JP 7131999 A JP7131999 A JP 7131999A JP 2000265936 A JP2000265936 A JP 2000265936A
- Authority
- JP
- Japan
- Prior art keywords
- darrieus
- water turbine
- turbine
- type water
- shaft
- 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.)
- Pending
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
- Y02E10/20—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
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Landscapes
- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Wind Motors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はダリウス形水車の改
良にかかり、更に詳しくはダリウス形水車を潮流発電装
置に利用したときに、潮止まりから再び潮が流れ始める
際の初期起動の効率を高めて、確実に起動できるように
した水車の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a Darrieus type turbine, and more particularly, to improve the efficiency of initial startup when the tide starts to flow again after the tide stops when the Darrieus type turbine is used for a tidal power generator. Thus, the present invention relates to a structure of a water turbine that can be reliably started.
【０００２】[0002]
【従来の技術】これまで、水中に設けたダリウス形水車
により発電機を駆動する装置が知られており、ダリウス
形水車を利用した潮流発電装置が種々提案されている。
このような装置として、例えば水面上に設けたダリウス
形風車と、水面下に設けたダリウス形水車とを垂直な軸
を介して連動させ、水面上の発電機を駆動するようにし
た風水車発電装置（実開昭５８−６４８６７号）や、水
平な回転軸を有する一対の水没型ダリウス形水車によ
り、海底に据えつけた発電機を駆動するようにした、潮
流用水没型ダリウス形水車発電装置（特公平１−１４４
２８号）、或いは図８に示すような、軸２を垂直とした
ダリウス形水車１０で海底などに設置した発電機８を駆
動する、水没型のダリウス形水車発電装置などが公知で
ある。2. Description of the Related Art Hitherto, a device for driving a generator by a Darrieus-type water turbine provided in water has been known, and various tidal-current power generation devices using a Darrieus-type water turbine have been proposed.
As such a device, for example, a wind turbine generator in which a Darrieus-type wind turbine provided above the water surface and a Darrieus-type water turbine provided below the water surface are linked via a vertical axis to drive a generator on the water surface A submersible Darrieus-type water turbine generator for tidal currents, in which a generator mounted on the seabed is driven by a submerged Darrieus-type water turbine having a horizontal rotating shaft and a pair of submerged Darrieus-type water turbines having a horizontal rotating shaft. (Tokuhei 1-144
No. 28), or a submerged Darrieus-type water turbine power generator that drives a generator 8 installed on the seabed or the like with a Darrieus-type water turbine 10 having a vertical axis 2 as shown in FIG.
【０００３】このような潮流発電装置に用いられている
従来のダリウス形水車は、真直形状の翼３０を軸２に平
行となるよう設けてなるもので、潮流の方向がいずれに
変わっても水車の回転方向が一定である、という特性を
有している。しかしその一方で、潮流に必然的に起こる
潮止まりの際には回転が停止するが、その停止位置は不
定であるので、再び潮が流れはじめるときの、潮流の方
向に対するダリウス翼の位置や姿勢が乱れ、起動トルク
が大幅に変化する。そのため、潮流発電装置が一旦停止
すると、場合によっては再起動するに十分な起動トルク
が発生せず、短時間では発電装置が起動しないという欠
点があった。The conventional Darrieus type water turbine used in such a tidal current power generation device is provided with straight wings 30 so as to be parallel to the axis 2. Has a characteristic that the rotation direction is constant. However, on the other hand, the rotation stops when the tide stops inevitably due to the tide, but the stop position is undefined, so the position and attitude of the Darrieus wing with respect to the direction of the tide when the tide starts to flow again Is disturbed, and the starting torque greatly changes. For this reason, once the tidal power generation device is stopped, there is a drawback that, in some cases, a sufficient starting torque is not generated for restarting, and the power generation device is not started in a short time.
【０００４】[0004]
【発明が解決しようとする課題】そこで本発明は、潮止
まり後の、潮の流れ始めの弱い流れでも、流れの方向に
関係なく確実に起動できる、改良された起動性能を備え
たダリウス形水車を提供しようとするものであり、更に
はかかる改良されたダリウス形水車を利用して、信頼性
の高い潮流発電装置を提供することを目的とする。SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a Darrieus-type water turbine having improved starting performance, which can reliably start even a weak flow at the beginning of the tide after the tide stops, regardless of the flow direction. It is still another object of the present invention to provide a highly reliable tidal power generation device using the improved Darrieus type water turbine.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するこ
とができる本発明のダリウス形水車は、軸に対して回転
対称的に複数のダリウス翼を設けてなる水車において、
該ダリウス翼が、該軸と該ダリウス翼との距離を半径と
する円筒面に沿った螺旋の形状に形成されていることを
特徴とするものである。According to the present invention, there is provided a Darrieus-type water turbine having a plurality of Darrieus blades rotationally symmetric with respect to an axis.
The Darrieus blade is formed in a spiral shape along a cylindrical surface whose radius is the distance between the shaft and the Darrieus blade.
【０００６】そして、かかる本発明のダリウス形水車に
おいては、１個の水車に用いられるダリウス翼の数は３
であることが好ましく、また設けられた複数のダリウス
翼の長さの総合計が、前記螺旋の１ピッチの長さの整数
倍に略等しいこと、即ち、用いたダリウス翼の個数で前
記螺旋の１ピッチの長さを除した長さ、或いはその整数
倍の長さに、各ダリウス翼の長さが略等しいことが、本
発明の目的を達成するのに、更に好ましい。[0006] In the Darrieus type turbine of the present invention, the number of Darrieus blades used for one turbine is three.
It is preferable that the total sum of the lengths of the plurality of Darrieus wings provided is substantially equal to an integral multiple of the length of one pitch of the spiral, that is, the number of Darrieus wings used in the spiral It is further preferable that the length of each Darrieus wing is substantially equal to the length obtained by dividing the length of one pitch or an integer multiple thereof, in order to achieve the object of the present invention.
【０００７】更に本発明の潮流発電装置は、上記のよう
な構成を有するダリウス形水車の軸を、海底に固定した
架台に支持された発電機の回転軸に、伝達機構を介して
結合したものであり、かかる潮流発電装置におけるダリ
ウス形水車は、水没する位置に軸が垂直となるか、又は
水平となるように設けてなることが好ましい。The tidal current power generator of the present invention further comprises a Darrieus-type water turbine having the above-described configuration, which is connected via a transmission mechanism to a rotating shaft of a generator supported on a gantry fixed to the seabed. It is preferable that the Darrieus-type water turbine in such a tidal power generation device is provided so that its axis is vertical or horizontal at the position where it is submerged.
【０００８】[0008]
【発明の実施の形態】以下、本発明のダリウス形水車の
構造を、図に基づいて説明する。図１〜３に、本発明の
ダリウス形水車１の例を示すが、水車の軸２の端部と中
間部に、それぞれ翼取付枠４と翼取付枠５が固定されて
おり、その翼取付枠４、５の間に３個の翼３が、互いに
１２０°離れた位置を占めるよう、回転対称的に両端を
それぞれに固定して設けられている。これらの翼３は、
軸２を中心とし、軸２と翼３との距離を半径ｒとした、
円筒面ｃに沿った螺旋形状に形成されており、翼３の上
端３１の取付位置と下端３２の取付位置とは、軸２に対
して１２０°離れた隣の位置を占めている。従って、こ
れらの翼３の長さ、即ち翼取付枠４と翼取付枠５との間
隔は、上記の螺旋のピッチの３分の１に相当している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a Darrieus turbine according to the present invention will be described below with reference to the drawings. 1 to 3 show an example of a Darrieus-type water turbine 1 of the present invention. A wing mounting frame 4 and a wing mounting frame 5 are fixed to an end and an intermediate portion of a shaft 2 of the water turbine, respectively. The three wings 3 are rotationally symmetrically fixed at both ends so as to occupy positions 120 ° apart from each other between the frames 4 and 5. These wings 3
With the axis 2 as the center, the distance between the axis 2 and the wing 3 was defined as a radius r,
It is formed in a spiral shape along the cylindrical surface c, and the mounting position of the upper end 31 and the mounting position of the lower end 32 of the wing 3 occupy adjacent positions separated from the shaft 2 by 120 °. Therefore, the length of these wings 3, that is, the distance between the wing mounting frame 4 and the wing mounting frame 5, corresponds to one third of the above-mentioned spiral pitch.
【０００９】このような本発明のダリウス形水車１に用
いられる翼３の断面形状は、図１のＸ−Ｘにおける断面
を併せて示す図２、並びに図３によって明らかなよう
に、飛行機の翼の断面形状と類似したものとなってお
り、更に、翼３の外側面３３と内側面３４との中心位置
を示すそり線３５が、円筒面ｃと一致するように構成さ
れている。The sectional shape of the wing 3 used in the Darrieus type water turbine 1 of the present invention is shown in FIGS. 2 and 3 which also show a cross section taken along line X--X of FIG. , And a sled line 35 indicating the center position between the outer surface 33 and the inner surface 34 of the wing 3 is configured to coincide with the cylindrical surface c.
【００１０】このように構成された本発明のダリウス形
水車１について、水流の方向に対する翼の位置を変化さ
せたときの起動トルクを調べるために、翼取付枠４と翼
取付枠５の間隔が２００mm、翼３の回転半径、即ち円筒
面ｃの半径ｒが１５０mm、翼３の幅Ｌ、即ち、図３に示
した水車の軸２に垂直な翼断面における、先端から尾端
までの長さが５６mm、翼３の取付数が３で、取付間隔が
１２０°である、本発明の螺旋型ダリウス水車Ａを作成
した。また、比較のために、これと全く同じ諸元を有す
るが、形状が真直である翼３０を軸２と平行に設けてな
る、従来型のダリウス形水車Ｂを作成した。In order to examine the starting torque of the Darrieus type water turbine 1 of the present invention configured as described above when the position of the blade is changed with respect to the direction of the water flow, the distance between the blade mounting frame 4 and the blade mounting frame 5 is determined. 200 mm, the radius of rotation of the blade 3, that is, the radius r of the cylindrical surface c is 150 mm, and the width L of the blade 3, that is, the length from the tip to the tail end in the blade section perpendicular to the axis 2 of the turbine shown in FIG. 3. The spiral Darrieus turbine A of the present invention having a length of 56 mm, the number of wings 3 attached thereto, and an attachment interval of 120 ° was produced. For comparison, a conventional Darrieus-type water turbine B having exactly the same specifications as the above but having a straight wing 30 provided parallel to the axis 2 was prepared.
【００１１】そして、深さ３ｍ、幅３ｍ、長さ３０ｍの
回流水槽の上に設置した、図４のようなトルク測定装置
６の軸受け６１下端に設けたクランプに、これらの水車
Ａ、Ｂを取り付け、水中に沈めた水車の水流に対する位
置を、着目した翼が軸の真横、即ち水流の方向に対して
直角位置にある場合を初期位置として、翼の位置を水車
の順回転の方向に順次に５°ずつ移動させ、固定した水
車が、流速が毎秒１ｍの水流に対して発生する回転トル
ク、即ち起動トルク（Nm）を、カプリング６２を介して
トルク検出器６３により、それぞれ測定した。なお、図
４において、６４は、取り付けた水車の回転位置を固定
するための位置決め機能を備えた、電磁ブレーキ装置で
ある。Then, these water wheels A and B are mounted on a clamp provided at the lower end of a bearing 61 of a torque measuring device 6 as shown in FIG. 4, which is installed on a circulating water tank having a depth of 3 m, a width of 3 m and a length of 30 m. Attach the position of the water turbine to the water flow of the submerged water turbine, and set the position of the blade in the direction of forward rotation of the water turbine sequentially with the case where the focused wing is located right beside the axis, that is, the position perpendicular to the direction of the water flow. Then, the rotating turbine, which was moved at an angle of 5 °, and a rotating turbine generated by a fixed water turbine at a flow rate of 1 m per second, that is, a starting torque (Nm), was measured by a torque detector 63 via a coupling 62. In FIG. 4, reference numeral 64 denotes an electromagnetic brake device having a positioning function for fixing the rotational position of the mounted turbine.
【００１２】このようにして、水流の方向とダリウス形
水車の翼の位置との関係を、水車の初期位置からの回転
角度で表し、測定された起動トルク値（Nm）を、上記の
回転角度値（°）に対するグラフとして図５に示した。
このグラフをみると、真直な翼を備えた従来型のダリウ
ス形水車Ｂは、水流方向に対して翼の位置が移動するに
つれて、起動トルク（Nm）が大幅に変動し、場合により
負の値を示すのに対し、螺旋状の翼を備えた本発明のダ
リウス形水車Ａは、翼の位置がどのようであっても大き
な変化がなく、全ての翼によって発生する回転トルクの
総和、即ち起動トルク（Nm）は、水流の方向の影響を殆
ど受けないことがわかる。In this manner, the relationship between the direction of the water flow and the position of the wing of the Darrieus turbine is represented by the rotation angle from the initial position of the turbine, and the measured starting torque value (Nm) is calculated by the above rotation angle. FIG. 5 shows a graph of the value (°).
According to this graph, the conventional Darrieus-type water turbine B having straight wings has a large starting torque (Nm) as the position of the wings moves with respect to the direction of the water flow. On the other hand, the Darrieus-type water turbine A of the present invention having spiral wings has no significant change in the position of the wings regardless of the position of the wings. It can be seen that the torque (Nm) is hardly affected by the direction of the water flow.
【００１３】以上の試験は、翼の数が３個で翼の間隔が
１２０°の場合について行ったものであるが、例えば翼
の数が４個で翼の間隔が９０°、或いは翼の数が６個で
翼の間隔が６０°など、複数の翼を回転対称的に設けた
場合でも、設けられた複数の翼の長さの総合計が、前記
螺旋の１ピッチの長さの整数倍、特には１ピッチの長さ
と略等しくなるように製作された本発明のダリウス形水
車では、全く同様な効果が得られる。しかしながら、翼
の数が多くなるほど構成が複雑となり、また製作費用が
嵩むことが予想されるので、翼の数としては３個である
ことが最も好ましいと思われる。The above test was conducted on the case where the number of blades was 3 and the interval between the blades was 120 °. For example, the number of blades was 4 and the interval between the blades was 90 °, or the number of blades was Even when a plurality of blades are provided rotationally symmetrically, for example, with six blades at an interval of 60 °, the total length of the plurality of blades provided is an integral multiple of the length of one pitch of the spiral. In particular, in the Darrieus type water turbine of the present invention manufactured so as to be substantially equal to the length of one pitch, exactly the same effect can be obtained. However, as the number of wings increases, the configuration becomes more complicated and the production cost is expected to increase. Therefore, it is most preferable that the number of wings is three.
【００１４】上記のような、螺旋形状の翼を備えた本発
明のダリウス形水車は、従来型のダリウス形水車より
も、特に起動特性が優れているので、潮流発電装置に利
用することにより、従来の潮流発電装置より更に優れた
性能を有する潮流発電装置を、得ることができる。この
ような本発明の潮流発電装置の例を、図６に示すが、こ
こで７は架台であって、その上部には、軸２を水平にし
た本発明のダリウス形水車１が、２個１組で向かい合わ
せに設けられている。そして、水車１の軸２は発電機８
の回転軸に、伝達機構を介して結合されているものであ
る。なお、軸２は翼３の強度を高めることにより省略す
ることができ、その場合には水流が乱されることが少な
いので、より安定した水車の回転運動が期待できる。[0014] The Darrieus turbine of the present invention having the spiral wings as described above is particularly superior in starting characteristics to the conventional Darrieus turbine, so that it is used in a tidal power generator. It is possible to obtain a tidal current power generation device having even better performance than a conventional tidal current power generation device. FIG. 6 shows an example of such a tidal power generation device of the present invention. Here, reference numeral 7 denotes a gantry, and two Darrieus-type water turbines 1 of the present invention having a horizontal shaft 2 are provided above the gantry. One set is provided facing each other. The shaft 2 of the turbine 1 is connected to a generator 8
Are connected via a transmission mechanism to the rotating shaft of The shaft 2 can be omitted by increasing the strength of the blades 3. In this case, since the water flow is less disturbed, more stable rotation of the water turbine can be expected.
【００１５】また本発明の潮流発電装置の別な例を、図
７に示す。この例の潮流発電装置は、上記の例の潮流発
電装置と同様な架台７の上部に、軸２を垂直にした本発
明のダリウス形水車１が設けられているもので、その軸
２は発電機８の回転軸に直結してある。この例において
も軸２は必ずしも必要ではない。このような本発明の潮
流発電装置はいずれも、潮止まりの後の再起動が極めて
容易であり、発電効率が良好で、信頼性も高いものであ
る。FIG. 7 shows another example of the tidal current power generator of the present invention. The tidal power generator of this example is provided with a Darrieus-type water turbine 1 of the present invention having a vertical shaft 2 on the upper part of a gantry 7 similar to the tidal power generator of the above example. Directly connected to the rotating shaft of the machine 8. Also in this example, the shaft 2 is not always necessary. All of the tidal current power generation devices of the present invention are extremely easy to restart after the tide stops, have good power generation efficiency, and have high reliability.
【００１６】[0016]
【発明の効果】本発明のダリウス形水車は、軸に対して
回転対称的に複数のダリウス翼を設けてなり、そのダリ
ウス翼が、軸とダリウス翼との距離を半径とする円筒面
に沿った螺旋形状に形成されているので、水流に対して
翼の位置が何処にあっても回転トルクが小さくなること
がなく、従って水車の起動トルクが大きく、如何なる方
向からの水流に対しても容易に起動する。そのため、か
かるダリウス形水車を利用した本発明の潮流発電装置
は、潮止まりの後の再起動が容易且つ確実であり、発電
効率が良好で、信頼性も高く、経済的であるという効果
がある。The Darrieus type turbine of the present invention is provided with a plurality of Darrieus blades rotationally symmetric with respect to an axis, and the Darrieus blades extend along a cylindrical surface whose radius is the distance between the shaft and the Darrieus blades. The helical shape makes it possible to reduce the rotational torque no matter where the blades are located with respect to the water flow, thus increasing the starting torque of the turbine and making it easy to handle water flow from any direction. To start. Therefore, the tidal current power generation device of the present invention using such a Darrieus type water turbine has an effect that restart after tide stop is easy and reliable, power generation efficiency is good, reliability is high, and economical. .
【図１】本発明のダリウス形水車の例の正面図である。FIG. 1 is a front view of an example of a Darrieus type water turbine according to the present invention.
【図２】本発明のダリウス形水車の例の平面図である。FIG. 2 is a plan view of an example of a Darrieus type water turbine according to the present invention.
【図３】本発明のダリウス形水車の例における、軸に垂
直に切断したときの翼の断面図である。FIG. 3 is a cross-sectional view of a wing when cut perpendicular to an axis in an example of the Darrieus type water turbine of the present invention.
【図４】水車の回転トルクを測定する装置の概念図であ
る。FIG. 4 is a conceptual diagram of an apparatus for measuring a rotating torque of a water turbine.
【図５】ダリウス形水車の翼の水流に対する位置と起動
トルクとの関係を示すグラフである。FIG. 5 is a graph showing a relationship between a position of a blade of a Darrieus type water turbine relative to a water flow and a starting torque.
【図６】本発明のダリウス形水車を利用した潮流発電装
置の例の、一部を切り欠いた正面図である。FIG. 6 is a partially cutaway front view of an example of a tidal power generation device using the Darrieus type water turbine of the present invention.
【図７】本発明のダリウス形水車を利用した潮流発電装
置の別な例の正面図である。FIG. 7 is a front view of another example of the tidal current power generation device using the Darrieus type water turbine of the present invention.
【図８】従来のダリウス形水車を利用した公知の潮流発
電装置の正面図である。FIG. 8 is a front view of a known tidal power generation device using a conventional Darrieus type water turbine.
１ ダリウス形水車 ２ 軸 ３ 翼 ３０ 真直形状の翼 ３１ 上端 ３２ 下端 ３３ 外側面 ３４ 内側面 ３５ そり線 ４ 翼取付枠 ５ 翼取付枠 ６ トルク測定装置 ６１ 軸受け ６２ カプリング ６３ トルク検出器 ６４ 電磁ブレーキ装置 ７ 架台 ８ 発電機 ｃ 円筒面 ｒ 円筒面の半径 Ｌ 翼の幅 REFERENCE SIGNS LIST 1 Darrieus-type water turbine 2 shaft 3 wing 30 straight wing 31 upper end 32 lower end 33 outer surface 34 inner surface 35 warp wire 4 wing mounting frame 5 wing mounting frame 6 torque measuring device 61 bearing 62 coupling 63 torque detector 64 electromagnetic brake device 7 Mount 8 Generator c Cylindrical surface r Radius of cylindrical surface L Wing width
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H072 AA06 BB08 BB40 CC31 3H074 AA06 AA12 BB03 BB10 CC11 3H078 AA08 BB06 CC02 CC13 CC22 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H072 AA06 BB08 BB40 CC31 3H074 AA06 AA12 BB03 BB10 CC11 3H078 AA08 BB06 CC02 CC13 CC22
Claims (6)
翼を設けてなる水車において、該ダリウス翼が、該軸と
該ダリウス翼との距離を半径とする円筒面に沿った螺旋
の形状に形成されていることを特徴とするダリウス形水
車。1. A water turbine having a plurality of Darrieus blades provided rotationally symmetrically with respect to an axis, wherein the Darrieus blade has a spiral shape along a cylindrical surface whose radius is the distance between the shaft and the Darrieus blade. A Darrieus-type water turbine characterized by being formed in.
１に記載のダリウス形水車。2. The Darrieus type water turbine according to claim 1, wherein the number of said Darrieus wings is three.
の総合計が、前記螺旋の１ピッチの長さの整数倍に略等
しい、請求項１又は２に記載のダリウス形水車。3. The Darrieus type water turbine according to claim 1, wherein a total length of the plurality of Darrieus blades provided is substantially equal to an integral multiple of a length of one pitch of the spiral.
ダリウス形水車の軸を、海底に固定した架台に支持され
た発電機の回転軸に、伝達機構を介して結合したことを
特徴とする潮流発電装置。4. A shaft of the Darrieus-type water turbine according to any one of claims 1 to 3, which is connected to a rotating shaft of a generator supported on a gantry fixed to the seabed via a transmission mechanism. And tidal power generator.
軸が垂直となるように設けてなる請求項４に記載の潮流
発電装置。5. The tidal power generator according to claim 4, wherein the Darrieus-type water turbine is provided at a position where it is submerged so that its axis is vertical.
軸が水平となるように設けてなる請求項４に記載の潮流
発電装置。6. The tidal power generator according to claim 4, wherein the Darrieus type water turbine is provided at a position where it is submerged so that an axis thereof is horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11071319A JP2000265936A (en) | 1999-03-17 | 1999-03-17 | Darrieus type turbine and tidal power generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11071319A JP2000265936A (en) | 1999-03-17 | 1999-03-17 | Darrieus type turbine and tidal power generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000265936A true JP2000265936A (en) | 2000-09-26 |
Family
ID=13457152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11071319A Pending JP2000265936A (en) | 1999-03-17 | 1999-03-17 | Darrieus type turbine and tidal power generating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000265936A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100814859B1 (en) | 2006-11-29 | 2008-03-20 | 한국해양연구원 | Maintenance system of helical turbine |
| WO2009066966A2 (en) * | 2007-11-23 | 2009-05-28 | Korea Ocean Research And Development Institute | Maintenance system of helical turbine |
| JP2009264119A (en) * | 2008-04-22 | 2009-11-12 | Yoshiyasu Muraoka | Ocean current power generation system dedicated to future of our dear earth and children |
| KR100929494B1 (en) * | 2007-11-23 | 2009-12-03 | 한국해양연구원 | Prefab Helical Turbine |
| JP2010528225A (en) * | 2007-05-30 | 2010-08-19 | アイシス・イノベーション・リミテッド | Water wheel |
| US8393853B2 (en) * | 2007-11-19 | 2013-03-12 | Ocean Renewable Power Company, Llc | High efficiency turbine and method of generating power |
| AT512564A1 (en) * | 2012-03-05 | 2013-09-15 | Leitl | Wind turbine and method for generating rotary energy by wind |
| CN104131940A (en) * | 2014-07-24 | 2014-11-05 | 大连吉诺贸易有限公司 | Fluid dynamic providing system propeller blade |
| CN106593745A (en) * | 2016-12-29 | 2017-04-26 | 河海大学 | Double-runner water turbine for cooling tower and with spherical spiral blades |
-
1999
- 1999-03-17 JP JP11071319A patent/JP2000265936A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100814859B1 (en) | 2006-11-29 | 2008-03-20 | 한국해양연구원 | Maintenance system of helical turbine |
| JP2010528225A (en) * | 2007-05-30 | 2010-08-19 | アイシス・イノベーション・リミテッド | Water wheel |
| US8393853B2 (en) * | 2007-11-19 | 2013-03-12 | Ocean Renewable Power Company, Llc | High efficiency turbine and method of generating power |
| US8740545B2 (en) | 2007-11-23 | 2014-06-03 | Korea Ocean Research And Development Institute (Kordi) | Maintenance system of helical turbine |
| KR100929494B1 (en) * | 2007-11-23 | 2009-12-03 | 한국해양연구원 | Prefab Helical Turbine |
| KR100929495B1 (en) * | 2007-11-23 | 2009-12-03 | 한국해양연구원 | Prefab Helical Turbine |
| WO2009066966A3 (en) * | 2007-11-23 | 2009-08-20 | Korea Ocean Res Dev Inst | Maintenance system of helical turbine |
| WO2009066966A2 (en) * | 2007-11-23 | 2009-05-28 | Korea Ocean Research And Development Institute | Maintenance system of helical turbine |
| US8807917B2 (en) | 2007-11-23 | 2014-08-19 | Korea Ocean Research And Development Institute (Kordi) | Maintenance system of helical turbine |
| JP2009264119A (en) * | 2008-04-22 | 2009-11-12 | Yoshiyasu Muraoka | Ocean current power generation system dedicated to future of our dear earth and children |
| AT512564A1 (en) * | 2012-03-05 | 2013-09-15 | Leitl | Wind turbine and method for generating rotary energy by wind |
| CN104131940A (en) * | 2014-07-24 | 2014-11-05 | 大连吉诺贸易有限公司 | Fluid dynamic providing system propeller blade |
| CN106593745A (en) * | 2016-12-29 | 2017-04-26 | 河海大学 | Double-runner water turbine for cooling tower and with spherical spiral blades |
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