CN111483582A - Ship power system - Google Patents

Abstract

The invention belongs to the field of ship engineering, and relates to a ship distributed power technology. The invention provides a marine power system, comprising a marine propeller and an air propeller, the marine propeller and the air propeller are arranged in a vertical direction, the air propeller is propelled by a hydraulic system, and the hydraulic system includes a fuel tank, a filter, 2/2-way valve, check valve, gear pump, speed control valve, hydraulic motor, relief valve, in the oil circuit, the filter is installed before the 2/2-way valve, and then the check valve is installed immediately after Below the gear pump, the speed regulating valve is located before the hydraulic motor, which drives the air paddle to rotate, and the relief valve is installed before the oil tank, and the entire hydraulic system constitutes a circuit for circulating oil. Compared with the prior art, the ship power system provided by the present invention is convenient for routine maintenance, can be installed flexibly, and is not limited by space. It can effectively reduce the weight of the transmission system.

Description

a ship power system

technical field

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

Background technique

The main methods of ship propulsion are electric propulsion, internal combustion engine propulsion, and steam turbine propulsion. Among them, most of the propulsion methods are internal combustion engine propulsion. Due to the characteristics of high thermal efficiency and high power, the internal combustion engine propulsion method is adopted by many ships.

At present, most of the propulsion methods of diesel engines adopt the power configuration of a single engine and a single propeller. For ships with higher maneuverability, the propulsion method of two engines and two propellers is adopted. However, these two methods cannot fully meet the needs of today's ship development.

Although the traditional double-engine double-screw and single-engine single-screw can meet the requirements of some special ships for propulsion technology, the transmission process will inevitably have a certain impact on the propulsion efficiency of the ship, and the weight and volume are too large, and Difficulties will also arise in the structural arrangement of the ship.

SUMMARY OF THE INVENTION

1. Technical problems to be solved:

In the prior art, the propulsion efficiency of the ship is affected in the process of power transmission of the double engine and the double propeller, and the weight and volume are too large, which brings difficulties to the structural arrangement of the ship.

2. Technical solutions:

In order to solve the above problems, the present invention provides a marine power system, including a marine propeller and an air propeller, the marine propeller and the air propeller are arranged in a vertical direction, and the air propeller is pushed by a hydraulic system, and the hydraulic system includes Oil tank, filter, 2/2-way valve, check valve, gear pump, speed control valve, hydraulic motor, relief valve, in the oil circuit, the filter is installed before the 2/2-way valve, followed by the check valve It is installed immediately below the gear pump. The speed regulating valve is located before the hydraulic motor, which pushes the air paddle to rotate, and the relief valve is installed before the oil tank. The entire hydraulic system constitutes a circuit that circulates the 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 and the oil circuit are non-fastened and detachable.

The gear pump opens an oil discharge groove toward the oil discharge chamber on the side of the meshing position of the gears.

It also includes a driving wheel, the driving wheel is fastened with the shaft, and the driving wheel drives the driven wheel to rotate.

3. Beneficial effects:

Compared with the prior art, the ship power system provided by the present invention is convenient for routine maintenance, can be installed flexibly, and is not limited by space. It can effectively reduce the weight of the transmission system.

Description of drawings

Figure 1 is a diagram of the hydraulic system transmission

Figure 2 is a sectional view of the gear pump and the shaft.

Reference number description: 1-1 fuel 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 relief valve, 2-1 driving wheel, 2-2 driven wheel, 2-3 shaft.

Detailed ways

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

As shown in Figure 1, a marine power system includes a marine propeller and an air propeller, the marine propeller and the air propeller are arranged in a vertical direction, and the air propeller is pushed by a hydraulic system, and the hydraulic system includes a fuel tank 1- 1. Filter 1-2, 2/2-way valve 1-3, check valve 1-4, gear pump 1-5, speed control valve 1-6, hydraulic motor 1-7, relief valve 1-8, On the oil circuit, the filter 1-2 is installed before the 2/2-way valve 1-3, then the one-way valve 1-4 is installed immediately below the gear pump 1-5, and the speed control valve 1-6 is located in Before the hydraulic motor 1-7, the hydraulic motor 1-7 pushes the air paddle to rotate, the relief valve 1-8 is installed before the oil tank 1-1, and the entire hydraulic system constitutes a circuit for circulating oil.

Filters 1-2 are installed to filter impurities in the fuel tank to ensure stable work. The lower part of the gear pump 1-5 is also equipped with a one-way valve 1-4 to ensure that the oil on the oil circuit can enter the hydraulic pump normally, and no reverse flow phenomenon will occur. A two-position two-way valve 1-3 is also installed between the filter 1-2 and the one-way valve 1-4 to control the oil circuit. The two-position two-way valve 1-3 can effectively control the flow of the oil circuit. Opening and closing. The oil flows into the hydraulic motor 1-7 through the oil circuit. The hydraulic motor can stably push the air paddle to rotate and ensure that the speed of the air paddle is greater than that of the marine paddle. In order to ensure the working power of the hydraulic motor 1-7, when the oil is not Before entering the hydraulic motor, the speed regulating valve 1-6 is used, and the speed of the air paddle realized by the speed regulating valve 1-6 is greater than the speed of the marine paddle, so as to ensure the efficiency of its transmission and achieve the speed requirement by controlling the flow of oil.

The gear pump 1-5 is closely connected with the shaft 2-3, the diesel engine pushes the shaft 2-3 to rotate, and the gear pump 1-5 is located on the shaft 2-3.

The working process of the entire hydraulic system is that the oil 1-1 is drawn out of the oil tank, filtered by the filter 1-2, and then flows into the check valve 1-4, and then flows into the gear pump 1-5. The oil flows out of the gear pump 1-5 and then reaches the speed regulating valve 1-6 through the oil circuit. After the flow is controlled, the oil enters the hydraulic motor 1-7. The hydraulic motor 1-7 pushes the propeller to rotate, and after the pressure relief valve 1-8, the oil flows into the oil tank through the circuit, and a project is completed at this time.

The filter 1-2 is connected with the oil circuit in a non-fastened manner and can be disassembled. It is convenient for daily cleaning and maintenance work. The hydraulic system does not affect the efficiency of the marine propeller during the entire transmission process.

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

In order to ensure the maximum efficiency of transmission, the marine propeller and the air propeller are arranged in a vertical direction. Because the gear pump 1-5 has the possibility of trapping oil, the gear pump 1-5 opens an oil discharge groove on the side of the gear meshing place to the oil discharge chamber, so that the oil trapped in the two teeth can be removed, and the stability of the working system is ensured .

Although the present invention has been disclosed above with preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the protection scope of the claims of the present application.

Claims (6)

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.

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