WO1998057848A1 - Helices carenees contrarotatives - Google Patents

Helices carenees contrarotatives Download PDF

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Publication number
WO1998057848A1
WO1998057848A1 PCT/AU1998/000460 AU9800460W WO9857848A1 WO 1998057848 A1 WO1998057848 A1 WO 1998057848A1 AU 9800460 W AU9800460 W AU 9800460W WO 9857848 A1 WO9857848 A1 WO 9857848A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
blades
drive
sets
assembly
Prior art date
Application number
PCT/AU1998/000460
Other languages
English (en)
Inventor
Donald Alexander Gillies
Original Assignee
Headland Securities Pty. Ltd.
Cameron, Ron
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 Headland Securities Pty. Ltd., Cameron, Ron filed Critical Headland Securities Pty. Ltd.
Priority to AU80042/98A priority Critical patent/AU8004298A/en
Publication of WO1998057848A1 publication Critical patent/WO1998057848A1/fr

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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/24—Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like
    • F01D1/26—Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like traversed by the working-fluid substantially axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
    • B64C11/48—Units of two or more coaxial propellers
    • 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
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/02—Adaptations for driving vehicles, e.g. locomotives
    • F01D15/04—Adaptations for driving vehicles, e.g. locomotives the vehicles being waterborne vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/084—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with two or more pump stages
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • THIS INVENTION relates to assemblies in which coaxial sets of impeller blades are mounted for rotation in an annular passage and a fluid, such as water, is caused to flow through the passage between an inlet and outlet.
  • a fluid such as water
  • Such an assembly will hereinafter be referred to as being "of the type described".
  • Such an assembly may take the form of a gas or water pump or a turbine.
  • the invention is concerned with a propulsion system for use in ships and of the water jet type.
  • the remainder of this specification will concern itself with describing the use of an assembly of the type described, in a water jet propulsion system of a marine vessel.
  • the principle of the invention may be usefully employed in other fields where it is required to transfer energy between a moving stream of a gaseous or liquid fluid, and a rotating shaft.
  • Water jet propulsion systems are often used on vessels required to operate in conditions in which the use of an external propeller poses difficulties.
  • water jet propulsion systems are commonly encountered in connection with high-speed ferries, multi-hull vessels such as catamarans, and small vessels required to operate in very shallow water or in close proximity to bathers.
  • the conventional water jet propulsion system uses an impeller rotated in a section of a duct which extends from a water entry, usually located beneath the vessel and covered with a protective grid, and a water outlet through which a jet of water is discharged at high speed to drive the vessel forwards. All the parts of the propulsion system are accessible from within the hull of the vessel and above the water-line, which makes repair to the impeller rather easier than when an external marine propeller is used.
  • the modern tendency in shipbuilding is towards light-weight, high-speed vessels with shallow draft and this favours the use of water-jet propulsion rather than the conventional propeller system.
  • An object of this invention is to provide an improved assembly of the type described.
  • an assembly of the type described has two sets of impeller blades coaxially arranged on a common shaft which is rigidly connected to one of the sets to rotate therewith, and has the other set of blades connected to the shaft by way of a reversing drive which has at least one double-ended pinion arranged axially parallel to the shaft and meshing at one geared end with a geared surface rotated by the shaft, and meshing at the other end with a geared surface provided on said other set of blades, reversal of the two sets of blades being achieved by arranging for the two geared surfaces to form parts of an internal gear system and an external gear system, respectively.
  • a drive assembly for a water jet propulsion system provides a water duct section of annular form defined between two walls one of which is formed in three axially-spaced parts of which one part is held against rotation, a second part is attached to a drive shaft extending coaxially through the duct section and carries a first set of impeller blades for driving water through the duct section when the shaft is rotated, and a third part carrying a second set of impeller blades which is rotated in the opposite direction to the first set by a reversing gear mounted on the first part and transmitting drive from the drive shaft to the second part.
  • An advantage of the second aspect of the invention is that it enables the momentum of the discharging water jet from the vessel to be increased, with a consequential increase in the vessel's performance.
  • the reversing gear comprises one or more double-ended gear pinions which mesh at one end-portion with a geared surface on the drive shaft, and at the other end-portion with a geared surface on the second part.
  • the meshing gears at the two end-portions of the pinion are respectively arranged as an external gear and as an internal gear (commonly known as a ring gear).
  • the assembly 1 has its right-hand end 2 connected to receive water from submerged water inlet (not shown) located beneath the vessel in which the assembly is mounted, and its left- hand end 3 connected to a jet nozzle (not shown) at the stern of the vessel and from which a high velocity jet of water is discharged to propel the vessel forwards.
  • the assembly 1 provides an annular duct 4 formed between a boss 5 and an outer wa.ll
  • a drive shaft 7 of a marine engine (not shown) extends coaxially through the duct 4.
  • the boss 5 has three coaxially spaced parts 10, 1 1 and 12 and its outside surface provides the inside wall 1 3 of the duct 4.
  • the upstream part 10 of the boss 5 is keyed at 14 to the shaft 7 to rotate therewith, and carries a set of impeller blades 1 5 which rotate in the annular duct 4 when the shaft 7 is rotated.
  • the intermediate part 1 1 of the boss 5 also carries a set of impeller blades 1 6 and is supported by a bearing 17 on the shaft 7.
  • the downstream part 12 of the boss 5 is fixed to the outer wall of the duct by a set of flow-straightening vanes 18 which straighten out the whirling motion of the water leaving the second set of impeller blades 1 6. Bearings 19 support the tail end of the shaft 7.
  • a reversing gear 20 drives the second part 1 1 of the boss 5 in the opposite direction to the shaft 7 and is provided by one or more double-ended pinions 21 preferably symmetrically arranged around the shaft 7 and having their individual axes parallel thereto.
  • the reversing gear 20 is supported by bearings 8 in the downstream part 1 2 of the boss 5 and has at one end a pinion gear 22 which meshes with an externally geared surface 23 on the shaft 7, and at the other end a second pinion gear 24 which meshes with an internal geared surface 25 provided on the second parti 1 of the boss 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Hydraulic Turbines (AREA)

Abstract

L'invention concerne un ensemble d'entraînement (1) pour une hélice carénée pour bateau. Cet ensemble comprend une extrémité (2) d'entrée d'eau, et une extrémité (3) de sortie d'eau, dans un espace annulaire. Deux ensembles (15,16) de pales d'hélices sont placés entre ces extrémités. Ces ensembles entrent en rotation dans des sens directement opposés sous l'action d'un seul arbre d'entraînement (7) qui est directement relié de manière à entraîner en rotation un ensemble de pales (15) dans un sens, et est indirectement relié pour entraîner l'autre ensemble de pales (16) dans le sens opposé. La contre-rotation des ensembles de pales (15, 16) est assurée par des engrenages constitués par des pignons à doubles extrémités (21) entraînés à partir de l'arbre (7) par l'intermédiaire d'un engrenage interne (24, 25). Les pales (18) de redressement d'écoulement permettent de redresser le mouvement de tourbillonnement de l'eau déchargée de l'ensemble et supportent une partie aval de la paroi interne de l'espace annulaire.
PCT/AU1998/000460 1997-06-13 1998-06-12 Helices carenees contrarotatives WO1998057848A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU80042/98A AU8004298A (en) 1997-06-13 1998-06-12 Contra-rotating ducted impellers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO7353A AUPO735397A0 (en) 1997-06-13 1997-06-13 Contra-rotating ducted impellers
AUPO7353 1997-06-13

Publications (1)

Publication Number Publication Date
WO1998057848A1 true WO1998057848A1 (fr) 1998-12-23

Family

ID=3801644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1998/000460 WO1998057848A1 (fr) 1997-06-13 1998-06-12 Helices carenees contrarotatives

Country Status (2)

Country Link
AU (1) AUPO735397A0 (fr)
WO (1) WO1998057848A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005005248A1 (fr) * 2003-07-14 2005-01-20 Propeller Jet Limited Commande d'helice pour unite de propulsion a jet d'eau
DE102012008710A9 (de) 2012-04-25 2014-01-16 Harald von Hacht Gegenläufige Energiewandler
CN104787284A (zh) * 2015-04-08 2015-07-22 浙江海洋学院 子母共轴导管轮螺旋桨
WO2017192086A1 (fr) * 2016-05-02 2017-11-09 Marine Jet Power Ab Dispositif d'entraînement pour motomarine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112776967B (zh) * 2021-02-10 2022-08-30 北京理工大学 一种轴流式双涵道喷水推进器
CN112776968B (zh) * 2021-02-10 2022-08-30 北京理工大学 一种转速可调的双涵道喷水推进泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269111A (en) * 1964-04-01 1966-08-30 Allis Chalmers Mfg Co Power train for jet propelled water craft
GB2240591A (en) * 1989-12-19 1991-08-07 Mtu Muenchen Gmbh Contra-rotating prop-fans
WO1996009954A1 (fr) * 1994-09-26 1996-04-04 Cameron, Ron Unite de rotors contrarotatifs
WO1998029300A1 (fr) * 1996-12-31 1998-07-09 Headland Securities Pty. Ltd. Unite d'helices marines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269111A (en) * 1964-04-01 1966-08-30 Allis Chalmers Mfg Co Power train for jet propelled water craft
GB2240591A (en) * 1989-12-19 1991-08-07 Mtu Muenchen Gmbh Contra-rotating prop-fans
WO1996009954A1 (fr) * 1994-09-26 1996-04-04 Cameron, Ron Unite de rotors contrarotatifs
WO1998029300A1 (fr) * 1996-12-31 1998-07-09 Headland Securities Pty. Ltd. Unite d'helices marines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005005248A1 (fr) * 2003-07-14 2005-01-20 Propeller Jet Limited Commande d'helice pour unite de propulsion a jet d'eau
US7448926B2 (en) 2003-07-14 2008-11-11 Propeller Jet Limited Impeller drive for a water jet propulsion unit
DE102012008710A9 (de) 2012-04-25 2014-01-16 Harald von Hacht Gegenläufige Energiewandler
CN104787284A (zh) * 2015-04-08 2015-07-22 浙江海洋学院 子母共轴导管轮螺旋桨
WO2017192086A1 (fr) * 2016-05-02 2017-11-09 Marine Jet Power Ab Dispositif d'entraînement pour motomarine
US20190135397A1 (en) * 2016-05-02 2019-05-09 Marine Jet Power Ab Driving device for a watercraft
US10556655B2 (en) 2016-05-02 2020-02-11 Marine Jet Power Ab Driving device for a watercraft

Also Published As

Publication number Publication date
AUPO735397A0 (en) 1997-07-10

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