A ship ballast system

Abstract

The utility model provides a ship ballast system, which includes an air compressor, an air bag charging and discharging pipeline, a compressor charging and discharging pipeline, etc. A lower-cost air compressor is used to replace the expensive ballast pump and ballast water treatment device, and compressed air is used as a medium to reduce the size of the pipeline. The ballast tank is open and has an air bag with expansion and contraction function built in. The buoyancy of the ship is adjusted by the expansion and contraction of the air bag. There is no need to equip air pipes and structural reinforcement, which reduces the weight of the ship and has the advantages of low cost and light weight.

Description

Technical Field

[0001] The utility model relates to a ship ballast system, in particular to a ship ballast system. Background Art

[0002] The marine ballast system is an indispensable part of ship engineering. It is responsible for adjusting the buoyancy of the ship and ensuring the stability and safety of the ship under various operating conditions. The ballast system usually consists of a ballast pump, ballast water treatment device, ballast pipelines, and control valves to each ballast tank. The closed ballast tank also needs to take seawater pressure into consideration, so it needs to be equipped with air pipes and other devices.

[0003] During the operation of the ship, the buoyancy of the ship needs to be adjusted according to different working conditions and requirements. For this purpose, the ship is equipped with several closed ballast tanks. These tanks can effectively adjust the buoyancy of the ship by controlling the amount of water in them to meet different needs such as navigation, mooring and operation.

[0004] The existing ship ballast system usually has two ballast pumps with a displacement of several hundred cubic meters, and a ballast water treatment device that is consistent with the displacement of the ballast pump is configured in accordance with the specifications. These devices play a key role in the ship's ballasting process, ensuring the smooth injection and discharge of seawater.

[0005] When seawater needs to be injected into the ballast tank, the ballast pump draws seawater from the seawater main pipe, and after being treated by the ballast water treatment device, it is transported to the ballast tank through the ballast pipeline. A control valve is installed on the ballast pipeline of each ballast tank to accurately control the amount of seawater entering the ballast tank.

[0006] When it is necessary to discharge seawater, the ballast pump sucks the seawater in the ballast tank and discharges it overboard through the discharge pipeline. In this process, the efficient operation of the ballast pump and the smoothness of the discharge pipeline are crucial to ensure that the ship can quickly adjust its floating state.

[0007] To ensure the normal operation of the ballast system, the ballast tank needs to be equipped with air pipes with an area 1.25 times the size of the ballast pipeline. These air pipes play a key role in the ship's navigation. They can balance the pressure in the ballast tank and ensure that the ballast pump can pump seawater normally.

[0008] However, existing ship ballast systems also face some challenges and limitations. First, the cost of ballast pumps and treatment equipment is high, which increases the manufacturing and maintenance costs of ships. Second, ballast pipelines are usually large in size, which not only occupies valuable space resources on ships, but also increases the difficulty of ship pipeline layout. In addition, the air pipe needs to be set according to 1.26 times the area of ​​the ballast pipeline size, which further increases the cost and layout difficulty.

[0009] Another challenge is that the closed ballast tanks need to withstand extremely high pressures. In order to ensure the structural safety of the tanks, structural reinforcement measures must be considered, which usually increases the weight of the ship and thus affects the performance indicators of the ship.

[0010] Therefore, during the ship design phase, it is necessary to comprehensively consider the balance between the optimization of the ballast system and the overall performance of the ship. Utility Model Content

[0011] The ship ballast system plays an important role in ship engineering. It adjusts the floating state of the ship by adjusting the amount of water in the ballast tank to ensure the stability and safety of the ship under various working conditions. However, the existing ballast system still faces some technical and economic challenges. This application provides a new ship ballast system to reduce costs, improve efficiency and reliability, and ensure the overall performance and safety of the ship. The specific plan is as follows:

[0012] A ship ballast system, the ship ballast system includes a ballast tank, a side wall of the ballast tank is provided with a plurality of water holes connected to seawater, the ship ballast system also includes an air compressor, the air compressor is connected to an air bag arranged in the ballast tank through an air bag charging and discharging pipeline, a fifth remote control valve and a second remote control valve respectively close to the air compressor and the air bag are provided on the air bag charging and discharging pipeline, the air compressor is connected to the atmosphere through the compressor charging and discharging pipeline, and a fourth remote control valve is provided on the compressor charging and discharging pipeline;

[0013] An airbag exhaust pipeline is also provided on the airbag inflation and deflation pipeline, one end of the airbag exhaust pipeline is connected to the airbag inflation and deflation pipeline between the air compressor and the fifth remote control valve, and the other end of the airbag exhaust pipeline is connected to the atmosphere, and a first remote control valve is provided on the airbag exhaust pipeline;

[0014] An exhaust branch pipeline is connected in parallel to the compressor charging and discharging pipeline and the airbag charging and discharging pipeline. One end of the exhaust branch pipeline is connected to the compressor charging and discharging pipeline, and the other end of the exhaust branch pipeline is connected between the fifth remote control valve and the second remote control valve. A third remote control valve is provided on the exhaust branch pipeline.

[0015] Furthermore, the inner wall of the airbag is provided with a honeycomb supporting mechanism.

[0016] Furthermore, the outer surface of the airbag is provided with an anti-corrosion coating.

[0017] A ship ballast control method as described above, the ship ballast control method includes the following three working modes:

[0018] 1) Ballast discharge mode: the first remote control valve and the third remote control valve are closed, the fourth remote control valve, the fifth remote control valve and the second remote control valve are opened, the air compressor extracts the atmosphere and generates high-pressure gas, the high-pressure gas enters the airbag through the airbag charging and discharging pipe, the airbag expands in the ballast tank and squeezes the ballast water into the sea, after the airbag expands to the specified volume, the second remote control valve is closed to keep the existing buoyancy of the airbag, the buoyancy of the airbag is transmitted to the hull and provides buoyancy for the ship;

[0019] 2) Ordinary ballast water filling mode: close the third remote control valve and the fourth remote control valve, open the fifth remote control valve, the second remote control valve and the first remote control valve. At this time, under the pressure of seawater, there is no need to start the air compressor. The air inside the airbag is discharged from the airbag exhaust pipe to shrink the airbag, and seawater enters the ballast tank to reduce the buoyancy of the ship, thereby achieving the purpose of ballasting;

[0020] 3) Rapid ballast filling mode: open the third remote control valve, the second remote control valve, and the first remote control valve, and close the fourth remote control valve and the fifth remote control valve. The compressed air in the air bag is discharged through the air compressor, thereby accelerating the discharge speed of the compressed air, and seawater enters the ballast tank to reduce the buoyancy of the ship, thereby achieving the purpose of ballasting.

[0021] In view of the above problems, the utility model uses a lower-cost air compressor to replace the expensive ballast pump and ballast water treatment device; the size of the pipeline using compressed air as the medium is greatly reduced; the ballast tank is open, and an air bag with expansion and contraction function is used as the "liner" of the ballast tank. The expansion and contraction of the air bag provides buoyancy for the ship and adjusts the floating state of the ship. The ballast tank does not need to be equipped with an air pipe, and there is no need to consider structural reinforcement. Thereby reducing the weight of the ship, it has the advantages of low cost and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is a schematic diagram of a ship ballast system of the utility model;

[0024] Figure 2 It is a schematic diagram of the ballast drainage mode of the utility model;

[0025] Figure 3 It is a schematic diagram of the common ballast water inlet mode of the utility model;

[0026] Figure 4It is a schematic diagram of the rapid ballast water filling mode of the utility model. DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0028] In order to thoroughly understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0029] Reference Figure 1 As shown, the utility model provides a ship ballast system, the ship ballast system includes a ballast tank, a plurality of water holes are opened on the side wall of the ballast tank, the ship ballast system also includes an air compressor 6, the air compressor 6 is connected to an air bag 7 arranged in the ballast tank through an air bag charging and discharging pipeline 10, a fifth remote control valve 5 and a second remote control valve 2 are respectively provided on the air bag charging and discharging pipeline 10, the air compressor 6 is connected to the atmosphere through a compressor charging and discharging pipeline 20, and a fourth remote control valve 4 is provided on the compressor charging and discharging pipeline 20;

[0030] An airbag exhaust pipeline 30 is also provided on the airbag inflation and deflation pipeline 10. One end of the airbag exhaust pipeline 30 is connected to the airbag inflation and deflation pipeline 10 between the air compressor 6 and the fifth remote control valve 5. The other end of the airbag exhaust pipeline 30 is connected to the atmosphere. A first remote control valve 1 is provided on the airbag exhaust pipeline 30.

[0031] The compressor charging and discharging pipeline 20 and the airbag charging and discharging pipeline 10 are connected in parallel with an exhaust branch pipeline 40, one end of the exhaust branch pipeline 40 is connected to the compressor charging and discharging pipeline 20, and the other end of the exhaust branch pipeline 40 is connected between the fifth remote control valve 5 and the second remote control valve 2, and a third remote control valve 3 is provided on the exhaust branch pipeline 40.

[0032] In an optional embodiment, the airbag 7 is made of a corrosion-resistant and strong material and can expand and contract under pressure.

[0033] The inner wall of the airbag 7 is provided with a honeycomb support mechanism, and the outer surface of the airbag 7 is provided with an anti-corrosion coating.

[0034] The ship ballast control method of the utility model includes the following three working modes:

[0035] 1. Ballast drainage mode

[0036] like Figure 2 As shown, the first remote control valve 1 and the third remote control valve 3 are closed, the fourth remote control valve 4, the fifth remote control valve 5 and the second remote control valve 2 are opened, the air compressor 6 draws air from the atmosphere and generates high-pressure gas, the high-pressure gas enters the airbag 7 through the airbag filling and discharging pipe, the airbag 7 expands in the ballast tank and squeezes the ballast water into the sea, and after the airbag 7 expands to a specified volume, the second remote control valve 2 is closed to allow the airbag 7 to maintain the existing buoyancy, and the buoyancy of the airbag 7 is transmitted to the hull and provides buoyancy for the ship.

[0037] 2. Normal ballast water inlet mode

[0038] like Figure 3 As shown, the third remote control valve 3 and the fourth remote control valve 4 are closed, and the fifth remote control valve 5, the second remote control valve 2 and the first remote control valve 1 are opened. At this time, under the pressure of seawater, there is no need to start the air compressor 6. The air inside the airbag 7 is discharged from the airbag exhaust pipe 30 to shrink the airbag, and seawater enters the ballast tank to reduce the buoyancy of the ship, thereby achieving the purpose of ballasting.

[0039] 3. Rapid ballast water filling mode

[0040] like Figure 4 As shown, the third remote control valve 3, the second remote control valve 2, and the first remote control valve 1 are opened, and the fourth remote control valve 4 and the fifth remote control valve 5 are closed. The compressed air in the air bag 7 is discharged through the air compressor 6, thereby accelerating the discharge speed of the compressed air, and seawater enters the ballast tank, reducing the buoyancy of the ship, thereby achieving the purpose of ballasting.

[0041] Since there is no ballast water exchange in different sea areas, there is no need to consider the pollution of ballast water, and there is no need to set up ballast water treatment equipment. At the same time, in order to reduce the impact of the damage of a certain airbag, the airbag adopts a honeycomb shape, and a check measure is taken at the inlet and outlet to automatically prevent water from entering other areas after water enters. Since the ballast tank is connected to the outside seawater, there is no need to consider setting up an air pipe.

[0042] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A ship ballast system, comprising a ballast tank, characterized in that: The side wall of the ballast tank is provided with a plurality of water holes connected to seawater. The ship ballast system also includes an air compressor (6). The air compressor (6) is connected to an air bag (7) arranged in the ballast tank through an air bag charging and discharging pipeline (10). A fifth remote control valve (5) and a second remote control valve (2) are arranged on the air bag charging and discharging pipeline (10), which are close to the air compressor (6) and the air bag respectively. The air compressor (6) is connected to the atmosphere through a compressor charging and discharging pipeline (20). A fourth remote control valve (4) is arranged on the compressor charging and discharging pipeline (20). An airbag exhaust pipeline (30) is also provided on the airbag inflation and deflation pipeline (10), one end of the airbag exhaust pipeline (30) is connected to the airbag inflation and deflation pipeline (10) between the air compressor (6) and the fifth remote control valve (5), and the other end of the airbag exhaust pipeline (30) is connected to the atmosphere. A first remote control valve (1) is provided on the airbag exhaust pipeline (30); An exhaust branch pipeline (40) is connected in parallel to the compressor charging and discharging pipeline (20) and the airbag charging and discharging pipeline (10); one end of the exhaust branch pipeline (40) is connected to the compressor charging and discharging pipeline (20); the other end of the exhaust branch pipeline (40) is connected between the fifth remote control valve (5) and the second remote control valve (2); and a third remote control valve (3) is provided on the exhaust branch pipeline (40).

2. A ship ballast system according to claim 1, characterized in that: The inner wall of the air bag (7) is provided with a honeycomb supporting mechanism.

3. A ship ballast system according to claim 1, characterized in that: The outer surface of the airbag (7) is provided with an anti-corrosion coating.

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