JP2023160949A - Vessel - Google Patents

Abstract

To reduce the effort and expense for installing a double pipe.SOLUTION: A vessel includes: a barrier forming an engine chamber where a heat engine is stored along with a pair of broadsides provided on a lower layer than freeboard deck in a hull; a partition wall arranged to surround a connection part of the barrier and the broadsides and forming a water tight section extending along the vertical range of the engine chamber; a liquefied gas tank provided on a same layer as the engine chamber as well as being provided outside the engine chamber for storing liquefied gas; a pressure adjustment valve stored in a valve chamber arranged adjacent to the water tight section for adjusting the pressure of fuel gas supplied to the heat engine; tank side piping that supplies the fuel gas which is gasified liquefied gas in the liquefied gas tank to the pressure adjustment valve and is provided with, at least partially, single piping arranged in the water tight section; and heat engine side piping that supplies the fuel gas through the pressure adjustment valve to the heat engine, and is composed of double layered piping extending in the engine chamber.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD This disclosure relates to ships.

Patent Document 1 discloses a ship that includes a fuel tank provided in the hull and a drive unit that is driven using LPG (liquefied petroleum gas) stored in the fuel tank as fuel. The ship of Patent Document 1 sends LPG stored in a fuel tank to a drive section provided inside the hull through piping.

Japanese Patent Application Publication No. 2018-177012

In a ship like the one disclosed in Patent Document 1, when providing a pipe for sending LPG to a predetermined area within the ship body such as an engine room, it is necessary to surround the pipe for sending LPG with a duct or the like.
For example, it may be difficult to install a duct in an engine room or the like that accommodates a drive unit. If it is difficult to install a duct in this way, a double pipe having an inner pipe and an outer pipe may be used as the pipe for sending the liquefied gas fuel. However, when a double pipe is used as a pipe for transmitting liquefied gas fuel, the installation of the double pipe requires time and cost such as manufacturing, installation, post-installation inspection, and maintenance.

The present disclosure aims to provide a ship that can reduce the effort and cost associated with installing double pipes.

Another ship according to the present disclosure includes a hull, a bulkhead, a partition wall, a liquefied gas tank, a pressure regulating valve, tank side piping, and heat engine side piping. The hull has a pair of sides. The bulkhead is provided below the freeboard deck in the hull, and together with the pair of sides, forms an engine room in which the heat engine is accommodated. The partition wall is arranged to surround a connection between the partition wall and the side, and forms a watertight compartment extending over an upper and lower range of the engine room. The liquefied gas tank is provided on the same level as the engine room, is provided outside the engine room, and stores liquefied gas. The pressure regulating valve is housed in a valve chamber disposed adjacent to the watertight compartment, and regulates the pressure of the fuel gas supplied to the heat engine. The tank-side piping supplies the fuel gas obtained by vaporizing the liquefied gas in the liquefied gas tank to the pressure regulating valve, and has a single pipe disposed at least partially within the watertight compartment. The heat engine side piping is a double pipe that supplies the fuel gas that has passed through the pressure regulating valve to the heat engine and extends within the engine room.

According to the ship of the present disclosure, the effort and cost associated with installing double pipes can be reduced.

FIG. 1 is a side view showing the overall schematic configuration of a ship according to a reference example of the present disclosure. FIG. 2 is a plan view showing an example of the arrangement of an engine room, a watertight compartment, a first pipe, and a second pipe provided in a ship according to a reference example of the present disclosure. It is a side sectional view showing an example of arrangement of an engine room, a watertight compartment, a first piping, and a second piping provided in a ship according to a reference example of the present disclosure. FIG. 2 is a functional block diagram showing the configuration of a liquid gas tank and a fuel supply device provided in a ship according to a reference example of the present disclosure. It is a top view which shows the example of arrangement|positioning of the engine room, watertight compartment, first piping, and second piping provided in the ship based on the modified example of the reference example of this indication. FIG. 2 is a plan view illustrating an example arrangement of an engine room, a watertight compartment, tank side piping, and heat engine side piping provided in a ship according to an embodiment of the present disclosure.

<Reference example>
(Overall configuration of the ship)
Hereinafter, ships according to reference examples and embodiments of the present disclosure will be described with reference to FIGS. 1 to 5.
As shown in FIG. 1, the ship 1 of this reference example includes a hull 2, a heat engine 20, a liquefied gas tank 30A, pressure regulating valves 41M, 41G, first piping 51M, 51G, second piping 52M, It is mainly equipped with 52G. The type of ship 1 is not limited to a specific type. Examples of the type of ship 1 include a ferry, a RORO ship (Roll-on/Roll-off ship), and a PCTC (Pure Car & Truck Carrier).

The hull 2 has a pair of sides 3A, 3B and a bottom 4, which form the outer shell. The sides 3A and 3B are composed of a pair of side outer plates forming port and starboard sides, respectively. The bottom 4 has a bottom shell plate that connects these sides 3A and 3B. The pair of sides 3A, 3B and the bottom 4 form the outer shell of the hull 2 into a U-shape in a cross section perpendicular to the bow and stern direction FA.

The hull 2 has multiple deck layers inside thereof, including a freeboard deck 5 and an upper deck 8. The freeboard deck 5 in this reference example is a full deck located at the lowest level among full decks located above the load waterline. The upper deck 8 is a full deck located at the top of the full decks. The upper deck 8 of this reference example can also be called an exposed deck exposed to the outside. The hull 2 illustrated in this reference example further includes a deck 7 below the freeboard deck 5.

As shown in FIGS. 1 and 2, the hull 2 includes a bulkhead 11, a bulkhead 12, and a bulkhead 13 between the freeboard deck 5 and the deck 7. The bulkhead 11 and the bulkhead 12 are spaced apart from each other in the bow and aft direction FA. Similarly, the bulkhead 12 and the bulkhead 13 are spaced apart from each other in the bow and aft direction FA. The bulkheads 11, 12, and 13 extend from the side 3A to the side 3B, and from the freeboard deck 5 to the deck 7, respectively. In other words, the space between the freeboard deck 5 and the deck 7 is divided by these bulkheads 11, 12, and 13 in the bow and aft direction.

(Engine room configuration)
In this reference example, the compartment between the freeboard deck 5 and the deck 7 and between the bulkhead 11 and the bulkhead 13 is an engine room 10. The engine room 10 includes a main engine room 10A and a generator room 10B.
The main engine room 10A is formed by the sides 3A and 3B, the freeboard deck 5 and the deck 7, a bulkhead 11, and a bulkhead 12. The generator room 10B is formed by the sides 3A and 3B, the freeboard deck 5 and the deck 7, the bulkhead 12, and the bulkhead 13. The engine room 10 and the generator room 10B are adjacent to each other in the bow and aft direction FA. In addition, in this reference example, watertight compartments S11 and S12 (described later) are not included in the engine room 10 even if they are between the partition wall 11 and the partition wall 13 (hereinafter, the watertight compartments S11 and S12 (described later) are not included in the engine room 10 (hereinafter, a modification of the reference example and a modification of the embodiment). The same applies to watertight compartments).

(Configuration of watertight compartment)
Watertight sections S11 and S12 are provided between the freeboard deck 5 and the deck 7. The watertight sections S11 and S12 are arranged symmetrically in the ship width direction W with the center C of the ship body 2 in the ship width direction W interposed therebetween. The watertight compartments S11 and S12 are surrounded by the sides 3A and 3B and the compartment walls 15A and 15B, and are formed between the freeboard deck 5 and the deck 7 over the entire upper and lower parts of the engine room 10. The partition walls 15A and 15B in this reference example are formed by a part of the partition wall 12 and partition walls 16A and 16B (described later).

The partition 12 includes a first partition 12a, a second partition 12b, a third partition 12c, a fourth partition 12d, and a fifth partition 12e.
The first bulkhead portion 12a is connected to the side 3A and extends inward in the ship width direction W from the side 3A. The second bulkhead portion 12b is provided so as to be continuous with the inner edge of the first bulkhead portion 12a in the ship width direction W, and extends toward the stern side in the bow and stern direction FA. The second bulkhead portion 12b is provided on the inside of the hull 2 in the ship width direction W with a space therebetween relative to the side 3A.

The third bulkhead portion 12c is provided so as to be continuous with the edge of the second bulkhead portion 12b on the stern side in the bow and aft direction FA, and extends in the ship width direction W. The third partition wall portion 12c is provided so as to extend from the watertight section S11 to the watertight section S12. The fourth bulkhead portion 12d is provided symmetrically with the second bulkhead portion 12b in the ship width direction W. The fourth bulkhead portion 12d extends from the edge of the third bulkhead portion 12c on the starboard side in the ship width direction W toward the bow side in the bow and aft direction FA. The fifth bulkhead portion 12e is provided symmetrically with the first bulkhead portion 12a in the ship width direction W. The fifth bulkhead portion 12e extends outward in the ship width direction W from the edge of the fourth bulkhead portion 12d on the bow side in the bow and aft direction FA, and is connected to the side 3B.

The partition wall 16A on the port side (in other words, the port side 3A side) includes a first partition wall portion 16a and a second partition wall portion 16b. The first partition wall portion 16a is provided at a distance from the first partition wall portion 12a in the bow and aft direction FA. The first partition wall portion 16a is connected to the side 3A and extends inward in the ship width direction W from the side 3A in parallel with the first bulkhead 12a. The second partition wall portion 16b is provided continuously from the inner edge of the first partition wall portion 16a in the ship width direction W. The second partition wall portion 16b is provided on the inside of the hull 2 in the ship width direction with a space therebetween relative to the side 3A. The second partition wall portion 16b is provided so as to extend in the bow and aft direction FA so as to be continuous with the second partition wall portion 12b.

The partition wall 16B on the starboard side (in other words, on the port side 3B side) includes a third partition wall portion 16c and a fourth partition wall portion 16d. The third partition wall portion 16c is provided at a distance from the fifth partition wall portion 12e in the bow and aft direction FA. The third partition wall portion 16c is connected to the side 3B and extends inward in the ship width direction W from the side 3B in parallel with the fifth bulkhead 12e. The fourth partition wall 16d is provided so as to be continuous from the inner edge of the third partition wall 16c in the ship width direction W. The fourth partition wall portion 16d is provided on the inside of the hull 2 in the width direction with a space therebetween with respect to the side 3B. The fourth partition wall portion 16d is provided so as to extend in the bow and aft direction FA so as to be continuous with the fourth partition wall portion 12d.

The port side partition wall 15A is formed by a first partition wall part 12a and a second partition wall part 12b that are part of the partition wall 12, and a first partition wall part 16a and a second partition wall part 16b that constitute the partition wall 16A. has been done. The watertight section S11 on the port side includes a port side 3A, a first partition wall part 12a and a second partition wall part 12b that are part of the partition wall 12, and a first partition wall part 16a and a second partition wall part that constitute the partition wall 16A. It is formed by the partition wall part 16b.

The starboard side partition wall 15B is formed by a fifth partition wall part 12e and a fourth partition wall part 12d, which are part of the partition wall 12, and a third partition wall part 16c and a fourth partition wall part 16d, which constitute the partition wall 16B. has been done. The watertight section S12 on the starboard side includes a starboard side 3B, a fifth partition wall part 12e and a fourth partition wall part 12d that are part of the partition wall 12, and a third partition wall part 16c and a fourth partition wall part that constitute the partition wall 16B. It is formed by the partition wall portion 16d.

The watertight sections S11 and S12 are provided so as to straddle both sides of the third bulkhead portion 12c in the bow and aft direction FA of the bulkhead 12. In the present disclosure, the watertight sections S11 and S12 function as flood prevention rooms Sa and Sb that prevent water from entering the engine room 10 from outside the ship when the sides 3A and 3B are damaged.

(Duct configuration)
As shown in FIG. 3, the hull 2 includes ducts D1 and D2 above the watertight sections S11 and S12. The ducts D1 and D2 extend upward from the upper ends of the watertight sections S11 and S12 along the sides 3A and 3B. The lower ends of the ducts D1 and D2 communicate with the watertight sections S11 and S12. The upper ends of the ducts D1 and D2 open upward on the upper deck 8. Here, in this reference example, the watertight sections S11 and S12 have a larger horizontal cross-sectional area than the ducts D1 and D2. In this reference example, the freeboard deck 5 is a vehicle deck on which vehicles can board. The ducts D1 and D2 are provided so as to penetrate in the height direction the compartment in which the vehicle is mounted.

(Configuration of heat engine)
As shown in FIGS. 2 and 3, the heat engine 20 is housed within the engine room 10. As shown in FIGS. The heat engine 20 is an internal combustion engine or an external combustion engine that uses liquefied gas as fuel. The ship 1 in this reference example includes a main engine 21 and a generator engine 22 as a heat engine 20.
The main engine 21 is located within the main engine room 10A. The main engine 21 exerts a propulsive force that causes the ship 1 to sail. The main engine 21 rotates a screw 9 (see FIG. 1) provided outside the rear part 2b of the hull 2. The main engine 21 can be, for example, a steam turbine, a gas turbine, a reciprocating engine, or the like. In the present disclosure, two sets of the main engine 21 and the screw 9 are provided at intervals in the ship width direction W.

The generator engine 22 is arranged within the generator room 10B. The generator engine 22 drives a generator (not shown). For example, a gas turbine, a reciprocating engine, or the like can be used as the generator engine 22. The rotational energy generated by the generator engine 22 is converted into electrical energy by the generator and supplied to various parts within the hull 2 . In the present disclosure, three generator engines 22 are provided at intervals in the ship width direction W.

(Liquefied gas tank configuration)
As shown in FIG. 1, the liquefied gas tank 30A is provided outside the engine room 10. In the present disclosure, the liquefied gas tank 30A is provided on the upper deck 8 of the rear part 2b of the hull 2. In the present disclosure, a plurality of liquefied gas tanks 30A (for example, two) are provided at intervals in the ship width direction W. The liquefied gas tank 30A in this reference example is a dedicated fuel tank for storing liquefied gas such as liquefied natural gas (LNG) that serves as fuel for the main engine 21, generator engine 22, and the like.

(Configuration of liquefied gas tank ancillary equipment)
The hull 2 further includes a vent riser 31, a bunker station 33, and a fuel supply device 35. The vent riser 31 is provided so as to extend upward. The vent riser 31 discharges boil-off gas vaporized within the liquefied gas tank 30A in an emergency or the like. The bunker station 33 loads and unloads the liquefied gas tank 30A to and from land. The bunker station 33 includes a connection port that can be connected to land-side equipment, a connection pipe that connects this connection port and the liquefied gas tank 30A, and a cargo handling pump (both of which are used to supply liquefied gas through the connection pipe). (not shown), etc.

The fuel supply device 35 supplies the liquefied gas in the liquefied gas tank 30A to the heat engine 20 (main engine 21, generator engine 22). In the present disclosure, the fuel supply device 35 is provided on the upper deck 8.

As shown in FIG. 4, the fuel supply device 35 mainly includes a pump 35a, an evaporator 35b, a gas heater 35c, and a gas incinerator 35d. The pump 35a sends out the liquefied gas G1 in the liquefied gas tank 30A to first pipes 51M and 51G, which will be described later. The evaporator 35b evaporates and vaporizes the liquefied gas G1 to generate fuel gas G2. The gas heater 35c heats and increases the pressure of the boil-off gas G3 generated within the liquefied gas tank 30A. The gas incinerator 35d burns the boil-off gas G3 pressurized by the gas heater 35c.

(Configuration of pressure regulating valve)
As shown in FIG. 3, the pressure regulating valves 41M and 41G respectively adjust the pressure of the fuel gas G2 supplied to the main engine 21 of the heat engine 20 and the pressure of the fuel gas G2 supplied to the generator engine 22. The pressure regulating valves 41M and 41G are housed in a valve chamber 40G provided within the engine room 10.

As shown in FIGS. 2 and 3, the valve chamber 40M is arranged within the main engine room 10A. The valve chamber 40M has an airtight structure. The valve chamber 40M accommodates therein the same number of pressure regulating valves 41M as the main engine 21. The valve chamber 40M illustrated in this reference example is arranged on the stern side of the bulkhead 12 in the bow-stern direction FA, and is provided adjacent to the bulkhead 12. This valve chamber 40M is formed by a third partition wall 12c of the partition 12, a second partition wall 16b of the partition wall 16A, a fourth partition wall 16d of the partition wall 16B, and a valve chamber wall 42M. .

The valve chamber wall 42M is provided at a distance from the third bulkhead portion 12c on the stern side in the bow-stern direction FA. The valve chamber wall 42M extends from the second partition wall portion 16b to the fourth partition wall portion 16d, and from the freeboard deck 5 to the deck 7, respectively. In this way, the valve chamber 40M is provided adjacent to the watertight sections S11 and S12 via the second partition wall 16b (partition wall 16A) and the fourth partition wall 16d (partition wall 16B).

The valve chamber 40G is arranged within the generator chamber 10B. The valve chamber 40G has an airtight structure similar to the valve chamber 40M. The valve chamber 40G houses therein the same number of pressure regulating valves 41G as the generator engines 22. The valve chamber 40G illustrated in this reference example is arranged on the bow side of the bulkhead 12 in the bow-stern direction FA, and is provided adjacent to the bulkhead 12. The valve chamber 40M is formed by a third partition wall 12c of the partition wall 12, a second partition wall 12b, a fourth partition wall 12d, and a valve chamber wall 42G.

The valve chamber wall 42G is provided at a distance from the third bulkhead portion 12c on the bow side in the bow and aft direction FA. The valve chamber wall 42G extends from the second partition wall 12b to the fourth partition wall 12d, and from the freeboard deck 5 to the deck 7, respectively. In this way, the valve chamber 40G is provided adjacent to the watertight sections S11 and S12 via the second partition wall part 12b and the fourth partition wall part 12d of the partition wall 12.

(Configuration of first piping)
As shown in FIGS. 2 and 3, the first pipes 51M, 51G feed fuel gas G2, which is vaporized from the liquefied gas G1 in the liquefied gas tank 30A, to the pressure regulating valves 41M, 41G. The first pipes 51M, 51G connect the gas heater 35c of the fuel supply device 35 and the pressure regulating valves 41M, 41G. The first pipes 51M and 51G are single-layer pipes that do not have a protection pipe (in other words, an outer pipe) covering the outside. The first pipes 51M and 51G are provided on the upper deck 8 in an exposed state where they are exposed to the outside air.

In the hull 2 (lower than the upper deck 8), the first pipe 51M is laid in the duct D1 and the watertight section S11. The first pipe 51M is installed in the duct D1 between the upper deck 8 and the freeboard deck 5, and extends from the inside of the duct D1 through the freeboard deck 5 into the watertight section S11. The first pipe 51M extends downward from the freeboard deck 5 in the watertight section S11, and then extends inward in the ship width direction W, penetrates the second partition wall 16b, and enters the valve chamber 40M. being guided. The first pipe 51M is connected to each pressure regulating valve 41M within the valve chamber 40M. The first pipe 51M further extends from the pressure regulating valve 41M to the valve chamber wall 42M. Although not shown in the drawings, the portion where the first piping 51M penetrates the freeboard deck 5 and the portion where the first piping 51M penetrates the second partition wall 16b ensure the watertightness of the watertight section S11. Processing is carried out to ensure this (hereinafter, the same applies to the modified example of the reference example and the location where the piping is penetrated in the watertight compartment of the embodiment).

Like the first pipe 51M, the first pipe 51G is installed in the duct D2 and the watertight section S12 in the hull 2. The first pipe 51G is installed in the duct D2 between the upper deck 8 and the freeboard deck 5, and extends from the duct D2 through the freeboard deck 5 into the watertight section S12. The first pipe 51G extends downward from the freeboard deck 5 in the watertight section S12, then extends inward in the ship width direction W, penetrates the fourth bulkhead 12d, and is guided into the valve chamber 40G. It's dark. The first pipe 51G is connected to each pressure regulating valve 41G within the valve chamber 40G. The first pipe 51G further extends from the pressure regulating valve 41G to the valve chamber wall 42G.

(Configuration of second piping)
The second pipes 52M, 52G feed the fuel gas G2 via the pressure regulating valves 41M, 41G to the main engine 21, which is the heat engine 20, and the generator engine 22. The second pipes 52M and 52G are installed outside the valve chamber 40M and the valve chamber 40G. The second pipes 52M and 52G illustrated in this reference example each extend in the bow and aft direction. These second pipes 52M and 52G each form a double pipe.

The second pipe 52M includes an inner pipe 53M and an outer pipe 54M. The inner pipe 53M connects the main engine 21 to the end of the first pipe 51M that extends within the valve chamber 40M to the valve chamber wall 42M. The outer tube 54M is formed to have a larger diameter than the inner tube 53M and covers the inner tube 53M from the outside. This outer tube 54M is airtight. Therefore, even if the fuel gas G2 leaks from the inner tube 53M, the fuel gas G2 remains within the outer tube 54M.

The second pipe 52G, like the second pipe 52M, includes an inner pipe 53G and an outer pipe 54G. The inner pipe 53G connects the end of the first pipe 51G that extends to the valve chamber wall 42G within the valve chamber 40M and the generator engine 22. The outer tube 54G is formed to have a larger diameter than the inner tube 53G and covers the inner tube 53G from the outside. The outer tube 54G is configured to be airtight so that even if the fuel gas G2 leaks from the inner tube 53G, the fuel gas G2 remains within the outer tube 54M.

(Flow of fuel gas supply from liquefied gas tank to heat engine)
In the ship 1, in order to supply the fuel gas G2 from the liquefied gas tank 30A to the heat engine 20, the pump 35a of the fuel supply device 35 first sucks out the liquefied gas G1 from the liquefied gas tank 30A. The liquefied gas G1 sucked out by the pump 35a is vaporized by being evaporated by the evaporator 35b, and becomes fuel gas G2. The fuel gas G2 is sent to the pressure regulating valves 41M, 41G in the valve chambers 40M, 40G through the first pipes 51M, 51G.

The fuel gas G2 sent to the pressure regulating valves 41M, 41G through the first pipes 51M, 51G is pressure-regulated by the pressure regulating valves 41M, 41G, and then supplied to the main engine 21 of the heat engine 20 and the generator engine 22. Ru. The main engine 21 generates a driving force for rotating the screw 9 by burning the supplied fuel gas G2. The generator engine 22 drives a generator (not shown) by burning the supplied fuel gas G2.

(effect)
In the ship 1 of the above reference example, a portion of the first pipes 51M, 51G are arranged in the watertight sections S11, S12. Thereby, there is no need to make the first pipes 51M, 51G double pipes in the portions arranged in the watertight sections S11, S12.
In addition, since the valve chambers 40M and 40G are provided adjacent to the watertight sections S11 and S12, the first pipes 51M and 51G are connected to double pipes between the watertight sections S11 and S12 and the valve chambers 40M and 40G. There is no need to do so.
Therefore, according to the ship 1 of the reference example, the amount of double pipes used can be reduced, and the effort and cost associated with installing the double pipes can be suppressed.

In the ship 1 of the reference example, the liquefied gas tank 30A is provided above the engine room 10, and at least a portion of the first pipes 51M, 51G are arranged to extend in the vertical direction Dv within the watertight compartments S11, S12. There is.
Therefore, according to the ship 1 of the reference example, when the liquefied gas tank 30A is provided above the engine room 10 and the first pipes 51M and 51G extend in the vertical direction Dv, at least a portion thereof is placed in the watertight compartments S11 and S12. By arranging the double pipes, the amount of double pipes used can be reduced, and the effort and cost associated with installing the double pipes can be reduced.

The ship 1 of the reference example further includes ducts D1 and D2 that communicate with the upper ends of the watertight compartments S11 and S12 and extend upward from the watertight compartments S11 and S12 within the hull 2. The first pipes 51M, 51G are arranged in the ducts D1, D2 above the watertight sections S11, S12.
Therefore, according to the ship 1 of the reference example, by arranging the first pipes 51M, 51G in the ducts D1, D2 above the watertight sections S11, S12, the amount of double pipes used can be reduced. The effort and cost associated with pipe installation can be reduced.

In the ship 1 of the reference example, the horizontal cross-sectional area of the watertight sections S11 and S12 is larger than the horizontal cross-sectional area of the ducts D1 and D2.
Therefore, according to the ship 1 of the embodiment, the watertight sections S11 and S12 in which the first pipes 51M and 51G are arranged can be utilized as flood prevention rooms Sa and Sb having large volumes.

(Variation of reference example)
In the above reference example, the bulkhead 12 includes the first bulkhead portion 12a, the second bulkhead portion 12b, the fourth bulkhead portion 12d, and the fifth bulkhead portion 12e on both sides in the ship width direction W, but the present invention is not limited to this. do not have.
For example, the bulkhead 12A may be formed in a straight line that extends in the ship width direction W and connects the pair of sides 3A and 3B in the cross-sectional view of FIG. In this modification of the reference example, watertight sections S13, S14, S15, and S16 are provided. The watertight sections S13, S14, S15, and S16 are provided between the freeboard deck 5 and the deck 7. The watertight section S13 and the watertight section S15 are arranged symmetrically in the ship width direction W with the center C of the hull 2 in between. The watertight section S14 and the watertight section S16 are arranged symmetrically in the ship width direction W with the center C of the hull 2 in between. The watertight compartments S13 and S14 on the port side are arranged symmetrically adjacent to the bulkhead 12A on both sides in the bow and aft direction FA. The watertight compartments S15 and S16 on the starboard side are arranged symmetrically adjacent to the bulkhead 12A on both sides in the bow and aft direction FA.

The watertight compartments S13 and S14 on the port side are surrounded by the port side 3A, the first side 12f on the port side in the ship width direction W of the bulkhead 12A, and the partition walls 16C and 16D, and are surrounded by the freeboard deck 5 and the deck 7. It is formed between the upper and lower parts of the engine room 10 over the entire upper and lower parts of the engine room 10. The partition wall 16C is arranged so as to surround the connection J3 between the side 3A and the first side 12f of the partition wall 12A. The partition wall 16D is arranged so as to surround the connection J4 between the side 3B and the second side 12g of the partition wall 12A. The partition wall 16C includes a first partition wall portion 16e and a second partition wall portion 16f. The partition wall 16D includes a first partition wall portion 16g and a second partition wall portion 16h.

The first partition wall portions 16e and 16g are provided at intervals on both sides in the bow and aft direction FA with respect to the first side portion 12f. The first partition walls 16e and 16g are connected to the side 3A and extend inward in the ship width direction W from the side 3A in parallel to the first side 12f. The second partition wall portions 16f and 16h are provided at intervals on the inside of the hull 2 in the ship width direction W with respect to the side 3A. The second partition wall portions 16f, 16h connect the inner edges of the first partition wall portions 16e, 16g in the ship width direction W and the first side portion 12f.

The watertight compartments S15 and S16 on the starboard side are surrounded by the side 3B, the second side part 12g on the starboard side in the ship width direction W of the bulkhead 12A, and the partition walls 16E and 16F, and are connected to the freeboard deck 5 and the deck 7. It is formed between the upper and lower parts of the engine room 10 over the entire upper and lower parts of the engine room 10. The partition walls 16E and 16F are arranged so as to surround the connection J4 between the side 3B and the second side 12g of the partition wall 12A. The partition walls 16E and 16F each include first partition wall portions 16i and 16k and second partition wall portions 16j and 16m.

The first partition wall portions 16i and 16k are provided at intervals in the bow and aft direction FA with respect to the second side portion 12g. The first partition walls 16i, 16k are connected to the side 3B and extend inward in the ship width direction W from the side 3B in parallel with the second side 12g. The second partition walls 16j and 16m are provided at intervals on the inside of the hull 2 in the ship width direction W with respect to the side 3B. The second partition wall parts 16j, 16m are provided so as to connect the inner edges of the first partition wall parts 16i, 16k in the ship width direction W and the second side part 12g.

The watertight sections S13, S14, S15, and S16 are provided in contact with the partition wall 12A. The watertight compartments S13, S14, S15, and S16 in this modified example of the reference example are flood prevention rooms Sc and Sd that prevent water from entering the engine room 10 from outside the ship when the sides 3A and 3B are damaged. , Se, Sf.

<Embodiment>
Next, an embodiment of a ship according to the present invention will be described. The embodiment described below differs from the reference example in the arrangement of the liquefied gas tank. Therefore, the same parts as in the reference example will be described with the same reference numerals, and redundant explanation will be omitted.

(Overall configuration of the ship)
As shown in FIG. 6, the ship 1B of this embodiment includes a heat engine 20, a liquefied gas tank 30B, pressure regulating valves 41M, 41G, tank side piping 55M, 55G, and heat engine side piping in the hull 2. It is equipped with 56M and 56G.

The hull 2 is provided with a bulkhead 11, bulkheads 12B, 12C, and bulkheads 13B, 13C in order from the stern side to the bow side at intervals in the bow and aft direction FA between the freeboard deck 5 and the deck 7. It is equipped with. The bulkhead 11, the bulkheads 12B, 12C, and the bulkheads 13B, 13C each extend in the ship width direction W, from the side 3A to the side 3B, and from the freeboard deck 5 to the deck 7, respectively. That is, the space between the freeboard deck 5 and the deck 7 is divided in the bow and aft direction by the bulkhead 11, the bulkheads 12B, 12C, and the bulkheads 13B, 13C.

(Configuration of watertight compartment)
The ship 1B of the embodiment includes watertight compartments S21, S22, S23, S24, S31, S32, S33, and S34. The watertight sections S21, S22, S23, S24, S31, S32, S33, and S34 are provided between the freeboard deck 5 and the deck 7.

The watertight section S21 and the watertight section S22 are arranged symmetrically in the ship width direction with the center C of the hull 2 in between. The watertight compartments S21 and S22 are surrounded by the sides 3A and 3B and the compartment walls 15G and 15H, and are located between the freeboard deck 5 and the deck 7 above and below the engine room 10 (in other words, the main engine room 10A). It is formed throughout the area. The partition walls 15G and 15H in this embodiment are formed by a first side portion 12h and a second side portion 12i on both sides of the partition wall 12B in the ship width direction W, and partition walls 16G and 16H. The partition wall 16G is arranged so as to surround the connection J5 between the side 3A and the bulkhead 12B from the stern side. The partition wall 16H is arranged so as to surround the connection J6 between the side 3B and the bulkhead 12B from the stern side.

The port side partition wall 16G includes a first partition wall portion 16p and a second partition wall portion 16q. The first partition wall portion 16p is provided at intervals in the bow and aft direction FA with respect to the first side portion 12h. The first partition wall portion 16p is connected to the side 3A and extends inward in the ship width direction W from the side 3A in parallel to the first side 12h. The second partition wall portion 16q is provided to connect the first partition wall portion 16p and the first side portion 12h. The second partition wall portion 16q is provided on the inside of the hull 2 in the ship width direction W at a distance from the side 3A.

The starboard side partition wall 16H includes a third partition wall portion 16r and a fourth partition wall portion 16s. The third partition wall portion 16r is provided with an interval in the bow and aft direction FA with respect to the second side portion 12i. The third partition wall 16r is connected to the side 3B and extends inward in the ship width direction W from the side 3B in parallel with the second side 12i. The fourth partition wall 16s is provided to connect the inner ends of the third partition wall 16r and the second side 12i in the ship width direction W. The fourth partition wall portion 16s is provided on the inside of the hull 2 in the ship width direction with a space therebetween with respect to the side 3B.

The port side partition wall 15G is formed by a first side portion 12h that is a part of the partition wall 12B, and a first partition wall portion 16p and a second partition wall portion 16q that constitute the partition wall 16G. The watertight section S21 on the port side includes the port side 3A, a first side portion 12h that is a part of the partition wall 12B, and a first partition wall portion 16p and a second partition wall portion 16q that constitute the partition wall 16G. It is surrounded and formed.

The starboard side partition wall 15H is formed by a second side portion 12i that is a part of the partition wall 12B, and a third partition wall portion 16r and a fourth partition wall portion 16s that constitute the partition wall 16H. The watertight compartment S22 on the starboard side is divided into the starboard side 3B, a second side portion 12i that is a part of the partition wall 12B, and a third partition wall portion 16r and a fourth partition wall portion 16s that constitute the partition wall 16H. It is surrounded and formed.

The watertight sections S23 and S24 are surrounded by the sides 3A and 3B and the partition walls 16Ca and 16Ea, and are formed between the freeboard deck 5 and the deck 7 over the entire upper and lower regions of the generator room 10B. The partition wall 16Ca is arranged so as to surround the connecting portion J5 between the gunwale 3A and the first side 12h of the bulkhead 12B from the bow side. The partition wall 16Ea is arranged so as to surround the connecting portion J6 between the gunwale 3B and the second side 12i of the bulkhead 12B from the bow side. The partition wall 16Ca includes a first partition wall portion 16e and a second partition wall portion 16f. The first partition wall portion 16e forms a part of the partition wall 12C on the side closer to the side 3A. The second partition wall portion 16f is provided on the inner side of the hull 2 in the ship width direction W with respect to the side 3A so as to connect the first partition wall portion 16e and the first side portion 12h. The partition wall 16Ea includes a first partition wall portion 16i and a second partition wall portion 16j. The first partition wall portion 16i forms a part of the partition wall 12C on the side closer to the side 3B. The second partition wall 16j is provided on the inside of the hull 2 in the ship width direction W with respect to the side 3A so as to connect the first partition wall 16i and the second side 12i.

The watertight sections S31, S32, S33, and S34 are formed in the same manner as the watertight sections S21, S22, S23, and S24 described above. While the watertight sections S21, S22, S23, and S24 were formed adjacent to the partition wall 12B, the watertight sections S31, S32, S33, and S34 were formed adjacent to the partition wall 13B.

The watertight sections S31 and S32 are surrounded by the sides 3A and 3B and the partition walls 16I and 16J, and are formed between the freeboard deck 5 and the deck 7 over the entire upper and lower regions of the generator room 10B. The partition wall 16I is arranged so as to surround, from the stern side, a connecting portion J7 between the gunwale side 3A and the first side portion 13h of the bulkhead 13B. The partition wall 16J is arranged so as to surround, from the stern side, a connecting portion J8 between the side 3B and the second side 13i of the bulkhead 13B. The port side partition wall 16I includes a first partition wall portion 16t and a second partition wall portion 16u. The starboard side partition wall 16J includes a first partition wall portion 16v and a second partition wall portion 16w.

The first partition wall portion 16t is provided at intervals in the bow and aft direction FA with respect to the first side portion 13h. The first partition wall portion 16t is connected to the side 3A and extends inward in the ship width direction W from the side 3A in parallel with the first side 13h. The second partition wall portion 16q is provided to connect the first partition wall portion 16p and the first side portion 12h. The second partition wall portion 16q is provided on the inside of the hull 2 in the ship width direction W at a distance from the side 3A.

The first partition wall portion 16v is provided with an interval in the bow and aft direction FA with respect to the second side portion 13i. The first partition wall portion 16v is connected to the side 3B and extends inward in the ship width direction W from the side 3B in parallel with the second side 13i. The second partition wall portion 16w is provided to connect the first partition wall portion 16v and the second side portion 12i. The second partition wall portion 16w is provided on the inside of the hull 2 in the ship width direction W with a space therebetween with respect to the side 3B.

The watertight compartments S33 and S34 are surrounded by the sides 3A and 3B and the partition walls 16Cb and 16Eb, and are formed between the freeboard deck 5 and the deck 7 over the entire upper and lower areas of the tank room 60 (described later). There is. The partition wall 16Cb is arranged so as to surround the connecting portion J7 between the gunwale 3A and the first side 13h of the bulkhead 13B from the bow side. The partition wall 16Eb is arranged so as to surround the connecting portion J8 between the gunwale 3B and the second side 13i of the bulkhead 13B from the bow side. The partition wall 16Cb includes a first partition wall portion 16e and a second partition wall portion 16f. The first partition wall portion 16e forms a part of the partition wall 13C on the side closer to the side 3A. The second partition wall portion 16f is provided on the inside of the hull 2 in the ship width direction W with respect to the side 3A so as to connect the first partition wall portion 16e and the first side portion 13h. The partition wall 16Ea includes a first partition wall portion 16i and a second partition wall portion 16j. The first partition wall portion 16i forms a part of the partition wall 13C on the side closer to the side 3B. The second partition wall part 16j is provided on the inside of the hull 2 in the ship width direction W with respect to the side 3A so as to connect the first partition wall part 16i and the second side part 13i.

The watertight sections S21, S22, S23, and S24 are provided in contact with the partition wall 12B. The watertight sections S31, S32, S33, and S34 are provided in contact with the partition wall 13B. In this embodiment, the watertight compartments S21, S22, S23, S24, S31, S32, S33, and S34 can be accessed from the engine room 10 (and the tank room 60 described later) from outside the ship when the sides 3A and 3B are damaged, respectively. ) function as flood prevention rooms Sg and Sh that prevent water from entering.

In this embodiment, the valve chamber 40M for the main engine 21 is arranged between the partition wall 12B and the partition wall 12C, and across the watertight section S23 and the watertight section S24. The valve chamber 40G for the generator engine 22 is arranged between the partition wall 13B and the partition wall 13C, spanning the watertight section S33 and the watertight section S34.

(Liquefied gas tank configuration)
The hull 2 includes a tank room 60 adjacent to the engine room 10 on the bow side in the bow and aft direction FA. That is, the tank chamber 60 in this embodiment is provided below the freeboard deck 5.
Tank chamber 60 accommodates liquefied gas tank 30B and fuel supply device 35B. That is, the liquefied gas tank 30B and the fuel supply device 35B are provided outside the engine room 10. A plurality of liquefied gas tanks 30B illustrated in this embodiment are installed in the tank chamber 60 at intervals in the ship width direction W (for example, two tanks).

(Configuration of liquefied gas tank ancillary equipment)
The fuel supply device 35B supplies the liquefied gas G1 in the liquefied gas tank 30B to the heat engine 20 (main engine 21, generator engine 22). The fuel supply device 35B mainly includes a pump 35a, an evaporator 35b, a gas heater 35c, and a gas incinerator 35d, similar to the fuel supply device 35 of the above reference example. The tank chamber 60 has an airtight structure so that the liquefied gas G1 and the like do not leak to the outside of the tank chamber 60.

(Configuration of first piping)
The tank-side pipe 55M supplies fuel gas G2, which is obtained by vaporizing the liquefied gas G1 in the liquefied gas tank 30B, to the pressure regulating valve 41M in the valve chamber 40M. Similarly, the tank side pipe 55G supplies fuel gas G2, which is obtained by vaporizing the liquefied gas G1 in the liquefied gas tank 30B, to the pressure regulating valve 41G in the valve chamber 40G. In other words, the tank side pipe 55M connects the fuel supply device 35B and the pressure regulating valve 41M, and the tank side pipe 55G connects the fuel supply device 35B and the pressure regulating valve 41G. At least a portion of the tank-side piping 55M is arranged within the watertight sections S21 and S22. At least a portion of the tank-side piping 55G is arranged within the watertight sections S31 and S32.

The tank-side piping 55M includes a first tank-side piping 55Ma and a second tank-side piping 55Mb. The first tank-side pipe 55Ma in this embodiment is laid in a range from the fuel supply device 35B to the first partition wall 16t via the tank chamber 60, the watertight compartment S33, and the watertight compartment S31. The first tank side piping 55Ma further extends from the first partition wall portion 16e into the watertight section S23 and into the valve chamber 40M, branches within the valve chamber 40M, and is connected to two pressure regulating valves 41M. The two pressure regulating valves 41M reach the first partition wall 16p and the third partition wall 16r via the watertight section S21 and the watertight section S22, respectively. That is, the first tank-side pipe 55Ma is installed only in a watertight and airtight space partitioned off from the space in which the heat engine 20 is housed. This first tank side pipe 55Ma is a single pipe without an outer pipe (protective pipe).

The second tank-side pipe 55Mb in this embodiment is laid in a range from the first partition wall 16t to the first partition wall 16e. In other words, the second tank-side pipe 55Mb is laid in the range from the watertight section S31 to the watertight section S23, that is, the space that accommodates the generator engine 22. This second tank side piping 55Mb connects the first tank side piping 55Ma in the watertight section S31 and the first tank side piping 55Ma in the watertight section S23. This second tank side pipe 55Mb is a double pipe having an inner pipe 55Mc (in other words, a real pipe) and an outer pipe 55Md (in other words, a protection pipe).

The tank-side pipe 55G extends from the fuel supply device 35B through the tank chamber 60 to the valve chamber 40G, branches depending on the number of generator engines 22, and is connected to the pressure regulating valve 41G. The tank side pipe 55G in this embodiment is branched and connected to three pressure regulating valves 41G. Furthermore, the tank side piping 55G in this embodiment is connected from two pressure regulating valves 41G, which are arranged on both sides in the ship width direction W, out of the three pressure regulating valves 41G, through the watertight sections S31 and S32. The first partition wall portions 16t and 16v are reached. Further, the tank-side pipe 55G extends from the pressure regulating valve 41G, which is disposed at the center in the width direction W of the three pressure regulating valves 41G, to the bulkhead 13B.

(Configuration of second piping)
The heat engine side piping 56M, 56G feeds the fuel gas G2 from the tank side piping 55M, 55G to the main engine 21, which is the heat engine 20, and the generator engine 22.

The heat engine side piping 56M connects the tank side piping 55M in the watertight sections S21 and S22 to the two main engines 21, respectively. The two heat engine side pipes 56M each extend within the main engine room 10A from the first partition wall 16p toward the main engine 21 on the port side, and from the third partition wall 16r toward the main engine 21 on the starboard side. ing. These heat engine side pipes 56M are double pipes including an inner pipe 58a and an outer pipe 58b that covers the inner pipe 58a from the outside in the radial direction.

The heat engine side piping 56G connects the tank side piping 55G in the watertight sections S31 and S32 to the generator engine 22. The heat engine side piping 56G further connects the tank side piping 55G in the valve chamber 40G and the generator engine 22 at the center between the watertight sections S31 and S32 in the ship width direction W. That is, this embodiment includes three heat engine side pipes 56G. These heat engine side piping 56G connects the generator engine 22 on the port side from the first partition wall 16t in the generator room 10B, the generator engine 22 on the starboard side from the first partition wall 16v, and the ship width. They each extend from the bulkhead 13B at the center in the direction W toward the generator engine 22 at the center in the ship width direction. These heat engine side pipes 56G, like the heat engine side pipes 56M, are double pipes including an inner pipe 58a and an outer pipe 58b that covers the inner pipe 58a from the outside in the radial direction.

(Flow of fuel gas supply from liquefied gas tank to heat engine)
In the ship 1B, in order to supply the fuel gas G2 from the liquefied gas tank 30B to the heat engine 20, the pump 35a of the fuel supply device 35B first sucks out the liquefied gas G1 from the liquefied gas tank 30B. The liquefied gas G1 sucked out by the pump 35a is vaporized by being evaporated by the evaporator 35b, and becomes fuel gas G2. The fuel gas G2 is sent to pressure regulating valves 41M and 41G in the valve chambers 40M and 40G through tank side pipes 55M and 55G.

The fuel gas G2 sent to the pressure regulating valves 41M, 41G through the tank side pipes 55M, 55G has its pressure adjusted by the pressure regulating valves 41M, 41G, and then is supplied to the main engine 21 of the heat engine 20 and the generator engine 22. be done. The main engine 21 generates a driving force for rotating the screw 9 by burning the supplied fuel gas G2. The generator engine 22 drives a generator (not shown) by burning the supplied fuel gas G2.

(effect)
In the ship 1B of the above embodiment, a part of the heat engine side piping 56M is arranged in watertight sections S21, S22, S23, and S31 formed in the engine room 10.
Therefore, according to the ship 1B of the embodiment, there is no need to make the heat engine side piping 56M a double pipe in the portions arranged in the watertight sections S21, S22, S23, and S31. As a result, the amount of double pipes used can be reduced, and the effort and cost associated with installing double pipes can be reduced. Further, in the ship 1B of the embodiment, a part of the heat engine side piping 56G is arranged in watertight sections S31 and S32 formed in the engine room 10.
Therefore, according to the ship 1B of the embodiment, there is no need to make the heat engine side piping 56G a double pipe in the portions arranged in the watertight sections S31 and S32. As a result, the amount of double pipes used can be reduced, and the effort and cost associated with installing double pipes can be reduced.

(Other embodiments)
Although the embodiment of the present disclosure has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and may include design changes within the scope of the gist of the present disclosure.

In the reference example, the first pipes 51M and 51G are arranged within the ducts D1 and D2. These first pipes 51M, 51G and ducts D1, D2 do not necessarily extend straight in the vertical direction Dv. For example, the first pipes 51M, 51G may be arranged in ducts D1, D2 extending horizontally or diagonally.

In the reference example, the horizontal cross-sectional area of the watertight sections S11 and S12 is set to be larger than that of the ducts D1 and D2, but the present invention is not limited to this. The horizontal cross-sectional area of the watertight sections S11 and S12 may be equal to or larger than that of the ducts D1 and D2.

In the reference example, the liquefied gas tank 30A is provided on the upper deck 8 above the engine room 10. However, the liquefied gas tank 30A may be arranged below the upper deck 8. In the reference example, the valve chamber 40M for the main engine 21 and the valve chamber 40G for the generator engine 22 are provided separately. The valve 41G may be housed in one valve chamber.

In the reference example and embodiment, the valve chambers 40M and 40G were provided so as to be in contact with both the watertight sections S11, S12, S13, S14, S15, S16, S21, and S22 on both sides in the ship width direction W, but the present invention is not limited to this. do not have. The valve chambers 40M and 40G may be provided so as to be in contact with only one of the watertight sections S11, S12, S13, S14, S15, S16, S21, and S22.

In the reference example and embodiment, the valve chambers 40M and 40G may have a watertight structure like the watertight sections S11, S12, S13, S14, S15, S16, S21, and S22. In that case, the partition walls 16A, 16B, 16C, 16D, 16E, 16F, 16G, 16H does not have to have a watertight structure.

In the reference example and the modification of the reference example, the valve chambers 40M and 40G are provided in the engine room 10, but the present invention is not limited to this. The valve chambers 40M and 40G may be provided outside the engine room 10.

In the reference examples and embodiments, the main engine 21 and the generator engine 22 are shown as the heat engine 20, but the heat engine 20 is not limited thereto. The heat engine 20 to which the fuel gas G2 is supplied from the liquefied gas tanks 30A and 30B may be only one of the main engine 21 and the generator engine 22. In that case, the other to which the fuel gas G2 is not supplied may be a heat engine, an electric motor, or the like that uses fuel other than the fuel gas G2.

In the embodiment, the case where the tank side piping 55M passes through the watertight sections S23 and S33 is illustrated. However, the tank side piping 55M may not pass through the watertight sections S23 and S33, but may instead pass through the valve chambers 40M and 40G, for example. Further, a case is illustrated in which the heat engine side pipe 56G, which is disposed at the center of the three heat engine side pipes 56G in the ship width direction W, extends from the partition wall 13B toward the generator engine 22. However, if the distance from the generator engine 22 to the watertight compartment S31 or the watertight compartment S32 is shorter than the distance from the generator engine 22 to the bulkhead 13B, the tank side piping 55G and the heat engine side piping 56G can be made watertight. It may be made to pass through the section S31 or the watertight section S32.

<Additional notes>
The ship 1 described in each embodiment is understood as follows, for example.

(1) A ship 1 according to a first aspect includes a hull 2B having a pair of sides 3A and 3B, and a hull 2B provided in a lower layer than a freeboard deck 5 in the hull 2, and together with the pair of sides 3A and 3B. , are arranged so as to surround the partition walls 12B, 13B forming the engine room 10 in which the heat engine 20 is housed, and the connection parts J5, J6, J7, J8 between the partition walls 12B, 13B and the sides 3A, 3B, Partition walls 16G, 16H, 16I, 16J forming watertight compartments S21, S22, S31, S32 extending over the upper and lower ranges of the engine room 10 are provided on the same level as the engine room 10, and Fuel stored in a liquefied gas tank 30B provided outside and storing liquefied gas G1, and valve chambers 40M and 40G arranged adjacent to the watertight sections S21, S22, S31, and S32, and supplied to the heat engine 20. Pressure regulating valves 41M, 41G adjust the pressure of the gas G2, and the fuel gas G2, which is vaporized from the liquefied gas G1 in the liquefied gas tank 30B, is supplied to the pressure regulating valves 41M, 41G, so that at least a part of the fuel gas G2 is supplied to the pressure regulating valves 41M, 41G. Tank-side piping 55M, 55G arranged in watertight compartments S21, S22, S31, S32 and the space in which the heat engine 20 is housed, and the fuel gas G2 passing through the pressure regulating valves 41M, 41G. Heat engine side pipes 56M and 56G made of double pipes that feed the heat engine 20 are provided.

In this ship 1B, at least a portion of the tank side pipes 55M and 55G are arranged in watertight sections S21, S22, S31, and S32. There is no need for double pipes in the portions located within the watertight sections S21, S22, S31, and S32.
Therefore, the usage of the heat engine side pipes 56M and 56G, which are double pipes, can be reduced, and the effort and cost associated with installing the double pipes can be suppressed.
Examples of the heat engine 20 include a main engine 21 and a generator engine 22.

(2) The ship 1 of the second aspect is the ship 1 of (1), in which the heat engine side pipes 56M, 56G are the tank side pipes 55M, 55G and the heat engine 20 are connected.

Thereby, the amount of double pipes used can be reduced, and the effort and cost associated with installing double pipes can be suppressed.

(3) The ship 1 of the third aspect is the ship 1 of (1) or (2), and is adjacent to the engine room 10 on the bow side in the bow and stern direction, and houses the liquefied gas tank 30B. An airtight tank chamber 60 is provided.

As a result, when the liquefied gas tank 30B is placed in the tank room 60 on the bow side of the engine room 10, the amount of double pipes used can be reduced, and the effort and cost associated with installing the double pipes can be reduced. .

(4) The ship 1 according to the fourth aspect is the ship 1 according to (3), in which the tank chamber 60 accommodates a fuel supply device 35B that supplies the liquefied gas in the liquefied gas tank 30B to the heat engine 20. do.

1, 1B... Vessel 2, 2B... Hull 2b... Rear 3A, 3B... Broadside 4... Bottom 5... Freeboard deck 7... Deck 8... Upper deck 9... Screw 10... Engine room 10A... Main engine room 10B... Generator room 11... Partition wall 12, 12A, 12B, 12C... Partition wall 12a... First partition part 12b... Second partition part 12c... Third partition part 12d... Fourth partition part 12e... Fifth partition part 12f, 12h... First side part 12g, 12i...second side part 13, 13B, 13C...partition wall 15A, 15B, 15G, 15H...partition wall 16A-16H...partition wall 16a, 16e, 16g, 16i, 16k, 16p...first partition wall part 16b, 16f, 16h, 16j, 16m, 16q...Second partition wall part 16c, 16r...Third partition wall part 16d, 16s...Fourth partition wall part 20...Heat engine 21...Main engine 22...Generator engine 30A, 30B... Liquefied gas tank 31... Vent riser 33... Bunker station 35, 35B... Fuel supply device 35a... Pump 35b... Evaporator 35c... Gas heater 35d... Gas incinerator 40G, 40M... Valve chamber 41G, 41M... Pressure adjustment valve 42G, 42M... Valve chamber Wall 51G, 51M...First piping 52G, 52M...Second piping 54G, 54M...Outer pipe 55G, 55M...Tank side piping 56G, 56M...Heat engine side piping 58b...Outer pipe 60...Tank room D1, D2...Duct G1 ...Liquefied gas G2...Fuel gas G3...Boil-off gas J1-J6...Connection part S11-S16...Watertight compartment S21-S24...Watertight compartment S31-S34...Watertight compartment Sa-Sh...Flood prevention room W...Ship width direction

Claims (4)

a hull having a pair of sides;
a bulkhead that is provided below the freeboard deck in the hull and forms, together with the pair of sides, an engine room in which a heat engine is accommodated;
a partition wall that is arranged to surround a connection between the bulkhead and the side and forms a watertight compartment that extends over an upper and lower range of the engine room;
a liquefied gas tank that is provided on the same level as the engine room and outside the engine room and stores liquefied gas;
a pressure regulating valve accommodated in a valve chamber disposed adjacent to the watertight compartment and regulating the pressure of fuel gas supplied to the heat engine;
tank-side piping that supplies the fuel gas obtained by vaporizing the liquefied gas in the liquefied gas tank to the pressure regulating valve, and has a single pipe located at least partially within the watertight compartment;
a heat engine side piping made of a double pipe that supplies the fuel gas via the pressure regulating valve to the heat engine and extends within the engine room;
A ship equipped with The heat engine side piping is
The ship according to claim 1, wherein the tank-side piping in the watertight compartment and the heat engine are connected. The ship according to claim 1, further comprising an airtight tank room that is adjacent to the engine room on the bow side in the bow and stern direction and accommodates the liquefied gas tank. The ship according to claim 3, wherein the tank chamber accommodates a fuel supply device that supplies the liquefied gas in the liquefied gas tank to the heat engine.

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