CN111483582A

CN111483582A - Ship power system

Info

Publication number: CN111483582A
Application number: CN202010295277.7A
Authority: CN
Inventors: 刘桂香; 张伟; 高倩
Original assignee: Jiangsu Maritime Institute
Current assignee: Jiangsu Maritime Institute
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-08-04

Abstract

The invention belongs to the field of ship engineering, and relates to a distributed power technology for ships. The invention provides a ship power system, which comprises a ship paddle and an air paddle, wherein the ship paddle and the air paddle are arranged in the vertical direction, the air paddle is driven by a hydraulic system, the hydraulic system comprises an oil tank, a filter, a two-position two-way valve, a one-way valve, a gear pump, a speed regulating valve, a hydraulic motor and an overflow valve, the filter is arranged in front of the two-position two-way valve on an oil path, the one-way valve is arranged below the gear pump, the speed regulating valve is arranged in front of the hydraulic motor, the hydraulic motor drives the air paddle to rotate, the overflow valve is arranged in front of the oil tank, and the whole hydraulic system forms a loop for circulating oil. Compared with the prior art, the ship power system provided by the invention is convenient for daily maintenance, can be flexibly installed and is not limited by space. The weight of the transmission system can be effectively reduced.

Description

Ship power system

Technical Field

The invention belongs to the field of ship engineering, and relates to a ship power technology.

Background

The ship propulsion modes mainly comprise three propulsion modes, namely electric propulsion, internal combustion engine propulsion and steam turbine propulsion, wherein most of the propulsion modes are internal combustion engine propulsion. The internal combustion engine has the characteristics of high thermal efficiency and high power, and is adopted by a plurality of ships.

At present, the propulsion mode of the diesel engine mostly adopts the power configuration of a single engine and a single propeller. For the ship with higher maneuverability, a double-engine double-propeller propulsion mode is adopted. Both of these approaches are not fully satisfactory for the needs of today's vessel development.

Although the traditional double-engine double-propeller and single-engine single-propeller can meet the requirements of special ships on the propulsion technology, certain influence is inevitably brought to the propulsion efficiency of the ships in the transmission process, the weight and the volume are overlarge, and the difficulty is brought to the structural arrangement of the ships.

Disclosure of Invention

1. The technical problem to be solved is as follows:

in the prior art, the propelling efficiency of a ship is influenced in the process of power transmission of double-engine double-propeller, and the ship is difficult to structurally arrange due to overlarge weight and volume.

2. The technical scheme is as follows:

in order to solve the above problems, the present invention provides a marine power system, comprising a marine propeller and an air propeller, wherein the marine propeller and the air propeller are arranged in a vertical direction, the air propeller is driven by a hydraulic system, the hydraulic system comprises an oil tank, a filter, a two-position two-way valve, a check valve, a gear pump, a speed regulating valve, a hydraulic motor and an overflow valve, the filter on an oil path is arranged in front of the two-position two-way valve, the check valve is arranged below the gear pump, the speed regulating valve is arranged in front of the hydraulic motor, the hydraulic motor drives the air propeller to rotate, the overflow valve is arranged in front of the oil tank, and the whole hydraulic system forms a loop for circulating oil.

The gear pump is tightly connected with the shaft.

The air paddle speed is greater than the speed of the marine paddle.

The filter is connected with the oil way in a non-fastening mode and can be detached.

The side surface of the gear pump at the meshing position of the gears is provided with an oil discharge groove towards the oil discharge cavity.

The driving wheel is fixedly connected with the shaft, and the driving wheel drives the driven wheel to rotate.

3. Has the advantages that:

compared with the prior art, the ship power system provided by the invention is convenient for daily maintenance, can be flexibly installed and is not limited by space. The weight of the transmission system can be effectively reduced.

Drawings

FIG. 1 is a diagram of a hydraulic system transmission

Fig. 2 is a cross-sectional view of a gear pump and shaft.

Description of reference numerals: 1-1 oil tank, 1-2 filter, 1-3 two-position two-way valve, 1-4 one-way valve, 1-5 gear pump, 1-6 speed regulating valve, 1-7 hydraulic motor, 1-8 overflow valve, 2-1 driving wheel, 2-2 driven wheel and 2-3 shaft.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in figure 1, the ship power system comprises a ship paddle and an air paddle, wherein the ship paddle and the air paddle are arranged in a vertical direction, the air paddle is driven by a hydraulic system, the hydraulic system comprises an oil tank 1-1, a filter 1-2, a two-position two-way valve 1-3, a one-way valve 1-4, a gear pump 1-5, a speed regulating valve 1-6, a hydraulic motor 1-7 and an overflow valve 1-8, the filter 1-2 is arranged in front of the two-position two-way valve 1-3 on an oil circuit, the one-way valve 1-4 is arranged below the gear pump 1-5, the speed regulating valve 1-6 is arranged in front of the hydraulic motor 1-7, the hydraulic motor 1-7 drives the air paddle to rotate, the overflow valve 1-8 is arranged in front of the oil tank 1-1, the whole hydraulic system constitutes a circuit for circulating the oil.

The filter 1-2 is installed to filter impurities in the oil tank to ensure stable operation. And a one-way valve 1-4 is also arranged below the gear pump 1-5 and used for ensuring that oil on an oil way can normally enter the hydraulic pump and the counter flow phenomenon cannot be generated. And a two-position two-way valve 1-3 is also arranged between the filter 1-2 and the one-way valve 1-4 and used for controlling an oil path, and the two-position two-way valve 1-3 can effectively control the opening and closing of the oil path. Oil flows into the hydraulic motors 1-7 through an oil way, the hydraulic motors can stably push the air paddles to rotate and ensure that the speed of the air paddles is greater than that of the marine paddles, in order to ensure the working power of the hydraulic motors 1-7, the speed regulating valves 1-6 are adopted before the oil enters the hydraulic motors, and the speed of the air paddles realized by the speed regulating valves 1-6 is greater than that of the marine paddles so as to ensure that the transmission efficiency of the oil realizes the speed requirement by controlling the flow of the oil.

The gear pump 1-5 is tightly connected with the shaft 2-3, the diesel engine pushes the shaft 2-3 turns, and the gear pump 1-5 is positioned on the shaft 2-3.

The whole hydraulic system has the working process that oil 1-1 is pumped out of an oil tank, filtered by a filter 1-2 and then flows into a one-way valve 1-4 and then flows into a gear pump 1-5. The oil liquid flows out of the gear pump 1-5 and then reaches the speed regulating valve 1-6 through an oil way, and the oil liquid enters the hydraulic motor 1-7 after the flow control of the oil liquid. The hydraulic motors 1-7 push the propeller to rotate, and after the pressure is reduced by the overflow valves 1-8, the oil flows into the oil tank through the loop, so that a project is completed.

The filter 1-2 is connected with the oil way in a non-fastening way and can be detached. The daily cleaning and maintenance work is convenient. The hydraulic system does not affect the efficiency of the marine oar in the whole transmission process.

As shown in FIG. 2, the driving wheel 2-1 is tightly connected with the shaft 2-3, so that 2-3 rotations of the shaft drive the driving wheel 2-1 rotation of the gear pump 1-5, and the driving wheel 2-1 drives the driven wheel 2-2 to rotate. The speed of the marine propeller is stable, and the air propeller is not influenced by the marine propeller and is only related to the power of a diesel engine, the flow rate and the power of a gear motor.

In order to ensure the maximum efficiency of transmission, the marine propeller and the air propeller are arranged along the vertical direction. Because the gear pump 1-5 has the possibility of trapping oil, the side surface of the gear pump 1-5 at the meshing position of the gears is provided with an oil discharge groove towards the oil discharge cavity, so that the oil trapped in two teeth can be discharged, and the stability of a working system is ensured.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A ship power system comprises a ship paddle and is characterized in that: the marine propeller is arranged in the vertical direction and driven by a hydraulic system, the hydraulic system comprises an oil tank (1-1), a filter (1-2), a two-position two-way valve (1-3), a one-way valve (1-4), a gear pump (1-5), a speed regulating valve (1-6), a hydraulic motor (1-7) and an overflow valve (1-8), the filter (1-2) is arranged in front of the two-position two-way valve (1-3) on the oil path, then the one-way valve (1-4) is arranged below the gear pump (1-5), the speed regulating valve (1-6) is arranged in front of the hydraulic motor (1-7), the hydraulic motor (1-7) drives the air propeller to rotate, the overflow valve (1-8) is arranged in front of the oil tank (1-1), the entire hydraulic system constitutes a circuit for circulating the oil.

2. The marine power system of claim 1, wherein: the gear pump (1-5) is tightly connected with the shaft (2-3).

3. The marine power system of claim 1, wherein: the air paddle speed is greater than the speed of the marine paddle.

4. The marine power system of claim 1, wherein: the filter (1-2) is connected with the oil way in a non-fastening way and can be detached.

5. The marine power system of claim 1, wherein: the side surface of the gear pump (1-5) at the meshing position of the gears is provided with an oil discharging groove towards the oil discharging cavity.

6. The marine power system of any one of claims 1-5, wherein: the device is characterized by further comprising a driving wheel (2-1), wherein the driving wheel (2-1) is fixedly connected with the shaft (2-3), and the driving wheel (2-1) drives the driven wheel (2-2) to rotate.