WO2012016283A1 - Turbine à vis et procédé de génération d'électricité - Google Patents

Turbine à vis et procédé de génération d'électricité Download PDF

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Publication number
WO2012016283A1
WO2012016283A1 PCT/AU2011/000983 AU2011000983W WO2012016283A1 WO 2012016283 A1 WO2012016283 A1 WO 2012016283A1 AU 2011000983 W AU2011000983 W AU 2011000983W WO 2012016283 A1 WO2012016283 A1 WO 2012016283A1
Authority
WO
WIPO (PCT)
Prior art keywords
turbine blade
helical turbine
helical
screw
lead
Prior art date
Application number
PCT/AU2011/000983
Other languages
English (en)
Inventor
Gregory Mark Webber
Original Assignee
Gregory Mark Webber
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
Priority claimed from AU2010903459A external-priority patent/AU2010903459A0/en
Application filed by Gregory Mark Webber filed Critical Gregory Mark Webber
Priority to JP2013522057A priority Critical patent/JP2013532796A/ja
Priority to EP11813947.6A priority patent/EP2601407A4/fr
Priority to BR112013002502A priority patent/BR112013002502A2/pt
Priority to AU2011286162A priority patent/AU2011286162B2/en
Priority to CN2011800435722A priority patent/CN103124847A/zh
Publication of WO2012016283A1 publication Critical patent/WO2012016283A1/fr
Priority to US13/757,254 priority patent/US20130177424A1/en

Links

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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/08—Machines or engines of reaction type; Parts or details peculiar thereto with pressure-velocity transformation exclusively in 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/24—Rotors for turbines
    • F05B2240/243—Rotors for turbines of the Archimedes screw type
    • 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

Definitions

  • the present invention relates to a screw turbine and method of power generation which employs same.
  • the invention relates to an Archimedean screw turbine including a helical turbine blade which has a relatively small helix angle and which, in use, advantageously does not require or employ an outer sheath that houses it.
  • turbines include, for example, cross-flow turbines, Kaplan turbines and Archimedean screw turbines.
  • a cylindrical water wheel or runner with a horizontal shaft is provided.
  • the wheel or runner includes a number of blades arranged radially and tangentially. The blade edges may be sharpened to reduce resistance to the flow of water.
  • the water passes through the turbine transversely, or across the turbine blades.
  • the water is admitted at the turbine's edge.
  • the cross-flow turbine is a low-speed machine that is well suited for locations with a low head but high flow.
  • the Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flows and water levels.
  • the Kaplan turbine is an inward flow reaction turbine. As such, the working fluid changes pressure as- it moves through the turbine and gives up its energy.
  • the design combines radial and axial features.
  • the Archimedean screw turbine was developed based on the principle of the Archimedes screw.
  • the Archimedes screw is a type of water pump which has been known for centuries. To pump water from the bottom to the top, the pump needs to be twisted, either manually or through some other mechanism, such as a windmill.
  • the Archimedean screw turbine is basically an inverted Archimedes screw which utilises water to drive the screw and conversion of the energy through a generator.
  • Betz law may similarly apply to water turbines, although it is thought that there are some additional factors in play in this environment. Particularly, it is thought that higher efficiency may be obtained in water turbines compared with wind turbines as water is not compressible. Therefore, some energy may also be imparted in the form of pressure, in addition to the kinetic energy of the water. Even so, there are limits to the efficiency that may be obtained using existing water turbines.
  • the present invention aims to provide an alternative form of water turbine, in the form of an Archimedean screw turbine, which may provide improved efficiency under certain conditions compared with existing examples of water turbines.
  • a screw turbine comprising:
  • a generator associated with the helical turbine blade which converts energy imparted to the helical turbine blade to electricity
  • the diameter of the helical turbine blade is less than the lead of the helical turbine blade and wherein the screw turbine is adapted to permit lateral exchange of fluid in use.
  • the term “lead” is intended to mean the distance between consecutive contours of the helical turbine blade measured parallel to the axis of the blade. This is identified as distance "b" in Figure 1.
  • lateral exchange is intended to mean that fluid that has lost energy (i.e. has slowed) by transfer to rotation of the helical turbine blade is radially emitted from the helical turbine blade such that it is replaced by fluid having a higher energy. For example, if the screw turbine is submerged in moving water, water that has transferred energy to rotation of the helical turbine blade (i.e. has slowed) may be radially emitted and replaced with faster flowing water.
  • the screw turbine of the invention may surprisingly give good results, particularly in applications involving low flow rates. It is thought that the screw turbine of the invention may provide for a proportional increase, or close thereto, in power generated as the length of the helical turbine blade increases. That is, it may be possible to provide turbines that overcome the Betz limit historically considered relevant to such systems.
  • the helical turbine blade of the screw turbine is unsheathed in use to permit lateral exchange of fluid. It is envisaged that this may also be achieved by providing sufficient spacing between the helical turbine blade and an outer sheathing surrounding it, or by providing such an outer sheathing with sufficient venting to allow fluid to be radially emitted.
  • the relationship between the diameter and lead of the helical turbine blade is not particularly limited, with the proviso that the diameter of the helical turbine blade is less than the lead of the helical turbine blade. That is, the "twist" of the helical turbine blade is relatively gentle. In a preferred embodiment, the ratio of diameter and lead of the helical turbine blade is about 1 :8.
  • the helical turbine blade may preferably have a lead angle of from 50-75°, for example of about 60-75°. In certain embodiments, though, the lead angle may be as high as 80°. Such angles, corresponding with a relatively small helix angle, provide blades with a relatively gentle twist.
  • the helical turbine blade is an axleless helix.
  • axleless helix is intended to mean that the blade does not include a central axle around which the blade is mounted (i.e. as with conventional Archimedes screws), but is constituted by a strip of material with twists along its length. This is best represented in Figures 2 and 3.
  • the helical turbine blade may be mounted by any suitable means.
  • the blade may be mounted on a structure that is constructed in a body of water (i.e. secured within the river bed), or may be mounted at the distal end of an arm secured to and extending from, for example, a river bank or shore.
  • the form of mounting will be somewhat dependent on particular environment involved.
  • the blade must be mounted for rotation, for example through a coupling provided with bearings which facilitates rotation of the blade about its longitudinal axis.
  • the helical turbine blade may be coupled to a generator in the usual manner.
  • a drive shaft associated with the blade may be engaged with gearing that engages the generator to produce electricity.
  • gearing it will be preferred that the gearing operate at low revolutions (revs) and high torque. That is, it will be preferred that there be a relatively high gearing ratio. This may be dependent on the particular circumstances of use.
  • a helical turbine blade for a screw turbine comprising an axleless helix, the diameter of the axleless helix being less than the lead of the axleless helix.
  • the ratio of diameter and lead of the helical turbine blade is preferably about 1 :8.
  • the helical turbine blade preferably has a lead angle of from 50-75°, for example of about 60-75°, but may be as high as 80°.
  • the helical turbine blade may be formed from any suitable material, for example steel or comparable material. It may be formed from a composite material.
  • a method of power generation comprising:
  • screw turbine is adapted to permit lateral exchange of water as the helical turbine blade is rotated by the moving water.
  • the screw turbine is submerged unsheathed to permit lateral exchange of water as the helical turbine blade is rotated by the moving water.
  • Other possible embodiments are disclosed above, but are not considered preferable.
  • the energy imparted to the helical turbine blade is converted to electricity through a generator.
  • the energy may be converted to mechanical energy and used for alternative purposes.
  • the diameter of the helical turbine blade is generally less than the lead of the helical turbine blade.
  • the helical turbine blade may comprise an axleless helix, the diameter of the axleless helix being less than the lead of the axleless helix.
  • the ratio of diameter and lead of the helical turbine blade is preferably about 1 :8.
  • the helical turbine blade may have a lead angle of from about 50- 75°, for example of about 60-75°.
  • Figure 1 illustrates a side view of a helical turbine blade
  • Figures 2 and 3 illustrate perspective views of a helical turbine blade.
  • the helical turbine blade takes the form of an axleless helix.
  • the helical turbine blade is constituted by a strip of material, for example steel or other suitable material, which is twisted along its length.
  • the twists are relatively gentle, and therefore the helix angle ⁇ relatively small. Consequently, the lead angle a is relatively large. This is particularly the case compared with conventional screw turbines, the blades of which are generally provided with a much greater degree of raking.
  • the diameter "a” of the helical turbine blade is less than the lead "b" of the blade.
  • the ratio of diameter to lead is just over 1 :8. This configuration in combination with the omission of an axle is thought to facilitate better lateral exchange of fluid in use.
  • the helical turbine blade is submerged in moving water without any sheathing.
  • water will power the blade forcing it to rotate, lose energy and speed and be radially emitted from the blade allowing faster water to take its place. Therefore, as the length of the helical turbine blade increases, it is envisaged that the power generated will proportionally increase.
  • the helical turbine blade and the screw turbine employing it will be useful in slow flowing rivers and other environments with relatively small currents.
  • the screw turbine may be a viable alternative to the hydroelectric schemes proposed for the Amazon River. Taking this example, the invention may provide substantial advantages including the ability to provide power while maintaining tribal land that is threatened by the proposed scheme (i.e. the building of a series of massive dams throughout the Amazon Basin).
  • the helical turbine blade is not rotated quickly or aggressively, and therefore works on relatively low efficiency, due to the fact that the helix angle is small (opposite to a propeller).
  • the medium i.e. water
  • the medium has a chance to act on a relatively large surface area which then increases the total amount of power transferred to the rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

L'invention concerne une turbine à vis comportant une pale de turbine hélicoïdale montée en vue d'une rotation axiale, un support associé à la pale de turbine hélicoïdale et supportant la pale de turbine hélicoïdale en vue d'une rotation axiale, et un générateur associé à la pale de turbine hélicoïdale qui convertit une énergie communiquée à la pale de turbine hélicoïdale en électricité, le diamètre de la pale de turbine hélicoïdale étant inférieur au pas de la pale de turbine hélicoïdale et ladite turbine à vis étant prévue pour permettre un échange latéral de fluide en cours d'utilisation.
PCT/AU2011/000983 2010-08-03 2011-08-03 Turbine à vis et procédé de génération d'électricité WO2012016283A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2013522057A JP2013532796A (ja) 2010-08-03 2011-08-03 スクリュータービン及び発電方法
EP11813947.6A EP2601407A4 (fr) 2010-08-03 2011-08-03 Turbine à vis et procédé de génération d'électricité
BR112013002502A BR112013002502A2 (pt) 2010-08-03 2011-08-03 turbina de parafuso, pá helicoidal de turbina e método de geração de energia
AU2011286162A AU2011286162B2 (en) 2010-08-03 2011-08-03 Screw turbine and method of power generation
CN2011800435722A CN103124847A (zh) 2010-08-03 2011-08-03 螺旋涡轮机及发电方法
US13/757,254 US20130177424A1 (en) 2010-08-03 2013-02-01 Screw turbine and method of power generation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010903459A AU2010903459A0 (en) 2010-08-03 Screw turbine blade
AU2010903459 2010-08-03

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/757,254 Continuation US20130177424A1 (en) 2010-08-03 2013-02-01 Screw turbine and method of power generation

Publications (1)

Publication Number Publication Date
WO2012016283A1 true WO2012016283A1 (fr) 2012-02-09

Family

ID=45558847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/000983 WO2012016283A1 (fr) 2010-08-03 2011-08-03 Turbine à vis et procédé de génération d'électricité

Country Status (8)

Country Link
US (1) US20130177424A1 (fr)
EP (1) EP2601407A4 (fr)
JP (1) JP2013532796A (fr)
CN (1) CN103124847A (fr)
AU (1) AU2011286162B2 (fr)
BR (1) BR112013002502A2 (fr)
CO (1) CO6680682A2 (fr)
WO (1) WO2012016283A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708274A (zh) * 2012-10-02 2014-04-09 住友橡胶工业株式会社 橡胶带输送切断装置
WO2014134994A1 (fr) * 2013-03-04 2014-09-12 Wang Jun Dispositif de génération d'engrenage à vis sans fin sans arbre
US9051918B1 (en) 2011-02-25 2015-06-09 Leidos, Inc. Vertical axis wind turbine with tensile support structure having rigid or collapsible vanes
US9133815B1 (en) 2011-05-11 2015-09-15 Leidos, Inc. Propeller-type double helix turbine apparatus and method
GR1009116B (el) * 2016-05-11 2017-09-14 Ευθαλια Γεωργιου Καλαμπαλικη-Τσιτσιγιαννη Υδροστροβιλος

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AU2012216345A1 (en) * 2012-08-22 2014-03-13 Hartley, Andrew Paul Mr Hubless Screw turbine pump
CN103742342B (zh) * 2014-01-24 2016-08-17 中国水利水电科学研究院 水动能转化装置
MX2016012488A (es) * 2014-03-24 2017-05-08 Pepsico Inc Sistema para monitoreo de hidratacion.
KR101661267B1 (ko) * 2015-04-23 2016-09-29 정민시 무축 스크류 발전 장치
US10072631B2 (en) 2015-06-29 2018-09-11 II Michael John Van Asten Spiral turbine blade having at least one concave compartment that may be rotated by a moving fluid for electrical energy generation
CN110371083B (zh) * 2019-08-21 2021-04-16 德清县诚达金属材料有限公司 一种车载除尘器

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WO2009018666A1 (fr) * 2007-08-08 2009-02-12 Rokeby-Thomas Andrew Byron Rhy Turbine à axe transversal avec bobines hélicoïdales
AU2009206829B2 (en) * 2008-01-24 2011-03-24 Flumill As Turbine arrangement

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Publication number Priority date Publication date Assignee Title
US20070029807A1 (en) * 2005-08-08 2007-02-08 Clayton Kass Methods and systems for generating wind energy
WO2009018666A1 (fr) * 2007-08-08 2009-02-12 Rokeby-Thomas Andrew Byron Rhy Turbine à axe transversal avec bobines hélicoïdales
AU2009206829B2 (en) * 2008-01-24 2011-03-24 Flumill As Turbine arrangement

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9051918B1 (en) 2011-02-25 2015-06-09 Leidos, Inc. Vertical axis wind turbine with tensile support structure having rigid or collapsible vanes
US9133815B1 (en) 2011-05-11 2015-09-15 Leidos, Inc. Propeller-type double helix turbine apparatus and method
CN103708274A (zh) * 2012-10-02 2014-04-09 住友橡胶工业株式会社 橡胶带输送切断装置
CN103708274B (zh) * 2012-10-02 2017-04-12 住友橡胶工业株式会社 橡胶带输送切断装置
WO2014134994A1 (fr) * 2013-03-04 2014-09-12 Wang Jun Dispositif de génération d'engrenage à vis sans fin sans arbre
GR1009116B (el) * 2016-05-11 2017-09-14 Ευθαλια Γεωργιου Καλαμπαλικη-Τσιτσιγιαννη Υδροστροβιλος

Also Published As

Publication number Publication date
CO6680682A2 (es) 2013-05-31
US20130177424A1 (en) 2013-07-11
EP2601407A4 (fr) 2013-10-30
AU2011286162A1 (en) 2013-02-07
EP2601407A1 (fr) 2013-06-12
BR112013002502A2 (pt) 2016-05-31
AU2011286162B2 (en) 2016-08-25
JP2013532796A (ja) 2013-08-19
CN103124847A (zh) 2013-05-29

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