Ships

Abstract

To provide a vessel capable of practically arranging a fuel storage unit.SOLUTION: A fuel storage unit 60 is provided above an upper deck 19. Therefore, the fuel storage unit 60 is capable of storing fuel in a position above the upper deck 19 of a hull 11. In addition, the fuel storage unit 60 and a living quarter 33 are arranged to be superposed at least partially in a plan view. Here, the hull 11 is provided with an existent reinforcement structure for supporting the living quarter 33 on the upper deck 19. The fuel storage unit 60 can be supported by using the existent reinforcement structure when the fuel storage unit 60 is arranged to be superposed with the living quarter in a plan view. In addition, having the fuel storage unit 60 blocking view of the living quarter 33 can be evaded when the fuel storage unit 60 is arranged to be superposed with the living quarter 33 in a plan view. Thus, the fuel storage unit 60 can be arranged practically.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a ship. [Background technology]

[0002] In recent years, due to environmental regulations imposed on ships, tanks for storing fuels such as ammonia, hydrogen, liquefied natural gas, etc. are sometimes provided on the hull of a ship. For example, the ship shown in Patent Document 1 is provided with a tank for storing ammonia. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-167054 Summary of the Invention [Problem to be solved by the invention]

[0004] The fuel storage unit described above is installed on the upper deck of the ship. However, a fuel storage unit that stores the above-mentioned fuel is not only heavy in weight but also requires a large storage capacity. Therefore, a reinforcing structure is required to place the fuel storage unit on the upper deck, and depending on the location, problems such as obstructing visibility from the accommodation area or the wheelhouse arise. Therefore, a rational location for the fuel storage unit has been desired.

[0005] The present invention has been made to solve such problems, and has an object to provide a ship in which fuel storage sections for ammonia, liquefied natural gas, hydrogen, etc. can be rationally arranged. [Means for solving the problem]

[0006] The ship of the present invention comprises a hull having an upper deck, an accommodation area provided in the hull, and a fuel storage section for storing fuel, the fuel storage section being provided at least above the upper deck, and the fuel storage section and the accommodation area being arranged so as to overlap at least partially in a plan view.

[0007] In the ship according to the present invention, the fuel storage unit is provided at least above the upper deck. Therefore, the fuel storage unit can store fuel at a position above the upper deck of the hull. Furthermore, in a plan view, the fuel storage unit and the accommodation area are arranged so as to overlap at least partially. Here, the hull is provided with an existing reinforcing structure for supporting the accommodation area on the upper deck. If the fuel storage unit is arranged so as to overlap the accommodation area in a plan view, the existing reinforcing structure can be used to support the fuel storage unit. Furthermore, if the fuel storage unit is arranged so as to overlap the accommodation area in a plan view, it is possible to prevent the fuel storage unit from obstructing the view of the accommodation area or the wheelhouse. In this way, the fuel storage unit can be arranged rationally.

[0008] The fuel storage unit may store at least one of hydrogen, ammonia, and liquefied natural gas as fuel. Fuel storage units for these fuels tend to be larger in volume than those for fossil fuels, but by arranging them so that they overlap with the living area in a plan view, sufficient space can be secured.

[0009] The fuel storage section may be provided on the first level of the superstructure, including the accommodation area. In this case, the height of the center of gravity of the fuel storage section can be lowered. Also, the fuel storage section can be easily supported by the existing reinforcement structure of the accommodation area. Furthermore, since the fuel storage section can be located between the engine room and the accommodation area, the fuel storage section can function as a noise buffer for the accommodation area from the engine room.

[0010] The fuel storage unit and the engine arranged in the engine room are connected by a lead-out pipe, and the lead-out pipe drawn out from the fuel storage unit may be connected to the engine without passing through a bulkhead extending in the vertical direction of the hull, in which case the lead-out pipe can be shortened. [Effects of the Invention]

[0011] According to the present invention, a ship can be provided in which a fuel storage section can be rationally arranged. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic cross-sectional view showing an example of a ship according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic side view of the aft structure of the vessel. [Figure 3] FIG. 2 is a schematic plan view of the stern side structure of the vessel 1. [Figure 4] FIG. 10 is a schematic plan view of a stern side structure of a vessel according to a modified example. [Figure 5] FIG. 10 is a schematic plan view of a stern side structure of a vessel according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] A preferred embodiment of the present invention will be described below with reference to the drawings. In the following description, the terms "forward" and "aft" refer to the direction of travel of the hull, the term "lateral" refers to the left-right (width) direction of the hull, and the terms "upper" and "lower" refer to the up-down direction of the hull.

[0014] 1 is a schematic cross-sectional view showing an example of a ship according to an embodiment of the present invention. The ship 1 is a ship that transports petroleum-based liquid cargo such as crude oil or liquid gas, and is, for example, an oil tanker. Note that the ship is not limited to an oil tanker, and may be, for example, a bulk carrier or various other types of ships.

[0015] As shown in FIG. 1, the ship 1 has a hull 11 and a propeller 12. The hull 11 has a bow section 2, a stern section 3, an engine room 4, a pump room 5, and a cargo room 6. An upper deck 19 is provided at the top of the hull 11 (or inside the ship). The bow section 2 is located on the front side of the hull 11. The stern section 3 is located on the rear side of the hull 11. The stern section 3 has, from top to bottom, a steering room 36, a space below the steering room 37, and a stern structure 38. The steering room 36 is a space for arranging a steering gear for steering the rudder 15, etc. The space below the steering room 37 is a space provided below the steering room 7. The stern structure 38 is provided below the space below the steering room 37, and is a part that forms part of the propulsion shafting system.

[0016] The bow 2 has a shape designed to reduce wave-making resistance, for example, when the ship is at full load. The propeller 12 propels the hull 11, and is implemented by, for example, a screw shaft. The propeller 12 is installed below the waterline (the surface of the sea W) at the stern 3 during propulsion. A rudder 15 is also installed below the waterline at the stern 3 to adjust the direction of propulsion.

[0017] The engine room 4 is located adjacent to the bow side of the stern section 3. The engine room 4 is a compartment for accommodating the engine 16 that provides driving force to the propeller 12. An accommodation area 33 and an exhaust chimney 34 are located above the engine room 4 on the upper deck 19. Note that the structure on the upper deck 19, including the accommodation area 33, may be referred to as the superstructure 100. The pump room 5 is located adjacent to the bow side of the engine room 4. The pump room 5 is a compartment in which pumps 17 and the like are located. The cargo hold 6 is located between the bow section 2 and the pump room 5. The cargo hold 6 is a compartment for accommodating, for example, petroleum-based cargo. The cargo hold 6 is partitioned into multiple cargo oil tanks 26 and multiple ballast tanks 27 by adopting a double-hull structure consisting of an outer plating 20 and an inner bottom plating 21. The cargo oil tank 26 stores petroleum-based cargo to be transported by the ship 1. The ballast tank 27 stores ballast water in an amount according to the size of the ship.

[0018] The structure of the stern side of the vessel 1 will be described in detail with reference to Figures 2 and 3. Figure 2 is a schematic side view of the structure of the stern side of the vessel 1. Figure 3 is a schematic plan view of the structure of the stern side of the vessel 1.

[0019] As shown in FIG. 3 , a pump room 5 is provided adjacent to the front side of the engine room 4. The stern section 3 is provided adjacent to the rear side of the engine room 4. A void 41 and a fuel storage section 42 for heavy oil or the like are provided adjacent to the left and right sides of the engine room 4. The engine room 4 is separated from the pump room 5 by a bulkhead 51 at the front. The engine room 4 is separated from the stern section 3 by a bulkhead 52 at the rear. The engine room 4 is separated from the void 41 and the fuel storage section 42 by bulkheads 53 and 54 at the left and right sides. Note that a structure in which the void 41 and the fuel storage section 42 are not provided and the engine room 4 extends to the outer plating may also be adopted. The bulkheads 51 and 52 are arranged at a distance from each other in the fore-and-aft direction and are wall sections extending in the up-and-down and lateral directions. The bulkheads 53 and 54 are arranged at a distance from each other in the left-and-right direction and are wall sections extending in the up-and-down and fore-and-aft direction.

[0020] As shown in FIG. 2, the superstructure 100 is provided above the engine room 4 on the upper deck 19. The superstructure 100 has stories F1 to F5. A fuel storage section 60 is provided on the first story F1 of the superstructure 100. Accommodation areas are provided on stories F2, F3, and F4 of the superstructure 100. A wheelhouse 71 is provided on the top story F5 of the superstructure 100. In this way, the accommodation area 33 is provided above the fuel storage section 60. Furthermore, the fuel storage sections 60 are provided so as to be interposed between all the spaces between the engine room 4 and the accommodation area 33. The superstructure 100 is not limited to five stories, and may have any number of stories, such as three or four stories. Furthermore, in the case of large ships, it may have six stories.

[0021] The fuel storage unit 60 stores at least one of hydrogen, ammonia, and liquefied natural gas as fuel. The fuel storage unit 60 is connected to the engine 16 arranged in the engine room 4 by a draw-out pipe L1. The engine 16 is arranged at a position shifted rearward from the superstructure 100. Therefore, the draw-out pipe L1 has a pipe section L1a that is drawn out from the underside of the fuel storage unit 60 and extends downward, and a pipe section L1b that extends rearward from the lower end of the pipe section L1a. The upper end of the pipe section L1a of this draw-out pipe L1 penetrates the upper deck 19, but does not penetrate other wall sections, extends through the space of the engine room 4, and is connected to the engine 16. The position of the engine 16 in the engine room 4 is not particularly limited, and the routing structure of the draw-out pipe L1 is also not particularly limited.

[0022] In this way, the draw-out pipe L1 drawn out from the fuel storage section 60 is connected to the engine 16 without passing through any bulkheads (bulkheads 51, 52, 53, 54, etc., described below) extending in the vertical direction of the hull 11. Note that the bulkheads of the hull 11 do not include interior partition plates and the like provided within the space of the engine room 4, but refer to wall sections that separate the interior space of the hull 11 to form rooms. Note that the draw-out path of the draw-out pipe L1 is not limited to that shown in FIG. 2.

[0023] In Figure 3, the walls of the superstructure 100 are shown with imaginary lines. As shown in Figure 3, the front wall 101 of the superstructure 100 is provided on the bulkhead 51 forward of the engine room 4 (see also Figure 2). The aft wall 102 of the superstructure 100 is provided on a web frame 56 (see Figure 2) at a position spaced forward from the bulkhead 52. The side walls 103, 104 of the superstructure 100 are provided on the bulkheads 53, 54 on the sides of the engine room 4. In this way, the bulkheads 51, 53, 54 and the web frame 56 function as a reinforcing structure that supports the accommodation space 33 from the underside of the upper deck 19.

[0024] In a plan view, the fuel storage section 60 and the accommodation section 33 are arranged so as to overlap at least partially. In this embodiment, the entire first floor F1 of the superstructure 100 is configured as the fuel storage section 60. Therefore, the fuel storage section 60 overlaps the accommodation section 33 over its entire area without protruding from it. Furthermore, the outer shape of the fuel storage section 60 overlaps with the outer shape of the accommodation section 33 so as to match. The portion of floor F1 on the front wall 101 of the superstructure 100 corresponds to the front wall 61 of the fuel storage section 60. The portion of floor F1 on the rear wall 102 of the superstructure 100 corresponds to the rear wall 62 of the fuel storage section 60. The portions of floor F1 on the side walls 103, 104 of the superstructure 100 correspond to the side walls 63, 64 of the fuel storage section 60. Moreover, the upper deck 19 corresponds to the bottom wall 66 of the fuel storage section 60, and the bulkhead separating the levels F1 and F2 corresponds to the top wall 67 of the fuel storage section 60 (see FIG. 2).

[0025] Therefore, a front wall 61 of the fuel storage section 60 is provided on the bulkhead 51 on the front side of the engine room 4 (see also Figure 2). A rear wall 62 of the fuel storage section 60 is provided on a web frame 56 (see Figure 2) at a position spaced forward from the bulkhead 52. Side wall sections 63, 64 of the fuel storage section 60 are provided on the bulkheads 53, 54 on the sides of the engine room 4. In this way, the bulkheads 51, 53, 54 and the web frame 56 function as a reinforcing structure that supports the fuel storage section 60 from the underside of the upper deck 19.

[0026] Each of the walls 61, 62, 63, 64, 66, and 67 of the fuel storage unit 60 may itself be used as a wall that forms a space for storing fuel. Also, a tank or the like that stores fuel may be disposed inside the space formed by each of the walls 61, 62, 63, 64, 66, and 67. Also, a partition or the like may be provided inside the fuel storage unit 60.

[0027] Next, the functions and effects of the boat 1 according to this embodiment will be described.

[0028] First, as a comparative example, a structure in which an ammonia tank 200 is provided on the upper deck 19, forward of the accommodation area 33, as shown by the imaginary line in Fig. 1 will be described. The ammonia tank 200 requires a larger volume (approximately three times) and is heavier (approximately twice) than a fossil fuel tank, making it difficult to place it on the upper deck 19. For example, in order to support the weight of the ammonia tank 200, a reinforcing structure needs to be provided in addition to the existing ship 1.

[0029] Furthermore, placing the ammonia tank 200 on the upper deck 19 via the saddle 201 causes a problem of reduced stability of the ship 1. Also, the ammonia tank 200 obstructs visibility of the accommodation space 33. Furthermore, providing the ammonia tank 200 requires that measures to suppress N2O emissions (a by-product of combustion) be carried out on the upper deck 19. Furthermore, measures to prevent the toxicity of ammonia when leaking or being discharged, treatment of BOG generated by heat penetration, careful selection of materials due to their corrosiveness, optimization of combinations with NOx countermeasures, and measures to prevent the emission of unburned ammonia must be carried out on the upper deck 19.

[0030] In contrast, in the marine vessel 1 according to this embodiment, the fuel storage unit 60 is provided at least above the upper deck 19. Therefore, the fuel storage unit 60 can store fuel at a position above the upper deck 19 of the hull 11. Furthermore, in a plan view, the fuel storage unit 60 and the accommodation space 33 are arranged to overlap at least partially. Here, the hull 11 is provided with an existing reinforcement structure for supporting the accommodation space 33 on the upper deck 19. If the fuel storage unit 60 is arranged to overlap the accommodation space 33 in a plan view, the existing reinforcement structure can be used to support the fuel storage unit 60. Furthermore, if the fuel storage unit 60 is arranged to overlap the accommodation space 33 in a plan view, it is possible to avoid the fuel storage unit 60 obstructing the view of the accommodation space 33. In this way, the fuel storage unit 60 can be arranged rationally.

[0031] The fuel storage unit 60 may store at least one of hydrogen, ammonia, and liquefied natural gas as fuel. Fuel storage units 60 for these fuels tend to be larger in volume than those for fossil fuels, but by arranging the fuel storage unit 60 so that it overlaps with the living area 33 in a plan view, sufficient space can be secured.

[0032] The fuel storage unit 60 may be provided on the first level of the superstructure 100, including the accommodation space 33. In this case, the height of the center of gravity of the fuel storage unit 60 can be lowered compared to when it is disposed on a normal upper deck. Also, the fuel storage unit 60 can be more easily supported by the existing reinforcement structure of the accommodation space 33. Furthermore, since the fuel storage unit 60 can be disposed between the engine room 4 and the accommodation space 33, the fuel storage unit 60 can function as a noise buffer for the accommodation space 33.

[0033] The fuel storage unit 60 and the engine 16 arranged in the engine room 4 are connected by an outlet pipe L1, and the outlet pipe L1 drawn out from the fuel storage unit 60 may be connected to the engine 16 without passing through a bulkhead extending in the vertical direction of the hull 11. In this case, the outlet pipe L1 can be shortened.

[0034] The present invention is not limited to the above-described embodiments.

[0035] For example, the structure shown in FIG. 4 may be adopted. In the ship 1 shown in FIG. 4, a fuel storage section 60 is provided in a portion of the first story F1 of the superstructure 100. In this case, the fuel storage section 60 and the accommodation section 33 are arranged so as to overlap a portion of the accommodation section 33 in a plan view. Specifically, the fuel storage section 60 is provided in the right region of the story F1, and a buffer chamber 80 is provided in the left region. The buffer chamber 80 is not particularly limited in its use, and may be used as a machinery room or the like, or may be secured as a void space between the fuel storage section 60 and the buffer chamber 80. A side wall 63 on the left side of the fuel storage section 60 functions as a partition wall separating it from the buffer chamber 80 on the story F1. The walls of the buffer chamber 80, except for the side wall 63, are flush with the walls of the superstructure 100.

[0036] The right-hand portion of the story F1 of the front wall 101 of the upper structure 100 corresponds to the front wall 61 of the fuel storage section 60. The right-hand portion of the story F1 of the rear wall 102 of the upper structure 100 corresponds to the rear wall 62 of the fuel storage section 60. The story F1 portion of the side wall 104 of the upper structure 100 corresponds to the side wall 64 of the fuel storage section 60.

[0037] Also, for example, the structure shown in Fig. 5 may be adopted. In the vessel 1 shown in Fig. 5, a fuel storage section 60 is provided so as to protrude from the first story F1 of the superstructure 100. In this case, in a plan view, the fuel storage section 60 and the accommodation section 33 are arranged so that a portion of the fuel storage section 60 overlaps a portion of the accommodation section 33. Specifically, the fuel storage section 60 is provided in the right region of the story F1, and a buffer chamber 80 is provided in the left region.

[0038] The right-hand portion of story F1 of the front wall 101 of the superstructure 100 corresponds to the front wall 61 of the fuel storage section 60. The right-hand portion of story F1 of the rear wall 102 of the superstructure 100 corresponds to the rear wall 62 of the fuel storage section 60. The right-hand side wall 64 of the fuel storage section 60 is positioned further to the right than the story F1 portion of the side wall 104 of the superstructure 100. Therefore, a portion of the right side of the fuel storage section 60 is positioned so as to extend beyond the accommodation area 33 in a plan view.

[0039] Furthermore, in the above-described embodiment, the fuel storage section 60 is provided on the first floor F1 of the superstructure 100, but this is not limited to floor F1. The use of the first floor F1 is not particularly limited, and it may be used for purposes other than the accommodation area 33, or it may be used as an extension of the engine room 4. Furthermore, the superstructure 100 is not limited to having the fuel storage section 60 provided on only one floor, and the fuel storage section 60 may be provided on the second floor or higher. [Explanation of symbols]

[0040] 1...ship, 11...hull, 16...engine, 33...accommodation space, 60...fuel storage section, 100...superstructure, L1...drawing piping.

Claims

1. a hull having an upper deck; a living area provided in the hull; a fuel storage section that stores fuel, the fuel storage section is provided at least above the upper deck and supports the accommodation section; A ship in which, in a plan view, the wall of the fuel storage area, the wall of the accommodation area, and the bulkhead of an engine room located below the upper deck are arranged so that at least a portion of the portions extending in the same direction overlap.

2. The ship according to claim 1 , wherein the fuel storage unit stores at least one of hydrogen, ammonia, and liquefied natural gas as the fuel.

3. The ship according to claim 1 or 2, wherein the fuel storage section is provided in a first layer of a superstructure including the accommodation area.

4. The fuel storage unit and the engine arranged in the engine room are connected by a lead-out pipe, 4. The ship according to claim 1, wherein the outlet pipe drawn out from the fuel storage section is connected to the engine without passing through a bulkhead extending in the vertical direction of the hull.

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