KR20150120701A - The bilge handling system of LNG storage tank - Google Patents

The bilge handling system of LNG storage tank Download PDF

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KR20150120701A
KR20150120701A KR1020140046654A KR20140046654A KR20150120701A KR 20150120701 A KR20150120701 A KR 20150120701A KR 1020140046654 A KR1020140046654 A KR 1020140046654A KR 20140046654 A KR20140046654 A KR 20140046654A KR 20150120701 A KR20150120701 A KR 20150120701A
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South Korea
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bilge
well
storage tank
lng
bilge well
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KR1020140046654A
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Korean (ko)
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박래동
전후열
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현대중공업 주식회사
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Priority to KR1020140046654A priority Critical patent/KR20150120701A/en
Publication of KR20150120701A publication Critical patent/KR20150120701A/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 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/004—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating sludge, e.g. tank washing sludge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/06—Coverings, e.g. for insulating purposes
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/016—Preventing slosh

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to a bilge processing device of an LNG storage tank which can easily drain water injected into a bilge well to clean the bilge well during a bilge well suction test when constructing a ship by forming an inclined bottom surface of the bilge well, and easily discharge LNG leaked by a crack in a barrier of a storage tank and water created in an insulation area by a temperature difference and stored in the bilge well. The bilge processing device of an LNG storage tank according to the present invention is installed on a lower portion of a storage tank of an LNG transport ship to collect and discharge bilge, and comprises: a bilge well which stores bilge created in an insulation area of the LNG storage tank, and whose lower surface is inclined downwards from one side towards the other side; a bilge inflow pipe which is installed to connect the insulation area of the LNG storage tank and the bilge well to allow the bilge created in the insulation area to flow into the bilge well; and a bilge transport pipe connected to an inclined lower portion of the lower surface of the bilge well to easily discharge the bilge collected in the bilge well.

Description

LNG 저장탱크의 빌지 처리장치{The bilge handling system of LNG storage tank} [0001] The present invention relates to an LNG storage tank,

본 발명은 LNG 저장탱크의 빌지 처리장치에 관한 것으로, 빌지웰의 바닥면을 일방향으로 경사지게 형성하여 빌지웰 내부에 남겨지는 빌지의 량을 최소화하면서 빌지의 처리가 용이하게 이루어지도록 하는 LNG 저장탱크의 빌지 처리장치에 관한 것이다.
The present invention relates to a bilge treatment apparatus for an LNG storage tank, in which a bottom surface of a bilge well is inclined in one direction so as to minimize the amount of bilge remaining in the bilge well, To a bilge processing apparatus.

천연가스는, 육상 또는 해상의 가스배관을 통해 가스 상태로 운반되거나, 또는 액화천연가스(LNG; liquefied natural gas) 의 상태로 액화된 후 LNG 수송선에 저장된 채 원거리의 소비처로 운반된다. Natural gas is transported in the form of gas through land or sea gas pipelines, or liquefied in the form of liquefied natural gas (LNG), and then transported to a remote location where it is stored in an LNG carrier.

액화천연가스는 천연가스를 극저온(대략 -163℃)으로 냉각하여 얻어지는 것으로 가스 상태의 천연가스일 때보다 그 부피가 대략 1/600로 줄어들므로 해상을 통한 원거리 운반에 매우 적합하다.Liquefied natural gas is obtained by cooling natural gas at cryogenic temperatures (approximately -163 ° C), and its volume is reduced to approximately 1/600 of that of natural gas, making it well suited for long-distance transport through the sea.

LNG를 싣고 바다를 운항하여 육상 소요처에 LNG를 하역하기 위한 LNG 수송선이나, 마찬가지로 LNG를 싣고 바다를 운항하여 육상 소요처에 도착한 후 저장된 LNG를 재기화하여 천연가스 상태로 하역하는 LNGRV(Regasification Vessel)는, 액화천연가스의 극저온에 견딜 수 있는 저장탱크(흔히, '화물창'이라고 함)를 포함한다.LNG transport (LNGV) transporting LNG to the sea, transporting LNG to sea, transporting LNG to sea, transporting LNG to sea, transporting LNG to sea, transporting LNG, ) Includes a cryogenic storage tank (often referred to as a 'hold') of liquefied natural gas.

상기 저장탱크는 멤브레인형태로 이루어지며, 1,2차 방벽 및 1,2차 방벽 사이에 설치되는 단열재를 통해 인슐레이션 구역을 형성하여 단열, 기밀, 액밀이 가능하도록 구성된다.The storage tank is in the form of a membrane and is configured to be capable of insulation, airtightness, and liquid tightness by forming an insulation zone through a heat insulating material installed between the first and second barrier walls and the first and second barrier walls.

한편 이러한 저장탱크에는 저장탱크 내에서 발생하는 오염된 오수에 해당하는 빌지(Bilge)를 내부에 저장하기 위한 빌지웰(Well) 연결된다.On the other hand, a bilge well for storing the bilge corresponding to contaminated wastewater generated in the storage tank is connected to the storage tank.

보다 상세히 설명하면 방벽의 균열이 발생할 경우 화물인 LNG가 인슐레이션 구역으로 침투하게 되어 빌지웰로 고여지거나, 온도차이에 의해 인슐레이션 구역의 내부에 발생되는 물이 빌지웰로 이동하게 된다.In more detail, when cracks occur in the barrier, LNG as a cargo penetrates into the insulation zone, and the water generated in the insulation zone moves to the bilge well due to the temperature difference.

그러나 종래의 빌지웰은 하부면이 평평한 형태로 구성되어 빌지웰 내부의 빌지가 완전히 배수되지 못하는 문제점이 있다.However, the conventional bilge well has a problem that the lower surface of the bilge well is flat and the bilge inside the bilge well can not be completely drained.

또한 선박 건조 중 테스트 항목으로 빌지웰의 워터 석션 검사를 수행하기 위해 빌지웰의 청소를 실시하게 되는데 이 과정에서 빌지웰 내부로 이물질과 슬래그가 유입되어 파이프가 막히게 되고, 청소하기 위해 사용된 물이 완전히 배수되지 않고 빌지웰 내부에 남게 되는 문제점이 있다.
In addition, as a test item during the ship construction, cleaning of the bilge well is performed to perform the water suction inspection of the bilge well. In this process, foreign substances and slag are introduced into the bilge well and the pipe is clogged and the water used for cleaning There is a problem that it is not completely drained and remains inside the bilge well.

공개특허공보 10-2014-0004355Patent Document 10-2014-0004355 공개특허공보 10-2012-0036019Patent Document 1: JP-A-10-0036019

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, 빌지웰의 바닥면을 경사지게 형성하여, 선박 건조시 빌지웰 석션 검사 수행중 빌지웰의 청소를 위해 주입되는 물의 배수가 원활하게 이루어지도록 함과 동시에, 저장탱크의 방벽 균열에 의해 누출되는 LNG 및 온도차에 의해 인슐레이션 구역에 발생되는 물의 빌지웰이 저장될 경우 원활하게 배출될 수 있도록 하는 LNG 저장탱크의 빌지 처리장치를 제공함에 있다.
SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a method and apparatus for forming a bottom of a bilge well by sloping the bottom of a bilge well, The present invention also provides a bilge disposal apparatus for an LNG storage tank that can be smoothly discharged when the bilge well of water generated in the insulation zone is stored by the LNG leaked by the barrier crack of the storage tank and the temperature difference.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은, LNG운반선의 LNG 저장탱크의 하부에 설치되고 빌지를 모아 배출될 수 있도록 하는 빌지 처리장치에 있어서, LNG 저장탱크의 인슐레이션 구역에서 발생되는 빌지를 저장해주되 저장되는 빌지가 모여질 수 있도록 하부면이 일측에서 타측을 향해 하향 경사지게 형성되는 빌지웰; 상기 LNG 저장탱크의 인슐레이션 구역과 상기 빌지웰을 연결하도록 설치되어 인슐레이션 구역에서 발생되는 빌지가 빌지웰로 유입될 수 있도록 설치되는 빌지 유입파이프; 상기 빌지웰 하부면의 경사진 하부에 연결되어 빌지웰 내부에 모여지는 빌지를 용이하게 배출할 수 있도록 하는 빌지 이송파이프; 를 포함하여 구성된 것을 특징으로 한다
According to an aspect of the present invention, there is provided a bilge disposal apparatus installed at a lower portion of an LNG storage tank of an LNG carrier, A bilge well in which a lower surface is formed so as to be inclined downward from one side to the other side so as to collect bilge generated in an insulation zone of the tank and to collect stored bilge; A bilge inflow pipe installed to connect the insulation zone of the LNG storage tank and the bilge well to allow the bilge generated in the insulation zone to flow into the bilge well; A bilge conveying pipe connected to an inclined lower portion of the lower surface of the bilge well to allow the bilge collected in the bilge well to be easily discharged; And a control unit

이상에서 설명한 바와 같이 본 발명에 의하면, 빌지웰 하부면을 경사지게 형성하고, 경사진 바닥면의 하측에 빌지 이송파이프를 연결해놓음으로써, 빌지웰 내부에 잔류되는 물의 잔류량을 최소화할 수 있게 되는 효과가 있다.As described above, according to the present invention, since the lower surface of the bilge well is inclined and the bilge conveying pipe is connected to the lower side of the inclined bottom surface, the residual amount of water remaining in the bilge well can be minimized have.

또한 빌지의 배출이 빠르고 용이하게 이루어지도록 함과 동시에, 선박의 건조시에 빌지웰의 워터 석션 검사를 수행하는 과정에서 빌지웰 내부청소시에 유입되는 물이 빌지웰 내부에 남겨지지 않고 모두 배출할 수 있게 되는 효과가 있는 매우 유용한 발명이다.
In addition, in the process of inspecting the water suction of the bill well at the time of drying the vessel, the water which is introduced at the time of cleaning the inside of the bill well is discharged to the inside of the bill well, It is a very useful invention that has the effect of being able to.

도 1 은 LNG운반선에서 LNG 저장탱크에 연결되도록 설치되는 빌지 처리장치를 나타낸 예시도,
도 2 는 본 발명에 의한 빌지 처리장치를 상세히 나타낸 예시도. FIG. 1 is a view showing an example of a bilge treatment apparatus installed to be connected to an LNG storage tank in an LNG carrier,
2 is an exemplary view showing the bilge disposal apparatus according to the present invention in detail.

이하 본 발명의 실시 예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다. 또한 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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, a 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 1 은 LNG운반선에서 LNG 저장탱크에 연결되도록 설치되는 빌지 처리장치를 나타낸 예시도, 도 2 는 본 발명에 의한 빌지 처리장치를 상세히 나타낸 예시도로서, FIG. 1 is a view showing an example of a bilge treatment apparatus installed to be connected to an LNG storage tank in an LNG carrier, FIG. 2 is an exemplary view showing a bilge treatment apparatus according to the present invention in detail,

본 발명에 의한 빌지 처리장치는, 빌지웰(200)과, 빌지 유입파이프(300), 빌지 이송파이프(400)를 포함하여 구성된다.The bilge treatment apparatus according to the present invention includes a bilge well 200, a bilge inflow pipe 300, and a bilge transfer pipe 400.

우선, 본 발명은 멤브레인형 LNG 저장탱크가 사용되는 액화천연가스 운반선에 적용될 수 있다.First, the present invention can be applied to a liquefied natural gas carrier in which a membrane type LNG storage tank is used.

멤브레인형태의 LNG 저장탱크(100)는 1차 단열재(111), 1차 방벽(112), 2차 단열재(113) 및 2차 방벽(114)이 순차적으로 적층되어 형성되는 인슐레이션 공간부(110)에 감싸여져 형성된다.The membrane type LNG storage tank 100 includes an insulation space part 110 formed by sequentially laminating a primary insulation material 111, a primary barrier 112, a secondary insulation material 113 and a secondary barrier 114, As shown in FIG.

상기 빌지웰(200)은 LNG 저장탱크(100) 하부 일측으로 설치되어, 인슐레이션 공간부(100)에서 발생되는 빌지를 저장하게 되며, 이때 인슐레이션 공간부(100)에서 발생되는 빌지는 빌지 유입파이프(300)를 통해 빌지웰(200)로 유입된다.The bilge well 200 is installed on one side of the lower portion of the LNG storage tank 100 to store the bilge generated in the insulation space portion 100. The bilge generated in the insulation space portion 100 may be a bilge inflow pipe 300 to the bilge well 200. [

상기 빌지웰(200)로 모여지는 빌지는 LNG 저장탱크(100) 내부의 온도와 인슐레이션 공간부(110)의 온도차에 의해 발생되는 결로나, 방벽의 균열에 의해 누출되는 LNG가 있더,The bilge collected in the bilge well 200 may have an LNG leaked due to condensation caused by the temperature inside the LNG storage tank 100 and the temperature difference of the insulation space 110 or cracks in the barrier,

상기 결로는 빌지 유입파이프(300)를 통해 빌지웰(200)로 모여지고, 방벽의 균열이 발생할 경우에 누출되는 LNG는 인슐레이션 공간부(110)로 침투하게 되어 빌지웰(200)로 고여지며, 온도차이에 의해 인슐레이션 구역의 내부에 발생되는 물이 빌지웰(200)로 이동하게 된다.
The condensation is collected into the bellows well 200 through the bilge inflow pipe 300. When cracks of the barrier occur, the leaking LNG penetrates into the insulation space part 110 and is accumulated in the bellows well 200, The temperature difference causes the water generated inside the insulation zone to move to the bilge well 200.

한편 빌지웰(200)은 통상 육면체 형태로 구성되는 것으로, 맨홀(211)이 형성되어 있는 상부면(210), 상기 상부면(210)의 가장자리를 따라 형성되는 측면(220), 상기 측면(220)의 하부에 형성되어 밀폐가 이루어지도록 하는 하부면(230)으로 구성되되, 내부에 저장되는 빌지가 한 곳으로 용이하게 모여질 수 있도록 하부면(230)이 일측에서 타측을 향해 하향 경사지게 형성된다.The bilge well 200 is generally formed in a hexahedron shape and includes an upper surface 210 on which a manhole 211 is formed, a side surface 220 formed along the edge of the upper surface 210, The lower surface 230 is formed so as to be inclined downward from one side to the other side so that bilge stored in the lower surface 230 can be easily gathered. .

이와 같이 구성되는 빌지웰(200)은 하부면(230)이 경사지게 형성됨으로써 빌지웰(200) 내부로 유입되는 빌지가 하부(230)면의 경사진 형태에 따라 한 곳으로 모이게 되고 빌지 이송파이프(400)를 통해 보다 용이하게 배출할 수 있게 된다.The lower surface 230 of the bilge well 200 thus formed is inclined so that the bilge introduced into the bilge well 200 is gathered into one place according to the inclined shape of the lower surface 230, 400 to be more easily discharged.

또한 상기 빌지웰(200)에는 누출되는 LNG에 의해 폭발의 위험을 없애주기 위하여 빌지웰(200) 내부로 질소가스를 공급하는 질소가스 공급관(500)이 더 설치된다.The bilge well 200 is further provided with a nitrogen gas supply pipe 500 for supplying nitrogen gas into the bilge well 200 in order to eliminate the risk of explosion by the LNG leaking.

한편 빌지 이송파이프(400)는 상기 빌지웰(200) 하부면(230)의 경사진 하부에 연결되어 빌지웰(200) 내부에 모여지는 빌지가 배출될 수 있도록 한다.
Meanwhile, the bilge conveying pipe 400 is connected to the inclined lower portion of the lower surface 230 of the bilge well 200 to allow the bilge collected in the bilge well 200 to be discharged.

본 발명은 상기와 같이 빌지웰(200) 하부면(230)을 경사지게 형성하고, 경사진 하부면(230)의 하측에 빌지 이송파이프(400)를 연결해놓음으로써, 빌지웰(200) 내부에 모여지는 빌지의 배출이 빠르고 용이하게 이루어지도록 함과 동시에, 선박의 건조시에 빌지웰(200)의 워터 석션 검사를 수행하는 과정에서 빌지웰(200) 내부청소시에 유입되는 물이 빌지웰(200) 내부에 남겨지지 않고 모두 배출할 수 있게 된다.
The lower surface 230 of the bilge well 200 is inclined and the bilge conveying pipe 400 is connected to the lower side of the inclined lower surface 230 so as to be gathered in the bilge well 200 The water introduced into the bilge well 200 at the time of cleaning the inside of the bilge well 200 in the course of performing the water suction inspection of the bilge well 200 at the time of drying the ship is discharged to the bilge well 200 Quot;) without being left inside.

이와 같이 구성되는 본 발명의 빌지 처리장치를 이용하여 누출되거나 생성되는 빌지를 처리하는 과정을 설명하면, Hereinafter, a process of processing a leaking or generated bilge using the bilge disposal apparatus of the present invention will be described.

빌지웰(200)로 LNG 저장탱크(100) 내부의 온도와 인슐레이션 공간부(110)의 온도차이에 의해 인슐레이션 공간부(110) 내부에 결로가 발생할 경우, 결로는 빌지 유입파이프(300)를 통해 빌지웰(200) 내부로 유입된다.When dew condensation occurs in the insulation space part 110 due to the temperature difference between the LNG storage tank 100 and the insulation space part 110 due to the bilge well 200, And then flows into the bilge well 200.

이때 빌지웰(200)로 유입된 결로는 빌지웰(200)의 경사진 하부면(230)에 의해 하부방향으로 모여지게 되고, 경사진 하부면(230)에 연결된 빌지 이송파이프(400)를 통해 빌지웰(400) 외부로 배출된다.At this time, the condensation introduced into the bilge well 200 is gathered downwardly by the inclined lower surface 230 of the bilge well 200 and the bilge conveyance pipe 400 connected to the inclined lower surface 230 And is discharged outside the bilge well 400.

상기와 같이 빌지웰(400) 내부의 수분 배출이 용이하게 이루어지게 됨으로써 빌지웰 (400)내부의 수분이 빌지 유입파이프(300)를 통해 인슐레이션 공간부(110) 내부로 침투되는 것을 최소화할 수 있게 된다.
As described above, since the water in the bilge well 400 can be easily discharged, the moisture inside the bilge well 400 can be minimally penetrated into the insulation space 110 through the bilge inlet pipe 300 do.

이와 같이 구성되는 본 발명은 빌지웰(200) 내부에 모여지는 빌지의 배출이 빠르고 용이하게 이루어지도록 함과 동시에, 빌지웰(200) 내부에 잔류하는 물의 량이 최소화되도록 함으로써 인슐레이션 공간부(110) 내부로 침투되는 물의 량을 줄여줄 수 있게 된다.
According to the present invention configured as described above, it is possible to quickly and easily discharge the bilge accumulated in the bilge well 200 and to minimize the amount of water remaining in the bilge well 200, Thereby reducing the amount of water infiltrated into the water.

또한 선박의 건조시에 빌지웰의 워터 석션 검사를 수행하는 과정에서 빌지웰(200) 내부청소시에 유입되는 물이 빌지웰(200) 내부에 남겨지지 않고 모두 배출할 수 있게 되는 것이다.
In addition, in the process of inspecting the water suction of the bill well at the time of drying the vessel, the water introduced at the time of cleaning the interior of the bill well 200 can be discharged without being left inside the bill well 200.

본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(100) : LNG저장탱크 (110) : 인슐레이션 공간부
(111) : 1차 단열재 (112) : 1차 방벽
(113) : 2차 단열재 (114) : 2차 방벽
(200) : 빌지웰 (210) : 상부면
(211) : 맨홀 (220) : 측면
(230) : 하부면 (300) : 빌지 유입파이프
(400) : 빌지 이송파이프 (500) : 질소가스 공급관(100): LNG storage tank (110): Insulation space part
(111): primary insulation 112: primary barrier
(113): secondary insulation (114): secondary barrier
(200): bilge well (210): upper surface
(211): manhole (220): side
(230): lower surface (300): bilge inflow pipe
(400): Bilge transfer pipe (500): Nitrogen gas supply pipe

Claims (1)

LNG운반선의 LNG 저장탱크의 하부에 설치되고 빌지를 모아 배출될 수 있도록 하는 빌지 처리장치에 있어서,
LNG 저장탱크의 인슐레이션 구역에서 발생되는 빌지를 저장해주되 저장되는 빌지가 모여질 수 있도록 하부면이 일측에서 타측을 향해 하향 경사지게 형성되는 빌지웰;
상기 LNG 저장탱크의 인슐레이션 구역과 상기 빌지웰을 연결하도록 설치되어 인슐레이션 구역에서 발생되는 빌지가 빌지웰로 유입될 수 있도록 설치되는 빌지 유입파이프;
상기 빌지웰 하부면의 경사진 하부에 연결되어 빌지웰 내부에 모여지는 빌지를 용이하게 배출할 수 있도록 하는 빌지 이송파이프; 를 포함하여 구성된 것을 특징으로 하는 LNG 저장탱크의 빌지 처리장치.
A bilge disposal apparatus installed at a lower portion of an LNG storage tank of an LNG carrier and collecting and discharging bilge,
A bilge well for storing bilge generated in the insulation zone of the LNG storage tank, wherein the lower surface is formed to be inclined downward from one side to the other side so that the stored bilge can be collected;
A bilge inflow pipe installed to connect the insulation zone of the LNG storage tank and the bilge well to allow the bilge generated in the insulation zone to flow into the bilge well;
A bilge conveying pipe connected to an inclined lower portion of the lower surface of the bilge well to allow the bilge collected in the bilge well to be easily discharged; And a controller for controlling the operation of the LNG storage tank.
KR1020140046654A 2014-04-18 2014-04-18 The bilge handling system of LNG storage tank KR20150120701A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018220331A1 (en) 2017-06-01 2018-12-06 Gaztransport Et Technigaz Sealed and thermally insulating tank
KR20220027692A (en) * 2020-08-27 2022-03-08 현대중공업 주식회사 liquefied gas tank and ship having the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018220331A1 (en) 2017-06-01 2018-12-06 Gaztransport Et Technigaz Sealed and thermally insulating tank
CN110785603A (en) * 2017-06-01 2020-02-11 气体运输技术公司 Sealed heat insulation tank
RU2755830C2 (en) * 2017-06-01 2021-09-22 Газтранспорт Эт Технигаз Sealed and heat-insulated tank
CN110785603B (en) * 2017-06-01 2022-06-07 气体运输技术公司 Sealed heat insulation tank
KR20220027692A (en) * 2020-08-27 2022-03-08 현대중공업 주식회사 liquefied gas tank and ship having the same

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