WO2018185958A1 - 浮体 - Google Patents

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Publication number
WO2018185958A1
WO2018185958A1 PCT/JP2017/037533 JP2017037533W WO2018185958A1 WO 2018185958 A1 WO2018185958 A1 WO 2018185958A1 JP 2017037533 W JP2017037533 W JP 2017037533W WO 2018185958 A1 WO2018185958 A1 WO 2018185958A1
Authority
WO
WIPO (PCT)
Prior art keywords
petroleum gas
liquefied petroleum
tank
service tank
fuel
Prior art date
Application number
PCT/JP2017/037533
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
伸 上田
石田　聡成
隆司 雲石
Original Assignee
三菱造船株式会社
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 三菱造船株式会社 filed Critical 三菱造船株式会社
Priority to KR1020197026878A priority Critical patent/KR102338967B1/ko
Priority to CN201780088546.9A priority patent/CN110431075B/zh
Publication of WO2018185958A1 publication Critical patent/WO2018185958A1/ja

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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 
    • 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
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • 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
    • 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

Definitions

  • the present invention relates to a floating body.
  • the present application claims priority based on Japanese Patent Application No. 2017-075915 filed in Japan on April 6, 2017, the contents of which are incorporated herein by reference.
  • Patent Document 1 discloses a fuel supply system for boosting liquefied natural gas so that vaporized high-pressure natural gas has a higher pressure than that in the cylinder in order to inject fuel into the cylinder of the engine that is compressed to high pressure. Is described.
  • a reliquefaction device In order to reliquefy the evaporated liquefied gas in order to suppress the increase in the internal pressure, a reliquefaction device is required.
  • a floating body such as a ship has a limited space, the provision of a reliquefaction device may affect the size of a cargo space or a residential area.
  • This invention provides the floating body which can suppress that a fuel is discharge
  • the floating body includes a fuel tank, a service tank, a main engine, a supply line, a return pipe, a pressure adjusting unit, and a pump.
  • the fuel tank stores liquefied petroleum gas in a pressurized state.
  • the service tank is supplied with the liquefied petroleum gas from the fuel tank.
  • the main machine is driven by the liquefied petroleum gas from the service tank.
  • the supply line supplies the liquefied petroleum gas in the service tank to the main machine.
  • the return pipe returns a part of the liquefied petroleum gas supplied to the main machine to the service tank.
  • the pressure adjusting unit adjusts the pressure in the service tank to be higher than the pressure in the fuel tank.
  • the pump pumps the liquefied petroleum gas from the fuel tank to the service tank.
  • the liquefied petroleum gas is pumped from the fuel tank to the service tank by the pump, and the pressure in the service tank is adjusted by the pressure adjustment unit.
  • the boiling point of petroleum gas can be increased. Therefore, when a part of the high-temperature liquefied petroleum gas supplied from the service tank to the main engine via the supply line is refluxed via the reflux pipe and flows into the service tank, evaporation can be suppressed.
  • the reflux pipe according to the first aspect includes a heat exchange part immersed in the liquefied petroleum gas in the service tank in a portion including the downstream end thereof. Also good.
  • the heat exchanging section performs heat exchange between the liquefied petroleum gas refluxed by the reflux pipe and the liquefied petroleum gas in the service tank.
  • the floating body according to the first or second aspect may include a cooling device for reducing the outer surface temperature of the service tank.
  • a cooling device for reducing the outer surface temperature of the service tank.
  • the floating body it is possible to suppress the release of fuel to the atmosphere without using a reliquefaction device.
  • FIG. 1 is a diagram showing a schematic configuration of a floating body in an embodiment of the present invention.
  • the bow-stern direction of the hull 2 is indicated by an arrow, and the bow side is “F” and the stern side is “A”, respectively.
  • a ship 1 that is a floating body in this embodiment includes a hull 2, a cargo tank 3, an engine 4, an upper structure 5, and a gas fuel tank 6.
  • the hull 2 has a pair of dredging sides 7 (only the starboard side is shown in FIG. 1), a ship bottom 8, and an upper deck 9.
  • the upper deck 9 is the entire upper deck located at the uppermost position, and is an exposed deck in the hull 2 in this embodiment.
  • a cargo hold 10 and a main engine room 11 are partitioned inside the hull 2.
  • the hull 2 includes a screw 12 and a rudder 13 below the stern 2A.
  • the cargo hold 10 is a space for accommodating the cargo tank 3.
  • a plurality (more specifically, three) of cargo holds 10 are arranged side by side from the bow 2F toward the stern 2A.
  • These cargo holds 10 are each partitioned in a bow-stern direction by a partition wall 10a.
  • the main engine room 11 is a compartment that houses the engine 4 and is disposed closer to the stern 2A than the cargo hold 10.
  • the main engine room 11 is disposed below the upper structure 5.
  • the main engine room 11 in this embodiment is formed between an inner bottom plate 14 that forms a double bottom and a deck 15 that is formed one above.
  • the cargo tank 3 is a cargo tank that can store liquefied petroleum gas.
  • One cargo tank 3 is accommodated in each of the plurality of cargo holds 10 described above. That is, a plurality of cargo tanks 3 are also arranged side by side in the fore-and-aft direction similarly to the cargo hold 10.
  • the cargo tank 3 can be stored in a state in which the volume is reduced by cooling and liquefying the liquefied petroleum gas.
  • the liquefied petroleum gas stored in these cargo tanks 3 can be used as fuel for navigating the ship 1 in distinction from the fuel for navigating the ship 1.
  • the engine 4 can be driven using liquefied petroleum gas as fuel.
  • the engine 4 rotates the screw 12 to generate thrust.
  • the engine 4 is accommodated in the main engine room 11 described above.
  • the fuel of the engine 4 is not limited to liquefied petroleum gas, but may be a combination of liquefied petroleum gas and another fuel (bi-fuel), mixing (dual fuel), or the like.
  • the engine 4 is not limited to driving the screw 12.
  • the generator may be driven by the engine 4.
  • the engine 4 can be driven using liquefied petroleum gas stored in a gas fuel tank 6.
  • the upper structure 5 is formed on the upper deck 9 and includes a bridge, a residential area, and the like.
  • the upper structure 5 is disposed at a position on the stern 2A side of the cargo hold 10 in the stern direction and above the main engine room 11.
  • the gas fuel tank 6 stores the liquefied petroleum gas that is the fuel of the engine 4 described above.
  • the gas fuel tank 6 exemplified in this embodiment is installed on the upper deck 9. More specifically, the gas fuel tank 6 is installed on the upper deck 9 above the cargo hold 10.
  • the gas fuel tank 6 is a pressurized container (pressure tank) capable of storing liquefied petroleum gas in a pressurized state. Thereby, the gas fuel tank 6 can maintain the liquefied petroleum gas in a liquid state at room temperature.
  • the case where the gas fuel tank 6 is a cylindrical pressure tank is illustrated as a so-called Type-C tank, and two cases are illustrated. It is not limited to the configuration.
  • the gas fuel tank 6 is arranged in a posture in which the longitudinal direction thereof coincides with the bow-stern direction, but is not limited to this posture.
  • FIG. 2 is a diagram showing a schematic configuration of a floating body fuel supply system according to an embodiment of the present invention.
  • the fuel supply system in this embodiment supplies liquefied petroleum gas from the gas fuel tank 6 to the engine 4 and recirculates part of the liquefied petroleum gas supplied to the engine 4.
  • the fuel supply system 200 includes a fuel transfer pipe 20, a first booster pump 21, a service tank 22, a pressure regulator 23, a fuel supply pipe 24, a second booster pump 25, A heater 26, a reflux pipe 27, a control valve 28, and a cooling device 29 are provided.
  • the fuel transfer pipe 20 is a pipe for sending the liquefied petroleum gas in the gas fuel tank 6 to the service tank 22.
  • the gas fuel tank 6 and the service tank 22 are connected by the fuel transfer pipe 20.
  • the first booster pump 21 pumps the liquefied petroleum gas in the gas fuel tank 6 to the service tank 22.
  • the liquefied petroleum gas in the gas fuel tank 6 can flow into the service tank 22.
  • a flow rate adjustment valve (not shown) for adjusting the flow rate of the liquefied petroleum gas is provided in the middle of the fuel transfer pipe 20, and the flow rate adjustment valve is adjusted so that the liquid level of the service tank 22 is maintained at a predetermined level. May be.
  • the service tank 22 temporarily stores liquefied petroleum gas that has flowed in via the fuel transfer pipe 20. Similar to the gas fuel tank 6 described above, the service tank 22 stores the liquefied petroleum gas in a pressurized state so that the liquefied petroleum gas can be maintained in a liquid state.
  • the service tank 22 may be a pressure vessel having higher pressure resistance than the gas fuel tank 6 so as to withstand the pressure of the liquefied petroleum gas boosted by the first booster pump 21.
  • the pressure adjusting unit 23 adjusts the pressure in the service tank 22 so that the pressure in the service tank 22 is higher than the pressure in the gas fuel tank 6.
  • a vent valve that vents the gas phase in the service tank 22 to the atmosphere when the pressure in the service tank 22 becomes higher than the set pressure can be used as the pressure adjusting unit 23.
  • the fuel supply pipe 24 is a pipe for supplying the liquefied petroleum gas temporarily stored in the service tank 22 to the engine 4.
  • the fuel supply pipe 24 in this embodiment is connected to a fuel pump 30 that discharges liquefied petroleum gas from the service tank 22. If the liquid level in the service tank 22 is above the engine 4 and the second booster pump 25, the fuel pump 30 may be omitted.
  • the second booster pump 25 is provided in the middle of the fuel supply pipe 24.
  • the second booster pump 25 boosts the liquefied petroleum gas in the service tank 22 (for example, boosts pressure from about 20 bar to about 50 bar).
  • the heater 26 heats the liquefied petroleum gas boosted by the second booster pump 25 to a predetermined temperature (for example, about 50 degrees Celsius).
  • the reflux pipe 27 is a pipe that returns a part of the liquefied petroleum gas supplied to the engine 4 to the service tank 22.
  • the downstream end 31 of the reflux pipe 27 opens into the liquid phase of the service tank 22. More specifically, the end portion 31 is disposed in the vicinity of the bottom surface 22a of the service tank 22, and discharges a part of the liquefied petroleum gas recirculated from the vicinity of the bottom surface 22a.
  • part of the liquefied petroleum gas means liquid liquefied petroleum gas that has not been burned in the cylinder of the engine 4.
  • the reflux pipe 27 includes a heat exchanging portion 32 in a portion including the end portion 31 on the downstream side.
  • the heat exchanging unit 32 exchanges heat between the liquefied petroleum gas refluxed by the reflux pipe 27 and the liquefied petroleum gas in the service tank 22.
  • the heat exchanging section 32 in this embodiment is formed by a pipe made of metal or the like having excellent thermal conductivity, and the liquefied petroleum gas that has been refluxed flows through the inside.
  • the heat exchange unit 32 is immersed in the liquid phase of liquefied petroleum gas in the service tank 22.
  • the heat exchanging portion 32 has a meandering or curved shape so as to ensure an area in contact with the liquid phase of the service tank 22. In this embodiment, the case where the heat exchanging part 32 is formed in a spiral shape from above to below is illustrated.
  • the pipe length of the heat exchanging section 32 is such that a part of the liquefied petroleum gas recirculated from the engine 4 can sufficiently exchange heat with the liquefied petroleum gas in the service tank 22 before being discharged from the end 31.
  • the heat exchanging unit 32 has a temperature of about 50 degrees Celsius before the liquefied petroleum gas is discharged from the end portion 31.
  • the length can be lowered.
  • a fin or the like may be formed on the outer peripheral surface of the heat exchange unit 32 to increase the surface area.
  • the end part 31 is disposed below the heat exchange part 32.
  • the control valve 28 adjusts the flow rate of the liquefied petroleum gas that is refluxed to the service tank 22 via the reflux pipe 27. In other words, the control valve 28 adjusts the pressure of the liquefied petroleum gas recirculated from the engine 4. For example, the control valve 28 may be adjusted according to the pressure in the service tank 22 or the like. In this embodiment, the control valve 28 reduces the pressure of the liquefied petroleum gas to be refluxed (for example, about 50 bar) to the allowable pressure of the liquefied petroleum gas in the service tank 22.
  • the cooling device 29 reduces the outer surface temperature of the service tank 22.
  • the cooling device 29 in this embodiment exemplifies a case where water is sprayed on the outer surface of the service tank 22 and the outer surface of the service tank 22 is cooled by the heat of vaporization. By cooling the outer surface of the service tank 22 in this manner, the temperature of the liquefied petroleum gas in the service tank 22 can be removed and the temperature can be lowered.
  • the configuration of the cooling device 29 is not limited to the above-described configuration as long as the liquefied petroleum gas in the service tank 22 can be cooled.
  • the liquefied petroleum gas is pumped from the gas fuel tank 6 to the service tank 22 by the first booster pump 21.
  • the pressure in the service tank 22 is adjusted by the pressure adjusting unit 23.
  • the boiling point of the liquefied petroleum gas in the service tank 22 can be made higher than the boiling point of the liquefied petroleum gas in the gas fuel tank 6. Therefore, when a part of the high-temperature liquefied petroleum gas supplied from the service tank 22 to the engine 4 via the fuel supply pipe 24 is recirculated and flows into the service tank 22, it is possible to suppress evaporation of the liquefied petroleum gas. . As a result, it is possible to suppress the release of fuel to the atmosphere without using a reliquefaction device.
  • the reflux pipe 27 includes the heat exchanging section 32, the high-temperature liquefied petroleum gas refluxed from the engine 4 and the liquefied petroleum gas in the service tank 22 can be heat-exchanged. Therefore, the temperature of the liquefied petroleum gas recirculated from the engine 4 can be reduced and merged with the liquefied petroleum gas in the service tank 22. As a result, evaporation of the liquefied petroleum gas that has been refluxed can be further suppressed.
  • the temperature of the liquefied petroleum gas in the service tank 22 that exchanges heat with the high-temperature liquefied petroleum gas refluxed from the engine 4 can be lowered. Therefore, it is possible to suppress the liquefied petroleum gas in the service tank 22 from being overheated and being vaporized.
  • the present invention is not limited to the configuration of the above-described embodiment, and the design can be changed without departing from the gist thereof.
  • the gas fuel tank 6 is arranged on the upper deck 9 .
  • the gas fuel tank 6 is not limited to this arrangement, and may be arranged below the upper deck 9. Good.
  • the ship 1 was demonstrated to an example as a floating body, a floating body is not restricted to a ship.
  • the floating body may be a floating body for power generation, FSRU (Floating Storage and Re-gasification Unit), or the like.
  • the heat exchange unit 32 is provided in the reflux pipe 27 .
  • the configuration is not limited thereto.
  • the service tank 22 is arranged away from the engine 4 and the temperature of the liquefied petroleum gas to be refluxed is reduced to the same level as the heat exchange unit 32 described above by natural heat dissipation before reaching the service tank 22. It may be omitted if possible.
  • the cooling device 29 may be omitted.
  • a heat radiating fin or the like may be provided on the surface of the service tank 22.
  • This invention can be applied to floating bodies. According to this invention, it can suppress that a fuel is discharge

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
PCT/JP2017/037533 2017-04-06 2017-10-17 浮体 WO2018185958A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020197026878A KR102338967B1 (ko) 2017-04-06 2017-10-17 부체
CN201780088546.9A CN110431075B (zh) 2017-04-06 2017-10-17 浮体

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017075915A JP6609865B2 (ja) 2017-04-06 2017-04-06 浮体
JP2017-075915 2017-04-06

Publications (1)

Publication Number Publication Date
WO2018185958A1 true WO2018185958A1 (ja) 2018-10-11

Family

ID=63713434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/037533 WO2018185958A1 (ja) 2017-04-06 2017-10-17 浮体

Country Status (4)

Country Link
JP (1) JP6609865B2 (zh)
KR (1) KR102338967B1 (zh)
CN (1) CN110431075B (zh)
WO (1) WO2018185958A1 (zh)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP4086157A4 (en) * 2020-11-16 2023-10-18 Imabari Shipbuilding Co., Ltd. PIPE SYSTEM, DISCHARGE METHOD AND CONTROL DEVICE

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Publication number Priority date Publication date Assignee Title
JP7031543B2 (ja) 2018-09-21 2022-03-08 株式会社Ｊｖｃケンウッド 処理装置、処理方法、再生方法、及びプログラム
JP7312991B2 (ja) * 2020-07-06 2023-07-24 協同商船株式会社 船舶
WO2023089770A1 (ja) * 2021-11-19 2023-05-25 株式会社フコク 電池モジュール用弾性体

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Publication number Priority date Publication date Assignee Title
EP4086157A4 (en) * 2020-11-16 2023-10-18 Imabari Shipbuilding Co., Ltd. PIPE SYSTEM, DISCHARGE METHOD AND CONTROL DEVICE

Also Published As

Publication number Publication date
KR102338967B1 (ko) 2021-12-13
CN110431075A (zh) 2019-11-08
CN110431075B (zh) 2021-12-17
JP2018176868A (ja) 2018-11-15
KR20190116426A (ko) 2019-10-14
JP6609865B2 (ja) 2019-11-27

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