Novel liquid cargo ship for preventing sediment deposition in ballast tanks of a ship

Abstract

The utility model relates to ship technology field provides a novel liquid cargo ship of ship ballast tank silt deposition, including ship engine room and double -deck ship shell, the inside fixed has the side ballast tank of double -deck ship shell. The utility model discloses is provided with filter and backflushing structure, and the seawater silt after filter bowl filtration and marine biological content will reduce greatly, and backflushing pump can avoid the blockage by the mud of filter element in filter bowl and wash into the sea, through multiple filtration and the double technology of initiative forced deposition, make the liquid cargo ship of coastal sea area that often enters seawater turbidity when carrying out ballast water control operation, can effectively avoid the side ballast tank and the bottom ballast tank due to silt and the deposition of suspended organism in and lead to the major loss such as load reduction, component structure corrosion, realize the device has the function of convenient multiple filtration and backflushing, improved the convenience and work efficiency of the novel liquid cargo ship of ship ballast tank silt deposition when using.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and in particular to a novel liquid cargo ship for preventing sediment deposition in ballast tanks. Background Technology

[0002] According to the SOLAS Convention, a liquid cargo ship refers to a cargo ship used for the bulk transport of flammable liquids. When a liquid cargo ship enters coastal areas, turbid seawater needs to enter the ballast tanks through the ballast system. The silt and planktonic marine organisms contained in the ballast water also enter and deposit. Over time, this sediment forms a thick layer of sludge at the bottom of the ballast tanks in traditionally designed ships, which is difficult to remove with the ballast water. This foreign, fixed ballast material reduces the ship's carrying capacity and severely corrodes the ship's structure. Dredging work needs to be carried out regularly at shipyards. Workers must painstakingly climb into the narrow interior of the ballast tanks, risking the accumulation of flammable gases from the decaying marine life, to remove the foul-smelling sludge using mud pumps and manual shoveling. Although some methods of settling have been used to slightly reduce the impact of silt deposition, the high exchange rate of ballast water makes it difficult to allow sediment to settle in designated ballast tanks for extended periods, resulting in less than ideal practical results.

[0003] In addition, some ships use filtration-type ballast water treatment systems, which are equipped with special inert gas generators to kill marine organisms in the seawater. However, the problems of sediment deposition and dead marine organism deposition have not been completely solved. Therefore, it is necessary to design a new type of liquid cargo ship that prevents sediment deposition in the ballast tank. Utility Model Content

[0004] The purpose of this invention is to provide a new type of liquid cargo ship that prevents silt deposition in ballast tanks, thereby solving the problem that existing new liquid cargo ships are inconvenient to handle silt deposition and the deposition of dead marine organisms.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a new type of liquid cargo ship for preventing sediment deposition in ballast tanks, including a ship engine room and a double hull; The double-hulled structure has a side ballast tank fixed inside, and a bottom ballast tank is fixed at the bottom of the side ballast tank. The inner side of the ship's engine room is equipped with a ballast water forced sedimentation device. A filtration and backwashing structure is provided on one side of the bottom of the ship's engine room. The filtration and backwashing structure includes a filter cartridge fixed to one side of the bottom of the ship's engine room. A backwashing pump is fixedly installed at the top of the filter cartridge. A water inlet is fixedly installed at the bottom of the filter cartridge. A differential pressure sensor is installed inside the filter cartridge. A cargo hold is located on one side of the bottom filter and backwashing structure of the ship's engine room, and an inert gas generator and injection device is fixed on one side of the top of the ship's engine room.

[0006] Preferably, the ballast water forced sedimentation device is located inside the ship's engine room, near the ship's seawater inlet.

[0007] Preferably, the inlet is fixed with a pipeline at its input end.

[0008] Preferably, a microcontroller is fixed inside the differential pressure sensor, and the output terminal of the differential pressure sensor and the input terminal of the backwash pump are electrically connected through the microcontroller.

[0009] Preferably, the inert gas generating and injecting device includes an inert gas generator, a connecting pipe, a control valve, a gas storage tank, and an injection pipe. The inert gas generator is fixed to one side of the top of the ship's engine room, and a gas storage tank is provided on one side of the inert gas generator.

[0010] Preferably, the inert gas generator has connecting pipes evenly fixed on the side near the gas storage tank, and each connecting pipe is equipped with a control valve. Both ends of the gas storage tank are fixed with injection pipes.

[0011] Preferably, one end of the injection pipe is fixedly connected to the input end of the cargo hold.

[0012] This utility model provides a novel liquid cargo ship for preventing silt deposition in ballast tanks, which has the following advantages: By incorporating a filtration and backwashing structure, the content of seawater sediment and marine organisms after filtration through the filter cartridge is significantly reduced. The backwashing pump can flush the sludge in the filter element into the sea to prevent clogging. Through the dual processes of multiple filtration and active forced sedimentation, liquid cargo ships that frequently enter turbid coastal waters can effectively avoid significant losses such as reduced load capacity and corrosion of components caused by sediment and suspended organisms in the side and bottom ballast tanks when performing ballast water regulation operations. In particular, it actively avoids the dangerous and harsh working environment during dredging operations during shipyard maintenance. This device enables multiple filtration and backwashing, improving the convenience and efficiency of the new type of liquid cargo ship designed to prevent sediment deposition in ballast tanks. By incorporating an inert gas generator and injection device, inert gas is introduced into the interior of the cargo hold via a control valve, reducing the oxygen concentration inside the cargo hold, inhibiting the survival of marine organisms, and simultaneously reducing the risk of explosion from flammable gases. Combined with a filtration system, this achieves a dual "biological + physical" treatment, enabling the device to provide convenient safety protection for the interior of the cargo hold and improving the safety of this new type of liquid cargo ship designed to prevent ballast tank sediment deposition during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure and layout principle of this utility model; Figure 2 This is a schematic diagram of the filtration process of this utility model; Figure 3 This is a schematic diagram of the forced sedimentation process of this utility model; Figure 4 This is a schematic diagram illustrating the principle of the inert gas generator of this utility model. Figure 5 This is an enlarged schematic diagram of the filtration and backwashing structure of this utility model; Figure 6 This is an enlarged schematic diagram of the inert gas generating and injecting device of this utility model.

[0014] The following are the annotations in the figure: 1. Ship engine room; 2. Double hull; 3. Side ballast tank; 4. Bottom ballast tank; 5. Ballast water forced sedimentation device; 6. Filtration and backwashing structure; 61. Backwashing pump; 62. Filter cartridge; 63. Water inlet; 64. Differential pressure sensor; 7. Cargo hold; 8. Inert gas generator and injection device; 81. Inert gas generator; 82. Connecting pipe; 83. Control valve; 84. Gas storage tank; 85. Injection pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-6 This utility model provides a novel liquid cargo ship for preventing sediment deposition in ballast tanks, comprising a ship engine room 1 and a double hull 2.

[0017] Reference Figures 1-6 As shown, a side ballast tank 3 is fixed inside the double-hulled hull 2, and a bottom ballast tank 4 is fixed at the bottom end of the side ballast tank 3. A ballast water forced sedimentation device 5 is installed inside the ship's engine room 1. A filtration and backwashing structure 6 is installed on one side of the bottom of the ship's engine room 1. The filtration and backwashing structure 6 includes a filter cartridge 62 fixed to one side of the bottom of the ship's engine room 1. A backwashing pump 61 is fixedly installed at the top of the filter cartridge 62. A water inlet 63 is fixedly installed at the bottom end of the filter cartridge 62. A differential pressure sensor 64 is installed inside the filter cartridge 62. A microcontroller is fixed inside the differential pressure sensor 64. The output end of the differential pressure sensor 64 and the input end of the backwashing pump 61 are electrically connected through the microcontroller. A pipeline is fixed at the input end of the water inlet 63. The ballast water forced sedimentation device 5 is located inside the ship's engine room 1 and is arranged near the ship's seawater inlet.

[0018] Ballast water enters from the seawater inlet and flows through the filter cartridge 62, where particulate matter is trapped. When the filter becomes clogged, the pressure difference inside the filter cartridge 62 increases. The inlet 63 detects the pressure difference and automatically starts the backwash pump 61 through its internal single plate. It uses reverse water flow or compressed air to flush the filter screen, flushing the sediment back into the seawater or into the collection device, thus achieving unattended intelligent cleaning.

[0019] Reference Figures 1-6 As shown, a cargo hold 7 is provided on one side of the bottom filter and backwashing structure 6 of the ship's engine room 1. An inert gas generating and injecting device 8 is fixed on one side of the top of the ship's engine room 1. The inert gas generating and injecting device 8 includes an inert gas generator 81, a connecting pipe 82, a control valve 83, a gas storage tank 84, and an injection pipe 85. The inert gas generator 81 is fixed on one side of the top of the ship's engine room 1. A gas storage tank 84 is provided on one side of the inert gas generator 81. Connecting pipes 82 are evenly fixed on the side of the inert gas generator 81 near the gas storage tank 84. A control valve 83 is provided inside each connecting pipe 82. Injection pipes 85 are fixed at both ends of the gas storage tank 84. One end of the injection pipe 85 is fixedly connected to the input end of the cargo hold 7.

[0020] The inert gas generated by the inert gas generator 81 is injected into the side ballast tank 3 and the bottom ballast tank 4 through the connecting pipe 82, the gas storage tank 84 and the injection pipe 85, and mixed with the air inside the tank. By installing oxygen content sensors on the inside of the side ballast tank 3 and the bottom ballast tank 4, the oxygen concentration inside the tank is monitored, and the gas injection volume is automatically adjusted to maintain a low-oxygen environment during the ballast water settling or storage, and to prevent biological recovery or corrosion.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel liquid cargo ship for preventing sediment deposition in ballast tanks, comprising a ship engine room (1) and a double hull (2). Its features are: The double-hulled hull (2) has a side ballast tank (3) fixed inside, and a bottom ballast tank (4) is fixed at the bottom end of the side ballast tank (3). The inner side of the ship's engine room (1) is provided with a ballast water forced sedimentation device (5), and a filtration and backwashing structure (6) is provided on one side of the bottom of the ship's engine room (1). The filtration and backwashing structure (6) includes a filter cartridge (62) fixed to one side of the bottom of the ship's engine room (1). A backwashing pump (61) is fixedly installed at the top of the filter cartridge (62), and a water inlet (63) is fixedly installed at the bottom of the filter cartridge (62). A differential pressure sensor (64) is installed inside the filter cartridge (62). A cargo hold (7) is provided on one side of the bottom filter and backwashing structure (6) of the ship's engine room (1), and an inert gas generator and injection device (8) is fixed on one side of the top of the ship's engine room (1).

2. A novel liquid cargo ship for preventing ballast tank sediment deposition according to claim 1, characterized in that: The ballast water forced sedimentation device (5) is located inside the ship's engine room (1) and is arranged near the ship's seawater inlet.

3. A novel liquid cargo ship for preventing ballast tank sediment deposition as described in claim 1, characterized in that: The inlet (63) has a fixed pipe at its input end.

4. A novel liquid cargo ship for preventing silt deposition in ballast tanks according to claim 1, characterized in that: The differential pressure sensor (64) has a microcontroller fixed inside, and the output end of the differential pressure sensor (64) and the input end of the backwash pump (61) are electrically connected through the microcontroller.

5. A novel liquid cargo ship for preventing ballast tank sediment deposition according to claim 1, characterized in that: The inert gas generating and injecting device (8) includes an inert gas generator (81), a connecting pipe (82), a control valve (83), a gas storage tank (84), and an injection pipe (85). The inert gas generator (81) is fixed to one side of the top of the ship's engine room (1), and a gas storage tank (84) is provided on one side of the inert gas generator (81).

6. A novel liquid cargo ship for preventing ballast tank sediment deposition according to claim 5, characterized in that: The inert gas generator (81) has a connecting pipe (82) evenly fixed on one side near the gas storage tank (84). The connecting pipe (82) is equipped with a control valve (83) inside. The gas storage tank (84) has an injection pipe (85) fixed at both ends.

7. A novel liquid cargo ship for preventing ballast tank sediment deposition according to claim 5, characterized in that: One end of the injection pipe (85) is fixedly connected to the input end of the cargo hold (7).

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