KR20240101838A - liquefied gas carrier - Google Patents

Abstract

A liquefied gas carrier has a hull with defined bow compartments, cargo compartments and stern compartments arranged in the direction from the bow to the captain, an engine room arranged below the upper deck in the stern compartment of the hull, and an engine room arranged above the engine room in the stern compartment of the hull. It is provided with a first upper deck floor. The upper structure has a first opening on at least a portion of both sides in the ship width direction, a first upper deck floor at substantially the same floor level as the upper deck, and a first upper floor above the first upper deck floor, and a first upper deck. A cargo equipment room is located on the floor.

Description

liquefied gas carrier

The present invention relates to liquefied gas carriers.

Liquefied gas carriers that transport liquefied gas such as LNG or liquefied hydrogen are known. In some liquefied gas carriers, a cargo tank is arranged in a cargo compartment in the center of the hull in the direction of the captain, and an engine room is arranged in the hull at the stern side rather than the cargo compartment. In such a liquefied gas carrier, a fuel gas pipe is laid from the cargo tank to the rear of the engine room in order to use vaporized gas generated by natural evaporation of the cargo, liquefied gas, as fuel in the main engine in the engine room. Between the cargo tank and the engine room, a cargo equipment room containing equipment for transferring vaporized gas to the engine room or land facilities is installed.

In the patent document, an LNG ship is provided with a stern superstructure and a plurality of spherical tanks arranged from the bow side toward the captain rather than the stern superstructure, and equipment placement areas are installed on the deck on the port side and starboard side between the spherical tanks. It has been disclosed. In these equipment placement areas, a manifold for unloading and a gas equipment room (cargo equipment room) are placed.

Japanese Patent Laid-open Publication No. 2015-229430

In the LNG ship disclosed in the patent document, the cargo tank is spherical and the space between the spherical tanks is used as the equipment arrangement area where the cargo equipment room is placed. However, the cargo tank is not only limited to a spherical shape, but also the cargo tank or cargo equipment Due to the increase in size, it may become impossible to secure sufficient device placement area.

The present invention was made in consideration of the above circumstances, and its purpose is to arrange the cargo equipment room in a position suitable for the transfer of vaporized gas serving as fuel to the engine room in a liquefied gas carrier, and at the same time ensure a sufficient placement area for the cargo equipment room. Propose a structure.

A liquefied gas carrier according to an embodiment of the present invention includes a hull defined by a bow section, a cargo section, and a stern section arranged in the direction from the bow to the captain, an engine room disposed below the upper deck in the stern section of the hull, and A first upper deck floor disposed above the engine room in the stern section of the hull, having first openings in at least a portion of both walls in the ship width direction, and having a floor level substantially the same as the upper deck, and a floor higher than the first upper deck floor It is characterized in that it is provided with a first upper floor and a stern superstructure in which a cargo equipment room is arranged on the first upper floor.

According to the present invention, in a liquefied gas carrier, it is possible to propose a structure in which the cargo equipment room is arranged in a position suitable for the transfer of vaporized gas serving as fuel to the engine room, and at the same time, the arrangement area of the cargo equipment room is sufficiently secured.

1 is a side view showing the overall configuration of a liquefied gas carrier according to an embodiment of the present invention.
Figure 2 is an enlarged view of the aft compartment of a liquefied gas carrier.
Figure 3 is an enlarged view of the stern section of a liquefied gas carrier according to Modification 1.
Figure 4 is an enlarged view of the bow compartment of a liquefied gas carrier according to Modification 2.
Figure 5 is an enlarged view of the stern section of a liquefied gas carrier according to Modification 3.

Next, embodiments of the present invention will be described with reference to the drawings. Figure 1 is a schematic configuration diagram of a liquefied gas carrier 1 according to an embodiment of the present invention. The liquefied gas carrier 1 shown in FIG. 1 is a liquefied hydrogen carrier that transports liquefied hydrogen. However, the liquefied gas carrier 1 may be a ship that transports liquefied gas such as LNG or LPG. The liquefied gas carrier 1 has a hull 2 composed of a bottom, side walls, and upper deck 18. A propeller 28 and a rudder 29 are arranged at the stern of the hull 2. The hull 2 is defined with a bow section (R1), a cargo section (R2), and a stern section (R3) arranged in the direction from the bow to the captain.

The cargo compartment R2 is divided by a bulkhead 22 into a plurality of holds 21 lined up in the direction of the captain. The section in the direction of the captain from the horizontal bulkhead (22) forming the front wall of the hold (21) closest to the bow to the horizontal bulkhead (22) forming the rear wall of the hold (21) closest to the stern is cargo. It is called compartment (R2). The bow side (i.e., forward side) of the hull 2 rather than the cargo section R2 is designated as the bow section (R1). The stern side (i.e., the rear side) of the hull 2 rather than the cargo section R2 is designated as the stern section (R3).

In each hold 21, a cargo tank 3 is disposed. The lower part of the cargo tank (3) is accommodated in the hold (21). Since the liquefied gas carrier 1 according to this embodiment is a liquefied hydrogen carrier, the cargo tank 3 is a liquefied hydrogen tank for transporting liquefied hydrogen. The liquefied gas carrier 1 according to this embodiment is equipped with four cargo tanks 3. However, the number of cargo tanks 3 mounted on the hull 2 may be one, or may be two or more.

Figure 2 is an enlarged view of the stern section R3 of the liquefied gas carrier 1. As shown in FIGS. 1 and 2, an engine room 35 is installed inside the hull 2 in the stern compartment R3. A part of the engine room 35 may protrude upward from the upper deck 18. In the engine room 35, machinery such as a main engine 34, a generator, and a boiler are installed. The main engine 34 is connected to the propeller 28 disposed at the stern of the hull 2 by a propulsion shaft.

The stern superstructure 15 is disposed on the upper deck 18 of the stern section R3. The stern superstructure 15 is located immediately on the stern side of the cargo compartment R2, and part or all of the stern superstructure 15 is arranged to overlap the engine room 35 when viewed in plan. The stern superstructure 15 includes an upper deck floor 71 (referred to as the first upper deck floor) at substantially the same floor level as the upper deck 18, and an upper deck floor 72 (referred to as the first upper deck floor) above the upper deck floor 71. (referred to as the upper floor).

The hierarchy of the upper floor 72 may be singular or plural. The upper floor 72 is a cargo equipment room 14. Cargo equipment is placed in the cargo equipment room 14. Cargo equipment includes, for example, cargo pumps, cargo compressors, cargo heaters, vaporizers, etc.

On the upper deck floor 71, sufficiently large openings 67 (referred to as first openings) that are always open are provided on both sides of the port side and the starboard side. For example, the upper deck floor 71 may be a space without walls on the port side and starboard side, and may be a space partitioned by walls on the stern side and the bow side. In addition, for example, the stern superstructure 15 is a solid-type structure, and the upper deck 18 and the upper floor 72 are spaced apart by pillars, and the upper deck 18 and the upper floor 72 are separated from each other by pillars. ) may be the upper deck floor 71. In this way, part or all of the stern superstructure 15 has a fatigue structure.

An air gap is provided between the top and bottom of the engine room 35 and the cargo equipment room 14 by the upper deck floor 71 that exists between the top and bottom of the engine room 35 and the cargo equipment room 14. Accordingly, gas leaked from the cargo equipment room 14 can be prevented from entering the engine room 35. Additionally, it is possible to reduce the propagation of vibration and noise from cargo equipment to the engine room 35 side.

A part of the communication passage 76 leading to the engine room 35 is disposed on the upper deck floor 71. In an example of the communication passage 76 shown in FIG. 2, the entrance of the communication passage 76 is on the upper deck 18 and is disposed on the stern side of the stern superstructure 15, and the communication passage 76 is located from the entrance. It has a first part extending toward the bow side on the upper deck floor 71, and a second part extending downward from the upper deck 18 from an end of the first part. So that the inside of the communication passage 76 is not exposed to the upper deck floor 71, the first part of the communication passage 76 that passes through the upper deck floor 71 is closed, for example, in a cylindrical shape. It is formed. The second part of the communication passage 76 is located within the engine room 35 and is not enclosed. The interior of this communication passage 76 is in communication with the engine room 35, and can be regarded as an extension of the engine room 35. However, the end of the second portion of the communication passage 76 serves as a connection port between the communication passage 76 and the actual engine room 35. The shape of the communication passage 76 is not limited to the example shown in FIG. 2, and the entrance on the upper deck 18 of the communication passage 76 is arranged on the bow side, starboard side, or port side than the upper deck floor 71. It's okay to have it. As described above, the communication passage 76 passes through the upper deck floor 71, so that the connection port between the communication passage 76 and the actual engine room 35 is connected to the cargo equipment room 14 arranged in the stern superstructure 15. It can be installed downward. The bow side portion of the engine room (35) is located below the cargo equipment room (14). The bow side part of the engine room 35 is the part of the engine room 35 that becomes the crew's work space, and the crew's movement line can be optimized by making the connection between the communication passage 76 and the actual engine room 35 close to this work space. there is.

The upper deck floor 71 can be used as a space where devices that can be exposed to the outside are placed. In the example shown in FIG. 1, the mooring machine 49 is disposed at approximately the center of the upper deck floor 71 in the ship width direction. The mooring machine 49 is equipped with a mooring line, a drum for winding the mooring line, and a winch capable of winding and pulling out the mooring line. The mooring line pulled out from the mooring machine 49 can be pulled out to the starboard side or port side of the ship through the opening 67 of the upper deck floor 71. In this way, since the mooring line can be pulled out from the mooring device 49 on either the port or starboard side, there is no need to install the mooring device 49 on both sides of the port side and starboard side of the ship. However, the mooring machine 49 is disposed on one of the port and starboard sides of the hull outside the upper deck floor 71, and the opening of the upper deck floor 71 ( The mooring line may be pulled out through 67).

On the upper deck 18 of the stern section R3, and on the stern side of the stern superstructure 15, an accommodation 16 (i.e., a second accommodation compartment) is arranged. The accommodation compartment 16 is arranged at a horizontal position away from the cargo equipment room 14, so that a horizontal gap is formed between the accommodation compartment 16 and the cargo equipment compartment 14. Preferably, the accommodation 16 is arranged within the upper and lower height levels of the upper deck floor 71 of the stern superstructure 15. Accordingly, the accommodation compartment 16 is disposed at a position away from the cargo equipment room 14 in the horizontal and vertical directions, thereby forming a horizontal and vertical gap between the accommodation compartment 16 and the cargo equipment compartment 14. .

The living quarters (16) partially or fully overlap with the engine room (35) when viewed from the top. The entrance and exit of the accommodation compartment 16 is arranged horizontally away from the cargo equipment room 14. For example, when the entrance of the accommodation compartment 16 opens toward the bow side, the entrance of the accommodation compartment 16 is arranged at a predetermined distance away from the upper deck floor 71 in the captain's direction. Moreover, for example, the entrance of the accommodation 16 may be opened toward the starboard side or the port side at a predetermined distance away from the upper deck floor 71 in the captain's direction. The entrance of the communication passage 76 is preferably installed near the entrance of the living quarters 16. In this case, the crew can move from the accommodation 16 to the engine room 35 (or vice versa) via the communication passage 76. Examples of the space included in the residential area 16 (i.e., the second residential area) include a restroom, washroom, lounge, shower room, changing room, duty room, and locker. The living quarters 16 may be used as a living space for crew members working in the engine room 35.

An engine casing 36 is disposed on the upper deck 18 of the stern section R3 and on the stern side of the stern superstructure 15. The engine casing 36 covers the exhaust pipe of the boiler or main engine 34 disposed up to the upper part of the engine room 35, and a chimney 48 connected to this exhaust pipe protrudes from the top of the engine casing 36. The engine casing (36) is preferably disposed on the stern side rather than the accommodation (16). Accordingly, a horizontal gap is formed between the housing 16 and the engine casing 36. However, as shown in FIG. 3, the accommodation 16 and the engine casing 36 may be arranged to overlap in the captain's direction. In this case, it is preferable that the housing 16 is disposed away from the engine casing 36 so that an air gap in the width direction exists between the housing 16 and the engine casing 36. However, the engine casing 36 and the living quarters 16 may be adjacent to each other.

Returning to Figure 1, the bow superstructure 12 is disposed on the upper deck 18 of the bow compartment R1. A portion of the bow superstructure 12 may protrude downward from the upper deck 18. The bow superstructure 12 includes an upper deck floor 73 (referred to as the second upper deck floor) at substantially the same floor level as the upper deck 18, and an upper deck floor 74 (referred to as the second upper deck floor) above the upper deck floor 73. (referred to as the upper floor).

The hierarchy of the upper floor 74 may be singular or plural. In the liquefied gas carrier 1 shown in FIG. 1, the upper floor 74 has a plurality of layers, and the uppermost floor is the bridge 13. The bridge (13) refers to a place for navigation and shipbuilding, and includes the wheelhouse (11) and the bridge wing. In addition to the bridge 13, the bow superstructure 12 is provided with a bow function section 20 arranged below the bridge 13. The bow function compartment 20 is provided with at least one of a first accommodation compartment, an equipment room for arranging equipment related to safe navigation, a warehouse for storing navigation equipment, a cable wiring compartment, a battery room, a passage, and stairs. Examples of spaces included in the first living quarters include a restroom, washroom, pilot waiting room, duty room, and duty pantry. Additionally, the first living quarters may be provided with a vacant room, a living room, an office, a hospital room, a wiring room, a galley for providing meal time to the crew, a dining room, etc. Equipment placed in the equipment room include navigational equipment such as a gyrocompass and VDR (navigational information recording device), the control unit of an automatic attendant telephone, the control unit of the ship's broadcasting system, the antenna ground switching unit of the MF/HF transceiver, and the radar. A transceiver is illustrated.

The upper deck floor 73 of the bow superstructure 12 is provided with sufficiently large openings 66 (second openings) that are always open on both sides of the port and starboard sides. For example, the upper deck floor 73 may be a space without walls on the port side and starboard side, and may be a space partitioned by walls on the stern side and the bow side. In addition, for example, the bow superstructure 12 is a solid-type structure, and the upper deck 18 and the upper floor 74 are spaced apart by pillars, and the space between the upper deck 18 and the upper floor 74 is the upper deck floor. (73) may also be used. In this way, part or all of the bow superstructure 12 has a fatigue structure. The upper deck floor 73 can be used as a space where equipment or tanks that can be exposed to the outside are placed. For example, like the upper deck floor 71 of the stern superstructure 15, the mooring machine 46 may be disposed on the upper deck floor 71 of the bow superstructure 12.

In addition, as shown in FIG. 4, in addition to the upper deck floor 71 on the bow superstructure 12, or instead of the upper deck floor 71, a continuous structure in the width direction is provided on the roof or side of the bow superstructure 12. Thus, the exposed auxiliary deck 75 may be installed. A mooring machine 46 may be placed on this auxiliary deck 75. As shown in FIG. 5, an auxiliary deck 78 similar to this auxiliary deck 75 may be installed on the stern superstructure 15, and a mooring 79 may be arranged on the auxiliary deck 78. In this case, the mooring devices 49 on the upper deck floor 71 may be omitted, and the mooring devices 49 and 79 may be disposed on both the auxiliary deck 78 and the upper deck floor 71.

<General>

As described above, the liquefied gas carrier 1 according to this embodiment has a hull 2 defined by a bow section (R1), a cargo section (R2), and a stern section (R3) arranged in the direction from the bow to the captain. and an engine room 35 disposed below the upper deck 18 in the stern section R3 of the hull 2, and disposed above the engine room 35 in the stern section R3 of the hull 2, in the shipwidth direction. a first upper deck floor 71 having first openings 67 on at least a portion of both sides and having a floor level substantially the same as that of the upper deck 18, and a first upper deck floor above the first upper deck floor 71. (72) and a stern superstructure (15) with a cargo equipment room (14) arranged on the first upper floor (72).

In the liquefied gas carrier 1 of the above configuration, the cargo equipment room 14 is located on the stern side of the cargo compartment R2, so compared to the case where the cargo equipment room 14 is arranged between the cargo tanks 3, It is possible to sufficiently secure the placement area of the cargo equipment room 14. Additionally, in the liquefied gas carrier (1), an air gap is provided between the upper and lower sides of the engine room (35) and the cargo equipment room (14) by the upper deck floor (71), so that gas leaking from the cargo equipment room (14) enters the engine room (35). Intrusion can be prevented, and the cargo equipment room 14 can be placed above the engine room 35. The cargo equipment room 14 disposed above the engine room 35 is suitable for transferring vaporized gas serving as fuel to the engine room 35. Furthermore, the upper deck floor 71 can reduce the propagation of vibration and noise from cargo equipment placed in the cargo equipment room 14 to the engine room 35 side. Furthermore, since the upper deck floor 71 is a space installed on the upper deck 18 and is in communication with the outside of the stern superstructure 15 through the first opening 67, the upper deck floor 71 can be exposed to the outside. It can be used as a space where equipment, tanks, etc. are placed. Therefore, compared to the case where an air gap is provided below the upper deck 18 between the engine room 35 and the cargo equipment room 14, the space utilization of the air gap is expanded.

As in the present invention, the liquefied gas carrier (1) is disposed on the first upper deck floor (71) of the stern superstructure (15), and mooring lines are fed out on both sides of the ship width direction through the first opening (67). ) A possible first mooring device 49 may be further provided.

In conventional ships, mooring machines are arranged on both left and right sides, but the large number of mooring machines causes an increase in the cost of not only the mooring machine itself, but also hydraulic piping if the driving method is hydraulic, and electric wires if the driving method is electric. On the other hand, in the liquefied gas carrier 1, a mooring machine 49 capable of pulling out mooring lines in both the port and starboard directions is arranged on the upper deck floor 71, so that the cost of the mooring machine main body, hydraulic pipes, and electric wires is reduced. can be reduced.

In addition, as in the present invention, in the liquefied gas carrier (1), a communication passage (76) connected to the engine room (35) may be disposed on the first upper deck floor (71). The communication passage 76 may be closed on the first upper deck floor 71.

In this way, the communication passage 76 to the engine room 35 is arranged on the first upper deck floor 71, so that crew members can access the engine room 35 from above the upper deck 18 through the communication passage 76 (or vice versa). You can move. Moreover, by arranging the communication passage 76 on the first upper deck floor 71, it becomes possible to arrange the connection port between the communication passage 76 and the actual engine room 35 below the cargo equipment room 14. The bow side part of the engine room 35 corresponding to the lower part of the cargo equipment room 14 is the part of the engine room 35 that becomes the crew's work space, and the connection between the communication passage 76 and the engine room 35 is connected to this work space. By keeping them close together, the crew's movement path can be optimized.

In addition, as in the present invention, the liquefied gas carrier 1 has an engine casing 36 disposed away from the stern superstructure 15 toward the stern in the stern section R3 of the hull 2, and a stern superstructure 15. ) is provided with a living quarters (16) arranged away from the stern side. However, the liquefied gas carrier 1 may be provided with at least one of the engine casing 36 and the accommodation 16. In the case where both the engine casing 36 and the accommodation 16 are provided, for example, the accommodation 16 is located between the stern superstructure 15 and the engine casing 36. It may be arranged to be spaced apart from the casing 36 in the horizontal direction.

In this way, the accommodation 16 is arranged at a position away from the cargo equipment room 14 in the horizontal direction (i.e., in the captain's direction) toward the stern, thereby preventing gas leaks from the cargo equipment room 14 from entering the accommodation 16. It can be prevented. In addition, by arranging the engine casing 36 at a position away from the cargo equipment room 14 toward the stern in the horizontal direction (i.e., in the captain's direction), leaking gas from the cargo equipment room 14 is prevented from infiltrating the engine casing 36. It can be prevented. Furthermore, the living quarters 16 can be used as a living space for crew members working in the engine room 35 located below the stern superstructure 15. Therefore, it is possible to reduce the propagation of vibration and noise from cargo equipment placed in the cargo equipment room 14 to the accommodation area 16 side.

In addition, as in the present invention, the accommodation 16 may be arranged within the upper and lower height levels of the first upper deck floor 71 of the stern superstructure 15.

In this way, by arranging the accommodation compartment 16 at a position away from the cargo equipment room 14 in the vertical and horizontal directions, it is possible to prevent gas leaking from the cargo equipment compartment 14 from entering the accommodation compartment 16.

In addition, as in the present invention, the liquefied gas carrier 1 is disposed on the upper deck 18 of the bow section R1 of the hull 2, and has a second opening 66 in at least a portion of both sides in the ship width direction. A bow superstructure (12) provided with a second upper deck floor (73) at substantially the same floor level as the upper deck (18) and a second upper deck floor (74) above the second upper deck floor (73), A second mooring device 46 may be further provided, which is disposed on the second upper deck floor 73 of the bow superstructure 12 and is capable of feeding the mooring line to both sides of the ship width direction through the second opening 66. .

In the liquefied gas carrier 1, a mooring machine 46 capable of withdrawing mooring lines in both port and starboard directions is arranged on the upper deck floor 73 of the bow superstructure 12, so the mooring machine 46 is installed on the port side. There is no need to install it on both the side and starboard sides, and the cost of the mooring main body and hydraulic piping can be reduced.

Alternatively, as in the present invention, the liquefied gas transport ship 1 is disposed on the upper deck 18 of the bow compartment R1 of the hull 2, and has an auxiliary deck 75 continuous in the width direction on the roof or side. The bow superstructure 12 provided may further include a second mooring device 46 disposed on the auxiliary deck 75.

In the liquefied gas carrier 1, a mooring machine 46 capable of withdrawing mooring lines in both the port and starboard directions is arranged on the auxiliary deck 75 of the bow superstructure 12, so the mooring machine 46 is There is no need to install it on both the port and starboard sides, and the cost of the mooring main body and hydraulic piping can be reduced.

In addition, as in the present invention, in the liquefied gas carrier 1, the stern superstructure 15 is provided with an auxiliary deck 78 continuous in the width direction on the roof or side, and the auxiliary deck 78 is disposed on the auxiliary deck 78. 3 An additional mooring device 79 may be provided.

In the liquefied gas carrier 1, a mooring machine 79 capable of withdrawing mooring lines in both the port and starboard directions is arranged on the auxiliary deck 78 of the stern superstructure 15, so the mooring machine 79 There is no need to install the port and starboard sides, and the cost of the mooring body and hydraulic piping can be reduced.

The above disclosure has been presented for purposes of illustration and description, and is not intended to limit the invention to the form disclosed herein. For example, in the foregoing detailed description, various features of the invention have been summarized in one embodiment for the purpose of streamlining the invention. However, multiple features included in the present invention may be combined into other embodiments, configurations, or forms than those discussed above.

Claims (8)

a hull with defined bow compartments, cargo compartments and stern compartments arranged from the bow toward the captain;
an engine room disposed below the upper deck in the aft section of the hull;
A first upper deck floor disposed above the engine room in the stern section of the hull, having a first opening in at least a portion of both sides in the ship width direction, and having a floor level substantially the same as the upper deck, and lower than the first upper deck floor. A liquefied gas carrier comprising an upper first upper floor and a stern superstructure in which a cargo equipment room is located on the first upper floor.
According to paragraph 1,
A liquefied gas carrier further comprising a first mooring device disposed on the first upper deck floor of the stern superstructure and capable of feeding mooring lines to both sides of the ship width direction through the first opening.
According to claim 1 or 2,
A liquefied gas carrier, characterized in that a communication passage connected to the engine room is arranged on the first upper deck floor.
According to any one of claims 1 to 3,
Characterized by further comprising at least one of an engine casing disposed in the stern section of the hull and away from the stern side of the stern superstructure, and an accommodation space disposed in the stern section of the hull toward the stern side away from the stern superstructure. A liquefied gas carrier.
According to clause 4,
A liquefied gas carrier, characterized in that the accommodation is arranged within the upper and lower height levels of the first upper deck floor of the stern superstructure.
According to any one of claims 1 to 5,
A second upper deck floor disposed above the upper deck of the bow section of the hull, having second openings in at least a portion of both sides in the ship width direction, and having a floor level substantially the same as the upper deck, and the second upper deck floor a bow superstructure having a second, upper upper floor;
A liquefied gas carrier further comprising a second mooring device disposed on the second upper deck floor of the bow superstructure and capable of feeding mooring lines to both sides of the ship width direction through the second opening.
According to any one of claims 1 to 5,
A bow superstructure disposed on the upper deck of the bow section of the hull and having an auxiliary deck continuous in the width direction on the roof or side,
A liquefied gas carrier further comprising a second mooring device disposed on the auxiliary deck.
According to any one of claims 1 to 7,
The stern superstructure has an auxiliary deck continuous in the width direction on the roof or side,
A liquefied gas carrier further comprising a third mooring device disposed on the auxiliary deck.

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