Corrugated board and storage container
Patent Information
- Application Number
- CN202522439166.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-18
AI Technical Summary
现有的波纹板在波纹处、尤其是在横纵向波纹的交汇处的材料均匀度、流畅度、强度都有待加强
[0020]根据本实用新型上述方案的波纹板，交汇部分通过在两侧的凹部中设置隆起结构，形成了材料分布均匀、应力传递合理的几何形态。这种结构既避免了因材料过度拉伸导致的局部薄弱，也防止了因材料堆积造成的厚度不均，从而显著提升了波纹板在复杂载荷下的耐久性与抗疲劳性能。
Smart Images
Figure CN224782886U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of storage tank technology, specifically to a corrugated plate and a storage container, which can be a floating storage container. Background Technology
[0002] LNG typically relies on transportation equipment, such as ships and other marine equipment, for transport. The main components of an LNG receiving terminal include terminal unloading, LNG storage, processing, and export. Among these, the LNG storage tanks, which bear the responsibility of storage, have the longest construction period, the most advanced technology, and the most challenges during the project construction process, and are consistently managed as the critical path of the entire project. Furthermore, the structural design and technological innovation of LNG storage tanks are a key focus for domestic and international industry professionals.
[0003] In LNG storage tanks, the corrugated sheets used to form the sealing layer need to maintain good sealing performance and stability under various operating conditions. Therefore, the configuration and quality of the corrugated sheets are particularly important, and the requirements for the manufacturing process of the corrugated sheets are also high. The material uniformity, smoothness, and strength of existing corrugated sheets, especially at the intersection of transverse and longitudinal corrugations, need to be improved.
[0004] Therefore, there is a need to provide a corrugated plate and a storage container having the corrugated plate to at least partially solve the above-mentioned problems. Utility Model Content
[0005] To at least address the aforementioned problems, this utility model provides a corrugated plate, the corrugated plate comprising:
[0006] Corrugated sheet body;
[0007] The first corrugated portion is disposed on the corrugated plate body, the first corrugated portion has a first height in a height direction perpendicular to the corrugated plate body and the first corrugated portion extends in a first direction parallel to the corrugated plate body.
[0008] A second corrugated portion is disposed on the corrugated plate body. The second corrugated portion has a second height in the height direction and extends along a second direction parallel to the corrugated plate body. The second height is less than the first height, and the maximum width of the second corrugated portion in the first direction is less than the maximum width of the first corrugated portion in the second direction. The second corrugated portion intersects the first corrugated portion perpendicularly.
[0009] The intersection portion is formed at the intersection of the first corrugated portion and the second corrugated portion. The intersection portion includes a top formed above the top surface of the second corrugated portion and side portions respectively disposed on both sides of the top along the first direction. Each side portion includes four ridges and a recess formed between the four ridges. The first and second ridges of the four ridges extend from the top in a direction toward the corrugated plate body and fall within two adjacent quadrants of the four quadrants formed by the orthogonal first crest of the first corrugated portion and the second crest of the second corrugated portion. The third and fourth ridges of the four ridges extend from the first and second ridges respectively in a direction away from the corrugated plate body to both sides of the first corrugated portion.
[0010] The recess also has a raised structure formed between the third ridge and the fourth ridge, and protrudes outward relative to the plane formed by the third ridge and the fourth ridge. The raised structure is smoothly connected to the first top surface of the first corrugated portion and is inclined relative to the first top surface in the direction toward the corrugated plate body.
[0011] Preferably, the raised structure has a first raised edge and a second raised edge located in the recess, the intersection of the first raised edge and the second raised edge is located on the plane formed by the first ridge and the second ridge, the first raised edge extends from the connection of the first ridge and the third ridge to the intersection, and the second raised edge extends from the connection of the second ridge and the fourth ridge to the intersection, the raised structure is surrounded by the first raised edge, the second raised edge, the third ridge and the fourth ridge.
[0012] Preferably, the junction point is higher in the height direction than the junction of the first ridge and the third ridge, and the junction of the second ridge and the fourth ridge.
[0013] Preferably, the extension length of the raised structure in the first direction is greater than the extension length of each of the third ridge and the fourth ridge in the first direction.
[0014] Preferably, the recess includes pits disposed on both sides of the raised structure in the second direction.
[0015] Preferably, the raised structure and the two recesses are arranged symmetrically with respect to the first crest of the first corrugated portion.
[0016] Preferably, the two sides are arranged symmetrically with respect to the second peak of the second corrugated portion.
[0017] Preferably, a groove portion is formed between two first ridges or two second ridges on the same side of the first corrugated portion, located above the second corrugated portion, and the bottom of the groove portion extends perpendicularly to the corrugated plate body.
[0018] In another aspect, the present invention provides a storage container, the wall of which includes a base layer and a sealing layer located inside the base layer, wherein the sealing layer includes a corrugated plate according to any one of the preceding claims.
[0019] Preferably, the storage container is a land-based or floating storage container.
[0020] According to the above-described solution of this utility model, the corrugated plate at the intersection portion forms a geometric shape with uniform material distribution and reasonable stress transmission by setting raised structures in the recesses on both sides. This structure avoids local weakness caused by excessive material stretching and also prevents uneven thickness caused by material accumulation, thereby significantly improving the durability and fatigue resistance of the corrugated plate under complex loads. Attached Figure Description
[0021] To better understand the above and other objects, features, advantages, and functions of this utility model, reference can be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the drawings refer to the same parts. Those skilled in the art should understand that the drawings are intended to schematically illustrate the preferred embodiments of this utility model and do not limit the scope of this utility model in any way; the parts in the drawings are not drawn to scale.
[0022] Figure 1 This is a perspective view of a corrugated plate according to a preferred embodiment of the present invention;
[0023] Figure 2 for Figure 1 A three-dimensional schematic diagram of the corrugated plate from another angle;
[0024] Figure 3 for Figure 1 A three-dimensional schematic diagram of the corrugated plate as viewed along the second direction;
[0025] Figure 4 for Figure 1 The diagram shows a three-dimensional representation of the corrugated plate from another angle. Detailed Implementation
[0026] Now, with reference to the accompanying drawings, specific embodiments of the present invention will be described in detail. The embodiments described herein are merely preferred embodiments of the present invention; those skilled in the art can conceive of other ways to implement the present invention based on these preferred embodiments, and such other ways also fall within the scope of the present invention.
[0027] This utility model provides a corrugated plate 100 and a storage container having the corrugated plate 100. The corrugated plate 100 is preferably made of a metallic material (e.g., steel) and is suitable for manufacturing storage containers, particularly for storing liquefied gases such as liquefied natural gas (LNG), liquid nitrogen, liquid oxygen, liquid hydrogen, and liquid helium, for use in marine or land-based engineering equipment. The following description, in conjunction with... Figures 1 to 4 A preferred embodiment of the corrugated plate 100 will be described.
[0028] like Figure 1 As shown, the corrugated plate 1001 is made of a flat metal plate and includes a corrugated plate body 110, a first corrugated portion 120, and a second corrugated portion 130. Both the first corrugated portion 120 and the second corrugated portion 130 protrude outwards relative to the corrugated plate body 110 in a direction approximately perpendicular to the plane of the corrugated plate body 110. This protrusion direction can be referred to as the height direction D1 (see...). Figure 3 The first corrugated portion 120 protrudes beyond the corrugated plate body 110 at a greater height (first height) than the second corrugated portion 130. Here, the protrusion height refers to the maximum outward distance of each of the first and second corrugated portions 120 relative to the corrugated plate body 110, i.e., the height of the crest. Furthermore, the first corrugated portion 120 extends along a first direction D2 on the corrugated plate body 110. The second corrugated portion 130 extends along a second direction D3 on the corrugated plate body 110. The first direction D2 and the second direction D3 are approximately perpendicular. That is, the first corrugated portion 120 and the second corrugated portion 130 are substantially orthogonal.
[0029] In some embodiments, both the first corrugated portion 120 and the second corrugated portion 130 can be constructed as arc-shaped corrugations. For example, refer to Figure 1 and Figure 4 When viewed along their respective extension directions, the first corrugated portion 120 and the second corrugated portion 130 have projected outlines that are arc-shaped, with their respective apexes being arc-shaped without sharp angles. It is understood that in other embodiments, at least one of the first corrugated portion 120 and the second corrugated portion 130 may be formed as a triangular corrugation; for example, when viewed along its extension direction, the projected outline of the corrugation forms a roughly triangular shape, with sharp angles at its apex. The maximum width of the first corrugated portion 120 perpendicular to its extension direction (first direction D2) is greater than the maximum width of the second corrugated portion 130 perpendicular to its extension direction (second direction D3). Referring to features such as height and width, the first corrugated portion 120 may also be referred to as a large corrugation, and the second corrugated portion 130 may also be referred to as a small corrugation.
[0030] The first corrugated portion 120 and the second corrugated portion 130 extend and intersect, forming an intersecting portion 140 at the intersection. The intersecting portion 140 can enhance the structural strength of the corrugated plate 100 at the intersection, which helps to extend its service life.
[0031] The confluence portion 140 includes a top 141 that protrudes outward from the center of the confluence location relative to the corrugated plate body 110 along the height direction D1. The top 141 is formed on the top surface of the second corrugated portion 130, and therefore its protrusion height relative to the corrugated plate body 110 is greater than that of the first corrugated portion 120. (Reference) Figure 1 As can be seen, the first corrugated portion 120 and the second corrugated portion 130 are orthogonal. Therefore, the first peak 121 of the first corrugated portion 120 and the second peak 131 of the second corrugated portion 130 can be regarded as two orthogonal coordinate axes, which divide the surrounding corrugated plate body 110 into four quadrants. The top 141 can be regarded as the origin of the coordinate axes. Figure 1 and Figure 2 As shown, the confluence portion 140 also includes side portions 142 respectively disposed on both sides of the top 141 along the first direction D2, and the two side portions 142 are symmetrically arranged with respect to the second wave crest 131 of the second corrugated portion 130. The two side portions 142 have substantially the same structure, and for the sake of simplicity, only the structure of one side portion 142 will be described in detail below.
[0032] The side portion 142 includes four ridges and recesses 143 formed between the four ridges, wherein the four ridges are a first ridge 144, a second ridge 145, a third ridge 146, and a fourth ridge 147. The first ridge 144 and the second ridge 145 are connected to the top 141 and extend downwardly from the top 141 in a direction toward the corrugated plate body 110, and the first ridge 144 and the second ridge 145 fall in adjacent quadrants of the four quadrants, respectively. The third ridge 146 and the fourth ridge 147 are connected to the first ridge 144 and the second ridge 145, and extend upwardly from the first ridge 144 and the second ridge 145 in a direction away from the corrugated plate body 110, respectively, and terminate on both sides of the first corrugated portion 120. The third ridge 146 and the first ridge 144 fall in the same quadrant, and the fourth ridge 147 and the second ridge 145 fall in the same quadrant. It is understandable that the connection between the first ridge 144 and the third ridge 146, and the connection between the second ridge 145 and the fourth ridge 147, form a relatively low-lying area in the recess 143.
[0033] Preferably, the first ridge 144 to the fourth ridge 147 are all formed on the outer surface of the first corrugated portion 120, and the first ridge 144 and the third ridge 146 are smoothly connected and transitioned on the outer surface of the first corrugated portion 120, as are the second ridge 145 and the fourth ridge 147. In other words, no obvious connection point is actually formed at the connection location of the aforementioned ridges, thus avoiding abrupt shape changes, which helps to prevent stress concentration.
[0034] from Figure 1 As can be seen, the extension direction of each ridge intersects with the first direction D2 and the second direction D3. And from... Figure 3 As can be seen, the extension direction of each ridge also intersects with the height direction D1. The ridges are formed by bending and protruding outwards from the corrugated plate 100 during the formation of the intersection 140.
[0035] like Figure 1 , Figure 3 and Figure 4 As shown, the recess 143 also has a raised structure 150, which is formed between the third ridge 146 and the fourth ridge 147 and is smoothly connected to the first top surface of the first corrugated portion 120. The raised structure 150 protrudes outward relative to the plane formed by the third ridge 146 and the fourth ridge 147. The raised structure 150 is inclined downward relative to the first top surface in the direction toward the corrugated plate body 110, that is, in the height direction D1, the raised structure 150 is lower than the first top surface of the first corrugated portion 120.
[0036] from Figure 4 As can be seen, the raised structure 150 has a first raised edge 150a and a second raised edge 150b, which are located in the recess 143 and connected together. For ease of explanation, in Figure 4The raised edges are symbolically indicated by dashed lines. It is understood that these dashed lines are only used to indicate the general direction of the raised edges and not to represent their actual shape. In a preferred embodiment, the intersection of the first raised edge 150a and the second raised edge 150b is located on the plane formed by the first ridge 144 and the second ridge 145, wherein the first raised edge 150a extends from the junction of the first ridge 144 and the third ridge 146 to the intersection, and the second raised edge 150b extends from the junction of the second ridge 145 and the fourth ridge 147 to the intersection. The first raised edge 150a and the second raised edge 150b are connected at an angle to each other, and the extension direction of the first raised edge 150a intersects both the first direction D2 and the second direction D3, and the extension direction of the second raised edge 150b intersects both the first direction D2 and the second direction D3. The raised structure 150 is basically surrounded by a first raised edge 150a, a second raised edge 150b, a third ridge 146 and a fourth ridge 147.
[0037] like Figure 3 and Figure 4 As shown, the intersection of the first raised edge 150a and the second raised edge 150b is higher than the connection point (joint point) of the first ridge 144 and the third ridge 146 in the height direction D1, and also higher than the connection point (joint point) of the second ridge 145 and the fourth ridge 147, such that both the first raised edge 150a and the second raised edge 150b extend non-parallel to the plane containing the corrugated plate body 110. Preferably, the extension length of the raised structure 150 in the first direction D2 is greater than the extension length of each of the third ridge 146 and the fourth ridge 147 in the first direction D2. That is, the raised structure 150 extends beyond the third ridge 146 and the fourth ridge 147 in the first direction D2.
[0038] According to this utility model, such as Figure 4 As shown, the recess 143 includes two recesses 160 disposed on both sides of the raised structure 150 in the second direction D3, with the two recesses 160 located in two adjacent quadrants respectively. The recesses 160 are configured to be recessed inward relative to the outer surface of the first corrugated portion 120. Preferably, the raised structure 150 and the two recesses 160 are arranged symmetrically with respect to the first crest 121 of the first corrugated portion 120.
[0039] It is understandable that during the corrugation process, material accumulates in some areas of the sheet metal and stretches in others, resulting in uneven thickness, which negatively impacts the sheet's strength. By incorporating the top 141, side 142, raised structure 150, and recess 160, the confluence portion 140 can absorb the material accumulation at the confluence points during corrugation and preferentially distribute the accumulated material towards the stretched areas of the sheet. This avoids localized thinning of the corrugated sheet 100 due to excessive material stretching and also prevents uneven thickness caused by material accumulation. Furthermore, compared to conventional corrugated sheets with grooves at the crests, the solution of this invention achieves better structural strength and fatigue resistance. Finite element analysis showed that the maximum strain of the confluence structure under extreme conditions was 2%, which is far lower than the ultimate strain that causes structural damage to most metal materials (for example, the ultimate strain of a single tensile test that causes structural damage to stainless steel is usually more than 40%), ensuring the safety of the confluence part 140 and the corrugated plate 100 as a whole during use.
[0040] refer to Figure 2 and Figure 3 A groove 148 is formed above the second corrugated portion 130 between two first ridges 144 or two second ridges 145 on the same side of the first corrugated portion 120. Furthermore, the bottom 149 of the groove 148 extends substantially along the height direction D1 (i.e., substantially perpendicular to the corrugated plate body 110). This configuration helps to give the ridges and top 141 better strength, improving their ability to resist load impacts perpendicular to the corrugated plate body 110.
[0041] The corrugated plate 100 according to this invention can be used to form part of the wall of a storage container. In some embodiments, the wall of the storage container includes, from the outside to the inside, a secondary insulation layer, a secondary sealing layer, a primary insulation layer, and a primary sealing layer. That is, the primary sealing layer is located at the innermost side of the container wall and is in contact with the contents (e.g., LNG) in the storage container, while the secondary insulation layer is located at the outermost side. Both the secondary sealing layer and the primary sealing layer can be composed of the corrugated plate 100 according to this invention. Both the secondary insulation layer and the primary insulation layer are composed of insulating boards (e.g., plywood) made of heat-insulating material. The secondary insulation layer and the primary insulation layer can also be referred to as the base layer.
[0042] The above description of various embodiments of this utility model is provided for descriptive purposes to a person skilled in the art. It is not intended to exclude or limit the utility model to a single disclosed embodiment. As taught above, those skilled in the art will understand that various alternatives and variations of this utility model are possible. Therefore, although some alternative embodiments have been specifically described, those skilled in the art will understand or relatively easily develop other embodiments. This utility model is intended to include all alternatives, modifications, and variations of the utility model described herein, as well as other embodiments falling within the spirit and scope of the utility model described above.
Claims
1. A corrugated plate (100), characterized in that, The corrugated plate (100) includes: Corrugated plate body (110); A first corrugated portion (120) is disposed on the corrugated plate body (110). The first corrugated portion (120) has a first height in a height direction (D1) perpendicular to the corrugated plate body (110) and extends in a first direction (D2) parallel to the corrugated plate body (110). A second corrugated portion (130) is disposed on the corrugated plate body (110). The second corrugated portion (130) has a second height in the height direction (D1) and extends along a second direction (D3) parallel to the corrugated plate body (110). The second height is less than the first height, and the maximum width of the second corrugated portion (130) in the first direction (D2) is less than the maximum width of the first corrugated portion (120) in the second direction (D3). The second corrugated portion (130) intersects the first corrugated portion (120) perpendicularly. An intersection portion (140) is formed at the intersection of the first corrugated portion (120) and the second corrugated portion (130), wherein the intersection portion (140) includes a top (141) formed on the top surface of the second corrugated portion (130) and side portions (142) respectively disposed on both sides of the top (141) along the first direction (D2), each side portion (142) including four ridges and a recess (143) formed between the four ridges, wherein the first ridge (144) of the four ridges... The second ridge (145) extends from the top (141) in a direction toward the corrugated plate body (110) and falls within two adjacent quadrants of the four quadrants formed by the first wave crest (121) of the first corrugated portion and the second wave crest (131) of the second corrugated portion, respectively. The third ridge (146) and the fourth ridge (147) of the four ridges extend from the first ridge (144) and the second ridge (145) in a direction away from the corrugated plate body (110) to both sides of the first corrugated portion (120), respectively. The recess (143) also has a raised structure (150) formed between the third ridge (146) and the fourth ridge (147) and protrudes outward relative to the plane formed by the third ridge (146) and the fourth ridge (147). The raised structure (150) is smoothly connected to the first top surface of the first corrugated portion (120) and is inclined relative to the first top surface in the direction toward the corrugated plate body (110).
2. The corrugated plate (100) according to claim 1, characterized in that, The raised structure (150) has a first raised edge (150a) and a second raised edge (150b) located in the recess (143), the intersection of the first raised edge (150a) and the second raised edge (150b) is located on the plane formed by the first ridge (144) and the second ridge (145), the first raised edge (150a) extends from the connection of the first ridge (144) and the third ridge (146) to the intersection, and the second raised edge (150b) extends from the connection of the second ridge (145) and the fourth ridge (147) to the intersection, the raised structure (150) is surrounded by the first raised edge (150a), the second raised edge (150b), the third ridge (146) and the fourth ridge (147).
3. The corrugated plate (100) according to claim 2, characterized in that, The intersection point is higher in the height direction than the junction of the first ridge (144) and the third ridge (146) and the junction of the second ridge (145) and the fourth ridge (147).
4. The corrugated plate (100) according to any one of claims 1-3, characterized in that, The extension length of the raised structure (150) in the first direction (D2) is greater than the extension length of each of the third ridge (146) and the fourth ridge (147) in the first direction (D2).
5. The corrugated plate (100) according to claim 1, characterized in that, The recess (143) includes a pit (160) disposed on both sides of the raised structure (150) in the second direction (D3).
6. The corrugated plate (100) according to claim 5, characterized in that, The raised structure (150) and the two recesses (160) are arranged symmetrically with respect to the first crest (121) of the first corrugated portion (120).
7. The corrugated plate (100) according to claim 1 or 6, characterized in that, The two sides (142) are arranged symmetrically with respect to the second wave crest (131) of the second corrugated portion (130).
8. The corrugated plate (100) according to claim 1, characterized in that, A groove (148) is formed between two first ridges (144) or two second ridges (145) on the same side of the first corrugated portion (120) and located above the second corrugated portion (130), the bottom (149) of the groove (148) extending perpendicularly to the corrugated plate body (110).
9. A storage container, the wall of which comprises a base layer and a sealing layer located inside the base layer, characterized in that, The sealing layer comprises a corrugated plate (100) according to any one of claims 1-8.
10. The storage container according to claim 9, characterized in that, The storage container is a land-based or floating storage container.