KR102631164B1 - Fuel supply system of ship - Google Patents

Fuel supply system of ship Download PDF

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Publication number
KR102631164B1
KR102631164B1 KR1020190160404A KR20190160404A KR102631164B1 KR 102631164 B1 KR102631164 B1 KR 102631164B1 KR 1020190160404 A KR1020190160404 A KR 1020190160404A KR 20190160404 A KR20190160404 A KR 20190160404A KR 102631164 B1 KR102631164 B1 KR 102631164B1
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South Korea
Prior art keywords
storage tank
fluid
supply line
supplied
cooler
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KR1020190160404A
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Korean (ko)
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KR20210072161A (en
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유호연
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삼성중공업 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 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—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
    • F02M21/0245—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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/012—Purifying the fluid by filtering
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/033—Treating the boil-off by recovery with cooling
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/038—Treating the boil-off by recovery with expanding
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels

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

Abstract

선박연료공급시스템을 개시한다. 본 발명의 실시 예에 따른 선박연료공급시스템은 액화가스 및 이의 증발가스를 저장하는 저장탱크로부터 액화가스를 공급받아 기화시키는 기화기를 마련하며, 기화된 유체를 수요처의 연료로 공급하는 제1공급라인; 저장탱크로부터 증발가스를 공급받아 압축시키는 압축부를 마련하며, 압축부에 의해 압축된 유체를 제1공급라인으로 공급하여 기화기에 의해 기화된 유체와 혼합시키는 제2공급라인; 혼합된 유체 중 일부를 저장탱크로 회수시키는 회수라인; 저장탱크로부터 공급된 액화가스 중 일부를 제1공급라인의 기화기 전단으로부터 분기된 분기라인으로부터 공급받아 회수라인을 통해 공급된 혼합된 유체와 열교환시켜, 혼합된 유체의 온도를 윤활유의 유동점을 기초로 냉각시키는 쿨러; 및 냉각된 유체에 함유된 윤활유를 필터링하는 필터;를 포함한다.Launch of ship fuel supply system. The marine fuel supply system according to an embodiment of the present invention provides a vaporizer that receives liquefied gas from a storage tank that stores liquefied gas and its boil-off gas and vaporizes it, and provides a first supply line that supplies the vaporized fluid as fuel to the consumer. ; A compression unit is provided to receive and compress the boil-off gas from the storage tank, and a second supply line supplies the fluid compressed by the compression unit to the first supply line to mix it with the fluid vaporized by the vaporizer; A recovery line that returns part of the mixed fluid to a storage tank; Some of the liquefied gas supplied from the storage tank is supplied from a branch line branched from the front end of the vaporizer of the first supply line, and heat is exchanged with the mixed fluid supplied through the recovery line, and the temperature of the mixed fluid is adjusted based on the pour point of the lubricant. cooling cooler; and a filter for filtering the lubricant contained in the cooled fluid.

Figure 112019125697217-pat00001
Figure 112019125697217-pat00001

Description

선박연료공급시스템{FUEL SUPPLY SYSTEM OF SHIP}Ship fuel supply system{FUEL SUPPLY SYSTEM OF SHIP}

본 발명은 선박연료공급시스템에 관한 것이다.The present invention relates to a marine fuel supply system.

온실가스 및 각종 대기오염 물질의 배출에 대한 국제해사기구(IMO)의 규제가 강화됨에 따라 조선 및 해운업계에서는 기존 연료인 중유, 디젤유의 이용을 대신하여, 청정 에너지원인 천연가스를 선박의 연료가스로 이용하는 경우가 많아지고 있다.As the International Maritime Organization (IMO)'s regulations on the emission of greenhouse gases and various air pollutants are strengthened, the shipbuilding and shipping industry is using natural gas, a clean energy source, as fuel gas for ships instead of using existing fuels such as heavy oil and diesel oil. It is increasingly being used.

연료가스 중에서 널리 이용되고 있는 천연가스(Natural Gas)는 메탄(Methane)을 주성분으로 하며, 통상적으로 그 부피를 1/600로 줄인 액화가스(Liquefied Gas) 상태로 변화되어 저장 및 운반되고 있다.Natural gas, which is widely used among fuel gases, contains methane as its main ingredient, and is usually stored and transported in a liquefied gas state with its volume reduced to 1/600.

액화가스를 운반하는 선박은 액화가스를 저장할 수 있도록 단열 처리된 저장탱크를 구비한다. 또, 이러한 선박은 저장탱크에서 발생하는 증발가스(Boiled Off Gas) 또는 저장탱크의 액화가스를 기화시켜 수요처의 연료로 공급하는 연료공급시스템을 마련할 수 있다. 이때, 증발가스는 압축부를 통해 압축시키고, 액화가스는 기화기를 통해 기화시킨 후, 수요처의 연료로 공급하게 된다.Ships that transport liquefied gas are equipped with insulated storage tanks to store the liquefied gas. In addition, these ships can be equipped with a fuel supply system that vaporizes boiled off gas or liquefied gas generated in the storage tank and supplies it as fuel to the customer. At this time, the boil-off gas is compressed through the compression unit, the liquefied gas is vaporized through the vaporizer, and then supplied as fuel to the customer.

수요처는 예컨대, 선박의 엔진을 포함하며, 선박의 엔진은 DFDE(Dual Fuel Disel Electric) 엔진 등과 같은 저압(약 5~8bar)의 분사엔진, ME-GI 엔진(Man B&W 사의 Gas Injection 엔진)과 같은 고압(약 150~700bar)의 분사엔진 및 중압(약 16~18bar)의 연료가스로 연소가 가능한 중압가스 분사엔진 등을 포함할 수 있다.Demand includes, for example, ship engines, which include low-pressure (approximately 5 to 8 bar) injection engines such as DFDE (Dual Fuel Disel Electric) engines, and ME-GI engines (Man B&W's Gas Injection Engine). It may include a high-pressure (approximately 150-700 bar) injection engine and a medium-pressure gas injection engine capable of combustion with medium-pressure (approximately 16-18 bar) fuel gas.

그러나, 예컨대 수요처에서 필요로 하는 연료소모량보다 많은 연료가 공급되는 경우, 잉여의 연료는 액화되어 저장탱크에 다시 저장된다. 이때, 압축부를 거쳐 압축된 증발가스가 혼합된 연료에는 윤활유가 포함되어, 저장탱크를 오염시킬 수 있다.However, for example, when more fuel is supplied than the fuel consumption required by the consumer, the excess fuel is liquefied and stored back in the storage tank. At this time, the fuel mixed with the boil-off gas compressed through the compression unit contains lubricating oil, which may contaminate the storage tank.

관련된 종래기술로서, 한국공개특허 제10-2015-0061439호(2015.06.04)를 참조하기 바란다.As related prior art, please refer to Korean Patent Publication No. 10-2015-0061439 (2015.06.04).

한국공개특허 제10-2015-0061439호(2015.06.04)Korean Patent Publication No. 10-2015-0061439 (2015.06.04)

본 발명의 실시 예는 저장탱크에 저장되는 수요처에 공급되고 남은 연료를 저장탱크에 다시 저장함에 있어서, 연료에 포함된 윤활유를 효과적으로 제거하여, 저장탱크가 윤활유에 의해 오염되지 않도록 방지할 수 있는 선박연료공급시스템을 제공하고자 한다.An embodiment of the present invention is a ship that can effectively remove the lubricating oil contained in the fuel and prevent the storage tank from being polluted by the lubricating oil in storing the remaining fuel supplied to the demander stored in the storage tank again in the storage tank. We would like to provide a fuel supply system.

본 발명의 일 측면에 따르면, 액화가스 및 이의 증발가스를 저장하는 저장탱크로부터 액화가스를 공급받아 기화시키는 기화기를 마련하며, 상기 기화된 유체를 수요처의 연료로 공급하는 제1공급라인; 상기 저장탱크로부터 상기 증발가스를 공급받아 압축시키는 압축부를 마련하며, 상기 압축부에 의해 압축된 유체를 상기 제1공급라인으로 공급하여 상기 기화기에 의해 기화된 유체와 혼합시키는 제2공급라인; 상기 혼합된 유체 중 일부를 상기 저장탱크로 회수시키는 회수라인; 상기 저장탱크로부터 공급된 액화가스 중 일부를 상기 제1공급라인의 상기 기화기 전단으로부터 분기된 분기라인으로부터 공급받아 상기 회수라인을 통해 공급된 상기 혼합된 유체와 열교환시켜, 상기 혼합된 유체의 온도를 윤활유의 유동점을 기초로 냉각시키는 쿨러; 및 상기 냉각된 유체에 함유된 윤활유를 필터링하는 필터;를 포함하는 선박연료공급시스템이 제공될 수 있다.According to one aspect of the present invention, a vaporizer is provided for vaporizing liquefied gas supplied from a storage tank storing liquefied gas and its boil-off gas, and a first supply line for supplying the vaporized fluid as fuel to the consumer; a second supply line providing a compression unit that receives and compresses the boil-off gas from the storage tank, supplying the fluid compressed by the compression unit to the first supply line and mixing it with the fluid vaporized by the vaporizer; a recovery line that returns some of the mixed fluid to the storage tank; A portion of the liquefied gas supplied from the storage tank is supplied from a branch line branched from the front end of the vaporizer of the first supply line and exchanges heat with the mixed fluid supplied through the recovery line to increase the temperature of the mixed fluid. Cooler that cools the lubricant based on its pour point; And a filter for filtering the lubricant contained in the cooled fluid. A marine fuel supply system including a can be provided.

상기 회수라인에 마련되며, 상기 쿨러로 유입되는 상기 혼합된 유체를 감압시키는 감압밸브를 더 포함할 수 있다.It is provided in the recovery line and may further include a pressure reducing valve that reduces the pressure of the mixed fluid flowing into the cooler.

상기 분기라인에 마련된 조절밸브와, 상기 쿨러를 통과한 상기 냉각된 유체의 온도를 측정하는 온도측정기와, 상기 저장탱크 내부에 마련되며, 상기 저장탱크 내의 액화가스를 펌핑하여 상기 제1공급라인을 통해 토출시키는 내부펌프와, 상기 측정된 온도를 기초로 상기 내부펌프 및 상기 조절밸브 중 하나 이상을 제어하여, 상기 쿨러로 공급되는 액화가스의 양을 조절하는 제어부를 더 포함할 수 있다.A control valve provided in the branch line, a temperature gauge for measuring the temperature of the cooled fluid passing through the cooler, and a temperature gauge provided inside the storage tank, pump the liquefied gas in the storage tank to connect the first supply line. It may further include an internal pump that discharges the liquid through the cooler, and a control unit that controls one or more of the internal pump and the control valve based on the measured temperature to adjust the amount of liquefied gas supplied to the cooler.

본 발명의 실시 예에 따른 선박연료공급시스템은 수요처에 공급되고 남은 연료를 저장탱크에 다시 저장함에 있어서, 연료에 포함된 윤활유를 효과적으로 제거하여, 저장탱크가 윤활유에 의해 오염되지 않도록 방지할 수 있다.The marine fuel supply system according to an embodiment of the present invention can effectively remove the lubricating oil contained in the fuel and prevent the storage tank from being polluted by the lubricating oil when storing the remaining fuel supplied to the customer in the storage tank. .

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

도 1은 본 발명의 실시 예에 따른 선박연료공급시스템을 도시한다.Figure 1 shows a ship fuel supply system according to an embodiment of the present invention.

이하에서는 본 발명의 실시 예들을 첨부 도면을 참조하여 상세히 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1을 참조하면, 본 발명의 실시 예에 따른 선박연료공급시스템(100)은 액화가스 및 이의 증발가스를 저장하는 저장탱크(101)와, 저장탱크(101)로부터 액화가스를 공급받아 기화시키는 기화기(110)를 마련하며, 기화기(110)에 의해 기화된 유체를 수요처(E)의 연료로 공급하는 제1공급라인(L11)과, 저장탱크(101)로부터 증발가스를 공급받아 압축시키는 압축부(120)를 마련하며, 제1공급라인(L11)의 기화기(110) 후단과 연결되어, 압축부(120)에 의해 압축된 유체를 제1공급라인(L11)으로 공급하여 기화기(110)에 의해 기화된 유체와 혼합시키는 제2공급라인(L12)과, 상술한 혼합된 유체 중 일부를 저장탱크(101)로 회수시키는 회수라인(L13)과, 저장탱크(101)로부터 공급된 액화가스 중 일부를 제1공급라인(L11)의 기화기(110) 전단으로부터 분기된 분기라인(L14)으로부터 공급받아 회수라인(L13)을 통해 공급된 혼합된 유체와 열교환시켜, 회수라인(L13)을 통해 공급된 혼합된 유체의 온도를 윤활유의 유동점을 기초로 냉각시키는 쿨러(130)와, 쿨러(130)에 의해 냉각된 유체에 함유된 윤활유를 필터링하는 필터(140)를 포함한다.Referring to Figure 1, the marine fuel supply system 100 according to an embodiment of the present invention includes a storage tank 101 for storing liquefied gas and its boil-off gas, and a storage tank 101 for receiving liquefied gas from the storage tank 101 and vaporizing it. A vaporizer 110 is provided, a first supply line (L11) that supplies the fluid vaporized by the vaporizer 110 as fuel to the consumer (E), and compression that receives boil-off gas from the storage tank 101 and compresses it. A unit 120 is provided, connected to the rear end of the vaporizer 110 of the first supply line (L11), and supplies the fluid compressed by the compression unit 120 to the first supply line (L11) to form the vaporizer 110. A second supply line (L12) for mixing with the fluid vaporized by, a recovery line (L13) for recovering some of the above-mentioned mixed fluid to the storage tank (101), and liquefied gas supplied from the storage tank (101) Some of the fluid is supplied from the branch line (L14) branched from the front end of the vaporizer 110 of the first supply line (L11) and exchanges heat with the mixed fluid supplied through the recovery line (L13). It includes a cooler 130 that cools the temperature of the supplied mixed fluid based on the pour point of the lubricant, and a filter 140 that filters the lubricant contained in the fluid cooled by the cooler 130.

또, 선박연료공급시스템(100)은 회수라인(L13)에 마련되며, 쿨러(130)로 유입되는 혼합된 유체를 감압시키는 감압밸브(V1)를 포함한다.In addition, the marine fuel supply system 100 is provided in the recovery line (L13) and includes a pressure reducing valve (V1) that reduces the pressure of the mixed fluid flowing into the cooler 130.

또, 선박연료공급시스템(100)은 분기라인(L14)에 마련된 조절밸브(V2)와, 쿨러(130)를 통과한 냉각된 유체의 온도를 측정하는 온도측정기(150)와, 저장탱크(101) 내부에 마련되며, 저장탱크(101) 내의 액화가스를 펌핑하여 제1공급라인(L11)을 통해 토출시키는 내부펌프(P1)와, 온도측정기(150)에 의해 측정된 온도를 기초로 내부펌프(P1) 및 조절밸브(V2) 중 하나 이상을 제어하여, 쿨러(130)로 공급되는 액화가스의 양을 조절하는 제어부(160)를 포함한다.In addition, the marine fuel supply system 100 includes a control valve (V2) provided in the branch line (L14), a temperature gauge 150 that measures the temperature of the cooled fluid passing through the cooler 130, and a storage tank 101. ) provided inside, an internal pump (P1) that pumps the liquefied gas in the storage tank (101) and discharges it through the first supply line (L11), and an internal pump based on the temperature measured by the temperature gauge (150) It includes a control unit 160 that controls one or more of (P1) and the control valve (V2) to adjust the amount of liquefied gas supplied to the cooler 130.

본 발명의 실시 예에 따른 선박연료공급시스템(100)은 예컨대 각종 액화연료 운반선, 액화연료 RV(Regasification Vessel), 컨테이너선, 일반상선, LNG FPSO(Floating, Production, Storage and Off-loading), LNG FSRU(Floating Storage and Regasification Unit) 등의 선박에 적용될 수 있다. The marine fuel supply system 100 according to an embodiment of the present invention is, for example, various liquefied fuel carriers, liquefied fuel RV (Regasification Vessel), container ships, general merchant ships, LNG FPSO (Floating, Production, Storage and Off-loading), LNG It can be applied to ships such as FSRU (Floating Storage and Regasification Unit).

이하, 각 구성요소에 대해서 구체적으로 설명한다.Hereinafter, each component will be described in detail.

저장탱크(101)는 단열상태를 유지하면서 연료를 액화상태로 저장하는 멤브레인형 탱크, SPB형 탱크 등을 포함할 수 있다. 저장탱크(101)에 저장된 액화가스는 액화상태로 저장할 수 있는 LNG(Liquefied Natural Gas), LPG(Liquefied Petroleum Gas), DME(Dimethylether), 에탄(Ethane) 중 어느 하나일 수 있으나 이에 한정되는 것은 아니다. The storage tank 101 may include a membrane-type tank or SPB-type tank that stores fuel in a liquefied state while maintaining insulation. The liquefied gas stored in the storage tank 101 may be any one of LNG (Liquefied Natural Gas), LPG (Liquefied Petroleum Gas), DME (Dimethylether), and ethane that can be stored in a liquefied state, but is not limited thereto. .

기화기(110)는 제1공급라인(L11)을 통해 저장탱크(101)로부터 액화가스를 공급받아 수요처(E)의 요구조건에 맞게 기화시킨다.The vaporizer 110 receives liquefied gas from the storage tank 101 through the first supply line (L11) and vaporizes it to meet the requirements of the consumer (E).

압축부(120)는 제2공급라인(L12)을 통해 저장탱크(101)로부터 증발가스를 공급받아 압축시킨다. 압축부(120)는 도시하지는 않았으나 교대로 배치된 하나 이상의 압축기와 냉각기를 포함할 수 있다. 제2공급라인(L12)은 제1공급라인(L11)의 기화기(110) 후단과 연결되어, 압축부(120)에 의해 압축된 유체를 제1공급라인(L11)으로 공급하여 기화기(110)에 의해 기화된 유체와 혼합시킬 수 있다.The compression unit 120 receives boil-off gas from the storage tank 101 through the second supply line (L12) and compresses it. Although not shown, the compression unit 120 may include one or more compressors and coolers arranged alternately. The second supply line (L12) is connected to the rear end of the vaporizer 110 of the first supply line (L11) and supplies the fluid compressed by the compression unit 120 to the first supply line (L11) to form the vaporizer 110. It can be mixed with the vaporized fluid.

이때, 수요처(E)의 연료소모량에 비해 수요처(E)로 공급되는 연료량이 더 많은 경우, 상술한 혼합된 유체 중 일부가 회수라인(L13)을 통해 저장탱크(101)로 회수될 수 있다.At this time, if the amount of fuel supplied to the consumer (E) is greater than the fuel consumption of the consumer (E), some of the above-mentioned mixed fluid may be recovered to the storage tank 101 through the recovery line (L13).

회수라인(L13)에 마련된 감압밸브(V1)는 쿨러(130)로 유입되는 상술한 혼합된 유체를 설정된 값에 따라 감압시킬 수 있다.The pressure reducing valve V1 provided in the recovery line L13 can reduce the pressure of the above-mentioned mixed fluid flowing into the cooler 130 according to a set value.

쿨러(130)는 저장탱크(101)로부터 공급된 액화가스 중 일부를 제1공급라인(L11)의 기화기(110) 전단으로부터 분기된 분기라인(L14)으로부터 공급받아 회수라인(L13)을 통해 공급된 혼합된 유체와 열교환시켜, 해당 혼합된 유체의 온도를 윤활유의 유동점을 기초로 냉각시킨다. 쿨러(130)를 통과한 액화가스와 혼합된 유체는 각각 분기라인(L14) 및 회수라인(L13)을 통해 저장탱크(101)에 저장된다.The cooler 130 receives some of the liquefied gas supplied from the storage tank 101 from the branch line (L14) branched from the front end of the vaporizer 110 of the first supply line (L11) and supplies it through the recovery line (L13). By exchanging heat with the mixed fluid, the temperature of the mixed fluid is cooled based on the pour point of the lubricant. The fluid mixed with the liquefied gas that has passed through the cooler 130 is stored in the storage tank 101 through the branch line (L14) and the recovery line (L13), respectively.

구체적으로, 상술한 압축부(120)는 저장탱크(101)로부터 공급받은 증발가스를 압축 및 냉각시키기 위한 수단들을 포함하고 있고, 예컨대 피스톤 등의 수단들을 작동시키기 위해 윤활유가 공급된다. 이때 압축부(120)에 의해 압축된 증발가스에는 해당 윤활유가 함유될 수 있다. 따라서, 회수라인(L13)을 통해 윤활유가 함유된 연료가 저장탱크(101)에 저장될 경우, 저장탱크(101)가 윤활유에 의해 오염될 수 있다.Specifically, the above-described compression unit 120 includes means for compressing and cooling the boil-off gas supplied from the storage tank 101, and lubricating oil is supplied to operate the means, such as a piston, for example. At this time, the boil-off gas compressed by the compression unit 120 may contain the corresponding lubricant. Therefore, when fuel containing lubricating oil is stored in the storage tank 101 through the recovery line L13, the storage tank 101 may be contaminated by the lubricating oil.

이에 본 발명의 실시 예에서는 저장탱크(101)로부터 공급된 액화가스 중 일부를 분기라인(L14)을 통해 쿨러(130)로 공급하고, 쿨러(130)에서 회수라인(L13)을 통해 공급된 혼합된 유체와 열교환시켜, 해당 혼합된 유체의 온도를 윤활유의 유동점 이하로 떨어뜨린다. 유동점 이하로 떨어진 윤활유는 그 특징상 유동성을 잃고 굳어지게 된다.Accordingly, in an embodiment of the present invention, some of the liquefied gas supplied from the storage tank 101 is supplied to the cooler 130 through the branch line (L14), and the mixture supplied from the cooler 130 through the recovery line (L13) By exchanging heat with the mixed fluid, the temperature of the mixed fluid is lowered below the pour point of the lubricant. Lubricating oil that falls below its pour point loses its fluidity and hardens.

이를 통해 필터(140)는 쿨러(130)에 의해 냉각된 유체에 함유된 윤활유를 효과적으로 필터링하여, 저장탱크(101)로 보낼 수 있게 된다.Through this, the filter 140 can effectively filter the lubricant contained in the fluid cooled by the cooler 130 and send it to the storage tank 101.

한편, 상술한 분기라인(L14)에는 조절밸브(V2)가 마련되어 있으며, 회수라인(L13)의 쿨러(130) 후단에는 쿨러(130)를 통과한 냉각된 유체의 온도를 측정하는 온도측정기(150)가 마련되어 있고, 저장탱크(101) 내부에는 저장탱크(101) 내의 액화가스를 펌핑하여 제1공급라인(L11)을 통해 토출시키는 내부펌프(P1)가 마련되어 있다.Meanwhile, the above-described branch line (L14) is provided with a control valve (V2), and at the rear end of the cooler (130) of the recovery line (L13) is a temperature measuring device (150) that measures the temperature of the cooled fluid that passed through the cooler (130). ) is provided, and an internal pump (P1) is provided inside the storage tank 101 to pump the liquefied gas in the storage tank 101 and discharge it through the first supply line (L11).

상술한 혼합된 유체의 온도를 윤활유의 유동점 이하로 떨어뜨리기 위해, 제어부(160)는 온도측정기(150)에 의해 측정된 온도를 기초로 내부펌프(P1) 및 조절밸브(V2) 중 하나 이상을 제어하여, 쿨러(130)로 공급되는 액화가스의 양을 조절할 수 있다.In order to drop the temperature of the above-mentioned mixed fluid below the pour point of the lubricating oil, the control unit 160 operates one or more of the internal pump (P1) and the control valve (V2) based on the temperature measured by the temperature gauge 150. By controlling, the amount of liquefied gas supplied to the cooler 130 can be adjusted.

예컨대 제어부(160)는 온도측정기(150)에 의해 측정된 온도가 설정값보다 높은 경우, 내부펌프(P1) 및 조절밸브(V2) 중 하나 이상을 제어하여 쿨러(130)로 공급되는 액화가스의 양을 늘려 쿨러(130)를 통과한 혼합된 유체의 온도가 윤활유의 유동점 이하로 유지되도록 제어할 수 있다.For example, when the temperature measured by the temperature measuring device 150 is higher than the set value, the control unit 160 controls one or more of the internal pump (P1) and the control valve (V2) to control the liquefied gas supplied to the cooler 130. By increasing the amount, the temperature of the mixed fluid passing through the cooler 130 can be controlled to be maintained below the pour point of the lubricant.

이상에서는 특정의 실시 예에 대하여 도시하고 설명하였다. 그러나, 본 발명은 상기한 실시 예에만 한정되지 않으며, 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 청구범위에 기재된 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경 실시할 수 있을 것이다.In the above, specific embodiments are shown and described. However, the present invention is not limited to the above-described embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. You will be able to.

101: 저장탱크 110: 기화기
120: 압축부 130: 쿨러
140: 필터 150: 온도측정기
L11: 제1공급라인 L12: 제2공급라인
L13: 회수라인 L14: 분기라인
V1: 감압밸브 V2: 조절밸브
P1: 내부펌프101: storage tank 110: vaporizer
120: compression unit 130: cooler
140: Filter 150: Temperature meter
L11: 1st supply line L12: 2nd supply line
L13: Recovery line L14: Branch line
V1: Pressure reducing valve V2: Control valve
P1: Internal pump

Claims (3)

액화가스 및 이의 증발가스를 저장하는 저장탱크로부터 액화가스를 공급받아 기화시키는 기화기를 마련하며, 상기 기화된 유체를 수요처의 연료로 공급하는 제1공급라인;
상기 저장탱크로부터 상기 증발가스를 공급받아 압축시키는 압축부를 마련하며, 상기 압축부에 의해 압축된 유체를 상기 제1공급라인으로 공급하여 상기 기화기에 의해 기화된 유체와 혼합시키는 제2공급라인;
상기 혼합된 유체 중 일부를 상기 저장탱크로 회수시키는 회수라인;
상기 저장탱크로부터 공급된 액화가스 중 일부를 상기 제1공급라인의 상기 기화기 전단으로부터 분기된 분기라인으로부터 공급받아 상기 회수라인을 통해 공급된 상기 혼합된 유체와 열교환시켜, 상기 혼합된 유체의 온도를 윤활유의 유동점을 기초로 냉각시키는 쿨러; 및
상기 냉각된 유체에 함유된 윤활유를 필터링하는 필터;를 포함하고,
상기 분기라인에 마련된 조절밸브와,
상기 쿨러를 통과한 상기 냉각된 유체의 온도를 측정하는 온도측정기와,
상기 저장탱크 내부에 마련되며, 상기 저장탱크 내의 액화가스를 펌핑하여 상기 제1공급라인을 통해 토출시키는 내부펌프와,
상기 온도측정기에 의한 상기 측정된 온도를 기초로 상기 내부펌프 및 상기 조절밸브 중 하나 이상을 제어하여, 상기 쿨러를 통과한 상기 혼합된 유체의 온도가 윤활유의 유동점 이하가 되도록 상기 쿨러로 공급되는 액화가스의 양을 조절하는 제어부를 더 포함하는 선박연료공급시스템.A first supply line providing a vaporizer that receives liquefied gas from a storage tank storing liquefied gas and its boil-off gas and vaporizes it, and supplies the vaporized fluid as fuel to the customer;
a second supply line providing a compression unit that receives and compresses the boil-off gas from the storage tank, supplying the fluid compressed by the compression unit to the first supply line and mixing it with the fluid vaporized by the vaporizer;
a recovery line that returns some of the mixed fluid to the storage tank;
A portion of the liquefied gas supplied from the storage tank is supplied from a branch line branched from the front end of the vaporizer of the first supply line and exchanges heat with the mixed fluid supplied through the recovery line to increase the temperature of the mixed fluid. Cooler that cools the lubricant based on its pour point; and
It includes a filter that filters the lubricant contained in the cooled fluid,
A control valve provided in the branch line,
a temperature measuring device that measures the temperature of the cooled fluid passing through the cooler;
an internal pump provided inside the storage tank, which pumps the liquefied gas within the storage tank and discharges it through the first supply line;
Liquefaction supplied to the cooler by controlling one or more of the internal pump and the control valve based on the temperature measured by the temperature measuring device so that the temperature of the mixed fluid passing through the cooler is below the pour point of the lubricating oil. A marine fuel supply system further comprising a control unit that regulates the amount of gas. 제1항에 있어서,
상기 회수라인에 마련되며, 상기 쿨러로 유입되는 상기 혼합된 유체를 감압시키는 감압밸브를 더 포함하는 선박연료공급시스템.According to paragraph 1,
A marine fuel supply system provided in the recovery line and further comprising a pressure reducing valve that reduces the pressure of the mixed fluid flowing into the cooler. 삭제delete
KR1020190160404A 2019-12-05 2019-12-05 Fuel supply system of ship KR102631164B1 (en)

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