Arrangement method of corrugated plates and corrugated units of liquid cargo containment system of LNG (Liquefied Natural Gas) ship

Abstract

The invention relates to an arrangement method of corrugated plates and corrugated units of a liquid cargo containment system of an LNG (liquefied natural gas) ship, the corrugated plates of the liquid cargo containment system of the LNG ship are obtained by staggering and splicing a plurality of same corrugated units with corrugated bulges, each pair of mutually corresponding sides of the bottom surfaces of every two adjacent corrugated units are not on the same continuous straight line, and the corrugated units are arranged on the corrugated plates of the liquid cargo containment system of the LNG ship. A blank area without corrugated protrusions exists between every two non-adjacent corrugated units. According to the corrugated unit arrangement method, the design limitation of a traditional common corrugated unit arrangement method on the corrugated unit can be avoided, more selection and optimization spaces are provided for the form of the corrugated unit, the edge, with the worst tensile resistance, of the corrugated unit is not located on the same continuous straight line in the arrangement process, and concentration of cold shrinkage stress on the continuous straight line is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of shipbuilding, and in particular to an arrangement method of corrugated plates and corrugated units of a liquid cargo containment system of an LNG ship. Background Art

[0002] At present, the corrugated units of the corrugated plate of the liquid cargo containment system of LNG ships are commonly arranged crosswise or in parallel. This arrangement has a great restriction on the design of the corrugated units, limiting the diversity and optimization direction of the corrugated units. In addition, the edge of the corrugated unit with the worst tensile resistance is on a continuous straight line, resulting in the concentration of cold shrinkage stress on the continuous straight line. Summary of the invention

[0003] (1) Technical issues to be solved

[0004] The present application provides a method for arranging corrugated plates and corrugated units of a liquid cargo containment system of an LNG ship, which solves the problems in the above-mentioned background technology.

[0005] (2) Technical solution

[0006] In the first aspect, the present application provides a corrugated plate of a liquid cargo containment system for an LNG ship, wherein the corrugated plate of the liquid cargo containment system for an LNG ship is obtained by staggered splicing of a plurality of identical corrugated units with corrugated protrusions, wherein each pair of sides corresponding to each other on the bottom surfaces of each two adjacent corrugated units are not on a continuous straight line, and there is a blank area without corrugated protrusions between each two non-adjacent corrugated units.

[0007] Furthermore, the shape of the blank area is the same as the shape of the bottom surface of the corrugated unit.

[0008] Furthermore, the area of ​​the blank region is smaller than the area of ​​the bottom surface of the corrugated unit.

[0009] Furthermore, the shape of the bottom surface of the corrugated unit is a square, and the shape of the blank area is a square.

[0010] Furthermore, every four of the corrugated units are arranged around the same blank area as the center.

[0011] Furthermore, the length of the connecting portion between each two adjacent corrugated units is half the length of the connecting sides.

[0012] Furthermore, the side length of the blank area is half the side length of the bottom surface of the corrugated unit.

[0013] In a second aspect, the present application provides a method for arranging a corrugated unit of a liquid cargo containment system of an LNG ship, comprising:

[0014] Four identical corrugated units with corrugated protrusions are arranged around the same blank area as the center, and staggered and spliced ​​to obtain the corrugated plate of the LNG ship liquid cargo containment system.

[0015] (3) Beneficial effects

[0016] The above technical solution of the present application has the following advantages:

[0017] The corrugated plate of the LNG ship liquid cargo containment system provided in the first aspect of the present application can circumvent the design limitations of the corrugated unit in the traditional commonly used corrugated unit arrangement method, so that the form of the corrugated unit has more choices and optimization space. The edge of the corrugated unit with the worst tensile resistance is not on a continuous straight line in the arrangement, thereby avoiding the concentration of cold shrinkage stress on the continuous straight line.

[0018] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the corrugated plate of the LNG carrier liquid cargo containment system provided for this application;

[0021] Figure 2 A partial enlarged view of the corrugated plate of the LNG carrier liquid cargo containment system provided for this application.

[0022] Figure numerals: 1. corrugated unit; 11. each pair of sides of the bottom surfaces of two adjacent corrugated units corresponding to each other; 12. the connecting part of two adjacent corrugated units; 13. the connecting sides of two adjacent corrugated units; 2. blank area. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0027] The present application provides a corrugated plate for a liquid cargo containment system of an LNG carrier, the purpose of which is to design a corrugated unit arrangement method that avoids the edges of the corrugated units being on a continuous straight line, thereby circumventing the design restrictions of the corrugated units by the conventional commonly used corrugated unit arrangement method, and providing more choices and optimization space for the form of the corrugated units. The present application is applicable to liquid cargo tanks of LNG carriers, LNG fuel tanks of other ships, and land LNG storage tanks, etc.

[0028] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0029] The embodiment of the present application provides a corrugated plate of a liquid cargo containment system of an LNG ship, such as Figure 1 and Figure 2As shown, the corrugated plate of the LNG ship liquid cargo containment system is obtained by staggered splicing of multiple identical corrugated units 1 with corrugated protrusions, each pair of edges 11 corresponding to each other on the bottom surfaces of each two adjacent corrugated units 1 are not on a continuous straight line, and there is a blank area 2 without corrugated protrusions between each two non-adjacent corrugated units 1.

[0030] In some embodiments, the shape of the blank area 2 is the same as the shape of the bottom surface of the corrugated unit 1 .

[0031] In some embodiments, the area of ​​the blank region 2 is smaller than the area of ​​the bottom surface of the corrugated unit 1 .

[0032] In some embodiments, the shape of the bottom surface of the corrugated unit 1 is a square, and the shape of the blank area 2 is a square.

[0033] In some embodiments, every four corrugated units 1 are arranged around the same blank area 2 as the center.

[0034] In some embodiments, the length of the connecting portion 12 of each two adjacent corrugated units 1 is half the length of the connecting edge 13 .

[0035] In some embodiments, the side length of the blank area 2 is half the side length of the bottom surface of the corrugated unit 1 .

[0036] In applications, such as Figure 2 As shown, the central square blank area is a square flat area without corrugated protrusions with a side length of half the side length of the bottom surface of the corrugated unit. The corrugated unit contains stamping protrusions and has the ability to absorb deformation.

[0037] Place a corrugated unit close to the blank area of ​​the central square, and make one side of the central square overlap with the side of the corrugated unit and keep one end of the two sides overlap. The remaining three corrugated units are the same as above and are rotated 90 degrees around the center to correspond to the remaining three sides of the central square, forming a surrounding arrangement of four corrugated units around the central square.

[0038] There are no continuous plane straight lines in any direction in the corrugated plate, thus avoiding the concentration of cold shrinkage stress. In this embodiment, a quadrangular pyramid corrugated unit is used, and the specific form of the corrugated unit can be adjusted according to the needs.

[0039] The embodiment of the present application also provides a method for arranging corrugated units of an LNG ship liquid cargo containment system, comprising: arranging four identical corrugated units with corrugated protrusions around the same blank area as the center, and staggered splicing them to obtain the corrugated plate of the LNG ship liquid cargo containment system.

[0040] In application, the arrangement method of the corrugated unit of the LNG carrier liquid cargo containment system includes leaving a blank area in the center and arranging the corrugated units in a manner that the first half width overlaps and surrounds the central blank area.

[0041] Leaving a blank area in the center means leaving a blank area without corrugated protrusions in the center when arranging the corrugated units, and arranging the corrugated units around the central blank area with the th half-width overlapping and surrounding it means arranging four corrugated units around the central blank area with the th half-width overlapping and surrounding the central square edge.

[0042] Specifically, leaving a blank area in the center means reserving a square blank area without corrugation protrusions at the center position, the side length of which is half the side length of the bottom surface of the corrugation unit.

[0043] The arrangement of the corrugated units surrounding the central blank area with half the width overlapping is to place a corrugated unit close to the central square plane area, and make one side of the central square overlap with the edge of the bottom surface of the corrugated unit and one end point of the two sides remain overlapping, and the remaining three corrugated units are the same as above and are rotated 90 degrees around the center and arranged corresponding to the remaining three sides of the central square, forming an arrangement of four corrugated units surrounding the central square.

[0044] Leaving a square blank area in the center can provide a positioning reference and misalignment space for the surrounding corrugated units, and reserve a position for anchor welding of the corrugated plate.

[0045] The arrangement of the corrugated units with their first half-width overlapped around the central blank area can ensure that the edge of the corrugated unit with the worst tensile resistance is not on a continuous straight line in the arrangement, thus avoiding the concentration of shrinkage stress on the continuous straight line.

[0046] The arrangement method of the corrugated plate and corrugated unit of the LNG ship liquid cargo containment system provided in the embodiment of the present application has a simple arrangement form of the corrugated unit, is easy to process, has a strong adaptability to the corrugated unit, and has low shrinkage stress at low temperatures. The arrangement method of the present application broadens the design form of the corrugated unit, so that the form of the corrugated unit has more choices and optimization space, which is conducive to the design and production of the corrugated plate. It can be used in, including but not limited to, LNG transport ships, LNG fuel tanks, LNG land storage tanks, etc.

[0047] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0048] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For the embodiments of the method, the relevant parts can refer to the partial description of the device embodiment (adopted according to the writing situation). The present application is not limited to the specific steps and structures described above and shown in the figures. In addition, for the sake of simplicity, a detailed description of known method technologies is omitted here.

[0049] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A corrugated plate for a liquid cargo containment system of an LNG ship, characterized in that: The corrugated plate of the LNG ship liquid cargo containment system is obtained by staggered splicing of multiple identical corrugated units with corrugated protrusions, each pair of edges corresponding to each other on the bottom surfaces of each two adjacent corrugated units are not on a continuous straight line, and there is a blank area without corrugated protrusions between each two non-adjacent corrugated units.

2. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 1, characterized in that: The shape of the blank area is the same as the shape of the bottom surface of the corrugated unit.

3. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 1, characterized in that: The area of ​​the blank region is smaller than the area of ​​the bottom surface of the corrugated unit.

4. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 1, characterized in that: The shape of the bottom surface of the corrugated unit is a square, and the shape of the blank area is a square.

5. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 4, characterized in that: Every four corrugated units are arranged around the same blank area as the center.

6. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 4, characterized in that: The length of the connecting portion between each two adjacent corrugated units is half the length of the connecting sides.

7. The corrugated plate of the LNG carrier liquid cargo containment system according to claim 4, characterized in that: The side length of the blank area is half of the side length of the bottom surface of the corrugated unit.

8. A method for arranging a corrugated unit of a liquid cargo containment system of an LNG ship, comprising: Four identical corrugated units with corrugated protrusions are arranged around the same blank area as the center, and staggered and spliced ​​to obtain the corrugated plate of the LNG ship liquid cargo containment system according to any one of claims 1 to 7.

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