KR100650606B1 - Cargo for liquefied gas tank ship - Google Patents

Cargo for liquefied gas tank ship Download PDF

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Publication number
KR100650606B1
KR100650606B1 KR1020050057240A KR20050057240A KR100650606B1 KR 100650606 B1 KR100650606 B1 KR 100650606B1 KR 1020050057240 A KR1020050057240 A KR 1020050057240A KR 20050057240 A KR20050057240 A KR 20050057240A KR 100650606 B1 KR100650606 B1 KR 100650606B1
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South Korea
Prior art keywords
cargo tank
liquefied gas
residual oil
cargo
temporary
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KR1020050057240A
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Korean (ko)
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정상용
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삼성중공업 주식회사
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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 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A cargo tank for a ship for storing liquefied gas is provided to increase the cargo retrieving rate of the ship by minimizing the residual amount in the cargo tank. A cargo tank for a ship for storing liquefied gas includes a stripping pump(200), a temporary retainer(202), an introduction pipe(204), and a non-return unit(206). The stripping pump is provided to pull up the residual liquefied gas. The temporary retainer is located around the stripping pump and is installed on the bottom of the cargo tank. The introduction pipe introduces the residual oil to the temporary retainer. The non-return unit is mounted to the introduction pipe and allow a fluid to flow only to the inner side of the temporary retainer.

Description

액화 가스를 저장하는 선박용 카고 탱크{Cargo for liquefied gas tank ship}Cargo for liquefied gas tank ship}

도 1은 종래의 오일을 저장하는 유조선용 카고 탱크의 단면도이다.1 is a cross-sectional view of a tanker cargo tank for storing the conventional oil.

도 2는 본 발명의 일실시예에 따른 액화 가스를 저장하는 선박용 카고 탱크의 단면도이다.2 is a cross-sectional view of a cargo tank for ships for storing liquefied gas according to an embodiment of the present invention.

도 3은 본 발명의 또 다른 실시예인 고무 스커트를 역지(Non-return) 장치로 사용한 경우의 액화 가스를 저장하는 선박용 카고 탱크의 단면도이다.3 is a cross-sectional view of a ship cargo tank for storing liquefied gas when a rubber skirt as another embodiment of the present invention is used as a non-return device.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 스트리핑 석션 웰(Stripping suction well)10: Stripping suction well

100 : 카고 탱크 200 : 스트리핑 펌프100: cargo tank 200: stripping pump

202 : 임시 잔유 저장소 204 : 유입관202: temporary resid storage 204: inlet pipe

206 : 역지 장치 208 : 임시 잔유 저장소의 격벽206: check device 208: bulkhead of the temporary resid storage

300 : 고무 스커트 302 : 스토퍼300: rubber skirt 302: stopper

본 발명은 액화 가스를 저장하는 선박용 카고 탱크에 관한 것으로, 더욱 상 세하게는 액화 가스를 저장하는 선박에서 카고 탱크 내부의 잔유량을 최소화함으로써, 선박의 화물 회수율을 높이는 선박용 카고 탱크에 관한 것이다.The present invention relates to a ship cargo tank for storing liquefied gas, and more particularly to a ship cargo tank for improving the cargo recovery rate of the ship by minimizing the remaining amount of the cargo inside the cargo tank in the ship storing the liquefied gas.

LNG는 메탄(methane)을 주성분으로 하는 천연가스를 영하 1백 62도로 냉각해 그 부피를 6백분의 1로 줄인 무색 투명한 초저온 액체로 일반적으로 액화 천연 가스로 칭한다. 액화 천연가스(LNG)는 주로 메탄으로 구성되어 있지만 소량의 기타 액화가스도 함유하며, 비록 현재 경제적 관심이 LNG 수송에 집중되어 있지만, 액화 가스의 다량 수송과 취급에 관련된 문제는 암모니아, 에틸렌, 프로판, 부탄 및 염소와 같은 액화가스에도 동일하게 적용된다.LNG is a colorless, transparent, cryogenic liquid that cools methane-based natural gas to minus 162 degrees and reduces its volume to one-hundredth by one hundred, usually referred to as liquefied natural gas. Liquefied natural gas (LNG) consists mainly of methane, but also contains small amounts of other liquefied gases, although current economic interest is focused on LNG transport, problems related to the transport and handling of large quantities of liquefied gas are ammonia, ethylene and propane. The same applies to liquefied gases such as butane and chlorine.

이러한 LNG가 에너지 자원으로 등장함에 따라 이 가스를 에너지로 이용하기 위해서 생산 기지로부터 수요지의 인수지까지 대량으로 수송할 수 있는 효율적인 운반 방안이 검토되었으며, 그 결과물은 LNG의 해상수송을 위한 LNG 수송선으로 나타났다.As LNG emerged as an energy resource, an efficient transportation method that can transport large quantities from the production base to the destination of the demand site was considered to use this gas as energy, and the result was the LNG carrier for the maritime transportation of LNG. appear.

LNG 수송선에는 초저온 상태로 액화시킨 LNG의 보관 및 운송을 위해 LNG저장 탱크가 건조되어 있는데, 이러한 저장탱크에는 조선 기술상 완전한 누설방지, 완전한 단열 및 저온 및 수축하는 탱크의 안정 유지 등에 대해서 주의를 기울이고 있다.LNG storage tanks are built for the storage and transportation of LNG liquefied to cryogenic conditions. At these tanks, attention is paid to complete leakage prevention, complete insulation, and stability of low and shrinking tanks. .

이러한 이유로, 액화 천연 가스(LNG)를 운반하도록 고안된 선박들은 세상에서 가장 값비싼 상업적인 화물 운반 선박에 속한다. 이는 0.5 미만의 비중을 가지며, 주어진 중량의 화물에 대해 비교적 큰 체적 용량을 요하며, 장거리 항해 운반을 위해 충분히 낮은 압력과 액체 상태의 유지를 위하여 낮은 온도가 요구되기 때 문이다. For this reason, ships designed to carry liquefied natural gas (LNG) are among the most expensive commercial cargo carriers in the world. It has a specific gravity of less than 0.5, requires a relatively large volume capacity for a given weight of cargo, and requires low pressures for long distance navigational transport and low temperatures to maintain the liquid state.

도 1은 종래의 오일을 저장하는 유조선의 카고 탱크의 단면도이다. 도 1에 도시된 바와 같이, 카고 탱크(100)의 바닥면 중앙부에 스트리핑 펌프(200)가 삽입되도록 스트리핑 석션 웰(Stripping suction well)이 파여 있다.1 is a cross-sectional view of a cargo tank of a tanker for storing a conventional oil. As shown in FIG. 1, a stripping suction well is dug so that the stripping pump 200 is inserted into the center of the bottom surface of the cargo tank 100.

상기 카고 탱크(100)의 바닥면에 잔유되어 있던 오일들은 선박의 움직임에 따라 상기 스트리핑 석션 웰에 모여지게 되고, 모여진 오일을 상, 하로 이동하는 스트리핑 펌프(200)에 의해서 끌어 올려지게 된다. The oil remaining on the bottom surface of the cargo tank 100 is collected in the stripping suction well according to the movement of the ship, and is pulled up by the stripping pump 200 moving the collected oil up and down.

이러한 구조는 간단하기는 하나, LNG 나 LPG 와 같은 액화 가스를 저장하는 선박용 카고 탱크에서의 적용에는 많은 어려움이 따른다.While this structure is simple, its application in marine cargo tanks storing liquefied gases such as LNG or LPG presents many difficulties.

LNG는 대기압 보다 약간 높은 증기압 및 약 -260℉(-160℃)의 비등 온도에서 수송되어 지며, 모든 격납 시스템은 극도로 낮은 온도에 견딜 수 있는 물질로 구성되어야 하고, 주변 조건으로부터 현장 조건에 이르는 광범위한 온도 변화에 순응하고, 열 유입을 방지하고, 선박의 기본적인 선체 구조물의 냉각을 방지하는데 효과적인 온도 절연물을 가지도록 설계되어져야 하기 때문에, 상기 유조선의 경우와 같이 카고 탱크의 바닥면을 파내어 스트리핑 석션 웰을 만들어 낼 수 없기 때문이다.LNG is transported at vapor pressures slightly above atmospheric pressure and boiling temperatures of about -260 ° F (-160 ° C) and all containment systems must be constructed of materials that can withstand extremely low temperatures, from ambient conditions to field conditions. Stripping suction by digging the bottom of the cargo tank, as in the case of the tanker, because it must be designed to have a temperature insulator to adapt to a wide range of temperature changes, to prevent heat ingress, and to prevent the cooling of the basic hull structure of the ship. Because you can't make a well.

따라서, 액화 가스를 저장하는 선박용 카고 탱크에서도 상기와 같이 바닥면에 잔유된 액화 가스를 모아서 끌어 올릴 수 있는 장치가 필요하다.Therefore, there is a need for an apparatus that can collect and lift up the liquefied gas remaining on the bottom surface as described above in a marine cargo tank storing liquefied gas.

본 발명은 상기와 같은 종래기술의 단점을 극복하기 위해 안출된 것으로서, 카고 탱크의 내부에 남겨진 액화 가스의 잔유를 모아서 스트리핑 펌프를 이용하여 끌어 올릴 수 있는 액화 가스를 저장하는 선박용 카고 탱크를 제공하는 것을 기술적 과제로 삼고 있다.The present invention has been made in order to overcome the disadvantages of the prior art as described above, to provide a cargo tank for ships for storing the liquefied gas that can be pulled up using a stripping pump to collect the residual oil of the liquefied gas remaining inside the cargo tank Is a technical task.

상기와 같은 기술적 과제를 해결하기 위해 본 발명은 잔유된 액화 가스를 끌어 올리기 위한 스트리핑 펌프; 상기 스트리핑 펌프의 주위에 위치하고, 카고 탱크의 바닥에 설치된 임시 잔유 저장소; 상기 임시 잔유 저장소로 잔유를 유입시키는 유입관; 상기 유입관에 장착되어 지고, 상기 임시 잔유 저장소 안쪽으로만 유체를 흐르게 하는 역지 장치를 포함하는 것을 특징으로 하는 액화 가스를 저장하는 선박용 카고 탱크를 제공한다.The present invention to solve the above technical problem is a stripping pump for pulling up the residual liquefied gas; A temporary residual oil reservoir located around the stripping pump and installed at the bottom of the cargo tank; An inlet pipe for introducing residual oil into the temporary residual oil reservoir; It is provided with a cargo tank for storing a liquefied gas, characterized in that it is mounted to the inlet pipe, comprising a check device for flowing a fluid only into the temporary residual oil reservoir.

바람직하게는, 상기 유입관의 입구는 넓고, 출구는 좁게 하여, 유체가 쉽게 들어오지만, 쉽게 나가지는 못하도록 하는 것이 좋다.Preferably, the inlet of the inlet pipe is wide, the outlet is narrow so that the fluid is easily entering, but not easy to exit.

또한, 상기 역지 장치로는 역지 플랩이나 역지 밸브가 사용될 수 있다.In addition, a check flap or a check valve may be used as the check device.

이때, 상기 임시 잔유 저장소의 윗부분에는 안쪽으로 격벽을 추가적으로 포함하여, 유입된 잔유의 외부 유출을 막아 주도록 하는 것이 좋다.At this time, it is preferable to further include a partition wall in the upper portion of the temporary residual oil reservoir to prevent the external outflow of the introduced residual oil.

이하 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일실시예에 따른 액화 가스를 저장하는 선박용 카고 탱크의 단면도이다.2 is a cross-sectional view of a cargo tank for ships for storing liquefied gas according to an embodiment of the present invention.

도 2에서 알 수 있듯이 본 발명은 카고 탱크(100), 스트리핑 펌프(200), 임 시 잔유 저장소(202), 유입관(204), 역지 장치(206) 및 유입구의 격벽(208)을 포함하고 있다. 이하 순서대로 상세하게 설명한다.As can be seen in FIG. 2, the present invention includes a cargo tank 100, a stripping pump 200, a temporary reservoir reservoir 202, an inlet pipe 204, a check device 206 and a partition 208 of an inlet port. have. It demonstrates in detail in the following order.

상기 카고 탱크(100)의 내부 중앙에는 잔유를 끌어 올려 이송시킬 수 있는 스트리핑 펌프(200)가 장치되어 있으며, 상기 스트리핑 펌프(200)의 주위에 임시 잔유 저장소(202)가 사각형의 용기 모양으로 형성되어 있다.In the center of the cargo tank 100, a stripping pump 200 capable of pulling up and transporting the residual oil is installed, and the temporary residual oil reservoir 202 is formed in a rectangular container shape around the stripping pump 200. It is.

상기 임시 잔유 저장소(202)의 좌, 우측에는 임시 잔유 저장소(202)로 잔유를 유입시키는 유입관(204)과 격벽(208)이 형성되어 있다.The inlet pipe 204 and the partition wall 208 are formed at the left and right sides of the temporary residual oil reservoir 202 to introduce the residual oil into the temporary residual oil reservoir 202.

전체적으로 볼 때 카고 탱크(100)에 남겨진 잔유는 선박의 움직임으로 인해 임시 잔유 저장소(202)의 격벽(208)을 넘거나, 유입관(204)을 지나 상기 유입관(204)의 내부에 장치된 역지 장치(206)을 통하여 임시 잔유 저장소(202)의 내부로 유입되어 저장된다. As a whole, the residual oil remaining in the cargo tank 100 is over the bulkhead 208 of the temporary residue storage 202 due to the movement of the vessel, or is installed inside the inlet pipe 204 through the inlet pipe 204. It enters and is stored in the temporary resid storage 202 through the check device 206.

상기 임시 잔유 저장소(202)의 상부 격벽(208)은 내측 바닥 방향으로 굽어져 있기 때문에, 상기 카고 탱크(100)로부터 임시 잔유 저장소(202)로의 유입은 격벽(208)을 타고 내측으로 이동이 가능한 구조이나, 이와 반대의 경우에는 잔유의 유출이 굽어진 격벽(208)에 의해 차단되는 구조이다. Since the upper bulkhead 208 of the temporary residual storage reservoir 202 is bent in the inner bottom direction, the inflow into the temporary residual storage reservoir 202 from the cargo tank 100 can be moved inward on the partition wall 208. In the opposite case, the outflow of the residual oil is blocked by the curved partition wall 208.

또한, 상기 유입관(204)의 바깥쪽은, 즉 카고 탱크(100)와 접한 부분은 입구가 넓게 벌어져 있고, 안쪽은 좁게 되어 있으며, 또한 안쪽벽을 바닥 방향으로 굽힘으로서 상기 격벽(208) 구조와 같은 원리를 통해 잔유의 유출이 어렵도록 하였다.In addition, the outside of the inflow pipe 204, that is, the portion in contact with the cargo tank 100 is wide inlet, the inside is narrow, and the partition wall 208 structure by bending the inner wall in the bottom direction Through the same principle, it was difficult to spill residual oil.

게다가, 상기 유입관(204)의 통로에는 역지 장치(206)을 장착하여 역방향으 로의 유체의 흐름을 차단시킨다. 상기 역지 장치(206)로는 역지 플랩(Non-return flap) 혹은 역지 밸브(Non-return Valve)가 사용된다.In addition, a check device 206 is mounted in the passage of the inlet pipe 204 to block the flow of the fluid in the reverse direction. As the check apparatus 206, a non-return flap or a non-return valve is used.

그러나, 상기 실시예와 달리 별도의 임시 잔유 저장소(202)를 두지 않고, 상기 카고 탱크(100)의 중앙에 장치된 스트리핑 펌프(200)의 하단에 직접 역지 장치를 설치하여도 된다.However, unlike the above embodiment, a check device may be installed directly at the lower end of the stripping pump 200 installed in the center of the cargo tank 100 without having a separate temporary residual oil reservoir 202.

도 3은 본 발명의 또 다른 실시예인 고무 스커트(300)를 역지 장치로 사용한 경우의 단면도를 보여준다.Figure 3 shows a cross-sectional view of using a rubber skirt 300 as another check device of the present invention.

도 3에서 도시된 바와 같이, 상기 카고 탱크(100)에는 임시 잔유 저장소가 별도로 형성되어 있지 않으며, 상기 카고 탱크(100)의 중앙에 장치된 스트리핑 펌프(200)의 하단부에 고무 스커트(300)를 부착시킨 형태이다. As shown in FIG. 3, the cargo tank 100 is not provided with a temporary residual oil reservoir, and a rubber skirt 300 is attached to the lower end of the stripping pump 200 installed at the center of the cargo tank 100. It is attached form.

상기 고무 스커트(300)는 스트리핑 펌프(200)를 둘러싸고 있으며, 내측으로 오므라들면서 카고 탱크(100)에 남겨진 잔유를 상기 고무 스커트(300)의 내부로 유입시킨다. The rubber skirt 300 surrounds the stripping pump 200, and retracts the oil remaining in the cargo tank 100 into the rubber skirt 300 while retracting inward.

여기서 상기 고무 스커트(300)가 카고 탱크(100)에 접하는 부분, 즉 카고 탱크(100)의 바닥 면에는 상기 고무 스커트(300)가 외측으로 벌려지지 않도록 스토퍼(302)가 설치되는데, 상기 스토퍼(302)는 고무 스커트(300)를 둘러싸고 있는 형태이다.Here, the stopper 302 is installed at a portion of the rubber skirt 300 in contact with the cargo tank 100, that is, at the bottom surface of the cargo tank 100 so that the rubber skirt 300 does not spread outward. 302 surrounds the rubber skirt 300.

이는 상기 고무 스커트(300)의 내부로 유입된 잔유가 다시 카고 탱크(100)로 유출되는 것을 막기 위함이다.This is to prevent the residual oil introduced into the rubber skirt 300 from leaking back to the cargo tank 100.

이러한 과정으로 카고 탱크(100)에 남겨진 잔유는 스트리핑 펌프(200)의 주 위로 모아지며, 상기 스트리핑 펌프(200)에 의해 끌어 올려지게 되어서, 선박 내에 남겨진 잔유량을 최소화 시켜서 회수율을 높인다.In this process, the residual oil left in the cargo tank 100 is collected around the stripping pump 200, and is pulled up by the stripping pump 200, thereby minimizing the residual oil remaining in the ship to increase the recovery rate.

본 발명에 의하면 종래의 액화 가스를 저장하는 선박의 카고 탱크에는 절연재 등의 문제로 스트리핑 석션 웰(Stripping suction well)을 갖추기 어려워 카고 탱크에 남은 잔량을 회수하기 힘들었던 문제점을 해결하기 위하여, 역지(Non-return) 장치와 임시 잔유 저장소(Retainer)를 통해 모은 잔유를 스트리핑 펌프(Stripping Pump)를 이용하여 끌어올림으로써, 잔유량을 최소로 하여 카고의 운송 효율을 높이는 효과가 있다. According to the present invention, in order to solve the problem that it is difficult to recover the remaining amount in the cargo tank because it is difficult to equip the cargo tank of the ship that stores the conventional liquefied gas due to the problem of insulation, etc. By raising the residual oil collected through the return device and the temporary residual oil reservoir by using a stripping pump, it is effective to minimize the amount of residual oil and to improve the transportation efficiency of the cargo.

Claims (4)

잔유된 액화 가스를 끌어 올리기 위한 스트리핑 펌프(Stripping Pump);A stripping pump for drawing up the residual liquefied gas; 상기 스트리핑 펌프의 주위에 위치하고, 카고(Cargo) 탱크의 바닥에 설치된 임시 잔유 저장소(Retainer);A temporary residual oil reservoir located around the stripping pump and installed at the bottom of a cargo tank; 상기 임시 잔유 저장소로 잔유를 유입시키는 유입관; 및An inlet pipe for introducing residual oil into the temporary residual oil reservoir; And 상기 유입관에 장착되고, 상기 임시 잔유 저장소 안쪽으로만 유체를 흐르게 하는 역지(Non-return) 장치를 포함하는 것을 특징으로 하는 액화 가스를 저장하는 선박용 카고 탱크.And a non-return device mounted to said inlet pipe, said non-return device allowing fluid to flow only into said temporary residual oil reservoir. 제 1항에 있어서,The method of claim 1, 상기 유입관의 입구는 넓고, 출구는 좁게 하여, 유체가 쉽게 들어오고 쉽게 나가지는 못하도록 하는 것을 특징으로 하는 액화 가스를 저장하는 선박용 카고 탱크.A cargo tank for storing a liquefied gas, characterized in that the inlet of the inlet pipe is wide, the outlet is narrow so that the fluid is not easily enter and exit. 제 1항에 있어서,The method of claim 1, 상기 역지 장치로는 역지 플랩(Non-return Flap) 이나 역지 밸브(Non-return Valve)를 포함하는 것을 특징으로 하는 액화 가스를 저장하는 선박용 카고 탱크.The check device is a ship cargo tank for storing liquefied gas, characterized in that it comprises a non-return flap (Non-return Flap) or a non-return valve (Non-return Valve). 제 1항에 있어서,The method of claim 1, 상기 임시 잔유 저장소의 윗부분에는 안쪽으로 격벽을 추가적으로 포함하여, 유입된 잔유의 외부 유출을 막아주는 것을 특징으로 하는 액화 가스를 저장하는 선박용 카고 탱크.A cargo tank for storing a liquefied gas, characterized in that the upper portion of the temporary residual oil reservoir further includes a partition inward to prevent the outflow of the introduced residual oil.
KR1020050057240A 2005-06-29 2005-06-29 Cargo for liquefied gas tank ship KR100650606B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100972656B1 (en) * 2008-01-25 2010-07-27 삼성중공업 주식회사 The Structure of cargo tank bottom in LNGC for continuous supply of residual fuel
KR101494118B1 (en) 2011-02-07 2015-02-16 미츠비시 쥬고교 가부시키가이샤 Liquid suction device
KR20170029510A (en) * 2014-07-04 2017-03-15 가즈트랑스포르 에 떼끄니가즈 Sealed and insulating tank disposed in a floating double hull
WO2021045534A1 (en) * 2019-09-06 2021-03-11 주식회사 포스코 Liquefied gas storage tank and ship including same
WO2022131808A1 (en) * 2020-12-18 2022-06-23 주식회사 포스코 Liquefied gas storage tank and ship including same
EP4079624A4 (en) * 2019-12-18 2023-02-01 Posco Liquefied gas storage tank and ship including same

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100972656B1 (en) * 2008-01-25 2010-07-27 삼성중공업 주식회사 The Structure of cargo tank bottom in LNGC for continuous supply of residual fuel
KR101494118B1 (en) 2011-02-07 2015-02-16 미츠비시 쥬고교 가부시키가이샤 Liquid suction device
KR20170029510A (en) * 2014-07-04 2017-03-15 가즈트랑스포르 에 떼끄니가즈 Sealed and insulating tank disposed in a floating double hull
KR102391941B1 (en) * 2014-07-04 2022-04-28 가즈트랑스포르 에 떼끄니가즈 Sealed and insulating tank disposed in a floating double hull
WO2021045534A1 (en) * 2019-09-06 2021-03-11 주식회사 포스코 Liquefied gas storage tank and ship including same
CN114341543A (en) * 2019-09-06 2022-04-12 株式会社Posco Liquefied gas storage tank and ship comprising same
JP2022547021A (en) * 2019-09-06 2022-11-10 ポスコ Liquefied gas storage tanks and vessels containing them
JP7442626B2 (en) 2019-09-06 2024-03-04 ポスコホールディングス インコーポレーティッド Liquefied gas storage tanks and ships containing them
EP4079624A4 (en) * 2019-12-18 2023-02-01 Posco Liquefied gas storage tank and ship including same
WO2022131808A1 (en) * 2020-12-18 2022-06-23 주식회사 포스코 Liquefied gas storage tank and ship including same

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