WO2018078720A1 - ガス配管システムおよびそれを搭載した船舶 - Google Patents
ガス配管システムおよびそれを搭載した船舶 Download PDFInfo
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- WO2018078720A1 WO2018078720A1 PCT/JP2016/081581 JP2016081581W WO2018078720A1 WO 2018078720 A1 WO2018078720 A1 WO 2018078720A1 JP 2016081581 W JP2016081581 W JP 2016081581W WO 2018078720 A1 WO2018078720 A1 WO 2018078720A1
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- WIPO (PCT)
- Prior art keywords
- duct
- gas
- vent
- pipe
- outer cylinder
- Prior art date
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Classifications
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- 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
- F02M21/0293—Safety devices; Fail-safe measures
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- 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
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- 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
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- 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
-
- 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
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- 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
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- 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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
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- 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
- F17C2205/0352—Pipes
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- 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
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- 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 gas piping system for a ship, and more particularly, to a gas piping system for a ship equipped with a diesel engine as a main engine or an auxiliary machine.
- vent gas means the gas emitted when the gas fuel which remains in a diesel engine and piping is discharged when the gas operation of a diesel engine is stopped. This point is synonymous throughout this specification.
- the gas fuel supplied to the diesel engine used as the main engine has a high pressure of 30 MPa, for example, so that very small pipe cracks due to ship vibration, shaking (rolling and pitching) and aging deterioration, etc. Even when the packing is deteriorated, there is a risk of gas explosion and fire due to the ejection of high-pressure gas fuel. Therefore, in order to supply gas fuel to a diesel engine safely and stably, it is necessary to provide a monitoring system such as a pressure / temperature measurement sensor and a gas concentration detection sensor.
- the present invention has been made to solve the above problems, and reliably prevents leakage of gas fuel and vent gas into the engine room against damage to piping for supplying gas fuel and discharging vent gas.
- a piping system and a gas piping system that can easily and reliably perform inspection, adjustment, and replacement over a long period of time, such as a monitoring system for monitoring leakage of gas attached to the piping, etc., and a ship equipped with the same I will provide a.
- the present invention relates to a diesel engine having a double-pipe structure supply pipe consisting of a supply inner cylinder and a supply outer cylinder, and a double-pipe structure vent pipe consisting of a vent inner cylinder and a vent outer cylinder.
- It is a gas piping system for supplying gas fuel to a marine diesel engine mounted as a main engine or an auxiliary machine.
- the gas piping system is for supplying gas fuel from a fuel tank storing gas fuel to a diesel engine supply inner cylinder, and for supplying vent gas from the diesel engine vent inner cylinder to the outside of the ship engine room.
- a vent pipe, a first duct covering the supply pipe in the engine room, and a second duct covering the vent pipe in the engine room are provided.
- the supply outer cylinder and the vent outer cylinder extend to the inside of the first duct or the second duct, and a rupturable plate is provided at the end of the supply outer cylinder in the first duct or the second duct. ing.
- the gas piping system of the present invention includes a supply pipe for sending gas fuel from a fuel tank to a diesel engine in a ship engine room where leakage of gas fuel is not allowed, and a vent pipe for sending vent gas from the diesel engine to the outside of the engine room.
- a supply pipe for sending gas fuel from a fuel tank to a diesel engine in a ship engine room where leakage of gas fuel is not allowed and a vent pipe for sending vent gas from the diesel engine to the outside of the engine room.
- the first duct and the second duct are covered by the first duct and the second duct, respectively. Even if the supply pipe and the vent pipe are covered by covering the supply pipe and the vent pipe through which the gas fuel and the vent gas pass by the first duct and the second duct in this way, the supply pipe is provided. Further, the gas leaked from the vent pipe remains in the first duct and the second duct, and it is possible to prevent the gaseous fuel and the vent gas from leaking into the engine room.
- a person can enter the first duct and the second duct configured as a wide space.
- a monitoring system for monitoring leakage of gas fuel and vent gas, and control valves for controlling the gas flow of each pipe, which are attached to the piping, supply piping and vent piping Inspection and maintenance can be performed easily.
- a supply pipe and a vent pipe extending in a double pipe structure extend from the diesel engine, but at the end of the supply outer cylinder of the supply pipe, there is a rupture disc in the first duct or the second duct. Is installed.
- the gas fuel leaks.
- Leakage gas that instantaneously becomes high pressure in the outer cylinder of the pipe, in the outer cylinder for supplying the supply pipe, or in the outer cylinder for venting of the vent pipe ruptures the rupture plate and enters the first duct or the second duct. Can escape to.
- the leakage gas refers to a gas in which gas fuel and vent gas leak from the supply pipe and the vent pipe. This point is synonymous throughout this specification.
- an exhaust pipe communicates between the rupturable plate of the supply outer cylinder and the diesel engine, and the gas in the supply outer cylinder is connected to the tip of the exhaust pipe.
- An exhaust fan for the outer cylinder to be flowed is attached.
- the first duct and the second duct communicate with each other through the communication hole on one end side, and one of the first duct and the second duct is connected to the other end side.
- a duct vent hole communicating with the outside is provided, and the other of the first duct and the second duct includes a duct exhaust fan that causes the gas in the first duct and the second duct to flow on the other end side.
- the leaked gas leaked into the first duct and the second duct due to damage to the supply pipe and the vent pipe can be sucked out by the duct exhaust fan.
- the leaked gas can be quickly released in a section where there is no problem even if the gas outside the engine room is released.
- the ship according to the present invention is equipped with the above gas piping system.
- the present invention it is possible to reliably prevent the gas fuel and the vent gas from leaking into the engine room against damage to the piping for supplying the gas fuel and discharging the vent gas, and to attach the piping to the piping. Inspection, adjustment, and replacement of a monitoring system for monitoring gas leaks can be easily and reliably performed over a long period of time.
- FIG. 2 It is a block diagram which shows one Embodiment of the ship of this invention. It is a lineblock diagram showing one embodiment of a gas piping system of the present invention. It is sectional drawing of the 1st duct of FIG. 2, and a 2nd duct.
- the ship 1 of the present invention has a diesel engine 3 mounted in the engine room 2 as an auxiliary machine used as a propulsion main engine or a power generation engine. Further, the ship 1 is equipped with a fuel tank 5 that stores gas fuel to be supplied to the diesel engine 3 in a liquefied state inside a hull 4 outside the engine room 2. Further, the ship 1 is provided with the gas piping system 10 of the present invention for sending gas fuel from the fuel tank 5 to the diesel engine 3 and for sending vent gas from the diesel engine 3 to the outside of the engine room 2.
- the fuel tank 5 includes a cargo tank on which liquefied gas fuel for cargo is mounted and a driving fuel tank mounted separately from the cargo for driving the diesel engine 3.
- the ship 1 does not necessarily need to be equipped with both a cargo tank and a driving fuel tank, and it is sufficient that at least one of them is mounted.
- liquefied gas fuel stored in the fuel tank 5 for example, liquefied natural gas can be used.
- the liquefied gas fuel is pressurized by a gas fuel supply device 7 such as a pump or a compressor provided in the hull 4 and is sent to the diesel engine 3 via the gas piping system 10 in a vaporized state.
- a gas fuel supply device 7 such as a pump or a compressor provided in the hull 4 and is sent to the diesel engine 3 via the gas piping system 10 in a vaporized state.
- any known pump or compressor that can increase the pressure to the pressure required by the diesel engine 3 is used.
- the internal piping of the diesel engine 3 has a basic structure, a double pipe structure including an inner cylinder and an outer cylinder.
- a supply pipe 31 that communicates with the piping inside the diesel engine 3 and extends to the outside of the diesel engine 3 and supplies gas fuel to the diesel engine 3, and a vent pipe 32 that discharges the vent gas from the diesel engine 3, It has a double tube structure.
- the supply pipe 31 includes a supply inner cylinder 311 and a supply outer cylinder 312, and the vent pipe 32 includes a vent inner cylinder 321 and a vent outer cylinder 322.
- a supply inner cylinder 311 and a vent inner cylinder 321 communicate with both ends of the inner cylinder of the internal pipe of the diesel engine 3, and a supply outer cylinder 312 and a vent are connected to both ends of the outer cylinder of the diesel engine 3 internal pipe.
- the outer cylinders 322 communicate with each other.
- the inner cylinder of the diesel engine 3 internal pipe, the supply inner cylinder 311, and the vent inner cylinder 321 are collectively referred to as an engine inner cylinder
- the diesel engine 3 internal pipe outer cylinder the supply outer cylinder 312
- the vent outer cylinder 322 is collectively referred to as an engine outer cylinder.
- a heavy oil / gas (LNG) -fired two-cycle diesel engine is used as the diesel engine 3.
- the heavy oil / gas-fired two-cycle diesel engine is a dual fuel diesel engine that can use both heavy oil fuel and gas fuel, particularly liquefied natural gas (LNG) as fuel.
- LNG liquefied natural gas
- This heavy oil / gas-fired two-cycle diesel engine can perform an operation using only heavy oil as fuel, an operation using only gas as fuel, and an operation using both heavy oil and gas as fuel. Therefore, the diesel engine 3 is also provided with a system (not shown) for supplying heavy oil, but only the system (gas piping system) 10 for supplying gas will be described below.
- the gas pipe system 10 includes a supply pipe 21 for sending gas fuel from the fuel tank 5 storing gas fuel to the diesel engine 3, and a vent pipe 22 for sending vent gas from the diesel engine 3 to the outside of the engine room 2. It has.
- the supply pipe 21 is provided so as to communicate the fuel tank 5 and the supply inner cylinder 311 of the diesel engine 3.
- the vent pipe 22 is provided so as to extend from the vent inner cylinder 321 of the diesel engine 3 to the outside of the engine room 2.
- a vent mast (not shown) having an opening for releasing gas in a section where there is no problem even if gas is released is provided outside the engine room 2 of the ship 1.
- the vent pipe 22 extending outside the engine room 2 extends to the vent mast outside the engine room 2. Since the gas fuel sent to the diesel engine 3 is boosted to a pressure required by the diesel engine 3, the gas fuel pressurized to the pressure required by the diesel engine 3 flows into the supply pipe 21 and the vent pipe 22. It has pressure resistance so that it will not be damaged.
- the gas piping system 10 includes a first duct 26 that covers the supply pipe 21 and a second duct 27 that covers the vent pipe 22 in the engine room 2 of the ship 1.
- the first duct 26 and the second duct 27 are shaped so as not to be damaged by leakage of the gas fuel and the vent gas from the supply pipe 21 and the vent pipe 22, that is, the internal pressure is not increased by the leakage of the gas fuel and the vent gas. It has a size of about.
- the first duct 26 and the second duct 27 are large enough for a person to enter and check.
- the 1st duct 26 and the 2nd duct 27 can take arbitrary shapes, if the above is satisfy
- the first duct 26 and the second duct 27 are made of a material having excellent pressure resistance, for example, a steel plate so as not to be damaged by leakage of gas fuel and vent gas.
- the first duct 26 and the second duct 27 have a rectangular cross section.
- Each of the first duct 26 and the second duct 27 preferably has an area of 800 mm ⁇ 1200 mm or more in cross-sectional area.
- board thickness of each surface which comprises the 1st duct 26 and the 2nd duct 27 is 10 mm or more.
- the first duct 26 and the second duct 27 communicate with each other through a communication hole 28 on one end side.
- a duct vent hole 29 communicating with the outside of the engine room 2 is formed on the other end side of the second duct 27, and the first duct 26 and the second duct 27 are connected to the other end side of the first duct 26.
- a duct exhaust fan 51 is provided for flowing the internal gas. As the duct exhaust fan 51, any known blower (fan) can be used as long as the gas in the first duct 26 and the second duct 27 can flow.
- the duct exhaust fan 51 a blower that causes the gas in the first duct 26 and the second duct 27 to flow by sucking the gas in the first duct 26 and the second duct 27 is used.
- the duct exhaust fan 51 preferably has a performance capable of maintaining the first duct 26 and the second duct 27 at a negative pressure of, for example, 25 Pa or more. Thereby, even if the gas fuel and the vent gas leak into the first duct 26 and the second duct 27, the gas fuel and the vent gas can be prevented from leaking into the engine room 2.
- the ends of the supply outer cylinder 312 and the vent outer cylinder 322 of the diesel engine 3 extend to the inside of the second duct 27 directly or via an extension pipe.
- the end of the supply outer cylinder 312 and the end of the vent outer cylinder 322 indicate the end of the extension pipe. That is, when the extension pipe is interposed, the supply outer cylinder 312 and the vent outer cylinder 322 are also referred to including the extension pipe.
- a rupturable plate 40 is provided at the end of the supply outer cylinder 312. It is preferable that the rupturable plate 40 is ruptured at about 0.5 MPa so that the pressure in the engine outer cylinder does not increase excessively when the gas fuel leaks.
- the rupturable plate 40 is provided with a burst sensor (not shown) that detects that the rupturable plate 40 has been ruptured.
- any known rupturable disc (rupture disc) and sensor can be used as the rupturable plate 40 and the burst sensor.
- the exhaust pipe 23 communicates between the rupturable plate 40 and the diesel engine 3 of the supply outer cylinder 312.
- an outer cylinder exhaust fan 52 for attaching the gas in the engine outer cylinder is attached.
- any known blower (fan) can be used as long as the gas in the engine outer cylinder can flow.
- a blower that causes the gas in the engine outer cylinder to flow by sucking the gas in the engine outer cylinder is used as the outer cylinder exhaust fan 52 preferably has a capability of maintaining a negative pressure of, for example, 25 Pa or more in the engine outer cylinder. Thereby, even if the gas fuel leaks into the engine outer cylinder, the leaked gas can be prevented from leaking into the engine room 2.
- the supply outer cylinder 312 is provided with a valve 61 between the rupturable plate 40 and the exhaust pipe 23.
- the supply pipe 21, the exhaust pipe 23, and the vent outer cylinder 322 are provided with a valve 62, a valve 63, and a valve 64, respectively.
- the supply pipe 21 is provided with a main gas valve 65 outside the engine room 2.
- a branch pipe 211 communicates with the supply outer cylinder 312 between the rupturable plate 40 and the valve 61, and a valve 66 is provided at the tip of the branch pipe 211.
- any known valves that can automatically or remotely switch between the open state and the closed state can be used.
- the vent outer cylinder 322 is provided with an airtight test connection port 71 through which air can be inserted into the vent outer cylinder 322 between the diesel engine 3 and the valve 64.
- gas concentration detection sensors 76 and 77 for detecting leakage of gas fuel and vent gas are provided.
- the exhaust pipe 23 is also provided with gas concentration sensors 78 and 79 that can detect whether gas fuel and vent gas are flowing inside the pipe.
- One gas concentration sensor 78, 79 attached to the exhaust pipe 23 is provided in the first duct 26, and one gas concentration sensor is provided until the gas is released from the outer cylinder exhaust fan 52 to the atmosphere.
- the flow of gas fuel and vent gas in the gas piping system 10 and the flow of leaked gas when the gas fuel leaks will be described.
- the gas fuel is supplied to the diesel engine 3 with the valves 61 to 65 opened and the valve 66 closed.
- the liquefied gas fuel stored in the fuel tank 5 is pressurized in the gas fuel supply device 7 and sent to the supply pipe 21 in a vaporized state.
- This gas fuel is sent to the supply inner cylinder 311 through the supply pipe 21 and used to drive the diesel engine 3.
- the gas fuel remaining in the diesel engine 3 and the supply pipe 21 passes through the vent inner cylinder 321 and the vent pipe 32 to the outside of the engine room 2 as a vent gas. Discharged.
- the vent gas that has flowed out of the engine room 2 flows to the vent mast through the vent pipe 32 and is discharged from the vent mast to the atmosphere.
- the inside of the first duct 26 and the second duct 27 is negative by driving the duct exhaust fan 51 and sucking the gas in the first duct 26 and the second duct 27.
- the outside air is taken into the second duct 27 from the duct vent hole 29.
- the air taken into the second duct 27 flows into the first duct 26 through the communication hole 28, is sucked in by the duct exhaust fan 51, and is released to the atmosphere in a safe place where there is no risk of gas explosion.
- the inside of the 1st duct 26 and the 2nd duct 27 is always forced-ventilated.
- the outer cylinder exhaust fan 52 is driven to suck the gas in the engine outer cylinder, so that the engine outer cylinder has a negative pressure, and the vent outer cylinder 322 Air is taken into the vent outer cylinder 322 from the open end 322a.
- the air taken into the vent outer cylinder 322 sequentially flows into the outer cylinder of the diesel engine 3 internal pipe, the supply outer cylinder 312, and the exhaust pipe 23, and is sucked in by the outer cylinder exhaust fan 52. It is released to the atmosphere in a safe place without any problem. As a result, the inside of the engine outer cylinder is always forcedly ventilated.
- the leaked gas spreads into the first duct 26 or the second duct 27. Since the gas flows in the first duct 26 and the second duct 27 by the duct exhaust fan 51, the leaked gas is sucked by the duct exhaust fan 51 and released to the atmosphere. Thereby, it is possible to prevent the leaked gas from flowing into the engine room 2 and coming into contact with a high temperature part or an ignition source in the engine room 2 to cause an explosion or ignition.
- gas concentration detection sensors 76 and 77 are provided in the first duct 26, when gas fuel leaks in the supply pipe 21, or when vent gas leaks in the vent pipe 22, Leaked gas is detected by the gas concentration detection sensors 76 and 77.
- the main gas valve 65 and the valve 62 are automatically closed, and the supply of gas fuel from the fuel tank 5 which is the gas fuel supply source is shut off.
- the rupturable plate 40 When gas fuel leaks from the inner cylinder of the engine, the rupturable plate 40 is ruptured by a shock wave / pressure wave accompanying adiabatic expansion of the gas fuel. When the rupture disc 40 ruptures, the burst sensor detects that the rupture disc 40 has ruptured, the main gas valve 65 and the valve 62 are automatically closed, and the supply of gas fuel is shut off. On the other hand, the gas fuel leaked into the engine outer cylinder is discharged into the second duct 27 from the opening generated by the rupture of the rupturable plate 40. The leaked gas released into the second duct 27 is sucked by the duct exhaust fan 51 through the first duct 26 because the gas flows in the second duct 27 by the duct exhaust fan 51. It is released into the atmosphere. Thereby, it is possible to prevent the leaked gas from flowing into the engine room 2 and coming into contact with a high temperature part or an ignition source in the engine room 2 to cause an explosion or ignition.
- the valve 61 is closed by remote control. Since the gas flows in the engine outer cylinder by the outer cylinder exhaust fan 52, the leaked gas staying in the engine outer cylinder without flowing into the second duct 27 is used for the outer cylinder. The air is sucked by the exhaust fan 52 and released into the atmosphere. Thereby, it is possible to prevent the leaked gas from flowing into the engine room 2 and coming into contact with a high temperature part or an ignition source in the engine room 2 to cause an explosion or ignition.
- the gas fuel leaks to such an extent that the rupturable plate 40 does not rupture from the engine inner cylinder, the gas flows in the engine outer cylinder and the exhaust pipe 23 communicating with the engine outer cylinder. Leaked gas is detected by gas concentration detection sensors 78, 79 provided in When the leaked gas is detected, the main gas valve 65 and the valve 62 are automatically closed, and the supply of gas fuel from the fuel tank 5 which is the gas fuel supply source is shut off. As described above, the gas leaked into the engine outer cylinder is released into the atmosphere by the outer cylinder exhaust fan 52.
- the gas piping system 10 includes the supply piping 21 that sends the gas fuel from the fuel tank 5 to the diesel engine 3 in the engine room 2 of the ship 1 where leakage of gas fuel is not permitted.
- the piping 22 for vent which sends vent gas out of the engine room 2 from the diesel engine 3 is covered with the 1st duct 26 and the 2nd duct 27, respectively.
- the supply pipe 21 and the vent pipe 22 by covering the supply pipe 21 and the vent pipe 22 with the first duct 26 and the second duct 27, a person can enter the first duct 26 and the second duct 27 configured as a wide space,
- the supply pipe 21 and the vent pipe 22, and the monitoring system attached to the supply pipe 21 and the vent pipe 22 for monitoring leakage of gas fuel and vent gas, and the gas flow of each pipe Inspection and maintenance of the control regulating valve and the like for control can be easily performed.
- a supply pipe 31 and a vent pipe 32 having a double pipe structure extend from the diesel engine 3, but the end portion of the supply outer cylinder 312 of the supply pipe 31 is in the second duct 27.
- a rupturable plate 40 is installed.
- the pipe for supplying gas fuel and discharging the vent gas is constructed as a double pipe, for example, assuming that the gas fuel is supplied at 30 MPa, the double pipe in consideration of the fracture caused by the shock wave at the time of gas leakage is assumed.
- the design pressure of the tube outer cylinder is calculated to be 18.1 MPa. That is, it can withstand 18.1 MPa in a monitoring system such as a pressure / temperature measurement sensor and a gas concentration detection sensor attached to an inner cylinder of a double pipe, and pipe accessories such as a pressure switch, a flow meter and a valve. Pressure resistance is required. However, it is practically difficult to make the monitoring system and the pipe accessory have a high pressure resistance structure.
- the gas leaked from the supply pipe 21 or the vent pipe 22 by covering the supply pipe 21 and the vent pipe 22 with the first duct 26 and the second duct 27 as in the present embodiment.
- the gas fuel filled in the engine outer cylinder due to damage caused in the portion of the double pipe structure It can be sucked out by the outer cylinder exhaust fan 52 through the exhaust pipe 23. Thereby, even if the leakage of gas fuel occurs, the leaked gas can be quickly released.
- the duct exhaust fan 51 and allowing the gas in the first duct 26 and the second duct 27 to flow the first duct 26 and the second duct 22 are damaged due to damage to the supply pipe 21 and the vent pipe 22.
- the gas fuel and vent gas leaked into the duct 27 can be sucked out by the duct exhaust fan 51. Thereby, even if gaseous fuel and vent gas leak, the leaked gas can be quickly released.
- the vent gas discharged from the diesel engine 3 is released to the atmosphere in a section where there is no problem even if the gas outside the ship is released from the vent mast.
- a vent exhaust pipe 32 may be branched from a pipe leading to the vent mast, and a pipe extending to the gas recovery tank may be provided to collect the vent gas as gas fuel in the gas recovery tank.
- the duct vent hole 29 is formed on the other end side of the second duct 27, and the duct exhaust fan 51 is provided on the other end side of the first duct 26.
- the duct exhaust fan 51 may be provided on the other end side of the second duct 27, and the duct vent hole 29 may be formed on the other end side of the first duct 26. That is, a duct vent hole 29 is provided on one other end side of the first duct 26 and the second duct 27, and a duct exhaust fan 51 is provided on the other other end side of the first duct 26 and the second duct 27. As long as it has.
- the end portions of the supply outer cylinder 312 and the vent outer cylinder 322 extend into the second duct 27.
- the supply outer cylinder 312 and the vent outer cylinder 322 are configured to extend into the first duct 26.
- one end of the supply outer cylinder 312 and the vent outer cylinder 322 may extend into the first duct 26 and the other end may extend into the second duct 27.
- the end portions of the supply outer cylinder 312 and the vent outer cylinder 322 may be configured to be located inside the first duct 26 or the second duct 27. At this time, if the end portion of the supply outer cylinder 312 is located in the first duct 26, the rupturable plate 40 may be provided in the first duct 26.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Examining Or Testing Airtightness (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
2 機関室
3 ディーゼルエンジン
5 燃料タンク
10 ガス配管システム
21 供給用配管
22 ベント用配管
23 排気管
26 第1ダクト
27 第2ダクト
28 連通孔
29 ダクト用通気孔
31 供給管
311 供給用内筒
312 供給用外筒
32 ベント管
321 ベント用内筒
322 ベント用外筒
40 破裂板
51 ダクト用排気ファン
52 外筒用排気ファン
Claims (4)
- 供給用内筒と供給用外筒とからなる二重管構造の供給管、および、ベント用内筒とベント用外筒とからなる二重管構造のベント管を有するディーゼルエンジンを主機または補機として搭載した船舶のディーゼルエンジンにガス燃料を供給するためのガス配管システムであって、
前記ガス燃料を貯蔵する燃料タンクから前記ディーゼルエンジンの前記供給用内筒へ前記ガス燃料を送るための供給用配管と、
前記ディーゼルエンジンの前記ベント用内筒から前記船舶の機関室外へベントガスを送るためのベント用配管と、
前記機関室内において、前記供給用配管を覆う第1ダクトと、
前記機関室内において、前記ベント用配管を覆う第2ダクトと、を備え、
前記供給用外筒および前記ベント用外筒は、前記第1ダクトまたは前記第2ダクトの内部まで延びており、
前記供給用外筒の端部には、前記第1ダクトまたは前記第2ダクト内において、破裂板が設けられているガス配管システム。 - 前記供給用外筒の、前記破裂板と前記ディーゼルエンジンとの間には、排気管が連通しており、
前記排気管の先端には、前記供給用外筒内の気体を流動させる外筒用排気ファンが取り付けられている請求項1に記載のガス配管システム。 - 前記第1ダクトおよび前記第2ダクトは、一端側で連通孔を介して連通しており、
前記第1ダクトおよび前記第2ダクトの一方は、他端側に船外と連通するダクト用通気孔を有し、
前記第1ダクトおよび前記第2ダクトの他方は、他端側に前記第1ダクトおよび前記第2ダクト内の気体を流動させるダクト用排気ファンを備える請求項1または2に記載のガス配管システム。 - 請求項1~4のいずれか一項に記載のガス配管システムを搭載した船舶。
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CN201680028010.3A CN108271366B (zh) | 2016-10-25 | 2016-10-25 | 气体管道系统和包括气体管道系统的船舶 |
ES16920314T ES2886607T3 (es) | 2016-10-25 | 2016-10-25 | Buque que presenta un sistema de tuberías de gas instalado en el mismo |
EP16920314.8A EP3502457B1 (en) | 2016-10-25 | 2016-10-25 | Ship having a gas piping system installed therein |
JP2017514713A JP6154980B1 (ja) | 2016-10-25 | 2016-10-25 | ガス配管システムおよびそれを搭載した船舶 |
PCT/JP2016/081581 WO2018078720A1 (ja) | 2016-10-25 | 2016-10-25 | ガス配管システムおよびそれを搭載した船舶 |
KR1020177033713A KR101919924B1 (ko) | 2016-10-25 | 2016-10-25 | 가스 배관 시스템 및 이를 탑재한 선박 |
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Cited By (4)
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JP2021123121A (ja) * | 2020-01-31 | 2021-08-30 | 三菱造船株式会社 | 船舶 |
JP2022522904A (ja) * | 2019-07-18 | 2022-04-20 | 上海外高橋造船有限公司 | デュアルフューエルによるメガコンテナ船ガスの供給システム及びメガコンテナ船 |
CN114483393A (zh) * | 2021-12-16 | 2022-05-13 | 中国船舶重工集团公司第七一一研究所 | 一种甲醇燃料系统 |
WO2023281896A1 (ja) * | 2021-07-08 | 2023-01-12 | 三菱造船株式会社 | 浮体 |
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KR102327412B1 (ko) * | 2020-07-27 | 2021-11-17 | 대우조선해양 주식회사 | 선박의 액체연료 벤팅 시스템 및 방법 |
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- 2016-10-25 KR KR1020177033713A patent/KR101919924B1/ko active IP Right Grant
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CN108271366B (zh) | 2018-11-20 |
EP3502457B1 (en) | 2021-06-09 |
EP3502457A4 (en) | 2020-01-01 |
JP6154980B1 (ja) | 2017-06-28 |
KR20180057574A (ko) | 2018-05-30 |
ES2886607T3 (es) | 2021-12-20 |
EP3502457A1 (en) | 2019-06-26 |
KR101919924B1 (ko) | 2019-02-08 |
CN108271366A (zh) | 2018-07-10 |
JPWO2018078720A1 (ja) | 2018-10-25 |
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