KR20120123783A - Lng fuel supply system for vessel engine - Google Patents

Lng fuel supply system for vessel engine Download PDF

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Publication number
KR20120123783A
KR20120123783A KR1020110041328A KR20110041328A KR20120123783A KR 20120123783 A KR20120123783 A KR 20120123783A KR 1020110041328 A KR1020110041328 A KR 1020110041328A KR 20110041328 A KR20110041328 A KR 20110041328A KR 20120123783 A KR20120123783 A KR 20120123783A
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South Korea
Prior art keywords
working fluid
lng
fuel
engine
storage tank
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KR1020110041328A
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Korean (ko)
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전영철
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주식회사 유엔에스
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Priority to KR1020110041328A priority Critical patent/KR20120123783A/en
Publication of KR20120123783A publication Critical patent/KR20120123783A/en

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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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • 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
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief 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
    • F02M21/0218—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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/16—Other apparatus for heating fuel
    • F02M31/18—Other apparatus for heating fuel to vaporise fuel
    • F02M31/186—Other apparatus for heating fuel to vaporise fuel with simultaneous mixing of secondary air
    • 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
    • F17C2227/03—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
    • F17C2227/0316—Water 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
    • F17C2265/05—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
    • 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

Abstract

PURPOSE: A LNG fuel supply system for a ship engine is provided to rapidly cope with the required output of the ship engine by controlling the evaporation amount of LNG. CONSTITUTION: A LNG fuel supply system for a ship engine(300) comprises a LNG fuel tank(100), a working fluid storage tank(200), a fuel supply line(L4), a coolant circulation line(L5), a working fluid circulation line(L6), and a heat exchanger(400). The ship engine uses natural gas vaporized by the working fluid storage tank as fuel. The fuel supply line connects the working fluid storage tank and the ship engine, and supplies the vaporized natural gas to the ship engine. The coolant circulation line is connected to the ship engine, and coolants are circulated. The working fluid circulation line is connected to the working fluid storage tank, and the working fluid is circulated. The heat exchanger is connected to the coolant circulation line and working fluid circulation line so that the coolants are heat exchanged with the working fluid.

Description

선박 엔진용 엘엔지 연료 공급시스템{LNG FUEL SUPPLY SYSTEM FOR VESSEL ENGINE}LG FUEL SUPPLY SYSTEM FOR VESSEL ENGINE

본 발명은 선박 엔진의 연료 공급시스템에 관한 것으로서, 특히 LNG를 기화시켜서 연료로 제공할 수 있도록 하기 위한 기술이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply system for a ship engine, and in particular, a technique for vaporizing LNG to provide fuel.

LNG(Liquified natural gas)는 가스전에서 채취한 천연가스를 액화시킨 것을 의미하며, 주성분이 메탄이라는 점에서 LPG와 구별된다. LNG는 압력을 가해 액화시키면 부피가 1/600로 줄어들지만, 메탄의 비점이 －162℃로 낮아 냉각 또는 압축하여 액화시키고, 특수하게 단열된 전용 탱크로 유전지대에서 반출된다.LNG (Liquified natural gas) refers to the liquefaction of natural gas collected from gas fields, and is distinguished from LPG in that the main component is methane. LNG is reduced to 1/600 by liquefaction under pressure, but the boiling point of methane is lowered to -162 ° C to liquefy it by cooling or compressing it, and to take it out of the oil field into a specially insulated dedicated tank.

LNG의 국제적 운송은 LNG 전용선을 이용하게 되며, LNG의 비점이 지극히 낮기 때문에 LNG 저장탱크에 저장되는 LNG는 기화되어 LNG 저장탱크 내부의 압력을 상승시키는 작용을 하게 된다.The international transportation of LNG uses an exclusive LNG carrier, and since the boiling point of LNG is extremely low, LNG stored in the LNG storage tank is vaporized to increase the pressure inside the LNG storage tank.

LNG 저장탱크가 특수하게 제작된다고 하지만 과도한 내부 압력 상승은 선박의 안전에 심각한 위협요인이 될 수 있다. 따라서 LNG 저장탱크 내부에서 발생되는 천연가스를 배출시켜서 엔진 연료로 사용하거나 별도의 연소장치로 보내 태워없애기도 한다.Although LNG storage tanks are specially manufactured, excessive internal pressure buildup can pose a serious threat to the safety of ships. Therefore, natural gas generated in the LNG storage tank is discharged to be used as engine fuel or sent to a separate combustion device for burning.

본 발명과 관련한 종래기술로 대한민국 등록특허번호 제10-0835090호(2008.05.28 등록)의 "LNG 운반선의 연료가스 공급 시스템 및 방법"에 관한 기술이 공지된 바 있다.As a conventional technology related to the present invention, a technology related to a "fuel gas supply system and method of an LNG carrier" of Republic of Korea Patent No. 10-0835090 (registered on May 28, 2008) has been known.

첨부되는 도 1은 종래기술에 대한 구성도로서, LNG 운반선의 LNG 저장탱크(1)로부터 LNG를 빼내어서 고압가스 분사엔진으로 공급하는 연료가스 공급라인(L1)을 설치하고, 이 연료가스 공급라인(L1)의 도중에 LNG를 LNG 저장탱크(1)로부터 빼내어지는 증발가스와 열교환시키는 열교환기(3)를 설치한다.1 is a configuration diagram of the related art, a fuel gas supply line L1 for extracting LNG from an LNG storage tank 1 of an LNG carrier and supplying it to a high-pressure gas injection engine is installed. The heat exchanger 3 which heat-exchanges LNG with the boil-off gas extracted from the LNG storage tank 1 in the middle of L1 is provided.

그리고 연료가스 공급라인 도중에 LNG를 압축하기 위한 압축수단이 마련되며, 압축수단의 하류에 압축된 LNG를 기화시키는 기화수단이 마련된다.A compression means for compressing LNG is provided in the middle of the fuel gas supply line, and vaporization means for vaporizing the compressed LNG downstream of the compression means is provided.

종래기술에서는 LNG를 압축한 후 기화되도록 하고 열교환기는 LNG 저장탱크의 증발가스를 열원으로 이용한다는 특징이 있다.In the prior art, LNG is compressed and then vaporized, and the heat exchanger is characterized by using the boil-off gas of the LNG storage tank as a heat source.

하지만, 압축기를 두어야 하기 때문에 장치가 복잡해지는 문제점이 있으며, LNG 저장탱크 내부에서 발생되는 증발가스를 이용하여 열교환기를 작동시키기 때문에 LNG의 온도를 상황에 따라 적절히 제어할 수 없다는 문제점도 있었다. 즉, 엔진 출력을 급격히 높여야 하는 경우에 LNG의 기화 속도를 빠르게 해야 할 필요가 있으나 종래기술로서는 이러한 목적을 달성하기에 한계가 있다.However, there is a problem in that the apparatus is complicated because the compressor must be placed, and there is a problem in that the temperature of the LNG cannot be properly controlled according to the situation because the heat exchanger is operated using the boil-off gas generated in the LNG storage tank. In other words, when the engine output is to be sharply increased, it is necessary to increase the vaporization rate of LNG, but the prior art has a limitation in achieving such an object.

그리고 종래기술에서는 LNG 저장탱크의 LNG가 소모됨에 따라 LNG 저장탱크의 내부압력이 변화되어 압력 관리가 이루어지지 않게 된다는 문제점이 있다. 반복적으로 LNG 저장탱크의 내부 압력이 급격하게 변하게 되면 LNG 저장탱크에 나쁜 영향을 미칠 수 있기 때문에 LNG 저장탱크의 내부 압력은 일정하게 유지되도록 할 필요성이 있다.
In the related art, as the LNG of the LNG storage tank is consumed, the internal pressure of the LNG storage tank is changed so that pressure management is not performed. Repeated changes in the internal pressure of the LNG storage tank may adversely affect the LNG storage tank, so the internal pressure of the LNG storage tank needs to be kept constant.

1. 대한민국 등록특허번호 제10-0835090호(2008.05.28 등록)1. Republic of Korea Patent No. 10-0835090 (2008.05.28 registration)

따라서 본 발명에 의한 선박 엔진용 LNG 연료 공급시스템은 선박 엔진의 폐열을 이용하여 작동유체 저장조의 작동유체를 열교환기에서 가열되게 하며, 작동유체의 유량 제어를 통해 작동유체 저장조에서 이루어지는 LNG의 기화량을 제어하여 선박 엔진의 요구 출력에 신속하게 대응할 수 있도록 하는 기술을 제공하고자 한다.Therefore, the LNG fuel supply system for a ship engine according to the present invention causes the working fluid of the working fluid reservoir to be heated in the heat exchanger using waste heat of the ship engine, and the amount of vaporization of LNG made in the working fluid reservoir through the flow rate control of the working fluid. To provide a technology that can quickly respond to the required output of the ship engine by controlling the control.

그리고 본 발명은 작동유체 저장조를 이용하여 기화된 LNG의 일부가 다시 LNG 연료탱크로 공급되게 함으로써 LNG 연료탱크의 내부 압력을 일정한 범위에서 관리하여 안정성을 높일 수 있도록 하는 기술을 제공하고자 한다.
In another aspect, the present invention is to provide a technique for improving the stability by managing the internal pressure of the LNG fuel tank in a certain range by allowing a portion of the vaporized LNG is supplied back to the LNG fuel tank using a working fluid storage tank.

제시한 바와 같은 과제 해결을 위한 본 발명의 선박 엔진용 LNG 연료 공급시스템은, LNG가 저장되는 LNG 연료탱크; 상기 LNG 연료탱크와 연결되며 순환될 수 있도록 저장되는 작동유체를 이용하여 LNG를 기화시켜 일부는 엔진 연료로 제공되도록 하고, 또 다른 일부는 상기 LNG 연료탱크로 재공급되도록 하는 작동유체 저장조; 상기 작동유체 저장조에 의해 기화된 천연가스(NG)를 연료로 사용하는 선박 엔진; 상기 작동유체 저장조와 선박 엔진을 연결하여 기화된 천연가스를 선박 엔진으로 공급하는 연료공급라인; 상기 선박 엔진과 연결되어 냉각수가 순환되는 냉각수 순환라인; 상기 작동유체 저장조와 연결되어 상기 작동유체가 순환되는 작동유체 순환라인; 상기 냉각수 순환라인 및 상기 작동유체 순환라인과 연결되어 냉각수와 작동유체가 열교환이 이루어질 수 있도록 하는 열교환기;를 포함하는 것을 특징으로 한다.LNG fuel supply system for a ship engine of the present invention for solving the problems as presented, LNG fuel tank in which LNG is stored; A working fluid storage tank configured to vaporize LNG using a working fluid that is connected to the LNG fuel tank and stored to be circulated so that a portion of the working fuel is provided as an engine fuel, and another part is supplied back to the LNG fuel tank; A marine engine using natural gas (NG) vaporized by the working fluid storage tank as a fuel; A fuel supply line connecting the working fluid storage tank and the ship engine to supply vaporized natural gas to the ship engine; A cooling water circulation line connected to the ship engine and circulating cooling water; A working fluid circulation line connected to the working fluid reservoir to circulate the working fluid; And a heat exchanger connected to the cooling water circulation line and the working fluid circulation line to allow heat exchange between the cooling water and the working fluid.

그리고 본 발명에서 상기 작동유체 저장조는, 상기 LNG 연료탱크와 연결되는 제1공급라인을 통해 유입되는 LNG를 기화시켜 엔진 연료로 제공하며, 상기 LNG 연료탱크와 연결되는 제2공급라인을 통해 유입되는 LNG는 기화된 후 재순환라인을 따라 상기 LNG 연료탱크의 내부 공간으로 공급되도록 하는 것을 특징으로 한다.In the present invention, the working fluid storage tank, vaporizes the LNG introduced through the first supply line connected to the LNG fuel tank to provide the engine fuel, and is introduced through the second supply line connected to the LNG fuel tank. The LNG is characterized in that to be supplied to the internal space of the LNG fuel tank after the vaporization along the recycle line.

그리고 본 발명에서 상기 작동유체는, 물과 글리콜(GLYCOL)이 혼합된 글리콜 워터인 것을 특징으로 한다.And in the present invention, the working fluid is characterized in that the glycol water is a mixture of water and glycol (GLYCOL).

그리고 본 발명에서 상기 작동유체는, 상기 작동유체 저장조와 상기 열교환기를 연결하는 작동유체 순환라인을 따라 이동되며, 상기 작동유체 순환라인에 상기 작동유체의 유량을 제어하는 제어밸브가 마련되고, 상기 제어밸브를 이용한 상기 작동유체의 유량제어를 통해 상기 작동유체 저장조에서 이루어지는 LNG의 기화량을 제어하도록 하는 것을 특징으로 한다.And in the present invention, the working fluid is moved along the working fluid circulation line connecting the working fluid reservoir and the heat exchanger, a control valve for controlling the flow rate of the working fluid is provided in the working fluid circulation line, the control It characterized in that to control the amount of vaporization of the LNG made in the working fluid storage tank through the flow rate control of the working fluid using a valve.

그리고 본 발명에서 상기 선박 엔진은, 초기 기동시 가솔린이나 경유를 연료로 하고, 상기 선박 엔진의 온도가 상승된 후에는 천연가스(NG)를 연료로 하여 작동되는 것을 특징으로 한다.
In the present invention, the marine engine is operated by using gasoline or light oil as a fuel during initial start-up, and after the temperature of the marine engine is increased, natural gas (NG) is operated as a fuel.

본 발명에 의한 선박 엔진용 LNG 연료 공급시스템은 선박 엔진의 폐열을 활용한다는 효과가 있고, 열교환기에 의해 가열되는 작동유체 저장조의 작동유체의 유량 제어를 통해 LNG의 기화량을 제어함으로써 선박 엔진의 요구출력에 신속하게 대응하여 연료를 공급할 수 있다는 효과가 있다.LNG fuel supply system for ship engines according to the present invention has the effect of utilizing the waste heat of the ship engine, the demand of the ship engine by controlling the vaporization amount of the LNG through the flow rate control of the working fluid of the working fluid storage tank heated by the heat exchanger There is an effect that the fuel can be supplied in quick response to the output.

그리고 기화되는 LNG의 일부를 LNG 연료탱크로 공급되게 하여 LNG 연료탱크의 내부압력을 일정범위에서 관리하여 안전성을 높일 수 있다는 효과도 있다.
In addition, by supplying a portion of the vaporized LNG to the LNG fuel tank there is an effect that can increase the safety by managing the internal pressure of the LNG fuel tank in a certain range.

도 1은 종래기술인 LNG 운반선의 연료가스 공급 시스템 및 방법에 대한 구성도.
도 2는 본 발명의 일 실시예에 따른 선박 엔진용 LNG 연료 공급시스템의 개념도.1 is a configuration diagram for a fuel gas supply system and method of a conventional LNG carrier.
2 is a conceptual diagram of an LNG fuel supply system for a ship engine according to an embodiment of the present invention.

아래에서는 첨부한 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 부여하였다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

명세서 전체에서 어떤 부분이 어떤 구성요소를 "포함" 한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.
Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise.

첨부되는 도 2는 본 발명의 일 실시예에 따른 선박 엔진용 LNG 연료 공급시스템의 개념도이다.2 is a conceptual diagram of a LNG fuel supply system for a ship engine according to an embodiment of the present invention.

도시된 바와 같이 본 발명에 의한 선박 엔진용 LNG 연료 시스템은 LNG 연료탱크(100), 작동유체 저장조(200), 선박 엔진(300) 및 열교환기(400)를 포함한다.As shown, the LNG fuel system for a ship engine according to the present invention includes an LNG fuel tank 100, a working fluid reservoir 200, a ship engine 300, and a heat exchanger 400.

물론 본 선박 엔진용 LNG 연료 공급시스템을 제어하기 위한 제어부(500)가 마련되며, 제어부(500)에 의해 작동유체 저장조(200), 판형 열교환기(400)의 작동, LNG 연료탱크(100)로부터의 LNG의 배출, 선박 엔진(300)으로의 기화된 LNG의 공급 등이 자동 제어된다.Of course, the control unit 500 for controlling the LNG fuel supply system for the ship engine is provided, the operation fluid storage tank 200, the operation of the plate heat exchanger 400, the LNG fuel tank 100 by the control unit 500 The discharge of LNG, the supply of vaporized LNG to the ship engine 300, etc. are automatically controlled.

LNG 연료탱크(100)는 특수하게 제작된 것으로 기본적으로 LNG를 저장하여 선박 엔진(300) 연료로 배출될 수 있도록 한다. 바람직하게 LNG 연료탱크(100)로 LNG를 주입하기 위한 벙커링 시스템이 결합될 수 있다.The LNG fuel tank 100 is specially manufactured to basically store LNG so that the ship engine 300 can be discharged as fuel. Preferably a bunkering system for injecting LNG into the LNG fuel tank 100 may be combined.

작동유체 저장조(200)는 LNG 연료탱크(100)와 연결되며, LNG 연료탱크(100)에 저장된 LNG가 작동유체 저장조(200)로 유입되어 기체 상태의 천연가스(NG)로 상변화하게 된다.The working fluid storage tank 200 is connected to the LNG fuel tank 100, and the LNG stored in the LNG fuel tank 100 flows into the working fluid storage tank 200 to be phase-changed into gaseous natural gas NG.

작동유체 저장조(200)로 유입되는 LNG는 기화되고, 기화된 천연가스(NG)의 일부는 선박 엔진(300) 연료로 제공되고, 또 다른 일부 천연가스는 LNG 연료탱크(100)로 재공급된다.The LNG flowing into the working fluid reservoir 200 is vaporized, a part of the vaporized natural gas (NG) is provided as a fuel for the ship engine 300, and another part of natural gas is resupplied to the LNG fuel tank (100). .

작동유체 저장조(200)는 액상의 LNG를 기상의 천연가스(NG)로 만들기 위한 것이며, LNG 연료탱크(100)와 작동유체 저장조(200)는 제1공급라인(L1), 제2공급라인(L2) 및 재순환라인(L3)에 의해 연결된다.The working fluid storage tank 200 is for making the liquid LNG into gaseous natural gas (NG), and the LNG fuel tank 100 and the working fluid storage tank 200 are provided with a first supply line L1 and a second supply line ( L2) and recycling line L3.

제1공급라인(L1)은 LNG 연료탱크(100)의 상부로 연결되어 LNG를 작동유체 저장조(200)로 유입되도록 하며, 제1공급라인(L1)을 통해 공급되는 LNG는 작동유체 저장조(200)에 의해 기화된 후 엔진 연료로 제공된다. 기화된 천연가스는 연료공급라인(L4)을 통해 선박 엔진(300)으로 제공된다.The first supply line (L1) is connected to the upper portion of the LNG fuel tank 100 to allow LNG to flow into the working fluid storage tank 200, the LNG supplied through the first supply line (L1) is a working fluid storage tank 200 Is vaporized and provided as engine fuel. The vaporized natural gas is provided to the ship engine 300 through the fuel supply line (L4).

즉, 제1공급라인(L1)과 연료공급라인(L4)은 작동유체 저장조(200) 내부의 내부관(210)과 각각 연결되어 LNG가 내부관(210)을 거치면서 NG로 변화되어 연료공급라인(L4)으로 공급된다.That is, the first supply line (L1) and the fuel supply line (L4) is connected to the inner tube 210 inside the working fluid storage tank 200, respectively, LNG is changed to NG while passing through the inner tube 210 to supply fuel It is supplied to the line L4.

바람직하게 제1공급라인(L1)과 연료공급라인(L4)에는 LNG 또는 NG의 흐름을 단속하거나 유량을 제어할 수 있는 제어밸브(V)가 마련되며, 이들 제어밸브(V)는 제어부(500)에 의해 개폐여부 및 개폐정도가 제어된다.Preferably, the first supply line (L1) and the fuel supply line (L4) is provided with a control valve (V) for controlling the flow of LNG or NG or to control the flow rate, these control valve (V) is a control unit 500 Opening and closing is controlled by

본 실시예에서 LNG 연료탱크(100)의 하부와 작동유체 저장조(200)를 연결시키는 제2공급라인(L2)이 마련되는 것으로 하며, 재순환라인(L3)은 작동유체 저장조(200)와 LNG 연료탱크(100)의 상부가 연결되도록 마련된다.In the present embodiment, a second supply line L2 connecting the lower portion of the LNG fuel tank 100 and the working fluid storage tank 200 is provided, and the recirculation line L3 is the working fluid storage tank 200 and the LNG fuel. The upper portion of the tank 100 is provided to be connected.

한편, 작동유체 저장조(200)의 내부에는 제2공급라인(L2)과 재순환라인(L3)을 연결되게 하는 보조 내부관(220)이 마련된다. 내부관(210)과 보조 내부관(220)은 서로 독립적이며, 제2공급라인(L2)을 따라 유입되는 LNG는 보조 내부관(220)을 거치면서 기화되어 NG가 되어 재순환라인(L3)을 통해 NG는 LNG 연료탱크(100)로 공급되어 LNG 연료탱크(100)의 내부 압력이 일정범위에서 관리될 수 있도록 한다.Meanwhile, an auxiliary inner tube 220 is provided inside the working fluid storage tank 200 to connect the second supply line L2 and the recirculation line L3. The inner tube 210 and the auxiliary inner tube 220 are independent of each other, and LNG flowing along the second supply line L2 is vaporized while passing through the auxiliary inner tube 220 to become NG, thereby recycling the recycle line L3. Through the NG is supplied to the LNG fuel tank 100 so that the internal pressure of the LNG fuel tank 100 can be managed in a certain range.

제2공급라인(L2)이나 재순환라인(L3)에도 제어밸브(V)를 마련하여 제어부(500)에 의해 제어밸브(V)의 개폐여부나 개폐정도가 조정될 수 있도록 한다. 예를 들어 LNG 연료탱크(100)의 내부압력이 급격히 떨어지는 경우에는 제어밸브(V)를 최대한 열어 LNG 연료탱크(100) 내부로 NG가 많이 공급될 수 있도록 하는 것과 같다. 바람직하게 LNG 연료탱크(100)에는 내부 압력을 측정할 수 있는 압력측정기를 마련하여 제어부(500)로 LNG 연료탱크(100)의 내부 압력치가 제공될 수 있도록 한다.The control valve (V) is also provided in the second supply line (L2) or the recirculation line (L3) so that the opening and closing or the degree of opening and closing of the control valve (V) can be adjusted by the control unit (500). For example, when the internal pressure of the LNG fuel tank 100 drops sharply, the control valve V is opened as much as possible so that a large amount of NG can be supplied into the LNG fuel tank 100. Preferably, the LNG fuel tank 100 may be provided with a pressure measuring instrument capable of measuring the internal pressure so that the internal pressure of the LNG fuel tank 100 may be provided to the controller 500.

선박 엔진(300)은 작동유체 저장조(200)에 의해 기화된 천연가스(NG)를 연료로 사용하게 되며, 연료공급라인(L4)을 통해 작동유체 저장조(200)와 연결된다.The marine engine 300 uses natural gas NG vaporized by the working fluid storage tank 200 as a fuel, and is connected to the working fluid storage tank 200 through the fuel supply line L4.

바람직하게 선박 엔진(300)은 천연가스를 연료로 사용할 수 있지만 가솔린이나 경유를 연소시켜서 작동될 수도 있는 것으로 한다. 즉, 초기 기동시에는 가솔린이나 경유를 연료로 사용하도록 하고, 어느 정도 선박 엔진이 가열된 후에는 천연가스를 연료로 사용하도록 한다.Preferably, the ship engine 300 may use natural gas as fuel, but may operate by burning gasoline or diesel. In other words, gasoline or diesel is used as fuel during initial startup, and natural gas is used as fuel after the vessel engine is heated to some extent.

작동유체 저장조(200)는 소정의 온도로 가열되는 작동유체에 의해 작동유체 저장조(200)로 유입되는 LNG를 천연가스인 NG로 기화시키게 된다.The working fluid storage tank 200 vaporizes the LNG flowing into the working fluid storage tank 200 by NG which is natural gas by the working fluid heated to a predetermined temperature.

본 발명의 실시예에서 작동유체를 가열시키기 위한 수단으로 열교환기(400)를 두는 것으로 한다. 특히, 열교환기(400)는 선박 엔진(300)의 폐열을 이용하여 작동유체의 온도를 상승시키도록 한다.In the embodiment of the present invention it is assumed that the heat exchanger 400 as a means for heating the working fluid. In particular, the heat exchanger 400 to increase the temperature of the working fluid using the waste heat of the ship engine (300).

바람직하게 열교환기(400)는 판형 열교환기가 적합하며, 선박 엔진(300)의 냉각수가 열교환기(400) 내부를 거쳐서 순환되도록 냉각수 순환라인(L5)이 마련된다. 또한 열교환기(400)에는 작동유체 저장조(200)와 연결되는 작동유체 순환라인(L6)이 마련된다.Preferably, the heat exchanger 400 is suitable for a plate heat exchanger, the cooling water circulation line (L5) is provided so that the cooling water of the ship engine 300 is circulated through the heat exchanger (400). In addition, the heat exchanger 400 is provided with a working fluid circulation line (L6) connected to the working fluid reservoir (200).

냉각수 순환라인(L5)에는 고온의 냉각수가 흐르게 되며, 작동유체 순환라인(L6)에는 상대적으로 저온인 작동유체가 흐르게 된다. 따라서 열교환기(400) 내부에서 열교환을 통해 작동유체는 열을 흡수하여 가열된 후 작동유체 저장조(200) 내부로 공급된다.High temperature cooling water flows through the cooling water circulation line L5, and a relatively low temperature working fluid flows through the working fluid circulation line L6. Therefore, the working fluid absorbs heat and is heated through heat exchange in the heat exchanger 400 and then supplied into the working fluid storage tank 200.

작동유체로는 물이 사용될 수 있지만 본 실시예의 경우 글리콜 워터(Glycol Water)를 이용하는 것으로 한다. 글리콜 워터는 물에 약 50%의 글리콜이 혼합된 것과 같은 것을 의미한다. 글리콜 워터는 열전달 특성이 우수하기 때문에 작동유체로 매우 적합하다.Water may be used as the working fluid, but in the present embodiment, glycol water is used. Glycol water means something like about 50% glycol mixed in water. Glycol water is very suitable as a working fluid because of its excellent heat transfer characteristics.

본 발명의 열교환기(400)는 선박 엔진(300)의 폐열을 이용하여 작동유체를 가열하기 때문에 불필요한 에너지 소비를 줄일 수 있도록 한다는 장점이 있다.The heat exchanger 400 of the present invention has an advantage of reducing unnecessary energy consumption because it heats the working fluid using the waste heat of the ship engine 300.

또한, 냉각수 순환라인(L5)과 작동유체 순환라인(L6)에도 제어밸브(V)를 마련하여 냉각수나 작동유체의 유량을 제어할 수 있도록 한다.In addition, the control valve (V) is provided in the cooling water circulation line (L5) and the working fluid circulation line (L6) to control the flow rate of the cooling water or the working fluid.

특히, 본 발명의 실시예의 경우 작동유체의 유량을 조정하는 것으로 작동유체 저장조(200)에서 이루어지는 LNG의 기화정도를 제어할 수 있다.In particular, in the embodiment of the present invention by adjusting the flow rate of the working fluid it is possible to control the degree of vaporization of the LNG made in the working fluid storage tank 200.

즉, 선박 엔진(300)의 출력을 급격히 높여야 하는 경우 최대한 LNG가 빠르게 NG로 상변화되어 연료공급라인(L4)을 통해 신속하게 공급되어야 한다.That is, when the output of the ship engine 300 is to be sharply increased, the LNG should be rapidly changed to NG as quickly as possible and be supplied quickly through the fuel supply line L4.

이 경우 작동유체 순환라인(L6)의 제어밸브(V)를 최대한 열어 작동유체의 유량이 최대가 되게 하며, 열교환기(400)에서의 열교환도 최대가 될 수 있도록 냉각수 순환라인(L5)의 제어밸브(V)도 열어 냉각수도 빠르게 순환될 수 있도록 한다.In this case, the control valve V of the working fluid circulation line L6 is opened to the maximum to maximize the flow rate of the working fluid, and the control of the cooling water circulation line L5 so that the heat exchange in the heat exchanger 400 can be maximized. Open the valve (V) to allow the coolant to circulate quickly.

열교환기(400)를 거치면서 작동유체의 온도는 빠르게 상승되며, 가열된 작동유체는 작동유체 저장조(200)로 공급되어 LNG의 기화속도가 증가되도록 한다.The temperature of the working fluid is rapidly increased while passing through the heat exchanger 400, the heated working fluid is supplied to the working fluid reservoir 200 to increase the vaporization rate of LNG.

이 경우 제1공급라인(L1)의 제어밸브(V)도 최대로 열어 LNG의 공급량을 늘리도록 하면 선박 엔진(300)이 필요로 하는 출력에 적당한 천연가스를 신속하게 공급할 수 있게 된다.In this case, when the control valve V of the first supply line L1 is also opened to the maximum to increase the amount of LNG supplied, the ship engine 300 can quickly supply suitable natural gas to the output required.

본 발명의 실시예에서 제1공급라인(L1), 제2공급라인(L2), 재순환라인(L3), 연료공급라인(L4), 냉각수 순환라인(L5), 작동유체 순환라인(L6)에는 다양한 측정센서가 부착될 수 있으며, 소정의 펌프와 같은 강제 이송수단이 마련될 수도 있다. 이러한 부분은 공지의 기술인 바 상세한 설명은 생략하는 것으로 한다. 즉, 각종센서나 펌프와 같은 기타 구성요소는 본 발명의 실시 상황에 따라 선택적으로 부가될 수 있는 것이다. 각종 센서로는 온도센서, 압력센서, 유량센서 등과 같은 것을 의미한다.In the embodiment of the present invention, the first supply line (L1), the second supply line (L2), the recirculation line (L3), the fuel supply line (L4), the cooling water circulation line (L5), the working fluid circulation line (L6) Various measuring sensors may be attached, and a forced conveying means such as a predetermined pump may be provided. This part is well known in the art and detailed description thereof will be omitted. That is, other components such as various sensors or pumps may be selectively added according to the embodiment of the present invention. Various sensors mean such things as temperature sensor, pressure sensor, flow sensor.

그리고 제어부(500)는 본 발명에 의한 선박 엔진용 LNG 연료 시스템을 전체적으로 자동 콘트롤하게 되며, 제어부(500)로 입력되는 각종 데이타와 기 설정된 조건 등을 바탕으로 하여 각종 제어밸브(V)의 제어를 통해 선박 엔진(300)에 적절한 양의 천연가스를 연료로 공급할 수 있도록 한다.
The control unit 500 automatically controls the LNG fuel system for ship engines according to the present invention as a whole, and controls various control valves V based on various data and preset conditions input to the control unit 500. Through the ship engine 300 to be able to supply the appropriate amount of natural gas as fuel.

전술한 본 발명의 설명은 예시를 위한 것이며, 본 발명이 속하는 기술분야의 통상의 지식을 가진 자는 본 발명의 기술적 사상이나 필수적인 특징을 변경하지 않고서 다른 구체적인 형태로 쉽게 변형이 가능하다는 것을 이해할 수 있을 것이다.The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be.

그러므로 이상에서 기술한 실시예들은 모든 면에서 예시적인 것일 뿐 한정적이 아닌 것으로 이해되어야만 한다. 예를 들어, 단일형으로 설명되어 있는 각 구성 요소는 분산되어 실시될 수도 있으며, 마찬가지로 분산된 것으로 설명되어 있는 구성 요소들도 결합된 형태로 실시될 수 있다.It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 모든 변경 또는 변형된 형태가 본 발명의 범위에 포함되는 것으로 해석되어야 한다.
The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

본 발명은 LNG 전용선이나 기타 LNG를 연료로 사용하는 선박에 이용될 수 있다.
The present invention can be used in a ship dedicated to LNG or other LNG as fuel.

100 : LNG 연료탱크 200 : 작동유체 저장조
210 : 내부관 220 : 보조 내부관
300 : 선박 엔진 400 : 열교환기
500 : 제어부 L1 : 제1공급라인
L2 : 제2공급라인 L3 : 재순환라인
L4 : 연료공급라인 L5 : 냉각수 순환라인
L6 : 작동유체 순환라인 V : 제어밸브100: LNG fuel tank 200: working fluid storage tank
210: inner tube 220: auxiliary inner tube
300: ship engine 400: heat exchanger
500: control unit L1: first supply line
L2: Second Supply Line L3: Recirculation Line
L4: Fuel Supply Line L5: Cooling Water Circulation Line
L6: working fluid circulation line V: control valve

Claims (5)

선박 엔진용 LNG 연료 공급시스템으로서,
LNG가 저장되는 LNG 연료탱크;
상기 LNG 연료탱크와 연결되며 순환될 수 있도록 저장되는 작동유체를 이용하여 LNG를 기화시켜 일부는 엔진 연료로 제공되도록 하고, 또 다른 일부는 상기 LNG 연료탱크로 재공급되도록 하는 작동유체 저장조;
상기 작동유체 저장조에 의해 기화된 천연가스(NG)를 연료로 사용하는 선박 엔진;
상기 작동유체 저장조와 선박 엔진을 연결하여 기화된 천연가스를 선박 엔진으로 공급하는 연료공급라인;
상기 선박 엔진과 연결되어 냉각수가 순환되는 냉각수 순환라인;
상기 작동유체 저장조와 연결되어 상기 작동유체가 순환되는 작동유체 순환라인;
상기 냉각수 순환라인 및 상기 작동유체 순환라인과 연결되어 냉각수와 작동유체가 열교환이 이루어질 수 있도록 하는 열교환기;를 포함하는 것을 특징으로 하는 선박 엔진용 엘엔지 연료 공급시스템.LNG fuel supply system for ship engines,
LNG fuel tank in which LNG is stored;
A working fluid storage tank configured to vaporize LNG using a working fluid that is connected to the LNG fuel tank and stored to be circulated so that a portion of the working fuel is provided as an engine fuel, and another part is supplied back to the LNG fuel tank;
A marine engine using natural gas (NG) vaporized by the working fluid storage tank as a fuel;
A fuel supply line connecting the working fluid storage tank and the ship engine to supply vaporized natural gas to the ship engine;
A cooling water circulation line connected to the ship engine and circulating cooling water;
A working fluid circulation line connected to the working fluid reservoir to circulate the working fluid;
And a heat exchanger connected to the cooling water circulation line and the working fluid circulation line to exchange heat between the cooling water and the working fluid. 제 1 항에 있어서,
상기 작동유체 저장조는,
상기 LNG 연료탱크와 연결되는 제1공급라인을 통해 유입되는 LNG를 기화시켜 엔진 연료로 제공하며,
상기 LNG 연료탱크와 연결되는 제2공급라인을 통해 유입되는 LNG는 기화된 후 재순환라인을 따라 상기 LNG 연료탱크의 내부 공간으로 공급되도록 하는 것을 특징으로 하는 선박 엔진용 엘엔지 연료 공급시스템.The method of claim 1,
The working fluid reservoir,
Vaporizing LNG flowing through the first supply line connected to the LNG fuel tank and providing the engine fuel;
LNG supplied through the second supply line connected to the LNG fuel tank is LNG fuel supply system for a ship engine, characterized in that to be supplied to the inner space of the LNG fuel tank along the recycle line. 제 1 항 또는 제 2 항에 있어서,
상기 작동유체는,
물과 글리콜(GLYCOL)이 혼합된 글리콜 워터인 것을 특징으로 하는 선박 엔진용 엘엔지 연료 공급시스템.The method according to claim 1 or 2,
The working fluid is
LENG fuel supply system for ship engines, characterized in that the water is mixed with glycol (GLYCOL). 제 1 항 또는 제 2 항에 있어서,
상기 작동유체는,
상기 작동유체 저장조와 상기 열교환기를 연결하는 작동유체 순환라인을 따라 이동되며, 상기 작동유체 순환라인에 상기 작동유체의 유량을 제어하는 제어밸브가 마련되고, 상기 제어밸브를 이용한 상기 작동유체의 유량제어를 통해 상기 작동유체 저장조에서 이루어지는 LNG의 기화량을 제어하도록 하는 것을 특징으로 하는 선박 엔진용 엘엔지 연료 공급시스템.The method according to claim 1 or 2,
The working fluid is
A control valve which is moved along a working fluid circulation line connecting the working fluid reservoir and the heat exchanger, and controls a flow rate of the working fluid in the working fluid circulation line, and controls the flow rate of the working fluid using the control valve L engine fuel supply system for a ship engine, characterized in that for controlling the amount of vaporization of the LNG made in the working fluid storage tank through. 제 1 항 또는 제 2 항에 있어서,
상기 선박 엔진은,
초기 기동시 가솔린이나 경유를 연료로 하고, 상기 선박 엔진의 온도가 상승된 후에는 천연가스(NG)를 연료로 하여 작동되는 것을 특징으로 하는 선박 엔진용 엘엔지 연료 공급시스템.The method according to claim 1 or 2,
The ship engine,
L engine fuel supply system for a marine engine, characterized in that the operation is operated by using gasoline or light oil as a fuel at the time of initial start-up, and after the temperature of the vessel engine is raised to natural gas (NG).
KR1020110041328A 2011-05-02 2011-05-02 Lng fuel supply system for vessel engine KR20120123783A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101313161B1 (en) * 2012-05-31 2013-09-30 삼성중공업 주식회사 Apparatus for supplying glycol water
CN103343718A (en) * 2013-06-25 2013-10-09 上海佳豪船舶工程设计股份有限公司 LNG fuel main engine waste heat utilization system of LNG fuel power ship
CN103707738A (en) * 2014-01-10 2014-04-09 辽宁石油化工大学 Method and device for recovering LNG cold energy for automobile air conditioner system
KR101394813B1 (en) * 2013-03-20 2014-05-14 현대중공업 주식회사 A fuel gas supply system of liquefied natural gas
KR20150088514A (en) 2014-01-24 2015-08-03 대우조선해양 주식회사 Fuel Tank Module and Fuel Supply System Using The Same for LNG Fuelled Marine Vessel
CN114109659A (en) * 2021-11-26 2022-03-01 招商局重工(深圳)有限公司 LPG fuel pipeline control method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101313161B1 (en) * 2012-05-31 2013-09-30 삼성중공업 주식회사 Apparatus for supplying glycol water
KR101394813B1 (en) * 2013-03-20 2014-05-14 현대중공업 주식회사 A fuel gas supply system of liquefied natural gas
CN103343718A (en) * 2013-06-25 2013-10-09 上海佳豪船舶工程设计股份有限公司 LNG fuel main engine waste heat utilization system of LNG fuel power ship
CN103343718B (en) * 2013-06-25 2016-06-01 上海佳豪船舶工程设计股份有限公司 The LNG fuel main UTILIZATION OF VESIDUAL HEAT IN system of a kind of LNG fuels and energy boats and ships
CN103707738A (en) * 2014-01-10 2014-04-09 辽宁石油化工大学 Method and device for recovering LNG cold energy for automobile air conditioner system
KR20150088514A (en) 2014-01-24 2015-08-03 대우조선해양 주식회사 Fuel Tank Module and Fuel Supply System Using The Same for LNG Fuelled Marine Vessel
CN114109659A (en) * 2021-11-26 2022-03-01 招商局重工(深圳)有限公司 LPG fuel pipeline control method
CN114109659B (en) * 2021-11-26 2022-12-16 招商局重工(深圳)有限公司 LPG fuel pipeline control method

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