A system for injecting ballast into the bottom of a domestic vessel

Abstract

The application discloses a kind of domestic ship bottom ballast injection systems, increase a vertical ballast pipe at ballast main pipe and ballast branch pipe position, vertical ballast pipe is communicated with ballast main pipe and ballast branch pipe;The opening of vertical ballast pipe lower end is aligned with the outer surface of ship hull shell plate to be connected into external water body, and the opening of vertical ballast pipe upper end is connected with the internal space of ship body above inner bottom plate;Grid cover is provided at the lower end of vertical ballast pipe to filter larger particle impurities in ballast water;Remote control valve one is provided above grid cover, to control the communication state of vertical ballast pipe and external water area;Removable filter screen is provided above remote control valve one, to filter smaller particle impurities in ballast water;Water-tight plug is provided at the upper end of vertical ballast pipe.The gravity potential energy generated by the difference between the water level outside the ship and the bottom ballast tank is used to realize the auxiliary power-free injection of the bottom ballast tank of the ship, without starting the ballast pump, thereby saving energy consumption, improving the energy efficiency of the ship, and multiple bottom ballast tanks can be injected simultaneously.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and more specifically, to a bottom ballast injection system for domestic trade vessels. Background Technology

[0002] For general heavy-duty ships, after unloading, a certain amount of ballast water needs to be injected into the ballast tanks during empty voyages to ensure good buoyancy and stability. For conventional domestic cargo ships, especially dry cargo ships, regulations require a double bottom, with bottom ballast tanks within the double bottom area. A pipe tunnel is located midway for arranging the ballast water main, sweeping water pipes, and bilge water pipes. The pipe tunnel typically divides the bottom ballast tanks into left and right bottom ballast tanks. The ballast water main basically runs through the entire double bottom area, with ballast branch pipes leading to each ballast tank, and corresponding remote control valves for opening and closing the ballast pipe passages. The ballast main ultimately connects to the engine room ballast water pump, which controls the injection and discharge of water from the ballast tanks. The operation of the ballast pump consumes the ship's electricity.

[0003] The disadvantage of existing technology is that it requires the ship's own electricity to carry out the ballast water injection operation. In addition, the more ballast water there is, the larger the displacement of the ballast pump needs to be. When injecting ballast water, the existing technology is limited by the displacement of the ballast pump and can only be used for one or a pair of compartments. Summary of the Invention

[0004] The purpose of this invention is to provide a bottom ballast injection system for domestic trade vessels to solve the above-mentioned technical problems.

[0005] The objective of this invention is achieved as follows: a bottom ballast injection system for domestic trade vessels, comprising a ballast pump, a ballast main pipe, and several ballast branch pipes, wherein the ballast pump is connected to the ballast main pipe, the ballast main pipe is connected to the ballast branch pipes, and the ballast branch pipes are connected to the bottom ballast tanks one by one;

[0006] The system also includes several vertical ballast pipes that are vertically connected to the ballast branch pipes. The main ballast pipe is connected to the vertical ballast pipes, the ballast branch pipes are connected to the vertical ballast pipes, and the upper and lower ends of the vertical ballast pipes are fixedly connected to the bottom plate inside the ship and the outer shell plate of the ship, respectively.

[0007] The lower end of the vertical ballast pipe is fixedly equipped with a grid cover for filtering larger particulate impurities in the ballast water and is connected to the external water area.

[0008] The vertical ballast pipe is equipped with a remote control valve 1 located above the grating cover. The remote control valve 1 is used to control the connection status between the vertical ballast pipe and the external water area. The position of the remote control valve 1 is lower than the water inlet end of the ballast branch pipe and the connection port between the ballast main pipe and the vertical ballast pipe.

[0009] Furthermore, the vertical ballast pipe is equipped with a filter screen for filtering smaller particulate impurities in the ballast water. The filter screen is located above the remote control valve and is positioned below the inlet of the ballast branch pipe and the connection port between the ballast main pipe and the vertical ballast pipe.

[0010] Furthermore, the filter screen is detachably installed in the pipeline of the vertical ballast pipe, and the upper end of the vertical ballast pipe is detachably encapsulated with a watertight valve; when the filter screen needs to be replaced, the watertight valve is separated from the upper end of the vertical ballast pipe so that the upper end of the vertical ballast pipe communicates with the internal space of the hull above the bottom plate of the hull.

[0011] The ballast branch pipe is equipped with a second remote control valve, which is used to control the opening and closing status of the ballast branch pipe. When the filter screen needs to be replaced, both the first and second remote control valves are in the closed state. When ballast water is introduced into the bottom ballast tank, both the first and second remote control valves are in the open state, and the watertight stopcock seals the upper end of the vertical ballast pipe.

[0012] The beneficial effects of this invention are as follows:

[0013] By utilizing the gravitational potential energy generated by the height difference between the external water level and the bottom ballast tanks, the bottom ballast tanks of the ship can be injected without auxiliary power. There is no need to start the ballast pump, thus saving energy consumption, improving the energy efficiency of the ship, and multiple bottom ballast tanks can be injected at the same time. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention.

[0015] Figure 2 This is the overall system layout diagram of the present invention. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-2 The present invention will be further illustrated by specific embodiments.

[0017] like Figure 1-2 As shown, a bottom ballast injection system for domestic trade vessels is proposed, including a ballast pump 1, a ballast main pipe 2, and several ballast branch pipes 9. The ballast pump 1 is connected to the ballast main pipe 2, and the ballast main pipe 2 is connected to the ballast branch pipes 9. Each ballast branch pipe 9 is connected to a bottom ballast tank. The ballast branch pipes 9 are L-shaped bends and are equipped with port portions 9a that communicate with the bottom ballast tanks.

[0018] like Figure 2As shown, there are two ballast pumps 1 (the exact number is not limited), corresponding to the left and right ballast mains 2. Each ballast main 2 corresponds to multiple ballast branch pipes 9. The ballast mains 2 are located in the pipe tunnel 10. The left and right sides of the pipe tunnel 10 are the left bottom ballast tank 11 and the right bottom ballast tank 12, respectively. There are multiple left bottom ballast tanks 11 and multiple right bottom ballast tanks 12. The ballast branch pipes 9 are connected to these bottom ballast tanks one by one. The pipe tunnel 10, the left bottom ballast tank 11 and the right bottom ballast tank 12 are all located between the bottom plate 13 of the hull and the bottom of the outer shell plate 14. This is a common knowledge setting.

[0019] To address the shortcomings of existing technologies, the system also includes several vertical ballast pipes 3 that are vertically aligned and correspond one-to-one with the ballast branch pipes 9. The ballast main pipe 2 is connected to the vertical ballast pipes 3, and the ballast branch pipes 9 are connected to the vertical ballast pipes 3. The upper and lower ends of the vertical ballast pipes 3 are respectively fixedly connected to the bottom plate 13 inside the ship and the outer shell plate 14 of the ship.

[0020] The lower end of the aforementioned vertical ballast pipe 3 is fixedly equipped with a grid cover 5 for filtering larger particulate impurities in the ballast water and is connected to the external water area.

[0021] The aforementioned vertical ballast pipe 3 is equipped with a remote control valve 6 located above the grid cover 5. The remote control valve 6 is used to control the connection status between the vertical ballast pipe 3 and the external water area. The position of the remote control valve 6 is lower than the water inlet end of the ballast branch pipe 9 and the connection port between the ballast main pipe 2 and the vertical ballast pipe 3.

[0022] The vertical ballast pipe 3 is equipped with a filter screen 7 for filtering smaller particulate impurities in the ballast water. The filter screen 7 is located above the remote control valve 6, and the position of the filter screen 7 is lower than the water inlet end of the ballast branch pipe 9 and the connection port between the ballast main pipe 2 and the vertical ballast pipe 3.

[0023] The filter screen 7 is detachably installed in the pipeline of the vertical ballast pipe 3. The upper end of the vertical ballast pipe 3 is detachably encapsulated with a watertight valve 4. When the filter screen 7 needs to be replaced, the watertight valve 4 is separated from the upper end of the vertical ballast pipe 3 so that the upper end of the vertical ballast pipe 3 is connected to the internal space of the hull above the bottom plate 13 of the hull.

[0024] The aforementioned ballast branch pipe 9 is equipped with a remote control valve 2 8, which is used to control the opening and closing status of the ballast branch pipe 9. When the filter screen 7 needs to be replaced, both remote control valve 1 6 and remote control valve 2 8 are in the closed state. When ballast water is introduced into the bottom ballast tank, both remote control valve 1 6 and remote control valve 2 8 are in the open state, and the watertight stopcock 4 seals the upper end of the vertical ballast pipe 3.

[0025] The new bottom ballast injection system for domestic trade vessels can be used in new ship construction as well as for retrofitting existing ship ballast systems. Cross-sectional and top views are shown below. Figure 1 and Figure 2 As shown.

[0026] In this embodiment, the structural setup is roughly as follows: A vertical ballast pipe 3 is added at the positions of the ballast main pipe 2 and the ballast branch pipe 9, and the vertical ballast pipe 3 is connected to the ballast main pipe 2 and the ballast branch pipe 9; the opening at the lower end of the vertical ballast pipe 3 is aligned with the outer surface of the hull shell plate 14 to allow access to the external water body, and the opening at the upper end of the vertical ballast pipe 3 is connected to the internal space of the hull above the bottom plate 13; a grid cover 5 is provided at the lower end of the vertical ballast pipe 3 to filter larger particulate impurities in the ballast water; a remote control valve 6 is provided above the grid cover 5 to control the connection status between the vertical ballast pipe 3 and the external water body; a removable filter screen 7 is provided above the remote control valve 6 to filter smaller particulate impurities in the ballast water; and a watertight stopcock 4 is provided at the upper end of the vertical ballast pipe 3.

[0027] When ballast water needs to be injected during the unloading process of the ship, the remote control valve 6 on the vertical ballast pipe 3 and the remote control valve 8 on the ballast branch pipe 9 are opened by remote control. The watertight plug 4 blocks the upper end of the vertical ballast pipe 3. At this time, under the pressure of the external water body, the external water body is automatically injected into the bottom ballast tank through the vertical ballast pipe 3. During the injection process, the ballast water passes through the grid cover 5 and the filter screen 7 in sequence to filter out larger and smaller particulate impurities in the external water body.

[0028] When the ship needs to perform drainage operations, the remote control valve 6 at the bottom of the vertical ballast pipe 3 is closed, and the remote control valve 8 at the bottom of the ballast branch pipe 9 is opened. The water in the ballast tank is discharged through the ballast main pipe 2 (ballast pump 1 is started to suck it up). The ballast water in the bottom ballast tank is discharged in sequence through the ballast branch pipe 9, the vertical ballast pipe 3, and the ballast main pipe 2.

[0029] When it is necessary to maintain and clean the silt and sand in the vertical ballast pipe 3, it is necessary to close the remote control valve 6 and the remote control valve 8, remove the watertight stopcock 4, and remove the filter screen 7 below.

[0030] The above are preferred embodiments of the present invention. Those skilled in the art can make various modifications or improvements based on these embodiments. Without departing from the overall concept of the present invention, such modifications or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A bottom ballast injection system for domestic trade vessels, characterized in that, It includes a ballast pump (1), a ballast main pipe (2), and several ballast branch pipes (9). The ballast pump (1) is connected to the ballast main pipe (2), the ballast main pipe (2) is connected to the ballast branch pipes (9), and the ballast branch pipes (9) are connected to the bottom ballast tanks one by one. The system is characterized by including several vertical ballast pipes (3) that are vertically aligned with the ballast branch pipes (9), the ballast main pipe (2) is connected to the vertical ballast pipes (3), the ballast branch pipes (9) are connected to the vertical ballast pipes (3), and the upper and lower ends of the vertical ballast pipes (3) are fixedly connected to the bottom plate (13) of the ship's interior and the outer shell plate (14) of the ship's exterior, respectively. The lower end of the vertical ballast pipe (3) is fixedly equipped with a grid cover (5) for filtering larger particles of impurities in the ballast water and is connected to the outside water area. The vertical ballast pipe (3) is equipped with a remote control valve (6) located above the grid cover (5). The remote control valve (6) is used to control the connection status between the vertical ballast pipe (3) and the external water area. The position of the remote control valve (6) is lower than the water inlet end of the ballast branch pipe (9) and the connection port between the ballast main pipe (2) and the vertical ballast pipe (3). The vertical ballast pipe (3) is equipped with a filter screen (7) for filtering smaller particulate impurities in the ballast water. The filter screen (7) is located above the remote control valve (6), and the position of the filter screen (7) is lower than the water inlet of the ballast branch pipe (9) and the connection port between the ballast main pipe (2) and the vertical ballast pipe (3). The filter screen (7) is detachably installed in the pipeline of the vertical ballast pipe (3), and the upper end of the vertical ballast pipe (3) is detachably encapsulated with a watertight valve (4); when the filter screen (7) needs to be replaced, the watertight valve (4) is separated from the upper end of the vertical ballast pipe (3) so that the upper end of the vertical ballast pipe (3) is connected to the internal space of the hull above the bottom plate (13) of the hull.

2. The ballast injection system for the bottom of domestic trade vessels according to claim 1, characterized in that: The ballast branch pipe (9) is equipped with a remote control valve (8), which is used to control the opening and closing state of the ballast branch pipe (9).

3. The ballast injection system for the bottom of domestic trade vessels according to claim 2, characterized in that: When the filter screen (7) needs to be replaced, both remote control valve one (6) and remote control valve two (8) are in the closed state.

4. The ballast injection system for the bottom of domestic trade vessels according to claim 2, characterized in that: When ballast water is introduced into the bottom ballast tank, both remote control valve one (6) and remote control valve two (8) are in the open state, and the watertight stopcock (4) blocks the upper end of the vertical ballast pipe (3).

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