FR2622531A1 - MARINE PROPULSION SYSTEM UTILIZING A PELTON-TYPE TURBINE OPEN TO AN ENGINE AND A HYDRAULIC PUMP - Google Patents

Abstract

The device according to the invention applies to the transmission of mechanical energy to the propeller of a ship: the high pressure fluid coming from a hydraulic pump coupled to a motor is projected onto the buckets of a turbine. action, of the PELTON type. It consists of a turbine 10 with double or separate blades, in the form of symmetrical shells called buckets 9 mounted on a shaft 13 which is coaxial with the propeller 12. A high pressure fluid is injected, controlled by a valve 11, to the injectors inputs 7 for forward gear and 8 for reverse gear. The fluid, by gravity, falls into the cover casing 14, and is sucked by the hydraulic pump 2 which is part of the primary assembly, forming a closed circuit.

Description

The present invention (FIG. 1) consists of a coupled motor (I)

  to a hydraulic pump (2) high pressure

which feeds a turbo machine (3).

  The fluid used (6) can be water, oil, or any other

  mineral and organic liquid. Many advantages appear, in parti-

  in terms of size and layout of the different

  mechanical organs, because of the flexible transmission.

  The originality of our device concerns the fact that the turbo machine concerned (3) is a PELTON type action turbine and is generally used in hydroelectric plants for drop levels greater than 300 m. calculation of the number of specific revolutions Ns: Nss shows that this principle can be applied to the propulsion of all ships

(Figure 2).

  The hydraulic pump (2) provides a flow of fluid at high pressure (6) 100 to 200 bar are within reach of the current equipment. The fluid is fed to the marine turbine (10) by a distributor formed by one or more injectors

or nozzles.

  At the outlet of each injector (7 and 8), a free jet of circular section is formed which strikes on its edge, blades in the form of symmetrical shells called buckets (9), separated by a sharpened rib.

  (15). The fluid (6) escapes laterally after having been deviated by 180 °.

  After opening the valves (11), the turbine (10) starts to move, and it

is coaxial with the helix (12).

  Simple and inexpensive technological solutions

  found at each stage of realization and adaptation to a particular

  given, for example: - manufacture of motors (l) and compact hygroscopic pump (2) for this device, --interchangeable injectors (7 and 8) - standard hydraulic equipment (2), produced by molding (turbine (3) (13) Because of its design, the turbo machine is particularly competitive in the field of marine propulsion where the French achievements are practically non-existent.In addition, this competitiveness must naturally be found on the international market where marine propulsion has remained. in

the traditional domain.

  The advantage of this invention is to allow French companies to be more competitive in view of the importance of American and Japanese exports, currently dominant in the marrhea, and the possibility for France to become the market leader. and also to consume products

  it is cheap and essentially French.

  We have a simple, robust and reliable device.

  It can be adapted to ships of very different sizes, ranging from

  pleasure for commercial vessels, in particular for which a gain in

  It's nice because you can put the engine where you want it.

  This device allows the elimination of the problem of wintering, it allows the construction of gasoline or other engines, molding, turbines and hydraulic pumps, it also avoids the risk of breaking trees, sprockets or other . Moreover, in case of damage, the troubleshooting of the engines is very easy, because according to the arrangement of the engines, the removal is

  very easy, even on the quayside for large vessels.

  The originality of our device is that the turbo machine

  (3), is a PELTON type action turbine.

  This principle can be applied to the propulsion of all ships.

  Has a high pressure fluid (6) of 100 to 200 bar, consisting of a primary system (1) and a hydraulic turbine (2) which can be injected to the turbo machine (10), composed of blades in the form of shells called buckets (9) separated by projecting ribs (15) which under the action of the high

  pressure starts moving, depending on the opening direction of the valve (11).

  The fluid (6) by gravitation falls into a tarpaulin (14), and is sucked at low pressure (16) into the hydraulic pump (2) of the system

  primary and forming a closed circuit.

  A forward or reverse step is made according to the direction of the injection into

  (7) or (8). The turbo machine is coaxial with the shaft (13) and the propeller (12).

  We find ourselves with a simple and compact system, thus allowing us to manufacture the primary system <1) and a hydraulic pump (2),

  inexpensive with the turbo machine (10).

Claims (5)

  1) Marine propulsion system using a motor (1) associated with a hydraulic pump (2) characterized in that the high pressure fluid (6) leaving the pump is sent via injectors (7,8) to a turbine! (10)   with double or separate vanes provided with buckets (9), with PELTON wheel type action.   2) System according to claim 1 characterized in that the wheel is composed of blades (9) in the form of symmetrical shells separated by ribs in protrusions (15).   3) System according to claim I or 2 characterized in that any type of fluid (6) falls, by gravitation, into a tarpaulin (14) and is sucked at low pressure (16) by the hydraulic pump (2), this which forms a closed circuit.   4) System according to one of the preceding claims characterized in that   the direction of movement of the turbine (10) depends on the injection into (7,8) according to   the opening direction of the valve (11), giving a forward and backward movement.   5) System according to one of the preceding claims characterized in that   the turbine (10) is coaxial with the shaft (13) and the propeller (12).