KR20120075941A - Lng bunkering vessel using liquefied fuel gas supply for vapour reliquefaction - Google Patents

Lng bunkering vessel using liquefied fuel gas supply for vapour reliquefaction Download PDF

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KR20120075941A
KR20120075941A KR1020100137863A KR20100137863A KR20120075941A KR 20120075941 A KR20120075941 A KR 20120075941A KR 1020100137863 A KR1020100137863 A KR 1020100137863A KR 20100137863 A KR20100137863 A KR 20100137863A KR 20120075941 A KR20120075941 A KR 20120075941A
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South Korea
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gas
boil
liquefied fuel
fuel gas
line
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KR1020100137863A
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Korean (ko)
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장해기
서광수
변철욱
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삼성중공업 주식회사
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Priority to KR1020100137863A priority Critical patent/KR20120075941A/en
Publication of KR20120075941A publication Critical patent/KR20120075941A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/26—Arrangement of ship-based loading or unloading equipment for cargo or passengers of devices with throwing action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/001—Thermal insulation specially adapted for cryogenic vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • 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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases

Abstract

PURPOSE: An LNG tank vessel for using LNG to reliquefaction of boil-off gas is provided to effectively manage the operation of a facility by heat-exchanging boil-off gas returning through a boil-off gas return pipe and LNG supplied through a fuel supply pipe in real time for liquefaction. CONSTITUTION: An LNG tank vessel for using LNG to reliquefaction of boil-off gas comprises a fuel feeding line(300), a boil-off gas line(310), a heat exchanger(400), and a compressor(500). The fuel feeding line supplies LNG from a storage tank of the LNG tank vessel to a fuel tank of a LNG propelled vessel. The boil-off gas line supplies boil-off gas from the fuel tank to the storage tank. The heat exchanger is installed through the fuel feeding line and the boil-off gas line and heat exchanges the LNG supplying from the storage tank and the boil-off gas forcibly transferred and pressurized from the fuel tank. The compressor is installed in the boil-off gas line and compresses the boil-off gas of the fuel tank to make the pressurized boil-off gas.

Description

액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선{LNG BUNKERING VESSEL USING LIQUEFIED FUEL GAS SUPPLY FOR VAPOUR RELIQUEFACTION}LNG fuel tanker using liquefied fuel gas supply for reliquefaction of boil-off gas {LNG BUNKERING VESSEL USING LIQUEFIED FUEL GAS SUPPLY FOR VAPOUR RELIQUEFACTION}

본 발명은 액화연료가스를 연료로 사용하는 선박에 대하여 해상에서 액화연료가스를 급유하도록 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선 에 관한 것이다.
The present invention relates to a liquefied fuel gas oil supply line using a liquefied fuel gas supply for re-liquefaction of liquefied fuel gas so as to refuel liquefied fuel gas at sea for a vessel using liquefied fuel gas as fuel.

일반적으로, 천연가스는 육상 또는 해상의 가스배관을 통해 가스 상태로 운반되거나, 액화된 액화천연가스(Liquefied Natural Gas, 이하, 'LNG'라 함)의 상태로 LNG 수송선에 저장되어 원거리의 수요처로 운반된다.In general, natural gas is transported in gas state through onshore or offshore gas piping, or stored in LNG carriers in the form of liquefied natural gas (LNG). Is carried.

이러한 LNG는 일종의 액화연료가스로 이해될 수 있는 것으로서, 천연가스를 대략 -163도씨의 극저온 상태로 냉각하여 얻어지고, 가스 상태의 천연가스일 때보다 그 부피가 대략 1/600로 줄어들게 되므로 해상을 통한 원거리 운반에 매우 적합하다.This LNG can be understood as a kind of liquefied fuel gas, obtained by cooling the natural gas to a cryogenic state of approximately -163 degrees Celsius, and its volume is reduced to approximately 1/600 than that of natural gas in the gas state, so Very suitable for long distance transport through

종래 기술에 따른 액화연료가스 급유선은 대한민국 특허출원 제10-2009-0098986호로 개시되어 있는 바와 같이, 액화연료가스 저장 탱크, 상기 연료가스 저장 탱크와 연결되어 액화연료가스 추진 선박에 연료를 공급하기 위한 연료공급관, 상기 액화연료가스 추진 선박의 액화연료가스 연료 탱크에서 발생하는 증발 가스를 회수하기 위한 증발 가스 회수관을 포함하고 있다.The liquefied fuel gas tanker according to the prior art is connected to the liquefied fuel gas storage tank, the fuel gas storage tank, as disclosed in the Republic of Korea Patent Application No. 10-2009-0098986 to supply fuel to the liquefied fuel gas propulsion vessel And a fuel supply pipe and an evaporation gas recovery pipe for recovering the evaporated gas generated from the liquefied fuel gas fuel tank of the liquefied fuel gas propulsion vessel.

여기서, 액화연료가스 급유선으로부터 액화연료가스 추진 선박의 액화연료가스 연료 탱크로 액화연료가스를 공급 시, 액화연료가스 추진 선박의 액화연료가스 연료 탱크에는 기존의 탱크 내 존재하는 증발가스(vapour)에 의한 압력과, 추가로 액화연료가스 급유선으로부터 공급된 액화연료가스에 의해서 가압된 압력에 의해 압력이 상승하게 된다.Here, when liquefied fuel gas is supplied from a liquefied fuel gas supply line to a liquefied fuel gas fuel tank of a liquefied fuel gas propulsion vessel, the liquefied fuel gas fuel tank of a liquefied fuel gas propulsion vessel is provided with a vapor in the existing tank. The pressure increases due to the pressure caused by the pressure and the pressure of the liquefied fuel gas supplied from the liquefied fuel gas supply line.

이 상승된 압력으로 인한 액화연료가스 추진 선박의 액화연료가스 연료 탱크의 변형 및 파괴를 방지하기 위해서는, 탱크 안의 증발가스는 어떠한 처리 없이 증발가스 회수관을 통해 액화연료가스 급유선의 처리설비로 단순히 회수된다.In order to prevent deformation and destruction of the liquefied fuel gas fuel tank of the liquefied fuel gas propulsion vessel due to this elevated pressure, the boil-off gas in the tank is simply recovered through the boil-off gas recovery pipe to the treatment facility of the liquefied fuel gas supply line without any treatment. do.

그러나, 종래 기술에 따른 액화연료가스 급유선은 상호 별개로 연료공급관과 증발가스 회수관을 마련하고 있음에 따라, 증발가스 회수관을 통해 회수되는 증발가스가 어떠한 처리도 없이 액화연료가스 급유선 쪽으로 유입되어, 상대적으로 액화상태에 비해 다루기 힘든 가스 상태의 증발가스를 처리하는데 많은 어려움이 있다.However, the liquefied fuel gas supply line according to the prior art has a fuel supply pipe and an evaporation gas recovery pipe separately from each other, so that the evaporated gas recovered through the evaporation gas recovery pipe flows into the liquefied fuel gas supply line without any treatment. However, there are many difficulties in dealing with a gaseous gas which is relatively difficult to handle compared to a liquefied state.

예컨대, 종래 기술에 따른 액화연료가스 급유선은 단순히 증발가스 회수관을 경유하여 회수된 증발가스를 DFDE(Dual Fuel Diesel Electric) 엔진 또는 ME-GI 엔진에 사용할 수 있도록 복잡한 설비를 더 구비하여야 하거나, 별도로 많은 공간을 차지하거나 고가인 재액화 유닛을 액화연료가스 급유선에 더 설비시켜 처리하고 있어서, 액화연료가스의 공급 자체를 증발가스 재액화에 직접적으로 이용할 수 없으므로, 액화연료가스의 공급 도중에 효율적으로 증발가스를 처리할 수 없는 단점을 갖는다.
For example, the liquefied fuel gas tanker according to the prior art should be further equipped with a complicated facility so that the boil-off gas recovered through the boil-off gas recovery pipe can be used in a DFDE (Dual Fuel Diesel Electric) engine or a ME-GI engine or separately. The reliquefaction unit, which takes up a lot of space or is expensive, is further installed in the liquefied fuel gas oil supply line, so that the supply of liquefied fuel gas cannot be directly used for reliquefaction of the boil-off gas, thus efficiently evaporating during the supply of liquefied fuel gas. It has the disadvantage of not being able to process the gas.

본 발명의 실시예는 상기한 문제점들을 해결하기 위하여 안출된 것으로서, 급유시의 액화연료가스가 압축기로 강제 이송 및 가압된 증발가스와 열교환함에 따라, 액화연료가스의 급유 도중에 증발가스를 처리할 수 있는 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선을 제공하고자 한다.
An embodiment of the present invention has been made to solve the above problems, as the liquefied fuel gas during refueling is forced to the compressor and heat exchanged with the pressurized boil-off gas, it is possible to process the boil-off gas during lubrication of the liquefied fuel gas To provide a liquefied fuel gas feeder using the liquefied fuel gas supply to re-liquefy the boil-off gas.

본 발명의 일 측면에 따르면, 액화연료가스 급유선의 저장 탱크로부터 액화연료가스를 액화연료가스 추진 선박의 연료 탱크에 공급하는 급유라인과, 상기 연료 탱크로부터 증발가스를 상기 저장 탱크에 공급하는 증발가스라인과, 상기 급유라인 및 증발가스라인에 걸쳐 설치되고, 상기 저장 탱크로부터 공급되는 액화연료가스와 상기 연료 탱크로부터 강제 이송되고 가압된 증발가스를 열교환하는 열교환기와, 상기 증발가스라인에 설치되고, 상기 연료 탱크의 증발가스를 압축하여 상기 가압된 증발가스를 만드는 압축기를 포함하는 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선이 제공될 수 있다.According to an aspect of the present invention, a fuel supply line for supplying liquefied fuel gas to the fuel tank of the liquefied fuel gas propulsion ship from the storage tank of the liquefied fuel gas oil supply line, and the evaporation gas for supplying the evaporated gas from the fuel tank to the storage tank A heat exchanger installed over the line, the oil supply line and the boil-off gas line, and a heat exchanger for heat-exchanging the liquefied fuel gas supplied from the storage tank and the boil-off gas forcedly transferred from the fuel tank and pressurized by the boil-off gas line, A liquefied fuel gas supply line using a liquefied fuel gas supply including a compressor for compressing the boil-off gas of the fuel tank to produce the pressurized boil-off gas for re-liquefying the boil-off gas may be provided.

또한, 급유라인 및 상기 증발가스라인에는 초저온 커넥터가 각각 마련될 수 있다.In addition, the refrigeration line and the boil-off gas line may be provided with cryogenic connectors, respectively.

또한, 압축기의 전단과 후단측 증발가스라인에 배관된 바이패스라인과, 상기 증발가스라인에 설치된 제 1 밸브와, 상기 바이패스라인에 설치된 제 2 밸브를 더 포함할 수 있다.
The apparatus may further include a bypass line piped to the front end and the rear end boil-off gas lines of the compressor, a first valve installed on the boil-off gas line, and a second valve provided on the bypass line.

본 발명의 실시예는 열교환기를 경유하는 연료공급관과 증발가스 회수관을 제공함에 따라, 증발가스 회수관을 통해 회수되는 증발가스가 실시간으로 연료공급관을 통해 공급되는 액화연료가스와 열교환하여 액화될 수 있고, 이에 따라 증발가스를 복잡한 DFDE 엔진 또는 ME-GI 엔진용 설비 또는 별도의 재액화 유닛을 통해 처리할 필요가 없어, 상대적으로 설비 운용을 효율적으로 수행할 수 있게 해준다.According to an embodiment of the present invention, as the fuel supply pipe and the boil-off gas recovery tube via the heat exchanger are provided, the boil-off gas recovered through the boil-off gas recovery tube may be liquefied by heat-exchanging with the liquefied fuel gas supplied through the fuel supply tube in real time. This eliminates the need to treat the boil-off gas through complex DFDE engines or ME-GI engines or through separate reliquefaction units, thus allowing relatively efficient plant operation.

또한, 본 발명의 실시예는 액화연료가스의 급유 도중 실시간으로 압축기로 증발가스를 강제 이송시키기 때문에, 액화연료가스 추진 선박의 액화연료가스 연료 탱크 내부에서 증발가스에 의한 압력 상승을 미연에 방지하여, 액화연료가스 연료 탱크를 안전하게 보호할 수 있다.
In addition, since the embodiment of the present invention forcibly transfers the boil-off gas to the compressor in real time during the refueling of the liquefied fuel gas, the pressure rise by the boil-off gas in the liquefied fuel gas fuel tank of the liquefied fuel gas propulsion vessel is prevented in advance. In addition, the liquefied fuel gas fuel tank can be safely protected.

도 1은 본 발명의 제 1 실시예에 따른 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선과 액화연료가스 추진 선박을 도시한 구성도이다.
도 2는 본 발명의 제 2 실시예에 따른 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선과 액화연료가스 추진 선박을 도시한 구성도이다.1 is a block diagram illustrating a liquefied fuel gas supply line and a liquefied fuel gas propulsion vessel using the liquefied fuel gas supply according to the first embodiment of the present invention for the reliquefaction of the boil-off gas.
2 is a block diagram illustrating a liquefied fuel gas supply line and a liquefied fuel gas propulsion vessel using the liquefied fuel gas supply according to a second embodiment of the present invention for reliquefaction of an evaporated gas.

이하, 본 발명의 실시예를 첨부된 도면을 참조하여 상세히 설명하기로 한다. 아울러 본 발명을 설명함에 있어서, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

도 1은 본 발명의 제 1 실시예에 따른 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선과 액화연료가스 추진 선박을 도시한 구성도이다.1 is a block diagram illustrating a liquefied fuel gas supply line and a liquefied fuel gas propulsion vessel using the liquefied fuel gas supply according to the first embodiment of the present invention for the reliquefaction of the boil-off gas.

도 1을 참조하면, 본 실시예는 액화연료가스 급유선(100)과 액화연료가스 추진 선박(200) 사이에서 공급, 즉 급유 중 액화연료가스를 증발가스 재액화에 이용하도록 되어 있다.Referring to FIG. 1, in this embodiment, the liquefied fuel gas in lubrication is used to supply the liquefied fuel gas between the liquefied fuel gas supply line 100 and the liquefied fuel gas propulsion vessel 200 to re-liquefy the boil-off gas.

본 발명의 설명에서, 급유는 유체인 액화연료가스를 액화연료가스 급유선(100)이 액화연료가스 추진 선박(200)에 공급하는 것을 의미할 수 있다.In the description of the present invention, lubrication may mean that the liquefied fuel gas supply line 100 to supply the liquefied fuel gas as a fluid to the liquefied fuel gas propulsion vessel 200.

본 실시예는 급유라인(300), 증발가스라인(310), 열교환기(400), 압축기(500)를 제공할 수 있다.The present embodiment may provide an oil supply line 300, an evaporation gas line 310, a heat exchanger 400, and a compressor 500.

액화연료가스 급유선(100)의 저장 탱크(110)는 IGC 코드(국제액화가스운송선의 구조 및 설비기준)에 언급된 어떠한 종류의 탱크 형태라도 사용될 수 있다.The storage tank 110 of the liquefied fuel gas tanker 100 may be any type of tank mentioned in the IGC code (structure and equipment standards of the international liquefied gas carrier).

즉, 저장 탱크(110)는 멤브레인, A, B 및 C 타입 탱크 중 어느 하나일 수 있다.That is, the storage tank 110 may be any one of membrane, A, B and C type tanks.

급유라인(300)은 액화연료가스 급유선(100)의 저장 탱크(110) 내부의 하부측 메인 펌프(120)으로부터 액화연료가스 추진 선박(200)의 연료 탱크(210) 내부의 하부측 출구까지 연결되어 있다.The refueling line 300 is connected from the lower main pump 120 inside the storage tank 110 of the liquefied fuel gas oil supply line 100 to the lower outlet inside the fuel tank 210 of the liquefied fuel gas propulsion vessel 200. It is.

급유라인(300)에는 액화연료가스 급유선(100)과 액화연료가스 추진 선박(200)의 도킹 또는 언도킹시, 급유라인(300)의 연결 또는 분리를 위한 제 1 초저온 커넥터(301)가 설치되어 있을 수 있다.When the docking or undocking of the liquefied fuel gas fueling line 100 and the liquefied fuel gas propulsion vessel 200, the refueling line 300 is provided with a first cryogenic connector 301 for connecting or disconnecting the refueling line 300 There may be.

증발가스라인(310)은 액화연료가스 급유선(100)의 저장 탱크(110) 내부의 하부측 출구로부터 액화연료가스 추진 선박(200)의 연료 탱크(210) 내부의 상부측 입구까지 연결되어 있다.The boil-off gas line 310 is connected to the upper side inlet of the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 from the lower side outlet of the storage tank 110 of the liquefied fuel gas oil supply line 100.

증발가스라인(310)에는 액화연료가스 급유선(100)과 액화연료가스 추진 선박(200)의 도킹 또는 언도킹시, 증발가스라인(310)의 연결 또는 분리를 위한 제 2 초저온 커넥터(302)가 설치되어 있을 수 있다.The boil-off gas line 310 has a second cryogenic connector 302 for connecting or disconnecting the boil-off gas line 310 when docking or undocking the liquefied fuel gas supply line 100 and the liquefied fuel gas propulsion vessel 200. It may be installed.

열교환기(400)는 액화연료가스 급유선(100)의 저장 탱크(110)으로부터 공급되는 액화연료가스와 액화연료가스 추진 선박(200)의 연료 탱크(210)로부터 강제 이송되고 가압된 증발가스를 열교환하여 액화시키도록, 급유라인(300) 및 증발가스라인(310)에 걸쳐 설치되어 있을 수 있다.The heat exchanger 400 heat exchanges the liquefied fuel gas supplied from the storage tank 110 of the liquefied fuel gas oil supply line 100 and the boil-off gas forcedly transferred from the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 and pressurized. It may be installed over the oil supply line 300 and the boil-off gas line 310 to liquefy.

열교환기(400)는 액화연료가스 급유선(100)에 미리 마련된 설치 위치에 설치되어 있을 수 있다.The heat exchanger 400 may be installed at an installation position prepared in advance in the liquefied fuel gas oil supply line 100.

열교환기(400)는 일종의 LNG인 액화연료가스와 미리 설정한 압력으로 가압된 증발가스, 즉 압축된 증발가스 사이에서 열교환을 수행하는 초저온용 열교환기(Cryogenic Heat Exchanger)일 수 있다.The heat exchanger 400 may be a cryogenic heat exchanger that performs heat exchange between the liquefied fuel gas, which is a kind of LNG, and the boiled gas pressurized at a predetermined pressure, that is, the compressed boiled gas.

즉, 열교환기(400)에서 상대적으로 차가운 냉매(Cold Refrigerant)의 역할은 액화연료가스 급유선(100)의 저장 탱크(110)으로부터 공급되는 액화연료가스가 하게 되고, 열교환하려는 대상물은 압축기(500)를 통해 압축기(500)로 유입될 때의 증발가스 온도보다 상대적으로 승온되고 가압된 증발가스가 될 수 있다.That is, the role of the relatively cold refrigerant in the heat exchanger 400 is the liquefied fuel gas supplied from the storage tank 110 of the liquefied fuel gas oil supply line 100, the object to be exchanged is the compressor 500 The boil-off gas may be boil-off gas that is relatively heated and pressurized than the boil-off gas temperature when it is introduced into the compressor 500.

압축기(500)는 열교환기(400)의 증발가스 입구 전방쪽 증발가스라인(310)에 설치되어, 액화연료가스 추진 선박(200)의 연료 탱크(210)의 증발가스를 열교환기(400) 쪽으로 강제 이송시키도록 증발가스를 열교환기(400)의 설계값에 대응하게 압축시키는 역할을 담당할 수 있다.The compressor 500 is installed in the boil-off gas line 310 in front of the boil-off gas inlet of the heat-exchanger 400, and directs the boil-off gas of the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 toward the heat-exchanger 400. It may play a role of compressing the boil-off gas to correspond to the design value of the heat exchanger 400 to force the transfer.

즉, 압축기(500)는 액화천연가스 추진 선박(200)의 연료 탱크(210)로부터 그의 증발가스를 액화연료가스 급유선(100)의 저장 탱크(110) 쪽으로 강제 이송 및 가압시킬 수 있다.That is, the compressor 500 may forcibly transfer and pressurize its boil-off gas from the fuel tank 210 of the liquefied natural gas propulsion vessel 200 toward the storage tank 110 of the liquefied fuel gas oil supply line 100.

이런 압축기(500)는 액화연료가스 급유선(100)에 미리 마련된 설치 위치 또는 열교환기(400) 주변에 설치되어 있을 수 있다.The compressor 500 may be installed around the heat exchanger 400 or an installation position prepared in advance in the liquefied fuel gas oil supply line 100.

또한, 액화연료가스 급유선(100)는 선박제어 시스템(미 도시)에 더 마련되어 있어서, 메인 펌프(120)를 포함한 각종 펌프, 밸브, 열교환기(400), 압축기(500), 계측기 등을 제어할 수 있도록 되어 있다. 여기서, 선박제어 시스템은 통상적으로 AMS(Alarm Monitoring System) 또는 ICMS(Integrated Control & Monitoring System) 일 수 있다.In addition, the liquefied fuel gas oil supply line 100 is further provided in a ship control system (not shown) to control various pumps, valves, heat exchangers 400, compressors 500, measuring instruments, etc., including the main pump 120. It is supposed to be. Here, the ship control system may typically be an alarm monitoring system (AMS) or an integrated control & monitoring system (ICMS).

이하, 본 실시예의 작동 원리에 대해서 설명하도록 하겠다.Hereinafter, the operating principle of the present embodiment will be described.

액화연료가스 급유선(100)과 액화연료가스 추진 선박(200)은 상호 도킹 후, 제 1, 제 2 초저온 커넥터(301, 302)의 체결에 따라, 급유라인(300) 또는 증발가스라인(310)도 각각 연결될 수 있다.The liquefied fuel gas oil supply line 100 and the liquefied fuel gas propulsion vessel 200 are docked with each other, and according to the fastening of the first and second cryogenic connectors 301 and 302, the oil supply line 300 or the evaporation gas line 310. Each may be connected.

액화연료가스 급유선(100)의 선박제어 시스템은 메인 펌프(120)를 작동시켜서, 액화연료가스 급유선(100)의 저장 탱크(110)로부터 액화연료가스 추진 선박(200)의 연료 탱크(210)로 액화연료가스의 공급이 급유라인(300)을 통해 이루어질 수 있게 한다.The vessel control system of the liquefied fuel gas fueling vessel 100 operates the main pump 120 to transfer the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 from the storage tank 110 of the liquefied fuel gas fueling vessel 100. The liquefied fuel gas can be supplied through the oil supply line 300.

이에 따라, 액화연료가스는 급유라인(300)을 통해 열교환기(400)과, 제 1 초저온 커넥터(301)를 경유하여 액화연료가스 추진 선박(200)의 연료 탱크(210)에 공급될 수 있다.Accordingly, the liquefied fuel gas may be supplied to the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 via the heat exchanger 400 and the first cryogenic connector 301 through the oil supply line 300. .

이런 경우, 액화연료가스 추진 선박(200)의 연료 탱크(210)에는 기존의 탱크 내 존재하는 증발가스와 추가로 액화연료가스 급유선(100)의 저장 탱크(110)로부터 공급된 액화연료가스에 의해서 가압이 발생하게 된다.In this case, the fuel tank 210 of the liquefied fuel gas propulsion vessel 200 is provided by the liquefied fuel gas supplied from the storage tank 110 of the liquefied fuel gas oil supply line 100 and the evaporated gas existing in the existing tank. Pressurization will occur.

이렇게 발생된 압력으로 인한 연료 탱크(210)의 변형 및 파괴를 방지하기 위해, 연료 탱크(210)안의 증발가스는 그의 처리를 위해 증발가스라인(310) 쪽으로 공급될 수 있다.In order to prevent deformation and destruction of the fuel tank 210 due to the pressure generated in this way, the boil-off gas in the fuel tank 210 may be supplied toward the boil-off gas line 310 for processing thereof.

특히, 액화연료가스 급유선(100)의 선박제어 시스템은 압축기(500)를 작동시켜, 증발가스라인(310) 쪽으로 유입된 증발가스를 강제 이송시킬 수 있다.In particular, the vessel control system of the liquefied fuel gas oil supply line 100 may operate the compressor 500 to forcibly transport the boil-off gas introduced into the boil-off gas line 310.

즉, 강제 이송된 증발가스는 압축기(500)를 통과하면서 압축됨에 따라, 가압된 증발가스가 될 수 있다.That is, the forcedly transported boil-off gas may be compressed boil-off gas as it is compressed while passing through the compressor 500.

이후, 가압된 증발가스는 열교환기(400)에서 상기 공급 중인 저온의 액화연료가스와 열교환하여 저온 고압의 증발가스가 될 수 있다.Thereafter, the pressurized boil-off gas may be heat-exchanged with the low-temperature liquefied fuel gas being supplied by the heat exchanger 400 to become a low-temperature, high-pressure boil-off gas.

저온 고압의 증발가스는 계속해서 증발가스라인(310)를 따라 유동하여 액화연료가스 급유선(100)의 저장 탱크로 이송되어 압력이 낮아지면서 액화될 수 있다.The low temperature high pressure evaporation gas may continue to flow along the evaporation gas line 310 to be transferred to the storage tank of the liquefied fuel gas oil supply line 100 to liquefy as the pressure is lowered.

제 2 실시예는 자체 압축기(500a)를 갖는 액화연료가스 추진 선박(200a)에도 적용될 수 있는 것을 특징으로 한다. 아울러, 제 2 실시예에서의 설명에서는 제 1 실시예에서 기 설명된 내용에 대하여 중복을 피하기 위해 생략될 수 있다. The second embodiment is also applicable to the liquefied fuel gas propulsion vessel 200a having its own compressor 500a. In addition, the description in the second embodiment may be omitted to avoid duplication with respect to the contents previously described in the first embodiment.

도 2는 본 발명의 제 2 실시예에 따른 액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선과 액화연료가스 추진 선박을 도시한 구성도이다.2 is a block diagram illustrating a liquefied fuel gas supply line and a liquefied fuel gas propulsion vessel using the liquefied fuel gas supply according to a second embodiment of the present invention for reliquefaction of an evaporated gas.

도 2를 참조하면, 즉, 액화연료가스 추진 선박(200a)에 자체적으로 증발가스를 강제 이송 및 가압하기 위한 자체 압축기(500a)가 액화연료가스 추진 선박(200a) 측의 증발가스라인(310)에 더 마련되어 있을 수 있다.2, that is, the self-compressor 500a for forcibly transporting and pressurizing the boil-off gas to the liquefied fuel gas propulsion vessel 200a has a boil-off gas line 310 on the side of the liquefied fuel gas propulsion vessel 200a. May be further provided.

이럴 경우, 액화연료가스 급유선(100)은 제 1 실시예와 달리, 자체 압축기(500a)를 사용하는 액화연료가스 추진 선박(200a)에게 액화연료가스를 공급하면서 증발가스를 처리할 때, 열교환기(400)에 적합한 압력 환경을 제공하기 위해서, 밸브(511, 512) 및 바이패스라인(520)을 더 포함할 수 있다.In this case, the liquefied fuel gas oil supply line 100, unlike the first embodiment, when processing the evaporated gas while supplying the liquefied fuel gas to the liquefied fuel gas propulsion vessel 200a using its own compressor 500a, the heat exchanger Valves 511 and 512 and bypass lines 520 may be further included to provide a suitable pressure environment for 400.

밸브(511, 512)는 액화연료가스 급유선(100)의 선박제어 시스템에 의해 개폐 작동이 제어될 수 있도록 구성될 수 있다.The valves 511 and 512 may be configured so that the opening and closing operation can be controlled by the ship control system of the liquefied fuel gas oil supply line 100.

바이패스라인(520)은 압축기(500)의 전단과 후단측 증발가스라인(310)에서 배관되어 있을 수 있다.The bypass line 520 may be piped at the front and rear end evaporation gas line 310 of the compressor 500.

또한, 증발가스라인(310)에 설치된 제 1 밸브(511)의 폐쇄 및 바이패스라인(520)에 설치된 제 2 밸브(512)의 개방시, 액화연료가스 추진 선박(200a)의 자체 압축기(500a)에 의해 압축된 증발가스는 액화연료가스 급유선(100)의 압축기(500)를 바이패스하여 열교환기(400) 쪽으로 공급될 수 있다.In addition, when the first valve 511 installed in the boil-off gas line 310 and the second valve 512 provided in the bypass line 520 are opened, the compressor 500a of the liquefied fuel gas propulsion vessel 200a is opened. The compressed boil-off gas may be supplied to the heat exchanger 400 by bypassing the compressor 500 of the liquefied fuel gas oil supply line 100.

이상에서와 같이, 본 발명의 상세한 설명에서 구체적인 실시예에 관해 설명하였으나, 본 발명의 기술이 당업자에 의하여 용이하게 변형 실시될 가능성이 자명하며, 이러한 변형된 실시예들은 본 발명의 특허청구범위에 기재된 기술사상에 포함된다 할 것이다.
As described above, specific embodiments have been described in the detailed description of the present invention, but it is obvious that the technology of the present invention can be easily modified by those skilled in the art, and such modified embodiments are defined in the claims of the present invention. It will be included in the technical idea described.

100 : 액화연료가스 급유선 110 : 저장 탱크
200, 200a : 액화연료가스 추진 선박 210 : 연료 탱크
300 : 급유라인 310 : 증발가스라인
400 : 열교환기 500, 500a : 압축기
511, 512 : 밸브 520 : 바이패스라인100: liquefied fuel gas oil supply line 110: storage tank
200, 200a: liquefied fuel gas propulsion vessel 210: fuel tank
300: oil supply line 310: boil off gas line
400: heat exchanger 500, 500a: compressor
511, 512: valve 520: bypass line

Claims (3)

액화연료가스 급유선의 저장 탱크로부터 액화연료가스를 액화연료가스 추진 선박의 연료 탱크에 공급하는 급유라인과,
상기 연료 탱크로부터 증발가스를 상기 저장 탱크에 공급하는 증발가스라인과,
상기 급유라인 및 증발가스라인에 걸쳐 설치되고, 상기 저장 탱크로부터 공급되는 액화연료가스와 상기 연료 탱크로부터 강제 이송되고 가압된 증발가스를 열교환하는 열교환기와,
상기 증발가스라인에 설치되고, 상기 연료 탱크의 증발가스를 압축하여 상기 가압된 증발가스를 만드는 압축기를 포함하는
액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선.
A lubrication line for supplying liquefied fuel gas from the storage tank of the liquefied fuel gas supply line to the fuel tank of the liquefied fuel gas propulsion vessel;
An evaporating gas line for supplying the evaporating gas from the fuel tank to the storage tank;
A heat exchanger installed over the oil supply line and the boil-off gas line and heat-exchanging the liquefied fuel gas supplied from the storage tank and the boil-off gas forcedly transferred from the fuel tank and pressurized;
A compressor installed in the boil-off gas line and compressing the boil-off gas of the fuel tank to produce the pressurized boil-off gas;
A liquefied fuel gas feeder using liquefied fuel gas supply to re-liquefy evaporated gas.
제1항에 있어서,
상기 급유라인 및 상기 증발가스라인에는 초저온 커넥터가 각각 마련되어 있는
액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선.
The method of claim 1,
The refueling line and the boil-off gas line are each provided with cryogenic connectors
A liquefied fuel gas feeder using liquefied fuel gas supply to re-liquefy evaporated gas.
제1항에 있어서,
상기 압축기의 전단과 후단측 증발가스라인에 배관된 바이패스라인과,
상기 증발가스라인에 설치된 제 1 밸브와,
상기 바이패스라인에 설치된 제 2 밸브를 더 포함하는
액화연료가스공급을 증발가스 재액화에 이용한 액화연료가스 급유선.The method of claim 1,
Bypass lines piped to the front and rear end of the compressor boil-off gas line,
A first valve installed in the boil-off gas line,
Further comprising a second valve installed in the bypass line
A liquefied fuel gas feeder using liquefied fuel gas supply to re-liquefy evaporated gas.
KR1020100137863A 2010-12-29 2010-12-29 Lng bunkering vessel using liquefied fuel gas supply for vapour reliquefaction KR20120075941A (en)

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KR101413544B1 (en) * 2013-05-06 2014-07-02 주식회사래티스테크놀로지 A Temporary Boil-off Gas Storage System
WO2014182017A1 (en) * 2013-05-06 2014-11-13 주식회사래티스테크놀로지 Boil-off gas temporary storage system
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WO2016200170A1 (en) * 2015-06-09 2016-12-15 현대중공업 주식회사 Vessel comprising gas treatment system
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JP2018127137A (en) * 2017-02-09 2018-08-16 三菱重工業株式会社 Liquid gas fuel vessel for liquid gas transportation
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KR20190063920A (en) 2017-11-30 2019-06-10 삼성중공업 주식회사 Operating method of liquefied gas carrier

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