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KR20120005780A - High pressure tank fuel supply system of marine double fuel engine - Google Patents

High pressure tank fuel supply system of marine double fuel engine Download PDF

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KR20120005780A
KR20120005780A KR1020100066434A KR20100066434A KR20120005780A KR 20120005780 A KR20120005780 A KR 20120005780A KR 1020100066434 A KR1020100066434 A KR 1020100066434A KR 20100066434 A KR20100066434 A KR 20100066434A KR 20120005780 A KR20120005780 A KR 20120005780A
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South Korea
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engine
pressure tank
natural gas
high pressure
vaporizer
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KR101756259B1 (en
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유홍성
유경남
서준열
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대우조선해양 주식회사
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    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
    • 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
    • F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
    • F02M31/10—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture by hot liquids, e.g. lubricants or cooling water
    • 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)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

본 발명은 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템에 관한 것으로, 더욱 상세하게는 기관의 냉각수 폐열을 천연가스를 기화시키는 데 사용하므로 에너지 효율을 향상시킨 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템에 관한 것이다.
본 발명은 적어도 20 bar 이상의 압력을 견딜 수 있도록 설계된 고압탱크와; 상기 고압탱크에서 공급된 천연가스를 기화시키는 기화기와; 상기 기화기에서 기화된 천연가스의 미스트를 제거하기 위한 디미스터와; 상기 디미스터에서 미스트가 제거된 천연가스를 기관에 공급하는 가스밸브 유닛과; 상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 기화기의 천연가스를 기화시킬 수 있도록 구비된 열교환수단을 포함하는 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공한다.The present invention relates to a high pressure tank fuel supply system of a marine double fuel use engine, and more particularly, to supply high pressure tank fuel of a marine double fuel use engine to improve energy efficiency since the cooling water waste heat of the engine is used to vaporize natural gas. It's about the system.
The present invention is a high pressure tank designed to withstand pressure of at least 20 bar; A vaporizer for vaporizing the natural gas supplied from the high pressure tank; A demister for removing mist of natural gas vaporized in the vaporizer; A gas valve unit for supplying a natural gas from which mist is removed from the demister to an engine; It provides a high-pressure tank fuel supply system of a marine dual fuel use engine including a heat exchange means provided to vaporize the natural gas of the vaporizer by using the engine exhaust water heated up through the cooling water jacket of the engine.

Figure P1020100066434
Figure P1020100066434

Description

선박용 이중연료 사용기관의 고압탱크 연료공급 시스템{Fuel feed system of dual fuel engine for ship}Fuel feed system of dual fuel engine for ships

본 발명은 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템에 관한 것으로, 더욱 상세하게는 기관의 냉각수 폐열을 천연가스를 기화시키는 데 사용하므로 에너지 효율을 향상시킨 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템에 관한 것이다.The present invention relates to a high pressure tank fuel supply system of a marine double fuel use engine, and more particularly, to supply high pressure tank fuel of a marine double fuel use engine to improve energy efficiency since the cooling water waste heat of the engine is used to vaporize natural gas. It's about the system.

일반적으로 선박용 기관(Engine)은 큰 출력을 얻을 수 있기 때문에 디젤 기관이 주로 사용되고 있다. In general, a diesel engine is mainly used because a marine engine can obtain a large output.

하지만 디젤 기관의 경우 가솔린 기관이나 가스 기관보다 배기가스의 배출량이 많을 뿐만 아니라 배기가스에 섞여 배출되는 NOx 또는 SOx 등에 의해 환경오염을 발생시키는 문제점이 있다.However, in the case of diesel engines, there are problems in that environmental pollution is generated due to NOx or SOx discharged in the exhaust gas as well as more emissions than gasoline engines or gas engines.

아울러 디젤 기관에 사용되는 경유 또는 중유는 액화천연가스(LPG) 보다는 고가이므로 경제적으로 불리하다.In addition, light oil or heavy oil used in diesel engines is economically disadvantageous because it is more expensive than liquefied natural gas (LPG).

따라서 하나의 기관으로 디젤 기관과 가스 기관을 동시에 사용할 수 있는 이중연료 사용기관이 개발되었다.Therefore, a dual fuel user engine has been developed that can use a diesel engine and a gas engine simultaneously as one engine.

이러한 이중연료 사용기관은 경유나 중유를 보관하기 위한 탱크 이외에 천연가스를 저장하기 위한 별도의 탱크가 필요하다. Such dual fuel users need a separate tank for storing natural gas in addition to a tank for storing light oil or heavy oil.

특히 소형 선박의 경우 공간이 부족하기 때문에 공간을 절약하기 위하여 천연가스를 고압으로 저장하기 위한 별도의 압력용기로 이루어진 탱크가 필요하다.In particular, in the case of a small ship, a space consisting of a pressure vessel for storing natural gas at a high pressure is required in order to save space.

이 탱크에 천연가스를 액화한 상태로 수용하고 필요한 양만큼 기화기(Vaporizer)에서 기화시켜 기관에 공급해야 한다. The tanks should be liquefied with natural gas and vaporized in vaporizers to the engine as needed.

하지만 기관을 구동시키기 위하여 액화상태의 천연가스를 지속적으로 기화시켜야 하는데 이 때 상당한 양의 에너지가 소요되는 문제점이 있다.
However, in order to drive the engine, the natural gas of liquefied state must be continuously vaporized, but there is a problem that a considerable amount of energy is consumed.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 본 발명은 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 액체상태의 천연가스를 기화시키므로 에너지를 절감할 수 있도록 된 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공하는 데 목적이 있다.Therefore, the present invention has been made to solve the above problems, the present invention is to use the engine exhaust water heated up through the cooling water jacket of the engine to vaporize the natural gas in the liquid state to save energy double It is an object of the present invention to provide a fuel supply system for a high pressure tank of a fuel user organization.

또한 본 발명은 기관배출수를 일차로 열교환한 후 기화기에 공급하므로 과도한 온도구배로 인해 기화기가 깨지는 것을 미연에 방지할 수 있도록 된 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공하는 데 다른 목적이 있다.In another aspect, the present invention is to provide a high-pressure tank fuel supply system of the marine dual-fuel use engine that can prevent the carburetor is broken due to excessive temperature gradient because it is supplied to the carburetor after the first heat exchange of the engine discharge water. have.

아울러 본 발명은 기관배출수를 열교환기에 공급하기 전에 쿨러를 설치하여 일정한 온도로 열교환기에 기관배출수를 공급해주므로 열교환기의 결로를 방지하도록 된 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공하는 데 또 다른 목적이 있다.In addition, the present invention is to provide a high-pressure tank fuel supply system of the marine dual fuel use engine to prevent the condensation of the heat exchanger by installing the cooler before supplying the engine discharge water to the heat exchanger to supply the engine discharge water to the heat exchanger at a constant temperature. There is another purpose.

또한 본 발명은 글리콜워터 쿨러를 구비하여 탱크에서 발생하는 증발가스를 기화기에서 배출되는 글리콜워터와 열교환하여 상기 글리콜워터가 기관냉각수를 냉각할 수 있도록 된 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공하는 데 또 다른 목적이 있다.
In another aspect, the present invention provides a high-pressure tank fuel supply system of a marine dual fuel user engine equipped with a glycol water cooler to exchange the boil-off gas generated in the tank with the glycol water discharged from the vaporizer so that the glycol water can cool the engine coolant There is another purpose to provide.

본 발명은 적어도 20 bar 이상의 압력을 견딜 수 있도록 설계된 고압탱크와; 상기 고압탱크에서 공급된 천연가스를 기화시키는 기화기와; 상기 기화기에서 기화된 천연가스의 미스트를 제거하기 위한 디미스터와; 상기 디미스터에서 미스트가 제거된 천연가스를 기관에 공급하는 가스밸브 유닛과; 상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 기화기의 천연가스를 기화시킬 수 있도록 구비된 열교환수단을 포함하는 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템을 제공한다.The present invention is a high pressure tank designed to withstand pressure of at least 20 bar; A vaporizer for vaporizing the natural gas supplied from the high pressure tank; A demister for removing mist of natural gas vaporized in the vaporizer; A gas valve unit for supplying a natural gas from which mist is removed from the demister to an engine; It provides a high-pressure tank fuel supply system of a marine dual fuel use engine including a heat exchange means provided to vaporize the natural gas of the vaporizer by using the engine exhaust water heated up through the cooling water jacket of the engine.

여기서 상기 열교환수단은 상기 기화기에 출입하는 글리콜워터와, 상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 열교환하는 냉각수 열교환기로 이루어지는 것이 바람직하다.Here, the heat exchange means preferably comprises a cooling water heat exchanger for heat-exchanging the glycol water entering and exiting the vaporizer and the engine exhaust water heated up through the cooling water jacket of the engine.

또한 본 발명은 상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수가 냉각수 열교환기에 공급되기 전에 냉각수를 일차적으로 냉각시켜주는 쿨러를 더 포함하는 것이 바람직하다.In another aspect, the present invention preferably further comprises a cooler that primarily cools the cooling water before the engine exhaust water heated up through the cooling water jacket of the engine is supplied to the cooling water heat exchanger.

또한 본 발명은 고압탱크에서 발생하는 증발가스를 기화기에서 배출되는 글리콜워터와 열교환하여 상기 글리콜워터가 기관냉각수를 냉각할 수 있도록 구비된 글리콜워터 쿨러가 더 포함되는 것이 바람직하다.
In another aspect, the present invention preferably further comprises a glycol water cooler provided to heat the boil-off gas generated in the high pressure tank with the glycol water discharged from the vaporizer to cool the engine coolant.

상기와 같이 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 액체상태의 천연가스를 기화시키므로 에너지를 절감할 수 있다.As described above, the high-pressure tank fuel supply system of the dual fuel use engine for ships according to the present invention vaporizes the liquid natural gas using the engine exhaust water heated up through the engine's cooling water jacket, thereby saving energy.

또한 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 기관배출수를 이용하여 액체상태의 천연가스를 기화시키므로 기관배출수를 냉각시키기 위한 냉각수의 양이 줄어들므로 에너지를 더 절감할 수 있다.In addition, the high-pressure tank fuel supply system of the marine double fuel use engine according to the present invention vaporizes the liquid natural gas by using the engine discharge water, so the amount of cooling water for cooling the engine discharge water is reduced, thereby further saving energy.

아울러 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 기관배출수를 이용하여 액체상태의 천연가스를 기화시키므로 배출가스를 이용하여 열교환을 실시하는 것보다 열교환장치의 수명이 길다.In addition, the high-pressure tank fuel supply system of the marine double fuel use engine according to the present invention vaporizes the liquid natural gas using the engine discharge water, so the life of the heat exchanger is longer than that of heat exchange using the exhaust gas.

또한 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 기관배출수를 일차로 열교환한 후 기화기에 공급하므로 과도한 온도구배로 인해 기화기가 깨지는 것을 미연에 방지할 수 있다.In addition, the high-pressure tank fuel supply system of the marine dual fuel use engine according to the present invention can prevent the carburetor from being broken due to excessive temperature gradient because the engine exhaust water is primarily heat exchanged and then supplied to the carburetor.

아울러 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 기관배출수를 열교환기에 공급하기 전에 쿨러를 설치하여 온도를 일정하게 유지시켜주므로 열교환기의 결로를 방지한다.In addition, the high-pressure tank fuel supply system of the marine dual fuel use engine according to the present invention prevents condensation of the heat exchanger by maintaining a constant temperature by installing a cooler before supplying the engine discharge water to the heat exchanger.

또한 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템은 글리콜워터 쿨러를 구비하여 고압탱크에서 발생하는 증발가스를 기화기에서 배출되는 글리콜워터와 열교환하여 기관냉각수를 냉각할 수 있다.
In addition, the high-pressure tank fuel supply system of the marine double fuel use engine according to the present invention is provided with a glycol water cooler to heat the boil-off gas generated in the high pressure tank with the glycol water discharged from the vaporizer to cool the engine coolant.

도 1은 본 발명에 따른 선박용 이중연료 사용기관의 고압탱크 연료공급 시스템의 개략도이다.1 is a schematic diagram of a high pressure tank fuel supply system of a marine double fuel use engine according to the present invention.

이하, 본 발명의 일실시예에 따른 선박용 이중연료 사용기관의 연료공급 시스템을 첨부도면을 참조하여 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings the fuel supply system of the marine dual fuel use engine according to an embodiment of the present invention.

본 발명의 일실시예에 따른 연료공급 시스템은 액화천연가스가 저장되는 고압탱크(10)와, 상기 고압탱크(10)에서 공급된 천연가스를 기화시키는 기화기(20)와, 상기 기화기(20)에서 기화된 천연가스의 미스트를 제거하기 위한 디미스터(30)와, 상기 디미스터(30)에서 미스트가 제거된 천연가스를 기관(E)에 공급하는 가스밸브 유닛(40)과, 상기 기관(E)의 기관배출수를 이용하여 기화기(20)의 천연가스를 기화시키는 열교환수단을 포함한다.Fuel supply system according to an embodiment of the present invention is a high-pressure tank 10, the liquefied natural gas is stored, a vaporizer 20 for vaporizing the natural gas supplied from the high-pressure tank 10, and the vaporizer 20 Demister 30 for removing the mist of the natural gas vaporized in the gas, The gas valve unit 40 for supplying the natural gas mist removed from the demister 30 to the engine (E), and the engine ( E) heat exchange means for vaporizing the natural gas of the vaporizer 20 using the engine discharge water.

고압탱크(10)는 적어도 20 bar 이상의 압력을 견딜 수 있도록 구비된 고압탱크로서 -163℃ 이하의 온도조건에서 가스를 저장하게 된다. 하지만 상기 고압탱크(10)는 외부의 열에 의해 천연가스의 일부가 기화된다. 이 때 기화되는 천연가스의 양은 계절이나 선박이 지나는 위도에 따라 다르지만 평균적으로 1일 동안 저장 가스량의 0.15% 내외로 배출된다. 상기 기화된 천연가스는 외부로 배출하지 않으면 고압탱크(10) 내부의 압력이 올라가므로 미리 설정된 압력이상 올라가면 안전밸브(12)에 의해 자동으로 배출된다. 상기 고압탱크(10)는 소형선박에 별도의 공간에 장착된다.High pressure tank 10 is a high pressure tank provided to withstand pressure of at least 20 bar or more to store the gas at a temperature of -163 ℃ or less. However, the high pressure tank 10 is part of the natural gas is vaporized by the external heat. The amount of natural gas evaporated depends on the season and the latitude of the ship, but on average, it is emitted at about 0.15% of the amount of stored gas in one day. When the vaporized natural gas is not discharged to the outside, the pressure inside the high pressure tank 10 rises, so when the pressure rises above a predetermined pressure, the gas is automatically discharged by the safety valve 12. The high pressure tank 10 is mounted in a separate space on a small ship.

기화기(20)는 상기 고압탱크(10)로부터 공급된 천연가스를 기화하는 장치로서 액화천연가스를 기화시키기 위해서는 열이 필요하며, 이 필요한 열은 기관(E)의 기관배출수와 열교환을 통해 얻게 된다.The vaporizer 20 is a device for vaporizing the natural gas supplied from the high-pressure tank 10, the heat is required to vaporize the liquefied natural gas, this required heat is obtained through heat exchange with the engine discharge water of the engine (E) .

디미스터(Demister; 30)는 기화기(20)에서 기화된 천연가스의 미스터를 제거하기 위한 장치로서 천연가스 중의 미스트(mist)만을 여과하여 순수한 가스상태의 천연가스를 가스밸브 유닛(40)에 공급하게 된다. Demister (30) is a device for removing the mist of the natural gas vaporized in the vaporizer 20, by filtering only the mist (mist) in the natural gas to supply the natural gas in the pure gas state to the gas valve unit 40 Done.

가스밸브 유닛(40)은 기화기(20)에서 기화되고 디미스터(30)에서 미스트가 제거된 순수한 가스상태의 천연가스를 기관(E)에 분배하여 공급하는 유닛으로, 필요한 양만큼의 천연가스를 각 기관(E)에 공급한다. 따라서 각 기관(E)에 공급된 천연가스는 연소되어 기관(E)을 회전시키고 연소된 배출가스는 배기관(미도시)을 통하여 외부로 배출된다.The gas valve unit 40 is a unit for distributing and supplying the natural gas in the pure gas state which is vaporized in the vaporizer 20 and the mist is removed in the demister 30 to the engine E. Supply to each engine (E). Therefore, the natural gas supplied to each engine (E) is burned to rotate the engine (E) and the burned exhaust gas is discharged to the outside through an exhaust pipe (not shown).

열교환수단은 기관(E)의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 기화기(20)의 액화천연가스를 기화시키는 수단으로서 상기 기화기(20)에 출입하는 글리콜워터(Glycol water)와, 상기 기관(E)의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 열교환하는 냉각수 열교환기(50)로 이루어진다.The heat exchange means is a means for vaporizing the liquefied natural gas of the vaporizer 20 by using the engine exhaust water heated up through the cooling water jacket of the engine E, glycol water (Glycol water) entering and exiting the vaporizer 20, and It consists of a cooling water heat exchanger (50) which heat-exchanges the engine discharge water heated up through the cooling water jacket of the engine (E).

상기 냉각수 열교환기(50)는 다관원통식(Shell & tube type)으로 기화기(20)로 향하는 글리콜워터는 내부의 관을 따라 순환하게 되고, 기관(E)의 냉각수 쟈켓을 통과하여 승온된 기관배출수는 내부의 공간에 공급된다. 따라서 기관배출수의 열이 글리콜워터에 전달되어 기관배출수의 온도는 냉각수 열교환기(50)를 통과한 후 낮아지고 글리콜워터는 냉각수 열교환기(50)를 통과한 후 높아진다.The cooling water heat exchanger (50) is a shell and tube type glycol water directed to the vaporizer 20 is circulated along the inner tube, the engine exhaust water heated up through the cooling water jacket of the engine (E) Is supplied to the interior space. Therefore, the heat of the engine discharge water is transferred to the glycol water so that the temperature of the engine discharge water is lowered after passing through the cooling water heat exchanger 50 and the glycol water is increased after passing the cooling water heat exchanger 50.

상기 쿨러(60)는 냉각수 열교환기(50)로 유입되는 기관배출수의 온도를 일정한 온도로 유지하므로 상기 냉각수 열교환기(50)에서 큰 온도차로 인해 결로가 발생하는 것을 방지하게 된다.The cooler 60 maintains the temperature of the engine discharge water flowing into the coolant heat exchanger 50 at a constant temperature, thereby preventing condensation from occurring due to a large temperature difference in the coolant heat exchanger 50.

상기 고압탱크(10)에서 발생하는 증발가스를 기화기(20)에서 배출되는 글리콜워터와 열교환하여 상기 글리콜워터가 기관냉각수를 냉각할 수 있도록 글리콜워터 쿨러(70)가 설치된다.
A glycol water cooler 70 is installed to heat the boil-off gas generated in the high pressure tank 10 with glycol water discharged from the vaporizer 20 so that the glycol water cools the engine coolant.

10 : 고압탱크 12 : 안전밸브
20 : 기화기 30 : 디미스터
40 : 가스밸브 유닛 50 : 냉각수 열교환기
60 : 쿨러 70 : 글리콜워터 쿨러
E : 기관10: high pressure tank 12: safety valve
20: Carburetor 30: Demister
40 gas valve unit 50 cooling water heat exchanger
60: cooler 70: glycol water cooler
E: Institution

Claims (4)

적어도 20 bar 이상의 압력을 견딜 수 있도록 설계된 고압탱크와;
상기 고압탱크에서 공급된 천연가스를 기화시키는 기화기와;
상기 기화기에서 기화된 천연가스의 미스트를 제거하기 위한 디미스터와;
상기 디미스터에서 미스트가 제거된 천연가스를 기관에 공급하는 가스밸브 유닛과;
상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 이용하여 기화기의 천연가스를 기화시킬 수 있도록 구비된 열교환수단을 포함하는 것을 특징으로 하는 선박용 이중연료 사용기관의 연료공급 시스템.
A high pressure tank designed to withstand at least 20 bar pressure;
A vaporizer for vaporizing the natural gas supplied from the high pressure tank;
A demister for removing mist of natural gas vaporized in the vaporizer;
A gas valve unit for supplying a natural gas from which mist is removed from the demister to an engine;
And a heat exchange means provided to vaporize natural gas of the vaporizer using the engine discharged water that has passed through the engine's cooling water jacket.
청구항 1에 있어서,
상기 열교환수단은 상기 기화기에 출입하는 글리콜워터와, 상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수를 열교환하는 냉각수 열교환기를 포함하는 것을 특징으로 하는 선박용 이중연료 사용기관의 연료공급 시스템.
The method according to claim 1,
The heat exchange means is a fuel supply system of a dual fuel use engine for ships comprising a glycol water entering and exiting the carburetor, and a cooling water heat exchanger for heat-exchanging the engine exhaust water heated up through the cooling water jacket of the engine.
청구항 2에 있어서,
상기 기관의 냉각수 쟈켓을 통과하여 승온된 기관배출수가 냉각수 열교환기에 공급되기 전에 냉각수를 일차적으로 냉각시켜주는 쿨러를 더 포함하는 것을 특징으로 하는 선박용 이중연료 사용기관의 연료공급 시스템.
The method according to claim 2,
And a cooler configured to first cool the cooling water before the engine exhaust water heated up through the cooling water jacket of the engine is supplied to the cooling water heat exchanger.
청구항 2에 있어서,
상기 고압탱크에서 발생하는 증발가스를 기화기에서 배출되는 글리콜워터와 열교환하여 상기 글리콜워터가 기관냉각수를 냉각할 수 있도록 구비된 글리콜워터 쿨러가 더 포함되는 것을 특징으로 하는 선박용 이중연료 사용기관의 연료공급 시스템.





The method according to claim 2,
Fuel supply of a dual fuel use engine for ships, further comprising a glycol water cooler provided to heat the boil-off gas generated in the high pressure tank with glycol water discharged from the vaporizer to cool the engine coolant. system.





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