An arrangement for a cylindrical tank for transportation of liquefied gases at low temperature in a ship
A cylindrical container and liquefied gas technology, applied to the method of container discharge, the manufacture of the container structure, the outer wall of the container structure, etc., can solve the problems of hull deformation, difficult and impossible application of reinforcements, etc., and achieve accurate The effect of roundness
Inactive Publication Date: 2011-02-09
坦克尔工程联合股份有限公司
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AI Technical Summary
Problems solved by technology
[0021] Deformations of the surrounding hull with saddle structures and radial deformation of the vessel in the support area make it difficult to accurately precalculate the stress levels in the cargo vessel unit
However, such accurate precalculation of stresses is mandated by appropriate national / international governing authorities and classification societies, while various types of structures / strengthens for cylindrical vessels on smaller ships are difficult or impossible for larger ships
Method used
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Embodiment Construction
[0048] Figure 1A with 1B Shows a total cargo capacity of approximately 145.000m 3 The general arrangement plan of the LNG carrier 1, which has three cylindrical cargo containers.
[0049] Figure 2A with 2B Showing cross-sections through the ship and through the cargo container (see Figure 1A Section A-A), the section shown is between the perforated bulkhead 3 at one of the supports of a cargo container.
[0050] These figures show two alternative structural arrangements / solutions for the frame located between the circular perforated bulkheads.
[0051] Figure 2A The frame shown in between consists of vertical plate girders 4 and horizontal plate girders 5 .
[0052] A concentric ring beam 6 is arranged on the outside, and radial beams 7 are arranged between the concentric ring beam 6 and the shell 2 of the container 2 . In order to optimize the force transfer between the shell plate and the beam, it is important that the force is transmitted perpendicularly towards t...
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A horizontal generally cylindrical tank (2) for transportation of liquefied gases at low temperature in a ship is supported in two saddle supports (12) in the ship (1). At each support, the tank has internal reinforcements comprising two adjacent perforated bulkheads (3) and a framework of crossing girders / stiffeners (4-7) welded between the bulkheads (3), thus providing a tank (2) with sufficient strength for a capacity in the range of at least 40.000 - 60.000 m<3>. A method for securing accurate roundness of the tank in the support area is also described.
Description
technical field [0001] This invention relates to the design, construction and support of large self-contained horizontal and generally cylindrical vessels for the transport of cryogenic liquefied gases on board ships. The invention is also applicable in principle to so-called double containers, which consist of two cylindrical containers and are built together to form a common container. Background technique [0002] Horizontal and self-contained cylindrical vessels have largely been used on ships of relatively small gross loading capacity for the transport of cryogenic liquefied gases, and the largest known and built such cargo containers have a total cargo capacity of about 30.000m 3 . [0003] However, in the past 20-30 years, many larger ships for transporting liquefied gas have been built, usually with specifications and total cargo capacity of 120.000-160.000m 3 within range. Recently, the total cargo capacity in 200.000m 3 Such ships as above have also been contr...
Claims
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IPC IPC(8): F17C13/08F17C3/02
CPCF17C2203/012F17C2250/0491F17C1/08F17C2203/0639F17C2223/033F17C2203/013F17C2201/0109F17C2260/011F17C2203/0646F17C2203/0643F17C2223/0161F17C2205/013F17C2201/035F17C2203/015F17C2221/033F17C2260/017F17C2205/0134F17C2203/0617F17C2201/052F17C2270/0105F17C2205/0119F17C2250/043F17C2260/016F17C2203/0304F17C2205/0379F17C2209/221F17C13/08F17C13/02B63B25/08
Inventor H·安塞斯
Owner 坦克尔工程联合股份有限公司