Construction method for vessel and component of fuel supplying device for vessel

Abstract

To reduce construction time and construction labor without increasing a work amount in a vessel construction place in construction of a supply facility for fuel for vessel.SOLUTION: A fuel supply pump unit 1, a heat exchange unit 2, and a buffer tank unit 3 are prepared on land, the units 1, 2, 3 store equipment composing a fuel supply device in a partition wall box, piping and wiring to the equipment are pulled out of the partition wall box, the units 1, 2, 3 are placed in a fuel adjustment chamber 6, piping and wiring between the respective units 1, 2, 3 are connected, and piping and wiring from the units 1, 2, 3 are connected outside the fuel adjustment chamber 6.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a construction method for a ship, and more particularly to a construction method for a ship that is targeted at equipment for supplying fuel to the ship, and that shortens construction time and reduces construction labor without increasing the amount of construction work at the ship building yard, and to components of a fuel supply device for the ship. [Background technology]

[0002] In marine propulsion engines, there is growing expectation for engines that use ammonia (NH3), LPG (Liquefied Petroleum Gas), LNG (Liquefied Natural Gas), or methanol (CH3OH) as fuel instead of conventional heavy oil in order to reduce carbon dioxide in engine exhaust gas. Dual-fuel engines have also been proposed in which the first fuel is heavy oil and the second fuel is ammonia, LPG, LNG, methanol, or the like. In addition, adapting ships to run on dual fuel is also expected to extend the service life of ships.

[0003] Meanwhile, the conventional method of ship construction is the block construction method. In the block construction method, the equipment inside the ship is divided into several blocks, which are constructed outside the ship, and finally joined together at the shipbuilding yard. Since multiple blocks can be constructed simultaneously, it is said that the construction period can be shortened.

[0004] Patent Document 1 describes a method for constructing a block on land that encloses a pump for delivering heavy fuel oil, including ancillary equipment, thereby reducing construction work at the shipbuilding yard. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5901724 Summary of the Invention [Problem to be solved by the invention]

[0006] However, Patent Document 1 does not cover equipment for supplying volatile or toxic fuels, such as the second fuel of a dual fuel system. To supply volatile or toxic fuels, a fuel adjustment room must be provided separate from the engine room in which the engine is installed. In the fuel adjustment room, the necessary auxiliary equipment is greater than the pump that delivers heavy fuel oil, so the method described in Patent Document 1 cannot be used.

[0007] Furthermore, in the fuel control room, more stringent measures are required to prevent leakage than in the engine room. For example, a certain capacity of ventilation equipment and ducts must be installed to prevent leakage, but the inside of the fuel control room, including the passageways, has a large volume, so the required capacity of the ventilation equipment becomes even larger, which creates a problem of further increasing the amount of construction work at the shipbuilding yard.

[0008] In addition, when the connection to the piping for supplying fuel to the ship is made at the shipbuilding yard, the pressure loss in the piping must be taken into consideration again, which poses the problem of the risk that the pump capacity may not be sufficient.

[0009] Therefore, the object of the present invention is to provide a ship construction method and components of a ship fuel supply system that are targeted at equipment for supplying fuel to ships and that shorten construction time and reduce construction labor without increasing the amount of construction work at the ship construction yard. Further objects of the present invention will become apparent from the following description. [Means for solving the problem]

[0010] The above problems are solved by the following inventions. 1. A fuel supply pump unit, a heat exchanger unit, and a buffer tank unit are provided on land, and are to be installed in a fuel adjustment room of a ship in order to supply fuel for the ship to an engine. the fuel supply pump unit is configured by housing a pump that delivers fuel in a bulkhead housing, and leading hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, and a fuel discharge piping from the pump to the outside of the bulkhead housing, the heat exchanger unit is configured by housing a heat exchanger that vaporizes or adjusts the temperature of the fuel in a partition wall housing, and leading piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, and a fuel discharge piping from the heat exchanger to the outside of the partition wall housing, the buffer tank unit is configured by housing a buffer tank for storing the fuel in a bulkhead housing, and extending a supply pipe to the buffer tank and a discharge pipe from the buffer tank to the outside of the bulkhead housing, Each of the units is installed in the fuel adjustment chamber, Within the fuel adjustment chamber, piping and wiring are connected between the units to configure a fuel supply device, and piping and wiring are connected from the units to the outside of the fuel adjustment chamber. A ship construction method comprising the steps of: 2. Preparing a fuel valve train unit on shore; the fuel valve train unit is configured by housing a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line in a partition wall housing, and drawing piping and control wiring to each of the fuel valve trains to the outside of the partition wall housing, The fuel valve train unit is installed in the fuel adjustment room or the engine room, Connecting the piping and wiring between the units to configure a fuel supply system; 2. The method for constructing a ship according to claim 1. 3. The fuel is ammonia, LPG, LNG, or methanol. 3. The method for constructing a ship according to claim 1 or 2. 4. A ventilation device is installed in the bulkhead housing that houses each device in each unit. 4. The method for constructing a ship according to claim 3. 5. The bulkhead housing of each unit has a structure in which the side panels can be detached so that openings can be made for maintenance of each device housed therein. 3. The method for constructing a ship according to claim 1 or 2. 6. A maintenance space shared by each of the units is provided in the fuel adjustment chamber. 3. The method for constructing a ship according to claim 1 or 2. 7. Each of the units is provided with a device for detecting gas leaking from the fuel. 3. The method for constructing a ship according to claim 1 or 2. 8. preparing a fuel adjustment unit on land to be installed in a fuel adjustment room of a ship to supply fuel for the ship to an engine; the fuel adjustment unit includes a pump for delivering fuel, a heat exchanger for vaporizing or adjusting the temperature of the fuel, and a buffer tank for storing the fuel housed in a bulkhead housing, and includes hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, a fuel discharge piping from the pump, piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, a fuel discharge piping from the heat exchanger, a supply piping to the buffer tank, and a discharge piping from the buffer tank, which are extended to the outside of the bulkhead housing; The fuel adjustment unit is installed in the fuel adjustment chamber, In the fuel adjustment chamber, piping and wiring are connected from the fuel adjustment unit to the outside of the fuel adjustment chamber. A ship construction method comprising the steps of: 9. The fuel adjustment unit is configured such that a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line are housed in the partition wall housing, and piping and control wiring to each of the fuel valve trains are led out to the outside of the partition wall housing. 9. The method for constructing a ship according to claim 8. 10. The fuel is ammonia, LPG, LNG, or methanol. 10. The method for constructing a ship according to claim 8 or 9. 11. A ventilation device is provided in the bulkhead housing of the fuel adjustment unit. 11. The method for constructing a ship according to claim 10. 12. The bulkhead housing of the fuel adjustment unit has a structure in which the side panels are removable so that openings can be made for maintenance of each device housed therein. 10. The method for constructing a ship according to claim 8 or 9. 13. A maintenance space is provided in the fuel adjustment chamber for performing maintenance of each device of the fuel adjustment unit outside the fuel adjustment unit. 10. The method for constructing a ship according to claim 8 or 9. 14. The fuel adjustment unit is provided with a device for detecting gas leaking from the fuel. 10. The method for constructing a ship according to claim 8 or 9. 15. a fuel supply pump unit in which a pump for delivering fuel for a ship is housed in a bulkhead housing, and hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, and a fuel discharge piping from the pump are led out to the outside of the bulkhead housing; a heat exchanger unit in which a heat exchanger for vaporizing or adjusting the temperature of the fuel is housed in a partition wall housing, and piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, and a fuel discharge piping from the heat exchanger are led out to the outside of the partition wall housing; a buffer tank unit in which a buffer tank for storing the fuel is housed in a bulkhead housing, and a supply pipe to the buffer tank and a discharge pipe from the buffer tank are led out to the outside of the bulkhead housing; A component of a fuel supply system for a ship, comprising: 16. A fuel valve train unit in which a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line are housed in a bulkhead housing, and piping and control wiring to each of the fuel valve trains are led out to the outside of the bulkhead housing. 16. A component of a fuel supply system for a ship as described in paragraph 15, comprising: 17. The fuel is ammonia, LPG, LNG, or methanol. 17. A component of a ship fuel supply system as described in paragraph 15 or 16. 18. A ventilation device is installed in the bulkhead housing that houses each device in each unit. 18. A component of a fuel supply system for a ship as described in claim 17. 19. The bulkhead housing of each unit has a structure in which the side panels can be detached so that openings can be made for maintenance of each device housed therein. 17. A component of a ship fuel supply system as described in paragraph 15 or 16. 20. Each of the units is equipped with a device for detecting gas leaking from the fuel. 17. A component of a ship fuel supply system as described in paragraph 15 or 16. twenty one. Components of a fuel supply system for a ship, characterized in that a fuel adjustment unit includes a pump for delivering fuel, a heat exchanger for vaporizing or adjusting the temperature of the fuel, and a buffer tank for storing the fuel, which are housed in a bulkhead housing, and hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, a fuel discharge piping from the pump, piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, a fuel discharge piping from the heat exchanger, a supply piping to the buffer tank, and a discharge piping from the buffer tank are pulled out to the outside of the bulkhead housing. twenty two. The fuel adjustment unit accommodates a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line in the bulkhead housing, and piping and control wiring to each fuel valve train are led out to the outside of the bulkhead housing. 22. A component of a fuel supply system for a ship as described in claim 21. twenty three. The fuel is ammonia, LPG, LNG, or methanol. 23. A component of a ship fuel supply system as described in 21 or 22. twenty four. A ventilation device is installed in the bulkhead housing of the fuel adjustment unit. 24. A component of a fuel supply system for a ship as described in claim 23. twenty five. The bulkhead housing of the fuel adjustment unit has a structure in which the side panels are removable so that openings can be made for maintenance of each device housed therein. 23. A component of a ship fuel supply system as described in 21 or 22. 26. The fuel adjustment unit is provided with a device for detecting gas leaking from the fuel. 23. A component of a ship fuel supply system as described in 21 or 22. Effect of the Invention

[0011] According to the present invention, it is possible to provide a ship construction method and components of a ship fuel supply device that are targeted at equipment for supplying fuel to ships and that shorten construction time and reduce construction labor without increasing the amount of construction work at the ship construction yard. [Brief description of the drawings]

[0012] [Figure 1] 1 is a plan view showing a ship facility constructed by a construction method according to an embodiment of the present invention; [Diagram 2] FIG. 13 is a plan view showing another example of ship equipment constructed by the construction method according to the embodiment of the present invention. [Diagram 3] FIG. 11 is a plan view showing yet another example of ship equipment constructed by the construction method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Preferred embodiments of the present invention will now be described. FIG. 1 is a plan view showing a ship facility constructed by a construction method according to an embodiment of the present invention.

[0014] The present invention relates to a ship construction method and a component of a ship fuel supply system that are targeted at equipment for supplying fuel to ships, and aims to shorten construction time and reduce construction labor without increasing the amount of construction work at the ship building yard.

[0015] In the construction method for a ship of this embodiment, as shown in Figure 1, each of the components of the fuel supply system, namely, fuel supply pump unit 1 including a pump that constitutes a fuel supply system for a ship installed in fuel adjustment chamber 6, heat exchanger unit 2 including a heat exchanger installed in fuel adjustment chamber 6, and buffer tank unit 3 including a buffer tank installed in fuel adjustment chamber 6, are prepared in advance on land.

[0016] The fuel supply pump unit 1 is constructed by housing a pump and all of the ancillary equipment for supplying fuel to the engine of the ship in a bulkhead housing, and the hydraulic piping and control wiring to the pump, the fuel supply piping to the pump, and the fuel discharge piping from the pump are drawn to the outside of the bulkhead housing. Various types of pumps can be used, such as a hydraulic pump or a centrifugal type pump called a canned motor pump.

[0017] The fuel for a ship may be, for example, a dual fuel in which the first fuel is heavy oil and the second fuel is ammonia, LPG, LNG, or methanol. These fuels may be used alone without being used as dual fuels. These fuels are generally flammable, volatile, or toxic.

[0018] When the fuel is ammonia, LPG, or methanol, the fuel supply pump unit 1 includes a low-pressure liquid pump, a high-pressure pump and electric motor, associated automatic and manual valves, filters, a buffer tank and instruments for monitoring and regulating it, a gas-liquid separator or knockout drum to prevent gas from being discharged into the atmosphere, and a set of other auxiliary equipment.

[0019] It should be noted that the knockout drum is not intended to prevent gas from being released into the atmosphere, but rather to prevent liquid from being released directly into the atmosphere. When the fuel is ammonia, an abatement device is provided to prevent the ammonia gas that has passed through the gas-liquid separator or knock-out drum from being released into the atmosphere. The abatement device may be a unitized device that is installed outside the fuel adjustment chamber.

[0020] When the fuel is LNG, the fuel supply pump unit 1 includes a low-pressure liquid pump, a vaporizer, a high-pressure gas compressor and electric motor, associated automatic and manual valves, filters and instruments for monitoring and adjusting them, and a gas-liquid separator or knockout drum to prevent gas from being discharged into the atmosphere. When considering LNG operation of the power generation engine, it also includes a compressor for compressing boil-off gas (BOG) from the tank, and when BOG is used in the main engine, it also includes a higher-pressure BOG compressor and a set of other auxiliary equipment.

[0021] When the fuel is LNG or LPG, a flare stack or the like may be installed after the gas-liquid separator or knockout drum to suppress explosions.

[0022] In the case of any fuel, if the fuel piping is double-piped to satisfy regulatory requirements, a fan for ventilating the space between the outer pipe and the inner pipe may be installed in the fuel adjustment chamber 6.

[0023] The heat exchanger unit 2 is constructed by housing a heat exchanger that vaporizes or adjusts the temperature of the fuel and a set of auxiliary equipment in a bulkhead housing, and the piping and control wiring to the heat exchanger, the fuel supply piping to the heat exchanger, and the fuel discharge piping from the heat exchanger are pulled out to the outside of the bulkhead housing.

[0024] When the fuel is ammonia, LPG, or methanol, the fuel is injected into the ME-LGI engine in liquid form, so the heat exchanger is used to adjust the liquid temperature of the fuel. In the case where the fuel is LNG, the fuel is injected into the ME-GI engine as gas, and the heat exchanger is for vaporizing the fuel.

[0025] As the heat medium of the heat exchanger, seawater, antifreeze such as glycol water, or fresh water or antifreeze cooled by seawater can be used.

[0026] The buffer tank unit 3 is constructed by housing a buffer tank for storing fuel and a set of ancillary equipment such as various valves in a bulkhead housing, and the supply piping to the buffer tank and the discharge piping from the buffer tank are extended to the outside of the bulkhead housing.

[0027] The heat exchanger and the buffer tank may be housed in the same unit bulkhead housing, and may also be used to adjust the temperature inside the fuel tank.

[0028] It is preferable to install ventilation devices 4a, 4b, 4c in the bulkhead housings that house the devices in each of the units 1, 2, 3, and exhaust the air through a duct (not shown) to a vent mast outside the fuel adjustment chamber 6. By providing the ventilation devices 4a, 4b, 4c for each of the units 1, 2, 3, the capacity of each of the ventilation devices 4a, 4b, 4c can be reduced, and power consumption can be reduced. In addition, since each of the units 1, 2, and 3 does not include a maintenance space, each of the ventilation devices 4a, 4b, and 4c can be made smaller, lighter, and less energetic. Each of the ventilation devices 4a, 4b, and 4c can use various types of ventilation devices, such as a ventilation fan that sucks air out of the partition wall housing, or a blower that sends air into the partition wall housing.

[0029] It is also preferable to install a device 9 for detecting gas vaporized due to fuel leakage near each exhaust port 4a, 4b, 4c in each of the units 1, 2, 3. Examples of the device 9 for detecting gas vaporized due to fuel leakage include various types of gas detectors, gas concentration meters, and devices for confirming gas leakage by images. By installing gas detection equipment 9 in each of the units 1, 2, and 3, the location of a gas leak can be identified early, and damage caused by the gas leak can be minimized.

[0030] It is preferable to select a lightweight material for the plate material forming the bulkhead housing of each of the units 1, 2, and 3. In addition, it is preferable that the bulkhead housing of each of the units 1, 2, and 3 has a structure in which the side panels are removable so as to provide openings for maintenance of each of the housed devices.

[0031] The piping and wiring between the units 1, 2, and 3 are left unconnected. Then, the units 1, 2, and 3 are installed in a fuel adjustment room 6 on a ship at a shipbuilding yard.

[0032] Pipes and wiring are connected between each of the units 1, 2, and 3 inside the fuel adjustment chamber 6. In addition, pipes and wiring are connected from each of the units 1, 2, and 3 to the outside of the fuel adjustment chamber 6, thereby forming a fuel supply device. Furthermore, a fuel supply system may be configured by connecting piping and wiring between each of the units 1, 2, and 3, and connecting the units to an engine installed in an engine room via a fuel pipe through a fuel valve train (interface).

[0033] The fuel valve train consists of an SVT (Supply Valve Train) installed in the fuel supply line and an RVT (Return Valve Train) installed in the fuel return line. The SVT is for sending fuel that has passed through a heat exchanger to the engine. The RVT is for returning fuel from the engine to, for example, a buffer tank.

[0034] The fuel valve train may be installed in the fuel adjustment chamber 6 and connected to the engine by a fuel pipe, or may be installed near the engine in the engine room and connected directly to the engine.

[0035] Fuel lines passing through enclosed spaces within the ship must be protected by a secondary enclosure, which may be a ventilation duct or a double-pipe system, and must be provided with a mechanical ventilator with an exhaust gas flow rate of 30 air changes per hour and a gas detection system (IGF 9.5.1).

[0036] In this embodiment, the capacity of each ventilation device 4a, 4b, 4c is reduced, and air is exhausted through ducts to the vent mast outside the fuel adjustment chamber 6, so the thickness of the partition wall surrounding the fuel adjustment chamber 6 can be made thinner.

[0037] It is preferable to provide a maintenance space 5 in the fuel adjustment room 6. The maintenance space 5 is shared by each of the units 1, 2, and 3. A crane is installed on the ceiling of the fuel adjustment room 6, and any of the equipment in each of the units 1, 2, and 3 can be moved to the maintenance space 5 by the crane, thereby enabling maintenance work on the equipment in each of the units 1, 2, and 3 to be performed.

[0038] In this embodiment, by storing the equipment for supplying fuel to the ship and other equipment in a bulkhead box and configuring them as a unit, the time required for piping and wiring work can be reduced, and the time required for installation work within the fuel adjustment room can also be reduced.

[0039] In addition, in this embodiment, by housing each piece of equipment in a bulkhead housing and configuring it as a unit, the number of locations that need to be checked for piping leaks at the ship construction site is reduced, and the time required for airtight testing can be shortened.

[0040] Furthermore, in this embodiment, by housing each piece of equipment in a bulkhead housing and configuring it as a unit, it is possible to optimize power equipment such as pumps, taking into account the influence of pressure loss in piping and the like.

[0041] Furthermore, in this embodiment, by housing each piece of equipment in a bulkhead housing and configuring it as a unit, the amount of ventilation gas required can be reduced, even if the fuel for the ship emits toxic gases such as liquefied ammonia, and the flow rate to the abatement device can be reduced.

[0042] FIG. 2 is a plan view showing another example of ship equipment constructed by the construction method according to the embodiment of the present invention.

[0043] As shown in FIG. 2, in addition to the above-mentioned units 1, 2, and 3, the ship equipment constructed by the construction method of this embodiment may also include a fuel valve train unit 8 prepared on land as a component of the fuel supply device.

[0044] The fuel valve train unit 8 is configured by housing the fuel valve train provided in the fuel supply line, the fuel valve train provided in the fuel return line, and a set of auxiliary equipment in a bulkhead housing, and extending the piping and control wiring to each fuel valve train to the outside of the bulkhead housing.

[0045] Fuel is sent to the engine via the SVT, which is a fuel valve train (interface) installed in the fuel supply line. The SVT is the interface between the engine and the auxiliary equipment (high-pressure pump, heater, filter) that exists in the process of supplying fuel in the buffer tank to the engine by the high-pressure pump. Nitrogen gas is sometimes supplied to the SVT, which is used for purging the fuel in the engine, degassing before maintenance, and airtightness testing after maintenance.

[0046] Fuel is returned from the engine to the buffer tank via the RVT, which is a fuel valve train (interface) provided in the fuel return line. A cooler may be provided in the system leading to the buffer tank. The RVT returns a portion of the fuel to the buffer tank to adjust the flow rate and temperature within the engine. When part of the fuel contains seal oil, the fuel is depressurized in the RVT and returned to the buffer tank via the cooler. In this case, the fuel circulates between the buffer tank and the engine.

[0047] The fuel valve train unit 8, like the aforementioned units 1, 2, and 3, is installed inside the fuel regulation chamber, and piping and wiring are connected from the fuel valve train unit 8 to the inside of the fuel regulation chamber and to the outside of the fuel regulation chamber.

[0048] In fuel valve train unit 8 as well, it is preferable to install ventilation device 4e in the bulkhead housing that houses each fuel valve train and exhaust air through a duct (not shown) to a vent mast outside fuel adjustment chamber 6. By providing ventilation devices 4a, 4b, 4c, 4e for each unit 1, 2, 3, 8, the capacity of each ventilation device 4a, 4b, 4c, 4e can be reduced, thereby reducing power consumption. In addition, since the fuel valve train unit 8 does not include a maintenance space, the ventilation device 4e can be made smaller, lighter, and less energy-consuming. Like the ventilation devices 4a, 4b, and 4c, the ventilation device 4e can use various ventilation devices such as a ventilation fan that sucks air out of the partition wall housing and a blower that sends air into the partition wall housing.

[0049] In this embodiment as well, it is preferable to install a device 9 for detecting gas vaporized due to fuel leakage near each exhaust port 4a, 4b, 4c, 4e in each of the units 1, 2, 3, 8. As described above, examples of the device 9 for detecting gas vaporized due to fuel leakage include various types of gas detectors, gas concentration meters, and devices for confirming gas leakage by images. By installing gas detection equipment 9 in each of the units 1, 2, 3, and 8, the location of a gas leak can be identified early, and damage caused by the gas leak can be minimized.

[0050] It is preferable to select a lightweight material for the plate material forming the bulkhead housing of fuel valve train unit 8. In addition, it is preferable that the bulkhead housing of fuel valve train unit 8 has a structure in which the side panels are removable so as to provide openings for maintenance of each of the housed fuel valve trains.

[0051] Also in this embodiment, the capacity of ventilation device 4e is reduced and air is exhausted through a duct to the vent mast outside the fuel adjustment chamber 6, so that it is possible to reduce the plate thickness of the partition wall surrounding the fuel adjustment chamber 6. Also in this embodiment, each fuel valve train in fuel valve train unit 8 can be moved to maintenance space 5 by a crane, thereby enabling maintenance work to be performed on each fuel valve train.

[0052] In this embodiment too, by housing each fuel valve train and all of the associated equipment in a bulkhead housing and configuring them as a unit, the time required for piping and wiring work can be reduced, and the time required for installation work within the fuel adjustment chamber can also be reduced.

[0053] Also in this embodiment, by housing each fuel valve train and all of the ancillary equipment in a bulkhead housing and configuring them as a unit, the number of locations that need to be checked for piping leaks at the ship construction yard is reduced and the time required for airtight testing is shortened.

[0054] Furthermore, in this embodiment as well, by housing each fuel valve train and all of the auxiliary equipment in a bulkhead housing to configure them as a unit, it is possible to optimize power equipment such as pumps, taking into account the effects of pressure loss in piping, etc.

[0055] Furthermore, in this embodiment, by housing each fuel valve train and all of the associated equipment in a bulkhead housing to configure them as a unit, the amount of ventilation gas required can be reduced, even if the fuel for the ship emits toxic gases such as liquefied ammonia, and the flow rate to the abatement device can be reduced.

[0056] In addition, each fuel valve train and a set of auxiliary equipment may be unitized as described above and installed in the engine room instead of the fuel adjustment room.

[0057] FIG. 3 is a plan view showing still another example of ship equipment constructed by the construction method according to the embodiment of the present invention.

[0058] The ship equipment constructed using the construction method of this embodiment may be prepared in advance on land as a single fuel adjustment unit 7, which is a component part of the fuel supply system, including a ship fuel supply pump, a heat exchanger, and a buffer tank that constitute the fuel supply system to be installed in the fuel adjustment chamber 6, as shown in Figure 3. In this embodiment, the explanations regarding the fuel supply pump, the heat exchanger, and the buffer tank are the same as those in the above-described embodiment (FIG. 1), and are hereby incorporated by reference.

[0059] The fuel adjustment unit 7, which houses each device, is composed of a pump for supplying ship fuel to the engine, a heat exchanger for vaporizing or adjusting the temperature of the fuel, and a buffer tank for storing fuel, all housed in a bulkhead housing.

[0060] The hydraulic piping and control wiring to the pump, the fuel supply piping to the pump, the fuel discharge piping from the pump, the piping and control wiring to the heat exchanger, the fuel supply piping to the heat exchanger, the fuel discharge piping from the heat exchanger, the supply piping to the buffer tank, and the discharge piping from the buffer tank are pulled out to the outside of the bulkhead housing.

[0061] It is preferable to install a ventilation device 4d in the bulkhead housing that houses each device in the fuel adjustment unit 7 and exhaust air through a duct (not shown) to a vent mast outside the fuel adjustment chamber 6. By providing the ventilation device 4d in the fuel adjustment unit 7, the capacity of the ventilation device 4d can be reduced. The ventilation device 4d may be any of various types of ventilation devices, such as a ventilation fan that sucks air out of the partition wall housing, or a blower that sends air into the partition wall housing.

[0062] In this embodiment, it is also preferable to install a device 9 for detecting gas vaporized due to fuel leakage near the ventilation device 4d in the fuel adjustment unit 7. As described above, the device 9 for detecting gas vaporized due to fuel leakage may be any of various types of gas detectors, a gas concentration meter, or a device for confirming gas leakage by image. By installing gas detection device 9 inside fuel adjustment unit 7, the location of the gas leak can be identified early, and damage caused by the gas leak can be minimized.

[0063] Moreover, the bulkhead housing of the fuel adjustment unit 7 preferably has a structure in which the side panels are removable so as to provide openings for maintenance of the housed devices.

[0064] Next, the fuel conditioning unit 7 is installed in the fuel conditioning room 6 on the ship at the ship building yard.

[0065] Piping and wiring are connected from the fuel adjustment unit 7 to the outside of the fuel adjustment chamber 6 inside the fuel adjustment chamber 6. In this embodiment, the capacity of the ventilation device 4d is reduced and air is exhausted through a duct to the vent mast outside the fuel adjustment chamber 6, so the plate thickness of the partition wall surrounding the fuel adjustment chamber 6 can be made thin.

[0066] The maintenance space 5 and the passageway are preferably provided inside the fuel adjustment chamber 6 and outside the fuel adjustment unit 7. A crane is installed on the ceiling of the fuel adjustment chamber 6, and any of the devices in the fuel adjustment unit 7 can be moved to the maintenance space 5 by the crane, thereby enabling maintenance work to be performed on the devices in the fuel adjustment unit 7.

[0067] In this embodiment, by storing the equipment for supplying fuel to the ship and other equipment in a bulkhead box and configuring them as a unit, the time required for piping and wiring work can be reduced, and the time required for installation work within the fuel adjustment room can also be reduced.

[0068] Also, in this embodiment, by storing each piece of equipment in a bulkhead housing and configuring it as a unit, the number of points that need to be checked for piping leaks at the ship construction site is reduced, the time for airtight testing can be shortened, and power equipment such as pumps can be optimized taking into account the effects of pressure loss in piping, etc., and even if the fuel for the ship emits toxic gases such as liquefied ammonia, the amount of ventilation gas required can be reduced, thereby reducing the flow rate to the abatement device.

[0069] The fuel trimming unit 7 may be configured by housing the fuel valve train provided in the fuel supply line, the fuel valve train provided in the fuel return line, and a set of auxiliary devices in a bulkhead housing, similar to the above-mentioned equipment. In this case, the piping and control wiring to each fuel valve train are drawn to the outside of the bulkhead housing, similar to the piping and control wiring to each equipment.

[0070] In the fuel adjustment chamber 6, piping and wiring are connected from each fuel valve train and a set of ancillary devices in the fuel adjustment unit 7 to the inside of the fuel adjustment chamber 6 or to the outside of the fuel adjustment chamber 6.

[0071] In this embodiment too, by housing each fuel valve train and all of the associated equipment in a bulkhead housing and configuring them as a unit, the time required for piping and wiring work can be reduced, and the time required for installation work within the fuel adjustment chamber can also be reduced.

[0072] Also, in this embodiment, by storing each fuel valve train and all of the associated equipment in a bulkhead housing and configuring them as a unit, the number of areas that need to be checked for piping leaks at the ship construction site is reduced, the time required for airtight testing can be shortened, and even if the fuel for the ship emits toxic gases such as liquefied ammonia, the amount of ventilation gas required can be reduced, thereby reducing the flow rate to the abatement device.

[0073] The fuel valve trains and associated equipment may be separated from the fuel adjustment unit and installed in the fuel adjustment room or engine room. Also, instead of being unitized, it may be installed in a fuel adjustment chamber and connected to the fuel adjustment unit, or it may be installed in the engine room and connected to the fuel adjustment unit. [Explanation of symbols]

[0074] 1 Fuel supply pump unit 2 Heat exchanger unit 3 Buffer Tank Unit 4a Ventilation equipment 4b Ventilation equipment 4c Ventilation system 4d Ventilation system 4e Ventilation equipment 5 Maintenance Space 6 Fuel adjustment room 7 Fuel adjustment unit 8. Fuel valve train unit 9. Gas detection equipment

Claims

1. A fuel supply pump unit, a heat exchanger unit, and a buffer tank unit are provided on land, and are to be installed in a fuel adjustment room of a ship in order to supply fuel for the ship to an engine. the fuel supply pump unit is configured by housing a pump that delivers fuel in a bulkhead housing, and leading hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, and a fuel discharge piping from the pump to the outside of the bulkhead housing, the heat exchanger unit is configured by housing a heat exchanger that vaporizes or adjusts the temperature of the fuel in a partition wall housing, and leading piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, and a fuel discharge piping from the heat exchanger to the outside of the partition wall housing, the buffer tank unit is configured by housing a buffer tank for storing the fuel in a bulkhead housing, and extending a supply pipe to the buffer tank and a discharge pipe from the buffer tank to the outside of the bulkhead housing, Each of the units is installed in the fuel adjustment chamber, Within the fuel adjustment chamber, piping and wiring are connected between the units to configure a fuel supply device, and piping and wiring are connected from the units to the outside of the fuel adjustment chamber. A method for constructing a ship.

2. Preparing a fuel valve train unit on shore; the fuel valve train unit is configured by housing a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line in a partition wall housing, and drawing piping and control wiring to each of the fuel valve trains to the outside of the partition wall housing, The fuel valve train unit is installed in the fuel adjustment room or the engine room, Connecting the piping and wiring between the units to configure a fuel supply system; 2. The method for constructing a ship according to claim 1.

3. The fuel is ammonia, LPG, LNG, or methanol.

3. A method for constructing a ship according to claim 1 or 2.

4. A ventilation device is installed in the bulkhead housing that houses each device in each unit.

4. The method for constructing a ship according to claim 3.

5. The bulkhead housing of each unit has a structure in which the side panels can be detached so that openings can be made for maintenance of each device housed therein.

3. A method for constructing a ship according to claim 1 or 2.

6. A maintenance space shared by each of the units is provided in the fuel adjustment chamber.

3. A method for constructing a ship according to claim 1 or 2.

7. Each of the units is provided with a device for detecting the gas leaking from the fuel.

3. A method for constructing a ship according to claim 1 or 2.

8. preparing a fuel adjustment unit on land to be installed in a fuel adjustment room of a ship to supply fuel for the ship to an engine; the fuel adjustment unit includes a pump for delivering fuel, a heat exchanger for vaporizing or adjusting the temperature of the fuel, and a buffer tank for storing the fuel housed in a bulkhead housing, and includes hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, a fuel discharge piping from the pump, piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, a fuel discharge piping from the heat exchanger, a supply piping to the buffer tank, and a discharge piping from the buffer tank, which are extended to the outside of the bulkhead housing; The fuel adjustment unit is installed in the fuel adjustment chamber, In the fuel adjustment chamber, piping and wiring are connected from the fuel adjustment unit to the outside of the fuel adjustment chamber. A method for constructing a ship.

9. The fuel adjustment unit is configured such that a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line are housed in the partition wall housing, and piping and control wiring to each of the fuel valve trains are led out to the outside of the partition wall housing.

9. A method for constructing a ship according to claim 8.

10. The fuel is ammonia, LPG, LNG, or methanol.

10. A method for constructing a ship according to claim 8 or 9.

11. A ventilation device is provided in the bulkhead housing of the fuel adjustment unit.

11. The method for constructing a ship according to claim 10.

12. The bulkhead housing of the fuel adjustment unit has a structure in which the side panels are removable so that openings can be made for maintenance of each device housed therein.

10. A method for constructing a ship according to claim 8 or 9.

13. A maintenance space is provided in the fuel adjustment chamber for performing maintenance of each device of the fuel adjustment unit outside the fuel adjustment unit.

10. A method for constructing a ship according to claim 8 or 9.

14. The fuel adjustment unit is provided with a device for detecting gas leaking from the fuel.

10. A method for constructing a ship according to claim 8 or 9.

15. a fuel supply pump unit in which a pump for delivering fuel for a ship is housed in a bulkhead housing, and hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, and a fuel discharge piping from the pump are led out to the outside of the bulkhead housing; a heat exchanger unit in which a heat exchanger for vaporizing or adjusting the temperature of the fuel is housed in a partition wall housing, and piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, and a fuel discharge piping from the heat exchanger are led out to the outside of the partition wall housing; a buffer tank unit in which a buffer tank for storing the fuel is housed in a bulkhead housing, and a supply pipe to the buffer tank and a discharge pipe from the buffer tank are led out to the outside of the bulkhead housing; A component of a fuel supply system for a ship, comprising:

16. A fuel valve train unit in which a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line are housed in a bulkhead housing, and piping and control wiring to each of the fuel valve trains are led out to the outside of the bulkhead housing.

16. A marine fuel supply system component according to claim 15, further comprising:

17. The fuel is ammonia, LPG, LNG, or methanol.

17. A component of a ship's fuel supply system according to claim 15 or 16.

18. A ventilation device is installed in the bulkhead housing that houses each device in each unit.

20. A marine fuel supply system component according to claim 17.

19. The bulkhead housing of each unit has a structure in which the side panels can be detached so that openings can be made for maintenance of each device housed therein.

17. A component of a ship's fuel supply system according to claim 15 or 16.

20. Each of the units is equipped with a device for detecting gas leaking from the fuel.

17. A component of a ship's fuel supply system according to claim 15 or 16.

21. Components of a fuel supply system for a ship, characterized in that a fuel adjustment unit includes a pump for delivering fuel, a heat exchanger for vaporizing or adjusting the temperature of the fuel, and a buffer tank for storing the fuel, which are housed in a bulkhead housing, and hydraulic piping and control wiring to the pump, a fuel supply piping to the pump, a fuel discharge piping from the pump, piping and control wiring to the heat exchanger, a fuel supply piping to the heat exchanger, a fuel discharge piping from the heat exchanger, a supply piping to the buffer tank, and a discharge piping from the buffer tank are pulled out to the outside of the bulkhead housing.

22. The fuel adjustment unit accommodates a fuel valve train provided in a fuel supply line and a fuel valve train provided in a fuel return line in the bulkhead housing, and piping and control wiring to each fuel valve train are led out to the outside of the bulkhead housing.

22. A marine fuel supply system component according to claim 21.

23. The fuel is ammonia, LPG, LNG, or methanol. Component of a ship's fuel supply system according to claim 21 or 22.

24. A ventilation device is installed in the bulkhead housing of the fuel adjustment unit.

24. A marine fuel supply system component according to claim 23.

25. The bulkhead housing of the fuel adjustment unit has a structure in which the side panels are removable so that openings can be made for maintenance of each device housed therein. Component of a ship's fuel supply system according to claim 21 or 22.

26. The fuel adjustment unit is provided with a device for detecting gas leaking from the fuel. Component of a ship's fuel supply system according to claim 21 or 22.

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