WO2019008923A1 - Navire - Google Patents

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Publication number
WO2019008923A1
WO2019008923A1 PCT/JP2018/019409 JP2018019409W WO2019008923A1 WO 2019008923 A1 WO2019008923 A1 WO 2019008923A1 JP 2018019409 W JP2018019409 W JP 2018019409W WO 2019008923 A1 WO2019008923 A1 WO 2019008923A1
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WO
WIPO (PCT)
Prior art keywords
fuel
shutoff valve
lpg
tank
line
Prior art date
Application number
PCT/JP2018/019409
Other languages
English (en)
Japanese (ja)
Inventor
義浩 岡田
和也 萩原
輝久 古賀
雄輝 宍粟
岳夫 宇井
俊宏 ▲高▼木
宏之 武田
尚子 印藤
Original Assignee
川崎重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Priority to SG11201913142XA priority Critical patent/SG11201913142XA/en
Priority to KR1020207002021A priority patent/KR102330773B1/ko
Priority to CN201880044702.6A priority patent/CN110831850B/zh
Publication of WO2019008923A1 publication Critical patent/WO2019008923A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/14—Use of propulsion power plant or units on vessels the vessels being motor-driven relating to internal-combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
    • F02M31/125—Fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/066—Fluid distribution for feeding engines for propulsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels

Definitions

  • the present invention relates to a ship including a propulsion engine fueled by LPG.
  • the fuel for the propulsion engine is generally a fuel oil such as heavy oil or LNG (Liquefied Natural Gas).
  • LNG Liquefied Natural Gas
  • LPG Liquefied Petroleum Gas
  • Patent Document 1 discloses a ship for supplying LPG in liquid form from a fuel tank to a propulsion engine.
  • LPG is used as a fuel
  • an object of this invention is to provide the ship which can purge easily the part which exists in the engine room in the fuel supply line through which LPG flows, and a fuel collection
  • the ship according to the present invention is provided with a fuel tank storing LPG, a propulsion engine disposed in an engine room using LPG as a fuel, and LPG supplied from the fuel tank to the engine
  • a fuel supply line provided with a first shutoff valve outside the engine compartment, and a fuel shutoff valve provided outside the engine compartment for recovering unused LPG from the engine to the fuel tank
  • the engine room by a line, a first purge line for supplying an inert gas to the fuel recovery line between the engine compartment and the second shutoff valve, and a second purge line provided with a third shutoff valve;
  • a purge tank connected to the fuel supply line with the first shutoff valve, the second purge line and the purge tank Than the portion present in the engine room in the engine lies in the room portion and said fuel return line in the supply line is disposed below, and wherein the.
  • the second purge line and the purge tank are disposed below the portions of the fuel supply line and the fuel recovery line existing in the engine room. Therefore, when the fuel supply line and the portion in the engine room in the fuel recovery line are purged with the inert gas, the first shutoff valve and the second shutoff valve are closed to open the third shutoff valve, and the first purge If inert gas is supplied to the fuel recovery line through the line, gravity can be used to expel the LPG from the fuel supply line into the purge tank. Therefore, the fuel supply line through which the LPG flows and the portion of the fuel recovery line existing in the engine room can be easily purged with the inert gas.
  • the portion of the fuel supply line existing in the engine room may be an upward slope toward the engine, and the portion of the fuel recovery line existing in the engine room may be a downward slope toward the engine . According to this configuration, the fuel supply line and the portion of the fuel recovery line existing in the engine room can be more easily purged with the inert gas.
  • the above ship further includes a heater for heating LPG supplied to the fuel tank to 0 ° C. or higher, and the fuel tank holds the LPG at a pressure higher than the saturated vapor pressure at the temperature in the fuel tank.
  • the fuel tank and the pipes constituting the fuel supply line and the fuel recovery line can be formed not from low-temperature steel such as nickel-based alloy but from general steel, so cost can be reduced. .
  • the fuel recovery line may be provided with a cooler for cooling the LPG to a predetermined temperature. According to this configuration, it is possible to suppress flash (rapid vaporization) of the recovered LPG in the fuel tank.
  • the fuel recovery line is provided with a pressure regulating valve, which assumes the pressure of the LPG upstream of the pressure regulating valve at the saturated steam pressure or the temperature of the LPG at the outlet of the engine. It may be adjusted to be higher than the saturated vapor pressure at the maximum temperature. According to this configuration, it is possible to prevent the LPG from flushing in the fuel recovery line.
  • the fuel tank may include a storage tank into which LPG is introduced, and a service tank connected to the engine by the fuel supply line and the fuel recovery line, to which the LPG is supplied from the storage tank.
  • the fuel tank can be divided into a storage tank for introducing LPG and a service tank for circulating LPG.
  • An inert gas may be introduced into the service tank.
  • the holding pressure of the service tank can be made higher than the saturated steam pressure, and it becomes easy to secure the necessary effective suction head (NPSHr) of the pump that supplies LPG to the engine.
  • NPSHr necessary effective suction head
  • the purge tank is connected to the fuel tank by a return line provided with a fourth shut-off valve, and the above-mentioned vessel includes the first shut-off valve, the second shut-off valve, the third shut-off valve, and the third (4)
  • the control device for controlling the shutoff valve which is used to circulate the LPG between the fuel tank and the engine through the fuel supply line and the fuel recovery line, the third shutoff valve
  • the first shut-off valve and the second shut-off valve With closing, the first shut-off valve and the second shut-off valve are opened, and a purge operation is performed to purge the portion existing in the engine room in the fuel supply line and the portion existing in the engine room in the fuel recovery line
  • the pressure of the inert gas can be used to return the LPG accumulated in the purge tank to the fuel tank through the return line.
  • the above ship further includes a pressure gauge for detecting the pressure of the purge tank, and a control device for controlling the first shutoff valve, the second shutoff valve, and the third shutoff valve, and the control device
  • a pressure gauge for detecting the pressure of the purge tank
  • a control device for controlling the first shutoff valve, the second shutoff valve, and the third shutoff valve, and the control device
  • the fuel supply line through which LPG flows and the portion of the fuel recovery line existing in the engine room can be easily purged with inert gas.
  • FIG. 1 shows a ship 1 according to an embodiment of the present invention.
  • the ship 1 includes a propulsion engine 12 that uses LPG as a fuel, and a fuel tank 2 that stores LPG.
  • the main component of LPG may be propane (propane gas) or butane (butane gas).
  • an engine room 11, a relatively narrow first equipment room 14, and a relatively wide second equipment room 15 are formed.
  • the propulsion engine 12 is disposed in the engine room 11. Further, in the engine room 11, a boiler 13 is also disposed, which burns PG gasified by LPG.
  • the propulsion engine 12 is a diesel cycle or Otto cycle reciprocating engine.
  • the second device room 15 does not necessarily have to be a sealed space, and may be an open space (open space).
  • the fuel tank 2 has a relatively large volume of storage tank 21 disposed outside all the rooms 11, 14, 15 and a relatively small volume disposed in the second equipment room 15.
  • the service tank 22 of FIG. The storage tank 21 and the service tank 22 are connected to each other by a relay line 26.
  • the LPG is introduced into the storage tank 21 from the LPG supply source through the fuel introduction line 23.
  • the LPG supply source may be a cargo tank mounted on the ship 1, or may be an LPG supply facility on land or an LPG fuel supply ship.
  • the storage tank 21 is not provided with a device for adjusting the temperature, and the temperature of the storage tank 21 changes in accordance with the atmospheric temperature.
  • LPG introduced from an LPG source is often at about -42 ° C. Therefore, the fuel introduction line 23 is provided with a heater 24 for heating LPG to 0 ° C. or higher. Then, the storage tank 21 holds the LPG at a pressure higher than the saturated vapor pressure at the temperature in the storage tank 21.
  • the heater 24 is unnecessary. if the LPG supply facility on the land that is the LPG supply source and the LPG fuel supply ship are equipped with a heater, and the temperature of the LPG delivered to the ship 1 is 0 ° C. or higher, the heater 24 is unnecessary. .
  • the holding pressure of the storage tank 21 refers to the pressure of the gas phase in the storage tank 21 (the holding pressure of the service tank 22 described later is the same). If no gas other than PG is mixed in the storage tank 21, the holding pressure of the storage tank 21 becomes equal to the saturated vapor pressure of the LPG.
  • the holding pressure (saturated vapor pressure) of the storage tank 21 is about 1.0 MPa in absolute pressure.
  • the expression of pressure is absolute pressure unless otherwise specified. Since the saturated vapor pressure of LPG is about 1.8 MPa at 50 ° C., the storage tank 21 is configured to withstand up to, for example, 1.9 MPa.
  • a pump 25 is installed inside the storage tank 21.
  • the number of pumps 25 may be one or more.
  • the upstream end of the relay line 26 described above is connected to the pump 25. Further, the downstream end of the relay line 26 opens in the service tank 22. Then, the LPG is supplied from the storage tank 21 to the service tank 22 through the relay line 26 by the pump 25. However, the pump 25 may be provided in the middle of the relay line 26 outside the storage tank 21.
  • the service tank 22 is not provided with a device for adjusting the temperature, and the temperature of the service tank 22 changes following the atmospheric temperature.
  • the service tank 22 holds the LPG at a pressure higher than the saturated vapor pressure at the temperature in the service tank 22.
  • the service tank 22 is connected to an inert gas supply source (not shown) by the inert gas introduction line 54.
  • the inert gas supply source is disposed, for example, in the engine room 11.
  • the inert gas for example, nitrogen
  • the holding pressure of the service tank 22 becomes higher than the saturated vapor pressure.
  • the holding pressure of the service tank 22 is equal to the saturated vapor pressure of LPG.
  • the temperature of the service tank 22 may be higher than the atmospheric temperature.
  • the holding pressure (saturated vapor pressure) of the service tank 22 is about 1.45 MPa.
  • the service tank 22 is configured to withstand, for example, 2.0 MPa.
  • a shutoff valve 55 and a pressure control valve 56 are provided in the inert gas introduction line 54 sequentially from the upstream side.
  • the pressure of the inert gas source described above is 3.0 MPa.
  • the shutoff valve 55 and the pressure regulating valve 56 are controlled by the controller 8.
  • the control device 8 is, for example, a computer having a memory such as a ROM or a RAM and a CPU, and a program stored in the ROM is executed by the CPU.
  • the control device 8 is electrically connected to a pressure gauge 91 that detects the pressure (holding pressure) of the gas phase in the service tank 22. Then, the control device 8 controls the shutoff valve 55 and the pressure adjustment valve 56 so that the pressure detected by the pressure gauge 91 does not fall below the lower limit of the allowable range.
  • the service tank 22 is connected to the above-described boiler 13 by a combustion line 73.
  • the upstream end of the combustion line 73 is connected to the top of the service tank 22.
  • a pressure control valve 74 and a heater 75 are provided in this order from the upstream side.
  • the heater 75 heats the mixed gas of the vaporized PG and the inert gas to a temperature suitable for combustion in the boiler 13.
  • the pressure control valve 74 is controlled by the controller 8.
  • the controller 8 controls the pressure control valve 74 so that the pressure detected by the pressure gauge 91 does not exceed the upper limit of the allowable range.
  • the combustion line 73 is also provided with a pressure control valve for reducing the pressure of the mixed gas supplied to the boiler 13 to 1.0 MPa or less.
  • the service tank 22 is connected to the propulsion engine 12 by a fuel supply line 31 and a fuel recovery line 41. That is, LPG is supplied from the service tank 22 to the engine 12 through the fuel supply line 31, and unused LPG is recovered from the engine 12 to the service tank 22 through the fuel recovery line 41. In other words, LPG circulates between the service tank 22 and the engine 12 through the fuel supply line 31 and the fuel recovery line 41.
  • the upstream end of the fuel supply line 31 is connected to the lower part of the service tank 22.
  • a portion (hereinafter referred to as an extended portion in the engine room) 31 a in the engine room 11 of the fuel supply line 31 has an upward slope toward the engine 12.
  • the fuel supply line 31 is provided with a pump 32, a heater 33, and a shutoff valve 34 (corresponding to a first shutoff valve of the present invention) sequentially from the upstream side.
  • These devices 32 to 34 are disposed outside the engine room 11. More specifically, the pump 32 and the heater 33 are disposed in the second equipment room 15, and the shutoff valve 34 is disposed in the first equipment room 14.
  • the heater 33 heats the LPG to the required temperature (for example, 45 ° C.) of the engine 12.
  • the shutoff valve 34 is controlled by the controller 8. The control of the shutoff valve 34 will be described in detail later.
  • the downstream end of the fuel recovery line 41 opens in the service tank 22.
  • a portion (hereinafter referred to as an in-engine-room extended portion) 41 a existing in the engine room 11 in the fuel recovery line 41 has a downward slope toward the engine 12.
  • the first pressure regulating valve 42, the shutoff valve 43 (corresponding to the second shutoff valve of the present invention), the cooler 44 and the second pressure regulation valve 45 (the pressure regulation of the present invention) (Equivalent to a valve) is provided.
  • These devices 42 to 45 are disposed outside the engine room 11. More specifically, the first pressure regulating valve 42 and the shutoff valve 43 are disposed in the first equipment room 14, and the cooler 44 and the second pressure regulating valve 45 are disposed in the second equipment room 15.
  • the cooler 44 cools the LPG to a predetermined temperature (for example, 40 ° C.).
  • the first pressure regulating valve 42, the shutoff valve 43 and the second pressure regulating valve 45 are controlled by the controller 8.
  • the control of the shutoff valve 43 will be described in detail later.
  • the control device 8 is electrically connected to a pressure gauge 92 that detects the pressure of the LPG at the inlet of the engine 12 and a pressure gauge 93 that detects the pressure of the LPG upstream of the second pressure regulating valve 45.
  • the pressure gauge 93 is located downstream of the cooler 44, but the pressure gauge 93 may be located upstream of the cooler 44.
  • the controller 8 controls the first pressure regulating valve 42 such that the pressure detected by the pressure gauge 92 becomes the required pressure of the engine 12.
  • the second pressure regulating valve 45 the temperature of the LPG rises a little as the LPG passes through the engine 12 (for example, 55 ° C.). Therefore, as a setting value for control of the second pressure adjusting valve 45, a setting value to be a saturated vapor pressure at the assumed maximum temperature is determined (for example, 2.0 MPa), and the control device 8 The second pressure control valve 45 is controlled such that the pressure detected at step S.2 is higher than the set value.
  • the controller 8 is electrically connected to a thermometer 81 that detects the temperature of the LPG at the outlet of the engine 12, and the pressure detected by the pressure gauge 93 is the temperature detected by the thermometer 81.
  • the second pressure control valve 45 may be controlled to be higher than the saturated steam pressure of
  • the portion between the heater 33 and the first shutoff valve 34 in the fuel supply line 31 is connected to the portion between the shutoff valve 43 and the cooler 44 in the fuel recovery line 41 by the bypass line 16. ing.
  • the bypass line 16 is provided with a flow control valve 17.
  • the flow control valve 17 is controlled by the controller 8 such that LPG passing through the engine 12 has a predetermined flow rate.
  • the ship 1 includes a first purge line 51 as a configuration for purging the in-engine room extension 31a of the fuel supply line 31 and the in-engine room extension 41a of the fuel recovery line 41 with an inert gas.
  • a second purge line 61 and a purge tank 6 are provided.
  • the first purge line 51 connects a portion between the engine compartment 11 and the first pressure control valve 42 in the fuel recovery line 41 with the inert gas supply source described above. That is, the inert gas is supplied to the fuel recovery line 41 between the engine compartment 11 and the first pressure control valve 42 through the first purge line 51.
  • the first purge line 51 is provided with a shutoff valve 52 and a flow control device in order from the upstream side.
  • the flow control device is the flow control valve 53 in the present embodiment, but may be an orifice or the like.
  • the second purge line 61 connects a portion of the fuel supply line 31 between the shutoff valve 34 and the engine compartment 11 with the purge tank 6.
  • the downstream end of the second purge line 61 is open in the purge tank 6.
  • the second purge line 61 is provided with a shutoff valve 62 (corresponding to a third shutoff valve of the present invention).
  • the second purge line 61 and the purge tank 6 are disposed below the in-engine room extension 31a of the fuel supply line 31 and the in-room extension 41a of the fuel recovery line 41 in the first equipment room 14. ing.
  • the purge tank 6 is connected to the service tank 22 by a return line 63 and is connected to the above-described boiler 13 by a combustion line 71.
  • the return line 63 is for returning the liquid LPG to the service tank 22, and the combustion line 71 is for introducing a mixed gas of the vaporized PG and the inert gas to the boiler 13.
  • the upstream end of the return line 63 is open in the purge tank 6, and the downstream end of the return line 63 is open in the service tank 22.
  • the return line 63 is provided with a shutoff valve 64 (corresponding to a fourth shutoff valve of the present invention).
  • the upstream end of the combustion line 71 is connected to the top of the purge tank 6.
  • the combustion line 71 is provided with a shutoff valve 72.
  • the combustion line 71 is also provided with a pressure control valve for reducing the pressure of the mixed gas supplied to the boiler 13 to 1.0 MPa or less.
  • shutoff valves 52, 62, 64, 72 and the flow control valve 53 described above are controlled by the controller 8.
  • control of these valves will be described including control of the shutoff valve 34 of the fuel supply line 31 and the shutoff valve 43 of the fuel recovery line 41.
  • the controller 8 When circulating LPG between the service tank 22 and the engine 12 through the fuel supply line 31 and the fuel recovery line 41, the controller 8 shuts off the shutoff valve 52 of the first purge line 51 and the second purge line 61.
  • the valve 62, the shutoff valve 64 of the return line 63, and the shutoff valve 72 of the combustion line 71 are closed, and the shutoff valve 34 of the fuel supply line 31 and the shutoff valve 43 of the fuel recovery line 41 are opened.
  • LPG circulates through the fuel supply line 31 and the fuel recovery line 41.
  • the controller 8 controls the fuel supply line 31.
  • the first shutoff valve 34 and the shutoff valve 43 of the fuel recovery line 41 are closed, and the shutoff valve 52 of the first purge line 51 and the shutoff valve 62 of the second purge line 61 are opened.
  • the shutoff valve 64 of the return line 63 and the shutoff valve 72 of the combustion line 71 remain closed.
  • the control device 8 controls the flow control valve 53 to adjust the flow rate of the inert gas.
  • the pressure of the purge tank 6 depends on the passing amount of the inert gas in the engine room extension portion 41 a of the fuel recovery line 41 and the engine room extension portion 31 a of the fuel supply line 31.
  • the control device 8 performs the purge operation. Determine that it is complete.
  • the control device 8 further The shutoff valve 52 of the first purge line 51 and the shutoff valve 62 of the second purge line 61 are kept open so that the purge tank 6 is continuously pressurized.
  • the control device 8 closes the shutoff valve 52 of the first purge line 51 and the shutoff valve 62 of the second purge line 61 and thereafter returns the return line. Open the shutoff valve 64 of 63.
  • the LPG accumulated in the purge tank 6 can be returned to the service tank 22 through the return line 63 using the pressure of the inert gas.
  • the control device 8 closes the shutoff valve 64 of the return line 63 and opens the shutoff valve 72 of the combustion line 71 to leave the PG and inert gas remaining in the purge tank 6. Mixed gas is supplied to the boiler 13.
  • the second purge line 61 and the purge tank 6 are located in the engine room extension 31 a of the fuel supply line 31 and the engine room extension 41 a of the fuel recovery line 41. Are also located below. Therefore, when purging the engine room extension part 41a of the fuel recovery line 41 and the engine compartment extension part 31a of the fuel supply line 31 with inert gas, LPG is taken from the fuel supply line 31 using gravity. The inside of the purge tank 6 can be expelled. Therefore, the in-engine room extending portion 41a of the fuel recovery line 41 and the in-engine room extending portion 31a of the fuel supply line 31 can be easily purged with the inert gas.
  • the storage tank 21, the service tank 22, the fuel supply line 31, and the fuel recovery line 41 are configured.
  • Piping can be comprised with common steel materials instead of low temperature steel materials, such as a nickel base alloy. Therefore, the cost can be reduced.
  • the cooler 44 is provided in the fuel recovery line 41, it is possible to suppress the flash (vaporization) of the recovered LPG in the service tank 22.
  • the pressure of the LPG on the upstream side of the second pressure regulating valve 45 is adjusted by the second pressure regulating valve 45 of the fuel recovery line 41 to be higher than the saturated vapor pressure at the assumed maximum temperature. Therefore, it is possible to prevent the LPG from flushing in the fuel recovery line 41 (in the present embodiment, before the LPG is cooled by the cooler 44).
  • the shutoff valve 64 may not be closed when circulating the LPG between the service tank 22 and the engine 12.
  • the fuel tank 2 was comprised with the storage tank 21 and the service tank 22, the storage tank 21 may be abbreviate
  • FIG. if it is a structure like the said embodiment, the fuel tank 2 can be divided into the storage tank 21 for LPG introduction, and the service tank 22 for LPG circulation.
  • the in-engine room extension 31a of the fuel supply line 31 does not necessarily have to be an upward slope toward the engine 12, and may be arranged on a horizontal surface.
  • the in-engine room extension portion 41a of the fuel recovery line 41 does not necessarily have to be a downward slope toward the engine 12, and may be routed on a horizontal surface.
  • the inert gas does not necessarily have to be introduced into the service tank 22, and the holding pressure of the service tank 22 may be equal to the saturated vapor pressure of the LPG.
  • the holding pressure of the service tank 22 can be made higher than the saturated steam pressure, and securing of the necessary effective suction head (NPSHr) of the pump 32 that supplies the LPG to the engine 12 Becomes easier.
  • shutoff valve 72 of the combustion line 71 may be omitted, and the pressure regulating valve (not shown) of the combustion line 71 may be fully closed until the return of the LPG from the purge tank 6 to the service tank 22 is completed.
  • the return line 63 may be omitted, and after the completion of the purge operation, the entire amount of LPG accumulated in the purge tank 6 may be supplied to the boiler 13 through the combustion line 71 while being vaporized.
  • Reference Signs List 1 ship 11 engine room 12 engine for propulsion 2 fuel tank 21 storage tank 22 service tank 24 heater 25 pump 31 fuel supply line 31a extension in engine room 34 shutoff valve (first shutoff valve) 41 fuel recovery line 41a engine compartment extension 43 shut-off valve (second shut-off valve) 51 first purge line 6 purge tank 61 second purge line 62 shutoff valve (third shutoff valve) 63 Return line 64 shutoff valve (4th shutoff valve) 8 Controller

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne un navire comprenant : un réservoir de carburant qui contient du GPL ; un moteur de propulsion qui utilise le GPL comme carburant ; une conduite d'alimentation en carburant qui alimente le moteur en GPL présent dans le réservoir de carburant et qui est dotée d'une première soupape d'arrêt ; une conduite de récupération de carburant qui collecte le GPL non utilisé dans le moteur pour le renvoyer au réservoir de carburant et qui est dotée d'une deuxième soupape d'arrêt ; une première conduite de purge qui est située entre une salle des machines et la deuxième soupape d'arrêt de façon à alimenter la conduite de récupération de carburant en gaz inerte ; et un réservoir de purge qui est raccordé à la conduite d'alimentation en carburant située entre la salle des machines et la première soupape d'arrêt par une seconde conduite de purge dotée d'une troisième soupape d'arrêt. La seconde conduite de purge et le réservoir de purge sont disposés dans la partie de la conduite d'alimentation en carburant située dans la salle des machines et au-dessous de la partie de la conduite de récupération de carburant située dans la salle des machines.
PCT/JP2018/019409 2017-07-05 2018-05-18 Navire WO2019008923A1 (fr)

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CN112696289A (zh) 2020-12-28 2021-04-23 大连船舶重工集团有限公司 一种船用液氨燃料供给及燃料回收利用系统
CN113090417B (zh) * 2021-03-29 2022-07-22 招商局重工(深圳)有限公司 一种lpg气液分离罐以及燃料控制系统
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CN114110419B (zh) * 2021-12-02 2023-08-08 江南造船(集团)有限责任公司 一种常温液态丙烷卸船系统及卸船方法
KR102634372B1 (ko) * 2021-12-03 2024-02-08 에이치디현대중공업 주식회사 암모니아 처리 시스템 및 이를 포함하는 선박
KR102651090B1 (ko) * 2021-12-29 2024-03-27 한화오션 주식회사 암모니아 연료 추진 선박의 이중관 퍼징시스템 및 그 방법
KR102651899B1 (ko) * 2021-12-29 2024-03-28 한화오션 주식회사 암모니아 연료 추진 선박의 가스 퍼징시스템 및 그 방법
JP2023123982A (ja) * 2022-02-25 2023-09-06 三菱重工業株式会社 浮体及び浮体のアンモニア処理方法

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KR20200021091A (ko) 2020-02-27
KR102330773B1 (ko) 2021-11-25
CN110831850A (zh) 2020-02-21

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