vessel

Abstract

A ship includes a ship body, a gas tank, and a water spraying device. The ship body has a passage. The gas tank is provided to the ship body and is capable of storing ammonia. The water spraying device is capable of spraying water to the passage.

Description

TECHNICAL FIELD

[0001] The present application relates to a ship.

[0002] This application claims priority from Japanese Patent Application No. 2020-141417 filed on August 25, 2020, and the content thereof is incorporated herein by reference. BACKGROUND

[0003] In a ship, when a flammable gas is carried as a fuel for ship propulsion or a cargo, measures are being taken to cope with the case where a gas leak occurs from a gas storage tank that stores the flammable gas or a piping system connected to the gas storage tank. For example, a ship is provided with an escape route to evacuate to a living area, a helicopter landing pad, a lifeboat, or the like in the event of a fire or the like.

[0004] For example, Patent Literature 1 discloses a structure provided with a plurality of escape routes. In such a structure, an escape route disposed on the mechanical equipment side is disposed below the upper deck. Thereby, a flame caused by a fire of the mechanical equipment is shielded by the upper deck, and it is possible to more reliably avoid the flame.

[0005] PRIOR ART DOCUMENTS

[0006] PATENT LITERATURE

[0007] Patent Literature 1: Japanese Patent Application Publication No. 2011-230550 SUMMARY

[0008] PROBLEMS TO BE SOLVED BY THE INVENTION

[0009] However, when ammonia is carried as a fuel for propulsion or a cargo, if ammonia gas leaks, it reacts with moisture in the air to become fog-like ammonia gas and floats in the air. Ammonia gas has a strong irritant effect on the mucous membranes of the human body and the like. Therefore, in the event of a leak, it is desirable to suppress contact of ammonia gas with crew members and passengers.

[0010] The present application was made to solve the above problem, and an object thereof is to provide a ship capable of effectively suppressing the influence of ammonia gas in the ship.

[0011] MEANS FOR SOLVING THE PROBLEMS

[0012] To solve the above problem, a ship according to the present application is provided with a ship body, a gas storage tank, and a water sprinkling device. The ship body has a passage. The gas storage tank is provided to the ship body and is capable of storing ammonia. The water sprinkling device is capable of sprinkling water to the passage.

[0013] EFFECTS OF THE INVENTION

[0014] According to the ship of the present application, it is possible to effectively suppress the influence of ammonia gas in the ship. Attached Figure Description

[0015] Figure 1 This is a side view of the ship involved in the embodiments of the present invention.

[0016] Figure 2 This is a diagram showing the structure of the water spraying equipment and water recycling equipment installed on the ship according to the first embodiment of the present invention.

[0017] Figure 3 This is a diagram showing the sprinkler system according to the first embodiment of the present invention as viewed from the direction of the channel's extension.

[0018] Figure 4 This is a diagram showing the sprinkler system according to the first embodiment of the present invention as viewed from the width direction of the channel.

[0019] Figure 5 This is a diagram showing the water spraying device according to the first variation of the first embodiment of the present invention, viewed from the direction of the extension of the channel.

[0020] Figure 6 This is a diagram showing the water spraying device according to the first variation of the first embodiment of the present invention, viewed from the width direction of the channel.

[0021] Figure 7 This is a diagram showing the water spraying device according to a second variation of the first embodiment of the present invention, viewed from the direction of the channel's extension.

[0022] Figure 8 This is a diagram showing the water spraying device according to the second embodiment of the present invention as viewed from the direction of the extension of the channel.

[0023] Figure 9 This is a side view of a ship according to a variation of an embodiment of the present invention. Detailed Implementation

[0024] <First Implementation>

[0025] (The overall structure of the ship)

[0026] The following is for reference. Figures 1-4 The ship involved in the embodiments of the present invention will be described.

[0027] like Figure 1 , Figure 2 As shown, the vessel 1 in this embodiment includes a hull 2, a gas storage tank 10, a water spraying device 20, and a water recycling device 30. The type of vessel 1 is not limited to a specific type of vessel. Examples of vessel 1 include liquefied gas carriers, ferries, RORO ships, car carriers, and passenger ships.

[0028] (Structure of the ship's hull)

[0029] The main body of the ship 2 includes the hull 3 and the superstructure 4.

[0030] The hull 3 has a pair of side panels 5A and 5B that constitute its outer shell and a bottom 6. The side panels 5A and 5B have a pair of side outer plates that form the port and starboard sides respectively. The bottom 6 has a bottom outer plate that connects these side panels 5A and 5B. Through these pair of side panels 5A and 5B and the bottom 6, the outer shell of the hull 3 is U-shaped in a cross section orthogonal to the bow and stern directions FA.

[0031] like Figure 1 As shown, the hull 3 also includes an upper deck 7, which is a full-length deck located at the top. In this embodiment, the upper deck 7 is an exposed deck that is exposed to the outside. Inside the hull 3, which is located below the upper deck 7, are housed a ship's main engine (not shown), which is used to propel the ship 1, a generator (not shown), and other equipment that supplies power to the ship's interior.

[0032] The superstructure 4 is installed on the upper deck 7 of the hull 3. In the vessel 1 illustrated in this embodiment, it is positioned on the side closer to the stern 3b in the bow-stern direction FA. The superstructure 4 has multiple upper decks 41 to 44 inside. The multiple upper decks 41 to 44 are spaced apart in the vertical direction Dv within the superstructure 4. Living quarters and the like are provided on the upper decks 41 to 44 inside the superstructure 4. In addition, in the vessel 1 of this embodiment, a cargo hold (not shown) is provided in the hull 3 on the side closer to the bow 3a than the superstructure 4.

[0033] (Structure of the gas storage tank)

[0034] The gas storage tank 10 stores liquefied ammonia. The liquefied ammonia, used as fuel, is supplied to the main engine and generator located within the hull 3 via a supply piping system (not shown). The gas storage tank 10 is located above the upper deck 7 of the hull 3. In this embodiment, the gas storage tank 10 is located relative to the superstructure 4 on the stern 3b side in the bow-stern direction FA. A fuel equipment room 11 is provided on the upper deck 7. Various devices (not shown) for vaporizing the liquefied ammonia in the gas storage tank 10 are housed in the fuel equipment room 11. A gas storage tank connection space 12 is provided above the gas storage tank 10. For example, a pump and valve (not shown) used when loading liquefied ammonia into the gas storage tank 10 are provided in the gas storage tank connection space 12.

[0035] Lifeboats 9 are installed on the exterior of the superstructure 4. Lifeboats 9 are used when passengers and crew of vessel 1 are escaping overboard.

[0036] Further, the ship body 2 is provided with a passage 100 serving as an evacuation path to be passed through when passengers and crew members of the ship 1 evacuate. The passage 100 is provided in a corridor in the superstructure 4, or a space such as a main station having a certain degree of width, a path to be passed through when the lifeboat 9 is boarded, the upper deck 7, and the like.

[0037] As shown in FIG. 1, the ship 1 is provided with a water sprinkling device 20. The water sprinkling device 20 is a device capable of sprinkling water toward the passage 100. The water sprinkling device 20 is provided with a water sprinkling portion 21A, a water supply pump 25, and a pump operation portion 27. Figure 2

[0038] As shown in FIG. 2, the water sprinkling portion 21A is provided extending along an extension direction De (a direction orthogonal to the plane of the paper) of the passage 100. The water sprinkling portion 21A is provided in a ceiling 45 of the superstructure 4 provided above the passage 100. The water sprinkling portion 21A is provided on both sides in a width direction Ds orthogonal to the extension direction De of the passage 100 in the horizontal plane. Each water sprinkling portion 21A is provided with a pipe 21p and a plurality of water spraying portions 22. The pipe 21p extends along the extension direction De of the passage 100. The plurality of water spraying portions 22 are provided in the pipe 21p at intervals in the extension direction De of the passage 100. Each water spraying portion 22 is a nozzle shape, and sprays water flowing in the pipe 21p toward the lower side. As shown in FIG. 3, the plurality of water spraying portions 22 are arranged such that water streams, i.e., water streams F1, sprayed from the water spraying portions 22 adjacent to each other in the extension direction De overlap with each other. As shown in FIG. 4, such a water sprinkling portion 21A is capable of sprinkling water only toward the central portion 100c and the side portions 100s of the passage 100. Figure 3 Figure 4 Figure 3 Figure 4 Figure 3

[0039] As shown in FIG. 5, the water supply pump 25 supplies water to the pipe 21p of each water sprinkling portion 21A. A water intake pipe 26 opening to the lower side of the side 5A or the like is connected to the water supply pump 25, for example. If the water supply pump 25 is operated, seawater outside the ship body 3 is sucked in through the water intake pipe 26 and is sent to the pipe 21p. Figure 2

[0040] The pump operation portion 27 switches on and off the operation of the water supply pump 25. The pump operation portion 27 operates the water supply pump 25 when an operator or the like operates a switch or the like notifying of ammonia leakage, for example. Further, the pump operation portion 27 can also operate the water supply pump 25 when ammonia leakage is detected in the gas holder 10, a supply pipe system (not shown) connected to the gas holder 10, the fuel device room 11, the gas holder connection space 12, or the like by a sensor (not shown) or the like, for example.

[0041] ​​​​​​​In such a water sprinkling device 20, when ammonia leakage occurs, the feed water pump 25 is operated by the pump operating portion 27. In this way, seawater outside the ship body 3 is sucked in through the water intake pipe 26 and is sent to the piping 21p of the water sprinkling portion 21A. As shown in Figure 3 In the water sprinkling portion 21A, a film-like, curtain-like water flow F1 is formed along the extending direction De on both sides of the width direction Ds of the passage 100 by the water sprayed from the plurality of water spraying portions 22. This water flow F1 is formed between the passage 100 and the ceiling 45 so as to separate the area of the passage inner 100i on the inner side of the width direction Ds of the passage 100 and the area of the passage outer 100o on the outer side of the width direction Ds of the side portion 100s. If the water of the water flow F1 contacts ammonia gas, it absorbs the ammonia gas to become ammonia-absorbed water and flows down. Therefore, the invasion of ammonia gas from the passage outer 100o into the passage inner 100i is suppressed. Also, by the water flow F1, an air flow F2 in the same direction as the water flow F1 is generated in the air around the water flow F1. By these water flow F1 and air flow F2, the invasion of ammonia gas or mist-like ammonia from the passage outer 100o into the passage inner 100i is also suppressed.

[0042] In addition, this water sprinkling device 20 can also be used as a sprinkler or the like when a fire occurs.

[0043] As shown in Figure 2 The water recovery device 30 is provided with a water recovery portion 31, a drain portion 32, and a water storage portion 34.

[0044] The water recovery portion 31 recovers the water sprinkled by the water sprinkling device 20. As shown in Figure 2 In the embodiment of the present application, the water recovery portion 31 has, for example, a recovery tray 31A recessed downward. The recovery tray 31A is provided below the passage 100. The recovery tray 31A is provided continuously along the extending direction De. The recovery tray 31A is provided protruding to both sides of the width direction Ds of the passage 100. Instead of the recovery tray 31A, the water recovery portion 31 can also be provided with a groove on each of both sides of the width direction Ds of the passage 100.

[0045] As shown in Figure 2 A recovery pipe 31B is connected to the recovery tray 31A. The recovery pipe 31B guides the water recovered by the recovery tray 31A to the drain portion 32 or the water storage portion 34. Also, when the passage 100 in which the water sprinkling portion 21A is provided is provided on the upper deck 7, the recovery pipe 31B recovers the water flowing on the upper deck 7. The upper deck 7 is inclined downward toward the outside of the ship width direction Dw from the central portion of the ship width direction Dw. Therefore, the recovery pipe 31B can also be provided so as to open on the upper deck 7 at a position close to the side 5B (or 5A) provided on the outside of the ship width direction Dw. Also, a collection portion 31t bent or folded downward is provided to the recovery pipe 31B. By this collection portion 31t, the backflow of ammonia gas from the water storage portion 34 side to the passage 100 side is suppressed.

[0046] The drain 32 discharges water recovered by the water recovery portion 31 to the outside of the ship 1. The drain 32 is tubular and branches from the recovery pipe 31B. The drain 32 is provided to open, for example, to the side 5B (or 5A). Here, the drain 32 can also be provided to open to the side 5B opposite the side 5A from which the water intake pipe 26 that intakes seawater for spraying by the water sprinkling device 20 opens in the ship width direction Dw. The drain 32 discharges water recovered by the water recovery portion 31 to the outside of the ship 1 from the side 5B.

[0047] The water storage portion 34 is provided in the ship body 3. The water storage portion 34 is a water tank that stores water recovered by the water recovery portion 31. The water tank drain 35 provided to branch from the recovery pipe 31B supplies water recovered by the water recovery portion 31 to the water storage portion 34. This water storage portion 34 can also be used as a water tank that stores water for other purposes at ordinary times (when no ammonia leakage occurs).

[0048] The drain 32 and the water tank drain 35 are each provided with an opening and closing valve 32V, 35V. The opening and closing operation of the opening and closing valves 32V, 35V is remotely operated by the valve opening and closing portion 37. If the water pump 25 is operated due to the occurrence of ammonia leakage, the valve opening and closing portion 37 opens at least one of the opening and closing valves 32V, 35V. The valve opening and closing portion 37 can be, for example, such that the concentration of ammonia contained in water recovered by the water recovery portion 31 is detected by a sensor (not shown), and one of the opening and closing valves 32V or 35V is opened in accordance with the detected concentration of ammonia. Specifically, it can be such that if the concentration of ammonia is lower than a predetermined reference, the opening and closing valve 32V is opened, and water is discharged to the outside of the ship from the drain 32. Also, it can be such that if the concentration of ammonia is higher than a predetermined reference, the opening and closing valve 35V is opened, and water is stored by the water storage portion 34.

[0049] In the water storage portion 34, a treatment to lower the concentration of ammonia or a neutralization treatment by seawater or the like additionally introduced from the outside, or the like can be performed. Also, for example, the opening and closing switching operation of the opening and closing valves 32V, 35V can be performed in accordance with the water level of the water storage portion 34 that becomes a full water state or the like, whereby water flowing in the recovery pipe 31B is discharged to the outside of the ship 1. Also, the opening and closing switching operation of the opening and closing valves 32V, 35V can be performed by the judgment of the crew instead of remote operation.

[0050] The ship 1 of the above-described embodiment sprays water to the passage 100 by the water sprinkling device 20 at the time of leakage of ammonia stored in the gas tank 10 or ammonia sent to the piping system or the like from the gas tank 10. The inside 100i and the outside 100o of the passage are separated by water sprayed by the water sprinkling device 20, whereby the intrusion of ammonia gas or misty ammonia into the passage 100 can be suppressed. Thus, the contact of ammonia gas with passengers and crew passing through the passage 100 is suppressed. Therefore, the influence of ammonia gas can be effectively suppressed in the ship 1.

[0051] In the above embodiment, the water spraying device 20 is capable of spraying water only to the central portion 100c and the side portion 100s among the side portions 100s in the width direction Ds of the passage 100. Thereby, the inside 100i and the outside 100o of the passage are separated by the water sprayed to the side portions 100s of the passage 100, and the ammonia gas is suppressed from intruding into the inside 100i of the passage.

[0052] In the above embodiment, the water is sprayed from the plurality of water spraying portions 22 provided at intervals in the extension direction De of the passage 100, and the inside 100i and the outside 100o of the passage are separated in the extension direction De of the passage 100, and the ammonia gas is suppressed from intruding into the inside 100i of the passage.

[0053] In the above embodiment, the water spraying portions 21A are provided above the passage 100 and on both sides in the width direction Ds of the passage 100, respectively. Thereby, the inside 100i and the outside 100o of the passage are separated on both sides in the width direction Ds of the passage 100 by the water sprayed from above the passage 100, and the ammonia gas is suppressed from intruding into the inside 100i of the passage.

[0054] In the above embodiment, the water sprayed by the water spraying device 20 is capable of being recovered by the water recovery portion 31 provided below the passage 100. Thereby, the water containing ammonia by contacting with the ammonia gas is capable of being recovered, and the increase of the ammonia concentration remaining around the passage 100 is suppressed.

[0055] In the above embodiment, the water recovered by the water recovery portion 31 is capable of being discharged to the outside of the ship by the drain portion 32.

[0056] In the above embodiment, the water recovered by the water recovery portion 31 is capable of being stored in the water storage portion 34. In the water storage portion 34, for example, the treatment of diluting or neutralizing the ammonia contained in the recovered water, or the like, is capable of being performed.

[0057] (First Modification of the First Embodiment)

[0058] In the above first embodiment, the water spraying portion 21A has the pipe 21p and the plurality of water spraying portions 22, but is not limited thereto.

[0059] For example, as shown in FIG. 10, the water spraying portion 21A can have a single water spraying portion 22A. Figure 5 、 Figure 6As shown, in this first modified example, the sprinkler units 21B of the sprinkler device 20 are respectively provided on both sides of the canopy 45 provided above the channel 100 in the width direction Ds. Each sprinkler unit 21B has a flow channel 23. The flow channel 23 extends along the extension direction De of the channel 100, and water flows inside it. The flow channel 23 has an opening or slit 23s that is continuous along the extension direction De in its upper or side portion. The flow channel 23 allows water to flow downward from the opening or slit 23s. The water flow F3 flowing down from the flow channel 23 is in the form of a film. Thus, the sprinkler units 21B can spray water only on the side portion 100s of the central portion 100c and the side portion 100s in the width direction Ds of the channel 100.

[0060] (Second variation of the first embodiment)

[0061] Furthermore, in the first embodiment described above, the water spraying section 21A is provided on both sides of the width direction Ds of the channel 100, but it is not limited thereto.

[0062] For example, such as Figure 7 As shown, the sprinkler unit 21C of the sprinkler system 20 is positioned above the center portion 100c of the channel 100 in the width direction Ds. The sprinkler unit 21C includes a piping 21q and multiple spray nozzles 24. The piping 21q extends along the extension direction De of the channel 100. Figure 7 The water spray section 24 extends in a direction perpendicular to the paper plane. Multiple water spray sections 24 are spaced apart in the extending direction De of the channel 100 and are installed in the piping 21q. Each water spray section 24 is nozzle-shaped and sprays water flowing within the piping 21q obliquely downwards in the width direction Ds. The multiple water spray sections 24 have a first nozzle 25A that sprays water flow F4 onto a first side of the channel 100 in the width direction Ds, and a second nozzle 25B that sprays water flow F5 onto a second side of the channel 100 in the width direction Ds. With this arrangement, the water spray section 21C can spray water only onto the central portion 100c and the side portion 100s of the channel 100 in the width direction Ds.

[0063] <Second Implementation>

[0064] Next, a second embodiment of the vessel according to the present invention will be described. In the second embodiment described below, only the structure of the water spraying unit 21D differs from that of the first embodiment. Therefore, the parts that are the same as those in the first embodiment will be described using the same symbols, and repeated descriptions will be omitted.

[0065] like Figure 8As shown, the water spraying equipment 20 installed on the ship 1 includes a spraying section 21D. The spraying section 21D is installed on a wall 46 provided on the first side of the passage 100 in the width direction Ds. The spraying section 21D is installed at the upper part of the passage 100. Each spraying section 21D, like the spraying section 21A of the first embodiment described above, includes a piping 21p and a plurality of spraying sections 22D. The piping 21p extends along the extension direction De( of the passage 100) Figure 8 The water spray section 22D extends in a direction perpendicular to the paper plane. Multiple water spray sections 22D are spaced apart in the extending direction De of the channel 100 and are installed in the pipe 21p. Each water spray section 22D is nozzle-shaped and sprays water flowing within the pipe 21p obliquely downwards toward the second side in the width direction Ds to form a water flow F6. With this arrangement, the water spray section 21D can spray water only onto the central portion 100c and the side portion 100s on the second side of the width direction Ds of the channel 100.

[0066] In the vessel 1 described above, the first side of the passage 100 in the width direction Ds is closed by a wall 46. By spraying water onto the second side of the passage 100 in the width direction Ds from a spraying unit 21D provided on the wall 46, water flow F6 can separate the inner 100i and the outer 100o of the passage 100 in the width direction Ds of the passage 100, thus suppressing ammonia gas from entering the inner 100i of the passage. This prevents ammonia gas from coming into contact with passengers and occupants passing through the passage 100. Therefore, the effects of ammonia gas can be effectively suppressed within the vessel 1.

[0067] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to these embodiments and may include design changes that do not depart from the spirit of the present invention.

[0068] In addition, in the above embodiment, a water recycling device 30 is provided. However, for example, when the channel 100 is provided on the upper deck 7, the water sprayed by the sprinkler device 20 can be discharged from the upper deck 7 to the outside of the ship through the openings (not shown) formed on the sides 5A and 5B by the water gradient that slopes downward from the center of the upper deck 7 in the width direction Dw toward the sides 5A and 5B.

[0069] Furthermore, in the above embodiment, an air tank 10 and an air tank connection space 12 are provided on the stern 3b side relative to the upper structure 4, but it is not limited to this.

[0070] For example, such as Figure 9 As shown, an air tank 10 and an air tank connection space 12 can also be installed on the upper deck 7 on the bow 3a side relative to the superstructure 4. In this case, a water spraying device 20, the same as in the above embodiment, can be installed in the passageway 100 in an area designed to be affected by ammonia leakage.

[0071] Further, not limited to the upper deck 7, when the gas tank 10 or the like is provided in the lower side of the upper deck 7 in the hull 3, it is also possible to provide the water sprinkling device 20 same as the above-described embodiment in the passage 100 set as the area where the influence of ammonia leakage is assumed.

[0072] Further, the ammonia is not limited to be used as fuel for the ship main engine or the like for propelling the ship 1, but can be a cargo transported by the ship 1. In such a case, it is also possible to provide the water sprinkling device 20 same as the above-described embodiment in the passage 100 set as the area where the influence of ammonia leakage is assumed.

[0073] <Notes>

[0074] The ship 1 described in each embodiment can be understood as follows, for example.

[0075] (1) The ship 1 according to the first aspect includes: a ship body 2 having a passage 100; a gas tank 10 provided to the ship body 2 and capable of storing ammonia; and a water sprinkling device 20 capable of sprinkling water to the passage 100.

[0076] The ammonia stored in the gas tank 10 is fuel of the ship 1 or a cargo transported by the ship 1.

[0077] The ship 1 sprinkles water to the passage 100 by the water sprinkling device 20 when the ammonia stored in the gas tank 10 or the ammonia sent from the gas tank 10 to the piping system or the like is leaked. By the water sprinkled by the water sprinkling device 20, the inside 100i and the outside 100o of the passage are separated, and thus the ammonia gas resulting from the leaked ammonia is suppressed from intruding into the passage 100. Thus, the ammonia gas is suppressed from contacting the passengers and crew members passing through the passage 100. Therefore, the influence of the ammonia gas can be effectively suppressed in the ship 1.

[0078] (2) The ship 1 according to the second aspect is the ship 1 according to the first aspect, wherein the water sprinkling device 20 is capable of sprinkling water only to the side portion 100s of the central portion 100c and the side portions 100s of the passage 100 in the width direction Ds.

[0079] Thus, by the water sprinkled only to the side portions 100s of the passage 100, the inside 100i and the outside 100o of the passage are separated, and thus the ammonia gas is suppressed from intruding into the inside 100i of the passage.

[0080] (3) The ship 1 according to the third aspect is the ship 1 according to the first or second aspect, wherein the water sprinkling device 20 includes water sprinkling portions 21A, 21C, 21D having a plurality of water spraying portions 22, 22D spaced apart in the extension direction De of the passage 100.

[0081] Thus, by spraying water from the plurality of water spraying portions 22, 22D provided at intervals in the extension direction De of the passage 100, the passage inner 100i and the passage outer 100o can be separated along the extension direction De of the passage 100, thereby suppressing the intrusion of ammonia gas into the passage inner 100i.

[0082] (4) The ship 1 according to the fourth aspect is the ship 1 according to the third aspect, wherein the water spraying portions 21A, 21B are provided above the passage 100 and on both sides in the width direction Ds of the passage 100, respectively.

[0083] Thus, by spraying water from above the passage 100, the passage inner 100i and the passage outer 100o can be separated on both sides in the width direction Ds of the passage 100, thereby suppressing the intrusion of ammonia gas into the passage inner 100i.

[0084] (5) The ship 1 according to the fifth aspect is the ship 1 according to the third aspect, wherein the water spraying portion 21D is provided on a wall 46 provided on a first side in the width direction Ds of the passage 100, and sprays water toward a second side in the width direction Ds of the passage 100.

[0085] Thus, the first side in the width direction Ds of the passage 100 is closed by the wall 46. By spraying water from the water spraying portion 21D provided on the wall 46 toward the second side in the width direction Ds of the passage 100, the passage inner 100i and the passage outer 100o can be separated on the second side in the width direction Ds of the passage 100, thereby suppressing the intrusion of ammonia gas into the passage inner 100i.

[0086] (6) The ship 1 according to the sixth aspect is the ship 1 according to any one of the first to fifth aspects, further comprising a water recovery portion 31 provided below the passage 100, which recovers water sprayed by the water spraying device 20.

[0087] Thus, water sprayed by the water spraying device 20 can be recovered by the water recovery portion 31 provided below the passage 100. Thus, water containing ammonia by contact with ammonia can be recovered, and the increase in the concentration of ammonia remaining in the vicinity of the passage 100 can be suppressed.

[0088] (7) The ship 1 according to the seventh aspect is the ship 1 according to the sixth aspect, further comprising a water discharge portion 32 that discharges water recovered by the water recovery portion 31 to the outside of the ship 1.

[0089] Thus, water recovered by the water recovery portion 31 can be discharged to the outside of the ship.

[0090] (8) The ship 1 according to the eighth aspect is the ship 1 according to the sixth or seventh aspect, further comprising a water storage portion 34 provided inside the ship body 2, which stores water recovered by the water recovery portion 31.

[0091] Therefore, the water recovered by the water recovery unit 31 can be stored in the water storage unit 34. In the water storage unit 34, for example, treatments such as dilution and neutralization of ammonia contained in the recovered water can also be performed.

[0092] Industrial availability

[0093] The ship according to the present invention can effectively suppress the effects of ammonia gas inside the ship.

[0094] Symbol Explanation

[0095] 1-Ship, 2-Ship hull, 3-Hull, 3a-Bow, 3b-Stern, 4-Superstructure, 5A, 5B-Side, 6-Bottom, 7-Upper deck, 9-Lifeboat, 10-Gas tank, 11-Fuel equipment room, 12-Gas tank connection space, 20-Sprinkler system, 21A, 21B, 21C, 21D-Sprinkler section, 21p, 21q-Piping, 22, 22D-Spray section, 23-Channel, 23s-Slit, 24-Spray section, 25-Water pump, 25A-First nozzle, 25B-Second nozzle, 26-Water intake pipe, 27-Pump working section, 30-Water recovery Equipment, 31-Water recovery section, 31A-Recovery tray, 31B-Recovery pipe, 32-Drainage section, 32V-On / off valve, 34-Water storage section, 35-Water tank drain pipe, 35V-On / off valve, 37-Valve opening / closing section, 41~44-Upper deck, 45-Roof, 46-Wall, 100-Passage, 100c-Central section, 100i-Inside passage, 100o-Outside passage, 100s-Side section, FA-Forehead and stern direction, De-Extension direction, Ds-Breadth direction, Dv-Up and down direction, Dw-Breadth direction, F1, F3, F4, F5, F6-Water flow, F2-Air flow.

Claims

1. A ship having: The main body of the ship has a passageway; A gas storage tank, located in the hull of the vessel, is capable of storing ammonia; and The sprinkler system is capable of spraying water onto the passageway. When an ammonia leak occurs, the water spraying equipment activates the water pump via the pump working unit, drawing seawater from outside the hull through a water intake pipe opening to the lower part of the hull and supplying it to the various pipes of the spraying unit. The vessel also possesses: A water recycling unit is located below the channel to recycle the water sprayed by the sprinkler equipment; The drainage section discharges the water recovered by the water recycling section outside the ship. A water storage unit, located within the hull of the vessel, stores water recovered by the water recycling unit; and The sensor detects the concentration of ammonia in the water recovered by the water recovery unit. If the ammonia concentration detected by the sensor is lower than a preset benchmark, the water recovered by the water recovery unit will be discharged outside the ship through the drainage section. If the concentration of ammonia detected by the sensor is higher than the preset benchmark, the water recovered by the water recovery unit is stored in the water storage unit.

2. The vessel according to claim 1, wherein, The sprinkler system is capable of spraying water only onto the central portion and the side portion of the channel in the width direction.

3. The vessel according to claim 1 or 2, wherein, The water spray section has multiple spray sections spaced apart in the extension direction of the channel.

4. The vessel according to claim 3, wherein, The water spraying units are respectively located above the channel and on both sides of the channel in the width direction.

5. The vessel according to claim 3, wherein, The water spraying unit is installed on a wall on a first side of the channel in the width direction, and sprays water onto a second side of the channel in the width direction.

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