Ship

Abstract

To provide a ship capable of increasing the space where equipment and so on are arranged in an engine area.SOLUTION: A ship comprises a hull with a pair of broadsides, an engine installed in the hull, a fuel tank installed on the bow side of the engine in the hull and capable of storing an engine fuel, a transverse bulkhead that divides the engine area where the engine is arranged and the fuel tank room where the fuel tank is accommodated, and a fuel adjustment room in which a fuel vaporizer to vaporize the fuel supplied from the fuel tank and to supply it to the engine is accommodated, and which is arranged along the transverse bulkhead in the engine area and arranged inside in the ship width direction away from at least one broadside among the pair of broadsides.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to marine vessels. [Background technology]

[0002] When liquefied gas is used as fuel to drive engines such as the main engine and auxiliary engines of a ship, a liquefied gas fuel tank for storing the liquefied gas may be provided inside the hull. Between the liquefied gas fuel tank and the engine, a fuel supply system is provided that includes a fuel vaporizer that vaporizes the liquefied gas supplied from the liquefied gas fuel tank and supplies it to the engine. It is desirable to efficiently arrange the liquefied gas fuel tank, the fuel supply system, and the engine in the limited space inside the hull.

[0003] Patent Document 1 discloses a ship equipped with a liquefied gas fuel tank and a liquefied gas supply system for supplying fuel in the liquefied gas fuel tank to a fuel consuming unit. In this ship configuration, the liquefied gas supply system is disposed at least one of between the liquefied gas fuel tank and the ship's side and between the liquefied gas fuel tank and the front wall of the engine room. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-69934 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, within the hull, the machinery space in which the engine is installed and the tank space in which the liquefied gas fuel tank is arranged are separated by a watertight bulkhead. In the configuration described in Patent Document 1, the liquefied gas supply system is arranged on the tank space side with respect to the watertight bulkhead. On the other hand, in the machinery space inside the hull where the engine is installed, it is sometimes desired to secure more space for arranging various equipment, etc. However, in the configuration described in Patent Document 1, the liquefied gas supply system is arranged on the tank space side with respect to the watertight bulkhead, making it difficult to expand the machinery space toward the tank space side.

[0006] The present disclosure has been made to solve the above-mentioned problem, and aims to provide a ship that can increase the space for arranging equipment, etc. within the machinery space. [Means for solving the problem]

[0007] In order to solve the above problems, a ship according to the present disclosure includes a hull, an engine, a fuel tank, a transverse bulkhead, and a fuel adjustment room. The hull has a pair of ship sides. The engine is provided within the hull. The fuel tank is provided within the hull on the bow side of the engine and is capable of storing fuel for the engine. The transverse bulkhead separates an engine room in which the engine is disposed from a fuel tank room in which the fuel tank is accommodated. The fuel adjustment room accommodates a fuel vaporization device that vaporizes fuel supplied from the fuel tank and supplies it to the engine. The fuel adjustment room is arranged along the transverse bulkhead within the engine room and away from at least one of the pair of ship sides toward the inside in the ship width direction. Effect of the Invention

[0008] According to the ship of the present disclosure, it is possible to increase the space for arranging equipment, etc. within the machinery space. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a side view of a marine vessel according to a first embodiment of the present disclosure. [Diagram 2] 2 is a cross-sectional plan view showing the arrangement of an engine, a fuel adjustment chamber, a transverse bulkhead, and a fuel tank in a marine vessel according to an embodiment of the present disclosure. FIG. [Diagram 3] FIG. 11 is a side view of a vessel according to a second embodiment of the present disclosure. [Figure 4] FIG. 11 is a side view of a vessel according to a modified example of the second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a vessel according to an embodiment of the present disclosure will be described with reference to FIGS. 1 to 4. FIG. First Embodiment As shown in Fig. 1, a boat 1A of the first embodiment includes at least a hull 2, an engine 30, a fuel tank 50, and a fuel adjustment chamber 25. The type of boat 1A is not limited to a specific one as long as it is capable of carrying vehicles. The type of boat 1A exemplified in this embodiment is a PCTC (Pure Car and Truck Carrier).

[0011] The hull 2 ​​has a pair of side panels 3A, 3B that form its outer hull, and a ship bottom 4. The side panels 3A, 3B each have a pair of side panel plates that form the port and starboard sides, respectively. The ship bottom 4 has a bottom panel plate that connects the side panels 3A, 3B.

[0012] The hull 2 ​​has multiple decks 7 including a boarding deck 5, an inner bottom plate 6, and an upper deck 8. The boarding deck 5 in this embodiment is a so-called freeboard deck, and is the lowest of the full-length decks located above the load waterline. Vehicles board the boarding deck 5 from the outside of the hull 2 ​​to the inside via a shore ramp when docking. In this first embodiment, the boarding deck 5 is a bulkhead deck with a watertight structure. The inner bottom plate 6 forms a double bottom together with the bottom shell plate. The upper deck 8 is the highest of the full-length decks. The ship 1A illustrated in this embodiment has a superstructure 15 that forms a bridge and accommodation area on the side of the upper deck 8 closer to the bow 2a in the bow-stern direction FA.

[0013] FIG. 2 is a cross-sectional plan view showing the arrangement of an engine, a fuel control chamber, a transverse bulkhead, and a fuel tank in a marine vessel according to an embodiment of the present disclosure. As shown in Figs. 1 and 2, a transverse bulkhead 20 is provided in the hull 2. The transverse bulkhead 20 is a watertight bulkhead that closes between one side 3A in the ship's width direction Dw, the other side 3B in the ship's width direction Dw, the boarding deck 5, and the inner bottom plating 6. The transverse bulkhead 20 divides the space between the boarding deck 5 and the inner bottom plating 6 in the hull 2 ​​into an engine room 21 and a fuel tank room 22. The engine room 21 is formed on the stern 2b side in the fore-aft direction FA with respect to the transverse bulkhead 20. The fuel tank room 22 is formed on the bow 2a side in the fore-aft direction FA with respect to the transverse bulkhead 20. In this embodiment, the engine room 21 includes an engine room 23 and a fuel adjustment room 25. The engine room 23 may be divided into a plurality of rooms, such as a main engine room and an auxiliary engine room.

[0014] The engine 30 is provided within the hull 2. The engine 30 may be a main engine, an auxiliary engine, a generator engine, or the like. The engine 30 of this embodiment is driven by liquefied gas as fuel. Examples of liquefied gas that can be used as fuel for the engine 30 include LNG (Liquefied Natural Gas), LPG (Liquefied Petroleum Gas), methanol, ammonia, and the like. The engine 30 is accommodated within the engine room 23 of the machinery space 21. There is no limitation on the number and arrangement of the engines 30 arranged in the engine room 23.

[0015] 2, the fuel adjustment chamber 25 accommodates at least a fuel vaporizer 27 that vaporizes fuel supplied from a fuel tank 50 and supplies the fuel to the engine 30. The fuel adjustment chamber 25 is disposed on the stern 2b side in the fore-aft direction FA with respect to the transverse bulkhead 20. In this embodiment, the dimension of the fuel adjustment chamber 25 in the ship width direction Dw is longer than the dimension in the fore-aft direction FA, and the fuel adjustment chamber 25 is provided along the transverse bulkhead 20 in the machinery space 21.

[0016] The fuel adjustment chamber 25 has a front wall 25a, a rear wall 25b, and a pair of side walls 25c, 25d. The front wall 25a, the rear wall 25b, and the pair of side walls 25c, 25d rise upward from the inner bottom plate 6. In this embodiment, the upper ends of the front wall 25a, the rear wall 25b, and the pair of side walls 25c, 25d are connected to the lower surface of the boarding deck 5, and the boarding deck 5 also serves as the ceiling wall of the fuel adjustment chamber 25. All of the walls that partition the fuel adjustment chamber 25 are fire walls.

[0017] The front wall 25a extends in the ship width direction Dw. The front wall 25a is provided on a side closer to the bow 2a in the fore-aft direction FA. In this embodiment, the front wall 25a forms a part of the transverse bulkhead 20. In other words, a part of the transverse bulkhead 20 also serves as the front wall 25a of the fuel adjustment chamber 25.

[0018] The rear wall 25b is disposed closer to the stern 2b than the front wall 25a and extends in the ship width direction Dw. The rear wall 25b illustrated in this embodiment is spaced apart from the front wall 25a toward the stern 2b and extends in parallel with the front wall 25a in the ship width direction Dw.

[0019] The side walls 25c and 25d each extend from the transverse bulkhead 20 toward the stern 2b in the bow-stern direction FA. Specifically, one side wall 25c connects an edge of the front wall 25a close to one side 3A and an edge of the rear wall 25b close to one side 3A. Similarly, the other side wall 25d connects an edge of the front wall 25a close to the other side 3B and an edge of the rear wall 25b close to the other side 3B. One side wall 25c is disposed away from one side 3A on the inside in the ship width direction Dw, and the other side wall 25d is disposed away from the other side 3B on the inside in the ship width direction Dw.

[0020] As described above, the fuel adjustment room 25 is disposed away from each of the pair of ship's sides 3A, 3B on the inside in the ship's width direction Dw. That is, in the machinery space 21, on both sides of the fuel adjustment room 25 in the ship's width direction Dw, side spaces 23s, 23t forming part of the engine room 23 are formed. The side space 23s on one side in the ship's width direction Dw is formed between one ship's side 3A and the side wall 25c. The side space 23t on the other side in the ship's width direction Dw is formed between the other ship's side 3B and the side wall 25d. In the side spaces 23s, 23t, equipment such as auxiliary machinery and piping disposed in the engine room 23 can be disposed.

[0021] The fuel tank 50 is capable of storing liquefied gas that serves as fuel for the engine 30. The fuel tank 50 is accommodated in the fuel tank chamber 22. In the embodiment of the present disclosure, two fuel tanks 50 are accommodated in the fuel tank chamber 22, and these two fuel tanks 50 are lined up in the ship's width direction Dw. In the present embodiment, each fuel tank 50 is provided so as to extend in the bow-stern direction FA.

[0022] The fuel tank 50 in this embodiment is a so-called type-C tank defined by the International Maritime Organization (IMO), and is, for example, a cylindrical pressure vessel extending in the horizontal direction. By making each fuel tank 50 a type-C tank, it becomes unnecessary to provide a space such as a void space between the engine room 23 and the fuel tank 50. The fuel tank 50 is not limited to being cylindrical, but may be spherical, rectangular, or the like.

[0023] The fuel tank 50A on one side in the ship's width direction Dw is preferably provided with a gap S1 of 1 / 5B or more of the ship's width B of the hull 2 ​​from the ship's side 3A on one side in the ship's width direction Dw. The fuel tank 50B on the other side in the ship's width direction Dw is preferably provided with a gap S2 of 1 / 5B or more of the ship's width B from the ship's side 3B on the other side in the ship's width direction Dw.

[0024] The ship 1A further includes a first pipe 71 and a second pipe 72. The first piping 71 connects each fuel tank 50 and the fuel vaporizer 27. The first piping 71 supplies the fuel (liquefied gas) stored in the fuel tank 50 to the fuel vaporizer 27. The second piping 72 connects the fuel vaporizer 27 and the engine 30. The second piping 72 supplies the fuel gas vaporized in the fuel vaporizer 27 to the engine 30.

[0025] The first pipe 71 is a single pipe that does not have a protective pipe (in other words, an outer pipe) that covers the outside. The first pipe 71 passes through the horizontal bulkhead 20 (front wall 25a) from inside the fuel tank chamber 22, extends into the fuel adjustment chamber 25, and is connected to the fuel vaporization device 27.

[0026] The second piping 72 is a double pipe having an inner pipe 72a and an outer pipe 72b provided radially outwardly of the inner pipe 72a at a distance. A gas such as an inert gas flows between the inner pipe 72a and the outer pipe 72b. The second piping 72 extends from inside the fuel adjustment chamber 25 through the rear wall 25b into the engine room 23 and is connected to the engine 30.

[0027] (Action and effect) In the ship 1A of the first embodiment, the fuel adjustment room 25 is provided along the transverse bulkhead 20 in the machinery space 21, and is disposed away from the pair of ship sides 3A, 3B on the inside in the ship width direction Dw. This allows the transverse bulkhead 20 to be provided closer to the bow 2a than when the fuel adjustment room 25 is provided in the fuel tank room 22. In addition, in the machinery space 21, side spaces 23s, 23t can be provided between the pair of ship sides 3A, 3B and the fuel adjustment room 25 at positions along the transverse bulkhead 20. Therefore, equipment, piping, etc. can be arranged in the side spaces 23s, 23t, and as a result, the space for arranging equipment, etc. in the machinery space 21 can be increased.

[0028] In addition, in the first embodiment, the front wall 25a of the fuel adjustment chamber 25 forms a part of the transverse bulkhead 20, so that the fuel adjustment chamber 25 can be efficiently provided along the transverse bulkhead 20. Then, the side spaces 23s, 23t can be formed in the machinery space 21 at a position along the transverse bulkhead 20 and between the pair of ship sides 3A, 3B and the side walls 25c, 25d.

[0029] Furthermore, in the above first embodiment, the first piping 71 which is a single pipe penetrates the horizontal bulkhead 20, and the second piping 72 which is a double pipe does not penetrate the horizontal bulkhead 20. For this reason, when performing maintenance or the like on the second piping 72 which is a double pipe, the work can be easily performed.

[0030] (Modification of the first embodiment) In the first embodiment, the fuel adjustment chamber 25 is arranged to be spaced inward in the ship width direction Dw from both of the pair of ship sides 3A, 3B, but is not limited to this. The fuel adjustment chamber 25 may be arranged to be spaced inward in the ship width direction Dw from only one of the pair of ship sides 3A, 3B and to be in contact with the other of the pair of ship sides 3A, 3B.

[0031] In the first embodiment, the fuel tanks 50A, 50B are provided from the ship sides 3A, 3B with gaps S1, S2 of 1 / 5B or more of the ship width B of the hull 2, but this is not limited to the above. The fuel tanks 50A, 50B may be provided from the ship sides 3A, 3B with gaps S1, S2 of less than 1 / 5B of the ship width B of the hull 2. Furthermore, the fuel tanks 50A, 50B may be provided in a range of less than 1 / 5B of the ship width B of the hull 2 ​​from the ship sides 3A, 3B.

[0032] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to the drawings. The ship of the second embodiment is different from the ship 1A of the first embodiment in that it includes a vehicle deck above the machinery space. Therefore, the same parts as those of the first embodiment will be described with the same reference numerals, and duplicated descriptions will be omitted.

[0033] FIG. 3 is a side view of a marine vessel according to a second embodiment of the present disclosure. As shown in Fig. 3, the ship 1B in the second embodiment is provided with a machinery space upper vehicle deck 9 inside the hull 2. The machinery space upper vehicle deck 9 is located below the boarding deck 5. Vehicles can get on and off the boarding deck 5 via a stern ramp 12A provided on the hull 2. The stern ramp 12A is a shore ramp for loading and unloading cargo such as vehicles. The hull 2 ​​of this embodiment is illustrated as having only the stern ramp 12A, but may have a center ramp in addition to the stern ramp 12A. The stern ramp 12A is provided at the stern 2b and connected to the boarding deck 5. When the stern ramp 12A is folded down and deployed, vehicles such as passenger cars and trucks can drive themselves from the quay through the stern ramp 12A and board the boarding deck 5. Note that the present invention is not limited to the case where the stern ramp 12A is provided, and for example, a bow ramp connected to the boarding deck 5 may be provided instead of the stern ramp 12A.

[0034] The machinery space upper car deck 9 forms the ceiling of the machinery space 21. The leading edge of the machinery space upper car deck 9 on the bow 2a side is connected to the transverse bulkhead 20. In this second embodiment, the boarding deck 5 or the machinery space upper car deck 9 is a bulkhead deck having a watertight structure. Vehicles can be loaded onto the machinery space upper vehicle deck 9. A vehicle (not shown) boarded via the stern ramp 12A can move by itself from the boarding deck 5 to a predetermined loading position on the machinery space upper vehicle deck 9 via, for example, a rampway (not shown).

[0035] (Action and effect) In the second embodiment, a vehicle deck 9 above the machinery space is provided between the boarding deck 5 and the machinery space 21. This makes it possible to effectively utilize the space above the machinery space 21 and increase the number of vehicles that can be loaded. As a result, the number of vehicles that can be loaded can be increased without increasing the size of the ship 1A.

[0036] In the second embodiment, similarly to the first embodiment, as shown in Fig. 2, in the machinery space 21, side spaces 23s, 23t are provided between at least one of the pair of shipboard sides 3A, 3B and the fuel adjustment room 25 at a position along the transverse bulkhead 20. Therefore, equipment and the like can be arranged in these side spaces 23s, 23t. As a result, the space for arranging equipment and the like can be increased in the machinery space 21.

[0037] <Modification of the second embodiment> In the above-described second embodiment, the boarding deck 5 or the vehicle deck 9 above the machinery space is a bulkhead deck having a watertight structure, but this is not limited thereto. FIG. 4 is a side view of a vessel according to a modified example of the second embodiment of the present disclosure. As shown in Fig. 4, in the ship 1C according to the modified example of the second embodiment, the machinery space upper car deck 9 and the boarding deck 5 on the bow 2a side and the stern 2b side of the machinery space upper car deck 9 are bulkhead decks. In Fig. 4, the bulkhead deck is indicated by a thick dashed line. That is, the bulkhead deck is recessed downward at the position of the machinery space upper car deck 9 in the bow-stern direction FA. This makes it possible to make the compartment between the machinery space upper car deck 9 and the boarding deck 5 non-watertight.

[0038] (Action and effect) According to the modification of the second embodiment described above, since the machinery space upper vehicle deck 9 is a bulkhead deck, the interior ramp for vehicles to move between the boarding deck 5 and the machinery space upper vehicle deck 9 can be made non-watertight. Furthermore, since there is no need to provide an interior ramp between the boarding deck 5 and the machinery space upper vehicle deck 9, and a watertight rampway of the lift-up type or watertight door (including cover) type, it is possible to reduce costs and improve loading and unloading efficiency.

[0039] (Other embodiments) Although the embodiments of the present disclosure have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes and the like that do not depart from the gist of the present disclosure are also included. In the above embodiments, a PCTC (Pure Car and Truck Carrier) has been described as an example, but the present invention can also be applied to ships such as a RO-RO (roll-on / roll-off ship) and a PCC (Pure Carrier).

[0040] <Additional Notes> The ship 1A described in each embodiment can be understood, for example, as follows.

[0041] (1) A ship 1A to 1C in a first embodiment comprises a hull 2 ​​having a pair of ship sides 3A, 3B, an engine 30 provided within the hull 2, a fuel tank 50 provided within the hull 2 ​​on the bow 2a side of the engine 30 and capable of storing fuel for the engine 30, a transverse bulkhead 20 separating an engine room 21 in which the engine 30 is arranged and a fuel tank room 22 in which the fuel tank 50 is accommodated, and a fuel adjustment room 25 which accommodates a fuel vaporization device 27 that vaporizes fuel supplied from the fuel tank 50 and supplies it to the engine 30, and which is arranged along the transverse bulkhead 20 within the engine room 21 and away from at least one of the pair of ship sides 3A, 3B on the inside of the ship's width direction Dw.

[0042] This allows side spaces 23s, 23t to be provided in the machinery space 21 at a position along the transverse bulkhead 20 between at least one of the pair of shipboard sides 3A, 3B and the fuel adjustment room 25. Therefore, equipment and the like can be arranged in these side spaces 23s, 23t. As a result, the space for arranging equipment and the like in the machinery space 21 can be increased.

[0043] (2) The ships 1A to 1C according to the second aspect are the ships 1A to 1C of (1), wherein the fuel adjustment chamber 25 has a front wall 25a provided on the bow 2a side in the fore-aft direction FA of the hull 2, a rear wall 25b provided on the stern 2b side in the fore-aft direction FA, and a pair of side walls 25c, 25d provided on both sides in the ship's width direction Dw, and the front wall 25a forms part of the transverse bulkhead 20.

[0044] As a result, the front wall 25a of the fuel adjustment chamber 25 forms a part of the transverse bulkhead 20, so that the fuel adjustment chamber 25 can be efficiently provided along the transverse bulkhead 20. In addition, in the machinery space 21, side spaces 23s, 23t can be formed at a position along the transverse bulkhead 20 between at least one of the pair of shipboard sides 3A, 3B and the side walls 25c, 25d.

[0045] (3) The ships 1A to 1C according to a third aspect are the ships 1A to 1C of (1) or (2), and are provided with a first piping 71 that penetrates the transverse bulkhead 20 and supplies the fuel from the fuel tank 50 to the fuel vaporization device 27, and a second piping 72 that supplies the fuel gas generated in the fuel vaporization device 27 to the engine 30, wherein the first piping 71 is a single pipe and the second piping 72 is a double pipe having an inner pipe 72a and an outer pipe 72b.

[0046] As a result, the first piping 71, which is a single pipe, penetrates the horizontal bulkhead 20, and the second piping 72, which is a double pipe, does not penetrate the horizontal bulkhead 20. Therefore, when performing maintenance on the second piping 72, which is a double pipe, the work can be easily performed.

[0047] (4) The ship 1A in the fourth aspect is any one of the ships 1B, 1C of (1) to (3), and further comprises a boarding deck 5 provided on the hull 2 ​​and enabling vehicles to board and disembark via the stern ramp 12A or the bow ramp, and a vehicle deck 9 above the machinery space, located below the boarding deck 5, forming the ceiling of the machinery space 21, and enabling the vehicles to be loaded.

[0048] As a result, since a vehicle deck 9 above the machinery space is provided between the boarding deck 5 and the machinery space 21, the space above the machinery space 21 can be effectively utilized to increase the number of vehicles that can be carried. [Explanation of symbols]

[0049] 1A~1C...Vessel 2...Hull 2a...Bow 2b...Stern 3A, 3B...Side 4...Bottom 5...Boarding deck 6...Inner bottom plating 7...Deck 8...Upper deck 9...Machinery space upper vehicle deck 12A...Stern ramp 15...Superstructure 20...Transverse bulkhead 21...Machinery space 22...Fuel tank room 23...Engine room 23s...Side space 23t...Side space 25...Fuel adjustment room 25a...Fore wall 25b...Aft wall 25c...Side wall 25d...Side wall 27...Fuel vaporizer 30...Engine 50, 50A, 50B...Fuel tank 71...First piping 72...Second piping 72a...Inner pipe 72b...Outer pipe B...Ship width S1, S2...Gap

Claims

1. A hull having a pair of sides; An engine provided within the hull; a fuel tank provided inside the hull closer to the bow than the engine and capable of storing fuel for the engine; a transverse bulkhead separating an engine room in which the engine is disposed and a fuel tank room in which the fuel tank is housed; a fuel adjustment room that accommodates a fuel vaporization device that vaporizes the fuel supplied from the fuel tank and supplies the fuel to the engine, the fuel adjustment room being disposed along the transverse bulkhead in the machinery space and away from at least one of the pair of ship sides toward the inside in the ship width direction; A vessel equipped with:

2. The fuel adjustment chamber has a front wall provided on a bow side in a bow-stern direction of the hull, a rear wall provided on a stern side in the bow-stern direction, and a pair of side walls provided on both sides in a ship width direction, The front wall forms part of the transverse bulkhead.

2. The watercraft of claim 1.

3. a first pipe provided through the horizontal bulkhead and configured to supply the fuel from the fuel tank to the fuel vaporization device; a second pipe that supplies the fuel gas generated by the fuel vaporizer to the engine, The first pipe is a single pipe, and the second pipe is a double pipe having an inner pipe and an outer pipe.

3. A vessel as claimed in claim 1 or 2.

4. A boarding deck provided on the hull and capable of boarding and disembarking vehicles via a stern ramp or a bow ramp; and a vehicle deck above the machinery space, the vehicle deck being located below the boarding deck, forming a ceiling of the machinery space, and on which the vehicle can be mounted.

3. A vessel as claimed in claim 1 or 2.

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