WO2015166813A1 - Hélice et turbine - Google Patents

Hélice et turbine Download PDF

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Publication number
WO2015166813A1
WO2015166813A1 PCT/JP2015/061788 JP2015061788W WO2015166813A1 WO 2015166813 A1 WO2015166813 A1 WO 2015166813A1 JP 2015061788 W JP2015061788 W JP 2015061788W WO 2015166813 A1 WO2015166813 A1 WO 2015166813A1
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WO
WIPO (PCT)
Prior art keywords
rotor blade
axial
protrusion
rotation
flow impeller
Prior art date
Application number
PCT/JP2015/061788
Other languages
English (en)
Japanese (ja)
Inventor
寛 川嶋
Original Assignee
寛 川嶋
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 寛 川嶋 filed Critical 寛 川嶋
Publication of WO2015166813A1 publication Critical patent/WO2015166813A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/18—Non-positive-displacement machines or engines, e.g. steam turbines without stationary working-fluid guiding means
    • F01D1/20—Non-positive-displacement machines or engines, e.g. steam turbines without stationary working-fluid guiding means traversed by the working-fluid substantially axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to an axial flow impeller and a turbine having the axial flow impeller.
  • Patent Document 1 In order to improve the output efficiency of an impeller of a turbine such as wind power generation, optimization of a blade shape, bending of a blade tip, addition of a vane or a vortex generator, and the like have been performed (for example, Patent Document 1). See), and no significant improvement in output efficiency has been realized. Therefore, with the aim of drastically improving output efficiency, a cylindrical diffuser (commonly known as a wind lens) formed so that the opening area increases from the wind inlet to the outlet is installed so as to surround the outer periphery of the impeller. A technique for increasing the output of the impeller 2 to 3 times has been developed (see, for example, Patent Document 2). Further, a radial turbine using a flow of air or water in the radial direction from the center of rotation is known as one that can achieve high-efficiency rotation (see, for example, Patent Document 3).
  • a cylindrical diffuser commonly known as a wind lens
  • the radial turbine as described in Patent Document 3 has a high efficiency rotation because of an increase in impulse and reaction force against the turbine, but it is still necessary to increase the size in order to further increase the output efficiency.
  • the radial flow turbine since the radial flow turbine has a three-dimensional structure, it is limited in size by the installation space. For this reason, there has been a problem that there is a limit in improving the output efficiency.
  • This invention is made paying attention to such a subject, and it aims at providing the axial flow impeller and turbine which can improve output efficiency, without enlarging.
  • the inventor of the present invention pays attention to the fact that in the conventional axial flow type impeller, the radial flow component of the fluid flowing in the radial direction from the rotation center along the impeller rotor blades does not contribute to the rotation of the impeller. As a result of trial and error for a technique for effectively utilizing this radial flow component for the rotation of the impeller, the present invention has been achieved.
  • the axial-flow impeller according to the present invention is disposed around the predetermined central axis at an angular interval, and is provided to be able to rotate around the central axis in response to a fluid flow along the central axis direction.
  • Each projecting portion is characterized in that a cross section along the rotating surface of each rotor blade has an airfoil shape that swells outside the rotation.
  • the flow pushes each rotor blade to rotate each rotor blade.
  • the fluid hitting each rotor blade becomes a flow having a rotational direction component and a radial flow direction component of each rotor blade along the upstream surface of each rotor blade. It flows in a direction inclined from the central axis toward the outside from the side edge to the rear edge. A part of the inclined flow hits each protrusion from the central axis side, flows along each protrusion, and escapes to the rear edge in the rotation direction of each rotor blade.
  • the axial flow impeller according to the present invention can increase the rotation efficiency by using the radial flow component along each rotary blade by providing each protrusion, and without increasing the size, the output Efficiency can be improved. Note that the axial flow impeller according to the present invention may be increased in size to further improve the output efficiency.
  • each projecting portion is provided in an arc shape along the rotation direction of each rotor blade, and thus is not easily subjected to resistance due to the rotation of each rotor blade.
  • Each protrusion is preferably formed from the front side edge to the rear side edge in the rotation direction of each rotary blade over the entire width of each rotary blade.
  • Each protrusion may be formed by attaching an arc-shaped protruding piece to the surface of each rotor blade, or may be formed by raising the surface of each rotor blade in an arc shape.
  • An arcuate groove may be formed. The arcuate raised shape and the cross section of the groove may be, for example, a triangular shape.
  • Each protrusion may be formed by arranging a plurality of protrusions in an arc shape.
  • each protrusion may be provided on the downstream surface of each rotor blade.
  • the radial flow component along the downstream surface of each rotor blade can also be used, and the rotational efficiency of each rotor blade can be further increased.
  • each of the rotor blades may be any propeller or screw as long as it is an axial flow type, and may be a conventional axial flow type impeller.
  • each protrusion is inclined forward with respect to the rotation direction of each rotor blade.
  • each protrusion has an airfoil shape in which the cross section along the rotation surface of each rotor blade swells outside the rotation, and therefore flows on the surface of each rotor blade. The fluid generates lift at each protrusion toward the outside of the rotation.
  • a rotational direction component of each rotor blade can be obtained from the lift force, so that the rotation efficiency of each rotor blade can be further increased.
  • by tilting each protrusion forward resistance due to rotation of each rotor blade can be made more difficult to receive, and rotation efficiency can be increased.
  • the turbine according to the present invention includes the axial-flow impeller according to the present invention. Since the turbine according to the present invention includes the axial flow impeller according to the present invention, the output efficiency can be improved without increasing the size.
  • the turbine according to the present invention may be any turbine as long as it can convert the kinetic energy of the fluid into rotational energy, such as a steam turbine, a gas turbine, a water turbine for power generation, a wind power generator, and the like.
  • FIG. 1 A) Front view which shows the axial-flow impeller of embodiment of this invention, (b) The cutting part end view which passes along the center axis
  • FIG. 6 is a cut-part end view, (c) a front view showing a head and one rotary blade of a second modification of the rotary blade, and (b) a cut-part end view passing through the central axis and the center of the rotary blade.
  • the front view which shows the head and one rotary blade of the 3rd modification of the (a) rotary blade of the axial-flow impeller of embodiment of this invention, (b) It passes along the center axis
  • the axial flow impeller 10 includes a head 11, a plurality of rotating blades 12, and a plurality of protrusions 13.
  • the head 11 has a conical shape and is provided so as to be rotatable about its central axis.
  • Each rotary blade 12 has an elongated plate shape, and is arranged around the head 11 at equiangular intervals.
  • Each rotary blade 12 extends from the head 11 in the radial direction, and is attached so that one surface faces the front side of the head 11.
  • Each rotor blade 12 is provided so as to be rotatable around the central axis of the head 11 and inclined with respect to the central axis direction of the head 11 when receiving a fluid flow along the central axis direction of the head 11. .
  • Each protrusion 13 is plate-shaped, and is provided on each rotary blade 12 by the same number with a predetermined interval. Each protrusion 13 is provided on the upstream surface of each rotor blade 12 so as to protrude toward the upstream side. Each protrusion 13 is provided vertically upright with respect to the surface of each rotor blade 12. Each protrusion 13 is provided in a circular arc shape along the rotational direction of each rotary blade 12 over the entire width of each rotary blade 12 from one side edge to the other side edge of each rotary blade 12. In the specific example shown in FIG. 1, the rotor blades 12 are composed of six sheets, and five protrusions 13 are provided on each rotor blade 12.
  • each rotor blade 12 rotates in the direction of arrow A, and fluid flows in the direction of arrow B on the surface of each rotor blade 12.
  • the axial flow impeller 10 can increase the rotation efficiency by using the radial flow components along the rotary blades 12 by providing the protrusions 13, and can increase the output efficiency without increasing the size. Can be improved. Further, even when the axial flow impeller 10 is tilted backward by the downwind method or when coning occurs in which each rotor blade 12 is inclined downstream due to the pressure of the fluid, the radial flow component is increased by each.
  • the protrusion 13 can be used effectively, and the rotation efficiency can be increased.
  • the axial flow impeller 10 can effectively utilize the radial flow component that increases due to the disk effect by the protrusions 13 even when the rotary blades 12 rotate at a high speed, thereby improving the rotation efficiency. it can.
  • the conventional impeller has little contribution to rotation at the end of each rotary blade on the central axis side, but the axial impeller 10 also protrudes from the end of each rotary blade 12 on the central axis side.
  • the contribution to the rotation by the part can be increased and the rotation efficiency can be increased.
  • the axial flow impeller 10 is less susceptible to resistance due to the rotation of each rotary blade 12 because each protrusion 13 is provided in an arc shape along the rotation direction of each rotary blade 12.
  • the axial-flow impeller 10 can be used as an impeller of a turbine such as a steam turbine, a gas turbine, a power generation water turbine, or a wind power generator. Thereby, output efficiency can be improved, without enlarging a turbine.
  • each protrusion 13 may be provided on the downstream surface of each rotor blade 12.
  • the radial flow component along the downstream surface of each rotor blade 12 can also be used, and the rotational efficiency of each rotor blade 12 can be further increased.
  • the axial flow impeller 10 is provided with alternately a raised portion 21 in which the surface of each rotary blade 12 has an arc shape and an arc-shaped groove 22. A shape may be formed, and each raised portion 21 may form each protruding portion 13. The cross sections of the raised portion 21 and the groove 22 are triangular.
  • each protrusion 13 may be formed by arranging a plurality of protrusions 23 in an arc shape.
  • each protrusion 13 has an airfoil shape in which the cross section along the rotation surface of each rotary blade 12 swells outside the rotation, and the rotation direction of each rotary blade 12 is May be tilted forward.
  • the fluid flows along the surface of each rotary blade 12 along each airfoil-shaped protrusion 13, so that lift is generated outward of rotation at each protrusion 13. F is generated.
  • the rotational direction component of each rotor blade 12 is obtained from the lift F, and the rotational efficiency of each rotor blade 12 can be further increased.
  • each rotor blade 12 is tilted forward, it is possible to further reduce resistance to the fluid (arrow B) flowing obliquely on the surface of each rotor blade 12 and to increase the rotation efficiency.
  • Table 1 The experimental results are shown in Table 1.
  • each value of the impeller without the projecting portion 13 is set to 1.00, and the result of the axial flow impeller 10 is shown.
  • the output is weight ⁇ number of rotations.
  • the axial flow impeller 10 having the projecting portion 13 has an output efficiency improved by 130% or more compared to the conventional impeller without the projecting portion 13.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydraulic Turbines (AREA)
  • Wind Motors (AREA)

Abstract

Le problème décrit par la présente invention est de fournir une hélice et une turbine au moyen desquelles il est possible d'améliorer le rendement de sortie sans augmenter la taille de celles-ci. La solution selon l'invention porte sur une pluralité de pales rotatives qui sont disposées à intervalles angulaires égaux autour d'une tête, et qui sont disposées de façon à être aptes à tourner autour de l'axe central de la tête lors de la réception de l'écoulement d'un fluide dans la direction de l'axe central de la tête. Une pluralité de saillies sont prévues à un intervalle prescrit sur chaque pale rotative, le même nombre de saillies étant prévu sur toutes les pales rotatives. Chaque saillie fait saillie dans la direction amont sur la surface du côté amont de chaque pale rotative, et est disposée de manière à présenter une forme courbe dans la direction de rotation de chaque pale rotative.
PCT/JP2015/061788 2014-04-28 2015-04-17 Hélice et turbine WO2015166813A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-093223 2014-04-28
JP2014093223A JP5670591B1 (ja) 2014-04-28 2014-04-28 軸流羽根車およびタービン

Publications (1)

Publication Number Publication Date
WO2015166813A1 true WO2015166813A1 (fr) 2015-11-05

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PCT/JP2015/061788 WO2015166813A1 (fr) 2014-04-28 2015-04-17 Hélice et turbine

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JP (1) JP5670591B1 (fr)
WO (1) WO2015166813A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3535489B1 (fr) * 2016-11-04 2022-07-27 Vestas Wind Systems A/S Pale d'éolienne avec barrière de couche limite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017067059A (ja) * 2015-10-03 2017-04-06 遊生 井手 風車の翼

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137298A (ja) * 1992-10-23 1994-05-17 Aisin Chem Co Ltd ファンのブレード構造
JPH09100774A (ja) * 1995-10-06 1997-04-15 Ishikawajima Harima Heavy Ind Co Ltd 風力発電装置用ブレード
JPH11201021A (ja) * 1998-01-06 1999-07-27 Mitsubishi Heavy Ind Ltd 風車翼
DE102005049794A1 (de) * 2005-10-18 2007-04-19 Eew Maschinenbau Gmbh Propeller
JP4097020B2 (ja) * 2002-07-04 2008-06-04 幸雄 中田 回転翼
WO2013120946A1 (fr) * 2012-02-17 2013-08-22 Lm Wp Patent Holding A/S Pale de turbine éolienne ayant une cloison de décrochage ou un déflecteur de flux profilés

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137298A (ja) * 1992-10-23 1994-05-17 Aisin Chem Co Ltd ファンのブレード構造
JPH09100774A (ja) * 1995-10-06 1997-04-15 Ishikawajima Harima Heavy Ind Co Ltd 風力発電装置用ブレード
JPH11201021A (ja) * 1998-01-06 1999-07-27 Mitsubishi Heavy Ind Ltd 風車翼
JP4097020B2 (ja) * 2002-07-04 2008-06-04 幸雄 中田 回転翼
DE102005049794A1 (de) * 2005-10-18 2007-04-19 Eew Maschinenbau Gmbh Propeller
WO2013120946A1 (fr) * 2012-02-17 2013-08-22 Lm Wp Patent Holding A/S Pale de turbine éolienne ayant une cloison de décrochage ou un déflecteur de flux profilés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3535489B1 (fr) * 2016-11-04 2022-07-27 Vestas Wind Systems A/S Pale d'éolienne avec barrière de couche limite

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Publication number Publication date
JP5670591B1 (ja) 2015-02-18
JP2015209831A (ja) 2015-11-24

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