RU157910U1 - AZIMUTAL WATER JET ENGINE - Google Patents

Abstract

A water-jet propulsion device with azimuthal water conduits containing a vertical pump and a pressure chamber, characterized in that the electric motor itself performs the function of a vane pump, is mounted in a vertical cup, has a rotor with a hollow shaft and blades are rigidly fixed inside it, creating water pressure in the stationary pressure chamber when the rotor rotates with four water conduits connected at right angles to the horizon, entering which the flow moves through axial spring shut-off and control valves and exits under pressure through a nozzle n the direction under the bottom of the hull with an angle of 15-20 ° to it, creating the force of movement of the vessel.

Description

The utility model “water-jet propulsion with azimuthal water conduits” relates to the field of water transport and is intended for installation on various types of vessels that require high maneuverability in port waters, during mooring operations, when sailing in difficult ice conditions, in shallow water, when fishing vessels operate with networks, on ferries, on autonomous underwater vehicles, etc. A water-jet propulsion device can be additionally used as a thruster on large vessels, which allows not only to create force across the hull in the bow of the vessel, but also quickly to slow down or accelerate forward and backward movement without inertia, because It takes a certain amount of time to reverse the main engine, the propeller screw or the rotary propeller.

A water-jet propulsion device with azimuthal water conduits is installed in a vertical cylindrical bucket according to the size of the pump in the diametrical plane anywhere, along the length of the vessel, except for the center of buoyancy, flush with the bottom, and consists of a vane electric pump for taking water from under the bottom, a pressure chamber with a removable cover , azimuthal outlet conduits of at least four, axial spring shut-off valves in each conduit for regulating the force of the flow of water exiting under pressure through a nozzle under the bottom of the vessel. For the propulsion to operate, power is required.

Known Schottel water jet propulsion company SPJ, which consists of a vertically mounted central vane pump with a drive shaft, a rotating pressure chamber with a water conduit for discharge under pressure of water in the desired direction under the housing through the nozzle.

The disadvantages of such a mover are the inertia in operation due to the time required to rotate the nozzle 180 degrees when changing from forward to reverse, or when changing the direction of movement from one side to another, the complexity of the mechanism of rotation of the pressure chamber by a special drive with sealing glands, and difficulty in maintenance.

The tasks solved by the applicant are the simplicity of design and speed of device control, increased efficiency and reliability, reduced production and maintenance costs.

The technical result when using the utility model is the simplicity of design and maintenance, improving the reliability and efficiency, high speed change of direction and a significant improvement in maneuverability.

The specified technical result is achieved by the fact that:

- there is no drive shaft of the pump with a mount, and the electric motor is installed in a vertical cup, its rotor has a hollow shaft, inside which the blades are rigidly fixed. The electric motor itself performs the function of a vane pump to create water pressure in the propulsion chamber of the propulsion unit, to which 4 water conduits are connected at right angles to the horizontal between them. On the ship, the mover is installed with water conduits oriented along the diametrical plane and across;

- there is no rotation mechanism of the pressure chamber with sealing glands, and the change in traction force and direction of movement is made by opening the axial spring shut-off and control valves installed on each water conduit to open the water flow into the desired nozzle. A stream of water under pressure exits through a nozzle under the bottom of the hull at an angle to it of about 15-20 degrees, and creates the force of movement of the vessel. The speed of the vessel depends on the degree of opening of the valves and the speed of the electric pump;

- there is no inertia in the translation of the direction of the water flow, because switching of valves occurs without delay, unlike the time of a turn of a pressure chamber with a water pipe at the Schottel mover;

- the device has a modular design, which allows replacement of the pump or control valves in the event of a malfunction, maintenance of the device afloat with the appropriate differential without decommissioning the vessel;

- when 2 movers are installed on the vessel, the pressure chambers are connected by an emergency pipeline, and if any pump fails, the necessary water pressure is maintained in both pressure chambers to maintain the maneuverability of the vessel.

The essence of the utility model is illustrated by the drawing, with the image of the general view of the water-jet propulsion with azimuth conduits with nozzles in the section and the view of the plane AA.

Drawing of the proposed utility model FIG. 1 contains: 1 structural elements of the dry compartment of the vessel, 2 housing of the pressure chamber, 3 flange of the mounting cup, 4 housing of the pump motor, 5 oil seal with the thrust bearing of the pump, 6 rotor housing, 7 rotor blades, 8 lower motor flange, 9 rubber rings, 10 axial spring shut-off and control valves, 11 bolt connections of the parts, 12 pressure chamber cover, 13 oil seal and upper flange of the electric pump, 17 nozzles. FIG. 2: 14 the upper rotor exit to the pressure chamber, 15 screws of the motor flange fastening, 16 screws of the motor flange and pressure chamber mounting cup mounting flange screws, 18 water conduits (only one water conduit is shown in Fig. 1).

Water jet propulsion operates as follows. In the initial state, the electric motor-pump does not work, in its inlet channel there is water at the level of the working draft of the vessel, the propeller pump blades are in water, the valves are closed. When the electric motor-pump is turned on, water fills the pressure chamber and creates a static pressure inside, the valves are closed, the vessel is ready to move in any direction. At the opening of the aft water pipe, the ship goes forward. To turn in any direction, the water pipe of the desired side is opened, the vessel begins to turn. To make a turn or circulation of large vessels with 2 movers, the side valves of the bow mover of the opposite side additionally open, a pressure force appears, as a result of which the diameter of the circulation decreases significantly. To move from full speed forward to full speed back, the working aft water valve is simultaneously closed and the bow water valve is opened, which happens almost instantly, the vessel quickly stops and starts moving backward. For mooring to the berth with any side, a water conduit of the opposite side is used. Switching occurs quickly, without inertia, unlike the thrusters currently used, including the Schottel azimuth jet propulsion. For maintenance, replacement of a faulty electric pump or valve, the vessel is made the appropriate trim, open the dry sealed compartment of the mover. To lift the pump from the vertical tunnel, open the lid of the pressure chamber, while the water level does not rise above the pump mounting flange to the glass. In this position, the valves are also above the water level, which allows for their replacement or maintenance. All work is done afloat, without decommissioning the vessel. If a pipeline is additionally connected to the pressure chamber, then the water-jet propulsion device can be used as a fire or emergency pump for cooling the vessel’s engines with outboard water to receive ballast.

Claims (1)

A water-jet propulsion device with azimuthal water conduits containing a vertical pump and a pressure chamber, characterized in that the electric motor itself performs the function of a vane pump, is mounted in a vertical cup, has a rotor with a hollow shaft and blades are rigidly fixed inside it, creating water pressure in the stationary pressure chamber when the rotor rotates with four water conduits connected at right angles to the horizon, entering which the flow moves through axial spring shut-off and control valves and exits under pressure through a nozzle n the direction under the bottom of the hull with an angle of 15-20 ° to it, creating the force of movement of the vessel.

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