Liquefied gas carrying vessel

Abstract

This liquefied gas carrying vessel comprises: a liquefied gas storage tank that stores a liquefied gas; an engine room that has liquefied gas consumption equipment disposed therein to which the gas is supplied from the liquefied gas storage tank through piping, and an opening / closing door for entering and exiting the engine room; a gas adjustment room that has gas adjustment equipment disposed therein for adjusting the gas to be supplied from the liquefied gas storage tank to the liquefied gas consumption equipment through the piping, and an opening / closing door for entering and exiting the gas adjustment room; and an access passage from the engine room to the gas adjustment room, the access passage extending from the opening / closing door of the engine room to the opening / closing door of the gas adjustment room.

Description

Liquefied gas carrier

[0001] The present disclosure relates to a liquefied gas carrier.

[0002] In a liquefied gas carrier, when supplying gas such as boil-off gas from a liquefied gas storage tank to a propulsion engine in an engine room etc. through a pipe as fuel, the supply amount of the gas etc. is adjusted by a gas regulating valve. The gas regulating chamber where the gas regulating valve is disposed is known to be disposed inside the engine room. Patent Document 1 discloses a ship provided with a valve chamber in which a pressure regulating valve is accommodated inside the engine room. A liquefied gas carrier may be separately provided with an engine room to which gas including boil-off gas is supplied from a liquefied gas storage tank through a pipe, and a gas regulating chamber in which a gas regulating valve for regulating the gas supplied to the engine room is disposed.

[0003] Japanese Unexamined Patent Application Publication No. 2023-160949

[0004] In a liquefied gas carrier, when the gas regulating chamber is disposed adjacent to the engine room, an opening / closing door directly connecting the engine room and the gas regulating chamber may be provided for an operator to directly move from the engine room to the gas regulating chamber.

[0005] When an opening / closing door directly connecting the engine room and the gas regulating chamber is provided, if gas leaks from a pipe or a valve etc. in the gas regulating chamber, there is a risk that the gas leaked in the gas regulating chamber will enter the engine room when the opening / closing door is opened.

[0006] An object of the present disclosure is to provide a liquefied gas carrier capable of suppressing gas from entering the engine room and improving safety even if gas leaks in the gas regulating chamber.

[0007] This disclosure provides a liquefied gas carrier comprising: a liquefied gas storage tank for storing liquefied gas; an engine room where liquefied gas consuming equipment is located, and which is supplied with gas from the liquefied gas storage tank through piping; an engine room having an opening and closing door for access to and from the outside; a gas adjustment room where gas adjustment equipment is located, which is configured to adjust the gas supplied from the liquefied gas storage tank to the liquefied gas consuming equipment through the piping; and an access passage from the engine room to the gas adjustment room extending from the opening and closing door of the engine room to the opening and closing door of the gas adjustment room.

[0008] According to this disclosure, in a liquefied gas carrier in which gas, including boil-off gas from a liquefied gas storage tank, is supplied to the engine room through piping, the engine room where liquefied gas consumption equipment is located and the gas adjustment room where gas adjustment equipment is located each have opening and closing doors that allow access to and from the outside, and the access passage from the engine room to the gas adjustment room extends from the opening and closing door of the engine room to the opening and closing door of the gas adjustment room. When a worker moves along the access passage between the engine room and the gas adjustment room for maintenance or other purposes, the worker will be outside the ship while passing through the opening and closing door of the engine room, which is a safety area, and the opening and closing door of the gas adjustment room, which is a hazard area. Therefore, even if gas leaks in the gas adjustment room, the gas can be discharged outside the ship through the opening and closing door of the gas adjustment room and released into the atmosphere, thereby preventing the gas from entering the engine room and improving safety.

[0009] Figure 1 is a side view of a liquefied gas carrier according to an embodiment of the present disclosure. Figure 2 is a stern side view of the liquefied gas carrier. Figure 3 is a stern plan view of the liquefied gas carrier. Figure 4 is a stern cross-sectional view of the liquefied gas carrier. Figure 5 is a diagram showing piping for supplying boil-off gas from a liquefied gas storage tank to a boiler. Figure 6 is a plan view showing the engine room and gas adjustment room. Figure 7 is a rear view showing the engine room and gas adjustment room.

[0010] The embodiments of this disclosure will be described below with reference to the attached drawings.

[0011] Figure 1 is a side view of a liquefied gas carrier according to an embodiment of the present disclosure. The liquefied gas carrier according to an embodiment of the present disclosure is a liquefied hydrogen carrier for transporting liquefied hydrogen. The liquefied gas carrier may also be a liquefied gas carrier for transporting liquefied gases such as liquefied natural gas or liquefied ammonium.

[0012] The liquefied gas carrier 1 shown in Figure 1 has a hull 2 ​​composed of a bottom, side walls, and a deck floor. The hull 2 ​​is provided with a cargo space 4 in which multiple liquefied gas storage tanks 3 are arranged in the longitudinal direction from the bow to the stern, i.e., from the forward side to the aft side. The stern side of the hull 2 ​​is provided with an engine room 5, a gas adjustment room 6, and a cargo equipment room 13.

[0013] In the cargo space 4 located on the front-to-rear center of the hull 2, multiple spherical independent tanks, specifically four liquefied gas storage tanks 3, are arranged. In the liquefied hydrogen carrier 1, the liquefied gas storage tanks 3 are liquefied hydrogen storage tanks 3 for storing liquefied hydrogen.

[0014] The cargo space 4 is partitioned in the longitudinal direction of the hull 2 ​​by a first bulkhead 4a that forms the forward wall at the bow and a second bulkhead 4b that forms the aft wall at the stern. The liquefied gas storage tanks 3 are not limited to four, but may be one, two, or more.

[0015] Figure 2 is a side view of the stern of the liquefied gas carrier. Figure 3 is a top view of the stern of the liquefied gas carrier. As shown in Figure 2, the engine room 5 houses the main engine 8, boiler 9, etc. A propulsion steam turbine 8 is used as the main engine 8. The steam turbine 8 is connected to a propeller 10 located at the stern of the hull 2. The steam turbine 8 uses steam to rotate the propeller 10. Other propulsion engines, such as a reciprocating engine, can also be used as the main engine.

[0016] The liquefied gas carrier 1 is equipped with a liquefied gas consumption device that receives gas containing boil-off gas from a liquefied gas storage tank 3 through piping 20. In this embodiment, the liquefied gas consumption device is a boiler 9. The boiler 9 generates steam to be supplied to a steam turbine 8. As shown in Figure 3, boil-off gas of liquefied hydrogen stored in the liquefied gas storage tank 3 as liquefied gas is supplied to the boiler 9 in a compressed state through piping 20, and the boiler 9 generates steam by burning the boil-off gas. The boiler 9 supplies the generated steam to the steam turbine 8. The steam from the boiler 9 may also be supplied to a steam turbine for power generation, etc. In the liquefied hydrogen carrier 1, the liquefied gas consumption device 9 is a hydrogen consumption device that consumes hydrogen gas.

[0017] Boiler 9 is also supplied with fuel such as heavy oil. Boiler 9 also generates steam by burning fuel such as heavy oil. In the liquefied gas carrier 1, steam can be generated using both boil-off gas of liquefied hydrogen and fuel such as heavy oil. Even if the liquefied gas carrier 1 cannot operate using only boil-off gas of liquefied hydrogen during its voyage, it can operate using fuel such as heavy oil.

[0018] Figure 4 is a cross-sectional view of the stern side of the liquefied gas carrier, and is a cross-sectional view of the liquefied gas carrier along the line Y4-Y4 in Figure 3. As shown in Figure 4, the stern side of the hull 2 ​​includes a deck floor 16, which is the uppermost upper deck floor of the hull 2; an upper floor 17 above the deck floor 16; a first lower floor 18 below the deck floor 16; and a second lower floor 19 below the first lower floor 18.

[0019] The engine room 5 is comprised of multiple floors spanning the deck floor 16, the upper floor 17, the first lower floor 18, and the second lower floor 19. The steam turbine 8 is located on the second lower floor 19. The boiler 9 is located across the first lower floor 18 and the deck floor 16. The engine room 5 also houses other equipment, such as a steam turbine for power generation.

[0020] Figure 5 shows the piping that supplies boil-off gas from the liquefied gas storage tank to the boiler. In the liquefied gas carrier 1, hydrogen gas, which is boil-off gas generated in the liquefied gas storage tank 3, is pumped to the boiler 9 and used for propulsion combustion, etc.

[0021] As shown in Figure 5, in the piping 20 connecting the liquefied gas storage tank 3 and the boiler 9, a compressor 11 is located on the liquefied gas storage tank side, and a gas control valve 14 is located on the boiler side of the compressor 11 as a gas control device to adjust the gas supplied from the liquefied gas storage tank 3 to the boiler 9.

[0022] The compressor 11 compresses the gas containing boil-off gas from the liquefied gas storage tank 3. For example, a centrifugal or reciprocating compressor can be used as the compressor 11. The compressor 11 is located in the cargo equipment room 13 where the cargo equipment is housed. As shown in Figure 2, the cargo equipment room 13 is located above the forward portion of the engine room 5, on the stern side of the liquefied gas storage tank 3 in the longitudinal direction of the hull 2. As shown in Figure 2, the cargo equipment room 13 is located on the deck floor 16 and the upper floor 12. The cargo equipment room 13 may also be located in other parts, such as between the liquefied gas storage tanks 3.

[0023] In the liquefied gas carrier 1, a propulsion steam turbine 8 is installed as the propulsion system. As shown in Figure 4, two propulsion steam turbines 8, a first propulsion steam turbine 8a and a second propulsion steam turbine 8b, are arranged in series in the engine room 5. The first propulsion steam turbine 8a is a high-pressure turbine and is driven to rotation by steam from the boiler 9. The second propulsion steam turbine 8b is a low-pressure turbine and is driven to rotation by steam from the high-pressure turbine. The propulsion steam turbine 8 is equipped with two steam turbines 8a and 8b, but it may consist of one or more steam turbines.

[0024] The engine room 5 is equipped with two boilers 9, a first boiler 9a and a second boiler 9b, which supply steam to the propulsion steam turbine 8. Steam is supplied to the propulsion steam turbine 8 by the two boilers 9. Having two boilers 9 allows the ship to operate even if one boiler 9 is not operational, by operating the other boiler 9.

[0025] As shown in Figure 5, the piping 20 includes a first pipe 21 connecting the liquefied gas storage tank 3 and the first boiler 9a, and a second pipe 22 connecting the liquefied gas storage tank 3 and the second boiler 9b. The first pipe 21 and the second pipe 22 branch off from the liquefied gas storage tank 3 at a branching section 20a downstream of the compressor 11, and are common piping from the liquefied gas storage tank 3 to the branching section 20a.

[0026] The first pipe 21 is connected to the liquefied gas storage tank 3 and also to the compressor 11 in the cargo equipment room 13, and branches off from the second pipe 22 downstream of the compressor 11.

[0027] As shown in Figure 3, the first pipe 21 extends from the cargo equipment room 13 towards the stern along the port side of the engine room 5, then extends to the starboard side along the stern of the engine room 5, and into the gas adjustment room 6. The second pipe 22 extends from the cargo equipment room 13 towards the stern along the port side of the engine room 5, then extends to the starboard side along the stern of the engine room 5, and into the gas adjustment room 6.

[0028] Figure 6 is a plan view showing the engine room and gas control room. Figure 7 is a rear view showing the engine room and gas control room. As shown in Figure 6, the gas control room 6 has a first gas control room 6a where the first pipe 21 and the gas control valve 14a for the first pipe are located, and a second gas control room 6b where the second pipe 22 and the gas control valve 14b for the second pipe are located. The first gas control room 6a and the second gas control room 6b are separated by a partition wall 6c. The gas control rooms 6a and 6b are each ventilated using fans (not shown).

[0029] The first piping 21 is connected to the first boiler 9a in the engine room 5 through the gas adjustment chamber 6a. The first piping 21 is formed as a single pipe within the gas adjustment chamber 6a, as shown in piping 21a, and as a double pipe within the engine room 5, as shown in piping 21b. The first piping 21 is also formed as a single pipe from the gas adjustment chamber 6 to the liquefied gas storage tank 3. Piping 21b has an inner pipe and an outer pipe of double piping, with the inner pipe connected to piping 21a.

[0030] The second pipe 22 is connected to the second boiler 9b in the engine room 5 through the gas adjustment chamber 6b. The second pipe 22 is formed as a single pipe in the gas adjustment chamber 6b, as shown in pipe 22a, and as a double pipe in the engine room 5, as shown in pipe 22b. The second pipe 22 is also formed as a single pipe from the gas adjustment chamber 6 to the liquefied gas storage tank 3. Pipe 22b has an inner pipe and an outer pipe of a double pipe, and the inner pipe is connected to pipe 22a.

[0031] A gas control valve 14 is provided in the vicinity of the engine room 5 in both the first piping 21 and the second piping 22. The first piping 21 is provided with a first gas control valve 14a for adjusting the gas supplied to the first boiler 9a. The second piping 22 is provided with a second gas control valve 14b for adjusting the gas supplied to the second boiler 9b. A gas control valve 14 that adjusts the amount of gas supplied is used. Alternatively, a gas control valve 14 that adjusts the gas supply pressure may be used, or a gas control valve that adjusts both the gas supply pressure and the amount of gas supplied may be used.

[0032] As shown in Figure 5, the first pipe 21 and the second pipe 22 are equipped with emergency shut-off valves 15 located downstream from the branching section 20a in the direction from the liquefied gas storage tank 3 towards the boiler 9, which stop the flow of gas through the first pipe 21 and the second pipe 22. The first emergency shut-off valve 15a is located in the first pipe 21, and the second emergency shut-off valve 15b is located in the second pipe 22. The emergency shut-off valves 15 are activated when a gas leak is detected in the gas adjustment chamber 6, for example.

[0033] As shown in Figure 7, the gas adjustment rooms 6 are located on the deck floor 16. The first gas adjustment room 6a and the second gas adjustment room 6b are located adjacent to each other in the width direction of the ship. The engine room 5 is located adjacent to the forward side of the gas adjustment rooms 6, as shown in Figure 6. The engine room 5 is located on multiple floors, including the deck floor 16.

[0034] In the liquefied gas carrier 1, the gas adjustment room 6 has an opening / closing door 31 that allows access to and from the outside 30. The opening / closing door 31 is located on the stern side of the gas adjustment room 6, opposite to the engine room 5. The first gas adjustment room 6a and the second gas adjustment room 6b are each provided with opening / closing doors 31a and 31b, respectively, that allow access to and from the outside 30. The opening / closing door 31 that allows access to and from the gas adjustment room 6 and the outside 30 may be located on the side of the gas adjustment room 6, or on the bow side of the gas adjustment room 6 if the engine room 5 and the gas adjustment room 6 are spaced apart in the longitudinal direction of the hull 2. The gas adjustment room 6 may be provided with multiple opening / closing doors 31.

[0035] The engine room 5 has an opening / closing door 32 that allows access to and from the outside 30 of the ship. The engine room 5 has an opening / closing door 32 on the stern side of the deck floor 16, which is on the same floor as the gas adjustment room 6. The opening / closing door 32 may also be located on the bow side or the side of the engine room 5. The engine room 5 may have multiple opening / closing doors 32. The opening / closing doors 32 of the engine room 5 are positioned so as not to be located within a radius of 4.5 m from the opening / closing door 31 of the gas adjustment room 6.

[0036] In the liquefied gas carrier 1, the engine room 5 and the gas adjustment room 6 are located adjacent to each other in the longitudinal direction of the hull 2. The engine room 5 and the gas adjustment room 6 each have opening and closing doors 32 and 31 on the deck floor 16 that allow access to and from the outside 30, but as shown in Figure 6, the bulkhead 34 separating the engine room 5 and the gas adjustment room 6 does not have an opening and closing door that directly connects the engine room 5 and the gas adjustment room 6. The engine room 5 and the gas adjustment room 6 may be located at a distance from each other.

[0037] The liquefied gas carrier 1 is equipped with an access passage 33 from the engine room 5 to the gas adjustment room 6, extending from the opening / closing door 32 of the engine room 5 to the opening / closing door 31 of the gas adjustment room 6. When workers move from the engine room 5 to the gas adjustment room 6 or from the gas adjustment room 6 to the engine room 5 for maintenance or other purposes, the workers move between the engine room 5 and the gas adjustment room 6 along the access passage 33. When workers move between the engine room 5 and the gas adjustment room 6 along the access passage 33, they will be outside the ship, in the area outside the room 30, while passing through the opening / closing door 32 of the engine room 5, which is a safety area, and the opening / closing door 31 of the gas adjustment room 6, which is a hazard area.

[0038] As a result, even if gas leaks inside the gas adjustment chamber 6, when an operator moves between the engine room 5 and the gas adjustment chamber 6 along the access passage 33, or when an operator moves between the engine room 5 and the gas adjustment chamber 6 along the access passage 33, the gas will be discharged to the outside 30 through the opening door 31 of the gas adjustment chamber 6, thereby preventing the gas from entering the engine room 5 and improving safety.

[0039] In a liquefied hydrogen carrier 1 that uses liquid hydrogen as the liquefied gas, even if hydrogen gas leaks inside the gas adjustment room 6, the hydrogen gas can be discharged outside the ship (outside room 30) through the opening / closing door 31 of the gas adjustment room 6, thereby preventing the hydrogen gas from entering the engine room 5 and improving safety.

[0040] By placing an airlock space, maintained at a higher pressure than the engine room and gas control room, between the engine room and the gas control room, and providing opening and closing doors between the airlock space and the engine room and gas control room, it is possible to prevent gas from moving into the engine room even if gas leaks in the gas control room. However, this requires providing the airlock space within the limited space of the transport vessel.

[0041] In this embodiment, the machinery space 5 where the liquefied gas-consuming equipment 9 is arranged and the gas regulating room 6 where the gas regulating equipment 14 is arranged each have opening and closing doors 32 and 31 for entering and leaving with the outside 30. Therefore, without providing an airlock space, when an operator moves along the access passage 33 between the machinery space 5 and the gas regulating room 6, the operator will go out to the outside 30 which is outside the ship. So, even if gas leaks in the gas regulating room 6, it is possible to suppress the gas from entering the machinery space 5.

[0042] In the liquefied gas carrier 1, the gas regulating room 6 is arranged on the deck floor 16. However, even when the gas regulating room 6 is arranged on a floor other than the deck floor 16 such as the upper floor 17, the first lower floor 18 or the second lower floor 19, it has an opening and closing door 31 for entering and leaving with the outside 30. The machinery space 5 also has an opening and closing door 32 for entering and leaving with the outside 30.

[0043] In the liquefied gas carrier 1, the machinery space 5 has two liquefied gas-consuming equipment 9, and the gas regulating room 6 has two gas regulating rooms 6 in which gas regulating valves 14 for adjusting the supply of gas including boil-off gas supplied from the liquefied gas storage tank 3 to each of the two liquefied gas-consuming equipment 9 are respectively arranged. Each of the two gas regulating rooms 6 has an opening and closing door 31 for entering and leaving with the outside 30.

[0044] Even when there are two gas regulating rooms 6, each gas regulating room 6 has an opening and closing door 31 for entering and leaving with the outside 30. So, even if gas leaks in the gas regulating room 6, the gas can be discharged from the opening and closing door 31 of the gas regulating room 6 to the outside 30 which is outside the ship and released to the atmosphere, thereby suppressing the gas from entering the machinery space 5.

[0045] Since each of the two gas adjustment chambers 6 has an opening / closing door 31 that allows entry and exit to and from the outside 30, it is possible to improve safety while providing redundancy in the supply of boil-off gas to the liquefied gas consuming equipment 9. When gas leakage is detected in one gas adjustment chamber 6, by closing the emergency shut-off valve 15 provided in the pipe 20 leading to the one gas adjustment chamber 6, boil-off gas from the liquefied gas storage tank 3 can be supplied to the engine room 5 through the pipe 20 leading to the other gas adjustment chamber 6 and burned.

[0046] In the liquefied gas carrier 1, the engine room 5 may have one liquefied gas consuming equipment 9, and the gas adjustment chamber 6 may have one gas adjustment chamber 6 in which gas adjustment equipment 14 for adjusting the supply of gas including boil-off gas supplied from the liquefied gas storage tank 3 to the one liquefied gas consuming equipment 9 is arranged. In the liquefied gas carrier 1, it is preferable that the engine room 5 has a plurality of liquefied gas consuming equipment 9, and the gas adjustment chamber 6 has a plurality of gas adjustment chambers 6 in which gas adjustment equipment 14 for adjusting the supply of gas including boil-off gas supplied from the liquefied gas storage tank 3 to each of the plurality of liquefied gas consuming equipment 9 is arranged respectively. In such a case, each of the plurality of gas adjustment chambers 6 has an opening / closing door 31 that allows entry and exit to and from the outside 30.

[0047] In this embodiment, a boiler 9 is used as the liquefied gas consuming equipment to which boil-off gas is supplied from the liquefied gas storage tank 3 through the pipe 20, but it may be supplied to other liquefied gas consuming equipment such as a gas combustion unit (GCU) or a generator as the liquefied gas consuming equipment. The gas adjustment chamber 6 may be a gas adjustment chamber including a gas valve unit having a gas adjustment valve 14.

[0048] In this embodiment, the liquefied gas carrier 1 is described as a liquefied hydrogen carrier 1 that transports liquefied hydrogen as the liquefied gas, but it may be a liquefied gas carrier that transports liquefied natural gas, liquefied ammonia, etc. as the liquefied gas.

[0049] As described above, the liquefied gas carrier 1 according to this embodiment has opening and closing doors 31 and 32 that allow the engine room 5, where the liquefied gas consumption equipment 9 is located, and the gas adjustment room 6, where the gas adjustment equipment 14 is located, to enter and exit from the outside 30, respectively. The access passage 33 from the engine room 5 to the gas adjustment room 6 extends from the opening and closing door 32 of the engine room 5 to the opening and closing door 31 of the gas adjustment room 6. When a worker moves between the engine room 5 and the gas adjustment room 6 along the access passage 33 for maintenance or the like, the worker will go outside the ship (outside the vessel, 30) while passing through the opening and closing door 32 of the engine room 5, which is a safe area, and the opening and closing door 31 of the gas adjustment room 6, which is a dangerous area. Therefore, even if gas leaks inside the gas adjustment room 6, the gas can be discharged outside 30 through the opening and closing door 31 of the gas adjustment room 6 and released into the atmosphere, thereby preventing the gas from entering the engine room 5 and improving safety.

[0050] Furthermore, the engine room 5 is located adjacent to or at a distance from the gas control room 6, and the gas control room 6 does not have an opening / closing door that directly connects it to the engine room 5. When the engine room 5 is located adjacent to or at a distance from the gas control room 6, the gas control room 6 does not have an opening / closing door that directly connects it to the engine room 5, so even if gas leaks inside the gas control room 6, it is possible to prevent the gas from entering the engine room 5.

[0051] The engine room 5 is located on the bow side of the gas adjustment room 6, and the opening / closing door 31 of the gas adjustment room 6 may be located on the stern side of the gas adjustment room 6. This allows the opening / closing door 31 of the gas adjustment room 6 to be located on the opposite side from the engine room 5, further improving safety.

[0052] The piping 20 in the gas control chamber 6 is a single-walled pipe, while the piping 20 in the engine room 5 may be a double-walled pipe. Since the piping 20 in the gas control chamber 6 is a single-walled pipe, there is a greater risk of gas leakage compared to when the piping is a double-walled pipe. However, even if gas leaks from the piping 20 in the gas control chamber 6, it is possible to prevent the gas from entering the engine room 5.

[0053] The liquefied gas is liquefied hydrogen, and the liquefied gas storage tank 3 can be a liquefied hydrogen storage tank 3. In a liquefied hydrogen carrier 1, where gas containing boil-off gas of liquefied hydrogen is supplied from the liquefied hydrogen storage tank 3 to the engine room 5 through piping 20, even if hydrogen gas leaks in the gas adjustment room 6, it is possible to suppress the entry of hydrogen gas into the engine room 5, thereby improving safety.

[0054] The engine room 5 has multiple liquefied gas consumption devices 9, and the gas adjustment room 6 may have multiple gas adjustment rooms 6, each of which is equipped with gas adjustment equipment 14 that adjusts the gas, including boil-off gas, supplied from the liquefied gas storage tank 3 to each of the multiple liquefied gas consumption devices 9. Each of the multiple gas adjustment rooms 6 may have an opening / closing door 31 that allows access to and from the outside 30. Since each of the multiple gas adjustment rooms 6 has an opening / closing door 31 that allows access to and from the outside 30, it is possible to improve safety while providing redundancy in the supply of gas, including boil-off gas, to the liquefied gas consumption devices 9.

[0055] This disclosure is not limited to the embodiments described herein, and various improvements and design modifications are possible without departing from the spirit of this disclosure.

[0056] [Note 1] A liquefied gas carrier comprising: a liquefied gas storage tank for storing liquefied gas; an engine room where liquefied gas consuming equipment is located, to which gas is supplied from the liquefied gas storage tank through piping, and the engine room having an opening and closing door for access to and from the outside; a gas adjustment room where gas adjustment equipment is located, to which gas is supplied from the liquefied gas storage tank through the piping, and the gas adjustment room having an opening and closing door for access to and from the outside; and an access passage from the engine room to the gas adjustment room extending from the opening and closing door of the engine room to the opening and closing door of the gas adjustment room. [Note 2] The liquefied gas carrier according to Note 1, wherein the engine room is located adjacent to or separated from the gas adjustment room, and the gas adjustment room does not have an opening and closing door directly connecting it to the engine room. [Note 3] The engine room is located on the bow side of the gas adjustment room, and the opening and closing door of the gas adjustment room is located on the stern side of the gas adjustment room, as described in Note 1 or Note 2. [Note 4] The piping in the gas adjustment room is single-walled, and the piping in the engine room is double-walled, as described in any of Notes 1 to 3. [Note 5] The liquefied gas is liquefied hydrogen, and the liquefied gas storage tank is a liquefied hydrogen storage tank, as described in any of Notes 1 to 4. [Note 6] The engine room has a plurality of liquefied gas consumption devices, the gas adjustment room has a plurality of gas adjustment rooms, each of which is equipped with gas adjustment devices that adjust the gas supplied from the liquefied gas storage tank to each of the plurality of liquefied gas consumption devices, and each of the plurality of gas adjustment rooms has an opening and closing door for access to and from the outside, as described in any of Notes 1 to 5.

[0057] 1. Liquefied gas carrier 3. Liquefied gas storage tank 5. Engine room 6. Gas adjustment room 9. Boiler (liquefied gas consumption equipment) 14. Gas adjustment valve (gas adjustment equipment) 20. Piping 30. Exterior 31, 32. Opening / closing doors 33. Access passage

Claims

1. A liquefied gas carrier comprising: a liquefied gas storage tank for storing liquefied gas; an engine room where liquefied gas consumption equipment is located, and which is supplied with gas from the liquefied gas storage tank through piping, and which has an opening and closing door for access to and from the outside; a gas adjustment room where gas adjustment equipment is located, which is configured to adjust the gas supplied from the liquefied gas storage tank to the liquefied gas consumption equipment through the piping, and which has an opening and closing door for access to and from the outside; and an access passage from the engine room to the gas adjustment room, extending from the opening and closing door of the engine room to the opening and closing door of the gas adjustment room.

2. The liquefied gas carrier according to claim 1, wherein the engine room is located adjacent to or separated from the gas adjustment room, and the gas adjustment room does not have an opening / closing door that directly connects to the engine room.

3. The liquefied gas carrier according to claim 1, wherein the engine room is located on the bow side of the gas adjustment room, and the opening and closing door of the gas adjustment room is located on the stern side of the gas adjustment room.

4. The liquefied gas carrier according to claim 1, wherein the piping in the gas adjustment chamber is single-walled, and the piping in the engine room is double-walled.

5. The liquefied gas carrier according to claim 1, wherein the liquefied gas is liquefied hydrogen, and the liquefied gas storage tank is a liquefied hydrogen storage tank.

6. The liquefied gas carrier according to claim 1, wherein the engine room has a plurality of liquefied gas consumption devices, the gas adjustment room has a plurality of gas adjustment rooms, each of which is equipped with gas adjustment devices that adjust the gas supplied from the liquefied gas storage tank to each of the plurality of liquefied gas consumption devices, and each of the plurality of gas adjustment rooms has an opening and closing door for access to and from the outside.

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