A LNG carrier liquid cargo containment system corrugated unit and corrugated plate

Abstract

The application relates to a LNG ship liquid cargo containment system corrugated unit and a corrugated plate, wherein the LNG ship liquid cargo containment system corrugated unit comprises a bottom plane part and a corrugated convex part arranged in a stack, the corrugated convex part has a certain height relative to the bottom plane part, the height is less than the length of the bottom plane part; the projection of the corrugated convex part on the bottom plane part coincides with the bottom plane part; the bottom plane part has a plurality of edges, and each edge of the bottom plane part is connected with the corrugated convex part. The corrugated convex structure can simultaneously absorb transverse and vertical low-temperature cold contraction deformation, so that the internal stress generated by the low-temperature contraction of the corrugated plate in a large temperature difference change working scene can be reduced. The corrugated unit has a simple form structure, is easy to process, is easy to control in forming in punching and stamping, has uniform and dispersed thinning rates, and has a high yield.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shipbuilding, and particularly relates to a LNG ship liquid cargo containment system corrugated unit and corrugated plate. BACKGROUND

[0002] The cross-continuous closed-loop corrugated plate of the LNG ship containment system commonly used at present is prone to stress concentration in the non-corrugated area of the welded anchoring section in a large temperature difference change working scene. The corrugated arrangement is relatively concentrated, and the parent material forming and local thinning rate are difficult to control in the corrugated stamping manufacturing process. SUMMARY

[0003] (1) Technical problem to be solved

[0004] The present application provides a LNG ship liquid cargo containment system corrugated unit and corrugated plate, which solves the problems in the background art.

[0005] (2) Technical scheme

[0006] In a first aspect, the present application provides a LNG ship liquid cargo containment system corrugated unit, comprising a bottom flat part and a corrugated protruding part arranged in a stack, the corrugated protruding part has a certain height relative to the bottom flat part, the height is less than the length of the bottom flat part; the projection of the corrugated protruding part on the bottom flat part coincides with the bottom flat part; the bottom flat part has a plurality of edges, and each edge of the bottom flat part is connected with the corrugated protruding part.

[0007] Further, the corrugated protruding part has a plurality of faces, and each face of the corrugated protruding part is connected with a corresponding edge of the bottom flat part.

[0008] Further, the shape of the bottom flat part is a square, and the edges of the bottom flat part include a first edge, a second edge, a third edge and a fourth edge.

[0009] Further, the shape of the corrugated protruding part is a quadrangular pyramid, and the faces of the corrugated protruding part include a first face, a second face, a third face and a fourth face.

[0010] Further, the first face is connected with the first edge, the second face is connected with the second edge, the third face is connected with the third edge, and the fourth face is connected with the fourth edge.

[0011] Further, the four edges of the corrugated protruding part are connected with the four corner points of the bottom flat part correspondingly.

[0012] Further, the projection of the vertex of the corrugated protruding part on the bottom flat part is located at the center of the bottom flat part.

[0013] Further, the height of the corrugated protrusion is one tenth of the length of the bottom plane.

[0014] In a second aspect, the application provides a LNG ship liquid cargo containment system corrugated plate, which is obtained by splicing a plurality of the LNG ship liquid cargo containment system corrugated units.

[0015] (3) Advantageous effects

[0016] The above technical solutions of the application have the following advantages:

[0017] The LNG ship liquid cargo containment system corrugated unit provided in the first aspect of the application can simultaneously absorb transverse and vertical low-temperature cold contraction deformation through the corrugated protrusion structure, so that the internal stress generated by low-temperature contraction of the corrugated plate in a large temperature difference change working scenario can be reduced. The corrugated unit has a simple form structure, is easy to process, is easy to control in forming during processing and stamping, has uniform and dispersed thinning rates, and has a high yield rate.

[0018] It can be understood that the advantageous effects of the above second aspect can be seen from the related description in the above first aspect, and will not be described here again. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 A schematic view of the LNG ship liquid cargo containment system corrugated unit provided by the application;

[0021] Figure 2 A sectional view of the LNG ship liquid cargo containment system corrugated unit provided by the application;

[0022] Figure 3 A schematic view of the LNG ship liquid cargo containment system corrugated plate provided by the application.

[0023] Reference signs: 1, bottom plane; 11, first side; 12, second side; 13, third side; 14, fourth side; 2, corrugated protrusion; 21, first face; 22, second face; 23, third face; 24, fourth face. DETAILED DESCRIPTION

[0024] The specific embodiments of the application will be further described in detail below with reference to the drawings and examples. The following examples are used to illustrate the application, but are not used to limit the scope of the application.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the description of the present application, the reference "one embodiment" or "some embodiments" and the like means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized.

[0028] The present application provides a LNG ship liquid cargo containment system corrugated unit and corrugated plate, which aims to reduce the internal stress generated by low-temperature shrinkage of the corrugated plate in a large temperature difference change working scene, and is suitable for LNG transport ship liquid cargo tank, other ship LNG fuel tank, and land LNG storage tank, etc.

[0029] The specific embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0030] The present application provides a LNG ship liquid cargo containment system corrugated unit, as shown in Figure 1 and Figure 2As shown, the wave unit comprises a bottom flat part 1 and a corrugated protruding part 2 arranged in a stack, the corrugated protruding part 2 has a certain height relative to the bottom flat part 1, the height is less than the length of the bottom flat part 1; the projection of the corrugated protruding part 2 on the bottom flat part 1 coincides with the bottom flat part 1; the bottom flat part 1 has multiple edges, and each edge of the bottom flat part 1 is connected with the corrugated protruding part 2.

[0031] In some embodiments, the corrugated protruding part 2 has multiple surfaces, and each surface of the corrugated protruding part 2 is connected with each edge of the bottom flat part 1 correspondingly.

[0032] In some embodiments, the bottom flat part 1 is in the shape of a square, and the edges of the bottom flat part 1 include a first edge 11, a second edge 12, a third edge 13, and a fourth edge 14.

[0033] In some embodiments, the corrugated protruding part 2 is in the shape of a quadrangular pyramid, and the surfaces of the corrugated protruding part 2 include a first surface 21, a second surface 22, a third surface 23, and a fourth surface 24.

[0034] In some embodiments, the first surface 21 is connected with the first edge 11, the second surface 22 is connected with the second edge 12, the third surface 23 is connected with the third edge 13, and the fourth surface 24 is connected with the fourth edge 14.

[0035] In some embodiments, the four edges of the corrugated protruding part 2 are connected with the four corner points of the bottom flat part 1 correspondingly.

[0036] In some embodiments, the projection of the vertex of the corrugated protruding part 2 on the bottom flat part 1 is located at the center of the bottom flat part 1.

[0037] In some embodiments, the height of the corrugated protruding part 2 is one-tenth of the length of the bottom flat part 1.

[0038] In application, the bottom edge of the wave unit is in the shape of a flat square, that is, the connecting line of the bottom edge of the wave unit forms a flat square, which is convenient for connecting with the surrounding structure or adjacent wave units and arranging in the overall design of the wave plate. The protrusion of the wave unit is in the shape of a quadrangular pyramid, which is arranged in the center of the square, and the four edges are connected with the four corner points of the bottom square respectively.

[0039] The longitudinal and transverse cold shrinkage deformation reserves are stored by the quadrangular pyramid protrusion, and the cold shrinkage internal stress received by a single particle of the flat material at low temperature is reduced. The symmetrical and stable quadrangular pyramid protrusion structure has a small size and strong bearing capacity, and the work of installing pressure bearing pads on the opposite side can be omitted.

[0040] The bottom edge of the corrugated unit is square, and the protrusion of the corrugated unit is a quadrangular pyramid. The corrugated protrusion structure can simultaneously absorb transverse and vertical low-temperature cold shrinkage deformation. The square bottom edge facilitates connection with surrounding structures or corrugated unit cells.

[0041] The corrugated unit has a simple form structure, is easy to process, and is easy to control in forming and thinning during stamping. The thinning rate is uniformly dispersed, and the yield rate is high. The corrugated unit can be used in working scenes that need to withstand large temperature changes, including but not limited to LNG transport ships, LNG fuel tanks, LNG land storage tanks, and the like.

[0042] The corrugated unit has a simple structure, and the protrusion distance of the vertical plate surface is not large, so the bearing capacity is strong. The corrugated unit does not need to be provided with a pressure-bearing aluminum block on the reverse side. The corrugated unit is not limited in size. If necessary, the size of the corrugated unit can be made smaller, so as to effectively disperse the low-temperature cold shrinkage deformation, so that each corrugated unit bears a smaller deformation, which is controlled within the elastic deformation, thereby improving the fatigue life, reducing the low-temperature cold shrinkage stress, effectively improving the fatigue life, and ensuring safety.

[0043] In the embodiment, the size of a single corrugated unit is 100mm*100mm*10mm, and the plate thickness is 1.2mm. The size of the whole corrugated plate is 3000mm*1000mm*10mm, and the plate thickness is 1.2mm. The specific size can be adjusted according to the requirements.

[0044] In the embodiment, the single corrugated unit does not exist independently, but is stamped on a whole mother plate together with the whole corrugated plate, and is in a continuous form.

[0045] The embodiment of the application further provides an LNG ship liquid cargo containment system corrugated plate, as shown in the figure, the corrugated plate is obtained by splicing a plurality of LNG ship liquid cargo containment system corrugated units. Figure 3

[0046] The LNG ship liquid cargo containment system corrugated unit and the corrugated plate provided by the embodiment of the application pre-store longitudinal and transverse cold shrinkage deformation amounts in form. Compared with a single particle of a flat material subjected to cold shrinkage internal stress at low temperature, the cold shrinkage internal stress is reduced. The corrugated unit has a simple form structure, is easy to process, and is easy to control in forming and thinning during stamping. The thinning rate is uniformly dispersed, and the yield rate is high.

[0047] ​Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above functional units and modules is taken as an example, and in actual application, the above functions can be completed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit or module in the embodiment can be integrated in one processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. In addition, the specific names of each functional unit or module are only for the convenience of mutual distinction, and do not limit the protection scope of the application.

[0048] It should be clear that each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment focuses on the difference from other embodiments. For the embodiment of the method, the relevant part can be referred to the part of the device embodiment (according to the writing situation). The present application is not limited to the specific steps and structures described above and shown in the drawings. Moreover, for the sake of brevity, the detailed description of known methods and techniques is omitted here.

[0049] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A corrugated unit for an LNG carrier cargo containment system, characterized in that, Applicable to LNG carriers; the corrugated unit includes a bottom flat portion and a corrugated protrusion arranged on a stacked arrangement, the corrugated protrusion having a certain height relative to the bottom flat portion, the height being less than the length of the bottom flat portion; the projection of the corrugated protrusion onto the bottom flat portion coincides with the bottom flat portion; The bottom flat portion has multiple sides, and each side of the bottom flat portion is connected to the corrugated protrusion; The bottom flat portion is square in shape, and the sides of the bottom flat portion include a first side, a second side, a third side, and a fourth side; the corrugated protrusion is a square pyramid in shape, and the surface of the corrugated protrusion includes a first surface, a second surface, a third surface, and a fourth surface; the first surface is connected to the first side, the second surface is connected to the second side, the third surface is connected to the third side, and the fourth surface is connected to the fourth side. The four edges of the corrugated protrusion are respectively connected to the four corner points of the bottom plane; the projection of the vertex of the corrugated protrusion on the bottom plane is located at the center of the bottom plane; the longitudinal and transverse cold shrinkage deformation allowance is stored in the form of a four-sided pyramid protrusion.

2. The corrugated unit of the LNG carrier cargo containment system as described in claim 1, characterized in that, The height of the corrugated protrusion is one-tenth of the side length of the bottom flat portion.

3. A corrugated plate for an LNG carrier cargo containment system, characterized in that, The corrugated plate is obtained by splicing together corrugated units of the LNG carrier liquid cargo containment system as described in any one of claims 1 to 2.

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