Four-lobe cargo tank for transporting and / or storage of liquified gases

Abstract

21 Abstract A four‐lobe cargo tank for transporting and / or storage of liquified gases, wherein the tank comprises four main lobes each with a cylinder sector outer shell and main lobe axis, and said four main lobes are arranged with said four main lobe axis axial‐parallel with and about a common main central axis, such that said four 5 main lobes joined by four web frames with four corresponding diagonally arranged perforated bulkheads directed outwardly from said main central axis, and said tank further comprises a first and a second end cover and each end cover further comprising four quarter spherical shell portions which each is forming an end portion of said cylinder sector outer shell, and said quarter spherical shell portions of said 10 first and second end covers, respectively, are joined and closing toward said main central axis by a first and a second four diagonally arranged cylindrical 45‐degree cut pipe portions, which each are arranged with its axis transverse to said main axis. Figure 1b for the abstract. 15 20 21 5 10 15 20 20 26 21 68 02 13 A ug 2 02 6 2 1 1 3 A u g 2 0 2 6 5 2 0 2 6 2 1 6 8 0 2 1 0 2 0 1 / 9 1:F ou r-l ob ec ar go ta nk a1 :co mm on ma in ce ntr al ax is a1 1:m ain lo be ax is a1 1 20 :ce ntr al pip e 14 a 15 a 14 a 15 a 12 14 a 15 a 12 15 a 12 :cy lin de r s ec tor ou ter sh ell 14 a 13 a:f irs te nd co ve r 14 b 14 b 15 b 15 b 15 b 15 b:c yli nd ric al pip e 45 -d eg re e- po rtio n 14 b:q ua rte rs ph er ica l sh ell po rtio n 14 b 20 13 b:s ec on de nd co ve r 13 b:s ec on de nd co ve r Fi g.  1 a Fi g.  1 b Fi g.  1 c 11 : m ain lo be 11 11 11 11 11 1111 1:Four-lobe cargo tank 20:central pipe 11 a1:common main central axis 14a 13b:second end cover 11 13a:first end cover 15a 15a 11 14a 14a 14b 14b 11: main lobe 15b 15b 15a 15a 12 12 1 / 9 15b 11 14b 11 13b:second end cover 11 20 15b:cylindrical 14a a11:main lobe axis a11 pipe 45-degree-portion 11 12:cylinder sector outer shell 14b:quarter spherical shell portion Fig. 1a Fig. 1b Fig. 1c 20 26 21 68 02 13 A ug 2 02 6 2 0 2 6 2 1 6 8 0 2 1 3 A u g 2 0 2 6 1:Four-lobe cargo tank 2 0 : c e n t r a l p i p e 1 1 a1:common main central axis 1 1 13a:first end cover 1 1 1 1 : m a i n l o b e 1 1 13b:second end cover 11 a11:main lobe axis 1 2 : c y l i n d e r s e c t o r o u t e r s h e l l

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