KR102608688B1 - Insulation system of corner part in membrane type lng storage tank - Google Patents

Insulation system of corner part in membrane type lng storage tank Download PDF

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KR102608688B1
KR102608688B1 KR1020170018020A KR20170018020A KR102608688B1 KR 102608688 B1 KR102608688 B1 KR 102608688B1 KR 1020170018020 A KR1020170018020 A KR 1020170018020A KR 20170018020 A KR20170018020 A KR 20170018020A KR 102608688 B1 KR102608688 B1 KR 102608688B1
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wall
insulation wall
corner
corner support
storage tank
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KR20180092402A (en
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박광준
신정섭
허행성
김광석
강중규
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한화오션 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
    • 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
    • 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
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/02—Metallic materials
    • B63B2231/04—Irons, steels or ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/32—Vegetable materials or material comprising predominately vegetable material
    • B63B2231/34—Wood or wood products
    • B63B2701/10—
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0354—Wood
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more walls
    • 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
    • F17C2260/011—Improving strength
    • 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
    • F17C2260/013—Reducing manufacturing time or effort

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

Abstract

본 발명에 따른 멤브레인형 저장탱크의 코너부 단열벽은, 액화천연가스 저장탱크의 내부 공간을 외부와 단열시키며, 액화천연가스 저장탱크의 코너에 마련되도록 절곡된 형태를 갖는 2차 단열벽, 상기 2차 단열벽의 절곡된 모서리를 따라 결합되는 2차 코너지지부 및 상기 2차 코너지지부와 이격되어 상기 2차 단열벽 상에 결합되는 결합부를 포함하되, 상기 결합부는, 상기 2차 단열벽과 결합하는 플라이우드; 상기 플라이우드 상측에 설치되는 1차 단열벽과 상기 2차 단열벽을 기계적으로 결합시키는 단열벽 결합부재로 구성함으로써, 적층되는 단열벽이 기계적으로 견고하게 결합하고, 공정 및 공사기간을 줄어들게 할 수 있다.The corner insulation wall of the membrane-type storage tank according to the present invention is a secondary insulation wall that insulates the internal space of the liquefied natural gas storage tank from the outside and has a bent shape to be provided at the corner of the liquefied natural gas storage tank. It includes a secondary corner support part coupled along the bent edge of the secondary insulation wall and a coupling part spaced apart from the secondary corner support part and coupled to the secondary insulation wall, wherein the coupling part is coupled to the secondary insulation wall. playing plywood; By consisting of an insulation wall coupling member that mechanically couples the primary insulation wall installed on the upper side of the plywood and the secondary insulation wall, the laminated insulation walls are mechanically firmly joined, and the process and construction period can be reduced. there is.

Description

멤브레인형 저장탱크의 코너부 단열시스템 {INSULATION SYSTEM OF CORNER PART IN MEMBRANE TYPE LNG STORAGE TANK}Corner insulation system of membrane type storage tank {INSULATION SYSTEM OF CORNER PART IN MEMBRANE TYPE LNG STORAGE TANK}

본 발명은 멤브레인형 저장탱크의 일 구성인 코너부 단열시스템 구조에 관한 것이다.The present invention relates to the structure of a corner insulation system, which is a component of a membrane-type storage tank.

세계적으로 친환경 사업에 대한 관심이 증가하고 있는 가운데 석유, 석탄 등과 같은 기존의 에너지원을 대체할 수 있는 청정연료의 수요가 점차 증가하고 있다. 이러한 상황에서 천연가스는 청정성, 안정성, 편리성을 두루 갖춘 주요 에너지원으로 다양한 분야에서 사용되고 있다.As interest in eco-friendly businesses is increasing globally, demand for clean fuels that can replace existing energy sources such as oil and coal is gradually increasing. In this situation, natural gas is used in various fields as a major energy source with cleanliness, stability, and convenience.

우리나라는 배관을 통해 천연가스를 직접 공급받는 미국이나 유럽과 달리 천연가스를 초저온으로 액화시킨 액화천연가스(LNG: Liquefied Natural Gas)를 도입하여 소비자에게 공급하고 있다. 따라서, 국내의 천연가스의 수요증가와 함께 액화천연가스를 저장하기 위한 화물창의 수요 역시 증가하고 있다.Unlike the United States or Europe, where natural gas is supplied directly through pipes, Korea has introduced liquefied natural gas (LNG), which is liquefied natural gas at ultra-low temperature, and is supplying it to consumers. Therefore, along with the increase in domestic demand for natural gas, the demand for cargo holds to store liquefied natural gas is also increasing.

천연가스(natural gas)는 메탄(methane)을 주성분으로 하고, 소량의 에탄(ethane), 프로판(propane) 등을 포함하는 화석연료로서, 최근 다양한 기술 분야에서 저공해 에너지원으로서 각광받고 있다.Natural gas is a fossil fuel that mainly contains methane and small amounts of ethane and propane, and has recently been in the spotlight as a low-pollution energy source in various technological fields.

천연가스는, 육상 또는 해상의 가스배관을 통해 가스 상태로 운반되거나, 또는 액화된 액화천연가스(LNG)의 상태로 LNG 수송선에 저장된 채 원거리의 소비처로 운반된다. 액화천연가스는 천연가스를 극저온(대략 -163℃ 이하)으로 냉각하여 얻어지는 것으로 가스 상태의 천연가스일 때보다 그 부피가 대략 1/600로 줄어들어 해상을 통한 원거리 운반에 매우 적합하다.Natural gas is transported in a gaseous state through gas pipelines on land or at sea, or is stored in an LNG transport ship in the form of liquefied liquefied natural gas (LNG) and transported to distant consumers. Liquefied natural gas is obtained by cooling natural gas to extremely low temperatures (approximately -163°C or lower), and its volume is reduced to approximately 1/600 compared to gaseous natural gas, making it very suitable for long-distance transportation by sea.

액화천연가스 운반선에는 천연가스를 냉각하여 액화시킨 액화천연가스를 보관 및 저장할 수 있는 저장탱크(cargo, 화물창이라고도 함)가 구비된다. 액화천연가스의 끓는점은 대기압에서 약 -162℃ 정도이므로, 액화천연가스의 저장탱크는 액화천연가스를 안전하게 보관하고 저장하기 위해 알루미늄강, 스테인리스강, 35% 니켈강 등과 같은 초저온에 견딜 수 있는 재료로 제작될 수 있으며, 열응력 및 열수축에 강인하고, 열침입을 막을 수 있는 구조로 설계된다.A liquefied natural gas carrier is equipped with a storage tank (also called a cargo hold) that can store and store liquefied natural gas that has been cooled and liquefied. The boiling point of liquefied natural gas is approximately -162°C at atmospheric pressure, so storage tanks for liquefied natural gas are made of materials that can withstand extremely low temperatures such as aluminum steel, stainless steel, and 35% nickel steel to safely store and store liquefied natural gas. It can be manufactured and is designed with a structure that is strong against thermal stress and heat shrinkage and prevents heat intrusion.

LNG를 싣고 바다를 운항하여 육상 수요처에 LNG를 하역하기 위한 LNG 수송선, LNG를 싣고 바다를 운항하여 육상 수요처에 도착한 후 저장된 LNG를 재기화하여 천연가스 상태로 하역하는 LNG RV(Regasification Vessel), 최근에는 LNG FPSO(Floating, Production, Storage and Offloading)나 LNG FSRU(Floating Storage and Regasification Unit)와 같은 부유식 해상 구조물에도 LNG 수송선이나 LNG RV에 설치되는 저장탱크가 포함된다.LNG transport ships that carry LNG on the sea and unload LNG to onshore customers; LNG RV (Regasification Vessel) that sails on the sea with LNG and arrives at land customers, then regasifies the stored LNG and unloads it as natural gas; recently, Includes storage tanks installed on LNG carriers or LNG RVs as well as floating offshore structures such as LNG FPSO (Floating, Production, Storage and Offloading) or LNG FSRU (Floating Storage and Regasification Unit).

LNG FPSO는, 생산된 천연가스를 해상에서 직접 액화시켜 저장탱크 내에 저장하고, 필요 시 이 저장탱크 내에 저장된 LNG를 LNG 수송선으로 옮겨싣기 위해 사용되는 부유식 해상 구조물이다. 또 LNG FSRU는 육상으로부터 멀리 떨어진 해상에서 LNG 수송선으로부터 하역되는 LNG를 저장탱크에 저장한 후 필요에 따라 LNG를 기화시켜 육상수요처에 공급하는 부유식 해상 구조물이다.LNG FPSO is a floating offshore structure used to liquefy produced natural gas directly at sea, store it in a storage tank, and transfer the LNG stored in this storage tank to an LNG transport ship when necessary. In addition, the LNG FSRU is a floating offshore structure that stores LNG unloaded from an LNG transport ship in a storage tank at sea far from land, vaporizes the LNG when necessary, and supplies it to onshore users.

이와 같이 LNG와 같은 액체화물을 해상에서 수송하거나 보관하는 LNG 수송선, LNG RV, LNG FPSO, LNG FSRU 등의 해상 구조물 내에는 LNG를 극저온 상태로 저장하기 위한 저장탱크가 설치되어 있다.In this way, storage tanks to store LNG in a cryogenic state are installed within offshore structures such as LNG carriers, LNG RVs, LNG FPSOs, and LNG FSRUs that transport or store liquid cargo such as LNG at sea.

이러한 저장탱크는 단열재에 화물의 하중이 직접적으로 작용하는지 여부에 따라 독립탱크형(Independent Tank)과 멤브레인형(Membrane Type)으로 분류할 수 있다. 멤브레인형 저장탱크는 GTT NO 96형과 TGZ Mark Ⅲ형으로 나눠지며, 독립탱크형 저장탱크는 MOSS형과 IHI-SPB형으로 나눠진다.These storage tanks can be classified into independent tank type and membrane type depending on whether the load of the cargo acts directly on the insulation material. Membrane type storage tanks are divided into GTT NO 96 type and TGZ Mark Ⅲ type, and independent tank type storage tanks are divided into MOSS type and IHI-SPB type.

GTT NO 96형과 GTT Mark Ⅲ형은 종래 GT형과 TGZ형으로 불리던 것인데, 1995년 Gaz Transport(GT)사와 Technigaz(TGZ)사가 GTT(Gaztransport & Technigaz)사로 명칭이 변경되면서 각각 GT형은 GTT NO 96형으로, TGZ형은 GTT Mark Ⅲ형으로 개칭되어 사용되고 있다.The GTT NO 96 type and GTT Mark Ⅲ type were previously called the GT type and TGZ type. In 1995, when Gaz Transport (GT) and Technigaz (TGZ) changed their names to GTT (Gaztransport & Technigaz), the GT type was changed to GTT NO. As the 96 type, the TGZ type has been renamed and is being used as the GTT Mark III type.

멤브레인형의 액화천연가스 화물창은 선체 내벽 위에 설치되는 2차 단열층, 2차 단열층 위에 설치되는 2차 방벽, 2차 방벽 위에 설치되는 1차 단열층 및 1차 단열층 위에 설치되는 1차 방벽을 포함한다.The membrane-type liquefied natural gas cargo hold includes a secondary insulation layer installed on the inner wall of the hull, a secondary barrier installed on the secondary insulation layer, a primary insulation layer installed on the secondary barrier, and a primary barrier installed on the primary insulation layer.

단열층은 외부의 열이 화물창 내부로 침입하지 못하게 하여 액화천연가스가 기화되지 않도록 하기 위한 것이고, 방벽은 액화천연가스가 누출되지 않도록 하기 위한 것으로, 하나의 방벽이 파손되더라도 다른 방벽이 액화천연가스의 누출을 막을 수 있도록 화물창의 단열구조는 이중으로 구성된다.The insulation layer is to prevent external heat from entering the cargo hold and to prevent liquefied natural gas from vaporizing, and the barrier is to prevent liquefied natural gas from leaking. Even if one barrier is damaged, the other barrier is designed to prevent liquefied natural gas from evaporating. The cargo hold has a double insulation structure to prevent leakage.

종래 Mark Ⅲ 타입의 액화천연가스 화물창의 코너 단열구조는 한국 등록특허 제10-0499709호 공보에 개시되어 있다.The corner insulation structure of a conventional Mark III type liquefied natural gas cargo hold is disclosed in Korean Patent Registration No. 10-0499709.

도 1은 종래 Mark Ⅲ 타입의 액화천연가스 화물창의 코너 단열구조를 보인 단면도이다.Figure 1 is a cross-sectional view showing the corner insulation structure of a conventional Mark III type liquefied natural gas cargo hold.

도 1을 참조하면, 종래 Mark Ⅲ 타입의 LNG 화물창의 코너 단열구조는, 액화천연가스를 저장하는 선박의 선체 내벽(1)에 형성된 코너부에 설치되는 2차 단열층(10)과, 2차 단열층(10)의 상부에 설치되는 2차 밀봉벽(트리플렉스)(20), 2차 밀봉벽(20)의 상부에 설치되는 1차 단열층(30), 및 화물창의 비대칭 하중을 받을 수 있도록 1차 단열층(30)의 상부에 설치되는 금속재질인 L자 형태의 코너 지지판(40)으로 구성된다.Referring to Figure 1, the corner insulation structure of the conventional Mark III type LNG cargo hold includes a secondary insulation layer 10 installed at a corner formed on the inner wall 1 of the hull of a ship storing liquefied natural gas, and a secondary insulation layer. A secondary sealing wall (triple) (20) installed on the upper part of (10), a primary insulation layer (30) installed on the upper part of the secondary sealing wall (20), and a primary insulation layer (30) installed on the upper part of the cargo hold to receive the asymmetrical load. It consists of an L-shaped corner support plate 40 made of metal installed on top of the insulation layer 30.

코너 지지판(40)의 가장자리 하단부에는 우든 블록(Wooden Block)(50)이 볼트(미도시)에 의해 볼팅 된다. 1차 단열층(30) 및 2차 단열층(10)은 폴리우레탄 폼으로 구성되고, 2차 단열층(10)의 모서리 부분에 글라스 울이 충진된다. 2차 단열층(10)은 매스틱(60)에 의해서 선체 내벽(1)과 일정 간격을 유지하도록 구성된다.A wooden block 50 is bolted to the lower edge of the corner support plate 40 using a bolt (not shown). The primary insulation layer 30 and the secondary insulation layer 10 are made of polyurethane foam, and the corners of the secondary insulation layer 10 are filled with glass wool. The secondary insulation layer 10 is configured to maintain a certain distance from the inner wall of the hull 1 by using mastic 60.

그러나 종래 Mark Ⅲ 타입의 LNG 화물창의 코너 단열구조는, 화물창의 가장자리에 위치한 코너 부분의 단열패널 구조로서, 극저온의 열 수축 시, 1차 밀봉벽이 수직 및 수평 방향으로 수축되어 코너 부분의 단열패널에 높은 응력을 발생시켜서 단열성능을 떨어뜨리는 문제가 있다.However, the corner insulation structure of the conventional Mark III type LNG cargo hold is an insulation panel structure at the corner located at the edge of the cargo hold. When heat shrinking at cryogenic temperatures, the primary sealing wall shrinks in the vertical and horizontal directions, causing the insulation panel at the corner to be damaged. There is a problem of deteriorating insulation performance by generating high stress.

국내 등록특허 제10-0499709호Domestic Registered Patent No. 10-0499709 국내 공개특허 제10-2015-0145353호Domestic Public Patent No. 10-2015-0145353

본 발명은 상술한 문제점을 해결하고자 안출된 것으로서, 본 발명은 멤브레인 타입의 저장탱크에서 2차 밀봉벽이 스테인리스 강으로 형성되면서도, 열변형에 대응할 수 있고, 단열벽과의 결합이 용이하도록 구성되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공하는 데 그 목적이 있다.The present invention was devised to solve the above-mentioned problems. The present invention is a membrane-type storage tank in which the secondary sealing wall is formed of stainless steel, but is capable of responding to thermal deformation and is configured to be easily combined with the insulating wall. The purpose is to provide an insulation system for the corners of membrane-type storage tanks.

상기 목적을 달성하기 위한 본 발명의 일 측면에 따르면, 액화천연가스 저장탱크의 내부 공간을 외부와 단열시키며, 액화천연가스 저장탱크의 코너에 마련되도록 절곡된 형태를 갖는 2차 단열벽과; 상기 2차 단열벽의 절곡된 모서리를 따라 결합되는 2차 코너지지부와; 상기 2차 코너지지부와 이격되어 상기 2차 단열벽 상에 결합되는 결합부;를 포함하고, 상기 결합부는, 상기 2차 단열벽과 결합하는 플라이우드와; 상기 플라이우드 상측에 설치되는 1차 단열벽과 상기 2차 단열벽을 기계적으로 결합시키는 단열벽 결합부재로 구성되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공할 수 있다.According to one aspect of the present invention for achieving the above object, there is provided a secondary insulation wall that insulates the internal space of the liquefied natural gas storage tank from the outside and has a bent shape to be provided at the corner of the liquefied natural gas storage tank; a secondary corner support part coupled along a bent edge of the secondary insulation wall; It includes: a coupling part spaced apart from the secondary corner support and coupled to the secondary insulating wall, wherein the coupling part includes plywood coupled to the secondary insulating wall; It is possible to provide a corner insulation system for a membrane-type storage tank consisting of an insulation wall coupling member that mechanically couples the primary insulation wall installed on the upper side of the plywood and the secondary insulation wall.

상기 결합부는 상기 2차 코너지지부에서 멀어지는 방향으로 적어도 하나로 구성하되, 2 이상으로 구성되는 경우에는 각각의 결합부가 서로 이격되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공할 수 있다.The coupling portion is composed of at least one in a direction away from the secondary corner support portion, but when composed of two or more, it is possible to provide a corner insulation system of a membrane-type storage tank in which each coupling portion is spaced apart from each other.

상기 결합부는 상기 2차 단열벽의 길이 방향을 따라 적어도 하나로 구성하되, 2 이상으로 구성되는 경우에는 각각의 결합부가 서로 이격되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공할 수 있다. The coupling portion is composed of at least one along the longitudinal direction of the secondary insulation wall, but when composed of two or more, it is possible to provide a corner insulation system of a membrane-type storage tank in which each coupling portion is spaced apart from each other.

상기 2차 코너지지부는 플라이우드(plywood) 상에 스틸이 조립되어 마련되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공할 수 있다.The secondary corner support portion can provide an insulation system for the corner portion of a membrane-type storage tank that is prepared by assembling steel on plywood.

상기 2차 코너지지부는 상기 2차 단열벽의 절곡된 모서리를 따라 적어도 하나로 구성하되, 2 이상으로 구성되는 경우에는 각각의 2차 코너지지부가 서로 이격되는 멤브레인형 저장탱크의 코너부 단열시스템 을 제공할 수 있다.The secondary corner support portion is composed of at least one along the bent edge of the secondary insulation wall, but when composed of two or more, each secondary corner support portion is spaced apart from each other. It provides a corner insulation system of a membrane-type storage tank. can do.

본 발명의 다른 측면에 따르면, 액화천연가스 저장탱크의 내부 공간을 외부와 단열시키며, 액화천연가스 저장탱크의 코너에 마련되도록 절곡된 형태를 갖는 단열벽과, 상기 단열벽의 절곡된 모서리를 따라 결합되는 2차 코너지지부와, 상기 단열벽 상에 적층되는 별도의 단열벽이 기계적으로 결합되도록하는 결합부재를 갖는 복수의 결합부를 포함하되, 상기 2차 코너지지부 및 상기 복수의 결합부는 서로 이격되도록 홈이 배치되는 멤브레인형 저장탱크의 코너부 단열시스템을 제공할 수 있다.According to another aspect of the present invention, an insulating wall that insulates the internal space of the liquefied natural gas storage tank from the outside and has a bent shape to be provided at a corner of the liquefied natural gas storage tank, and an insulating wall along the bent edge of the insulating wall. It includes a plurality of coupling parts having a coupling member that mechanically couples the secondary corner support part to be coupled with the separate insulation wall laminated on the insulation wall, wherein the secondary corner support part and the plurality of coupling parts are spaced apart from each other. An insulation system for the corners of a membrane-type storage tank in which grooves are arranged can be provided.

본 발명의 멤브레인형 저장탱크의 코너부 단열시스템에 의하면, 극저온에서도 우수한 성능을 갖는 스테인리스 강을 2차 밀봉벽으로 사용하면서도 2차 밀봉벽에 형성되는 주름 구조로 인해서 열변형에 충분히 대응이 가능하다.According to the corner insulation system of the membrane-type storage tank of the present invention, stainless steel, which has excellent performance even at extremely low temperatures, is used as the secondary sealing wall, and it is possible to sufficiently respond to thermal deformation due to the wrinkle structure formed on the secondary sealing wall. .

그리고, 코너부 단열벽 상에 2차 코너지지부와 결합부를 분리형성하고, 코너부 단열벽의 내측 모서리에 형성되는 2차 코너지지부만 스틸 소재로 이루어짐으로써, 2차 밀봉벽이 코너부 단열벽의 2차 코너지지부와 결합부 상에 결합되더라도, 2차 밀봉벽 상측에 마련되는 제1 단열벽의 코너부와 본딩이 아닌 물리적 결합이 용이하다.In addition, the secondary corner support and the coupling part are formed separately on the corner insulation wall, and only the secondary corner support formed at the inner corner of the corner insulation wall is made of steel material, so that the secondary sealing wall is attached to the corner insulation wall. Even if it is coupled to the secondary corner support part and the coupling part, it is easy to physically couple it rather than bonding it to the corner part of the first insulating wall provided on the upper side of the secondary sealing wall.

또한, 결합부에 의해 본딩 작업이 없이 기계적으로 1차 단열패널과 2차 단열패널이 결합하기 때문에 공정이 간편하고 공사기간이 대폭 줄어드는 것이 가능하다.In addition, since the primary and secondary insulation panels are mechanically joined by the joint without bonding work, the process is simple and the construction period can be significantly reduced.

또한, 주름을 가지는 형태로 구성되는 2차 밀봉벽의 주름에 대응하여, 2차 코너지지부와 결합부가 다수 분할되어 형성되고, 2차 코너지지부와 결합부 간에도 간격을 형성함으로써, 2차 밀봉벽을 스테인리스 강으로 형성시킬 수 있게 한다.In addition, in response to the wrinkles of the secondary sealing wall, which has a wrinkled shape, the secondary corner support portion and the coupling portion are formed by dividing them into multiple parts, and a gap is also formed between the secondary corner support portion and the coupling portion, thereby forming the secondary sealing wall. It can be formed from stainless steel.

이렇게 2차 밀봉벽을 스테인리스 강으로 형성시키는 것이 가능하여, 인바강(Invar steel)으로 구현하는 것에 비해 소재비를 대폭 줄이는 것이 가능하다.In this way, it is possible to form the secondary sealing wall with stainless steel, making it possible to significantly reduce material costs compared to implementing it with Invar steel.

한편, 2차 밀봉벽을 스테인리스 강으로 구성하면서도, 코너부를 튜브가 아닌 패널 형태로 제작이 가능하여 작업성이 용이하다.Meanwhile, while the secondary sealing wall is made of stainless steel, the corner portion can be manufactured in the form of a panel rather than a tube, making workability easier.

도 1은 종래 Mark Ⅲ 타입의 LNG 화물창의 코너 단열구조를 개략적으로 도시한 종단면도이다.
도 2는 본 발명에 의한 멤브레인형 저장탱크의 단열시스템을 개략적으로 도시한 단면도이다.
도 3는 본 발명에 의한 멤브레인형 저장탱크의 코너부 단열시스템을 개략적으로 도시한 사시도이다.
도 3은 본 발명에 의한 멤브레인형 저장탱크의 코너부 단열시스템을 개략적으로 도시한 종단면도이다.Figure 1 is a longitudinal cross-sectional view schematically showing the corner insulation structure of a conventional Mark III type LNG cargo hold.
Figure 2 is a cross-sectional view schematically showing the insulation system of a membrane-type storage tank according to the present invention.
Figure 3 is a perspective view schematically showing the corner insulation system of a membrane-type storage tank according to the present invention.
Figure 3 is a longitudinal cross-sectional view schematically showing the corner insulation system of a membrane-type storage tank according to the present invention.

이하, 본 발명의 바람직한 실시 예를 첨부된 도면들을 참조하여 상세히 설명한다. 우선, 각 도면의 구성 요소들에 참조 부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면 상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. First, it should be noted that when adding reference signs to components in each drawing, the same components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

먼저, 도 2 내지 도 4를 참조하여 본 발명의 실시예에 의한 멤브레인형 저장탱크의 코너부 단열시스템을 설명한다. First, the corner insulation system of a membrane-type storage tank according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

도 2는 본 발명에 의한 멤브레인형 저장탱크의 단열시스템을 개략적으로 도시한 단면도이고, 도 3은 본 발명에 의한 멤브레인형 저장탱크의 코너부 단열시스템을 개략적으로 도시한 사시도이며, 도 4는 본 발명에 의한 멤브레인형 저장탱크의 코너부 단열시스템을 개략적으로 도시한 종단면도이다. Figure 2 is a cross-sectional view schematically showing the insulation system of the membrane-type storage tank according to the present invention, Figure 3 is a perspective view schematically showing the corner insulation system of the membrane-type storage tank according to the present invention, and Figure 4 is the present invention. This is a longitudinal cross-sectional view schematically showing the corner insulation system of a membrane-type storage tank according to the invention.

본 발명의 실시예에 의한 액화천연가스 저장탱크는, 도 2에 도시된 바와 같이, 1차 밀봉벽(700), 1차 단열벽(600), 2차 밀봉벽(500) 및 2차 단열벽(100)을 포함한다.As shown in FIG. 2, the liquefied natural gas storage tank according to an embodiment of the present invention includes a primary sealing wall 700, a primary insulation wall 600, a secondary sealing wall 500, and a secondary insulation wall. Includes (100).

1차 밀봉벽(700)은 1차 단열벽(600) 위에 설치되어 액화천연가스와 접하면서 저장탱크에 저장된 액화천연가스(LNG)를 액밀한다.The primary sealing wall 700 is installed on the primary insulation wall 600 and comes into contact with the liquefied natural gas to liquid-tighten the liquefied natural gas (LNG) stored in the storage tank.

2차 밀봉벽(500)은 1차 단열벽(600)과 2차 단열벽(100) 사이에 설치되어 1차 밀봉벽(700)이 새는 경우 액화천연가스를 액밀하는 역할을 한다.The secondary sealing wall 500 is installed between the primary insulation wall 600 and the secondary insulation wall 100 and serves to liquid-tighten the liquefied natural gas when the primary sealing wall 700 leaks.

1차 밀봉벽(700)에는 온도 변화에 의한 수축 및 신장 시 파손 등을 방지하기 위해서 다수의 주름부가 형성된다. 주름부는 액화천연가스의 선하적에 따른 온도변화에 의하여 신장되거나 수축되어 1차 밀봉벽(700)에 가해지는 열적 변형에 따른 파손을 방지한다.A plurality of wrinkles are formed in the primary sealing wall 700 to prevent damage during contraction and expansion due to temperature changes. The wrinkles expand or contract due to temperature changes due to loading of liquefied natural gas, thereby preventing damage due to thermal deformation applied to the primary sealing wall 700.

1차 밀봉벽(700)은 스테인레스 스틸로 제작될 수 있다.The primary sealing wall 700 may be made of stainless steel.

본 발명은 이러한 구조 중 액화천연가스 저장탱크의 코너부 단열벽에 관계한다.Among these structures, the present invention relates to the corner insulation wall of a liquefied natural gas storage tank.

본 발명에 의한 멤브레인형 저장탱크의 코너부는 패널 형태의 단열벽과 밀봉을 위한 멤브레인이 적층되는 구조를 가진다.The corner portion of the membrane-type storage tank according to the present invention has a structure in which a panel-shaped insulating wall and a membrane for sealing are laminated.

도 3 및 도 4를 참조하면, 본 발명에 의한 2차 단열벽(100)은 다양한 소재의 단열재(예를 들어, 폴리우레탄폼(PUF), 유리섬유 강화 폴리우레탄폼(R-PUF) 등)로 형성되는 2차 단열층(110)에 의해, 액화천연가스 저장탱크의 내부 공간이 외부와 열적으로 차단되도록 한다.Referring to Figures 3 and 4, the secondary insulation wall 100 according to the present invention is made of various insulation materials (e.g., polyurethane foam (PUF), glass fiber reinforced polyurethane foam (R-PUF), etc.) The internal space of the liquefied natural gas storage tank is thermally isolated from the outside by the secondary insulation layer 110 formed of .

2차 단열층(110)의 상부에는 탑 플라이우드(120)가 결합되고, 하부에는 바텀 플라이우드(130)가 결합되며, 이들 부재를 결합하는 데에는 다양한 접착제(예를 들어, PU(polyurethane)-glue)가 사용될 수 있다. Top plywood 120 is coupled to the upper part of the secondary insulation layer 110, and bottom plywood 130 is coupled to the lower part, and various adhesives (e.g., PU (polyurethane)-glue) are used to join these members. ) can be used.

2차 단열벽의 하부에는 선체 내벽(1)과 일정 간격을 유지하도록 간격유지 부재, 예를 들어 매스틱(60)이 접착제(예를 들어, PU-glue)에 의해 결합될 수 있다. At the lower part of the secondary insulation wall, a gap maintenance member, for example, mastic 60, may be coupled with an adhesive (for example, PU-glue) to maintain a certain gap with the hull inner wall (1).

2차 단열층(110)은 코너부에 맞도록 절곡된 형태를 가지며, 대체로 90도 내외의 각을 형성할 수 있다.The secondary insulation layer 110 has a bent shape to fit the corner portion, and can generally form an angle of about 90 degrees.

이러한 2차 단열층(110) 상에(엄밀하게 설명하면 탑 플라이우드(120) 상부에)에 2차 코너지지부(200)와 결합부(300)가 접착제에 의해 결합되고, 2차 코너지지부(200) 및 결합부(300) 상에 멤브레인으로서 2차 밀봉벽(500)이 적층이 되는 구조를 가진다. 즉, 본 발명에서의 코너부 단열 시스템은 2차 단열층(110)의 절곡된 모서리를 따라 결합되는 2차 코너지지부(200)과 결합부(300)로 구분되어 결합될 수 있다.On this secondary insulation layer 110 (to be strictly speaking, on top of the top plywood 120), the secondary corner support part 200 and the coupling part 300 are joined by adhesive, and the secondary corner support part 200 ) and a secondary sealing wall 500 as a membrane are stacked on the coupling portion 300. That is, the corner insulation system in the present invention can be divided into and combined with a secondary corner support part 200 and a coupling part 300 coupled along the bent edge of the secondary insulation layer 110.

코너에 형성되는 2차 코너지지부(200)는 플라이우드(220)에 2차 코너지지부재(210)가 결합되어 형성되는데, 2차 코너지지부재(210)는 스틸(steel) 재질로 제작될 수 있다. 이러한 2차 코너지지부(200)는 2차 단열층(110)의 절곡된 모서리를 따라 형성되고, 도 3에 도시된 바와 같이, 다수가 분할 배열되어 2차 단열벽(100)에 접착제에 의해 본딩(bonding) 결합될 수 있다. The secondary corner support member 200 formed at the corner is formed by combining the secondary corner support member 210 with the plywood 220. The secondary corner support member 210 can be made of steel. there is. These secondary corner supports 200 are formed along the bent edges of the secondary insulation layer 110, and as shown in FIG. 3, a number of them are divided and arranged and bonded to the secondary insulation wall 100 by an adhesive ( bonding) can be combined.

그리고, 결합부(300)는 2차 단열벽(100) 상부와 결합하는 플라이우드(320) 및 1차 단열벽(600)과 기계적으로 결합시키는 단열벽 결합부재(310)로 구성되며, 결합부(300)는 코너가 아닌 평탄면에 결합시키되, 2차 코너지지부(200)와 이격되어 배열되며, 2차 단열벽(100)의 길이 방향을 따라서 다수가 분할 배열되어 본딩(bonding)될 수 있다. In addition, the coupling portion 300 is composed of plywood 320 coupled to the upper part of the secondary insulation wall 100 and an insulation wall coupling member 310 mechanically coupled to the primary insulation wall 600, and the coupling portion (300) is coupled to a flat surface rather than a corner, but is arranged to be spaced apart from the secondary corner support portion 200, and can be divided and arranged in multiple pieces along the longitudinal direction of the secondary insulation wall 100 for bonding. .

본 발명의 2차 코너지지부(200)는 저장탱크 내부공간을 밀봉시키기 위해 2차 단열벽(100) 상에 적층 형성시키는 밀봉벽을 스테인리스 강(SUS)으로 구성하기 위한 구성으로 이루어지며, 또한 밀봉벽은 2차 밀봉벽(500)으로서 2차 밀봉벽(500) 상에는 또 다른 1차 단열벽(600)이 적층되어 2차 코너지지부(200)와 결합될 수 있는 구성으로 이루어진다.The secondary corner support part 200 of the present invention is configured to form a sealing wall made of stainless steel (SUS), which is laminated on the secondary insulation wall 100 to seal the internal space of the storage tank. The wall is a secondary sealing wall 500, and another primary insulation wall 600 is laminated on the secondary sealing wall 500 and is configured to be coupled to the secondary corner support portion 200.

그래서, 2차 코너지지부(200) 상에 적층 형성되는 2차 밀봉벽(500)은 스틸 재질인 2차 코너지지부재(210)와 용접됨으로써 적층될 수 있다. Therefore, the secondary sealing wall 500 formed by lamination on the secondary corner support member 200 can be laminated by welding with the secondary corner support member 210 made of steel.

스테인리스 강으로 마련되는 2차 밀봉벽(500)은 온도 변화에 의한 수축 및 신장 시 파손 등을 방지하기 위해서 다수의 주름부가 형성될 수 있는데, 이러한 다수의 주름부가 안착될 수 있도록 본 발명의 2차 코너지지부(200)와 결합부(300)는 이격되어 그 사이에 홈(400)이 형성되도록 하고, 결합부(330)도 분할되어 형성됨으로써, 각각의 사이에 홈(400)이 형성되도록 한다.The secondary sealing wall 500 made of stainless steel may be formed with a plurality of wrinkles to prevent damage during contraction and expansion due to temperature changes. The secondary sealing wall 500 of the present invention is used to ensure that these wrinkles can be seated. The corner support part 200 and the coupling part 300 are spaced apart so that a groove 400 is formed therebetween, and the coupling part 330 is also formed by being divided, so that a groove 400 is formed between them.

이에 따라 형성되는 홈에 2차 밀봉벽(500)의 주름부가 안착될 수 있다.Accordingly, the corrugated portion of the secondary sealing wall 500 may be seated in the groove formed.

또한, 2차 밀봉벽(500) 상에 또 다른 1차 단열벽(600)이 적층되어 코너부 단열시스템을 구성할 수 있는데, 결합부(300)의 단열벽 결합부재(310), 예를 들어 앵커(anchor) 등에 의해, 1차 단열벽(600)이 끼워질 수 있도록 형성될 수 있다.In addition, another primary insulation wall 600 can be stacked on the secondary sealing wall 500 to form a corner insulation system. The insulation wall coupling member 310 of the coupling portion 300, for example, The primary insulation wall 600 may be formed to be inserted using an anchor or the like.

이상과 같이, 본 발명에 의한 멤브레인형 저장탱크의 코너부 단열시스템에서는, 간격유지부재, 예를 들어 매스틱(60)에 의해서 선체 내벽(1)과 일정 간격을 유지하고 레벨링한 상태로 2차 단열벽(100)이 저장탱크의 코너부에 설치된다. As described above, in the corner insulation system of the membrane-type storage tank according to the present invention, a certain gap is maintained with the hull inner wall 1 by a gap maintenance member, for example, mastic 60, and the secondary insulation is leveled. The insulation wall 100 is installed at the corner of the storage tank.

2차 코너지지부(200)는 2차 단열벽(100)의 상부에 설치되고, 홈을 갖도록 인접하는 결합부(300)와 이격되도록 구성되며, 다수의 결합부(300)도 홈을 갖도록 각각 이격되도록 구성된다. The secondary corner support portion 200 is installed on the upper part of the secondary insulation wall 100 and is configured to be spaced apart from the adjacent coupling portion 300 to have a groove, and the plurality of coupling portions 300 are also spaced apart from each other to have a groove. It is structured as possible.

스테인리스 스틸로 형성되고 주름을 가지는 2차 밀봉벽(500)은 2차 코너지지부(200)에 용접 결합되도록 구성되고, 2차 밀봉벽(500)이 스테인리스 스틸임에도 불구하고, 2차 밀봉벽(500) 상으로 저장탱크의 내측에 해당되는 단열부(2차 코너지지부에 대응하는 1차 코너지지부 및 2차 단열벽에 대응하는 1차 단열벽으로 구성)가 적층되어 2차 코너지지부(200)에 용이하게 기계적으로 결합될 수 있는 구성을 가짐으로써, 이러한 적층 구조로서 멤브레인형 저장탱크가 구성될 수 있다.The secondary sealing wall 500, which is formed of stainless steel and has wrinkles, is configured to be welded to the secondary corner support portion 200, and although the secondary sealing wall 500 is stainless steel, the secondary sealing wall 500 ) On the inside of the storage tank, the insulation portion (consisting of a primary corner support portion corresponding to the secondary corner support portion and a primary insulation wall corresponding to the secondary insulation wall) is laminated to the secondary corner support portion 200. By having a configuration that can be easily mechanically coupled, a membrane-type storage tank can be constructed with this laminated structure.

이상과 같이 본 발명에 따른 멤브레인형 저장탱크 및 이를 구성하는 멤브레인 저장탱크의 코너부 단열벽은, 예시된 도면을 참조하여 설명하였으나, 본 발명은 이상에서 설명된 실시 예와 도면에 의해 한정되지 않으며, 특허청구범위 내에서 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자들에 의해 다양한 수정 및 변형이 이루어질 수 있음은 물론이다.As described above, the membrane-type storage tank according to the present invention and the corner insulation wall of the membrane storage tank constituting the same have been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings described above. , Of course, various modifications and variations can be made by those skilled in the art within the scope of the patent claims to which the present invention pertains.

1 : 선체 내벽
60 : 메스틱
100 : 2차 단열벽
110 : 2차 단열층
120 : 탑 플라이우드
130 : 바텀 플라이우드
200 : 2차 코너지지부
210 : 2차 코너지지부재
220 : 플라이우드
300 : 결합부
310 : 단열벽 결합부재
320 : 플라이우드
400 : 홈1: Hull inner wall
60: Mastic
100: Secondary insulation wall
110: secondary insulation layer
120: Top plywood
130: Bottom plywood
200: 2nd corner support
210: Secondary corner support member
220: Flywood
300: coupling part
310: Insulating wall joining member
320: Plywood
400: Home

Claims (6)

액화천연가스 저장탱크의 내부 공간을 외부와 단열시키며, 액화천연가스 저장탱크의 코너에 마련되도록 절곡된 형태를 갖는 2차 단열벽;
상기 2차 단열벽의 절곡된 모서리를 따라 결합되는 2차 코너지지부; 및
상기 2차 코너지지부와 이격되어 상기 2차 단열벽 상에 결합되는 결합부를 포함하고,
상기 결합부는,
상기 2차 단열벽과 결합하는 플라이우드;
상기 플라이우드 상측에 설치되는 1차 단열벽과 상기 2차 단열벽을 기계적으로 결합시키는 단열벽 결합부재로 구성되며,
상기 결합부는 상기 2차 코너지지부에서 멀어지는 방향으로 적어도 하나로 구성하되,
2 이상으로 구성되는 경우에는 각각의 결합부가 서로 이격되며,
상기 결합부는 상기 2차 단열벽의 길이 방향을 따라 적어도 하나로 구성하되,
2 이상으로 구성되는 경우에는 각각의 결합부가 서로 이격되며,
상기 2차 코너지지부는 상기 2차 단열벽의 절곡된 모서리를 따라 적어도 하나로 구성하되,
2 이상으로 구성되는 경우에는 각각의 2차 코너지지부가 서로 이격되며,
상기 2차 코너지지부는 플라이우드(plywood) 상에 스틸이 조립되어 마련되며,
상기 2차 단열벽은,
단열재로 형성되는 2차 단열층;
상기 2차 단열층의 상부에 결합되는 탑 플라이우드; 및
상기 2차 단열층의 하부에 결합되는 바텀 플라이우드를 포함하며,
상기 2차 단열벽의 하부에는 선체 내벽과 일정 간격을 유지하는 간격유지 부재가 결합되며,
상기 2차 코너지지부 상에 적층 형성되는 2차 밀봉벽은 스틸 재질인 2차 코너지지부재와 용접으로 적층되며,
상기 2차 밀봉벽은 다수의 주름부가 형성되며,
2차 코너지지부와 결합부가 이격되어 그 사이에 홈이 형성되도록 하고, 결합부도 분할되어 형성되므로 이에 따라 형성되는 홈에 2차 밀봉벽의 주름부가 안착되는 것을 특징으로 하는,
멤브레인형 저장탱크의 코너부 단열시스템.A secondary insulation wall that insulates the internal space of the liquefied natural gas storage tank from the outside and has a bent shape to be provided at the corner of the liquefied natural gas storage tank;
A secondary corner support part coupled along a bent edge of the secondary insulation wall; and
It includes a coupling portion spaced apart from the secondary corner support portion and coupled to the secondary insulation wall,
The coupling part,
Plywood combined with the secondary insulation wall;
It consists of an insulation wall coupling member that mechanically couples the primary insulation wall installed on the upper side of the plywood and the secondary insulation wall,
The coupling portion is composed of at least one in a direction away from the secondary corner support portion,
If it consists of two or more, each connecting part is spaced apart from each other,
The coupling portion is composed of at least one along the longitudinal direction of the secondary insulation wall,
If it consists of two or more, each connecting part is spaced apart from each other,
The secondary corner support portion is composed of at least one along a bent edge of the secondary insulating wall,
If it consists of two or more, each secondary corner support is spaced apart from each other,
The secondary corner support portion is provided by assembling steel on plywood,
The secondary insulation wall is,
A secondary insulating layer formed of an insulating material;
Top plywood coupled to the upper part of the secondary insulation layer; and
It includes bottom plywood coupled to the lower part of the secondary insulation layer,
A gap maintenance member that maintains a certain gap with the inner wall of the hull is coupled to the lower part of the secondary insulation wall,
The secondary sealing wall formed by lamination on the secondary corner support member is laminated by welding with the secondary corner support member made of steel,
The secondary sealing wall is formed with a plurality of wrinkles,
The secondary corner support and the coupling part are spaced apart so that a groove is formed between them, and the coupling part is also formed by dividing, so that the corrugated part of the secondary sealing wall is seated in the groove formed accordingly.
Corner insulation system for membrane-type storage tanks. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
KR1020170018020A 2017-02-09 2017-02-09 Insulation system of corner part in membrane type lng storage tank KR102608688B1 (en)

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