KR101144397B1 - Strake End for Reliable installation of the cargo containment of Membrane LNG Carriers - Google Patents

Strake End for Reliable installation of the cargo containment of Membrane LNG Carriers Download PDF

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Publication number
KR101144397B1
KR101144397B1 KR1020090056564A KR20090056564A KR101144397B1 KR 101144397 B1 KR101144397 B1 KR 101144397B1 KR 1020090056564 A KR1020090056564 A KR 1020090056564A KR 20090056564 A KR20090056564 A KR 20090056564A KR 101144397 B1 KR101144397 B1 KR 101144397B1
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South Korea
Prior art keywords
strike
tongue
cargo hold
transverse
welded
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KR1020090056564A
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Korean (ko)
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KR20100138165A (en
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이동주
신상범
윤중근
김대순
김현수
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현대중공업 주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C1/00Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01Shape
    • F17C2201/0147Shape complex
    • F17C2201/0157Polygonal
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2201/00Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05Size
    • F17C2201/052Size large (>1000 m3)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/01Reinforcing or suspension means
    • F17C2203/011Reinforcing means
    • F17C2203/012Reinforcing means on or in the wall, e.g. ribs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/03Thermal insulations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0612Wall structures
    • F17C2203/0626Multiple walls
    • F17C2203/0629Two walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602Wall structures; Special features thereof
    • F17C2203/0612Wall structures
    • F17C2203/0626Multiple walls
    • F17C2203/0631Three or more walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0636Metals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2203/00Vessel construction, in particular walls or details thereof
    • F17C2203/06Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634Materials for walls or layers thereof
    • F17C2203/0636Metals
    • F17C2203/0648Alloys or compositions of metals
    • F17C2203/0651Invar
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2209/00Vessel construction, in particular methods of manufacturing
    • F17C2209/22Assembling processes
    • F17C2209/221Welding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2209/00Vessel construction, in particular methods of manufacturing
    • F17C2209/23Manufacturing of particular parts or at special locations
    • F17C2209/232Manufacturing of particular parts or at special locations of walls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/032Hydrocarbons
    • F17C2221/033Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146Two-phase
    • F17C2223/0153Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033Small pressure, e.g. for liquefied gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146Two-phase
    • F17C2225/0153Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/01Improving mechanical properties or manufacturing
    • F17C2260/011Improving strength
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS 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
    • F17C2260/00Purposes of gas storage and gas handling
    • F17C2260/01Improving mechanical properties or manufacturing
    • F17C2260/013Reducing manufacturing time or effort
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00Applications
    • F17C2270/01Applications for fluid transport or storage
    • F17C2270/0102Applications for fluid transport or storage on or in the water
    • F17C2270/0105Ships

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

본 발명은 화물창 코너부의 마감 시에 수동 용접부위를 최소화하여 작업효율을 상승시킬 수 있으며, 불연속적인 형상에 의해 발생되는 응력 집중 현상을 제거하여 별도의 응력 저감 구조를 적용함 없이 화물창의 1, 2차 방벽의 피로 파괴현상을 방지할 수 있도록 함과 동시에, 선체 운동 및 열 수축에 의한 종 방향 및 횡 방향의 변형까지도 흡수할 수 있는 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드를 제공하는 것이다. 상기 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드는, 일측에 다수개의 횡 방향 주름이 일정간격으로 형성되도록 프레스 가공되며, 일측 끝단부에서부터 상기 횡 방향 주름의 일측단까지는 체결 슬롯이 형성되어, 상기 코너 플레이트의 일측 끝단부에 타측 끝단부가 용접 고정되며, 일측 끝단부는 스트레이크의 타측 끝단부에 용접 고정되되, 텅의 타측 끝단부와 상기 텅의 양측면에 부착된 스트레이크의 측면 타측 끝단부는 상기 체결 슬롯에 삽입되어 횡 방향 주름에 용접 고정되는 것을 특징으로 한다.The present invention can increase the work efficiency by minimizing manual welding at the end of the cargo hold corners, and eliminate the stress concentration phenomenon caused by the discontinuous shape, 1, 2 of the cargo hold without applying a separate stress reduction structure In addition to preventing fatigue breakdown of the vehicle barrier, it also provides a strike end for cargo holds of membrane type LNG carriers that can absorb deformation in the longitudinal and transverse directions due to hull motion and heat shrinkage. . The hold end for the cargo hold of the membrane type LNG carrier is press-processed so that a plurality of transverse pleats are formed at a predetermined interval on one side, and fastening slots are formed from one end of the transverse pleats to one side of the transverse pleats, The other end is welded and fixed to one end of the corner plate, and one end is welded and fixed to the other end of the strike, the other end of the tongue and the other end of the side of the strake attached to both sides of the tongue Inserted into the fastening slot is characterized in that the welding fixed to the transverse pleats.

멤브레인, 화물창, 스트레이크 엔드, 스트레이크, 텅, GTA용접 Membrane, cargo hold, strike end, strike, tongue, GTA welding

Description

멤브레인형 액화천연가스 운반선의 화물창 제작용 스트레이크 엔드{Strake End for Reliable installation of the cargo containment of Membrane LNG Carriers}Strake End for Reliable installation of the cargo containment of Membrane LNG Carriers}

본 발명은 멤브레인형 액화천연가스 운반선의 화물창 제작용 스트레이크 엔드에 관한 것으로서, 보다 상세하게는 화물창의 1, 2차 방벽의 코너부를 형성하는 코너 플레이트와 스트레이크 엔드를 기밀을 유지할 수 있도록 서로 연결하는 멤브레인형 액화천연가스 운반선의 화물창 제작용 스트레이크 엔드에 관한 것이다.The present invention relates to a strike end for cargo hold fabrication of a membrane-type LNG carrier, and more particularly, to connect the corner plate and the strike end forming the corner portions of the primary and secondary barriers of the cargo hold to maintain airtightness. It relates to a strike end for the cargo hold of the membrane type LNG carrier.

이하, 도면을 참조하여 배경기술과 그 문제점에 대하여 설명하면 다음과 같다.Hereinafter, a background art and a problem thereof will be described with reference to the accompanying drawings.

일반적으로 멤브레인형 액화천연가스 운반선은 천연가스를 대량으로 운송하기 위하여 저온 액화 방법을 이용하고 있어 극저온의 액화천연가스를 저장 및 운송하는 화물창의 기밀성 및 안정성 확보가 매우 중요하다.In general, membrane type LNG carriers use a low temperature liquefaction method to transport large quantities of natural gas, so it is very important to secure the airtightness and stability of the cargo hold for storing and transporting cryogenic LNG.

특히, 멤브레인형 액화천연가스 운반선의 경우 화물창과 선체가 비 독립형이기 때문에 저장 용기인 화물창이 선체 운항 조건에 의해 수많은 변동 하중을 받을 뿐만 아니라 사용 기간 동안 수많은 액화천연가스 선적과 하역에 의한 열응력을 반복적으로 받기 때문에 화물창의 피로 강도 확보는 매우 중요하다.In particular, in the case of membrane type LNG carriers, since the cargo hold and the hull are non-independent, the cargo hold, which is a storage container, receives numerous fluctuating loads due to the hull's operating conditions, and the thermal stress caused by the loading and unloading of the LNG during use. It is important to ensure the fatigue strength of the cargo hold because it is repeatedly received.

도 1은 종래의 멤브레인형 액화천연가스 운반선의 인바 합금으로 제작되는 1 또는 2차 방벽의 화물창 코너부에서 텅과 스트레이크 끝단부를 마감하는 과정을 설명하기 위한 도면이다.1 is a view for explaining a process of closing the tongue and the end of the end of the cargo hold corner of the primary or secondary barrier made of Invar alloy of the conventional membrane-type LNG carrier.

도 1을 참조하면, 화물창 코너부의 코너 플레이트(도시되지 않음)와 스트레이크(Strake : 11)를 연결하는 종래의 스트레이크 엔드(Strake End : 10)는 양측 끝단부가 상부 방향으로 절곡되어 측면부(100)를 형성하며, 상기 측면부(100)의 전방부는 전방부에서 후방부 방향으로 갈수록 상향 경사지도록 형성된다.Referring to FIG. 1, a conventional brake end 10 connecting a corner plate (not shown) of a cargo hold corner part and a strike 11 may be formed at both side ends thereof and bent upwards. ), And the front portion of the side portion 100 is formed to be inclined upward from the front portion toward the rear portion.

상기와 같이 형성된 스트레이크 엔드(10)는 상기 측면부(100)의 후방부 끝단에서부터 전방부 방향으로 일정길이 만큼은 양측으로 벌어질 수 있도록 제외한 후 서로 인접하는 측면부(100)를 서로 용접하여 다수개를 연결한다.The strike end 10 formed as described above is separated from the rear end of the side part 100 so as to be extended to both sides by a predetermined length in the direction of the front side, and then a plurality of adjacent side parts 100 are welded to each other. Connect.

또한, 스트레이크(11)는 텅(Tongue : 12)의 양측면에 자동 저항 용접을 통해 접합하여 다수개를 연결한다.In addition, the strike 11 is joined to both sides of the tongue (12) through automatic resistance welding to connect a plurality of.

상기와 같이 텅(12)의 양측면에 스트레이크(11)를 접합한 다음에는 상기 텅(12)의 전방부와 서로 부착된 한 쌍의 스트레이크(11)의 양측면의 전방부를 상기 한 쌍의 스트레이크 엔드(10)의 용접이 되지 않은 서로 인접한 측면부(100) 후방에 삽입을 한 후, 스트레이크 엔드(10)의 후방부와 스트레이크(11)의 전방부를 수동으로 용접하여 고정시키며, 서로 부착된 한 쌍의 스트레이크(11)의 측면부(100)의 상단의 중앙부에서부터 서로 부착된 한 쌍의 스트레이크 엔드(10)의 측면부(100) 상 단의 전방부 끝단까지 수동 용접하여 기밀성을 확보하도록 한다.After joining the strikes 11 to both sides of the tongue 12 as described above, the front portions of both sides of the pair of strikes 11 attached to the front portion of the tongue 12 and the pair of streaks 11 After the rake end 10 is inserted into the rear side of the non-welded side portions 100, the rear portion of the strike end 10 and the front portion of the strike 11 are manually welded and fixed to each other. Manual welding from the center of the upper end of the side portion 100 of the pair of strike 11 to the front end of the upper end of the side portion 100 of the pair of strike ends 10 attached to each other to ensure airtightness do.

그러나, 상기와 같은 종래의 스트레이크 엔드(10)를 사용하여 화물창의 코너부를 마감할 경우에는 많은 양의 수동 용접으로 작업 시간이 매우 많이 소요된다는 문제점이 있었다.However, when the corner portion of the cargo hold is closed using the conventional strike end 10 as described above, there is a problem that a large amount of manual welding takes a very long time.

또한, 스트레이크 엔드(10)의 측면부(100) 형상이 불연속적으로 형성될 뿐만 아니라 이로 인하여 용접부의 형상 또한 불연속적으로 형성됨으로써 스트레이크 엔드(10)의 전방부 끝단에 응력이 집중되는 현상이 발생되어 금속으로 제작되는 1, 2차 방벽의 피로 수명이 저하되는 문제점이 있었다.In addition, the shape of the side part 100 of the strike end 10 is not only discontinuously formed, and as a result, the shape of the weld is also discontinuously, so that a phenomenon in which stress is concentrated at the front end of the strike end 10 may occur. There was a problem in that the fatigue life of the primary and secondary barriers produced and made of metals are reduced.

그리하여 상기 1, 2차 방벽의 피로 수명을 향상시키기 위해서는 별도의 응력 저감 구조가 필요하게 됨으로써 화물창의 제작시간 및 제작비용이 증가된다는 문제점이 있었다.Thus, in order to improve the fatigue life of the primary and secondary barriers, a separate stress reduction structure is required, thereby increasing the production time and manufacturing cost of the cargo hold.

따라서 본 발명의 목적은, 화물창 코너부의 마감 시에 수동 용접부위를 최소화하여 작업효율을 상승시킬 수 있으며, 불연속적인 형상에 의해 발생되는 응력 집중 현상을 제거하여 별도의 응력 저감 구조를 적용함 없이 화물창의 1, 2차 방벽의 피로 파괴현상을 방지할 수 있도록 함과 동시에, 선체 운동 및 열 수축에 의한 종 방향 및 횡 방향의 변형까지도 흡수할 수 있는 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드를 제공하는 것이다.Accordingly, an object of the present invention is to minimize the manual welding area at the end of the cargo hold corner to increase the work efficiency, to eliminate the stress concentration phenomenon caused by the discontinuous shape cargo hold without applying a separate stress reduction structure The end of cargo hold of membrane type LNG carriers that can prevent fatigue failure of primary and secondary barriers and absorb even longitudinal and transverse deformations due to hull motion and heat shrinkage. To provide.

상기 목적을 달성하기 위한 본 발명은, 텅의 양측면에 부착된 스트레이크와 코너 플레이트를 서로 연결하는 스트레이크 엔드에 있어서, 상기 스트레이크 엔드는, 일측에 다수개의 횡 방향 주름이 일정간격으로 형성되도록 프레스 가공되며, 일측 끝단부에서부터 상기 횡 방향 주름의 일측단까지는 체결 슬롯이 형성되어, 상기 코너 플레이트의 일측 끝단부에 타측 끝단부가 용접 고정되며, 일측 끝단부는 스트레이크의 타측 끝단부에 용접 고정되되, 텅의 타측 끝단부와 상기 텅의 양측면에 부착된 스트레이크의 측면 타측 끝단부는 상기 체결 슬롯에 삽입되어 횡 방향 주름에 용접 고정되는 것을 특징으로 하는 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드를 제공하는 것이다.The present invention for achieving the above object, in the strike end connecting the corner plate and the strike attached to both sides of the tongue, the strike end, so that a plurality of transverse wrinkles on one side are formed at regular intervals Press working, the fastening slot is formed from one end to the one end of the transverse corrugation, the other end is welded fixed to one end of the corner plate, one end is welded fixed to the other end of the strike , The other end of the tongue and the other end of the side of the strike attached to both sides of the tongue is inserted into the fastening slot and fixed to the cargo hold of the membrane type LNG carrier, characterized in that the weld end fixed to the transverse corrugation To provide.

여기서, 상기 스트레이크 엔드의 타측 끝단부와 상기 횡 방향 주름의 타측 끝단부 사이에는 스트레이크 엔드의 종 방향 주름이 더 형성될 수 있다.Here, a longitudinal wrinkle of the strike end may be further formed between the other end of the strike end and the other end of the lateral wrinkle.

이상, 상술한 바와 같이 본 발명에 따른 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드는, 화물창의 1, 2차 방벽의 기밀성 유지를 위한 마감 처리를 위해 스트레이크 및 텅과의 결합부위에 수행되던 수동 용접량을 줄임으로써 화물창의 1, 2차 방벽의 제작 공기를 단축시킬 수 있어 작업 및 생산효율을 대폭 향상시킬 수 있는 효과가 있으며, 스트레이크 엔드에서 횡 방향 끝단부의 용접부를 제거함과 동시에 형상 불연속에 의해 발생하는 응력 집중을 제거함으로써 화물창의 1, 2차 방벽의 신뢰성과 내구성을 향상시킬 수 있는 효과가 있을 뿐만 아니라, 횡 방향 주름과 종 방향 주름을 구비함으로써 선체 운동 및 열 수축에 의한 1, 2차 방벽의 횡 방향 및 종 방향의 변형까지도 흡수할 수 있도록 하는 효과가 있어 매우 유용한 발명인 것이다.As described above, the end of the cargo hold for the membrane-type LNG carrier according to the present invention, as described above, is carried out on the coupling portion of the strike and the tongue for the finishing treatment for maintaining the airtightness of the primary and secondary barrier of the cargo hold. By reducing the amount of manual welding used, the production air of the primary and secondary barriers of the cargo hold can be shortened, which greatly improves the work and production efficiency. By eliminating the stress concentration caused by discontinuity, it is not only effective to improve the reliability and durability of the primary and secondary barriers of the cargo hold, but also by the lateral and longitudinal pleats, In addition, the invention is very useful because it has the effect of absorbing the deformation in the transverse and longitudinal directions of the secondary barrier.

이하, 첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다. 설명의 편의를 위하여 종래의 화물창을 구성하는 요소와 동일 유사한 부분에 있어서는 동일한 도면 부호를 부여하였다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, the same reference numerals are given to the same parts as those of the elements constituting the conventional cargo hold.

도 2는 본 발명에 따른 스트레이크 엔드를 사용하여 코너 플레이트와 텅에 의해 부착된 한 쌍의 스트레이크가 연결된 상태를 도시한 도면이며, 도 3은 본 발 명에 따른 스트레이크 엔드와 스트레이크 및 텅의 분해 사시도이고, 도 4는 본 발명에 따른 스트레이크 엔드에 스트레이크와 텅을 체결하는 과정을 설명하기 위한 사시도이며, 도 5는 도 2의 A의 상세도이다.2 is a view illustrating a state in which a pair of strikes attached by a corner plate and a tongue are connected using a strike end according to the present invention, and FIG. 3 illustrates a strike end and a strike according to the present invention; 4 is an exploded perspective view of the tongue, FIG. 4 is a perspective view for explaining a process of fastening the tongue with the strike end according to the present invention, and FIG. 5 is a detailed view of A of FIG.

도 2 내지 도 5를 참조하면, 본 발명에 따른 멤브레인형 액화천연가스 운반선의 화물창 제작용 스트레이크 엔드(10)는, 도면에는 횡 방향 주름(101)이 한개만 형성되도록 도시하였으나 이에 한정되는 것이 아니고 화물창의 크기에 따라 일측에 스트레이크 엔드(10)의 좌우 길이 방향으로 다수개의 횡 방향 주름(101)이 스트레이크(11)의 상하 폭과 상응하는 거리만큼 이격되도록 형성되며, 타측 끝단부와 상기 횡 방향 주름(101)의 타측 끝단부 사이에는 스트레이크 엔드(10)의 상하 폭 방향으로 종 방향 주름(102)이 형성되도록 프레스 가공되어 형성된다.2 to 5, the end of the cargo hold for the membrane-shaped LNG carriers according to the present invention for the end of the cargo hold 10 is shown in the drawing so that only one transverse wrinkle 101 is formed, but is not limited thereto. Rather, a plurality of transverse corrugations 101 are formed to be spaced apart from each other by a distance corresponding to the vertical width of the strike 11 in one side of the strike end 10 according to the size of the cargo hold. Between the other end of the transverse pleat 101 is formed by pressing to form a longitudinal pleat 102 in the vertical width direction of the strike end 10.

또한, 상기 스트레이크 엔드(10)의 일측 끝단부에서부터 상기 횡 방향 주름(101)의 일측단까지는 체결 슬롯(103)이 형성된다.In addition, a fastening slot 103 is formed from one end of the strike end 10 to one end of the transverse corrugation 101.

상기와 같이 구성된 본 발명에 따른 스트레이크 엔드(10)는 코너 플레이트(13)의 일측 끝단부에 타측 끝단부가 용접되며, 일측 끝단부는 텅(12)의 양측면에 측면(110) 부착된 스트레이크(11)의 타측 끝단부에 용접 고정되되, 상기 텅(12)의 타측 끝단부와 텅(12)의 양측면에 부착된 한 쌍의 스트레이크(11)의 측면(110) 타측 끝단부는 스트레이크 엔드(10)에 형성된 체결 슬롯(103)에 삽입되어 횡 방향 주름(101)에 용접 고정된다.Strike end 10 according to the present invention configured as described above is welded to one end of the other end of the corner plate 13, the one end is a side of the side (110) attached to both sides of the tongue (12) 11 is welded to the other end of the other end, the other end of the tongue 12 and the other end of the side end 110 of the pair of brakes 11 attached to both sides of the tongue 12 is the strike end ( It is inserted into the fastening slot 103 formed in 10 and welded to the transverse pleats 101.

다시, 도 2 내지 도 5를 참조하여 본 발명에 따른 스트레이크 엔드를 사용하 여 코너 플레이트와 텅 및 한 쌍의 스트레이크를 연결하는 과정과 작용 효과에 대하여 설명하면 다음과 같다.Referring back to Figures 2 to 5 will be described with respect to the process and the effect of connecting the corner plate and the tongue and a pair of strike using the strike end according to the present invention.

도 2 내지 도 5를 참조하면, 먼저 본 발명에 따른 스트레이크 엔드를 사용하여 코너 플레이트(13)와 텅(12) 및 스트레이크(11)를 연결하기 위해서는 텅(12)의 양측면에 스트레이크(11)의 측면(110)을 GTA(Gas Tungsten Arc) 용접하여 고정시킨다.2 to 5, first, in order to connect the corner plate 13, the tongue 12, and the strike 11 using the strike end according to the present invention, the strikes are formed on both sides of the tongue 12. The side 110 of 11) is fixed by welding with gas tungsten arc (GTA).

상기와 같이 텅(12)의 양측면에 스트레이크(11)의 측면(110)을 용접 고정시킨 다음에는, 텅(12)의 양측면에 부착된 스트레이크(11)의 상부면이 스트레이크 엔드(10)의 하부면과 접하도록 단차진 텅(12)의 타측 끝단부와 상기 텅(12)의 양측면에 부착된 스트레이크(11)의 측면(110) 타측 끝단부를 스트레이크 엔드(10)의 일측 끝단부에서부터 횡 방향 주름(101)의 일측단까지 형성된 체결 슬롯(103)에 삽입하여 체결한다.After welding the sides 110 of the strike 11 to both sides of the tongue 12 as described above, the upper surface of the strike 11 attached to both sides of the tongue 12 is the strike end 10 The other end of the stepped tongue 12 and the other end of the side surface 110 of the strike 11 attached to both sides of the tongue 12 so as to contact the lower surface of the one end of the strike end 10. It is fastened by inserting it into the fastening slot 103 formed from one side end of the transverse corrugation 101 from the part.

상기와 같이 스트레이크 엔드(10)의 일측 끝단부에서부터 횡 방향 주름(101)의 일측단까지 형성된 체결 슬롯(103)에 단차진 텅(12)의 타측 끝단부와 상기 텅(12)의 양측면에 부착된 스트레이크(11)의 측면(110) 타측 끝단부를 삽입하여 체결한 다음에는, 상기 체결 슬롯(103)에 삽입된 텅(12)의 타측 끝단부를 횡 방향 주름(101)에 GTA 용접하여 고정시킨 다음, 스트레이크(11)의 타측 끝단부를 스트레이크 엔드(10)의 일측 끝단부에 GTA 용접하여 고정시킨다.As described above, the other end of the tongue 12 is stepped on the fastening slot 103 formed from one end of the strike end 10 to one end of the transverse corrugation 101 and both sides of the tongue 12. After inserting and fastening the other end of the side 110 of the attached strike 11, the other end of the tongue 12 inserted into the fastening slot 103 is fixed by GTA welding to the transverse corrugation 101. Next, the other end of the strike 11 is fixed by GTA welding to one end of the strike end 10.

상기와 같이 스트레이크 엔드(10)의 일측 끝단부에 스트레이크(11)와 텅(12)을 용접 고정시킨 다음에는, 상기 스트레이크 엔드(10)의 타측 끝단부를 코너 플레 이트(13)의 일측 끝단부에 GTA 용접하여 고정시킨다.After welding the strake 11 and the tongue 12 to one end of the strike end 10 as described above, the other end of the strike end 10 is one side of the corner plate 13. Fix by GTA welding on the end part.

상술한 바와 같이 본 발명에 따른 스트레이크 엔드(10)와 스트레이크(11) 및 텅(12)을 결합할 시에는 수동 용접으로 마감을 하게 되는데, 상기와 같은 수동 용접부는 스트레이크 엔드(10)의 체결 슬롯(103)과 텅(12)의 타측 끝단부를 결합시키는 GTA 용접부와, 한 쌍의 스트레이크(11)를 텅(12)의 양측면에 결합시키는 GTA 용접부, 스트레이크 엔드(10)의 일측 끝단부와 스트레이크(11)의 타측 끝단부를 결합시키는 랩(Lap) 용접부와 같이 3개소의 국부적인 영역에서만 수동 GTA 용접이 수행됨으로써 종래의 스트레이크 엔드를 사용할 경우에 비하여 수동 용접량을 줄일 수 있어 금속재 박판으로 제작되는 액화천연가스 운반선 화물창의 단열 시스템의 1차 방벽과 2차 방벽의 코너부를 제작하는 시간을 대폭 절감할 수 있어 생산 효율을 향상시킬 수 있도록 한다.As described above, when the strike end 10 and the strike 11 and the tongue 12 according to the present invention are combined, the finish is performed by manual welding. Such a passive welding part may include the strike end 10. GTA welding part for coupling the fastening slot 103 of the tongue 12 and the other end of the tongue 12, GTA welding part for coupling a pair of the strike 11 to both sides of the tongue 12, one side of the strike end 10 Manual GTA welding is performed only in three local areas, such as a lap weld that joins the end and the other end of the strike 11, thereby reducing the amount of manual welding compared to using a conventional strike end. Therefore, it is possible to drastically reduce the time required to manufacture the corners of the primary barrier and the secondary barrier of the insulation system of the LNG carrier cargo hold, which is manufactured from thin metal plates, thereby improving production efficiency.

또한, 스트레이크(11)의 측면 타측 끝단부와 텅(12)의 타측 끝단부가 삽입되는 체결 슬롯(103)의 일부가 형성되며, 상기 스트레이크(11)의 측면 타측 끝단부와 텅(12)의 타측 끝단부가 용접 고정되는 부위인 횡 방향 주름(101)이 프레스 가공되어 라운드 되도록 형성되며 스트레이크 엔드(10)와 일체로 형성됨으로써 스트레이크 엔드(10)에서 횡 방향 끝단부의 용접부를 제거함과 동시에 형상 불연속에 의해 발생하는 응력 집중을 제거함으로써 별도의 응력 저감 구조를 구비함 없이 화물창의 1, 2차 방벽의 피로 파괴현상을 방지할 수 있다.In addition, a part of the fastening slot 103 into which the other end of the side of the strike 11 and the other end of the tongue 12 is inserted is formed, and the other end of the side of the strike 11 and the tongue 12 are formed. The other end portion of the transverse pleats 101, which are welded and fixed, are formed to be pressed and rounded, and are integrally formed with the strike end 10 to remove the welded portion of the transverse end portion from the strike end 10. By eliminating the stress concentration caused by the shape discontinuity, it is possible to prevent fatigue failure of the primary and secondary barriers of the cargo hold without having a separate stress reducing structure.

또한, 본 발명에 따른 스트레이크 엔드(10)는 횡 방향 주름(101)과 종 방향 주름(102)을 구비함으로써 선체 운동 및 열 수축에 의한 횡 방향 및 종 방향의 변 형까지도 흡수할 수 있도록 한다.In addition, the strike end 10 according to the present invention is provided with a transverse corrugation 101 and a longitudinal corrugation 102 to be able to absorb even transverse and longitudinal deformation due to the hull motion and heat shrinkage. .

본 발명은 상술한 특정의 바람직한 실시예에 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.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

도 1은 종래의 멤브레인형 액화천연가스 운반선의 인바 합금으로 제작되는 1 또는 2차 방벽의 화물창 코너부에서 텅과 스트레이크 끝단부를 마감하는 과정을 설명하기 위한 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining the process of closing the tongue and the end of the end of the cargo hold corner of the primary or secondary barrier made of Invar alloy of the conventional membrane type LNG carrier.

도 2는 본 발명에 따른 스트레이크 엔드를 사용하여 코너 플레이트와 텅에 의해 부착된 한 쌍의 스트레이크가 연결된 상태를 도시한 도면.2 is a diagram illustrating a state in which a pair of strikes attached by a corner plate and a tongue are connected by using a strike end according to the present invention.

도 3은 본 발명에 따른 스트레이크 엔드와 스트레이크 및 텅의 분해 사시도.Figure 3 is an exploded perspective view of the strike end and the strike and the tongue according to the present invention.

도 4는 본 발명에 따른 스트레이크 엔드에 스트레이크와 텅을 체결하는 과정을 설명하기 위한 사시도.Figure 4 is a perspective view for explaining the process of fastening the tongue and the strike on the strike end according to the present invention.

도 5는 도 2의 A의 상세도.FIG. 5 is a detail view of A of FIG. 2; FIG.

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

(10) : 스트레이크 엔드(Strake End) (11) : 스트레이크(Strake)(10): Stroke End (11): Stroke

(12) : 텅(Tongue) (13) : 코너 플레이트(12) Tongue (13): Corner plate

(101) : 횡 방향 주름 (102) : 종 방향 주름101: transverse wrinkles 102: longitudinal wrinkles

(103) : 체결 슬롯103: fastening slot

Claims (2)

텅의 양측면에 부착된 스트레이크와 코너 플레이트를 서로 연결하는 스트레이크 엔드에 있어서,In the strike end connecting the strike plate and the corner plate attached to both sides of the tongue, 상기 스트레이크 엔드는, 일측에 프레스 가공에 의해 스트레이크 엔드와 불연속 되지 않고 일체로 이루어지면서 라운드 되도록 형성되는 횡 방향 주름이 일정간격으로 다수개 형성됨으로써 응력집중 현상이 제거되어 피로 파괴 현상을 방지해주고, The strike end is formed by forming a plurality of lateral wrinkles formed at a predetermined interval so as to be integrally formed without being discontinuous with the strike end by press working on one side, so that stress concentration is eliminated to prevent fatigue fracture. , 스트레이크 엔드의 일측 끝단부에서부터 상기 횡 방향 주름의 일측단까지는 체결 슬롯이 형성되어, 상기 코너 플레이트의 일측 끝단부에 스트레이크 엔드의 타측 끝단부가 용접 고정되며,A fastening slot is formed from one end of the strike end to one end of the transverse corrugation, and the other end of the strike end is welded and fixed to one end of the corner plate. 스트레이크 엔드의 일측 끝단부는 스트레이크의 타측 끝단부에 용접 고정되되, 텅의 타측 끝단부와 상기 텅의 양측면에 부착된 스트레이크의 측면 타측 끝단부는 상기 체결 슬롯에 삽입되어 횡 방향 주름에 용접 고정되는 것을 특징으로 하는 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드.One end of the strike end is welded and fixed to the other end of the strike, and the other end of the tongue and the other end of the side of the strike attached to both sides of the tongue are inserted into the fastening slot to weld weld to the transverse pleats. Stroke end for cargo hold of the membrane-type LNG carrier. 청구항 제 1 항에 있어서,The method according to claim 1, 상기 스트레이크 엔드의 타측 끝단부와 상기 횡 방향 주름의 타측 끝단부 사이에는 종 방향 주름이 더 형성되는 것을 특징으로 하는 멤브레인형 액화천연가스 운반선의 화물창용 스트레이크 엔드.The end of the strike end of the cargo end of the membrane type LNG carrier, characterized in that the longitudinal wrinkles are further formed between the other end and the other end of the transverse pleats.
KR1020090056564A 2009-06-24 2009-06-24 Strake End for Reliable installation of the cargo containment of Membrane LNG Carriers KR101144397B1 (en)

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KR102638283B1 (en) * 2018-12-27 2024-02-20 한화오션 주식회사 Insulation structure at corner of liquefied natural gas storage tank
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