WO1988005008A1 - Unite de propulsion a jet d'eau - Google Patents

Unite de propulsion a jet d'eau Download PDF

Info

Publication number
WO1988005008A1
WO1988005008A1 PCT/SE1987/000594 SE8700594W WO8805008A1 WO 1988005008 A1 WO1988005008 A1 WO 1988005008A1 SE 8700594 W SE8700594 W SE 8700594W WO 8805008 A1 WO8805008 A1 WO 8805008A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
pump
delivery conduit
pump housing
outlet opening
Prior art date
Application number
PCT/SE1987/000594
Other languages
English (en)
Inventor
Kjell Haglund
Original Assignee
Kamewa Ab
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 Kamewa Ab filed Critical Kamewa Ab
Priority to KR1019880701030A priority Critical patent/KR890700098A/ko
Publication of WO1988005008A1 publication Critical patent/WO1988005008A1/fr
Priority to NO883844A priority patent/NO883844L/no

Links

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

Definitions

  • a water jet propulsion unit A water jet propulsion unit.
  • the present invention relates to a water jet propulsion unit intended for watercraft and being of the kind set forth in the preamble of Claim 1.
  • Such propulsion units are normally intended for use with relatively small marine vessels and also with larger ves ⁇ sels, and comprise a propeller pump which is mounted in the rear part of the hull, on or relatively close to the stern or transom of the vessel.
  • the propeller pump has a pump housing which incorporates an inlet opening and an outlet opening.
  • a pump impeller which can be driven by a drive machine located within the hull is arranged in the path of the water flowing from the inlet opening to the outlet opening.
  • the outlet opening of the pump house is located externally of the transom or stern of the vessel, such that a propelling jet of water is ejected from the outlet opening when the pump is acti ⁇ vated.
  • Devices may also be provided for de ⁇ flecting the water jet to a forward direction or to an obliquely forward direction, in order to slow down the vessel or to go astern.
  • the inlet opening of the pump housing is connected to a water delivery conduit which ex- tends from the inlet opening to a water intake opening positioned at some suitable location in the hull, beneath the water line of the vessel.
  • the object of the present invention is to provide a water jet propulsion unit of the aforesaid kind with which the aforesaid problem is overcome.
  • the propulsion unit with means for closing the outlet from the pump housing in an essentially airtight manner when the pump is not in use, and also with means for supplying air under pressure to the interior of the water delivery conduit such as to empty said conduit by forcing the water therefrom.
  • the invention will now be described in more detail with reference to the accompanying drawing, the single figure of which illustrates schematically and in axial section an exemplifying embodiment of a water jet propulsion unit constructed in accordance with the invention.
  • the drawing illustrates, very schematically, part of the stern of the hull of a marine vessel, said hull comprising a bottom part 1 and a transom 2.
  • the actual water jet propulsion unit comprises a propeller pump housed in a pump housing 3, which in the illustrated embodiment is mounted in an opening in the transom 2, so that the inlet opening 3a of the pump housing is located within the hull, while the outlet opening 3b of the pump housing is located ex ⁇ ternally of the transom 2 and directed immediately rear- wards.
  • the pump housing 3 has arranged therein a pump im ⁇ peller 4 which can be driven, by a shaft 5, from a drive machine (not shown) located within the vessel.
  • the inlet opening 3a of the pump housing 3 is connected to a water delivery conduit 6, which extends to a water intake opening 7 located beneath the water-line of the vessel on the out ⁇ side of the hull.
  • the water intake opening 7 of the illus ⁇ trated embodiment is located in the bottom 1 of the hull. It will be appreciated, however, that the location of the water intake opening 7 and the length of the water delivery conduit 6 can vary quite considerably, depending on the type of vessel concerned and the configuration of the hull.
  • the water intake opening may be located in a foil plane so as to be con ⁇ stantly submersed beneath the surface of the water, where- with the water delivery channel 6 may be extended through a foil tie or strut, up to the actual hull of the vessel.
  • a pipe which can be swung about a vertical axis so as to change the direction of the water jet exiting through the opening 3b, when the pump is operating, and therewith steer the vessel laterally.
  • This guide pipe is normally accompanied with a reversing device, by means of which the water jet can be deflected to a forward direction, therewith enabling the water jet to be used for slowing down the vessel and for moving astern.
  • a reversing device by means of which the water jet can be deflected to a forward direction, therewith enabling the water jet to be used for slowing down the vessel and for moving astern.
  • the propulsion unit is provided with means for closing the outlet from the pump housing 3 in an essentially airtight manner.
  • the means of the illus ⁇ trated inventive embodiment comprises an inflatable element 8 which can be inserted into the outlet opening 3b of the pump housing from the outside.
  • This inflatable element may, for example, be constructed in a manner similar to conventional inflatable bouys. An element of this kind can be readily inserted into the outlet opening 3b from outside the pump housing and then inflated so as to close and seal the outlet opening 3b.
  • the inflatable element can be in ⁇ serted through the aforesaid guide pipe mounted downstream of the outlet opening 3b, or through an opening which is formed between the guide pipe and the outlet opening 3b when the guide pipe is swung to one side to the extent of its travel.
  • Other devices for closing the outlet opening 3b in an essentially airtight manner can be used, however.
  • the outlet opening 3b can be closed with the aid of a cover member capable of being fitted over the opening from outside the pump housing, or by means of spe ⁇ cial-duty flaps or the like capable of being swung to a position in which they close the outlet opening 3b.
  • the inventive water jet propulsion unit also incorporates means for removing water from the water delivery conduit.
  • the exemplified embodiment of the inventive propulsion unit includes a pipe 9 which is connected to the water delivery conduit 6 and which is intended to deliver compressed air to the interior of the conduit 6 from an air pump or com ⁇ pressor 10 located in the vessel.
  • the compressor is prefer ⁇ ably kept running continuously, so as to maintain the re ⁇ quisite overpressure in the delivery conduit 6, even though some air may leak out through the outlet opening 3b of the pump housing, or at other locations. The major part of the air continuously delivered to the conduit will flow out through the water intake opening 7.
  • the propulsion unit may con ⁇ veniently be provided with a drain pipe 11 (shown schemati ⁇ cally in the drawing),extending from the lowermost part of the pump housing 3. This prevents the formation of ice in the pump housing 3, which would otherwise render it diffi ⁇ cult or impossible to start the propulsion unit.

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)
  • Jet Pumps And Other Pumps (AREA)

Abstract

Une unité de propulsion à jet d'eau pour engin aquatique comprend une pompe propulseuse logée dans un logement de pompe (3), dans laquelle sont ménagées une ouverture d'entrée (3a) qui est reliée à un conduit d'amenée d'eau (6) s'étendant jusqu'à une ouverture d'admission d'eau (7) située sous la ligne d'eau de l'engin aquatique et une ouverture de sortie (3b) à travers laquelle est produit un jet d'eau de propulsion lorsque la pompe est en utilisation. Afin d'empêcher l'opération de fouling dans le conduit d'amenée d'eau (6) ou la formation de glace dans le conduit d'amenée lorsque l'unité de propulsion n'est pas utilisée, on prévoit un organe (8) servant à fermer l'ouverture de sortie (3b) du logement de pompe de façon essentiellement hermétique et un organe (9, 10) servant à acheminer de l'air sous pression dans le conduit d'amenée (6) de façon à faire sortir du conduit par un effet de pression toute l'eau qui s'y trouve.
PCT/SE1987/000594 1986-12-30 1987-12-11 Unite de propulsion a jet d'eau WO1988005008A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019880701030A KR890700098A (ko) 1986-12-30 1987-12-11 수분사 추진장치
NO883844A NO883844L (no) 1986-12-30 1988-08-29 Vannjetmotor for fremdrift av fartoeyer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8605613A SE455780B (sv) 1986-12-30 1986-12-30 Straldriftsaggregat
SE8605613-2 1986-12-30

Publications (1)

Publication Number Publication Date
WO1988005008A1 true WO1988005008A1 (fr) 1988-07-14

Family

ID=20366795

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000594 WO1988005008A1 (fr) 1986-12-30 1987-12-11 Unite de propulsion a jet d'eau

Country Status (5)

Country Link
KR (1) KR890700098A (fr)
AU (1) AU1107688A (fr)
DK (1) DK448588A (fr)
SE (1) SE455780B (fr)
WO (1) WO1988005008A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035612A1 (fr) * 1995-05-12 1996-11-14 Marine Technology Development Ltd. Mecanisme de deflexion pour enveloppes de carene
WO1997026182A1 (fr) 1988-06-02 1997-07-24 Burg Donald E Propulsion hydropneumatique
US5720636A (en) * 1990-02-28 1998-02-24 Burg; Donald E. Marine propulsor
WO1998007619A1 (fr) * 1996-08-19 1998-02-26 Kvaerner Asa Procede d'entretien d'un hydrojet, et corps de blocage d'une entree ou sortie du jet d'eau
WO1998007618A1 (fr) * 1996-08-19 1998-02-26 Kvaerner Asa Procede d'entretien d'un hydrojet presentant un carter de turbine
US6024614A (en) * 1992-03-09 2000-02-15 Burg; Donald E. High performance marine propulsion system
CN102085908A (zh) * 2011-01-10 2011-06-08 四川大学 一种高效静音的水面或水下驱动技术
WO2012139172A1 (fr) * 2011-04-15 2012-10-18 Austal Ships Pty Ltd Système permettant d'empêcher la formation de salissures marines
JP2015107794A (ja) * 2013-10-21 2015-06-11 泰工技研工業株式会社 圧縮空気流体機械及び連続圧縮流体噴出推進装置、これを用いた船舶の推進システム、ならびに気液混合流体機械の推進装置。

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177902C (fr) *
DE86469C (fr) * 1900-01-01
SE435706B (sv) * 1983-03-04 1984-10-15 Goetaverken Arendal Ab Anordning for montering av thrusterpropellrar

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177902C (fr) *
DE86469C (fr) * 1900-01-01
SE435706B (sv) * 1983-03-04 1984-10-15 Goetaverken Arendal Ab Anordning for montering av thrusterpropellrar

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997026182A1 (fr) 1988-06-02 1997-07-24 Burg Donald E Propulsion hydropneumatique
US5720636A (en) * 1990-02-28 1998-02-24 Burg; Donald E. Marine propulsor
US6024614A (en) * 1992-03-09 2000-02-15 Burg; Donald E. High performance marine propulsion system
US5910033A (en) * 1995-05-12 1999-06-08 Marine Technology Development Ltd. Deflection mechanism for ship hulls
WO1996035612A1 (fr) * 1995-05-12 1996-11-14 Marine Technology Development Ltd. Mecanisme de deflexion pour enveloppes de carene
AU713421B2 (en) * 1996-08-19 1999-12-02 Kvaerner Asa Method for water jet maintenance and blocking body for blocking a water jet inlet or outlet
WO1998007618A1 (fr) * 1996-08-19 1998-02-26 Kvaerner Asa Procede d'entretien d'un hydrojet presentant un carter de turbine
AU713950B2 (en) * 1996-08-19 1999-12-16 Kvaerner Asa Method for water jet maintenance and a water jet including an impeller housing
WO1998007619A1 (fr) * 1996-08-19 1998-02-26 Kvaerner Asa Procede d'entretien d'un hydrojet, et corps de blocage d'une entree ou sortie du jet d'eau
WO2001056875A1 (fr) * 1998-02-23 2001-08-09 Burg, Paulette, Renee Systeme de propulsion naval haute performance
CN102085908A (zh) * 2011-01-10 2011-06-08 四川大学 一种高效静音的水面或水下驱动技术
CN102085908B (zh) * 2011-01-10 2013-06-12 四川大学 一种高效静音的水面或水下驱动装置
WO2012139172A1 (fr) * 2011-04-15 2012-10-18 Austal Ships Pty Ltd Système permettant d'empêcher la formation de salissures marines
JP2015107794A (ja) * 2013-10-21 2015-06-11 泰工技研工業株式会社 圧縮空気流体機械及び連続圧縮流体噴出推進装置、これを用いた船舶の推進システム、ならびに気液混合流体機械の推進装置。

Also Published As

Publication number Publication date
DK448588D0 (da) 1988-08-11
SE8605613D0 (sv) 1986-12-30
SE455780B (sv) 1988-08-08
SE8605613L (sv) 1988-07-01
AU1107688A (en) 1988-07-27
DK448588A (da) 1988-08-11
KR890700098A (ko) 1989-03-02

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