KR20110034824A - Horizontally extended spherical type lng tank with multi-curvature surfaces - Google Patents

Horizontally extended spherical type lng tank with multi-curvature surfaces Download PDF

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Publication number
KR20110034824A
KR20110034824A KR1020090092271A KR20090092271A KR20110034824A KR 20110034824 A KR20110034824 A KR 20110034824A KR 1020090092271 A KR1020090092271 A KR 1020090092271A KR 20090092271 A KR20090092271 A KR 20090092271A KR 20110034824 A KR20110034824 A KR 20110034824A
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South Korea
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tank
lng storage
curvature
horizontally extended
radius
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KR1020090092271A
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Korean (ko)
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김영범
박진수
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현대중공업 주식회사
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Priority to KR1020090092271A priority Critical patent/KR20110034824A/en
Publication of KR20110034824A publication Critical patent/KR20110034824A/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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • 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
    • 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
    • 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

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

Abstract

PURPOSE: A horizontally extended LNG(Liquefied Natural Gas) tank with multiple curve surfaces is provided to increase the storage capacity of an LNG tank and reduce stress concentration on welded parts. CONSTITUTION: A horizontally extended LNG tank with multiple curve surfaces comprises tank parts(20,30) which are symmetrically installed on the right and left sides and have specified curvatures and a horizontal connecting tank part(40) which is installed between the tank parts in order to increase the storage capacity of the LNG tank. The horizontal connecting tank part is formed of two or more arcs with different curvatures that are successively connected from the tank parts.

Description

다중곡면을 갖는 수평연장 ＬＮＧ 저장탱크{Horizontally Extended Spherical Type LNG Tank With Multi-curvature Surfaces}Horizontally Extended Spherical Type LNG Tank With Multi-curvature Surfaces

본 발명은 다중곡면을 갖는 수평연장 LNG 저장탱크에 관한 것으로,탱크부의 곡률반경인 R1보다 큰 곡률반경인 Rn를 탱크 길이 방향의 곡률반경으로 하는 수평연결탱크부를 이용하여 한 쌍의 탱크부를 연결해줌으로써 연결부분에 응력집중을 완화함과 동시에 LNG 저장용량을 증대시킬 수 있는 다중곡면을 갖는 수평연장 LNG 저장탱크에 관한 것이다.The present invention relates to a horizontally extended LNG storage tank having a multi-curved surface, a pair of tanks by using a horizontal connection tank having a radius of curvature R n larger than the radius of curvature R 1 of the tank portion as a radius of curvature in the longitudinal direction of the tank. The present invention relates to a horizontally extended LNG storage tank having a multi-curved surface that can reduce the stress concentration at the connecting portion and increase the LNG storage capacity by connecting.

일반적으로 LNG 운반선에 탑재되는 구형 LNG 저장탱크는 선박의 조종시선을 방해 하지 않은 범위 내에서 보다 많은 LNG를 적재할 수 있도록 설계되어야 한다. In general, older LNG storage tanks mounted on LNG carriers should be designed to allow the loading of more LNG within a range that does not interfere with the ship's view.

이러한 LNG 저장탱크는 수직방향으로 확장되도록 설치되는 수직연장 LNG 저장탱크와, 수평방향으로 확장되어 LNG 저장용량이 증대되도록 하는 수평연장 LNG 저장탱크를 포함하여 구성된다.The LNG storage tank is configured to include a vertically extended LNG storage tank that is installed to extend in the vertical direction, and a horizontally extended LNG storage tank that extends in the horizontal direction to increase the LNG storage capacity.

여기서 상기 수평연장 LNG 저장탱크(10)는 도 1 에서와 같이 곡률반경 R1을 가지고 반구형태로 형성되어 좌,우 대칭되도록 설치되는 한 쌍의 탱크부(20)(30)와, 상기 탱크부(20)(30) 사이에 설치되어 LNG저장용량이 증대되도록 하는 수평연결탱크부(41)를 포함하여 구성된다.The horizontally extended LNG storage tank 10 is a pair of tanks 20, 30 and formed in a hemispherical shape having a radius of curvature R 1 and installed symmetrically left and right, as shown in FIG. It is configured to include a horizontal connection tank 41 is installed between the (20), 30 so that the LNG storage capacity is increased.

상기 수평연결탱크부(41)는 지름 D를 가지고 수평연장 LNG 저장탱크(10)의 탱크 길이 방향으로 확장되는 원통형태의 구조이다.The horizontal connection tank part 41 has a diameter D and has a cylindrical shape extending in the longitudinal direction of the tank of the horizontally extending LNG storage tank 10.

이러한 수평연결탱크부(41)는 반구형태의 탱크부(20)(30)에 원통형태의 수평연결탱크부(41)를 연결함으로써 LNG 저장용량이 수평적으로만 증가되어 증가용량이 제한되는 문제점이 있다.The horizontal connection tank part 41 is connected to the horizontal connection tank part 41 of the cylindrical shape to the hemispherical tank portion 20, 30 is a problem that the LNG storage capacity is increased only horizontally and the increase capacity is limited. There is this.

또한 구 형태로 형성되는 탱크부(20)(30)와 원통형태로 형성되는 수평연결탱크부(41)의 이음부위에 응력집중 현상이 발생되는 문제점이 있다.In addition, there is a problem that a stress concentration phenomenon occurs in the joint portion of the tank portion 20, 30 formed in a spherical shape and the horizontal connection tank portion 41 formed in a cylindrical shape.

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, LNG 운반선에 탑재되는 수평연장 LNG 저장탱크에 있어, 한 쌍의 탱크부와 상기 탱크부를 연결하는 수평연결탱크부의 이음부를 완만한 곡선형태로 형성하여 응력집중현상을 완화시켜 줌과 동시에 LNG 저장용량을 증가시킬 수 있는 다중곡면을 갖는 수평연장 LNG 저장탱크를 제공함에 있다.An object of the present invention for solving the above problems, in the horizontally extended LNG storage tank mounted on the LNG carrier, the joint portion of the horizontal connection tank portion connecting the tank portion and the tank portion is formed in a gentle curve shape The present invention provides a horizontally extended LNG storage tank having a multi-curved surface that can alleviate stress concentration and increase LNG storage capacity.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은, 곡률반경 R1을 가지고 좌,우 대칭되도록 설치되는 탱크부와, 상기 탱크부 사이에 설치되어 LNG저장용량이 증대되도록 하는 수평연결탱크부를 포함하여 구성되는 수평연장 LNG 저장탱크에 있어서, 상기 수평연결탱크부는, 2개 이상의 서로 다른 곡률반경 R2, ,.., Rn-1, Rn을 가지는 원호가 탱크부에서부터 연속적으로 접하여 형성되되, 상기 R2, ..., Rn-1, Rn는 R1<R2, ...,<Rn으로 이루어지고, 상기 R2, ... ,Rn-1 은 수평연결탱크부를 수직방향으로 가로지르는 중심선과 만나지 않으며, Rn은 중심선과 만나는 것을 특징으로 한다.The present invention to achieve the object as described above and to perform the problem for eliminating the conventional defects, the tank unit is installed so as to be symmetrical left and right with a radius of curvature R 1 , LNG storage capacity installed between the tank unit In the horizontally extended LNG storage tank comprising a horizontal connection tank portion to increase the, wherein the horizontal connection tank portion, circular arc having two or more different radius of curvature R 2 ,, .., R n-1 , R n Is formed in continuous contact with the tank portion, wherein R 2 , ..., R n-1 , R n is formed of R 1 <R 2, ..., <R n , wherein R 2 , ... , R n-1 does not meet the center line crossing the horizontal connection tank in the vertical direction, R n is characterized in that meets the center line.

또한 상기 곡률반경 R2, ..., Rn-1, Rn갖는 원호는 선단에 위치한 원호의 중심 점을 지나도록 구성되는 것을 특징으로 한다.In addition, the radius of curvature R 2 , ..., R n-1 , R n is characterized in that configured to pass through the center point of the arc located at the tip.

이상에서 설명한 바와 같이 본 발명에 의하면, 수평연결탱크부를 다중곡면을 갖도록 형성함으로써 LNG 저장탱크의 저장용량을 증대시킴과 더불어 한 쌍의 탱크부와 연결되는 이음부위가 완만한 곡률로 연결되어 LNG 저장탱크의 온도, 자중 및 액체 화물에 의한 용접이음부의 응력집중을 완화할 수 있는 매우 유용한 발명이다. As described above, according to the present invention, the horizontal connection tank portion is formed to have a multi-curved surface to increase the storage capacity of the LNG storage tank, and the joint portion connected to the pair of tank portions is connected with a gentle curvature to store the LNG. It is a very useful invention that can alleviate the stress concentration of the welded joint due to the temperature of the tank, its own weight and liquid cargo.

이하 본 발명의 실시 예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다. 또한 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

도 2 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 사시도, 도 3 은 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 측면도, 도 4 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 정면도, 도 5 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크의 확장 구조를 나타낸 예시도, 도 6 은 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크의 연장길이가 동일한 상태에서 최대응력의 변화 분포를 나타낸 예시도로서, 2 is a perspective view showing a horizontal extended LNG storage tank according to an embodiment of the present invention, Figure 3 is a side view showing a horizontal extended LNG storage tank according to an embodiment of the present invention, Figure 4 is an embodiment of the present invention 5 is a front view showing a horizontally extended LNG storage tank, Figure 5 is an exemplary view showing an expansion structure of a horizontally extended LNG storage tank according to an embodiment of the present invention, Figure 6 is a horizontally extending LNG storage according to an embodiment of the present invention This is an exemplary view showing the change distribution of the maximum stress in the same extension length of the tank.

본 발명에 의한 수평연장 LNG 저장탱크(10)는 곡률반경 R1을 가지고 좌,우 대칭되도록 설치되는 한 쌍의 탱크부(20)(30)와, 상기 탱크부(20)(30) 사이에 설치되어 LNG저장용량이 증대되도록 하되, 상기 탱크부(20)(30)의 곡률반경인 R1보다 큰 길이를 가지는 R2를 곡률반경으로 하여 탱크 길이 방향으로 형성되는 수평연결탱크부(40)를 포함하여 구성되고, 둘레를 따라 설치되는 지지스커트(50)를 통해 선체에 지지된다.Horizontally extending LNG storage tank 10 according to the present invention has a radius of curvature R 1 between a pair of tanks 20, 30 are installed so as to be symmetrical, between the tanks 20, 30 Horizontal connection tank 40 is installed in the tank length direction to be installed to increase the LNG storage capacity, but R 2 having a length larger than the radius of curvature R 1 of the tank portion 20, 30 as a radius of curvature. It is configured to include, is supported on the hull through a support skirt 50 is installed along the circumference.

이러한 수평연장 LNG 저장탱크(10)의 구조를 도 5를 통해 보다 상세히 설명하면, O, O'를 중심으로 반경이 R1인 제1원호(21)에 의해 형성하는 한 쌍의 탱크부(20)(30)와, 상기 반경 R1보다 큰 반경 R2를 가지는 원호로서 일측 탱크부(20)의 구면 외부에 일단이 용접 연결되고 타측 탱크부(30)의 구면 외부에 타단이 용접 연결되어 탱크 길이 방향으로 형성되는 수평연결탱크부(40)로 구성된다.Referring to the structure of the horizontally extended LNG storage tank 10 in more detail with reference to Figure 5, a pair of tanks 20 formed by the first arc 21 having a radius R 1 around O, O ' 30 and a circular arc having a radius R 2 larger than the radius R 1 , one end of which is welded to the outside of the spherical surface of the tank 20, and the other end of the tank of the other side of the tank 30, which is welded to the outside. It consists of a horizontal connection tank 40 formed in the longitudinal direction.

상기 수평연결탱크부(40)의 반경 R2는 수평연결탱크부(40)의 중심점을 상하방향으로 가로지르는 중심라인인 선분AB의 어느 한 지점 J에서 상기 일측 탱크부(20)의 원호의 중심점 O를 지나 탱크부(20)의 원호, 즉 접점 E 점까지 연장되는 것으로, 수평연결탱크부(40)의 반경R2은 선분JE인 것이다.Radius R 2 of the horizontal connection tank portion 40 is the center point of the arc of the one side tank portion 20 at any point J of the line segment AB, which is a center line crossing the center point of the horizontal connection tank portion 40 in the vertical direction. It extends past O to the arc of the tank part 20, ie, the point of contact E, and the radius R 2 of the horizontal connection tank part 40 is a line segment JE.

또한 상기 타측 탱크부(30)와의 접점 G 는 상기 접점 E점과 수평연결탱크부(40)의 중심라인인 선분 AB를 기준으로 대칭인 지점에 위치함으로써, 상기 타측 탱크부(30)와 수평연결탱크부(40)는 접점 G상에서 접선 기울기가 동일하다.In addition, the contact point G with the other side tank part 30 is located at a point symmetrical with respect to the point E of the contact point E and the line segment AB which is the center line of the horizontal connection tank part 40, thereby making a horizontal connection with the other side tank part 30. The tank portion 40 has the same tangential slope on the contact G.

한편 접점 F는 수평연장 LNG 저장탱크(10)의 수평방향 중심축인 선분 CD를 기준으로 접점 E의 대칭 점이며, 접점 H는 수평연결탱크부(40)의 수평방향 중심라인인 선분 CD를 중심으로 접점 G의 대칭점이다.On the other hand, the contact point F is a symmetry point of the contact point E with respect to the line segment CD which is the horizontal central axis of the horizontally extending LNG storage tank 10, and the contact point H is centered on the line segment CD which is the horizontal center line of the horizontal connection tank part 40. This is the symmetry point of contact G.

결국 수평연장 LNG 저장탱크(10)의 일측 탱크부(20)는 원호EF(곡률반경 R1)이고, 타측 탱크부(30)는 원호 GH(곡률반경R1) 이며, 수평연결탱크부(40)는 원호EG(곡률반경 R2) 및 원호 FH(곡률반경 R2)이며, 수평연장 LNG 저장탱크(10)는 상기 원호들의 상호결합으로 구성된다.As a result, one side tank portion 20 of the horizontal extension LNG storage tank 10 is an arc EF (curvature radius R 1 ), the other side tank portion 30 is an arc GH (curvature radius R 1 ), the horizontal connection tank portion 40 ) Are circular arc EG (curvature radius R 2 ) and circular arc FH (curvature radius R 2 ), horizontally extending LNG storage tank 10 is composed of the mutual coupling of the arcs.

아울러 두 원호가 만나는 점E, F, H, G에서 두 원호는 접선의 기울기는 같다. 여기서 R2의 크기는 응력집중 완화 효과를 실질적으로 얻기 위해서 탱크 연장길이의 크기 및 R1과 R2의 비를 고려한 구조해석으로부터 결정할 수 있는데, 도 6과 8의 예시도와 같이 R1<R2<10R1의 범위에서 즉, R1/R2의 값이 0.1보다는 작은 범위에서 응력집중 완화 효과를 충분히 나타낼 수 있다.In addition, at the points E, F, H, and G where the two arcs meet, the tangents have the same slope. Where the R 2 sizes stress concentration relaxation effect the order substantially obtain a can be determined from the structural analysis sizes and R 1 of the tank extending length and taking into account the ratio of R 2, as an example to help of Figure 6 and 8 R 1 <R 2 In the range of <10R 1 , that is, in a range in which the value of R 1 / R 2 is less than 0.1, the stress concentration mitigating effect can be sufficiently exhibited.

한편 도 7 은 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크를 나타낸 측면도, 도 8 은 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크의 확장 구조를 나타낸 예시도, 도 9 는 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크의 최대응력 변화분포를 그래프로 나타낸 예시도로서, 수평연결탱크부(40)는 도면에서와 같이 곡률반경 R2를 가지며 탱크부와 접하는 제2원호(42)와, 곡률반경 R3를 가지며 제2원호(42)와 접하는 제3원호(43)를 포함하되, 상기 R2, R3은 R1<R2<R3으로 이루어지고, 상기 R2,R3 은 수평연결탱크부(40)를 수직방향으로 가로지르는 중심선인 선분 AB를 통과하지 않으며, R3은 중심선과 만난다. On the other hand Figure 7 is a side view showing a horizontal extended LNG storage tank according to another embodiment of the present invention, Figure 8 is an exemplary view showing an expansion structure of the horizontal extended LNG storage tank according to another embodiment of the present invention, Figure 9 As an exemplary diagram showing a maximum stress change distribution of the horizontally extended LNG storage tank according to another embodiment of the horizontal connection tank portion 40 has a radius of curvature R 2 , as shown in the drawing, the second circular arc ( 42) and a third arc 43 having a radius of curvature R 3 and contacting the second arc 42, wherein R 2 and R 3 are made of R 1 <R 2 <R 3 , and R 2 , R 3 does not pass through the line segment AB, which is the center line crossing the horizontal connection tank 40 in the vertical direction, and R 3 meets the center line.

한편 상기 제2원호(42)는 곡률반경 R2가 탱크부(20)의 중심점O 을 지나도록 구성되고, 상기 제3원호(43)의 곡률반경 R3은 상기 제2원호(42)의 중심점O1을 지나가도록 구성된다.Meanwhile, the second arc 42 is configured such that the radius of curvature R 2 passes through the center point O of the tank part 20, and the radius of curvature R 3 of the third arc 43 is the center point of the second arc 42. Configured to pass through O 1 .

즉 상기 제2원호(42)의 반경 R2는 선분 EO1이고 제3원호의 반경 R3은 선분 KO2이다 That is, the radius R 2 of the second arc 42 is a line segment EO 1 and the radius R 3 of the third arc is a line segment KO 2 .

여기서 상기 타측 탱크부(30)와의 접점 G, L 는 상기 접점 E, K점과 수평연결탱크부(40)의 중심라인인 선분 AB를 기준으로 대칭인 지점에 위치한다.Here, the contacts G and L with the other tank part 30 are located at symmetrical points with respect to the contact points E and K and the line segment AB which is the center line of the horizontal connection tank part 40.

또한 접점 F, M은 수평연장 LNG 저장탱크(10)의 수평방향 중심축인 선분 CD를 기준으로 접점 E, K의 대칭점이며, 접점 H, N은 수평연결탱크부(40)의 수평방향 중심라인인 선분 CD를 중심으로 접점 G, L의 대칭점이다.In addition, the contact point F, M is a symmetry point of the contact point E, K based on the line segment CD, which is the horizontal center axis of the horizontally extending LNG storage tank 10, and the contact point H, N is the horizontal center line of the horizontal connection tank part 40. It is the symmetry point of contacts G and L around the line segment CD.

이와 같은 본 발명은 탱크부(20)(30)의 반경R1 대비 연장길이가 상대적으로 클 경우 응력감소의 효과를 높이기 위하여 2개 이상의 서로 다른 곡률반경(R2, R3, R4, ..., Rn-1 ,Rn)에 의해 형성되는, 제2원호, 제3원호, 제4원호...제n-1원호 제n원호 를 포함한 다중곡면 연장부를 사용할 수 있다. The present invention as described above has two or more different radiuses of curvature R 2 , R 3 , R 4 , in order to increase the effect of stress reduction when the length of extension relative to the radius R 1 of the tank 20, 30 is relatively large. It is possible to use a multicurve extension comprising a second arc, a third arc, a fourth arc ... an n- th arc, and an n-th arc, which is formed by R n-1 , R n ).

이때 각 곡률반경의 크기는 R1<R2<R3<R4<...<Rn-1<Rn이고 각 원호가 만나는 위치에서의 접선 기울기는 서로 같다.At this time, the radius of curvature is R 1 <R 2 <R 3 <R 4 <... <R n-1 <R n and the tangent slopes at the positions where the arcs meet each other are the same.

본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.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 1 은 종래의 수평연장 LNG 저장탱크를 나타낸 예시도,1 is an exemplary view showing a conventional horizontally extended LNG storage tank,

도 2 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 사시도,2 is a perspective view showing a horizontal extended LNG storage tank according to an embodiment of the present invention,

도 3 은 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 측면도,Figure 3 is a side view showing a horizontal extended LNG storage tank according to an embodiment of the present invention,

도 4 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크를 나타낸 정면도,4 is a front view showing a horizontal extended LNG storage tank according to an embodiment of the present invention,

도 5 는 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크의 확장 구조를 나타낸 예시도,5 is an exemplary view showing an expansion structure of a horizontally extended LNG storage tank according to an embodiment of the present invention,

도 6 은 본 발명의 일실시예에 의한 수평연장 LNG 저장탱크의 최대응력 변화분포를 그래프로 나타낸 예시도,Figure 6 is an exemplary diagram showing a maximum stress change distribution of the horizontally extended LNG storage tank according to an embodiment of the present invention,

도 7 은 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크를 나타낸 측면도,7 is a side view showing a horizontal extended LNG storage tank according to another embodiment of the present invention,

도 8 은 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크의 확장 구조를 나타낸 예시도,8 is an exemplary view showing an expansion structure of a horizontally extended LNG storage tank according to another embodiment of the present invention,

도 9 는 본 발명의 다른 실시예에 의한 수평연장 LNG 저장탱크의 최대응력 변화분포를 그래프로 나타낸 예시도.9 is an exemplary diagram showing a maximum stress change distribution of the horizontally extended LNG storage tank according to another embodiment of the present invention.

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

(10) : LNG 저장탱크 (20)(30) : 탱크부10: LNG storage tank 20, 30 tank part

(21) : 제1원호 (40)(41) : 수평연결탱크부 (21): First arc (40) (41): Horizontal connection tank part

(42) : 제2원호 (43) : 제3원호 (42): Second arc (43): Third arc

(50) : 지지스커트(50): support skirt

Claims (2)

곡률반경 R1을 가지고 좌,우 대칭되도록 설치되는 탱크부와, 상기 탱크부 사이에 설치되어 LNG저장용량이 증대되도록 하는 수평연결탱크부를 포함하여 구성되는 수평연장 LNG 저장탱크에 있어서,In the horizontally extended LNG storage tank comprising a tank unit having a curvature radius R 1 symmetrically installed, and a horizontal connection tank unit installed between the tank unit to increase the LNG storage capacity, 상기 수평연결탱크부는, The horizontal connection tank portion, 2개 이상의 서로 다른 곡률반경 R2, ,.., Rn-1, Rn을 가지는 원호가 탱크부에서부터 연속적으로 접하여 형성되되, Circular arcs having two or more different radii of curvature R 2 , .., R n-1 , R n are formed in continuous contact from the tank part, 상기 R2, ..., Rn-1, Rn는 R1<R2, ...,<Rn으로 이루어지고, 상기 R2, ... ,Rn-1 은 수평연결탱크부를 수직방향으로 가로지르는 중심선과 만나지 않으며, Rn은 중심선과 만나는 것을 특징으로 하는 다중곡면을 갖는 수평연장 LNG 저장탱크.The R 2 , ..., R n-1 , R n is composed of R 1 <R 2, ..., <R n , wherein the R 2 , ..., R n-1 is a horizontal connection tank A horizontally extended LNG storage tank having a multi-curve, characterized in that it does not meet a centerline crossing in a vertical direction, and R n meets a centerline. 제 1 항에 있어서,The method of claim 1, 상기 곡률반경 R2, ..., Rn-1, Rn갖는 원호는 선단에 위치한 원호의 중심점을 지나도록 구성되는 것을 특징으로 하는 다중곡면을 갖는 수평연장 LNG 저장탱크.The radius of curvature R 2 , ..., R n-1 , R n having a horizontal curved LNG storage tank having a multi-curve characterized in that configured to pass through the center point of the arc located at the tip.
KR1020090092271A 2009-09-29 2009-09-29 Horizontally extended spherical type lng tank with multi-curvature surfaces KR20110034824A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160068040A (en) * 2014-12-04 2016-06-15 주식회사 포스코 Storage tank structure for fluid and Storage tank for fluid having thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160068040A (en) * 2014-12-04 2016-06-15 주식회사 포스코 Storage tank structure for fluid and Storage tank for fluid having thereof

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