WO2021225401A1 - Lng iso tank provided with double vacuum apparatus - Google Patents

Lng iso tank provided with double vacuum apparatus Download PDF

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Publication number
WO2021225401A1
WO2021225401A1 PCT/KR2021/005726 KR2021005726W WO2021225401A1 WO 2021225401 A1 WO2021225401 A1 WO 2021225401A1 KR 2021005726 W KR2021005726 W KR 2021005726W WO 2021225401 A1 WO2021225401 A1 WO 2021225401A1
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Prior art keywords
tank
lng
iso
double vacuum
external
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PCT/KR2021/005726
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French (fr)
Korean (ko)
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강영진
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주식회사 에이원글로벌네트웍스코리아
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Publication of WO2021225401A1 publication Critical patent/WO2021225401A1/en

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    • 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
    • F17C13/10—Arrangements for preventing freezing
    • 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
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2205/0352—Pipes
    • F17C2205/0355—Insulation thereof
    • 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

Definitions

  • the present invention relates to an LNG ISO tank including a double vacuum device for a piping line, and to maintain a high vacuum state between an inner tank and an outer tank of the LNG ISO tank, to prevent leakage that occurs when connecting and removing an external connector It relates to an LNG ISO tank comprising a double vacuum device for
  • Natural gas is widely consumed as an economical and eco-friendly energy. However, the cost and efficiency are lowered due to the volume to be transported in the natural gas state.
  • LNG liquefied natural gas
  • the ISO tank is composed of an outer tank in a vacuum state to block external heat intrusion, an insulating material surrounding the inner tank, and a low-temperature inner tank in which LNG in a cryogenic state is stored.
  • the space between the insulating material wound around the outside of the inner tank and the outer tank is maintained in a high vacuum state.
  • the LNG ISO tank is provided with an injection piping line for injecting LNG into the internal tank, and a discharge piping line for discharging the LNG stored in the internal tank to a consumer.
  • LNG is injected and discharged
  • moisture is inevitably introduced into the injection and discharge piping lines, and this moisture is frozen by the low temperature of the LNG when the LNG is injected, and starts to melt when the LNG is discharged to the internal tank.
  • an object of the present invention is to solve the problem of moisture leakage in a vacuum space by applying a double vacuum device to an injection piping line and an exhaust piping line of an LNG ISO tank to solve the above-mentioned problems.
  • an external tank, an internal tank, a plurality of injection piping lines, a plurality of discharge piping lines, and LNG equipped with a double vacuum device including a double vacuum device ISO tanks are provided.
  • a vacuum may be maintained between the outer tank and the inner tank.
  • the space between the external tank and the double vacuum device may be maintained in a vacuum state.
  • the LNG ISO tank equipped with the double vacuum device according to the present invention can effectively prevent moisture from freezing in the injection piping line and the discharge piping line connected between the internal tank and the external tank of the LNG ISO tank.
  • FIG. 1 is a front view schematically showing the front of an LNG ISO tank equipped with a double vacuum device for a piping line according to an embodiment of the present invention.
  • FIG. 2 is a right side view schematically showing the right side of an LNG ISO tank equipped with a double vacuum device for a piping line according to an embodiment of the present invention.
  • the LNG ISO tank includes an inner tank 10 in which LNG is directly stored, and an insulating material (reference numeral) for enclosing the inner tank 10 and maintaining the cryogenic temperature of the LNG stored in the inner tank 10 . not provided) and an external tank (not shown) provided in the form of enclosing the inner tank 10 at a predetermined interval from the inner tank 10 .
  • the space between the inner tank 10 and the outer tank is maintained in a vacuum state, and the space between the inner tank 10 and the outer tank will be referred to as a vacuum unit (not shown).
  • the inner tank 10 and the vacuum unit are provided inside the outer tank, the LNG is stored in the inner tank 10, and the inner tank 10 is fixedly installed in the outer tank.
  • the LNG ISO tank according to the present embodiment is provided with a plurality of outlets to which a piping line for injecting or discharging LNG is connected.
  • a plurality of outlets, a plurality of internal outlets (N1, N2, N4) formed in the inner tank 10, and a plurality of inner outlets (N1, N2, N4) are formed in the outer tank to correspond to each other. It includes a plurality of external outlets (not shown).
  • the external outlet is connected to and disconnected from the external connector at an LNG supply source that injects LNG into the inner tank 10 and an LNG demand source that receives LNG from the inner tank 10 .
  • a plurality of piping lines 11 connecting a plurality of internal discharge ports N1 , N2 , N4 formed in the inner tank 10 and one or more external discharge ports formed in the outer tank are included. That is, the plurality of pipe lines 11 are provided in the vacuum unit.
  • injection and discharge of liquefied natural gas are repeatedly carried out through a plurality of outlets and a pipe line 11 .
  • the temperature of the liquefied natural gas injected into the internal tank 10 is an ultra-low temperature of about -168° C.
  • the moisture introduced while performing the process of injecting and discharging the liquefied natural gas is frozen on the surface of the piping line 11 by the cryogenic temperature of the liquefied natural gas.
  • a double vacuum device 15 is provided to surround the pipe line 11 on the outside of the inner tank 10 . .
  • the inside of the double vacuum device 15 according to the present embodiment is maintained in a vacuum state.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to a double vacuum apparatus for a piping line of an LNG ISO tank and, more specifically, to a double vacuum apparatus for preventing moisture freezing in injection and discharge piping lines between an LNG ISO internal tank and an external tank. The double vacuum apparatus for the LNG ISO tank piping line according to the present invention comprises an external tank, an internal tank, and a plurality of injection and discharge piping lines. It is preferable that a vacuum state is maintained between the external tank and the internal tank. Also, it is preferable that a space between the external tank and the double vacuum apparatus is maintained in a vacuum state. According to the present invention, the double vacuum apparatus for the LNG ISO tank piping line can effectively prevent moisture freezing in the injection and discharge lines connected between the internal tank and the external tank. Also, according to the present invention, the freezing between the internal tank and the external tank is prevented, and there is an effect of efficiently maintaining the vacuum state.

Description

이중 진공장치가 구비된 LNG ISO 탱크LNG ISO tank with double vacuum
본 발명은 배관라인의 이중 진공장치를 포함하는 LNG ISO 탱크에 관한 것으로, LNG ISO 탱크의 내부탱크과 외부탱크 사이에 고진공 상태를 유지하기 위해, 외부 커넥터를 연결 및 제거할 때 발생하는 누설을 방지하기 위한 이중 진공장치를 포함하는 LNG ISO 탱크에 관한 것이다. The present invention relates to an LNG ISO tank including a double vacuum device for a piping line, and to maintain a high vacuum state between an inner tank and an outer tank of the LNG ISO tank, to prevent leakage that occurs when connecting and removing an external connector It relates to an LNG ISO tank comprising a double vacuum device for
천연가스는 경제성이 있고 친환경적인 에너지로 많이 소비되고 있다. 그러나 천연가스 상태로 이송하기에는 부피로 인하여 비용 및 효율이 떨어지게 된다. Natural gas is widely consumed as an economical and eco-friendly energy. However, the cost and efficiency are lowered due to the volume to be transported in the natural gas state.
이러한 점을 보완하기 위해 액화천연가스(Liquefied Natural Gas, LNG) 상태로 운송하는 방법이 널리 이용되고 있다. In order to supplement this point, a method of transporting in the state of liquefied natural gas (LNG) is widely used.
LNG는 ISO(International Standardization Organization) 규격에 맞게 제작된 컨테이너 탱크인 ISO 탱크에 저장하여 운송하게 된다. LNG is stored and transported in ISO tanks, which are container tanks manufactured according to ISO (International Standardization Organization) standards.
ISO 탱크는, 외부의 열침입을 차단하기 위해 진공상태의 외부탱크와, 내부탱크를 감싸고 있는 단열재와, 초저온 상태의 LNG가 저장되는 저온의 내부탱크로 구성되어 있다. The ISO tank is composed of an outer tank in a vacuum state to block external heat intrusion, an insulating material surrounding the inner tank, and a low-temperature inner tank in which LNG in a cryogenic state is stored.
ISO 탱크를 이용한 LNG의 지상 및 해상 운송에는 상당한 시일이 소요되는데, 내부탱크에 저장된 LNG를 외부 대기열로부터 효과적으로 단열하지 못하면, LNG가 기화되어 내용물이 손실된다. Land and sea transportation of LNG using ISO tanks takes a considerable amount of time. If the LNG stored in the inner tank is not effectively insulated from the external queue, the LNG will vaporize and the contents will be lost.
이때, 효과적으로 ISO 탱크를 단열하기 위하여, 내부탱크의 외부를 감고있는 단열재와, 외부탱크 사이 공간을 고진공 상태로 유지한다. At this time, in order to effectively insulate the ISO tank, the space between the insulating material wound around the outside of the inner tank and the outer tank is maintained in a high vacuum state.
LNG ISO 탱크에는 LNG를 내부탱크에 주입하기 위한 주입 배관라인과, 내부탱크에 저장된 LNG를 수요처로 배출시키기 위한 배출 배관라인이 구비된다. LNG를 주입 및 배출시킬 때 주입 배관라인 및 배출 배관라인에 불가피하게 습기가 유입되게 되고, 이 습기는 LNG를 주입할 때 LNG의 저온에 의해 동결되었다가, LNG를 배출시킬 때 녹기 시작하여 내부탱크와 외부탱크 사이 공간으로 누설되어 진공유지를 방해하는 문제점이 있다. The LNG ISO tank is provided with an injection piping line for injecting LNG into the internal tank, and a discharge piping line for discharging the LNG stored in the internal tank to a consumer. When LNG is injected and discharged, moisture is inevitably introduced into the injection and discharge piping lines, and this moisture is frozen by the low temperature of the LNG when the LNG is injected, and starts to melt when the LNG is discharged to the internal tank. There is a problem in that it leaks into the space between the and the external tank, preventing vacuum maintenance.
따라서, 본 발명은 상술한 문제점을 해결하기 위한 것으로서, LNG ISO 탱크의 주입 배관라인 및 배출 배관라인에 이중 진공장치를 적용하여, 진공 공간에 습기가 누설되는 문제를 해결하고자 하는 것을 목적으로 한다. Accordingly, an object of the present invention is to solve the problem of moisture leakage in a vacuum space by applying a double vacuum device to an injection piping line and an exhaust piping line of an LNG ISO tank to solve the above-mentioned problems.
상술한 목적을 달성하기 위한 본 발명의 일 측면에 의하면, 외부탱크와, 내부탱크와, 복수의 주입 배관라인과, 복수의 배출 배관라인과, 이중 진공장치를 포함하는 이중 진공장치가 구비된 LNG ISO 탱크가 제공된다. According to one aspect of the present invention for achieving the above object, an external tank, an internal tank, a plurality of injection piping lines, a plurality of discharge piping lines, and LNG equipped with a double vacuum device including a double vacuum device ISO tanks are provided.
바람직하게는, 상기 외부탱크와 내부탱크 사이는 진공상태로 유지될 수 있다. Preferably, a vacuum may be maintained between the outer tank and the inner tank.
바람직하게는, 상기 외부탱크와 이중 진공장치 사이의 공간은 진공상태로 유지될 수 있다. Preferably, the space between the external tank and the double vacuum device may be maintained in a vacuum state.
본 발명에 따른 이중 진공장치가 구비된 LNG ISO 탱크는, LNG ISO 탱크의 내부탱크와 외부탱크 사이에 연결된 주입 배관라인 및 배출 배관라인에 습기가 동결되는 현상을 효과적으로 방지할 수 있다.The LNG ISO tank equipped with the double vacuum device according to the present invention can effectively prevent moisture from freezing in the injection piping line and the discharge piping line connected between the internal tank and the external tank of the LNG ISO tank.
또한, 내부탱크와 외부탱크 사이에 습기 동결현상을 방지함으로써, 진공상태를 효과적으로 유지시킬 수 있다. In addition, by preventing moisture freezing between the inner tank and the outer tank, it is possible to effectively maintain a vacuum state.
도 1은 본 발명의 일 실시예에 따른 배관라인 이중 진공장치가 구비된 LNG ISO 탱크의 정면을 간략하게 도시한 정면도이다. 1 is a front view schematically showing the front of an LNG ISO tank equipped with a double vacuum device for a piping line according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 배관라인 이중 진공장치가 구비된 LNG ISO 탱크의 우측면을 간략하게 도시한 우측면도이다. 2 is a right side view schematically showing the right side of an LNG ISO tank equipped with a double vacuum device for a piping line according to an embodiment of the present invention.
본 발명의 동작상 이점 및 본 발명의 실시에 의하여 달성되는 목적을 충분히 이해하기 위해서는 본 발명의 바람직한 실시예를 예시하는 첨부도면 및 첨부도면에 기재된 내용을 참조하여야 한다.In order to fully understand the operational advantages of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.
이하 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대해 구성 및 작용을 상세히 설명하면 다음과 같다. 여기서 각 도면의 구성요소들에 대해 참조 부호를 부가함에 있어 동일한 구성요소들에 한해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호로 표기되었음에 유의하여야 한다.Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Here, in adding reference signs to the elements of each drawing, it should be noted that only the same elements are indicated by the same reference signs as possible even if they are indicated on different drawings.
이하, 도 1 내지 도 2를 참조하여, 본 발명의 일 실시예에 따른 이중 진공장치가 구비된 LNG ISO 탱크를 설명하기로 한다. Hereinafter, an LNG ISO tank equipped with a double vacuum device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 2 .
본 발명의 일 실시예에 따른 LNG ISO 탱크는, LNG가 직접 저장되는 내부탱크(10)와, 내부탱크(10)를 감싸며 내부탱크(10)에 저장된 LNG의 극저온을 유지하기 위한 단열재(도면부호 미부여)와, 내부탱크(10)와 일정 간격을 두고 내부탱크(10)을 둘러싸는 형태로 구비되는 외부탱크(미도시)를 포함한다. The LNG ISO tank according to an embodiment of the present invention includes an inner tank 10 in which LNG is directly stored, and an insulating material (reference numeral) for enclosing the inner tank 10 and maintaining the cryogenic temperature of the LNG stored in the inner tank 10 . not provided) and an external tank (not shown) provided in the form of enclosing the inner tank 10 at a predetermined interval from the inner tank 10 .
내부탱크(10)와 외부탱크 사이 공간은 진공상태로 유지되며 이하 내부탱크(10)와 외부탱크 사이 공간을 진공부(미도시)라 하기로 한다. The space between the inner tank 10 and the outer tank is maintained in a vacuum state, and the space between the inner tank 10 and the outer tank will be referred to as a vacuum unit (not shown).
즉, 외부탱크 내부에 내부탱크(10)와 진공부가 구비되고, 내부탱크(10)에 LNG가 저장되며, 내부탱크(10)는 외부탱크 안에 고정설치된다. That is, the inner tank 10 and the vacuum unit are provided inside the outer tank, the LNG is stored in the inner tank 10, and the inner tank 10 is fixedly installed in the outer tank.
또한, 본 실시예에 따른 LNG ISO 탱크에는, LNG를 주입하거나 배출하기 위한 배관라인이 연결되는 다수개의 배출구가 구비된다. In addition, the LNG ISO tank according to the present embodiment is provided with a plurality of outlets to which a piping line for injecting or discharging LNG is connected.
본 실시예에서 다수개의 배출구는, 내부탱크(10)에 형성되는 다수개의 내부 배출구(N1, N2, N4)와, 다수개의 내부 배출구(N1, N2, N4)와 각각 대응되도록 외부탱크에 형성되는 다수개의 외부 배출구(미도시)를 포함한다.In this embodiment, a plurality of outlets, a plurality of internal outlets (N1, N2, N4) formed in the inner tank 10, and a plurality of inner outlets (N1, N2, N4) are formed in the outer tank to correspond to each other. It includes a plurality of external outlets (not shown).
외부 배출구는 LNG를 내부탱크(10)로 주입해주는 LNG 공급처 및 내부탱크(10)로부터 LNG를 공급받는 LNG 수요처에서, 외부 커넥터와 연결 및 해제된다. The external outlet is connected to and disconnected from the external connector at an LNG supply source that injects LNG into the inner tank 10 and an LNG demand source that receives LNG from the inner tank 10 .
또한, 내부탱크(10)에 형성되어 있는 다수개의 내부 배출구(N1, N2, N4)와 외부탱크에 형성되어 있는 하나 이상의 외부 배출구를 연결하는 다수개의 배관라인(11)을 포함한다. 즉, 다수개의 배관라인(11)은 진공부에 구비된다. In addition, a plurality of piping lines 11 connecting a plurality of internal discharge ports N1 , N2 , N4 formed in the inner tank 10 and one or more external discharge ports formed in the outer tank are included. That is, the plurality of pipe lines 11 are provided in the vacuum unit.
LNG를 저장한다는 본래의 목적에 의해, 본 실시예의 LNG ISO 탱크에는, 다수개의 배출구 및 배관라인(11)을 통해 액화천연가스의 주입과 배출이 반복 실시된다. For the original purpose of storing LNG, in the LNG ISO tank of this embodiment, injection and discharge of liquefied natural gas are repeatedly carried out through a plurality of outlets and a pipe line 11 .
내부탱크(10)로 주입되는 액화천연가스의 온도는 약 -168℃의 초저온이므로, 액화천연가스가 내부탱크(10)로 주입될 때, 액화천연가스의 주입 및 배출 공정을 실시하면서 유입된 습기가 액화천연가스의 초저온에 의해 배관라인(11) 표면에 동결된다. Since the temperature of the liquefied natural gas injected into the internal tank 10 is an ultra-low temperature of about -168° C., when the liquefied natural gas is injected into the internal tank 10, the moisture introduced while performing the process of injecting and discharging the liquefied natural gas is frozen on the surface of the piping line 11 by the cryogenic temperature of the liquefied natural gas.
한편, 내부탱크(10)로부터 액화천연가스가 배출될 때에는, 동결되어 있던 습기가 녹게되는데, LNG를 내부탱크(10)로 주입해주는 LNG 공급처 및 내부탱크(10)로부터 LNG를 공급받는 LNG 수요처에서 외부 커넥터가 연결 및 제거할 때, 이 습기가 외부탱크로 누설된다. On the other hand, when liquefied natural gas is discharged from the inner tank 10 , the frozen moisture is melted. When the external connector is connected and disconnected, this moisture leaks into the external tank.
시간이 지남에 따라 액화천연가스의 주입 및 배출 공정이 반복되면서 결국 외부탱크의 내부, 즉 진공부에 물이 차게되며, 진공을 유지할 수 없게된다. As the process of injecting and discharging liquefied natural gas is repeated over time, water is eventually filled in the inside of the external tank, that is, the vacuum part, and the vacuum cannot be maintained.
본 실시예에 따르면, 이러한 현상을 방지하기 위하여, 도 1 및 도 2에 도시된 바와 같이, 내부탱크(10)의 바깥측에 배관라인(11)을 감싸도록 이중 진공장치(15)를 구비한다. According to this embodiment, in order to prevent this phenomenon, as shown in FIGS. 1 and 2 , a double vacuum device 15 is provided to surround the pipe line 11 on the outside of the inner tank 10 . .
본 실시예에 따른 이중 진공장치(15)의 내부는 진공상태로 유지된다. The inside of the double vacuum device 15 according to the present embodiment is maintained in a vacuum state.
이와 같이, 배관라인(11)을 이중 진공장치(15)가 감싸도록 함으로써, 습기의 동결을 방지할 수 있고, 동결되어있던 습기가 녹더라도 외부탱크에 물이 차지 않도록 할 수 있어, 외부탱크와 진공부의 진공상태를 유지할 수 있다. In this way, by allowing the double vacuum device 15 to surround the piping line 11, it is possible to prevent freezing of moisture, and even if the frozen moisture is melted, water can not be filled in the external tank. It is possible to maintain the vacuum state of the vacuum part.
본 발명은 상기 실시예에 한정되지 않고, 본 발명의 기술적 요지를 벗어나지 아니하는 범위 내에서 다양하게 수정 또는 변형되어 실시될 수 있음은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어서 자명한 것이다.The present invention is not limited to the above embodiments, and it is apparent to those of ordinary skill in the art that various modifications or variations can be implemented without departing from the technical gist of the present invention. did it
<부호의 설명><Explanation of code>
10 : 내부탱크10: inner tank
11 : 배관라인 11: piping line
N1, N2, N4 : 배출구 N1, N2, N4 : Outlet
15 : 이중 진공장치15: double vacuum device

Claims (5)

  1. 외부탱크; external tank;
    상기 외부탱크 내부에 고정설치되며 LNG를 저장하는 내부탱크; an inner tank which is fixedly installed inside the outer tank and stores LNG;
    상기 외부탱크와 내부탱크 사이에 설치되는 배관라인; 및a piping line installed between the outer tank and the inner tank; and
    상기 외부탱크 벽면에 설치되어 상기 배관라인에 습기가 동결되는 것을 방지하는 이중 진공장치;를 포함하는, 이중 진공장치가 구비된 LNG ISO 탱크.A double vacuum device installed on the wall of the external tank to prevent moisture from freezing in the pipe line; including, an LNG ISO tank equipped with a double vacuum device.
  2. 청구항 1에 있어서, The method according to claim 1,
    상기 외부탱크와 내부탱크 사이에 형성되며 진공상태가 유지되는 진공부;를 더 포함하고, It further includes; a vacuum unit formed between the outer tank and the inner tank and maintaining a vacuum state,
    상기 배관라인 및 이중 진공장치는 상기 진공부에 구비되는, 이중 진공장치가 구비된 LNG ISO 탱크.The pipeline line and the double vacuum device are provided in the vacuum unit, the LNG ISO tank having a double vacuum device.
  3. 청구항 1에 있어서, The method according to claim 1,
    상기 이중 진공장치의 내부는 진공상태가 유지되는, 이중 진공장치가 구비된 LNG ISO 탱크.An LNG ISO tank equipped with a double vacuum device, in which a vacuum state is maintained inside the double vacuum device.
  4. 청구항 1에 있어서, The method according to claim 1,
    상기 LNG는 배관라인을 통해 외부로부터 상기 내부탱크로 주입되거나 상기 내부탱크로부터 외부로 배출되는, 이중 진공장치가 구비된 LNG ISO 탱크.The LNG is injected into the inner tank from the outside through a piping line or discharged from the inner tank to the outside, an LNG ISO tank equipped with a double vacuum device.
  5. 청구항 1에 있어서, The method according to claim 1,
    상기 내부탱크를 감싸며 내부탱크에 저장된 LNG의 극저온을 유지하기 위한 단열재;를 더 포함하는, 이중 진공장치가 구비된 LNG ISO 탱크.An LNG ISO tank with a double vacuum device, further comprising a; insulation material for enclosing the inner tank and maintaining the cryogenic temperature of the LNG stored in the inner tank.
PCT/KR2021/005726 2020-05-08 2021-05-07 Lng iso tank provided with double vacuum apparatus WO2021225401A1 (en)

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KR10-2020-0054957 2020-05-08
KR1020200054957A KR20210136554A (en) 2020-05-08 2020-05-08 LNG ISO tank pipe line double vacuum system

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4154626B2 (en) * 1998-06-12 2008-09-24 株式会社石井鐵工所 Cold storage structure of low temperature double shell storage tank
US20080307798A1 (en) * 2007-06-12 2008-12-18 Yang Luo Cryogenic liquid tank and method
JP2018154357A (en) * 2017-03-16 2018-10-04 大陽日酸株式会社 Freezing storage container
KR101943335B1 (en) * 2017-07-31 2019-01-29 한국가스공사 Container Carrier
KR101978332B1 (en) * 2017-10-30 2019-08-28 대우조선해양 주식회사 ISO LNG Tank Container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4154626B2 (en) * 1998-06-12 2008-09-24 株式会社石井鐵工所 Cold storage structure of low temperature double shell storage tank
US20080307798A1 (en) * 2007-06-12 2008-12-18 Yang Luo Cryogenic liquid tank and method
JP2018154357A (en) * 2017-03-16 2018-10-04 大陽日酸株式会社 Freezing storage container
KR101943335B1 (en) * 2017-07-31 2019-01-29 한국가스공사 Container Carrier
KR101978332B1 (en) * 2017-10-30 2019-08-28 대우조선해양 주식회사 ISO LNG Tank Container

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