Corrugated sheet and storage container having a smooth top surface and draw beads

Abstract

A corrugated panel and a storage container having a smooth top surface and drawbead are disclosed. The corrugated panel includes a corrugated panel body, longitudinal corrugations and transverse corrugations, and a junction portion including a smooth top surface and four drawbeads extending from the top surface to the corrugated panel body, the top surface smoothly transitioning to the drawbeads, wherein a general direction of extension of each drawbead and the transverse direction, the longitudinal direction, and a height direction perpendicular to the corrugated panel body all cross.

Description

Technical Field

[0001] This invention relates to the field of liquefied gas storage tanks for marine engineering equipment, particularly ships and other marine equipment, and more particularly to a corrugated plate for a liquefied gas storage tank used in transportation equipment, especially ships and other marine equipment, and a storage container including the corrugated plate. This storage container is particularly suitable for liquefied gas storage tanks for ships and other marine equipment, wherein the liquefied gas includes, for example, liquefied natural gas, liquid nitrogen, liquid oxygen, liquid hydrogen, and liquid helium. Background Technology

[0002] Liquefied natural gas (LNG) has long been the preferred energy source to replace oil due to its green, environmentally friendly, and efficient advantages, and has become one of the fastest-growing energy industries in the world.

[0003] 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.

[0004] In LNG storage tanks, the corrugated plates 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 plates are particularly important. The material uniformity, smoothness, and strength of existing corrugated plates, especially at the intersections of transverse and longitudinal corrugations, need to be improved.

[0005] 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 problems. Summary of the Invention

[0006] The purpose of this invention is to provide a corrugated sheet. The corrugated sheet of this invention has a smooth and rigid overall shape, while exhibiting relatively rapid material deformation at specific locations. This ensures both the overall strength and stability of the corrugated sheet, while also demonstrating good elasticity, shrinkage capacity, and tensile strength. The corrugated sheet provided by this invention also maximizes the performance of the raw materials.

[0007] The present invention also provides a storage container having the corrugated plate, such as a storage container for storing LNG, wherein the corrugated plate can be used as a sealing layer of the storage container. Specifically, the corrugated plate is cut into standard parts and assembled in the storage container as a sealing layer. The sealing layer of the present invention has good flatness, causes little damage to the insulation layer structure, and can reduce the impact of the sealing layer on the strength of the insulation box; the sealing layer structure of the present invention determines that the sealing layer can be manufactured to be thinner, thereby reducing the overall thermal conductivity of the heat storage container and improving the insulation effect.

[0008] According to one aspect of the present invention, a corrugated plate for a transport device is provided, the corrugated plate comprising a corrugated plate body, longitudinal corrugations and transverse corrugations formed on the corrugated plate body, and an intersection portion at the intersection of the longitudinal corrugations and the transverse corrugations, wherein the height of the longitudinal corrugations is less than the height of the transverse corrugations, and the maximum transverse dimension of the longitudinal corrugations is less than the maximum longitudinal dimension of the transverse corrugations.

[0009] The intersecting portion includes a smooth top surface and four draw bars extending from the top surface to the corrugated plate body. The top surface smoothly transitions to the draw bars, wherein the general extension direction of each draw bar intersects with the transverse direction, the longitudinal direction, and the height direction perpendicular to the corrugated plate body.

[0010] Furthermore, the height of the confluence portion is greater than the height of both the longitudinal and transverse corrugations.

[0011] Wherein, the minimum lateral dimension of the top surface is more than twice the minimum longitudinal dimension of the top surface, and in the top view of the corrugated plate, the main body of each drawbead extends in a direction that intersects both the longitudinal and lateral directions, the bottom segment of each drawbead extends in the lateral direction, and the main body smoothly transitions to the bottom segment.

[0012] In one embodiment, the longitudinal dimension of the top surface is smaller than its transverse dimension.

[0013] In one embodiment, the top surface has four contour lines defining the top surface, the four contour lines being sequentially connected between the four draw beads, each of the four contour lines being recessed towards the center of the top surface at its middle position.

[0014] In one embodiment, of the four contour lines, the two contour lines located at both ends of the top surface in the longitudinal direction have a concave first radius of curvature, and the two contour lines located at both ends of the top surface in the transverse direction have a concave second radius of curvature, wherein the first radius of curvature is greater than or equal to the second radius of curvature.

[0015] In one embodiment, the angle between any location on the top surface and a reference plane parallel to the corrugated plate body is smaller than the angle between the total extension direction of the drawbead and the reference plane.

[0016] In one embodiment, the thickness of each drawbead gradually decreases in the direction from its top to its bottom.

[0017] In one embodiment, the projection of the top surface into a projection plane defined by the height and lateral directions is a curve, and the projection into a projection plane defined by the height and longitudinal directions is a straight line segment.

[0018] In one embodiment, the confluence portion further includes a first side surface connecting the top surface and the longitudinal corrugations, and a second side surface connecting the top surface and the transverse corrugations, the first side surface and the second side surface being substantially perpendicular to the corrugated plate body.

[0019] In one embodiment, the location where the second side intersects with the transverse corrugation is recessed downward relative to the top of the transverse corrugation.

[0020] According to another aspect of the invention, a storage container for liquefied gas is provided, the wall of the storage container comprising a wall base layer and a sealing layer located inside the wall base layer, the sealing plate comprising a corrugated plate according to any one of the above embodiments.

[0021] In one embodiment, the sealing layer includes:

[0022] Central section;

[0023] At least one annular segment is provided around the central segment, each annular segment comprising:

[0024] Multiple sealing plates, said multiple sealing plates being cut from the corrugated plate; and

[0025] A first sealing connector is disposed between adjacent sealing plates in the circumferential direction and fixes both of them to the base layer.

[0026] In one embodiment, there are at least two annular segments arranged sequentially around each other, and the sealing layer further includes a second annular segment connector disposed between adjacent annular segments and fixing the adjacent annular segments to the base layer.

[0027] In one embodiment, the transverse and longitudinal corrugations of each sealing plate of the annular section constitute the radial and circumferential corrugations of the annular section, respectively. The radial inner ends of a portion of the radial corrugations extend to the central section, while the radial inner ends of another portion of the radial corrugations are located in the middle of the annular section and away from the central section. The maximum circumferential distance between adjacent radial corrugations is within a predetermined range, and a sealing end cap is installed at the radial inner end of each radial corrugation.

[0028] In one embodiment, the wall is a rectangular wall, and the sealing layer includes arrayed sealing plates arranged in an array. Adjacent arrayed sealing plates along a first horizontal direction are connected and sealed by a first sealing connector, and adjacent arrayed sealing plates along a second horizontal direction are sealed and connected by a second sealing connector.

[0029] In one embodiment, the base layer also includes an array of base plates arranged in an array, with gaps between adjacent base plates, and the array of sealing plates having corrugations that extend in the same direction as each of the gaps, the corrugations covering the gaps.

[0030] In one embodiment, the storage container is a marine equipment liquefied gas storage container or a land-based cryogenic liquid storage device. Attached Figure Description

[0031] The accompanying drawings of this invention are for illustrative purposes only.

[0032] Figure 1 This is a perspective view of a corrugated plate according to some preferred embodiments of the present invention;

[0033] Figure 2 for Figure 1 The projection of the corrugated plate in the projection plane defined by the horizontal and vertical directions;

[0034] Figure 3 For along Figure 1 A cross-sectional view taken from line AA in the diagram;

[0035] Figure 4 for Figure 1 The projection of the corrugated plate in the projection plane defined by the longitudinal and height directions;

[0036] Figure 5 For along Figure 1 A cross-sectional view taken from the BB line in the diagram;

[0037] Figure 6 for Figure 1 Top view of the intersection section;

[0038] Figure 7 A perspective view of a corrugated plate according to another preferred embodiment of the present invention;

[0039] Figure 8 for Figure 7 The corrugated plate shown is projected onto a projection plane defined by the lateral and height directions.

[0040] Figure 9 for Figure 7 The corrugated plate shown is projected onto a projection plane defined by the longitudinal and height directions.

[0041] Figure 10 for Figure 7 The top view of the corrugated plate shown;

[0042] Figure 11 A partial top view of the bottom wall of a storage container according to some preferred embodiments;

[0043] Figure 12 for Figure 11 A roughly complete top view of the bottom wall sealing layer;

[0044] Figure 13 A perspective view of another wall surface of a storage container according to some preferred embodiments;

[0045] Figure 14 A perspective view of a corrugated plate according to some other preferred embodiments of the present invention;

[0046] Figure 15 for Figure 14 The projection of the corrugated plate in the projection plane defined by the horizontal and vertical directions;

[0047] Figure 16 for Figure 14 The projection of the corrugated plate in the projection plane defined by the longitudinal and height directions;

[0048] Figure 17 For along Figure 14 A cross-sectional view taken from line AA in the diagram;

[0049] Figure 18 For along Figure 14 A cross-sectional view taken from the BB line in the diagram;

[0050] Figure 19 This is a top view of the corrugated plate.

[0051] Figure label:

[0052] 500, 100, 100' corrugated sheets

[0053] 50, 10, 10' corrugated sheet main body

[0054] 60, 20, 20' longitudinal corrugations

[0055] 70, 30, 30' transverse corrugations

[0056] The intersection of 80, 40, and 40'

[0057] 81, 41 top surface

[0058] The first projected profile of the top surface of 811, 46

[0059] The second projected profile of the top surface of 812, 45

[0060] 8211, 8212 outline boundaries

[0061] 82 drawbar

[0062] 821 top section

[0063] 822 bottom section

[0064] 83 Second side view

[0065] 84 ravines

[0066] 85 First side view

[0067] 42 Transverse end face

[0068] 43 Longitudinal end face

[0069] 44 tie bars

[0070] 441 edges

[0071] 411 straight segment

[0072] 4121 Arched

[0073] 412 protrusion

[0074] 400, 510 grassroots

[0075] 4110 base unit board

[0076] 410 Basic Ring Section

[0077] 420 Basic Central Section

[0078] 310 Central Section

[0079] 3110 center sealing plate

[0080] 320 Circular Section

[0081] 3210 Annular Section Sealing Plate

[0082] 520 array-type sealing plate

[0083] 340 Circular Section Second Connector

[0084] 5210 First Sealing Connection

[0085] 5220 Second Sealing Connection

[0086] 420a First Ring Section

[0087] 420b Second Ring Section

[0088] 420c Third Ring Section

[0089] 350, 5110 gap

[0090] Another part of the 360 ​​radial corrugated plate

[0091] 380 part of radial corrugated plate

[0092] 370 sealing end cap

[0093] 41' Main body section

[0094] 411' center top surface

[0095] 412' tie rod

[0096] 4121' spine

[0097] 4101' Approximate straight line segment

[0098] 42' lateral section

[0099] 421' Top of the side section

[0100] 422' protrusion

[0101] 43' connecting section

[0102] The middle position in the transverse direction of the 431' connecting section

[0103] The position where the top and side sections of the 432' connecting segment meet.

[0104] The top of the 433' connecting section is where it connects to the main body section.

[0105] 44' ravine

[0106] 45' side view

[0107] 4111' First Boundary Profile

[0108] 4112' Second Boundary Profile

[0109] 4113' Third Boundary Profile

[0110] 4114' Fourth Boundary Profile

[0111] 4115' Fifth Boundary Profile

[0112] 4116' Sixth boundary profile. Detailed Implementation

[0113] The present invention provides a corrugated plate for a liquefied gas storage tank for marine engineering equipment, especially marine equipment such as ships, and a liquefied gas storage container having the corrugated plate, wherein the storage container is a liquefied gas storage container for marine equipment or a land-based cryogenic liquid device.Figures 1-10 , Figures 15-19 A schematic diagram of a corrugated plate according to a preferred embodiment of the present invention is shown. Figures 11-13 A partial schematic diagram of the wall of a storage container according to a preferred embodiment of the present invention is shown.

[0114] First, it should be noted that the directional and positional terms mentioned in this invention are merely illustrative and not limiting. Descriptions of the position of components should be understood as relative positions rather than absolute positions, and descriptions of the extension direction of components should be understood as relative directions rather than absolute directions. For directional and positional terms related to corrugated plates, please refer to [reference needed]. Figures 1-10 The positions and orientations of the various components shown are explained. For example, terms such as "top side," "upward," "bottom side," and "downward" for the components of the processing device can be found by referring to... Figures 1-5 , Figures 7-9 The placement orientation of the corrugated plate shown is used for explanation; "lateral direction" and "longitudinal direction" are two directions perpendicular to each other, where the lateral direction is shown by D2 and the longitudinal direction is shown by D1. The lateral direction D2 and the longitudinal direction D1 together define the extension plane of the corrugated plate body 50. The height direction D3 is a direction perpendicular to the corrugated plate body 50.

[0115] First refer to Figure 1 The corrugated plate 500 includes a flat corrugated plate body 50, transverse corrugations 70 and longitudinal corrugations 60 formed on the corrugated plate body 50, and a protruding junction portion 80 at the intersection of the longitudinal corrugations 60 and the transverse corrugations 70. The longitudinal corrugations of the corrugated plate refer to corrugations extending along the longitudinal direction D1, and the transverse corrugations refer to corrugations extending along the transverse direction D2. In... Figure 1 In the illustrated embodiment, the longitudinal dimension of the transverse corrugations 70 gradually decreases from the bottom to the top, and the transverse dimension of the longitudinal corrugations 60 gradually decreases from the bottom to the top. Furthermore, the height of the longitudinal corrugations 60 is less than the height of the transverse corrugations 70, and the maximum transverse dimension of the longitudinal corrugations 60 is less than the maximum longitudinal dimension of the transverse corrugations 70. In other words, the transverse corrugations are large corrugations, and the longitudinal corrugations are small corrugations. The height of the longitudinal corrugations 60 and the transverse corrugations 70 refers to the distance in the height direction D3 between the top edge of the corrugation and the corrugated plate body 50.

[0116] In this embodiment, both the transverse corrugations 70 and the longitudinal corrugations 60 are arc-shaped corrugations, for example, in... Figure 2 The projection plane shown and as Figure 4In the projection plane shown, the projected outlines of the transverse corrugations 70 and the longitudinal corrugations 60 are formed as arcs, with their respective apexes being arcs without sharp edges. In other embodiments not shown, the transverse corrugations and / or the longitudinal corrugations may be formed as triangular corrugations, for example, in their respective cross-sections (which are perpendicular to the direction of extension of the corrugation), the cross-sectional outline of the corrugation is formed as a generally triangular shape, that is, its apex may have sharp edges.

[0117] In this embodiment, the height of the confluence portion 80 is greater than the height of the transverse corrugations and the height of the longitudinal corrugations. The height of the confluence portion 80 refers to the distance in the height direction D3 between the top of the confluence portion 80 and the corrugated plate body 50. The confluence portion 80 includes a smooth top surface 81 and four draw ribs 82 extending from the top surface 81 to the bottom side of the corrugated plate body 50. The top surface 81 smoothly transitions to the draw ribs 82, wherein the total extension direction of each draw rib 82 intersects the transverse direction D2, the longitudinal direction D1, and the height direction D3. It should be noted that a "smooth top surface" means that the top surface 81 itself does not have any sharp edges.

[0118] from Figure 1 and Figure 6 As can be seen, the top surface 81 has four contour lines 813 and 814 defining the top surface 81. These four contour lines 813 and 814 are sequentially connected between four draw beads 82. Each of the four contour lines is concave towards the center of the top surface 81 at its midpoint. It can be understood that this concavity towards the center of the top surface 81 refers to a concavity towards the center of the top surface 81 within a plane parallel to the corrugated plate body 50. The intersection points of adjacent contour lines form the corners of the top surface 81, and the draw beads 82 extend approximately from the corners of the top surface 81 to the corrugated plate body 50.

[0119] Continue to refer to Figure 6Of the four contour lines, the two contour lines 813 located at both ends of the top surface 81 in the longitudinal direction have a concave first radius of curvature, and the two contour lines 814 located at both ends of the top surface 81 in the transverse direction have a concave second radius of curvature. The first radius of curvature is greater than the second radius of curvature. It can be understood that the extension direction of the contour lines 813 located at both ends of the top surface 81 in the longitudinal direction D1 is roughly consistent with the direction of the transverse direction D2, and the extension direction of the contour lines 814 located at both ends of the top surface 81 in the transverse direction D2 is roughly consistent with the direction of the longitudinal direction D1. The concave first radius of curvature of contour line 813 is greater than the concave second radius of curvature of contour line 814, meaning that the curvature of contour line 813 is gentler than that of contour line 814. Alternatively, the concave first radius of curvature of contour line 813 can be equal to the concave second radius of curvature of contour line 814, and contour lines 813 and 814 can have the same curvature.

[0120] Specifically, the longitudinal dimension of the top surface 81 is smaller than its transverse dimension overall. Specifically, the length of the contour line 813 is also greater than the length of the contour line 814, thus making the minimum transverse dimension W2 of the top surface 81 (see...) Figure 6 The minimum longitudinal dimension W1 of the top surface 81 is greater than (see Figure 6 For example, the minimum lateral dimension W2 of the top surface 81 can be more than twice the minimum longitudinal dimension W1 of the top surface 81.

[0121] Next, go to Figure 2 , Figure 4 The projection diagram shown. Figure 2 As shown, the projection of the top surface 81 onto the projection plane defined by the height direction D3 and the lateral direction D2 (referred to as the first projection profile 811) is a curve; as Figure 4 As shown, the projection of the top surface 81 onto the projection plane defined by the height direction D3 and the longitudinal direction D1 (referred to as the second projection profile 812) is a straight line segment. That is, the extension orientation of the top surface 81 extending along the lateral direction D2 from the center of the top surface 81 has a downward component, but the extension orientation of the top surface 81 extending along the longitudinal direction D1 does not have a downward component.

[0122] The top surface 81 smoothly transitions to the drawbead 82. The angle between any point on the top surface 81 and the reference plane defined by the longitudinal direction D1 and the transverse direction D2 (this plane is parallel to the corrugated plate body 81) is smaller than the angle between the total extension direction of the drawbead 82 and the reference plane; that is, the reference... Figure 2 and Figure 4The top surface 81 is an arc surface generally parallel to the reference plane, while the draw beads 82 extend significantly downwards. The overall extension direction of each draw bead 82 intersects the transverse direction D2, the longitudinal direction D1, and the height direction D3. The component of the overall extension direction of the draw beads 82 within the plane defined by the height direction D3 and the transverse direction D2... Figure 2 As shown by D4; the component of the overall extension direction of the drawbead 82 in the plane defined by the longitudinal direction D1 and the height direction D3 is... Figure 4 As shown in D5; the component of the overall extension direction of the drawbead 82 in the plane parallel to the corrugated plate body 50 is... Figure 6 It is shown in D6.

[0123] Continue to refer to, for example Figure 6 In the top view, the projection of each drawbead 82 extends in a direction D6 that is neither parallel to the longitudinal direction D1 nor parallel to the transverse direction D2. Preferably, in the top view, this overall extension direction D6 forms an angle of approximately 40°-60° with the transverse direction D2 and the longitudinal direction D1. Further, the extension direction of the bottom segment 822 of the drawbead 82 that connects to the corrugated plate body 50 is different from the extension direction of the main body of the drawbead 82. That is, different from the overall extension direction of the drawbead 82, the bottom segment 822 of the drawbead 82 extends approximately along the transverse direction D2 and the height direction D3. Figure 6 The component shown in the top view is represented by D7, which can be seen to be a direction parallel to the horizontal direction D2.

[0124] Furthermore, each drawbead 82 also has a top section 821 that is in contact with the top surface 81, and the drawbead 82 has a maximum thickness W approximately at the top section 821 of the drawbead 82 (see...). Figure 1 The thickness of the drawbead 82 gradually decreases from the top to the bottom. The main body of the drawbead 82 smoothly transitions to its top section 821 and bottom section 822.

[0125] Figure 3 and Figure 5 for Figure 1 The diagram shows a cross-sectional view of the corrugated plate 500. Because the corrugated plate 500 itself is a relatively thin flat plate, therefore... Figure 3 and Figure 5 The cross-section of the 500mm corrugated plate is represented only by its outline, and the section lines cannot be shown. (Reference) Figure 3 and Figure 5 The confluence portion 80 also includes a first side surface 85 connecting the top surface 81 and the longitudinal corrugations 60, and a second side surface 83 connecting the top surface 81 and the transverse corrugations 70, the first side surface 85 and the second side surface 83 being substantially perpendicular to the corrugated plate body 50. In such a case... Figure 3 ,Figure 5 As shown in the cross-section, the cross-sectional profiles of the first side 85 and the second side 83 are approximately straight line segments parallel to the D3 direction (i.e., perpendicular to the corrugated plate body 50). Of course, from... Figure 1 As can be seen, the first side 85 and the second side 83 are not flat. The first side 85 has an arc that is concave together with the first contour line 8211 (referring to the concavity in the plane parallel to the corrugated plate body 50), and the second side 83 has an arc that is concave together with the second contour line 8212.

[0126] Compared to designs where the first side extends downwards and longitudinally, and the second side extends downwards and laterally, this embodiment allows for more rapid material deformation during forming, resulting in greater elasticity and shrinkage capacity of the corrugated plate 500. Furthermore, the junction 80 has a more rigid shape, providing better strength and stability. Further, turning back... Figure 3 The second side 83, at the intersection with the transverse corrugation 70, is recessed downwards relative to the top of the transverse corrugation 70. This design creates a shallow groove 84 between the intersection 80 and the transverse corrugation 70, resulting in more rapid material deformation and thus stronger elasticity and shrinkage capacity of the corrugated plate 500. The junction between the first side 85 and the longitudinal corrugation 60 does not have such a groove. Figure 5 As can be seen, the height at the junction between the first side and the longitudinal corrugation 60 is flush with the top of the longitudinal corrugation 60. The portion of the confluence 80 with grooves 84 constitutes the side section of the confluence 80, and the grooves 84 constitute the top surface of the side section; the section of the confluence 80 with a top surface 81 and a drawbeam 82 constitutes the main section of the confluence 80. The two side sections are located on the lateral sides of the main section.

[0127] Referring to the above embodiments, it can be seen that the corrugated plate of the present invention has a smooth and sturdy overall shape, and has relatively rapid material deformation at specific locations, thereby ensuring the overall strength and stability of the corrugated plate, while also exhibiting good elasticity, shrinkage capacity and tension.

[0128] Figures 7-10 A corrugated plate 100 according to another preferred embodiment of the present invention is shown, the corrugated plate 100 having and Figures 1-6The structure is similar to that of the corrugated plate 500 in this embodiment. In this embodiment, the confluence portion 40 also includes a top surface 41 and a drawbeam 44 extending from the top surface 41 to the corrugated plate body 10. The confluence portion 40 also has two edges 441 that cross the transverse corrugations 30 and are symmetrically arranged about the longitudinal corrugations 20. The edges 441 include a first segment, a middle segment, and a second segment connected in sequence. The first segment and the second segment are located on both sides of the transverse corrugations 30, the middle segment forms part of the boundary of the top surface, and the first segment and the second segment of the edges 441 respectively form the ridges of the corresponding drawbeams 44.

[0129] Furthermore, the pair of lateral end faces 42 of the confluence portion 40 are recessed inward relative to each other; the pair of longitudinal end faces 43 of the confluence portion are also recessed inward relative to each other. In the projection plane defined by the lateral direction D2 and the height direction, the top projection profile of the confluence portion is formed by two straight line segments 411 intersecting at an obtuse angle. In the projection plane defined by the longitudinal direction D1 and the height direction, the projection profile of the confluence portion 40 is an arched shape 4121. The end of the confluence portion 40 located directly above the lateral corrugation 30 has an arched protrusion 412 that protrudes beyond the main body of the confluence portion 40.

[0130] Further, refer to Figure 10 The top surface of the intersection portion 40 also has four contour lines defining the top surface. These four contour lines are sequentially connected between the four draw beads 44, and each of the four contour lines is concave towards the center of the top surface at its midpoint. Of the four contour lines, the two contour lines 45 located longitudinally at both ends of the top surface have a first concave radius of curvature, and the two contour lines 46 located laterally at both ends of the top surface have a second concave radius of curvature. The first radius of curvature is smaller than the second radius of curvature. Preferably, as shown... Figure 10 As shown, the first and second radii of curvature can be very large, so that the boundaries of each contour form roughly straight segments, and the top surface of the intersection 40 forms a roughly rectangular shape.

[0131] During the forming process of this corrugated sheet, a material guide core needs to be installed at the punch of the device to make the material forming more controllable. The corrugated sheet has small deformation in the longitudinal direction D1, which maximizes the performance of the raw materials. At the same time, it has rapid deformation in the transverse direction D2, which enables the corrugated sheet to have good elasticity and tensile strength.

[0132] As Figures 1-10 The corrugated sheet shown can be used as a sealing layer for a storage container, the structure of which is... Figures 11-13 As shown in the figure. The directional and positional terms related to the storage container mentioned in this invention can be found in [reference needed].Figures 11-13 Please understand the position and orientation of each component shown. It is important to note that the directional terminology used when describing the corrugated plate separately may differ from the directional terminology used when describing the storage container as it is installed on top of the corrugated plate. For example, the inner side of the storage container should be understood as the side in contact with the liquid, and the outer side as the side away from the liquid.

[0133] First refer to Figure 11 and Figure 12 The wall of the storage container includes a base layer 400 and a sealing layer covering the inner side of the base layer 400, the sealing layer being made of a corrugated plate according to the above embodiment.

[0134] The wall has a central section and an annular section. Specifically, the sealing layer includes a central section 310 and at least one annular section 320 surrounding the central section 310. Each annular section 320 includes a plurality of annular section sealing plates 3210, which are cut from corrugated plates. A gap 350 exists between adjacent units in each annular section, and a first sealing connector can be disposed on the gap 350. For example, the first sealing connector is disposed between circumferentially adjacent sealing plates 3220 and fixes both to the base layer 400. The central section 310 is composed of a fan-shaped central sealing plate 3110. The base layer also has a base layer central section 420 and a base layer annular section 410, the base layer annular section 410 being composed of base layer unit plates 4110.

[0135] Furthermore, there are at least two annular segments 320 arranged sequentially around each other. The sealing layer also includes second annular segment connectors 340 disposed between adjacent annular segments 320, securing the adjacent annular segments to the base layer 400. Three annular segments are shown in the figure—a first annular segment 420a, a second annular segment 420b, and a third annular segment 420c. In other embodiments not shown, fewer or more annular segments may be present.

[0136] The transverse and longitudinal corrugations of the sealing plates 3210 of each annular section constitute the radial and circumferential corrugations of the annular section 320, respectively. A portion of the radial corrugations 380 have their radial inner ends extending to the central section 310, while another portion of the radial corrugations 360 have their radial inner ends located in the middle of the annular section 320, away from the central section 310. This arrangement avoids excessively large circumferential lengths (e.g., S1 and S2 as shown in the figure) between adjacent radial corrugations at the radially outer positions of the annular section, which would lead to insufficient stability and ductility. Adding another radial corrugation between these adjacent radial corrugations ensures that the maximum circumferential distance between adjacent radial corrugations is within a predetermined range. For example, if the distance between the radial inner ends of an adjacent pair of radial corrugations 380 is X, then the maximum circumferential distance between adjacent radial corrugations in the annular section can be between 1.5X and 5X. Preferably, a sealing end cap 370 is installed at the radial inner end of each of the radial corrugations.

[0137] Figure 13 A rectangular wall is shown. The sealing layer includes an array of sealing plates 520 arranged in an array, adjacent array of sealing plates along a first horizontal direction are sealed together by a first sealing connector 5210, and adjacent array of sealing plates along a second horizontal direction are sealed together by a second sealing connector 5220. The base layer 510 also includes an array of base plates, with gaps 5110 between adjacent base plates. A corrugated plate has corrugations extending in the same direction as each gap, covering the gap.

[0138] As can be seen from the above embodiments, the sealing layer of the storage container of the present invention can be made of standard parts with regular shapes, without the need for specially shaped sections. These standard parts can be easily cut from rectangular plates, simplifying processing and saving materials. The sealing layer of the present invention has good flatness, minimizing damage to the insulation layer structure and reducing the impact of the sealing layer on the strength of the insulation box. The sealing layer structure of the present invention allows it to be manufactured thinner, thereby reducing the overall thermal conductivity of the heat storage container and improving the insulation effect. Furthermore, sealing connectors, which are universal components, can be used between adjacent standard parts. Some sealing connectors of the present invention also have a certain degree of thermal expansion and contraction, providing a certain amount of cold shrinkage deformation for the sealing layer. Moreover, using the sealing connectors of the present invention eliminates the need for additional processing operations such as edge rolling on the sealing layer unit plate, improving the flatness of the sealing layer and ensuring a good sealing effect. The bottom wall sealing layer has no protruding parts; laying two such sealing layers and an insulation layer eliminates the need for grooving on the back of the upper insulation layer, thus enhancing the structural strength of the insulation layer. The storage container of the present invention is a liquefied gas storage container for marine equipment or a land-based cryogenic liquid storage device.

[0139] The aforementioned corrugated plates can also be made from... Figures 15-19 Another corrugated plate alternative is shown. The corrugated plate 100' includes a flat corrugated plate body 10', transverse corrugations 30' and longitudinal corrugations 20' formed on the corrugated plate body 10', and a protruding junction portion 40' at the intersection of the longitudinal corrugations 20' and the transverse corrugations 30'. The longitudinal corrugations 20' of the corrugated plate 100' refer to corrugations extending along the longitudinal direction D1, and the transverse corrugations 30' refer to corrugations extending along the transverse direction D2. The longitudinal dimension of the transverse corrugations 30' gradually decreases from the bottom to the top, and the transverse dimension of the longitudinal corrugations 20' gradually decreases from the bottom to the top. Furthermore, the height of the longitudinal corrugations 20' is less than the height of the transverse corrugations 30', and the maximum transverse dimension of the longitudinal corrugations 20' is less than the maximum longitudinal dimension of the transverse corrugations 30'. In other words, the transverse corrugations are large corrugations, and the longitudinal corrugations are small corrugations. The height of the longitudinal corrugation 20' and the transverse corrugation 30' refers to the distance in the height direction D3 between the top of the corrugation and the corrugated plate body 10'.

[0140] In this embodiment, both the transverse corrugation 30' and the longitudinal corrugation 20' are arc-shaped corrugations. The projected outlines of the transverse corrugation 30' and the longitudinal corrugation 20' are arc-shaped, with their respective top ends forming arcs without sharp angles, and their sides also being curved walls. In other embodiments not shown, the transverse corrugations and / or the longitudinal corrugations can be formed as triangular corrugations, for example, in their respective cross-sections (which are perpendicular to the extension direction of the corrugation), the cross-sectional outline of the corrugation is formed as a roughly triangular shape.

[0141] In this embodiment, the confluence portion 40' includes a main body segment 41', a side segment 42', and a connecting segment 43' located between the main body segment 41' and the side segment 42'. The main body segment 41' includes a smooth central top surface 411' and four draw bars 412' extending from the central top surface 411' to the corrugated plate body 10', with the central top surface 411' smoothly transitioning to the draw bars 412'. The overall extension direction of each draw bar 412' intersects the transverse direction D2, the longitudinal direction D1, and the height direction D3. It should be noted that the overall extension direction of the draw bars 412' refers to the approximate extension direction of the draw bars 412' from the central top surface 411' to the corrugated plate body 10'. The height of the central top surface 411' is greater than the height of the transverse corrugations 30'.

[0142] Each of the draw beads 412' has a ridge 4121' extending from its top to its bottom. The ridge 4121' is formed as part of the draw bead 412'. There is no clear boundary between the draw bead 412' and the connecting segment 43', but since the ridge 4121' is abutted against the longitudinal corrugation 20', it is clearly visible that the ridge 4121' is part of the draw bead 412'. There is a gap between the ridge 4121' and the connecting segment 43'. The width of each ridge 4121' remains constant in the direction from top to bottom. Each ridge extends downward from the top of the confluence portion 40'. Here, "ridge width" refers to the width of each ridge after it branches. Each ridge is roughly formed as an ridge structure abutting against the longitudinal corrugation 20'. It should also be noted that "ridge width" refers to the dimension W of the ridge 4121' perpendicular to its extension direction. Since the ridge 4121' is roughly formed as an ridge structure, its width is relatively small. The ridge 4121' extends in a direction generally parallel to the extension direction of the drawbar 412' to which it is located. Preferably, there is a groove 44' between the ridge 4121' and the side segment 42', extending parallel to the ridge 4121' from the top to the bottom of the drawbar 412', the extension direction of which is indicated by D4. Also preferably, the minimum longitudinal dimension W1 of the top of the connecting segment 43' is equal to or close to the width W of the ridge 4121'.

[0143] The two side segments 42' are located at the two transverse ends of the main body segment 41', and the height of the side segments 42' is less than the height of the transverse corrugation 30' and the height of the main body segment 41'. The side segments 42' extend longitudinally and protrude from the transverse corrugation 30' in the longitudinal direction, thus giving the side segments 42' protrusions 422' relative to the transverse corrugation 30'. Preferably, the top 421' of the side segments 42' forms a groove extending in the longitudinal direction D1. The longitudinal dimension of the top of the connecting segment 43' at the middle position 431' in the transverse direction is less than the longitudinal dimension of the top of the connecting segment 43' at the position 432' where it connects to the side segments 42' and the top of the connecting segment 43' at the position 433' where it connects to the main body segment 41'. That is, the top of the connecting segment 43' is shaped like a waist drum, thinner in the middle and expanding at the junction with the main body segment 41' and the side segments 42'.

[0144] Within the projection plane defined by the lateral direction D2 and the vertical direction D3, the top surfaces of the main body segment 41' and the connecting segment 43' are approximately straight segments 4101' and parallel to the corrugated plate body 10'. Preferably, the length of this approximately straight segment 4101' can be 2-3 times the maximum lateral dimension of the longitudinal corrugation 20'.

[0145] Preferably, the confluence portion 40' further includes a pair of side surfaces 45' extending from the central top surface 411' to the longitudinal corrugation 20'. The pair of side surfaces 45' are closer to each other at their lateral center positions than at their lateral ends, such that the second boundary profile 4112' and the fifth boundary profile 4115' form concave arcs towards each other. This pair of side surfaces 45' has the same concave shape and radius of curvature as their respective top boundary profiles (second boundary profile 4112', fifth boundary profile 4115'). Further, the distance between the center positions of the pair of side surfaces 45' in the height direction is greater than the distance between the bottom ends of the pair of side surfaces 45'. The distance between the center positions of the pair of side surfaces 45' in the height direction D3 relative to each other is d2, and the distance between the bottom ends of the pair of side surfaces 45' relative to each other is d1, where d2 > d1.

[0146] In this embodiment, the central top surface of the intersection portion also has some preferred configurations. The central top surface includes six boundary profiles, each of which connects adjacent draw beads 412' or adjacent draw beads 412' and connecting segments. For example, the first boundary profile 4111', the third boundary profile 4113', the fourth boundary profile 4114', and the sixth boundary profile 4116' are each located between adjacent draw beads 412' and connecting segments, and the second boundary profile 4112' and the fifth boundary profile 4115' are located between adjacent draw beads 412'. Each of the boundary profiles is recessed toward the center of the central top surface, and each of the boundary profiles has the same radius of curvature and / or the same length. Preferably, the longitudinal dimension of the top surface (e.g., the distance between the second boundary profile 4112' and the fifth boundary profile 4115') is greater than the lateral dimension of the top surface (e.g., the distance between the intersection of the first boundary profile 4111' and the sixth boundary profile 4116' and the intersection of the third boundary profile 4113' and the fourth boundary profile 4114'). The top 421' of the side segment 42' forms a four-pointed star shape when viewed from above.

[0147] Figures 15-19 Corrugated sheets can also be used Figures 11-14 The wall layer of the storage container. Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 Figures 15-19 Figures 11-14 The corrugated plate shown can also have some variations: for example, the main body and end sections of the drawbead can extend in different directions. In the top view of the corrugated plate, the main body of each drawbead extends in a direction that intersects both the longitudinal and transverse directions, and the bottom section of each drawbead extends in the transverse direction. For another example, the top surface can have other size options, and the minimum transverse dimension of the top surface can be set to more than twice the minimum longitudinal dimension of the top surface.

[0148] The aforementioned corrugated plate exhibits complex deformation at the junctions, but the deformation is not abrupt at any point. Therefore, it can provide good tensile strength in multiple directions, while also possessing good strength and stability at the junctions. Furthermore, although the junctions have multiple deformations, the contours of each deformation are smooth, resulting in a rigid overall shape that is easy to form.

[0149] Various modifications and recombinations of the above embodiments are also within the scope of protection of this invention.

Claims

1. A corrugated plate (500) for a liquefied gas storage tank in a transport device, the corrugated plate (500) forming part of the wall of the storage tank, the corrugated plate including a corrugated plate body (50), longitudinal corrugations (60) and transverse corrugations (70) formed on the corrugated plate body, and an intersection portion (80) at the intersection of the longitudinal corrugations and the transverse corrugations, wherein the height of the longitudinal corrugations is less than the height of the transverse corrugations, and the maximum transverse dimension of the longitudinal corrugations is less than the maximum longitudinal dimension of the transverse corrugations. Its features are, The confluence portion (80) includes a smooth top surface (81) and four draw bars (82) extending from the top surface to the corrugated plate body (50). The top surface (81) smoothly transitions to the draw bars (82), wherein the total extension direction of each draw bar intersects with the transverse direction (D2), the longitudinal direction (D1), and the height direction perpendicular to the corrugated plate body (D3). Furthermore, the height of the confluence portion (80) is greater than the height of the longitudinal corrugation (60) and the height of the transverse corrugation (70); The top surface (81) has four contour lines (813, 814) defining the top surface. These four contour lines are sequentially connected between the four draw beads (82). Each of the four contour lines is concave towards the center of the top surface (81) at its midpoint. The minimum lateral dimension (W2) of the top surface is more than twice the minimum longitudinal dimension (W1). In the top view of the corrugated plate, the main body of each of the draw bars (82) extends in a direction that intersects both the longitudinal and transverse directions, and the bottom section (822) of each of the draw bars extends in the transverse direction (D2), with the main body smoothly transitioning to the bottom section.

2. The corrugated plate according to claim 1, characterized in that, The longitudinal dimension of the top surface (81) is smaller than its transverse dimension.

3. The corrugated plate according to claim 1, characterized in that, Of the four contour lines, the two contour lines (813) located at both ends of the top surface (81) in the longitudinal direction have a first concave radius of curvature, and the two contour lines (814) located at both ends of the top surface (81) in the transverse direction have a second concave radius of curvature, wherein the first radius of curvature is greater than, less than or equal to the second radius of curvature.

4. The corrugated plate according to any one of claims 1-3, characterized in that, The angle between any position on the top surface (81) and the reference plane parallel to the corrugated plate body is smaller than the angle between the total extension direction of the drawbead (82) and the reference plane.

5. The corrugated plate according to any one of claims 1-3, characterized in that, The thickness of each of the draw beads (82) gradually decreases in the direction from its top end to its bottom end.

6. The corrugated plate according to claim 1, characterized in that, The projection (811) of the top surface in the projection plane defined by the height direction (D3) and the lateral direction (D2) is a curve, and the projection (812) in the projection plane defined by the height direction (D3) and the longitudinal direction (D1) is a straight line segment.

7. The corrugated plate according to any one of claims 1-3, characterized in that, The confluence portion (80) further includes a first side (85) connecting the top surface (81) and the longitudinal corrugation (60), and a second side (83) connecting the top surface (81) and the transverse corrugation (60), the first side and the second side being substantially perpendicular to the corrugated plate body (50).

8. The corrugated plate according to claim 7, characterized in that, The second side (83) is recessed downward (84) relative to the top of the transverse corrugation (60) at the location where it intersects with the transverse corrugation.

9. The corrugated plate according to claim 3, characterized in that, The intersection portion (40) has two edges (441) that cross the transverse corrugation (30) and are symmetrically arranged about the longitudinal corrugation (20), the top section of the edges forming part of the boundary of the top surface, and the side section of the edges (441) forming the ridge of the corresponding drawbar (44).

10. The corrugated plate according to claim 9, characterized in that, The pair of transverse end faces (42) of the confluence portion are recessed inward relative to each other; the pair of longitudinal end faces (43) of the confluence portion are recessed inward relative to each other.

11. The corrugated plate according to claim 9, characterized in that, Within the projection plane defined by the longitudinal direction (D1) and the height direction (D3), the projected profile of the intersection (40) is an arch (4121).

12. The corrugated plate according to claim 11, characterized in that, The confluence portion (40) has an arched protrusion (412) at the end located directly above the transverse corrugation, which protrudes from the main body of the confluence portion.

13. A storage container for a liquefied gas, the wall of the storage container comprising a base layer and a sealing layer located inside the base layer, characterized in that, The sealing layer comprises a corrugated plate according to any one of claims 1-12.

14. The storage container according to claim 13, characterized in that, The sealing layer includes: Central section (310); At least one annular segment (320) is provided around the central segment (310), each of the annular segments (320) comprising: Multiple sealing plates, said multiple sealing plates being cut from the corrugated plate; and A first sealing connector is disposed between adjacent sealing plates (3220) in the circumferential direction and fixes both of them to the base layer (400).

15. The storage container according to claim 14, characterized in that, The annular segment (320) is at least two, and the at least two annular segments (320) are arranged in a sequential manner around each other. The sealing layer (20) also includes an annular segment second connector (340), which is disposed between adjacent annular segments (320) and fixes the adjacent annular segments to the base layer (400).

16. The storage container according to claim 15, characterized in that, The transverse and longitudinal corrugations of each sealing plate in the annular section constitute the radial and circumferential corrugations of the annular section, respectively. Among them, the radial inner end of a portion of the radial corrugations (380) extends to the central section, and the radial inner end of another portion of the radial corrugations (360) is located in the middle of the annular section and away from the central section. The maximum circumferential distance between adjacent radial corrugations is within a predetermined range, and a sealing end cap (370) is installed at the radial inner end of each radial corrugation.

17. The storage container according to claim 13, characterized in that, The wall is a rectangular wall, and the sealing layer includes arrayed sealing plates (520) arranged in an array. Adjacent arrayed sealing plates along the first horizontal direction are connected and sealed by a first sealing connector (5210), and adjacent arrayed sealing plates along the second horizontal direction are sealed and connected by a second sealing connector (5220).

18. The storage container according to claim 17, characterized in that, The base layer (510) also includes an array of base plates with gaps (5110) between adjacent base plates, and the array of sealing plates has corrugations that extend in the same direction as each of the gaps and cover the gaps.

19. The storage container according to claim 13, characterized in that, The storage container is a marine equipment liquefied gas storage container or a land-based cryogenic liquid storage device.

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