KR102638284B1 - Fuel Gas Supply System And Method For Ship - Google Patents

Fuel Gas Supply System And Method For Ship Download PDF

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KR102638284B1
KR102638284B1 KR1020180169031A KR20180169031A KR102638284B1 KR 102638284 B1 KR102638284 B1 KR 102638284B1 KR 1020180169031 A KR1020180169031 A KR 1020180169031A KR 20180169031 A KR20180169031 A KR 20180169031A KR 102638284 B1 KR102638284 B1 KR 102638284B1
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low
gas
fuel supply
pressure engine
ship
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KR1020180169031A
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Korean (ko)
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KR20200080440A (en
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박경환
김남수
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한화오션 주식회사
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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
    • 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
    • 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
    • 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
    • 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
    • F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • 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
    • B63B2770/00—
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0311—Air heating
    • 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
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • 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
    • F17C2265/02—Mixing fluids
    • F17C2265/022—Mixing fluids identical fluid
    • 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
    • F17C2265/05—Regasification
    • 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

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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)

Abstract

선박의 연료공급시스템 및 방법이 개시된다. 본 발명의 선박의 연료공급시스템은 선박에 마련된 고압 엔진의 연료 공급조건으로 액화가스를 압축하여 상기 고압 엔진으로 공급하는 제1 연료공급라인; 상기 제1 연료공급라인으로부터 분기되어 상기 액화가스를 선내 저압 엔진으로 공급하는 분기라인; 및 상기 분기라인에 마련되며 압축된 상기 액화가스를 공급받아 와류실을 거쳐 회전시켜 고온가스와 저온가스로 분리하여 배출하는 보텍스 밸브(votex valve)를 포함하며, 상기 액화가스는 상기 보텍스 밸브를 거치며 상기 저압 엔진의 압력 조건으로 감압되어 상기 저압 엔진에 공급되는 것을 특징으로 한다.A ship fuel supply system and method are disclosed. The fuel supply system for a ship of the present invention includes a first fuel supply line that compresses liquefied gas according to the fuel supply conditions of the high-pressure engine provided on the ship and supplies it to the high-pressure engine; A branch line branched from the first fuel supply line to supply the liquefied gas to the low-pressure engine on board the ship; And a votex valve provided in the branch line, which receives the compressed liquefied gas, rotates it through a vortex chamber, separates it into high-temperature gas and low-temperature gas, and discharges the liquefied gas, and the liquefied gas passes through the vortex valve. It is characterized in that the pressure is reduced to the pressure conditions of the low pressure engine and supplied to the low pressure engine.

Description

선박의 연료공급시스템 및 방법{Fuel Gas Supply System And Method For Ship}{Fuel Gas Supply System And Method For Ship}

본 발명은 선박의 연료공급시스템 및 방법에 관한 것으로, 더욱 상세하게는 고압 엔진으로 공급될 압축된 액화가스를 분기시켜 감압하여 선내 저압 엔진으로 공급하되, 압축된 액화가스를 보텍스 밸브를 통해 고온가스와 저온가스로 분리하며 감압하고, 분리된 고온가스와 저온가스를 혼합하여 저압 엔진으로 공급하도록 하는 선박의 연료공급시스템 및 방법에 관한 것이다. The present invention relates to a fuel supply system and method for ships. More specifically, the compressed liquefied gas to be supplied to the high-pressure engine is branched and decompressed to be supplied to the low-pressure engine on board, and the compressed liquefied gas is supplied to the high-temperature gas through a vortex valve. It relates to a fuel supply system and method for ships that separates and depressurizes low-temperature gas and mixes the separated high-temperature gas and low-temperature gas to supply to low-pressure engines.

천연가스(natural gas)는 메탄(methane)을 주성분으로 하고, 소량의 에탄(ethane), 프로판(propane) 등을 포함하는 화석연료로서, 최근 다양한 기술 분야에서 저공해 에너지원으로서 각광받고 있다.Natural gas is a fossil fuel that mainly contains methane and small amounts of ethane and propane, and has recently been in the spotlight as a low-pollution energy source in various technological fields.

천연가스는 경제성이 있고 친환경적인 에너지로 많이 소비되고 있으나, 기체인 천연가스 상태로 이송하기에는 부피가 커서 운송 및 저장 효율이 떨어진다. Natural gas is widely consumed as an economical and eco-friendly energy, but it is bulky to transport in gaseous natural gas form, so transportation and storage efficiency is low.

이러한 점을 보완하기 위해, 액화천연가스(Liquefied Natural Gas, LNG) 상태로 운송 및 저장하는 방법이 제시되었다. 액화천연가스는 메탄을 주성분으로 한 천연가스를 대기압에서 -162℃의 극저온 상태로 냉각시켜 그 부피를 600분의 1로 줄인 무색 투명한 초저온 액체로서, 기체상태보다 수송성과 저장성이 우수한 것으로 알려져 있다.To compensate for this, a method of transporting and storing liquefied natural gas (LNG) was proposed. Liquefied natural gas is a colorless, transparent, cryogenic liquid made by cooling natural gas, mainly composed of methane, to a cryogenic state of -162°C at atmospheric pressure and reducing its volume to 1/600. It is known to have better transport and storage properties than the gaseous state.

그러나 천연가스 액화온도는 상압 -162℃의 극저온이므로, LNG는 온도변화에 민감하여 쉽게 증발된다. LNG 운반선의 LNG 저장탱크의 경우 단열처리가 되어 있기는 하지만, 외부의 열이 LNG 저장탱크에 지속적으로 전달되므로, LNG 운반선에 의한 LNG 수송과정에서 LNG가 LNG 저장탱크 내에서 지속적으로 자연 기화되어 LNG 저장 탱크 내에 증발가스(Boil-Off Gas, BOG)가 발생한다.However, since the liquefaction temperature of natural gas is extremely low at -162°C at normal pressure, LNG is sensitive to temperature changes and easily evaporates. Although the LNG storage tank of an LNG carrier is insulated, external heat is continuously transferred to the LNG storage tank, so during the LNG transportation process by the LNG carrier, the LNG is continuously naturally vaporized within the LNG storage tank and becomes LNG. Boil-off gas (BOG) is generated within the storage tank.

BOG는 일종의 LNG 손실로서 LNG의 수송효율에 있어서 중요한 문제이며, LNG 저장탱크 내에 증발가스가 축적되면 LNG 저장탱크 내의 압력이 과도하게 상승하여 탱크가 파손될 위험이 있으므로, LNG 저장탱크 내에서 발생하는 BOG를 처리하기 위한 다양한 방법이 연구되고 있다.BOG is a type of LNG loss and is an important problem in the transportation efficiency of LNG. If boil-off gas accumulates in the LNG storage tank, the pressure in the LNG storage tank increases excessively and there is a risk of tank damage, so BOG generated in the LNG storage tank Various methods for processing are being studied.

최근에는 BOG의 처리를 위해, BOG를 재액화하여 저장탱크로 복귀시키는 방법, BOG를 선박의 엔진의 에너지원으로 사용하는 방법 등이 사용되고 있다. 그리고 잉여의 BOG에 대해서는 가스연소유닛(gas combustion unit, GCU)에서 연소시키는 방법을 사용하고 있다. Recently, methods such as re-liquefying BOG and returning it to a storage tank and using BOG as an energy source for ship engines have been used to treat BOG. Additionally, a method of burning excess BOG in a gas combustion unit (GCU) is used.

또한, LNG 운반선 자체에서 추진 장치나 발전 장치에서 자연 기화 또는 강제 기화된 가스와 연료유를 연료로 사용할 수 있는 이중연료 엔진(Dual Fuel Engine)이 개발되어 메인 엔진 및 제너레이터 엔진으로 사용되고 있어, BOG가 선내 연료로 공급되기도 한다. In addition, a dual fuel engine that can use gas and fuel oil naturally vaporized or forcedly vaporized in the propulsion device or power generation device as fuel in the LNG carrier itself has been developed and is used as the main engine and generator engine, so BOG It is also supplied as fuel on board ships.

LNG를 연료로 사용하는 선박에는 복수의 엔진이 마련되며, 특히 사용목적에 따라 공급압력이 다른 엔진이 설치될 수 있다. 공급압력이 다른 엔진을 구비하는 경우, 엔진별로 각각 연료공급시스템을 갖출 수 있으나, 선내 공간 및 설치비의 문제로 인해 일부 장치를 공유하도록 연료공급시스템을 구성할 수도 있다. Ships that use LNG as fuel are equipped with multiple engines, and in particular, engines with different supply pressures may be installed depending on the purpose of use. When engines with different supply pressures are installed, each engine can be equipped with a separate fuel supply system, but due to issues with space and installation costs within the ship, the fuel supply system may be configured to share some devices.

예를 들어 공급압력이 높은 엔진의 연료 공급라인으로부터 압축된 가스를 분기하여 가스의 압력을 조절하여 공급압력이 낮은 엔진으로 공급할 수 있다. 공급압력이 높은 엔진의 공급조건에 맞추어 압축된 가스를 저압인 엔진의 공급압력에 맞추기 위해 감압하는 경우, 감압 과정에서 가스의 온도도 낮아진다. 감압 중 온도가 낮아진 가스는 엔진에서 요구하는 온도조건에 맞추어 히터, 열교환기 등의 장치로 가열하여 공급하게 된다. 이 경우 낮아진 가스의 온도를 높이기 위한 장치의 운전을 위한 연료 등 비용이 발생한다. For example, compressed gas can be branched from the fuel supply line of an engine with a high supply pressure to adjust the pressure of the gas and supply it to an engine with a low supply pressure. When gas compressed to match the supply conditions of an engine with high supply pressure is decompressed to match the supply pressure of an engine with low pressure, the temperature of the gas also decreases during the decompression process. The gas whose temperature has decreased during decompression is heated and supplied to devices such as heaters and heat exchangers according to the temperature conditions required by the engine. In this case, costs such as fuel for operating the device to increase the temperature of the lowered gas are incurred.

본 발명은 이러한 문제를 해결하기 위한 것으로, 감압 중 떨어진 가스 온도를 보상하면서, 연료 등의 비용을 절감할 수 있는 연료공급시스템을 제안하고자 한다. The present invention is intended to solve this problem and proposes a fuel supply system that can reduce fuel costs while compensating for the gas temperature that drops during decompression.

본 발명의 일 측면에 따르면, 선박에 마련된 고압 엔진의 연료 공급조건으로 액화가스를 압축하여 상기 고압 엔진으로 공급하는 제1 연료공급라인;According to one aspect of the present invention, a first fuel supply line compresses liquefied gas according to the fuel supply conditions of a high-pressure engine provided on a ship and supplies it to the high-pressure engine;

상기 제1 연료공급라인으로부터 분기되어 상기 액화가스를 선내 저압 엔진으로 공급하는 분기라인; 및A branch line branched from the first fuel supply line to supply the liquefied gas to the low-pressure engine in the ship; and

상기 분기라인에 마련되며 압축된 상기 액화가스를 공급받아 와류실을 거쳐 회전시켜 고온가스와 저온가스로 분리하여 배출하는 보텍스 밸브(votex valve)를 포함하며,It is provided in the branch line and includes a votex valve that receives the compressed liquefied gas and rotates it through a vortex chamber to separate it into high-temperature gas and low-temperature gas and discharge it,

상기 액화가스는 상기 보텍스 밸브를 거치며 상기 저압 엔진의 압력 조건으로 감압되어 상기 저압 엔진에 공급되는 것을 특징으로 하는 선박의 연료공급시스템이 제공된다. A fuel supply system for a ship is provided, wherein the liquefied gas passes through the vortex valve and is depressurized to the pressure conditions of the low-pressure engine and supplied to the low-pressure engine.

바람직하게는, 상기 보텍스 밸브로부터 고온가스가 배출되는 고온가스 라인; 및 상기 보텍스 밸브로부터 저온가스가 배출되는 저온가스 라인;을 더 포함하며, 상기 고온가스 및 저온가스 라인은 상기 보텍스 밸브의 하류에서 합류되어 상기 저압 엔진으로 연결되고, 상기 액화가스는 상기 보텍스 밸브를 거치며 가온되어 상기 저압 엔진으로 공급될 수 있다. Preferably, a high-temperature gas line through which high-temperature gas is discharged from the vortex valve; and a low-temperature gas line through which low-temperature gas is discharged from the vortex valve, wherein the high-temperature gas and low-temperature gas lines are joined downstream of the vortex valve and connected to the low-pressure engine, and the liquefied gas flows through the vortex valve. It can be heated and supplied to the low-pressure engine.

바람직하게는, 상기 저온가스 라인에는 상기 저온가스가 대기와 열교환으로 가열되는 핀(fin)이 마련될 수 있다. Preferably, the low-temperature gas line may be provided with a fin through which the low-temperature gas is heated through heat exchange with the atmosphere.

바람직하게는 상기 제1 연료공급라인에는, 상기 고압 엔진에 연료로 공급될 상기 액화가스를 압축하는 고압펌프; 및 상기 고압펌프에서 압축된 상기 액화가스를 가열하는 기화기;가 마련되고, 상기 분기라인은 상기 기화기의 하류에서 상기 제1 연료공급라인으로부터 분기될 수 있다. Preferably, the first fuel supply line includes a high-pressure pump that compresses the liquefied gas to be supplied as fuel to the high-pressure engine; and a vaporizer that heats the liquefied gas compressed by the high-pressure pump. The branch line may branch from the first fuel supply line downstream of the vaporizer.

본 발명의 다른 측면에 따르면, 선박에 마련된 고압 엔진으로 액화가스를 압축 및 가열하여 공급하고, 상기 고압 엔진으로 공급될 압축된 액화가스를 분기시켜 감압하여 선내 저압 엔진으로 공급하되,According to another aspect of the present invention, liquefied gas is compressed and heated by a high-pressure engine provided on a ship and supplied, and the compressed liquefied gas to be supplied to the high-pressure engine is branched and decompressed and supplied to a low-pressure engine on board the ship,

상기 저압 엔진에 공급될 압축된 상기 액화가스는 보텍스 밸브의 와류실을 거쳐 회전하며 고온가스와 저온가스로 분리되며 감압되고, 보텍스 밸브의 하류에서 상기 고온가스 및 저온가스가 혼합되어 상기 저압 엔진으로 공급되는 것을 특징으로 하는 선박의 연료공급방법이 제공된다. The compressed liquefied gas to be supplied to the low-pressure engine rotates through the vortex chamber of the vortex valve, is separated into high-temperature gas and low-temperature gas, and is decompressed, and downstream of the vortex valve, the high-temperature gas and low-temperature gas are mixed to the low-pressure engine. A method of supplying fuel to a ship is provided.

바람직하게는, 상기 보텍스 밸브에서 배출되는 저온가스는 핀(fin)에서 대기와 열교환으로 가열된 후 상기 고온가스와 혼합될 수 있다. Preferably, the low-temperature gas discharged from the vortex valve may be heated by heat exchange with the atmosphere at a fin and then mixed with the high-temperature gas.

본 발명의 연료공급시스템에서는 고압 및 저압 엔진이 설치된 선박에서 고압 엔진으로 공급될 압축된 액화가스를 분기시켜 감압하여 선내 저압 엔진으로 공급할 수 있도록 하되, 분기라인에 보텍스 밸브를 설치하여, 압축된 액화가스 일부가 보텍스 밸브를 통해 회전하며 고온가스와 저온가스로 감압되어 분리되도록 하고, 이를 혼합시켜 저압 엔진으로 공급하도록 한다. In the fuel supply system of the present invention, the compressed liquefied gas to be supplied to the high-pressure engine in a ship equipped with high-pressure and low-pressure engines is branched and decompressed to supply it to the low-pressure engine on board, and a vortex valve is installed in the branch line to liquefy the compressed gas. As part of the gas rotates through the vortex valve, the pressure is reduced and separated into high-temperature gas and low-temperature gas, and they are mixed and supplied to the low-pressure engine.

이와 같이 본 발명에 따르면 고압 엔진과 저압 엔진이 설치된 선박에서 고압 엔진의 공급 압력으로 압축된 액화가스를 감압하여 저압 엔진으로 공급할 수 있도록 함으로써, 압축기의 대수를 줄여 시스템 설치 비용을 절감하고 선내 공간을 확보할 수 있다. In this way, according to the present invention, in ships equipped with high-pressure engines and low-pressure engines, liquefied gas compressed by the supply pressure of the high-pressure engine can be decompressed and supplied to the low-pressure engine, thereby reducing the number of compressors, reducing system installation costs and saving space within the ship. It can be secured.

또한, 보텍스 밸브를 통해 감압 및 온도를 보상하여 저압 엔진으로 공급함으로써 유지보수 비용을 절감할 수 있으며, 히터 등의 장치를 줄이고, 열원 공급을 위한 연료 소비를 줄여 CAPEX 및 OPEX를 낮출 수 있다. In addition, maintenance costs can be reduced by compensating for pressure and temperature through a vortex valve and supplying it to a low-pressure engine. CAPEX and OPEX can be lowered by reducing devices such as heaters and reducing fuel consumption for heat source supply.

도 1은 선박의 연료공급시스템의 일 예를 도시한다.
도 2는 본 발명의 제1 실시예에 따른 선박의 연료공급시스템을 개략적으로 도시한다.
도 3은 본 발명의 제2 실시예에 따른 선박의 연료공급시스템을 개략적으로 도시한다. Figure 1 shows an example of a ship's fuel supply system.
Figure 2 schematically shows a fuel supply system for a ship according to a first embodiment of the present invention.
Figure 3 schematically shows a fuel supply system for a ship according to a second embodiment of the present invention.

본 발명의 동작상 이점 및 본 발명의 실시에 의하여 달성되는 목적을 충분히 이해하기 위해서는 본 발명의 바람직한 실시예를 예시하는 첨부도면 및 첨부도면에 기재된 내용을 참조하여야만 한다.In order to fully understand the operational advantages of the present invention and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대해 구성 및 작용을 상세히 설명하면 다음과 같다. 여기서 각 도면의 구성요소들에 대해 참조 부호를 부가함에 있어 동일한 구성요소들에 한해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호로 표기되었음에 유의하여야 한다.Hereinafter, the structure and operation of a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Here, in adding reference numerals to components in each drawing, it should be noted that identical components are indicated with the same reference numerals as much as possible, even if they are shown in different drawings.

후술하는 본 발명의 실시예에서 선박은, 액화가스를 추진용 또는 발전용 엔진의 연료로 사용할 수 있는 엔진이 설치되거나 액화가스를 연료로 사용하는 모든 종류의 선박일 수 있다. 대표적으로 LNG 운반선(LNG Carrier), 액체수소 운반선, LNG RV(Regasification Vessel)와 같은 자체 추진 능력을 갖춘 선박을 비롯하여, LNG FPSO(Floating Production Storage Offloading), LNG FSRU(Floating Storage Regasification Unit)와 같이 추진 능력을 갖추지는 않지만 해상에 부유하고 있는 해상 구조물도 포함될 수 있다. In an embodiment of the present invention described later, the ship may be any type of ship installed with an engine capable of using liquefied gas as fuel for a propulsion or power generation engine or using liquefied gas as fuel. Representative examples include ships with self-propulsion capabilities such as LNG carriers, liquid hydrogen carriers, and LNG RVs (Regasification Vessels), as well as LNG FPSOs (Floating Production Storage Offloading) and LNG FSRUs (Floating Storage Regasification Units). Marine structures that do not have capabilities but are floating at sea may also be included.

또한, 본 실시예는 액화가스를 저온으로 액화시켜 수송되며 연료로 사용될 수 있는 모든 종류의 액화가스에 적용될 수 있다. 이러한 액화가스는 예를 들어 LNG(Liquefied Natural Gas), LEG(Liquefied Ethane Gas), LPG(Liquefied Petroleum Gas), 액화에틸렌가스(Liquefied Ethylene Gas), 액화프로필렌가스(Liquefied Propylene Gas) 등과 같은 액화석유화학가스일 수 있다. 다만, 후술하는 실시예에서는 대표적인 액화가스인 LNG가 적용되는 것을 예로 들어 설명하기로 한다. In addition, this embodiment can be applied to all types of liquefied gas that can be liquefied and transported at low temperature and used as fuel. These liquefied gases are, for example, liquefied petrochemicals such as LNG (Liquefied Natural Gas), LEG (Liquefied Ethane Gas), LPG (Liquefied Petroleum Gas), Liquefied Ethylene Gas, and Liquefied Propylene Gas. It could be gas. However, in the examples described later, the application of LNG, a representative liquefied gas, will be described as an example.

도 1에는 선박의 연료공급을 위한 기본시스템을 도시하였다. Figure 1 shows the basic system for supplying fuel to a ship.

도 1에 도시된 바와 같이 선박에는 사용목적에 따라 공급압력이 다른 엔진이 설치될 수 있다. As shown in Figure 1, engines with different supply pressures may be installed on ships depending on the purpose of use.

본 시스템 및 후술하는 실시예들에서 예를 들어 고압 엔진은, 2 행정으로 구성되며 300 bar 부근의 고압 천연가스를 피스톤의 상사점 부근에서 연소실에 직접 분사하는 디젤 사이클(Diesel Cycle)을 채택한 ME-GI 엔진일 수 있고, 저압 엔진은 4 행정으로 구성되며 비교적 저압인 6.5 bar 정도의 압력을 가지는 천연가스를 연소공기 입구에 주입하여, 피스톤이 올라가면서 압축을 시키는 오토 사이클(Otto Cycle)을 채택되는 DFDE일 수 있다. For example, in this system and the embodiments described below, the high-pressure engine is composed of two strokes and adopts a diesel cycle (Diesel Cycle) that injects high-pressure natural gas around 300 bar directly into the combustion chamber near the top dead center of the piston. It may be a GI engine, and the low-pressure engine consists of a 4-stroke engine and adopts the Otto Cycle, which injects natural gas with a relatively low pressure of about 6.5 bar into the combustion air inlet and compresses it as the piston rises. It could be DFDE.

공급압력이 다른 고압 엔진(HE)과 저압 엔진(LE)이 구비하는 경우, 엔진별로 각각 연료공급시스템을 갖출 수도 있으나, 도 1의 기본시스템과 후술하는 제1 및 제2 실시예의 시스템들은 일부 장치를 공유하여 고압 엔진으로 연료가 공급되는 제1 연료공급라인(FL1)으로부터 압축된 가스를 분기라인(BL)을 통해 분기하여 감압한 후 제2 연료공급라인(FL2)을 통해 저압 엔진으로 공급하도록 한 것이다. When equipped with a high-pressure engine (HE) and a low-pressure engine (LE) with different supply pressures, each engine may be equipped with a fuel supply system, but the basic system of FIG. 1 and the systems of the first and second embodiments described later are some devices. The gas compressed from the first fuel supply line (FL1), which supplies fuel to the high-pressure engine, is branched through a branch line (BL) to depressurize it and then supplied to the low-pressure engine through the second fuel supply line (FL2). It was done.

도 1에 도시된 바와 같이 제1 연료공급라인에는 고압펌프(100)와 기화기(200)가 마련된다. 고압펌프에서 고압 엔진에 연료로 공급될 액화가스를 압축하고, 압축된 액화가스는 기화기에서 고압 엔진의 연료공급조건에 맞추어 가열된 후 제1 연료공급라인을 따라 고압 엔진(HE)으로 공급된다. As shown in FIG. 1, a high pressure pump 100 and a carburetor 200 are provided in the first fuel supply line. The high-pressure pump compresses the liquefied gas to be supplied as fuel to the high-pressure engine, and the compressed liquefied gas is heated in a carburetor according to the fuel supply conditions of the high-pressure engine and then supplied to the high-pressure engine (HE) along the first fuel supply line.

기화기의 하류에서 제1 연료공급라인으로부터 분기된 분기라인(BL)을 따라 저압 엔진으로 가스가 공급될 수 있다. 분기라인에는 고압펌프를 거쳐 압축된 가스를 감압하기 위한 팽창장치(210)가 마련된다. 팽창장치를 거쳐 감압된 가스는 감압 과정에서 온도도 낮아지므로 제2 연료공급라인에 마련된 히터(220)를 거쳐 엔진에서 요구하는 온도조건에 맞추어 가열된 후 저압 엔진으로 공급될 수 있다. Gas may be supplied to the low-pressure engine along a branch line (BL) branched from the first fuel supply line downstream of the carburetor. An expansion device 210 is provided in the branch line to depressurize the gas compressed through a high-pressure pump. Since the temperature of the gas decompressed through the expansion device is lowered during the decompression process, it can be heated to the temperature condition required by the engine through the heater 220 provided in the second fuel supply line and then supplied to the low-pressure engine.

도 2에는 본 발명의 제1 실시예에 따른 선박의 연료공급시스템을, 도 3에는 본 발명의 제2 실시예에 따른 선박의 연료공급시스템을 각각 개략적으로 도시하였다. Figure 2 schematically shows a fuel supply system for a ship according to a first embodiment of the present invention, and Figure 3 schematically shows a fuel supply system for a ship according to a second embodiment of the present invention.

도 2에 도시된 바와 같이 본 제1 실시예의 시스템은, 선박에 마련된 고압 엔진의 연료 공급조건으로 액화가스를 압축하여 고압 엔진으로 공급하는 제1 연료공급라인(FL1), 제1 연료공급라인으로부터 고압펌프(100) 및 기화기(200)의 하류에서 분기되어 액화가스를 선내 저압 엔진으로 공급하는 분기라인(BL), 분기라인에 마련되며 저압 엔진으로 공급될 압축된 액화가스를 공급받아 와류실을 거쳐 회전시켜 고온가스와 저온가스로 분리하여 배출하는 보텍스 밸브(votex valve, 300)를 포함한다. As shown in FIG. 2, the system of this first embodiment compresses liquefied gas according to the fuel supply conditions of the high-pressure engine provided on the ship and supplies it to the high-pressure engine, from the first fuel supply line (FL1), the first fuel supply line. A branch line (BL) is provided downstream of the high-pressure pump 100 and the carburetor 200 to supply liquefied gas to the ship's low-pressure engine, and is provided in the branch line to receive compressed liquefied gas to be supplied to the low-pressure engine and create a vortex chamber. It includes a votex valve (300) that separates high-temperature gas and low-temperature gas by rotating them and discharges them.

본 실시예들에서는 전술한 도 1의 시스템에 구성된 팽창장치 및 히터를 구성하지 않고, 분기라인에 보텍스 밸브(300)를 구성하여, 고압펌프를 거쳐 압축된 액화가스를 저압 엔진의 연료 공급 조건에 맞추어 감압하는 동시에 히터 등 추가장치를 구성하지 않고 액화가스를 가온할 수 있도록 한 것이 특징이다. In the present embodiments, the expansion device and heater configured in the system of FIG. 1 described above are not configured, and the vortex valve 300 is configured in the branch line to supply liquefied gas compressed through a high pressure pump to the fuel supply conditions of the low pressure engine. It is characterized by being able to reduce pressure and simultaneously heat liquefied gas without the need for additional devices such as heaters.

보텍스 밸브에서는 압축된 기체가 투입되면 와류실을 거쳐 고속으로 가속되며 회전하면서 고온 흐름과 저온 흐름으로 나뉘어 저압으로 배출된다. 보텍스 밸브는 별도의 rotating part나 가동부(moving part)가 없는 단순한 구조로 유지보수 비용이 거의 들지 않는 장점이 있다. 보텍스 밸브에 투입된 압축된 기체는 배출 시 압력이 낮아지며, 보텍스 밸브를 거치면서 고온 흐름의 온도는 200℃까지 올라가고, 저온 흐름의 온도는 -50℃까지 떨어지는데, 투입된 압축 기체의 운동에너지가 열에너지로 전환되면서 고온 흐름과 저온 흐름이 합류되더라도 투입된 기체의 온도보다 높은 온도의 기체 흐름을 얻을 수 있다.In a vortex valve, when compressed gas is input, it is accelerated to high speed through a vortex chamber, and as it rotates, it is divided into high-temperature flow and low-temperature flow and discharged at low pressure. The vortex valve has a simple structure with no separate rotating or moving parts and has the advantage of almost no maintenance costs. The pressure of the compressed gas injected into the vortex valve is lowered when discharged, and as it passes through the vortex valve, the temperature of the high-temperature flow rises to 200℃, and the temperature of the low-temperature flow drops to -50℃, and the kinetic energy of the injected compressed gas is converted into heat energy. Even if the high-temperature flow and the low-temperature flow are combined, a gas flow with a temperature higher than the temperature of the input gas can be obtained.

본 실시예는 이러한 점에 착안하여 전술한 도 1의 시스템에서 분기라인의 팽창장치 대신 보텍스 밸브를 적용하여, 저압 엔진으로 공급될 연료를 가열하기 위한 히터의 장치 구성 및 운용 비용을 절감할 수 있도록 한다. Taking this into account, this embodiment applies a vortex valve instead of the expansion device of the branch line in the system of FIG. 1 described above, so as to reduce the device configuration and operating costs of the heater for heating the fuel to be supplied to the low-pressure engine. do.

본 실시예의 시스템에는 보텍스 밸브(300)로부터 고온가스가 배출되는 고온가스 라인(HL)과, 보텍스 밸브로부터 저온가스가 배출되는 저온가스 라인(LL)이 마련되며, 고온가스 라인(HL)과 저온가스 라인(LL)은 보텍스 밸브의 후단에서 합류되어 제2 연료공급라인(FL2)을 따라 저압 엔진으로 연결된다. The system of this embodiment is provided with a high-temperature gas line (HL) through which high-temperature gas is discharged from the vortex valve 300 and a low-temperature gas line (LL) through which low-temperature gas is discharged from the vortex valve, and the high-temperature gas line (HL) and the low-temperature gas line are provided. The gas line (LL) is joined at the rear end of the vortex valve and connected to the low pressure engine along the second fuel supply line (FL2).

보텍스 밸브에서 분리된 고온가스와 혼합되어 가열된 가스의 온도가 저압 엔진의 연료공급조건보다 낮은 경우, 제2 연료공급라인(FL2)에 추가로 히터나 열교환기를 마련하여 열에너지를 추가로 공급할 수도 있다. 추가로 히터나 열교환기를 마련하는 경우에도 보텍스 밸브를 설치함으로써 히터나 열교환기의 가동을 줄일 수 있어 CAPEX 및 OPEX를 절감할 수 있다. If the temperature of the gas heated by mixing with the high-temperature gas separated from the vortex valve is lower than the fuel supply conditions of the low-pressure engine, additional heat energy may be supplied by providing an additional heater or heat exchanger in the second fuel supply line (FL2). . Even when installing an additional heater or heat exchanger, installing a vortex valve can reduce the operation of the heater or heat exchanger, thereby reducing CAPEX and OPEX.

도 3에 도시된 제2 실시예는 보텍스 밸브 하류의 저온가스 라인에 저온가스가 대기와 열교환으로 가열되는 핀(fin, 400)을 추가로 마련하는 것이 특징이다. 이를 통해 보텍스 밸브를 거쳐 배출되는 저온가스는 핀을 거쳐 대기와의 열교환으로 가열된 후, 보텍스 밸브 하류에서 고온가스와 혼합되어 저압 엔진으로 공급된다.The second embodiment shown in FIG. 3 is characterized by additionally providing a fin 400 in the low-temperature gas line downstream of the vortex valve through which the low-temperature gas is heated by heat exchange with the atmosphere. Through this, the low-temperature gas discharged through the vortex valve is heated through heat exchange with the atmosphere through a fin, and is then mixed with high-temperature gas downstream of the vortex valve and supplied to the low-pressure engine.

다른 구성은 전술한 제1 실시예와 유사하므로 중복한 설명은 생략한다. Since other configurations are similar to the above-described first embodiment, redundant description will be omitted.

이상에서 살펴본 바와 같이, 본 실시예들에서는 고압 및 저압 엔진이 마련된 선박에서 액화가스를 압축 및 가열하여 고압 엔진으로 공급하고, 고압 엔진으로 공급될 압축된 액화가스를 분기시켜 감압하여 선내 저압 엔진으로 공급하되, 저압 엔진에 공급하기 위해 분기시킨 압축된 액화가스를 보텍스 밸브를 거쳐 저압 엔진의 연료 공급 조건에 맞추어 감압 및 가온하여 저압 엔진으로 공급함으로써 장치 구성 및 운용 비용을 줄여 CAPEX 및 OPEX를 낮추고 선내 공간 확보에 기여할 수 있다. As discussed above, in the present embodiments, liquefied gas is compressed and heated on a ship equipped with high-pressure and low-pressure engines and supplied to the high-pressure engine, and the compressed liquefied gas to be supplied to the high-pressure engine is branched and decompressed to be supplied to the low-pressure engine in the ship. However, the compressed liquefied gas branched out to supply to the low-pressure engine is depressurized and heated according to the fuel supply conditions of the low-pressure engine through a vortex valve, and then supplied to the low-pressure engine, thereby reducing device configuration and operating costs, lowering CAPEX and OPEX, and reducing CAPEX and OPEX within the ship. It can contribute to securing space.

본 발명은 상기 실시예에 한정되지 않고, 본 발명의 기술적 요지를 벗어나지 아니하는 범위 내에서 다양하게 수정 또는 변형되어 실시될 수 있음은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 자명한 것이다. It is obvious to those skilled in the art that the present invention is not limited to the above-mentioned embodiments, and that it can be implemented with various modifications or variations without departing from the technical gist of the present invention. It was done.

HE: 고압 엔진
LE: 저압 엔진
FL1: 제1 연료공급라인
FL2: 제2 연료공급라인
BL: 분기라인
100: 고압펌프
200: 기화기
300: 보텍스 밸브
400: 핀HE: High pressure engine
LE: Low pressure engine
FL1: 1st fuel supply line
FL2: Second fuel supply line
BL: branch line
100: High pressure pump
200: carburetor
300: Vortex valve
400: pin

Claims (6)

선박에 마련된 고압 엔진의 연료 공급조건으로 액화가스를 압축하여 상기 고압 엔진으로 공급하는 제1 연료공급라인;
상기 제1 연료공급라인으로부터 분기되어 상기 액화가스를 선내 저압 엔진으로 공급하는 분기라인;
상기 분기라인에 마련되며 압축된 상기 액화가스를 공급받아 와류실을 거쳐 회전시켜 고온가스와 저온가스로 분리하여 배출하는 보텍스 밸브(votex valve);
상기 보텍스 밸브로부터 고온가스가 배출되는 고온가스 라인;
상기 보텍스 밸브로부터 저온가스가 배출되는 저온가스 라인; 및
상기 저온가스 라인에 마련되며 상기 저온가스가 대기와 열교환으로 가열되는 핀(fin)을 포함하며,
상기 고온가스 및 저온가스 라인은 상기 보텍스 밸브의 하류에서 합류되어 상기 저압 엔진으로 연결되어,
상기 액화가스는 상기 보텍스 밸브를 거치며 상기 저압 엔진의 압력 조건으로 감압되어 상기 저압 엔진에 공급되는 것을 특징으로 하는 선박의 연료공급시스템. A first fuel supply line that compresses liquefied gas according to the fuel supply conditions of the high-pressure engine provided on the ship and supplies it to the high-pressure engine;
A branch line branched from the first fuel supply line to supply the liquefied gas to the low-pressure engine in the ship;
A votex valve provided in the branch line, receives the compressed liquefied gas, rotates it through a vortex chamber, separates it into high-temperature gas and low-temperature gas, and discharges it;
A high-temperature gas line through which high-temperature gas is discharged from the vortex valve;
A low-temperature gas line through which low-temperature gas is discharged from the vortex valve; and
It is provided in the low-temperature gas line and includes a fin through which the low-temperature gas is heated by heat exchange with the atmosphere,
The high-temperature gas and low-temperature gas lines are joined downstream of the vortex valve and connected to the low-pressure engine,
A ship's fuel supply system, wherein the liquefied gas passes through the vortex valve and is depressurized to the pressure conditions of the low-pressure engine and supplied to the low-pressure engine. 제 1항에 있어서,
상기 액화가스는 상기 보텍스 밸브를 거치며 가온되어 상기 저압 엔진으로 공급되는 것을 특징으로 하는 선박의 연료공급시스템. According to clause 1,
A ship's fuel supply system, characterized in that the liquefied gas is heated through the vortex valve and supplied to the low pressure engine. 삭제delete 제 1항에 있어서, 상기 제1 연료공급라인에는
상기 고압 엔진에 연료로 공급될 상기 액화가스를 압축하는 고압펌프; 및
상기 고압펌프에서 압축된 상기 액화가스를 가열하는 기화기;가 마련되고,
상기 분기라인은 상기 기화기의 하류에서 상기 제1 연료공급라인으로부터 분기되는 것을 특징으로 하는 선박의 연료공급시스템. The method of claim 1, wherein the first fuel supply line
A high-pressure pump that compresses the liquefied gas to be supplied as fuel to the high-pressure engine; and
A vaporizer that heats the liquefied gas compressed by the high-pressure pump is provided,
The branch line is a ship's fuel supply system, characterized in that it branches off from the first fuel supply line downstream of the carburetor. 선박에 마련된 고압 엔진으로 액화가스를 압축 및 가열하여 공급하고, 상기 고압 엔진으로 공급될 압축된 액화가스를 분기시켜 감압하여 선내 저압 엔진으로 공급하되,
상기 저압 엔진에 공급될 압축된 상기 액화가스는 보텍스 밸브의 와류실을 거쳐 회전하며 고온가스와 저온가스로 분리되며 감압되고, 보텍스 밸브의 하류에서 상기 고온가스 및 저온가스가 혼합되어 상기 저압 엔진으로 공급되며,
상기 보텍스 밸브에서 배출되는 저온가스는 핀(fin)에서 대기와 열교환으로 가열된 후 상기 고온가스와 혼합될 수 있는 것을 특징으로 하는 선박의 연료공급방법. Liquefied gas is compressed and heated and supplied by a high-pressure engine provided on the ship, and the compressed liquefied gas to be supplied to the high-pressure engine is branched, decompressed, and supplied to the low-pressure engine on board the ship.
The compressed liquefied gas to be supplied to the low-pressure engine rotates through the vortex chamber of the vortex valve, is separated into high-temperature gas and low-temperature gas, and is decompressed. Downstream of the vortex valve, the high-temperature gas and low-temperature gas are mixed and supplied to the low-pressure engine. supplied,
A fuel supply method for a ship, characterized in that the low-temperature gas discharged from the vortex valve is heated by heat exchange with the atmosphere at a fin and then mixed with the high-temperature gas. 삭제delete
KR1020180169031A 2018-12-26 2018-12-26 Fuel Gas Supply System And Method For Ship KR102638284B1 (en)

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