RU2716469C1 - Power plant of surface ship with partial electric drilling - Google Patents

Abstract

FIELD: vessels and other watercrafts.

SUBSTANCE: invention relates to shipbuilding, namely to combined power plants with partial electric drilling. Ship-borne combined power plant with partial electric propulsion consists of two main gas turbine engines and two propulsion motors, output shafts of each of which are connected to reduction gear. Each of these two types of drive engines, depending on the mode of ship motion, through the reduction gear works on rotation of shaft line of its bead. By means of inter-gear transmission each separate drive motor can operate on shaft lines from both sides simultaneously. Each propulsion electric motor is fed through a converter from its bow or stern power station, each of which consists of a main switchboard and at least two diesel generators.

EFFECT: reduced operating costs during the whole service life and increased reliability of the power plant.

1 cl, 1 dwg

Description

The invention relates to shipbuilding, in particular, to combined (hybrid) power plants with partial electric propulsion and can be used on surface ships of the Navy.

Known ship power plant according to the patent of the Russian Federation No. 2186708 from 12.28.2000 (prototype) Ship power plant contains at least one primary engine, the output shaft of which is connected to the rotor shaft of the electric generator and the propeller motor, the shaft of which is connected to the propeller shaft. The technical result is to reduce the noise emitted into the water when operating in electric mode and increase the efficiency of the installation. The specified ship power plant has significant disadvantages. Firstly, it is not intended to transfer the output power from one side to another, and if one of the primary engines fails, it leads to a significant loss of speed. Secondly, failure of the electric generator will lead to the impossibility of transmitting power both mechanically and electrically, which leads to a complete loss of power. Also, the electric motor and the electric generator are subject to greater wear during operation from the prime mover through a mechanical transmission to rotate the propeller shaft. All these shortcomings indicate a low reliability of the ship's power plant.

The aim of the proposed invention is to eliminate these disadvantages, which allows to reduce operating costs throughout the life of the ship. In addition to operating costs, the advantages of a partial-electric power plant are:

- providing a wide range of speeds from the lowest possible to full (combat);

- ensuring a low noise mode of the ship.

- ensuring the possibility of operating a power plant at a negative outside temperature and in ice conditions;

- providing increased range of the ship at an economic speed;

- improving the reliability of the power plant.

The proposed power plant involves a flexible power distribution system depending on the tactical situation. This makes it possible to use new generations of weapons, various types of electromagnetic protection and other systems on ships in the same volumes of generated energy, thus linking the ship’s power to tactical and technical requirements.

The claimed technical solution is illustrated by the image. In FIG. 1 shows a schematic diagram of the operation of a combined power plant.

A combined power plant with partial electric movement is used as follows.

The main gas turbine engine (1, 2) and the rowing electric motor (3, 4), depending on the ship’s travel mode, operate through a reduction gear with a rotational propeller gearbox (variable pitch screw) (8, 9) on one or both sides, depending on the ship’s travel mode.

There are two modes for ensuring the ship's progress:

- the course of operation under the main engines, ensuring the full course of the ship and its maneuvering;

- stroke under electric propulsion, providing a small, low-noise and economic course of the ship.

In the running mode under the main engines, gas turbine units (1, 2) operate through a gear complex (7) to a shaft line from the secondary engine (8, 9) of their side, or by means of inter-gear transmission to the shaft ducts from the secondary engine of both sides.

In the propulsion mode, electric propulsion motors (3, 4) receive power through converters (5, 6) each from its power plant, bow and stern, consisting of main switchboards (10, 11) and diesel generators (12, 13, 14, 15), through the gearbox complex (7), they work on the shaft drive from the secondary shaft (8, 9) of their side, or through an inter gear drive to the shaft shaft from the secondary shaft of both sides.

The goal is achieved due to the fact that in the proposed combined power plant there is the possibility of choosing the drive engine and taking advantage of each of them depending on the tactical situation and the operating mode of the ship.

The proposed technical solution is possible for installation on ships and vessels of any purpose, including ships of the Navy.

Implementation of the proposed technical solution for a power plant with a partial electric propulsion system will allow to obtain:

- the possibility of long-term (without time limit) economical operation at low and low noise speeds when using a propeller motor, due to which maximum fuel economy is achieved;

- the possibility of transmitting torque from one (any) gas turbine unit or from one (any) propeller motor to two shaft shafts by means of an inter gear drive, which allows selecting resource-saving mode of the ship’s course;

- preservation of the resource of the main engines and reduction of operating costs through the use of a more reliable, economical, and easier to operate propeller motor, since the cost of repairing the propeller motors and diesel generators is significantly lower than the cost of repairing the main engines.

Claims (1)

Partial electric propulsion ship power plant consisting of two main gas turbine engines and two propeller electric motors, the output shafts of each of which are connected to the gearbox, while each of these two types of drive engines, depending on the ship’s travel mode, rotates through the gearbox the shaft guide of its side, characterized in that by means of an inter gear drive each individual drive motor can operate on the shaft lines from both sides simultaneously, At the same time, each propeller electric motor is powered through the converter from its bow or stern power station, each of which consists of a main switchboard and at least two diesel generators.

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