Corrugated Sheets and Storage Containers

Abstract

The present invention discloses a corrugated plate and a storage container. The corrugated plate includes a corrugated plate body, a first corrugated portion and a second corrugated portion. The corrugated plate body is circular. The first corrugated portion includes a first corrugation and a second corrugation perpendicularly intersecting the first corrugation, and the first corrugation and the second corrugation have a perpendicular intersection point. The second corrugated portion includes a third corrugation and a plurality of fourth corrugations, the third corrugation is arranged in a ring shape along the circumferential direction of the corrugated plate body, and the third corrugation is arranged around the perpendicular intersection point, and the plurality of fourth corrugations are radially extended in radial directions respectively, and the fourth corrugation has a proximal end close to the center of the corrugated plate body and a distal end arranged opposite to the proximal end, and the distal end is located at the peripheral edge of the corrugated plate body, and the plurality of fourth corrugations intersect with the third corrugation. The corrugation arrangement of the corrugated plate of the present invention is more uniform and coherent, so as to ensure the uniformity of the force on the corrugated plate and the convenience during manufacturing.

Description

Technical Field

[0001] The invention relates to the technical field of storage tanks, and in particular to a corrugated plate and a storage container. The storage container may be a large land-based storage tank. Background Art

[0002] With the continuous development of the petrochemical industry, large-scale cryogenic storage tanks are being used more and more widely. A land-based cylindrical storage tank for storing cryogenic liquefied gas is known. The bottom wall of the cylindrical storage tank is approximately circular, and a storage tank film is usually provided on the bottom wall. A corrugated structure is applied to the film to absorb the deformation that may occur due to the cold and hot stresses to which the film is subjected. The corrugated structure on the existing storage tank film is usually arranged in a ring array, and a circular iron plate is placed at the center of the ring. In this arrangement, the corrugations extending toward the center of the circle require a large number of end caps to be closed on the circular iron plate, resulting in the area having no standard corrugations for connection, which in turn results in poor shrinkage compensation effect in the area at low temperatures. In addition, the width of the corrugated structure on the existing storage tank film varies greatly, which may cause uneven stress on the tank film.

[0003] Therefore, it is necessary to provide a corrugated plate and a storage container to at least partially solve the above problems. Summary of the invention

[0004] In order to at least solve the above problems, the present invention provides a corrugated plate on one hand, the corrugated plate comprising:

[0005] A corrugated plate body, wherein the corrugated plate body is circular in structure;

[0006] a first corrugated portion, the first corrugated portion being disposed on the corrugated plate body, the first corrugated portion comprising a first corrugation and a second corrugation perpendicularly intersecting the first corrugation, the first corrugation and the second corrugation having a perpendicular intersection point; and

[0007] A second corrugated portion, the second corrugated portion is arranged on the corrugated plate body, the second corrugated portion includes a third corrugation and a plurality of fourth corrugations, the third corrugation is arranged in a ring shape along the circumferential direction of the corrugated plate body, the third corrugation is arranged around the vertical intersection point, a plurality of fourth corrugations are radially extended along the radial direction of the corrugated plate body respectively, the fourth corrugation has a proximal end close to the center of the corrugated plate body and a distal end arranged opposite to the proximal end, the distal end is located at the peripheral edge of the corrugated plate body, and the plurality of fourth corrugations intersect with the third corrugation.

[0008] Preferably, the second corrugated portion also includes a plurality of intermediate corrugations arranged between two adjacent fourth corrugations along the circumferential direction, the distal ends of the plurality of intermediate corrugations are located at the peripheral edge of the corrugated plate body, and the proximal ends of the plurality of intermediate corrugations are located radially outside the proximal ends of the fourth corrugations.

[0009] Preferably, the plurality of intermediate corrugations are divided into a plurality of groups according to radial length, the plurality of groups of intermediate corrugations are arranged in sequence along the radial direction, and the radial lengths of the plurality of groups of intermediate corrugations decrease in sequence along the radial direction away from the center of the corrugated plate body.

[0010] Preferably, the plurality of intermediate corrugations include a first group of intermediate corrugations extending along the radial direction, the first group of intermediate corrugations including a fifth corrugation, the fifth corrugation being evenly and spaced apart in the circumferential direction between two fourth corrugations adjacent to the fifth corrugation.

[0011] Preferably, the plurality of intermediate corrugations also include at least a second group of intermediate corrugations, the proximal ends of the second group of intermediate corrugations being arranged radially outside the proximal ends of the first group of intermediate corrugations, the second group of intermediate corrugations extending along the radial direction, the second group of intermediate corrugations including sixth corrugations, the number of the sixth corrugations being twice the number of the fifth corrugations, the sixth corrugations being evenly and spaced in the circumferential direction between the fifth corrugation and the fourth corrugation adjacent to the sixth corrugation.

[0012] Preferably, the multiple intermediate corrugations also include a third group of intermediate corrugations, the third group of intermediate corrugations includes a seventh corrugation pair, the seventh corrugation pair is symmetrically arranged on both sides of a specific intermediate corrugation, the proximal end of the specific intermediate corrugation is adjacent to the proximal end of the seventh corrugation pair in the radial direction and is radially inside the proximal end of the seventh corrugation pair, and the circumferential spacing between the seventh corrugation pair gradually decreases in the radial inward direction.

[0013] Preferably, the plurality of intermediate corrugations further include a fourth group of intermediate corrugations, the proximal end of the fourth group of intermediate corrugations being arranged radially outside the proximal end of the third group of intermediate corrugations, the fourth group of intermediate corrugations including an eighth corrugation pair, the eighth corrugation pair being symmetrically arranged on both sides of the specific intermediate corrugations, the eighth corrugation pair being arranged between the seventh corrugation pair, and the circumferential spacing between the eighth corrugation pairs gradually shrinks in a radially inward direction.

[0014] Preferably, the corrugated plate further comprises a standard end cap, which is substantially straight and has an arc-shaped end, and the proximal ends of the plurality of intermediate corrugations are all connected to the standard end cap.

[0015] Preferably, the first corrugated portion includes a plurality of first corrugations and a plurality of second corrugations perpendicularly intersecting the plurality of first corrugations, the plurality of first corrugations are spaced apart from each other and arranged in parallel, the plurality of second corrugations are spaced apart from each other and arranged in parallel, and the outer peripheral edge of the first corrugated portion generally has a circular contour.

[0016] Preferably, the corrugated plate further comprises a standard end cap, which is substantially straight and has an arc-shaped end, and the ends of the plurality of first corrugations and the ends of the plurality of second corrugations are provided with the standard end cap.

[0017] Preferably, the corrugated plate also includes a standard end cap and a connecting piece, the standard end cap is substantially straight and has an arc-shaped end, the ends of the plurality of first corrugations are provided with the standard end cap or are connected to the proximal end of the adjacent fourth corrugation through the connecting piece, and the ends of the plurality of second corrugations are provided with the standard end cap or are connected to the proximal end of the adjacent fourth corrugation through the connecting piece.

[0018] Preferably, the connecting member is straight or has a bending portion, and the bending angle of the bending portion is greater than or equal to 120°.

[0019] Preferably, the corrugated plate also includes a standard end cap and a special-shaped end cap, the standard end cap is approximately straight and has an arc-shaped end, the special-shaped end cap has a bending section and has an arc-shaped end, the ends of multiple first corrugations are provided with the standard end cap or the special-shaped end cap, and the ends of multiple second corrugations are provided with the standard end cap or the special-shaped end cap, and the special-shaped end cap and the standard end cap are partially arranged so that the arc-shaped end thereof is located between two adjacent fourth corrugations in the circumferential direction and radially outside the proximal end of the fourth corrugation in the radial direction.

[0020] Preferably, the bending angle of the bending section of the special-shaped end cap is greater than or equal to 120°.

[0021] Preferably, the first corrugated portion includes a first corrugation and a second corrugation perpendicularly intersecting the first corrugation, and the first corrugation and the second corrugation are respectively integrally connected with an adjacent fourth corrugation to form a cross-shaped structure.

[0022] Preferably, the area occupied by the first corrugated portion on the corrugated plate body is 5% to 20% of the area of ​​the entire corrugated plate body.

[0023] Preferably, the area occupied by the first corrugated portion on the corrugated plate body is 80% to 95% of the area of ​​the entire corrugated plate body.

[0024] The present invention further provides a storage container, comprising a bottom wall and side walls, wherein the bottom wall comprises the corrugated plate as described in any one of the above items.

[0025] Preferably, the storage container is a large land-based storage tank.

[0026] According to the corrugated plate and storage container of the above scheme of the present invention, the corrugation arrangement on the corrugated plate is more uniform and coherent by combining the cross corrugation arrangement with the annular corrugation arrangement, and the length and width of the corrugated plate grids between the corrugations are also more uniform. This scheme can ensure the uniformity of the force on the corrugated plate and the convenience during manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0028] Figure 1 A schematic diagram of a portion of a corrugated plate according to a first preferred embodiment of the present invention;

[0029] Figure 2 for Figure 1 An enlarged view of a portion of a corrugated sheet is shown;

[0030] Figure 3 for Figure 1 an enlarged view of another portion of the corrugated sheet shown;

[0031] Figure 4 for Figure 2 An enlarged view of a portion of a corrugated sheet is shown;

[0032] Figure 5 A schematic diagram of a portion of a corrugated plate according to a second preferred embodiment of the present invention;

[0033] Figure 6 for Figure 5 An enlarged view of a portion of a corrugated sheet is shown;

[0034] Figure 7 A schematic diagram of a portion of a corrugated plate according to a third preferred embodiment of the present invention;

[0035] Figure 8 A schematic diagram of a portion of a corrugated plate according to a fourth preferred embodiment of the present invention;

[0036] Fig. 9 for Figure 8An enlarged view of a portion of a corrugated sheet is shown. DETAILED DESCRIPTION

[0037] Now, with reference to the accompanying drawings, the specific embodiments of the present invention are described in detail. What is described here is only the preferred embodiment of the present invention, and those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and the other ways also fall within the scope of the present invention.

[0038] The present invention provides a corrugated plate 100 and a storage container having the corrugated plate 100 . The storage container may be, for example, a large land-based storage tank. Figure 1-Figure 9 A portion of a corrugated plate 100 according to a preferred embodiment of the present invention is shown, and the corrugated plate 100 forms a portion of a container wall of a storage container, and the container wall is preferably a bottom wall of the container. The storage container is preferably a cylindrical storage tank, and accordingly, the bottom wall of the container is formed in a circular shape. The corrugated plate 100 forming a portion of the bottom wall of the container will be described in detail below.

[0039] First of all, it should be noted that the directional terms and position terms mentioned in the present invention are only exemplary descriptions and not restrictive descriptions. Figure 1-Figure 9 The positions and directions of the components shown in the figure should be understood. The description of the position of the component should be understood as a relative position rather than an absolute position, and the description of the extension direction of the component should be understood as a relative direction rather than an absolute direction.

[0040] For example, in the present invention, "circumferential direction" and "radial direction" refer to the circumferential direction and radial direction relative to the circular bottom wall of the storage container or the circular corrugated plate 100 on the bottom wall; "radial inner side" and "proximal end" refer to the position close to the center of the bottom wall in the radial direction, and "radial outer side" and "distal end" refer to the position far away from the center of the bottom wall in the radial direction.

[0041] Figure 1 FIG. 1 shows a portion of a corrugated plate 100 according to a preferred embodiment of the present invention. For the sake of simplicity, Figure 1 Only about 1 / 4 of the corrugated plate 100 is shown in the figure, and it can be understood that the other parts of the corrugated plate 100 have the same structure. The corrugated plate 100 includes a flat plate-shaped corrugated plate body 110 and a first corrugated portion 120 and a second corrugated portion 130 formed on the corrugated plate body 110. The corrugated plate body 110 is configured in a circular shape, the first corrugated portion 120 is arranged on the radial inner side of the corrugated plate body 110, and the second corrugated portion 130 is arranged on the radial outer side of the corrugated plate body 110.

[0042] like Figure 2 and Figure 4As shown, the first corrugated portion 120 includes a plurality of first corrugations 121 and a plurality of second corrugations 122 respectively arranged perpendicularly to the plurality of first corrugations 121, and the plurality of first corrugations and the plurality of second corrugations form a plurality of perpendicular intersections. For example, the plurality of first corrugations 121 may be arranged in a transverse direction. The plurality of first corrugations 121 are spaced apart from each other and arranged in parallel, and the plurality of second corrugations 122 may be arranged in a longitudinal direction, and the plurality of second corrugations 122 are spaced apart from each other and arranged in parallel. Preferably, the distances between the plurality of first corrugations 121 are equal, and the distances between the plurality of second corrugations 122 are equal.

[0043] like Figure 2 and Figure 3 As shown, the outer peripheral edge of the first corrugated portion 120 has a substantially circular profile, and the second corrugated portion 130 is arranged around the first corrugated portion 120. The second corrugated portion 130 includes a plurality of third corrugations 131 and a plurality of fourth corrugations 132, each of the plurality of third corrugations 131 is arranged in an annular shape along the circumferential direction of the corrugated plate body 110, and the plurality of third corrugations 131 are arranged in sequence in a radial direction of the corrugated plate body 110, that is, a plurality of annular third corrugations 131 are arranged in sequence in a circumferential direction of the corrugated plate body 110, and the third corrugations 131 are arranged radially outside the first corrugation 121 and the second corrugation 122 around the vertical intersection point thereof. The plurality of fourth corrugations 132 are arranged to intersect with the plurality of third corrugations 131, respectively. The plurality of fourth corrugations 132 are arranged radially, and each of the plurality of fourth corrugations 132 extends in the radial direction of the corrugated plate body 110. The fourth corrugation 132 has a proximal end close to the center of the corrugated plate body 110 and a distal end away from the center of the corrugated plate body 110. Figure 3 and Figure 4 The distal end of the fourth corrugation 132 is located at the peripheral edge of the corrugated body, and can be connected with the corrugated structure on the side wall of the storage container through the connection structure 180. The proximal end of the fourth corrugation 132 is located near the peripheral edge of the first corrugated part 120, and can interact with at least one of the first corrugation 121 and the second corrugation 122 on the inner side, which will be described in detail later.

[0044] In a preferred embodiment, the area occupied by the first corrugated portion 120 on the corrugated plate body 110 is 5% to 20% of the area of ​​the entire corrugated plate body 110. The area occupied by the second corrugated portion 130 on the corrugated plate body 110 is 80% to 95% of the area of ​​the entire corrugated plate body 110. For example, the area occupied by the first corrugated portion 120 on the corrugated plate body 110 can be set to 5% or 10% of the area of ​​the entire corrugated plate body 110, and accordingly, the area occupied by the second corrugated portion 130 on the corrugated plate body 110 can be set to 95% or 90% of the area of ​​the entire corrugated plate body 110. In a preferred embodiment, the ratio of the area occupied by the first corrugated portion 120 on the corrugated plate body 110 to the area occupied by the second corrugated portion 130 on the corrugated plate body 110 is 1:9. It is understandable that those skilled in the art can set the area occupied by the first corrugated portion 120 and the second corrugated portion 130 to other values ​​according to actual needs.

[0045] For the plurality of fourth corrugations 132, as they extend away from the center of the corrugated plate 100 in the radial direction, the spacing between adjacent fourth corrugations 132 becomes larger and larger. In order to ensure the rationality and uniformity of the plate grid spacing (that is, the spacing between adjacent corrugations) on the entire corrugated plate 100, as shown in FIG. Figure 2-Figure 4 As shown, preferably, the second corrugated portion 130 further includes a plurality of intermediate corrugations 140 arranged between two adjacent fourth corrugations 132 in the circumferential direction. Similar to the distal ends of the plurality of fourth corrugations 132, the distal ends of the plurality of intermediate corrugations 140 are also located at the peripheral edge of the corrugated plate body 110, and can be connected with the corrugated structure provided on the side wall of the storage container through the connection structure 180. The proximal ends of the plurality of intermediate corrugations 140 are spaced apart from the proximal ends of the fourth corrugations 132 by a first distance in the radial direction. Specifically, the proximal ends of the plurality of intermediate corrugations 140 are located radially outside the proximal ends of the fourth corrugations 132, that is, compared with the proximal ends of the fourth corrugations 132, the proximal ends of the intermediate corrugations 140 are farther from the peripheral edge of the first corrugated portion 120.

[0046] Preferably, a plurality of intermediate corrugations 140 are arranged between each pair of adjacent fourth corrugations 132, and the arrangement number and arrangement form of the plurality of intermediate corrugations 140 between each pair of adjacent fourth corrugations 132 are exactly the same. For the sake of brevity, only the plurality of intermediate corrugations 140 between one pair of adjacent fourth corrugations 132 are described in detail below.

[0047] like Figure 2 and Figure 4As shown, the plurality of intermediate corrugations 140 are divided into a plurality of groups according to their radial lengths. The plurality of intermediate corrugations are arranged in sequence along the radial direction, and along the radial direction away from the center of the corrugated plate body 110, the radial lengths of the plurality of intermediate corrugations decrease in sequence.

[0048] The plurality of intermediate corrugations 140 include a first group of intermediate corrugations extending in a radial direction, and the first group of intermediate corrugations include a fifth corrugation 141 extending in a radial direction, and except that the proximal end of the fifth corrugation 141 is far away from the proximal end of the fourth corrugation 132, the structure of the fifth corrugation 141 is completely the same as that of the fourth corrugation 132. The fifth corrugation 141 is located in the middle of two fourth corrugations 132 adjacent to the fifth corrugation 141 in the circumferential direction, that is, the angles between the fifth corrugation 141 and the two fourth corrugations 132 adjacent to the fifth corrugation 141 are equal, and this solution can improve the uniformity of the corrugation arrangement on the corrugated plate 100.

[0049] like Figure 2 and Figure 3 As shown, the plurality of intermediate corrugations 140 further include a third group of intermediate corrugations, the proximal end of the third group of intermediate corrugations being arranged radially outside the proximal end of the first group of intermediate corrugations. The third group of intermediate corrugations includes a seventh corrugation pair 142, the seventh corrugation pair 142 includes a pair of seventh corrugations 142a, and the pair of seventh corrugations 142a are symmetrically arranged on both sides of the fifth corrugation 141 (as an example of a specific intermediate corrugation). The proximal end of the fifth corrugation 141 is adjacent to the seventh corrugation pair 142 in the radial direction and is located radially inside the proximal end of the seventh corrugation pair 142, that is, compared with the proximal end of the fifth corrugation 141, the proximal end of the seventh corrugation 142a is farther from the outer peripheral edge of the first corrugation portion 120. The proximal end of the seventh corrugation 142a is spaced apart from the proximal end of the fifth corrugation 141 by a second distance in the radial direction, and the second distance is preferably greater than the above-mentioned first distance. Preferably, the seventh corrugation pair 142 is formed roughly in a fan shape, and the circumferential spacing between the seventh corrugation pairs 142 tapers radially inwardly. Further preferably, the taper angle between the seventh corrugation pairs 142 is smaller than the taper angle between adjacent fourth corrugations 132 extending in the radial direction.

[0050] Preferably, the plurality of intermediate corrugations 140 further include a fourth group of intermediate corrugations, the proximal end of the fourth group of intermediate corrugations being arranged radially outside the proximal end of the third group of intermediate corrugations. The fourth group of intermediate corrugations includes an eighth corrugation pair 143, the eighth corrugation pair 143 being arranged between a pair of seventh corrugations 142a in the circumferential direction, but the proximal end of the eighth corrugation pair 143 is further away from the outer peripheral edge of the first corrugation portion 120 than the proximal end of the seventh corrugation pair 142. The eighth corrugation pair 143 includes a pair of eighth corrugations 143a, the pair of eighth corrugations 143a being symmetrically arranged on both sides of the fifth corrugation 141, the proximal end of the eighth corrugation 143a being spaced apart from the proximal end of the seventh corrugation 142a by a third distance in the radial direction, and the third distance is preferably greater than the above-mentioned second distance. Similar to the seventh corrugation pair 142, preferably, the eighth corrugation pair 143 is also roughly formed in a fan shape, and the circumferential spacing between the eighth corrugation pairs 143 gradually decreases in the radial inward direction. Further preferably, the tapering angle between the eighth corrugation pairs 143 is smaller than the tapering angle between adjacent fourth corrugations 132 extending in the radial direction.

[0051] As described above, as the adjacent fourth corrugations 132 extend away from the center of the corrugated plate 100 in the radial direction, the spacing between the adjacent fourth corrugations 132 becomes larger and larger, and the seventh corrugation pair 142 and the eighth corrugation pair 143 arranged in sequence in the radial direction can reduce the larger spacing between the fourth corrugations 132, thereby ensuring the rationality and uniformity of the horizontal and vertical corrugation spacing on the entire corrugated plate 100. Although in the illustrated embodiment, the plurality of intermediate corrugations 140 include two corrugation pairs arranged in sequence in the radial direction, it can be understood that those skilled in the art can further arrange more corrugation pairs between two adjacent fourth corrugations 132 as needed or according to the specific size of the corrugated plate 100, or can also arrange only one corrugation pair.

[0052] like Figure 3 and Figure 4 As shown, the corrugated plate 100 further includes a standard end cap 150, which is substantially straight and has a smooth arc-shaped end, and the proximal ends of the plurality of intermediate corrugations 140 are connected to the standard end cap 150. Exemplarily, the proximal ends of the plurality of intermediate corrugations 140 can be connected to the standard end cap 150 by welding.

[0053] like Figure 4 As shown, in a preferred embodiment, the corrugated plate 100 also includes a connector 160, which can be used to connect the first corrugated portion 120 and the second corrugated portion 130, and specifically can connect part of the first corrugation 121 and the second corrugation 122 with the proximal end of the fourth corrugation 132.

[0054] Further references Figure 4, the end of part of the first corrugation 121 is connected to the proximal end of the adjacent fourth corrugation 132 through the connector 160, and the end of part of the second corrugation 122 is connected to the proximal end of the adjacent fourth corrugation 132 through the connector 160. The connector 160 can be constructed to be straight or have a bending portion, and the specific shape of the connector 160 varies depending on the relative position between the end of the first corrugation 121 or the second corrugation 122 and the proximal end of the fourth corrugation 132, but preferably, the bending angle of the bending portion is greater than or equal to 120°. The above scheme can maintain the continuity of the corrugations on the corrugated plate 100, so that the corrugated plate 100 is subjected to more uniform and reasonable force. The other ends of the first corrugation 121 or the second corrugation 122 that are not connected to the fourth corrugation 132 through the connector 160 are closed by a standard end cap 150.

[0055] Figure 5 and Figure 6 A portion of a corrugated plate according to a second preferred embodiment of the present invention is shown. The corrugated plate according to this embodiment has a structure substantially the same as that of the above-mentioned corrugated plate, except that the first corrugated portion 120 and the second corrugated portion 130 of the corrugated plate according to this embodiment only have positional interaction without any connection.

[0056] like Figure 5 and Figure 6 As shown, in this embodiment, the corrugated plate 100 includes a special-shaped end cap 170. Similar to the standard end cap 150, the special-shaped end cap 170 also has a smooth arc-shaped end; and different from the standard end cap 150, the special-shaped end cap 170 has a bending section. The specific shape of the special-shaped end cap 170 varies depending on the relative position between the end of the first corrugation 121 or the second corrugation 122 and the proximal end of the fourth corrugation 132, but preferably, the bending angle of the bending section is greater than or equal to 120°. Figure 6 As shown, the ends of some first corrugations 121 are provided with special-shaped end caps 170, and the ends of some second corrugations 122 are provided with special-shaped end caps 170. The positions of the special-shaped end caps 170 are arranged so that the arc-shaped ends thereof are located between two adjacent fourth corrugations 132 in the circumferential direction and radially outside the proximal end of the fourth corrugation 132 in the radial direction. The ends of the other first corrugations 121 and second corrugations 122 that are not provided with special-shaped end caps 170 are closed by standard end caps 150. Preferably, the arc-shaped ends of some standard end caps 150 also fall between two adjacent fourth corrugations 132 in the circumferential direction and radially outside the proximal end of the fourth corrugation 132 in the radial direction. This solution can also improve the force uniformity of the corrugated plate 100, making the overall layout of the corrugated plate 100 more regular and aesthetically pleasing.

[0057] like Figure 7As shown, in the third preferred embodiment of the present application, the area occupied by the first corrugated portion 120 on the corrugated plate body 110 is greater than the area occupied by the second corrugated portion 130 on the corrugated plate body 110. Exemplarily, the area occupied by the first corrugated portion 120 on the corrugated plate body 110 may be 80% to 95% of the area of ​​the entire corrugated plate body 110, and the area occupied by the second corrugated portion 130 on the corrugated plate body 110 may be 5% to 20% of the area of ​​the entire corrugated plate body 110. For example, the area occupied by the first corrugated portion 120 on the corrugated plate body 110 may be set to 90% or 95% of the area of ​​the entire corrugated plate body 110, and accordingly, the area occupied by the second corrugated portion 130 on the corrugated plate body 110 may be set to 10% or 5% of the area of ​​the entire corrugated plate body 110. In a preferred embodiment, the ratio of the area occupied by the first corrugated portion 120 on the corrugated plate body 110 to the area occupied by the second corrugated portion 130 on the corrugated plate body 110 may be set to 9:1.

[0058] In the illustrated embodiment, the second corrugated portion 130 includes two third corrugations 131 arranged in an annular shape and arranged sequentially in the radial direction. It is understood that in other embodiments not shown, the second corrugated portion 130 may also include other numbers of third corrugations 131, such as three or one third corrugation 131. In this embodiment, the ends of the plurality of first corrugations 121 and the ends of the plurality of second corrugations 122 are both provided with standard end caps 150.

[0059] Figure 8 and Fig. 9 A portion of a corrugated plate according to a fourth preferred embodiment of the present invention is shown. The corrugated plate according to this embodiment has substantially the same structure as the corrugated plate according to the first embodiment, and only the differences are described in detail below.

[0060] like Figure 8 and Fig. 9 As shown, in this embodiment, the first corrugated portion 120 includes a first corrugation 121 and a second corrugation 122 perpendicularly intersecting the first corrugation 121, and the perpendicular intersection point of the first corrugation 121 and the second corrugation 122 coincides with the center of the corrugated plate body 110. The first corrugation 121 and the second corrugation 122 are respectively connected integrally with the adjacent fourth corrugation 132 extending in the radial direction to form a cross-shaped structure.

[0061] like Fig. 9As shown, in addition to the first group of intermediate corrugations (fifth corrugation 141), the plurality of intermediate corrugations also include a second group of intermediate corrugations, the proximal end of the second group of intermediate corrugations is arranged radially outside the proximal end of the first group of intermediate corrugations and radially inside the third group of intermediate corrugations, and the second group of intermediate corrugations extends in the radial direction. The second group of intermediate corrugations includes a sixth corrugation 144, and the radial length of the sixth corrugation 144 is shorter than the radial length of the fifth corrugation 141. The number of the sixth corrugation 144 is twice the number of the fifth corrugation 141, for example, the number of the fifth corrugation 141 is 1, and the number of the sixth corrugation 144 is 2. The sixth corrugation 144 is uniformly and spaced in the circumferential direction between the fifth corrugation 141 and the fourth corrugation 132 adjacent to the sixth corrugation 144. This solution can make the spacing between the corrugations more uniform and balanced.

[0062] In the illustrated preferred embodiment, the plurality of intermediate corrugations include three rows of second-group intermediate corrugations arranged in sequence along the radial direction. Along the radial direction away from the center of the corrugated plate body 110, the radial lengths of the three rows of second-group intermediate corrugations decrease in sequence, but the number of corrugations included in each row of the second-group intermediate corrugations increases in sequence. In the illustrated embodiment, along the radial direction away from the center of the corrugated plate body 110, the number of second-group intermediate corrugations between adjacent fourth corrugations 132 is 2, 4, and 8, respectively, and these intermediate corrugations are arranged evenly and at intervals to further balance the spacing between the horizontal and vertical corrugations. It is understood that those skilled in the art can also set other numbers of intermediate corrugations as needed or according to the specific size of the corrugated plate 100.

[0063] The present invention further provides a storage container (not shown), which is, for example, a storage container for storing LNG. The storage container of a preferred embodiment of the present invention is a cylindrical storage tank, comprising a bottom wall and a circle of side walls surrounding the bottom wall and extending toward the top side, and the bottom wall comprises the corrugated plate 100 as described above. The storage container of the present invention can be a large land-based storage tank.

[0064] According to the corrugated plate and storage container of the above scheme of the present invention, the corrugation arrangement on the corrugated plate is more uniform and coherent, and the length and width of the plate grid between the corrugations are more uniform by adopting a combination of a cross corrugation arrangement and a circular corrugation arrangement. This scheme can ensure the uniformity of the force on the corrugated plate and the convenience during manufacturing.

[0065] The above description of various embodiments of the present invention is provided to one of ordinary skill in the relevant art for the purpose of description. It is not intended that the present invention be exclusive or limited to a single disclosed embodiment. As above, a person of ordinary skill in the field of the above teachings will understand the various substitutions and variations of the present invention. Therefore, although some alternative embodiments are specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. The present invention is intended to include all substitutions, modifications and variations of the present invention described herein, as well as other embodiments that fall within the spirit and scope of the present invention described above.

Claims

1. A corrugated plate for forming the bottom wall of a storage container, characterized in that: The corrugated plate comprises: A corrugated plate body (110), wherein the corrugated plate body (110) is circular in shape; a first corrugated portion (120), the first corrugated portion (120) being arranged on the corrugated plate body (110), the first corrugated portion (120) comprising a plurality of first corrugations (121) and a plurality of second corrugations (122) respectively perpendicularly intersecting the plurality of first corrugations (121), the plurality of first corrugations (121) being spaced apart from each other and arranged in parallel, the plurality of second corrugations (122) being spaced apart from each other and arranged in parallel, the outer peripheral edge of the first corrugated portion (120) having a substantially circular contour, the plurality of first corrugations having a perpendicular intersection point with the plurality of second corrugations; and a second corrugated portion (130), the second corrugated portion (130) being arranged on the corrugated plate body (110), the second corrugated portion (130) comprising a third corrugation (131) and a plurality of fourth corrugations (132), the third corrugation (131) being arranged in a ring shape along the circumferential direction of the corrugated plate body (110), the third corrugation being arranged around the vertical intersection point, the plurality of fourth corrugations (132) being radially extending along the radial direction of the corrugated plate body (110), the fourth corrugation (132) having a proximal end close to the center of the corrugated plate body and a distal end arranged opposite to the proximal end, the distal end being located at the peripheral edge of the corrugated plate body (110), the plurality of fourth corrugations (132) intersecting with the third corrugation (131), The corrugated plate further comprises a standard end cap (150) and a special-shaped end cap (170); the standard end cap (150) is substantially straight and has an arc-shaped end; the special-shaped end cap (170) has a bent section and has an arc-shaped end; the ends of the plurality of first corrugations (121) are provided with the standard end cap (150) or the special-shaped end cap (170); and the ends of the plurality of second corrugations (122) are provided with the standard end cap (150) or the special-shaped end cap (170); portions of the special-shaped end cap (170) and the standard end cap (150) are arranged such that the arc-shaped ends thereof are located between two adjacent fourth corrugations (132) in the circumferential direction and are located radially outside the proximal end of the fourth corrugation (132) in the radial direction; Wherein, the bending angle of the bending section of the special-shaped end cap (170) is greater than or equal to 120°.

2. The corrugated plate according to claim 1, characterized in that: The second corrugated portion (130) further comprises a plurality of intermediate corrugations (140) arranged between two adjacent fourth corrugations (132) along the circumferential direction, wherein the distal ends of the plurality of intermediate corrugations (140) are located at the peripheral edge of the corrugated plate body (110), and the proximal ends of the plurality of intermediate corrugations (140) are located radially outside the proximal ends of the fourth corrugations (132).

3. The corrugated plate according to claim 2, characterized in that: The plurality of intermediate corrugations (140) are divided into a plurality of groups according to radial length, the plurality of groups of intermediate corrugations are arranged in sequence along the radial direction, and the radial lengths of the plurality of groups of intermediate corrugations decrease in sequence along the radial direction away from the center of the corrugated plate body (110).

4. The corrugated plate according to claim 3, characterized in that: The plurality of intermediate corrugations include a first group of intermediate corrugations, the first group of intermediate corrugations extending along the radial direction, the first group of intermediate corrugations including a fifth corrugation (141), the fifth corrugation being evenly and spaced apart in the circumferential direction between two fourth corrugations (132) adjacent to the fifth corrugation.

5. The corrugated plate according to claim 4, characterized in that The plurality of intermediate corrugations also include at least a second group of intermediate corrugations, the proximal end of the second group of intermediate corrugations being arranged radially outside the proximal end of the first group of intermediate corrugations, the second group of intermediate corrugations extending along the radial direction, the second group of intermediate corrugations including sixth corrugations (144), the number of the sixth corrugations being twice the number of the fifth corrugations (141), and the sixth corrugations (144) being uniformly and spaced in the circumferential direction between the fifth corrugation (141) and the fourth corrugation (132) adjacent to the sixth corrugation.

6. The corrugated plate according to claim 4 or 5, characterized in that: The plurality of intermediate corrugations also include a third group of intermediate corrugations, the third group of intermediate corrugations including a seventh corrugation pair (142), the seventh corrugation pair (142) being symmetrically arranged on both sides of a specific intermediate corrugation, the proximal end of the specific intermediate corrugation being adjacent to the proximal end of the seventh corrugation pair in the radial direction and being radially inner of the proximal end of the seventh corrugation pair, and the circumferential spacing between the seventh corrugation pair (142) gradually decreases in the radial inward direction.

7. The corrugated plate according to claim 6, characterized in that The plurality of intermediate corrugations (140) further include a fourth group of intermediate corrugations, the proximal end of the fourth group of intermediate corrugations being arranged radially outside the proximal end of the third group of intermediate corrugations, the fourth group of intermediate corrugations including an eighth corrugation pair (143), the eighth corrugation pair (143) being symmetrically arranged on both sides of the specific intermediate corrugations, the eighth corrugation pair (143) being arranged between the seventh corrugation pair (142), and the circumferential spacing between the eighth corrugation pair (143) gradually decreases in a radially inward direction.

8. The corrugated plate according to claim 2, characterized in that: The proximal ends of the plurality of intermediate corrugations (140) are all connected to the standard end cap (150).

9. The corrugated plate according to claim 1, characterized in that: The area occupied by the first corrugated portion (120) on the corrugated plate body (110) is 5% to 20% of the area of ​​the entire corrugated plate body (110).

10. The corrugated plate according to claim 1, characterized in that The area occupied by the first corrugated portion (120) on the corrugated plate body (110) is 80% to 95% of the area of ​​the entire corrugated plate body (110).

11. A storage container, characterized in that: The storage container comprises a bottom wall and side walls, and the bottom wall comprises the corrugated plate (100) according to any one of claims 1 to 10.

12. The storage container according to claim 11, characterized in that: The storage container is a large land-based storage tank.

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