DE4433782A1 - Water jet drive system with radial pumps, for fast boats - Google Patents

Water jet drive system with radial pumps, for fast boats

Info

Publication number
DE4433782A1
DE4433782A1 DE19944433782 DE4433782A DE4433782A1 DE 4433782 A1 DE4433782 A1 DE 4433782A1 DE 19944433782 DE19944433782 DE 19944433782 DE 4433782 A DE4433782 A DE 4433782A DE 4433782 A1 DE4433782 A1 DE 4433782A1
Authority
DE
Germany
Prior art keywords
flow
centrifugal pumps
drive system
pumps
radial centrifugal
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Withdrawn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
DE19944433782
Other languages
German (de)
Inventor
Joachim Dr Ing Yi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19944433782 priority Critical patent/DE4433782A1/en
Publication of DE4433782A1 publication Critical patent/DE4433782A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B63H11/107—Direction control of propulsive fluid

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 drive unit incorporates two engines, two transmissions, and two radial pumps, and a flow directing unit. The pumps may replace a conventional propeller, and may be arranged in tandem, with each pump connected to an engine via a transmission. The velocity and pressure of the incident flow may be used to increase the output pressure, and the output flow may be directed in opposition to the direction of motion of the craft. Individual output pipes may also be used in order to facilitate forwards, backwards, and sideways motion.

Description

1. Stand der Technik1. State of the art

Es gibt bereits ein Strahlantriebssystem, das von Propellern angetrieben wird.A jet propulsion system already exists, that of propellers is driven.

Aber beim konventionellen Antriebssystem, das besonders im Ha­ fen- und Küstengebiet anfällig ist, sind die Kavitationsprobleme unvermeidbar, die besonders beim Propeller sehr kritisch sind.But with the conventional drive system, especially in the Ha cavitation and coastal areas are vulnerable to cavitation problems unavoidable, which are particularly critical with the propeller.

Das Antriebssystem nutzt außerdem den hydrodynamischen Zustand der Anströmung nicht.The drive system also uses the hydrodynamic state the inflow does not.

2. Problemstellung2. Problem

Um die effektive Schubkraft durch das neue Strahlantriebssystem des Druckwassers zu erzielen, ist es erforderlich, daß die För­ dermenge und Druckhöhe der Pumpen optimiert werden.The effective thrust from the new jet propulsion system to achieve the pressurized water, it is necessary that the För the quantity and pressure level of the pumps can be optimized.

3. Lösungsansatz3. Approach Anwendung des Satzes von "Bernoulli"Application of the sentence of "Bernoulli"

Der Energieinhalt einer Strömung wird mit dem Satz von Bernoulli angegeben. Die Energieanteile können als Energiehöhen ausge­ drückt werden: Druckhöhe, Ortshöhe und Geschwindigkeitshöhe.The energy content of a flow is calculated using Bernoulli's theorem specified. The energy shares can be expressed as energy levels are pressed: pressure altitude, local altitude and speed altitude.

Aus der Umsetzung von potentialer Energie in kinetische Energie bzw. von Druck in Impuls ergibt die zeitliche Änderung des Im­ pulses die erforderliche Schiffsschubkraft bei der stationären Strömung:From the conversion of potential energy into kinetic energy or from pressure to impulse results in the change in Im over time pulses the required ship thrust for the stationary Flow:

Dieser Lösungsansatz hat mit der Rotation nichts zu tun, die be­ sonders beim Propeller die Kavitationserscheinungen verursacht. Außerdem wird der Anströmungszustand, z. B. Geschwindigkeit und Druck, für die Druckerzeugung genutzt. This approach has nothing to do with the rotation that be causes cavitation especially in the propeller. In addition, the inflow state, e.g. B. speed and Print used for pressure generation.  

4.Funktionsprinzip4. Principle of operation 4.1 Anordnung der Radialkreiselpumpen4.1 Arrangement of radial centrifugal pumps

Das neue Antriebssystem besteht aus einer Antriebseinheit (2 Motoren, 2 Getrieben und 2 Radialkreiselpumpen in einer Anord­ nungsform "Tandem") und einem Strömungsrichter (Bild 1).The new drive system consists of a drive unit (2 motors, 2 gearboxes and 2 radial centrifugal pumps in a "tandem" arrangement) and a flow straightener ( Figure 1).

Das System erzeugt mit dem Anströmungszustand den höheren Druck. Gleichzeitig wird die Strömungsrichtung am Austritt gegen die Schiffahrtsrichtung gerichtet (Bild 2).The system generates the higher pressure with the flow condition. At the same time, the direction of flow at the outlet is directed against the direction of navigation ( Figure 2).

4.2 Manövrierfähigkeit des Schiffes4.2 Maneuverability of the ship

Der Strömungsrichter ermöglicht die Vorwärts-, Rückwärts- und Querbewegung durch die Umlenkung der Austrittsströmung.The flow judge allows forward, backward and Transverse movement by redirecting the outlet flow.

Wegen des hohen Wasserdruckes eignen sich die individuellen Austrittsrohre je nach Steuerrichtung besser für die Steuerung, als das konventionelle Ruder.Because of the high water pressure, the individual ones are suitable Outlet pipes, depending on the control direction, better for the control, than the conventional rudder.

5. Vor- und Nachteile und Anwendungsbereiche5. Advantages and disadvantages and areas of application

Das neue Strahlantriebssystem hat folgende vor- und Nachteile und Anwendungen:The new jet propulsion system has the following advantages and disadvantages and applications:

Vorteile:Benefits:

  • - Höherer Gesamtwirkungsgrad- Higher overall efficiency
  • - Bessere Manövrierfähigkeit- Better maneuverability
  • - Geringere Herstellungskosten- Lower manufacturing costs
  • - Höhere Betriebssicherheit- Higher operational security
  • - Einfache Wartung und Reparatur- Easy maintenance and repair

Nachteile:Disadvantage:

  • - Begrenzte Pumpenfördermenge- Limited pump delivery

Anwendungen:Applications:

  • - Schnell-, Zoll-, Rettungs- und Freizeitboote- Speed, customs, lifeboat and leisure boats
  • - Schnelltransporter für Personen und Güter- Fast transporter for people and goods

Ein Schnellboot und ein Katamaran sind als Anwendungsbeispiel mit 2 Antriebseinheiten dargestellt (Bild 3, Bild 4-1 und Bild 4-2).A speed boat and a catamaran are shown as an application example with 2 drive units ( picture 3, picture 4-1 and picture 4-2).

Claims (4)

1. Schiffsstrahlantriebssystem mit Radialkreiselpumpen, ist da­ durch gekennzeichnet, daß die neue Antriebsanlage aus einer An­ triebseinheit (2 Motoren, 2 Getrieben und 2 Radialkreiselpumpen) und einem Strömungsrichter besteht (Bild 1).1. Marine jet propulsion system with radial centrifugal pumps, is characterized in that the new propulsion system consists of a drive unit (2 motors, 2 gearboxes and 2 radial centrifugal pumps) and a flow straightener ( Fig. 1). 2. Das neue Strahlantriebssystem nach Anspruch 1, ist dadurch gekennzeichnet, daß der Antrieb nicht mit konventionellem Pro­ peller, sondern mit Radialkreiselpumpen betrieben wird, wobei zwei Radialkreiselpumpen über die Getriebe mit einem jeweiligen Motor verbunden sind und in einer Anordnungsform "Tandem" ange­ ordnet sind (Bild 2).2. The new jet drive system according to claim 1, characterized in that the drive is not operated with conventional Pro peller, but with radial centrifugal pumps, two radial centrifugal pumps being connected via the gearbox to a respective motor and being arranged in a tandem arrangement ( Photo 2). 3. Nach Anspruch 2 erzeugt die Anordnung, die den Anströmungs­ zustand, z. B. Geschwindigkeit und Druck, nutzt, den höheren Druck. Gleichzeitig wird die Strömungsrichtung am Austritt gegen die Schiffahrtsrichtung gerichtet.3. According to claim 2, the arrangement generates the inflow state, e.g. B. speed and pressure, uses the higher pressure. At the same time, the direction of flow at the outlet is counter the direction of navigation. 4. Der Strömungsrichter nach Anspruch 1, gekennzeichnet dadurch, daß die individuellen Austrittsrohre die Vorwärts-, Rückwärts- und Querbewegung durch die Umlenkung der Austrittsströmung er­ möglichen.4. The flow judge according to claim 1, characterized in that that the individual outlet pipes the forward, backward and transverse movement through the deflection of the outlet flow possible.
DE19944433782 1994-09-22 1994-09-22 Water jet drive system with radial pumps, for fast boats Withdrawn DE4433782A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944433782 DE4433782A1 (en) 1994-09-22 1994-09-22 Water jet drive system with radial pumps, for fast boats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944433782 DE4433782A1 (en) 1994-09-22 1994-09-22 Water jet drive system with radial pumps, for fast boats

Publications (1)

Publication Number Publication Date
DE4433782A1 true DE4433782A1 (en) 1996-03-28

Family

ID=6528856

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944433782 Withdrawn DE4433782A1 (en) 1994-09-22 1994-09-22 Water jet drive system with radial pumps, for fast boats

Country Status (1)

Country Link
DE (1) DE4433782A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111643A1 (en) * 2005-04-21 2006-10-26 Catajet Consulting Sarl Propulsion unit for multihull such as a catamaran

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111643A1 (en) * 2005-04-21 2006-10-26 Catajet Consulting Sarl Propulsion unit for multihull such as a catamaran
FR2884799A1 (en) * 2005-04-21 2006-10-27 Xavier Peyre PROPULSION DEVICE FOR MULTI-SHELL BOAT SUCH AS CATAMARAN

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8139 Disposal/non-payment of the annual fee