KR20120052661A - Semi automatic fuel oil change over system - Google Patents

Semi automatic fuel oil change over system Download PDF

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Publication number
KR20120052661A
KR20120052661A KR1020100113921A KR20100113921A KR20120052661A KR 20120052661 A KR20120052661 A KR 20120052661A KR 1020100113921 A KR1020100113921 A KR 1020100113921A KR 20100113921 A KR20100113921 A KR 20100113921A KR 20120052661 A KR20120052661 A KR 20120052661A
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South Korea
Prior art keywords
fuel
fuel oil
oil
valve
engine
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KR1020100113921A
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Korean (ko)
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KR101185450B1 (en
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우영철
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삼성중공업 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
    • F02D19/0613—Switch-over from one fuel to another
    • 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
    • F02D19/0639—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 characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • 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
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0673—Valves; Pressure or flow regulators; Mixers
    • F02D19/0676—Multi-way valves; Switch-over 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
    • 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)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: A system for semi-automatically converting fuel oil is provided to optimize the usage efficiency and power of an engine by optimizing temperatures and viscosities of the fuel oil supplied to the engine. CONSTITUTION: A system for semi-automatically converting fuel oil comprises a fuel conversion valve(VA11), a fuel supply unit(115), a fuel oil cooling unit(119) , and a control box(120). The fuel conversion valve selectively converts a heavy oil tank and fuel oil of a diesel tank(113) supplied to an engine. The fuel supply installed between the fuel conversion valve and the engine removes foreign materials included in the fuel oil. The fuel oil cooling unit installed at the back of the engine is supplied with low-viscosity fuel oil and discharges after cooling. The control box gradually converts the fuel converting valve for a set time and automatically controls a temperature departure.

Description

반자동 연료유 절환 시스템{SEMI AUTOMATIC FUEL OIL CHANGE OVER SYSTEM}Semi-automatic fuel oil switching system {SEMI AUTOMATIC FUEL OIL CHANGE OVER SYSTEM}

본 발명은 반자동 연료유 절환 시스템에 관한 것이다.
The present invention relates to a semi-automatic fuel oil switching system.

도 1은 종래기술의 연료유 절환 시스템을 도시한 개략도로서, 상기 도 1을 참조하여 선박용 엔진에 연료를 공급하는 시스템에 대해 설명한다.1 is a schematic view showing a fuel oil switching system of the prior art, with reference to FIG. 1 will be described a system for supplying fuel to a marine engine.

선박용 엔진으로의 연료유 공급은 연료 절환밸브(VA1)를 통하여 중유 또는 경유를 선택적으로 공급하거나 중유 또는 경유를 혼합하여 공급되도록 하고 있다.The fuel oil supply to the marine engine is to selectively supply heavy oil or light oil or to mix heavy oil or light oil through the fuel switching valve VA1.

먼저, 중유공급과정을 설명하면 다음과 같다.First, the process of supplying heavy oil is as follows.

중유탱크(HFO TANK)(11)와 경유탱크(MDO TANK)(13) 사이에 연료절환밸브(VA1)가 마련되어 있고, 상기 연료절환밸브(VA1)를 중유(HFO) 쪽으로 절환시켜 중유를 엔진측으로 공급하게 된다.A fuel switching valve VA1 is provided between the HFO tank 11 and the MDO TANK 13, and the fuel switching valve VA1 is switched to the heavy oil (HFO) side so that the heavy oil is turned to the engine side. Will be supplied.

이때, 공급되는 중유는 연료공급유닛(15)을 거쳐 엔진(17)에 공급되도록 한다.In this case, the supplied heavy oil is supplied to the engine 17 via the fuel supply unit 15.

여기서, 상기 연료공급유닛(15)은 엔진(17)으로 연료를 공급하는 시스템을 구성하는 장비들(펌프, 히터, 필터, 점도계 등)을 한군데 모아 유닛 형태로 구성한 장치이다.Here, the fuel supply unit 15 is a device configured in a unit form by gathering equipment (pump, heater, filter, viscometer, etc.) constituting the system for supplying fuel to the engine 17.

이와 같은 연료공급유닛(15)에서는 연료에 포함된 불순물과 수분을 제거하여 적정한 점도와 온도를 갖도록 하여 엔진(17)에 공급되도록 함으로써, 연료절감은 물론, 장비의 수명을 연장시켜 엔진의 효율을 극대화시키는 역할을 하게 된다.In such a fuel supply unit 15 by removing impurities and water contained in the fuel to have an appropriate viscosity and temperature to be supplied to the engine 17, fuel efficiency, as well as extending the life of the equipment to improve the efficiency of the engine Maximize the role.

그리고, 상기 엔진(17)에서 사용되고 남은 중유(HFO)는 회수관을 따라 이동되어 중유 공급관에 합류하여 연료공급유닛(15)으로 재공급하게 된다.In addition, the remaining heavy oil (HFO) used in the engine 17 is moved along the recovery pipe to join the heavy oil supply pipe to supply the fuel to the fuel supply unit 15 again.

이때, 상기 엔진(17)의 후단에 연료유 냉각장치(19)가 마련되는데, 회수되는 중유(HFO)의 유입이 차단되도록 연료유 냉각장치(19)의 입구 및 출구에 설치된 제2밸브(VA2)와 제3밸브(VA3)를 차단한 상태에서 제2밸브(VA2)와 제3밸브(VA3) 사이에 설치된 제4밸브(VA4) 만을 개방시켜 중유(HFO)가 중유 공급관 측으로 회수되도록 한다.In this case, the fuel oil cooling device 19 is provided at the rear end of the engine 17. The second valve VA2 is installed at the inlet and the outlet of the fuel oil cooling device 19 to block the inflow of the recovered heavy oil (HFO). ) And the third valve (VA3) is opened to open only the fourth valve (VA4) provided between the second valve (VA2) and the third valve (VA3) to recover the heavy oil (HFO) to the heavy oil supply pipe side.

이때, 상기 중유공급라인 및 회수라인에는 별도의 스팀라인 설치되어 있고, 상기 스팀라인에 스팀이 공급되어 중유(HFO)가 가열될 수 있도록 제5밸브(VA5)가 개방되도록 한다.
In this case, a separate steam line is installed in the heavy oil supply line and the recovery line, and the fifth valve VA5 is opened so that steam is supplied to the steam line to heat the heavy oil (HFO).

다음, 경유공급과정을 설명하면 다음과 같다.Next, the diesel supply process is as follows.

중유탱크(HFO TANK)(11)와 경유탱크(MDO TANK)(13) 사이에 마련된 연료절환밸브(VA1)를 경유(MDO) 쪽으로 절환시켜 경유가 엔진측에 공급되도록 한다.The fuel switching valve VA1 provided between the heavy oil tank (HFO TANK) 11 and the diesel oil tank (MDO TANK) 13 is switched to the diesel oil (MDO) so that the diesel oil is supplied to the engine side.

이때, 공급되는 경유(MDO)는 연료공급유닛(15)을 거쳐 엔진(17)에 공급되도록 한다.At this time, the supplied diesel oil (MDO) is to be supplied to the engine 17 via the fuel supply unit 15.

이와 같은 연료공급유닛(15)에서는 연료에 포함된 불순물과 수분을 제거하여 적정한 점도와 온도를 갖도록 한 후, 엔진(17)에 공급시켜 연소에 사용하게 된다.In the fuel supply unit 15 as described above, impurities and moisture contained in the fuel are removed to have an appropriate viscosity and temperature, and then supplied to the engine 17 to be used for combustion.

상기 엔진(17)에서 사용되고 남은 경유(MDO)는 회수관을 따라 이동되어 연료유 냉각장치(19)로 유입되어 냉각과정을 거치게 된다.The remaining light oil (MDO) used in the engine 17 is moved along the recovery pipe and flows into the fuel oil cooling device 19 to undergo a cooling process.

상기 연료유 냉각장치(19)에서 냉각과정을 거친 경유(MDO)는 경유공급관에 합류하여 연료공급유닛(15)으로 재공급된다.The diesel fuel (MDO) that has undergone the cooling process in the fuel oil cooling device 19 is joined to the diesel fuel supply pipe and resupplied to the fuel supply unit 15.

이때, 상기 엔진(17)의 전단에 마련된 연료유 냉각장치(19)로 경유가 공급될 수 있도록 연료유 냉각장치(19)의 입구 및 출구에 설치된 제2밸브(VA2)와 제3밸브(VA3)를 개방하고, 제2밸브(VA2)와 제3밸브(VA3) 사이에 설치된 제4밸브(VA4)를 차단시켜 경유가 직접 경유 공급관 측으로 회수되는 것을 방지하게 된다.At this time, the second valve (VA2) and the third valve (VA3) installed at the inlet and outlet of the fuel oil cooling device 19 so that light oil can be supplied to the fuel oil cooling device 19 provided at the front end of the engine (17). ), And the fourth valve VA4 provided between the second valve VA2 and the third valve VA3 is blocked to prevent the diesel oil from being directly recovered to the diesel oil supply pipe side.

이때, 상기 제5밸브(VA5)는 닫혀진 상태이며 스팀라인에 의한 스팀 공급이 차단되도록 한다.
At this time, the fifth valve VA5 is closed and the steam supply by the steam line is blocked.

상기한 바와 같은 종래기술의 연료절환시스템은 연료 절환(경유→중유 또는 중유→경유) 후, 연료유 사이의 온도 변화 편차(1.8~2.0℃/Minute 이하) 및 점도(VISCOSITY)를 제어해야 한다.The fuel switching system of the prior art as described above should control the temperature change deviation (1.8-2.0 ° C./Minute or less) and viscosity (VISCOSITY) between fuel oils after fuel switching (light oil → heavy oil or heavy oil → light oil).

즉, 경유에 비해 점도가 높은 중유는 연료공급라인에 설치한 스팀라인을 이용해 가열시켜 점도를 낮추는 것이 필요하고, 경유는 이와 반대로 냉각장치를 통해 냉각시켜 점도를 높이는 노력을 필요로 하게 된다.That is, heavy oil having a higher viscosity than light oil needs to be heated by using a steam line installed in a fuel supply line to lower the viscosity. On the contrary, light oil needs an effort to increase viscosity by cooling through a cooling device.

특히, 연료유 절환 초기의 급격한 온도편차 및 점도차이는 엔진에 치명적인 결함을 일으키게 되기 때문에, 연료유 절환 비율을 서서히 절환시켜야 하고, 이 과정에서 스팀라인 및 연료유 냉각장치(19)를 이용한 온도제어가 이루어져야 한다.In particular, since the rapid temperature deviation and viscosity difference at the beginning of fuel oil switching cause a fatal defect in the engine, it is necessary to gradually switch the fuel oil switching ratio, and in this process, temperature control using the steam line and the fuel oil cooling device 19. Should be done.

그러나, 종래에는 이러한, 온도편차 제어 및 점도 제어를 운전자가 조작 매뉴얼을 통해 직접 수동 제어함으로써, 연료절환 시스템의 제어가 어렵고, 효율적이지 못해 엔진에 무리를 주게 된다.
However, in the related art, by controlling the temperature deviation control and the viscosity control directly by the driver through the operation manual, the control of the fuel switching system is difficult and inefficient, which causes a burden on the engine.

본 발명의 실시예들은 작업자의 수동조작에 의해 연료유 절환이 선택되고, 이후, 연료 절환시 발생하는 연료유 사이의 온도 변화 편차 및 점도 차이를 제어하는 일련의 과정을 콘트롤박스를 통해 반자동 제어할 수 있도록 함으로써, 연료절환 시스템의 제어가 쉽고, 엔진에 공급되는 연료유의 온도 및 점도를 최적화시켜 엔진의 출력 증가 및 사용 효율성을 극대화 하고자 한다.
Embodiments of the present invention, the fuel oil switching is selected by the operator's manual operation, and then, a semi-automatic control of a series of processes for controlling the temperature variation deviation and viscosity difference between the fuel oil generated during the fuel switching can be controlled By making it possible, the control of the fuel switching system is easy and the temperature and viscosity of the fuel oil supplied to the engine are optimized to maximize the output of the engine and maximize the use efficiency.

본 발명의 일측면에 따르면, 중유탱크 및 경유탱크의 연료유를 선택적으로 절환시켜 엔진에 공급되도록 하는 연료절환밸브; 상기 연료절환밸브와 엔진 사이에 설치되어 연료유에 포함된 불순물이 제거되도록 하는 연료공급유닛; 상기 엔진의 후단에 설치되어 낮은 점도의 연료유를 공급받아 냉각후 토출되도록 하는 연료유 냉각장치; 및 상기 연료절환밸브를 기설정된 시간 동안 서서히 절환시켜 온도편차가 자동 제어되도록 하는 콘트롤박스;를 포함하는 반자동 연료유 절환시스템이 제공될 수 있다.According to an aspect of the invention, the fuel switching valve for selectively supplying the fuel oil of the heavy oil tank and diesel fuel tank to be supplied to the engine; A fuel supply unit installed between the fuel switching valve and the engine to remove impurities contained in the fuel oil; A fuel oil cooling device installed at a rear end of the engine to receive fuel oil having a low viscosity and to be discharged after cooling; And a control box for gradually switching the fuel switching valve for a predetermined time so that the temperature deviation is automatically controlled. The semi-automatic fuel oil switching system may be provided.

또한, 상기 연료절환밸브는 콘트롤박스의 제어신호를 입력받아 연료절환밸브의 절환속도가 제어되도록 하는 스피드콘트롤러가 더 설치될 수 있다.In addition, the fuel switching valve may be further provided with a speed controller for receiving a control signal of the control box to control the switching speed of the fuel switching valve.

또한, 상기 연료공급유닛은 펌프, 히터, 필터 및 점도계가 포함될 수 있다.In addition, the fuel supply unit may include a pump, a heater, a filter and a viscometer.

또한, 상기 연료공급유닛 내에 설치한 점도계로부터 측정된 연료유의 점도값을 제공받는 콘트롤박스는 점도값이 설정값 이하일 경우, 연료유 냉각장치의 공급측에 설치된 제2밸브를 개방시켜 연료유가 유입되도록 하고, 유입된 연료유가 냉각과정을 거쳐 토출되도록 하여 연료유의 점도가 자동 제어되도록 할 수 있다.In addition, the control box provided with the viscosity value of the fuel oil measured from the viscometer installed in the fuel supply unit, if the viscosity value is less than the set value, by opening the second valve installed on the supply side of the fuel oil cooling device to allow the fuel oil to flow in In addition, the introduced fuel oil may be discharged through a cooling process so that the viscosity of the fuel oil may be automatically controlled.

또한, 상기 연료공급유닛 내에 설치한 점도계로부터 측정된 연료유의 점도값을 제공받는 콘트롤박스는 점도값이 설정값 이상일 경우, 히터를 가동시켜 연료유가 가열되도록 하여 연료유의 점도가 자동 제어되도록 할 수 있다.In addition, the control box provided with the viscosity value of the fuel oil measured from the viscometer installed in the fuel supply unit, if the viscosity value is more than the set value, by operating the heater to allow the fuel oil is heated so that the viscosity of the fuel oil can be automatically controlled. .

또한, 상기 연료유 냉각장치의 토출 측에 설치되는 제3밸브를 역류방지밸브로 구성할 수 있다.In addition, the third valve installed on the discharge side of the fuel oil cooling device can be configured as a non-return valve.

또한, 상기 엔진측으로 공급되는 연료유의 공급라인 및 회수라인에 연료유의 점도 관리를 위한 스팀라인이 설치되도록 하되, 연료절환밸브가 경유에서 중유로 절환되는 경우 스팀이 공급되고, 중유에서 경유로 절환되는 경우 스팀공급이 차단되도록 상기 스팀라인의 공급측에 설치된 제5밸브를 콘트롤박스 신호에 의해 자동 제어되도록 할 수 있다.
In addition, the steam line for the viscosity control of the fuel oil is to be installed in the supply line and the recovery line of the fuel oil supplied to the engine side, when the fuel switching valve is switched from light oil to heavy oil, steam is supplied, is switched from heavy oil to light oil In this case, the fifth valve installed at the supply side of the steam line may be automatically controlled by the control box signal so that the steam supply is blocked.

본 발명의 실시예들은 작업자의 수동조작에 의해 연료유 절환이 선택되고, 이후, 연료 절환시 발생하는 연료유 사이의 온도 변화 편차 및 점도 차이를 제어하는 일련의 과정을 콘트롤박스를 통해 반자동 제어할 수 있도록 함으로써, 연료절환 시스템의 제어가 쉽고, 엔진에 공급되는 연료유의 온도 및 점도를 최적화시켜 엔진의 출력 증가 및 사용 효율성을 극대화 할 수 있다.
Embodiments of the present invention, the fuel oil switching is selected by the operator's manual operation, and then, a semi-automatic control of a series of processes for controlling the temperature variation deviation and viscosity difference between the fuel oil generated during the fuel switching can be controlled In this way, the control of the fuel switching system is easy and the temperature and viscosity of the fuel oil supplied to the engine can be optimized to maximize the power output and the efficiency of use of the engine.

도 1은 종래기술의 연료유 절환 시스템을 도시한 개략도.
도 2는 본 발명의 일실시예에 따른 반자동 연료유 절환 시스템을 도시한 개략도.1 is a schematic diagram showing a fuel oil switching system of the prior art;
Figure 2 is a schematic diagram showing a semi-automatic fuel oil switching system according to an embodiment of the present invention.

이하, 본 발명의 바람직한 실시예에 대해 첨부된 도면을 참조하여 자세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일실시예에 따른 반자동 연료유 절환 시스템을 도시한 개략도이다.Figure 2 is a schematic diagram showing a semi-automatic fuel oil switching system according to an embodiment of the present invention.

상기 도 2를 참조하면, 본 발명의 일실시예에 따른 반자동 연료유 절환 시스템은, 크게 중유탱크(111), 경유탱크(113), 연료절환밸브(VA11), 연료공급유닛(115), 엔진(117), 연료유 냉각장치(119), 콘트롤박스(120)를 포함하는 구성으로 이루어진다.2, the semi-automatic fuel oil switching system according to an embodiment of the present invention, heavy oil tank 111, diesel oil tank 113, fuel switching valve (VA11), fuel supply unit 115, engine 117, the fuel oil cooling device 119, and the control box 120.

상기 중유탱크(111) 및 경유탱크(113)가 인접하여 설치된다. 이때 상기 중유탱크(111) 및 경유탱크(113) 각각의 공급관이 하나의 공급관으로 연결되는데, 공급관의 연결부에는 중유 및 경유를 절환 공급할 수 있도록 하는 연료 절환밸브(VA11)가 설치된다.The heavy oil tank 111 and the light oil tank 113 are installed adjacent to each other. At this time, the supply pipes of each of the heavy oil tank 111 and the light oil tank 113 are connected to one supply pipe, and a fuel switching valve VA11 is installed at the connection portion of the supply pipe to switch and supply heavy oil and light oil.

상기 연료 절환밸브(VA11)는 모터를 이용한 전동식, 솔레노이드를 이용한 자력식, 유체 압력을 이용한 유압식 등 다양한 방식이 구현될 수 있다. 예를 들면, 상기 연료 절환밸브(VA11)는 상대적으로 제어가 용이한 압축공기에 의해 구동되는 삼방향 밸브일 수 있다.The fuel switching valve VA11 may be implemented in various ways such as an electric motor using a motor, a magnetic motor using a solenoid, and a hydraulic motor using a fluid pressure. For example, the fuel switching valve VA11 may be a three-way valve driven by compressed air, which is relatively easy to control.

상기 연료 절환밸브(VA11)는 중유(HFO) 또는 경유(MDO)쪽으로 공급유로를 절환시켜 중유 또는 경유를 연료공급유닛(115)에 공급하게 된다.The fuel switching valve VA11 switches the supply flow path toward heavy oil (HFO) or light oil (MDO) to supply heavy oil or light oil to the fuel supply unit 115.

상기 연료공급유닛(115)은 엔진(117)으로 연료를 공급하는 시스템을 구성하는 장비들(펌프, 히터, 필터, 점도계 등)을 한군데 모아 유닛 형태로 구성한 장치로서, 이와 같은 연료공급유닛(115)에서는 연료에 포함된 불순물과 수분을 제거하여 적정한 점도와 온도를 갖도록 하여 엔진(117)에 공급되도록 함으로써, 연료절감은 물론, 장비의 수명을 연장시켜 엔진의 효율을 극대화시키는 역할을 하게 된다.The fuel supply unit 115 is a device configured in a unit form by gathering equipment (pump, heater, filter, viscometer, etc.) constituting a system for supplying fuel to the engine 117, such a fuel supply unit 115 In order to remove impurities and water contained in the fuel to have an appropriate viscosity and temperature to be supplied to the engine 117, fuel consumption, as well as extending the life of the equipment to maximize the efficiency of the engine.

상기 연료공급유닛(115)로부터 공급받은 연료유(중유 및 경유)를 엔진(117)에서 연소하게 되며, 연소과정에서 남는 연료는 회수라인을 통해 연료공급유닛(115)으로 재 공급된다.The fuel oil (heavy oil and diesel) supplied from the fuel supply unit 115 is burned in the engine 117, and the fuel remaining in the combustion process is supplied to the fuel supply unit 115 again through a recovery line.

이때, 상기 연료 회수라인 상에 연료유 냉각장치(119)가 설치되어 회수되는 연료의 온도 및 점도를 제어할 수 있게 된다.At this time, the fuel oil cooling device 119 is installed on the fuel recovery line to control the temperature and viscosity of the recovered fuel.

상기 연료유 냉각장치(119)는 연료유의 공급을 위한 제2밸브(VA12)와, 연료유의 토출을 위한 제3밸브(VA13)가 설치되는데, 상기 연료유 냉각장치(119)로의 연료유의 공급/토출을 제2밸브(VA12)의 개폐를 제어함으로써 통제할 수 있다. 이 경우, 제3밸브(VA13)는 역류방지밸브가 사용될 수 있다.The fuel oil cooling device 119 is provided with a second valve VA12 for supplying fuel oil and a third valve VA13 for discharging fuel oil, and supplying fuel oil to the fuel oil cooling device 119. Discharge can be controlled by controlling the opening and closing of the second valve VA12. In this case, the third valve VA13 may be a non-return valve.

이때, 상기 제2밸브(VA12)의 전단에서 제3밸브(VA13)의 후단으로 직접 연결되는 공급관을 형성함으로써, 연료유 냉각장치(119)를 거치지 않고 연료유가 회수되도록 할 수 있다. 이때, 제2밸브(VA12)의 전단에서 제3밸브(VA13)의 후단으로 직접 연결되는 공급관에 제4밸브(VA14)를 형성하고, 제2밸브(VA12)의 개폐작동과 반대로 작동되도록 할 수 있다. 즉, 제4밸브(VA14)는 제2개폐밸브(VA12)의 개방시에는 밸브가 폐쇄됨으로써, 연료유의 유로를 차단하여 연료유 냉각장치(119)를 거쳐 연료유가 회수되도록 하고, 제2개폐밸브(VA12)의 폐쇄시에는 밸브가 개방되어 연료유의 유로를 개방시켜 연료유 냉각장치(119)를 거치지 않고 연료유가 회수되도록 한다.
At this time, by forming a supply pipe directly connected to the rear end of the third valve (VA13) in front of the second valve (VA12), it is possible to recover the fuel oil without passing through the fuel oil cooling device (119). At this time, the fourth valve (VA14) is formed in the supply pipe directly connected to the rear end of the third valve (VA13) at the front of the second valve (VA12), and can be operated in reverse operation of the opening and closing operation of the second valve (VA12). have. That is, the fourth valve VA14 closes the valve when the second opening / closing valve VA12 opens, thereby blocking the flow of fuel oil so that the fuel oil is recovered through the fuel oil cooling device 119, and the second opening / closing valve VA14. When the VA12 is closed, the valve is opened to open the flow path of the fuel oil so that the fuel oil is recovered without passing through the fuel oil cooling device 119.

이때, 제2밸브(VA12) 및 제4밸브(VA14)는 공압제어 밸브(pneumatic control valve)일수 있다.In this case, the second valve VA12 and the fourth valve VA14 may be pneumatic control valves.

상기 제2밸브(VA12) 및 제4밸브(VA14)의 개폐를 제어하기 위한 냉각콘트롤러(121)가 콘트롤박스(120)에 구비된다.
The control box 120 is provided with a cooling controller 121 for controlling the opening and closing of the second valve VA12 and the fourth valve VA14.

상기 콘트롤박스(120) 내에 설치된 냉각콘트롤러(121)는 엔진(117)에서 요구하는 적합한 점도를 맞추기 위하여 연료공급유닛(115) 내에 설치한 점도계(VISCORATOR)(미도시)로부터 연료유의 점도값을 제공받고, 점도값이 설정값 이하이면 제2밸브(VA12)를 개방하고 제4밸브(VA14)를 폐쇄시켜 연료유가 연료유 냉각장치(119) 내로 유입되도록 하고, 점도값이 설정값 이상인 경우에는 제2밸브(VA12)를 폐쇄하고 제4밸브(VA14)를 개방시켜 연료유가 연료유 냉각장치(119)로 유입되는 것을 차단하게 된다.The cooling controller 121 installed in the control box 120 provides the viscosity value of the fuel oil from a viscometer (VISCORATOR) (not shown) installed in the fuel supply unit 115 in order to achieve a suitable viscosity required by the engine 117. When the viscosity value is less than or equal to the set value, the second valve VA12 is opened and the fourth valve VA14 is closed to allow the fuel oil to flow into the fuel oil cooler 119. The second valve VA12 is closed and the fourth valve VA14 is opened to block the fuel oil from flowing into the fuel oil cooler 119.

또한, 상기 콘트롤박스(120)에는 스위치 신호부(123)가 설치될 수 있는데,In addition, the control box 120 may be provided with a switch signal unit 123,

상기의 스위치 신호부(123)를 통해서 연료절환밸브(VA11)의 조작이 원격제어되도록 할 수도 있다.The operation of the fuel switching valve VA11 may be remotely controlled through the switch signal unit 123.

이때, 연료절환밸브(VA11)의 조작을 원격 제어함으로써, 작업자가 직접 매뉴얼에 따라 연료절환밸브(VA11)를 수동 조작하는데 따른 불편을 해소할 수 있게 된다.At this time, by remotely controlling the operation of the fuel switching valve (VA11), it is possible to solve the inconvenience of the operator manually operating the fuel switching valve (VA11) according to the manual.

예컨대, 상기 연료절환밸브(VA11)를 공압장치와 연계시켜 작동되도록 할 수 있는데, 상기 공압장치와 연료절환밸브(VA11)와 공압장치 사이에 스위치 신호부(123)의 제어신호를 받아 작동되는 솔레노이드밸브(124)를 설치할 수 있다.For example, the fuel switching valve VA11 may be operated in conjunction with a pneumatic device, and the solenoid operated by receiving a control signal of the switch signal unit 123 between the pneumatic device, the fuel switching valve VA11, and the pneumatic device. The valve 124 can be installed.

상기 솔레노이드밸브(124)는 전기신호에 의해 작동유체 즉, 압축공기의 공급 및 차단을 제어하게 된다.The solenoid valve 124 is to control the supply and shut off of the working fluid, that is, compressed air by the electric signal.

이때, 상기 솔레노이드밸브(124)와 연료절환밸브(VA11) 사이에 스피드 콘트롤러(125)를 설치하고, 연료절환밸브(VA11)의 개도 시간을 조절할 수 있다.At this time, the speed controller 125 may be installed between the solenoid valve 124 and the fuel switching valve VA11, and the opening time of the fuel switching valve VA11 may be adjusted.

즉, 상기 스피드 콘트롤러(125)는 연료절환밸브(VA11) 측으로 공급되는 압축공기의 유압을 조절함으로써, 연료절환밸브(VA11)의 개도 시간을 조절할 수 있게 된다.That is, the speed controller 125 may adjust the opening time of the fuel switching valve VA11 by adjusting the hydraulic pressure of the compressed air supplied to the fuel switching valve VA11.

이때, 상기 스피드 콘트롤러(125)의 압력조절은 수동 조작하여 미리 세팅되도록 할 수 있다.At this time, the pressure control of the speed controller 125 may be set in advance by manual operation.

이처럼, 연료절환밸브(VA11)의 개도시간을 조절함으로써, 서로 다른 종류의 연료 절환시에 발생될 수 있는 급격한 온도편차 및 점도차이를 서서히 조절할 수 있게 된다.In this way, by adjusting the opening time of the fuel switching valve VA11, it is possible to gradually adjust the sudden temperature deviation and the viscosity difference that can be generated during different types of fuel switching.

또한, 상기 스위치 신호부(123)는 연료유 공급라인에 설치된 히트 트레이싱(HEAT TRACING)을 통해 연료유의 점도를 관리할 수 있게 된다.In addition, the switch signal unit 123 may manage the viscosity of the fuel oil through heat tracing (HEAT TRACING) installed in the fuel oil supply line.

여기서, 히트 트레이싱이라 함은, 파이프 또는 탱크 내의 유체의 고유 특성인 점성 또는 빙점 등을 유지하기 위해 외부로 방출되는 열을 최대한 억제하여 열손실이 최소화 되도록 하는 시스템으로서, 본 발명에서는 스팀공급라인을 연료유 공급라인의 외면에 설치하여 연료유를 가열함으로써, 연료유의 점도를 제어할 수 있게 된다.Here, the heat tracing is a system for minimizing heat loss by minimizing heat emitted to the outside in order to maintain viscosity or freezing point, which is a characteristic of the fluid in the pipe or tank, and in the present invention, the steam supply line By installing on the outer surface of the fuel oil supply line and heating the fuel oil, it is possible to control the viscosity of the fuel oil.

상기 스위치 신호부(123)는 중유에서 경유로 연료유를 절환할 때, 스팀공급라인의 제5밸브(VA15)를 즉시 폐쇄시켜 스팀공급이 차단되도록 한다.The switch signal unit 123 immediately closes the fifth valve VA15 of the steam supply line when switching fuel oil from heavy oil to diesel, so that the steam supply is blocked.

이와 반대로 경유에서 중유로 연료유를 절환할 때는 스팀공급라인의 제5밸브(VA15)를 즉시 개방시켜 스팀이 공급되도록 한다.On the contrary, when the fuel oil is switched from light oil to heavy oil, the fifth valve VA15 of the steam supply line is immediately opened to supply steam.

이때, 상기 제5밸브(VA15)는 솔레노이드 밸브일 수 있다.
In this case, the fifth valve VA15 may be a solenoid valve.

이하, 본 발명의 일실시예에 따른 반자동 연료유 절환 시스템의 작동에 대 설명한다.Hereinafter, the operation of the semi-automatic fuel oil switching system according to an embodiment of the present invention.

먼저, 경유에서 중유로 연료유를 절환공급하는 과정으로서, 중유탱크(HFO TANK)(111)와 경유탱크(MDO TANK)(113) 사이에 연료절환밸브(VA11)가 마련되어 있고, 상기 연료절환밸브(VA11)를 중유(HFO) 쪽으로 절환시켜 중유를 엔진측으로 공급하게 된다.First, a fuel switching valve (VA11) is provided between the heavy oil tank (HFO TANK) 111 and the light oil tank (MDO TANK) 113 as a process for switching and supplying fuel oil from light oil to heavy oil, and the fuel switching valve (VA11) is switched to the heavy oil (HFO) to supply the heavy oil to the engine side.

이때, 상기 연료절환밸브(VA11)는 스피드콘트롤러(125)에 의해 미리 설정된 절환 시간에 맞춰 단계적인 연료절환이 이루어지게 된다. 연료절환 시간은 60분 이내 마무리되도록 설정할 수 있다.At this time, the fuel switching valve (VA11) is a step-by-step fuel switching is made in accordance with the preset switching time by the speed controller 125. The fuel switching time can be set to finish within 60 minutes.

상기 연료절환밸브(VA11)에서 절환된 연료유는 연료공급유닛(115)을 거쳐 엔진(117)에 공급되고, 엔진(117)에서 사용되고 남은 연료유는 회수라인을 통해 연료공급유닛(115)로 복귀되어 재공급되도록 한다.The fuel oil switched by the fuel switching valve VA11 is supplied to the engine 117 via the fuel supply unit 115, and the remaining fuel oil used in the engine 117 is transferred to the fuel supply unit 115 through a recovery line. To be returned and resupplied.

여기서, 상기 연료유가 엔진(117)으로 공급되는 공급라인과 엔진(117)에서 연료공급유닛(115)으로 회수되는 회수라인에는 연료유의 냉각을 방지하기 위한 스팀라인이 설치되어 있고, 경유에서 중유로 연료유 절환이 이루어지는 즉시 스팀라인의 제5밸브(VA15)를 개방시켜 스팀이 공급되도록 한다.
Here, a steam line for preventing cooling of the fuel oil is installed in a supply line supplied with the fuel oil to the engine 117 and a recovery line recovered from the engine 117 to the fuel supply unit 115. As soon as the fuel oil is switched, the fifth valve VA15 of the steam line is opened to supply steam.

그리고, 상기 연료공급유닛(115)은 엔진(117)으로 연료를 공급하는 시스템을 구성하는 장비들(펌프, 히터, 필터, 점도계 등)을 한군데 모아 유닛 형태로 구성한 장치로서, 연료유를 순화시키거나 연료에 포함된 불순물과 수분을 제거하여 적정한 점도와 온도를 갖도록 하여 엔진(117)에 공급되도록 한다.In addition, the fuel supply unit 115 is a device configured in a unit form by gathering equipment (pump, heater, filter, viscometer, etc.) constituting a system for supplying fuel to the engine 117, to purify the fuel oil Alternatively, impurities and moisture contained in the fuel may be removed to have an appropriate viscosity and temperature so as to be supplied to the engine 117.

이때, 점도계를 통해 연료유의 점도를 지속적으로 측정하게 되는데, 측정값은 컨트롤박스(120)로 보내져 측정된 점도값이 설정값보다 낮게 되면 냉각콘트롤러(121)를 작동시켜 엔진(117)을 거친 연료유가 연료유 냉각장치(119)로 유입되어 냉각과정을 거치도록 한다.At this time, the viscosity of the fuel oil is continuously measured through the viscometer, and the measured value is sent to the control box 120 and when the measured viscosity value is lower than the set value, the cooling controller 121 is operated to operate the fuel passed through the engine 117. Oil is introduced into the fuel oil cooling device 119 to undergo a cooling process.

이때, 측정된 점도값이 설정값보다 높은 경우에는 연료공급유닛(115) 내의 히터(미도시)를 작동시켜 연료유를 직접 가열할 수도 있다.In this case, when the measured viscosity value is higher than the set value, the fuel oil may be directly heated by operating a heater (not shown) in the fuel supply unit 115.

측정된 점도값이 정상인 경우, 상기 엔진(117)에서 사용되고 남은 연료유(경유 또는 중유)는 회수관을 따라 이동되어 연료유 공급관에 합류하여 연료공급유닛(115)으로 재공급된다.When the measured viscosity value is normal, the remaining fuel oil (light oil or heavy oil) used in the engine 117 is moved along the recovery pipe to join the fuel oil supply pipe and resupplied to the fuel supply unit 115.

이때, 상기 엔진(117)의 후단에 마련된 연료유 냉각장치(119)는 정상 점도값을 갖는 연료유의 유입이 차단되도록 연료유 냉각장치(119)의 입구 및 출구에 설치된 제2밸브(VA12)와 제3밸브(VA13)를 차단한 상태에서 제2밸브(VA12)와 제3밸브(VA13) 사이에 설치된 제4밸브(VA14) 만을 개방시켜 연료유를 통과시키게 된다.
In this case, the fuel oil cooling device 119 provided at the rear end of the engine 117 may include a second valve VA12 installed at the inlet and the outlet of the fuel oil cooling device 119 to block the inflow of fuel oil having a normal viscosity value. In a state where the third valve VA13 is shut off, only the fourth valve VA14 provided between the second valve VA12 and the third valve VA13 is opened to allow the fuel oil to pass therethrough.

다음, 중유에서 경유로 연료유를 절환공급하는 과정으로서, 연료절환밸브(VA11)를 중유쪽에서 경유(MDO)쪽으로 절환시켜 중유가 엔진측에 공급되도록 한다.Next, as a process of switching fuel oil from heavy oil to diesel, the fuel switching valve VA11 is switched from heavy oil to diesel (MDO) so that heavy oil is supplied to the engine side.

이때, 상기 연료절환밸브(VA11)는 스피드콘트롤러(125)에 의해 미리 설정된 절환 시간에 맞춰 단계적인 연료절환이 이루어지게 된다. 연료절환 시간은 60분 이내 마무리되도록 설정할 수 있다.At this time, the fuel switching valve (VA11) is a step-by-step fuel switching is made in accordance with the preset switching time by the speed controller 125. The fuel switching time can be set to finish within 60 minutes.

상기 연료절환밸브(VA11)에서 절환된 연료유는 연료공급유닛(115)을 거쳐 엔진(117)에 공급되고, 엔진(117)에서 사용되고 남은 연료유는 회수라인을 통해 연료공급유닛(115)으로 재공급된다.The fuel oil switched by the fuel switching valve VA11 is supplied to the engine 117 via the fuel supply unit 115, and the remaining fuel oil used in the engine 117 is transferred to the fuel supply unit 115 through a recovery line. Resupply.

여기서, 상기 연료유가 엔진(117)으로 공급되는 공급라인과 엔진(117)에서 연료공급유닛(115)으로 회수되는 회수라인에는 연료유의 냉각을 방지하기 위한 스팀라인이 설치되어 있고, 중유에서 경유로 연료유 절환이 이루어지는 즉시 스팀라인의 제5밸브(VA15)를 닫아 스팀의 공급이 차단되도록 한다.
Here, a steam line for preventing the cooling of the fuel oil is installed in the supply line for supplying the fuel oil to the engine 117 and the recovery line recovered from the engine 117 to the fuel supply unit 115. As soon as the fuel oil is switched, the fifth valve VA15 of the steam line is closed to stop the supply of steam.

그리고, 상기 연료공급유닛(115)에 설치된 점도계를 통해 연료유의 점도를 지속적으로 측정하고, 측정값을 컨트롤박스(120)로 전송하여 측정된 점도값이 설정값보다 낮을 경우, 냉각콘트롤러(121)를 작동시켜 엔진(117)을 거친 연료유가 연료유 냉각장치(119)로 유입되어 냉각과정을 거치도록 한다.Then, the viscosity of the fuel oil is continuously measured through the viscometer installed in the fuel supply unit 115, and the measured value is transmitted to the control box 120, when the measured viscosity value is lower than the set value, the cooling controller 121 By operating the fuel oil passed through the engine 117 flows into the fuel oil cooling device 119 to undergo a cooling process.

이때, 상기 엔진(117)의 후단에 마련된 연료유 냉각장치(119)에는 점도가 낮은 연료유가 유입될 수 있도록 입구측의 제2밸브(VA12)를 개방시키고 제4밸브(VA14)를 폐쇄하게 된다.At this time, the fuel oil cooling device 119 provided at the rear end of the engine 117 opens the second valve VA12 on the inlet side and closes the fourth valve VA14 so that fuel oil having a low viscosity can be introduced therein. .

이때, 상기 제2밸브(VA12)와 제4밸브(VA14)는 컨트롤박스(120)의 냉각콘트롤러(121)의 제어를 받게 된다.In this case, the second valve VA12 and the fourth valve VA14 are controlled by the cooling controller 121 of the control box 120.

상기 제2밸브(VA12)가 개방되어 있는 동안에는 제4밸브(VA14)를 차단시켜 연료유가 우회되는 것을 차단한다.While the second valve VA12 is open, the fourth valve VA14 is blocked to prevent the fuel oil from being bypassed.

상기한 바와 같은 본 발명에 따르면, 연료 절환시(경유→중유 또는 중유→경유), 발생하는 연료유 사이의 온도 변화 편차(1.8~2.0℃/Minute 이하) 및 점도(VISCOSITY) 차이를 제어하는 일련의 과정을 콘트롤박스(120)를 통해 자동 제어할 수 있게 됨에 따라, 연료절환 시스템의 제어가 쉽고, 엔진에 공급되는 연료유의 온도 및 점도를 최적화함으로써, 엔진의 출력 증가 및 사용 효율성을 극대화 하는데 기여하게 된다.
According to the present invention as described above, during the fuel switching (light oil → heavy oil or heavy oil → light oil), a series of controlling the difference in temperature variation (1.8 ~ 2.0 ℃ / minute or less) and the viscosity (VISCOSITY) difference between the generated fuel oil The automatic control of the process through the control box 120, the control of the fuel switching system is easy, and by optimizing the temperature and viscosity of the fuel oil supplied to the engine, contributes to increase the output of the engine and maximize the use efficiency Done.

111:중유탱크 113:경유탱크
115:연료공급유닛 117:엔진
119:연료유 냉각장치 120:컨트롤박스
121:냉각콘트롤러 123:스위치 신호부
125:스피드콘트롤러 VA11:연료절환밸브
VA12:제2밸브 VA13:제3밸브
VA14:제4밸브 VA15:제5밸브111: heavy oil tank 113: diesel oil tank
115: fuel supply unit 117: engine
119: fuel oil cooling device 120: control box
121: cooling controller 123: switch signal unit
125: speed controller VA11: fuel switching valve
VA12: 2nd valve VA13: 3rd valve
VA14: 4th valve VA15: 5th valve

Claims (7)

중유탱크(111) 및 경유탱크(113)의 연료유를 선택적으로 절환시켜 엔진(117)에 공급되도록 하는 연료절환밸브(VA11);
상기 연료절환밸브(VA11)와 엔진(117) 사이에 설치되어 연료유에 포함된 불순물이 제거되도록 하는 연료공급유닛(115);
상기 엔진(117)의 후단에 설치되어 낮은 점도의 연료유를 공급받아 냉각후 토출되도록 하는 연료유 냉각장치(119); 및
상기 연료절환밸브(VA11)를 기설정된 시간 동안 서서히 절환시켜 온도편차가 자동 제어되도록 하는 콘트롤박스(120);를 포함하는 반자동 연료유 절환시스템.
A fuel switching valve VA11 for selectively switching the fuel oil of the heavy oil tank 111 and the light oil tank 113 to be supplied to the engine 117;
A fuel supply unit 115 installed between the fuel switching valve VA11 and the engine 117 to remove impurities contained in the fuel oil;
A fuel oil cooler (119) installed at a rear end of the engine (117) to receive fuel oil having a low viscosity and to be discharged after cooling; And
Semi-automatic fuel oil switching system comprising a; control box 120 for gradually switching the fuel switching valve (VA11) for a predetermined time to automatically control the temperature deviation.
제1항에 있어서,
상기 연료절환밸브(VA11)는 콘트롤박스(120)의 제어신호를 입력받아 연료절환밸브(VA11)의 절환속도가 제어되도록 하는 스피드콘트롤러(125)가 더 설치되는 것을 특징으로 하는 반자동 연료유 절환시스템.
The method of claim 1,
The fuel switching valve (VA11) is a semi-automatic fuel oil switching system characterized in that the speed controller 125 is further installed to receive the control signal of the control box 120 to control the switching speed of the fuel switching valve (VA11) .
제1항에 있어서,
상기 연료공급유닛(115)은 펌프, 히터, 필터 및 점도계가 포함되는 것을 특징으로 하는 반자동 연료유 절환시스템.
The method of claim 1,
The fuel supply unit 115 is a semi-automatic fuel oil switching system, characterized in that it comprises a pump, a heater, a filter and a viscometer.
제3항에 있어서,
상기 연료공급유닛(115) 내에 설치한 점도계로부터 측정된 연료유의 점도값을 제공받는 콘트롤박스(120)는 점도값이 설정값 이하일 경우, 연료유 냉각장치(119)의 공급측에 설치된 제2밸브(VA12)를 개방시켜 연료유가 유입되도록 하고, 유입된 연료유가 냉각과정을 거쳐 토출되도록 하여 연료유의 점도가 자동 제어되도록 하는 것을 특징으로 하는 반자동 연료유 절환시스템.
The method of claim 3,
The control box 120 which receives the viscosity value of the fuel oil measured from the viscometer installed in the fuel supply unit 115 has a second valve installed at the supply side of the fuel oil cooling device 119 when the viscosity value is less than or equal to the set value. Semi-automatic fuel oil switching system characterized in that the opening of VA12) to allow the fuel oil to be introduced, and the introduced fuel oil is discharged through the cooling process to automatically control the viscosity of the fuel oil.
제3항에 있어서,
상기 연료공급유닛(115) 내에 설치한 점도계로부터 측정된 연료유의 점도값을 제공받는 콘트롤박스(120)는 점도값이 설정값 이상일 경우, 히터를 가동시켜 연료유가 가열되도록 하여 연료유의 점도가 자동 제어되도록 하는 것을 특징으로 하는 반자동 연료유 절환시스템.
The method of claim 3,
The control box 120 that receives the viscosity value of the fuel oil measured from the viscometer installed in the fuel supply unit 115, when the viscosity value is more than the set value, by operating the heater to heat the fuel oil to control the viscosity of the fuel oil automatically Semi-automatic fuel oil switching system characterized in that.
제4항에 있어서,
상기 연료유 냉각장치(119)의 토출 측에 설치되는 제3밸브(VA13)를 역류방지밸브로 구성하는 것을 특징으로 하는 반자동 연료유 절환시스템.
The method of claim 4, wherein
Semi-automatic fuel oil switching system characterized in that the third valve (VA13) provided on the discharge side of the fuel oil cooling device (119) as a non-return valve.
제1항에 있어서,
상기 엔진(117)측으로 공급되는 연료유의 공급라인 및 회수라인에 연료유의 점도 관리를 위한 스팀라인이 설치되도록 하되, 연료절환밸브(VA11)가 경유에서 중유로 절환되는 경우 스팀이 공급되고, 중유에서 경유로 절환되는 경우 스팀공급이 차단되도록 상기 스팀라인의 공급측에 설치된 제5밸브(VA15)를 콘트롤박스(120) 신호에 의해 자동 제어되도록 하는 것을 특징으로 하는 반자동 연료유 절환시스템.The method of claim 1,
The steam line for the viscosity management of the fuel oil is to be installed in the supply line and the recovery line of the fuel oil supplied to the engine 117 side, the steam is supplied when the fuel switching valve (VA11) is switched from light oil to heavy oil, Semi-automatic fuel oil switching system, characterized in that the fifth valve (VA15) installed on the supply side of the steam line to be automatically controlled by the signal of the control box 120 so that the steam supply is blocked when switching to the diesel.
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