Floating body

Abstract

To suppress dispersion of ammonia into a floating body while suppressing complication of a structure and a cost increase when ammonia fuel leaks.SOLUTION: A float comprises: a floating body; and a plurality of device units provided in the floating body. Each of the device units is provided with an ammonia fuel related device and a cover that covers the ammonia fuel related device so as to dispose the ammonia fuel related device therein.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a floating body.

Background Art

[0002] In floating bodies such as ships, when carrying combustible gas as propulsion fuel or cargo, countermeasures are taken in case gas leakage occurs from the tank that stores the combustible gas or the piping system connected to the tank.

[0003] Patent Document 1 discloses a configuration in which an ammonia storage tank, an ammonia injection nozzle, and an ammonia supply pipe have a double structure so that ammonia does not leak into the ship. In this configuration, the ammonia storage tank in which ammonia is stored is housed in an ammonia storage tank chamber. The base end portion of the ammonia injection nozzle that ejects the ammonia stored in the ammonia storage tank is housed in an ammonia injection nozzle chamber. The ammonia supply pipe that guides the ammonia stored in the ammonia storage tank to the ammonia injection nozzle is housed in a duct.

[0004] On the other hand, Patent Document 2 discloses a configuration in which a circulation path of fresh water consisting of a closed circuit is interposed between a refrigerant circulation circuit consisting of a closed circuit in which ammonia circulates and a heat exchange target side (load side, seawater side) in a heat exchanger (condenser and evaporator) that uses ammonia as a refrigerant. In this Patent Document 2, heat exchange is performed via fresh water between ammonia as a refrigerant and a heat exchange target. And in this Patent Document 2, when ammonia leaks, the leaked ammonia is dissolved in fresh water to suppress leakage to the heat exchange target side.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

[0006] The configuration described in Patent Document 1 has the drawback of increasing the complexity of the storage tank, injection nozzle, and supply pipe structure and raising manufacturing costs, as each of these components is duplicated. Furthermore, while Patent Document 2 can suppress ammonia leakage in refrigeration and air conditioning systems, it has the drawback of being difficult to apply when ammonia is used as a gaseous fuel.

[0007] This disclosure was made to solve the above-mentioned problems, and aims to provide a float that can suppress the diffusion of ammonia into the float body while keeping structural complexity and cost increases to a minimum. [Means for solving the problem]

[0008] To solve the above problems, the floating structure relating to this disclosure comprises a floating structure body and The floating body is provided with an ammonia fuel tank for storing ammonia as fuel, Provided on the floating body ammonia stored in the ammonia fuel tank is supplied. The system comprises a plurality of equipment units, each of which has an ammonia fuel-related device and a cover that encloses the ammonia fuel-related device such that each ammonia fuel-related device is positioned inside, the ammonia fuel-related device includes a fuel supply device, and the cover is provided for each fuel supply device. The ammonia fuel tank is provided outside the cover. ru. [Effects of the Invention]

[0009] The floating structure described herein can suppress the diffusion of ammonia into the floating structure itself while keeping structural complexity and cost increases to a minimum. [Brief explanation of the drawing]

[0010] [Figure 1] This is a side view of the floating body as a floating body in the first embodiment of the present disclosure. [Figure 2] This is a plan view showing an equipment unit provided on a floating body in the first embodiment of the present disclosure. [Figure 3] This is a side cross-sectional view of the equipment unit in the first embodiment of the present disclosure. [Figure 4] This is a plan view showing an equipment unit provided on a floating body in a second embodiment of the present disclosure. [Figure 5] This is a plan view showing an equipment unit provided on a floating body in a third embodiment of the present disclosure. [Modes for carrying out the invention]

[0011] [First Embodiment] Hereinafter, the floating body as an embodiment of this disclosure will be described with reference to Figures 1 to 5. (Structure of the floating body) As shown in Figure 1, the floating body 1 of this embodiment comprises a floating body body 3, a superstructure 4, a combustion device 8, a plurality of equipment units 10A, an ammonia fuel tank 16, an ammonia supply line 17, and a piping system 30. The floating body 1 of this embodiment will be described as a vessel capable of navigation by a main engine, etc., as an example. The type of vessel for the floating body 1 is not limited to a specific type of vessel. Examples of vessel types for the floating body 1 include liquefied gas carriers, ferries, RORO ships, car carriers, passenger ships, etc.

[0012] The floating body 3 has a pair of side panels 5A and 5B that form its outer shell, and a bottom 6. The side panels 5A and 5B are each provided with a pair of side plates that form the port and starboard sides, respectively. The bottom 6 is provided with a bottom plate that connects these side panels 5A and 5B. Together with these pair of side panels 5A and 5B and the bottom 6, the outer shell of the floating body 3 has a U-shape in a cross section perpendicular to the bow-stern direction FA.

[0013] The floating body main body 3 further includes an upper deck 7 which is an all-through deck arranged in the uppermost layer. The superstructure 4 is formed on this upper deck 7. Living quarters and the like are provided inside the superstructure 4. In the floating body 1 of the present embodiment, for example, a cargo space (not shown) for loading cargo is provided on the bow 3a side in the fore-and-aft direction FA of the superstructure 4.

[0014] The combustion device 8 is a device that generates thermal energy by burning fuel, and is provided inside the floating body main body 3 described above. Examples of the combustion device 8 include an internal combustion engine used as a main engine for propelling the floating body 1, an internal combustion engine used for a power generation facility that supplies electricity to the ship, a boiler that generates steam as a working fluid, and the like. The combustion device 8 of the present embodiment can switch between using ammonia as fuel and other fuels such as light oil different from ammonia.

[0015] A plurality of equipment units 10A are provided in the floating body main body 3. In the present embodiment, for example, two equipment units 10A are arranged (see FIG. 2), but three or more may be arranged. In the present embodiment, the plurality of equipment units 10A are arranged in the same compartment K inside the floating body main body 3. The compartment K of the present embodiment exemplifies the case where it is an engine room 9. The plurality of equipment units 10A may be arranged in other rooms inside the floating body main body 3 different from the engine room 9. Also, the compartment in which the plurality of equipment units 10A are arranged may be provided on the upper deck 7.

[0016] The ammonia fuel tank 16 is a tank that stores liquid ammonia (in other words, liquefied ammonia). This ammonia fuel tank 16 is installed on the upper deck 7 on the stern 3b side of the superstructure 4. Note that the arrangement of the ammonia fuel tank 16 is an example and is not limited to the upper deck 7 on the stern 3b side of the superstructure 4. The ammonia fuel tank 16 of the present embodiment stores liquefied ammonia as fuel for the combustion device 8.

[0017] The ammonia supply line 17 connects the ammonia fuel tank 16 and the equipment unit 10A and is configured to supply at least the ammonia stored in the ammonia fuel tank 16 to the equipment unit 10A. A pump (not shown) for sending the ammonia in the ammonia fuel tank 16 to the equipment unit 10A is provided in the ammonia supply line 17.

[0018] FIG. 2 is a plan view showing an equipment unit provided on a floating body in the first embodiment of the present disclosure. FIG. 3 is a side sectional view of the equipment unit in the first embodiment of the present disclosure. As shown in FIGS. 1 to 3, each equipment unit 10A includes an ammonia fuel related device 11 and a housing 20A that houses the ammonia fuel related device 11.

[0019] The ammonia fuel related device 11 is various devices that handle ammonia fuel. Examples of the ammonia fuel related device 11 include a pump that pumps ammonia from the ammonia fuel tank 16 to the combustion device 8, a heater for heating the ammonia sent to the combustion device 8, an electric valve, and the like. The ammonia fuel related device 11 means all devices that handle ammonia, and examples thereof include an ammonia fuel device that handles ammonia and an ammonia cargo device that handles ammonia as cargo.

[0020] In the present embodiment, as the ammonia fuel related device 11, a fuel supply device 12 that supplies ammonia fuel to the combustion device is exemplified. The fuel supply device 12 includes a temporary storage tank 14 and a pump 15. The temporary storage tank 14 temporarily stores liquefied ammonia as fuel. The pump 15 feeds the ammonia fuel stored in the temporary storage tank 14 to the combustion device 8. In addition to the temporary storage tank 14 and the pump 15, the fuel supply device 12 includes various valves such as an on-off valve and a check valve, and other devices (all not shown) for controlling the interruption and the like of the supply of ammonia fuel to the combustion device 8.

[0021] The piping system 30 connects the fuel supply device 12 of each equipment unit 10A to the combustion device 8. The piping system 30 supplies liquefied ammonia from the temporary storage tank 14 to the combustion device 8, while returning any excess ammonia that is not used as fuel in the combustion device 8 back to the temporary storage tank 14. In this embodiment, only the configuration in which the piping system 30 supplies liquefied ammonia from the temporary storage tank 14 to the combustion device 8 is shown, and the piping system 30 in this embodiment includes a pipe 31 and a valve 32.

[0022] The piping 31 connects the fuel supply device 12 and the combustion device 8, and guides liquefied ammonia from the fuel supply device 12 to the combustion device 8. The valve 32 is provided in the piping 31 and is capable of adjusting the flow rate of liquefied ammonia flowing through the piping 31.

[0023] In this embodiment, of the two equipment units 10A, the fuel supply device 12 of one equipment unit 10P supplies liquefied ammonia to the combustion device 8A, which is the main engine. The fuel supply device 12 of the other equipment unit 10A, 10Q, supplies liquefied ammonia to the combustion device 8B, which is used as an auxiliary engine such as a generator. In other words, in this embodiment, the piping system 30A connecting the fuel supply device 12 of one equipment unit 10P to the combustion device 8A and the piping system 30B connecting the fuel supply device 12 of the other equipment unit 10Q to the combustion device 8B are provided separately.

[0024] As shown in Figures 2 and 3, the housing 20A houses the ammonia fuel-related equipment 11 in each equipment unit 10A. The housing 20A comprises a base 21, a frame 22, and a cover 25.

[0025] The base 21 is placed on the floor of compartment K (engine room 9) where the equipment unit 10A is installed. In this embodiment, the base 21 is detachably fixed to the floor of compartment K. The base 21 supports the ammonia fuel-related equipment 11 from below. The base 21 has a rectangular shape when viewed from above in plan view, for example. In this embodiment, the equipment unit 10A is positioned with the long side direction D1 of the base 21 aligned with the bow-stern direction FA. In addition, in this embodiment, the equipment unit 10A is positioned with the short side direction D2 of the base 21 aligned with the bow-stern direction FA. The base 21 is formed using, for example, steel material. The bottom or top surface of the base 21 may be closed off with, for example, a steel plate. Note that the orientation of the equipment unit 10A is not limited to the above orientation.

[0026] The frame 22 is mounted on the base 21. The frame 22 comprises, for example, four support columns 23 rising upward from the four corners of the base 21, and an upper beam member 24 connecting the upper ends of the support columns 23. The frame 22 is formed to enclose the ammonia fuel-related equipment 11. The equipment unit 10A of this embodiment is housed in a so-called container-like housing 20A, which comprises the base 21, the frame 22, and the cover 25. More specifically, the equipment unit 10A, with its base 21, frame 22, and cover 25, has an external shape equivalent to that of an ISO standard shipping container.

[0027] The cover 25 is attached to the frame 22. The cover 25 is positioned to cover the top of the frame 22 and the four sides of the frame 22 when viewed from above. The cover 25 is plate-shaped, and its outer periphery is fixed to the frame 22. The cover 25 may be made of a resin-based material such as polycarbonate or acrylic. In addition, the cover 25 may be made of a light-transmitting material so that the inside can be seen from the outside of the housing 20A, or at least a part of it. The cover 25 does not need to be made of a material that contains copper or the like that reacts in contact with ammonia, and is not limited to being made of the above-mentioned resin-based material.

[0028] As shown in Figure 3, the equipment unit 10A of this embodiment further includes a watering device 50 and a ventilation device 53. The sprinkler system 50 sprinkles water into the housing 20A in the event of ammonia fuel leakage within the housing 20A. The sprinkler system 50 includes a water supply pipe 51 and a sprinkler nozzle 52. The water supply pipe 51 supplies water from outside the housing 20A. The sprinkler nozzle 52 sprays the water supplied by the water supply pipe 51 into the housing 20A. Multiple sprinkler nozzles 52 may be provided in the upper part of the housing 20A.

[0029] The ventilation device 53 discharges vaporized ammonia to the outside of the housing 20A in the event of ammonia fuel leakage within the housing 20A. The ventilation device 53 comprises a duct 54 and a fan 55. One end of the duct 54 is connected to a through-hole (not shown) formed in the cover 25 of the housing 20A. The other end of the duct 54 is connected to an exhaust duct (not shown) or pollution control equipment (not shown) provided on the floating body 3. The fan 55 discharges ammonia (gas) generated inside the housing 20A to the outside through the duct 54. The ventilation device 53 may be of the positive pressure or negative pressure type, but from the viewpoint of suppressing ammonia leakage to the surroundings, a negative pressure type is preferred.

[0030] Furthermore, the pressure of the atmosphere inside the housing 20A may decrease due to watering by the sprinkler system 50, exhaust of ammonia (gas) by the ventilation system 53, etc. For this reason, the equipment unit 10A may be equipped with a relief valve (not shown) on the cover 25 that opens when the pressure of the atmosphere inside the housing 20A drops below a predetermined level.

[0031] Furthermore, the equipment unit 10A may also include a water recovery unit (not shown) for recovering water sprayed by the watering device 50. As shown in Figure 3, in the embodiment of this disclosure, the water recovery unit (not shown) discharges, for example, the water sprayed by the watering device 50 and accumulated at the bottom of the housing 20A to the outside of the housing 20A. Here, the water recovery unit (not shown) discharges the recovered water to the outside of the floating body 3.

[0032] Furthermore, the equipment unit 10A may be equipped with a camera (not shown) to capture images of the inside of the housing 20A in the event of ammonia fuel leakage within the housing 20A. Images (video) captured by the camera are displayed on a monitor of a monitoring device 59 that monitors the operating status of the equipment unit 10A. Persons responsible for monitoring the operating status of the equipment unit 10A can remotely check the inside of the housing 20A by viewing the monitor.

[0033] Furthermore, the equipment unit 10A may be equipped with a sensor 58 that detects whether or not there is a leak of ammonia fuel inside the housing 20A. If the sensor 58 detects that an ammonia fuel leak has occurred inside the housing 20A, the monitoring device 59 may notify the outside that a leak has occurred by sounding a predetermined warning, displaying a message, or illuminating a warning lamp. In addition, in response to this, the monitoring device 59 may be configured to allow a person in charge of monitoring the operating status of the equipment unit 10A to operate the valve 32, watering device 50, ventilation device 53, camera (not shown), etc., via the monitoring device 59. Moreover, if the sensor 58 detects that an ammonia fuel leak has occurred inside the housing 20A, the monitoring device 59 may be configured to automatically operate the valve 32, watering device 50, ventilation device 53, camera (not shown), etc., based on a pre-set computer program.

[0034] (Effects and Benefits) In the floating body 1 of the above embodiment, multiple equipment units 10A, including ammonia fuel-related equipment 11, are provided on the floating body 3. Each equipment unit 10A is equipped with a cover 25 that covers the ammonia fuel-related equipment 11. As a result, even if ammonia fuel leaks from the ammonia fuel-related equipment 11, the leaked ammonia fuel is contained within the cover 25. This prevents the ammonia fuel from diffusing outside the cover 25. A cover 25 only needs to be provided for each piece of ammonia fuel-related equipment 11, and the diffusion of ammonia fuel can be suppressed with a simple configuration. Therefore, the diffusion of ammonia into the floating body 3 can be suppressed while keeping structural complexity and cost increases to a minimum.

[0035] Furthermore, if an ammonia fuel leak occurs in only some of the multiple equipment units 10A, the ammonia fuel-related equipment 11 can continue to operate in the remaining equipment units 10A. In addition, if water is sprayed using the watering device 50 in the equipment unit 10A where the ammonia fuel leak has occurred, the sprayed water will not spread outside the housing 20A of that equipment unit 10A. This allows post-spraying cleanup to be carried out in a short time.

[0036] In the above embodiment, the equipment unit 10A further includes a watering device 50. As a result, if ammonia fuel leaks from the ammonia fuel-related equipment 11 into the cover 25, the water spraying device 50 will spray water into the space inside the cover 25, allowing the ammonia to be absorbed by the water. Therefore, the diffusion of ammonia into the floating body 3 can be effectively suppressed. In addition, compared to spraying water throughout the entire compartment K, the volume inside the housing 20A is smaller, so less water is needed, and ammonia can be absorbed quickly.

[0037] Furthermore, since the equipment unit 10A is equipped with a ventilation device 53, if ammonia fuel leaks from the ammonia fuel-related equipment 11 into the cover 25, the ventilation device 53 can discharge the ammonia inside the cover 25 to the outside. In this case, compared to ventilating the entire compartment K, the volume inside the housing 20A is smaller, and ventilation can be performed more quickly. Also, since each equipment unit 10A is equipped with a ventilation device 53, the capacity of the fan 55 is smaller, which helps to reduce costs.

[0038] In the above embodiment, multiple equipment units 10A are arranged in the same compartment K within the floating body 3. As a result, when multiple equipment units 10A are arranged in the same compartment K within the floating body 3, even if an ammonia fuel leak occurs in some of the equipment units 10A, the leakage of ammonia fuel outside the cover 25 of the equipment unit 10A where the leak occurred is suppressed. Therefore, the impact on other equipment units 10A can be minimized, and the operation of ammonia fuel-related equipment 11 in the other equipment units 10A can continue.

[0039] In the above embodiment, at least a portion of the cover 25 is formed to allow permeability from the outside to the inside of the cover 25. Therefore, the operation of the ammonia fuel equipment inside the cover 25 and whether or not there is any leakage of ammonia fuel can be visually confirmed from the outside of the cover 25.

[0040] The floating body 1 in the above embodiment comprises a base 21 and a frame 22 formed to surround the ammonia fuel-related equipment 11, and the cover 25 is attached to the frame 22. Therefore, the equipment unit 10A can be transported and installed inside the floating body 3 in the same way as a container. If the housing 20A is made small enough to be transported by a vehicle such as a trailer or truck, then when installing the housing 20A, it can be easily transported outside the floating body 1. Furthermore, by making the housing 20A as strong as or stronger than a shipping container such as a so-called ISO container, it becomes possible to stack multiple housings 20A vertically.

[0041] In the above embodiment, the ammonia fuel-related equipment 11 includes a fuel supply device 12 capable of supplying ammonia fuel. Therefore, if ammonia fuel leaks from the fuel supply device 12 installed inside the floating body 3, it is possible to suppress the diffusion of ammonia into the floating body 3.

[0042] [Second Embodiment] Next, a second embodiment of the floating body according to this disclosure will be described. In the second embodiment described below, only the configuration of the equipment unit differs from the first embodiment, so the same reference numerals are used for the same parts as in the first embodiment, and redundant explanations will be omitted. Figure 4 is a plan view showing an equipment unit provided on a floating body in a second embodiment of the present disclosure.

[0043] As shown in Figure 4, the equipment unit 10B of the floating body 1 in this second embodiment includes ammonia fuel-related equipment 11 and a housing 20B.

[0044] The cover 25 of the housing 20B has an opening 26 that connects the inside and outside of the cover 25. Furthermore, a compartment K (engine room 9), where multiple housings 20B are arranged, is provided with a compartment watering device 60. The compartment watering device 60 sprays water into compartment K if an ammonia fuel leak occurs in at least one of the multiple housings 20B. The watering device 50 includes a water supply pipe 61 and watering nozzles 62. The water supply pipe 61 supplies water from outside compartment K. The watering nozzles 62 spray the water supplied by the water supply pipe 61 into compartment K. Note that multiple watering nozzles 62 may be provided in compartment K, above the housings 20B.

[0045] (Effects and Benefits) According to the second embodiment described above, the cover 25 is provided with an opening 26, and a compartment watering device 60 is provided in the compartment K where the equipment unit 10B is located. Therefore, if ammonia fuel leaks from the ammonia fuel-related equipment 11, the ammonia fuel is discharged into the space outside the cover 25 through the opening 26. The discharged ammonia fuel is then sprayed with water by the compartment watering device 60, which absorbs the ammonia.

[0046] Furthermore, by providing each equipment unit 10B with a cover 25, it is possible to prevent the ammonia fuel-related equipment 11 of each equipment unit 10B from getting wet when water is sprayed from the in-compartment watering device 60.

[0047] (Modified version of the second embodiment) In the second embodiment described above, a watering device 50 is shown inside the housing 20B, but the watering device 50 provided inside the housing 20B may be omitted. Also, although a ventilation device 53 is shown inside the housing 20B, the ventilation device 53 may be omitted. If the ventilation device 53 is not provided inside the housing 20B, a configuration similar to that of the ventilation device 53 may be provided in compartment K.

[0048] [Third Embodiment] Next, a third embodiment of the floating body according to this disclosure will be described. In the third embodiment described below, the only difference from the second embodiment is the configuration that includes a connecting unit, so the same reference numerals are used for the same parts as in the first embodiment and redundant explanations are omitted. Figure 5 is a plan view showing an equipment unit provided on a floating body in a third embodiment of the present disclosure.

[0049] As shown in Figure 5, the floating body 1 of this third embodiment has a connecting unit 70 positioned between a plurality of equipment units 10A. Multiple equipment units 10A are arranged horizontally at intervals on the floor of compartment K (engine room 9). Here, Figure 5 illustrates a case where multiple equipment units 10A are arranged at intervals along the short side direction D2 of a rectangular equipment unit 10A in plan view, but these multiple equipment units 10A may also be arranged at intervals along the long side direction D1 of a rectangular equipment unit 10A in plan view. Furthermore, the connection units 70 can be stacked on top of the equipment units 10A, a method known as stacking.

[0050] The connection unit 70 is equipped with connecting piping 71. The connecting piping 71 connects ammonia fuel-related equipment 11 of adjacent equipment units 10A with the connection unit 70 in between. The connection unit 70 is equipped with a housing 80 that covers the connecting piping 71. The housing 80 is equipped with a base 21 and frame 22 similar to that of the equipment unit 10A, and a piping cover 75. The piping cover 75 is attached to the frame 22 and is positioned between the multiple equipment units 10A to cover the top and sides of the frame 22, respectively.

[0051] (Effects and Benefits) According to the third embodiment described above, a connecting pipe 71 and a pipe cover 75 covering the connecting pipe 71 are arranged between multiple equipment units 10A. Therefore, even if ammonia fuel leaks from the connecting pipe 71 that spans multiple equipment units 10A, the diffusion of ammonia into the floating body 3 can be suppressed.

[0052] (Modified version of the third embodiment) In the third embodiment, a connecting unit 70, which includes a connecting pipe 71 and a pipe cover 75, is placed between the multiple equipment units 10A shown in the first embodiment. However, instead of the equipment units 10A, the equipment unit 10B shown in the second embodiment may be placed.

[0053] <Other Embodiments> Although embodiments of this disclosure have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and may include design changes and the like that do not depart from the gist of this disclosure. For example, in the above embodiment, we described a case where the floating body 1 is a vessel capable of navigation using a main engine, etc., but the floating body is not limited to a vessel.

[0054] Furthermore, in the above embodiment, the fuel supply device 12 of one equipment unit 10P supplies ammonia fuel to the combustion device 8A, which is the main engine, and the fuel supply device 12 of the other equipment unit 10Q supplies ammonia fuel to the combustion device 8B, which is used as an auxiliary engine. However, the embodiment is not limited to this. Ammonia fuel may be supplied from the fuel supply devices 12 of multiple equipment units 10A and 10B to one ammonia fuel-related device 11. Alternatively, ammonia fuel may be distributed and supplied from the fuel supply devices 12 of two equipment units 10A and 10B to three or more ammonia fuel-related devices 11.

[0055] Furthermore, in the above embodiments, each equipment unit 10A, 10B is equipped with a fuel supply device 12 as ammonia fuel-related equipment 11, but the configuration is not limited to this. For example, a combustion device 8 may be placed in addition to the fuel supply device 12 within the housings 20A, 20B of each equipment unit 10A, 10B.

[0056] Furthermore, in the above embodiments, the case in which each equipment unit 10A, 10B is rectangular in plan view and has the external shape of an ISO container was described, but the external shape of the equipment units 10A, 10B is not limited to the above shape.

[0057] <Note> The floating body 1 described in each embodiment can be understood, for example, as follows:

[0058] (1) The floating body 1 according to the first embodiment comprises a floating body body 3 and a plurality of equipment units 10A, 10B provided on the floating body body 3, wherein each of the plurality of equipment units 10A, 10B comprises ammonia fuel-related equipment 11 and a cover 25 that covers the ammonia fuel-related equipment 11 so that each of the ammonia fuel-related equipment 11 is arranged inside. Examples of ammonia fuel-related equipment 11 include a fuel supply device 12 and a combustion device 8.

[0059] In this floating structure 1, multiple equipment units 10A and 10B, each containing ammonia fuel-related equipment 11, are provided within the floating structure body 3. Each equipment unit 10A and 10B is equipped with a cover 25 that encloses the ammonia fuel-related equipment 11. This ensures that even if ammonia fuel leaks from the ammonia fuel-related equipment 11, the leaked ammonia fuel is contained within the cover 25. This prevents the ammonia fuel from spreading outside the cover 25. A cover 25 only needs to be provided for each piece of ammonia fuel-related equipment 11, allowing for a simple configuration to suppress the diffusion of ammonia fuel. Therefore, while keeping structural complexity and cost increases low, it is possible to suppress the diffusion of ammonia into the floating structure body 3 in the event of ammonia fuel leakage.

[0060] (2) The floating body 1 according to the second embodiment is the floating body 1 of (1), wherein the equipment units 10A and 10B further include a watering device 50 capable of spraying water into the space within the cover 25.

[0061] As a result, if ammonia fuel leaks from the ammonia fuel-related equipment 11 into the cover 25, the water spraying device 50 will spray water into the space inside the cover 25, causing the ammonia to be absorbed by the water. This effectively suppresses the diffusion of ammonia into the floating body 3.

[0062] (3) The floating body 1 according to the third embodiment is the floating body 1 of (1) or (2), wherein the plurality of equipment units 10A and 10B are arranged in the same compartment K within the floating body body 3.

[0063] As a result, when multiple equipment units 10A and 10B are located in the same compartment K within the floating body 3, even if an ammonia fuel leak occurs in some of the equipment units 10A and 10B, the leakage of ammonia fuel outside the cover 25 of the equipment unit 10A or 10B where the leak occurred is suppressed. Therefore, the impact on the other equipment units 10A and 10B can be minimized, and the operation of the ammonia fuel-related equipment 11 in the other equipment units 10A and 10B can continue.

[0064] (4) The floating body 1 according to the fourth embodiment is the floating body 1 of (3), wherein the cover 25 has an opening 26 that connects the inside and outside of the cover 25, and the compartment K in which the equipment unit 10B is located is provided with a compartment watering device 60 that can spray water inside the compartment K.

[0065] As a result, if ammonia fuel leaks from the ammonia fuel-related equipment 11, the ammonia fuel is discharged into the space outside the cover 25 through the opening 26. The discharged ammonia fuel is then sprayed with water by the compartment watering device 60, allowing the ammonia to be absorbed by the water.

[0066] (5) The floating body 1 according to the fifth embodiment is any one of the floating bodies 1 from (1) to (4), wherein at least a part of the cover 25 is formed so that the inside can be seen from the outside of the cover 25.

[0067] This allows for visual inspection from outside the cover 25 to check for ammonia fuel leaks and other related issues.

[0068] (6) The floating body 1 according to the sixth embodiment is any one of the floating body 1 of (1) to (5), comprising a base 21 that supports the ammonia fuel-related equipment 11, and a frame 22 provided on the base 21 and formed to surround the ammonia fuel-related equipment 11, wherein the cover 25 is attached to the frame 22.

[0069] This makes it easy to transport the equipment units 10A and 10B and install them inside the floating body 3.

[0070] (7) The floating body 1 according to the seventh embodiment is any one of the floating bodies 1 from (1) to (6), wherein the ammonia fuel-related equipment 11 includes a fuel supply device 12 capable of supplying ammonia fuel.

[0071] This makes it possible to suppress the diffusion of ammonia into the floating body 3 in the event of ammonia fuel leakage from the fuel supply device 12 located inside the floating body 3.

[0072] (8) The floating body 1 according to the eighth embodiment is any one of the floating bodies 1 of (1) to (7), wherein the multiple equipment units 10A, 10B are arranged at intervals from each other, and between the multiple equipment units 10A, 10B are arranged connecting pipes 71 that connect the ammonia fuel-related equipment 11 of the multiple equipment units 10A, 10B, and a pipe cover 75 that covers the connecting pipes 71.

[0073] As a result, the connecting pipes 71 that connect the ammonia fuel-related equipment 11 of equipment units 10A and 10B are also covered by the pipe cover 75, so that if ammonia fuel leaks from the connecting pipes 71, the diffusion of ammonia into the floating body 3 can be suppressed. [Explanation of Symbols]

[0074] 1…Floating structure 3…Floating structure body 3a…Bow 4…Superstructure 5A,5B…Side 6…Bottom 7…Upper deck 8,8A,8B…Combustion system 9…Engine room 10A,10B,10P,10Q…Equipment unit 11…Ammonia fuel-related equipment 12…Fuel supply system 14…Temporary storage tank 15…Pump 16…Ammonia fuel tank 17…Ammonia supply line 20A,20B…Housing 21…Base 22…Frame 23…Support column 24…Upper beam 25…Cover 25h…Through hole 26…Opening 30,30A,30B…Piping system 31…Piping 32…Valve 50…Sprinkler system 51…Water supply pipe 52…Sprinkler nozzle 53…Ventilation system 54…Duct 55…Fan 58…Sensor 59…Monitoring device 60...In-section watering system 61...Water supply pipe 62...Watering nozzle 70...Connection unit 71...Connecting piping 75...Pipe cover 80...Housing K...Section

Claims

1. The floating body and The floating body is provided with an ammonia fuel tank for storing ammonia as fuel, The floating body is provided with a plurality of equipment units to which ammonia stored in the ammonia fuel tank is supplied, Each of the aforementioned equipment units is: Ammonia fuel-related equipment, It has a cover that covers the ammonia fuel-related equipment so that each of the ammonia fuel-related equipment is arranged inside, The ammonia fuel-related equipment includes a fuel supply device, The cover is provided for each fuel supply device. The ammonia fuel tank is located outside the cover. A floating object.

2. The floating body and The floating body comprises a plurality of equipment units provided on the floating body, Each of the aforementioned equipment units is: Ammonia fuel-related equipment, It has a cover that covers the ammonia fuel-related equipment so that each of the ammonia fuel-related equipment is arranged inside, The ammonia fuel-related equipment includes a fuel supply device, The cover is provided for each fuel supply device. Inside the cover, in addition to the fuel supply device, is a combustion device that generates thermal energy by burning ammonia. A floating object.

3. The aforementioned equipment unit is The cover is further equipped with a watering device capable of spraying water into the space within the cover. The floating body according to claim 1 or 2.

4. Multiple of the aforementioned equipment units are arranged in the same section within the floating body. A floating body according to any one of claims 1 to 3.

5. The cover has an opening that connects the inside and outside of the cover, The compartment in which the equipment unit is located is provided with a compartmental watering device capable of spraying water within the compartment. The floating body according to claim 4.

6. At least a portion of the cover is formed to allow the interior to be seen from the outside of the cover. A floating body according to any one of claims 1 to 5.

7. A base for supporting the ammonia fuel-related equipment, The base is provided with a frame formed to surround the ammonia fuel-related equipment, The cover is attached to the frame. A floating body according to any one of claims 1 to 6.

8. The fuel supply device includes a temporary storage tank for temporarily storing liquefied ammonia as fuel. The floating body according to claim 1.

9. The floating body and The floating body comprises a plurality of equipment units provided on the floating body, Each of the aforementioned equipment units is: Ammonia fuel-related equipment, It has a cover that covers the ammonia fuel-related equipment so that each of the ammonia fuel-related equipment is arranged inside, The ammonia fuel-related equipment includes a fuel supply device, The cover is provided for each fuel supply device. Multiple of the aforementioned equipment units are arranged with space between them. Between multiple of the aforementioned equipment units, A connecting pipe that connects the ammonia fuel-related equipment of multiple equipment units, A pipe cover that covers the aforementioned connecting pipe is provided. A floating object.

Images