EP0464739A1 - Propulsion marine par jets d'eau pour bateaux navigant en eaux peu profondes - Google Patents

Propulsion marine par jets d'eau pour bateaux navigant en eaux peu profondes Download PDF

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Publication number
EP0464739A1
EP0464739A1 EP91110861A EP91110861A EP0464739A1 EP 0464739 A1 EP0464739 A1 EP 0464739A1 EP 91110861 A EP91110861 A EP 91110861A EP 91110861 A EP91110861 A EP 91110861A EP 0464739 A1 EP0464739 A1 EP 0464739A1
Authority
EP
European Patent Office
Prior art keywords
base plate
impeller
water
water jet
pressure housing
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.)
Granted
Application number
EP91110861A
Other languages
German (de)
English (en)
Other versions
EP0464739B1 (fr
Inventor
Siegfried Dipl.-Ing. Lais
Gerd Krautkrämer
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 EP0464739A1 publication Critical patent/EP0464739A1/fr
Application granted granted Critical
Publication of EP0464739B1 publication Critical patent/EP0464739B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H11/00Marine propulsion by water jets
    • B63H11/02Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/101Marine 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
    • B63H11/102Marine 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

  • a vertical, tubular shaft is installed in the ship's hull, the lower end of which lies in the essentially horizontal plane: 1 1 e the essentially flat floor of the for use also records certain ships in extremely shallow waters.
  • a semiaxial impeller is rotatably arranged in this shaft about a vertical axis which coincides with the longitudinal axis of the shaft. This impeller sucks water axially in its inlet in order to convey it obliquely upwards in the blade channels.
  • the pumped water enters a spiral housing, from which it emerges through a nozzle, the jet energy determining the propulsion of the ship and the jet direction of its direction of movement.
  • the shaft is closed at the bottom by a cover, in which the suction opening for the water to be sucked in by the impeller is arranged concentrically.
  • An outlet opening can be provided at any point of the pressure housing or “pot” in order to effect the propulsion of the ship and to determine the direction of propulsion or direction of travel of the ship.
  • a plurality of outlet openings can also be provided in an appropriate assignment to one another and to the housing.
  • the drive device also has a cylindrical or pot-shaped pressure vessel 1 which is installed in the ship with a vertical longitudinal axis, is closed at the bottom by a base plate 3, at the top by the cover plate 27 stiffened by ribs 27a, and is coaxial with it Longitudinal axis receives the semi-axially bladed impeller 2, which is followed by a guide vane ring 5, which largely converts the flow energy that prevails in the region of the outlet edges of the blades of the impeller 2 into pressure energy.
  • the axial water inlet 4 in the pressure housing 1 is integrated concentrically to the longitudinal axis of the housing in the base plate 3, in which three outlet nozzles 10, 11, 12 are arranged and formed symmetrically to a vertical diameter plane 16a (FIG. 2).
  • the axially sucked in water through the inlet 4 is directed obliquely upwards in the impeller 2 and, after the diffuser with the guide vane ring 5, is supplied to the outlet nozzles 10 to 12 in order to leave them obliquely downwards (FIG. 1). Accordingly, there is only a very small flow in the pressure chamber 6 of the pressure housing 1 because the flow energy is largely converted into pressure energy.
  • the base plate 3 has no mechanical connection. Rather, there is an annular gap between the pressure housing wall and the base plate 3, which is largely sealed watertight by seals.
  • sealing rings 17 are held in a vertical, cylindrical edge 16, which bear against an annular, wear-resistant and rust-free insert 18 stiffening the shaft 1 in the region of its lower edge.
  • Each of the three sealing rings 17 provided is made of a sealing material, it is an open ring which springs radially and which is installed relative to the other two rings in such a way that the joints of the three open rings are as small as possible, but also offset against one another in the circumferential direction are, so that the joint of the middle ring lies behind an uninterrupted section of both the above and the sealing ring lying below it and on top of that the joint of the top ring is circumferentially offset from the joint of the lowest sealing ring. This provides an optimal labyrinth seal with regard to the operational requirements.
  • the water inlet 4 integrated in the base plate 3 is an inward-looking, cuff-shaped guide body 19 which has a flow-restricting flow-restricting contour and, at the same time, serves as a suction grille with ribs 20.
  • a control shaft 21 is held firmly with its lower end centrally in the inlet 4, so that rotary movements of the control shaft 21 can be transmitted in both circumferential directions via the webs 20 to the base plate 3 in order to determine the exit direction from the water nozzles 10 to be able to change up to 12 emerging water jets 13, 14, 15.
  • the rotary movements of the control shaft 21 are effected via a gear transmission 22, 23, the flange 24 of which is flanged to transmit power to the output shaft of a suitable servomotor, not shown.
  • the upper end of the control shaft 21 and gear wheel 22, 23 are arranged in the upper region of a dome-like housing 25, the gear wheel being a worm gear, the worm 23 of which is guided with its shaft 26 out of the housing 25 and outside the housing 25 at the end the connecting flange 26 wearing.
  • Worm gear 22 on the one hand and worm 23, shaft 26 and flange 24 on the other hand are arranged in different planes parallel to the image plane, so that the worm 23 is brought tangentially to and engages in particular on the back of the worm wheel 22.
  • the housing cover plate 27 is arranged, which is designed as an annular plate with stiffening ribs 27a and detachably on the outer edge with the upper shaft edge or a horizontal flange 28 stiffening it and also releasably on the inner edge with an annular flange 29 of the dome-like housing 25 is connected, wherein screw connections 30 are symbolically represented as releasable fastening means.
  • the blades of the guide vane ring 5 are fastened to the underside of the housing cover plate 27, the cover plate 27 being contoured so that it is one of the cover disks of the blade channel boundaries.
  • the other cover plate 31 serves to limit the blade channels and ends in a cylinder section 31 a, between which and the inlet guide body 19 there is a wire roller bearing 32.
  • the wire roller bearing 32 is made of a stainless steel and is lubricated by the surrounding medium (water). Foreign bodies in the medium, such as dirt and sand, are kept away from the wire roller bearing 32 by felt rings 33, 34, which are also lubricated by the medium (FIG. 4). With this arrangement, no oil-grease lubrication is required, the storage is environmentally friendly and maintenance-free.
  • the entire base plate 3 is endlessly controllable about its longitudinal axis, which is the longitudinal axis of the control shaft 21, so that the full horizontal thrust is available in any control direction.
  • the control shaft 21 is guided coaxially through the power transmission shaft 35, which is designed as a hollow shaft and ends below the gear 22, 23 in the dome-like housing 25 and at this upper end rotatably carries a bevel gear 36, onto which and thus the power transmission shaft 35 the drive torque for the impeller 2 is transmitted from a suitable drive motor, not shown, by means of a counter wheel 37 and its shaft, which is led out of the dome-like housing 25, and a coupling flange 38.
  • the power transmission shaft 35 is guided by means of two axially offset rotary bearings 39, 40 in a tube 41, which is held concentrically in the plane of the flange 29 in the dome-like housing 25 at its lower end, the two tube ends and the rotary bearings 39, 40 above or below this level. Below the lower end of the tube 41, the impeller 2 with its hub is rotatably mounted on the power transmission shaft 35.
  • the worm drive 22, 23 can, in addition to the previously usual electrical or hydraulic control, also be controlled mechanically, which is seen as an advantage according to the invention.
  • the reason for this possibility is that the control torques in both directions of rotation are the same and above all very low. This is mainly made possible by the symmetrical type order of the outlet nozzles 10 to 12 and the seal 17 according to the invention.
  • the seal between the base plate 3 and the pressure housing 1 via the labyrinth seal with the sealing piston rings 17 makes it possible to manage with low control torques. This is because there is no stick-slip effect, in which the two parts to be moved and sealed against each other would run the risk of the seals stuck to one or both parts at standstill and being torn off and destroyed when one part was turned on with considerable torque. Although this danger does not exist in the application according to the invention of the sealing rings 17 designed as open, radially resilient “piston rings”, they are made of largely wear-resistant plastic material in an “open design”. When installed, they are radially preloaded like a spring. There is no increase in friction which hinders the rotation of the impeller 2 due to the pressure in the pressure chamber 6.
  • the previously mentioned insert 18, which is designed as a welded-in or in some other way, for example shrink-fit, wear ring made of stainless steel serves as the mating surface of the rotor against which the seals 17 abut.
  • the inner wall of the pot or pressure housing 1 above the insert 18 is smooth and without heels and forms the base plate 3 with the impeller 2, diffuser 5, 27a, 31 and pressure housing cover 27 with ribs 27a, a structural unit which is supported on the upper end of the pressure housing and there is releasably connected to this so that this unit can be removed after loosening the connections.
  • the assembly is detachably connected to the pressure housing. while at the lower end there is a horizontally spring-loaded seal to the pressure housing by means of the sealing rings, the latter also functioning reliably in view of inevitable manufacturing inaccuracies, in particular non-roundness, over a long operating time.
  • the three water pressure outlets 10 to 12 arranged symmetrically to the vertical diameter plane 16a were found to be the optimal solution according to the invention.
  • one outlet nozzle 11 or the pair of outlet nozzles 10, 12 can possibly also be used as long as the one outlet nozzle 11 or the pair of outlet nozzles 10, 12 is or are arranged symmetrically to the diameter plane 16a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Hydraulic Turbines (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Logic Circuits (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Motor Or Generator Frames (AREA)
  • Earth Drilling (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Massaging Devices (AREA)
  • Nozzles (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
EP91110861A 1990-07-04 1991-07-01 Propulsion marine par jets d'eau pour bateaux navigant en eaux peu profondes Expired - Lifetime EP0464739B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4021340 1990-07-04
DE4021340A DE4021340A1 (de) 1990-07-04 1990-07-04 Wasserstrahlantrieb fuer schiffe, die zum einsatz in flachen gewaessern bestimmt sind

Publications (2)

Publication Number Publication Date
EP0464739A1 true EP0464739A1 (fr) 1992-01-08
EP0464739B1 EP0464739B1 (fr) 1994-10-05

Family

ID=6409667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91110861A Expired - Lifetime EP0464739B1 (fr) 1990-07-04 1991-07-01 Propulsion marine par jets d'eau pour bateaux navigant en eaux peu profondes

Country Status (16)

Country Link
US (1) US5146865A (fr)
EP (1) EP0464739B1 (fr)
JP (1) JP3349712B2 (fr)
KR (1) KR920002421A (fr)
AT (1) ATE112530T1 (fr)
BR (1) BR9102745A (fr)
CA (1) CA2046157A1 (fr)
DE (2) DE4021340A1 (fr)
DK (1) DK0464739T3 (fr)
ES (1) ES2062623T3 (fr)
FI (1) FI913225A (fr)
HU (1) HUT64277A (fr)
NO (1) NO174737C (fr)
PL (1) PL290913A1 (fr)
RU (1) RU2041841C1 (fr)
YU (1) YU86191A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456446B (zh) * 2007-12-11 2012-04-11 曹玉臣 拖船流体负压潜动力机

Families Citing this family (12)

* 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
DE4305267A1 (de) * 1993-02-20 1994-08-25 Schottel Werft Wasserstrahlantrieb
US5476401A (en) * 1994-09-30 1995-12-19 The United States Of America As Represented By The Secretary Of The Navy Compact water jet propulsion system for a marine vehicle
US5989082A (en) * 1998-01-20 1999-11-23 Corliss; Joseph J. Propulsion system for large ships
DE19905141B4 (de) * 1998-02-10 2004-08-12 Kawasaki Jukogyo K.K., Kobe Vertikale Wasserstrahlantriebsvorrichtung
US6009822A (en) * 1999-03-29 2000-01-04 Aron; Douglas A. Bow or stern thruster
WO2001072587A2 (fr) 2000-03-29 2001-10-04 Power Vent Technologies, Inc. Technique de propulsion d'un bateau avec propulsion de proue coordonnee
CN101758756A (zh) * 2009-11-27 2010-06-30 王政中 水陆两栖汽车水中推进转向装置
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***的多出口对流泵
RU192144U1 (ru) * 2019-05-07 2019-09-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Рыбинский государственный авиационный технический университет имени П.А. Соловьева" Сопло водометного движителя
EP4048585A4 (fr) * 2019-10-22 2023-12-06 Paul Lincoln Sinclair Système et procédé de propulsion marine à faible bruit acoustique
KR20230086271A (ko) 2021-12-08 2023-06-15 한승욱 레저용 수중 추진 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB140985A (en) * 1919-11-04 1920-04-08 James Herbert Wainwright Gill Improvements in or relating to the propulsion and manoeuvring of vessels
US4672807A (en) * 1983-08-03 1987-06-16 Innerspace Corporation Wall thruster and method of operation
DE3735699A1 (de) * 1987-10-22 1989-05-03 Schottel Werft Wasserstrahlantrieb fuer wasserfahrzeuge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136907B (de) * 1960-02-22 1962-09-20 Peter Jastram Steuerschraubenanordnung fuer Wasserfahrzeuge
DE1828946U (de) * 1961-01-24 1961-03-30 Schottel Werft Propeller-antrieb fuer wasserfahrzeuge.
US3098464A (en) * 1962-04-10 1963-07-23 Barney B Holland Propulsion unit for shallow draft boats or the like
DE2757454C3 (de) * 1977-12-22 1980-10-30 Schottel-Werft Josef Becker Gmbh & Co Kg, 5401 Spay Wasserstrahlantrieb zum Antrieb und Steuern von insbesondere flachgehenden Wasserfahrzeugen
DE3609032A1 (de) * 1986-03-18 1987-09-24 Schottel Werft Antriebseinrichtung fuer insbesondere flachgehende wasserfahrzeuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB140985A (en) * 1919-11-04 1920-04-08 James Herbert Wainwright Gill Improvements in or relating to the propulsion and manoeuvring of vessels
US4672807A (en) * 1983-08-03 1987-06-16 Innerspace Corporation Wall thruster and method of operation
DE3735699A1 (de) * 1987-10-22 1989-05-03 Schottel Werft Wasserstrahlantrieb fuer wasserfahrzeuge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101456446B (zh) * 2007-12-11 2012-04-11 曹玉臣 拖船流体负压潜动力机

Also Published As

Publication number Publication date
US5146865A (en) 1992-09-15
FI913225A (fi) 1992-01-05
KR920002421A (ko) 1992-02-28
YU86191A (sh) 1994-11-15
JPH06278692A (ja) 1994-10-04
NO174737C (no) 1994-06-29
NO912608D0 (no) 1991-07-03
DE59103158D1 (de) 1994-11-10
DK0464739T3 (da) 1994-10-31
EP0464739B1 (fr) 1994-10-05
NO912608L (no) 1992-01-06
HUT64277A (en) 1993-12-28
ES2062623T3 (es) 1994-12-16
JP3349712B2 (ja) 2002-11-25
NO174737B (no) 1994-03-21
RU2041841C1 (ru) 1995-08-20
DE4021340A1 (de) 1992-01-09
PL290913A1 (en) 1992-04-21
HU912268D0 (en) 1991-12-30
ATE112530T1 (de) 1994-10-15
BR9102745A (pt) 1992-02-04
FI913225A0 (fi) 1991-07-03
CA2046157A1 (fr) 1992-01-05

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