DE19717175A1 - Water jet propulsion for a watercraft - Google Patents

Water jet propulsion for a watercraft

Info

Publication number
DE19717175A1
DE19717175A1 DE1997117175 DE19717175A DE19717175A1 DE 19717175 A1 DE19717175 A1 DE 19717175A1 DE 1997117175 DE1997117175 DE 1997117175 DE 19717175 A DE19717175 A DE 19717175A DE 19717175 A1 DE19717175 A1 DE 19717175A1
Authority
DE
Germany
Prior art keywords
impeller
housing
water jet
gear
wheel
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.)
Withdrawn
Application number
DE1997117175
Other languages
German (de)
Inventor
Ulrich Sturmhoefel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Hydro Holding GmbH and Co KG
Original Assignee
Voith Hydro GmbH and Co KG
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 Voith Hydro GmbH and Co KG filed Critical Voith Hydro GmbH and Co KG
Priority to DE1997117175 priority Critical patent/DE19717175A1/en
Priority to PCT/EP1998/002156 priority patent/WO1998047760A1/en
Priority to EP98922700A priority patent/EP0975517A1/en
Priority to AU75247/98A priority patent/AU7524798A/en
Publication of DE19717175A1 publication Critical patent/DE19717175A1/en
Priority to NO994933A priority patent/NO994933L/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • 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
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
    • B63H5/10—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller of coaxial type, e.g. of counter-rotative type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H2023/005—Transmitting power from propulsion power plant to propulsive elements using a drive acting on the periphery of a rotating propulsive element, e.g. on a dented circumferential ring on a propeller, or a propeller acting as rotor of an electric motor

Landscapes

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

Abstract

The invention relates to a waterjet propulsion device for watercraft, comprising a housing (1) to which an inlet pipe is connected upstream and an outlet nozzle (3) downstream. Two impellers (4.1 and 4.2) are arranged coaxially to each other inside the housing. Each impeller is surrounded by a sprocket wheel (4.1.1 and 4.2.1) which is connected in a non-rotational manner to its corresponding pump rotor. A toothed wheel (5.3 and 5.4) is assigned to each sprocket wheel. The two toothed wheels drive the two sprocket wheels rotating in opposite directions. The number of teeth on the toothed wheels and sprocket wheels is chosen in such a way that the one impeller turns more slowly than the other impeller. The invention also provides for an external mechanical drive mechanism (5) comprising a single shaft (5.1) on which two pinions (5.2, 5.4) are mounted in a non-rotational manner. The one pinion (5.2) engages an intermediate wheel (5.3) which in turn engages the sprocket wheel (4.1.1) of the first impeller (4.1), while the second pinion (5.4) directly engages the sprocket wheel (4.2.1) of the second impeller (4.2).

Description

Die Erfindung betrifft einen Wasserstrahlantrieb für Wasserfahrzeuge.The invention relates to a water jet drive for watercraft.

Wasserstrahlantriebe sind heute gebräuchliche Propulsionssysteme, vor allem für schnelle Wasserfahrzeuge verschiedenster Kategorie und Anwendung.Water jet engines are common propulsion systems today, especially for fast watercraft in various categories and applications.

EP 0 657 348 A zeigt in Fig. 1 das Prinzip eines gebräuchlichen Wasserstrahlantriebes. In einem Gehäuse wird ein Pumpenrad oder Impeller gelagert und über eine koaxiale Welle angetrieben. Zur Verminderung der Drallverluste im Impeller wird diesem im Allgemeinen ein Leitapparat im Zulauf vorgeschaltet.EP 0 657 348 A shows the principle of a conventional water jet drive in FIG. 1. A pump wheel or impeller is mounted in a housing and driven via a coaxial shaft. In order to reduce the twist losses in the impeller, this is generally preceded by a guide device in the inlet.

Welle und Leitapparat sind widerstandsbehaftete Störanhänge.Shaft and diffuser are resistive interference attachments.

Zwischen Impeller und Gehäusewand treten Spaltverluste auf und es besteht die Gefahr von Spaltkavitation. Fremdkörper können sich zwischen Impeller und Gehäusewand verkeilen, was zu Blockierungen und Beschädigungen führen kann.Gap losses occur between the impeller and the housing wall and there is the danger of crevice cavitation. Foreign bodies can get between impellers and housing wall wedges, resulting in blockages and damage can lead.

Die Montage eines Impellers bei schwimmendem Fahrzeug ist nur schwer realisierbar.It is difficult to assemble an impeller when the vehicle is floating realizable.

Das genannte Dokument zeigt in den übrigen Figuren weitere Ausführungsformen, bei denen der Antrieb durch einen am Gehäuseumfang angeordneten Elektromotor erfolgt und der Impeller als Rotor des Elektromotors fungiert. Hierbei entfällt zwar die konzentrische Welle, es ist aber nach wie vor ein Leitapparat notwendig. The document mentioned shows more in the remaining figures Embodiments in which the drive by a on the housing arranged electric motor and the impeller as the rotor of the Electric motor acts. The concentric wave is omitted here, but it is a guiding apparatus is still necessary.  

Der Erfindung liegt die Aufgabe zugrunde, einen Wasserstrahlantrieb für ein Wasserfahrzeug zu schaffen, bei dem eine innenliegende Welle und ein Leitapparat vermieden werden, die Drallverluste aufgehoben werden und bei dem Spaltverluste zwischen Gehäusewand und Impeller sowie Nabenverluste vermieden werden.The invention has for its object a water jet drive for a To create watercraft with an internal shaft and a Leitapparat be avoided, the swirl losses are canceled and at the gap loss between the housing wall and impeller and hub loss be avoided.

Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst. Demgemäß werden zwei Impeller vorgesehen, die in einem Gehäuse koaxial zueinander angeordnet und in entgegengesetztem Drehsinn antreibbar sind. Damit entfällt die Notwendigkeit eines Leitapparates. Der sonst auftretende Drall wird durch die gegenläufigen Impeller aufgehoben. Es gibt keine störende Antriebswelle im Zulaufkanal. Ferner stellen gemäß der Erfindung Pumpenteil sowie Untersetzungs- und Umkehrgetriebe eine gemeinsame kompakte Einheit dar. Diese Einheit kann bei schwimmendem Schiff ein- und ausgebaut werden.This object is solved by the features of claim 1. Accordingly two impellers are provided, which are coaxial to one another in a housing arranged and driven in the opposite direction. This eliminates the need for a guiding system. The otherwise occurring swirl is through the opposing impellers are canceled. There is no disruptive drive shaft in the inlet channel. Furthermore, according to the invention, pump part and Reduction and reversing gears form a common compact unit. This unit can be installed and removed when the ship is floating.

Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:The invention is explained in more detail with reference to the drawing. In it is in detail shown the following:

Fig. 1 zeigt in einem Längsschnitt einen Strahlantrieb mit zwei Impellern. Fig. 1 shows a longitudinal section of a jet drive with two impellers.

Fig. 2 zeigt einen Schnitt durch den Gegenstand von Fig. 1 in der Schnittebene A-B. Fig. 2 shows a section through the object of Fig. 1 in the section plane AB.

Fig. 3 zeigt einen Schnitt durch den Gegenstand von Fig. 1 in der Schnittebene C-D. Fig. 3 shows a section through the object of Fig. 1 in the section plane CD.

Der dargestellte Wasserstrahlantrieb ist für Wasserfahrzeuge aller Art vorgesehen, bei dem dieses Propulsionsystem generell Vorteile gegenüber anderen Propulsionssystemen aufweist. Er umfaßt ein Gehäuse (1), dem ein Zulaufkanal (2) vorgeschaltet und eine Austrittsdüse (3) nachgeschaltet ist. Das Gehäuse nimmt zwei hintereinander koaxial angeordnete Pumpenimpeller (4.1) und (4.2) auf. Jeder Impeller ist von einem Zahnkranz (4.1.1) bzw. (4.2.1) umschlossen und mit diesem drehfest verbunden. Man erkennt ferner die Beschaufelung der Impeller (4.1.2) des einen Impellers (4.1) sowie (4.2.2) des anderen (4.2). Wie man sieht, sind die Beschaufelungen (4.1.2) und (4.2.2) zueinander gegenläufig. Im Gehäuse 1 ist ferner der externe mechanische Antrieb (5) angeordnet. Dieser umfaßt eine gemeinsame Antriebswelle (5.1), auf der zwei Antriebszahnräder drehsteif verbunden sind. Zahnrad (5.2) kämmt mit einem Zwischenzahnrad (5.3), das wiederum mit dem Zahnkranz (4.1.1) des ersten Impellers (4.1) kämmt. Zahnrad (5.4) kämmt dagegen mit Zahnkranz (4.2.1) des zweiten Impellers (4.2). Auf diese Weise kommt ein unterschiedlicher Drehsinn beider Impeller zustande und zusätzlich hält Impeller (4.2) eine höhere Drehzahl als Impeller (4.1), um der durch Impeller (4.1) induzierten Strömungsgeschwindigkeit Rechnung zu tragen.The water jet drive shown is intended for all types of watercraft, in which this propulsion system generally has advantages over other propulsion systems. It comprises a housing ( 1 ) which is preceded by an inlet channel ( 2 ) and an outlet nozzle ( 3 ). The housing accommodates two pump impellers ( 4.1 ) and ( 4.2 ) arranged coaxially one behind the other. Each impeller is enclosed by a ring gear ( 4.1.1 ) or ( 4.2.1 ) and connected to it in a rotationally fixed manner. One can also see the blading of the impellers ( 4.1.2 ) of one impeller ( 4.1 ) and ( 4.2.2 ) of the other ( 4.2 ). As you can see, the blades ( 4.1.2 ) and ( 4.2.2 ) are opposite to each other. The external mechanical drive ( 5 ) is also arranged in the housing 1 . This comprises a common drive shaft ( 5.1 ) on which two drive gears are connected in a torsionally rigid manner. Gear ( 5.2 ) meshes with an intermediate gear ( 5.3 ), which in turn meshes with the ring gear ( 4.1.1 ) of the first impeller ( 4.1 ). Gear wheel ( 5.4 ), on the other hand, meshes with ring gear ( 4.2.1 ) of the second impeller ( 4.2 ). In this way, the two directions of rotation of the two impellers come about and, in addition, impeller ( 4.2 ) maintains a higher speed than impeller ( 4.1 ) in order to take into account the flow velocity induced by impeller ( 4.1 ).

Gehäuse (1) ist über Flanschverbindungen mit Teil (2) und (3) verbunden und kann somit als kompakte Einheit von außen montiert werden.Housing ( 1 ) is connected to parts ( 2 ) and ( 3 ) via flange connections and can therefore be mounted as a compact unit from the outside.

Claims (4)

1. Wasserstrahlantrieb für Wasserfahrzeuge;
  • 1.1 mit einem Gehäuse (1), dem ein Zulaufkanal (2) vorgeschaltet und eine Austrittsdüse (3) nachgeschaltet ist;
  • 1.2 im Gehäuse (1) sind zwei zueinander koaxiale Impeller (4.1) und (4.2) gelagert;
  • 1.3 jeder Impeller (4.1, 4.2) ist von einem Zahnkranz (4.1.1 bzw. 4.2.1) umschlossen, der mit dem betreffenden Pumpenlaufrad drehfest verbunden ist;
  • 1.4 jedem Zahnkranz (4.1.1 bzw. 4.1.2) ist ein Zahnrad (5.3 bzw. 5.4) zugeordnet;
  • 1.5 die beiden Zahnräder (5.3 bzw. 5.4) treiben die beiden Zahnkränze (4.1.1 bzw. 4.2.1) mit gegenläufigem Drehsinn an.
1. Water jet propulsion for water vehicles;
  • 1.1 with a housing ( 1 ), an inlet channel ( 2 ) upstream and an outlet nozzle ( 3 ) is connected downstream;
  • 1.2 two coaxial impellers ( 4.1 ) and ( 4.2 ) are mounted in the housing ( 1 );
  • 1.3 each impeller ( 4.1 , 4.2 ) is enclosed by a ring gear ( 4.1.1 or 4.2.1 ) which is connected to the pump impeller in question in a rotationally fixed manner;
  • 1.4 a gear wheel ( 5.3 or 5.4 ) is assigned to each ring gear ( 4.1.1 or 4.1.2 );
  • 1.5 the two gears ( 5.3 and 5.4 ) drive the two ring gears ( 4.1.1 and 4.2.1 ) with opposite directions of rotation.
2. Wasserstrahlantrieb nach Anspruch 1, dadurch gekennzeichnet, daß die Zähnezahlen der Zahnräder bzw. der Zahnkränze derart gewählt sind, daß der angeströmte Impeller (4.1) langsamer umläuft, als der den Wasserstrahl abgebende Impeller (4.2).2. Water jet drive according to claim 1, characterized in that the number of teeth of the gears or the sprockets are selected such that the impeller ( 4.1 ) flows more slowly than the impeller emitting the water jet ( 4.2 ). 3. Wasserstrahlantrieb nach Anspruch 1 oder 2, gekennzeichnet durch die folgenden Merkmale:
  • 3.1 es ist ein externer mechanischer Antrieb (5) vorgesehen;
  • 3.2 der mechanische Antrieb (5) umfaßt eine Welle (5.1), der zwei Ritzel (5.2, 5.4) drehsteif aufgesetzt sind;
  • 3.3 das eine Zahnrad (5.2) kämmt mit einem Zwischenrad (5.3), das seinerseits mit dem Zahnkranz (4.1.1) des ersten Impellerrades (4.1) kämmt, während das zweite Zahnrad (5.4) unmittelbar mit dem Zahnkranz (4.2.1) des zweiten Impellers (4.2) kämmt.
3. Water jet drive according to claim 1 or 2, characterized by the following features:
  • 3.1 an external mechanical drive ( 5 ) is provided;
  • 3.2 the mechanical drive ( 5 ) comprises a shaft ( 5.1 ) on which two pinions ( 5.2 , 5.4 ) are mounted in a torsionally rigid manner;
  • 3.3 one gear ( 5.2 ) meshes with an intermediate gear ( 5.3 ), which in turn meshes with the ring gear ( 4.1.1 ) of the first impeller wheel ( 4.1 ), while the second gear ( 5.4 ) directly with the ring gear ( 4.2.1 ) of the second impeller ( 4.2 ) combs.
4. Wasserstrahlantrieb nach Anspruch 3, gekennzeichnet durch folgende Merkmale:
  • 4.1 das Gehäuse (1) umschließt außer den beiden Impellern (4.1 und 4.2) ein Untersetzungs- und Umkehrgetriebe;
  • 4.2 das Gehäuse (1) ist mittels Flanschverbindungen an den zu Laufkanal (2) und die Austrittsdüse (3) angeschlossen.
4. Water jet drive according to claim 3, characterized by the following features:
  • 4.1 the housing ( 1 ) encloses a reduction and reversing gear in addition to the two impellers ( 4.1 and 4.2 );
  • 4.2 the housing ( 1 ) is connected by means of flange connections to the running channel ( 2 ) and the outlet nozzle ( 3 ).
DE1997117175 1997-04-24 1997-04-24 Water jet propulsion for a watercraft Withdrawn DE19717175A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1997117175 DE19717175A1 (en) 1997-04-24 1997-04-24 Water jet propulsion for a watercraft
PCT/EP1998/002156 WO1998047760A1 (en) 1997-04-24 1998-04-14 Composite material and a method for the production thereof
EP98922700A EP0975517A1 (en) 1997-04-24 1998-04-14 Waterjet propulsion for watercraft
AU75247/98A AU7524798A (en) 1997-04-24 1998-04-14 Waterjet propulsion for watercraft
NO994933A NO994933L (en) 1997-04-24 1999-10-08 Water jet propulsion for seagoing vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997117175 DE19717175A1 (en) 1997-04-24 1997-04-24 Water jet propulsion for a watercraft

Publications (1)

Publication Number Publication Date
DE19717175A1 true DE19717175A1 (en) 1998-10-29

Family

ID=7827514

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997117175 Withdrawn DE19717175A1 (en) 1997-04-24 1997-04-24 Water jet propulsion for a watercraft

Country Status (5)

Country Link
EP (1) EP0975517A1 (en)
AU (1) AU7524798A (en)
DE (1) DE19717175A1 (en)
NO (1) NO994933L (en)
WO (1) WO1998047760A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009144164A1 (en) * 2008-05-27 2009-12-03 Siemens Aktiengesellschaft Turbo-machine having at least two counter-rotatable rotors and having mechanical torque compensation
DE102009040471A1 (en) * 2009-09-08 2011-03-10 Tutech Innovation Gmbh Mechanically propelled ship propulsor with high efficiency
CN102295138A (en) * 2011-09-22 2011-12-28 长沙中联重工科技发展股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant
CN106958464A (en) * 2017-05-09 2017-07-18 黄革远 Multistage turbine propeller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ526666A (en) 2003-07-14 2004-11-26 Propeller Jet Ltd Impeller drive for a jet propulsion unit

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US3441088A (en) * 1966-08-25 1969-04-29 Felix Levy Hydraulic propeller by compound reaction
US3487805A (en) * 1966-12-22 1970-01-06 Satterthwaite James G Peripheral journal propeller drive
EP0657348A1 (en) * 1993-12-09 1995-06-14 Westinghouse Electric Corporation Water jet propulsor

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US2656809A (en) * 1951-06-25 1953-10-27 James W Frasure Combination rudder and propulsion device
US3977353A (en) * 1974-07-31 1976-08-31 James Toyama Jet powered marine propulsion unit
DE3006653A1 (en) * 1980-02-22 1981-09-10 Josef 6600 Saarbrücken Gulaif Ducted propeller for ship - has pipe driven via duct-encircling toothed wheel and bearings carrying duct ends housed in pipes in bearing block
US4887982A (en) * 1988-10-04 1989-12-19 Brunswick Corporation Gear driven marine propulsion system with steerable gearcase and dual counterrotating propellers
DE3912910A1 (en) * 1989-04-20 1990-10-25 Gabriel Reinhard Jet-propulsion unit for boat or aircraft - comprises rotary jet pipe with internal auger or blades forming driving members
DE3942672A1 (en) * 1989-12-22 1991-07-04 Merz Josef Marine craft jet drive - has pump with two rotors rotating in opposite directions
US5185545A (en) * 1990-08-23 1993-02-09 Westinghouse Electric Corp. Dual propeller shock resistant submersible propulsor unit
AU676209B2 (en) * 1992-10-13 1997-03-06 Barry John Davies Water jet propulsion unit for use in a jet boat
SE501365C2 (en) * 1993-06-03 1995-01-23 Svetssystem Ab Water jet for high speed boat
US5480330A (en) * 1994-10-04 1996-01-02 Outboard Marine Corporation Marine propulsion pump with two counter rotating impellers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441088A (en) * 1966-08-25 1969-04-29 Felix Levy Hydraulic propeller by compound reaction
US3487805A (en) * 1966-12-22 1970-01-06 Satterthwaite James G Peripheral journal propeller drive
EP0657348A1 (en) * 1993-12-09 1995-06-14 Westinghouse Electric Corporation Water jet propulsor
US5490768A (en) * 1993-12-09 1996-02-13 Westinghouse Electric Corporation Water jet propulsor powered by an integral canned electric motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009144164A1 (en) * 2008-05-27 2009-12-03 Siemens Aktiengesellschaft Turbo-machine having at least two counter-rotatable rotors and having mechanical torque compensation
US8487466B2 (en) 2008-05-27 2013-07-16 Siemens Aktiengesellschaft Turbo-machine having at least two counter-rotatable rotors and having mechanical torque compensation
DE102009040471A1 (en) * 2009-09-08 2011-03-10 Tutech Innovation Gmbh Mechanically propelled ship propulsor with high efficiency
DE102009040471B4 (en) * 2009-09-08 2016-07-21 Tutech Innovation Gmbh Mechanically propelled ship propulsor with high efficiency
CN102295138A (en) * 2011-09-22 2011-12-28 长沙中联重工科技发展股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant
CN102295138B (en) * 2011-09-22 2013-04-03 中联重科股份有限公司 Sprocket shaft mounting structure of lifter and lifter of asphalt mixing plant
CN106958464A (en) * 2017-05-09 2017-07-18 黄革远 Multistage turbine propeller
CN106958464B (en) * 2017-05-09 2018-05-29 黄革远 Multistage turbine propeller

Also Published As

Publication number Publication date
AU7524798A (en) 1998-11-13
NO994933D0 (en) 1999-10-08
WO1998047760A1 (en) 1998-10-29
NO994933L (en) 1999-10-08
EP0975517A1 (en) 2000-02-02

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