EP0612657B1 - Dispositif de propulsion par jet d'eau - Google Patents

Dispositif de propulsion par jet d'eau Download PDF

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Publication number
EP0612657B1
EP0612657B1 EP94102485A EP94102485A EP0612657B1 EP 0612657 B1 EP0612657 B1 EP 0612657B1 EP 94102485 A EP94102485 A EP 94102485A EP 94102485 A EP94102485 A EP 94102485A EP 0612657 B1 EP0612657 B1 EP 0612657B1
Authority
EP
European Patent Office
Prior art keywords
water
impeller
housing
jet drive
drive according
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.)
Expired - Lifetime
Application number
EP94102485A
Other languages
German (de)
English (en)
Other versions
EP0612657A1 (fr
Inventor
Stefan Dipl.-Ing. Kaul
Stefan Dipl.-Ing. Huth
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.)
Schottel GmbH and Co KG
Original Assignee
Schottel 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 Schottel GmbH and Co KG filed Critical Schottel GmbH and Co KG
Publication of EP0612657A1 publication Critical patent/EP0612657A1/fr
Application granted granted Critical
Publication of EP0612657B1 publication Critical patent/EP0612657B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/101—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening
    • B63H11/102—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means for deflecting jet into a propulsive direction substantially parallel to the plane of the pump outlet opening the inlet opening and the outlet opening of the pump being substantially coplanar

Definitions

  • the invention relates to a water jet drive according to the preamble of claim 1.
  • the guide device is a fixed blade ring, in which the blades are arranged in such a way that flow energy is largely converted into pressure energy in the blade channels or the guide device.
  • the drive device which is preferably arranged behind the plane of the flat ship's bottom, sucks in water from the area below the ship's bottom, the sucked-in water is accelerated in the impeller, so that it has a high kinetic energy at the outlet of the impeller, which converts into pressure energy at the outlet from the diffuser is, after exiting from the guide apparatus and in the pressure housing, therefore has a high pressure energy and, because of this high pressure energy, can emerge from the pressure housing at any point in the pressure housing and can enter outlet nozzles which determine the direction of exit of the water jet causing the propulsion of the ship.
  • the advantage of this solution is the free choice for the arrangement of the outlet nozzles, the disadvantage is a relatively complex construction (DE-A-4021340).
  • the object of the present invention is to design a generic drive device such that it is structurally simpler and lighter than the known solution.
  • the essential component groups of the water jet drive according to the invention are the pot-shaped pump housing 1, the semi-axially running blade or flow channels between its blades 2 forming pump impeller 3, the drive 4 of the impeller, the guide device 5 and a lower cover plate 6, in the middle of which the water inlet 7, a central outlet nozzle 8 and two side outlet nozzles 9, 10 are integrated.
  • "Semi-axially bladed” means that the impeller 3 is axially flowed against and the water provided with flow energy leaves the impeller and enters the diffuser at an angle that is less than 90 ° with respect to the impeller axis of rotation.
  • the drive 4 can be conventional, so that its description can be omitted.
  • a relatively wide-meshed inlet grille 11 can be arranged in the inlet 7, which can be relatively wide-meshed because the drive is less sensitive to foreign particles carried in the water than a drive with a bladed guide device due to the lack of a bladed guide device.
  • the diffuser is, according to one embodiment, an unbladed ring diffuser with an exit angle to the impeller axis between approximately 160 and 200 °, preferably 180 °.
  • the ring diffuser or diffuser 5 is formed directly on the outside by the housing outer wall 12 and on the inside by the impeller housing 13. It is rotationally symmetrical and has no internals. It ensures long guidance to the outlet nozzles 8, 9 and 10.
  • the inlet is asymmetrical with one end circle 14 and another end circle 15 offset from it.
  • the asymmetrical suction geometry is designed in such a way that there is a low-cavitation inlet in the most frequently occurring operating states.
  • the inventive design according to the embodiment avoids entry losses and ensures low exit losses in the diffuser, friction occurs only on the diffuser walls and not also on the blade walls.
  • the long flow in the diffuser which is oriented toward the outlet nozzles 8 to 10, enables the exact maintenance of a desired flow pattern.
  • the ring diffuser design with both radial and axial direction of action leads to a relatively small housing or well inside diameter. This in turn enables a compact design with a high thrust yield. This results in relatively large flow cross-sections, which also leads to a high thrust yield with a constant housing or well diameter (in relation to known solutions with bladed guide vanes), furthermore a low tendency to cavitation and the risk of contamination with the need for a coarse-meshed intake grille.
  • the asymmetrical inlet causes only a slight tendency towards inlet cavitation, at least in the most frequently occurring operating state.
  • the rotationally symmetrical diffuser without blades, the diffuser formation directly through the housing wall and impeller housing mean a relatively low manufacturing effort and lead to low weight, which is particularly important for large drives.
  • the cross-sectional profile in the diffuser can be optimized, the deflection radii are to be determined in such a way that, despite the lack of guide vanes, a non-detachable flow through the diffuser is ensured.
  • the entire water jet drive can be rotated in a known manner about the longitudinal axis of the impeller 7 in both circumferential directions without restriction or endlessly in order to be able to determine the exit direction of the water jets and thus the direction of propulsion of the driven watercraft.
  • the base plate 6 with the nozzles 8 to 10 and the inlet 7 can be rotated in a corresponding manner with respect to the housing 1, which in this case can be integrated as a load-bearing assembly in the load-bearing ship structure.
  • the outlet nozzles 8 to 10 ensure in all cases that water jets leave the drive at a flat angle, as can be seen in particular in FIG. 3, 4. It is therefore expedient in the invention that the diffuser is a non-bladed ring diffuser with an exit angle to the impeller axis between approximately 160 ° and 200 °, preferably 180 °.
  • the known drive device Due to the vane ring formed by the guide vanes, the known drive device (DE-A-4021340) is relatively heavy, which is disadvantageous in particular when the drive device is large in diameter, that is to say in the case of drive devices with high power. It is characteristic here that the guide device with the guide vane ring acts exclusively in the radial direction, as a result of which the vane ducts must have a large length, as a result of which the drive device has a relatively large diameter, which, as mentioned, leads to high weight and can lead to installation problems. in that the drive device takes up space that is lost as usable space.
  • the elimination of the blades compared to the prior art (DE-A-4021340) with the bladed diffuser makes the ring diffuser according to the invention considerably lighter, which is particularly important in large machines.
  • the ringless diffuser according to the invention is designed so that the direction of action is not only radial but also axial. This means that compared to a drive with bladed diffuser with the same thrust yield, the housing becomes smaller and lighter, or a higher thrust is achieved with the same external dimensions and reduced weight.
  • the latter version leads to a reduction in the risk of cavitation and the tendency to contamination due to the then larger flow cross sections.
  • the water jet drive designed according to the invention ensures a long guide to the outlet nozzles 8, 9 and 10.
  • the cross-sectional profile of the guide apparatus can increasingly be such that a conversion of speed energy into pressure energy is achieved (diffuser). However, the cross-sectional profile can also remain the same or even decrease.
  • the swirl component that is to say the component pointing in the circumferential direction of the flow emerging from the impeller, is retained to a greater extent in the non-bladed guide apparatus than is possible with a guide apparatus bladed according to the prior art.

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)
  • Hydraulic Turbines (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Organic Insulating Materials (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (9)

  1. Dispositif de propulsion par jet d'eau pour bateaux destinés également à naviguer en eaux peu profondes, une roue mobile à aubage avec axe de rotation vertical étant montée avec une possibilité de rotation dans un carter sous pression en forme de vasque dans lequel est introduit par le haut, à travers une plaque formant couvercle, le dispositif d'entraînement de la roue mobile qui est fermée en bas par une plaque formant fond qui comporte une entrée d'eau, située au centre et destinée à arroser axialement la roue mobile, et au moins une sortie d'eau à pente plate, un distributeur étant implanté entre l'extrémité de sortie des canaux d'alimentation de la roue mobile et la sortie d'eau au nombre d'au moins une, caractérisé en ce que le distributeur comporte un canal annulaire sans aube qui est disposé de manière concentrique entre le carter sous pression (12) et le carter (13) de la roue mobile et dans lequel le courant provenant d'une direction semi-axiale passe, en quittant la roue mobile (3), dans un courant de sortie du distributeur qui forme, avec la direction axiale d'entrée de la roue mobile, un angle compris environ entre 160° et 200°.
  2. Dispositif de propulsion par jet d'eau selon la revendication 1, caractérisé en ce que le canal annulaire est un diffuseur annulaire.
  3. Dispositif de propulsion par jet d'eau selon la revendication 1, caractérisé en ce que la section transversale du canal annulaire est constante ou diminue dans la direction d'écoulement.
  4. Dispositif de propulsion par jet d'eau selon la revendication 1, 2 ou 3, caractérisé en ce que le contour extérieur du canal annulaire est défini directement par le carter de pompage (12).
  5. Dispositif de propulsion par jet d'eau selon l'une des revendications 1 à 4, caractérisé en ce que le contour intérieur du canal annulaire est défini directement par le carter (13) de la roue mobile.
  6. Dispositif de propulsion par jet d'eau selon l'une des revendications 1 à 5, caractérisé en ce qu'en aval le canal annulaire débouche dans des tuyères de sortie (8 à 10) qui sont intégrées à une plaque formant couvercle (6) du carter d'entraînement.
  7. Dispositif de propulsion par jet d'eau selon l'une des revendications 1 à 6, caractérisé en ce que l'entrée de pompage (7) est asymétrique et située de préférence dans la plaque formant couvercle (7).
  8. Dispositif de propulsion par jet d'eau selon l'une des revendications 1 à 7, caractérisé en ce que le dispositif d'entraînement peut pivoter en totalité autour de l'axe longitudinal ou l'axe de rotation de la roue mobile (3).
  9. Dispositif de propulsion par jet d'eau selon l'une des revendications 1 à 8, caractérisé en ce que le distributeur se trouve dans le prolongement d'une roue mobile à aubage semi-axial (3).
EP94102485A 1993-02-20 1994-02-18 Dispositif de propulsion par jet d'eau Expired - Lifetime EP0612657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4305267 1993-02-20
DE4305267A DE4305267A1 (de) 1993-02-20 1993-02-20 Wasserstrahlantrieb

Publications (2)

Publication Number Publication Date
EP0612657A1 EP0612657A1 (fr) 1994-08-31
EP0612657B1 true EP0612657B1 (fr) 1997-05-02

Family

ID=6480954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102485A Expired - Lifetime EP0612657B1 (fr) 1993-02-20 1994-02-18 Dispositif de propulsion par jet d'eau

Country Status (11)

Country Link
US (1) US5520557A (fr)
EP (1) EP0612657B1 (fr)
JP (1) JP3673289B2 (fr)
CN (1) CN1048947C (fr)
AT (1) ATE152408T1 (fr)
DE (2) DE4305267A1 (fr)
DK (1) DK0612657T3 (fr)
ES (1) ES2103508T3 (fr)
FI (1) FI109013B (fr)
GR (1) GR3024084T3 (fr)
NO (1) NO306456B1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428748A1 (de) * 1993-02-20 1996-02-15 Schottel Werft Wasserstrahlantrieb
CN1098789C (zh) * 1997-01-01 2003-01-15 江伟业 压水(气)轮
DE19905141B4 (de) * 1998-02-10 2004-08-12 Kawasaki Jukogyo K.K., Kobe Vertikale Wasserstrahlantriebsvorrichtung
AUPP804799A0 (en) 1999-01-07 1999-01-28 Zwaan, Craig Jet propulsion pump
NL1013192C2 (nl) 1999-10-01 2001-04-03 Holland Roerpropeller B V Waterstraalvoortstuwingsinstallatie.
US6561857B1 (en) * 2001-08-10 2003-05-13 Romer Mass Hump boat
JP5634873B2 (ja) * 2007-12-05 2014-12-03 ショッテル ゲゼルシャフトミットベシュレンクターハフトゥング ポンプジェットを有する船推進システム
CN101456446B (zh) * 2007-12-11 2012-04-11 曹玉臣 拖船流体负压潜动力机
CN102369136A (zh) 2008-12-05 2012-03-07 施奥泰尔有限公司 带有喷水泵的船舶动力装置
DE102010048359A1 (de) 2010-10-13 2012-04-19 Schottel Gmbh Antriebsvorrichtung für ein Wasserfahrzeug
CN102745319B (zh) * 2012-06-22 2015-12-16 贾凤斌 水斗式船舶推进器
CN106516062B (zh) * 2016-12-12 2018-08-14 陈朋兴 一种船舶推进装置
CN107477023B (zh) * 2017-07-11 2023-09-29 高勋绿色智能装备(广州)有限公司 一种带导流系统的多出口对流泵
CN109263841B (zh) * 2018-10-30 2021-05-11 中船黄埔文冲船舶有限公司 一种喷水推进装置的安装方法
EP4048585A4 (fr) * 2019-10-22 2023-12-06 Paul Lincoln Sinclair Système et procédé de propulsion marine à faible bruit acoustique
FR3125278B1 (fr) 2021-07-19 2024-09-06 Gfic Propulseur vectoriel silencieux
ES1286659Y (es) * 2021-10-25 2022-05-09 Sedeno Jordi Monfort Dispositivo propulsor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL16979C (fr) *
GB140985A (en) * 1919-11-04 1920-04-08 James Herbert Wainwright Gill Improvements in or relating to the propulsion and manoeuvring of vessels
US4459117A (en) * 1977-04-25 1984-07-10 Jordan Robert L Liquid jet propulsion
US4672807A (en) * 1983-08-03 1987-06-16 Innerspace Corporation Wall thruster and method of operation
SU1689214A1 (ru) * 1989-08-10 1991-11-07 Конструкторское Бюро "Винт" Водометный движитель
DE4021340A1 (de) * 1990-07-04 1992-01-09 Schottel Werft Wasserstrahlantrieb fuer schiffe, die zum einsatz in flachen gewaessern bestimmt sind
FR2675764B1 (fr) * 1991-04-29 1996-08-02 Alain Cozian Dispositif de propulsion orientale par reaction a jet d'eau.

Also Published As

Publication number Publication date
ES2103508T3 (es) 1997-09-16
DE59402570D1 (de) 1997-06-05
JPH06286693A (ja) 1994-10-11
CN1093666A (zh) 1994-10-19
CN1048947C (zh) 2000-02-02
FI940786A (fi) 1994-08-21
DE4305267A1 (de) 1994-08-25
NO940575L (fr) 1994-08-22
FI940786A0 (fi) 1994-02-18
NO306456B1 (no) 1999-11-08
JP3673289B2 (ja) 2005-07-20
NO940575D0 (no) 1994-02-18
DK0612657T3 (da) 1997-09-29
US5520557A (en) 1996-05-28
FI109013B (fi) 2002-05-15
EP0612657A1 (fr) 1994-08-31
ATE152408T1 (de) 1997-05-15
GR3024084T3 (en) 1997-10-31

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