EP0317431B1 - Schiff mit mindestens einem Strahltriebwerk - Google Patents

Schiff mit mindestens einem Strahltriebwerk Download PDF

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Publication number
EP0317431B1
EP0317431B1 EP88402881A EP88402881A EP0317431B1 EP 0317431 B1 EP0317431 B1 EP 0317431B1 EP 88402881 A EP88402881 A EP 88402881A EP 88402881 A EP88402881 A EP 88402881A EP 0317431 B1 EP0317431 B1 EP 0317431B1
Authority
EP
European Patent Office
Prior art keywords
vanes
fact
casing
outlet
boat 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
EP88402881A
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English (en)
French (fr)
Other versions
EP0317431A1 (de
Inventor
Jean-Pierre Guezou
Jacques Pichard
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.)
Direction General pour lArmement DGA
Original Assignee
Direction General pour lArmement DGA
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Publication date
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Publication of EP0317431A1 publication Critical patent/EP0317431A1/de
Application granted granted Critical
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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

Definitions

  • the invention relates to a ship provided with at least one jet engine comprising a casing containing, between an inlet tangent to the hull and a rear water outlet, an upstream duct, a pump rotor, stationary straightening vanes. and a hub carried by the blades which forms with the casing an outlet nozzle.
  • Patents US-A-4631032 and FR 2 031 627 describe propellants in which the liquid, pressurized by a divergent for one or by a pump, is accelerated by transformation of the static pressure into dynamic pressure via a nozzle.
  • the pressure thus applied to the converging walls of the nozzle results in an internal drag force which reduces the thrust of the propellant accordingly.
  • the object of the invention is to remedy this drawback, and to do this, the speeding up of the water is obtained only by injection of gas, the outlet section between the blades (7) and the outlet (4) being constant.
  • the supply circuit comprises an outer annular tank formed around the blades in the casing and connected to the injection pipes.
  • This arrangement ensures the uniformity of the pressure of the gas around the blades and a certain regulation of this pressure.
  • the outer cover can open directly into the injection pipes which then consist of an annular passage between the casing and the downstream edge of the blades. It can also be connected to the injection pipes, formed in this case by an annular passage between the hub and the downstream edge of the blades, by channels provided in the blades and an inner cover formed in the hub at the blades. Finally, it can be connected to the injection pipes formed this time by an annular passage along the downstream edges of the blades by channels provided in the blades.
  • means are provided for varying the convergence of the nozzle.
  • the additional energy expenditure necessary for the compression and introduction of the gas may not always be justified and it is therefore useful to be able to restore the nozzle to its conventional convergence in order to use it without injecting gas.
  • a thruster which comprises, between an inlet tangent to the hull 3 and a rear outlet 4, an upstream duct 5, a pump impeller 6, stationary straightening vanes 7 carrying a hub 8 which forms with the rear part 9 of the casing a nozzle 10.
  • FIG. 2 shows in more detail the outer cover 14 constituted by an annular casing 14a connected at the front at 14b and at the rear at 14c to the main casing of the propellant.
  • the inner wall of the annular cover is constituted by an outer ring 18 secured to the vanes 7 like the inner ring 19.
  • a second annular casing 20 secured to this assembly is fixed on the shell 21 of the hub 8 at 22 to form an inner cover 23.
  • the outer 18 and inner 19 rings, as well as the vanes 7, are traversed by channels 24 which therefore connect the outer cover 14 to the inner cover 23.
  • the outer cover 14 and the downstream edge of the blades and of the ring 18 are separated by an annular tube in the form of a slot 25 which opens at low incidence into the nozzle 10.
  • the downstream edge of the blades and the ring 19 are separated from the rear partition of the inner cover 23 by an annular tube in the form of a slot 26 which opens at a low angle into the nozzle 10.
  • the casing 9 has been shown at the bottom of FIG. 2 in a position 9a such that the section of the nozzle is constant from the blades to the outlet 4.
  • the section of the ring delimited downstream of the blades by the hub 8 and the casing 9A is the same or roughly the same as the section of the outlet 4.
  • the portion of casing 9 has been shown at the top of FIG. 2 in a position 9B conventional for thrusters of this type, that is to say clearly more convergent, so that the section of the outlet 4 is much smaller than the section of the ring located downstream of the blades.
  • the passage of a section to the other is done by the mechanism 17 in a known manner.
  • FIGS 5, 6 and 7 show another embodiment of the invention in which the blades have on their rear edge rectilinear tubes in the form of a slot 29 allowing an injection of air parallel to the flow of water passing through the blades .
  • These slots 29 are connected to the external supply cover 14 by channels 30 provided in each of the vanes 7 and in the external ring 31, which are curvilinear channels of practically constant section.
  • the inner ring 32 which is not pierced, is connected directly to the shell 21 of the hub 8 at 33.
  • the successive sections of the nozzle increase by an amount materialized in FIGS. 2 and 5 by the triangular zone located below the dashed line drawn in the vicinity of the casing 9A and it is therefore also necessary to start the compressor 16, the role is precisely to compensate for this increase in volume with air injected at the blades, air whose pressure will decrease as it travels through the nozzle 10 to reach atmospheric pressure at outlet 4 and whose volume will therefore increase in inverse proportion.
  • one or the other of the external and internal injections can be used in combination with the injection via the slots 29 since it suffices to do this by connecting these slots 29 of FIGS. 7 to the channels 24 of FIGS. 2 to 4.

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)
  • Toys (AREA)

Claims (7)

  1. Schiff, das mit mindestens einem Reaktionspropeller ausgestattet ist, der aus einem Zylinder besteht, der, zwischen einer Eingangsöffnung (3) tangential zum Schiffsrumpf (2) und einer hinteren Wasseraustrittsöffnung (4) eine obere Leitung (5), einen Rotor (6), feste Leitschaufeln (7), eine Einspritzvorrichtung für Hochdruckgas und eine von den Leitschaufeln getragene Nabe (8) enthält wobei die Leitschaufeln mit dem Zylinder (9) eine Düse bilden, dadurch gekennzeichnet, daß die Beschleunigung der Flüssigkeit zwischen den Leitschaufeln (7) und der Austrittsöffnung (4) ausschließlich durch das Einspritzen von Gas erreicht wird, wobei der Strömungsquerschnitt der Wasser-Gas-Mischung zwischen diesen Leitschaufeln (7) und dieser Austrittsöffnung (4) konstant gehalten wird, um den Innendruck aufzuheben.
  2. Schiff gemäß dem Patentanspruch 1, dadurch gekennzeichnet, daß es sich bei dem erwähnten Gas um Luft handelt.
  3. Schiff gemäß den Patentansprüchen 1 oder 2, dadurch gekennzeichnet, daß das Zuführsystem für Treibstoff im Zylinder um die Leitschaufeln (7) herum ein ringförmiges, äußeres Turbinengehäuse (14) besitzt, das mit den Einspritzdüsen (25,26,29) verbunden ist.
  4. Schiff gemäß dem Patentanspruch 3, dadurch gekennzeichnet, daß das äußere Turbinengehäuse (14) direkt in die Einspritzdüsen mündet, die aus einem Ringspalt (25) zwischen dem Zylinder und dem unteren Rand der Leitschaufeln bestehen.
  5. Schiff gemäß den Patentansprüchen 3 und 4, dadurch gekennzeichnet, daß das äußere Turbinengehäuse mit den Einspritzdüsen verbunden ist, die aus einem Ringspalt (26) zwischen der Nabe (8) und dem unteren Rand der Leitschaufeln bestehen, aus in den Leitschaufeln (7) vorgesehenen Kanälen (24) und einem inneren Turbinengehäuse (23), das in der Nabe (8) auf der Höhe der Leitschaufeln gebildet wird.
  6. Schiff gemäß den Patentansprüchen 3 bis 5, dadurch gekennzeichnet, daß das äußere Turbinengehäuse (14) mit den Einspritzdüsen verbunden ist, die durch einen Ringspalt (29) längs der unteren Ränder der Leitschaufeln und durch in den Leitschaufeln vorgesehene Kanäle (30) gebildet werden.
  7. Schiff gemäß den Patentansprüchen 1 bis 6, das dadurch gekennzeichnet ist, daß Vorrichtungen vorgesehen sind, um den Querschnitt der Austrittsöffnung der Düse (10) zu variieren.
EP88402881A 1987-11-16 1988-11-16 Schiff mit mindestens einem Strahltriebwerk Expired - Lifetime EP0317431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8715782A FR2623161B1 (fr) 1987-11-16 1987-11-16 Navire pourvu d'au moins un propulseur a reaction
FR8715782 1987-11-16

Publications (2)

Publication Number Publication Date
EP0317431A1 EP0317431A1 (de) 1989-05-24
EP0317431B1 true EP0317431B1 (de) 1992-08-19

Family

ID=9356811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88402881A Expired - Lifetime EP0317431B1 (de) 1987-11-16 1988-11-16 Schiff mit mindestens einem Strahltriebwerk

Country Status (5)

Country Link
US (1) US4929200A (de)
EP (1) EP0317431B1 (de)
DE (1) DE3873885T2 (de)
ES (1) ES2035346T3 (de)
FR (1) FR2623161B1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505639A (en) 1988-06-02 1996-04-09 Burg; Donald E. Hydro-air drive
FR2641581A1 (fr) * 1989-01-09 1990-07-13 Chas Jean Propulseur a jet creux et corps de pompe fixe
US5720636A (en) * 1990-02-28 1998-02-24 Burg; Donald E. Marine propulsor
FR2671048A1 (fr) * 1991-01-02 1992-07-03 Jean Bernard Chas Propulseur attele dans son jet creux.
US5653189A (en) * 1991-12-20 1997-08-05 Dynafoils, Inc. Hydrofoil craft
US5311832A (en) * 1991-12-20 1994-05-17 Dynafoils, Inc. Advanced marine vehicles for operation at high speeds in or above rough water
US6024614A (en) * 1992-03-09 2000-02-15 Burg; Donald E. High performance marine propulsion system
US5256090A (en) * 1992-12-21 1993-10-26 Woolley Russell C Variable-aperture jet nozzle for jet-propelled watercraft
US5574246A (en) * 1995-04-21 1996-11-12 Alliedsignal Inc. Underwater vehicle with improved jet pump propulsion configuration
US5679037A (en) * 1996-03-01 1997-10-21 Rieben; Leo R. Stationary screw induction system
US6224434B1 (en) 1999-09-07 2001-05-01 Bombardier Motor Corporation Of America Pump jet with axial directional flow control device for thrust modulation
US6168485B1 (en) * 1999-10-15 2001-01-02 Outboard Marine Corporation Pump jet with double-walled stator housing for exhaust noise reduction
US7329160B2 (en) * 2000-02-26 2008-02-12 Andrea Grimmeisen Motorized watercraft
US6629866B2 (en) * 2000-10-26 2003-10-07 Donald E. Burg Marine vehicle propulsion system
US6692318B2 (en) 2001-10-26 2004-02-17 The Penn State Research Foundation Mixed flow pump
DE102004049615B4 (de) * 2004-10-12 2009-03-05 Rotinor Gmbh Motorwasserfahrzeug
EP1820820A1 (de) 2006-02-15 2007-08-22 INEOS Manufacturing Belgium NV Polyethylenzusammensetzung
EP2410011A1 (de) 2010-07-23 2012-01-25 INEOS Manufacturing Belgium NV Polyethylenzusammensetzung
FR3074140B1 (fr) * 2017-11-29 2019-10-18 Pinball Boat Bateau comportant des motorisations qui presentent des helices positionnees chacune dans un conduit procurant un fonctionnement optimise en marche avant

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE169974C (de) *
US3214903A (en) * 1963-03-14 1965-11-02 Buehler Corp Jet boat nozzle
US3249083A (en) * 1963-12-16 1966-05-03 Outboard Marine Corp Marine jet propulsion
AU4810668A (en) * 1968-12-19 1971-06-17 Ernest Albert Keller Ainslie Water-jet propulsion
FR2031627A5 (de) * 1969-01-16 1970-11-20 Commissariat Energie Atomique
GB1323872A (en) * 1969-10-23 1973-07-18 Defence Secretary For State Fo Marine propulsion system
GB1413845A (en) * 1972-02-11 1975-11-12 Rolls Royce Marine propulsion
DE2212650A1 (de) * 1972-03-16 1973-09-20 Messerschmitt Boelkow Blohm Ummantelung fuer eine schiffsschraube
DE2323029A1 (de) * 1973-05-08 1974-11-14 Walter Stoeckmann Vorrichtung zur verstaerkung der schubkraft von wasserstrahl- und anderen antriebsaggregaten und ihre anwendung
JPS60157994A (ja) * 1984-01-27 1985-08-19 Kawasaki Heavy Ind Ltd 水ジエツト推進式ボ−ドの排気装置

Also Published As

Publication number Publication date
FR2623161A1 (fr) 1989-05-19
DE3873885D1 (de) 1992-09-24
DE3873885T2 (de) 1993-03-18
EP0317431A1 (de) 1989-05-24
US4929200A (en) 1990-05-29
ES2035346T3 (es) 1993-04-16
FR2623161B1 (fr) 1990-04-06

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