WO2022249417A1 - Variable pitch propeller/turbine and power generation sailing ship provided with variable pitch propeller/turbine - Google Patents

Variable pitch propeller/turbine and power generation sailing ship provided with variable pitch propeller/turbine Download PDF

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WO2022249417A1
WO2022249417A1 PCT/JP2021/020305 JP2021020305W WO2022249417A1 WO 2022249417 A1 WO2022249417 A1 WO 2022249417A1 JP 2021020305 W JP2021020305 W JP 2021020305W WO 2022249417 A1 WO2022249417 A1 WO 2022249417A1
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turbine
propeller
pitch propeller
variable
variable pitch
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PCT/JP2021/020305
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French (fr)
Japanese (ja)
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大内一之
橋詰泰久
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株式会社大内海洋コンサルタント
株式会社西日本流体技研
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Priority to PCT/JP2021/020305 priority Critical patent/WO2022249417A1/en
Publication of WO2022249417A1 publication Critical patent/WO2022249417A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control

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  • the present invention relates to a controllable pitch propeller turbine and a power generating sailboat equipped with a controllable pitch propeller turbine.
  • Patent Document 1 the present applicant has a propeller turbine, operates the propeller turbine to generate and store electricity during strong winds, and uses the stored electricity to propel operate the propeller turbine during weak winds to assist propulsion.
  • a power-generating sailing ship As the propeller turbine, we proposed a fixed shaft propeller turbine and a pod type propeller turbine which is a kind of azimuth thruster.
  • the applicant of the present application proposed that a propeller turbine used in a power-generating sailing ship should have a variable pitch.
  • a fixed shaft variable pitch propeller is a well-known technology as disclosed in Patent Documents 2, 3 and the like.
  • a variable pitch propeller for an azimuth thruster is proposed in Patent Documents 4, 5 and the like.
  • the airfoil of a propeller/turbine blade does not have camber (the difference between the chord line and the center line of the blade thickness)
  • the relative water flow water flow as seen from the blade
  • the blades exhibit the same performance if the inflow angle (the angle between the cord line and the relative water flow) is the same. Therefore, even with conventional variable pitch propellers that have a narrow control range for the pitch angle (the angle formed by the cord line and the direction of rotation of the propeller), if the airfoil of the blades does not have camber, the propeller can be operated by optimizing the inflow angle. and turbine operation can be performed without hindrance.
  • a blade having an airfoil without camber is inferior in performance as a propeller and as a turbine compared to a blade having an airfoil with camber, which will be described later.
  • the airfoil of a propeller/turbine blade has camber, as shown in FIG.
  • the performance of the blade can be sufficiently exhibited by suppressing it, as shown in FIG.
  • the performance of the blade cannot be fully exhibited.
  • conventional variable pitch propellers which have a narrow pitch angle control range, it is not possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle during turbine operation.
  • the present invention has been made in view of the above problems, and provides a variable pitch propeller/turbine having cambered airfoil blades. It is an object of the present invention to provide a variable-pitch propeller turbine capable of impinging a relative water flow at an angle and a power-generating sailing vessel equipped with the variable-pitch propeller turbine.
  • the present invention provides a variable pitch propeller/turbine having cambered blades, wherein the lower camber side blades are controlled only by variable control of the pitch angle during both the propeller operation and the turbine operation.
  • a variable pitch propeller turbine characterized by the relative water flow impinging on the face at a proper angle of inflow.
  • the pitch angle of the blades of a conventional variable pitch propeller is variably controlled within a range of -10° ⁇ pitch angle ⁇ +30°.
  • the pitch angle is variably controlled in the range of -10° ⁇ pitch angle ⁇ +150°, it is possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle when the turbine is operating, and the performance of the blade can be improved by propeller operation. It can be made to the same extent as time and can be made to function sufficiently as a turbine blade. Only by variable control of the pitch angle, it is possible to apply the relative water flow to the blade surface on the lower camber side at an appropriate inflow angle both when the propeller is operating and when the turbine is operating.
  • a power-generating sailboat comprising the variable pitch propeller/turbine described above.
  • a power-generating sailboat equipped with a variable-pitch propeller turbine according to the present invention can effectively generate power in strong winds.
  • the variable-pitch propeller-turbine is an azimuth thruster variable-pitch propeller-turbine. Since the azimuth thruster can rotate the propeller/turbine 360°, it has the advantage that the propeller/turbine can always face the water current in a sailing ship with a large lateral flow.
  • variable pitch propeller/turbine having cambered airfoil blades, wherein the variable pitch is capable of applying a relative water flow to the lower camber side blade surface at an appropriate inflow angle during both the propeller operation and the turbine operation.
  • a propeller turbine and a power-generating sailboat carrying the turbine are provided.
  • FIG. 4 is a diagram showing streamlines around a blade having a camber when a water flow is applied to the blade. (a) shows the streamlines when the water flow hits the blade surface on the lower camber side at an appropriate inflow angle, and (b) shows the streamline when the water flow hits the blade surface on the upper camber side.
  • 1 is a configuration diagram of a power-generating sailboat equipped with a variable-pitch propeller turbine according to an embodiment of the present invention
  • FIG. FIG. 3 is a configuration diagram of a power-generating sailing ship equipped with a variable-pitch propeller turbine according to another embodiment of the present invention
  • FIG. 4 is a diagram showing the control range of the pitch angle (positive) of the blades of the variable-pitch propeller/turbine; (a) shows the pitch angle control range of a conventional variable pitch propeller, and (b) shows the pitch angle control range of a variable pitch propeller/turbine according to an embodiment of the present invention.
  • a controllable-pitch propeller-turbine according to an embodiment of the present invention and a power-generating sailboat equipped with the controllable-pitch propeller-turbine will be described.
  • the power storage device 4 may be a storage battery, and has a mutual conversion mechanism (for example, a water electrolysis device and a fuel cell, a hydrogen diesel generator, etc.) between electric power and a substance such as hydrogen.
  • a device that converts to electric power may be used.
  • the power storage device 14 may be a storage battery, or may be a device that has a mutual conversion mechanism between electric power and a substance such as hydrogen, converts electric power into a substance and stores the substance, or converts the stored substance into electric power.
  • variable pitch propeller turbines 2, 12 are provided with airfoil-shaped blades 21 having camber.
  • FIG. 4(a) shows the blade 21 when the pitch angle is about 30° and the boat is moving forward with the relative water flow striking the lower camber side blade surface.
  • the pitch angle becomes about -10°
  • the relative water flow hits the wing surface on the upper camber side and the ship moves backward.
  • the pitch angle is variably controlled up to about +150°, as shown in FIG. 4(b).
  • the performance of the blades 21 can be made approximately the same as when the propeller is operating, and the blades can sufficiently function as turbine blades.
  • By simply widening the control range of the pitch angle it is possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle even when the turbine is operating, so that it can be made to function sufficiently as a turbine blade.
  • Power-generating sailing ships A and B equipped with variable-pitch propeller turbines according to this embodiment can effectively generate power in strong winds.
  • variable-pitch propeller/turbine when the variable-pitch propeller/turbine is the variable-pitch propeller/turbine of the azimuth thruster including the pod type, the variable-pitch propeller/turbine is rotated by 360°. Therefore, there is an advantage that the variable pitch propeller/turbine can always face the water current in a sailing ship with a large lateral current. If the variable pitch propeller/turbine of the azimuth thruster is used as the variable pitch propeller/turbine, if the variable pitch propeller/turbine is rotated by 180°, even if the pitch angle control range is the same as before, the lower camber side blade surface Good turbine operation can be achieved because relative water flow can be applied. However, since the azimuth thrusters are large, there is a possibility that the behavior of the ship will become unstable during the 180° turn.
  • the present invention is widely applicable to variable pitch propeller turbines used in power generating sailboats.

Abstract

[Problem] To provide a variable pitch propeller/turbine which includes blades each with an airfoil having a camber, and which can apply, whether the propeller is activated or the turbine is activated, a relative water flow to each lower-camber-side blade surface at an appropriate inflow angle. [Solution] Provided is a variable pitch propeller/turbine which includes blades each with an airfoil having a camber, and which can apply, whether the propeller is activated or the turbine is activated, the relative water flow to each lower-camber-side blade surface at the appropriate inflow angle through only variable pitch-angle control.

Description

可変ピッチプロペラ・タービン及び可変ピッチプロペラ・タービンを備える発電帆船Controllable-pitch propeller-turbine and power-generating sailing vessel with controllable-pitch propeller-turbine
本発明は、可変ピッチプロペラ・タービン及び可変ピッチプロペラ・タービンを備える発電帆船に関するものである。 The present invention relates to a controllable pitch propeller turbine and a power generating sailboat equipped with a controllable pitch propeller turbine.
本出願人は、特許文献１において、プロペラ・タービンを備え、強風時にはプロペラ・タービンをタービン作動させて発電且つ蓄電し、弱風時には蓄電力を使用してプロペラ・タービンをプロペラ作動させ推進を補助する発電帆船を提案した。プロペラ・タービンとして、固定軸のプロペラ・タービンとアジマススラスターの一種であるポッド型のプロペラ・タービンとを提案した。
また本出願人は、非特許文献１において、発電帆船に使用するプロペラ・タービンを可変ピッチとすることを提案した。
固定軸可変ピッチプロペラは特許文献２、３等に開示されているように周知技術である。アジマススラスターの可変ピッチプロペラは特許文献４、５等で提案されている。 In Patent Document 1, the present applicant has a propeller turbine, operates the propeller turbine to generate and store electricity during strong winds, and uses the stored electricity to propel operate the propeller turbine during weak winds to assist propulsion. proposed a power-generating sailing ship. As the propeller turbine, we proposed a fixed shaft propeller turbine and a pod type propeller turbine which is a kind of azimuth thruster.
In Non-Patent Document 1, the applicant of the present application proposed that a propeller turbine used in a power-generating sailing ship should have a variable pitch.
A fixed shaft variable pitch propeller is a well-known technology as disclosed in Patent Documents 2, 3 and the like. A variable pitch propeller for an azimuth thruster is proposed in Patent Documents 4, 5 and the like.
特許第６７４１３７２号公報Japanese Patent No. 6741372 特開２０１０－１０５４３７号公報JP 2010-105437 A 特開２０１７－１９００２０号公報JP 2017-190020 A 特許第３６１８６０５号公報Japanese Patent No. 3618605 特開２０２０－０１５３４６号公報JP 2020-015346 A
プロペラ・タービンの羽根の翼型がキャンバー（コード線と翼厚中心線との差）を有さない場合、羽根の一対の翼面のどちらに相対水流（羽根から見た水流）が当たっても、流入角（コード線と相対水流との成す角度）が同じであれば羽根は同じ性能を発揮する。従って、ピッチ角（コード線とプロペラ回転方向との成す角度）の制御範囲が狭い従来の可変ピッチプロペラでも、羽根の翼型がキャンバーを有さない場合には、流入角を適正化してプロペラ作動とタービン作動とを支障なく行わせることが可能である。しかし、翼型がキャンバーを有さない羽根は後述する翼型がキャンバーを有する羽根に比べてプロペラとしてもタービンとして性能が劣る。
プロペラ・タービンの羽根の翼型がキャンバーを有する場合、図１（ａ）に示すように、ロアーキャンバー側翼面に適正流入角で相対水流を当てることにより、アッパーキャンバー側翼面での水流の剥離を抑制して羽根の性能を十分に発揮させることができるが、図１（ｂ）に示すように、アッパーキャンバー側翼面に相対水流を当てた場合には、ロアーキャンバー側翼面で水流が剥離し、羽根の性能を十分に発揮させることができない。ピッチ角の制御範囲が狭い従来の可変ピッチプロペラでは、タービン作動時にロアーキャンバー側翼面に適正流入角で相対水流を当てることができない。
本発明は上記問題に鑑みてなされたものであり、キャンバーを有する翼型の羽根を備える可変ピッチプロペラ・タービンであって、プロペラ作動時とタービン作動時の何れでも、ロアーキャンバー側翼面に適正流入角で相対水流を当てることができる可変ピッチプロペラ・タービンと当該可変ピッチプロペラ・タービンを備える発電帆船を提供することを目的とする。 If the airfoil of a propeller/turbine blade does not have camber (the difference between the chord line and the center line of the blade thickness), the relative water flow (water flow as seen from the blade) hits either of the pair of blade surfaces of the blade. , the blades exhibit the same performance if the inflow angle (the angle between the cord line and the relative water flow) is the same. Therefore, even with conventional variable pitch propellers that have a narrow control range for the pitch angle (the angle formed by the cord line and the direction of rotation of the propeller), if the airfoil of the blades does not have camber, the propeller can be operated by optimizing the inflow angle. and turbine operation can be performed without hindrance. However, a blade having an airfoil without camber is inferior in performance as a propeller and as a turbine compared to a blade having an airfoil with camber, which will be described later.
When the airfoil of a propeller/turbine blade has camber, as shown in FIG. Although the performance of the blade can be sufficiently exhibited by suppressing it, as shown in FIG. The performance of the blade cannot be fully exhibited. With conventional variable pitch propellers, which have a narrow pitch angle control range, it is not possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle during turbine operation.
The present invention has been made in view of the above problems, and provides a variable pitch propeller/turbine having cambered airfoil blades. It is an object of the present invention to provide a variable-pitch propeller turbine capable of impinging a relative water flow at an angle and a power-generating sailing vessel equipped with the variable-pitch propeller turbine.
上記課題を解決するために、本発明においては、キャンバーを有する翼型の羽根を備える可変ピッチプロペラ・タービンであって、ピッチ角の可変制御のみによって、プロペラ作動時にもタービン作動時にもロアーキャンバー側翼面に適正流入角で相対水流が当たることを特徴とする可変ピッチプロペラ・タービンを提供する。
従来の可変ピッチプロペラの羽根のピッチ角は、-１０°≦ピッチ角≦+３０°程度の範囲で可変制御されていた。ピッチ角が正の時はロアーキャンバー側翼面に相対水流が当たり、ピッチ角が負の時はアッパーキャンバー側翼面に相対水流が当たる。従って、-１０°≦ピッチ角≦+１５０°程度の範囲でピッチ角を可変制御すれば、タービン作動時にロアーキャンバー側翼面に適正流入角で相対水流を当てることができ、羽根の性能をプロペラ作動時と同程度にすることができ、タービン羽根として十分に機能させることができる。ピッチ角の可変制御のみによって、プロペラ作動時にもタービン作動時にもロアーキャンバー側翼面に適正流入角で相対水流を当てることができる。 In order to solve the above-mentioned problems, the present invention provides a variable pitch propeller/turbine having cambered blades, wherein the lower camber side blades are controlled only by variable control of the pitch angle during both the propeller operation and the turbine operation. To provide a variable pitch propeller turbine characterized by the relative water flow impinging on the face at a proper angle of inflow.
The pitch angle of the blades of a conventional variable pitch propeller is variably controlled within a range of -10°≤pitch angle≤+30°. When the pitch angle is positive, the relative water flow hits the blade surface on the lower camber side, and when the pitch angle is negative, the relative water flow hits the blade surface on the upper camber side. Therefore, if the pitch angle is variably controlled in the range of -10° ≤ pitch angle ≤ +150°, it is possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle when the turbine is operating, and the performance of the blade can be improved by propeller operation. It can be made to the same extent as time and can be made to function sufficiently as a turbine blade. Only by variable control of the pitch angle, it is possible to apply the relative water flow to the blade surface on the lower camber side at an appropriate inflow angle both when the propeller is operating and when the turbine is operating.
本発明においては、上記可変ピッチプロペラ・タービンを備えることを特徴とする発電帆船を提供する。
本発明に係る可変ピッチプロペラ・タービンを備える発電帆船は、強風時に効果的に発電することができる。
本発明の好ましい態様においては、可変ピッチプロペラ・タービンはアジマススラスターの可変ピッチプロペラ・タービンである。
アジマススラスターは、プロペラ・タービンを３６０°旋回させることができるので、横流れの大きな帆船において、プロペラ・タービンを常に水流に正対させることができる利点を有する。 In accordance with the present invention, there is provided a power-generating sailboat comprising the variable pitch propeller/turbine described above.
A power-generating sailboat equipped with a variable-pitch propeller turbine according to the present invention can effectively generate power in strong winds.
In a preferred embodiment of the invention, the variable-pitch propeller-turbine is an azimuth thruster variable-pitch propeller-turbine.
Since the azimuth thruster can rotate the propeller/turbine 360°, it has the advantage that the propeller/turbine can always face the water current in a sailing ship with a large lateral flow.
本発明により、キャンバーを有する翼型の羽根を備える可変ピッチプロペラ・タービンであって、プロペラ作動時にも、タービン作動時にも、ロアーキャンバー側翼面に適正流入角で相対水流を当てることができる可変ピッチプロペラ・タービンと当該タービンを搭載した発電帆船が提供される。 According to the present invention, there is provided a variable pitch propeller/turbine having cambered airfoil blades, wherein the variable pitch is capable of applying a relative water flow to the lower camber side blade surface at an appropriate inflow angle during both the propeller operation and the turbine operation. A propeller turbine and a power-generating sailboat carrying the turbine are provided.
キャンバーを有する翼型の羽根に水流を当てた時の翼まわりの流線を示す図である。（ａ）はロアーキャンバー側翼面に適正流入角で水流を当てた時の流線を示し、（ｂ）はアッパーキャンバー側翼面に水流を当てた時の流線を示す。FIG. 4 is a diagram showing streamlines around a blade having a camber when a water flow is applied to the blade. (a) shows the streamlines when the water flow hits the blade surface on the lower camber side at an appropriate inflow angle, and (b) shows the streamline when the water flow hits the blade surface on the upper camber side. 本発明の実施例に係る可変ピッチプロペラ・タービンを備える発電帆船の構成図である。1 is a configuration diagram of a power-generating sailboat equipped with a variable-pitch propeller turbine according to an embodiment of the present invention; FIG. 本発明の他の実施例に係る可変ピッチプロペラ・タービンを備える発電帆船の構成図である。FIG. 3 is a configuration diagram of a power-generating sailing ship equipped with a variable-pitch propeller turbine according to another embodiment of the present invention; 可変ピッチプロペラ・タービンの羽根のピッチ角（正）の制御範囲を示す図である。（ａ）は従来の可変ピッチプロペラのピッチ角の制御範囲を示し、（ｂ）本発明の実施例に係る可変ピッチプロペラ・タービンのピッチ角の制御範囲を示す。FIG. 4 is a diagram showing the control range of the pitch angle (positive) of the blades of the variable-pitch propeller/turbine; (a) shows the pitch angle control range of a conventional variable pitch propeller, and (b) shows the pitch angle control range of a variable pitch propeller/turbine according to an embodiment of the present invention.
本発明の実施例に係る可変ピッチプロペラ・タービンと当該可変ピッチプロペラ・タービンを備える発電帆船を説明する。
図２の発電帆船Ａは複数の硬帆１と、固定軸の可変ピッチプロペラ・タービン２と、モーター・ジェネレータ３と、蓄電装置４とを備えている。蓄電装置４は蓄電池でも良く、電力と水素等の物質との相互変換機構（例えば水電解装置と燃料電池、水素ディーゼル発電機等）を備え電力を物質に変換して貯蔵し又貯蔵した物質を電力に変換する装置でも良い。
図３の発電帆船Ｂは複数の硬帆１１と、モーター・ジェネレータ１３を内蔵したアジマススラスターの一種であるポッド型の可変ピッチプロペラ・タービン１２と、蓄電装置１４とを備えている。蓄電装置１４は蓄電池でも良く、電力と水素等の物質との相互変換機構を備え電力を物質に変換して貯蔵し又貯蔵した物質を電力に変換する装置でも良い。
図２、３と図４（ａ）、（ｂ）とに示すように、可変ピッチプロペラ・タービン２、１２はキャンバーを有する翼型の羽根２１を備えている。
可変ピッチプロペラ・タービン２、１２がプロペラ作動する際には、図４（ａ）に示すように、従来の可変ピッチプロペラと同様、-１０°≦ピッチ角≦+３０°程度の範囲でピッチ角が可変制御される。図４（ａ）はピッチ角が３０°程度で、ロアーキャンバー側翼面に相対水流が当たって船が前進している時の羽根２１を示している。ピッチ角が-１０°程度になると、アッパーキャンバー側翼面に相対水流が当たり船が後進する。前述の如く、羽根の性能は低下するが、後進時なので問題ない。
可変ピッチプロペラ・タービンがタービン作動する際には、図４（ｂ）に示すように、+１５０°程度までピッチ角が可変制御される。図４（ｂ）から分かるように、ロアーキャンバー側翼面に相対水流が当たるので、羽根２１の性能をプロペラ作動時と同程度にすることができ、タービン羽根として十分に機能させることができる。ピッチ角の制御範囲を従来よりも広げるだけで、タービン作動時にもロアーキャンバー側翼面に適正流入角で相対水流を当てることができ、タービン羽根として十分に機能させることができる。
本実施例に係る可変ピッチプロペラ・タービンを備える発電帆船Ａ、Ｂは、強風時に効果的に発電することができる。
本実施例に係る可変ピッチプロペラ・タービンを装備した発電帆船において、可変ピッチプロペラ・タービンを、ポッド型を含むアジマススラスターの可変ピッチプロペラ・タービンにした場合、可変ピッチプロペラ・タービンを３６０°旋回させることができるので、横流れの大きな帆船において、可変ピッチプロペラ・タービンを常に水流に正対させることができる利点が生ずる。
尚、可変ピッチプロペラ・タービンをアジマススラスターの可変ピッチプロペラ・タービンにした場合、可変ピッチプロペラ・タービンを１８０°旋回させれば、ピッチ角の制御範囲を従来程通りとしても、ロアーキャンバー側翼面に相対水流を当てることができるので、良好なタービン作動を実現できる。但しアジマススラスターは大型なので、１８０°旋回させる場合、旋回中に船の挙動が不安定化する可能性はある。 A controllable-pitch propeller-turbine according to an embodiment of the present invention and a power-generating sailboat equipped with the controllable-pitch propeller-turbine will be described.
A power-generating sailing ship A in FIG. The power storage device 4 may be a storage battery, and has a mutual conversion mechanism (for example, a water electrolysis device and a fuel cell, a hydrogen diesel generator, etc.) between electric power and a substance such as hydrogen. A device that converts to electric power may be used.
A power-generating sailboat B in FIG. The power storage device 14 may be a storage battery, or may be a device that has a mutual conversion mechanism between electric power and a substance such as hydrogen, converts electric power into a substance and stores the substance, or converts the stored substance into electric power.
As shown in FIGS. 2, 3 and 4 (a), (b), the variable pitch propeller turbines 2, 12 are provided with airfoil-shaped blades 21 having camber.
When the variable pitch propeller/turbines 2 and 12 operate as propellers, as shown in FIG. is variably controlled. FIG. 4(a) shows the blade 21 when the pitch angle is about 30° and the boat is moving forward with the relative water flow striking the lower camber side blade surface. When the pitch angle becomes about -10°, the relative water flow hits the wing surface on the upper camber side and the ship moves backward. As mentioned above, the performance of the blades is reduced, but this is not a problem since the vehicle is traveling in reverse.
When the variable pitch propeller turbine operates, the pitch angle is variably controlled up to about +150°, as shown in FIG. 4(b). As can be seen from FIG. 4(b), since the relative water flow hits the blade surface on the lower camber side, the performance of the blades 21 can be made approximately the same as when the propeller is operating, and the blades can sufficiently function as turbine blades. By simply widening the control range of the pitch angle, it is possible to apply relative water flow to the blade surface on the lower camber side at an appropriate inflow angle even when the turbine is operating, so that it can be made to function sufficiently as a turbine blade.
Power-generating sailing ships A and B equipped with variable-pitch propeller turbines according to this embodiment can effectively generate power in strong winds.
In the power-generating sailing ship equipped with the variable-pitch propeller/turbine according to the present embodiment, when the variable-pitch propeller/turbine is the variable-pitch propeller/turbine of the azimuth thruster including the pod type, the variable-pitch propeller/turbine is rotated by 360°. Therefore, there is an advantage that the variable pitch propeller/turbine can always face the water current in a sailing ship with a large lateral current.
If the variable pitch propeller/turbine of the azimuth thruster is used as the variable pitch propeller/turbine, if the variable pitch propeller/turbine is rotated by 180°, even if the pitch angle control range is the same as before, the lower camber side blade surface Good turbine operation can be achieved because relative water flow can be applied. However, since the azimuth thrusters are large, there is a possibility that the behavior of the ship will become unstable during the 180° turn.
本発明は、発電帆船に使用する可変ピッチプロペラ・タービンに広く利用可能である。 INDUSTRIAL APPLICABILITY The present invention is widely applicable to variable pitch propeller turbines used in power generating sailboats.
Ａ、Ｂ　発電帆船
１、１１　硬帆
２、１２　可変ピッチプロペラ・タービン
３、１３　モーター・ジェネレータ
４、１４　蓄電装置
２１　羽根 A, B Power-generating sailboats 1, 11 Hard sails 2, 12 Variable pitch propeller turbines 3, 13 Motor generators 4, 14 Power storage device 21 Blades

Claims (3)

  1. キャンバーを有する翼型の羽根を備える可変ピッチプロペラ・タービンであって、ピッチ角の可変制御のみによって、プロペラ作動時にもタービン作動時にもロアーキャンバー側翼面に適正流入角で相対水流が当たることを特徴とする可変ピッチプロペラ・タービン。 A variable-pitch propeller/turbine with camber-shaped blades, characterized in that the relative water flow hits the lower camber side blade surface at an appropriate inflow angle both when the propeller is operating and when the turbine is operating, only by variable control of the pitch angle. and variable pitch propeller turbine.
  2. 請求項１に記載の可変ピッチプロペラ・タービンを備えることを特徴とする発電帆船。 A power-generating sailing ship comprising the variable pitch propeller turbine according to claim 1 .
  3. 可変ピッチプロペラ・タービンはアジマススラスターの可変ピッチプロペラ・タービンであることを特徴とする請求項２に記載の発電帆船。 3. The power-generating sailing vessel according to claim 2, wherein the variable pitch propeller-turbine is an azimuth thruster variable-pitch propeller-turbine.
PCT/JP2021/020305 2021-05-27 2021-05-27 Variable pitch propeller/turbine and power generation sailing ship provided with variable pitch propeller/turbine WO2022249417A1 (en)

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